diff options
| author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-06-02 13:16:04 -0400 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-06-02 13:16:04 -0400 |
| commit | fccd290a8373438c26ed4e4f8130db18eb9b3dfe (patch) | |
| tree | 2f032e1b125aa88e456644de865e9f42fffa4150 /src/libsystemd/sd-bus | |
| parent | 6169d05b4a456e26a0197242464e3e2bca12a29d (diff) | |
./move.sh
Diffstat (limited to 'src/libsystemd/sd-bus')
65 files changed, 0 insertions, 33767 deletions
diff --git a/src/libsystemd/sd-bus/DIFFERENCES b/src/libsystemd/sd-bus/DIFFERENCES deleted file mode 100644 index db269675a7..0000000000 --- a/src/libsystemd/sd-bus/DIFFERENCES +++ /dev/null @@ -1,25 +0,0 @@ -Known differences between dbus1 and kdbus: - -- NameAcquired/NameLost is gone entirely on kdbus backends if - libsystemd is used. It is still added in by systemd-bus-proxyd - for old dbus1 clients, and it is available if libsystemd is used - against the classic dbus1 daemon. If you want to write compatible - code with libsystem-bus you need to explicitly subscribe to - NameOwnerChanged signals and just ignore NameAcquired/NameLost - -- Applications have to deal with spurious signals they didn't expect, - due to the probabilistic bloom filters. They need to handle this - anyway, given that any client can send anything to arbitrary clients - anyway, even in dbus1, so not much changes. - -- clients of the system bus when kdbus is used must roll their own - security. Only legacy dbus1 clients get the old XML policy enforced, - which is implemented by systemd-bus-proxyd. - -- Serial numbers of synthesized messages are always (uint32_t) -1. - -- NameOwnerChanged is a synthetic message, generated locally and not - by the driver. On dbus1 only the Disconnected message was - synthesized like this. - -- There's no standard per-session bus anymore. Only a per-user bus. diff --git a/src/libsystemd/sd-bus/GVARIANT-SERIALIZATION b/src/libsystemd/sd-bus/GVARIANT-SERIALIZATION deleted file mode 100644 index 6aeb11364a..0000000000 --- a/src/libsystemd/sd-bus/GVARIANT-SERIALIZATION +++ /dev/null @@ -1,110 +0,0 @@ -How we use GVariant for serializing D-Bus messages --------------------------------------------------- - -We stay close to the original dbus1 framing as possible, but make -certain changes to adapt for GVariant. dbus1 has the following -framing: - - 1. A fixed header of "yyyyuu" - 2. Additional header fields of "a(yv)" - 3. Padding with NUL bytes to pad up to next 8byte boundary - 4. The body - -Note that the body is not padded at the end, the complete message -hence might have a non-aligned size. Reading multiple messages at once -will hence result in possibly unaligned messages in memory. - -The header consists of the following: - - y Endianness, 'l' or 'B' - y Message Type - y Flags - y Protocol version, '1' - u Length of the body, i.e. the length of part 4 above - u 32bit Serial number - - = 12 bytes - -This header is then followed by the fields array, whose first value is -a 32bit array size. - -When using GVariant we keep the basic structure in place, only -slightly alter the header, and define protocol version '2'. The new -header: - - y Endianness, 'l' or 'B' - y Message Type - y Flags - y Protocol version, '2' - u Reserved, must be 0 - t 64bit Cookie - - = 16 bytes - -This is then followed by the GVariant fields array ("a{tv}"), and -finally the actual body as variant (v). Putting this altogether a -packet on dbus2 hence qualifies as a fully compliant GVariant -structure of (yyyyuta{tv}v). - -For details on gvariant, see: - -https://people.gnome.org/~desrt/gvariant-serialisation.pdf - -Regarding the framing of dbus2, also see: - -https://wiki.gnome.org/Projects/GLib/GDBus/Version2 - -The first four bytes of the header are defined the same way for dbus1 -and dbus2. The first bytes contain the endianess field and the -protocol version, so that the remainder of the message can be safely -made sense of just by looking at the first 32bit. - -Note that the length of the body is no longer included in the header -on dbus2! In fact, the message size must be known in advance, from the -underlying transport in order to parse dbus2 messages, while it is -directly included in dbus1 message headers. This change of semantics -is an effect of GVariant's basic design. - -The serial number has been renamed cookie and has been extended from -32bit to 64bit. It is recommended to avoid the higher 32bit of the -cookie field though, to simplify compatibility with dbus1 peers. Note -that not only the cookie/serial field in the fixed header, but also -the reply_cookie/reply_serial additional header field has been -increased from 32bit to 64bit, too! - -The header field identifiers have been extended from 8bit to -64bit. This has been done to simplify things (as kdbus otherwise uses -exclusively 64bit types, unless there is a strong reason not to), and -has no effect on the serialization size, as due to alignment for each -8bit header field identifier 56 bits of padding had to be added. - -Note that the header size changed, due to these changes. However, -consider that on dbus1 the beginning of the fields array contains the -32bit array size (since that is how arrays are encoded on dbus1), -thus, if one considers that size part of the header, instead of the -array, the size of the header on dbus1 and dbus2 stays identical, at -16 bytes. - - 0 4 8 12 16 - Common: | E | T | F | V | ... - - dbus1: | (as above) | Body Length | Serial | Fields Length | Fields array ... - - gvariant: | (as above) | Reserved | Cookie | Fields array ... - -And that's already it. - -Note: to simplify parsing, valid kdbus/dbus2 messages must include the -entire fixed header and additional header fields in a single non-memfd -message part. Also, the signature string of the body variant all the -way to the end of the message must be in a single non-memfd part -too. The parts for this extended header and footer can be the same -one, and can also continue any amount of additional body bytes. - -Note: on kdbus only native endian messages marshalled in gvariant may - be sent. If a client receives a message in non-native endianness - or in dbus1 marshalling it shall ignore the message. - -Note: The GVariant "MAYBE" type is not supported, so that messages can - be fully converted forth and back between dbus1 and gvariant - representations. diff --git a/src/libsystemd/sd-bus/Makefile b/src/libsystemd/sd-bus/Makefile deleted file mode 120000 index 94aaae2c4d..0000000000 --- a/src/libsystemd/sd-bus/Makefile +++ /dev/null @@ -1 +0,0 @@ -../../Makefile
\ No newline at end of file diff --git a/src/libsystemd/sd-bus/PORTING-DBUS1 b/src/libsystemd/sd-bus/PORTING-DBUS1 deleted file mode 100644 index 2dedb28bcf..0000000000 --- a/src/libsystemd/sd-bus/PORTING-DBUS1 +++ /dev/null @@ -1,535 +0,0 @@ -A few hints on supporting kdbus as backend in your favorite D-Bus library. - -~~~ - -Before you read this, have a look at the DIFFERENCES and -GVARIANT_SERIALIZATION texts you find in the same directory where you -found this. - -We invite you to port your favorite D-Bus protocol implementation -over to kdbus. However, there are a couple of complexities -involved. On kdbus we only speak GVariant marshaling, kdbus clients -ignore traffic in dbus1 marshaling. Thus, you need to add a second, -GVariant compatible marshaler to your library first. - -After you have done that: here's the basic principle how kdbus works: - -You connect to a bus by opening its bus node in /sys/fs/kdbus/. All -buses have a device node there, it starts with a numeric UID of the -owner of the bus, followed by a dash and a string identifying the -bus. The system bus is thus called /sys/fs/kdbus/0-system, and for user -buses the device node is /sys/fs/kdbus/1000-user (if 1000 is your user -id). - -(Before we proceed, please always keep a copy of libsystemd next -to you, ultimately that's where the details are, this document simply -is a rough overview to help you grok things.) - -CONNECTING - -To connect to a bus, simply open() its device node and issue the -KDBUS_CMD_HELLO call. That's it. Now you are connected. Do not send -Hello messages or so (as you would on dbus1), that does not exist for -kdbus. - -The structure you pass to the ioctl will contain a couple of -parameters that you need to know, to operate on the bus. - -There are two flags fields, one indicating features of the kdbus -kernel side ("conn_flags"), the other one ("bus_flags") indicating -features of the bus owner (i.e. systemd). Both flags fields are 64bit -in width. - -When calling into the ioctl, you need to place your own supported -feature bits into these fields. This tells the kernel about the -features you support. When the ioctl returns, it will contain the -features the kernel supports. - -If any of the higher 32bit are set on the two flags fields and your -client does not know what they mean, it must disconnect. The upper -32bit are used to indicate "incompatible" feature additions on the bus -system, the lower 32bit indicate "compatible" feature additions. A -client that does not support a "compatible" feature addition can go on -communicating with the bus, however a client that does not support an -"incompatible" feature must not proceed with the connection. When a -client encountes such an "incompatible" feature it should immediately -try the next bus address configured in the bus address string. - -The hello structure also contains another flags field "attach_flags" -which indicates metadata that is optionally attached to all incoming -messages. You probably want to set KDBUS_ATTACH_NAMES unconditionally -in it. This has the effect that all well-known names of a sender are -attached to all incoming messages. You need this information to -implement matches that match on a message sender name correctly. Of -course, you should only request the attachment of as little metadata -fields as you need. - -The kernel will return in the "id" field your unique id. This is a -simple numeric value. For compatibility with classic dbus1 simply -format this as string and prefix ":1.". - -The kernel will also return the bloom filter size and bloom filter -hash function number used for the signal broadcast bloom filter (see -below). - -The kernel will also return the bus ID of the bus in a 128bit field. - -The pool size field specifies the size of the memory mapped buffer. -After the calling the hello ioctl, you should memory map the kdbus -fd. In this memory mapped region, the kernel will place all your incoming -messages. - -SENDING MESSAGES - -Use the MSG_SEND ioctl to send a message to another peer. The ioctl -takes a structure that contains a variety of fields: - -The flags field corresponds closely to the old dbus1 message header -flags field, though the DONT_EXPECT_REPLY field got inverted into -EXPECT_REPLY. - -The dst_id/src_id field contains the unique id of the destination and -the sender. The sender field is overridden by the kernel usually, hence -you shouldn't fill it in. The destination field can also take the -special value KDBUS_DST_ID_BROADCAST for broadcast messages. For -messages intended to a well-known name set the field to -KDBUS_DST_ID_NAME, and attach the name in a special "items" entry to -the message (see below). - -The payload field indicates the payload. For all dbus traffic it -should carry the value 0x4442757344427573ULL. (Which encodes -'DBusDBus'). - -The cookie field corresponds with the "serial" field of classic -dbus1. We simply renamed it here (and extended it to 64bit) since we -didn't want to imply the monotonicity of the assignment the way the -word "serial" indicates it. - -When sending a message that expects a reply, you need to set the -EXPECT_REPLY flag in the message flag field. In this case you should -also fill out the "timeout_ns" value which indicates the timeout in -nsec for this call. If the peer does not respond in this time you will -get a notification of a timeout. Note that this is also used for -security purposes: a single reply messages is only allowed through the -bus as long as the timeout has not ended. With this timeout value you -hence "open a time window" in which the peer might respond to your -request and the policy allows the response to go through. - -When sending a message that is a reply, you need to fill in the -cookie_reply field, which is similar to the reply_serial field of -dbus1. Note that a message cannot have EXPECT_REPLY and a reply_serial -at the same time! - -This pretty much explains the ioctl header. The actual payload of the -data is now referenced in additional items that are attached to this -ioctl header structure at the end. When sending a message, you attach -items of the type PAYLOAD_VEC, PAYLOAD_MEMFD, FDS, BLOOM_FILTER, -DST_NAME to it: - - KDBUS_ITEM_PAYLOAD_VEC: contains a pointer + length pair for - referencing arbitrary user memory. This is how you reference most - of your data. It's a lot like the good old iovec structure of glibc. - - KDBUS_ITEM_PAYLOAD_MEMFD: for large data blocks it is preferable - to send prepared "memfds" (see below) over. This item contains an - fd for a memfd plus a size. - - KDBUS_ITEM_FDS: for sending over fds attach an item of this type with - an array of fds. - - KDBUS_ITEM_BLOOM_FILTER: the calculated bloom filter of this message, - only for undirected (broadcast) message. - - KDBUS_ITEM_DST_NAME: for messages that are directed to a well-known - name (instead of a unique name), this item contains the well-known - name field. - -A single message may consists of no, one or more payload items of type -PAYLOAD_VEC or PAYLOAD_MEMFD. D-Bus protocol implementations should -treat them as a single block that just happens to be split up into -multiple items. Some restrictions apply however: - - The message header in its entirety must be contained in a single - PAYLOAD_VEC item. - - You may only split your message up right in front of each GVariant - contained in the payload, as well is immediately before framing of a - Gvariant, as well after as any padding bytes if there are any. The - padding bytes must be wholly contained in the preceding - PAYLOAD_VEC/PAYLOAD_MEMFD item. You may not split up basic types - nor arrays of fixed types. The latter is necessary to allow APIs - to return direct pointers to linear arrays of numeric - values. Examples: The basic types "u", "s", "t" have to be in the - same payload item. The array of fixed types "ay", "ai" have to be - fully in contained in the same payload item. For an array "as" or - "a(si)" the only restriction however is to keep each string - individually in an uninterrupted item, to keep the framing of each - element and the array in a single uninterrupted item, however the - various strings might end up in different items. - -Note again, that splitting up messages into separate items is up to the -implementation. Also note that the kdbus kernel side might merge -separate items if it deems this to be useful. However, the order in -which items are contained in the message is left untouched. - -PAYLOAD_MEMFD items allow zero-copy data transfer (see below regarding -the memfd concept). Note however that the overhead of mapping these -makes them relatively expensive, and only worth the trouble for memory -blocks > 512K (this value appears to be quite universal across -architectures, as we tested). Thus we recommend sending PAYLOAD_VEC -items over for small messages and restore to PAYLOAD_MEMFD items for -messages > 512K. Since while building up the message you might not -know yet whether it will grow beyond this boundary a good approach is -to simply build the message unconditionally in a memfd -object. However, when the message is sealed to be sent away check for -the size limit. If the size of the message is < 512K, then simply send -the data as PAYLOAD_VEC and reuse the memfd. If it is >= 512K, seal -the memfd and send it as PAYLOAD_MEMFD, and allocate a new memfd for -the next message. - -RECEIVING MESSAGES - -Use the MSG_RECV ioctl to read a message from kdbus. This will return -an offset into the pool memory map, relative to its beginning. - -The received message structure more or less follows the structure of -the message originally sent. However, certain changes have been -made. In the header the src_id field will be filled in. - -The payload items might have gotten merged and PAYLOAD_VEC items are -not used. Instead, you will only find PAYLOAD_OFF and PAYLOAD_MEMFD -items. The former contain an offset and size into your memory mapped -pool where you find the payload. - -If during the HELLO ioctl you asked for getting metadata attached to -your message, you will find additional KDBUS_ITEM_CREDS, -KDBUS_ITEM_PID_COMM, KDBUS_ITEM_TID_COMM, KDBUS_ITEM_TIMESTAMP, -KDBUS_ITEM_EXE, KDBUS_ITEM_CMDLINE, KDBUS_ITEM_CGROUP, -KDBUS_ITEM_CAPS, KDBUS_ITEM_SECLABEL, KDBUS_ITEM_AUDIT items that -contain this metadata. This metadata will be gathered from the sender -at the point in time it sends the message. This information is -uncached, and since it is appended by the kernel, trustable. The -KDBUS_ITEM_SECLABEL item usually contains the SELinux security label, -if it is used. - -After processing the message you need to call the KDBUS_CMD_FREE -ioctl, which releases the message from the pool, and allows the kernel -to store another message there. Note that the memory used by the pool -is ordinary anonymous, swappable memory that is backed by tmpfs. Hence -there is no need to copy the message out of it quickly, instead you -can just leave it there as long as you need it and release it via the -FREE ioctl only after that's done. - -BLOOM FILTERS - -The kernel does not understand dbus marshaling, it will not look into -the message payload. To allow clients to subscribe to specific subsets -of the broadcast matches we employ bloom filters. - -When broadcasting messages, a bloom filter needs to be attached to the -message in a KDBUS_ITEM_BLOOM item (and only for broadcasting -messages!). If you don't know what bloom filters are, read up now on -Wikipedia. In short: they are a very efficient way how to -probabilistically check whether a certain word is contained in a -vocabulary. It knows no false negatives, but it does know false -positives. - -The parameters for the bloom filters that need to be included in -broadcast message is communicated to userspace as part of the hello -response structure (see above). By default it has the parameters m=512 -(bits in the filter), k=8 (nr of hash functions). Note however, that -this is subject to change in later versions, and userspace -implementations must be capable of handling m values between at least -m=8 and m=2^32, and k values between at least k=1 and k=32. The -underlying hash function is SipHash-2-4. It is used with a number of -constant (yet originally randomly generated) 128bit hash keys, more -specifically: - - b9,66,0b,f0,46,70,47,c1,88,75,c4,9c,54,b9,bd,15, - aa,a1,54,a2,e0,71,4b,39,bf,e1,dd,2e,9f,c5,4a,3b, - 63,fd,ae,be,cd,82,48,12,a1,6e,41,26,cb,fa,a0,c8, - 23,be,45,29,32,d2,46,2d,82,03,52,28,fe,37,17,f5, - 56,3b,bf,ee,5a,4f,43,39,af,aa,94,08,df,f0,fc,10, - 31,80,c8,73,c7,ea,46,d3,aa,25,75,0f,9e,4c,09,29, - 7d,f7,18,4b,7b,a4,44,d5,85,3c,06,e0,65,53,96,6d, - f2,77,e9,6f,93,b5,4e,71,9a,0c,34,88,39,25,bf,35 - -When calculating the first bit index into the bloom filter, the -SipHash-2-4 hash value is calculated for the input data and the first -16 bytes of the array above as hash key. Of the resulting 8 bytes of -output, as many full bytes are taken for the bit index as necessary, -starting from the output's first byte. For the second bit index the -same hash value is used, continuing with the next unused output byte, -and so on. Each time the bytes returned by the hash function are -depleted it is recalculated with the next 16 byte hash key from the -array above and the same input data. - -For each message to send across the bus we populate the bloom filter -with all possible matchable strings. If a client then wants to -subscribe to messages of this type, it simply tells the kernel to test -its own calculated bit mask against the bloom filter of each message. - -More specifically, the following strings are added to the bloom filter -of each message that is broadcasted: - - The string "interface:" suffixed by the interface name - - The string "member:" suffixed by the member name - - The string "path:" suffixed by the path name - - The string "path-slash-prefix:" suffixed with the path name, and - also all prefixes of the path name (cut off at "/"), also prefixed - with "path-slash-prefix". - - The string "message-type:" suffixed with the strings "signal", - "method_call", "error" or "method_return" for the respective message - type of the message. - - If the first argument of the message is a string, "arg0:" suffixed - with the first argument. - - If the first argument of the message is a string, "arg0-dot-prefix" - suffixed with the first argument, and also all prefixes of the - argument (cut off at "."), also prefixed with "arg0-dot-prefix". - - If the first argument of the message is a string, - "arg0-slash-prefix" suffixed with the first argument, and also all - prefixes of the argument (cut off at "/"), also prefixed with - "arg0-slash-prefix". - - Similar for all further arguments that are strings up to 63, for the - arguments and their "dot" and "slash" prefixes. On the first - argument that is not a string, addition to the bloom filter should be - stopped however. - -(Note that the bloom filter does not contain sender nor receiver -names!) - -When a client wants to subscribe to messages matching a certain -expression, it should calculate the bloom mask following the same -algorithm. The kernel will then simply test the mask against the -attached bloom filters. - -Note that bloom filters are probabilistic, which means that clients -might get messages they did not expect. Your bus protocol -implementation must be capable of dealing with these unexpected -messages (which it needs to anyway, given that transfers are -relatively unrestricted on kdbus and people can send you all kinds of -non-sense). - -If a client connects to a bus whose bloom filter metrics (i.e. filter -size and number of hash functions) are outside of the range the client -supports it must immediately disconnect and continue connection with -the next bus address of the bus connection string. - -INSTALLING MATCHES - -To install matches for broadcast messages, use the KDBUS_CMD_ADD_MATCH -ioctl. It takes a structure that contains an encoded match expression, -and that is followed by one or more items, which are combined in an -AND way. (Meaning: a message is matched exactly when all items -attached to the original ioctl struct match). - -To match against other user messages add a KDBUS_ITEM_BLOOM item in -the match (see above). Note that the bloom filter does not include -matches to the sender names. To additionally check against sender -names, use the KDBUS_ITEM_ID (for unique id matches) and -KDBUS_ITEM_NAME (for well-known name matches) item types. - -To match against kernel generated messages (see below) you should add -items of the same type as the kernel messages include, -i.e. KDBUS_ITEM_NAME_ADD, KDBUS_ITEM_NAME_REMOVE, -KDBUS_ITEM_NAME_CHANGE, KDBUS_ITEM_ID_ADD, KDBUS_ITEM_ID_REMOVE and -fill them out. Note however, that you have some wildcards in this -case, for example the .id field of KDBUS_ITEM_ID_ADD/KDBUS_ITEM_ID_REMOVE -structures may be set to 0 to match against any id addition/removal. - -Note that dbus match strings do no map 1:1 to these ioctl() calls. In -many cases (where the match string is "underspecified") you might need -to issue up to six different ioctl() calls for the same match. For -example, the empty match (which matches against all messages), would -translate into one KDBUS_ITEM_BLOOM ioctl, one KDBUS_ITEM_NAME_ADD, -one KDBUS_ITEM_NAME_CHANGE, one KDBUS_ITEM_NAME_REMOVE, one -KDBUS_ITEM_ID_ADD and one KDBUS_ITEM_ID_REMOVE. - -When creating a match, you may attach a "cookie" value to them, which -is used for deleting this match again. The cookie can be selected freely -by the client. When issuing KDBUS_CMD_REMOVE_MATCH, simply pass the -same cookie as before and all matches matching the same "cookie" value -will be removed. This is particularly handy for the case where multiple -ioctl()s are added for a single match strings. - -MEMFDS - -memfds may be sent across kdbus via KDBUS_ITEM_PAYLOAD_MEMFD items -attached to messages. If this is done, the data included in the memfd -is considered part of the payload stream of a message, and are treated -the same way as KDBUS_ITEM_PAYLOAD_VEC by the receiving side. It is -possible to interleave KDBUS_ITEM_PAYLOAD_MEMFD and -KDBUS_ITEM_PAYLOAD_VEC items freely, by the reader they will be -considered a single stream of bytes in the order these items appear in -the message, that just happens to be split up at various places -(regarding rules how they may be split up, see above). The kernel will -refuse taking KDBUS_ITEM_PAYLOAD_MEMFD items that refer to memfds that -are not sealed. - -Note that sealed memfds may be unsealed again if they are not mapped -you have the only fd reference to them. - -Alternatively to sending memfds as KDBUS_ITEM_PAYLOAD_MEMFD items -(where they are just a part of the payload stream of a message) you can -also simply attach any memfd to a message using -KDBUS_ITEM_PAYLOAD_FDS. In this case, the memfd contents is not -considered part of the payload stream of the message, but simply fds -like any other, that happen to be attached to the message. - -MESSAGES FROM THE KERNEL - -A couple of messages previously generated by the dbus1 bus driver are -now generated by the kernel. Since the kernel does not understand the -payload marshaling, they are generated by the kernel in a different -format. This is indicated with the "payload type" field of the -messages set to 0. Library implementations should take these messages -and synthesize traditional driver messages for them on reception. - -More specifically: - - Instead of the NameOwnerChanged, NameLost, NameAcquired signals - there are kernel messages containing KDBUS_ITEM_NAME_ADD, - KDBUS_ITEM_NAME_REMOVE, KDBUS_ITEM_NAME_CHANGE, KDBUS_ITEM_ID_ADD, - KDBUS_ITEM_ID_REMOVE items are generated (each message will contain - exactly one of these items). Note that in libsystemd we have - obsoleted NameLost/NameAcquired messages, since they are entirely - redundant to NameOwnerChanged. This library will hence only - synthesize NameOwnerChanged messages from these kernel messages, - and never generate NameLost/NameAcquired. If your library needs to - stay compatible to the old dbus1 userspace, you possibly might need - to synthesize both a NameOwnerChanged and NameLost/NameAcquired - message from the same kernel message. - - When a method call times out, a KDBUS_ITEM_REPLY_TIMEOUT message is - generated. This should be synthesized into a method error reply - message to the original call. - - When a method call fails because the peer terminated the connection - before responding, a KDBUS_ITEM_REPLY_DEAD message is - generated. Similarly, it should be synthesized into a method error - reply message. - -For synthesized messages we recommend setting the cookie field to -(uint32_t) -1 (and not (uint64_t) -1!), so that the cookie is not 0 -(which the dbus1 spec does not allow), but clearly recognizable as -synthetic. - -Note that the KDBUS_ITEM_NAME_XYZ messages will actually inform you -about all kinds of names, including activatable ones. Classic dbus1 -NameOwnerChanged messages OTOH are only generated when a name is -really acquired on the bus and not just simply activatable. This means -you must explicitly check for the case where an activatable name -becomes acquired or an acquired name is lost and returns to be -activatable. - -NAME REGISTRY - -To acquire names on the bus, use the KDBUS_CMD_NAME_ACQUIRE ioctl(). It -takes a flags field similar to dbus1's RequestName() bus driver call, -however the NO_QUEUE flag got inverted into a QUEUE flag instead. - -To release a previously acquired name use the KDBUS_CMD_NAME_RELEASE -ioctl(). - -To list acquired names use the KDBUS_CMD_CONN_INFO ioctl. It may be -used to list unique names, well known names as well as activatable -names and clients currently queuing for ownership of a well-known -name. The ioctl will return an offset into the memory pool. After -reading all the data you need, you need to release this via the -KDBUS_CMD_FREE ioctl(), similar how you release a received message. - -CREDENTIALS - -kdbus can optionally attach various kinds of metadata about the sender at -the point of time of sending ("credentials") to messages, on request -of the receiver. This is both supported on directed and undirected -(broadcast) messages. The metadata to attach is selected at time of -the HELLO ioctl of the receiver via a flags field (see above). Note -that clients must be able to handle that messages contain more -metadata than they asked for themselves, to simplify implementation of -broadcasting in the kernel. The receiver should not rely on this data -to be around though, even though it will be correct if it happens to -be attached. In order to avoid programming errors in applications, we -recommend though not passing this data on to clients that did not -explicitly ask for it. - -Credentials may also be queried for a well-known or unique name. Use -the KDBUS_CMD_CONN_INFO for this. It will return an offset to the pool -area again, which will contain the same credential items as messages -have attached. Note that when issuing the ioctl, you can select a -different set of credentials to gather, than what was originally requested -for being attached to incoming messages. - -Credentials are always specific to the sender's domain that was -current at the time of sending, and of the process that opened the -bus connection at the time of opening it. Note that this latter data -is cached! - -POLICY - -The kernel enforces only very limited policy on names. It will not do -access filtering by userspace payload, and thus not by interface or -method name. - -This ultimately means that most fine-grained policy enforcement needs -to be done by the receiving process. We recommend using PolicyKit for -any more complex checks. However, libraries should make simple static -policy decisions regarding privileged/unprivileged method calls -easy. We recommend doing this by enabling KDBUS_ATTACH_CAPS and -KDBUS_ATTACH_CREDS for incoming messages, and then discerning client -access by some capability, or if sender and receiver UIDs match. - -BUS ADDRESSES - -When connecting to kdbus use the "kernel:" protocol prefix in DBus -address strings. The device node path is encoded in its "path=" -parameter. - -Client libraries should use the following connection string when -connecting to the system bus: - - kernel:path=/sys/fs/kdbus/0-system/bus;unix:path=/var/run/dbus/system_bus_socket - -This will ensure that kdbus is preferred over the legacy AF_UNIX -socket, but compatibility is kept. For the user bus use: - - kernel:path=/sys/fs/kdbus/$UID-user/bus;unix:path=$XDG_RUNTIME_DIR/bus - -With $UID replaced by the callers numer user ID, and $XDG_RUNTIME_DIR -following the XDG basedir spec. - -Of course the $DBUS_SYSTEM_BUS_ADDRESS and $DBUS_SESSION_BUS_ADDRESS -variables should still take precedence. - -DBUS SERVICE FILES - -Activatable services for kdbus may not use classic dbus1 service -activation files. Instead, programs should drop in native systemd -.service and .busname unit files, so that they are treated uniformly -with other types of units and activation of the system. - -Note that this results in a major difference to classic dbus1: -activatable bus names can be established at any time in the boot process. -This is unlike dbus1 where activatable names are unconditionally available -as long as dbus-daemon is running. Being able to control when -activatable names are established is essential to allow usage of kdbus -during early boot and in initrds, without the risk of triggering -services too early. - -DISCLAIMER - -This all is so far just the status quo. We are putting this together, because -we are quite confident that further API changes will be smaller, but -to make this very clear: this is all subject to change, still! - -We invite you to port over your favorite dbus library to this new -scheme, but please be prepared to make minor changes when we still -change these interfaces! diff --git a/src/libsystemd/sd-bus/bus-bloom.c b/src/libsystemd/sd-bus/bus-bloom.c deleted file mode 100644 index 112769fcb6..0000000000 --- a/src/libsystemd/sd-bus/bus-bloom.c +++ /dev/null @@ -1,156 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-bloom.h" -#include "siphash24.h" -#include "util.h" - -static inline void set_bit(uint64_t filter[], unsigned long b) { - filter[b >> 6] |= 1ULL << (b & 63); -} - -static const sd_id128_t hash_keys[] = { - SD_ID128_ARRAY(b9,66,0b,f0,46,70,47,c1,88,75,c4,9c,54,b9,bd,15), - SD_ID128_ARRAY(aa,a1,54,a2,e0,71,4b,39,bf,e1,dd,2e,9f,c5,4a,3b), - SD_ID128_ARRAY(63,fd,ae,be,cd,82,48,12,a1,6e,41,26,cb,fa,a0,c8), - SD_ID128_ARRAY(23,be,45,29,32,d2,46,2d,82,03,52,28,fe,37,17,f5), - SD_ID128_ARRAY(56,3b,bf,ee,5a,4f,43,39,af,aa,94,08,df,f0,fc,10), - SD_ID128_ARRAY(31,80,c8,73,c7,ea,46,d3,aa,25,75,0f,9e,4c,09,29), - SD_ID128_ARRAY(7d,f7,18,4b,7b,a4,44,d5,85,3c,06,e0,65,53,96,6d), - SD_ID128_ARRAY(f2,77,e9,6f,93,b5,4e,71,9a,0c,34,88,39,25,bf,35), -}; - -static void bloom_add_data( - uint64_t filter[], /* The filter bits */ - size_t size, /* Size of the filter in bytes */ - unsigned k, /* Number of hash functions */ - const void *data, /* Data to hash */ - size_t n) { /* Size of data to hash in bytes */ - - uint64_t h; - uint64_t m; - unsigned w, i, c = 0; - unsigned hash_index; - - assert(size > 0); - assert(k > 0); - - /* Determine bits in filter */ - m = size * 8; - - /* Determine how many bytes we need to generate a bit index 0..m for this filter */ - w = (u64log2(m) + 7) / 8; - - assert(w <= sizeof(uint64_t)); - - /* Make sure we have enough hash keys to generate m * k bits - * of hash value. Note that SipHash24 generates 64 bits of - * hash value for each 128 bits of hash key. */ - assert(k * w <= ELEMENTSOF(hash_keys) * 8); - - for (i = 0, hash_index = 0; i < k; i++) { - uint64_t p = 0; - unsigned d; - - for (d = 0; d < w; d++) { - if (c <= 0) { - h = siphash24(data, n, hash_keys[hash_index++].bytes); - c += 8; - } - - p = (p << 8ULL) | (uint64_t) ((uint8_t *)&h)[8 - c]; - c--; - } - - p &= m - 1; - set_bit(filter, p); - } - - /* log_debug("bloom: adding <%.*s>", (int) n, (char*) data); */ -} - -void bloom_add_pair(uint64_t filter[], size_t size, unsigned k, const char *a, const char *b) { - size_t n; - char *c; - - assert(filter); - assert(a); - assert(b); - - n = strlen(a) + 1 + strlen(b); - c = alloca(n + 1); - strcpy(stpcpy(stpcpy(c, a), ":"), b); - - bloom_add_data(filter, size, k, c, n); -} - -void bloom_add_prefixes(uint64_t filter[], size_t size, unsigned k, const char *a, const char *b, char sep) { - size_t n; - char *c, *p; - - assert(filter); - assert(a); - assert(b); - - n = strlen(a) + 1 + strlen(b); - c = alloca(n + 1); - - p = stpcpy(stpcpy(c, a), ":"); - strcpy(p, b); - - bloom_add_data(filter, size, k, c, n); - - for (;;) { - char *e; - - e = strrchr(p, sep); - if (!e) - break; - - *(e + 1) = 0; - bloom_add_data(filter, size, k, c, e - c + 1); - - if (e == p) - break; - - *e = 0; - bloom_add_data(filter, size, k, c, e - c); - } -} - -bool bloom_validate_parameters(size_t size, unsigned k) { - uint64_t m; - unsigned w; - - if (size <= 0) - return false; - - if (k <= 0) - return false; - - m = size * 8; - w = (u64log2(m) + 7) / 8; - if (w > sizeof(uint64_t)) - return false; - - if (k * w > ELEMENTSOF(hash_keys) * 8) - return false; - - return true; -} diff --git a/src/libsystemd/sd-bus/bus-bloom.h b/src/libsystemd/sd-bus/bus-bloom.h deleted file mode 100644 index c824622b95..0000000000 --- a/src/libsystemd/sd-bus/bus-bloom.h +++ /dev/null @@ -1,43 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> -#include <stddef.h> -#include <stdint.h> - -/* - * Our default bloom filter has the following parameters: - * - * m=512 (bits in the filter) - * k=8 (hash functions) - * - * We use SipHash24 as hash function with a number of (originally - * randomized) but fixed hash keys. - * - */ - -#define DEFAULT_BLOOM_SIZE (512/8) /* m: filter size */ -#define DEFAULT_BLOOM_N_HASH 8 /* k: number of hash functions */ - -void bloom_add_pair(uint64_t filter[], size_t size, unsigned n_hash, const char *a, const char *b); -void bloom_add_prefixes(uint64_t filter[], size_t size, unsigned n_hash, const char *a, const char *b, char sep); - -bool bloom_validate_parameters(size_t size, unsigned n_hash); diff --git a/src/libsystemd/sd-bus/bus-common-errors.c b/src/libsystemd/sd-bus/bus-common-errors.c deleted file mode 100644 index 3c19f2b108..0000000000 --- a/src/libsystemd/sd-bus/bus-common-errors.c +++ /dev/null @@ -1,87 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2014 Zbigniew Jędrzejewski-Szmek - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> - -#include "sd-bus.h" - -#include "bus-common-errors.h" -#include "bus-error.h" - -BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map bus_common_errors[] = { - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_UNIT, ENOENT), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_UNIT_FOR_PID, ESRCH), - SD_BUS_ERROR_MAP(BUS_ERROR_UNIT_EXISTS, EEXIST), - SD_BUS_ERROR_MAP(BUS_ERROR_LOAD_FAILED, EIO), - SD_BUS_ERROR_MAP(BUS_ERROR_JOB_FAILED, EREMOTEIO), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_JOB, ENOENT), - SD_BUS_ERROR_MAP(BUS_ERROR_NOT_SUBSCRIBED, EINVAL), - SD_BUS_ERROR_MAP(BUS_ERROR_ALREADY_SUBSCRIBED, EINVAL), - SD_BUS_ERROR_MAP(BUS_ERROR_ONLY_BY_DEPENDENCY, EINVAL), - SD_BUS_ERROR_MAP(BUS_ERROR_TRANSACTION_JOBS_CONFLICTING, EDEADLK), - SD_BUS_ERROR_MAP(BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC, EDEADLK), - SD_BUS_ERROR_MAP(BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE, EDEADLK), - SD_BUS_ERROR_MAP(BUS_ERROR_UNIT_MASKED, ESHUTDOWN), - SD_BUS_ERROR_MAP(BUS_ERROR_JOB_TYPE_NOT_APPLICABLE, EBADR), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_ISOLATION, EPERM), - SD_BUS_ERROR_MAP(BUS_ERROR_SHUTTING_DOWN, ECANCELED), - SD_BUS_ERROR_MAP(BUS_ERROR_SCOPE_NOT_RUNNING, EHOSTDOWN), - - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_MACHINE, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_IMAGE, ENOENT), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_MACHINE_FOR_PID, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_MACHINE_EXISTS, EEXIST), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_PRIVATE_NETWORKING, ENOSYS), - - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_SESSION, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SESSION_FOR_PID, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_USER, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_USER_FOR_PID, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_SEAT, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_SESSION_NOT_ON_SEAT, EINVAL), - SD_BUS_ERROR_MAP(BUS_ERROR_NOT_IN_CONTROL, EINVAL), - SD_BUS_ERROR_MAP(BUS_ERROR_DEVICE_IS_TAKEN, EINVAL), - SD_BUS_ERROR_MAP(BUS_ERROR_DEVICE_NOT_TAKEN, EINVAL), - SD_BUS_ERROR_MAP(BUS_ERROR_OPERATION_IN_PROGRESS, EINPROGRESS), - SD_BUS_ERROR_MAP(BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, EOPNOTSUPP), - - SD_BUS_ERROR_MAP(BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED, EALREADY), - - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_PROCESS, ESRCH), - - SD_BUS_ERROR_MAP(BUS_ERROR_NO_NAME_SERVERS, ESRCH), - SD_BUS_ERROR_MAP(BUS_ERROR_INVALID_REPLY, EINVAL), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_RR, ENOENT), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_RESOURCES, ENOMEM), - SD_BUS_ERROR_MAP(BUS_ERROR_CNAME_LOOP, EDEADLK), - SD_BUS_ERROR_MAP(BUS_ERROR_ABORTED, ECANCELED), - SD_BUS_ERROR_MAP(BUS_ERROR_CONNECTION_FAILURE, ECONNREFUSED), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_SERVICE, EUNATCH), - SD_BUS_ERROR_MAP(BUS_ERROR_DNSSEC_FAILED, EHOSTUNREACH), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_TRUST_ANCHOR, EHOSTUNREACH), - SD_BUS_ERROR_MAP(BUS_ERROR_RR_TYPE_UNSUPPORTED, EOPNOTSUPP), - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_LINK, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_LINK_BUSY, EBUSY), - SD_BUS_ERROR_MAP(BUS_ERROR_NETWORK_DOWN, ENETDOWN), - - SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_TRANSFER, ENXIO), - SD_BUS_ERROR_MAP(BUS_ERROR_TRANSFER_IN_PROGRESS, EBUSY), - - SD_BUS_ERROR_MAP_END -}; diff --git a/src/libsystemd/sd-bus/bus-common-errors.h b/src/libsystemd/sd-bus/bus-common-errors.h deleted file mode 100644 index fab8748f46..0000000000 --- a/src/libsystemd/sd-bus/bus-common-errors.h +++ /dev/null @@ -1,86 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-error.h" - -#define BUS_ERROR_NO_SUCH_UNIT "org.freedesktop.systemd1.NoSuchUnit" -#define BUS_ERROR_NO_UNIT_FOR_PID "org.freedesktop.systemd1.NoUnitForPID" -#define BUS_ERROR_UNIT_EXISTS "org.freedesktop.systemd1.UnitExists" -#define BUS_ERROR_LOAD_FAILED "org.freedesktop.systemd1.LoadFailed" -#define BUS_ERROR_JOB_FAILED "org.freedesktop.systemd1.JobFailed" -#define BUS_ERROR_NO_SUCH_JOB "org.freedesktop.systemd1.NoSuchJob" -#define BUS_ERROR_NOT_SUBSCRIBED "org.freedesktop.systemd1.NotSubscribed" -#define BUS_ERROR_ALREADY_SUBSCRIBED "org.freedesktop.systemd1.AlreadySubscribed" -#define BUS_ERROR_ONLY_BY_DEPENDENCY "org.freedesktop.systemd1.OnlyByDependency" -#define BUS_ERROR_TRANSACTION_JOBS_CONFLICTING "org.freedesktop.systemd1.TransactionJobsConflicting" -#define BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC "org.freedesktop.systemd1.TransactionOrderIsCyclic" -#define BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE "org.freedesktop.systemd1.TransactionIsDestructive" -#define BUS_ERROR_UNIT_MASKED "org.freedesktop.systemd1.UnitMasked" -#define BUS_ERROR_JOB_TYPE_NOT_APPLICABLE "org.freedesktop.systemd1.JobTypeNotApplicable" -#define BUS_ERROR_NO_ISOLATION "org.freedesktop.systemd1.NoIsolation" -#define BUS_ERROR_SHUTTING_DOWN "org.freedesktop.systemd1.ShuttingDown" -#define BUS_ERROR_SCOPE_NOT_RUNNING "org.freedesktop.systemd1.ScopeNotRunning" - -#define BUS_ERROR_NO_SUCH_MACHINE "org.freedesktop.machine1.NoSuchMachine" -#define BUS_ERROR_NO_SUCH_IMAGE "org.freedesktop.machine1.NoSuchImage" -#define BUS_ERROR_NO_MACHINE_FOR_PID "org.freedesktop.machine1.NoMachineForPID" -#define BUS_ERROR_MACHINE_EXISTS "org.freedesktop.machine1.MachineExists" -#define BUS_ERROR_NO_PRIVATE_NETWORKING "org.freedesktop.machine1.NoPrivateNetworking" -#define BUS_ERROR_NO_SUCH_USER_MAPPING "org.freedesktop.machine1.NoSuchUserMapping" -#define BUS_ERROR_NO_SUCH_GROUP_MAPPING "org.freedesktop.machine1.NoSuchGroupMapping" - -#define BUS_ERROR_NO_SUCH_SESSION "org.freedesktop.login1.NoSuchSession" -#define BUS_ERROR_NO_SESSION_FOR_PID "org.freedesktop.login1.NoSessionForPID" -#define BUS_ERROR_NO_SUCH_USER "org.freedesktop.login1.NoSuchUser" -#define BUS_ERROR_NO_USER_FOR_PID "org.freedesktop.login1.NoUserForPID" -#define BUS_ERROR_NO_SUCH_SEAT "org.freedesktop.login1.NoSuchSeat" -#define BUS_ERROR_SESSION_NOT_ON_SEAT "org.freedesktop.login1.SessionNotOnSeat" -#define BUS_ERROR_NOT_IN_CONTROL "org.freedesktop.login1.NotInControl" -#define BUS_ERROR_DEVICE_IS_TAKEN "org.freedesktop.login1.DeviceIsTaken" -#define BUS_ERROR_DEVICE_NOT_TAKEN "org.freedesktop.login1.DeviceNotTaken" -#define BUS_ERROR_OPERATION_IN_PROGRESS "org.freedesktop.login1.OperationInProgress" -#define BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED "org.freedesktop.login1.SleepVerbNotSupported" -#define BUS_ERROR_SESSION_BUSY "org.freedesktop.login1.SessionBusy" - -#define BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED "org.freedesktop.timedate1.AutomaticTimeSyncEnabled" - -#define BUS_ERROR_NO_SUCH_PROCESS "org.freedesktop.systemd1.NoSuchProcess" - -#define BUS_ERROR_NO_NAME_SERVERS "org.freedesktop.resolve1.NoNameServers" -#define BUS_ERROR_INVALID_REPLY "org.freedesktop.resolve1.InvalidReply" -#define BUS_ERROR_NO_SUCH_RR "org.freedesktop.resolve1.NoSuchRR" -#define BUS_ERROR_NO_RESOURCES "org.freedesktop.resolve1.NoResources" -#define BUS_ERROR_CNAME_LOOP "org.freedesktop.resolve1.CNameLoop" -#define BUS_ERROR_ABORTED "org.freedesktop.resolve1.Aborted" -#define BUS_ERROR_CONNECTION_FAILURE "org.freedesktop.resolve1.ConnectionFailure" -#define BUS_ERROR_NO_SUCH_SERVICE "org.freedesktop.resolve1.NoSuchService" -#define BUS_ERROR_DNSSEC_FAILED "org.freedesktop.resolve1.DnssecFailed" -#define BUS_ERROR_NO_TRUST_ANCHOR "org.freedesktop.resolve1.NoTrustAnchor" -#define BUS_ERROR_RR_TYPE_UNSUPPORTED "org.freedesktop.resolve1.ResourceRecordTypeUnsupported" -#define BUS_ERROR_NO_SUCH_LINK "org.freedesktop.resolve1.NoSuchLink" -#define BUS_ERROR_LINK_BUSY "org.freedesktop.resolve1.LinkBusy" -#define BUS_ERROR_NETWORK_DOWN "org.freedesktop.resolve1.NetworkDown" -#define _BUS_ERROR_DNS "org.freedesktop.resolve1.DnsError." - -#define BUS_ERROR_NO_SUCH_TRANSFER "org.freedesktop.import1.NoSuchTransfer" -#define BUS_ERROR_TRANSFER_IN_PROGRESS "org.freedesktop.import1.TransferInProgress" - -BUS_ERROR_MAP_ELF_USE(bus_common_errors); diff --git a/src/libsystemd/sd-bus/bus-container.c b/src/libsystemd/sd-bus/bus-container.c deleted file mode 100644 index 3191d27ded..0000000000 --- a/src/libsystemd/sd-bus/bus-container.c +++ /dev/null @@ -1,277 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <fcntl.h> -#include <unistd.h> - -#include "bus-container.h" -#include "bus-internal.h" -#include "bus-socket.h" -#include "fd-util.h" -#include "process-util.h" -#include "util.h" - -int bus_container_connect_socket(sd_bus *b) { - _cleanup_close_pair_ int pair[2] = { -1, -1 }; - _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, usernsfd = -1, rootfd = -1; - pid_t child; - siginfo_t si; - int r, error_buf = 0; - ssize_t n; - - assert(b); - assert(b->input_fd < 0); - assert(b->output_fd < 0); - assert(b->nspid > 0 || b->machine); - - if (b->nspid <= 0) { - r = container_get_leader(b->machine, &b->nspid); - if (r < 0) - return r; - } - - r = namespace_open(b->nspid, &pidnsfd, &mntnsfd, NULL, &usernsfd, &rootfd); - if (r < 0) - return r; - - b->input_fd = socket(b->sockaddr.sa.sa_family, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); - if (b->input_fd < 0) - return -errno; - - b->output_fd = b->input_fd; - - bus_socket_setup(b); - - if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0) - return -errno; - - child = fork(); - if (child < 0) - return -errno; - - if (child == 0) { - pid_t grandchild; - - pair[0] = safe_close(pair[0]); - - r = namespace_enter(pidnsfd, mntnsfd, -1, usernsfd, rootfd); - if (r < 0) - _exit(EXIT_FAILURE); - - /* We just changed PID namespace, however it will only - * take effect on the children we now fork. Hence, - * let's fork another time, and connect from this - * grandchild, so that SO_PEERCRED of our connection - * comes from a process from within the container, and - * not outside of it */ - - grandchild = fork(); - if (grandchild < 0) - _exit(EXIT_FAILURE); - - if (grandchild == 0) { - - r = connect(b->input_fd, &b->sockaddr.sa, b->sockaddr_size); - if (r < 0) { - /* Try to send error up */ - error_buf = errno; - (void) write(pair[1], &error_buf, sizeof(error_buf)); - _exit(EXIT_FAILURE); - } - - _exit(EXIT_SUCCESS); - } - - r = wait_for_terminate(grandchild, &si); - if (r < 0) - _exit(EXIT_FAILURE); - - if (si.si_code != CLD_EXITED) - _exit(EXIT_FAILURE); - - _exit(si.si_status); - } - - pair[1] = safe_close(pair[1]); - - r = wait_for_terminate(child, &si); - if (r < 0) - return r; - - n = read(pair[0], &error_buf, sizeof(error_buf)); - if (n < 0) - return -errno; - - if (n > 0) { - if (n != sizeof(error_buf)) - return -EIO; - - if (error_buf < 0) - return -EIO; - - if (error_buf == EINPROGRESS) - return 1; - - if (error_buf > 0) - return -error_buf; - } - - if (si.si_code != CLD_EXITED) - return -EIO; - - if (si.si_status != EXIT_SUCCESS) - return -EIO; - - return bus_socket_start_auth(b); -} - -int bus_container_connect_kernel(sd_bus *b) { - _cleanup_close_pair_ int pair[2] = { -1, -1 }; - _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, usernsfd = -1, rootfd = -1; - union { - struct cmsghdr cmsghdr; - uint8_t buf[CMSG_SPACE(sizeof(int))]; - } control = {}; - int error_buf = 0; - struct iovec iov = { - .iov_base = &error_buf, - .iov_len = sizeof(error_buf), - }; - struct msghdr mh = { - .msg_control = &control, - .msg_controllen = sizeof(control), - .msg_iov = &iov, - .msg_iovlen = 1, - }; - struct cmsghdr *cmsg; - pid_t child; - siginfo_t si; - int r, fd = -1; - ssize_t n; - - assert(b); - assert(b->input_fd < 0); - assert(b->output_fd < 0); - assert(b->nspid > 0 || b->machine); - - if (b->nspid <= 0) { - r = container_get_leader(b->machine, &b->nspid); - if (r < 0) - return r; - } - - r = namespace_open(b->nspid, &pidnsfd, &mntnsfd, NULL, &usernsfd, &rootfd); - if (r < 0) - return r; - - if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0) - return -errno; - - child = fork(); - if (child < 0) - return -errno; - - if (child == 0) { - pid_t grandchild; - - pair[0] = safe_close(pair[0]); - - r = namespace_enter(pidnsfd, mntnsfd, -1, usernsfd, rootfd); - if (r < 0) - _exit(EXIT_FAILURE); - - /* We just changed PID namespace, however it will only - * take effect on the children we now fork. Hence, - * let's fork another time, and connect from this - * grandchild, so that kdbus only sees the credentials - * of this process which comes from within the - * container, and not outside of it */ - - grandchild = fork(); - if (grandchild < 0) - _exit(EXIT_FAILURE); - - if (grandchild == 0) { - fd = open(b->kernel, O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) { - /* Try to send error up */ - error_buf = errno; - (void) write(pair[1], &error_buf, sizeof(error_buf)); - _exit(EXIT_FAILURE); - } - - r = send_one_fd(pair[1], fd, 0); - if (r < 0) - _exit(EXIT_FAILURE); - - _exit(EXIT_SUCCESS); - } - - r = wait_for_terminate(grandchild, &si); - if (r < 0) - _exit(EXIT_FAILURE); - - if (si.si_code != CLD_EXITED) - _exit(EXIT_FAILURE); - - _exit(si.si_status); - } - - pair[1] = safe_close(pair[1]); - - r = wait_for_terminate(child, &si); - if (r < 0) - return r; - - n = recvmsg(pair[0], &mh, MSG_NOSIGNAL|MSG_CMSG_CLOEXEC); - if (n < 0) - return -errno; - - CMSG_FOREACH(cmsg, &mh) { - if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { - int *fds; - unsigned n_fds; - - assert(fd < 0); - - fds = (int*) CMSG_DATA(cmsg); - n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); - - if (n_fds != 1) { - close_many(fds, n_fds); - return -EIO; - } - - fd = fds[0]; - } - } - - /* If there's an fd passed, we are good. */ - if (fd >= 0) { - b->input_fd = b->output_fd = fd; - return bus_kernel_take_fd(b); - } - - /* If there's an error passed, use it */ - if (n == sizeof(error_buf) && error_buf > 0) - return -error_buf; - - /* Otherwise, we have no clue */ - return -EIO; -} diff --git a/src/libsystemd/sd-bus/bus-container.h b/src/libsystemd/sd-bus/bus-container.h deleted file mode 100644 index 509ef45624..0000000000 --- a/src/libsystemd/sd-bus/bus-container.h +++ /dev/null @@ -1,25 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -int bus_container_connect_socket(sd_bus *b); -int bus_container_connect_kernel(sd_bus *b); diff --git a/src/libsystemd/sd-bus/bus-control.c b/src/libsystemd/sd-bus/bus-control.c deleted file mode 100644 index 05222b8d30..0000000000 --- a/src/libsystemd/sd-bus/bus-control.c +++ /dev/null @@ -1,1586 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#ifdef HAVE_VALGRIND_MEMCHECK_H -#include <valgrind/memcheck.h> -#endif - -#include <errno.h> -#include <stddef.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-bloom.h" -#include "bus-control.h" -#include "bus-internal.h" -#include "bus-message.h" -#include "bus-util.h" -#include "capability-util.h" -#include "stdio-util.h" -#include "string-util.h" -#include "strv.h" -#include "user-util.h" - -_public_ int sd_bus_get_unique_name(sd_bus *bus, const char **unique) { - int r; - - assert_return(bus, -EINVAL); - assert_return(unique, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!bus->bus_client) - return -EINVAL; - - r = bus_ensure_running(bus); - if (r < 0) - return r; - - *unique = bus->unique_name; - return 0; -} - -static int bus_request_name_kernel(sd_bus *bus, const char *name, uint64_t flags) { - struct kdbus_cmd *n; - size_t size, l; - int r; - - assert(bus); - assert(name); - - l = strlen(name) + 1; - size = offsetof(struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(l); - n = alloca0_align(size, 8); - n->size = size; - n->flags = request_name_flags_to_kdbus(flags); - - n->items[0].size = KDBUS_ITEM_HEADER_SIZE + l; - n->items[0].type = KDBUS_ITEM_NAME; - memcpy(n->items[0].str, name, l); - -#ifdef HAVE_VALGRIND_MEMCHECK_H - VALGRIND_MAKE_MEM_DEFINED(n, n->size); -#endif - - r = ioctl(bus->input_fd, KDBUS_CMD_NAME_ACQUIRE, n); - if (r < 0) - return -errno; - - if (n->return_flags & KDBUS_NAME_IN_QUEUE) - return 0; - - return 1; -} - -static int bus_request_name_dbus1(sd_bus *bus, const char *name, uint64_t flags) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - uint32_t ret, param = 0; - int r; - - assert(bus); - assert(name); - - if (flags & SD_BUS_NAME_ALLOW_REPLACEMENT) - param |= BUS_NAME_ALLOW_REPLACEMENT; - if (flags & SD_BUS_NAME_REPLACE_EXISTING) - param |= BUS_NAME_REPLACE_EXISTING; - if (!(flags & SD_BUS_NAME_QUEUE)) - param |= BUS_NAME_DO_NOT_QUEUE; - - r = sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "RequestName", - NULL, - &reply, - "su", - name, - param); - if (r < 0) - return r; - - r = sd_bus_message_read(reply, "u", &ret); - if (r < 0) - return r; - - if (ret == BUS_NAME_ALREADY_OWNER) - return -EALREADY; - else if (ret == BUS_NAME_EXISTS) - return -EEXIST; - else if (ret == BUS_NAME_IN_QUEUE) - return 0; - else if (ret == BUS_NAME_PRIMARY_OWNER) - return 1; - - return -EIO; -} - -_public_ int sd_bus_request_name(sd_bus *bus, const char *name, uint64_t flags) { - assert_return(bus, -EINVAL); - assert_return(name, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - assert_return(!(flags & ~(SD_BUS_NAME_ALLOW_REPLACEMENT|SD_BUS_NAME_REPLACE_EXISTING|SD_BUS_NAME_QUEUE)), -EINVAL); - assert_return(service_name_is_valid(name), -EINVAL); - assert_return(name[0] != ':', -EINVAL); - - if (!bus->bus_client) - return -EINVAL; - - /* Don't allow requesting the special driver and local names */ - if (STR_IN_SET(name, "org.freedesktop.DBus", "org.freedesktop.DBus.Local")) - return -EINVAL; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (bus->is_kernel) - return bus_request_name_kernel(bus, name, flags); - else - return bus_request_name_dbus1(bus, name, flags); -} - -static int bus_release_name_kernel(sd_bus *bus, const char *name) { - struct kdbus_cmd *n; - size_t size, l; - int r; - - assert(bus); - assert(name); - - l = strlen(name) + 1; - size = offsetof(struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(l); - n = alloca0_align(size, 8); - n->size = size; - - n->items[0].size = KDBUS_ITEM_HEADER_SIZE + l; - n->items[0].type = KDBUS_ITEM_NAME; - memcpy(n->items[0].str, name, l); - -#ifdef HAVE_VALGRIND_MEMCHECK_H - VALGRIND_MAKE_MEM_DEFINED(n, n->size); -#endif - r = ioctl(bus->input_fd, KDBUS_CMD_NAME_RELEASE, n); - if (r < 0) - return -errno; - - return 0; -} - -static int bus_release_name_dbus1(sd_bus *bus, const char *name) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - uint32_t ret; - int r; - - assert(bus); - assert(name); - - r = sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "ReleaseName", - NULL, - &reply, - "s", - name); - if (r < 0) - return r; - - r = sd_bus_message_read(reply, "u", &ret); - if (r < 0) - return r; - if (ret == BUS_NAME_NON_EXISTENT) - return -ESRCH; - if (ret == BUS_NAME_NOT_OWNER) - return -EADDRINUSE; - if (ret == BUS_NAME_RELEASED) - return 0; - - return -EINVAL; -} - -_public_ int sd_bus_release_name(sd_bus *bus, const char *name) { - assert_return(bus, -EINVAL); - assert_return(name, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - assert_return(service_name_is_valid(name), -EINVAL); - assert_return(name[0] != ':', -EINVAL); - - if (!bus->bus_client) - return -EINVAL; - - /* Don't allow releasing the special driver and local names */ - if (STR_IN_SET(name, "org.freedesktop.DBus", "org.freedesktop.DBus.Local")) - return -EINVAL; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (bus->is_kernel) - return bus_release_name_kernel(bus, name); - else - return bus_release_name_dbus1(bus, name); -} - -static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) { - struct kdbus_cmd_list cmd = { - .size = sizeof(cmd), - .flags = flags, - }; - struct kdbus_info *name_list, *name; - uint64_t previous_id = 0; - int r; - - /* Caller will free half-constructed list on failure... */ - - r = ioctl(bus->input_fd, KDBUS_CMD_LIST, &cmd); - if (r < 0) - return -errno; - - name_list = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd.offset); - - KDBUS_FOREACH(name, name_list, cmd.list_size) { - struct kdbus_item *item; - - if ((flags & KDBUS_LIST_UNIQUE) && name->id != previous_id && !(name->flags & KDBUS_HELLO_ACTIVATOR)) { - char *n; - - if (asprintf(&n, ":1.%llu", (unsigned long long) name->id) < 0) { - r = -ENOMEM; - goto fail; - } - - r = strv_consume(x, n); - if (r < 0) - goto fail; - - previous_id = name->id; - } - - KDBUS_ITEM_FOREACH(item, name, items) { - if (item->type == KDBUS_ITEM_OWNED_NAME) { - if (service_name_is_valid(item->name.name)) { - r = strv_extend(x, item->name.name); - if (r < 0) { - r = -ENOMEM; - goto fail; - } - } - } - } - } - - r = 0; - -fail: - bus_kernel_cmd_free(bus, cmd.offset); - return r; -} - -static int bus_list_names_kernel(sd_bus *bus, char ***acquired, char ***activatable) { - _cleanup_strv_free_ char **x = NULL, **y = NULL; - int r; - - if (acquired) { - r = kernel_get_list(bus, KDBUS_LIST_UNIQUE | KDBUS_LIST_NAMES, &x); - if (r < 0) - return r; - } - - if (activatable) { - r = kernel_get_list(bus, KDBUS_LIST_ACTIVATORS, &y); - if (r < 0) - return r; - - *activatable = y; - y = NULL; - } - - if (acquired) { - *acquired = x; - x = NULL; - } - - return 0; -} - -static int bus_list_names_dbus1(sd_bus *bus, char ***acquired, char ***activatable) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - _cleanup_strv_free_ char **x = NULL, **y = NULL; - int r; - - if (acquired) { - r = sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "ListNames", - NULL, - &reply, - NULL); - if (r < 0) - return r; - - r = sd_bus_message_read_strv(reply, &x); - if (r < 0) - return r; - - reply = sd_bus_message_unref(reply); - } - - if (activatable) { - r = sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "ListActivatableNames", - NULL, - &reply, - NULL); - if (r < 0) - return r; - - r = sd_bus_message_read_strv(reply, &y); - if (r < 0) - return r; - - *activatable = y; - y = NULL; - } - - if (acquired) { - *acquired = x; - x = NULL; - } - - return 0; -} - -_public_ int sd_bus_list_names(sd_bus *bus, char ***acquired, char ***activatable) { - assert_return(bus, -EINVAL); - assert_return(acquired || activatable, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!bus->bus_client) - return -EINVAL; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (bus->is_kernel) - return bus_list_names_kernel(bus, acquired, activatable); - else - return bus_list_names_dbus1(bus, acquired, activatable); -} - -static int bus_populate_creds_from_items( - sd_bus *bus, - struct kdbus_info *info, - uint64_t mask, - sd_bus_creds *c) { - - struct kdbus_item *item; - uint64_t m; - int r; - - assert(bus); - assert(info); - assert(c); - - KDBUS_ITEM_FOREACH(item, info, items) { - - switch (item->type) { - - case KDBUS_ITEM_PIDS: - - if (mask & SD_BUS_CREDS_PID && item->pids.pid > 0) { - c->pid = (pid_t) item->pids.pid; - c->mask |= SD_BUS_CREDS_PID; - } - - if (mask & SD_BUS_CREDS_TID && item->pids.tid > 0) { - c->tid = (pid_t) item->pids.tid; - c->mask |= SD_BUS_CREDS_TID; - } - - if (mask & SD_BUS_CREDS_PPID) { - if (item->pids.ppid > 0) { - c->ppid = (pid_t) item->pids.ppid; - c->mask |= SD_BUS_CREDS_PPID; - } else if (item->pids.pid == 1) { - /* The structure doesn't - * really distinguish the case - * where a process has no - * parent and where we don't - * know it because it could - * not be translated due to - * namespaces. However, we - * know that PID 1 has no - * parent process, hence let's - * patch that in, manually. */ - c->ppid = 0; - c->mask |= SD_BUS_CREDS_PPID; - } - } - - break; - - case KDBUS_ITEM_CREDS: - - if (mask & SD_BUS_CREDS_UID && (uid_t) item->creds.uid != UID_INVALID) { - c->uid = (uid_t) item->creds.uid; - c->mask |= SD_BUS_CREDS_UID; - } - - if (mask & SD_BUS_CREDS_EUID && (uid_t) item->creds.euid != UID_INVALID) { - c->euid = (uid_t) item->creds.euid; - c->mask |= SD_BUS_CREDS_EUID; - } - - if (mask & SD_BUS_CREDS_SUID && (uid_t) item->creds.suid != UID_INVALID) { - c->suid = (uid_t) item->creds.suid; - c->mask |= SD_BUS_CREDS_SUID; - } - - if (mask & SD_BUS_CREDS_FSUID && (uid_t) item->creds.fsuid != UID_INVALID) { - c->fsuid = (uid_t) item->creds.fsuid; - c->mask |= SD_BUS_CREDS_FSUID; - } - - if (mask & SD_BUS_CREDS_GID && (gid_t) item->creds.gid != GID_INVALID) { - c->gid = (gid_t) item->creds.gid; - c->mask |= SD_BUS_CREDS_GID; - } - - if (mask & SD_BUS_CREDS_EGID && (gid_t) item->creds.egid != GID_INVALID) { - c->egid = (gid_t) item->creds.egid; - c->mask |= SD_BUS_CREDS_EGID; - } - - if (mask & SD_BUS_CREDS_SGID && (gid_t) item->creds.sgid != GID_INVALID) { - c->sgid = (gid_t) item->creds.sgid; - c->mask |= SD_BUS_CREDS_SGID; - } - - if (mask & SD_BUS_CREDS_FSGID && (gid_t) item->creds.fsgid != GID_INVALID) { - c->fsgid = (gid_t) item->creds.fsgid; - c->mask |= SD_BUS_CREDS_FSGID; - } - - break; - - case KDBUS_ITEM_PID_COMM: - if (mask & SD_BUS_CREDS_COMM) { - r = free_and_strdup(&c->comm, item->str); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_COMM; - } - break; - - case KDBUS_ITEM_TID_COMM: - if (mask & SD_BUS_CREDS_TID_COMM) { - r = free_and_strdup(&c->tid_comm, item->str); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_TID_COMM; - } - break; - - case KDBUS_ITEM_EXE: - if (mask & SD_BUS_CREDS_EXE) { - r = free_and_strdup(&c->exe, item->str); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_EXE; - } - break; - - case KDBUS_ITEM_CMDLINE: - if (mask & SD_BUS_CREDS_CMDLINE) { - c->cmdline_size = item->size - offsetof(struct kdbus_item, data); - c->cmdline = memdup(item->data, c->cmdline_size); - if (!c->cmdline) - return -ENOMEM; - - c->mask |= SD_BUS_CREDS_CMDLINE; - } - break; - - case KDBUS_ITEM_CGROUP: - m = (SD_BUS_CREDS_CGROUP | SD_BUS_CREDS_UNIT | - SD_BUS_CREDS_USER_UNIT | SD_BUS_CREDS_SLICE | - SD_BUS_CREDS_SESSION | SD_BUS_CREDS_OWNER_UID) & mask; - - if (m) { - r = free_and_strdup(&c->cgroup, item->str); - if (r < 0) - return r; - - r = bus_get_root_path(bus); - if (r < 0) - return r; - - r = free_and_strdup(&c->cgroup_root, bus->cgroup_root); - if (r < 0) - return r; - - c->mask |= m; - } - break; - - case KDBUS_ITEM_CAPS: - m = (SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_PERMITTED_CAPS | - SD_BUS_CREDS_INHERITABLE_CAPS | SD_BUS_CREDS_BOUNDING_CAPS) & mask; - - if (m) { - if (item->caps.last_cap != cap_last_cap() || - item->size - offsetof(struct kdbus_item, caps.caps) < DIV_ROUND_UP(item->caps.last_cap, 32U) * 4 * 4) - return -EBADMSG; - - c->capability = memdup(item->caps.caps, item->size - offsetof(struct kdbus_item, caps.caps)); - if (!c->capability) - return -ENOMEM; - - c->mask |= m; - } - break; - - case KDBUS_ITEM_SECLABEL: - if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) { - r = free_and_strdup(&c->label, item->str); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT; - } - break; - - case KDBUS_ITEM_AUDIT: - if (mask & SD_BUS_CREDS_AUDIT_SESSION_ID) { - c->audit_session_id = (uint32_t) item->audit.sessionid; - c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; - } - - if (mask & SD_BUS_CREDS_AUDIT_LOGIN_UID) { - c->audit_login_uid = (uid_t) item->audit.loginuid; - c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; - } - break; - - case KDBUS_ITEM_OWNED_NAME: - if ((mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) && service_name_is_valid(item->name.name)) { - r = strv_extend(&c->well_known_names, item->name.name); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES; - } - break; - - case KDBUS_ITEM_CONN_DESCRIPTION: - if (mask & SD_BUS_CREDS_DESCRIPTION) { - r = free_and_strdup(&c->description, item->str); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_DESCRIPTION; - } - break; - - case KDBUS_ITEM_AUXGROUPS: - if (mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) { - size_t i, n; - uid_t *g; - - n = (item->size - offsetof(struct kdbus_item, data64)) / sizeof(uint64_t); - g = new(gid_t, n); - if (!g) - return -ENOMEM; - - for (i = 0; i < n; i++) - g[i] = item->data64[i]; - - free(c->supplementary_gids); - c->supplementary_gids = g; - c->n_supplementary_gids = n; - - c->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS; - } - break; - } - } - - return 0; -} - -int bus_get_name_creds_kdbus( - sd_bus *bus, - const char *name, - uint64_t mask, - bool allow_activator, - sd_bus_creds **creds) { - - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL; - struct kdbus_cmd_info *cmd; - struct kdbus_info *conn_info; - size_t size, l; - uint64_t id; - int r; - - if (streq(name, "org.freedesktop.DBus")) - return -EOPNOTSUPP; - - r = bus_kernel_parse_unique_name(name, &id); - if (r < 0) - return r; - if (r > 0) { - size = offsetof(struct kdbus_cmd_info, items); - cmd = alloca0_align(size, 8); - cmd->id = id; - } else { - l = strlen(name) + 1; - size = offsetof(struct kdbus_cmd_info, items) + KDBUS_ITEM_SIZE(l); - cmd = alloca0_align(size, 8); - cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + l; - cmd->items[0].type = KDBUS_ITEM_NAME; - memcpy(cmd->items[0].str, name, l); - } - - /* If augmentation is on, and the bus didn't provide us - * the bits we want, then ask for the PID/TID so that we - * can read the rest from /proc. */ - if ((mask & SD_BUS_CREDS_AUGMENT) && - (mask & (SD_BUS_CREDS_PPID| - SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID| - SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID| - SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE| - SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID| - SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS| - SD_BUS_CREDS_SELINUX_CONTEXT| - SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID))) - mask |= SD_BUS_CREDS_PID; - - cmd->size = size; - cmd->attach_flags = attach_flags_to_kdbus(mask); - - r = ioctl(bus->input_fd, KDBUS_CMD_CONN_INFO, cmd); - if (r < 0) - return -errno; - - conn_info = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd->offset); - - /* Non-activated names are considered not available */ - if (!allow_activator && (conn_info->flags & KDBUS_HELLO_ACTIVATOR)) { - if (name[0] == ':') - r = -ENXIO; - else - r = -ESRCH; - goto fail; - } - - c = bus_creds_new(); - if (!c) { - r = -ENOMEM; - goto fail; - } - - if (mask & SD_BUS_CREDS_UNIQUE_NAME) { - if (asprintf(&c->unique_name, ":1.%llu", (unsigned long long) conn_info->id) < 0) { - r = -ENOMEM; - goto fail; - } - - c->mask |= SD_BUS_CREDS_UNIQUE_NAME; - } - - /* If KDBUS_ITEM_OWNED_NAME is requested then we'll get 0 of - them in case the service has no names. This does not mean - however that the list of owned names could not be - acquired. Hence, let's explicitly clarify that the data is - complete. */ - c->mask |= mask & SD_BUS_CREDS_WELL_KNOWN_NAMES; - - r = bus_populate_creds_from_items(bus, conn_info, mask, c); - if (r < 0) - goto fail; - - r = bus_creds_add_more(c, mask, 0, 0); - if (r < 0) - goto fail; - - if (creds) { - *creds = c; - c = NULL; - } - - r = 0; - -fail: - bus_kernel_cmd_free(bus, cmd->offset); - return r; -} - -static int bus_get_name_creds_dbus1( - sd_bus *bus, - const char *name, - uint64_t mask, - sd_bus_creds **creds) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply_unique = NULL, *reply = NULL; - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL; - const char *unique = NULL; - pid_t pid = 0; - int r; - - /* Only query the owner if the caller wants to know it or if - * the caller just wants to check whether a name exists */ - if ((mask & SD_BUS_CREDS_UNIQUE_NAME) || mask == 0) { - r = sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "GetNameOwner", - NULL, - &reply_unique, - "s", - name); - if (r < 0) - return r; - - r = sd_bus_message_read(reply_unique, "s", &unique); - if (r < 0) - return r; - } - - if (mask != 0) { - c = bus_creds_new(); - if (!c) - return -ENOMEM; - - if ((mask & SD_BUS_CREDS_UNIQUE_NAME) && unique) { - c->unique_name = strdup(unique); - if (!c->unique_name) - return -ENOMEM; - - c->mask |= SD_BUS_CREDS_UNIQUE_NAME; - } - - if ((mask & SD_BUS_CREDS_PID) || - ((mask & SD_BUS_CREDS_AUGMENT) && - (mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID| - SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID| - SD_BUS_CREDS_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE| - SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID| - SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS| - SD_BUS_CREDS_SELINUX_CONTEXT| - SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID)))) { - - uint32_t u; - - r = sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "GetConnectionUnixProcessID", - NULL, - &reply, - "s", - unique ? unique : name); - if (r < 0) - return r; - - r = sd_bus_message_read(reply, "u", &u); - if (r < 0) - return r; - - pid = u; - if (mask & SD_BUS_CREDS_PID) { - c->pid = u; - c->mask |= SD_BUS_CREDS_PID; - } - - reply = sd_bus_message_unref(reply); - } - - if (mask & SD_BUS_CREDS_EUID) { - uint32_t u; - - r = sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "GetConnectionUnixUser", - NULL, - &reply, - "s", - unique ? unique : name); - if (r < 0) - return r; - - r = sd_bus_message_read(reply, "u", &u); - if (r < 0) - return r; - - c->euid = u; - c->mask |= SD_BUS_CREDS_EUID; - - reply = sd_bus_message_unref(reply); - } - - if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - const void *p = NULL; - size_t sz = 0; - - r = sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "GetConnectionSELinuxSecurityContext", - &error, - &reply, - "s", - unique ? unique : name); - if (r < 0) { - if (!sd_bus_error_has_name(&error, "org.freedesktop.DBus.Error.SELinuxSecurityContextUnknown")) - return r; - } else { - r = sd_bus_message_read_array(reply, 'y', &p, &sz); - if (r < 0) - return r; - - c->label = strndup(p, sz); - if (!c->label) - return -ENOMEM; - - c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT; - } - } - - r = bus_creds_add_more(c, mask, pid, 0); - if (r < 0) - return r; - } - - if (creds) { - *creds = c; - c = NULL; - } - - return 0; -} - -_public_ int sd_bus_get_name_creds( - sd_bus *bus, - const char *name, - uint64_t mask, - sd_bus_creds **creds) { - - assert_return(bus, -EINVAL); - assert_return(name, -EINVAL); - assert_return((mask & ~SD_BUS_CREDS_AUGMENT) <= _SD_BUS_CREDS_ALL, -EOPNOTSUPP); - assert_return(mask == 0 || creds, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - assert_return(service_name_is_valid(name), -EINVAL); - - if (!bus->bus_client) - return -EINVAL; - - if (streq(name, "org.freedesktop.DBus.Local")) - return -EINVAL; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (bus->is_kernel) - return bus_get_name_creds_kdbus(bus, name, mask, false, creds); - else - return bus_get_name_creds_dbus1(bus, name, mask, creds); -} - -static int bus_get_owner_creds_kdbus(sd_bus *bus, uint64_t mask, sd_bus_creds **ret) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL; - struct kdbus_cmd_info cmd = { - .size = sizeof(struct kdbus_cmd_info), - }; - struct kdbus_info *creator_info; - pid_t pid = 0; - int r; - - c = bus_creds_new(); - if (!c) - return -ENOMEM; - - /* If augmentation is on, and the bus doesn't didn't allow us - * to get the bits we want, then ask for the PID/TID so that we - * can read the rest from /proc. */ - if ((mask & SD_BUS_CREDS_AUGMENT) && - (mask & (SD_BUS_CREDS_PPID| - SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID| - SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID| - SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE| - SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID| - SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS| - SD_BUS_CREDS_SELINUX_CONTEXT| - SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID))) - mask |= SD_BUS_CREDS_PID; - - cmd.attach_flags = attach_flags_to_kdbus(mask); - - r = ioctl(bus->input_fd, KDBUS_CMD_BUS_CREATOR_INFO, &cmd); - if (r < 0) - return -errno; - - creator_info = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd.offset); - - r = bus_populate_creds_from_items(bus, creator_info, mask, c); - bus_kernel_cmd_free(bus, cmd.offset); - if (r < 0) - return r; - - r = bus_creds_add_more(c, mask, pid, 0); - if (r < 0) - return r; - - *ret = c; - c = NULL; - return 0; -} - -static int bus_get_owner_creds_dbus1(sd_bus *bus, uint64_t mask, sd_bus_creds **ret) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL; - pid_t pid = 0; - bool do_label; - int r; - - assert(bus); - - do_label = bus->label && (mask & SD_BUS_CREDS_SELINUX_CONTEXT); - - /* Avoid allocating anything if we have no chance of returning useful data */ - if (!bus->ucred_valid && !do_label) - return -ENODATA; - - c = bus_creds_new(); - if (!c) - return -ENOMEM; - - if (bus->ucred_valid) { - if (bus->ucred.pid > 0) { - pid = c->pid = bus->ucred.pid; - c->mask |= SD_BUS_CREDS_PID & mask; - } - - if (bus->ucred.uid != UID_INVALID) { - c->euid = bus->ucred.uid; - c->mask |= SD_BUS_CREDS_EUID & mask; - } - - if (bus->ucred.gid != GID_INVALID) { - c->egid = bus->ucred.gid; - c->mask |= SD_BUS_CREDS_EGID & mask; - } - } - - if (do_label) { - c->label = strdup(bus->label); - if (!c->label) - return -ENOMEM; - - c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT; - } - - r = bus_creds_add_more(c, mask, pid, 0); - if (r < 0) - return r; - - *ret = c; - c = NULL; - return 0; -} - -_public_ int sd_bus_get_owner_creds(sd_bus *bus, uint64_t mask, sd_bus_creds **ret) { - assert_return(bus, -EINVAL); - assert_return((mask & ~SD_BUS_CREDS_AUGMENT) <= _SD_BUS_CREDS_ALL, -EOPNOTSUPP); - assert_return(ret, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (bus->is_kernel) - return bus_get_owner_creds_kdbus(bus, mask, ret); - else - return bus_get_owner_creds_dbus1(bus, mask, ret); -} - -static int add_name_change_match(sd_bus *bus, - uint64_t cookie, - const char *name, - const char *old_owner, - const char *new_owner) { - - uint64_t name_id = KDBUS_MATCH_ID_ANY, old_owner_id = 0, new_owner_id = 0; - int is_name_id = -1, r; - struct kdbus_item *item; - - assert(bus); - - /* If we encounter a match that could match against - * NameOwnerChanged messages, then we need to create - * KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE} and - * KDBUS_ITEM_ID_{ADD,REMOVE} matches for it, possibly - * multiple if the match is underspecified. - * - * The NameOwnerChanged signals take three parameters with - * unique or well-known names, but only some forms actually - * exist: - * - * WELLKNOWN, "", UNIQUE → KDBUS_ITEM_NAME_ADD - * WELLKNOWN, UNIQUE, "" → KDBUS_ITEM_NAME_REMOVE - * WELLKNOWN, UNIQUE, UNIQUE → KDBUS_ITEM_NAME_CHANGE - * UNIQUE, "", UNIQUE → KDBUS_ITEM_ID_ADD - * UNIQUE, UNIQUE, "" → KDBUS_ITEM_ID_REMOVE - * - * For the latter two the two unique names must be identical. - * - * */ - - if (name) { - is_name_id = bus_kernel_parse_unique_name(name, &name_id); - if (is_name_id < 0) - return 0; - } - - if (!isempty(old_owner)) { - r = bus_kernel_parse_unique_name(old_owner, &old_owner_id); - if (r < 0) - return 0; - if (r == 0) - return 0; - if (is_name_id > 0 && old_owner_id != name_id) - return 0; - } else - old_owner_id = KDBUS_MATCH_ID_ANY; - - if (!isempty(new_owner)) { - r = bus_kernel_parse_unique_name(new_owner, &new_owner_id); - if (r < 0) - return r; - if (r == 0) - return 0; - if (is_name_id > 0 && new_owner_id != name_id) - return 0; - } else - new_owner_id = KDBUS_MATCH_ID_ANY; - - if (is_name_id <= 0) { - struct kdbus_cmd_match *m; - size_t sz, l; - - /* If the name argument is missing or is a well-known - * name, then add KDBUS_ITEM_NAME_{ADD,REMOVE,CHANGE} - * matches for it */ - - l = name ? strlen(name) + 1 : 0; - - sz = ALIGN8(offsetof(struct kdbus_cmd_match, items) + - offsetof(struct kdbus_item, name_change) + - offsetof(struct kdbus_notify_name_change, name) + - l); - - m = alloca0_align(sz, 8); - m->size = sz; - m->cookie = cookie; - - item = m->items; - item->size = - offsetof(struct kdbus_item, name_change) + - offsetof(struct kdbus_notify_name_change, name) + - l; - - item->name_change.old_id.id = old_owner_id; - item->name_change.new_id.id = new_owner_id; - - if (name) - memcpy(item->name_change.name, name, l); - - /* If the old name is unset or empty, then - * this can match against added names */ - if (isempty(old_owner)) { - item->type = KDBUS_ITEM_NAME_ADD; - - r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m); - if (r < 0) - return -errno; - } - - /* If the new name is unset or empty, then - * this can match against removed names */ - if (isempty(new_owner)) { - item->type = KDBUS_ITEM_NAME_REMOVE; - - r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m); - if (r < 0) - return -errno; - } - - /* The CHANGE match we need in either case, because - * what is reported as a name change by the kernel - * might just be an owner change between starter and - * normal clients. For userspace such a change should - * be considered a removal/addition, hence let's - * subscribe to this unconditionally. */ - item->type = KDBUS_ITEM_NAME_CHANGE; - r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m); - if (r < 0) - return -errno; - } - - if (is_name_id != 0) { - struct kdbus_cmd_match *m; - uint64_t sz; - - /* If the name argument is missing or is a unique - * name, then add KDBUS_ITEM_ID_{ADD,REMOVE} matches - * for it */ - - sz = ALIGN8(offsetof(struct kdbus_cmd_match, items) + - offsetof(struct kdbus_item, id_change) + - sizeof(struct kdbus_notify_id_change)); - - m = alloca0_align(sz, 8); - m->size = sz; - m->cookie = cookie; - - item = m->items; - item->size = - offsetof(struct kdbus_item, id_change) + - sizeof(struct kdbus_notify_id_change); - item->id_change.id = name_id; - - /* If the old name is unset or empty, then this can - * match against added ids */ - if (isempty(old_owner)) { - item->type = KDBUS_ITEM_ID_ADD; - if (!isempty(new_owner)) - item->id_change.id = new_owner_id; - - r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m); - if (r < 0) - return -errno; - } - - /* If thew new name is unset or empty, then this can - * match against removed ids */ - if (isempty(new_owner)) { - item->type = KDBUS_ITEM_ID_REMOVE; - if (!isempty(old_owner)) - item->id_change.id = old_owner_id; - - r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m); - if (r < 0) - return -errno; - } - } - - return 0; -} - -int bus_add_match_internal_kernel( - sd_bus *bus, - struct bus_match_component *components, - unsigned n_components, - uint64_t cookie) { - - struct kdbus_cmd_match *m; - struct kdbus_item *item; - uint64_t *bloom; - size_t sz; - const char *sender = NULL; - size_t sender_length = 0; - uint64_t src_id = KDBUS_MATCH_ID_ANY, dst_id = KDBUS_MATCH_ID_ANY; - bool using_bloom = false; - unsigned i; - bool matches_name_change = true; - const char *name_change_arg[3] = {}; - int r; - - assert(bus); - - /* Monitor streams don't support matches, make this a NOP */ - if (bus->hello_flags & KDBUS_HELLO_MONITOR) - return 0; - - bloom = alloca0(bus->bloom_size); - - sz = ALIGN8(offsetof(struct kdbus_cmd_match, items)); - - for (i = 0; i < n_components; i++) { - struct bus_match_component *c = &components[i]; - - switch (c->type) { - - case BUS_MATCH_SENDER: - if (!streq(c->value_str, "org.freedesktop.DBus")) - matches_name_change = false; - - r = bus_kernel_parse_unique_name(c->value_str, &src_id); - if (r < 0) - return r; - else if (r > 0) - sz += ALIGN8(offsetof(struct kdbus_item, id) + sizeof(uint64_t)); - else { - sender = c->value_str; - sender_length = strlen(sender); - sz += ALIGN8(offsetof(struct kdbus_item, str) + sender_length + 1); - } - - break; - - case BUS_MATCH_MESSAGE_TYPE: - if (c->value_u8 != SD_BUS_MESSAGE_SIGNAL) - matches_name_change = false; - - bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "message-type", bus_message_type_to_string(c->value_u8)); - using_bloom = true; - break; - - case BUS_MATCH_INTERFACE: - if (!streq(c->value_str, "org.freedesktop.DBus")) - matches_name_change = false; - - bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "interface", c->value_str); - using_bloom = true; - break; - - case BUS_MATCH_MEMBER: - if (!streq(c->value_str, "NameOwnerChanged")) - matches_name_change = false; - - bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "member", c->value_str); - using_bloom = true; - break; - - case BUS_MATCH_PATH: - if (!streq(c->value_str, "/org/freedesktop/DBus")) - matches_name_change = false; - - bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "path", c->value_str); - using_bloom = true; - break; - - case BUS_MATCH_PATH_NAMESPACE: - bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "path-slash-prefix", c->value_str); - using_bloom = true; - break; - - case BUS_MATCH_ARG...BUS_MATCH_ARG_LAST: { - char buf[sizeof("arg")-1 + 2 + 1]; - - if (c->type - BUS_MATCH_ARG < 3) - name_change_arg[c->type - BUS_MATCH_ARG] = c->value_str; - - xsprintf(buf, "arg%i", c->type - BUS_MATCH_ARG); - bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, buf, c->value_str); - using_bloom = true; - break; - } - - case BUS_MATCH_ARG_HAS...BUS_MATCH_ARG_HAS_LAST: { - char buf[sizeof("arg")-1 + 2 + sizeof("-has")]; - - xsprintf(buf, "arg%i-has", c->type - BUS_MATCH_ARG_HAS); - bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, buf, c->value_str); - using_bloom = true; - break; - } - - case BUS_MATCH_ARG_PATH...BUS_MATCH_ARG_PATH_LAST: - /* - * XXX: DBus spec defines arg[0..63]path= matching to be - * a two-way glob. That is, if either string is a prefix - * of the other, it matches. - * This is really hard to realize in bloom-filters, as - * we would have to create a bloom-match for each prefix - * of @c->value_str. This is excessive, hence we just - * ignore all those matches and accept everything from - * the kernel. People should really avoid those matches. - * If they're used in real-life some day, we will have - * to properly support multiple-matches here. - */ - break; - - case BUS_MATCH_ARG_NAMESPACE...BUS_MATCH_ARG_NAMESPACE_LAST: { - char buf[sizeof("arg")-1 + 2 + sizeof("-dot-prefix")]; - - xsprintf(buf, "arg%i-dot-prefix", c->type - BUS_MATCH_ARG_NAMESPACE); - bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, buf, c->value_str); - using_bloom = true; - break; - } - - case BUS_MATCH_DESTINATION: - /* - * Kernel only supports matching on destination IDs, but - * not on destination names. So just skip the - * destination name restriction and verify it in - * user-space on retrieval. - */ - r = bus_kernel_parse_unique_name(c->value_str, &dst_id); - if (r < 0) - return r; - else if (r > 0) - sz += ALIGN8(offsetof(struct kdbus_item, id) + sizeof(uint64_t)); - - /* if not a broadcast, it cannot be a name-change */ - if (r <= 0 || dst_id != KDBUS_DST_ID_BROADCAST) - matches_name_change = false; - - break; - - case BUS_MATCH_ROOT: - case BUS_MATCH_VALUE: - case BUS_MATCH_LEAF: - case _BUS_MATCH_NODE_TYPE_MAX: - case _BUS_MATCH_NODE_TYPE_INVALID: - assert_not_reached("Invalid match type?"); - } - } - - if (using_bloom) - sz += ALIGN8(offsetof(struct kdbus_item, data64) + bus->bloom_size); - - m = alloca0_align(sz, 8); - m->size = sz; - m->cookie = cookie; - - item = m->items; - - if (src_id != KDBUS_MATCH_ID_ANY) { - item->size = offsetof(struct kdbus_item, id) + sizeof(uint64_t); - item->type = KDBUS_ITEM_ID; - item->id = src_id; - item = KDBUS_ITEM_NEXT(item); - } - - if (dst_id != KDBUS_MATCH_ID_ANY) { - item->size = offsetof(struct kdbus_item, id) + sizeof(uint64_t); - item->type = KDBUS_ITEM_DST_ID; - item->id = dst_id; - item = KDBUS_ITEM_NEXT(item); - } - - if (using_bloom) { - item->size = offsetof(struct kdbus_item, data64) + bus->bloom_size; - item->type = KDBUS_ITEM_BLOOM_MASK; - memcpy(item->data64, bloom, bus->bloom_size); - item = KDBUS_ITEM_NEXT(item); - } - - if (sender) { - item->size = offsetof(struct kdbus_item, str) + sender_length + 1; - item->type = KDBUS_ITEM_NAME; - memcpy(item->str, sender, sender_length + 1); - } - - r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m); - if (r < 0) - return -errno; - - if (matches_name_change) { - - /* If this match could theoretically match - * NameOwnerChanged messages, we need to - * install a second non-bloom filter explitly - * for it */ - - r = add_name_change_match(bus, cookie, name_change_arg[0], name_change_arg[1], name_change_arg[2]); - if (r < 0) - return r; - } - - return 0; -} - -#define internal_match(bus, m) \ - ((bus)->hello_flags & KDBUS_HELLO_MONITOR \ - ? (isempty(m) ? "eavesdrop='true'" : strjoina((m), ",eavesdrop='true'")) \ - : (m)) - -static int bus_add_match_internal_dbus1( - sd_bus *bus, - const char *match) { - - const char *e; - - assert(bus); - assert(match); - - e = internal_match(bus, match); - - return sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "AddMatch", - NULL, - NULL, - "s", - e); -} - -int bus_add_match_internal( - sd_bus *bus, - const char *match, - struct bus_match_component *components, - unsigned n_components, - uint64_t cookie) { - - assert(bus); - - if (!bus->bus_client) - return -EINVAL; - - if (bus->is_kernel) - return bus_add_match_internal_kernel(bus, components, n_components, cookie); - else - return bus_add_match_internal_dbus1(bus, match); -} - -int bus_remove_match_internal_kernel( - sd_bus *bus, - uint64_t cookie) { - - struct kdbus_cmd_match m = { - .size = offsetof(struct kdbus_cmd_match, items), - .cookie = cookie, - }; - int r; - - assert(bus); - - /* Monitor streams don't support matches, make this a NOP */ - if (bus->hello_flags & KDBUS_HELLO_MONITOR) - return 0; - - r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_REMOVE, &m); - if (r < 0) - return -errno; - - return 0; -} - -static int bus_remove_match_internal_dbus1( - sd_bus *bus, - const char *match) { - - const char *e; - - assert(bus); - assert(match); - - e = internal_match(bus, match); - - return sd_bus_call_method( - bus, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "RemoveMatch", - NULL, - NULL, - "s", - e); -} - -int bus_remove_match_internal( - sd_bus *bus, - const char *match, - uint64_t cookie) { - - assert(bus); - - if (!bus->bus_client) - return -EINVAL; - - if (bus->is_kernel) - return bus_remove_match_internal_kernel(bus, cookie); - else - return bus_remove_match_internal_dbus1(bus, match); -} - -_public_ int sd_bus_get_name_machine_id(sd_bus *bus, const char *name, sd_id128_t *machine) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL; - const char *mid; - int r; - - assert_return(bus, -EINVAL); - assert_return(name, -EINVAL); - assert_return(machine, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - assert_return(service_name_is_valid(name), -EINVAL); - - if (!bus->bus_client) - return -EINVAL; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (streq_ptr(name, bus->unique_name)) - return sd_id128_get_machine(machine); - - r = sd_bus_message_new_method_call( - bus, - &m, - name, - "/", - "org.freedesktop.DBus.Peer", - "GetMachineId"); - if (r < 0) - return r; - - r = sd_bus_message_set_auto_start(m, false); - if (r < 0) - return r; - - r = sd_bus_call(bus, m, 0, NULL, &reply); - if (r < 0) - return r; - - r = sd_bus_message_read(reply, "s", &mid); - if (r < 0) - return r; - - return sd_id128_from_string(mid, machine); -} diff --git a/src/libsystemd/sd-bus/bus-control.h b/src/libsystemd/sd-bus/bus-control.h deleted file mode 100644 index c181aa7959..0000000000 --- a/src/libsystemd/sd-bus/bus-control.h +++ /dev/null @@ -1,32 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "bus-match.h" - -int bus_add_match_internal(sd_bus *bus, const char *match, struct bus_match_component *components, unsigned n_components, uint64_t cookie); -int bus_remove_match_internal(sd_bus *bus, const char *match, uint64_t cookie); - -int bus_add_match_internal_kernel(sd_bus *bus, struct bus_match_component *components, unsigned n_components, uint64_t cookie); -int bus_remove_match_internal_kernel(sd_bus *bus, uint64_t cookie); - -int bus_get_name_creds_kdbus(sd_bus *bus, const char *name, uint64_t mask, bool allow_activator, sd_bus_creds **creds); diff --git a/src/libsystemd/sd-bus/bus-convenience.c b/src/libsystemd/sd-bus/bus-convenience.c deleted file mode 100644 index 2d06bf541f..0000000000 --- a/src/libsystemd/sd-bus/bus-convenience.c +++ /dev/null @@ -1,626 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-internal.h" -#include "bus-message.h" -#include "bus-signature.h" -#include "bus-type.h" -#include "bus-util.h" -#include "string-util.h" - -_public_ int sd_bus_emit_signal( - sd_bus *bus, - const char *path, - const char *interface, - const char *member, - const char *types, ...) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - r = sd_bus_message_new_signal(bus, &m, path, interface, member); - if (r < 0) - return r; - - if (!isempty(types)) { - va_list ap; - - va_start(ap, types); - r = bus_message_append_ap(m, types, ap); - va_end(ap); - if (r < 0) - return r; - } - - return sd_bus_send(bus, m, NULL); -} - -_public_ int sd_bus_call_method_async( - sd_bus *bus, - sd_bus_slot **slot, - const char *destination, - const char *path, - const char *interface, - const char *member, - sd_bus_message_handler_t callback, - void *userdata, - const char *types, ...) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - r = sd_bus_message_new_method_call(bus, &m, destination, path, interface, member); - if (r < 0) - return r; - - if (!isempty(types)) { - va_list ap; - - va_start(ap, types); - r = bus_message_append_ap(m, types, ap); - va_end(ap); - if (r < 0) - return r; - } - - return sd_bus_call_async(bus, slot, m, callback, userdata, 0); -} - -_public_ int sd_bus_call_method( - sd_bus *bus, - const char *destination, - const char *path, - const char *interface, - const char *member, - sd_bus_error *error, - sd_bus_message **reply, - const char *types, ...) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - bus_assert_return(bus, -EINVAL, error); - bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); - - if (!BUS_IS_OPEN(bus->state)) { - r = -ENOTCONN; - goto fail; - } - - r = sd_bus_message_new_method_call(bus, &m, destination, path, interface, member); - if (r < 0) - goto fail; - - if (!isempty(types)) { - va_list ap; - - va_start(ap, types); - r = bus_message_append_ap(m, types, ap); - va_end(ap); - if (r < 0) - goto fail; - } - - return sd_bus_call(bus, m, 0, error, reply); - -fail: - return sd_bus_error_set_errno(error, r); -} - -_public_ int sd_bus_reply_method_return( - sd_bus_message *call, - const char *types, ...) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - assert_return(call, -EINVAL); - assert_return(call->sealed, -EPERM); - assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); - assert_return(call->bus, -EINVAL); - assert_return(!bus_pid_changed(call->bus), -ECHILD); - - if (!BUS_IS_OPEN(call->bus->state)) - return -ENOTCONN; - - if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) - return 0; - - r = sd_bus_message_new_method_return(call, &m); - if (r < 0) - return r; - - if (!isempty(types)) { - va_list ap; - - va_start(ap, types); - r = bus_message_append_ap(m, types, ap); - va_end(ap); - if (r < 0) - return r; - } - - return sd_bus_send(call->bus, m, NULL); -} - -_public_ int sd_bus_reply_method_error( - sd_bus_message *call, - const sd_bus_error *e) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - assert_return(call, -EINVAL); - assert_return(call->sealed, -EPERM); - assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); - assert_return(sd_bus_error_is_set(e), -EINVAL); - assert_return(call->bus, -EINVAL); - assert_return(!bus_pid_changed(call->bus), -ECHILD); - - if (!BUS_IS_OPEN(call->bus->state)) - return -ENOTCONN; - - if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) - return 0; - - r = sd_bus_message_new_method_error(call, &m, e); - if (r < 0) - return r; - - return sd_bus_send(call->bus, m, NULL); -} - -_public_ int sd_bus_reply_method_errorf( - sd_bus_message *call, - const char *name, - const char *format, - ...) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - va_list ap; - - assert_return(call, -EINVAL); - assert_return(call->sealed, -EPERM); - assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); - assert_return(call->bus, -EINVAL); - assert_return(!bus_pid_changed(call->bus), -ECHILD); - - if (!BUS_IS_OPEN(call->bus->state)) - return -ENOTCONN; - - if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) - return 0; - - va_start(ap, format); - bus_error_setfv(&error, name, format, ap); - va_end(ap); - - return sd_bus_reply_method_error(call, &error); -} - -_public_ int sd_bus_reply_method_errno( - sd_bus_message *call, - int error, - const sd_bus_error *p) { - - _cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL; - - assert_return(call, -EINVAL); - assert_return(call->sealed, -EPERM); - assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); - assert_return(call->bus, -EINVAL); - assert_return(!bus_pid_changed(call->bus), -ECHILD); - - if (!BUS_IS_OPEN(call->bus->state)) - return -ENOTCONN; - - if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) - return 0; - - if (sd_bus_error_is_set(p)) - return sd_bus_reply_method_error(call, p); - - sd_bus_error_set_errno(&berror, error); - - return sd_bus_reply_method_error(call, &berror); -} - -_public_ int sd_bus_reply_method_errnof( - sd_bus_message *call, - int error, - const char *format, - ...) { - - _cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL; - va_list ap; - - assert_return(call, -EINVAL); - assert_return(call->sealed, -EPERM); - assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); - assert_return(call->bus, -EINVAL); - assert_return(!bus_pid_changed(call->bus), -ECHILD); - - if (!BUS_IS_OPEN(call->bus->state)) - return -ENOTCONN; - - if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) - return 0; - - va_start(ap, format); - sd_bus_error_set_errnofv(&berror, error, format, ap); - va_end(ap); - - return sd_bus_reply_method_error(call, &berror); -} - -_public_ int sd_bus_get_property( - sd_bus *bus, - const char *destination, - const char *path, - const char *interface, - const char *member, - sd_bus_error *error, - sd_bus_message **reply, - const char *type) { - - sd_bus_message *rep = NULL; - int r; - - bus_assert_return(bus, -EINVAL, error); - bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error); - bus_assert_return(member_name_is_valid(member), -EINVAL, error); - bus_assert_return(reply, -EINVAL, error); - bus_assert_return(signature_is_single(type, false), -EINVAL, error); - bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); - - if (!BUS_IS_OPEN(bus->state)) { - r = -ENOTCONN; - goto fail; - } - - r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &rep, "ss", strempty(interface), member); - if (r < 0) - return r; - - r = sd_bus_message_enter_container(rep, 'v', type); - if (r < 0) { - sd_bus_message_unref(rep); - goto fail; - } - - *reply = rep; - return 0; - -fail: - return sd_bus_error_set_errno(error, r); -} - -_public_ int sd_bus_get_property_trivial( - sd_bus *bus, - const char *destination, - const char *path, - const char *interface, - const char *member, - sd_bus_error *error, - char type, void *ptr) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - int r; - - bus_assert_return(bus, -EINVAL, error); - bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error); - bus_assert_return(member_name_is_valid(member), -EINVAL, error); - bus_assert_return(bus_type_is_trivial(type), -EINVAL, error); - bus_assert_return(ptr, -EINVAL, error); - bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); - - if (!BUS_IS_OPEN(bus->state)) { - r = -ENOTCONN; - goto fail; - } - - r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member); - if (r < 0) - return r; - - r = sd_bus_message_enter_container(reply, 'v', CHAR_TO_STR(type)); - if (r < 0) - goto fail; - - r = sd_bus_message_read_basic(reply, type, ptr); - if (r < 0) - goto fail; - - return 0; - -fail: - return sd_bus_error_set_errno(error, r); -} - -_public_ int sd_bus_get_property_string( - sd_bus *bus, - const char *destination, - const char *path, - const char *interface, - const char *member, - sd_bus_error *error, - char **ret) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - const char *s; - char *n; - int r; - - bus_assert_return(bus, -EINVAL, error); - bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error); - bus_assert_return(member_name_is_valid(member), -EINVAL, error); - bus_assert_return(ret, -EINVAL, error); - bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); - - if (!BUS_IS_OPEN(bus->state)) { - r = -ENOTCONN; - goto fail; - } - - r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member); - if (r < 0) - return r; - - r = sd_bus_message_enter_container(reply, 'v', "s"); - if (r < 0) - goto fail; - - r = sd_bus_message_read_basic(reply, 's', &s); - if (r < 0) - goto fail; - - n = strdup(s); - if (!n) { - r = -ENOMEM; - goto fail; - } - - *ret = n; - return 0; - -fail: - return sd_bus_error_set_errno(error, r); -} - -_public_ int sd_bus_get_property_strv( - sd_bus *bus, - const char *destination, - const char *path, - const char *interface, - const char *member, - sd_bus_error *error, - char ***ret) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - int r; - - bus_assert_return(bus, -EINVAL, error); - bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error); - bus_assert_return(member_name_is_valid(member), -EINVAL, error); - bus_assert_return(ret, -EINVAL, error); - bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); - - if (!BUS_IS_OPEN(bus->state)) { - r = -ENOTCONN; - goto fail; - } - - r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member); - if (r < 0) - return r; - - r = sd_bus_message_enter_container(reply, 'v', NULL); - if (r < 0) - goto fail; - - r = sd_bus_message_read_strv(reply, ret); - if (r < 0) - goto fail; - - return 0; - -fail: - return sd_bus_error_set_errno(error, r); -} - -_public_ int sd_bus_set_property( - sd_bus *bus, - const char *destination, - const char *path, - const char *interface, - const char *member, - sd_bus_error *error, - const char *type, ...) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - va_list ap; - int r; - - bus_assert_return(bus, -EINVAL, error); - bus_assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL, error); - bus_assert_return(member_name_is_valid(member), -EINVAL, error); - bus_assert_return(signature_is_single(type, false), -EINVAL, error); - bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); - - if (!BUS_IS_OPEN(bus->state)) { - r = -ENOTCONN; - goto fail; - } - - r = sd_bus_message_new_method_call(bus, &m, destination, path, "org.freedesktop.DBus.Properties", "Set"); - if (r < 0) - goto fail; - - r = sd_bus_message_append(m, "ss", strempty(interface), member); - if (r < 0) - goto fail; - - r = sd_bus_message_open_container(m, 'v', type); - if (r < 0) - goto fail; - - va_start(ap, type); - r = bus_message_append_ap(m, type, ap); - va_end(ap); - if (r < 0) - goto fail; - - r = sd_bus_message_close_container(m); - if (r < 0) - goto fail; - - return sd_bus_call(bus, m, 0, error, NULL); - -fail: - return sd_bus_error_set_errno(error, r); -} - -_public_ int sd_bus_query_sender_creds(sd_bus_message *call, uint64_t mask, sd_bus_creds **creds) { - sd_bus_creds *c; - - assert_return(call, -EINVAL); - assert_return(call->sealed, -EPERM); - assert_return(call->bus, -EINVAL); - assert_return(!bus_pid_changed(call->bus), -ECHILD); - - if (!BUS_IS_OPEN(call->bus->state)) - return -ENOTCONN; - - c = sd_bus_message_get_creds(call); - - /* All data we need? */ - if (c && (mask & ~c->mask) == 0) { - *creds = sd_bus_creds_ref(c); - return 0; - } - - /* No data passed? Or not enough data passed to retrieve the missing bits? */ - if (!c || !(c->mask & SD_BUS_CREDS_PID)) { - /* We couldn't read anything from the call, let's try - * to get it from the sender or peer. */ - - if (call->sender) - /* There's a sender, but the creds are - * missing. This means we are talking via - * dbus1, or are getting a message that was - * sent to us via kdbus, but was converted - * from a dbus1 message by the bus-proxy and - * thus also lacks the creds. */ - return sd_bus_get_name_creds(call->bus, call->sender, mask, creds); - else - /* There's no sender, hence we are on a dbus1 - * direct connection. For direct connections - * the credentials of the AF_UNIX peer matter, - * which may be queried via - * sd_bus_get_owner_creds(). */ - return sd_bus_get_owner_creds(call->bus, mask, creds); - } - - return bus_creds_extend_by_pid(c, mask, creds); -} - -_public_ int sd_bus_query_sender_privilege(sd_bus_message *call, int capability) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - uid_t our_uid; - bool know_caps = false; - int r; - - assert_return(call, -EINVAL); - assert_return(call->sealed, -EPERM); - assert_return(call->bus, -EINVAL); - assert_return(!bus_pid_changed(call->bus), -ECHILD); - - if (!BUS_IS_OPEN(call->bus->state)) - return -ENOTCONN; - - if (capability >= 0) { - - r = sd_bus_query_sender_creds(call, SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS, &creds); - if (r < 0) - return r; - - /* We cannot use augmented caps for authorization, - * since then data is acquired raceful from - * /proc. This can never actually happen, but let's - * better be safe than sorry, and do an extra check - * here. */ - assert_return((sd_bus_creds_get_augmented_mask(creds) & SD_BUS_CREDS_EFFECTIVE_CAPS) == 0, -EPERM); - - /* Note that not even on kdbus we might have the caps - * field, due to faked identities, or namespace - * translation issues. */ - r = sd_bus_creds_has_effective_cap(creds, capability); - if (r > 0) - return 1; - if (r == 0) - know_caps = true; - } else { - r = sd_bus_query_sender_creds(call, SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID, &creds); - if (r < 0) - return r; - } - - /* Now, check the UID, but only if the capability check wasn't - * sufficient */ - our_uid = getuid(); - if (our_uid != 0 || !know_caps || capability < 0) { - uid_t sender_uid; - - /* We cannot use augmented uid/euid for authorization, - * since then data is acquired raceful from - * /proc. This can never actually happen, but let's - * better be safe than sorry, and do an extra check - * here. */ - assert_return((sd_bus_creds_get_augmented_mask(creds) & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID)) == 0, -EPERM); - - /* Try to use the EUID, if we have it. */ - r = sd_bus_creds_get_euid(creds, &sender_uid); - if (r < 0) - r = sd_bus_creds_get_uid(creds, &sender_uid); - - if (r >= 0) { - /* Sender has same UID as us, then let's grant access */ - if (sender_uid == our_uid) - return 1; - - /* Sender is root, we are not root. */ - if (our_uid != 0 && sender_uid == 0) - return 1; - } - } - - return 0; -} diff --git a/src/libsystemd/sd-bus/bus-creds.c b/src/libsystemd/sd-bus/bus-creds.c deleted file mode 100644 index c4f693dee9..0000000000 --- a/src/libsystemd/sd-bus/bus-creds.c +++ /dev/null @@ -1,1349 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <linux/capability.h> -#include <stdlib.h> - -#include "alloc-util.h" -#include "audit-util.h" -#include "bus-creds.h" -#include "bus-label.h" -#include "bus-message.h" -#include "bus-util.h" -#include "capability-util.h" -#include "cgroup-util.h" -#include "fd-util.h" -#include "fileio.h" -#include "formats-util.h" -#include "hexdecoct.h" -#include "parse-util.h" -#include "process-util.h" -#include "string-util.h" -#include "strv.h" -#include "terminal-util.h" -#include "user-util.h" -#include "util.h" - -enum { - CAP_OFFSET_INHERITABLE = 0, - CAP_OFFSET_PERMITTED = 1, - CAP_OFFSET_EFFECTIVE = 2, - CAP_OFFSET_BOUNDING = 3 -}; - -void bus_creds_done(sd_bus_creds *c) { - assert(c); - - /* For internal bus cred structures that are allocated by - * something else */ - - free(c->session); - free(c->unit); - free(c->user_unit); - free(c->slice); - free(c->user_slice); - free(c->unescaped_description); - free(c->supplementary_gids); - free(c->tty); - - free(c->well_known_names); /* note that this is an strv, but - * we only free the array, not the - * strings the array points to. The - * full strv we only free if - * c->allocated is set, see - * below. */ - - strv_free(c->cmdline_array); -} - -_public_ sd_bus_creds *sd_bus_creds_ref(sd_bus_creds *c) { - - if (!c) - return NULL; - - if (c->allocated) { - assert(c->n_ref > 0); - c->n_ref++; - } else { - sd_bus_message *m; - - /* If this is an embedded creds structure, then - * forward ref counting to the message */ - m = container_of(c, sd_bus_message, creds); - sd_bus_message_ref(m); - } - - return c; -} - -_public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) { - - if (!c) - return NULL; - - if (c->allocated) { - assert(c->n_ref > 0); - c->n_ref--; - - if (c->n_ref == 0) { - free(c->comm); - free(c->tid_comm); - free(c->exe); - free(c->cmdline); - free(c->cgroup); - free(c->capability); - free(c->label); - free(c->unique_name); - free(c->cgroup_root); - free(c->description); - - c->supplementary_gids = mfree(c->supplementary_gids); - - c->well_known_names = strv_free(c->well_known_names); - - bus_creds_done(c); - - free(c); - } - } else { - sd_bus_message *m; - - m = container_of(c, sd_bus_message, creds); - sd_bus_message_unref(m); - } - - - return NULL; -} - -_public_ uint64_t sd_bus_creds_get_mask(const sd_bus_creds *c) { - assert_return(c, 0); - - return c->mask; -} - -_public_ uint64_t sd_bus_creds_get_augmented_mask(const sd_bus_creds *c) { - assert_return(c, 0); - - return c->augmented; -} - -sd_bus_creds* bus_creds_new(void) { - sd_bus_creds *c; - - c = new0(sd_bus_creds, 1); - if (!c) - return NULL; - - c->allocated = true; - c->n_ref = 1; - return c; -} - -_public_ int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, uint64_t mask) { - sd_bus_creds *c; - int r; - - assert_return(pid >= 0, -EINVAL); - assert_return(mask <= _SD_BUS_CREDS_ALL, -EOPNOTSUPP); - assert_return(ret, -EINVAL); - - if (pid == 0) - pid = getpid(); - - c = bus_creds_new(); - if (!c) - return -ENOMEM; - - r = bus_creds_add_more(c, mask | SD_BUS_CREDS_AUGMENT, pid, 0); - if (r < 0) { - sd_bus_creds_unref(c); - return r; - } - - /* Check if the process existed at all, in case we haven't - * figured that out already */ - if (!pid_is_alive(pid)) { - sd_bus_creds_unref(c); - return -ESRCH; - } - - *ret = c; - return 0; -} - -_public_ int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *uid) { - assert_return(c, -EINVAL); - assert_return(uid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_UID)) - return -ENODATA; - - *uid = c->uid; - return 0; -} - -_public_ int sd_bus_creds_get_euid(sd_bus_creds *c, uid_t *euid) { - assert_return(c, -EINVAL); - assert_return(euid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_EUID)) - return -ENODATA; - - *euid = c->euid; - return 0; -} - -_public_ int sd_bus_creds_get_suid(sd_bus_creds *c, uid_t *suid) { - assert_return(c, -EINVAL); - assert_return(suid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_SUID)) - return -ENODATA; - - *suid = c->suid; - return 0; -} - - -_public_ int sd_bus_creds_get_fsuid(sd_bus_creds *c, uid_t *fsuid) { - assert_return(c, -EINVAL); - assert_return(fsuid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_FSUID)) - return -ENODATA; - - *fsuid = c->fsuid; - return 0; -} - -_public_ int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *gid) { - assert_return(c, -EINVAL); - assert_return(gid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_GID)) - return -ENODATA; - - *gid = c->gid; - return 0; -} - -_public_ int sd_bus_creds_get_egid(sd_bus_creds *c, gid_t *egid) { - assert_return(c, -EINVAL); - assert_return(egid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_EGID)) - return -ENODATA; - - *egid = c->egid; - return 0; -} - -_public_ int sd_bus_creds_get_sgid(sd_bus_creds *c, gid_t *sgid) { - assert_return(c, -EINVAL); - assert_return(sgid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_SGID)) - return -ENODATA; - - *sgid = c->sgid; - return 0; -} - -_public_ int sd_bus_creds_get_fsgid(sd_bus_creds *c, gid_t *fsgid) { - assert_return(c, -EINVAL); - assert_return(fsgid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_FSGID)) - return -ENODATA; - - *fsgid = c->fsgid; - return 0; -} - -_public_ int sd_bus_creds_get_supplementary_gids(sd_bus_creds *c, const gid_t **gids) { - assert_return(c, -EINVAL); - assert_return(gids, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS)) - return -ENODATA; - - *gids = c->supplementary_gids; - return (int) c->n_supplementary_gids; -} - -_public_ int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid) { - assert_return(c, -EINVAL); - assert_return(pid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_PID)) - return -ENODATA; - - assert(c->pid > 0); - *pid = c->pid; - return 0; -} - -_public_ int sd_bus_creds_get_ppid(sd_bus_creds *c, pid_t *ppid) { - assert_return(c, -EINVAL); - assert_return(ppid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_PPID)) - return -ENODATA; - - /* PID 1 has no parent process. Let's distinguish the case of - * not knowing and not having a parent process by the returned - * error code. */ - if (c->ppid == 0) - return -ENXIO; - - *ppid = c->ppid; - return 0; -} - -_public_ int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *tid) { - assert_return(c, -EINVAL); - assert_return(tid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_TID)) - return -ENODATA; - - assert(c->tid > 0); - *tid = c->tid; - return 0; -} - -_public_ int sd_bus_creds_get_selinux_context(sd_bus_creds *c, const char **ret) { - assert_return(c, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_SELINUX_CONTEXT)) - return -ENODATA; - - assert(c->label); - *ret = c->label; - return 0; -} - -_public_ int sd_bus_creds_get_comm(sd_bus_creds *c, const char **ret) { - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_COMM)) - return -ENODATA; - - assert(c->comm); - *ret = c->comm; - return 0; -} - -_public_ int sd_bus_creds_get_tid_comm(sd_bus_creds *c, const char **ret) { - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_TID_COMM)) - return -ENODATA; - - assert(c->tid_comm); - *ret = c->tid_comm; - return 0; -} - -_public_ int sd_bus_creds_get_exe(sd_bus_creds *c, const char **ret) { - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_EXE)) - return -ENODATA; - - if (!c->exe) - return -ENXIO; - - *ret = c->exe; - return 0; -} - -_public_ int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **ret) { - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_CGROUP)) - return -ENODATA; - - assert(c->cgroup); - *ret = c->cgroup; - return 0; -} - -_public_ int sd_bus_creds_get_unit(sd_bus_creds *c, const char **ret) { - int r; - - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_UNIT)) - return -ENODATA; - - assert(c->cgroup); - - if (!c->unit) { - const char *shifted; - - r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); - if (r < 0) - return r; - - r = cg_path_get_unit(shifted, (char**) &c->unit); - if (r < 0) - return r; - } - - *ret = c->unit; - return 0; -} - -_public_ int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **ret) { - int r; - - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_USER_UNIT)) - return -ENODATA; - - assert(c->cgroup); - - if (!c->user_unit) { - const char *shifted; - - r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); - if (r < 0) - return r; - - r = cg_path_get_user_unit(shifted, (char**) &c->user_unit); - if (r < 0) - return r; - } - - *ret = c->user_unit; - return 0; -} - -_public_ int sd_bus_creds_get_slice(sd_bus_creds *c, const char **ret) { - int r; - - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_SLICE)) - return -ENODATA; - - assert(c->cgroup); - - if (!c->slice) { - const char *shifted; - - r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); - if (r < 0) - return r; - - r = cg_path_get_slice(shifted, (char**) &c->slice); - if (r < 0) - return r; - } - - *ret = c->slice; - return 0; -} - -_public_ int sd_bus_creds_get_user_slice(sd_bus_creds *c, const char **ret) { - int r; - - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_USER_SLICE)) - return -ENODATA; - - assert(c->cgroup); - - if (!c->user_slice) { - const char *shifted; - - r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); - if (r < 0) - return r; - - r = cg_path_get_user_slice(shifted, (char**) &c->user_slice); - if (r < 0) - return r; - } - - *ret = c->user_slice; - return 0; -} - -_public_ int sd_bus_creds_get_session(sd_bus_creds *c, const char **ret) { - int r; - - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_SESSION)) - return -ENODATA; - - assert(c->cgroup); - - if (!c->session) { - const char *shifted; - - r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); - if (r < 0) - return r; - - r = cg_path_get_session(shifted, (char**) &c->session); - if (r < 0) - return r; - } - - *ret = c->session; - return 0; -} - -_public_ int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *uid) { - const char *shifted; - int r; - - assert_return(c, -EINVAL); - assert_return(uid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_OWNER_UID)) - return -ENODATA; - - assert(c->cgroup); - - r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); - if (r < 0) - return r; - - return cg_path_get_owner_uid(shifted, uid); -} - -_public_ int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***cmdline) { - assert_return(c, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_CMDLINE)) - return -ENODATA; - - if (!c->cmdline) - return -ENXIO; - - if (!c->cmdline_array) { - c->cmdline_array = strv_parse_nulstr(c->cmdline, c->cmdline_size); - if (!c->cmdline_array) - return -ENOMEM; - } - - *cmdline = c->cmdline_array; - return 0; -} - -_public_ int sd_bus_creds_get_audit_session_id(sd_bus_creds *c, uint32_t *sessionid) { - assert_return(c, -EINVAL); - assert_return(sessionid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_AUDIT_SESSION_ID)) - return -ENODATA; - - if (c->audit_session_id == AUDIT_SESSION_INVALID) - return -ENXIO; - - *sessionid = c->audit_session_id; - return 0; -} - -_public_ int sd_bus_creds_get_audit_login_uid(sd_bus_creds *c, uid_t *uid) { - assert_return(c, -EINVAL); - assert_return(uid, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_AUDIT_LOGIN_UID)) - return -ENODATA; - - if (c->audit_login_uid == UID_INVALID) - return -ENXIO; - - *uid = c->audit_login_uid; - return 0; -} - -_public_ int sd_bus_creds_get_tty(sd_bus_creds *c, const char **ret) { - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_TTY)) - return -ENODATA; - - if (!c->tty) - return -ENXIO; - - *ret = c->tty; - return 0; -} - -_public_ int sd_bus_creds_get_unique_name(sd_bus_creds *c, const char **unique_name) { - assert_return(c, -EINVAL); - assert_return(unique_name, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_UNIQUE_NAME)) - return -ENODATA; - - *unique_name = c->unique_name; - return 0; -} - -_public_ int sd_bus_creds_get_well_known_names(sd_bus_creds *c, char ***well_known_names) { - assert_return(c, -EINVAL); - assert_return(well_known_names, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_WELL_KNOWN_NAMES)) - return -ENODATA; - - /* As a special hack we return the bus driver as well-known - * names list when this is requested. */ - if (c->well_known_names_driver) { - static const char* const wkn[] = { - "org.freedesktop.DBus", - NULL - }; - - *well_known_names = (char**) wkn; - return 0; - } - - if (c->well_known_names_local) { - static const char* const wkn[] = { - "org.freedesktop.DBus.Local", - NULL - }; - - *well_known_names = (char**) wkn; - return 0; - } - - *well_known_names = c->well_known_names; - return 0; -} - -_public_ int sd_bus_creds_get_description(sd_bus_creds *c, const char **ret) { - assert_return(c, -EINVAL); - assert_return(ret, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_DESCRIPTION)) - return -ENODATA; - - assert(c->description); - - if (!c->unescaped_description) { - c->unescaped_description = bus_label_unescape(c->description); - if (!c->unescaped_description) - return -ENOMEM; - } - - *ret = c->unescaped_description; - return 0; -} - -static int has_cap(sd_bus_creds *c, unsigned offset, int capability) { - size_t sz; - - assert(c); - assert(capability >= 0); - assert(c->capability); - - if ((unsigned) capability > cap_last_cap()) - return 0; - - sz = DIV_ROUND_UP(cap_last_cap(), 32U); - - return !!(c->capability[offset * sz + CAP_TO_INDEX(capability)] & CAP_TO_MASK(capability)); -} - -_public_ int sd_bus_creds_has_effective_cap(sd_bus_creds *c, int capability) { - assert_return(c, -EINVAL); - assert_return(capability >= 0, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_EFFECTIVE_CAPS)) - return -ENODATA; - - return has_cap(c, CAP_OFFSET_EFFECTIVE, capability); -} - -_public_ int sd_bus_creds_has_permitted_cap(sd_bus_creds *c, int capability) { - assert_return(c, -EINVAL); - assert_return(capability >= 0, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_PERMITTED_CAPS)) - return -ENODATA; - - return has_cap(c, CAP_OFFSET_PERMITTED, capability); -} - -_public_ int sd_bus_creds_has_inheritable_cap(sd_bus_creds *c, int capability) { - assert_return(c, -EINVAL); - assert_return(capability >= 0, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_INHERITABLE_CAPS)) - return -ENODATA; - - return has_cap(c, CAP_OFFSET_INHERITABLE, capability); -} - -_public_ int sd_bus_creds_has_bounding_cap(sd_bus_creds *c, int capability) { - assert_return(c, -EINVAL); - assert_return(capability >= 0, -EINVAL); - - if (!(c->mask & SD_BUS_CREDS_BOUNDING_CAPS)) - return -ENODATA; - - return has_cap(c, CAP_OFFSET_BOUNDING, capability); -} - -static int parse_caps(sd_bus_creds *c, unsigned offset, const char *p) { - size_t sz, max; - unsigned i, j; - - assert(c); - assert(p); - - max = DIV_ROUND_UP(cap_last_cap(), 32U); - p += strspn(p, WHITESPACE); - - sz = strlen(p); - if (sz % 8 != 0) - return -EINVAL; - - sz /= 8; - if (sz > max) - return -EINVAL; - - if (!c->capability) { - c->capability = new0(uint32_t, max * 4); - if (!c->capability) - return -ENOMEM; - } - - for (i = 0; i < sz; i ++) { - uint32_t v = 0; - - for (j = 0; j < 8; ++j) { - int t; - - t = unhexchar(*p++); - if (t < 0) - return -EINVAL; - - v = (v << 4) | t; - } - - c->capability[offset * max + (sz - i - 1)] = v; - } - - return 0; -} - -int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) { - uint64_t missing; - int r; - - assert(c); - assert(c->allocated); - - if (!(mask & SD_BUS_CREDS_AUGMENT)) - return 0; - - /* Try to retrieve PID from creds if it wasn't passed to us */ - if (pid > 0) { - c->pid = pid; - c->mask |= SD_BUS_CREDS_PID; - } else if (c->mask & SD_BUS_CREDS_PID) - pid = c->pid; - else - /* Without pid we cannot do much... */ - return 0; - - /* Try to retrieve TID from creds if it wasn't passed to us */ - if (tid <= 0 && (c->mask & SD_BUS_CREDS_TID)) - tid = c->tid; - - /* Calculate what we shall and can add */ - missing = mask & ~(c->mask|SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_DESCRIPTION|SD_BUS_CREDS_AUGMENT); - if (missing == 0) - return 0; - - if (tid > 0) { - c->tid = tid; - c->mask |= SD_BUS_CREDS_TID; - } - - if (missing & (SD_BUS_CREDS_PPID | - SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_SUID | SD_BUS_CREDS_FSUID | - SD_BUS_CREDS_GID | SD_BUS_CREDS_EGID | SD_BUS_CREDS_SGID | SD_BUS_CREDS_FSGID | - SD_BUS_CREDS_SUPPLEMENTARY_GIDS | - SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_INHERITABLE_CAPS | - SD_BUS_CREDS_PERMITTED_CAPS | SD_BUS_CREDS_BOUNDING_CAPS)) { - - _cleanup_fclose_ FILE *f = NULL; - const char *p; - - p = procfs_file_alloca(pid, "status"); - - f = fopen(p, "re"); - if (!f) { - if (errno == ENOENT) - return -ESRCH; - else if (errno != EPERM && errno != EACCES) - return -errno; - } else { - char line[LINE_MAX]; - - FOREACH_LINE(line, f, return -errno) { - truncate_nl(line); - - if (missing & SD_BUS_CREDS_PPID) { - p = startswith(line, "PPid:"); - if (p) { - p += strspn(p, WHITESPACE); - - /* Explicitly check for PPID 0 (which is the case for PID 1) */ - if (!streq(p, "0")) { - r = parse_pid(p, &c->ppid); - if (r < 0) - return r; - - } else - c->ppid = 0; - - c->mask |= SD_BUS_CREDS_PPID; - continue; - } - } - - if (missing & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID)) { - p = startswith(line, "Uid:"); - if (p) { - unsigned long uid, euid, suid, fsuid; - - p += strspn(p, WHITESPACE); - if (sscanf(p, "%lu %lu %lu %lu", &uid, &euid, &suid, &fsuid) != 4) - return -EIO; - - if (missing & SD_BUS_CREDS_UID) - c->uid = (uid_t) uid; - if (missing & SD_BUS_CREDS_EUID) - c->euid = (uid_t) euid; - if (missing & SD_BUS_CREDS_SUID) - c->suid = (uid_t) suid; - if (missing & SD_BUS_CREDS_FSUID) - c->fsuid = (uid_t) fsuid; - - c->mask |= missing & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID); - continue; - } - } - - if (missing & (SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID)) { - p = startswith(line, "Gid:"); - if (p) { - unsigned long gid, egid, sgid, fsgid; - - p += strspn(p, WHITESPACE); - if (sscanf(p, "%lu %lu %lu %lu", &gid, &egid, &sgid, &fsgid) != 4) - return -EIO; - - if (missing & SD_BUS_CREDS_GID) - c->gid = (gid_t) gid; - if (missing & SD_BUS_CREDS_EGID) - c->egid = (gid_t) egid; - if (missing & SD_BUS_CREDS_SGID) - c->sgid = (gid_t) sgid; - if (missing & SD_BUS_CREDS_FSGID) - c->fsgid = (gid_t) fsgid; - - c->mask |= missing & (SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID); - continue; - } - } - - if (missing & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) { - p = startswith(line, "Groups:"); - if (p) { - size_t allocated = 0; - - for (;;) { - unsigned long g; - int n = 0; - - p += strspn(p, WHITESPACE); - if (*p == 0) - break; - - if (sscanf(p, "%lu%n", &g, &n) != 1) - return -EIO; - - if (!GREEDY_REALLOC(c->supplementary_gids, allocated, c->n_supplementary_gids+1)) - return -ENOMEM; - - c->supplementary_gids[c->n_supplementary_gids++] = (gid_t) g; - p += n; - } - - c->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS; - continue; - } - } - - if (missing & SD_BUS_CREDS_EFFECTIVE_CAPS) { - p = startswith(line, "CapEff:"); - if (p) { - r = parse_caps(c, CAP_OFFSET_EFFECTIVE, p); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_EFFECTIVE_CAPS; - continue; - } - } - - if (missing & SD_BUS_CREDS_PERMITTED_CAPS) { - p = startswith(line, "CapPrm:"); - if (p) { - r = parse_caps(c, CAP_OFFSET_PERMITTED, p); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_PERMITTED_CAPS; - continue; - } - } - - if (missing & SD_BUS_CREDS_INHERITABLE_CAPS) { - p = startswith(line, "CapInh:"); - if (p) { - r = parse_caps(c, CAP_OFFSET_INHERITABLE, p); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_INHERITABLE_CAPS; - continue; - } - } - - if (missing & SD_BUS_CREDS_BOUNDING_CAPS) { - p = startswith(line, "CapBnd:"); - if (p) { - r = parse_caps(c, CAP_OFFSET_BOUNDING, p); - if (r < 0) - return r; - - c->mask |= SD_BUS_CREDS_BOUNDING_CAPS; - continue; - } - } - } - } - } - - if (missing & SD_BUS_CREDS_SELINUX_CONTEXT) { - const char *p; - - p = procfs_file_alloca(pid, "attr/current"); - r = read_one_line_file(p, &c->label); - if (r < 0) { - if (r != -ENOENT && r != -EINVAL && r != -EPERM && r != -EACCES) - return r; - } else - c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT; - } - - if (missing & SD_BUS_CREDS_COMM) { - r = get_process_comm(pid, &c->comm); - if (r < 0) { - if (r != -EPERM && r != -EACCES) - return r; - } else - c->mask |= SD_BUS_CREDS_COMM; - } - - if (missing & SD_BUS_CREDS_EXE) { - r = get_process_exe(pid, &c->exe); - if (r == -ESRCH) { - /* Unfortunately we cannot really distinguish - * the case here where the process does not - * exist, and /proc/$PID/exe being unreadable - * because $PID is a kernel thread. Hence, - * assume it is a kernel thread, and rely on - * that this case is caught with a later - * call. */ - c->exe = NULL; - c->mask |= SD_BUS_CREDS_EXE; - } else if (r < 0) { - if (r != -EPERM && r != -EACCES) - return r; - } else - c->mask |= SD_BUS_CREDS_EXE; - } - - if (missing & SD_BUS_CREDS_CMDLINE) { - const char *p; - - p = procfs_file_alloca(pid, "cmdline"); - r = read_full_file(p, &c->cmdline, &c->cmdline_size); - if (r == -ENOENT) - return -ESRCH; - if (r < 0) { - if (r != -EPERM && r != -EACCES) - return r; - } else { - if (c->cmdline_size == 0) - c->cmdline = mfree(c->cmdline); - - c->mask |= SD_BUS_CREDS_CMDLINE; - } - } - - if (tid > 0 && (missing & SD_BUS_CREDS_TID_COMM)) { - _cleanup_free_ char *p = NULL; - - if (asprintf(&p, "/proc/"PID_FMT"/task/"PID_FMT"/comm", pid, tid) < 0) - return -ENOMEM; - - r = read_one_line_file(p, &c->tid_comm); - if (r == -ENOENT) - return -ESRCH; - if (r < 0) { - if (r != -EPERM && r != -EACCES) - return r; - } else - c->mask |= SD_BUS_CREDS_TID_COMM; - } - - if (missing & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID)) { - - if (!c->cgroup) { - r = cg_pid_get_path(NULL, pid, &c->cgroup); - if (r < 0) { - if (r != -EPERM && r != -EACCES) - return r; - } - } - - if (!c->cgroup_root) { - r = cg_get_root_path(&c->cgroup_root); - if (r < 0) - return r; - } - - if (c->cgroup) - c->mask |= missing & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID); - } - - if (missing & SD_BUS_CREDS_AUDIT_SESSION_ID) { - r = audit_session_from_pid(pid, &c->audit_session_id); - if (r == -ENODATA) { - /* ENODATA means: no audit session id assigned */ - c->audit_session_id = AUDIT_SESSION_INVALID; - c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; - } else if (r < 0) { - if (r != -EOPNOTSUPP && r != -ENOENT && r != -EPERM && r != -EACCES) - return r; - } else - c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; - } - - if (missing & SD_BUS_CREDS_AUDIT_LOGIN_UID) { - r = audit_loginuid_from_pid(pid, &c->audit_login_uid); - if (r == -ENODATA) { - /* ENODATA means: no audit login uid assigned */ - c->audit_login_uid = UID_INVALID; - c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; - } else if (r < 0) { - if (r != -EOPNOTSUPP && r != -ENOENT && r != -EPERM && r != -EACCES) - return r; - } else - c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; - } - - if (missing & SD_BUS_CREDS_TTY) { - r = get_ctty(pid, NULL, &c->tty); - if (r == -ENXIO) { - /* ENXIO means: process has no controlling TTY */ - c->tty = NULL; - c->mask |= SD_BUS_CREDS_TTY; - } else if (r < 0) { - if (r != -EPERM && r != -EACCES && r != -ENOENT) - return r; - } else - c->mask |= SD_BUS_CREDS_TTY; - } - - /* In case only the exe path was to be read we cannot - * distinguish the case where the exe path was unreadable - * because the process was a kernel thread, or when the - * process didn't exist at all. Hence, let's do a final check, - * to be sure. */ - if (!pid_is_alive(pid)) - return -ESRCH; - - if (tid > 0 && tid != pid && !pid_is_unwaited(tid)) - return -ESRCH; - - c->augmented = missing & c->mask; - - return 0; -} - -int bus_creds_extend_by_pid(sd_bus_creds *c, uint64_t mask, sd_bus_creds **ret) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *n = NULL; - int r; - - assert(c); - assert(ret); - - if ((mask & ~c->mask) == 0 || (!(mask & SD_BUS_CREDS_AUGMENT))) { - /* There's already all data we need, or augmentation - * wasn't turned on. */ - - *ret = sd_bus_creds_ref(c); - return 0; - } - - n = bus_creds_new(); - if (!n) - return -ENOMEM; - - /* Copy the original data over */ - - if (c->mask & mask & SD_BUS_CREDS_PID) { - n->pid = c->pid; - n->mask |= SD_BUS_CREDS_PID; - } - - if (c->mask & mask & SD_BUS_CREDS_TID) { - n->tid = c->tid; - n->mask |= SD_BUS_CREDS_TID; - } - - if (c->mask & mask & SD_BUS_CREDS_PPID) { - n->ppid = c->ppid; - n->mask |= SD_BUS_CREDS_PPID; - } - - if (c->mask & mask & SD_BUS_CREDS_UID) { - n->uid = c->uid; - n->mask |= SD_BUS_CREDS_UID; - } - - if (c->mask & mask & SD_BUS_CREDS_EUID) { - n->euid = c->euid; - n->mask |= SD_BUS_CREDS_EUID; - } - - if (c->mask & mask & SD_BUS_CREDS_SUID) { - n->suid = c->suid; - n->mask |= SD_BUS_CREDS_SUID; - } - - if (c->mask & mask & SD_BUS_CREDS_FSUID) { - n->fsuid = c->fsuid; - n->mask |= SD_BUS_CREDS_FSUID; - } - - if (c->mask & mask & SD_BUS_CREDS_GID) { - n->gid = c->gid; - n->mask |= SD_BUS_CREDS_GID; - } - - if (c->mask & mask & SD_BUS_CREDS_EGID) { - n->egid = c->egid; - n->mask |= SD_BUS_CREDS_EGID; - } - - if (c->mask & mask & SD_BUS_CREDS_SGID) { - n->sgid = c->sgid; - n->mask |= SD_BUS_CREDS_SGID; - } - - if (c->mask & mask & SD_BUS_CREDS_FSGID) { - n->fsgid = c->fsgid; - n->mask |= SD_BUS_CREDS_FSGID; - } - - if (c->mask & mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) { - if (c->supplementary_gids) { - n->supplementary_gids = newdup(gid_t, c->supplementary_gids, c->n_supplementary_gids); - if (!n->supplementary_gids) - return -ENOMEM; - n->n_supplementary_gids = c->n_supplementary_gids; - } else { - n->supplementary_gids = NULL; - n->n_supplementary_gids = 0; - } - - n->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS; - } - - if (c->mask & mask & SD_BUS_CREDS_COMM) { - assert(c->comm); - - n->comm = strdup(c->comm); - if (!n->comm) - return -ENOMEM; - - n->mask |= SD_BUS_CREDS_COMM; - } - - if (c->mask & mask & SD_BUS_CREDS_TID_COMM) { - assert(c->tid_comm); - - n->tid_comm = strdup(c->tid_comm); - if (!n->tid_comm) - return -ENOMEM; - - n->mask |= SD_BUS_CREDS_TID_COMM; - } - - if (c->mask & mask & SD_BUS_CREDS_EXE) { - if (c->exe) { - n->exe = strdup(c->exe); - if (!n->exe) - return -ENOMEM; - } else - n->exe = NULL; - - n->mask |= SD_BUS_CREDS_EXE; - } - - if (c->mask & mask & SD_BUS_CREDS_CMDLINE) { - if (c->cmdline) { - n->cmdline = memdup(c->cmdline, c->cmdline_size); - if (!n->cmdline) - return -ENOMEM; - - n->cmdline_size = c->cmdline_size; - } else { - n->cmdline = NULL; - n->cmdline_size = 0; - } - - n->mask |= SD_BUS_CREDS_CMDLINE; - } - - if (c->mask & mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_OWNER_UID)) { - assert(c->cgroup); - - n->cgroup = strdup(c->cgroup); - if (!n->cgroup) - return -ENOMEM; - - n->cgroup_root = strdup(c->cgroup_root); - if (!n->cgroup_root) - return -ENOMEM; - - n->mask |= mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_OWNER_UID); - } - - if (c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS)) { - assert(c->capability); - - n->capability = memdup(c->capability, DIV_ROUND_UP(cap_last_cap(), 32U) * 4 * 4); - if (!n->capability) - return -ENOMEM; - - n->mask |= c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS); - } - - if (c->mask & mask & SD_BUS_CREDS_SELINUX_CONTEXT) { - assert(c->label); - - n->label = strdup(c->label); - if (!n->label) - return -ENOMEM; - n->mask |= SD_BUS_CREDS_SELINUX_CONTEXT; - } - - if (c->mask & mask & SD_BUS_CREDS_AUDIT_SESSION_ID) { - n->audit_session_id = c->audit_session_id; - n->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; - } - if (c->mask & mask & SD_BUS_CREDS_AUDIT_LOGIN_UID) { - n->audit_login_uid = c->audit_login_uid; - n->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; - } - - if (c->mask & mask & SD_BUS_CREDS_TTY) { - if (c->tty) { - n->tty = strdup(c->tty); - if (!n->tty) - return -ENOMEM; - } else - n->tty = NULL; - n->mask |= SD_BUS_CREDS_TTY; - } - - if (c->mask & mask & SD_BUS_CREDS_UNIQUE_NAME) { - assert(c->unique_name); - - n->unique_name = strdup(c->unique_name); - if (!n->unique_name) - return -ENOMEM; - n->mask |= SD_BUS_CREDS_UNIQUE_NAME; - } - - if (c->mask & mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) { - if (strv_isempty(c->well_known_names)) - n->well_known_names = NULL; - else { - n->well_known_names = strv_copy(c->well_known_names); - if (!n->well_known_names) - return -ENOMEM; - } - n->well_known_names_driver = c->well_known_names_driver; - n->well_known_names_local = c->well_known_names_local; - n->mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES; - } - - if (c->mask & mask & SD_BUS_CREDS_DESCRIPTION) { - assert(c->description); - n->description = strdup(c->description); - if (!n->description) - return -ENOMEM; - n->mask |= SD_BUS_CREDS_DESCRIPTION; - } - - n->augmented = c->augmented & n->mask; - - /* Get more data */ - - r = bus_creds_add_more(n, mask, 0, 0); - if (r < 0) - return r; - - *ret = n; - n = NULL; - return 0; -} diff --git a/src/libsystemd/sd-bus/bus-creds.h b/src/libsystemd/sd-bus/bus-creds.h deleted file mode 100644 index df8a1f1005..0000000000 --- a/src/libsystemd/sd-bus/bus-creds.h +++ /dev/null @@ -1,90 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> - -#include "sd-bus.h" - -struct sd_bus_creds { - bool allocated; - unsigned n_ref; - - uint64_t mask; - uint64_t augmented; - - uid_t uid; - uid_t euid; - uid_t suid; - uid_t fsuid; - gid_t gid; - gid_t egid; - gid_t sgid; - gid_t fsgid; - - gid_t *supplementary_gids; - unsigned n_supplementary_gids; - - pid_t ppid; - pid_t pid; - pid_t tid; - - char *comm; - char *tid_comm; - char *exe; - - char *cmdline; - size_t cmdline_size; - char **cmdline_array; - - char *cgroup; - char *session; - char *unit; - char *user_unit; - char *slice; - char *user_slice; - - char *tty; - - uint32_t *capability; - - uint32_t audit_session_id; - uid_t audit_login_uid; - - char *label; - - char *unique_name; - - char **well_known_names; - bool well_known_names_driver:1; - bool well_known_names_local:1; - - char *cgroup_root; - - char *description, *unescaped_description; -}; - -sd_bus_creds* bus_creds_new(void); - -void bus_creds_done(sd_bus_creds *c); - -int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid); - -int bus_creds_extend_by_pid(sd_bus_creds *c, uint64_t mask, sd_bus_creds **ret); diff --git a/src/libsystemd/sd-bus/bus-dump.c b/src/libsystemd/sd-bus/bus-dump.c deleted file mode 100644 index 7c81e7a25d..0000000000 --- a/src/libsystemd/sd-bus/bus-dump.c +++ /dev/null @@ -1,602 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "alloc-util.h" -#include "bus-dump.h" -#include "bus-internal.h" -#include "bus-message.h" -#include "bus-type.h" -#include "cap-list.h" -#include "capability-util.h" -#include "fileio.h" -#include "formats-util.h" -#include "locale-util.h" -#include "macro.h" -#include "string-util.h" -#include "strv.h" -#include "terminal-util.h" -#include "util.h" - -static char *indent(unsigned level, unsigned flags) { - char *p; - unsigned n, i = 0; - - n = 0; - - if (flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY && level > 0) - level -= 1; - - if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) - n += 2; - - p = new(char, n + level*8 + 1); - if (!p) - return NULL; - - if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) { - p[i++] = ' '; - p[i++] = ' '; - } - - memset(p + i, ' ', level*8); - p[i + level*8] = 0; - - return p; -} - -int bus_message_dump(sd_bus_message *m, FILE *f, unsigned flags) { - unsigned level = 1; - int r; - - assert(m); - - if (!f) - f = stdout; - - if (flags & BUS_MESSAGE_DUMP_WITH_HEADER) { - fprintf(f, - "%s%s%s Type=%s%s%s Endian=%c Flags=%u Version=%u Priority=%"PRIi64, - m->header->type == SD_BUS_MESSAGE_METHOD_ERROR ? ansi_highlight_red() : - m->header->type == SD_BUS_MESSAGE_METHOD_RETURN ? ansi_highlight_green() : - m->header->type != SD_BUS_MESSAGE_SIGNAL ? ansi_highlight() : "", draw_special_char(DRAW_TRIANGULAR_BULLET), ansi_normal(), - ansi_highlight(), bus_message_type_to_string(m->header->type), ansi_normal(), - m->header->endian, - m->header->flags, - m->header->version, - m->priority); - - /* Display synthetic message serial number in a more readable - * format than (uint32_t) -1 */ - if (BUS_MESSAGE_COOKIE(m) == 0xFFFFFFFFULL) - fprintf(f, " Cookie=-1"); - else - fprintf(f, " Cookie=%" PRIu64, BUS_MESSAGE_COOKIE(m)); - - if (m->reply_cookie != 0) - fprintf(f, " ReplyCookie=%" PRIu64, m->reply_cookie); - - fputs("\n", f); - - if (m->sender) - fprintf(f, " Sender=%s%s%s", ansi_highlight(), m->sender, ansi_normal()); - if (m->destination) - fprintf(f, " Destination=%s%s%s", ansi_highlight(), m->destination, ansi_normal()); - if (m->path) - fprintf(f, " Path=%s%s%s", ansi_highlight(), m->path, ansi_normal()); - if (m->interface) - fprintf(f, " Interface=%s%s%s", ansi_highlight(), m->interface, ansi_normal()); - if (m->member) - fprintf(f, " Member=%s%s%s", ansi_highlight(), m->member, ansi_normal()); - - if (m->sender || m->destination || m->path || m->interface || m->member) - fputs("\n", f); - - if (sd_bus_error_is_set(&m->error)) - fprintf(f, - " ErrorName=%s%s%s" - " ErrorMessage=%s\"%s\"%s\n", - ansi_highlight_red(), strna(m->error.name), ansi_normal(), - ansi_highlight_red(), strna(m->error.message), ansi_normal()); - - if (m->monotonic != 0) - fprintf(f, " Monotonic="USEC_FMT, m->monotonic); - if (m->realtime != 0) - fprintf(f, " Realtime="USEC_FMT, m->realtime); - if (m->seqnum != 0) - fprintf(f, " SequenceNumber=%"PRIu64, m->seqnum); - - if (m->monotonic != 0 || m->realtime != 0 || m->seqnum != 0) - fputs("\n", f); - - bus_creds_dump(&m->creds, f, true); - } - - r = sd_bus_message_rewind(m, !(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY)); - if (r < 0) - return log_error_errno(r, "Failed to rewind: %m"); - - if (!(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY)) { - _cleanup_free_ char *prefix = NULL; - - prefix = indent(0, flags); - if (!prefix) - return log_oom(); - - fprintf(f, "%sMESSAGE \"%s\" {\n", prefix, strempty(m->root_container.signature)); - } - - for (;;) { - _cleanup_free_ char *prefix = NULL; - const char *contents = NULL; - char type; - union { - uint8_t u8; - uint16_t u16; - int16_t s16; - uint32_t u32; - int32_t s32; - uint64_t u64; - int64_t s64; - double d64; - const char *string; - int i; - } basic; - - r = sd_bus_message_peek_type(m, &type, &contents); - if (r < 0) - return log_error_errno(r, "Failed to peek type: %m"); - - if (r == 0) { - if (level <= 1) - break; - - r = sd_bus_message_exit_container(m); - if (r < 0) - return log_error_errno(r, "Failed to exit container: %m"); - - level--; - - prefix = indent(level, flags); - if (!prefix) - return log_oom(); - - fprintf(f, "%s};\n", prefix); - continue; - } - - prefix = indent(level, flags); - if (!prefix) - return log_oom(); - - if (bus_type_is_container(type) > 0) { - r = sd_bus_message_enter_container(m, type, contents); - if (r < 0) - return log_error_errno(r, "Failed to enter container: %m"); - - if (type == SD_BUS_TYPE_ARRAY) - fprintf(f, "%sARRAY \"%s\" {\n", prefix, contents); - else if (type == SD_BUS_TYPE_VARIANT) - fprintf(f, "%sVARIANT \"%s\" {\n", prefix, contents); - else if (type == SD_BUS_TYPE_STRUCT) - fprintf(f, "%sSTRUCT \"%s\" {\n", prefix, contents); - else if (type == SD_BUS_TYPE_DICT_ENTRY) - fprintf(f, "%sDICT_ENTRY \"%s\" {\n", prefix, contents); - - level ++; - - continue; - } - - r = sd_bus_message_read_basic(m, type, &basic); - if (r < 0) - return log_error_errno(r, "Failed to get basic: %m"); - - assert(r > 0); - - switch (type) { - - case SD_BUS_TYPE_BYTE: - fprintf(f, "%sBYTE %s%u%s;\n", prefix, ansi_highlight(), basic.u8, ansi_normal()); - break; - - case SD_BUS_TYPE_BOOLEAN: - fprintf(f, "%sBOOLEAN %s%s%s;\n", prefix, ansi_highlight(), true_false(basic.i), ansi_normal()); - break; - - case SD_BUS_TYPE_INT16: - fprintf(f, "%sINT16 %s%i%s;\n", prefix, ansi_highlight(), basic.s16, ansi_normal()); - break; - - case SD_BUS_TYPE_UINT16: - fprintf(f, "%sUINT16 %s%u%s;\n", prefix, ansi_highlight(), basic.u16, ansi_normal()); - break; - - case SD_BUS_TYPE_INT32: - fprintf(f, "%sINT32 %s%i%s;\n", prefix, ansi_highlight(), basic.s32, ansi_normal()); - break; - - case SD_BUS_TYPE_UINT32: - fprintf(f, "%sUINT32 %s%u%s;\n", prefix, ansi_highlight(), basic.u32, ansi_normal()); - break; - - case SD_BUS_TYPE_INT64: - fprintf(f, "%sINT64 %s%"PRIi64"%s;\n", prefix, ansi_highlight(), basic.s64, ansi_normal()); - break; - - case SD_BUS_TYPE_UINT64: - fprintf(f, "%sUINT64 %s%"PRIu64"%s;\n", prefix, ansi_highlight(), basic.u64, ansi_normal()); - break; - - case SD_BUS_TYPE_DOUBLE: - fprintf(f, "%sDOUBLE %s%g%s;\n", prefix, ansi_highlight(), basic.d64, ansi_normal()); - break; - - case SD_BUS_TYPE_STRING: - fprintf(f, "%sSTRING \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal()); - break; - - case SD_BUS_TYPE_OBJECT_PATH: - fprintf(f, "%sOBJECT_PATH \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal()); - break; - - case SD_BUS_TYPE_SIGNATURE: - fprintf(f, "%sSIGNATURE \"%s%s%s\";\n", prefix, ansi_highlight(), basic.string, ansi_normal()); - break; - - case SD_BUS_TYPE_UNIX_FD: - fprintf(f, "%sUNIX_FD %s%i%s;\n", prefix, ansi_highlight(), basic.i, ansi_normal()); - break; - - default: - assert_not_reached("Unknown basic type."); - } - } - - if (!(flags & BUS_MESSAGE_DUMP_SUBTREE_ONLY)) { - _cleanup_free_ char *prefix = NULL; - - prefix = indent(0, flags); - if (!prefix) - return log_oom(); - - fprintf(f, "%s};\n\n", prefix); - } - - return 0; -} - -static void dump_capabilities( - sd_bus_creds *c, - FILE *f, - const char *name, - bool terse, - int (*has)(sd_bus_creds *c, int capability)) { - - unsigned long i, last_cap; - unsigned n = 0; - int r; - - assert(c); - assert(f); - assert(name); - assert(has); - - i = 0; - r = has(c, i); - if (r < 0) - return; - - fprintf(f, "%s%s=%s", terse ? " " : "", name, terse ? "" : ansi_highlight()); - last_cap = cap_last_cap(); - - for (;;) { - if (r > 0) { - - if (n > 0) - fputc(' ', f); - if (n % 4 == 3) - fprintf(f, terse ? "\n " : "\n "); - - fprintf(f, "%s", strna(capability_to_name(i))); - n++; - } - - i++; - - if (i > last_cap) - break; - - r = has(c, i); - } - - fputs("\n", f); - - if (!terse) - fputs(ansi_normal(), f); -} - -int bus_creds_dump(sd_bus_creds *c, FILE *f, bool terse) { - uid_t owner, audit_loginuid; - uint32_t audit_sessionid; - char **cmdline = NULL, **well_known = NULL; - const char *prefix, *color, *suffix, *s; - int r, q, v, w, z; - - assert(c); - - if (!f) - f = stdout; - - if (terse) { - prefix = " "; - suffix = ""; - color = ""; - } else { - const char *off; - - prefix = ""; - color = ansi_highlight(); - - off = ansi_normal(); - suffix = strjoina(off, "\n"); - } - - if (c->mask & SD_BUS_CREDS_PID) - fprintf(f, "%sPID=%s"PID_FMT"%s", prefix, color, c->pid, suffix); - if (c->mask & SD_BUS_CREDS_TID) - fprintf(f, "%sTID=%s"PID_FMT"%s", prefix, color, c->tid, suffix); - if (c->mask & SD_BUS_CREDS_PPID) { - if (c->ppid == 0) - fprintf(f, "%sPPID=%sn/a%s", prefix, color, suffix); - else - fprintf(f, "%sPPID=%s"PID_FMT"%s", prefix, color, c->ppid, suffix); - } - if (c->mask & SD_BUS_CREDS_TTY) - fprintf(f, "%sTTY=%s%s%s", prefix, color, strna(c->tty), suffix); - - if (terse && ((c->mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_PPID|SD_BUS_CREDS_TTY)))) - fputs("\n", f); - - if (c->mask & SD_BUS_CREDS_UID) - fprintf(f, "%sUID=%s"UID_FMT"%s", prefix, color, c->uid, suffix); - if (c->mask & SD_BUS_CREDS_EUID) - fprintf(f, "%sEUID=%s"UID_FMT"%s", prefix, color, c->euid, suffix); - if (c->mask & SD_BUS_CREDS_SUID) - fprintf(f, "%sSUID=%s"UID_FMT"%s", prefix, color, c->suid, suffix); - if (c->mask & SD_BUS_CREDS_FSUID) - fprintf(f, "%sFSUID=%s"UID_FMT"%s", prefix, color, c->fsuid, suffix); - r = sd_bus_creds_get_owner_uid(c, &owner); - if (r >= 0) - fprintf(f, "%sOwnerUID=%s"UID_FMT"%s", prefix, color, owner, suffix); - if (c->mask & SD_BUS_CREDS_GID) - fprintf(f, "%sGID=%s"GID_FMT"%s", prefix, color, c->gid, suffix); - if (c->mask & SD_BUS_CREDS_EGID) - fprintf(f, "%sEGID=%s"GID_FMT"%s", prefix, color, c->egid, suffix); - if (c->mask & SD_BUS_CREDS_SGID) - fprintf(f, "%sSGID=%s"GID_FMT"%s", prefix, color, c->sgid, suffix); - if (c->mask & SD_BUS_CREDS_FSGID) - fprintf(f, "%sFSGID=%s"GID_FMT"%s", prefix, color, c->fsgid, suffix); - - if (c->mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) { - unsigned i; - - fprintf(f, "%sSupplementaryGIDs=%s", prefix, color); - for (i = 0; i < c->n_supplementary_gids; i++) - fprintf(f, "%s" GID_FMT, i > 0 ? " " : "", c->supplementary_gids[i]); - fprintf(f, "%s", suffix); - } - - if (terse && ((c->mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID| - SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID| - SD_BUS_CREDS_SUPPLEMENTARY_GIDS)) || r >= 0)) - fputs("\n", f); - - if (c->mask & SD_BUS_CREDS_COMM) - fprintf(f, "%sComm=%s%s%s", prefix, color, c->comm, suffix); - if (c->mask & SD_BUS_CREDS_TID_COMM) - fprintf(f, "%sTIDComm=%s%s%s", prefix, color, c->tid_comm, suffix); - if (c->mask & SD_BUS_CREDS_EXE) - fprintf(f, "%sExe=%s%s%s", prefix, color, strna(c->exe), suffix); - - if (terse && (c->mask & (SD_BUS_CREDS_EXE|SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM))) - fputs("\n", f); - - r = sd_bus_creds_get_cmdline(c, &cmdline); - if (r >= 0) { - char **i; - - fprintf(f, "%sCommandLine=%s", prefix, color); - STRV_FOREACH(i, cmdline) { - if (i != cmdline) - fputc(' ', f); - - fputs(*i, f); - } - - fprintf(f, "%s", suffix); - } else if (r != -ENODATA) - fprintf(f, "%sCommandLine=%sn/a%s", prefix, color, suffix); - - if (c->mask & SD_BUS_CREDS_SELINUX_CONTEXT) - fprintf(f, "%sLabel=%s%s%s", prefix, color, c->label, suffix); - if (c->mask & SD_BUS_CREDS_DESCRIPTION) - fprintf(f, "%sDescription=%s%s%s", prefix, color, c->description, suffix); - - if (terse && (c->mask & (SD_BUS_CREDS_SELINUX_CONTEXT|SD_BUS_CREDS_DESCRIPTION))) - fputs("\n", f); - - if (c->mask & SD_BUS_CREDS_CGROUP) - fprintf(f, "%sCGroup=%s%s%s", prefix, color, c->cgroup, suffix); - s = NULL; - r = sd_bus_creds_get_unit(c, &s); - if (r != -ENODATA) - fprintf(f, "%sUnit=%s%s%s", prefix, color, strna(s), suffix); - s = NULL; - v = sd_bus_creds_get_slice(c, &s); - if (v != -ENODATA) - fprintf(f, "%sSlice=%s%s%s", prefix, color, strna(s), suffix); - s = NULL; - q = sd_bus_creds_get_user_unit(c, &s); - if (q != -ENODATA) - fprintf(f, "%sUserUnit=%s%s%s", prefix, color, strna(s), suffix); - s = NULL; - w = sd_bus_creds_get_user_slice(c, &s); - if (w != -ENODATA) - fprintf(f, "%sUserSlice=%s%s%s", prefix, color, strna(s), suffix); - s = NULL; - z = sd_bus_creds_get_session(c, &s); - if (z != -ENODATA) - fprintf(f, "%sSession=%s%s%s", prefix, color, strna(s), suffix); - - if (terse && ((c->mask & SD_BUS_CREDS_CGROUP) || r != -ENODATA || q != -ENODATA || v != -ENODATA || w != -ENODATA || z != -ENODATA)) - fputs("\n", f); - - r = sd_bus_creds_get_audit_login_uid(c, &audit_loginuid); - if (r >= 0) - fprintf(f, "%sAuditLoginUID=%s"UID_FMT"%s", prefix, color, audit_loginuid, suffix); - else if (r != -ENODATA) - fprintf(f, "%sAuditLoginUID=%sn/a%s", prefix, color, suffix); - q = sd_bus_creds_get_audit_session_id(c, &audit_sessionid); - if (q >= 0) - fprintf(f, "%sAuditSessionID=%s%"PRIu32"%s", prefix, color, audit_sessionid, suffix); - else if (q != -ENODATA) - fprintf(f, "%sAuditSessionID=%sn/a%s", prefix, color, suffix); - - if (terse && (r != -ENODATA || q != -ENODATA)) - fputs("\n", f); - - if (c->mask & SD_BUS_CREDS_UNIQUE_NAME) - fprintf(f, "%sUniqueName=%s%s%s", prefix, color, c->unique_name, suffix); - - if (sd_bus_creds_get_well_known_names(c, &well_known) >= 0) { - char **i; - - fprintf(f, "%sWellKnownNames=%s", prefix, color); - STRV_FOREACH(i, well_known) { - if (i != well_known) - fputc(' ', f); - - fputs(*i, f); - } - - fprintf(f, "%s", suffix); - } - - if (terse && (c->mask & SD_BUS_CREDS_UNIQUE_NAME || well_known)) - fputc('\n', f); - - dump_capabilities(c, f, "EffectiveCapabilities", terse, sd_bus_creds_has_effective_cap); - dump_capabilities(c, f, "PermittedCapabilities", terse, sd_bus_creds_has_permitted_cap); - dump_capabilities(c, f, "InheritableCapabilities", terse, sd_bus_creds_has_inheritable_cap); - dump_capabilities(c, f, "BoundingCapabilities", terse, sd_bus_creds_has_bounding_cap); - - return 0; -} - -/* - * For details about the file format, see: - * - * http://wiki.wireshark.org/Development/LibpcapFileFormat - */ - -typedef struct _packed_ pcap_hdr_s { - uint32_t magic_number; /* magic number */ - uint16_t version_major; /* major version number */ - uint16_t version_minor; /* minor version number */ - int32_t thiszone; /* GMT to local correction */ - uint32_t sigfigs; /* accuracy of timestamps */ - uint32_t snaplen; /* max length of captured packets, in octets */ - uint32_t network; /* data link type */ -} pcap_hdr_t ; - -typedef struct _packed_ pcaprec_hdr_s { - uint32_t ts_sec; /* timestamp seconds */ - uint32_t ts_usec; /* timestamp microseconds */ - uint32_t incl_len; /* number of octets of packet saved in file */ - uint32_t orig_len; /* actual length of packet */ -} pcaprec_hdr_t; - -int bus_pcap_header(size_t snaplen, FILE *f) { - - pcap_hdr_t hdr = { - .magic_number = 0xa1b2c3d4U, - .version_major = 2, - .version_minor = 4, - .thiszone = 0, /* UTC */ - .sigfigs = 0, - .network = 231, /* D-Bus */ - }; - - if (!f) - f = stdout; - - assert(snaplen > 0); - assert((size_t) (uint32_t) snaplen == snaplen); - - hdr.snaplen = (uint32_t) snaplen; - - fwrite(&hdr, 1, sizeof(hdr), f); - - return fflush_and_check(f); -} - -int bus_message_pcap_frame(sd_bus_message *m, size_t snaplen, FILE *f) { - struct bus_body_part *part; - pcaprec_hdr_t hdr = {}; - struct timeval tv; - unsigned i; - size_t w; - - if (!f) - f = stdout; - - assert(m); - assert(snaplen > 0); - assert((size_t) (uint32_t) snaplen == snaplen); - - if (m->realtime != 0) - timeval_store(&tv, m->realtime); - else - assert_se(gettimeofday(&tv, NULL) >= 0); - - hdr.ts_sec = tv.tv_sec; - hdr.ts_usec = tv.tv_usec; - hdr.orig_len = BUS_MESSAGE_SIZE(m); - hdr.incl_len = MIN(hdr.orig_len, snaplen); - - /* write the pcap header */ - fwrite(&hdr, 1, sizeof(hdr), f); - - /* write the dbus header */ - w = MIN(BUS_MESSAGE_BODY_BEGIN(m), snaplen); - fwrite(m->header, 1, w, f); - snaplen -= w; - - /* write the dbus body */ - MESSAGE_FOREACH_PART(part, i, m) { - if (snaplen <= 0) - break; - - w = MIN(part->size, snaplen); - fwrite(part->data, 1, w, f); - snaplen -= w; - } - - return fflush_and_check(f); -} diff --git a/src/libsystemd/sd-bus/bus-dump.h b/src/libsystemd/sd-bus/bus-dump.h deleted file mode 100644 index 874e86d09c..0000000000 --- a/src/libsystemd/sd-bus/bus-dump.h +++ /dev/null @@ -1,37 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> -#include <stdio.h> - -#include "sd-bus.h" - -enum { - BUS_MESSAGE_DUMP_WITH_HEADER = 1, - BUS_MESSAGE_DUMP_SUBTREE_ONLY = 2, -}; - -int bus_message_dump(sd_bus_message *m, FILE *f, unsigned flags); - -int bus_creds_dump(sd_bus_creds *c, FILE *f, bool terse); - -int bus_pcap_header(size_t snaplen, FILE *f); -int bus_message_pcap_frame(sd_bus_message *m, size_t snaplen, FILE *f); diff --git a/src/libsystemd/sd-bus/bus-error.c b/src/libsystemd/sd-bus/bus-error.c deleted file mode 100644 index 26219bdeed..0000000000 --- a/src/libsystemd/sd-bus/bus-error.c +++ /dev/null @@ -1,608 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <stdarg.h> -#include <stdbool.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-error.h" -#include "errno-list.h" -#include "string-util.h" -#include "util.h" - -BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map bus_standard_errors[] = { - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.Failed", EACCES), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NoMemory", ENOMEM), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.ServiceUnknown", EHOSTUNREACH), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NameHasNoOwner", ENXIO), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NoReply", ETIMEDOUT), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.IOError", EIO), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.BadAddress", EADDRNOTAVAIL), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NotSupported", EOPNOTSUPP), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.LimitsExceeded", ENOBUFS), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.AccessDenied", EACCES), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.AuthFailed", EACCES), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InteractiveAuthorizationRequired", EACCES), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NoServer", EHOSTDOWN), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.Timeout", ETIMEDOUT), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.NoNetwork", ENONET), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.AddressInUse", EADDRINUSE), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.Disconnected", ECONNRESET), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InvalidArgs", EINVAL), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.FileNotFound", ENOENT), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.FileExists", EEXIST), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnknownMethod", EBADR), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnknownObject", EBADR), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnknownInterface", EBADR), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnknownProperty", EBADR), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.PropertyReadOnly", EROFS), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.UnixProcessIdUnknown", ESRCH), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InvalidSignature", EINVAL), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InconsistentMessage", EBADMSG), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.TimedOut", ETIMEDOUT), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.MatchRuleInvalid", EINVAL), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.InvalidFileContent", EINVAL), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.MatchRuleNotFound", ENOENT), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.SELinuxSecurityContextUnknown", ESRCH), - SD_BUS_ERROR_MAP("org.freedesktop.DBus.Error.ObjectPathInUse", EBUSY), - SD_BUS_ERROR_MAP_END -}; - -/* GCC maps this magically to the beginning and end of the BUS_ERROR_MAP section. - * Hide them; for currently unknown reasons they get exported to the shared libries - * even without being listed in the sym file. */ -extern const sd_bus_error_map __start_BUS_ERROR_MAP[] _hidden_; -extern const sd_bus_error_map __stop_BUS_ERROR_MAP[] _hidden_; - -/* Additional maps registered with sd_bus_error_add_map() are in this - * NULL terminated array */ -static const sd_bus_error_map **additional_error_maps = NULL; - -static int bus_error_name_to_errno(const char *name) { - const sd_bus_error_map **map, *m; - const char *p; - int r; - - if (!name) - return EINVAL; - - p = startswith(name, "System.Error."); - if (p) { - r = errno_from_name(p); - if (r < 0) - return EIO; - - return r; - } - - if (additional_error_maps) - for (map = additional_error_maps; *map; map++) - for (m = *map;; m++) { - /* For additional error maps the end marker is actually the end marker */ - if (m->code == BUS_ERROR_MAP_END_MARKER) - break; - - if (streq(m->name, name)) - return m->code; - } - - m = __start_BUS_ERROR_MAP; - while (m < __stop_BUS_ERROR_MAP) { - /* For magic ELF error maps, the end marker might - * appear in the middle of things, since multiple maps - * might appear in the same section. Hence, let's skip - * over it, but realign the pointer to the next 8 byte - * boundary, which is the selected alignment for the - * arrays. */ - if (m->code == BUS_ERROR_MAP_END_MARKER) { - m = ALIGN8_PTR(m+1); - continue; - } - - if (streq(m->name, name)) - return m->code; - - m++; - } - - return EIO; -} - -static sd_bus_error errno_to_bus_error_const(int error) { - - if (error < 0) - error = -error; - - switch (error) { - - case ENOMEM: - return BUS_ERROR_OOM; - - case EPERM: - case EACCES: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_ACCESS_DENIED, "Access denied"); - - case EINVAL: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid argument"); - - case ESRCH: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN, "No such process"); - - case ENOENT: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FILE_NOT_FOUND, "File not found"); - - case EEXIST: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FILE_EXISTS, "File exists"); - - case ETIMEDOUT: - case ETIME: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_TIMEOUT, "Timed out"); - - case EIO: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_IO_ERROR, "Input/output error"); - - case ENETRESET: - case ECONNABORTED: - case ECONNRESET: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_DISCONNECTED, "Disconnected"); - - case EOPNOTSUPP: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NOT_SUPPORTED, "Not supported"); - - case EADDRNOTAVAIL: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_BAD_ADDRESS, "Address not available"); - - case ENOBUFS: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_LIMITS_EXCEEDED, "Limits exceeded"); - - case EADDRINUSE: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_ADDRESS_IN_USE, "Address in use"); - - case EBADMSG: - return SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Inconsistent message"); - } - - return SD_BUS_ERROR_NULL; -} - -static int errno_to_bus_error_name_new(int error, char **ret) { - const char *name; - char *n; - - if (error < 0) - error = -error; - - name = errno_to_name(error); - if (!name) - return 0; - - n = strappend("System.Error.", name); - if (!n) - return -ENOMEM; - - *ret = n; - return 1; -} - -bool bus_error_is_dirty(sd_bus_error *e) { - if (!e) - return false; - - return e->name || e->message || e->_need_free != 0; -} - -_public_ void sd_bus_error_free(sd_bus_error *e) { - if (!e) - return; - - if (e->_need_free > 0) { - free((void*) e->name); - free((void*) e->message); - } - - e->name = e->message = NULL; - e->_need_free = 0; -} - -_public_ int sd_bus_error_set(sd_bus_error *e, const char *name, const char *message) { - - if (!name) - return 0; - if (!e) - goto finish; - - assert_return(!bus_error_is_dirty(e), -EINVAL); - - e->name = strdup(name); - if (!e->name) { - *e = BUS_ERROR_OOM; - return -ENOMEM; - } - - if (message) - e->message = strdup(message); - - e->_need_free = 1; - -finish: - return -bus_error_name_to_errno(name); -} - -int bus_error_setfv(sd_bus_error *e, const char *name, const char *format, va_list ap) { - - if (!name) - return 0; - - if (e) { - assert_return(!bus_error_is_dirty(e), -EINVAL); - - e->name = strdup(name); - if (!e->name) { - *e = BUS_ERROR_OOM; - return -ENOMEM; - } - - /* If we hit OOM on formatting the pretty message, we ignore - * this, since we at least managed to write the error name */ - if (format) - (void) vasprintf((char**) &e->message, format, ap); - - e->_need_free = 1; - } - - return -bus_error_name_to_errno(name); -} - -_public_ int sd_bus_error_setf(sd_bus_error *e, const char *name, const char *format, ...) { - - if (format) { - int r; - va_list ap; - - va_start(ap, format); - r = bus_error_setfv(e, name, format, ap); - va_end(ap); - - return r; - } - - return sd_bus_error_set(e, name, NULL); -} - -_public_ int sd_bus_error_copy(sd_bus_error *dest, const sd_bus_error *e) { - - if (!sd_bus_error_is_set(e)) - return 0; - if (!dest) - goto finish; - - assert_return(!bus_error_is_dirty(dest), -EINVAL); - - /* - * _need_free < 0 indicates that the error is temporarily const, needs deep copying - * _need_free == 0 indicates that the error is perpetually const, needs no deep copying - * _need_free > 0 indicates that the error is fully dynamic, needs deep copying - */ - - if (e->_need_free == 0) - *dest = *e; - else { - dest->name = strdup(e->name); - if (!dest->name) { - *dest = BUS_ERROR_OOM; - return -ENOMEM; - } - - if (e->message) - dest->message = strdup(e->message); - - dest->_need_free = 1; - } - -finish: - return -bus_error_name_to_errno(e->name); -} - -_public_ int sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *message) { - if (!name) - return 0; - if (!e) - goto finish; - - assert_return(!bus_error_is_dirty(e), -EINVAL); - - *e = SD_BUS_ERROR_MAKE_CONST(name, message); - -finish: - return -bus_error_name_to_errno(name); -} - -_public_ int sd_bus_error_is_set(const sd_bus_error *e) { - if (!e) - return 0; - - return !!e->name; -} - -_public_ int sd_bus_error_has_name(const sd_bus_error *e, const char *name) { - if (!e) - return 0; - - return streq_ptr(e->name, name); -} - -_public_ int sd_bus_error_get_errno(const sd_bus_error* e) { - if (!e) - return 0; - - if (!e->name) - return 0; - - return bus_error_name_to_errno(e->name); -} - -static void bus_error_strerror(sd_bus_error *e, int error) { - size_t k = 64; - char *m; - - assert(e); - - for (;;) { - char *x; - - m = new(char, k); - if (!m) - return; - - errno = 0; - x = strerror_r(error, m, k); - if (errno == ERANGE || strlen(x) >= k - 1) { - free(m); - k *= 2; - continue; - } - - if (errno) { - free(m); - return; - } - - if (x == m) { - if (e->_need_free > 0) { - /* Error is already dynamic, let's just update the message */ - free((char*) e->message); - e->message = x; - - } else { - char *t; - /* Error was const so far, let's make it dynamic, if we can */ - - t = strdup(e->name); - if (!t) { - free(m); - return; - } - - e->_need_free = 1; - e->name = t; - e->message = x; - } - } else { - free(m); - - if (e->_need_free > 0) { - char *t; - - /* Error is dynamic, let's hence make the message also dynamic */ - t = strdup(x); - if (!t) - return; - - free((char*) e->message); - e->message = t; - } else { - /* Error is const, hence we can just override */ - e->message = x; - } - } - - return; - } -} - -_public_ int sd_bus_error_set_errno(sd_bus_error *e, int error) { - - if (error < 0) - error = -error; - - if (!e) - return -error; - if (error == 0) - return -error; - - assert_return(!bus_error_is_dirty(e), -EINVAL); - - /* First, try a const translation */ - *e = errno_to_bus_error_const(error); - - if (!sd_bus_error_is_set(e)) { - int k; - - /* If that didn't work, try a dynamic one. */ - - k = errno_to_bus_error_name_new(error, (char**) &e->name); - if (k > 0) - e->_need_free = 1; - else if (k < 0) { - *e = BUS_ERROR_OOM; - return -error; - } else - *e = BUS_ERROR_FAILED; - } - - /* Now, fill in the message from strerror() if we can */ - bus_error_strerror(e, error); - return -error; -} - -_public_ int sd_bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) { - PROTECT_ERRNO; - int r; - - if (error < 0) - error = -error; - - if (!e) - return -error; - if (error == 0) - return 0; - - assert_return(!bus_error_is_dirty(e), -EINVAL); - - /* First, try a const translation */ - *e = errno_to_bus_error_const(error); - - if (!sd_bus_error_is_set(e)) { - int k; - - /* If that didn't work, try a dynamic one */ - - k = errno_to_bus_error_name_new(error, (char**) &e->name); - if (k > 0) - e->_need_free = 1; - else if (k < 0) { - *e = BUS_ERROR_OOM; - return -ENOMEM; - } else - *e = BUS_ERROR_FAILED; - } - - if (format) { - char *m; - - /* Then, let's try to fill in the supplied message */ - - errno = error; /* Make sure that %m resolves to the specified error */ - r = vasprintf(&m, format, ap); - if (r >= 0) { - - if (e->_need_free <= 0) { - char *t; - - t = strdup(e->name); - if (t) { - e->_need_free = 1; - e->name = t; - e->message = m; - return -error; - } - - free(m); - } else { - free((char*) e->message); - e->message = m; - return -error; - } - } - } - - /* If that didn't work, use strerror() for the message */ - bus_error_strerror(e, error); - return -error; -} - -_public_ int sd_bus_error_set_errnof(sd_bus_error *e, int error, const char *format, ...) { - int r; - - if (error < 0) - error = -error; - - if (!e) - return -error; - if (error == 0) - return 0; - - assert_return(!bus_error_is_dirty(e), -EINVAL); - - if (format) { - va_list ap; - - va_start(ap, format); - r = sd_bus_error_set_errnofv(e, error, format, ap); - va_end(ap); - - return r; - } - - return sd_bus_error_set_errno(e, error); -} - -const char *bus_error_message(const sd_bus_error *e, int error) { - - if (e) { - /* Sometimes, the D-Bus server is a little bit too verbose with - * its error messages, so let's override them here */ - if (sd_bus_error_has_name(e, SD_BUS_ERROR_ACCESS_DENIED)) - return "Access denied"; - - if (e->message) - return e->message; - } - - if (error < 0) - error = -error; - - return strerror(error); -} - -static bool map_ok(const sd_bus_error_map *map) { - for (; map->code != BUS_ERROR_MAP_END_MARKER; map++) - if (!map->name || map->code <=0) - return false; - return true; -} - -_public_ int sd_bus_error_add_map(const sd_bus_error_map *map) { - const sd_bus_error_map **maps = NULL; - unsigned n = 0; - - assert_return(map, -EINVAL); - assert_return(map_ok(map), -EINVAL); - - if (additional_error_maps) - for (; additional_error_maps[n] != NULL; n++) - if (additional_error_maps[n] == map) - return 0; - - maps = realloc_multiply(additional_error_maps, sizeof(struct sd_bus_error_map*), n + 2); - if (!maps) - return -ENOMEM; - - maps[n] = map; - maps[n+1] = NULL; - - additional_error_maps = maps; - return 1; -} diff --git a/src/libsystemd/sd-bus/bus-error.h b/src/libsystemd/sd-bus/bus-error.h deleted file mode 100644 index e2c4cf4b3f..0000000000 --- a/src/libsystemd/sd-bus/bus-error.h +++ /dev/null @@ -1,64 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> - -#include "sd-bus.h" - -#include "macro.h" - -bool bus_error_is_dirty(sd_bus_error *e); - -const char *bus_error_message(const sd_bus_error *e, int error); - -int bus_error_setfv(sd_bus_error *e, const char *name, const char *format, va_list ap) _printf_(3,0); -int bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) _printf_(3,0); - -#define BUS_ERROR_OOM SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_MEMORY, "Out of memory") -#define BUS_ERROR_FAILED SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FAILED, "Operation failed") - -/* - * There are two ways to register error maps with the error translation - * logic: by using BUS_ERROR_MAP_ELF_REGISTER, which however only - * works when linked into the same ELF module, or via - * sd_bus_error_add_map() which is the official, external API, that - * works from any module. - * - * Note that BUS_ERROR_MAP_ELF_REGISTER has to be used as decorator in - * the bus error table, and BUS_ERROR_MAP_ELF_USE has to be used at - * least once per compilation unit (i.e. per library), to ensure that - * the error map is really added to the final binary. - */ - -#define BUS_ERROR_MAP_ELF_REGISTER \ - __attribute__ ((__section__("BUS_ERROR_MAP"))) \ - __attribute__ ((__used__)) \ - __attribute__ ((aligned(8))) - -#define BUS_ERROR_MAP_ELF_USE(errors) \ - extern const sd_bus_error_map errors[]; \ - __attribute__ ((used)) static const sd_bus_error_map * const CONCATENATE(errors ## _copy_, __COUNTER__) = errors; - -/* We use something exotic as end marker, to ensure people build the - * maps using the macsd-ros. */ -#define BUS_ERROR_MAP_END_MARKER -'x' - -BUS_ERROR_MAP_ELF_USE(bus_standard_errors); diff --git a/src/libsystemd/sd-bus/bus-gvariant.c b/src/libsystemd/sd-bus/bus-gvariant.c deleted file mode 100644 index 58782767fa..0000000000 --- a/src/libsystemd/sd-bus/bus-gvariant.c +++ /dev/null @@ -1,311 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-gvariant.h" -#include "bus-signature.h" -#include "bus-type.h" - -int bus_gvariant_get_size(const char *signature) { - const char *p; - int sum = 0, r; - - /* For fixed size structs. Fails for variable size structs. */ - - p = signature; - while (*p != 0) { - size_t n; - - r = signature_element_length(p, &n); - if (r < 0) - return r; - else { - char t[n+1]; - - memcpy(t, p, n); - t[n] = 0; - - r = bus_gvariant_get_alignment(t); - if (r < 0) - return r; - - sum = ALIGN_TO(sum, r); - } - - switch (*p) { - - case SD_BUS_TYPE_BOOLEAN: - case SD_BUS_TYPE_BYTE: - sum += 1; - break; - - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - sum += 2; - break; - - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - case SD_BUS_TYPE_UNIX_FD: - sum += 4; - break; - - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - sum += 8; - break; - - case SD_BUS_TYPE_STRUCT_BEGIN: - case SD_BUS_TYPE_DICT_ENTRY_BEGIN: { - if (n == 2) { - /* unary type () has fixed size of 1 */ - r = 1; - } else { - char t[n-1]; - - memcpy(t, p + 1, n - 2); - t[n - 2] = 0; - - r = bus_gvariant_get_size(t); - if (r < 0) - return r; - } - - sum += r; - break; - } - - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: - case SD_BUS_TYPE_ARRAY: - case SD_BUS_TYPE_VARIANT: - return -EINVAL; - - default: - assert_not_reached("Unknown signature type"); - } - - p += n; - } - - r = bus_gvariant_get_alignment(signature); - if (r < 0) - return r; - - return ALIGN_TO(sum, r); -} - -int bus_gvariant_get_alignment(const char *signature) { - size_t alignment = 1; - const char *p; - int r; - - p = signature; - while (*p != 0 && alignment < 8) { - size_t n; - int a; - - r = signature_element_length(p, &n); - if (r < 0) - return r; - - switch (*p) { - - case SD_BUS_TYPE_BYTE: - case SD_BUS_TYPE_BOOLEAN: - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: - a = 1; - break; - - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - a = 2; - break; - - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - case SD_BUS_TYPE_UNIX_FD: - a = 4; - break; - - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - case SD_BUS_TYPE_VARIANT: - a = 8; - break; - - case SD_BUS_TYPE_ARRAY: { - char t[n]; - - memcpy(t, p + 1, n - 1); - t[n - 1] = 0; - - a = bus_gvariant_get_alignment(t); - break; - } - - case SD_BUS_TYPE_STRUCT_BEGIN: - case SD_BUS_TYPE_DICT_ENTRY_BEGIN: { - char t[n-1]; - - memcpy(t, p + 1, n - 2); - t[n - 2] = 0; - - a = bus_gvariant_get_alignment(t); - break; - } - - default: - assert_not_reached("Unknown signature type"); - } - - if (a < 0) - return a; - - assert(a > 0 && a <= 8); - if ((size_t) a > alignment) - alignment = (size_t) a; - - p += n; - } - - return alignment; -} - -int bus_gvariant_is_fixed_size(const char *signature) { - const char *p; - int r; - - assert(signature); - - p = signature; - while (*p != 0) { - size_t n; - - r = signature_element_length(p, &n); - if (r < 0) - return r; - - switch (*p) { - - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: - case SD_BUS_TYPE_ARRAY: - case SD_BUS_TYPE_VARIANT: - return 0; - - case SD_BUS_TYPE_BYTE: - case SD_BUS_TYPE_BOOLEAN: - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - case SD_BUS_TYPE_UNIX_FD: - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - break; - - case SD_BUS_TYPE_STRUCT_BEGIN: - case SD_BUS_TYPE_DICT_ENTRY_BEGIN: { - char t[n-1]; - - memcpy(t, p + 1, n - 2); - t[n - 2] = 0; - - r = bus_gvariant_is_fixed_size(t); - if (r <= 0) - return r; - break; - } - - default: - assert_not_reached("Unknown signature type"); - } - - p += n; - } - - return true; -} - -size_t bus_gvariant_determine_word_size(size_t sz, size_t extra) { - if (sz + extra <= 0xFF) - return 1; - else if (sz + extra*2 <= 0xFFFF) - return 2; - else if (sz + extra*4 <= 0xFFFFFFFF) - return 4; - else - return 8; -} - -size_t bus_gvariant_read_word_le(void *p, size_t sz) { - union { - uint16_t u16; - uint32_t u32; - uint64_t u64; - } x; - - assert(p); - - if (sz == 1) - return *(uint8_t*) p; - - memcpy(&x, p, sz); - - if (sz == 2) - return le16toh(x.u16); - else if (sz == 4) - return le32toh(x.u32); - else if (sz == 8) - return le64toh(x.u64); - - assert_not_reached("unknown word width"); -} - -void bus_gvariant_write_word_le(void *p, size_t sz, size_t value) { - union { - uint16_t u16; - uint32_t u32; - uint64_t u64; - } x; - - assert(p); - assert(sz == 8 || (value < (1ULL << (sz*8)))); - - if (sz == 1) { - *(uint8_t*) p = value; - return; - } else if (sz == 2) - x.u16 = htole16((uint16_t) value); - else if (sz == 4) - x.u32 = htole32((uint32_t) value); - else if (sz == 8) - x.u64 = htole64((uint64_t) value); - else - assert_not_reached("unknown word width"); - - memcpy(p, &x, sz); -} diff --git a/src/libsystemd/sd-bus/bus-gvariant.h b/src/libsystemd/sd-bus/bus-gvariant.h deleted file mode 100644 index 6da637fb05..0000000000 --- a/src/libsystemd/sd-bus/bus-gvariant.h +++ /dev/null @@ -1,30 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "macro.h" - -int bus_gvariant_get_size(const char *signature) _pure_; -int bus_gvariant_get_alignment(const char *signature) _pure_; -int bus_gvariant_is_fixed_size(const char *signature) _pure_; - -size_t bus_gvariant_determine_word_size(size_t sz, size_t extra); -void bus_gvariant_write_word_le(void *p, size_t sz, size_t value); -size_t bus_gvariant_read_word_le(void *p, size_t sz); diff --git a/src/libsystemd/sd-bus/bus-internal.c b/src/libsystemd/sd-bus/bus-internal.c deleted file mode 100644 index caca679086..0000000000 --- a/src/libsystemd/sd-bus/bus-internal.c +++ /dev/null @@ -1,374 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "alloc-util.h" -#include "bus-internal.h" -#include "bus-message.h" -#include "hexdecoct.h" -#include "string-util.h" - -bool object_path_is_valid(const char *p) { - const char *q; - bool slash; - - if (!p) - return false; - - if (p[0] != '/') - return false; - - if (p[1] == 0) - return true; - - for (slash = true, q = p+1; *q; q++) - if (*q == '/') { - if (slash) - return false; - - slash = true; - } else { - bool good; - - good = - (*q >= 'a' && *q <= 'z') || - (*q >= 'A' && *q <= 'Z') || - (*q >= '0' && *q <= '9') || - *q == '_'; - - if (!good) - return false; - - slash = false; - } - - if (slash) - return false; - - return true; -} - -char* object_path_startswith(const char *a, const char *b) { - const char *p; - - if (!object_path_is_valid(a) || - !object_path_is_valid(b)) - return NULL; - - if (streq(b, "/")) - return (char*) a + 1; - - p = startswith(a, b); - if (!p) - return NULL; - - if (*p == 0) - return (char*) p; - - if (*p == '/') - return (char*) p + 1; - - return NULL; -} - -bool interface_name_is_valid(const char *p) { - const char *q; - bool dot, found_dot = false; - - if (isempty(p)) - return false; - - for (dot = true, q = p; *q; q++) - if (*q == '.') { - if (dot) - return false; - - found_dot = dot = true; - } else { - bool good; - - good = - (*q >= 'a' && *q <= 'z') || - (*q >= 'A' && *q <= 'Z') || - (!dot && *q >= '0' && *q <= '9') || - *q == '_'; - - if (!good) - return false; - - dot = false; - } - - if (q - p > 255) - return false; - - if (dot) - return false; - - if (!found_dot) - return false; - - return true; -} - -bool service_name_is_valid(const char *p) { - const char *q; - bool dot, found_dot = false, unique; - - if (isempty(p)) - return false; - - unique = p[0] == ':'; - - for (dot = true, q = unique ? p+1 : p; *q; q++) - if (*q == '.') { - if (dot) - return false; - - found_dot = dot = true; - } else { - bool good; - - good = - (*q >= 'a' && *q <= 'z') || - (*q >= 'A' && *q <= 'Z') || - ((!dot || unique) && *q >= '0' && *q <= '9') || - *q == '_' || *q == '-'; - - if (!good) - return false; - - dot = false; - } - - if (q - p > 255) - return false; - - if (dot) - return false; - - if (!found_dot) - return false; - - return true; -} - -char* service_name_startswith(const char *a, const char *b) { - const char *p; - - if (!service_name_is_valid(a) || - !service_name_is_valid(b)) - return NULL; - - p = startswith(a, b); - if (!p) - return NULL; - - if (*p == 0) - return (char*) p; - - if (*p == '.') - return (char*) p + 1; - - return NULL; -} - -bool member_name_is_valid(const char *p) { - const char *q; - - if (isempty(p)) - return false; - - for (q = p; *q; q++) { - bool good; - - good = - (*q >= 'a' && *q <= 'z') || - (*q >= 'A' && *q <= 'Z') || - (*q >= '0' && *q <= '9') || - *q == '_'; - - if (!good) - return false; - } - - if (q - p > 255) - return false; - - return true; -} - -/* - * Complex pattern match - * This checks whether @a is a 'complex-prefix' of @b, or @b is a - * 'complex-prefix' of @a, based on strings that consist of labels with @c as - * spearator. This function returns true if: - * - both strings are equal - * - either is a prefix of the other and ends with @c - * The second rule makes sure that either string needs to be fully included in - * the other, and the string which is considered the prefix needs to end with a - * separator. - */ -static bool complex_pattern_check(char c, const char *a, const char *b) { - bool separator = false; - - if (!a && !b) - return true; - - if (!a || !b) - return false; - - for (;;) { - if (*a != *b) - return (separator && (*a == 0 || *b == 0)); - - if (*a == 0) - return true; - - separator = *a == c; - - a++, b++; - } -} - -bool namespace_complex_pattern(const char *pattern, const char *value) { - return complex_pattern_check('.', pattern, value); -} - -bool path_complex_pattern(const char *pattern, const char *value) { - return complex_pattern_check('/', pattern, value); -} - -/* - * Simple pattern match - * This checks whether @a is a 'simple-prefix' of @b, based on strings that - * consist of labels with @c as separator. This function returns true, if: - * - if @a and @b are equal - * - if @a is a prefix of @b, and the first following character in @b (or the - * last character in @a) is @c - * The second rule basically makes sure that if @a is a prefix of @b, then @b - * must follow with a new label separated by @c. It cannot extend the label. - */ -static bool simple_pattern_check(char c, const char *a, const char *b) { - bool separator = false; - - if (!a && !b) - return true; - - if (!a || !b) - return false; - - for (;;) { - if (*a != *b) - return *a == 0 && (*b == c || separator); - - if (*a == 0) - return true; - - separator = *a == c; - - a++, b++; - } -} - -bool namespace_simple_pattern(const char *pattern, const char *value) { - return simple_pattern_check('.', pattern, value); -} - -bool path_simple_pattern(const char *pattern, const char *value) { - return simple_pattern_check('/', pattern, value); -} - -int bus_message_type_from_string(const char *s, uint8_t *u) { - if (streq(s, "signal")) - *u = SD_BUS_MESSAGE_SIGNAL; - else if (streq(s, "method_call")) - *u = SD_BUS_MESSAGE_METHOD_CALL; - else if (streq(s, "error")) - *u = SD_BUS_MESSAGE_METHOD_ERROR; - else if (streq(s, "method_return")) - *u = SD_BUS_MESSAGE_METHOD_RETURN; - else - return -EINVAL; - - return 0; -} - -const char *bus_message_type_to_string(uint8_t u) { - if (u == SD_BUS_MESSAGE_SIGNAL) - return "signal"; - else if (u == SD_BUS_MESSAGE_METHOD_CALL) - return "method_call"; - else if (u == SD_BUS_MESSAGE_METHOD_ERROR) - return "error"; - else if (u == SD_BUS_MESSAGE_METHOD_RETURN) - return "method_return"; - else - return NULL; -} - -char *bus_address_escape(const char *v) { - const char *a; - char *r, *b; - - r = new(char, strlen(v)*3+1); - if (!r) - return NULL; - - for (a = v, b = r; *a; a++) { - - if ((*a >= '0' && *a <= '9') || - (*a >= 'a' && *a <= 'z') || - (*a >= 'A' && *a <= 'Z') || - strchr("_-/.", *a)) - *(b++) = *a; - else { - *(b++) = '%'; - *(b++) = hexchar(*a >> 4); - *(b++) = hexchar(*a & 0xF); - } - } - - *b = 0; - return r; -} - -int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error) { - assert(m); - - if (r < 0) { - if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) - sd_bus_reply_method_errno(m, r, error); - - } else if (sd_bus_error_is_set(error)) { - if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) - sd_bus_reply_method_error(m, error); - } else - return r; - - log_debug("Failed to process message [type=%s sender=%s path=%s interface=%s member=%s signature=%s]: %s", - bus_message_type_to_string(m->header->type), - strna(m->sender), - strna(m->path), - strna(m->interface), - strna(m->member), - strna(m->root_container.signature), - bus_error_message(error, r)); - - return 1; -} diff --git a/src/libsystemd/sd-bus/bus-internal.h b/src/libsystemd/sd-bus/bus-internal.h deleted file mode 100644 index 216d9f62bc..0000000000 --- a/src/libsystemd/sd-bus/bus-internal.h +++ /dev/null @@ -1,399 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <pthread.h> -#include <sys/socket.h> - -#include "sd-bus.h" - -#include "bus-error.h" -#include "bus-kernel.h" -#include "bus-match.h" -#include "hashmap.h" -#include "kdbus.h" -#include "list.h" -#include "prioq.h" -#include "refcnt.h" -#include "socket-util.h" -#include "util.h" - -struct reply_callback { - sd_bus_message_handler_t callback; - usec_t timeout; - uint64_t cookie; - unsigned prioq_idx; -}; - -struct filter_callback { - sd_bus_message_handler_t callback; - - unsigned last_iteration; - - LIST_FIELDS(struct filter_callback, callbacks); -}; - -struct match_callback { - sd_bus_message_handler_t callback; - - uint64_t cookie; - unsigned last_iteration; - - char *match_string; - - struct bus_match_node *match_node; -}; - -struct node { - char *path; - struct node *parent; - LIST_HEAD(struct node, child); - LIST_FIELDS(struct node, siblings); - - LIST_HEAD(struct node_callback, callbacks); - LIST_HEAD(struct node_vtable, vtables); - LIST_HEAD(struct node_enumerator, enumerators); - LIST_HEAD(struct node_object_manager, object_managers); -}; - -struct node_callback { - struct node *node; - - bool is_fallback; - sd_bus_message_handler_t callback; - - unsigned last_iteration; - - LIST_FIELDS(struct node_callback, callbacks); -}; - -struct node_enumerator { - struct node *node; - - sd_bus_node_enumerator_t callback; - - unsigned last_iteration; - - LIST_FIELDS(struct node_enumerator, enumerators); -}; - -struct node_object_manager { - struct node *node; - - LIST_FIELDS(struct node_object_manager, object_managers); -}; - -struct node_vtable { - struct node *node; - - char *interface; - bool is_fallback; - const sd_bus_vtable *vtable; - sd_bus_object_find_t find; - - unsigned last_iteration; - - LIST_FIELDS(struct node_vtable, vtables); -}; - -struct vtable_member { - const char *path; - const char *interface; - const char *member; - struct node_vtable *parent; - unsigned last_iteration; - const sd_bus_vtable *vtable; -}; - -typedef enum BusSlotType { - BUS_REPLY_CALLBACK, - BUS_FILTER_CALLBACK, - BUS_MATCH_CALLBACK, - BUS_NODE_CALLBACK, - BUS_NODE_ENUMERATOR, - BUS_NODE_VTABLE, - BUS_NODE_OBJECT_MANAGER, - _BUS_SLOT_INVALID = -1, -} BusSlotType; - -struct sd_bus_slot { - unsigned n_ref; - sd_bus *bus; - void *userdata; - BusSlotType type:5; - bool floating:1; - bool match_added:1; - char *description; - - LIST_FIELDS(sd_bus_slot, slots); - - union { - struct reply_callback reply_callback; - struct filter_callback filter_callback; - struct match_callback match_callback; - struct node_callback node_callback; - struct node_enumerator node_enumerator; - struct node_object_manager node_object_manager; - struct node_vtable node_vtable; - }; -}; - -enum bus_state { - BUS_UNSET, - BUS_OPENING, - BUS_AUTHENTICATING, - BUS_HELLO, - BUS_RUNNING, - BUS_CLOSING, - BUS_CLOSED -}; - -static inline bool BUS_IS_OPEN(enum bus_state state) { - return state > BUS_UNSET && state < BUS_CLOSING; -} - -enum bus_auth { - _BUS_AUTH_INVALID, - BUS_AUTH_EXTERNAL, - BUS_AUTH_ANONYMOUS -}; - -struct sd_bus { - /* We use atomic ref counting here since sd_bus_message - objects retain references to their originating sd_bus but - we want to allow them to be processed in a different - thread. We won't provide full thread safety, but only the - bare minimum that makes it possible to use sd_bus and - sd_bus_message objects independently and on different - threads as long as each object is used only once at the - same time. */ - RefCount n_ref; - - enum bus_state state; - int input_fd, output_fd; - int message_version; - int message_endian; - - bool is_kernel:1; - bool can_fds:1; - bool bus_client:1; - bool ucred_valid:1; - bool is_server:1; - bool anonymous_auth:1; - bool prefer_readv:1; - bool prefer_writev:1; - bool match_callbacks_modified:1; - bool filter_callbacks_modified:1; - bool nodes_modified:1; - bool trusted:1; - bool fake_creds_valid:1; - bool fake_pids_valid:1; - bool manual_peer_interface:1; - bool is_system:1; - bool is_user:1; - bool allow_interactive_authorization:1; - - int use_memfd; - - void *rbuffer; - size_t rbuffer_size; - - sd_bus_message **rqueue; - unsigned rqueue_size; - size_t rqueue_allocated; - - sd_bus_message **wqueue; - unsigned wqueue_size; - size_t windex; - size_t wqueue_allocated; - - uint64_t cookie; - - char *unique_name; - uint64_t unique_id; - - struct bus_match_node match_callbacks; - Prioq *reply_callbacks_prioq; - OrderedHashmap *reply_callbacks; - LIST_HEAD(struct filter_callback, filter_callbacks); - - Hashmap *nodes; - Hashmap *vtable_methods; - Hashmap *vtable_properties; - - union sockaddr_union sockaddr; - socklen_t sockaddr_size; - - char *kernel; - char *machine; - pid_t nspid; - - sd_id128_t server_id; - - char *address; - unsigned address_index; - - int last_connect_error; - - enum bus_auth auth; - size_t auth_rbegin; - struct iovec auth_iovec[3]; - unsigned auth_index; - char *auth_buffer; - usec_t auth_timeout; - - struct ucred ucred; - char *label; - - uint64_t creds_mask; - - int *fds; - unsigned n_fds; - - char *exec_path; - char **exec_argv; - - unsigned iteration_counter; - - void *kdbus_buffer; - - /* We do locking around the memfd cache, since we want to - * allow people to process a sd_bus_message in a different - * thread then it was generated on and free it there. Since - * adding something to the memfd cache might happen when a - * message is released, we hence need to protect this bit with - * a mutex. */ - pthread_mutex_t memfd_cache_mutex; - struct memfd_cache memfd_cache[MEMFD_CACHE_MAX]; - unsigned n_memfd_cache; - - pid_t original_pid; - - uint64_t hello_flags; - uint64_t attach_flags; - - uint64_t match_cookie; - - sd_event_source *input_io_event_source; - sd_event_source *output_io_event_source; - sd_event_source *time_event_source; - sd_event_source *quit_event_source; - sd_event *event; - int event_priority; - - sd_bus_message *current_message; - sd_bus_slot *current_slot; - sd_bus_message_handler_t current_handler; - void *current_userdata; - - sd_bus **default_bus_ptr; - pid_t tid; - - struct kdbus_creds fake_creds; - struct kdbus_pids fake_pids; - char *fake_label; - - char *cgroup_root; - - char *description; - - size_t bloom_size; - unsigned bloom_n_hash; - - sd_bus_track *track_queue; - - LIST_HEAD(sd_bus_slot, slots); -}; - -#define BUS_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC)) - -#define BUS_WQUEUE_MAX 1024 -#define BUS_RQUEUE_MAX 64*1024 - -#define BUS_MESSAGE_SIZE_MAX (64*1024*1024) -#define BUS_AUTH_SIZE_MAX (64*1024) - -#define BUS_CONTAINER_DEPTH 128 - -/* Defined by the specification as maximum size of an array in - * bytes */ -#define BUS_ARRAY_MAX_SIZE 67108864 - -#define BUS_FDS_MAX 1024 - -#define BUS_EXEC_ARGV_MAX 256 - -bool interface_name_is_valid(const char *p) _pure_; -bool service_name_is_valid(const char *p) _pure_; -char* service_name_startswith(const char *a, const char *b); -bool member_name_is_valid(const char *p) _pure_; -bool object_path_is_valid(const char *p) _pure_; -char *object_path_startswith(const char *a, const char *b) _pure_; - -bool namespace_complex_pattern(const char *pattern, const char *value) _pure_; -bool path_complex_pattern(const char *pattern, const char *value) _pure_; - -bool namespace_simple_pattern(const char *pattern, const char *value) _pure_; -bool path_simple_pattern(const char *pattern, const char *value) _pure_; - -int bus_message_type_from_string(const char *s, uint8_t *u) _pure_; -const char *bus_message_type_to_string(uint8_t u) _pure_; - -#define error_name_is_valid interface_name_is_valid - -int bus_ensure_running(sd_bus *bus); -int bus_start_running(sd_bus *bus); -int bus_next_address(sd_bus *bus); - -int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m); - -int bus_rqueue_make_room(sd_bus *bus); - -bool bus_pid_changed(sd_bus *bus); - -char *bus_address_escape(const char *v); - -#define OBJECT_PATH_FOREACH_PREFIX(prefix, path) \ - for (char *_slash = ({ strcpy((prefix), (path)); streq((prefix), "/") ? NULL : strrchr((prefix), '/'); }) ; \ - _slash && !(_slash[(_slash) == (prefix)] = 0); \ - _slash = streq((prefix), "/") ? NULL : strrchr((prefix), '/')) - -/* If we are invoking callbacks of a bus object, ensure unreffing the - * bus from the callback doesn't destroy the object we are working - * on */ -#define BUS_DONT_DESTROY(bus) \ - _cleanup_(sd_bus_unrefp) _unused_ sd_bus *_dont_destroy_##bus = sd_bus_ref(bus) - -int bus_set_address_system(sd_bus *bus); -int bus_set_address_user(sd_bus *bus); -int bus_set_address_system_remote(sd_bus *b, const char *host); -int bus_set_address_system_machine(sd_bus *b, const char *machine); - -int bus_remove_match_by_string(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata); - -int bus_get_root_path(sd_bus *bus); - -int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error); - -#define bus_assert_return(expr, r, error) \ - do { \ - if (!assert_log(expr, #expr)) \ - return sd_bus_error_set_errno(error, r); \ - } while (false) diff --git a/src/libsystemd/sd-bus/bus-introspect.c b/src/libsystemd/sd-bus/bus-introspect.c deleted file mode 100644 index 8f93edb8da..0000000000 --- a/src/libsystemd/sd-bus/bus-introspect.c +++ /dev/null @@ -1,212 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-internal.h" -#include "bus-introspect.h" -#include "bus-protocol.h" -#include "bus-signature.h" -#include "fd-util.h" -#include "fileio.h" -#include "string-util.h" -#include "util.h" - -int introspect_begin(struct introspect *i, bool trusted) { - assert(i); - - zero(*i); - i->trusted = trusted; - - i->f = open_memstream(&i->introspection, &i->size); - if (!i->f) - return -ENOMEM; - - fputs(BUS_INTROSPECT_DOCTYPE - "<node>\n", i->f); - - return 0; -} - -int introspect_write_default_interfaces(struct introspect *i, bool object_manager) { - assert(i); - - fputs(BUS_INTROSPECT_INTERFACE_PEER - BUS_INTROSPECT_INTERFACE_INTROSPECTABLE - BUS_INTROSPECT_INTERFACE_PROPERTIES, i->f); - - if (object_manager) - fputs(BUS_INTROSPECT_INTERFACE_OBJECT_MANAGER, i->f); - - return 0; -} - -int introspect_write_child_nodes(struct introspect *i, Set *s, const char *prefix) { - char *node; - - assert(i); - assert(prefix); - - while ((node = set_steal_first(s))) { - const char *e; - - e = object_path_startswith(node, prefix); - if (e && e[0]) - fprintf(i->f, " <node name=\"%s\"/>\n", e); - - free(node); - } - - return 0; -} - -static void introspect_write_flags(struct introspect *i, int type, int flags) { - if (flags & SD_BUS_VTABLE_DEPRECATED) - fputs(" <annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>\n", i->f); - - if (type == _SD_BUS_VTABLE_METHOD && (flags & SD_BUS_VTABLE_METHOD_NO_REPLY)) - fputs(" <annotation name=\"org.freedesktop.DBus.Method.NoReply\" value=\"true\"/>\n", i->f); - - if (type == _SD_BUS_VTABLE_PROPERTY || type == _SD_BUS_VTABLE_WRITABLE_PROPERTY) { - if (flags & SD_BUS_VTABLE_PROPERTY_EXPLICIT) - fputs(" <annotation name=\"org.freedesktop.systemd1.Explicit\" value=\"true\"/>\n", i->f); - - if (flags & SD_BUS_VTABLE_PROPERTY_CONST) - fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"const\"/>\n", i->f); - else if (flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) - fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"invalidates\"/>\n", i->f); - else if (!(flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) - fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"false\"/>\n", i->f); - } - - if (!i->trusted && - (type == _SD_BUS_VTABLE_METHOD || type == _SD_BUS_VTABLE_WRITABLE_PROPERTY) && - !(flags & SD_BUS_VTABLE_UNPRIVILEGED)) - fputs(" <annotation name=\"org.freedesktop.systemd1.Privileged\" value=\"true\"/>\n", i->f); -} - -static int introspect_write_arguments(struct introspect *i, const char *signature, const char *direction) { - int r; - - for (;;) { - size_t l; - - if (!*signature) - return 0; - - r = signature_element_length(signature, &l); - if (r < 0) - return r; - - fprintf(i->f, " <arg type=\"%.*s\"", (int) l, signature); - - if (direction) - fprintf(i->f, " direction=\"%s\"/>\n", direction); - else - fputs("/>\n", i->f); - - signature += l; - } -} - -int introspect_write_interface(struct introspect *i, const sd_bus_vtable *v) { - assert(i); - assert(v); - - for (; v->type != _SD_BUS_VTABLE_END; v++) { - - /* Ignore methods, signals and properties that are - * marked "hidden", but do show the interface - * itself */ - - if (v->type != _SD_BUS_VTABLE_START && (v->flags & SD_BUS_VTABLE_HIDDEN)) - continue; - - switch (v->type) { - - case _SD_BUS_VTABLE_START: - if (v->flags & SD_BUS_VTABLE_DEPRECATED) - fputs(" <annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>\n", i->f); - break; - - case _SD_BUS_VTABLE_METHOD: - fprintf(i->f, " <method name=\"%s\">\n", v->x.method.member); - introspect_write_arguments(i, strempty(v->x.method.signature), "in"); - introspect_write_arguments(i, strempty(v->x.method.result), "out"); - introspect_write_flags(i, v->type, v->flags); - fputs(" </method>\n", i->f); - break; - - case _SD_BUS_VTABLE_PROPERTY: - case _SD_BUS_VTABLE_WRITABLE_PROPERTY: - fprintf(i->f, " <property name=\"%s\" type=\"%s\" access=\"%s\">\n", - v->x.property.member, - v->x.property.signature, - v->type == _SD_BUS_VTABLE_WRITABLE_PROPERTY ? "readwrite" : "read"); - introspect_write_flags(i, v->type, v->flags); - fputs(" </property>\n", i->f); - break; - - case _SD_BUS_VTABLE_SIGNAL: - fprintf(i->f, " <signal name=\"%s\">\n", v->x.signal.member); - introspect_write_arguments(i, strempty(v->x.signal.signature), NULL); - introspect_write_flags(i, v->type, v->flags); - fputs(" </signal>\n", i->f); - break; - } - - } - - return 0; -} - -int introspect_finish(struct introspect *i, sd_bus *bus, sd_bus_message *m, sd_bus_message **reply) { - sd_bus_message *q; - int r; - - assert(i); - assert(m); - assert(reply); - - fputs("</node>\n", i->f); - - r = fflush_and_check(i->f); - if (r < 0) - return r; - - r = sd_bus_message_new_method_return(m, &q); - if (r < 0) - return r; - - r = sd_bus_message_append(q, "s", i->introspection); - if (r < 0) { - sd_bus_message_unref(q); - return r; - } - - *reply = q; - return 0; -} - -void introspect_free(struct introspect *i) { - assert(i); - - safe_fclose(i->f); - - free(i->introspection); - zero(*i); -} diff --git a/src/libsystemd/sd-bus/bus-introspect.h b/src/libsystemd/sd-bus/bus-introspect.h deleted file mode 100644 index 8e2f3800ca..0000000000 --- a/src/libsystemd/sd-bus/bus-introspect.h +++ /dev/null @@ -1,40 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdio.h> - -#include "sd-bus.h" - -#include "set.h" - -struct introspect { - FILE *f; - char *introspection; - size_t size; - bool trusted; -}; - -int introspect_begin(struct introspect *i, bool trusted); -int introspect_write_default_interfaces(struct introspect *i, bool object_manager); -int introspect_write_child_nodes(struct introspect *i, Set *s, const char *prefix); -int introspect_write_interface(struct introspect *i, const sd_bus_vtable *v); -int introspect_finish(struct introspect *i, sd_bus *bus, sd_bus_message *m, sd_bus_message **reply); -void introspect_free(struct introspect *i); diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c deleted file mode 100644 index 0896eeb177..0000000000 --- a/src/libsystemd/sd-bus/bus-kernel.c +++ /dev/null @@ -1,1826 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#ifdef HAVE_VALGRIND_MEMCHECK_H -#include <valgrind/memcheck.h> -#endif - -#include <fcntl.h> -#include <malloc.h> -#include <sys/mman.h> -#include <sys/prctl.h> - -/* When we include libgen.h because we need dirname() we immediately - * undefine basename() since libgen.h defines it as a macro to the POSIX - * version which is really broken. We prefer GNU basename(). */ -#include <libgen.h> -#undef basename - -#include "alloc-util.h" -#include "bus-bloom.h" -#include "bus-internal.h" -#include "bus-kernel.h" -#include "bus-label.h" -#include "bus-message.h" -#include "bus-util.h" -#include "capability-util.h" -#include "fd-util.h" -#include "fileio.h" -#include "formats-util.h" -#include "memfd-util.h" -#include "parse-util.h" -#include "stdio-util.h" -#include "string-util.h" -#include "strv.h" -#include "user-util.h" -#include "util.h" - -#define UNIQUE_NAME_MAX (3+DECIMAL_STR_MAX(uint64_t)) - -int bus_kernel_parse_unique_name(const char *s, uint64_t *id) { - int r; - - assert(s); - assert(id); - - if (!startswith(s, ":1.")) - return 0; - - r = safe_atou64(s + 3, id); - if (r < 0) - return r; - - return 1; -} - -static void append_payload_vec(struct kdbus_item **d, const void *p, size_t sz) { - assert(d); - assert(sz > 0); - - *d = ALIGN8_PTR(*d); - - /* Note that p can be NULL, which encodes a region full of - * zeroes, which is useful to optimize certain padding - * conditions */ - - (*d)->size = offsetof(struct kdbus_item, vec) + sizeof(struct kdbus_vec); - (*d)->type = KDBUS_ITEM_PAYLOAD_VEC; - (*d)->vec.address = PTR_TO_UINT64(p); - (*d)->vec.size = sz; - - *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size); -} - -static void append_payload_memfd(struct kdbus_item **d, int memfd, size_t start, size_t sz) { - assert(d); - assert(memfd >= 0); - assert(sz > 0); - - *d = ALIGN8_PTR(*d); - (*d)->size = offsetof(struct kdbus_item, memfd) + sizeof(struct kdbus_memfd); - (*d)->type = KDBUS_ITEM_PAYLOAD_MEMFD; - (*d)->memfd.fd = memfd; - (*d)->memfd.start = start; - (*d)->memfd.size = sz; - - *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size); -} - -static void append_destination(struct kdbus_item **d, const char *s, size_t length) { - assert(d); - assert(s); - - *d = ALIGN8_PTR(*d); - - (*d)->size = offsetof(struct kdbus_item, str) + length + 1; - (*d)->type = KDBUS_ITEM_DST_NAME; - memcpy((*d)->str, s, length + 1); - - *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size); -} - -static struct kdbus_bloom_filter *append_bloom(struct kdbus_item **d, size_t length) { - struct kdbus_item *i; - - assert(d); - - i = ALIGN8_PTR(*d); - - i->size = offsetof(struct kdbus_item, bloom_filter) + - offsetof(struct kdbus_bloom_filter, data) + - length; - i->type = KDBUS_ITEM_BLOOM_FILTER; - - *d = (struct kdbus_item *) ((uint8_t*) i + i->size); - - return &i->bloom_filter; -} - -static void append_fds(struct kdbus_item **d, const int fds[], unsigned n_fds) { - assert(d); - assert(fds); - assert(n_fds > 0); - - *d = ALIGN8_PTR(*d); - (*d)->size = offsetof(struct kdbus_item, fds) + sizeof(int) * n_fds; - (*d)->type = KDBUS_ITEM_FDS; - memcpy((*d)->fds, fds, sizeof(int) * n_fds); - - *d = (struct kdbus_item *) ((uint8_t*) *d + (*d)->size); -} - -static void add_bloom_arg(void *data, size_t size, unsigned n_hash, unsigned i, const char *t) { - char buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")]; - char *e; - - assert(data); - assert(size > 0); - assert(i < 64); - assert(t); - - e = stpcpy(buf, "arg"); - if (i < 10) - *(e++) = '0' + (char) i; - else { - *(e++) = '0' + (char) (i / 10); - *(e++) = '0' + (char) (i % 10); - } - - *e = 0; - bloom_add_pair(data, size, n_hash, buf, t); - - strcpy(e, "-dot-prefix"); - bloom_add_prefixes(data, size, n_hash, buf, t, '.'); - strcpy(e, "-slash-prefix"); - bloom_add_prefixes(data, size, n_hash, buf, t, '/'); -} - -static void add_bloom_arg_has(void *data, size_t size, unsigned n_hash, unsigned i, const char *t) { - char buf[sizeof("arg")-1 + 2 + sizeof("-has")]; - char *e; - - assert(data); - assert(size > 0); - assert(i < 64); - assert(t); - - e = stpcpy(buf, "arg"); - if (i < 10) - *(e++) = '0' + (char) i; - else { - *(e++) = '0' + (char) (i / 10); - *(e++) = '0' + (char) (i % 10); - } - - strcpy(e, "-has"); - bloom_add_pair(data, size, n_hash, buf, t); -} - -static int bus_message_setup_bloom(sd_bus_message *m, struct kdbus_bloom_filter *bloom) { - void *data; - unsigned i; - int r; - - assert(m); - assert(bloom); - - data = bloom->data; - memzero(data, m->bus->bloom_size); - bloom->generation = 0; - - bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "message-type", bus_message_type_to_string(m->header->type)); - - if (m->interface) - bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "interface", m->interface); - if (m->member) - bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "member", m->member); - if (m->path) { - bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path", m->path); - bloom_add_pair(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path-slash-prefix", m->path); - bloom_add_prefixes(data, m->bus->bloom_size, m->bus->bloom_n_hash, "path-slash-prefix", m->path, '/'); - } - - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - for (i = 0; i < 64; i++) { - const char *t, *contents; - char type; - - r = sd_bus_message_peek_type(m, &type, &contents); - if (r < 0) - return r; - - if (IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, SD_BUS_TYPE_SIGNATURE)) { - - /* The bloom filter includes simple strings of any kind */ - r = sd_bus_message_read_basic(m, type, &t); - if (r < 0) - return r; - - add_bloom_arg(data, m->bus->bloom_size, m->bus->bloom_n_hash, i, t); - } - - if (type == SD_BUS_TYPE_ARRAY && STR_IN_SET(contents, "s", "o", "g")) { - - /* As well as array of simple strings of any kinds */ - r = sd_bus_message_enter_container(m, type, contents); - if (r < 0) - return r; - - while ((r = sd_bus_message_read_basic(m, contents[0], &t)) > 0) - add_bloom_arg_has(data, m->bus->bloom_size, m->bus->bloom_n_hash, i, t); - if (r < 0) - return r; - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - - } else - /* Stop adding to bloom filter as soon as we - * run into the first argument we cannot add - * to it. */ - break; - } - - return 0; -} - -static int bus_message_setup_kmsg(sd_bus *b, sd_bus_message *m) { - struct bus_body_part *part; - struct kdbus_item *d; - const char *destination; - bool well_known = false; - uint64_t dst_id; - size_t sz, dl; - unsigned i; - int r; - - assert(b); - assert(m); - assert(m->sealed); - - /* We put this together only once, if this message is reused - * we reuse the earlier-built version */ - if (m->kdbus) - return 0; - - destination = m->destination ?: m->destination_ptr; - - if (destination) { - r = bus_kernel_parse_unique_name(destination, &dst_id); - if (r < 0) - return r; - if (r == 0) { - well_known = true; - - /* verify_destination_id will usually be 0, which makes the kernel - * driver only look at the provided well-known name. Otherwise, - * the kernel will make sure the provided destination id matches - * the owner of the provided well-known-name, and fail if they - * differ. Currently, this is only needed for bus-proxyd. */ - dst_id = m->verify_destination_id; - } - } else - dst_id = KDBUS_DST_ID_BROADCAST; - - sz = offsetof(struct kdbus_msg, items); - - /* Add in fixed header, fields header and payload */ - sz += (1 + m->n_body_parts) * ALIGN8(offsetof(struct kdbus_item, vec) + - MAX(sizeof(struct kdbus_vec), - sizeof(struct kdbus_memfd))); - - /* Add space for bloom filter */ - sz += ALIGN8(offsetof(struct kdbus_item, bloom_filter) + - offsetof(struct kdbus_bloom_filter, data) + - m->bus->bloom_size); - - /* Add in well-known destination header */ - if (well_known) { - dl = strlen(destination); - sz += ALIGN8(offsetof(struct kdbus_item, str) + dl + 1); - } - - /* Add space for unix fds */ - if (m->n_fds > 0) - sz += ALIGN8(offsetof(struct kdbus_item, fds) + sizeof(int)*m->n_fds); - - m->kdbus = memalign(8, sz); - if (!m->kdbus) { - r = -ENOMEM; - goto fail; - } - - m->free_kdbus = true; - memzero(m->kdbus, sz); - - m->kdbus->flags = - ((m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_EXPECT_REPLY) | - ((m->header->flags & BUS_MESSAGE_NO_AUTO_START) ? KDBUS_MSG_NO_AUTO_START : 0) | - ((m->header->type == SD_BUS_MESSAGE_SIGNAL) ? KDBUS_MSG_SIGNAL : 0); - - m->kdbus->dst_id = dst_id; - m->kdbus->payload_type = KDBUS_PAYLOAD_DBUS; - m->kdbus->cookie = m->header->dbus2.cookie; - m->kdbus->priority = m->priority; - - if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) - m->kdbus->cookie_reply = m->reply_cookie; - else { - struct timespec now; - - assert_se(clock_gettime(CLOCK_MONOTONIC_COARSE, &now) == 0); - m->kdbus->timeout_ns = now.tv_sec * NSEC_PER_SEC + now.tv_nsec + - m->timeout * NSEC_PER_USEC; - } - - d = m->kdbus->items; - - if (well_known) - append_destination(&d, destination, dl); - - append_payload_vec(&d, m->header, BUS_MESSAGE_BODY_BEGIN(m)); - - MESSAGE_FOREACH_PART(part, i, m) { - if (part->is_zero) { - /* If this is padding then simply send a - * vector with a NULL data pointer which the - * kernel will just pass through. This is the - * most efficient way to encode zeroes */ - - append_payload_vec(&d, NULL, part->size); - continue; - } - - if (part->memfd >= 0 && part->sealed && destination) { - /* Try to send a memfd, if the part is - * sealed and this is not a broadcast. Since we can only */ - - append_payload_memfd(&d, part->memfd, part->memfd_offset, part->size); - continue; - } - - /* Otherwise, let's send a vector to the actual data. - * For that, we need to map it first. */ - r = bus_body_part_map(part); - if (r < 0) - goto fail; - - append_payload_vec(&d, part->data, part->size); - } - - if (m->header->type == SD_BUS_MESSAGE_SIGNAL) { - struct kdbus_bloom_filter *bloom; - - bloom = append_bloom(&d, m->bus->bloom_size); - r = bus_message_setup_bloom(m, bloom); - if (r < 0) - goto fail; - } - - if (m->n_fds > 0) - append_fds(&d, m->fds, m->n_fds); - - m->kdbus->size = (uint8_t*) d - (uint8_t*) m->kdbus; - assert(m->kdbus->size <= sz); - - return 0; - -fail: - m->poisoned = true; - return r; -} - -static void unset_memfds(struct sd_bus_message *m) { - struct bus_body_part *part; - unsigned i; - - assert(m); - - /* Make sure the memfds are not freed twice */ - MESSAGE_FOREACH_PART(part, i, m) - if (part->memfd >= 0) - part->memfd = -1; -} - -static void message_set_timestamp(sd_bus *bus, sd_bus_message *m, const struct kdbus_timestamp *ts) { - assert(bus); - assert(m); - - if (!ts) - return; - - if (!(bus->attach_flags & KDBUS_ATTACH_TIMESTAMP)) - return; - - m->realtime = ts->realtime_ns / NSEC_PER_USEC; - m->monotonic = ts->monotonic_ns / NSEC_PER_USEC; - m->seqnum = ts->seqnum; -} - -static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) { - sd_bus_message *m = NULL; - struct kdbus_item *d; - unsigned n_fds = 0; - _cleanup_free_ int *fds = NULL; - struct bus_header *header = NULL; - void *footer = NULL; - size_t header_size = 0, footer_size = 0; - size_t n_bytes = 0, idx = 0; - const char *destination = NULL, *seclabel = NULL; - bool last_was_memfd = false; - int r; - - assert(bus); - assert(k); - assert(k->payload_type == KDBUS_PAYLOAD_DBUS); - - KDBUS_ITEM_FOREACH(d, k, items) { - size_t l; - - l = d->size - offsetof(struct kdbus_item, data); - - switch (d->type) { - - case KDBUS_ITEM_PAYLOAD_OFF: - if (!header) { - header = (struct bus_header*)((uint8_t*) k + d->vec.offset); - header_size = d->vec.size; - } - - footer = (uint8_t*) k + d->vec.offset; - footer_size = d->vec.size; - - n_bytes += d->vec.size; - last_was_memfd = false; - break; - - case KDBUS_ITEM_PAYLOAD_MEMFD: - if (!header) /* memfd cannot be first part */ - return -EBADMSG; - - n_bytes += d->memfd.size; - last_was_memfd = true; - break; - - case KDBUS_ITEM_FDS: { - int *f; - unsigned j; - - j = l / sizeof(int); - f = realloc(fds, sizeof(int) * (n_fds + j)); - if (!f) - return -ENOMEM; - - fds = f; - memcpy(fds + n_fds, d->fds, sizeof(int) * j); - n_fds += j; - break; - } - - case KDBUS_ITEM_SECLABEL: - seclabel = d->str; - break; - } - } - - if (last_was_memfd) /* memfd cannot be last part */ - return -EBADMSG; - - if (!header) - return -EBADMSG; - - if (header_size < sizeof(struct bus_header)) - return -EBADMSG; - - /* on kdbus we only speak native endian gvariant, never dbus1 - * marshalling or reverse endian */ - if (header->version != 2 || - header->endian != BUS_NATIVE_ENDIAN) - return -EPROTOTYPE; - - r = bus_message_from_header( - bus, - header, header_size, - footer, footer_size, - n_bytes, - fds, n_fds, - seclabel, 0, &m); - if (r < 0) - return r; - - /* The well-known names list is different from the other - credentials. If we asked for it, but nothing is there, this - means that the list of well-known names is simply empty, not - that we lack any data */ - - m->creds.mask |= (SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES) & bus->creds_mask; - - KDBUS_ITEM_FOREACH(d, k, items) { - size_t l; - - l = d->size - offsetof(struct kdbus_item, data); - - switch (d->type) { - - case KDBUS_ITEM_PAYLOAD_OFF: { - size_t begin_body; - - begin_body = BUS_MESSAGE_BODY_BEGIN(m); - - if (idx + d->vec.size > begin_body) { - struct bus_body_part *part; - - /* Contains body material */ - - part = message_append_part(m); - if (!part) { - r = -ENOMEM; - goto fail; - } - - /* A -1 offset is NUL padding. */ - part->is_zero = d->vec.offset == ~0ULL; - - if (idx >= begin_body) { - if (!part->is_zero) - part->data = (uint8_t* )k + d->vec.offset; - part->size = d->vec.size; - } else { - if (!part->is_zero) - part->data = (uint8_t*) k + d->vec.offset + (begin_body - idx); - part->size = d->vec.size - (begin_body - idx); - } - - part->sealed = true; - } - - idx += d->vec.size; - break; - } - - case KDBUS_ITEM_PAYLOAD_MEMFD: { - struct bus_body_part *part; - - if (idx < BUS_MESSAGE_BODY_BEGIN(m)) { - r = -EBADMSG; - goto fail; - } - - part = message_append_part(m); - if (!part) { - r = -ENOMEM; - goto fail; - } - - part->memfd = d->memfd.fd; - part->memfd_offset = d->memfd.start; - part->size = d->memfd.size; - part->sealed = true; - - idx += d->memfd.size; - break; - } - - case KDBUS_ITEM_PIDS: - - /* The PID/TID might be missing, when the data - * is faked by a bus proxy and it lacks that - * information about the real client (since - * SO_PEERCRED is used for that). Also kernel - * namespacing might make some of this data - * unavailable when untranslatable. */ - - if (d->pids.pid > 0) { - m->creds.pid = (pid_t) d->pids.pid; - m->creds.mask |= SD_BUS_CREDS_PID & bus->creds_mask; - } - - if (d->pids.tid > 0) { - m->creds.tid = (pid_t) d->pids.tid; - m->creds.mask |= SD_BUS_CREDS_TID & bus->creds_mask; - } - - if (d->pids.ppid > 0) { - m->creds.ppid = (pid_t) d->pids.ppid; - m->creds.mask |= SD_BUS_CREDS_PPID & bus->creds_mask; - } else if (d->pids.pid == 1) { - m->creds.ppid = 0; - m->creds.mask |= SD_BUS_CREDS_PPID & bus->creds_mask; - } - - break; - - case KDBUS_ITEM_CREDS: - - /* EUID/SUID/FSUID/EGID/SGID/FSGID might be - * missing too (see above). */ - - if ((uid_t) d->creds.uid != UID_INVALID) { - m->creds.uid = (uid_t) d->creds.uid; - m->creds.mask |= SD_BUS_CREDS_UID & bus->creds_mask; - } - - if ((uid_t) d->creds.euid != UID_INVALID) { - m->creds.euid = (uid_t) d->creds.euid; - m->creds.mask |= SD_BUS_CREDS_EUID & bus->creds_mask; - } - - if ((uid_t) d->creds.suid != UID_INVALID) { - m->creds.suid = (uid_t) d->creds.suid; - m->creds.mask |= SD_BUS_CREDS_SUID & bus->creds_mask; - } - - if ((uid_t) d->creds.fsuid != UID_INVALID) { - m->creds.fsuid = (uid_t) d->creds.fsuid; - m->creds.mask |= SD_BUS_CREDS_FSUID & bus->creds_mask; - } - - if ((gid_t) d->creds.gid != GID_INVALID) { - m->creds.gid = (gid_t) d->creds.gid; - m->creds.mask |= SD_BUS_CREDS_GID & bus->creds_mask; - } - - if ((gid_t) d->creds.egid != GID_INVALID) { - m->creds.egid = (gid_t) d->creds.egid; - m->creds.mask |= SD_BUS_CREDS_EGID & bus->creds_mask; - } - - if ((gid_t) d->creds.sgid != GID_INVALID) { - m->creds.sgid = (gid_t) d->creds.sgid; - m->creds.mask |= SD_BUS_CREDS_SGID & bus->creds_mask; - } - - if ((gid_t) d->creds.fsgid != GID_INVALID) { - m->creds.fsgid = (gid_t) d->creds.fsgid; - m->creds.mask |= SD_BUS_CREDS_FSGID & bus->creds_mask; - } - - break; - - case KDBUS_ITEM_TIMESTAMP: - message_set_timestamp(bus, m, &d->timestamp); - break; - - case KDBUS_ITEM_PID_COMM: - m->creds.comm = d->str; - m->creds.mask |= SD_BUS_CREDS_COMM & bus->creds_mask; - break; - - case KDBUS_ITEM_TID_COMM: - m->creds.tid_comm = d->str; - m->creds.mask |= SD_BUS_CREDS_TID_COMM & bus->creds_mask; - break; - - case KDBUS_ITEM_EXE: - m->creds.exe = d->str; - m->creds.mask |= SD_BUS_CREDS_EXE & bus->creds_mask; - break; - - case KDBUS_ITEM_CMDLINE: - m->creds.cmdline = d->str; - m->creds.cmdline_size = l; - m->creds.mask |= SD_BUS_CREDS_CMDLINE & bus->creds_mask; - break; - - case KDBUS_ITEM_CGROUP: - m->creds.cgroup = d->str; - m->creds.mask |= (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID) & bus->creds_mask; - - r = bus_get_root_path(bus); - if (r < 0) - goto fail; - - m->creds.cgroup_root = bus->cgroup_root; - break; - - case KDBUS_ITEM_AUDIT: - m->creds.audit_session_id = (uint32_t) d->audit.sessionid; - m->creds.mask |= SD_BUS_CREDS_AUDIT_SESSION_ID & bus->creds_mask; - - m->creds.audit_login_uid = (uid_t) d->audit.loginuid; - m->creds.mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID & bus->creds_mask; - break; - - case KDBUS_ITEM_CAPS: - if (d->caps.last_cap != cap_last_cap() || - d->size - offsetof(struct kdbus_item, caps.caps) < DIV_ROUND_UP(d->caps.last_cap, 32U) * 4 * 4) { - r = -EBADMSG; - goto fail; - } - - m->creds.capability = d->caps.caps; - m->creds.mask |= (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS) & bus->creds_mask; - break; - - case KDBUS_ITEM_DST_NAME: - if (!service_name_is_valid(d->str)) { - r = -EBADMSG; - goto fail; - } - - destination = d->str; - break; - - case KDBUS_ITEM_OWNED_NAME: - if (!service_name_is_valid(d->name.name)) { - r = -EBADMSG; - goto fail; - } - - if (bus->creds_mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) { - char **wkn; - size_t n; - - /* We just extend the array here, but - * do not allocate the strings inside - * of it, instead we just point to our - * buffer directly. */ - n = strv_length(m->creds.well_known_names); - wkn = realloc(m->creds.well_known_names, (n + 2) * sizeof(char*)); - if (!wkn) { - r = -ENOMEM; - goto fail; - } - - wkn[n] = d->name.name; - wkn[n+1] = NULL; - m->creds.well_known_names = wkn; - - m->creds.mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES; - } - break; - - case KDBUS_ITEM_CONN_DESCRIPTION: - m->creds.description = d->str; - m->creds.mask |= SD_BUS_CREDS_DESCRIPTION & bus->creds_mask; - break; - - case KDBUS_ITEM_AUXGROUPS: - - if (bus->creds_mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) { - size_t i, n; - gid_t *g; - - n = (d->size - offsetof(struct kdbus_item, data64)) / sizeof(uint64_t); - g = new(gid_t, n); - if (!g) { - r = -ENOMEM; - goto fail; - } - - for (i = 0; i < n; i++) - g[i] = d->data64[i]; - - m->creds.supplementary_gids = g; - m->creds.n_supplementary_gids = n; - m->creds.mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS; - } - - break; - - case KDBUS_ITEM_FDS: - case KDBUS_ITEM_SECLABEL: - case KDBUS_ITEM_BLOOM_FILTER: - break; - - default: - log_debug("Got unknown field from kernel %llu", d->type); - } - } - - /* If we requested the list of well-known names to be appended - * and the sender had none no item for it will be - * attached. However, this does *not* mean that the kernel - * didn't want to provide this information to us. Hence, let's - * explicitly mark this information as available if it was - * requested. */ - m->creds.mask |= bus->creds_mask & SD_BUS_CREDS_WELL_KNOWN_NAMES; - - r = bus_message_parse_fields(m); - if (r < 0) - goto fail; - - /* Refuse messages if kdbus and dbus1 cookie doesn't match up */ - if ((uint64_t) m->header->dbus2.cookie != k->cookie) { - r = -EBADMSG; - goto fail; - } - - /* Refuse messages where the reply flag doesn't match up */ - if (!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) != !!(k->flags & KDBUS_MSG_EXPECT_REPLY)) { - r = -EBADMSG; - goto fail; - } - - /* Refuse reply messages where the reply cookie doesn't match up */ - if ((m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) && m->reply_cookie != k->cookie_reply) { - r = -EBADMSG; - goto fail; - } - - /* Refuse messages where the autostart flag doesn't match up */ - if (!(m->header->flags & BUS_MESSAGE_NO_AUTO_START) != !(k->flags & KDBUS_MSG_NO_AUTO_START)) { - r = -EBADMSG; - goto fail; - } - - /* Override information from the user header with data from the kernel */ - if (k->src_id == KDBUS_SRC_ID_KERNEL) - bus_message_set_sender_driver(bus, m); - else { - xsprintf(m->sender_buffer, ":1.%llu", - (unsigned long long)k->src_id); - m->sender = m->creds.unique_name = m->sender_buffer; - } - - if (destination) - m->destination = destination; - else if (k->dst_id == KDBUS_DST_ID_BROADCAST) - m->destination = NULL; - else if (k->dst_id == KDBUS_DST_ID_NAME) - m->destination = bus->unique_name; /* fill in unique name if the well-known name is missing */ - else { - xsprintf(m->destination_buffer, ":1.%llu", - (unsigned long long)k->dst_id); - m->destination = m->destination_buffer; - } - - /* We take possession of the kmsg struct now */ - m->kdbus = k; - m->release_kdbus = true; - m->free_fds = true; - fds = NULL; - - bus->rqueue[bus->rqueue_size++] = m; - - return 1; - -fail: - unset_memfds(m); - sd_bus_message_unref(m); - - return r; -} - -int bus_kernel_take_fd(sd_bus *b) { - struct kdbus_bloom_parameter *bloom = NULL; - struct kdbus_item *items, *item; - struct kdbus_cmd_hello *hello; - _cleanup_free_ char *g = NULL; - const char *name; - size_t l = 0, m = 0, sz; - int r; - - assert(b); - - if (b->is_server) - return -EINVAL; - - b->use_memfd = 1; - - if (b->description) { - g = bus_label_escape(b->description); - if (!g) - return -ENOMEM; - - name = g; - } else { - char pr[17] = {}; - - /* If no name is explicitly set, we'll include a hint - * indicating the library implementation, a hint which - * kind of bus this is and the thread name */ - - assert_se(prctl(PR_GET_NAME, (unsigned long) pr) >= 0); - - if (isempty(pr)) { - name = b->is_system ? "sd-system" : - b->is_user ? "sd-user" : "sd"; - } else { - _cleanup_free_ char *e = NULL; - - e = bus_label_escape(pr); - if (!e) - return -ENOMEM; - - g = strappend(b->is_system ? "sd-system-" : - b->is_user ? "sd-user-" : "sd-", - e); - if (!g) - return -ENOMEM; - - name = g; - } - - b->description = bus_label_unescape(name); - if (!b->description) - return -ENOMEM; - } - - m = strlen(name); - - sz = ALIGN8(offsetof(struct kdbus_cmd_hello, items)) + - ALIGN8(offsetof(struct kdbus_item, str) + m + 1); - - if (b->fake_creds_valid) - sz += ALIGN8(offsetof(struct kdbus_item, creds) + sizeof(struct kdbus_creds)); - - if (b->fake_pids_valid) - sz += ALIGN8(offsetof(struct kdbus_item, pids) + sizeof(struct kdbus_pids)); - - if (b->fake_label) { - l = strlen(b->fake_label); - sz += ALIGN8(offsetof(struct kdbus_item, str) + l + 1); - } - - hello = alloca0_align(sz, 8); - hello->size = sz; - hello->flags = b->hello_flags; - hello->attach_flags_send = _KDBUS_ATTACH_ANY; - hello->attach_flags_recv = b->attach_flags; - hello->pool_size = KDBUS_POOL_SIZE; - - item = hello->items; - - item->size = offsetof(struct kdbus_item, str) + m + 1; - item->type = KDBUS_ITEM_CONN_DESCRIPTION; - memcpy(item->str, name, m + 1); - item = KDBUS_ITEM_NEXT(item); - - if (b->fake_creds_valid) { - item->size = offsetof(struct kdbus_item, creds) + sizeof(struct kdbus_creds); - item->type = KDBUS_ITEM_CREDS; - item->creds = b->fake_creds; - - item = KDBUS_ITEM_NEXT(item); - } - - if (b->fake_pids_valid) { - item->size = offsetof(struct kdbus_item, pids) + sizeof(struct kdbus_pids); - item->type = KDBUS_ITEM_PIDS; - item->pids = b->fake_pids; - - item = KDBUS_ITEM_NEXT(item); - } - - if (b->fake_label) { - item->size = offsetof(struct kdbus_item, str) + l + 1; - item->type = KDBUS_ITEM_SECLABEL; - memcpy(item->str, b->fake_label, l+1); - } - - r = ioctl(b->input_fd, KDBUS_CMD_HELLO, hello); - if (r < 0) { - if (errno == ENOTTY) - /* If the ioctl is not supported we assume that the - * API version changed in a major incompatible way, - * let's indicate an API incompatibility in this - * case. */ - return -ESOCKTNOSUPPORT; - - return -errno; - } - - if (!b->kdbus_buffer) { - b->kdbus_buffer = mmap(NULL, KDBUS_POOL_SIZE, PROT_READ, MAP_SHARED, b->input_fd, 0); - if (b->kdbus_buffer == MAP_FAILED) { - b->kdbus_buffer = NULL; - r = -errno; - goto fail; - } - } - - /* The higher 32bit of the bus_flags fields are considered - * 'incompatible flags'. Refuse them all for now. */ - if (hello->bus_flags > 0xFFFFFFFFULL) { - r = -ESOCKTNOSUPPORT; - goto fail; - } - - /* extract bloom parameters from items */ - items = (void*)((uint8_t*)b->kdbus_buffer + hello->offset); - KDBUS_FOREACH(item, items, hello->items_size) { - switch (item->type) { - case KDBUS_ITEM_BLOOM_PARAMETER: - bloom = &item->bloom_parameter; - break; - } - } - - if (!bloom || !bloom_validate_parameters((size_t) bloom->size, (unsigned) bloom->n_hash)) { - r = -EOPNOTSUPP; - goto fail; - } - - b->bloom_size = (size_t) bloom->size; - b->bloom_n_hash = (unsigned) bloom->n_hash; - - if (asprintf(&b->unique_name, ":1.%llu", (unsigned long long) hello->id) < 0) { - r = -ENOMEM; - goto fail; - } - - b->unique_id = hello->id; - - b->is_kernel = true; - b->bus_client = true; - b->can_fds = !!(hello->flags & KDBUS_HELLO_ACCEPT_FD); - b->message_version = 2; - b->message_endian = BUS_NATIVE_ENDIAN; - - /* the kernel told us the UUID of the underlying bus */ - memcpy(b->server_id.bytes, hello->id128, sizeof(b->server_id.bytes)); - - /* free returned items */ - (void) bus_kernel_cmd_free(b, hello->offset); - return bus_start_running(b); - -fail: - (void) bus_kernel_cmd_free(b, hello->offset); - return r; -} - -int bus_kernel_connect(sd_bus *b) { - assert(b); - assert(b->input_fd < 0); - assert(b->output_fd < 0); - assert(b->kernel); - - if (b->is_server) - return -EINVAL; - - b->input_fd = open(b->kernel, O_RDWR|O_NOCTTY|O_CLOEXEC); - if (b->input_fd < 0) - return -errno; - - b->output_fd = b->input_fd; - - return bus_kernel_take_fd(b); -} - -int bus_kernel_cmd_free(sd_bus *bus, uint64_t offset) { - struct kdbus_cmd_free cmd = { - .size = sizeof(cmd), - .offset = offset, - }; - int r; - - assert(bus); - assert(bus->is_kernel); - - r = ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd); - if (r < 0) - return -errno; - - return 0; -} - -static void close_kdbus_msg(sd_bus *bus, struct kdbus_msg *k) { - struct kdbus_item *d; - - assert(bus); - assert(k); - - KDBUS_ITEM_FOREACH(d, k, items) { - if (d->type == KDBUS_ITEM_FDS) - close_many(d->fds, (d->size - offsetof(struct kdbus_item, fds)) / sizeof(int)); - else if (d->type == KDBUS_ITEM_PAYLOAD_MEMFD) - safe_close(d->memfd.fd); - } - - bus_kernel_cmd_free(bus, (uint8_t*) k - (uint8_t*) bus->kdbus_buffer); -} - -int bus_kernel_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call) { - struct kdbus_cmd_send cmd = { }; - int r; - - assert(bus); - assert(m); - assert(bus->state == BUS_RUNNING); - - /* If we can't deliver, we want room for the error message */ - r = bus_rqueue_make_room(bus); - if (r < 0) - return r; - - r = bus_message_setup_kmsg(bus, m); - if (r < 0) - return r; - - cmd.size = sizeof(cmd); - cmd.msg_address = (uintptr_t)m->kdbus; - - /* If this is a synchronous method call, then let's tell the - * kernel, so that it can pass CPU time/scheduling to the - * destination for the time, if it wants to. If we - * synchronously wait for the result anyway, we won't need CPU - * anyway. */ - if (hint_sync_call) { - m->kdbus->flags |= KDBUS_MSG_EXPECT_REPLY; - cmd.flags |= KDBUS_SEND_SYNC_REPLY; - } - - r = ioctl(bus->output_fd, KDBUS_CMD_SEND, &cmd); - if (r < 0) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - sd_bus_message *reply; - - if (errno == EAGAIN || errno == EINTR) - return 0; - else if (errno == ENXIO || errno == ESRCH) { - - /* ENXIO: unique name not known - * ESRCH: well-known name not known */ - - if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) - sd_bus_error_setf(&error, SD_BUS_ERROR_SERVICE_UNKNOWN, "Destination %s not known", m->destination); - else { - log_debug("Could not deliver message to %s as destination is not known. Ignoring.", m->destination); - return 0; - } - - } else if (errno == EADDRNOTAVAIL) { - - /* EADDRNOTAVAIL: activation is possible, but turned off in request flags */ - - if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) - sd_bus_error_setf(&error, SD_BUS_ERROR_SERVICE_UNKNOWN, "Activation of %s not requested", m->destination); - else { - log_debug("Could not deliver message to %s as destination is not activated. Ignoring.", m->destination); - return 0; - } - } else - return -errno; - - r = bus_message_new_synthetic_error( - bus, - BUS_MESSAGE_COOKIE(m), - &error, - &reply); - - if (r < 0) - return r; - - r = bus_seal_synthetic_message(bus, reply); - if (r < 0) - return r; - - bus->rqueue[bus->rqueue_size++] = reply; - - } else if (hint_sync_call) { - struct kdbus_msg *k; - - k = (struct kdbus_msg *)((uint8_t *)bus->kdbus_buffer + cmd.reply.offset); - assert(k); - - if (k->payload_type == KDBUS_PAYLOAD_DBUS) { - - r = bus_kernel_make_message(bus, k); - if (r < 0) { - close_kdbus_msg(bus, k); - - /* Anybody can send us invalid messages, let's just drop them. */ - if (r == -EBADMSG || r == -EPROTOTYPE) - log_debug_errno(r, "Ignoring invalid synchronous reply: %m"); - else - return r; - } - } else { - log_debug("Ignoring message with unknown payload type %llu.", (unsigned long long) k->payload_type); - close_kdbus_msg(bus, k); - } - } - - return 1; -} - -static int push_name_owner_changed( - sd_bus *bus, - const char *name, - const char *old_owner, - const char *new_owner, - const struct kdbus_timestamp *ts) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - assert(bus); - - r = sd_bus_message_new_signal( - bus, - &m, - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "NameOwnerChanged"); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "sss", name, old_owner, new_owner); - if (r < 0) - return r; - - bus_message_set_sender_driver(bus, m); - message_set_timestamp(bus, m, ts); - - r = bus_seal_synthetic_message(bus, m); - if (r < 0) - return r; - - bus->rqueue[bus->rqueue_size++] = m; - m = NULL; - - return 1; -} - -static int translate_name_change( - sd_bus *bus, - const struct kdbus_msg *k, - const struct kdbus_item *d, - const struct kdbus_timestamp *ts) { - - char new_owner[UNIQUE_NAME_MAX], old_owner[UNIQUE_NAME_MAX]; - - assert(bus); - assert(k); - assert(d); - - if (d->type == KDBUS_ITEM_NAME_ADD || (d->name_change.old_id.flags & (KDBUS_NAME_IN_QUEUE|KDBUS_NAME_ACTIVATOR))) - old_owner[0] = 0; - else - sprintf(old_owner, ":1.%llu", (unsigned long long) d->name_change.old_id.id); - - if (d->type == KDBUS_ITEM_NAME_REMOVE || (d->name_change.new_id.flags & (KDBUS_NAME_IN_QUEUE|KDBUS_NAME_ACTIVATOR))) { - - if (isempty(old_owner)) - return 0; - - new_owner[0] = 0; - } else - sprintf(new_owner, ":1.%llu", (unsigned long long) d->name_change.new_id.id); - - return push_name_owner_changed(bus, d->name_change.name, old_owner, new_owner, ts); -} - -static int translate_id_change( - sd_bus *bus, - const struct kdbus_msg *k, - const struct kdbus_item *d, - const struct kdbus_timestamp *ts) { - - char owner[UNIQUE_NAME_MAX]; - - assert(bus); - assert(k); - assert(d); - - sprintf(owner, ":1.%llu", d->id_change.id); - - return push_name_owner_changed( - bus, owner, - d->type == KDBUS_ITEM_ID_ADD ? NULL : owner, - d->type == KDBUS_ITEM_ID_ADD ? owner : NULL, - ts); -} - -static int translate_reply( - sd_bus *bus, - const struct kdbus_msg *k, - const struct kdbus_item *d, - const struct kdbus_timestamp *ts) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - assert(bus); - assert(k); - assert(d); - - r = bus_message_new_synthetic_error( - bus, - k->cookie_reply, - d->type == KDBUS_ITEM_REPLY_TIMEOUT ? - &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call timed out") : - &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call peer died"), - &m); - if (r < 0) - return r; - - message_set_timestamp(bus, m, ts); - - r = bus_seal_synthetic_message(bus, m); - if (r < 0) - return r; - - bus->rqueue[bus->rqueue_size++] = m; - m = NULL; - - return 1; -} - -static int bus_kernel_translate_message(sd_bus *bus, struct kdbus_msg *k) { - static int (* const translate[])(sd_bus *bus, const struct kdbus_msg *k, const struct kdbus_item *d, const struct kdbus_timestamp *ts) = { - [KDBUS_ITEM_NAME_ADD - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change, - [KDBUS_ITEM_NAME_REMOVE - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change, - [KDBUS_ITEM_NAME_CHANGE - _KDBUS_ITEM_KERNEL_BASE] = translate_name_change, - - [KDBUS_ITEM_ID_ADD - _KDBUS_ITEM_KERNEL_BASE] = translate_id_change, - [KDBUS_ITEM_ID_REMOVE - _KDBUS_ITEM_KERNEL_BASE] = translate_id_change, - - [KDBUS_ITEM_REPLY_TIMEOUT - _KDBUS_ITEM_KERNEL_BASE] = translate_reply, - [KDBUS_ITEM_REPLY_DEAD - _KDBUS_ITEM_KERNEL_BASE] = translate_reply, - }; - - struct kdbus_item *d, *found = NULL; - struct kdbus_timestamp *ts = NULL; - - assert(bus); - assert(k); - assert(k->payload_type == KDBUS_PAYLOAD_KERNEL); - - KDBUS_ITEM_FOREACH(d, k, items) { - if (d->type == KDBUS_ITEM_TIMESTAMP) - ts = &d->timestamp; - else if (d->type >= _KDBUS_ITEM_KERNEL_BASE && d->type < _KDBUS_ITEM_KERNEL_BASE + ELEMENTSOF(translate)) { - if (found) - return -EBADMSG; - found = d; - } else - log_debug("Got unknown field from kernel %llu", d->type); - } - - if (!found) { - log_debug("Didn't find a kernel message to translate."); - return 0; - } - - return translate[found->type - _KDBUS_ITEM_KERNEL_BASE](bus, k, found, ts); -} - -int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority) { - struct kdbus_cmd_recv recv = { .size = sizeof(recv) }; - struct kdbus_msg *k; - int r; - - assert(bus); - - r = bus_rqueue_make_room(bus); - if (r < 0) - return r; - - if (hint_priority) { - recv.flags |= KDBUS_RECV_USE_PRIORITY; - recv.priority = priority; - } - - r = ioctl(bus->input_fd, KDBUS_CMD_RECV, &recv); - if (recv.return_flags & KDBUS_RECV_RETURN_DROPPED_MSGS) - log_debug("%s: kdbus reports %" PRIu64 " dropped broadcast messages, ignoring.", strna(bus->description), (uint64_t) recv.dropped_msgs); - if (r < 0) { - if (errno == EAGAIN) - return 0; - - return -errno; - } - - k = (struct kdbus_msg *)((uint8_t *)bus->kdbus_buffer + recv.msg.offset); - if (k->payload_type == KDBUS_PAYLOAD_DBUS) { - r = bus_kernel_make_message(bus, k); - - /* Anybody can send us invalid messages, let's just drop them. */ - if (r == -EBADMSG || r == -EPROTOTYPE) { - log_debug_errno(r, "Ignoring invalid message: %m"); - r = 0; - } - - if (r <= 0) - close_kdbus_msg(bus, k); - } else if (k->payload_type == KDBUS_PAYLOAD_KERNEL) { - r = bus_kernel_translate_message(bus, k); - close_kdbus_msg(bus, k); - } else { - log_debug("Ignoring message with unknown payload type %llu.", (unsigned long long) k->payload_type); - r = 0; - close_kdbus_msg(bus, k); - } - - return r < 0 ? r : 1; -} - -int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *allocated) { - struct memfd_cache *c; - int fd; - - assert(address); - assert(mapped); - assert(allocated); - - if (!bus || !bus->is_kernel) - return -EOPNOTSUPP; - - assert_se(pthread_mutex_lock(&bus->memfd_cache_mutex) == 0); - - if (bus->n_memfd_cache <= 0) { - int r; - - assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0); - - r = memfd_new(bus->description); - if (r < 0) - return r; - - *address = NULL; - *mapped = 0; - *allocated = 0; - return r; - } - - c = &bus->memfd_cache[--bus->n_memfd_cache]; - - assert(c->fd >= 0); - assert(c->mapped == 0 || c->address); - - *address = c->address; - *mapped = c->mapped; - *allocated = c->allocated; - fd = c->fd; - - assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0); - - return fd; -} - -static void close_and_munmap(int fd, void *address, size_t size) { - if (size > 0) - assert_se(munmap(address, PAGE_ALIGN(size)) >= 0); - - safe_close(fd); -} - -void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, size_t allocated) { - struct memfd_cache *c; - uint64_t max_mapped = PAGE_ALIGN(MEMFD_CACHE_ITEM_SIZE_MAX); - - assert(fd >= 0); - assert(mapped == 0 || address); - - if (!bus || !bus->is_kernel) { - close_and_munmap(fd, address, mapped); - return; - } - - assert_se(pthread_mutex_lock(&bus->memfd_cache_mutex) == 0); - - if (bus->n_memfd_cache >= ELEMENTSOF(bus->memfd_cache)) { - assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0); - - close_and_munmap(fd, address, mapped); - return; - } - - c = &bus->memfd_cache[bus->n_memfd_cache++]; - c->fd = fd; - c->address = address; - - /* If overly long, let's return a bit to the OS */ - if (mapped > max_mapped) { - assert_se(memfd_set_size(fd, max_mapped) >= 0); - assert_se(munmap((uint8_t*) address + max_mapped, PAGE_ALIGN(mapped - max_mapped)) >= 0); - c->mapped = c->allocated = max_mapped; - } else { - c->mapped = mapped; - c->allocated = allocated; - } - - assert_se(pthread_mutex_unlock(&bus->memfd_cache_mutex) == 0); -} - -void bus_kernel_flush_memfd(sd_bus *b) { - unsigned i; - - assert(b); - - for (i = 0; i < b->n_memfd_cache; i++) - close_and_munmap(b->memfd_cache[i].fd, b->memfd_cache[i].address, b->memfd_cache[i].mapped); -} - -uint64_t request_name_flags_to_kdbus(uint64_t flags) { - uint64_t f = 0; - - if (flags & SD_BUS_NAME_ALLOW_REPLACEMENT) - f |= KDBUS_NAME_ALLOW_REPLACEMENT; - - if (flags & SD_BUS_NAME_REPLACE_EXISTING) - f |= KDBUS_NAME_REPLACE_EXISTING; - - if (flags & SD_BUS_NAME_QUEUE) - f |= KDBUS_NAME_QUEUE; - - return f; -} - -uint64_t attach_flags_to_kdbus(uint64_t mask) { - uint64_t m = 0; - - if (mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID| - SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID)) - m |= KDBUS_ATTACH_CREDS; - - if (mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_PPID)) - m |= KDBUS_ATTACH_PIDS; - - if (mask & SD_BUS_CREDS_COMM) - m |= KDBUS_ATTACH_PID_COMM; - - if (mask & SD_BUS_CREDS_TID_COMM) - m |= KDBUS_ATTACH_TID_COMM; - - if (mask & SD_BUS_CREDS_EXE) - m |= KDBUS_ATTACH_EXE; - - if (mask & SD_BUS_CREDS_CMDLINE) - m |= KDBUS_ATTACH_CMDLINE; - - if (mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID)) - m |= KDBUS_ATTACH_CGROUP; - - if (mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS)) - m |= KDBUS_ATTACH_CAPS; - - if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) - m |= KDBUS_ATTACH_SECLABEL; - - if (mask & (SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID)) - m |= KDBUS_ATTACH_AUDIT; - - if (mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) - m |= KDBUS_ATTACH_NAMES; - - if (mask & SD_BUS_CREDS_DESCRIPTION) - m |= KDBUS_ATTACH_CONN_DESCRIPTION; - - if (mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) - m |= KDBUS_ATTACH_AUXGROUPS; - - return m; -} - -int bus_kernel_create_bus(const char *name, bool world, char **s) { - struct kdbus_cmd *make; - struct kdbus_item *n; - size_t l; - int fd; - - assert(name); - assert(s); - - fd = open("/sys/fs/kdbus/control", O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return -errno; - - l = strlen(name); - make = alloca0_align(offsetof(struct kdbus_cmd, items) + - ALIGN8(offsetof(struct kdbus_item, bloom_parameter) + sizeof(struct kdbus_bloom_parameter)) + - ALIGN8(offsetof(struct kdbus_item, data64) + sizeof(uint64_t)) + - ALIGN8(offsetof(struct kdbus_item, str) + DECIMAL_STR_MAX(uid_t) + 1 + l + 1), - 8); - - make->size = offsetof(struct kdbus_cmd, items); - - /* Set the bloom parameters */ - n = make->items; - n->size = offsetof(struct kdbus_item, bloom_parameter) + - sizeof(struct kdbus_bloom_parameter); - n->type = KDBUS_ITEM_BLOOM_PARAMETER; - n->bloom_parameter.size = DEFAULT_BLOOM_SIZE; - n->bloom_parameter.n_hash = DEFAULT_BLOOM_N_HASH; - - assert_cc(DEFAULT_BLOOM_SIZE > 0); - assert_cc(DEFAULT_BLOOM_N_HASH > 0); - - make->size += ALIGN8(n->size); - - /* Provide all metadata via bus-owner queries */ - n = KDBUS_ITEM_NEXT(n); - n->type = KDBUS_ITEM_ATTACH_FLAGS_SEND; - n->size = offsetof(struct kdbus_item, data64) + sizeof(uint64_t); - n->data64[0] = _KDBUS_ATTACH_ANY; - make->size += ALIGN8(n->size); - - /* Set the a good name */ - n = KDBUS_ITEM_NEXT(n); - sprintf(n->str, UID_FMT "-%s", getuid(), name); - n->size = offsetof(struct kdbus_item, str) + strlen(n->str) + 1; - n->type = KDBUS_ITEM_MAKE_NAME; - make->size += ALIGN8(n->size); - - make->flags = world ? KDBUS_MAKE_ACCESS_WORLD : 0; - - if (ioctl(fd, KDBUS_CMD_BUS_MAKE, make) < 0) { - safe_close(fd); - - /* Major API change? then the ioctls got shuffled around. */ - if (errno == ENOTTY) - return -ESOCKTNOSUPPORT; - - return -errno; - } - - if (s) { - char *p; - - p = strjoin("/sys/fs/kdbus/", n->str, "/bus", NULL); - if (!p) { - safe_close(fd); - return -ENOMEM; - } - - *s = p; - } - - return fd; -} - -int bus_kernel_open_bus_fd(const char *bus, char **path) { - char *p; - int fd; - size_t len; - - assert(bus); - - len = strlen("/sys/fs/kdbus/") + DECIMAL_STR_MAX(uid_t) + 1 + strlen(bus) + strlen("/bus") + 1; - - if (path) { - p = new(char, len); - if (!p) - return -ENOMEM; - } else - p = newa(char, len); - - sprintf(p, "/sys/fs/kdbus/" UID_FMT "-%s/bus", getuid(), bus); - - fd = open(p, O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) { - if (path) - free(p); - - return -errno; - } - - if (path) - *path = p; - - return fd; -} - -int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char **ep_path) { - _cleanup_free_ char *path = NULL; - struct kdbus_cmd *make; - struct kdbus_item *n; - const char *name; - int fd; - - fd = bus_kernel_open_bus_fd(bus_name, &path); - if (fd < 0) - return fd; - - make = alloca0_align(ALIGN8(offsetof(struct kdbus_cmd, items)) + - ALIGN8(offsetof(struct kdbus_item, str) + DECIMAL_STR_MAX(uid_t) + 1 + strlen(ep_name) + 1), - 8); - make->size = ALIGN8(offsetof(struct kdbus_cmd, items)); - make->flags = KDBUS_MAKE_ACCESS_WORLD; - - n = make->items; - sprintf(n->str, UID_FMT "-%s", getuid(), ep_name); - n->size = offsetof(struct kdbus_item, str) + strlen(n->str) + 1; - n->type = KDBUS_ITEM_MAKE_NAME; - make->size += ALIGN8(n->size); - name = n->str; - - if (ioctl(fd, KDBUS_CMD_ENDPOINT_MAKE, make) < 0) { - safe_close(fd); - return -errno; - } - - if (ep_path) { - char *p; - - p = strjoin(dirname(path), "/", name, NULL); - if (!p) { - safe_close(fd); - return -ENOMEM; - } - - *ep_path = p; - } - - return fd; -} - -int bus_kernel_try_close(sd_bus *bus) { - struct kdbus_cmd byebye = { .size = sizeof(byebye) }; - - assert(bus); - assert(bus->is_kernel); - - if (ioctl(bus->input_fd, KDBUS_CMD_BYEBYE, &byebye) < 0) - return -errno; - - return 0; -} - -int bus_kernel_drop_one(int fd) { - struct kdbus_cmd_recv recv = { - .size = sizeof(recv), - .flags = KDBUS_RECV_DROP, - }; - - assert(fd >= 0); - - if (ioctl(fd, KDBUS_CMD_RECV, &recv) < 0) - return -errno; - - return 0; -} - -int bus_kernel_realize_attach_flags(sd_bus *bus) { - struct kdbus_cmd *update; - struct kdbus_item *n; - - assert(bus); - assert(bus->is_kernel); - - update = alloca0_align(offsetof(struct kdbus_cmd, items) + - ALIGN8(offsetof(struct kdbus_item, data64) + sizeof(uint64_t)), - 8); - - n = update->items; - n->type = KDBUS_ITEM_ATTACH_FLAGS_RECV; - n->size = offsetof(struct kdbus_item, data64) + sizeof(uint64_t); - n->data64[0] = bus->attach_flags; - - update->size = - offsetof(struct kdbus_cmd, items) + - ALIGN8(n->size); - - if (ioctl(bus->input_fd, KDBUS_CMD_UPDATE, update) < 0) - return -errno; - - return 0; -} - -int bus_kernel_get_bus_name(sd_bus *bus, char **name) { - struct kdbus_cmd_info cmd = { - .size = sizeof(struct kdbus_cmd_info), - }; - struct kdbus_info *info; - struct kdbus_item *item; - char *n = NULL; - int r; - - assert(bus); - assert(name); - assert(bus->is_kernel); - - r = ioctl(bus->input_fd, KDBUS_CMD_BUS_CREATOR_INFO, &cmd); - if (r < 0) - return -errno; - - info = (struct kdbus_info*) ((uint8_t*) bus->kdbus_buffer + cmd.offset); - - KDBUS_ITEM_FOREACH(item, info, items) - if (item->type == KDBUS_ITEM_MAKE_NAME) { - r = free_and_strdup(&n, item->str); - break; - } - - bus_kernel_cmd_free(bus, cmd.offset); - - if (r < 0) - return r; - if (!n) - return -EIO; - - *name = n; - return 0; -} diff --git a/src/libsystemd/sd-bus/bus-kernel.h b/src/libsystemd/sd-bus/bus-kernel.h deleted file mode 100644 index 53ba3bdcf3..0000000000 --- a/src/libsystemd/sd-bus/bus-kernel.h +++ /dev/null @@ -1,93 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> - -#include "sd-bus.h" - -#define KDBUS_ITEM_NEXT(item) \ - (typeof(item))(((uint8_t *)item) + ALIGN8((item)->size)) - -#define KDBUS_ITEM_FOREACH(part, head, first) \ - for (part = (head)->first; \ - ((uint8_t *)(part) < (uint8_t *)(head) + (head)->size) && \ - ((uint8_t *) part >= (uint8_t *) head); \ - part = KDBUS_ITEM_NEXT(part)) -#define KDBUS_FOREACH(iter, first, _size) \ - for (iter = (first); \ - ((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \ - ((uint8_t *)(iter) >= (uint8_t *)(first)); \ - iter = (void*)(((uint8_t *)iter) + ALIGN8((iter)->size))) - -#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data) -#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE) - -#define MEMFD_CACHE_MAX 32 - -/* When we cache a memfd block for reuse, we will truncate blocks - * longer than this in order not to keep too much data around. */ -#define MEMFD_CACHE_ITEM_SIZE_MAX (128*1024) - -/* This determines at which minimum size we prefer sending memfds over - * sending vectors */ -#define MEMFD_MIN_SIZE (512*1024) - -/* The size of the per-connection memory pool that we set up and where - * the kernel places our incoming messages */ -#define KDBUS_POOL_SIZE (16*1024*1024) - -struct memfd_cache { - int fd; - void *address; - size_t mapped; - size_t allocated; -}; - -int bus_kernel_connect(sd_bus *b); -int bus_kernel_take_fd(sd_bus *b); - -int bus_kernel_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call); -int bus_kernel_read_message(sd_bus *bus, bool hint_priority, int64_t priority); - -int bus_kernel_open_bus_fd(const char *bus, char **path); - -int bus_kernel_create_bus(const char *name, bool world, char **s); -int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char **path); - -int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *allocated); -void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, size_t allocated); - -void bus_kernel_flush_memfd(sd_bus *bus); - -int bus_kernel_parse_unique_name(const char *s, uint64_t *id); - -uint64_t request_name_flags_to_kdbus(uint64_t sd_bus_flags); -uint64_t attach_flags_to_kdbus(uint64_t sd_bus_flags); - -int bus_kernel_try_close(sd_bus *bus); - -int bus_kernel_drop_one(int fd); - -int bus_kernel_realize_attach_flags(sd_bus *bus); - -int bus_kernel_get_bus_name(sd_bus *bus, char **name); - -int bus_kernel_cmd_free(sd_bus *bus, uint64_t offset); diff --git a/src/libsystemd/sd-bus/bus-match.c b/src/libsystemd/sd-bus/bus-match.c deleted file mode 100644 index 397baf6f33..0000000000 --- a/src/libsystemd/sd-bus/bus-match.c +++ /dev/null @@ -1,1218 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "alloc-util.h" -#include "bus-internal.h" -#include "bus-match.h" -#include "bus-message.h" -#include "bus-util.h" -#include "fd-util.h" -#include "fileio.h" -#include "hexdecoct.h" -#include "string-util.h" -#include "strv.h" - -/* Example: - * - * A: type=signal,sender=foo,interface=bar - * B: type=signal,sender=quux,interface=fips - * C: type=signal,sender=quux,interface=waldo - * D: type=signal,member=test - * E: sender=miau - * F: type=signal - * G: type=signal - * - * results in this tree: - * - * BUS_MATCH_ROOT - * + BUS_MATCH_MESSAGE_TYPE - * | ` BUS_MATCH_VALUE: value == signal - * | + DBUS_MATCH_SENDER - * | | + BUS_MATCH_VALUE: value == foo - * | | | ` DBUS_MATCH_INTERFACE - * | | | ` BUS_MATCH_VALUE: value == bar - * | | | ` BUS_MATCH_LEAF: A - * | | ` BUS_MATCH_VALUE: value == quux - * | | ` DBUS_MATCH_INTERFACE - * | | | BUS_MATCH_VALUE: value == fips - * | | | ` BUS_MATCH_LEAF: B - * | | ` BUS_MATCH_VALUE: value == waldo - * | | ` BUS_MATCH_LEAF: C - * | + DBUS_MATCH_MEMBER - * | | ` BUS_MATCH_VALUE: value == test - * | | ` BUS_MATCH_LEAF: D - * | + BUS_MATCH_LEAF: F - * | ` BUS_MATCH_LEAF: G - * ` BUS_MATCH_SENDER - * ` BUS_MATCH_VALUE: value == miau - * ` BUS_MATCH_LEAF: E - */ - -static inline bool BUS_MATCH_IS_COMPARE(enum bus_match_node_type t) { - return t >= BUS_MATCH_SENDER && t <= BUS_MATCH_ARG_HAS_LAST; -} - -static inline bool BUS_MATCH_CAN_HASH(enum bus_match_node_type t) { - return (t >= BUS_MATCH_MESSAGE_TYPE && t <= BUS_MATCH_PATH) || - (t >= BUS_MATCH_ARG && t <= BUS_MATCH_ARG_LAST) || - (t >= BUS_MATCH_ARG_HAS && t <= BUS_MATCH_ARG_HAS_LAST); -} - -static void bus_match_node_free(struct bus_match_node *node) { - assert(node); - assert(node->parent); - assert(!node->child); - assert(node->type != BUS_MATCH_ROOT); - assert(node->type < _BUS_MATCH_NODE_TYPE_MAX); - - if (node->parent->child) { - /* We are apparently linked into the parent's child - * list. Let's remove us from there. */ - if (node->prev) { - assert(node->prev->next == node); - node->prev->next = node->next; - } else { - assert(node->parent->child == node); - node->parent->child = node->next; - } - - if (node->next) - node->next->prev = node->prev; - } - - if (node->type == BUS_MATCH_VALUE) { - /* We might be in the parent's hash table, so clean - * this up */ - - if (node->parent->type == BUS_MATCH_MESSAGE_TYPE) - hashmap_remove(node->parent->compare.children, UINT_TO_PTR(node->value.u8)); - else if (BUS_MATCH_CAN_HASH(node->parent->type) && node->value.str) - hashmap_remove(node->parent->compare.children, node->value.str); - - free(node->value.str); - } - - if (BUS_MATCH_IS_COMPARE(node->type)) { - assert(hashmap_isempty(node->compare.children)); - hashmap_free(node->compare.children); - } - - free(node); -} - -static bool bus_match_node_maybe_free(struct bus_match_node *node) { - assert(node); - - if (node->type == BUS_MATCH_ROOT) - return false; - - if (node->child) - return false; - - if (BUS_MATCH_IS_COMPARE(node->type) && !hashmap_isempty(node->compare.children)) - return true; - - bus_match_node_free(node); - return true; -} - -static bool value_node_test( - struct bus_match_node *node, - enum bus_match_node_type parent_type, - uint8_t value_u8, - const char *value_str, - char **value_strv, - sd_bus_message *m) { - - assert(node); - assert(node->type == BUS_MATCH_VALUE); - - /* Tests parameters against this value node, doing prefix - * magic and stuff. */ - - switch (parent_type) { - - case BUS_MATCH_MESSAGE_TYPE: - return node->value.u8 == value_u8; - - case BUS_MATCH_SENDER: - if (streq_ptr(node->value.str, value_str)) - return true; - - if (m->creds.mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) { - char **i; - - /* on kdbus we have the well known names list - * in the credentials, let's make use of that - * for an accurate match */ - - STRV_FOREACH(i, m->creds.well_known_names) - if (streq_ptr(node->value.str, *i)) - return true; - - } else { - - /* If we don't have kdbus, we don't know the - * well-known names of the senders. In that, - * let's just hope that dbus-daemon doesn't - * send us stuff we didn't want. */ - - if (node->value.str[0] != ':' && value_str && value_str[0] == ':') - return true; - } - - return false; - - case BUS_MATCH_DESTINATION: - case BUS_MATCH_INTERFACE: - case BUS_MATCH_MEMBER: - case BUS_MATCH_PATH: - case BUS_MATCH_ARG ... BUS_MATCH_ARG_LAST: - - if (value_str) - return streq_ptr(node->value.str, value_str); - - return false; - - case BUS_MATCH_ARG_HAS ... BUS_MATCH_ARG_HAS_LAST: { - char **i; - - STRV_FOREACH(i, value_strv) - if (streq_ptr(node->value.str, *i)) - return true; - - return false; - } - - case BUS_MATCH_ARG_NAMESPACE ... BUS_MATCH_ARG_NAMESPACE_LAST: - if (value_str) - return namespace_simple_pattern(node->value.str, value_str); - - return false; - - case BUS_MATCH_PATH_NAMESPACE: - return path_simple_pattern(node->value.str, value_str); - - case BUS_MATCH_ARG_PATH ... BUS_MATCH_ARG_PATH_LAST: - if (value_str) - return path_complex_pattern(node->value.str, value_str); - - return false; - - default: - assert_not_reached("Invalid node type"); - } -} - -static bool value_node_same( - struct bus_match_node *node, - enum bus_match_node_type parent_type, - uint8_t value_u8, - const char *value_str) { - - /* Tests parameters against this value node, not doing prefix - * magic and stuff, i.e. this one actually compares the match - * itself. */ - - assert(node); - assert(node->type == BUS_MATCH_VALUE); - - switch (parent_type) { - - case BUS_MATCH_MESSAGE_TYPE: - return node->value.u8 == value_u8; - - case BUS_MATCH_SENDER: - case BUS_MATCH_DESTINATION: - case BUS_MATCH_INTERFACE: - case BUS_MATCH_MEMBER: - case BUS_MATCH_PATH: - case BUS_MATCH_ARG ... BUS_MATCH_ARG_LAST: - case BUS_MATCH_ARG_HAS ... BUS_MATCH_ARG_HAS_LAST: - case BUS_MATCH_ARG_NAMESPACE ... BUS_MATCH_ARG_NAMESPACE_LAST: - case BUS_MATCH_PATH_NAMESPACE: - case BUS_MATCH_ARG_PATH ... BUS_MATCH_ARG_PATH_LAST: - return streq(node->value.str, value_str); - - default: - assert_not_reached("Invalid node type"); - } -} - -int bus_match_run( - sd_bus *bus, - struct bus_match_node *node, - sd_bus_message *m) { - - _cleanup_strv_free_ char **test_strv = NULL; - const char *test_str = NULL; - uint8_t test_u8 = 0; - int r; - - assert(m); - - if (!node) - return 0; - - if (bus && bus->match_callbacks_modified) - return 0; - - /* Not these special semantics: when traversing the tree we - * usually let bus_match_run() when called for a node - * recursively invoke bus_match_run(). There's are two - * exceptions here though, which are BUS_NODE_ROOT (which - * cannot have a sibling), and BUS_NODE_VALUE (whose siblings - * are invoked anyway by its parent. */ - - switch (node->type) { - - case BUS_MATCH_ROOT: - - /* Run all children. Since we cannot have any siblings - * we won't call any. The children of the root node - * are compares or leaves, they will automatically - * call their siblings. */ - return bus_match_run(bus, node->child, m); - - case BUS_MATCH_VALUE: - - /* Run all children. We don't execute any siblings, we - * assume our caller does that. The children of value - * nodes are compares or leaves, they will - * automatically call their siblings */ - - assert(node->child); - return bus_match_run(bus, node->child, m); - - case BUS_MATCH_LEAF: - - if (bus) { - if (node->leaf.callback->last_iteration == bus->iteration_counter) - return 0; - - node->leaf.callback->last_iteration = bus->iteration_counter; - } - - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - /* Run the callback. And then invoke siblings. */ - if (node->leaf.callback->callback) { - _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; - sd_bus_slot *slot; - - slot = container_of(node->leaf.callback, sd_bus_slot, match_callback); - if (bus) { - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_handler = node->leaf.callback->callback; - bus->current_userdata = slot->userdata; - } - r = node->leaf.callback->callback(m, slot->userdata, &error_buffer); - if (bus) { - bus->current_userdata = NULL; - bus->current_handler = NULL; - bus->current_slot = sd_bus_slot_unref(slot); - } - - r = bus_maybe_reply_error(m, r, &error_buffer); - if (r != 0) - return r; - - if (bus && bus->match_callbacks_modified) - return 0; - } - - return bus_match_run(bus, node->next, m); - - case BUS_MATCH_MESSAGE_TYPE: - test_u8 = m->header->type; - break; - - case BUS_MATCH_SENDER: - test_str = m->sender; - /* FIXME: resolve test_str from a well-known to a unique name first */ - break; - - case BUS_MATCH_DESTINATION: - test_str = m->destination; - break; - - case BUS_MATCH_INTERFACE: - test_str = m->interface; - break; - - case BUS_MATCH_MEMBER: - test_str = m->member; - break; - - case BUS_MATCH_PATH: - case BUS_MATCH_PATH_NAMESPACE: - test_str = m->path; - break; - - case BUS_MATCH_ARG ... BUS_MATCH_ARG_LAST: - (void) bus_message_get_arg(m, node->type - BUS_MATCH_ARG, &test_str); - break; - - case BUS_MATCH_ARG_PATH ... BUS_MATCH_ARG_PATH_LAST: - (void) bus_message_get_arg(m, node->type - BUS_MATCH_ARG_PATH, &test_str); - break; - - case BUS_MATCH_ARG_NAMESPACE ... BUS_MATCH_ARG_NAMESPACE_LAST: - (void) bus_message_get_arg(m, node->type - BUS_MATCH_ARG_NAMESPACE, &test_str); - break; - - case BUS_MATCH_ARG_HAS ... BUS_MATCH_ARG_HAS_LAST: - (void) bus_message_get_arg_strv(m, node->type - BUS_MATCH_ARG_HAS, &test_strv); - break; - - default: - assert_not_reached("Unknown match type."); - } - - if (BUS_MATCH_CAN_HASH(node->type)) { - struct bus_match_node *found; - - /* Lookup via hash table, nice! So let's jump directly. */ - - if (test_str) - found = hashmap_get(node->compare.children, test_str); - else if (test_strv) { - char **i; - - STRV_FOREACH(i, test_strv) { - found = hashmap_get(node->compare.children, *i); - if (found) { - r = bus_match_run(bus, found, m); - if (r != 0) - return r; - } - } - - found = NULL; - } else if (node->type == BUS_MATCH_MESSAGE_TYPE) - found = hashmap_get(node->compare.children, UINT_TO_PTR(test_u8)); - else - found = NULL; - - if (found) { - r = bus_match_run(bus, found, m); - if (r != 0) - return r; - } - } else { - struct bus_match_node *c; - - /* No hash table, so let's iterate manually... */ - - for (c = node->child; c; c = c->next) { - if (!value_node_test(c, node->type, test_u8, test_str, test_strv, m)) - continue; - - r = bus_match_run(bus, c, m); - if (r != 0) - return r; - } - } - - if (bus && bus->match_callbacks_modified) - return 0; - - /* And now, let's invoke our siblings */ - return bus_match_run(bus, node->next, m); -} - -static int bus_match_add_compare_value( - struct bus_match_node *where, - enum bus_match_node_type t, - uint8_t value_u8, - const char *value_str, - struct bus_match_node **ret) { - - struct bus_match_node *c = NULL, *n = NULL; - int r; - - assert(where); - assert(where->type == BUS_MATCH_ROOT || where->type == BUS_MATCH_VALUE); - assert(BUS_MATCH_IS_COMPARE(t)); - assert(ret); - - for (c = where->child; c && c->type != t; c = c->next) - ; - - if (c) { - /* Comparison node already exists? Then let's see if - * the value node exists too. */ - - if (t == BUS_MATCH_MESSAGE_TYPE) - n = hashmap_get(c->compare.children, UINT_TO_PTR(value_u8)); - else if (BUS_MATCH_CAN_HASH(t)) - n = hashmap_get(c->compare.children, value_str); - else { - for (n = c->child; n && !value_node_same(n, t, value_u8, value_str); n = n->next) - ; - } - - if (n) { - *ret = n; - return 0; - } - } else { - /* Comparison node, doesn't exist yet? Then let's - * create it. */ - - c = new0(struct bus_match_node, 1); - if (!c) { - r = -ENOMEM; - goto fail; - } - - c->type = t; - c->parent = where; - c->next = where->child; - if (c->next) - c->next->prev = c; - where->child = c; - - if (t == BUS_MATCH_MESSAGE_TYPE) { - c->compare.children = hashmap_new(NULL); - if (!c->compare.children) { - r = -ENOMEM; - goto fail; - } - } else if (BUS_MATCH_CAN_HASH(t)) { - c->compare.children = hashmap_new(&string_hash_ops); - if (!c->compare.children) { - r = -ENOMEM; - goto fail; - } - } - } - - n = new0(struct bus_match_node, 1); - if (!n) { - r = -ENOMEM; - goto fail; - } - - n->type = BUS_MATCH_VALUE; - n->value.u8 = value_u8; - if (value_str) { - n->value.str = strdup(value_str); - if (!n->value.str) { - r = -ENOMEM; - goto fail; - } - } - - n->parent = c; - if (c->compare.children) { - - if (t == BUS_MATCH_MESSAGE_TYPE) - r = hashmap_put(c->compare.children, UINT_TO_PTR(value_u8), n); - else - r = hashmap_put(c->compare.children, n->value.str, n); - - if (r < 0) - goto fail; - } else { - n->next = c->child; - if (n->next) - n->next->prev = n; - c->child = n; - } - - *ret = n; - return 1; - -fail: - if (c) - bus_match_node_maybe_free(c); - - if (n) { - free(n->value.str); - free(n); - } - - return r; -} - -static int bus_match_find_compare_value( - struct bus_match_node *where, - enum bus_match_node_type t, - uint8_t value_u8, - const char *value_str, - struct bus_match_node **ret) { - - struct bus_match_node *c, *n; - - assert(where); - assert(where->type == BUS_MATCH_ROOT || where->type == BUS_MATCH_VALUE); - assert(BUS_MATCH_IS_COMPARE(t)); - assert(ret); - - for (c = where->child; c && c->type != t; c = c->next) - ; - - if (!c) - return 0; - - if (t == BUS_MATCH_MESSAGE_TYPE) - n = hashmap_get(c->compare.children, UINT_TO_PTR(value_u8)); - else if (BUS_MATCH_CAN_HASH(t)) - n = hashmap_get(c->compare.children, value_str); - else { - for (n = c->child; n && !value_node_same(n, t, value_u8, value_str); n = n->next) - ; - } - - if (n) { - *ret = n; - return 1; - } - - return 0; -} - -static int bus_match_add_leaf( - struct bus_match_node *where, - struct match_callback *callback) { - - struct bus_match_node *n; - - assert(where); - assert(where->type == BUS_MATCH_ROOT || where->type == BUS_MATCH_VALUE); - assert(callback); - - n = new0(struct bus_match_node, 1); - if (!n) - return -ENOMEM; - - n->type = BUS_MATCH_LEAF; - n->parent = where; - n->next = where->child; - if (n->next) - n->next->prev = n; - - n->leaf.callback = callback; - callback->match_node = n; - - where->child = n; - - return 1; -} - -static int bus_match_find_leaf( - struct bus_match_node *where, - sd_bus_message_handler_t callback, - void *userdata, - struct bus_match_node **ret) { - - struct bus_match_node *c; - - assert(where); - assert(where->type == BUS_MATCH_ROOT || where->type == BUS_MATCH_VALUE); - assert(ret); - - for (c = where->child; c; c = c->next) { - sd_bus_slot *s; - - s = container_of(c->leaf.callback, sd_bus_slot, match_callback); - - if (c->type == BUS_MATCH_LEAF && - c->leaf.callback->callback == callback && - s->userdata == userdata) { - *ret = c; - return 1; - } - } - - return 0; -} - -enum bus_match_node_type bus_match_node_type_from_string(const char *k, size_t n) { - assert(k); - - if (n == 4 && startswith(k, "type")) - return BUS_MATCH_MESSAGE_TYPE; - if (n == 6 && startswith(k, "sender")) - return BUS_MATCH_SENDER; - if (n == 11 && startswith(k, "destination")) - return BUS_MATCH_DESTINATION; - if (n == 9 && startswith(k, "interface")) - return BUS_MATCH_INTERFACE; - if (n == 6 && startswith(k, "member")) - return BUS_MATCH_MEMBER; - if (n == 4 && startswith(k, "path")) - return BUS_MATCH_PATH; - if (n == 14 && startswith(k, "path_namespace")) - return BUS_MATCH_PATH_NAMESPACE; - - if (n == 4 && startswith(k, "arg")) { - int j; - - j = undecchar(k[3]); - if (j < 0) - return -EINVAL; - - return BUS_MATCH_ARG + j; - } - - if (n == 5 && startswith(k, "arg")) { - int a, b; - enum bus_match_node_type t; - - a = undecchar(k[3]); - b = undecchar(k[4]); - if (a <= 0 || b < 0) - return -EINVAL; - - t = BUS_MATCH_ARG + a * 10 + b; - if (t > BUS_MATCH_ARG_LAST) - return -EINVAL; - - return t; - } - - if (n == 8 && startswith(k, "arg") && startswith(k + 4, "path")) { - int j; - - j = undecchar(k[3]); - if (j < 0) - return -EINVAL; - - return BUS_MATCH_ARG_PATH + j; - } - - if (n == 9 && startswith(k, "arg") && startswith(k + 5, "path")) { - enum bus_match_node_type t; - int a, b; - - a = undecchar(k[3]); - b = undecchar(k[4]); - if (a <= 0 || b < 0) - return -EINVAL; - - t = BUS_MATCH_ARG_PATH + a * 10 + b; - if (t > BUS_MATCH_ARG_PATH_LAST) - return -EINVAL; - - return t; - } - - if (n == 13 && startswith(k, "arg") && startswith(k + 4, "namespace")) { - int j; - - j = undecchar(k[3]); - if (j < 0) - return -EINVAL; - - return BUS_MATCH_ARG_NAMESPACE + j; - } - - if (n == 14 && startswith(k, "arg") && startswith(k + 5, "namespace")) { - enum bus_match_node_type t; - int a, b; - - a = undecchar(k[3]); - b = undecchar(k[4]); - if (a <= 0 || b < 0) - return -EINVAL; - - t = BUS_MATCH_ARG_NAMESPACE + a * 10 + b; - if (t > BUS_MATCH_ARG_NAMESPACE_LAST) - return -EINVAL; - - return t; - } - - if (n == 7 && startswith(k, "arg") && startswith(k + 4, "has")) { - int j; - - j = undecchar(k[3]); - if (j < 0) - return -EINVAL; - - return BUS_MATCH_ARG_HAS + j; - } - - if (n == 8 && startswith(k, "arg") && startswith(k + 5, "has")) { - enum bus_match_node_type t; - int a, b; - - a = undecchar(k[3]); - b = undecchar(k[4]); - if (a <= 0 || b < 0) - return -EINVAL; - - t = BUS_MATCH_ARG_HAS + a * 10 + b; - if (t > BUS_MATCH_ARG_HAS_LAST) - return -EINVAL; - - return t; - } - - return -EINVAL; -} - -static int match_component_compare(const void *a, const void *b) { - const struct bus_match_component *x = a, *y = b; - - if (x->type < y->type) - return -1; - if (x->type > y->type) - return 1; - - return 0; -} - -void bus_match_parse_free(struct bus_match_component *components, unsigned n_components) { - unsigned i; - - for (i = 0; i < n_components; i++) - free(components[i].value_str); - - free(components); -} - -int bus_match_parse( - const char *match, - struct bus_match_component **_components, - unsigned *_n_components) { - - const char *p = match; - struct bus_match_component *components = NULL; - size_t components_allocated = 0; - unsigned n_components = 0, i; - _cleanup_free_ char *value = NULL; - int r; - - assert(match); - assert(_components); - assert(_n_components); - - while (*p != 0) { - const char *eq, *q; - enum bus_match_node_type t; - unsigned j = 0; - size_t value_allocated = 0; - bool escaped = false, quoted; - uint8_t u; - - /* Avahi's match rules appear to include whitespace, skip over it */ - p += strspn(p, " "); - - eq = strchr(p, '='); - if (!eq) - return -EINVAL; - - t = bus_match_node_type_from_string(p, eq - p); - if (t < 0) - return -EINVAL; - - quoted = eq[1] == '\''; - - for (q = eq + 1 + quoted;; q++) { - - if (*q == 0) { - - if (quoted) { - r = -EINVAL; - goto fail; - } else { - if (value) - value[j] = 0; - break; - } - } - - if (!escaped) { - if (*q == '\\') { - escaped = true; - continue; - } - - if (quoted) { - if (*q == '\'') { - if (value) - value[j] = 0; - break; - } - } else { - if (*q == ',') { - if (value) - value[j] = 0; - - break; - } - } - } - - if (!GREEDY_REALLOC(value, value_allocated, j + 2)) { - r = -ENOMEM; - goto fail; - } - - value[j++] = *q; - escaped = false; - } - - if (!value) { - value = strdup(""); - if (!value) { - r = -ENOMEM; - goto fail; - } - } - - if (t == BUS_MATCH_MESSAGE_TYPE) { - r = bus_message_type_from_string(value, &u); - if (r < 0) - goto fail; - - value = mfree(value); - } else - u = 0; - - if (!GREEDY_REALLOC(components, components_allocated, n_components + 1)) { - r = -ENOMEM; - goto fail; - } - - components[n_components].type = t; - components[n_components].value_str = value; - components[n_components].value_u8 = u; - n_components++; - - value = NULL; - - if (q[quoted] == 0) - break; - - if (q[quoted] != ',') { - r = -EINVAL; - goto fail; - } - - p = q + 1 + quoted; - } - - /* Order the whole thing, so that we always generate the same tree */ - qsort_safe(components, n_components, sizeof(struct bus_match_component), match_component_compare); - - /* Check for duplicates */ - for (i = 0; i+1 < n_components; i++) - if (components[i].type == components[i+1].type) { - r = -EINVAL; - goto fail; - } - - *_components = components; - *_n_components = n_components; - - return 0; - -fail: - bus_match_parse_free(components, n_components); - return r; -} - -char *bus_match_to_string(struct bus_match_component *components, unsigned n_components) { - _cleanup_fclose_ FILE *f = NULL; - char *buffer = NULL; - size_t size = 0; - unsigned i; - int r; - - if (n_components <= 0) - return strdup(""); - - assert(components); - - f = open_memstream(&buffer, &size); - if (!f) - return NULL; - - for (i = 0; i < n_components; i++) { - char buf[32]; - - if (i != 0) - fputc(',', f); - - fputs(bus_match_node_type_to_string(components[i].type, buf, sizeof(buf)), f); - fputc('=', f); - fputc('\'', f); - - if (components[i].type == BUS_MATCH_MESSAGE_TYPE) - fputs(bus_message_type_to_string(components[i].value_u8), f); - else - fputs(components[i].value_str, f); - - fputc('\'', f); - } - - r = fflush_and_check(f); - if (r < 0) - return NULL; - - return buffer; -} - -int bus_match_add( - struct bus_match_node *root, - struct bus_match_component *components, - unsigned n_components, - struct match_callback *callback) { - - unsigned i; - struct bus_match_node *n; - int r; - - assert(root); - assert(callback); - - n = root; - for (i = 0; i < n_components; i++) { - r = bus_match_add_compare_value( - n, components[i].type, - components[i].value_u8, components[i].value_str, &n); - if (r < 0) - return r; - } - - return bus_match_add_leaf(n, callback); -} - -int bus_match_remove( - struct bus_match_node *root, - struct match_callback *callback) { - - struct bus_match_node *node, *pp; - - assert(root); - assert(callback); - - node = callback->match_node; - if (!node) - return 0; - - assert(node->type == BUS_MATCH_LEAF); - - callback->match_node = NULL; - - /* Free the leaf */ - pp = node->parent; - bus_match_node_free(node); - - /* Prune the tree above */ - while (pp) { - node = pp; - pp = node->parent; - - if (!bus_match_node_maybe_free(node)) - break; - } - - return 1; -} - -int bus_match_find( - struct bus_match_node *root, - struct bus_match_component *components, - unsigned n_components, - sd_bus_message_handler_t callback, - void *userdata, - struct match_callback **ret) { - - struct bus_match_node *n, **gc; - unsigned i; - int r; - - assert(root); - assert(ret); - - gc = newa(struct bus_match_node*, n_components); - - n = root; - for (i = 0; i < n_components; i++) { - r = bus_match_find_compare_value( - n, components[i].type, - components[i].value_u8, components[i].value_str, - &n); - if (r <= 0) - return r; - - gc[i] = n; - } - - r = bus_match_find_leaf(n, callback, userdata, &n); - if (r <= 0) - return r; - - *ret = n->leaf.callback; - return 1; -} - -void bus_match_free(struct bus_match_node *node) { - struct bus_match_node *c; - - if (!node) - return; - - if (BUS_MATCH_CAN_HASH(node->type)) { - Iterator i; - - HASHMAP_FOREACH(c, node->compare.children, i) - bus_match_free(c); - - assert(hashmap_isempty(node->compare.children)); - } - - while ((c = node->child)) - bus_match_free(c); - - if (node->type != BUS_MATCH_ROOT) - bus_match_node_free(node); -} - -const char* bus_match_node_type_to_string(enum bus_match_node_type t, char buf[], size_t l) { - switch (t) { - - case BUS_MATCH_ROOT: - return "root"; - - case BUS_MATCH_VALUE: - return "value"; - - case BUS_MATCH_LEAF: - return "leaf"; - - case BUS_MATCH_MESSAGE_TYPE: - return "type"; - - case BUS_MATCH_SENDER: - return "sender"; - - case BUS_MATCH_DESTINATION: - return "destination"; - - case BUS_MATCH_INTERFACE: - return "interface"; - - case BUS_MATCH_MEMBER: - return "member"; - - case BUS_MATCH_PATH: - return "path"; - - case BUS_MATCH_PATH_NAMESPACE: - return "path_namespace"; - - case BUS_MATCH_ARG ... BUS_MATCH_ARG_LAST: - snprintf(buf, l, "arg%i", t - BUS_MATCH_ARG); - return buf; - - case BUS_MATCH_ARG_PATH ... BUS_MATCH_ARG_PATH_LAST: - snprintf(buf, l, "arg%ipath", t - BUS_MATCH_ARG_PATH); - return buf; - - case BUS_MATCH_ARG_NAMESPACE ... BUS_MATCH_ARG_NAMESPACE_LAST: - snprintf(buf, l, "arg%inamespace", t - BUS_MATCH_ARG_NAMESPACE); - return buf; - - case BUS_MATCH_ARG_HAS ... BUS_MATCH_ARG_HAS_LAST: - snprintf(buf, l, "arg%ihas", t - BUS_MATCH_ARG_HAS); - return buf; - - default: - return NULL; - } -} - -void bus_match_dump(struct bus_match_node *node, unsigned level) { - struct bus_match_node *c; - _cleanup_free_ char *pfx = NULL; - char buf[32]; - - if (!node) - return; - - pfx = strrep(" ", level); - printf("%s[%s]", strempty(pfx), bus_match_node_type_to_string(node->type, buf, sizeof(buf))); - - if (node->type == BUS_MATCH_VALUE) { - if (node->parent->type == BUS_MATCH_MESSAGE_TYPE) - printf(" <%u>\n", node->value.u8); - else - printf(" <%s>\n", node->value.str); - } else if (node->type == BUS_MATCH_ROOT) - puts(" root"); - else if (node->type == BUS_MATCH_LEAF) - printf(" %p/%p\n", node->leaf.callback->callback, container_of(node->leaf.callback, sd_bus_slot, match_callback)->userdata); - else - putchar('\n'); - - if (BUS_MATCH_CAN_HASH(node->type)) { - Iterator i; - - HASHMAP_FOREACH(c, node->compare.children, i) - bus_match_dump(c, level + 1); - } - - for (c = node->child; c; c = c->next) - bus_match_dump(c, level + 1); -} - -enum bus_match_scope bus_match_get_scope(const struct bus_match_component *components, unsigned n_components) { - bool found_driver = false; - unsigned i; - - if (n_components <= 0) - return BUS_MATCH_GENERIC; - - assert(components); - - /* Checks whether the specified match can only match the - * pseudo-service for local messages, which we detect by - * sender, interface or path. If a match is not restricted to - * local messages, then we check if it only matches on the - * driver. */ - - for (i = 0; i < n_components; i++) { - const struct bus_match_component *c = components + i; - - if (c->type == BUS_MATCH_SENDER) { - if (streq_ptr(c->value_str, "org.freedesktop.DBus.Local")) - return BUS_MATCH_LOCAL; - - if (streq_ptr(c->value_str, "org.freedesktop.DBus")) - found_driver = true; - } - - if (c->type == BUS_MATCH_INTERFACE && streq_ptr(c->value_str, "org.freedesktop.DBus.Local")) - return BUS_MATCH_LOCAL; - - if (c->type == BUS_MATCH_PATH && streq_ptr(c->value_str, "/org/freedesktop/DBus/Local")) - return BUS_MATCH_LOCAL; - } - - return found_driver ? BUS_MATCH_DRIVER : BUS_MATCH_GENERIC; - -} diff --git a/src/libsystemd/sd-bus/bus-match.h b/src/libsystemd/sd-bus/bus-match.h deleted file mode 100644 index 8cbbb63b11..0000000000 --- a/src/libsystemd/sd-bus/bus-match.h +++ /dev/null @@ -1,100 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "hashmap.h" - -enum bus_match_node_type { - BUS_MATCH_ROOT, - BUS_MATCH_VALUE, - BUS_MATCH_LEAF, - - /* The following are all different kinds of compare nodes */ - BUS_MATCH_SENDER, - BUS_MATCH_MESSAGE_TYPE, - BUS_MATCH_DESTINATION, - BUS_MATCH_INTERFACE, - BUS_MATCH_MEMBER, - BUS_MATCH_PATH, - BUS_MATCH_PATH_NAMESPACE, - BUS_MATCH_ARG, - BUS_MATCH_ARG_LAST = BUS_MATCH_ARG + 63, - BUS_MATCH_ARG_PATH, - BUS_MATCH_ARG_PATH_LAST = BUS_MATCH_ARG_PATH + 63, - BUS_MATCH_ARG_NAMESPACE, - BUS_MATCH_ARG_NAMESPACE_LAST = BUS_MATCH_ARG_NAMESPACE + 63, - BUS_MATCH_ARG_HAS, - BUS_MATCH_ARG_HAS_LAST = BUS_MATCH_ARG_HAS + 63, - _BUS_MATCH_NODE_TYPE_MAX, - _BUS_MATCH_NODE_TYPE_INVALID = -1 -}; - -struct bus_match_node { - enum bus_match_node_type type; - struct bus_match_node *parent, *next, *prev, *child; - - union { - struct { - char *str; - uint8_t u8; - } value; - struct { - struct match_callback *callback; - } leaf; - struct { - /* If this is set, then the child is NULL */ - Hashmap *children; - } compare; - }; -}; - -struct bus_match_component { - enum bus_match_node_type type; - uint8_t value_u8; - char *value_str; -}; - -enum bus_match_scope { - BUS_MATCH_GENERIC, - BUS_MATCH_LOCAL, - BUS_MATCH_DRIVER, -}; - -int bus_match_run(sd_bus *bus, struct bus_match_node *root, sd_bus_message *m); - -int bus_match_add(struct bus_match_node *root, struct bus_match_component *components, unsigned n_components, struct match_callback *callback); -int bus_match_remove(struct bus_match_node *root, struct match_callback *callback); - -int bus_match_find(struct bus_match_node *root, struct bus_match_component *components, unsigned n_components, sd_bus_message_handler_t callback, void *userdata, struct match_callback **ret); - -void bus_match_free(struct bus_match_node *node); - -void bus_match_dump(struct bus_match_node *node, unsigned level); - -const char* bus_match_node_type_to_string(enum bus_match_node_type t, char buf[], size_t l); -enum bus_match_node_type bus_match_node_type_from_string(const char *k, size_t n); - -int bus_match_parse(const char *match, struct bus_match_component **_components, unsigned *_n_components); -void bus_match_parse_free(struct bus_match_component *components, unsigned n_components); -char *bus_match_to_string(struct bus_match_component *components, unsigned n_components); - -enum bus_match_scope bus_match_get_scope(const struct bus_match_component *components, unsigned n_components); diff --git a/src/libsystemd/sd-bus/bus-message.c b/src/libsystemd/sd-bus/bus-message.c deleted file mode 100644 index 7be28c509b..0000000000 --- a/src/libsystemd/sd-bus/bus-message.c +++ /dev/null @@ -1,5949 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <fcntl.h> -#include <sys/mman.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-gvariant.h" -#include "bus-internal.h" -#include "bus-message.h" -#include "bus-signature.h" -#include "bus-type.h" -#include "bus-util.h" -#include "fd-util.h" -#include "io-util.h" -#include "memfd-util.h" -#include "string-util.h" -#include "strv.h" -#include "time-util.h" -#include "utf8.h" -#include "util.h" - -static int message_append_basic(sd_bus_message *m, char type, const void *p, const void **stored); - -static void *adjust_pointer(const void *p, void *old_base, size_t sz, void *new_base) { - - if (p == NULL) - return NULL; - - if (old_base == new_base) - return (void*) p; - - if ((uint8_t*) p < (uint8_t*) old_base) - return (void*) p; - - if ((uint8_t*) p >= (uint8_t*) old_base + sz) - return (void*) p; - - return (uint8_t*) new_base + ((uint8_t*) p - (uint8_t*) old_base); -} - -static void message_free_part(sd_bus_message *m, struct bus_body_part *part) { - assert(m); - assert(part); - - if (part->memfd >= 0) { - /* If we can reuse the memfd, try that. For that it - * can't be sealed yet. */ - - if (!part->sealed) { - assert(part->memfd_offset == 0); - assert(part->data == part->mmap_begin); - bus_kernel_push_memfd(m->bus, part->memfd, part->data, part->mapped, part->allocated); - } else { - if (part->mapped > 0) - assert_se(munmap(part->mmap_begin, part->mapped) == 0); - - safe_close(part->memfd); - } - - } else if (part->munmap_this) - munmap(part->mmap_begin, part->mapped); - else if (part->free_this) - free(part->data); - - if (part != &m->body) - free(part); -} - -static void message_reset_parts(sd_bus_message *m) { - struct bus_body_part *part; - - assert(m); - - part = &m->body; - while (m->n_body_parts > 0) { - struct bus_body_part *next = part->next; - message_free_part(m, part); - part = next; - m->n_body_parts--; - } - - m->body_end = NULL; - - m->cached_rindex_part = NULL; - m->cached_rindex_part_begin = 0; -} - -static void message_reset_containers(sd_bus_message *m) { - unsigned i; - - assert(m); - - for (i = 0; i < m->n_containers; i++) { - free(m->containers[i].signature); - free(m->containers[i].offsets); - } - - m->containers = mfree(m->containers); - - m->n_containers = m->containers_allocated = 0; - m->root_container.index = 0; -} - -static void message_free(sd_bus_message *m) { - assert(m); - - if (m->free_header) - free(m->header); - - message_reset_parts(m); - - if (m->release_kdbus) - bus_kernel_cmd_free(m->bus, (uint8_t *) m->kdbus - (uint8_t *) m->bus->kdbus_buffer); - - if (m->free_kdbus) - free(m->kdbus); - - sd_bus_unref(m->bus); - - if (m->free_fds) { - close_many(m->fds, m->n_fds); - free(m->fds); - } - - if (m->iovec != m->iovec_fixed) - free(m->iovec); - - m->destination_ptr = mfree(m->destination_ptr); - message_reset_containers(m); - free(m->root_container.signature); - free(m->root_container.offsets); - - free(m->root_container.peeked_signature); - - bus_creds_done(&m->creds); - free(m); -} - -static void *message_extend_fields(sd_bus_message *m, size_t align, size_t sz, bool add_offset) { - void *op, *np; - size_t old_size, new_size, start; - - assert(m); - - if (m->poisoned) - return NULL; - - old_size = sizeof(struct bus_header) + m->fields_size; - start = ALIGN_TO(old_size, align); - new_size = start + sz; - - if (new_size < start || - new_size > (size_t) ((uint32_t) -1)) - goto poison; - - if (old_size == new_size) - return (uint8_t*) m->header + old_size; - - if (m->free_header) { - np = realloc(m->header, ALIGN8(new_size)); - if (!np) - goto poison; - } else { - /* Initially, the header is allocated as part of of - * the sd_bus_message itself, let's replace it by - * dynamic data */ - - np = malloc(ALIGN8(new_size)); - if (!np) - goto poison; - - memcpy(np, m->header, sizeof(struct bus_header)); - } - - /* Zero out padding */ - if (start > old_size) - memzero((uint8_t*) np + old_size, start - old_size); - - op = m->header; - m->header = np; - m->fields_size = new_size - sizeof(struct bus_header); - - /* Adjust quick access pointers */ - m->path = adjust_pointer(m->path, op, old_size, m->header); - m->interface = adjust_pointer(m->interface, op, old_size, m->header); - m->member = adjust_pointer(m->member, op, old_size, m->header); - m->destination = adjust_pointer(m->destination, op, old_size, m->header); - m->sender = adjust_pointer(m->sender, op, old_size, m->header); - m->error.name = adjust_pointer(m->error.name, op, old_size, m->header); - - m->free_header = true; - - if (add_offset) { - if (m->n_header_offsets >= ELEMENTSOF(m->header_offsets)) - goto poison; - - m->header_offsets[m->n_header_offsets++] = new_size - sizeof(struct bus_header); - } - - return (uint8_t*) np + start; - -poison: - m->poisoned = true; - return NULL; -} - -static int message_append_field_string( - sd_bus_message *m, - uint64_t h, - char type, - const char *s, - const char **ret) { - - size_t l; - uint8_t *p; - - assert(m); - - /* dbus1 only allows 8bit header field ids */ - if (h > 0xFF) - return -EINVAL; - - /* dbus1 doesn't allow strings over 32bit, let's enforce this - * globally, to not risk convertability */ - l = strlen(s); - if (l > (size_t) (uint32_t) -1) - return -EINVAL; - - /* Signature "(yv)" where the variant contains "s" */ - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - - /* (field id 64bit, ((string + NUL) + NUL + signature string 's') */ - p = message_extend_fields(m, 8, 8 + l + 1 + 1 + 1, true); - if (!p) - return -ENOMEM; - - *((uint64_t*) p) = h; - memcpy(p+8, s, l); - p[8+l] = 0; - p[8+l+1] = 0; - p[8+l+2] = type; - - if (ret) - *ret = (char*) p + 8; - - } else { - /* (field id byte + (signature length + signature 's' + NUL) + (string length + string + NUL)) */ - p = message_extend_fields(m, 8, 4 + 4 + l + 1, false); - if (!p) - return -ENOMEM; - - p[0] = (uint8_t) h; - p[1] = 1; - p[2] = type; - p[3] = 0; - - ((uint32_t*) p)[1] = l; - memcpy(p + 8, s, l + 1); - - if (ret) - *ret = (char*) p + 8; - } - - return 0; -} - -static int message_append_field_signature( - sd_bus_message *m, - uint64_t h, - const char *s, - const char **ret) { - - size_t l; - uint8_t *p; - - assert(m); - - /* dbus1 only allows 8bit header field ids */ - if (h > 0xFF) - return -EINVAL; - - /* dbus1 doesn't allow signatures over 8bit, let's enforce - * this globally, to not risk convertability */ - l = strlen(s); - if (l > 255) - return -EINVAL; - - /* Signature "(yv)" where the variant contains "g" */ - - if (BUS_MESSAGE_IS_GVARIANT(m)) - /* For gvariant the serialization is the same as for normal strings */ - return message_append_field_string(m, h, 'g', s, ret); - else { - /* (field id byte + (signature length + signature 'g' + NUL) + (string length + string + NUL)) */ - p = message_extend_fields(m, 8, 4 + 1 + l + 1, false); - if (!p) - return -ENOMEM; - - p[0] = (uint8_t) h; - p[1] = 1; - p[2] = SD_BUS_TYPE_SIGNATURE; - p[3] = 0; - p[4] = l; - memcpy(p + 5, s, l + 1); - - if (ret) - *ret = (const char*) p + 5; - } - - return 0; -} - -static int message_append_field_uint32(sd_bus_message *m, uint64_t h, uint32_t x) { - uint8_t *p; - - assert(m); - - /* dbus1 only allows 8bit header field ids */ - if (h > 0xFF) - return -EINVAL; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - /* (field id 64bit + ((value + NUL + signature string 'u') */ - - p = message_extend_fields(m, 8, 8 + 4 + 1 + 1, true); - if (!p) - return -ENOMEM; - - *((uint64_t*) p) = h; - *((uint32_t*) (p + 8)) = x; - p[12] = 0; - p[13] = 'u'; - } else { - /* (field id byte + (signature length + signature 'u' + NUL) + value) */ - p = message_extend_fields(m, 8, 4 + 4, false); - if (!p) - return -ENOMEM; - - p[0] = (uint8_t) h; - p[1] = 1; - p[2] = 'u'; - p[3] = 0; - - ((uint32_t*) p)[1] = x; - } - - return 0; -} - -static int message_append_field_uint64(sd_bus_message *m, uint64_t h, uint64_t x) { - uint8_t *p; - - assert(m); - - /* dbus1 only allows 8bit header field ids */ - if (h > 0xFF) - return -EINVAL; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - /* (field id 64bit + ((value + NUL + signature string 't') */ - - p = message_extend_fields(m, 8, 8 + 8 + 1 + 1, true); - if (!p) - return -ENOMEM; - - *((uint64_t*) p) = h; - *((uint64_t*) (p + 8)) = x; - p[16] = 0; - p[17] = 't'; - } else { - /* (field id byte + (signature length + signature 't' + NUL) + 4 byte padding + value) */ - p = message_extend_fields(m, 8, 4 + 4 + 8, false); - if (!p) - return -ENOMEM; - - p[0] = (uint8_t) h; - p[1] = 1; - p[2] = 't'; - p[3] = 0; - p[4] = 0; - p[5] = 0; - p[6] = 0; - p[7] = 0; - - ((uint64_t*) p)[1] = x; - } - - return 0; -} - -static int message_append_reply_cookie(sd_bus_message *m, uint64_t cookie) { - assert(m); - - if (BUS_MESSAGE_IS_GVARIANT(m)) - return message_append_field_uint64(m, BUS_MESSAGE_HEADER_REPLY_SERIAL, cookie); - else { - /* 64bit cookies are not supported on dbus1 */ - if (cookie > 0xffffffffUL) - return -EOPNOTSUPP; - - return message_append_field_uint32(m, BUS_MESSAGE_HEADER_REPLY_SERIAL, (uint32_t) cookie); - } -} - -int bus_message_from_header( - sd_bus *bus, - void *header, - size_t header_accessible, - void *footer, - size_t footer_accessible, - size_t message_size, - int *fds, - unsigned n_fds, - const char *label, - size_t extra, - sd_bus_message **ret) { - - _cleanup_free_ sd_bus_message *m = NULL; - struct bus_header *h; - size_t a, label_sz; - - assert(bus); - assert(header || header_accessible <= 0); - assert(footer || footer_accessible <= 0); - assert(fds || n_fds <= 0); - assert(ret); - - if (header_accessible < sizeof(struct bus_header)) - return -EBADMSG; - - if (header_accessible > message_size) - return -EBADMSG; - if (footer_accessible > message_size) - return -EBADMSG; - - h = header; - if (!IN_SET(h->version, 1, 2)) - return -EBADMSG; - - if (h->type == _SD_BUS_MESSAGE_TYPE_INVALID) - return -EBADMSG; - - if (!IN_SET(h->endian, BUS_LITTLE_ENDIAN, BUS_BIG_ENDIAN)) - return -EBADMSG; - - /* Note that we are happy with unknown flags in the flags header! */ - - a = ALIGN(sizeof(sd_bus_message)) + ALIGN(extra); - - if (label) { - label_sz = strlen(label); - a += label_sz + 1; - } - - m = malloc0(a); - if (!m) - return -ENOMEM; - - m->n_ref = 1; - m->sealed = true; - m->header = header; - m->header_accessible = header_accessible; - m->footer = footer; - m->footer_accessible = footer_accessible; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - size_t ws; - - if (h->dbus2.cookie == 0) - return -EBADMSG; - - /* dbus2 derives the sizes from the message size and - the offset table at the end, since it is formatted as - gvariant "yyyyuta{tv}v". Since the message itself is a - structure with precisely to variable sized entries, - there's only one offset in the table, which marks the - end of the fields array. */ - - ws = bus_gvariant_determine_word_size(message_size, 0); - if (footer_accessible < ws) - return -EBADMSG; - - m->fields_size = bus_gvariant_read_word_le((uint8_t*) footer + footer_accessible - ws, ws); - if (ALIGN8(m->fields_size) > message_size - ws) - return -EBADMSG; - if (m->fields_size < sizeof(struct bus_header)) - return -EBADMSG; - - m->fields_size -= sizeof(struct bus_header); - m->body_size = message_size - (sizeof(struct bus_header) + ALIGN8(m->fields_size)); - } else { - if (h->dbus1.serial == 0) - return -EBADMSG; - - /* dbus1 has the sizes in the header */ - m->fields_size = BUS_MESSAGE_BSWAP32(m, h->dbus1.fields_size); - m->body_size = BUS_MESSAGE_BSWAP32(m, h->dbus1.body_size); - - if (sizeof(struct bus_header) + ALIGN8(m->fields_size) + m->body_size != message_size) - return -EBADMSG; - } - - m->fds = fds; - m->n_fds = n_fds; - - if (label) { - m->creds.label = (char*) m + ALIGN(sizeof(sd_bus_message)) + ALIGN(extra); - memcpy(m->creds.label, label, label_sz + 1); - - m->creds.mask |= SD_BUS_CREDS_SELINUX_CONTEXT; - } - - m->bus = sd_bus_ref(bus); - *ret = m; - m = NULL; - - return 0; -} - -int bus_message_from_malloc( - sd_bus *bus, - void *buffer, - size_t length, - int *fds, - unsigned n_fds, - const char *label, - sd_bus_message **ret) { - - sd_bus_message *m; - size_t sz; - int r; - - r = bus_message_from_header( - bus, - buffer, length, /* in this case the initial bytes and the final bytes are the same */ - buffer, length, - length, - fds, n_fds, - label, - 0, &m); - if (r < 0) - return r; - - sz = length - sizeof(struct bus_header) - ALIGN8(m->fields_size); - if (sz > 0) { - m->n_body_parts = 1; - m->body.data = (uint8_t*) buffer + sizeof(struct bus_header) + ALIGN8(m->fields_size); - m->body.size = sz; - m->body.sealed = true; - m->body.memfd = -1; - } - - m->n_iovec = 1; - m->iovec = m->iovec_fixed; - m->iovec[0].iov_base = buffer; - m->iovec[0].iov_len = length; - - r = bus_message_parse_fields(m); - if (r < 0) - goto fail; - - /* We take possession of the memory and fds now */ - m->free_header = true; - m->free_fds = true; - - *ret = m; - return 0; - -fail: - message_free(m); - return r; -} - -static sd_bus_message *message_new(sd_bus *bus, uint8_t type) { - sd_bus_message *m; - - assert(bus); - - m = malloc0(ALIGN(sizeof(sd_bus_message)) + sizeof(struct bus_header)); - if (!m) - return NULL; - - m->n_ref = 1; - m->header = (struct bus_header*) ((uint8_t*) m + ALIGN(sizeof(struct sd_bus_message))); - m->header->endian = BUS_NATIVE_ENDIAN; - m->header->type = type; - m->header->version = bus->message_version; - m->allow_fds = bus->can_fds || (bus->state != BUS_HELLO && bus->state != BUS_RUNNING); - m->root_container.need_offsets = BUS_MESSAGE_IS_GVARIANT(m); - m->bus = sd_bus_ref(bus); - - if (bus->allow_interactive_authorization) - m->header->flags |= BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION; - - return m; -} - -_public_ int sd_bus_message_new_signal( - sd_bus *bus, - sd_bus_message **m, - const char *path, - const char *interface, - const char *member) { - - sd_bus_message *t; - int r; - - assert_return(bus, -ENOTCONN); - assert_return(bus->state != BUS_UNSET, -ENOTCONN); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(interface_name_is_valid(interface), -EINVAL); - assert_return(member_name_is_valid(member), -EINVAL); - assert_return(m, -EINVAL); - - t = message_new(bus, SD_BUS_MESSAGE_SIGNAL); - if (!t) - return -ENOMEM; - - t->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; - - r = message_append_field_string(t, BUS_MESSAGE_HEADER_PATH, SD_BUS_TYPE_OBJECT_PATH, path, &t->path); - if (r < 0) - goto fail; - r = message_append_field_string(t, BUS_MESSAGE_HEADER_INTERFACE, SD_BUS_TYPE_STRING, interface, &t->interface); - if (r < 0) - goto fail; - r = message_append_field_string(t, BUS_MESSAGE_HEADER_MEMBER, SD_BUS_TYPE_STRING, member, &t->member); - if (r < 0) - goto fail; - - *m = t; - return 0; - -fail: - sd_bus_message_unref(t); - return r; -} - -_public_ int sd_bus_message_new_method_call( - sd_bus *bus, - sd_bus_message **m, - const char *destination, - const char *path, - const char *interface, - const char *member) { - - sd_bus_message *t; - int r; - - assert_return(bus, -ENOTCONN); - assert_return(bus->state != BUS_UNSET, -ENOTCONN); - assert_return(!destination || service_name_is_valid(destination), -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(!interface || interface_name_is_valid(interface), -EINVAL); - assert_return(member_name_is_valid(member), -EINVAL); - assert_return(m, -EINVAL); - - t = message_new(bus, SD_BUS_MESSAGE_METHOD_CALL); - if (!t) - return -ENOMEM; - - r = message_append_field_string(t, BUS_MESSAGE_HEADER_PATH, SD_BUS_TYPE_OBJECT_PATH, path, &t->path); - if (r < 0) - goto fail; - r = message_append_field_string(t, BUS_MESSAGE_HEADER_MEMBER, SD_BUS_TYPE_STRING, member, &t->member); - if (r < 0) - goto fail; - - if (interface) { - r = message_append_field_string(t, BUS_MESSAGE_HEADER_INTERFACE, SD_BUS_TYPE_STRING, interface, &t->interface); - if (r < 0) - goto fail; - } - - if (destination) { - r = message_append_field_string(t, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, destination, &t->destination); - if (r < 0) - goto fail; - } - - *m = t; - return 0; - -fail: - message_free(t); - return r; -} - -static int message_new_reply( - sd_bus_message *call, - uint8_t type, - sd_bus_message **m) { - - sd_bus_message *t; - int r; - - assert_return(call, -EINVAL); - assert_return(call->sealed, -EPERM); - assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); - assert_return(call->bus->state != BUS_UNSET, -ENOTCONN); - assert_return(m, -EINVAL); - - t = message_new(call->bus, type); - if (!t) - return -ENOMEM; - - t->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; - t->reply_cookie = BUS_MESSAGE_COOKIE(call); - if (t->reply_cookie == 0) - return -EOPNOTSUPP; - - r = message_append_reply_cookie(t, t->reply_cookie); - if (r < 0) - goto fail; - - if (call->sender) { - r = message_append_field_string(t, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, call->sender, &t->destination); - if (r < 0) - goto fail; - } - - t->dont_send = !!(call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED); - t->enforced_reply_signature = call->enforced_reply_signature; - - *m = t; - return 0; - -fail: - message_free(t); - return r; -} - -_public_ int sd_bus_message_new_method_return( - sd_bus_message *call, - sd_bus_message **m) { - - return message_new_reply(call, SD_BUS_MESSAGE_METHOD_RETURN, m); -} - -_public_ int sd_bus_message_new_method_error( - sd_bus_message *call, - sd_bus_message **m, - const sd_bus_error *e) { - - sd_bus_message *t; - int r; - - assert_return(sd_bus_error_is_set(e), -EINVAL); - assert_return(m, -EINVAL); - - r = message_new_reply(call, SD_BUS_MESSAGE_METHOD_ERROR, &t); - if (r < 0) - return r; - - r = message_append_field_string(t, BUS_MESSAGE_HEADER_ERROR_NAME, SD_BUS_TYPE_STRING, e->name, &t->error.name); - if (r < 0) - goto fail; - - if (e->message) { - r = message_append_basic(t, SD_BUS_TYPE_STRING, e->message, (const void**) &t->error.message); - if (r < 0) - goto fail; - } - - t->error._need_free = -1; - - *m = t; - return 0; - -fail: - message_free(t); - return r; -} - -_public_ int sd_bus_message_new_method_errorf( - sd_bus_message *call, - sd_bus_message **m, - const char *name, - const char *format, - ...) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - va_list ap; - - assert_return(name, -EINVAL); - assert_return(m, -EINVAL); - - va_start(ap, format); - bus_error_setfv(&error, name, format, ap); - va_end(ap); - - return sd_bus_message_new_method_error(call, m, &error); -} - -_public_ int sd_bus_message_new_method_errno( - sd_bus_message *call, - sd_bus_message **m, - int error, - const sd_bus_error *p) { - - _cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL; - - if (sd_bus_error_is_set(p)) - return sd_bus_message_new_method_error(call, m, p); - - sd_bus_error_set_errno(&berror, error); - - return sd_bus_message_new_method_error(call, m, &berror); -} - -_public_ int sd_bus_message_new_method_errnof( - sd_bus_message *call, - sd_bus_message **m, - int error, - const char *format, - ...) { - - _cleanup_(sd_bus_error_free) sd_bus_error berror = SD_BUS_ERROR_NULL; - va_list ap; - - va_start(ap, format); - sd_bus_error_set_errnofv(&berror, error, format, ap); - va_end(ap); - - return sd_bus_message_new_method_error(call, m, &berror); -} - -void bus_message_set_sender_local(sd_bus *bus, sd_bus_message *m) { - assert(bus); - assert(m); - - m->sender = m->creds.unique_name = (char*) "org.freedesktop.DBus.Local"; - m->creds.well_known_names_local = true; - m->creds.mask |= (SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES) & bus->creds_mask; -} - -void bus_message_set_sender_driver(sd_bus *bus, sd_bus_message *m) { - assert(bus); - assert(m); - - m->sender = m->creds.unique_name = (char*) "org.freedesktop.DBus"; - m->creds.well_known_names_driver = true; - m->creds.mask |= (SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES) & bus->creds_mask; -} - -int bus_message_new_synthetic_error( - sd_bus *bus, - uint64_t cookie, - const sd_bus_error *e, - sd_bus_message **m) { - - sd_bus_message *t; - int r; - - assert(bus); - assert(sd_bus_error_is_set(e)); - assert(m); - - t = message_new(bus, SD_BUS_MESSAGE_METHOD_ERROR); - if (!t) - return -ENOMEM; - - t->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; - t->reply_cookie = cookie; - - r = message_append_reply_cookie(t, t->reply_cookie); - if (r < 0) - goto fail; - - if (bus && bus->unique_name) { - r = message_append_field_string(t, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, bus->unique_name, &t->destination); - if (r < 0) - goto fail; - } - - r = message_append_field_string(t, BUS_MESSAGE_HEADER_ERROR_NAME, SD_BUS_TYPE_STRING, e->name, &t->error.name); - if (r < 0) - goto fail; - - if (e->message) { - r = message_append_basic(t, SD_BUS_TYPE_STRING, e->message, (const void**) &t->error.message); - if (r < 0) - goto fail; - } - - t->error._need_free = -1; - - bus_message_set_sender_driver(bus, t); - - *m = t; - return 0; - -fail: - message_free(t); - return r; -} - -_public_ sd_bus_message* sd_bus_message_ref(sd_bus_message *m) { - - if (!m) - return NULL; - - assert(m->n_ref > 0); - m->n_ref++; - - return m; -} - -_public_ sd_bus_message* sd_bus_message_unref(sd_bus_message *m) { - - if (!m) - return NULL; - - assert(m->n_ref > 0); - m->n_ref--; - - if (m->n_ref > 0) - return NULL; - - message_free(m); - return NULL; -} - -_public_ int sd_bus_message_get_type(sd_bus_message *m, uint8_t *type) { - assert_return(m, -EINVAL); - assert_return(type, -EINVAL); - - *type = m->header->type; - return 0; -} - -_public_ int sd_bus_message_get_cookie(sd_bus_message *m, uint64_t *cookie) { - uint64_t c; - - assert_return(m, -EINVAL); - assert_return(cookie, -EINVAL); - - c = BUS_MESSAGE_COOKIE(m); - if (c == 0) - return -ENODATA; - - *cookie = BUS_MESSAGE_COOKIE(m); - return 0; -} - -_public_ int sd_bus_message_get_reply_cookie(sd_bus_message *m, uint64_t *cookie) { - assert_return(m, -EINVAL); - assert_return(cookie, -EINVAL); - - if (m->reply_cookie == 0) - return -ENODATA; - - *cookie = m->reply_cookie; - return 0; -} - -_public_ int sd_bus_message_get_expect_reply(sd_bus_message *m) { - assert_return(m, -EINVAL); - - return m->header->type == SD_BUS_MESSAGE_METHOD_CALL && - !(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED); -} - -_public_ int sd_bus_message_get_auto_start(sd_bus_message *m) { - assert_return(m, -EINVAL); - - return !(m->header->flags & BUS_MESSAGE_NO_AUTO_START); -} - -_public_ int sd_bus_message_get_allow_interactive_authorization(sd_bus_message *m) { - assert_return(m, -EINVAL); - - return m->header->type == SD_BUS_MESSAGE_METHOD_CALL && - (m->header->flags & BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION); -} - -_public_ const char *sd_bus_message_get_path(sd_bus_message *m) { - assert_return(m, NULL); - - return m->path; -} - -_public_ const char *sd_bus_message_get_interface(sd_bus_message *m) { - assert_return(m, NULL); - - return m->interface; -} - -_public_ const char *sd_bus_message_get_member(sd_bus_message *m) { - assert_return(m, NULL); - - return m->member; -} - -_public_ const char *sd_bus_message_get_destination(sd_bus_message *m) { - assert_return(m, NULL); - - return m->destination; -} - -_public_ const char *sd_bus_message_get_sender(sd_bus_message *m) { - assert_return(m, NULL); - - return m->sender; -} - -_public_ const sd_bus_error *sd_bus_message_get_error(sd_bus_message *m) { - assert_return(m, NULL); - - if (!sd_bus_error_is_set(&m->error)) - return NULL; - - return &m->error; -} - -_public_ int sd_bus_message_get_monotonic_usec(sd_bus_message *m, uint64_t *usec) { - assert_return(m, -EINVAL); - assert_return(usec, -EINVAL); - - if (m->monotonic <= 0) - return -ENODATA; - - *usec = m->monotonic; - return 0; -} - -_public_ int sd_bus_message_get_realtime_usec(sd_bus_message *m, uint64_t *usec) { - assert_return(m, -EINVAL); - assert_return(usec, -EINVAL); - - if (m->realtime <= 0) - return -ENODATA; - - *usec = m->realtime; - return 0; -} - -_public_ int sd_bus_message_get_seqnum(sd_bus_message *m, uint64_t *seqnum) { - assert_return(m, -EINVAL); - assert_return(seqnum, -EINVAL); - - if (m->seqnum <= 0) - return -ENODATA; - - *seqnum = m->seqnum; - return 0; -} - -_public_ sd_bus_creds *sd_bus_message_get_creds(sd_bus_message *m) { - assert_return(m, NULL); - - if (m->creds.mask == 0) - return NULL; - - return &m->creds; -} - -_public_ int sd_bus_message_is_signal( - sd_bus_message *m, - const char *interface, - const char *member) { - - assert_return(m, -EINVAL); - - if (m->header->type != SD_BUS_MESSAGE_SIGNAL) - return 0; - - if (interface && (!m->interface || !streq(m->interface, interface))) - return 0; - - if (member && (!m->member || !streq(m->member, member))) - return 0; - - return 1; -} - -_public_ int sd_bus_message_is_method_call( - sd_bus_message *m, - const char *interface, - const char *member) { - - assert_return(m, -EINVAL); - - if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) - return 0; - - if (interface && (!m->interface || !streq(m->interface, interface))) - return 0; - - if (member && (!m->member || !streq(m->member, member))) - return 0; - - return 1; -} - -_public_ int sd_bus_message_is_method_error(sd_bus_message *m, const char *name) { - assert_return(m, -EINVAL); - - if (m->header->type != SD_BUS_MESSAGE_METHOD_ERROR) - return 0; - - if (name && (!m->error.name || !streq(m->error.name, name))) - return 0; - - return 1; -} - -_public_ int sd_bus_message_set_expect_reply(sd_bus_message *m, int b) { - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EPERM); - - if (b) - m->header->flags &= ~BUS_MESSAGE_NO_REPLY_EXPECTED; - else - m->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; - - return 0; -} - -_public_ int sd_bus_message_set_auto_start(sd_bus_message *m, int b) { - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - if (b) - m->header->flags &= ~BUS_MESSAGE_NO_AUTO_START; - else - m->header->flags |= BUS_MESSAGE_NO_AUTO_START; - - return 0; -} - -_public_ int sd_bus_message_set_allow_interactive_authorization(sd_bus_message *m, int b) { - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - if (b) - m->header->flags |= BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION; - else - m->header->flags &= ~BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION; - - return 0; -} - -static struct bus_container *message_get_container(sd_bus_message *m) { - assert(m); - - if (m->n_containers == 0) - return &m->root_container; - - assert(m->containers); - return m->containers + m->n_containers - 1; -} - -struct bus_body_part *message_append_part(sd_bus_message *m) { - struct bus_body_part *part; - - assert(m); - - if (m->poisoned) - return NULL; - - if (m->n_body_parts <= 0) { - part = &m->body; - zero(*part); - } else { - assert(m->body_end); - - part = new0(struct bus_body_part, 1); - if (!part) { - m->poisoned = true; - return NULL; - } - - m->body_end->next = part; - } - - part->memfd = -1; - m->body_end = part; - m->n_body_parts ++; - - return part; -} - -static void part_zero(struct bus_body_part *part, size_t sz) { - assert(part); - assert(sz > 0); - assert(sz < 8); - - /* All other fields can be left in their defaults */ - assert(!part->data); - assert(part->memfd < 0); - - part->size = sz; - part->is_zero = true; - part->sealed = true; -} - -static int part_make_space( - struct sd_bus_message *m, - struct bus_body_part *part, - size_t sz, - void **q) { - - void *n; - int r; - - assert(m); - assert(part); - assert(!part->sealed); - - if (m->poisoned) - return -ENOMEM; - - if (!part->data && part->memfd < 0) { - part->memfd = bus_kernel_pop_memfd(m->bus, &part->data, &part->mapped, &part->allocated); - part->mmap_begin = part->data; - } - - if (part->memfd >= 0) { - - if (part->allocated == 0 || sz > part->allocated) { - uint64_t new_allocated; - - new_allocated = PAGE_ALIGN(sz > 0 ? 2 * sz : 1); - r = memfd_set_size(part->memfd, new_allocated); - if (r < 0) { - m->poisoned = true; - return r; - } - - part->allocated = new_allocated; - } - - if (!part->data || sz > part->mapped) { - size_t psz; - - psz = PAGE_ALIGN(sz > 0 ? sz : 1); - if (part->mapped <= 0) - n = mmap(NULL, psz, PROT_READ|PROT_WRITE, MAP_SHARED, part->memfd, 0); - else - n = mremap(part->mmap_begin, part->mapped, psz, MREMAP_MAYMOVE); - - if (n == MAP_FAILED) { - m->poisoned = true; - return -errno; - } - - part->mmap_begin = part->data = n; - part->mapped = psz; - part->memfd_offset = 0; - } - - part->munmap_this = true; - } else { - if (part->allocated == 0 || sz > part->allocated) { - size_t new_allocated; - - new_allocated = sz > 0 ? 2 * sz : 64; - n = realloc(part->data, new_allocated); - if (!n) { - m->poisoned = true; - return -ENOMEM; - } - - part->data = n; - part->allocated = new_allocated; - part->free_this = true; - } - } - - if (q) - *q = part->data ? (uint8_t*) part->data + part->size : NULL; - - part->size = sz; - return 0; -} - -static int message_add_offset(sd_bus_message *m, size_t offset) { - struct bus_container *c; - - assert(m); - assert(BUS_MESSAGE_IS_GVARIANT(m)); - - /* Add offset to current container, unless this is the first - * item in it, which will have the 0 offset, which we can - * ignore. */ - c = message_get_container(m); - - if (!c->need_offsets) - return 0; - - if (!GREEDY_REALLOC(c->offsets, c->offsets_allocated, c->n_offsets + 1)) - return -ENOMEM; - - c->offsets[c->n_offsets++] = offset; - return 0; -} - -static void message_extend_containers(sd_bus_message *m, size_t expand) { - struct bus_container *c; - - assert(m); - - if (expand <= 0) - return; - - /* Update counters */ - for (c = m->containers; c < m->containers + m->n_containers; c++) { - - if (c->array_size) - *c->array_size += expand; - } -} - -static void *message_extend_body( - sd_bus_message *m, - size_t align, - size_t sz, - bool add_offset, - bool force_inline) { - - size_t start_body, end_body, padding, added; - void *p; - int r; - - assert(m); - assert(align > 0); - assert(!m->sealed); - - if (m->poisoned) - return NULL; - - start_body = ALIGN_TO((size_t) m->body_size, align); - end_body = start_body + sz; - - padding = start_body - m->body_size; - added = padding + sz; - - /* Check for 32bit overflows */ - if (end_body > (size_t) ((uint32_t) -1) || - end_body < start_body) { - m->poisoned = true; - return NULL; - } - - if (added > 0) { - struct bus_body_part *part = NULL; - bool add_new_part; - - add_new_part = - m->n_body_parts <= 0 || - m->body_end->sealed || - (padding != ALIGN_TO(m->body_end->size, align) - m->body_end->size) || - (force_inline && m->body_end->size > MEMFD_MIN_SIZE); /* if this must be an inlined extension, let's create a new part if the previous part is large enough to be inlined */ - - if (add_new_part) { - if (padding > 0) { - part = message_append_part(m); - if (!part) - return NULL; - - part_zero(part, padding); - } - - part = message_append_part(m); - if (!part) - return NULL; - - r = part_make_space(m, part, sz, &p); - if (r < 0) - return NULL; - } else { - struct bus_container *c; - void *op; - size_t os, start_part, end_part; - - part = m->body_end; - op = part->data; - os = part->size; - - start_part = ALIGN_TO(part->size, align); - end_part = start_part + sz; - - r = part_make_space(m, part, end_part, &p); - if (r < 0) - return NULL; - - if (padding > 0) { - memzero(p, padding); - p = (uint8_t*) p + padding; - } - - /* Readjust pointers */ - for (c = m->containers; c < m->containers + m->n_containers; c++) - c->array_size = adjust_pointer(c->array_size, op, os, part->data); - - m->error.message = (const char*) adjust_pointer(m->error.message, op, os, part->data); - } - } else - /* Return something that is not NULL and is aligned */ - p = (uint8_t *) NULL + align; - - m->body_size = end_body; - message_extend_containers(m, added); - - if (add_offset) { - r = message_add_offset(m, end_body); - if (r < 0) { - m->poisoned = true; - return NULL; - } - } - - return p; -} - -static int message_push_fd(sd_bus_message *m, int fd) { - int *f, copy; - - assert(m); - - if (fd < 0) - return -EINVAL; - - if (!m->allow_fds) - return -EOPNOTSUPP; - - copy = fcntl(fd, F_DUPFD_CLOEXEC, 3); - if (copy < 0) - return -errno; - - f = realloc(m->fds, sizeof(int) * (m->n_fds + 1)); - if (!f) { - m->poisoned = true; - safe_close(copy); - return -ENOMEM; - } - - m->fds = f; - m->fds[m->n_fds] = copy; - m->free_fds = true; - - return copy; -} - -int message_append_basic(sd_bus_message *m, char type, const void *p, const void **stored) { - _cleanup_close_ int fd = -1; - struct bus_container *c; - ssize_t align, sz; - void *a; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(bus_type_is_basic(type), -EINVAL); - assert_return(!m->poisoned, -ESTALE); - - c = message_get_container(m); - - if (c->signature && c->signature[c->index]) { - /* Container signature is already set */ - - if (c->signature[c->index] != type) - return -ENXIO; - } else { - char *e; - - /* Maybe we can append to the signature? But only if this is the top-level container */ - if (c->enclosing != 0) - return -ENXIO; - - e = strextend(&c->signature, CHAR_TO_STR(type), NULL); - if (!e) { - m->poisoned = true; - return -ENOMEM; - } - } - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - uint8_t u8; - uint32_t u32; - - switch (type) { - - case SD_BUS_TYPE_SIGNATURE: - case SD_BUS_TYPE_STRING: - p = strempty(p); - - /* Fall through... */ - case SD_BUS_TYPE_OBJECT_PATH: - if (!p) - return -EINVAL; - - align = 1; - sz = strlen(p) + 1; - break; - - case SD_BUS_TYPE_BOOLEAN: - - u8 = p && *(int*) p; - p = &u8; - - align = sz = 1; - break; - - case SD_BUS_TYPE_UNIX_FD: - - if (!p) - return -EINVAL; - - fd = message_push_fd(m, *(int*) p); - if (fd < 0) - return fd; - - u32 = m->n_fds; - p = &u32; - - align = sz = 4; - break; - - default: - align = bus_gvariant_get_alignment(CHAR_TO_STR(type)); - sz = bus_gvariant_get_size(CHAR_TO_STR(type)); - break; - } - - assert(align > 0); - assert(sz > 0); - - a = message_extend_body(m, align, sz, true, false); - if (!a) - return -ENOMEM; - - memcpy(a, p, sz); - - if (stored) - *stored = (const uint8_t*) a; - - } else { - uint32_t u32; - - switch (type) { - - case SD_BUS_TYPE_STRING: - /* To make things easy we'll serialize a NULL string - * into the empty string */ - p = strempty(p); - - /* Fall through... */ - case SD_BUS_TYPE_OBJECT_PATH: - - if (!p) - return -EINVAL; - - align = 4; - sz = 4 + strlen(p) + 1; - break; - - case SD_BUS_TYPE_SIGNATURE: - - p = strempty(p); - - align = 1; - sz = 1 + strlen(p) + 1; - break; - - case SD_BUS_TYPE_BOOLEAN: - - u32 = p && *(int*) p; - p = &u32; - - align = sz = 4; - break; - - case SD_BUS_TYPE_UNIX_FD: - - if (!p) - return -EINVAL; - - fd = message_push_fd(m, *(int*) p); - if (fd < 0) - return fd; - - u32 = m->n_fds; - p = &u32; - - align = sz = 4; - break; - - default: - align = bus_type_get_alignment(type); - sz = bus_type_get_size(type); - break; - } - - assert(align > 0); - assert(sz > 0); - - a = message_extend_body(m, align, sz, false, false); - if (!a) - return -ENOMEM; - - if (type == SD_BUS_TYPE_STRING || type == SD_BUS_TYPE_OBJECT_PATH) { - *(uint32_t*) a = sz - 5; - memcpy((uint8_t*) a + 4, p, sz - 4); - - if (stored) - *stored = (const uint8_t*) a + 4; - - } else if (type == SD_BUS_TYPE_SIGNATURE) { - *(uint8_t*) a = sz - 2; - memcpy((uint8_t*) a + 1, p, sz - 1); - - if (stored) - *stored = (const uint8_t*) a + 1; - } else { - memcpy(a, p, sz); - - if (stored) - *stored = a; - } - } - - if (type == SD_BUS_TYPE_UNIX_FD) - m->n_fds ++; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index++; - - fd = -1; - return 0; -} - -_public_ int sd_bus_message_append_basic(sd_bus_message *m, char type, const void *p) { - return message_append_basic(m, type, p, NULL); -} - -_public_ int sd_bus_message_append_string_space( - sd_bus_message *m, - size_t size, - char **s) { - - struct bus_container *c; - void *a; - - assert_return(m, -EINVAL); - assert_return(s, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(!m->poisoned, -ESTALE); - - c = message_get_container(m); - - if (c->signature && c->signature[c->index]) { - /* Container signature is already set */ - - if (c->signature[c->index] != SD_BUS_TYPE_STRING) - return -ENXIO; - } else { - char *e; - - /* Maybe we can append to the signature? But only if this is the top-level container */ - if (c->enclosing != 0) - return -ENXIO; - - e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_STRING), NULL); - if (!e) { - m->poisoned = true; - return -ENOMEM; - } - } - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - a = message_extend_body(m, 1, size + 1, true, false); - if (!a) - return -ENOMEM; - - *s = a; - } else { - a = message_extend_body(m, 4, 4 + size + 1, false, false); - if (!a) - return -ENOMEM; - - *(uint32_t*) a = size; - *s = (char*) a + 4; - } - - (*s)[size] = 0; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index++; - - return 0; -} - -_public_ int sd_bus_message_append_string_iovec( - sd_bus_message *m, - const struct iovec *iov, - unsigned n) { - - size_t size; - unsigned i; - char *p; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(iov || n == 0, -EINVAL); - assert_return(!m->poisoned, -ESTALE); - - size = IOVEC_TOTAL_SIZE(iov, n); - - r = sd_bus_message_append_string_space(m, size, &p); - if (r < 0) - return r; - - for (i = 0; i < n; i++) { - - if (iov[i].iov_base) - memcpy(p, iov[i].iov_base, iov[i].iov_len); - else - memset(p, ' ', iov[i].iov_len); - - p += iov[i].iov_len; - } - - return 0; -} - -static int bus_message_open_array( - sd_bus_message *m, - struct bus_container *c, - const char *contents, - uint32_t **array_size, - size_t *begin, - bool *need_offsets) { - - unsigned nindex; - int alignment, r; - - assert(m); - assert(c); - assert(contents); - assert(array_size); - assert(begin); - assert(need_offsets); - - if (!signature_is_single(contents, true)) - return -EINVAL; - - if (c->signature && c->signature[c->index]) { - - /* Verify the existing signature */ - - if (c->signature[c->index] != SD_BUS_TYPE_ARRAY) - return -ENXIO; - - if (!startswith(c->signature + c->index + 1, contents)) - return -ENXIO; - - nindex = c->index + 1 + strlen(contents); - } else { - char *e; - - if (c->enclosing != 0) - return -ENXIO; - - /* Extend the existing signature */ - - e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_ARRAY), contents, NULL); - if (!e) { - m->poisoned = true; - return -ENOMEM; - } - - nindex = e - c->signature; - } - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - alignment = bus_gvariant_get_alignment(contents); - if (alignment < 0) - return alignment; - - /* Add alignment padding and add to offset list */ - if (!message_extend_body(m, alignment, 0, false, false)) - return -ENOMEM; - - r = bus_gvariant_is_fixed_size(contents); - if (r < 0) - return r; - - *begin = m->body_size; - *need_offsets = r == 0; - } else { - void *a, *op; - size_t os; - struct bus_body_part *o; - - alignment = bus_type_get_alignment(contents[0]); - if (alignment < 0) - return alignment; - - a = message_extend_body(m, 4, 4, false, false); - if (!a) - return -ENOMEM; - - o = m->body_end; - op = m->body_end->data; - os = m->body_end->size; - - /* Add alignment between size and first element */ - if (!message_extend_body(m, alignment, 0, false, false)) - return -ENOMEM; - - /* location of array size might have changed so let's readjust a */ - if (o == m->body_end) - a = adjust_pointer(a, op, os, m->body_end->data); - - *(uint32_t*) a = 0; - *array_size = a; - } - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index = nindex; - - return 0; -} - -static int bus_message_open_variant( - sd_bus_message *m, - struct bus_container *c, - const char *contents) { - - assert(m); - assert(c); - assert(contents); - - if (!signature_is_single(contents, false)) - return -EINVAL; - - if (*contents == SD_BUS_TYPE_DICT_ENTRY_BEGIN) - return -EINVAL; - - if (c->signature && c->signature[c->index]) { - - if (c->signature[c->index] != SD_BUS_TYPE_VARIANT) - return -ENXIO; - - } else { - char *e; - - if (c->enclosing != 0) - return -ENXIO; - - e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_VARIANT), NULL); - if (!e) { - m->poisoned = true; - return -ENOMEM; - } - } - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - /* Variants are always aligned to 8 */ - - if (!message_extend_body(m, 8, 0, false, false)) - return -ENOMEM; - - } else { - size_t l; - void *a; - - l = strlen(contents); - a = message_extend_body(m, 1, 1 + l + 1, false, false); - if (!a) - return -ENOMEM; - - *(uint8_t*) a = l; - memcpy((uint8_t*) a + 1, contents, l + 1); - } - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index++; - - return 0; -} - -static int bus_message_open_struct( - sd_bus_message *m, - struct bus_container *c, - const char *contents, - size_t *begin, - bool *need_offsets) { - - size_t nindex; - int r; - - assert(m); - assert(c); - assert(contents); - assert(begin); - assert(need_offsets); - - if (!signature_is_valid(contents, false)) - return -EINVAL; - - if (c->signature && c->signature[c->index]) { - size_t l; - - l = strlen(contents); - - if (c->signature[c->index] != SD_BUS_TYPE_STRUCT_BEGIN || - !startswith(c->signature + c->index + 1, contents) || - c->signature[c->index + 1 + l] != SD_BUS_TYPE_STRUCT_END) - return -ENXIO; - - nindex = c->index + 1 + l + 1; - } else { - char *e; - - if (c->enclosing != 0) - return -ENXIO; - - e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_STRUCT_BEGIN), contents, CHAR_TO_STR(SD_BUS_TYPE_STRUCT_END), NULL); - if (!e) { - m->poisoned = true; - return -ENOMEM; - } - - nindex = e - c->signature; - } - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - int alignment; - - alignment = bus_gvariant_get_alignment(contents); - if (alignment < 0) - return alignment; - - if (!message_extend_body(m, alignment, 0, false, false)) - return -ENOMEM; - - r = bus_gvariant_is_fixed_size(contents); - if (r < 0) - return r; - - *begin = m->body_size; - *need_offsets = r == 0; - } else { - /* Align contents to 8 byte boundary */ - if (!message_extend_body(m, 8, 0, false, false)) - return -ENOMEM; - } - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index = nindex; - - return 0; -} - -static int bus_message_open_dict_entry( - sd_bus_message *m, - struct bus_container *c, - const char *contents, - size_t *begin, - bool *need_offsets) { - - int r; - - assert(m); - assert(c); - assert(contents); - assert(begin); - assert(need_offsets); - - if (!signature_is_pair(contents)) - return -EINVAL; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - return -ENXIO; - - if (c->signature && c->signature[c->index]) { - size_t l; - - l = strlen(contents); - - if (c->signature[c->index] != SD_BUS_TYPE_DICT_ENTRY_BEGIN || - !startswith(c->signature + c->index + 1, contents) || - c->signature[c->index + 1 + l] != SD_BUS_TYPE_DICT_ENTRY_END) - return -ENXIO; - } else - return -ENXIO; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - int alignment; - - alignment = bus_gvariant_get_alignment(contents); - if (alignment < 0) - return alignment; - - if (!message_extend_body(m, alignment, 0, false, false)) - return -ENOMEM; - - r = bus_gvariant_is_fixed_size(contents); - if (r < 0) - return r; - - *begin = m->body_size; - *need_offsets = r == 0; - } else { - /* Align contents to 8 byte boundary */ - if (!message_extend_body(m, 8, 0, false, false)) - return -ENOMEM; - } - - return 0; -} - -_public_ int sd_bus_message_open_container( - sd_bus_message *m, - char type, - const char *contents) { - - struct bus_container *c, *w; - uint32_t *array_size = NULL; - char *signature; - size_t before, begin = 0; - bool need_offsets = false; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(contents, -EINVAL); - assert_return(!m->poisoned, -ESTALE); - - /* Make sure we have space for one more container */ - if (!GREEDY_REALLOC(m->containers, m->containers_allocated, m->n_containers + 1)) { - m->poisoned = true; - return -ENOMEM; - } - - c = message_get_container(m); - - signature = strdup(contents); - if (!signature) { - m->poisoned = true; - return -ENOMEM; - } - - /* Save old index in the parent container, in case we have to - * abort this container */ - c->saved_index = c->index; - before = m->body_size; - - if (type == SD_BUS_TYPE_ARRAY) - r = bus_message_open_array(m, c, contents, &array_size, &begin, &need_offsets); - else if (type == SD_BUS_TYPE_VARIANT) - r = bus_message_open_variant(m, c, contents); - else if (type == SD_BUS_TYPE_STRUCT) - r = bus_message_open_struct(m, c, contents, &begin, &need_offsets); - else if (type == SD_BUS_TYPE_DICT_ENTRY) - r = bus_message_open_dict_entry(m, c, contents, &begin, &need_offsets); - else - r = -EINVAL; - - if (r < 0) { - free(signature); - return r; - } - - /* OK, let's fill it in */ - w = m->containers + m->n_containers++; - w->enclosing = type; - w->signature = signature; - w->index = 0; - w->array_size = array_size; - w->before = before; - w->begin = begin; - w->n_offsets = w->offsets_allocated = 0; - w->offsets = NULL; - w->need_offsets = need_offsets; - - return 0; -} - -static int bus_message_close_array(sd_bus_message *m, struct bus_container *c) { - - assert(m); - assert(c); - - if (!BUS_MESSAGE_IS_GVARIANT(m)) - return 0; - - if (c->need_offsets) { - size_t payload, sz, i; - uint8_t *a; - - /* Variable-width arrays */ - - payload = c->n_offsets > 0 ? c->offsets[c->n_offsets-1] - c->begin : 0; - sz = bus_gvariant_determine_word_size(payload, c->n_offsets); - - a = message_extend_body(m, 1, sz * c->n_offsets, true, false); - if (!a) - return -ENOMEM; - - for (i = 0; i < c->n_offsets; i++) - bus_gvariant_write_word_le(a + sz*i, sz, c->offsets[i] - c->begin); - } else { - void *a; - - /* Fixed-width or empty arrays */ - - a = message_extend_body(m, 1, 0, true, false); /* let's add offset to parent */ - if (!a) - return -ENOMEM; - } - - return 0; -} - -static int bus_message_close_variant(sd_bus_message *m, struct bus_container *c) { - uint8_t *a; - size_t l; - - assert(m); - assert(c); - assert(c->signature); - - if (!BUS_MESSAGE_IS_GVARIANT(m)) - return 0; - - l = strlen(c->signature); - - a = message_extend_body(m, 1, 1 + l, true, false); - if (!a) - return -ENOMEM; - - a[0] = 0; - memcpy(a+1, c->signature, l); - - return 0; -} - -static int bus_message_close_struct(sd_bus_message *m, struct bus_container *c, bool add_offset) { - bool fixed_size = true; - size_t n_variable = 0; - unsigned i = 0; - const char *p; - uint8_t *a; - int r; - - assert(m); - assert(c); - - if (!BUS_MESSAGE_IS_GVARIANT(m)) - return 0; - - p = strempty(c->signature); - while (*p != 0) { - size_t n; - - r = signature_element_length(p, &n); - if (r < 0) - return r; - else { - char t[n+1]; - - memcpy(t, p, n); - t[n] = 0; - - r = bus_gvariant_is_fixed_size(t); - if (r < 0) - return r; - } - - assert(!c->need_offsets || i <= c->n_offsets); - - /* We need to add an offset for each item that has a - * variable size and that is not the last one in the - * list */ - if (r == 0) - fixed_size = false; - if (r == 0 && p[n] != 0) - n_variable++; - - i++; - p += n; - } - - assert(!c->need_offsets || i == c->n_offsets); - assert(c->need_offsets || n_variable == 0); - - if (isempty(c->signature)) { - /* The unary type is encoded as fixed 1 byte padding */ - a = message_extend_body(m, 1, 1, add_offset, false); - if (!a) - return -ENOMEM; - - *a = 0; - } else if (n_variable <= 0) { - int alignment = 1; - - /* Structures with fixed-size members only have to be - * fixed-size themselves. But gvariant requires all fixed-size - * elements to be sized a multiple of their alignment. Hence, - * we must *always* add final padding after the last member so - * the overall size of the structure is properly aligned. */ - if (fixed_size) - alignment = bus_gvariant_get_alignment(strempty(c->signature)); - - assert(alignment > 0); - - a = message_extend_body(m, alignment, 0, add_offset, false); - if (!a) - return -ENOMEM; - } else { - size_t sz; - unsigned j; - - assert(c->offsets[c->n_offsets-1] == m->body_size); - - sz = bus_gvariant_determine_word_size(m->body_size - c->begin, n_variable); - - a = message_extend_body(m, 1, sz * n_variable, add_offset, false); - if (!a) - return -ENOMEM; - - p = strempty(c->signature); - for (i = 0, j = 0; i < c->n_offsets; i++) { - unsigned k; - size_t n; - - r = signature_element_length(p, &n); - if (r < 0) - return r; - else { - char t[n+1]; - - memcpy(t, p, n); - t[n] = 0; - - p += n; - - r = bus_gvariant_is_fixed_size(t); - if (r < 0) - return r; - if (r > 0 || p[0] == 0) - continue; - } - - k = n_variable - 1 - j; - - bus_gvariant_write_word_le(a + k * sz, sz, c->offsets[i] - c->begin); - - j++; - } - } - - return 0; -} - -_public_ int sd_bus_message_close_container(sd_bus_message *m) { - struct bus_container *c; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(m->n_containers > 0, -EINVAL); - assert_return(!m->poisoned, -ESTALE); - - c = message_get_container(m); - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - if (c->signature && c->signature[c->index] != 0) - return -EINVAL; - - m->n_containers--; - - if (c->enclosing == SD_BUS_TYPE_ARRAY) - r = bus_message_close_array(m, c); - else if (c->enclosing == SD_BUS_TYPE_VARIANT) - r = bus_message_close_variant(m, c); - else if (c->enclosing == SD_BUS_TYPE_STRUCT || c->enclosing == SD_BUS_TYPE_DICT_ENTRY) - r = bus_message_close_struct(m, c, true); - else - assert_not_reached("Unknown container type"); - - free(c->signature); - free(c->offsets); - - return r; -} - -typedef struct { - const char *types; - unsigned n_struct; - unsigned n_array; -} TypeStack; - -static int type_stack_push(TypeStack *stack, unsigned max, unsigned *i, const char *types, unsigned n_struct, unsigned n_array) { - assert(stack); - assert(max > 0); - - if (*i >= max) - return -EINVAL; - - stack[*i].types = types; - stack[*i].n_struct = n_struct; - stack[*i].n_array = n_array; - (*i)++; - - return 0; -} - -static int type_stack_pop(TypeStack *stack, unsigned max, unsigned *i, const char **types, unsigned *n_struct, unsigned *n_array) { - assert(stack); - assert(max > 0); - assert(types); - assert(n_struct); - assert(n_array); - - if (*i <= 0) - return 0; - - (*i)--; - *types = stack[*i].types; - *n_struct = stack[*i].n_struct; - *n_array = stack[*i].n_array; - - return 1; -} - -int bus_message_append_ap( - sd_bus_message *m, - const char *types, - va_list ap) { - - unsigned n_array, n_struct; - TypeStack stack[BUS_CONTAINER_DEPTH]; - unsigned stack_ptr = 0; - int r; - - assert(m); - - if (!types) - return 0; - - n_array = (unsigned) -1; - n_struct = strlen(types); - - for (;;) { - const char *t; - - if (n_array == 0 || (n_array == (unsigned) -1 && n_struct == 0)) { - r = type_stack_pop(stack, ELEMENTSOF(stack), &stack_ptr, &types, &n_struct, &n_array); - if (r < 0) - return r; - if (r == 0) - break; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - continue; - } - - t = types; - if (n_array != (unsigned) -1) - n_array --; - else { - types ++; - n_struct--; - } - - switch (*t) { - - case SD_BUS_TYPE_BYTE: { - uint8_t x; - - x = (uint8_t) va_arg(ap, int); - r = sd_bus_message_append_basic(m, *t, &x); - break; - } - - case SD_BUS_TYPE_BOOLEAN: - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - case SD_BUS_TYPE_UNIX_FD: { - uint32_t x; - - /* We assume a boolean is the same as int32_t */ - assert_cc(sizeof(int32_t) == sizeof(int)); - - x = va_arg(ap, uint32_t); - r = sd_bus_message_append_basic(m, *t, &x); - break; - } - - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: { - uint16_t x; - - x = (uint16_t) va_arg(ap, int); - r = sd_bus_message_append_basic(m, *t, &x); - break; - } - - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: { - uint64_t x; - - x = va_arg(ap, uint64_t); - r = sd_bus_message_append_basic(m, *t, &x); - break; - } - - case SD_BUS_TYPE_DOUBLE: { - double x; - - x = va_arg(ap, double); - r = sd_bus_message_append_basic(m, *t, &x); - break; - } - - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: { - const char *x; - - x = va_arg(ap, const char*); - r = sd_bus_message_append_basic(m, *t, x); - break; - } - - case SD_BUS_TYPE_ARRAY: { - size_t k; - - r = signature_element_length(t + 1, &k); - if (r < 0) - return r; - - { - char s[k + 1]; - memcpy(s, t + 1, k); - s[k] = 0; - - r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, s); - if (r < 0) - return r; - } - - if (n_array == (unsigned) -1) { - types += k; - n_struct -= k; - } - - r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array); - if (r < 0) - return r; - - types = t + 1; - n_struct = k; - n_array = va_arg(ap, unsigned); - - break; - } - - case SD_BUS_TYPE_VARIANT: { - const char *s; - - s = va_arg(ap, const char*); - if (!s) - return -EINVAL; - - r = sd_bus_message_open_container(m, SD_BUS_TYPE_VARIANT, s); - if (r < 0) - return r; - - r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array); - if (r < 0) - return r; - - types = s; - n_struct = strlen(s); - n_array = (unsigned) -1; - - break; - } - - case SD_BUS_TYPE_STRUCT_BEGIN: - case SD_BUS_TYPE_DICT_ENTRY_BEGIN: { - size_t k; - - r = signature_element_length(t, &k); - if (r < 0) - return r; - - { - char s[k - 1]; - - memcpy(s, t + 1, k - 2); - s[k - 2] = 0; - - r = sd_bus_message_open_container(m, *t == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s); - if (r < 0) - return r; - } - - if (n_array == (unsigned) -1) { - types += k - 1; - n_struct -= k - 1; - } - - r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array); - if (r < 0) - return r; - - types = t + 1; - n_struct = k - 2; - n_array = (unsigned) -1; - - break; - } - - default: - r = -EINVAL; - } - - if (r < 0) - return r; - } - - return 1; -} - -_public_ int sd_bus_message_append(sd_bus_message *m, const char *types, ...) { - va_list ap; - int r; - - assert_return(m, -EINVAL); - assert_return(types, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(!m->poisoned, -ESTALE); - - va_start(ap, types); - r = bus_message_append_ap(m, types, ap); - va_end(ap); - - return r; -} - -_public_ int sd_bus_message_append_array_space( - sd_bus_message *m, - char type, - size_t size, - void **ptr) { - - ssize_t align, sz; - void *a; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(bus_type_is_trivial(type) && type != SD_BUS_TYPE_BOOLEAN, -EINVAL); - assert_return(ptr || size == 0, -EINVAL); - assert_return(!m->poisoned, -ESTALE); - - /* alignment and size of the trivial types (except bool) is - * identical for gvariant and dbus1 marshalling */ - align = bus_type_get_alignment(type); - sz = bus_type_get_size(type); - - assert_se(align > 0); - assert_se(sz > 0); - - if (size % sz != 0) - return -EINVAL; - - r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type)); - if (r < 0) - return r; - - a = message_extend_body(m, align, size, false, false); - if (!a) - return -ENOMEM; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - *ptr = a; - return 0; -} - -_public_ int sd_bus_message_append_array( - sd_bus_message *m, - char type, - const void *ptr, - size_t size) { - int r; - void *p; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(bus_type_is_trivial(type), -EINVAL); - assert_return(ptr || size == 0, -EINVAL); - assert_return(!m->poisoned, -ESTALE); - - r = sd_bus_message_append_array_space(m, type, size, &p); - if (r < 0) - return r; - - if (size > 0) - memcpy(p, ptr, size); - - return 0; -} - -_public_ int sd_bus_message_append_array_iovec( - sd_bus_message *m, - char type, - const struct iovec *iov, - unsigned n) { - - size_t size; - unsigned i; - void *p; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(bus_type_is_trivial(type), -EINVAL); - assert_return(iov || n == 0, -EINVAL); - assert_return(!m->poisoned, -ESTALE); - - size = IOVEC_TOTAL_SIZE(iov, n); - - r = sd_bus_message_append_array_space(m, type, size, &p); - if (r < 0) - return r; - - for (i = 0; i < n; i++) { - - if (iov[i].iov_base) - memcpy(p, iov[i].iov_base, iov[i].iov_len); - else - memzero(p, iov[i].iov_len); - - p = (uint8_t*) p + iov[i].iov_len; - } - - return 0; -} - -_public_ int sd_bus_message_append_array_memfd( - sd_bus_message *m, - char type, - int memfd, - uint64_t offset, - uint64_t size) { - - _cleanup_close_ int copy_fd = -1; - struct bus_body_part *part; - ssize_t align, sz; - uint64_t real_size; - void *a; - int r; - - assert_return(m, -EINVAL); - assert_return(memfd >= 0, -EBADF); - assert_return(bus_type_is_trivial(type), -EINVAL); - assert_return(size > 0, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(!m->poisoned, -ESTALE); - - r = memfd_set_sealed(memfd); - if (r < 0) - return r; - - copy_fd = dup(memfd); - if (copy_fd < 0) - return copy_fd; - - r = memfd_get_size(memfd, &real_size); - if (r < 0) - return r; - - if (offset == 0 && size == (uint64_t) -1) - size = real_size; - else if (offset + size > real_size) - return -EMSGSIZE; - - align = bus_type_get_alignment(type); - sz = bus_type_get_size(type); - - assert_se(align > 0); - assert_se(sz > 0); - - if (offset % align != 0) - return -EINVAL; - - if (size % sz != 0) - return -EINVAL; - - if (size > (uint64_t) (uint32_t) -1) - return -EINVAL; - - r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type)); - if (r < 0) - return r; - - a = message_extend_body(m, align, 0, false, false); - if (!a) - return -ENOMEM; - - part = message_append_part(m); - if (!part) - return -ENOMEM; - - part->memfd = copy_fd; - part->memfd_offset = offset; - part->sealed = true; - part->size = size; - copy_fd = -1; - - m->body_size += size; - message_extend_containers(m, size); - - return sd_bus_message_close_container(m); -} - -_public_ int sd_bus_message_append_string_memfd( - sd_bus_message *m, - int memfd, - uint64_t offset, - uint64_t size) { - - _cleanup_close_ int copy_fd = -1; - struct bus_body_part *part; - struct bus_container *c; - uint64_t real_size; - void *a; - int r; - - assert_return(m, -EINVAL); - assert_return(memfd >= 0, -EBADF); - assert_return(size > 0, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(!m->poisoned, -ESTALE); - - r = memfd_set_sealed(memfd); - if (r < 0) - return r; - - copy_fd = dup(memfd); - if (copy_fd < 0) - return copy_fd; - - r = memfd_get_size(memfd, &real_size); - if (r < 0) - return r; - - if (offset == 0 && size == (uint64_t) -1) - size = real_size; - else if (offset + size > real_size) - return -EMSGSIZE; - - /* We require this to be NUL terminated */ - if (size == 0) - return -EINVAL; - - if (size > (uint64_t) (uint32_t) -1) - return -EINVAL; - - c = message_get_container(m); - if (c->signature && c->signature[c->index]) { - /* Container signature is already set */ - - if (c->signature[c->index] != SD_BUS_TYPE_STRING) - return -ENXIO; - } else { - char *e; - - /* Maybe we can append to the signature? But only if this is the top-level container */ - if (c->enclosing != 0) - return -ENXIO; - - e = strextend(&c->signature, CHAR_TO_STR(SD_BUS_TYPE_STRING), NULL); - if (!e) { - m->poisoned = true; - return -ENOMEM; - } - } - - if (!BUS_MESSAGE_IS_GVARIANT(m)) { - a = message_extend_body(m, 4, 4, false, false); - if (!a) - return -ENOMEM; - - *(uint32_t*) a = size - 1; - } - - part = message_append_part(m); - if (!part) - return -ENOMEM; - - part->memfd = copy_fd; - part->memfd_offset = offset; - part->sealed = true; - part->size = size; - copy_fd = -1; - - m->body_size += size; - message_extend_containers(m, size); - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - r = message_add_offset(m, m->body_size); - if (r < 0) { - m->poisoned = true; - return -ENOMEM; - } - } - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index++; - - return 0; -} - -_public_ int sd_bus_message_append_strv(sd_bus_message *m, char **l) { - char **i; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(!m->poisoned, -ESTALE); - - r = sd_bus_message_open_container(m, 'a', "s"); - if (r < 0) - return r; - - STRV_FOREACH(i, l) { - r = sd_bus_message_append_basic(m, 's', *i); - if (r < 0) - return r; - } - - return sd_bus_message_close_container(m); -} - -static int bus_message_close_header(sd_bus_message *m) { - - assert(m); - - /* The actual user data is finished now, we just complete the - variant and struct now (at least on gvariant). Remember - this position, so that during parsing we know where to to - put the outer container end. */ - m->user_body_size = m->body_size; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - const char *signature; - size_t sz, l; - void *d; - - /* Add offset table to end of fields array */ - if (m->n_header_offsets >= 1) { - uint8_t *a; - unsigned i; - - assert(m->fields_size == m->header_offsets[m->n_header_offsets-1]); - - sz = bus_gvariant_determine_word_size(m->fields_size, m->n_header_offsets); - a = message_extend_fields(m, 1, sz * m->n_header_offsets, false); - if (!a) - return -ENOMEM; - - for (i = 0; i < m->n_header_offsets; i++) - bus_gvariant_write_word_le(a + sz*i, sz, m->header_offsets[i]); - } - - /* Add gvariant NUL byte plus signature to the end of - * the body, followed by the final offset pointing to - * the end of the fields array */ - - signature = strempty(m->root_container.signature); - l = strlen(signature); - - sz = bus_gvariant_determine_word_size(sizeof(struct bus_header) + ALIGN8(m->fields_size) + m->body_size + 1 + l + 2, 1); - d = message_extend_body(m, 1, 1 + l + 2 + sz, false, true); - if (!d) - return -ENOMEM; - - *(uint8_t*) d = 0; - *((uint8_t*) d + 1) = SD_BUS_TYPE_STRUCT_BEGIN; - memcpy((uint8_t*) d + 2, signature, l); - *((uint8_t*) d + 1 + l + 1) = SD_BUS_TYPE_STRUCT_END; - - bus_gvariant_write_word_le((uint8_t*) d + 1 + l + 2, sz, sizeof(struct bus_header) + m->fields_size); - - m->footer = d; - m->footer_accessible = 1 + l + 2 + sz; - } else { - m->header->dbus1.fields_size = m->fields_size; - m->header->dbus1.body_size = m->body_size; - } - - return 0; -} - -int bus_message_seal(sd_bus_message *m, uint64_t cookie, usec_t timeout) { - struct bus_body_part *part; - size_t a; - unsigned i; - int r; - - assert(m); - - if (m->sealed) - return -EPERM; - - if (m->n_containers > 0) - return -EBADMSG; - - if (m->poisoned) - return -ESTALE; - - if (cookie > 0xffffffffULL && - !BUS_MESSAGE_IS_GVARIANT(m)) - return -EOPNOTSUPP; - - /* In vtables the return signature of method calls is listed, - * let's check if they match if this is a response */ - if (m->header->type == SD_BUS_MESSAGE_METHOD_RETURN && - m->enforced_reply_signature && - !streq(strempty(m->root_container.signature), m->enforced_reply_signature)) - return -ENOMSG; - - /* If gvariant marshalling is used we need to close the body structure */ - r = bus_message_close_struct(m, &m->root_container, false); - if (r < 0) - return r; - - /* If there's a non-trivial signature set, then add it in - * here, but only on dbus1 */ - if (!isempty(m->root_container.signature) && !BUS_MESSAGE_IS_GVARIANT(m)) { - r = message_append_field_signature(m, BUS_MESSAGE_HEADER_SIGNATURE, m->root_container.signature, NULL); - if (r < 0) - return r; - } - - if (m->n_fds > 0) { - r = message_append_field_uint32(m, BUS_MESSAGE_HEADER_UNIX_FDS, m->n_fds); - if (r < 0) - return r; - } - - r = bus_message_close_header(m); - if (r < 0) - return r; - - if (BUS_MESSAGE_IS_GVARIANT(m)) - m->header->dbus2.cookie = cookie; - else - m->header->dbus1.serial = (uint32_t) cookie; - - m->timeout = m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED ? 0 : timeout; - - /* Add padding at the end of the fields part, since we know - * the body needs to start at an 8 byte alignment. We made - * sure we allocated enough space for this, so all we need to - * do here is to zero it out. */ - a = ALIGN8(m->fields_size) - m->fields_size; - if (a > 0) - memzero((uint8_t*) BUS_MESSAGE_FIELDS(m) + m->fields_size, a); - - /* If this is something we can send as memfd, then let's seal - the memfd now. Note that we can send memfds as payload only - for directed messages, and not for broadcasts. */ - if (m->destination && m->bus->use_memfd) { - MESSAGE_FOREACH_PART(part, i, m) - if (part->memfd >= 0 && - !part->sealed && - (part->size > MEMFD_MIN_SIZE || m->bus->use_memfd < 0) && - part != m->body_end) { /* The last part may never be sent as memfd */ - uint64_t sz; - - /* Try to seal it if that makes - * sense. First, unmap our own map to - * make sure we don't keep it busy. */ - bus_body_part_unmap(part); - - /* Then, sync up real memfd size */ - sz = part->size; - r = memfd_set_size(part->memfd, sz); - if (r < 0) - return r; - - /* Finally, try to seal */ - if (memfd_set_sealed(part->memfd) >= 0) - part->sealed = true; - } - } - - m->root_container.end = m->user_body_size; - m->root_container.index = 0; - m->root_container.offset_index = 0; - m->root_container.item_size = m->root_container.n_offsets > 0 ? m->root_container.offsets[0] : 0; - - m->sealed = true; - - return 0; -} - -int bus_body_part_map(struct bus_body_part *part) { - void *p; - size_t psz, shift; - - assert_se(part); - - if (part->data) - return 0; - - if (part->size <= 0) - return 0; - - /* For smaller zero parts (as used for padding) we don't need to map anything... */ - if (part->memfd < 0 && part->is_zero && part->size < 8) { - static const uint8_t zeroes[7] = { }; - part->data = (void*) zeroes; - return 0; - } - - shift = part->memfd_offset - ((part->memfd_offset / page_size()) * page_size()); - psz = PAGE_ALIGN(part->size + shift); - - if (part->memfd >= 0) - p = mmap(NULL, psz, PROT_READ, MAP_PRIVATE, part->memfd, part->memfd_offset - shift); - else if (part->is_zero) - p = mmap(NULL, psz, PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); - else - return -EINVAL; - - if (p == MAP_FAILED) - return -errno; - - part->mapped = psz; - part->mmap_begin = p; - part->data = (uint8_t*) p + shift; - part->munmap_this = true; - - return 0; -} - -void bus_body_part_unmap(struct bus_body_part *part) { - - assert_se(part); - - if (part->memfd < 0) - return; - - if (!part->mmap_begin) - return; - - if (!part->munmap_this) - return; - - assert_se(munmap(part->mmap_begin, part->mapped) == 0); - - part->mmap_begin = NULL; - part->data = NULL; - part->mapped = 0; - part->munmap_this = false; - - return; -} - -static int buffer_peek(const void *p, uint32_t sz, size_t *rindex, size_t align, size_t nbytes, void **r) { - size_t k, start, end; - - assert(rindex); - assert(align > 0); - - start = ALIGN_TO((size_t) *rindex, align); - end = start + nbytes; - - if (end > sz) - return -EBADMSG; - - /* Verify that padding is 0 */ - for (k = *rindex; k < start; k++) - if (((const uint8_t*) p)[k] != 0) - return -EBADMSG; - - if (r) - *r = (uint8_t*) p + start; - - *rindex = end; - - return 1; -} - -static bool message_end_of_signature(sd_bus_message *m) { - struct bus_container *c; - - assert(m); - - c = message_get_container(m); - return !c->signature || c->signature[c->index] == 0; -} - -static bool message_end_of_array(sd_bus_message *m, size_t index) { - struct bus_container *c; - - assert(m); - - c = message_get_container(m); - if (c->enclosing != SD_BUS_TYPE_ARRAY) - return false; - - if (BUS_MESSAGE_IS_GVARIANT(m)) - return index >= c->end; - else { - assert(c->array_size); - return index >= c->begin + BUS_MESSAGE_BSWAP32(m, *c->array_size); - } -} - -_public_ int sd_bus_message_at_end(sd_bus_message *m, int complete) { - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - - if (complete && m->n_containers > 0) - return false; - - if (message_end_of_signature(m)) - return true; - - if (message_end_of_array(m, m->rindex)) - return true; - - return false; -} - -static struct bus_body_part* find_part(sd_bus_message *m, size_t index, size_t sz, void **p) { - struct bus_body_part *part; - size_t begin; - int r; - - assert(m); - - if (m->cached_rindex_part && index >= m->cached_rindex_part_begin) { - part = m->cached_rindex_part; - begin = m->cached_rindex_part_begin; - } else { - part = &m->body; - begin = 0; - } - - while (part) { - if (index < begin) - return NULL; - - if (index + sz <= begin + part->size) { - - r = bus_body_part_map(part); - if (r < 0) - return NULL; - - if (p) - *p = (uint8_t*) part->data + index - begin; - - m->cached_rindex_part = part; - m->cached_rindex_part_begin = begin; - - return part; - } - - begin += part->size; - part = part->next; - } - - return NULL; -} - -static int container_next_item(sd_bus_message *m, struct bus_container *c, size_t *rindex) { - int r; - - assert(m); - assert(c); - assert(rindex); - - if (!BUS_MESSAGE_IS_GVARIANT(m)) - return 0; - - if (c->enclosing == SD_BUS_TYPE_ARRAY) { - int sz; - - sz = bus_gvariant_get_size(c->signature); - if (sz < 0) { - int alignment; - - if (c->offset_index+1 >= c->n_offsets) - goto end; - - /* Variable-size array */ - - alignment = bus_gvariant_get_alignment(c->signature); - assert(alignment > 0); - - *rindex = ALIGN_TO(c->offsets[c->offset_index], alignment); - c->item_size = c->offsets[c->offset_index+1] - *rindex; - } else { - - if (c->offset_index+1 >= (c->end-c->begin)/sz) - goto end; - - /* Fixed-size array */ - *rindex = c->begin + (c->offset_index+1) * sz; - c->item_size = sz; - } - - c->offset_index++; - - } else if (c->enclosing == 0 || - c->enclosing == SD_BUS_TYPE_STRUCT || - c->enclosing == SD_BUS_TYPE_DICT_ENTRY) { - - int alignment; - size_t n, j; - - if (c->offset_index+1 >= c->n_offsets) - goto end; - - r = signature_element_length(c->signature + c->index, &n); - if (r < 0) - return r; - - r = signature_element_length(c->signature + c->index + n, &j); - if (r < 0) - return r; - else { - char t[j+1]; - memcpy(t, c->signature + c->index + n, j); - t[j] = 0; - - alignment = bus_gvariant_get_alignment(t); - } - - assert(alignment > 0); - - *rindex = ALIGN_TO(c->offsets[c->offset_index], alignment); - c->item_size = c->offsets[c->offset_index+1] - *rindex; - - c->offset_index++; - - } else if (c->enclosing == SD_BUS_TYPE_VARIANT) - goto end; - else - assert_not_reached("Unknown container type"); - - return 0; - -end: - /* Reached the end */ - *rindex = c->end; - c->item_size = 0; - return 0; -} - - -static int message_peek_body( - sd_bus_message *m, - size_t *rindex, - size_t align, - size_t nbytes, - void **ret) { - - size_t k, start, end, padding; - struct bus_body_part *part; - uint8_t *q; - - assert(m); - assert(rindex); - assert(align > 0); - - start = ALIGN_TO((size_t) *rindex, align); - padding = start - *rindex; - end = start + nbytes; - - if (end > m->user_body_size) - return -EBADMSG; - - part = find_part(m, *rindex, padding, (void**) &q); - if (!part) - return -EBADMSG; - - if (q) { - /* Verify padding */ - for (k = 0; k < padding; k++) - if (q[k] != 0) - return -EBADMSG; - } - - part = find_part(m, start, nbytes, (void**) &q); - if (!part || (nbytes > 0 && !q)) - return -EBADMSG; - - *rindex = end; - - if (ret) - *ret = q; - - return 0; -} - -static bool validate_nul(const char *s, size_t l) { - - /* Check for NUL chars in the string */ - if (memchr(s, 0, l)) - return false; - - /* Check for NUL termination */ - if (s[l] != 0) - return false; - - return true; -} - -static bool validate_string(const char *s, size_t l) { - - if (!validate_nul(s, l)) - return false; - - /* Check if valid UTF8 */ - if (!utf8_is_valid(s)) - return false; - - return true; -} - -static bool validate_signature(const char *s, size_t l) { - - if (!validate_nul(s, l)) - return false; - - /* Check if valid signature */ - if (!signature_is_valid(s, true)) - return false; - - return true; -} - -static bool validate_object_path(const char *s, size_t l) { - - if (!validate_nul(s, l)) - return false; - - if (!object_path_is_valid(s)) - return false; - - return true; -} - -_public_ int sd_bus_message_read_basic(sd_bus_message *m, char type, void *p) { - struct bus_container *c; - size_t rindex; - void *q; - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - assert_return(bus_type_is_basic(type), -EINVAL); - - if (message_end_of_signature(m)) - return -ENXIO; - - if (message_end_of_array(m, m->rindex)) - return 0; - - c = message_get_container(m); - if (c->signature[c->index] != type) - return -ENXIO; - - rindex = m->rindex; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - - if (IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, SD_BUS_TYPE_SIGNATURE)) { - bool ok; - - r = message_peek_body(m, &rindex, 1, c->item_size, &q); - if (r < 0) - return r; - - if (type == SD_BUS_TYPE_STRING) - ok = validate_string(q, c->item_size-1); - else if (type == SD_BUS_TYPE_OBJECT_PATH) - ok = validate_object_path(q, c->item_size-1); - else - ok = validate_signature(q, c->item_size-1); - - if (!ok) - return -EBADMSG; - - if (p) - *(const char**) p = q; - } else { - int sz, align; - - sz = bus_gvariant_get_size(CHAR_TO_STR(type)); - assert(sz > 0); - if ((size_t) sz != c->item_size) - return -EBADMSG; - - align = bus_gvariant_get_alignment(CHAR_TO_STR(type)); - assert(align > 0); - - r = message_peek_body(m, &rindex, align, c->item_size, &q); - if (r < 0) - return r; - - switch (type) { - - case SD_BUS_TYPE_BYTE: - if (p) - *(uint8_t*) p = *(uint8_t*) q; - break; - - case SD_BUS_TYPE_BOOLEAN: - if (p) - *(int*) p = !!*(uint8_t*) q; - break; - - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - if (p) - *(uint16_t*) p = BUS_MESSAGE_BSWAP16(m, *(uint16_t*) q); - break; - - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - if (p) - *(uint32_t*) p = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q); - break; - - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - if (p) - *(uint64_t*) p = BUS_MESSAGE_BSWAP64(m, *(uint64_t*) q); - break; - - case SD_BUS_TYPE_UNIX_FD: { - uint32_t j; - - j = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q); - if (j >= m->n_fds) - return -EBADMSG; - - if (p) - *(int*) p = m->fds[j]; - - break; - } - - default: - assert_not_reached("unexpected type"); - } - } - - r = container_next_item(m, c, &rindex); - if (r < 0) - return r; - } else { - - if (IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH)) { - uint32_t l; - bool ok; - - r = message_peek_body(m, &rindex, 4, 4, &q); - if (r < 0) - return r; - - l = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q); - r = message_peek_body(m, &rindex, 1, l+1, &q); - if (r < 0) - return r; - - if (type == SD_BUS_TYPE_OBJECT_PATH) - ok = validate_object_path(q, l); - else - ok = validate_string(q, l); - if (!ok) - return -EBADMSG; - - if (p) - *(const char**) p = q; - - } else if (type == SD_BUS_TYPE_SIGNATURE) { - uint8_t l; - - r = message_peek_body(m, &rindex, 1, 1, &q); - if (r < 0) - return r; - - l = *(uint8_t*) q; - r = message_peek_body(m, &rindex, 1, l+1, &q); - if (r < 0) - return r; - - if (!validate_signature(q, l)) - return -EBADMSG; - - if (p) - *(const char**) p = q; - - } else { - ssize_t sz, align; - - align = bus_type_get_alignment(type); - assert(align > 0); - - sz = bus_type_get_size(type); - assert(sz > 0); - - r = message_peek_body(m, &rindex, align, sz, &q); - if (r < 0) - return r; - - switch (type) { - - case SD_BUS_TYPE_BYTE: - if (p) - *(uint8_t*) p = *(uint8_t*) q; - break; - - case SD_BUS_TYPE_BOOLEAN: - if (p) - *(int*) p = !!*(uint32_t*) q; - break; - - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - if (p) - *(uint16_t*) p = BUS_MESSAGE_BSWAP16(m, *(uint16_t*) q); - break; - - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - if (p) - *(uint32_t*) p = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q); - break; - - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - if (p) - *(uint64_t*) p = BUS_MESSAGE_BSWAP64(m, *(uint64_t*) q); - break; - - case SD_BUS_TYPE_UNIX_FD: { - uint32_t j; - - j = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q); - if (j >= m->n_fds) - return -EBADMSG; - - if (p) - *(int*) p = m->fds[j]; - break; - } - - default: - assert_not_reached("Unknown basic type..."); - } - } - } - - m->rindex = rindex; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index++; - - return 1; -} - -static int bus_message_enter_array( - sd_bus_message *m, - struct bus_container *c, - const char *contents, - uint32_t **array_size, - size_t *item_size, - size_t **offsets, - size_t *n_offsets) { - - size_t rindex; - void *q; - int r, alignment; - - assert(m); - assert(c); - assert(contents); - assert(array_size); - assert(item_size); - assert(offsets); - assert(n_offsets); - - if (!signature_is_single(contents, true)) - return -EINVAL; - - if (!c->signature || c->signature[c->index] == 0) - return -ENXIO; - - if (c->signature[c->index] != SD_BUS_TYPE_ARRAY) - return -ENXIO; - - if (!startswith(c->signature + c->index + 1, contents)) - return -ENXIO; - - rindex = m->rindex; - - if (!BUS_MESSAGE_IS_GVARIANT(m)) { - /* dbus1 */ - - r = message_peek_body(m, &rindex, 4, 4, &q); - if (r < 0) - return r; - - if (BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q) > BUS_ARRAY_MAX_SIZE) - return -EBADMSG; - - alignment = bus_type_get_alignment(contents[0]); - if (alignment < 0) - return alignment; - - r = message_peek_body(m, &rindex, alignment, 0, NULL); - if (r < 0) - return r; - - *array_size = (uint32_t*) q; - - } else if (c->item_size <= 0) { - - /* gvariant: empty array */ - *item_size = 0; - *offsets = NULL; - *n_offsets = 0; - - } else if (bus_gvariant_is_fixed_size(contents)) { - - /* gvariant: fixed length array */ - *item_size = bus_gvariant_get_size(contents); - *offsets = NULL; - *n_offsets = 0; - - } else { - size_t where, p = 0, framing, sz; - unsigned i; - - /* gvariant: variable length array */ - sz = bus_gvariant_determine_word_size(c->item_size, 0); - - where = rindex + c->item_size - sz; - r = message_peek_body(m, &where, 1, sz, &q); - if (r < 0) - return r; - - framing = bus_gvariant_read_word_le(q, sz); - if (framing > c->item_size - sz) - return -EBADMSG; - if ((c->item_size - framing) % sz != 0) - return -EBADMSG; - - *n_offsets = (c->item_size - framing) / sz; - - where = rindex + framing; - r = message_peek_body(m, &where, 1, *n_offsets * sz, &q); - if (r < 0) - return r; - - *offsets = new(size_t, *n_offsets); - if (!*offsets) - return -ENOMEM; - - for (i = 0; i < *n_offsets; i++) { - size_t x; - - x = bus_gvariant_read_word_le((uint8_t*) q + i * sz, sz); - if (x > c->item_size - sz) - return -EBADMSG; - if (x < p) - return -EBADMSG; - - (*offsets)[i] = rindex + x; - p = x; - } - - *item_size = (*offsets)[0] - rindex; - } - - m->rindex = rindex; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index += 1 + strlen(contents); - - return 1; -} - -static int bus_message_enter_variant( - sd_bus_message *m, - struct bus_container *c, - const char *contents, - size_t *item_size) { - - size_t rindex; - uint8_t l; - void *q; - int r; - - assert(m); - assert(c); - assert(contents); - assert(item_size); - - if (!signature_is_single(contents, false)) - return -EINVAL; - - if (*contents == SD_BUS_TYPE_DICT_ENTRY_BEGIN) - return -EINVAL; - - if (!c->signature || c->signature[c->index] == 0) - return -ENXIO; - - if (c->signature[c->index] != SD_BUS_TYPE_VARIANT) - return -ENXIO; - - rindex = m->rindex; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - size_t k, where; - - k = strlen(contents); - if (1+k > c->item_size) - return -EBADMSG; - - where = rindex + c->item_size - (1+k); - r = message_peek_body(m, &where, 1, 1+k, &q); - if (r < 0) - return r; - - if (*(char*) q != 0) - return -EBADMSG; - - if (memcmp((uint8_t*) q+1, contents, k)) - return -ENXIO; - - *item_size = c->item_size - (1+k); - - } else { - r = message_peek_body(m, &rindex, 1, 1, &q); - if (r < 0) - return r; - - l = *(uint8_t*) q; - r = message_peek_body(m, &rindex, 1, l+1, &q); - if (r < 0) - return r; - - if (!validate_signature(q, l)) - return -EBADMSG; - - if (!streq(q, contents)) - return -ENXIO; - } - - m->rindex = rindex; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index++; - - return 1; -} - -static int build_struct_offsets( - sd_bus_message *m, - const char *signature, - size_t size, - size_t *item_size, - size_t **offsets, - size_t *n_offsets) { - - unsigned n_variable = 0, n_total = 0, v; - size_t previous = 0, where; - const char *p; - size_t sz; - void *q; - int r; - - assert(m); - assert(item_size); - assert(offsets); - assert(n_offsets); - - if (isempty(signature)) { - /* Unary type is encoded as *fixed* 1 byte padding */ - r = message_peek_body(m, &m->rindex, 1, 1, &q); - if (r < 0) - return r; - - if (*(uint8_t *) q != 0) - return -EBADMSG; - - *item_size = 0; - *offsets = NULL; - *n_offsets = 0; - return 0; - } - - sz = bus_gvariant_determine_word_size(size, 0); - if (sz <= 0) - return -EBADMSG; - - /* First, loop over signature and count variable elements and - * elements in general. We use this to know how large the - * offset array is at the end of the structure. Note that - * GVariant only stores offsets for all variable size elements - * that are not the last item. */ - - p = signature; - while (*p != 0) { - size_t n; - - r = signature_element_length(p, &n); - if (r < 0) - return r; - else { - char t[n+1]; - - memcpy(t, p, n); - t[n] = 0; - - r = bus_gvariant_is_fixed_size(t); - } - - if (r < 0) - return r; - if (r == 0 && p[n] != 0) /* except the last item */ - n_variable ++; - n_total++; - - p += n; - } - - if (size < n_variable * sz) - return -EBADMSG; - - where = m->rindex + size - (n_variable * sz); - r = message_peek_body(m, &where, 1, n_variable * sz, &q); - if (r < 0) - return r; - - v = n_variable; - - *offsets = new(size_t, n_total); - if (!*offsets) - return -ENOMEM; - - *n_offsets = 0; - - /* Second, loop again and build an offset table */ - p = signature; - while (*p != 0) { - size_t n, offset; - int k; - - r = signature_element_length(p, &n); - if (r < 0) - return r; - else { - char t[n+1]; - - memcpy(t, p, n); - t[n] = 0; - - k = bus_gvariant_get_size(t); - if (k < 0) { - size_t x; - - /* variable size */ - if (v > 0) { - v--; - - x = bus_gvariant_read_word_le((uint8_t*) q + v*sz, sz); - if (x >= size) - return -EBADMSG; - if (m->rindex + x < previous) - return -EBADMSG; - } else - /* The last item's end - * is determined from - * the start of the - * offset array */ - x = size - (n_variable * sz); - - offset = m->rindex + x; - - } else { - size_t align; - - /* fixed size */ - align = bus_gvariant_get_alignment(t); - assert(align > 0); - - offset = (*n_offsets == 0 ? m->rindex : ALIGN_TO((*offsets)[*n_offsets-1], align)) + k; - } - } - - previous = (*offsets)[(*n_offsets)++] = offset; - p += n; - } - - assert(v == 0); - assert(*n_offsets == n_total); - - *item_size = (*offsets)[0] - m->rindex; - return 0; -} - -static int enter_struct_or_dict_entry( - sd_bus_message *m, - struct bus_container *c, - const char *contents, - size_t *item_size, - size_t **offsets, - size_t *n_offsets) { - - int r; - - assert(m); - assert(c); - assert(contents); - assert(item_size); - assert(offsets); - assert(n_offsets); - - if (!BUS_MESSAGE_IS_GVARIANT(m)) { - - /* dbus1 */ - r = message_peek_body(m, &m->rindex, 8, 0, NULL); - if (r < 0) - return r; - - } else - /* gvariant with contents */ - return build_struct_offsets(m, contents, c->item_size, item_size, offsets, n_offsets); - - return 0; -} - -static int bus_message_enter_struct( - sd_bus_message *m, - struct bus_container *c, - const char *contents, - size_t *item_size, - size_t **offsets, - size_t *n_offsets) { - - size_t l; - int r; - - assert(m); - assert(c); - assert(contents); - assert(item_size); - assert(offsets); - assert(n_offsets); - - if (!signature_is_valid(contents, false)) - return -EINVAL; - - if (!c->signature || c->signature[c->index] == 0) - return -ENXIO; - - l = strlen(contents); - - if (c->signature[c->index] != SD_BUS_TYPE_STRUCT_BEGIN || - !startswith(c->signature + c->index + 1, contents) || - c->signature[c->index + 1 + l] != SD_BUS_TYPE_STRUCT_END) - return -ENXIO; - - r = enter_struct_or_dict_entry(m, c, contents, item_size, offsets, n_offsets); - if (r < 0) - return r; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index += 1 + l + 1; - - return 1; -} - -static int bus_message_enter_dict_entry( - sd_bus_message *m, - struct bus_container *c, - const char *contents, - size_t *item_size, - size_t **offsets, - size_t *n_offsets) { - - size_t l; - int r; - - assert(m); - assert(c); - assert(contents); - - if (!signature_is_pair(contents)) - return -EINVAL; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - return -ENXIO; - - if (!c->signature || c->signature[c->index] == 0) - return 0; - - l = strlen(contents); - - if (c->signature[c->index] != SD_BUS_TYPE_DICT_ENTRY_BEGIN || - !startswith(c->signature + c->index + 1, contents) || - c->signature[c->index + 1 + l] != SD_BUS_TYPE_DICT_ENTRY_END) - return -ENXIO; - - r = enter_struct_or_dict_entry(m, c, contents, item_size, offsets, n_offsets); - if (r < 0) - return r; - - if (c->enclosing != SD_BUS_TYPE_ARRAY) - c->index += 1 + l + 1; - - return 1; -} - -_public_ int sd_bus_message_enter_container(sd_bus_message *m, - char type, - const char *contents) { - struct bus_container *c, *w; - uint32_t *array_size = NULL; - char *signature; - size_t before; - size_t *offsets = NULL; - size_t n_offsets = 0, item_size = 0; - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - assert_return(type != 0 || !contents, -EINVAL); - - if (type == 0 || !contents) { - const char *cc; - char tt; - - /* Allow entering into anonymous containers */ - r = sd_bus_message_peek_type(m, &tt, &cc); - if (r < 0) - return r; - - if (type != 0 && type != tt) - return -ENXIO; - - if (contents && !streq(contents, cc)) - return -ENXIO; - - type = tt; - contents = cc; - } - - /* - * We enforce a global limit on container depth, that is much - * higher than the 32 structs and 32 arrays the specification - * mandates. This is simpler to implement for us, and we need - * this only to ensure our container array doesn't grow - * without bounds. We are happy to return any data from a - * message as long as the data itself is valid, even if the - * overall message might be not. - * - * Note that the message signature is validated when - * parsing the headers, and that validation does check the - * 32/32 limit. - * - * Note that the specification defines no limits on the depth - * of stacked variants, but we do. - */ - if (m->n_containers >= BUS_CONTAINER_DEPTH) - return -EBADMSG; - - if (!GREEDY_REALLOC(m->containers, m->containers_allocated, m->n_containers + 1)) - return -ENOMEM; - - if (message_end_of_signature(m)) - return -ENXIO; - - if (message_end_of_array(m, m->rindex)) - return 0; - - c = message_get_container(m); - - signature = strdup(contents); - if (!signature) - return -ENOMEM; - - c->saved_index = c->index; - before = m->rindex; - - if (type == SD_BUS_TYPE_ARRAY) - r = bus_message_enter_array(m, c, contents, &array_size, &item_size, &offsets, &n_offsets); - else if (type == SD_BUS_TYPE_VARIANT) - r = bus_message_enter_variant(m, c, contents, &item_size); - else if (type == SD_BUS_TYPE_STRUCT) - r = bus_message_enter_struct(m, c, contents, &item_size, &offsets, &n_offsets); - else if (type == SD_BUS_TYPE_DICT_ENTRY) - r = bus_message_enter_dict_entry(m, c, contents, &item_size, &offsets, &n_offsets); - else - r = -EINVAL; - - if (r <= 0) { - free(signature); - free(offsets); - return r; - } - - /* OK, let's fill it in */ - w = m->containers + m->n_containers++; - w->enclosing = type; - w->signature = signature; - w->peeked_signature = NULL; - w->index = 0; - - w->before = before; - w->begin = m->rindex; - - /* Unary type has fixed size of 1, but virtual size of 0 */ - if (BUS_MESSAGE_IS_GVARIANT(m) && - type == SD_BUS_TYPE_STRUCT && - isempty(signature)) - w->end = m->rindex + 0; - else - w->end = m->rindex + c->item_size; - - w->array_size = array_size; - w->item_size = item_size; - w->offsets = offsets; - w->n_offsets = n_offsets; - w->offset_index = 0; - - return 1; -} - -_public_ int sd_bus_message_exit_container(sd_bus_message *m) { - struct bus_container *c; - unsigned saved; - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - assert_return(m->n_containers > 0, -ENXIO); - - c = message_get_container(m); - - if (c->enclosing != SD_BUS_TYPE_ARRAY) { - if (c->signature && c->signature[c->index] != 0) - return -EBUSY; - } - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - if (m->rindex < c->end) - return -EBUSY; - - } else if (c->enclosing == SD_BUS_TYPE_ARRAY) { - uint32_t l; - - l = BUS_MESSAGE_BSWAP32(m, *c->array_size); - if (c->begin + l != m->rindex) - return -EBUSY; - } - - free(c->signature); - free(c->peeked_signature); - free(c->offsets); - m->n_containers--; - - c = message_get_container(m); - - saved = c->index; - c->index = c->saved_index; - r = container_next_item(m, c, &m->rindex); - c->index = saved; - if (r < 0) - return r; - - return 1; -} - -static void message_quit_container(sd_bus_message *m) { - struct bus_container *c; - - assert(m); - assert(m->sealed); - assert(m->n_containers > 0); - - c = message_get_container(m); - - /* Undo seeks */ - assert(m->rindex >= c->before); - m->rindex = c->before; - - /* Free container */ - free(c->signature); - free(c->offsets); - m->n_containers--; - - /* Correct index of new top-level container */ - c = message_get_container(m); - c->index = c->saved_index; -} - -_public_ int sd_bus_message_peek_type(sd_bus_message *m, char *type, const char **contents) { - struct bus_container *c; - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - - if (message_end_of_signature(m)) - goto eof; - - if (message_end_of_array(m, m->rindex)) - goto eof; - - c = message_get_container(m); - - if (bus_type_is_basic(c->signature[c->index])) { - if (contents) - *contents = NULL; - if (type) - *type = c->signature[c->index]; - return 1; - } - - if (c->signature[c->index] == SD_BUS_TYPE_ARRAY) { - - if (contents) { - size_t l; - char *sig; - - r = signature_element_length(c->signature+c->index+1, &l); - if (r < 0) - return r; - - assert(l >= 1); - - sig = strndup(c->signature + c->index + 1, l); - if (!sig) - return -ENOMEM; - - free(c->peeked_signature); - *contents = c->peeked_signature = sig; - } - - if (type) - *type = SD_BUS_TYPE_ARRAY; - - return 1; - } - - if (c->signature[c->index] == SD_BUS_TYPE_STRUCT_BEGIN || - c->signature[c->index] == SD_BUS_TYPE_DICT_ENTRY_BEGIN) { - - if (contents) { - size_t l; - char *sig; - - r = signature_element_length(c->signature+c->index, &l); - if (r < 0) - return r; - - assert(l >= 2); - sig = strndup(c->signature + c->index + 1, l - 2); - if (!sig) - return -ENOMEM; - - free(c->peeked_signature); - *contents = c->peeked_signature = sig; - } - - if (type) - *type = c->signature[c->index] == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY; - - return 1; - } - - if (c->signature[c->index] == SD_BUS_TYPE_VARIANT) { - if (contents) { - void *q; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - size_t k; - - if (c->item_size < 2) - return -EBADMSG; - - /* Look for the NUL delimiter that - separates the payload from the - signature. Since the body might be - in a different part that then the - signature we map byte by byte. */ - - for (k = 2; k <= c->item_size; k++) { - size_t where; - - where = m->rindex + c->item_size - k; - r = message_peek_body(m, &where, 1, k, &q); - if (r < 0) - return r; - - if (*(char*) q == 0) - break; - } - - if (k > c->item_size) - return -EBADMSG; - - free(c->peeked_signature); - c->peeked_signature = strndup((char*) q + 1, k - 1); - if (!c->peeked_signature) - return -ENOMEM; - - if (!signature_is_valid(c->peeked_signature, true)) - return -EBADMSG; - - *contents = c->peeked_signature; - } else { - size_t rindex, l; - - rindex = m->rindex; - r = message_peek_body(m, &rindex, 1, 1, &q); - if (r < 0) - return r; - - l = *(uint8_t*) q; - r = message_peek_body(m, &rindex, 1, l+1, &q); - if (r < 0) - return r; - - if (!validate_signature(q, l)) - return -EBADMSG; - - *contents = q; - } - } - - if (type) - *type = SD_BUS_TYPE_VARIANT; - - return 1; - } - - return -EINVAL; - -eof: - if (type) - *type = 0; - if (contents) - *contents = NULL; - return 0; -} - -_public_ int sd_bus_message_rewind(sd_bus_message *m, int complete) { - struct bus_container *c; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - - if (complete) { - message_reset_containers(m); - m->rindex = 0; - - c = message_get_container(m); - } else { - c = message_get_container(m); - - c->offset_index = 0; - c->index = 0; - m->rindex = c->begin; - } - - c->offset_index = 0; - c->item_size = (c->n_offsets > 0 ? c->offsets[0] : c->end) - c->begin; - - return !isempty(c->signature); -} - -static int message_read_ap( - sd_bus_message *m, - const char *types, - va_list ap) { - - unsigned n_array, n_struct; - TypeStack stack[BUS_CONTAINER_DEPTH]; - unsigned stack_ptr = 0; - unsigned n_loop = 0; - int r; - - assert(m); - - if (isempty(types)) - return 0; - - /* Ideally, we'd just call ourselves recursively on every - * complex type. However, the state of a va_list that is - * passed to a function is undefined after that function - * returns. This means we need to docode the va_list linearly - * in a single stackframe. We hence implement our own - * home-grown stack in an array. */ - - n_array = (unsigned) -1; /* length of current array entries */ - n_struct = strlen(types); /* length of current struct contents signature */ - - for (;;) { - const char *t; - - n_loop++; - - if (n_array == 0 || (n_array == (unsigned) -1 && n_struct == 0)) { - r = type_stack_pop(stack, ELEMENTSOF(stack), &stack_ptr, &types, &n_struct, &n_array); - if (r < 0) - return r; - if (r == 0) - break; - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - - continue; - } - - t = types; - if (n_array != (unsigned) -1) - n_array --; - else { - types ++; - n_struct--; - } - - switch (*t) { - - case SD_BUS_TYPE_BYTE: - case SD_BUS_TYPE_BOOLEAN: - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: - case SD_BUS_TYPE_UNIX_FD: { - void *p; - - p = va_arg(ap, void*); - r = sd_bus_message_read_basic(m, *t, p); - if (r < 0) - return r; - if (r == 0) { - if (n_loop <= 1) - return 0; - - return -ENXIO; - } - - break; - } - - case SD_BUS_TYPE_ARRAY: { - size_t k; - - r = signature_element_length(t + 1, &k); - if (r < 0) - return r; - - { - char s[k + 1]; - memcpy(s, t + 1, k); - s[k] = 0; - - r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, s); - if (r < 0) - return r; - if (r == 0) { - if (n_loop <= 1) - return 0; - - return -ENXIO; - } - } - - if (n_array == (unsigned) -1) { - types += k; - n_struct -= k; - } - - r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array); - if (r < 0) - return r; - - types = t + 1; - n_struct = k; - n_array = va_arg(ap, unsigned); - - break; - } - - case SD_BUS_TYPE_VARIANT: { - const char *s; - - s = va_arg(ap, const char *); - if (!s) - return -EINVAL; - - r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, s); - if (r < 0) - return r; - if (r == 0) { - if (n_loop <= 1) - return 0; - - return -ENXIO; - } - - r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array); - if (r < 0) - return r; - - types = s; - n_struct = strlen(s); - n_array = (unsigned) -1; - - break; - } - - case SD_BUS_TYPE_STRUCT_BEGIN: - case SD_BUS_TYPE_DICT_ENTRY_BEGIN: { - size_t k; - - r = signature_element_length(t, &k); - if (r < 0) - return r; - - { - char s[k - 1]; - memcpy(s, t + 1, k - 2); - s[k - 2] = 0; - - r = sd_bus_message_enter_container(m, *t == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s); - if (r < 0) - return r; - if (r == 0) { - if (n_loop <= 1) - return 0; - return -ENXIO; - } - } - - if (n_array == (unsigned) -1) { - types += k - 1; - n_struct -= k - 1; - } - - r = type_stack_push(stack, ELEMENTSOF(stack), &stack_ptr, types, n_struct, n_array); - if (r < 0) - return r; - - types = t + 1; - n_struct = k - 2; - n_array = (unsigned) -1; - - break; - } - - default: - return -EINVAL; - } - } - - return 1; -} - -_public_ int sd_bus_message_read(sd_bus_message *m, const char *types, ...) { - va_list ap; - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - assert_return(types, -EINVAL); - - va_start(ap, types); - r = message_read_ap(m, types, ap); - va_end(ap); - - return r; -} - -_public_ int sd_bus_message_skip(sd_bus_message *m, const char *types) { - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - - /* If types is NULL, read exactly one element */ - if (!types) { - struct bus_container *c; - size_t l; - - if (message_end_of_signature(m)) - return -ENXIO; - - if (message_end_of_array(m, m->rindex)) - return 0; - - c = message_get_container(m); - - r = signature_element_length(c->signature + c->index, &l); - if (r < 0) - return r; - - types = strndupa(c->signature + c->index, l); - } - - switch (*types) { - - case 0: /* Nothing to drop */ - return 0; - - case SD_BUS_TYPE_BYTE: - case SD_BUS_TYPE_BOOLEAN: - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: - case SD_BUS_TYPE_UNIX_FD: - - r = sd_bus_message_read_basic(m, *types, NULL); - if (r <= 0) - return r; - - r = sd_bus_message_skip(m, types + 1); - if (r < 0) - return r; - - return 1; - - case SD_BUS_TYPE_ARRAY: { - size_t k; - - r = signature_element_length(types + 1, &k); - if (r < 0) - return r; - - { - char s[k+1]; - memcpy(s, types+1, k); - s[k] = 0; - - r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, s); - if (r <= 0) - return r; - - for (;;) { - r = sd_bus_message_skip(m, s); - if (r < 0) - return r; - if (r == 0) - break; - } - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - } - - r = sd_bus_message_skip(m, types + 1 + k); - if (r < 0) - return r; - - return 1; - } - - case SD_BUS_TYPE_VARIANT: { - const char *contents; - char x; - - r = sd_bus_message_peek_type(m, &x, &contents); - if (r <= 0) - return r; - - if (x != SD_BUS_TYPE_VARIANT) - return -ENXIO; - - r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents); - if (r <= 0) - return r; - - r = sd_bus_message_skip(m, contents); - if (r < 0) - return r; - assert(r != 0); - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - - r = sd_bus_message_skip(m, types + 1); - if (r < 0) - return r; - - return 1; - } - - case SD_BUS_TYPE_STRUCT_BEGIN: - case SD_BUS_TYPE_DICT_ENTRY_BEGIN: { - size_t k; - - r = signature_element_length(types, &k); - if (r < 0) - return r; - - { - char s[k-1]; - memcpy(s, types+1, k-2); - s[k-2] = 0; - - r = sd_bus_message_enter_container(m, *types == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s); - if (r <= 0) - return r; - - r = sd_bus_message_skip(m, s); - if (r < 0) - return r; - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - } - - r = sd_bus_message_skip(m, types + k); - if (r < 0) - return r; - - return 1; - } - - default: - return -EINVAL; - } -} - -_public_ int sd_bus_message_read_array( - sd_bus_message *m, - char type, - const void **ptr, - size_t *size) { - - struct bus_container *c; - void *p; - size_t sz; - ssize_t align; - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - assert_return(bus_type_is_trivial(type), -EINVAL); - assert_return(ptr, -EINVAL); - assert_return(size, -EINVAL); - assert_return(!BUS_MESSAGE_NEED_BSWAP(m), -EOPNOTSUPP); - - r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, CHAR_TO_STR(type)); - if (r <= 0) - return r; - - c = message_get_container(m); - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - align = bus_gvariant_get_alignment(CHAR_TO_STR(type)); - if (align < 0) - return align; - - sz = c->end - c->begin; - } else { - align = bus_type_get_alignment(type); - if (align < 0) - return align; - - sz = BUS_MESSAGE_BSWAP32(m, *c->array_size); - } - - if (sz == 0) - /* Zero length array, let's return some aligned - * pointer that is not NULL */ - p = (uint8_t*) NULL + align; - else { - r = message_peek_body(m, &m->rindex, align, sz, &p); - if (r < 0) - goto fail; - } - - r = sd_bus_message_exit_container(m); - if (r < 0) - goto fail; - - *ptr = (const void*) p; - *size = sz; - - return 1; - -fail: - message_quit_container(m); - return r; -} - -static int message_peek_fields( - sd_bus_message *m, - size_t *rindex, - size_t align, - size_t nbytes, - void **ret) { - - assert(m); - assert(rindex); - assert(align > 0); - - return buffer_peek(BUS_MESSAGE_FIELDS(m), m->fields_size, rindex, align, nbytes, ret); -} - -static int message_peek_field_uint32( - sd_bus_message *m, - size_t *ri, - size_t item_size, - uint32_t *ret) { - - int r; - void *q; - - assert(m); - assert(ri); - - if (BUS_MESSAGE_IS_GVARIANT(m) && item_size != 4) - return -EBADMSG; - - /* identical for gvariant and dbus1 */ - - r = message_peek_fields(m, ri, 4, 4, &q); - if (r < 0) - return r; - - if (ret) - *ret = BUS_MESSAGE_BSWAP32(m, *(uint32_t*) q); - - return 0; -} - -static int message_peek_field_uint64( - sd_bus_message *m, - size_t *ri, - size_t item_size, - uint64_t *ret) { - - int r; - void *q; - - assert(m); - assert(ri); - - if (BUS_MESSAGE_IS_GVARIANT(m) && item_size != 8) - return -EBADMSG; - - /* identical for gvariant and dbus1 */ - - r = message_peek_fields(m, ri, 8, 8, &q); - if (r < 0) - return r; - - if (ret) - *ret = BUS_MESSAGE_BSWAP64(m, *(uint64_t*) q); - - return 0; -} - -static int message_peek_field_string( - sd_bus_message *m, - bool (*validate)(const char *p), - size_t *ri, - size_t item_size, - const char **ret) { - - uint32_t l; - int r; - void *q; - - assert(m); - assert(ri); - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - - if (item_size <= 0) - return -EBADMSG; - - r = message_peek_fields(m, ri, 1, item_size, &q); - if (r < 0) - return r; - - l = item_size - 1; - } else { - r = message_peek_field_uint32(m, ri, 4, &l); - if (r < 0) - return r; - - r = message_peek_fields(m, ri, 1, l+1, &q); - if (r < 0) - return r; - } - - if (validate) { - if (!validate_nul(q, l)) - return -EBADMSG; - - if (!validate(q)) - return -EBADMSG; - } else { - if (!validate_string(q, l)) - return -EBADMSG; - } - - if (ret) - *ret = q; - - return 0; -} - -static int message_peek_field_signature( - sd_bus_message *m, - size_t *ri, - size_t item_size, - const char **ret) { - - size_t l; - int r; - void *q; - - assert(m); - assert(ri); - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - - if (item_size <= 0) - return -EBADMSG; - - r = message_peek_fields(m, ri, 1, item_size, &q); - if (r < 0) - return r; - - l = item_size - 1; - } else { - r = message_peek_fields(m, ri, 1, 1, &q); - if (r < 0) - return r; - - l = *(uint8_t*) q; - r = message_peek_fields(m, ri, 1, l+1, &q); - if (r < 0) - return r; - } - - if (!validate_signature(q, l)) - return -EBADMSG; - - if (ret) - *ret = q; - - return 0; -} - -static int message_skip_fields( - sd_bus_message *m, - size_t *ri, - uint32_t array_size, - const char **signature) { - - size_t original_index; - int r; - - assert(m); - assert(ri); - assert(signature); - assert(!BUS_MESSAGE_IS_GVARIANT(m)); - - original_index = *ri; - - for (;;) { - char t; - size_t l; - - if (array_size != (uint32_t) -1 && - array_size <= *ri - original_index) - return 0; - - t = **signature; - if (!t) - return 0; - - if (t == SD_BUS_TYPE_STRING) { - - r = message_peek_field_string(m, NULL, ri, 0, NULL); - if (r < 0) - return r; - - (*signature)++; - - } else if (t == SD_BUS_TYPE_OBJECT_PATH) { - - r = message_peek_field_string(m, object_path_is_valid, ri, 0, NULL); - if (r < 0) - return r; - - (*signature)++; - - } else if (t == SD_BUS_TYPE_SIGNATURE) { - - r = message_peek_field_signature(m, ri, 0, NULL); - if (r < 0) - return r; - - (*signature)++; - - } else if (bus_type_is_basic(t)) { - ssize_t align, k; - - align = bus_type_get_alignment(t); - k = bus_type_get_size(t); - assert(align > 0 && k > 0); - - r = message_peek_fields(m, ri, align, k, NULL); - if (r < 0) - return r; - - (*signature)++; - - } else if (t == SD_BUS_TYPE_ARRAY) { - - r = signature_element_length(*signature+1, &l); - if (r < 0) - return r; - - assert(l >= 1); - { - char sig[l-1], *s; - uint32_t nas; - int alignment; - - strncpy(sig, *signature + 1, l-1); - s = sig; - - alignment = bus_type_get_alignment(sig[0]); - if (alignment < 0) - return alignment; - - r = message_peek_field_uint32(m, ri, 0, &nas); - if (r < 0) - return r; - if (nas > BUS_ARRAY_MAX_SIZE) - return -EBADMSG; - - r = message_peek_fields(m, ri, alignment, 0, NULL); - if (r < 0) - return r; - - r = message_skip_fields(m, ri, nas, (const char**) &s); - if (r < 0) - return r; - } - - (*signature) += 1 + l; - - } else if (t == SD_BUS_TYPE_VARIANT) { - const char *s; - - r = message_peek_field_signature(m, ri, 0, &s); - if (r < 0) - return r; - - r = message_skip_fields(m, ri, (uint32_t) -1, (const char**) &s); - if (r < 0) - return r; - - (*signature)++; - - } else if (t == SD_BUS_TYPE_STRUCT || - t == SD_BUS_TYPE_DICT_ENTRY) { - - r = signature_element_length(*signature, &l); - if (r < 0) - return r; - - assert(l >= 2); - { - char sig[l-1], *s; - strncpy(sig, *signature + 1, l-1); - s = sig; - - r = message_skip_fields(m, ri, (uint32_t) -1, (const char**) &s); - if (r < 0) - return r; - } - - *signature += l; - } else - return -EINVAL; - } -} - -int bus_message_parse_fields(sd_bus_message *m) { - size_t ri; - int r; - uint32_t unix_fds = 0; - bool unix_fds_set = false; - void *offsets = NULL; - unsigned n_offsets = 0; - size_t sz = 0; - unsigned i = 0; - - assert(m); - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - char *p; - - /* Read the signature from the end of the body variant first */ - sz = bus_gvariant_determine_word_size(BUS_MESSAGE_SIZE(m), 0); - if (m->footer_accessible < 1 + sz) - return -EBADMSG; - - p = (char*) m->footer + m->footer_accessible - (1 + sz); - for (;;) { - if (p < (char*) m->footer) - return -EBADMSG; - - if (*p == 0) { - size_t l; - char *c; - - /* We found the beginning of the signature - * string, yay! We require the body to be a - * structure, so verify it and then strip the - * opening/closing brackets. */ - - l = ((char*) m->footer + m->footer_accessible) - p - (1 + sz); - if (l < 2 || - p[1] != SD_BUS_TYPE_STRUCT_BEGIN || - p[1 + l - 1] != SD_BUS_TYPE_STRUCT_END) - return -EBADMSG; - - c = strndup(p + 1 + 1, l - 2); - if (!c) - return -ENOMEM; - - free(m->root_container.signature); - m->root_container.signature = c; - break; - } - - p--; - } - - /* Calculate the actual user body size, by removing - * the trailing variant signature and struct offset - * table */ - m->user_body_size = m->body_size - ((char*) m->footer + m->footer_accessible - p); - - /* Pull out the offset table for the fields array */ - sz = bus_gvariant_determine_word_size(m->fields_size, 0); - if (sz > 0) { - size_t framing; - void *q; - - ri = m->fields_size - sz; - r = message_peek_fields(m, &ri, 1, sz, &q); - if (r < 0) - return r; - - framing = bus_gvariant_read_word_le(q, sz); - if (framing >= m->fields_size - sz) - return -EBADMSG; - if ((m->fields_size - framing) % sz != 0) - return -EBADMSG; - - ri = framing; - r = message_peek_fields(m, &ri, 1, m->fields_size - framing, &offsets); - if (r < 0) - return r; - - n_offsets = (m->fields_size - framing) / sz; - } - } else - m->user_body_size = m->body_size; - - ri = 0; - while (ri < m->fields_size) { - _cleanup_free_ char *sig = NULL; - const char *signature; - uint64_t field_type; - size_t item_size = (size_t) -1; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - uint64_t *u64; - - if (i >= n_offsets) - break; - - if (i == 0) - ri = 0; - else - ri = ALIGN_TO(bus_gvariant_read_word_le((uint8_t*) offsets + (i-1)*sz, sz), 8); - - r = message_peek_fields(m, &ri, 8, 8, (void**) &u64); - if (r < 0) - return r; - - field_type = BUS_MESSAGE_BSWAP64(m, *u64); - } else { - uint8_t *u8; - - r = message_peek_fields(m, &ri, 8, 1, (void**) &u8); - if (r < 0) - return r; - - field_type = *u8; - } - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - size_t where, end; - char *b; - void *q; - - end = bus_gvariant_read_word_le((uint8_t*) offsets + i*sz, sz); - - if (end < ri) - return -EBADMSG; - - where = ri = ALIGN_TO(ri, 8); - item_size = end - ri; - r = message_peek_fields(m, &where, 1, item_size, &q); - if (r < 0) - return r; - - b = memrchr(q, 0, item_size); - if (!b) - return -EBADMSG; - - sig = strndup(b+1, item_size - (b+1-(char*) q)); - if (!sig) - return -ENOMEM; - - signature = sig; - item_size = b - (char*) q; - } else { - r = message_peek_field_signature(m, &ri, 0, &signature); - if (r < 0) - return r; - } - - switch (field_type) { - - case _BUS_MESSAGE_HEADER_INVALID: - return -EBADMSG; - - case BUS_MESSAGE_HEADER_PATH: - - if (m->path) - return -EBADMSG; - - if (!streq(signature, "o")) - return -EBADMSG; - - r = message_peek_field_string(m, object_path_is_valid, &ri, item_size, &m->path); - break; - - case BUS_MESSAGE_HEADER_INTERFACE: - - if (m->interface) - return -EBADMSG; - - if (!streq(signature, "s")) - return -EBADMSG; - - r = message_peek_field_string(m, interface_name_is_valid, &ri, item_size, &m->interface); - break; - - case BUS_MESSAGE_HEADER_MEMBER: - - if (m->member) - return -EBADMSG; - - if (!streq(signature, "s")) - return -EBADMSG; - - r = message_peek_field_string(m, member_name_is_valid, &ri, item_size, &m->member); - break; - - case BUS_MESSAGE_HEADER_ERROR_NAME: - - if (m->error.name) - return -EBADMSG; - - if (!streq(signature, "s")) - return -EBADMSG; - - r = message_peek_field_string(m, error_name_is_valid, &ri, item_size, &m->error.name); - if (r >= 0) - m->error._need_free = -1; - - break; - - case BUS_MESSAGE_HEADER_DESTINATION: - - if (m->destination) - return -EBADMSG; - - if (!streq(signature, "s")) - return -EBADMSG; - - r = message_peek_field_string(m, service_name_is_valid, &ri, item_size, &m->destination); - break; - - case BUS_MESSAGE_HEADER_SENDER: - - if (m->sender) - return -EBADMSG; - - if (!streq(signature, "s")) - return -EBADMSG; - - r = message_peek_field_string(m, service_name_is_valid, &ri, item_size, &m->sender); - - if (r >= 0 && m->sender[0] == ':' && m->bus->bus_client && !m->bus->is_kernel) { - m->creds.unique_name = (char*) m->sender; - m->creds.mask |= SD_BUS_CREDS_UNIQUE_NAME & m->bus->creds_mask; - } - - break; - - - case BUS_MESSAGE_HEADER_SIGNATURE: { - const char *s; - char *c; - - if (BUS_MESSAGE_IS_GVARIANT(m)) /* only applies to dbus1 */ - return -EBADMSG; - - if (m->root_container.signature) - return -EBADMSG; - - if (!streq(signature, "g")) - return -EBADMSG; - - r = message_peek_field_signature(m, &ri, item_size, &s); - if (r < 0) - return r; - - c = strdup(s); - if (!c) - return -ENOMEM; - - free(m->root_container.signature); - m->root_container.signature = c; - break; - } - - case BUS_MESSAGE_HEADER_REPLY_SERIAL: - - if (m->reply_cookie != 0) - return -EBADMSG; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - /* 64bit on dbus2 */ - - if (!streq(signature, "t")) - return -EBADMSG; - - r = message_peek_field_uint64(m, &ri, item_size, &m->reply_cookie); - if (r < 0) - return r; - } else { - /* 32bit on dbus1 */ - uint32_t serial; - - if (!streq(signature, "u")) - return -EBADMSG; - - r = message_peek_field_uint32(m, &ri, item_size, &serial); - if (r < 0) - return r; - - m->reply_cookie = serial; - } - - if (m->reply_cookie == 0) - return -EBADMSG; - - break; - - case BUS_MESSAGE_HEADER_UNIX_FDS: - if (unix_fds_set) - return -EBADMSG; - - if (!streq(signature, "u")) - return -EBADMSG; - - r = message_peek_field_uint32(m, &ri, item_size, &unix_fds); - if (r < 0) - return -EBADMSG; - - unix_fds_set = true; - break; - - default: - if (!BUS_MESSAGE_IS_GVARIANT(m)) - r = message_skip_fields(m, &ri, (uint32_t) -1, (const char **) &signature); - } - - if (r < 0) - return r; - - i++; - } - - if (m->n_fds != unix_fds) - return -EBADMSG; - - switch (m->header->type) { - - case SD_BUS_MESSAGE_SIGNAL: - if (!m->path || !m->interface || !m->member) - return -EBADMSG; - - if (m->reply_cookie != 0) - return -EBADMSG; - - break; - - case SD_BUS_MESSAGE_METHOD_CALL: - - if (!m->path || !m->member) - return -EBADMSG; - - if (m->reply_cookie != 0) - return -EBADMSG; - - break; - - case SD_BUS_MESSAGE_METHOD_RETURN: - - if (m->reply_cookie == 0) - return -EBADMSG; - break; - - case SD_BUS_MESSAGE_METHOD_ERROR: - - if (m->reply_cookie == 0 || !m->error.name) - return -EBADMSG; - break; - } - - /* Refuse non-local messages that claim they are local */ - if (streq_ptr(m->path, "/org/freedesktop/DBus/Local")) - return -EBADMSG; - if (streq_ptr(m->interface, "org.freedesktop.DBus.Local")) - return -EBADMSG; - if (streq_ptr(m->sender, "org.freedesktop.DBus.Local")) - return -EBADMSG; - - m->root_container.end = m->user_body_size; - - if (BUS_MESSAGE_IS_GVARIANT(m)) { - r = build_struct_offsets( - m, - m->root_container.signature, - m->user_body_size, - &m->root_container.item_size, - &m->root_container.offsets, - &m->root_container.n_offsets); - if (r < 0) - return r; - } - - /* Try to read the error message, but if we can't it's a non-issue */ - if (m->header->type == SD_BUS_MESSAGE_METHOD_ERROR) - (void) sd_bus_message_read(m, "s", &m->error.message); - - return 0; -} - -_public_ int sd_bus_message_set_destination(sd_bus_message *m, const char *destination) { - assert_return(m, -EINVAL); - assert_return(destination, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(!m->destination, -EEXIST); - - return message_append_field_string(m, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, destination, &m->destination); -} - -int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz) { - size_t total; - void *p, *e; - unsigned i; - struct bus_body_part *part; - - assert(m); - assert(buffer); - assert(sz); - - total = BUS_MESSAGE_SIZE(m); - - p = malloc(total); - if (!p) - return -ENOMEM; - - e = mempcpy(p, m->header, BUS_MESSAGE_BODY_BEGIN(m)); - MESSAGE_FOREACH_PART(part, i, m) - e = mempcpy(e, part->data, part->size); - - assert(total == (size_t) ((uint8_t*) e - (uint8_t*) p)); - - *buffer = p; - *sz = total; - - return 0; -} - -int bus_message_read_strv_extend(sd_bus_message *m, char ***l) { - const char *s; - int r; - - assert(m); - assert(l); - - r = sd_bus_message_enter_container(m, 'a', "s"); - if (r <= 0) - return r; - - while ((r = sd_bus_message_read_basic(m, 's', &s)) > 0) { - r = strv_extend(l, s); - if (r < 0) - return r; - } - if (r < 0) - return r; - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - - return 1; -} - -_public_ int sd_bus_message_read_strv(sd_bus_message *m, char ***l) { - char **strv = NULL; - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - assert_return(l, -EINVAL); - - r = bus_message_read_strv_extend(m, &strv); - if (r <= 0) { - strv_free(strv); - return r; - } - - *l = strv; - return 1; -} - -static int bus_message_get_arg_skip( - sd_bus_message *m, - unsigned i, - char *_type, - const char **_contents) { - - unsigned j; - int r; - - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - for (j = 0;; j++) { - const char *contents; - char type; - - r = sd_bus_message_peek_type(m, &type, &contents); - if (r < 0) - return r; - if (r == 0) - return -ENXIO; - - /* Don't match against arguments after the first one we don't understand */ - if (!IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, SD_BUS_TYPE_SIGNATURE) && - !(type == SD_BUS_TYPE_ARRAY && STR_IN_SET(contents, "s", "o", "g"))) - return -ENXIO; - - if (j >= i) { - if (_contents) - *_contents = contents; - if (_type) - *_type = type; - return 0; - } - - r = sd_bus_message_skip(m, NULL); - if (r < 0) - return r; - } - -} - -int bus_message_get_arg(sd_bus_message *m, unsigned i, const char **str) { - char type; - int r; - - assert(m); - assert(str); - - r = bus_message_get_arg_skip(m, i, &type, NULL); - if (r < 0) - return r; - - if (!IN_SET(type, SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, SD_BUS_TYPE_SIGNATURE)) - return -ENXIO; - - return sd_bus_message_read_basic(m, type, str); -} - -int bus_message_get_arg_strv(sd_bus_message *m, unsigned i, char ***strv) { - const char *contents; - char type; - int r; - - assert(m); - assert(strv); - - r = bus_message_get_arg_skip(m, i, &type, &contents); - if (r < 0) - return r; - - if (type != SD_BUS_TYPE_ARRAY) - return -ENXIO; - if (!STR_IN_SET(contents, "s", "o", "g")) - return -ENXIO; - - return sd_bus_message_read_strv(m, strv); -} - -_public_ int sd_bus_message_get_errno(sd_bus_message *m) { - assert_return(m, EINVAL); - - if (m->header->type != SD_BUS_MESSAGE_METHOD_ERROR) - return 0; - - return sd_bus_error_get_errno(&m->error); -} - -_public_ const char* sd_bus_message_get_signature(sd_bus_message *m, int complete) { - struct bus_container *c; - - assert_return(m, NULL); - - c = complete ? &m->root_container : message_get_container(m); - return strempty(c->signature); -} - -_public_ int sd_bus_message_is_empty(sd_bus_message *m) { - assert_return(m, -EINVAL); - - return isempty(m->root_container.signature); -} - -_public_ int sd_bus_message_has_signature(sd_bus_message *m, const char *signature) { - assert_return(m, -EINVAL); - - return streq(strempty(m->root_container.signature), strempty(signature)); -} - -_public_ int sd_bus_message_copy(sd_bus_message *m, sd_bus_message *source, int all) { - bool done_something = false; - int r; - - assert_return(m, -EINVAL); - assert_return(source, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(source->sealed, -EPERM); - - do { - const char *contents; - char type; - union { - uint8_t u8; - uint16_t u16; - int16_t s16; - uint32_t u32; - int32_t s32; - uint64_t u64; - int64_t s64; - double d64; - const char *string; - int i; - } basic; - - r = sd_bus_message_peek_type(source, &type, &contents); - if (r < 0) - return r; - if (r == 0) - break; - - done_something = true; - - if (bus_type_is_container(type) > 0) { - - r = sd_bus_message_enter_container(source, type, contents); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, type, contents); - if (r < 0) - return r; - - r = sd_bus_message_copy(m, source, true); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_message_exit_container(source); - if (r < 0) - return r; - - continue; - } - - r = sd_bus_message_read_basic(source, type, &basic); - if (r < 0) - return r; - - assert(r > 0); - - if (type == SD_BUS_TYPE_OBJECT_PATH || - type == SD_BUS_TYPE_SIGNATURE || - type == SD_BUS_TYPE_STRING) - r = sd_bus_message_append_basic(m, type, basic.string); - else - r = sd_bus_message_append_basic(m, type, &basic); - - if (r < 0) - return r; - - } while (all); - - return done_something; -} - -_public_ int sd_bus_message_verify_type(sd_bus_message *m, char type, const char *contents) { - const char *c; - char t; - int r; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - assert_return(!type || bus_type_is_valid(type), -EINVAL); - assert_return(!contents || signature_is_valid(contents, true), -EINVAL); - assert_return(type || contents, -EINVAL); - assert_return(!contents || !type || bus_type_is_container(type), -EINVAL); - - r = sd_bus_message_peek_type(m, &t, &c); - if (r <= 0) - return r; - - if (type != 0 && type != t) - return 0; - - if (contents && !streq_ptr(contents, c)) - return 0; - - return 1; -} - -_public_ sd_bus *sd_bus_message_get_bus(sd_bus_message *m) { - assert_return(m, NULL); - - return m->bus; -} - -int bus_message_remarshal(sd_bus *bus, sd_bus_message **m) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *n = NULL; - usec_t timeout; - int r; - - assert(bus); - assert(m); - assert(*m); - - switch ((*m)->header->type) { - - case SD_BUS_MESSAGE_SIGNAL: - r = sd_bus_message_new_signal(bus, &n, (*m)->path, (*m)->interface, (*m)->member); - if (r < 0) - return r; - - break; - - case SD_BUS_MESSAGE_METHOD_CALL: - r = sd_bus_message_new_method_call(bus, &n, (*m)->destination, (*m)->path, (*m)->interface, (*m)->member); - if (r < 0) - return r; - - break; - - case SD_BUS_MESSAGE_METHOD_RETURN: - case SD_BUS_MESSAGE_METHOD_ERROR: - - n = message_new(bus, (*m)->header->type); - if (!n) - return -ENOMEM; - - n->reply_cookie = (*m)->reply_cookie; - - r = message_append_reply_cookie(n, n->reply_cookie); - if (r < 0) - return r; - - if ((*m)->header->type == SD_BUS_MESSAGE_METHOD_ERROR && (*m)->error.name) { - r = message_append_field_string(n, BUS_MESSAGE_HEADER_ERROR_NAME, SD_BUS_TYPE_STRING, (*m)->error.name, &n->error.message); - if (r < 0) - return r; - - n->error._need_free = -1; - } - - break; - - default: - return -EINVAL; - } - - if ((*m)->destination && !n->destination) { - r = message_append_field_string(n, BUS_MESSAGE_HEADER_DESTINATION, SD_BUS_TYPE_STRING, (*m)->destination, &n->destination); - if (r < 0) - return r; - } - - if ((*m)->sender && !n->sender) { - r = message_append_field_string(n, BUS_MESSAGE_HEADER_SENDER, SD_BUS_TYPE_STRING, (*m)->sender, &n->sender); - if (r < 0) - return r; - } - - n->header->flags |= (*m)->header->flags & (BUS_MESSAGE_NO_REPLY_EXPECTED|BUS_MESSAGE_NO_AUTO_START); - - r = sd_bus_message_copy(n, *m, true); - if (r < 0) - return r; - - timeout = (*m)->timeout; - if (timeout == 0 && !((*m)->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)) - timeout = BUS_DEFAULT_TIMEOUT; - - r = bus_message_seal(n, BUS_MESSAGE_COOKIE(*m), timeout); - if (r < 0) - return r; - - sd_bus_message_unref(*m); - *m = n; - n = NULL; - - return 0; -} - -int bus_message_append_sender(sd_bus_message *m, const char *sender) { - assert(m); - assert(sender); - - assert_return(!m->sealed, -EPERM); - assert_return(!m->sender, -EPERM); - - return message_append_field_string(m, BUS_MESSAGE_HEADER_SENDER, SD_BUS_TYPE_STRING, sender, &m->sender); -} - -_public_ int sd_bus_message_get_priority(sd_bus_message *m, int64_t *priority) { - assert_return(m, -EINVAL); - assert_return(priority, -EINVAL); - - *priority = m->priority; - return 0; -} - -_public_ int sd_bus_message_set_priority(sd_bus_message *m, int64_t priority) { - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - m->priority = priority; - return 0; -} diff --git a/src/libsystemd/sd-bus/bus-message.h b/src/libsystemd/sd-bus/bus-message.h deleted file mode 100644 index 4710c106b9..0000000000 --- a/src/libsystemd/sd-bus/bus-message.h +++ /dev/null @@ -1,244 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <byteswap.h> -#include <stdbool.h> -#include <sys/socket.h> - -#include "sd-bus.h" - -#include "bus-creds.h" -#include "bus-protocol.h" -#include "macro.h" -#include "time-util.h" - -struct bus_container { - char enclosing; - bool need_offsets:1; - - /* Indexes into the signature string */ - unsigned index, saved_index; - char *signature; - - size_t before, begin, end; - - /* dbus1: pointer to the array size value, if this is a value */ - uint32_t *array_size; - - /* gvariant: list of offsets to end of children if this is struct/dict entry/array */ - size_t *offsets, n_offsets, offsets_allocated, offset_index; - size_t item_size; - - char *peeked_signature; -}; - -struct bus_body_part { - struct bus_body_part *next; - void *data; - void *mmap_begin; - size_t size; - size_t mapped; - size_t allocated; - uint64_t memfd_offset; - int memfd; - bool free_this:1; - bool munmap_this:1; - bool sealed:1; - bool is_zero:1; -}; - -struct sd_bus_message { - unsigned n_ref; - - sd_bus *bus; - - uint64_t reply_cookie; - - const char *path; - const char *interface; - const char *member; - const char *destination; - const char *sender; - - sd_bus_error error; - - sd_bus_creds creds; - - usec_t monotonic; - usec_t realtime; - uint64_t seqnum; - int64_t priority; - uint64_t verify_destination_id; - - bool sealed:1; - bool dont_send:1; - bool allow_fds:1; - bool free_header:1; - bool free_kdbus:1; - bool free_fds:1; - bool release_kdbus:1; - bool poisoned:1; - - /* The first and last bytes of the message */ - struct bus_header *header; - void *footer; - - /* How many bytes are accessible in the above pointers */ - size_t header_accessible; - size_t footer_accessible; - - size_t fields_size; - size_t body_size; - size_t user_body_size; - - struct bus_body_part body; - struct bus_body_part *body_end; - unsigned n_body_parts; - - size_t rindex; - struct bus_body_part *cached_rindex_part; - size_t cached_rindex_part_begin; - - uint32_t n_fds; - int *fds; - - struct bus_container root_container, *containers; - size_t n_containers; - size_t containers_allocated; - - struct iovec *iovec; - struct iovec iovec_fixed[2]; - unsigned n_iovec; - - struct kdbus_msg *kdbus; - - char *peeked_signature; - - /* If set replies to this message must carry the signature - * specified here to successfully seal. This is initialized - * from the vtable data */ - const char *enforced_reply_signature; - - usec_t timeout; - - char sender_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1]; - char destination_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1]; - char *destination_ptr; - - size_t header_offsets[_BUS_MESSAGE_HEADER_MAX]; - unsigned n_header_offsets; -}; - -static inline bool BUS_MESSAGE_NEED_BSWAP(sd_bus_message *m) { - return m->header->endian != BUS_NATIVE_ENDIAN; -} - -static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) { - return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u; -} - -static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) { - return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u; -} - -static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) { - return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u; -} - -static inline uint64_t BUS_MESSAGE_COOKIE(sd_bus_message *m) { - if (m->header->version == 2) - return BUS_MESSAGE_BSWAP64(m, m->header->dbus2.cookie); - - return BUS_MESSAGE_BSWAP32(m, m->header->dbus1.serial); -} - -static inline size_t BUS_MESSAGE_SIZE(sd_bus_message *m) { - return - sizeof(struct bus_header) + - ALIGN8(m->fields_size) + - m->body_size; -} - -static inline size_t BUS_MESSAGE_BODY_BEGIN(sd_bus_message *m) { - return - sizeof(struct bus_header) + - ALIGN8(m->fields_size); -} - -static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) { - return (uint8_t*) m->header + sizeof(struct bus_header); -} - -static inline bool BUS_MESSAGE_IS_GVARIANT(sd_bus_message *m) { - return m->header->version == 2; -} - -int bus_message_seal(sd_bus_message *m, uint64_t serial, usec_t timeout); -int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz); -int bus_message_read_strv_extend(sd_bus_message *m, char ***l); - -int bus_message_from_header( - sd_bus *bus, - void *header, - size_t header_accessible, - void *footer, - size_t footer_accessible, - size_t message_size, - int *fds, - unsigned n_fds, - const char *label, - size_t extra, - sd_bus_message **ret); - -int bus_message_from_malloc( - sd_bus *bus, - void *buffer, - size_t length, - int *fds, - unsigned n_fds, - const char *label, - sd_bus_message **ret); - -int bus_message_get_arg(sd_bus_message *m, unsigned i, const char **str); -int bus_message_get_arg_strv(sd_bus_message *m, unsigned i, char ***strv); - -int bus_message_append_ap(sd_bus_message *m, const char *types, va_list ap); - -int bus_message_parse_fields(sd_bus_message *m); - -struct bus_body_part *message_append_part(sd_bus_message *m); - -#define MESSAGE_FOREACH_PART(part, i, m) \ - for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next) - -int bus_body_part_map(struct bus_body_part *part); -void bus_body_part_unmap(struct bus_body_part *part); - -int bus_message_to_errno(sd_bus_message *m); - -int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m); - -int bus_message_remarshal(sd_bus *bus, sd_bus_message **m); - -int bus_message_append_sender(sd_bus_message *m, const char *sender); - -void bus_message_set_sender_driver(sd_bus *bus, sd_bus_message *m); -void bus_message_set_sender_local(sd_bus *bus, sd_bus_message *m); diff --git a/src/libsystemd/sd-bus/bus-objects.c b/src/libsystemd/sd-bus/bus-objects.c deleted file mode 100644 index 1f285ae8a6..0000000000 --- a/src/libsystemd/sd-bus/bus-objects.c +++ /dev/null @@ -1,2806 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "alloc-util.h" -#include "bus-internal.h" -#include "bus-introspect.h" -#include "bus-message.h" -#include "bus-objects.h" -#include "bus-signature.h" -#include "bus-slot.h" -#include "bus-type.h" -#include "bus-util.h" -#include "set.h" -#include "string-util.h" -#include "strv.h" - -static int node_vtable_get_userdata( - sd_bus *bus, - const char *path, - struct node_vtable *c, - void **userdata, - sd_bus_error *error) { - - sd_bus_slot *s; - void *u; - int r; - - assert(bus); - assert(path); - assert(c); - - s = container_of(c, sd_bus_slot, node_vtable); - u = s->userdata; - if (c->find) { - bus->current_slot = sd_bus_slot_ref(s); - bus->current_userdata = u; - r = c->find(bus, path, c->interface, u, &u, error); - bus->current_userdata = NULL; - bus->current_slot = sd_bus_slot_unref(s); - - if (r < 0) - return r; - if (sd_bus_error_is_set(error)) - return -sd_bus_error_get_errno(error); - if (r == 0) - return r; - } - - if (userdata) - *userdata = u; - - return 1; -} - -static void *vtable_method_convert_userdata(const sd_bus_vtable *p, void *u) { - assert(p); - - return (uint8_t*) u + p->x.method.offset; -} - -static void *vtable_property_convert_userdata(const sd_bus_vtable *p, void *u) { - assert(p); - - return (uint8_t*) u + p->x.property.offset; -} - -static int vtable_property_get_userdata( - sd_bus *bus, - const char *path, - struct vtable_member *p, - void **userdata, - sd_bus_error *error) { - - void *u; - int r; - - assert(bus); - assert(path); - assert(p); - assert(userdata); - - r = node_vtable_get_userdata(bus, path, p->parent, &u, error); - if (r <= 0) - return r; - if (bus->nodes_modified) - return 0; - - *userdata = vtable_property_convert_userdata(p->vtable, u); - return 1; -} - -static int add_enumerated_to_set( - sd_bus *bus, - const char *prefix, - struct node_enumerator *first, - Set *s, - sd_bus_error *error) { - - struct node_enumerator *c; - int r; - - assert(bus); - assert(prefix); - assert(s); - - LIST_FOREACH(enumerators, c, first) { - char **children = NULL, **k; - sd_bus_slot *slot; - - if (bus->nodes_modified) - return 0; - - slot = container_of(c, sd_bus_slot, node_enumerator); - - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_userdata = slot->userdata; - r = c->callback(bus, prefix, slot->userdata, &children, error); - bus->current_userdata = NULL; - bus->current_slot = sd_bus_slot_unref(slot); - - if (r < 0) - return r; - if (sd_bus_error_is_set(error)) - return -sd_bus_error_get_errno(error); - - STRV_FOREACH(k, children) { - if (r < 0) { - free(*k); - continue; - } - - if (!object_path_is_valid(*k)){ - free(*k); - r = -EINVAL; - continue; - } - - if (!object_path_startswith(*k, prefix)) { - free(*k); - continue; - } - - r = set_consume(s, *k); - if (r == -EEXIST) - r = 0; - } - - free(children); - if (r < 0) - return r; - } - - return 0; -} - -enum { - /* if set, add_subtree() works recursively */ - CHILDREN_RECURSIVE = (1U << 1), - /* if set, add_subtree() scans object-manager hierarchies recursively */ - CHILDREN_SUBHIERARCHIES = (1U << 0), -}; - -static int add_subtree_to_set( - sd_bus *bus, - const char *prefix, - struct node *n, - unsigned int flags, - Set *s, - sd_bus_error *error) { - - struct node *i; - int r; - - assert(bus); - assert(prefix); - assert(n); - assert(s); - - r = add_enumerated_to_set(bus, prefix, n->enumerators, s, error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - - LIST_FOREACH(siblings, i, n->child) { - char *t; - - if (!object_path_startswith(i->path, prefix)) - continue; - - t = strdup(i->path); - if (!t) - return -ENOMEM; - - r = set_consume(s, t); - if (r < 0 && r != -EEXIST) - return r; - - if ((flags & CHILDREN_RECURSIVE) && - ((flags & CHILDREN_SUBHIERARCHIES) || !i->object_managers)) { - r = add_subtree_to_set(bus, prefix, i, flags, s, error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - } - - return 0; -} - -static int get_child_nodes( - sd_bus *bus, - const char *prefix, - struct node *n, - unsigned int flags, - Set **_s, - sd_bus_error *error) { - - Set *s = NULL; - int r; - - assert(bus); - assert(prefix); - assert(n); - assert(_s); - - s = set_new(&string_hash_ops); - if (!s) - return -ENOMEM; - - r = add_subtree_to_set(bus, prefix, n, flags, s, error); - if (r < 0) { - set_free_free(s); - return r; - } - - *_s = s; - return 0; -} - -static int node_callbacks_run( - sd_bus *bus, - sd_bus_message *m, - struct node_callback *first, - bool require_fallback, - bool *found_object) { - - struct node_callback *c; - int r; - - assert(bus); - assert(m); - assert(found_object); - - LIST_FOREACH(callbacks, c, first) { - _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; - sd_bus_slot *slot; - - if (bus->nodes_modified) - return 0; - - if (require_fallback && !c->is_fallback) - continue; - - *found_object = true; - - if (c->last_iteration == bus->iteration_counter) - continue; - - c->last_iteration = bus->iteration_counter; - - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - slot = container_of(c, sd_bus_slot, node_callback); - - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_handler = c->callback; - bus->current_userdata = slot->userdata; - r = c->callback(m, slot->userdata, &error_buffer); - bus->current_userdata = NULL; - bus->current_handler = NULL; - bus->current_slot = sd_bus_slot_unref(slot); - - r = bus_maybe_reply_error(m, r, &error_buffer); - if (r != 0) - return r; - } - - return 0; -} - -#define CAPABILITY_SHIFT(x) (((x) >> __builtin_ctzll(_SD_BUS_VTABLE_CAPABILITY_MASK)) & 0xFFFF) - -static int check_access(sd_bus *bus, sd_bus_message *m, struct vtable_member *c, sd_bus_error *error) { - uint64_t cap; - int r; - - assert(bus); - assert(m); - assert(c); - - /* If the entire bus is trusted let's grant access */ - if (bus->trusted) - return 0; - - /* If the member is marked UNPRIVILEGED let's grant access */ - if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED) - return 0; - - /* Check have the caller has the requested capability - * set. Note that the flags value contains the capability - * number plus one, which we need to subtract here. We do this - * so that we have 0 as special value for "default - * capability". */ - cap = CAPABILITY_SHIFT(c->vtable->flags); - if (cap == 0) - cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags); - if (cap == 0) - cap = CAP_SYS_ADMIN; - else - cap --; - - r = sd_bus_query_sender_privilege(m, cap); - if (r < 0) - return r; - if (r > 0) - return 0; - - return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member); -} - -static int method_callbacks_run( - sd_bus *bus, - sd_bus_message *m, - struct vtable_member *c, - bool require_fallback, - bool *found_object) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - const char *signature; - void *u; - int r; - - assert(bus); - assert(m); - assert(c); - assert(found_object); - - if (require_fallback && !c->parent->is_fallback) - return 0; - - r = check_access(bus, m, c, &error); - if (r < 0) - return bus_maybe_reply_error(m, r, &error); - - r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error); - if (r <= 0) - return bus_maybe_reply_error(m, r, &error); - if (bus->nodes_modified) - return 0; - - u = vtable_method_convert_userdata(c->vtable, u); - - *found_object = true; - - if (c->last_iteration == bus->iteration_counter) - return 0; - - c->last_iteration = bus->iteration_counter; - - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - signature = sd_bus_message_get_signature(m, true); - if (!signature) - return -EINVAL; - - if (!streq(strempty(c->vtable->x.method.signature), signature)) - return sd_bus_reply_method_errorf( - m, - SD_BUS_ERROR_INVALID_ARGS, - "Invalid arguments '%s' to call %s.%s(), expecting '%s'.", - signature, c->interface, c->member, strempty(c->vtable->x.method.signature)); - - /* Keep track what the signature of the reply to this message - * should be, so that this can be enforced when sealing the - * reply. */ - m->enforced_reply_signature = strempty(c->vtable->x.method.result); - - if (c->vtable->x.method.handler) { - sd_bus_slot *slot; - - slot = container_of(c->parent, sd_bus_slot, node_vtable); - - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_handler = c->vtable->x.method.handler; - bus->current_userdata = u; - r = c->vtable->x.method.handler(m, u, &error); - bus->current_userdata = NULL; - bus->current_handler = NULL; - bus->current_slot = sd_bus_slot_unref(slot); - - return bus_maybe_reply_error(m, r, &error); - } - - /* If the method callback is NULL, make this a successful NOP */ - r = sd_bus_reply_method_return(m, NULL); - if (r < 0) - return r; - - return 1; -} - -static int invoke_property_get( - sd_bus *bus, - sd_bus_slot *slot, - const sd_bus_vtable *v, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - const void *p; - int r; - - assert(bus); - assert(slot); - assert(v); - assert(path); - assert(interface); - assert(property); - assert(reply); - - if (v->x.property.get) { - - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_userdata = userdata; - r = v->x.property.get(bus, path, interface, property, reply, userdata, error); - bus->current_userdata = NULL; - bus->current_slot = sd_bus_slot_unref(slot); - - if (r < 0) - return r; - if (sd_bus_error_is_set(error)) - return -sd_bus_error_get_errno(error); - return r; - } - - /* Automatic handling if no callback is defined. */ - - if (streq(v->x.property.signature, "as")) - return sd_bus_message_append_strv(reply, *(char***) userdata); - - assert(signature_is_single(v->x.property.signature, false)); - assert(bus_type_is_basic(v->x.property.signature[0])); - - switch (v->x.property.signature[0]) { - - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_SIGNATURE: - p = strempty(*(char**) userdata); - break; - - case SD_BUS_TYPE_OBJECT_PATH: - p = *(char**) userdata; - assert(p); - break; - - default: - p = userdata; - break; - } - - return sd_bus_message_append_basic(reply, v->x.property.signature[0], p); -} - -static int invoke_property_set( - sd_bus *bus, - sd_bus_slot *slot, - const sd_bus_vtable *v, - const char *path, - const char *interface, - const char *property, - sd_bus_message *value, - void *userdata, - sd_bus_error *error) { - - int r; - - assert(bus); - assert(slot); - assert(v); - assert(path); - assert(interface); - assert(property); - assert(value); - - if (v->x.property.set) { - - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_userdata = userdata; - r = v->x.property.set(bus, path, interface, property, value, userdata, error); - bus->current_userdata = NULL; - bus->current_slot = sd_bus_slot_unref(slot); - - if (r < 0) - return r; - if (sd_bus_error_is_set(error)) - return -sd_bus_error_get_errno(error); - return r; - } - - /* Automatic handling if no callback is defined. */ - - assert(signature_is_single(v->x.property.signature, false)); - assert(bus_type_is_basic(v->x.property.signature[0])); - - switch (v->x.property.signature[0]) { - - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: { - const char *p; - char *n; - - r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p); - if (r < 0) - return r; - - n = strdup(p); - if (!n) - return -ENOMEM; - - free(*(char**) userdata); - *(char**) userdata = n; - - break; - } - - default: - r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata); - if (r < 0) - return r; - - break; - } - - return 1; -} - -static int property_get_set_callbacks_run( - sd_bus *bus, - sd_bus_message *m, - struct vtable_member *c, - bool require_fallback, - bool is_get, - bool *found_object) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - sd_bus_slot *slot; - void *u = NULL; - int r; - - assert(bus); - assert(m); - assert(c); - assert(found_object); - - if (require_fallback && !c->parent->is_fallback) - return 0; - - r = vtable_property_get_userdata(bus, m->path, c, &u, &error); - if (r <= 0) - return bus_maybe_reply_error(m, r, &error); - if (bus->nodes_modified) - return 0; - - slot = container_of(c->parent, sd_bus_slot, node_vtable); - - *found_object = true; - - r = sd_bus_message_new_method_return(m, &reply); - if (r < 0) - return r; - - if (is_get) { - /* Note that we do not protect against reexecution - * here (using the last_iteration check, see below), - * should the node tree have changed and we got called - * again. We assume that property Get() calls are - * ultimately without side-effects or if they aren't - * then at least idempotent. */ - - r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature); - if (r < 0) - return r; - - /* Note that we do not do an access check here. Read - * access to properties is always unrestricted, since - * PropertiesChanged signals broadcast contents - * anyway. */ - - r = invoke_property_get(bus, slot, c->vtable, m->path, c->interface, c->member, reply, u, &error); - if (r < 0) - return bus_maybe_reply_error(m, r, &error); - - if (bus->nodes_modified) - return 0; - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - } else { - const char *signature = NULL; - char type = 0; - - if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) - return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member); - - /* Avoid that we call the set routine more than once - * if the processing of this message got restarted - * because the node tree changed. */ - if (c->last_iteration == bus->iteration_counter) - return 0; - - c->last_iteration = bus->iteration_counter; - - r = sd_bus_message_peek_type(m, &type, &signature); - if (r < 0) - return r; - - if (type != 'v' || !streq(strempty(signature), strempty(c->vtable->x.property.signature))) - return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Incorrect parameters for property '%s', expected '%s', got '%s'.", c->member, strempty(c->vtable->x.property.signature), strempty(signature)); - - r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature); - if (r < 0) - return r; - - r = check_access(bus, m, c, &error); - if (r < 0) - return bus_maybe_reply_error(m, r, &error); - - r = invoke_property_set(bus, slot, c->vtable, m->path, c->interface, c->member, m, u, &error); - if (r < 0) - return bus_maybe_reply_error(m, r, &error); - - if (bus->nodes_modified) - return 0; - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - } - - r = sd_bus_send(bus, reply, NULL); - if (r < 0) - return r; - - return 1; -} - -static int vtable_append_one_property( - sd_bus *bus, - sd_bus_message *reply, - const char *path, - struct node_vtable *c, - const sd_bus_vtable *v, - void *userdata, - sd_bus_error *error) { - - sd_bus_slot *slot; - int r; - - assert(bus); - assert(reply); - assert(path); - assert(c); - assert(v); - - r = sd_bus_message_open_container(reply, 'e', "sv"); - if (r < 0) - return r; - - r = sd_bus_message_append(reply, "s", v->x.property.member); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'v', v->x.property.signature); - if (r < 0) - return r; - - slot = container_of(c, sd_bus_slot, node_vtable); - - r = invoke_property_get(bus, slot, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - return 0; -} - -static int vtable_append_all_properties( - sd_bus *bus, - sd_bus_message *reply, - const char *path, - struct node_vtable *c, - void *userdata, - sd_bus_error *error) { - - const sd_bus_vtable *v; - int r; - - assert(bus); - assert(reply); - assert(path); - assert(c); - - if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) - return 1; - - for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { - if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) - continue; - - if (v->flags & SD_BUS_VTABLE_HIDDEN) - continue; - - if (v->flags & SD_BUS_VTABLE_PROPERTY_EXPLICIT) - continue; - - r = vtable_append_one_property(bus, reply, path, c, v, userdata, error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - - return 1; -} - -static int property_get_all_callbacks_run( - sd_bus *bus, - sd_bus_message *m, - struct node_vtable *first, - bool require_fallback, - const char *iface, - bool *found_object) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - struct node_vtable *c; - bool found_interface; - int r; - - assert(bus); - assert(m); - assert(found_object); - - r = sd_bus_message_new_method_return(m, &reply); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'a', "{sv}"); - if (r < 0) - return r; - - found_interface = !iface || - streq(iface, "org.freedesktop.DBus.Properties") || - streq(iface, "org.freedesktop.DBus.Peer") || - streq(iface, "org.freedesktop.DBus.Introspectable"); - - LIST_FOREACH(vtables, c, first) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - void *u; - - if (require_fallback && !c->is_fallback) - continue; - - r = node_vtable_get_userdata(bus, m->path, c, &u, &error); - if (r < 0) - return bus_maybe_reply_error(m, r, &error); - if (bus->nodes_modified) - return 0; - if (r == 0) - continue; - - *found_object = true; - - if (iface && !streq(c->interface, iface)) - continue; - found_interface = true; - - r = vtable_append_all_properties(bus, reply, m->path, c, u, &error); - if (r < 0) - return bus_maybe_reply_error(m, r, &error); - if (bus->nodes_modified) - return 0; - } - - if (!found_interface) { - r = sd_bus_reply_method_errorf( - m, - SD_BUS_ERROR_UNKNOWN_INTERFACE, - "Unknown interface '%s'.", iface); - if (r < 0) - return r; - - return 1; - } - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - r = sd_bus_send(bus, reply, NULL); - if (r < 0) - return r; - - return 1; -} - -static int bus_node_exists( - sd_bus *bus, - struct node *n, - const char *path, - bool require_fallback) { - - struct node_vtable *c; - struct node_callback *k; - int r; - - assert(bus); - assert(n); - assert(path); - - /* Tests if there's anything attached directly to this node - * for the specified path */ - - if (!require_fallback && (n->enumerators || n->object_managers)) - return true; - - LIST_FOREACH(callbacks, k, n->callbacks) { - if (require_fallback && !k->is_fallback) - continue; - - return 1; - } - - LIST_FOREACH(vtables, c, n->vtables) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - - if (require_fallback && !c->is_fallback) - continue; - - r = node_vtable_get_userdata(bus, path, c, NULL, &error); - if (r != 0) - return r; - if (bus->nodes_modified) - return 0; - } - - return 0; -} - -static int process_introspect( - sd_bus *bus, - sd_bus_message *m, - struct node *n, - bool require_fallback, - bool *found_object) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - _cleanup_set_free_free_ Set *s = NULL; - const char *previous_interface = NULL; - struct introspect intro; - struct node_vtable *c; - bool empty; - int r; - - assert(bus); - assert(m); - assert(n); - assert(found_object); - - r = get_child_nodes(bus, m->path, n, 0, &s, &error); - if (r < 0) - return bus_maybe_reply_error(m, r, &error); - if (bus->nodes_modified) - return 0; - - r = introspect_begin(&intro, bus->trusted); - if (r < 0) - return r; - - r = introspect_write_default_interfaces(&intro, !require_fallback && n->object_managers); - if (r < 0) - return r; - - empty = set_isempty(s); - - LIST_FOREACH(vtables, c, n->vtables) { - if (require_fallback && !c->is_fallback) - continue; - - r = node_vtable_get_userdata(bus, m->path, c, NULL, &error); - if (r < 0) { - r = bus_maybe_reply_error(m, r, &error); - goto finish; - } - if (bus->nodes_modified) { - r = 0; - goto finish; - } - if (r == 0) - continue; - - empty = false; - - if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) - continue; - - if (!streq_ptr(previous_interface, c->interface)) { - - if (previous_interface) - fputs(" </interface>\n", intro.f); - - fprintf(intro.f, " <interface name=\"%s\">\n", c->interface); - } - - r = introspect_write_interface(&intro, c->vtable); - if (r < 0) - goto finish; - - previous_interface = c->interface; - } - - if (previous_interface) - fputs(" </interface>\n", intro.f); - - if (empty) { - /* Nothing?, let's see if we exist at all, and if not - * refuse to do anything */ - r = bus_node_exists(bus, n, m->path, require_fallback); - if (r <= 0) - goto finish; - if (bus->nodes_modified) { - r = 0; - goto finish; - } - } - - *found_object = true; - - r = introspect_write_child_nodes(&intro, s, m->path); - if (r < 0) - goto finish; - - r = introspect_finish(&intro, bus, m, &reply); - if (r < 0) - goto finish; - - r = sd_bus_send(bus, reply, NULL); - if (r < 0) - goto finish; - - r = 1; - -finish: - introspect_free(&intro); - return r; -} - -static int object_manager_serialize_path( - sd_bus *bus, - sd_bus_message *reply, - const char *prefix, - const char *path, - bool require_fallback, - sd_bus_error *error) { - - const char *previous_interface = NULL; - bool found_something = false; - struct node_vtable *i; - struct node *n; - int r; - - assert(bus); - assert(reply); - assert(prefix); - assert(path); - assert(error); - - n = hashmap_get(bus->nodes, prefix); - if (!n) - return 0; - - LIST_FOREACH(vtables, i, n->vtables) { - void *u; - - if (require_fallback && !i->is_fallback) - continue; - - r = node_vtable_get_userdata(bus, path, i, &u, error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - if (r == 0) - continue; - - if (!found_something) { - - /* Open the object part */ - - r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}"); - if (r < 0) - return r; - - r = sd_bus_message_append(reply, "o", path); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}"); - if (r < 0) - return r; - - found_something = true; - } - - if (!streq_ptr(previous_interface, i->interface)) { - - /* Maybe close the previous interface part */ - - if (previous_interface) { - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - } - - /* Open the new interface part */ - - r = sd_bus_message_open_container(reply, 'e', "sa{sv}"); - if (r < 0) - return r; - - r = sd_bus_message_append(reply, "s", i->interface); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'a', "{sv}"); - if (r < 0) - return r; - } - - r = vtable_append_all_properties(bus, reply, path, i, u, error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - - previous_interface = i->interface; - } - - if (previous_interface) { - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - } - - if (found_something) { - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - } - - return 1; -} - -static int object_manager_serialize_path_and_fallbacks( - sd_bus *bus, - sd_bus_message *reply, - const char *path, - sd_bus_error *error) { - - char *prefix; - int r; - - assert(bus); - assert(reply); - assert(path); - assert(error); - - /* First, add all vtables registered for this path */ - r = object_manager_serialize_path(bus, reply, path, path, false, error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - - /* Second, add fallback vtables registered for any of the prefixes */ - prefix = alloca(strlen(path) + 1); - OBJECT_PATH_FOREACH_PREFIX(prefix, path) { - r = object_manager_serialize_path(bus, reply, prefix, path, true, error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - - return 0; -} - -static int process_get_managed_objects( - sd_bus *bus, - sd_bus_message *m, - struct node *n, - bool require_fallback, - bool *found_object) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - _cleanup_set_free_free_ Set *s = NULL; - Iterator i; - char *path; - int r; - - assert(bus); - assert(m); - assert(n); - assert(found_object); - - /* Spec says, GetManagedObjects() is only implemented on the root of a - * sub-tree. Therefore, we require a registered object-manager on - * exactly the queried path, otherwise, we refuse to respond. */ - - if (require_fallback || !n->object_managers) - return 0; - - r = get_child_nodes(bus, m->path, n, CHILDREN_RECURSIVE, &s, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - - r = sd_bus_message_new_method_return(m, &reply); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}"); - if (r < 0) - return r; - - SET_FOREACH(path, s, i) { - r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error); - if (r < 0) - return r; - - if (bus->nodes_modified) - return 0; - } - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - r = sd_bus_send(bus, reply, NULL); - if (r < 0) - return r; - - return 1; -} - -static int object_find_and_run( - sd_bus *bus, - sd_bus_message *m, - const char *p, - bool require_fallback, - bool *found_object) { - - struct node *n; - struct vtable_member vtable_key, *v; - int r; - - assert(bus); - assert(m); - assert(p); - assert(found_object); - - n = hashmap_get(bus->nodes, p); - if (!n) - return 0; - - /* First, try object callbacks */ - r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object); - if (r != 0) - return r; - if (bus->nodes_modified) - return 0; - - if (!m->interface || !m->member) - return 0; - - /* Then, look for a known method */ - vtable_key.path = (char*) p; - vtable_key.interface = m->interface; - vtable_key.member = m->member; - - v = hashmap_get(bus->vtable_methods, &vtable_key); - if (v) { - r = method_callbacks_run(bus, m, v, require_fallback, found_object); - if (r != 0) - return r; - if (bus->nodes_modified) - return 0; - } - - /* Then, look for a known property */ - if (streq(m->interface, "org.freedesktop.DBus.Properties")) { - bool get = false; - - get = streq(m->member, "Get"); - - if (get || streq(m->member, "Set")) { - - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - vtable_key.path = (char*) p; - - r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member); - if (r < 0) - return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters"); - - v = hashmap_get(bus->vtable_properties, &vtable_key); - if (v) { - r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object); - if (r != 0) - return r; - } - - } else if (streq(m->member, "GetAll")) { - const char *iface; - - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - r = sd_bus_message_read(m, "s", &iface); - if (r < 0) - return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter"); - - if (iface[0] == 0) - iface = NULL; - - r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object); - if (r != 0) - return r; - } - - } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) { - - if (!isempty(sd_bus_message_get_signature(m, true))) - return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); - - r = process_introspect(bus, m, n, require_fallback, found_object); - if (r != 0) - return r; - - } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) { - - if (!isempty(sd_bus_message_get_signature(m, true))) - return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); - - r = process_get_managed_objects(bus, m, n, require_fallback, found_object); - if (r != 0) - return r; - } - - if (bus->nodes_modified) - return 0; - - if (!*found_object) { - r = bus_node_exists(bus, n, m->path, require_fallback); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - if (r > 0) - *found_object = true; - } - - return 0; -} - -int bus_process_object(sd_bus *bus, sd_bus_message *m) { - int r; - size_t pl; - bool found_object = false; - - assert(bus); - assert(m); - - if (bus->hello_flags & KDBUS_HELLO_MONITOR) - return 0; - - if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) - return 0; - - if (hashmap_isempty(bus->nodes)) - return 0; - - /* Never respond to broadcast messages */ - if (bus->bus_client && !m->destination) - return 0; - - assert(m->path); - assert(m->member); - - pl = strlen(m->path); - do { - char prefix[pl+1]; - - bus->nodes_modified = false; - - r = object_find_and_run(bus, m, m->path, false, &found_object); - if (r != 0) - return r; - - /* Look for fallback prefixes */ - OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) { - - if (bus->nodes_modified) - break; - - r = object_find_and_run(bus, m, prefix, true, &found_object); - if (r != 0) - return r; - } - - } while (bus->nodes_modified); - - if (!found_object) - return 0; - - if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") || - sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set")) - r = sd_bus_reply_method_errorf( - m, - SD_BUS_ERROR_UNKNOWN_PROPERTY, - "Unknown property or interface."); - else - r = sd_bus_reply_method_errorf( - m, - SD_BUS_ERROR_UNKNOWN_METHOD, - "Unknown method '%s' or interface '%s'.", m->member, m->interface); - - if (r < 0) - return r; - - return 1; -} - -static struct node *bus_node_allocate(sd_bus *bus, const char *path) { - struct node *n, *parent; - const char *e; - _cleanup_free_ char *s = NULL; - char *p; - int r; - - assert(bus); - assert(path); - assert(path[0] == '/'); - - n = hashmap_get(bus->nodes, path); - if (n) - return n; - - r = hashmap_ensure_allocated(&bus->nodes, &string_hash_ops); - if (r < 0) - return NULL; - - s = strdup(path); - if (!s) - return NULL; - - if (streq(path, "/")) - parent = NULL; - else { - e = strrchr(path, '/'); - assert(e); - - p = strndupa(path, MAX(1, e - path)); - - parent = bus_node_allocate(bus, p); - if (!parent) - return NULL; - } - - n = new0(struct node, 1); - if (!n) - return NULL; - - n->parent = parent; - n->path = s; - s = NULL; /* do not free */ - - r = hashmap_put(bus->nodes, n->path, n); - if (r < 0) { - free(n->path); - free(n); - return NULL; - } - - if (parent) - LIST_PREPEND(siblings, parent->child, n); - - return n; -} - -void bus_node_gc(sd_bus *b, struct node *n) { - assert(b); - - if (!n) - return; - - if (n->child || - n->callbacks || - n->vtables || - n->enumerators || - n->object_managers) - return; - - assert(hashmap_remove(b->nodes, n->path) == n); - - if (n->parent) - LIST_REMOVE(siblings, n->parent->child, n); - - free(n->path); - bus_node_gc(b, n->parent); - free(n); -} - -static int bus_find_parent_object_manager(sd_bus *bus, struct node **out, const char *path) { - struct node *n; - - assert(bus); - assert(path); - - n = hashmap_get(bus->nodes, path); - if (!n) { - char *prefix; - - prefix = alloca(strlen(path) + 1); - OBJECT_PATH_FOREACH_PREFIX(prefix, path) { - n = hashmap_get(bus->nodes, prefix); - if (n) - break; - } - } - - while (n && !n->object_managers) - n = n->parent; - - if (out) - *out = n; - return !!n; -} - -static int bus_add_object( - sd_bus *bus, - sd_bus_slot **slot, - bool fallback, - const char *path, - sd_bus_message_handler_t callback, - void *userdata) { - - sd_bus_slot *s; - struct node *n; - int r; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(callback, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - n = bus_node_allocate(bus, path); - if (!n) - return -ENOMEM; - - s = bus_slot_allocate(bus, !slot, BUS_NODE_CALLBACK, sizeof(struct node_callback), userdata); - if (!s) { - r = -ENOMEM; - goto fail; - } - - s->node_callback.callback = callback; - s->node_callback.is_fallback = fallback; - - s->node_callback.node = n; - LIST_PREPEND(callbacks, n->callbacks, &s->node_callback); - bus->nodes_modified = true; - - if (slot) - *slot = s; - - return 0; - -fail: - sd_bus_slot_unref(s); - bus_node_gc(bus, n); - - return r; -} - -_public_ int sd_bus_add_object( - sd_bus *bus, - sd_bus_slot **slot, - const char *path, - sd_bus_message_handler_t callback, - void *userdata) { - - return bus_add_object(bus, slot, false, path, callback, userdata); -} - -_public_ int sd_bus_add_fallback( - sd_bus *bus, - sd_bus_slot **slot, - const char *prefix, - sd_bus_message_handler_t callback, - void *userdata) { - - return bus_add_object(bus, slot, true, prefix, callback, userdata); -} - -static void vtable_member_hash_func(const void *a, struct siphash *state) { - const struct vtable_member *m = a; - - assert(m); - - string_hash_func(m->path, state); - string_hash_func(m->interface, state); - string_hash_func(m->member, state); -} - -static int vtable_member_compare_func(const void *a, const void *b) { - const struct vtable_member *x = a, *y = b; - int r; - - assert(x); - assert(y); - - r = strcmp(x->path, y->path); - if (r != 0) - return r; - - r = strcmp(x->interface, y->interface); - if (r != 0) - return r; - - return strcmp(x->member, y->member); -} - -static const struct hash_ops vtable_member_hash_ops = { - .hash = vtable_member_hash_func, - .compare = vtable_member_compare_func -}; - -static int add_object_vtable_internal( - sd_bus *bus, - sd_bus_slot **slot, - const char *path, - const char *interface, - const sd_bus_vtable *vtable, - bool fallback, - sd_bus_object_find_t find, - void *userdata) { - - sd_bus_slot *s = NULL; - struct node_vtable *i, *existing = NULL; - const sd_bus_vtable *v; - struct node *n; - int r; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(interface_name_is_valid(interface), -EINVAL); - assert_return(vtable, -EINVAL); - assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL); - assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - assert_return(!streq(interface, "org.freedesktop.DBus.Properties") && - !streq(interface, "org.freedesktop.DBus.Introspectable") && - !streq(interface, "org.freedesktop.DBus.Peer") && - !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL); - - r = hashmap_ensure_allocated(&bus->vtable_methods, &vtable_member_hash_ops); - if (r < 0) - return r; - - r = hashmap_ensure_allocated(&bus->vtable_properties, &vtable_member_hash_ops); - if (r < 0) - return r; - - n = bus_node_allocate(bus, path); - if (!n) - return -ENOMEM; - - LIST_FOREACH(vtables, i, n->vtables) { - if (i->is_fallback != fallback) { - r = -EPROTOTYPE; - goto fail; - } - - if (streq(i->interface, interface)) { - - if (i->vtable == vtable) { - r = -EEXIST; - goto fail; - } - - existing = i; - } - } - - s = bus_slot_allocate(bus, !slot, BUS_NODE_VTABLE, sizeof(struct node_vtable), userdata); - if (!s) { - r = -ENOMEM; - goto fail; - } - - s->node_vtable.is_fallback = fallback; - s->node_vtable.vtable = vtable; - s->node_vtable.find = find; - - s->node_vtable.interface = strdup(interface); - if (!s->node_vtable.interface) { - r = -ENOMEM; - goto fail; - } - - for (v = s->node_vtable.vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { - - switch (v->type) { - - case _SD_BUS_VTABLE_METHOD: { - struct vtable_member *m; - - if (!member_name_is_valid(v->x.method.member) || - !signature_is_valid(strempty(v->x.method.signature), false) || - !signature_is_valid(strempty(v->x.method.result), false) || - !(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) || - v->flags & (SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) { - r = -EINVAL; - goto fail; - } - - m = new0(struct vtable_member, 1); - if (!m) { - r = -ENOMEM; - goto fail; - } - - m->parent = &s->node_vtable; - m->path = n->path; - m->interface = s->node_vtable.interface; - m->member = v->x.method.member; - m->vtable = v; - - r = hashmap_put(bus->vtable_methods, m, m); - if (r < 0) { - free(m); - goto fail; - } - - break; - } - - case _SD_BUS_VTABLE_WRITABLE_PROPERTY: - - if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) { - r = -EINVAL; - goto fail; - } - - if (v->flags & SD_BUS_VTABLE_PROPERTY_CONST) { - r = -EINVAL; - goto fail; - } - - /* Fall through */ - - case _SD_BUS_VTABLE_PROPERTY: { - struct vtable_member *m; - - if (!member_name_is_valid(v->x.property.member) || - !signature_is_single(v->x.property.signature, false) || - !(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) || - (v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY) || - (!!(v->flags & SD_BUS_VTABLE_PROPERTY_CONST) + !!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) + !!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) > 1 || - ((v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) && (v->flags & SD_BUS_VTABLE_PROPERTY_EXPLICIT)) || - (v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) { - r = -EINVAL; - goto fail; - } - - m = new0(struct vtable_member, 1); - if (!m) { - r = -ENOMEM; - goto fail; - } - - m->parent = &s->node_vtable; - m->path = n->path; - m->interface = s->node_vtable.interface; - m->member = v->x.property.member; - m->vtable = v; - - r = hashmap_put(bus->vtable_properties, m, m); - if (r < 0) { - free(m); - goto fail; - } - - break; - } - - case _SD_BUS_VTABLE_SIGNAL: - - if (!member_name_is_valid(v->x.signal.member) || - !signature_is_valid(strempty(v->x.signal.signature), false) || - v->flags & SD_BUS_VTABLE_UNPRIVILEGED) { - r = -EINVAL; - goto fail; - } - - break; - - default: - r = -EINVAL; - goto fail; - } - } - - s->node_vtable.node = n; - LIST_INSERT_AFTER(vtables, n->vtables, existing, &s->node_vtable); - bus->nodes_modified = true; - - if (slot) - *slot = s; - - return 0; - -fail: - sd_bus_slot_unref(s); - bus_node_gc(bus, n); - - return r; -} - -_public_ int sd_bus_add_object_vtable( - sd_bus *bus, - sd_bus_slot **slot, - const char *path, - const char *interface, - const sd_bus_vtable *vtable, - void *userdata) { - - return add_object_vtable_internal(bus, slot, path, interface, vtable, false, NULL, userdata); -} - -_public_ int sd_bus_add_fallback_vtable( - sd_bus *bus, - sd_bus_slot **slot, - const char *prefix, - const char *interface, - const sd_bus_vtable *vtable, - sd_bus_object_find_t find, - void *userdata) { - - return add_object_vtable_internal(bus, slot, prefix, interface, vtable, true, find, userdata); -} - -_public_ int sd_bus_add_node_enumerator( - sd_bus *bus, - sd_bus_slot **slot, - const char *path, - sd_bus_node_enumerator_t callback, - void *userdata) { - - sd_bus_slot *s; - struct node *n; - int r; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(callback, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - n = bus_node_allocate(bus, path); - if (!n) - return -ENOMEM; - - s = bus_slot_allocate(bus, !slot, BUS_NODE_ENUMERATOR, sizeof(struct node_enumerator), userdata); - if (!s) { - r = -ENOMEM; - goto fail; - } - - s->node_enumerator.callback = callback; - - s->node_enumerator.node = n; - LIST_PREPEND(enumerators, n->enumerators, &s->node_enumerator); - bus->nodes_modified = true; - - if (slot) - *slot = s; - - return 0; - -fail: - sd_bus_slot_unref(s); - bus_node_gc(bus, n); - - return r; -} - -static int emit_properties_changed_on_interface( - sd_bus *bus, - const char *prefix, - const char *path, - const char *interface, - bool require_fallback, - bool *found_interface, - char **names) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - bool has_invalidating = false, has_changing = false; - struct vtable_member key = {}; - struct node_vtable *c; - struct node *n; - char **property; - void *u = NULL; - int r; - - assert(bus); - assert(prefix); - assert(path); - assert(interface); - assert(found_interface); - - n = hashmap_get(bus->nodes, prefix); - if (!n) - return 0; - - r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.Properties", "PropertiesChanged"); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "s", interface); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "{sv}"); - if (r < 0) - return r; - - key.path = prefix; - key.interface = interface; - - LIST_FOREACH(vtables, c, n->vtables) { - if (require_fallback && !c->is_fallback) - continue; - - if (!streq(c->interface, interface)) - continue; - - r = node_vtable_get_userdata(bus, path, c, &u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - if (r == 0) - continue; - - *found_interface = true; - - if (names) { - /* If the caller specified a list of - * properties we include exactly those in the - * PropertiesChanged message */ - - STRV_FOREACH(property, names) { - struct vtable_member *v; - - assert_return(member_name_is_valid(*property), -EINVAL); - - key.member = *property; - v = hashmap_get(bus->vtable_properties, &key); - if (!v) - return -ENOENT; - - /* If there are two vtables for the same - * interface, let's handle this property when - * we come to that vtable. */ - if (c != v->parent) - continue; - - assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE || - v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION, -EDOM); - - assert_return(!(v->vtable->flags & SD_BUS_VTABLE_HIDDEN), -EDOM); - - if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { - has_invalidating = true; - continue; - } - - has_changing = true; - - r = vtable_append_one_property(bus, m, m->path, c, v->vtable, u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - } else { - const sd_bus_vtable *v; - - /* If the caller specified no properties list - * we include all properties that are marked - * as changing in the message. */ - - for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { - if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) - continue; - - if (v->flags & SD_BUS_VTABLE_HIDDEN) - continue; - - if (v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { - has_invalidating = true; - continue; - } - - if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) - continue; - - has_changing = true; - - r = vtable_append_one_property(bus, m, m->path, c, v, u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - } - } - - if (!has_invalidating && !has_changing) - return 0; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "s"); - if (r < 0) - return r; - - if (has_invalidating) { - LIST_FOREACH(vtables, c, n->vtables) { - if (require_fallback && !c->is_fallback) - continue; - - if (!streq(c->interface, interface)) - continue; - - r = node_vtable_get_userdata(bus, path, c, &u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - if (r == 0) - continue; - - if (names) { - STRV_FOREACH(property, names) { - struct vtable_member *v; - - key.member = *property; - assert_se(v = hashmap_get(bus->vtable_properties, &key)); - assert(c == v->parent); - - if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) - continue; - - r = sd_bus_message_append(m, "s", *property); - if (r < 0) - return r; - } - } else { - const sd_bus_vtable *v; - - for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { - if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) - continue; - - if (v->flags & SD_BUS_VTABLE_HIDDEN) - continue; - - if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) - continue; - - r = sd_bus_message_append(m, "s", v->x.property.member); - if (r < 0) - return r; - } - } - } - } - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_send(bus, m, NULL); - if (r < 0) - return r; - - return 1; -} - -_public_ int sd_bus_emit_properties_changed_strv( - sd_bus *bus, - const char *path, - const char *interface, - char **names) { - - BUS_DONT_DESTROY(bus); - bool found_interface = false; - char *prefix; - int r; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(interface_name_is_valid(interface), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - /* A non-NULL but empty names list means nothing needs to be - generated. A NULL list OTOH indicates that all properties - that are set to EMITS_CHANGE or EMITS_INVALIDATION shall be - included in the PropertiesChanged message. */ - if (names && names[0] == NULL) - return 0; - - do { - bus->nodes_modified = false; - - r = emit_properties_changed_on_interface(bus, path, path, interface, false, &found_interface, names); - if (r != 0) - return r; - if (bus->nodes_modified) - continue; - - prefix = alloca(strlen(path) + 1); - OBJECT_PATH_FOREACH_PREFIX(prefix, path) { - r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, &found_interface, names); - if (r != 0) - return r; - if (bus->nodes_modified) - break; - } - - } while (bus->nodes_modified); - - return found_interface ? 0 : -ENOENT; -} - -_public_ int sd_bus_emit_properties_changed( - sd_bus *bus, - const char *path, - const char *interface, - const char *name, ...) { - - char **names; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(interface_name_is_valid(interface), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (!name) - return 0; - - names = strv_from_stdarg_alloca(name); - - return sd_bus_emit_properties_changed_strv(bus, path, interface, names); -} - -static int object_added_append_all_prefix( - sd_bus *bus, - sd_bus_message *m, - Set *s, - const char *prefix, - const char *path, - bool require_fallback) { - - const char *previous_interface = NULL; - struct node_vtable *c; - struct node *n; - int r; - - assert(bus); - assert(m); - assert(s); - assert(prefix); - assert(path); - - n = hashmap_get(bus->nodes, prefix); - if (!n) - return 0; - - LIST_FOREACH(vtables, c, n->vtables) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - void *u = NULL; - - if (require_fallback && !c->is_fallback) - continue; - - r = node_vtable_get_userdata(bus, path, c, &u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - if (r == 0) - continue; - - if (!streq_ptr(c->interface, previous_interface)) { - /* If a child-node already handled this interface, we - * skip it on any of its parents. The child vtables - * always fully override any conflicting vtables of - * any parent node. */ - if (set_get(s, c->interface)) - continue; - - r = set_put(s, c->interface); - if (r < 0) - return r; - - if (previous_interface) { - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - } - - r = sd_bus_message_open_container(m, 'e', "sa{sv}"); - if (r < 0) - return r; - r = sd_bus_message_append(m, "s", c->interface); - if (r < 0) - return r; - r = sd_bus_message_open_container(m, 'a', "{sv}"); - if (r < 0) - return r; - - previous_interface = c->interface; - } - - r = vtable_append_all_properties(bus, m, path, c, u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - - if (previous_interface) { - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - } - - return 0; -} - -static int object_added_append_all(sd_bus *bus, sd_bus_message *m, const char *path) { - _cleanup_set_free_ Set *s = NULL; - char *prefix; - int r; - - assert(bus); - assert(m); - assert(path); - - /* - * This appends all interfaces registered on path @path. We first add - * the builtin interfaces, which are always available and handled by - * sd-bus. Then, we add all interfaces registered on the exact node, - * followed by all fallback interfaces registered on any parent prefix. - * - * If an interface is registered multiple times on the same node with - * different vtables, we merge all the properties across all vtables. - * However, if a child node has the same interface registered as one of - * its parent nodes has as fallback, we make the child overwrite the - * parent instead of extending it. Therefore, we keep a "Set" of all - * handled interfaces during parent traversal, so we skip interfaces on - * a parent that were overwritten by a child. - */ - - s = set_new(&string_hash_ops); - if (!s) - return -ENOMEM; - - r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Peer", 0); - if (r < 0) - return r; - r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Introspectable", 0); - if (r < 0) - return r; - r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Properties", 0); - if (r < 0) - return r; - r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.ObjectManager", 0); - if (r < 0) - return r; - - r = object_added_append_all_prefix(bus, m, s, path, path, false); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - - prefix = alloca(strlen(path) + 1); - OBJECT_PATH_FOREACH_PREFIX(prefix, path) { - r = object_added_append_all_prefix(bus, m, s, prefix, path, true); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - - return 0; -} - -_public_ int sd_bus_emit_object_added(sd_bus *bus, const char *path) { - BUS_DONT_DESTROY(bus); - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - struct node *object_manager; - int r; - - /* - * This emits an InterfacesAdded signal on the given path, by iterating - * all registered vtables and fallback vtables on the path. All - * properties are queried and included in the signal. - * This call is equivalent to sd_bus_emit_interfaces_added() with an - * explicit list of registered interfaces. However, unlike - * interfaces_added(), this call can figure out the list of supported - * interfaces itself. Furthermore, it properly adds the builtin - * org.freedesktop.DBus.* interfaces. - */ - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - r = bus_find_parent_object_manager(bus, &object_manager, path); - if (r < 0) - return r; - if (r == 0) - return -ESRCH; - - do { - bus->nodes_modified = false; - m = sd_bus_message_unref(m); - - r = sd_bus_message_new_signal(bus, &m, object_manager->path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"); - if (r < 0) - return r; - - r = sd_bus_message_append_basic(m, 'o', path); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "{sa{sv}}"); - if (r < 0) - return r; - - r = object_added_append_all(bus, m, path); - if (r < 0) - return r; - - if (bus->nodes_modified) - continue; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - } while (bus->nodes_modified); - - return sd_bus_send(bus, m, NULL); -} - -static int object_removed_append_all_prefix( - sd_bus *bus, - sd_bus_message *m, - Set *s, - const char *prefix, - const char *path, - bool require_fallback) { - - const char *previous_interface = NULL; - struct node_vtable *c; - struct node *n; - int r; - - assert(bus); - assert(m); - assert(s); - assert(prefix); - assert(path); - - n = hashmap_get(bus->nodes, prefix); - if (!n) - return 0; - - LIST_FOREACH(vtables, c, n->vtables) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - void *u = NULL; - - if (require_fallback && !c->is_fallback) - continue; - if (streq_ptr(c->interface, previous_interface)) - continue; - - /* If a child-node already handled this interface, we - * skip it on any of its parents. The child vtables - * always fully override any conflicting vtables of - * any parent node. */ - if (set_get(s, c->interface)) - continue; - - r = node_vtable_get_userdata(bus, path, c, &u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - if (r == 0) - continue; - - r = set_put(s, c->interface); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "s", c->interface); - if (r < 0) - return r; - - previous_interface = c->interface; - } - - return 0; -} - -static int object_removed_append_all(sd_bus *bus, sd_bus_message *m, const char *path) { - _cleanup_set_free_ Set *s = NULL; - char *prefix; - int r; - - assert(bus); - assert(m); - assert(path); - - /* see sd_bus_emit_object_added() for details */ - - s = set_new(&string_hash_ops); - if (!s) - return -ENOMEM; - - r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Peer"); - if (r < 0) - return r; - r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Introspectable"); - if (r < 0) - return r; - r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.Properties"); - if (r < 0) - return r; - r = sd_bus_message_append(m, "s", "org.freedesktop.DBus.ObjectManager"); - if (r < 0) - return r; - - r = object_removed_append_all_prefix(bus, m, s, path, path, false); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - - prefix = alloca(strlen(path) + 1); - OBJECT_PATH_FOREACH_PREFIX(prefix, path) { - r = object_removed_append_all_prefix(bus, m, s, prefix, path, true); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - - return 0; -} - -_public_ int sd_bus_emit_object_removed(sd_bus *bus, const char *path) { - BUS_DONT_DESTROY(bus); - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - struct node *object_manager; - int r; - - /* - * This is like sd_bus_emit_object_added(), but emits an - * InterfacesRemoved signal on the given path. This only includes any - * registered interfaces but skips the properties. Note that this will - * call into the find() callbacks of any registered vtable. Therefore, - * you must call this function before destroying/unlinking your object. - * Otherwise, the list of interfaces will be incomplete. However, note - * that this will *NOT* call into any property callback. Therefore, the - * object might be in an "destructed" state, as long as we can find it. - */ - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - r = bus_find_parent_object_manager(bus, &object_manager, path); - if (r < 0) - return r; - if (r == 0) - return -ESRCH; - - do { - bus->nodes_modified = false; - m = sd_bus_message_unref(m); - - r = sd_bus_message_new_signal(bus, &m, object_manager->path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"); - if (r < 0) - return r; - - r = sd_bus_message_append_basic(m, 'o', path); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "s"); - if (r < 0) - return r; - - r = object_removed_append_all(bus, m, path); - if (r < 0) - return r; - - if (bus->nodes_modified) - continue; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - } while (bus->nodes_modified); - - return sd_bus_send(bus, m, NULL); -} - -static int interfaces_added_append_one_prefix( - sd_bus *bus, - sd_bus_message *m, - const char *prefix, - const char *path, - const char *interface, - bool require_fallback) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - bool found_interface = false; - struct node_vtable *c; - struct node *n; - void *u = NULL; - int r; - - assert(bus); - assert(m); - assert(prefix); - assert(path); - assert(interface); - - n = hashmap_get(bus->nodes, prefix); - if (!n) - return 0; - - LIST_FOREACH(vtables, c, n->vtables) { - if (require_fallback && !c->is_fallback) - continue; - - if (!streq(c->interface, interface)) - continue; - - r = node_vtable_get_userdata(bus, path, c, &u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - if (r == 0) - continue; - - if (!found_interface) { - r = sd_bus_message_append_basic(m, 's', interface); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "{sv}"); - if (r < 0) - return r; - - found_interface = true; - } - - r = vtable_append_all_properties(bus, m, path, c, u, &error); - if (r < 0) - return r; - if (bus->nodes_modified) - return 0; - } - - if (found_interface) { - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - } - - return found_interface; -} - -static int interfaces_added_append_one( - sd_bus *bus, - sd_bus_message *m, - const char *path, - const char *interface) { - - char *prefix; - int r; - - assert(bus); - assert(m); - assert(path); - assert(interface); - - r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false); - if (r != 0) - return r; - if (bus->nodes_modified) - return 0; - - prefix = alloca(strlen(path) + 1); - OBJECT_PATH_FOREACH_PREFIX(prefix, path) { - r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true); - if (r != 0) - return r; - if (bus->nodes_modified) - return 0; - } - - return -ENOENT; -} - -_public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) { - BUS_DONT_DESTROY(bus); - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - struct node *object_manager; - char **i; - int r; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (strv_isempty(interfaces)) - return 0; - - r = bus_find_parent_object_manager(bus, &object_manager, path); - if (r < 0) - return r; - if (r == 0) - return -ESRCH; - - do { - bus->nodes_modified = false; - m = sd_bus_message_unref(m); - - r = sd_bus_message_new_signal(bus, &m, object_manager->path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"); - if (r < 0) - return r; - - r = sd_bus_message_append_basic(m, 'o', path); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "{sa{sv}}"); - if (r < 0) - return r; - - STRV_FOREACH(i, interfaces) { - assert_return(interface_name_is_valid(*i), -EINVAL); - - r = sd_bus_message_open_container(m, 'e', "sa{sv}"); - if (r < 0) - return r; - - r = interfaces_added_append_one(bus, m, path, *i); - if (r < 0) - return r; - - if (bus->nodes_modified) - break; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - } - - if (bus->nodes_modified) - continue; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - } while (bus->nodes_modified); - - return sd_bus_send(bus, m, NULL); -} - -_public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) { - char **interfaces; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - interfaces = strv_from_stdarg_alloca(interface); - - return sd_bus_emit_interfaces_added_strv(bus, path, interfaces); -} - -_public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - struct node *object_manager; - int r; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (strv_isempty(interfaces)) - return 0; - - r = bus_find_parent_object_manager(bus, &object_manager, path); - if (r < 0) - return r; - if (r == 0) - return -ESRCH; - - r = sd_bus_message_new_signal(bus, &m, object_manager->path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"); - if (r < 0) - return r; - - r = sd_bus_message_append_basic(m, 'o', path); - if (r < 0) - return r; - - r = sd_bus_message_append_strv(m, interfaces); - if (r < 0) - return r; - - return sd_bus_send(bus, m, NULL); -} - -_public_ int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) { - char **interfaces; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - interfaces = strv_from_stdarg_alloca(interface); - - return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces); -} - -_public_ int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path) { - sd_bus_slot *s; - struct node *n; - int r; - - assert_return(bus, -EINVAL); - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - n = bus_node_allocate(bus, path); - if (!n) - return -ENOMEM; - - s = bus_slot_allocate(bus, !slot, BUS_NODE_OBJECT_MANAGER, sizeof(struct node_object_manager), NULL); - if (!s) { - r = -ENOMEM; - goto fail; - } - - s->node_object_manager.node = n; - LIST_PREPEND(object_managers, n->object_managers, &s->node_object_manager); - bus->nodes_modified = true; - - if (slot) - *slot = s; - - return 0; - -fail: - sd_bus_slot_unref(s); - bus_node_gc(bus, n); - - return r; -} diff --git a/src/libsystemd/sd-bus/bus-objects.h b/src/libsystemd/sd-bus/bus-objects.h deleted file mode 100644 index e0b8c534ed..0000000000 --- a/src/libsystemd/sd-bus/bus-objects.h +++ /dev/null @@ -1,25 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-internal.h" - -int bus_process_object(sd_bus *bus, sd_bus_message *m); -void bus_node_gc(sd_bus *b, struct node *n); diff --git a/src/libsystemd/sd-bus/bus-protocol.h b/src/libsystemd/sd-bus/bus-protocol.h deleted file mode 100644 index 9d180cb284..0000000000 --- a/src/libsystemd/sd-bus/bus-protocol.h +++ /dev/null @@ -1,180 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <endian.h> - -#include "macro.h" - -/* Packet header */ - -struct _packed_ bus_header { - /* The first four fields are identical for dbus1, and dbus2 */ - uint8_t endian; - uint8_t type; - uint8_t flags; - uint8_t version; - - union _packed_ { - /* dbus1: Used for SOCK_STREAM connections */ - struct _packed_ { - uint32_t body_size; - - /* Note that what the bus spec calls "serial" we'll call - "cookie" instead, because we don't want to imply that the - cookie was in any way monotonically increasing. */ - uint32_t serial; - uint32_t fields_size; - } dbus1; - - /* dbus2: Used for kdbus connections */ - struct _packed_ { - uint32_t _reserved; - uint64_t cookie; - } dbus2; - - /* Note that both header versions have the same size! */ - }; -}; - -/* Endianness */ - -enum { - _BUS_INVALID_ENDIAN = 0, - BUS_LITTLE_ENDIAN = 'l', - BUS_BIG_ENDIAN = 'B', -#if __BYTE_ORDER == __BIG_ENDIAN - BUS_NATIVE_ENDIAN = BUS_BIG_ENDIAN, - BUS_REVERSE_ENDIAN = BUS_LITTLE_ENDIAN -#else - BUS_NATIVE_ENDIAN = BUS_LITTLE_ENDIAN, - BUS_REVERSE_ENDIAN = BUS_BIG_ENDIAN -#endif -}; - -/* Flags */ - -enum { - BUS_MESSAGE_NO_REPLY_EXPECTED = 1, - BUS_MESSAGE_NO_AUTO_START = 2, - BUS_MESSAGE_ALLOW_INTERACTIVE_AUTHORIZATION = 4, -}; - -/* Header fields */ - -enum { - _BUS_MESSAGE_HEADER_INVALID = 0, - BUS_MESSAGE_HEADER_PATH, - BUS_MESSAGE_HEADER_INTERFACE, - BUS_MESSAGE_HEADER_MEMBER, - BUS_MESSAGE_HEADER_ERROR_NAME, - BUS_MESSAGE_HEADER_REPLY_SERIAL, - BUS_MESSAGE_HEADER_DESTINATION, - BUS_MESSAGE_HEADER_SENDER, - BUS_MESSAGE_HEADER_SIGNATURE, - BUS_MESSAGE_HEADER_UNIX_FDS, - _BUS_MESSAGE_HEADER_MAX -}; - -/* RequestName parameters */ - -enum { - BUS_NAME_ALLOW_REPLACEMENT = 1, - BUS_NAME_REPLACE_EXISTING = 2, - BUS_NAME_DO_NOT_QUEUE = 4 -}; - -/* RequestName returns */ -enum { - BUS_NAME_PRIMARY_OWNER = 1, - BUS_NAME_IN_QUEUE = 2, - BUS_NAME_EXISTS = 3, - BUS_NAME_ALREADY_OWNER = 4 -}; - -/* ReleaseName returns */ -enum { - BUS_NAME_RELEASED = 1, - BUS_NAME_NON_EXISTENT = 2, - BUS_NAME_NOT_OWNER = 3, -}; - -/* StartServiceByName returns */ -enum { - BUS_START_REPLY_SUCCESS = 1, - BUS_START_REPLY_ALREADY_RUNNING = 2, -}; - -#define BUS_INTROSPECT_DOCTYPE \ - "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n" \ - "\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n" - -#define BUS_INTROSPECT_INTERFACE_PEER \ - " <interface name=\"org.freedesktop.DBus.Peer\">\n" \ - " <method name=\"Ping\"/>\n" \ - " <method name=\"GetMachineId\">\n" \ - " <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n" \ - " </method>\n" \ - " </interface>\n" - -#define BUS_INTROSPECT_INTERFACE_INTROSPECTABLE \ - " <interface name=\"org.freedesktop.DBus.Introspectable\">\n" \ - " <method name=\"Introspect\">\n" \ - " <arg name=\"data\" type=\"s\" direction=\"out\"/>\n" \ - " </method>\n" \ - " </interface>\n" - -#define BUS_INTROSPECT_INTERFACE_PROPERTIES \ - " <interface name=\"org.freedesktop.DBus.Properties\">\n" \ - " <method name=\"Get\">\n" \ - " <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n" \ - " <arg name=\"property\" direction=\"in\" type=\"s\"/>\n" \ - " <arg name=\"value\" direction=\"out\" type=\"v\"/>\n" \ - " </method>\n" \ - " <method name=\"GetAll\">\n" \ - " <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n" \ - " <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n" \ - " </method>\n" \ - " <method name=\"Set\">\n" \ - " <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n" \ - " <arg name=\"property\" direction=\"in\" type=\"s\"/>\n" \ - " <arg name=\"value\" direction=\"in\" type=\"v\"/>\n" \ - " </method>\n" \ - " <signal name=\"PropertiesChanged\">\n" \ - " <arg type=\"s\" name=\"interface\"/>\n" \ - " <arg type=\"a{sv}\" name=\"changed_properties\"/>\n" \ - " <arg type=\"as\" name=\"invalidated_properties\"/>\n" \ - " </signal>\n" \ - " </interface>\n" - -#define BUS_INTROSPECT_INTERFACE_OBJECT_MANAGER \ - " <interface name=\"org.freedesktop.DBus.ObjectManager\">\n" \ - " <method name=\"GetManagedObjects\">\n" \ - " <arg type=\"a{oa{sa{sv}}}\" name=\"object_paths_interfaces_and_properties\" direction=\"out\"/>\n" \ - " </method>\n" \ - " <signal name=\"InterfacesAdded\">\n" \ - " <arg type=\"o\" name=\"object_path\"/>\n" \ - " <arg type=\"a{sa{sv}}\" name=\"interfaces_and_properties\"/>\n" \ - " </signal>\n" \ - " <signal name=\"InterfacesRemoved\">\n" \ - " <arg type=\"o\" name=\"object_path\"/>\n" \ - " <arg type=\"as\" name=\"interfaces\"/>\n" \ - " </signal>\n" \ - " </interface>\n" diff --git a/src/libsystemd/sd-bus/bus-signature.c b/src/libsystemd/sd-bus/bus-signature.c deleted file mode 100644 index 7bc243494a..0000000000 --- a/src/libsystemd/sd-bus/bus-signature.c +++ /dev/null @@ -1,158 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <util.h> - -#include "bus-signature.h" -#include "bus-type.h" - -static int signature_element_length_internal( - const char *s, - bool allow_dict_entry, - unsigned array_depth, - unsigned struct_depth, - size_t *l) { - - int r; - - if (!s) - return -EINVAL; - - assert(l); - - if (bus_type_is_basic(*s) || *s == SD_BUS_TYPE_VARIANT) { - *l = 1; - return 0; - } - - if (*s == SD_BUS_TYPE_ARRAY) { - size_t t; - - if (array_depth >= 32) - return -EINVAL; - - r = signature_element_length_internal(s + 1, true, array_depth+1, struct_depth, &t); - if (r < 0) - return r; - - *l = t + 1; - return 0; - } - - if (*s == SD_BUS_TYPE_STRUCT_BEGIN) { - const char *p = s + 1; - - if (struct_depth >= 32) - return -EINVAL; - - while (*p != SD_BUS_TYPE_STRUCT_END) { - size_t t; - - r = signature_element_length_internal(p, false, array_depth, struct_depth+1, &t); - if (r < 0) - return r; - - p += t; - } - - *l = p - s + 1; - return 0; - } - - if (*s == SD_BUS_TYPE_DICT_ENTRY_BEGIN && allow_dict_entry) { - const char *p = s + 1; - unsigned n = 0; - - if (struct_depth >= 32) - return -EINVAL; - - while (*p != SD_BUS_TYPE_DICT_ENTRY_END) { - size_t t; - - if (n == 0 && !bus_type_is_basic(*p)) - return -EINVAL; - - r = signature_element_length_internal(p, false, array_depth, struct_depth+1, &t); - if (r < 0) - return r; - - p += t; - n++; - } - - if (n != 2) - return -EINVAL; - - *l = p - s + 1; - return 0; - } - - return -EINVAL; -} - - -int signature_element_length(const char *s, size_t *l) { - return signature_element_length_internal(s, true, 0, 0, l); -} - -bool signature_is_single(const char *s, bool allow_dict_entry) { - int r; - size_t t; - - if (!s) - return false; - - r = signature_element_length_internal(s, allow_dict_entry, 0, 0, &t); - if (r < 0) - return false; - - return s[t] == 0; -} - -bool signature_is_pair(const char *s) { - - if (!s) - return false; - - if (!bus_type_is_basic(*s)) - return false; - - return signature_is_single(s + 1, false); -} - -bool signature_is_valid(const char *s, bool allow_dict_entry) { - const char *p; - int r; - - if (!s) - return false; - - p = s; - while (*p) { - size_t t; - - r = signature_element_length_internal(p, allow_dict_entry, 0, 0, &t); - if (r < 0) - return false; - - p += t; - } - - return p - s <= 255; -} diff --git a/src/libsystemd/sd-bus/bus-signature.h b/src/libsystemd/sd-bus/bus-signature.h deleted file mode 100644 index 1e0cd7f587..0000000000 --- a/src/libsystemd/sd-bus/bus-signature.h +++ /dev/null @@ -1,28 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> - -bool signature_is_single(const char *s, bool allow_dict_entry); -bool signature_is_pair(const char *s); -bool signature_is_valid(const char *s, bool allow_dict_entry); - -int signature_element_length(const char *s, size_t *l); diff --git a/src/libsystemd/sd-bus/bus-slot.c b/src/libsystemd/sd-bus/bus-slot.c deleted file mode 100644 index a8c74011bf..0000000000 --- a/src/libsystemd/sd-bus/bus-slot.c +++ /dev/null @@ -1,286 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-control.h" -#include "bus-objects.h" -#include "bus-slot.h" -#include "string-util.h" - -sd_bus_slot *bus_slot_allocate( - sd_bus *bus, - bool floating, - BusSlotType type, - size_t extra, - void *userdata) { - - sd_bus_slot *slot; - - assert(bus); - - slot = malloc0(offsetof(sd_bus_slot, reply_callback) + extra); - if (!slot) - return NULL; - - slot->n_ref = 1; - slot->type = type; - slot->bus = bus; - slot->floating = floating; - slot->userdata = userdata; - - if (!floating) - sd_bus_ref(bus); - - LIST_PREPEND(slots, bus->slots, slot); - - return slot; -} - -_public_ sd_bus_slot* sd_bus_slot_ref(sd_bus_slot *slot) { - - if (!slot) - return NULL; - - assert(slot->n_ref > 0); - - slot->n_ref++; - return slot; -} - -void bus_slot_disconnect(sd_bus_slot *slot) { - sd_bus *bus; - - assert(slot); - - if (!slot->bus) - return; - - switch (slot->type) { - - case BUS_REPLY_CALLBACK: - - if (slot->reply_callback.cookie != 0) - ordered_hashmap_remove(slot->bus->reply_callbacks, &slot->reply_callback.cookie); - - if (slot->reply_callback.timeout != 0) - prioq_remove(slot->bus->reply_callbacks_prioq, &slot->reply_callback, &slot->reply_callback.prioq_idx); - - break; - - case BUS_FILTER_CALLBACK: - slot->bus->filter_callbacks_modified = true; - LIST_REMOVE(callbacks, slot->bus->filter_callbacks, &slot->filter_callback); - break; - - case BUS_MATCH_CALLBACK: - - if (slot->match_added) - bus_remove_match_internal(slot->bus, slot->match_callback.match_string, slot->match_callback.cookie); - - slot->bus->match_callbacks_modified = true; - bus_match_remove(&slot->bus->match_callbacks, &slot->match_callback); - - free(slot->match_callback.match_string); - - break; - - case BUS_NODE_CALLBACK: - - if (slot->node_callback.node) { - LIST_REMOVE(callbacks, slot->node_callback.node->callbacks, &slot->node_callback); - slot->bus->nodes_modified = true; - - bus_node_gc(slot->bus, slot->node_callback.node); - } - - break; - - case BUS_NODE_ENUMERATOR: - - if (slot->node_enumerator.node) { - LIST_REMOVE(enumerators, slot->node_enumerator.node->enumerators, &slot->node_enumerator); - slot->bus->nodes_modified = true; - - bus_node_gc(slot->bus, slot->node_enumerator.node); - } - - break; - - case BUS_NODE_OBJECT_MANAGER: - - if (slot->node_object_manager.node) { - LIST_REMOVE(object_managers, slot->node_object_manager.node->object_managers, &slot->node_object_manager); - slot->bus->nodes_modified = true; - - bus_node_gc(slot->bus, slot->node_object_manager.node); - } - - break; - - case BUS_NODE_VTABLE: - - if (slot->node_vtable.node && slot->node_vtable.interface && slot->node_vtable.vtable) { - const sd_bus_vtable *v; - - for (v = slot->node_vtable.vtable; v->type != _SD_BUS_VTABLE_END; v++) { - struct vtable_member *x = NULL; - - switch (v->type) { - - case _SD_BUS_VTABLE_METHOD: { - struct vtable_member key; - - key.path = slot->node_vtable.node->path; - key.interface = slot->node_vtable.interface; - key.member = v->x.method.member; - - x = hashmap_remove(slot->bus->vtable_methods, &key); - break; - } - - case _SD_BUS_VTABLE_PROPERTY: - case _SD_BUS_VTABLE_WRITABLE_PROPERTY: { - struct vtable_member key; - - key.path = slot->node_vtable.node->path; - key.interface = slot->node_vtable.interface; - key.member = v->x.method.member; - - - x = hashmap_remove(slot->bus->vtable_properties, &key); - break; - }} - - free(x); - } - } - - free(slot->node_vtable.interface); - - if (slot->node_vtable.node) { - LIST_REMOVE(vtables, slot->node_vtable.node->vtables, &slot->node_vtable); - slot->bus->nodes_modified = true; - - bus_node_gc(slot->bus, slot->node_vtable.node); - } - - break; - - default: - assert_not_reached("Wut? Unknown slot type?"); - } - - bus = slot->bus; - - slot->type = _BUS_SLOT_INVALID; - slot->bus = NULL; - LIST_REMOVE(slots, bus->slots, slot); - - if (!slot->floating) - sd_bus_unref(bus); -} - -_public_ sd_bus_slot* sd_bus_slot_unref(sd_bus_slot *slot) { - - if (!slot) - return NULL; - - assert(slot->n_ref > 0); - - if (slot->n_ref > 1) { - slot->n_ref --; - return NULL; - } - - bus_slot_disconnect(slot); - free(slot->description); - free(slot); - - return NULL; -} - -_public_ sd_bus* sd_bus_slot_get_bus(sd_bus_slot *slot) { - assert_return(slot, NULL); - - return slot->bus; -} - -_public_ void *sd_bus_slot_get_userdata(sd_bus_slot *slot) { - assert_return(slot, NULL); - - return slot->userdata; -} - -_public_ void *sd_bus_slot_set_userdata(sd_bus_slot *slot, void *userdata) { - void *ret; - - assert_return(slot, NULL); - - ret = slot->userdata; - slot->userdata = userdata; - - return ret; -} - -_public_ sd_bus_message *sd_bus_slot_get_current_message(sd_bus_slot *slot) { - assert_return(slot, NULL); - assert_return(slot->type >= 0, NULL); - - if (slot->bus->current_slot != slot) - return NULL; - - return slot->bus->current_message; -} - -_public_ sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *slot) { - assert_return(slot, NULL); - assert_return(slot->type >= 0, NULL); - - if (slot->bus->current_slot != slot) - return NULL; - - return slot->bus->current_handler; -} - -_public_ void* sd_bus_slot_get_current_userdata(sd_bus_slot *slot) { - assert_return(slot, NULL); - assert_return(slot->type >= 0, NULL); - - if (slot->bus->current_slot != slot) - return NULL; - - return slot->bus->current_userdata; -} - -_public_ int sd_bus_slot_set_description(sd_bus_slot *slot, const char *description) { - assert_return(slot, -EINVAL); - - return free_and_strdup(&slot->description, description); -} - -_public_ int sd_bus_slot_get_description(sd_bus_slot *slot, const char **description) { - assert_return(slot, -EINVAL); - assert_return(description, -EINVAL); - assert_return(slot->description, -ENXIO); - - *description = slot->description; - return 0; -} diff --git a/src/libsystemd/sd-bus/bus-slot.h b/src/libsystemd/sd-bus/bus-slot.h deleted file mode 100644 index 3b8b94dc6b..0000000000 --- a/src/libsystemd/sd-bus/bus-slot.h +++ /dev/null @@ -1,28 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2014 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "bus-internal.h" - -sd_bus_slot *bus_slot_allocate(sd_bus *bus, bool floating, BusSlotType type, size_t extra, void *userdata); - -void bus_slot_disconnect(sd_bus_slot *slot); diff --git a/src/libsystemd/sd-bus/bus-socket.c b/src/libsystemd/sd-bus/bus-socket.c deleted file mode 100644 index a2fb391239..0000000000 --- a/src/libsystemd/sd-bus/bus-socket.c +++ /dev/null @@ -1,1064 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <endian.h> -#include <poll.h> -#include <stdlib.h> -#include <unistd.h> - -#include "sd-bus.h" -#include "sd-daemon.h" - -#include "alloc-util.h" -#include "bus-internal.h" -#include "bus-message.h" -#include "bus-socket.h" -#include "fd-util.h" -#include "formats-util.h" -#include "hexdecoct.h" -#include "macro.h" -#include "missing.h" -#include "selinux-util.h" -#include "signal-util.h" -#include "stdio-util.h" -#include "string-util.h" -#include "user-util.h" -#include "utf8.h" -#include "util.h" - -#define SNDBUF_SIZE (8*1024*1024) - -static void iovec_advance(struct iovec iov[], unsigned *idx, size_t size) { - - while (size > 0) { - struct iovec *i = iov + *idx; - - if (i->iov_len > size) { - i->iov_base = (uint8_t*) i->iov_base + size; - i->iov_len -= size; - return; - } - - size -= i->iov_len; - - i->iov_base = NULL; - i->iov_len = 0; - - (*idx) ++; - } -} - -static int append_iovec(sd_bus_message *m, const void *p, size_t sz) { - assert(m); - assert(p); - assert(sz > 0); - - m->iovec[m->n_iovec].iov_base = (void*) p; - m->iovec[m->n_iovec].iov_len = sz; - m->n_iovec++; - - return 0; -} - -static int bus_message_setup_iovec(sd_bus_message *m) { - struct bus_body_part *part; - unsigned n, i; - int r; - - assert(m); - assert(m->sealed); - - if (m->n_iovec > 0) - return 0; - - assert(!m->iovec); - - n = 1 + m->n_body_parts; - if (n < ELEMENTSOF(m->iovec_fixed)) - m->iovec = m->iovec_fixed; - else { - m->iovec = new(struct iovec, n); - if (!m->iovec) { - r = -ENOMEM; - goto fail; - } - } - - r = append_iovec(m, m->header, BUS_MESSAGE_BODY_BEGIN(m)); - if (r < 0) - goto fail; - - MESSAGE_FOREACH_PART(part, i, m) { - r = bus_body_part_map(part); - if (r < 0) - goto fail; - - r = append_iovec(m, part->data, part->size); - if (r < 0) - goto fail; - } - - assert(n == m->n_iovec); - - return 0; - -fail: - m->poisoned = true; - return r; -} - -bool bus_socket_auth_needs_write(sd_bus *b) { - - unsigned i; - - if (b->auth_index >= ELEMENTSOF(b->auth_iovec)) - return false; - - for (i = b->auth_index; i < ELEMENTSOF(b->auth_iovec); i++) { - struct iovec *j = b->auth_iovec + i; - - if (j->iov_len > 0) - return true; - } - - return false; -} - -static int bus_socket_write_auth(sd_bus *b) { - ssize_t k; - - assert(b); - assert(b->state == BUS_AUTHENTICATING); - - if (!bus_socket_auth_needs_write(b)) - return 0; - - if (b->prefer_writev) - k = writev(b->output_fd, b->auth_iovec + b->auth_index, ELEMENTSOF(b->auth_iovec) - b->auth_index); - else { - struct msghdr mh; - zero(mh); - - mh.msg_iov = b->auth_iovec + b->auth_index; - mh.msg_iovlen = ELEMENTSOF(b->auth_iovec) - b->auth_index; - - k = sendmsg(b->output_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL); - if (k < 0 && errno == ENOTSOCK) { - b->prefer_writev = true; - k = writev(b->output_fd, b->auth_iovec + b->auth_index, ELEMENTSOF(b->auth_iovec) - b->auth_index); - } - } - - if (k < 0) - return errno == EAGAIN ? 0 : -errno; - - iovec_advance(b->auth_iovec, &b->auth_index, (size_t) k); - return 1; -} - -static int bus_socket_auth_verify_client(sd_bus *b) { - char *e, *f, *start; - sd_id128_t peer; - unsigned i; - int r; - - assert(b); - - /* We expect two response lines: "OK" and possibly - * "AGREE_UNIX_FD" */ - - e = memmem_safe(b->rbuffer, b->rbuffer_size, "\r\n", 2); - if (!e) - return 0; - - if (b->hello_flags & KDBUS_HELLO_ACCEPT_FD) { - f = memmem(e + 2, b->rbuffer_size - (e - (char*) b->rbuffer) - 2, "\r\n", 2); - if (!f) - return 0; - - start = f + 2; - } else { - f = NULL; - start = e + 2; - } - - /* Nice! We got all the lines we need. First check the OK - * line */ - - if (e - (char*) b->rbuffer != 3 + 32) - return -EPERM; - - if (memcmp(b->rbuffer, "OK ", 3)) - return -EPERM; - - b->auth = b->anonymous_auth ? BUS_AUTH_ANONYMOUS : BUS_AUTH_EXTERNAL; - - for (i = 0; i < 32; i += 2) { - int x, y; - - x = unhexchar(((char*) b->rbuffer)[3 + i]); - y = unhexchar(((char*) b->rbuffer)[3 + i + 1]); - - if (x < 0 || y < 0) - return -EINVAL; - - peer.bytes[i/2] = ((uint8_t) x << 4 | (uint8_t) y); - } - - if (!sd_id128_equal(b->server_id, SD_ID128_NULL) && - !sd_id128_equal(b->server_id, peer)) - return -EPERM; - - b->server_id = peer; - - /* And possibly check the second line, too */ - - if (f) - b->can_fds = - (f - e == strlen("\r\nAGREE_UNIX_FD")) && - memcmp(e + 2, "AGREE_UNIX_FD", strlen("AGREE_UNIX_FD")) == 0; - - b->rbuffer_size -= (start - (char*) b->rbuffer); - memmove(b->rbuffer, start, b->rbuffer_size); - - r = bus_start_running(b); - if (r < 0) - return r; - - return 1; -} - -static bool line_equals(const char *s, size_t m, const char *line) { - size_t l; - - l = strlen(line); - if (l != m) - return false; - - return memcmp(s, line, l) == 0; -} - -static bool line_begins(const char *s, size_t m, const char *word) { - size_t l; - - l = strlen(word); - if (m < l) - return false; - - if (memcmp(s, word, l) != 0) - return false; - - return m == l || (m > l && s[l] == ' '); -} - -static int verify_anonymous_token(sd_bus *b, const char *p, size_t l) { - _cleanup_free_ char *token = NULL; - size_t len; - int r; - - if (!b->anonymous_auth) - return 0; - - if (l <= 0) - return 1; - - assert(p[0] == ' '); - p++; l--; - - if (l % 2 != 0) - return 0; - - r = unhexmem(p, l, (void **) &token, &len); - if (r < 0) - return 0; - - if (memchr(token, 0, len)) - return 0; - - return !!utf8_is_valid(token); -} - -static int verify_external_token(sd_bus *b, const char *p, size_t l) { - _cleanup_free_ char *token = NULL; - size_t len; - uid_t u; - int r; - - /* We don't do any real authentication here. Instead, we if - * the owner of this bus wanted authentication he should have - * checked SO_PEERCRED before even creating the bus object. */ - - if (!b->anonymous_auth && !b->ucred_valid) - return 0; - - if (l <= 0) - return 1; - - assert(p[0] == ' '); - p++; l--; - - if (l % 2 != 0) - return 0; - - r = unhexmem(p, l, (void**) &token, &len); - if (r < 0) - return 0; - - if (memchr(token, 0, len)) - return 0; - - r = parse_uid(token, &u); - if (r < 0) - return 0; - - /* We ignore the passed value if anonymous authentication is - * on anyway. */ - if (!b->anonymous_auth && u != b->ucred.uid) - return 0; - - return 1; -} - -static int bus_socket_auth_write(sd_bus *b, const char *t) { - char *p; - size_t l; - - assert(b); - assert(t); - - /* We only make use of the first iovec */ - assert(b->auth_index == 0 || b->auth_index == 1); - - l = strlen(t); - p = malloc(b->auth_iovec[0].iov_len + l); - if (!p) - return -ENOMEM; - - memcpy(p, b->auth_iovec[0].iov_base, b->auth_iovec[0].iov_len); - memcpy(p + b->auth_iovec[0].iov_len, t, l); - - b->auth_iovec[0].iov_base = p; - b->auth_iovec[0].iov_len += l; - - free(b->auth_buffer); - b->auth_buffer = p; - b->auth_index = 0; - return 0; -} - -static int bus_socket_auth_write_ok(sd_bus *b) { - char t[3 + 32 + 2 + 1]; - - assert(b); - - xsprintf(t, "OK " SD_ID128_FORMAT_STR "\r\n", SD_ID128_FORMAT_VAL(b->server_id)); - - return bus_socket_auth_write(b, t); -} - -static int bus_socket_auth_verify_server(sd_bus *b) { - char *e; - const char *line; - size_t l; - bool processed = false; - int r; - - assert(b); - - if (b->rbuffer_size < 1) - return 0; - - /* First char must be a NUL byte */ - if (*(char*) b->rbuffer != 0) - return -EIO; - - if (b->rbuffer_size < 3) - return 0; - - /* Begin with the first line */ - if (b->auth_rbegin <= 0) - b->auth_rbegin = 1; - - for (;;) { - /* Check if line is complete */ - line = (char*) b->rbuffer + b->auth_rbegin; - e = memmem(line, b->rbuffer_size - b->auth_rbegin, "\r\n", 2); - if (!e) - return processed; - - l = e - line; - - if (line_begins(line, l, "AUTH ANONYMOUS")) { - - r = verify_anonymous_token(b, line + 14, l - 14); - if (r < 0) - return r; - if (r == 0) - r = bus_socket_auth_write(b, "REJECTED\r\n"); - else { - b->auth = BUS_AUTH_ANONYMOUS; - r = bus_socket_auth_write_ok(b); - } - - } else if (line_begins(line, l, "AUTH EXTERNAL")) { - - r = verify_external_token(b, line + 13, l - 13); - if (r < 0) - return r; - if (r == 0) - r = bus_socket_auth_write(b, "REJECTED\r\n"); - else { - b->auth = BUS_AUTH_EXTERNAL; - r = bus_socket_auth_write_ok(b); - } - - } else if (line_begins(line, l, "AUTH")) - r = bus_socket_auth_write(b, "REJECTED EXTERNAL ANONYMOUS\r\n"); - else if (line_equals(line, l, "CANCEL") || - line_begins(line, l, "ERROR")) { - - b->auth = _BUS_AUTH_INVALID; - r = bus_socket_auth_write(b, "REJECTED\r\n"); - - } else if (line_equals(line, l, "BEGIN")) { - - if (b->auth == _BUS_AUTH_INVALID) - r = bus_socket_auth_write(b, "ERROR\r\n"); - else { - /* We can't leave from the auth phase - * before we haven't written - * everything queued, so let's check - * that */ - - if (bus_socket_auth_needs_write(b)) - return 1; - - b->rbuffer_size -= (e + 2 - (char*) b->rbuffer); - memmove(b->rbuffer, e + 2, b->rbuffer_size); - return bus_start_running(b); - } - - } else if (line_begins(line, l, "DATA")) { - - if (b->auth == _BUS_AUTH_INVALID) - r = bus_socket_auth_write(b, "ERROR\r\n"); - else { - if (b->auth == BUS_AUTH_ANONYMOUS) - r = verify_anonymous_token(b, line + 4, l - 4); - else - r = verify_external_token(b, line + 4, l - 4); - - if (r < 0) - return r; - if (r == 0) { - b->auth = _BUS_AUTH_INVALID; - r = bus_socket_auth_write(b, "REJECTED\r\n"); - } else - r = bus_socket_auth_write_ok(b); - } - } else if (line_equals(line, l, "NEGOTIATE_UNIX_FD")) { - if (b->auth == _BUS_AUTH_INVALID || !(b->hello_flags & KDBUS_HELLO_ACCEPT_FD)) - r = bus_socket_auth_write(b, "ERROR\r\n"); - else { - b->can_fds = true; - r = bus_socket_auth_write(b, "AGREE_UNIX_FD\r\n"); - } - } else - r = bus_socket_auth_write(b, "ERROR\r\n"); - - if (r < 0) - return r; - - b->auth_rbegin = e + 2 - (char*) b->rbuffer; - - processed = true; - } -} - -static int bus_socket_auth_verify(sd_bus *b) { - assert(b); - - if (b->is_server) - return bus_socket_auth_verify_server(b); - else - return bus_socket_auth_verify_client(b); -} - -static int bus_socket_read_auth(sd_bus *b) { - struct msghdr mh; - struct iovec iov = {}; - size_t n; - ssize_t k; - int r; - void *p; - union { - struct cmsghdr cmsghdr; - uint8_t buf[CMSG_SPACE(sizeof(int) * BUS_FDS_MAX)]; - } control; - bool handle_cmsg = false; - - assert(b); - assert(b->state == BUS_AUTHENTICATING); - - r = bus_socket_auth_verify(b); - if (r != 0) - return r; - - n = MAX(256u, b->rbuffer_size * 2); - - if (n > BUS_AUTH_SIZE_MAX) - n = BUS_AUTH_SIZE_MAX; - - if (b->rbuffer_size >= n) - return -ENOBUFS; - - p = realloc(b->rbuffer, n); - if (!p) - return -ENOMEM; - - b->rbuffer = p; - - iov.iov_base = (uint8_t*) b->rbuffer + b->rbuffer_size; - iov.iov_len = n - b->rbuffer_size; - - if (b->prefer_readv) - k = readv(b->input_fd, &iov, 1); - else { - zero(mh); - mh.msg_iov = &iov; - mh.msg_iovlen = 1; - mh.msg_control = &control; - mh.msg_controllen = sizeof(control); - - k = recvmsg(b->input_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_CMSG_CLOEXEC); - if (k < 0 && errno == ENOTSOCK) { - b->prefer_readv = true; - k = readv(b->input_fd, &iov, 1); - } else - handle_cmsg = true; - } - if (k < 0) - return errno == EAGAIN ? 0 : -errno; - if (k == 0) - return -ECONNRESET; - - b->rbuffer_size += k; - - if (handle_cmsg) { - struct cmsghdr *cmsg; - - CMSG_FOREACH(cmsg, &mh) - if (cmsg->cmsg_level == SOL_SOCKET && - cmsg->cmsg_type == SCM_RIGHTS) { - int j; - - /* Whut? We received fds during the auth - * protocol? Somebody is playing games with - * us. Close them all, and fail */ - j = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); - close_many((int*) CMSG_DATA(cmsg), j); - return -EIO; - } else - log_debug("Got unexpected auxiliary data with level=%d and type=%d", - cmsg->cmsg_level, cmsg->cmsg_type); - } - - r = bus_socket_auth_verify(b); - if (r != 0) - return r; - - return 1; -} - -void bus_socket_setup(sd_bus *b) { - assert(b); - - /* Increase the buffers to 8 MB */ - fd_inc_rcvbuf(b->input_fd, SNDBUF_SIZE); - fd_inc_sndbuf(b->output_fd, SNDBUF_SIZE); - - b->is_kernel = false; - b->message_version = 1; - b->message_endian = 0; -} - -static void bus_get_peercred(sd_bus *b) { - int r; - - assert(b); - - /* Get the peer for socketpair() sockets */ - b->ucred_valid = getpeercred(b->input_fd, &b->ucred) >= 0; - - /* Get the SELinux context of the peer */ - if (mac_selinux_have()) { - r = getpeersec(b->input_fd, &b->label); - if (r < 0 && r != -EOPNOTSUPP) - log_debug_errno(r, "Failed to determine peer security context: %m"); - } -} - -static int bus_socket_start_auth_client(sd_bus *b) { - size_t l; - const char *auth_suffix, *auth_prefix; - - assert(b); - - if (b->anonymous_auth) { - auth_prefix = "\0AUTH ANONYMOUS "; - - /* For ANONYMOUS auth we send some arbitrary "trace" string */ - l = 9; - b->auth_buffer = hexmem("anonymous", l); - } else { - char text[DECIMAL_STR_MAX(uid_t) + 1]; - - auth_prefix = "\0AUTH EXTERNAL "; - - xsprintf(text, UID_FMT, geteuid()); - - l = strlen(text); - b->auth_buffer = hexmem(text, l); - } - - if (!b->auth_buffer) - return -ENOMEM; - - if (b->hello_flags & KDBUS_HELLO_ACCEPT_FD) - auth_suffix = "\r\nNEGOTIATE_UNIX_FD\r\nBEGIN\r\n"; - else - auth_suffix = "\r\nBEGIN\r\n"; - - b->auth_iovec[0].iov_base = (void*) auth_prefix; - b->auth_iovec[0].iov_len = 1 + strlen(auth_prefix + 1); - b->auth_iovec[1].iov_base = (void*) b->auth_buffer; - b->auth_iovec[1].iov_len = l * 2; - b->auth_iovec[2].iov_base = (void*) auth_suffix; - b->auth_iovec[2].iov_len = strlen(auth_suffix); - - return bus_socket_write_auth(b); -} - -int bus_socket_start_auth(sd_bus *b) { - assert(b); - - bus_get_peercred(b); - - b->state = BUS_AUTHENTICATING; - b->auth_timeout = now(CLOCK_MONOTONIC) + BUS_DEFAULT_TIMEOUT; - - if (sd_is_socket(b->input_fd, AF_UNIX, 0, 0) <= 0) - b->hello_flags &= ~KDBUS_HELLO_ACCEPT_FD; - - if (b->output_fd != b->input_fd) - if (sd_is_socket(b->output_fd, AF_UNIX, 0, 0) <= 0) - b->hello_flags &= ~KDBUS_HELLO_ACCEPT_FD; - - if (b->is_server) - return bus_socket_read_auth(b); - else - return bus_socket_start_auth_client(b); -} - -int bus_socket_connect(sd_bus *b) { - int r; - - assert(b); - assert(b->input_fd < 0); - assert(b->output_fd < 0); - assert(b->sockaddr.sa.sa_family != AF_UNSPEC); - - b->input_fd = socket(b->sockaddr.sa.sa_family, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); - if (b->input_fd < 0) - return -errno; - - b->output_fd = b->input_fd; - - bus_socket_setup(b); - - r = connect(b->input_fd, &b->sockaddr.sa, b->sockaddr_size); - if (r < 0) { - if (errno == EINPROGRESS) - return 1; - - return -errno; - } - - return bus_socket_start_auth(b); -} - -int bus_socket_exec(sd_bus *b) { - int s[2], r; - pid_t pid; - - assert(b); - assert(b->input_fd < 0); - assert(b->output_fd < 0); - assert(b->exec_path); - - r = socketpair(AF_UNIX, SOCK_STREAM|SOCK_NONBLOCK|SOCK_CLOEXEC, 0, s); - if (r < 0) - return -errno; - - pid = fork(); - if (pid < 0) { - safe_close_pair(s); - return -errno; - } - if (pid == 0) { - /* Child */ - - (void) reset_all_signal_handlers(); - (void) reset_signal_mask(); - - close_all_fds(s+1, 1); - - assert_se(dup3(s[1], STDIN_FILENO, 0) == STDIN_FILENO); - assert_se(dup3(s[1], STDOUT_FILENO, 0) == STDOUT_FILENO); - - if (s[1] != STDIN_FILENO && s[1] != STDOUT_FILENO) - safe_close(s[1]); - - fd_cloexec(STDIN_FILENO, false); - fd_cloexec(STDOUT_FILENO, false); - fd_nonblock(STDIN_FILENO, false); - fd_nonblock(STDOUT_FILENO, false); - - if (b->exec_argv) - execvp(b->exec_path, b->exec_argv); - else { - const char *argv[] = { b->exec_path, NULL }; - execvp(b->exec_path, (char**) argv); - } - - _exit(EXIT_FAILURE); - } - - safe_close(s[1]); - b->output_fd = b->input_fd = s[0]; - - bus_socket_setup(b); - - return bus_socket_start_auth(b); -} - -int bus_socket_take_fd(sd_bus *b) { - assert(b); - - bus_socket_setup(b); - - return bus_socket_start_auth(b); -} - -int bus_socket_write_message(sd_bus *bus, sd_bus_message *m, size_t *idx) { - struct iovec *iov; - ssize_t k; - size_t n; - unsigned j; - int r; - - assert(bus); - assert(m); - assert(idx); - assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO); - - if (*idx >= BUS_MESSAGE_SIZE(m)) - return 0; - - r = bus_message_setup_iovec(m); - if (r < 0) - return r; - - n = m->n_iovec * sizeof(struct iovec); - iov = alloca(n); - memcpy(iov, m->iovec, n); - - j = 0; - iovec_advance(iov, &j, *idx); - - if (bus->prefer_writev) - k = writev(bus->output_fd, iov, m->n_iovec); - else { - struct msghdr mh = { - .msg_iov = iov, - .msg_iovlen = m->n_iovec, - }; - - if (m->n_fds > 0) { - struct cmsghdr *control; - - mh.msg_control = control = alloca(CMSG_SPACE(sizeof(int) * m->n_fds)); - mh.msg_controllen = control->cmsg_len = CMSG_LEN(sizeof(int) * m->n_fds); - control->cmsg_level = SOL_SOCKET; - control->cmsg_type = SCM_RIGHTS; - memcpy(CMSG_DATA(control), m->fds, sizeof(int) * m->n_fds); - } - - k = sendmsg(bus->output_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL); - if (k < 0 && errno == ENOTSOCK) { - bus->prefer_writev = true; - k = writev(bus->output_fd, iov, m->n_iovec); - } - } - - if (k < 0) - return errno == EAGAIN ? 0 : -errno; - - *idx += (size_t) k; - return 1; -} - -static int bus_socket_read_message_need(sd_bus *bus, size_t *need) { - uint32_t a, b; - uint8_t e; - uint64_t sum; - - assert(bus); - assert(need); - assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO); - - if (bus->rbuffer_size < sizeof(struct bus_header)) { - *need = sizeof(struct bus_header) + 8; - - /* Minimum message size: - * - * Header + - * - * Method Call: +2 string headers - * Signal: +3 string headers - * Method Error: +1 string headers - * +1 uint32 headers - * Method Reply: +1 uint32 headers - * - * A string header is at least 9 bytes - * A uint32 header is at least 8 bytes - * - * Hence the minimum message size of a valid message - * is header + 8 bytes */ - - return 0; - } - - a = ((const uint32_t*) bus->rbuffer)[1]; - b = ((const uint32_t*) bus->rbuffer)[3]; - - e = ((const uint8_t*) bus->rbuffer)[0]; - if (e == BUS_LITTLE_ENDIAN) { - a = le32toh(a); - b = le32toh(b); - } else if (e == BUS_BIG_ENDIAN) { - a = be32toh(a); - b = be32toh(b); - } else - return -EBADMSG; - - sum = (uint64_t) sizeof(struct bus_header) + (uint64_t) ALIGN_TO(b, 8) + (uint64_t) a; - if (sum >= BUS_MESSAGE_SIZE_MAX) - return -ENOBUFS; - - *need = (size_t) sum; - return 0; -} - -static int bus_socket_make_message(sd_bus *bus, size_t size) { - sd_bus_message *t; - void *b; - int r; - - assert(bus); - assert(bus->rbuffer_size >= size); - assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO); - - r = bus_rqueue_make_room(bus); - if (r < 0) - return r; - - if (bus->rbuffer_size > size) { - b = memdup((const uint8_t*) bus->rbuffer + size, - bus->rbuffer_size - size); - if (!b) - return -ENOMEM; - } else - b = NULL; - - r = bus_message_from_malloc(bus, - bus->rbuffer, size, - bus->fds, bus->n_fds, - NULL, - &t); - if (r < 0) { - free(b); - return r; - } - - bus->rbuffer = b; - bus->rbuffer_size -= size; - - bus->fds = NULL; - bus->n_fds = 0; - - bus->rqueue[bus->rqueue_size++] = t; - - return 1; -} - -int bus_socket_read_message(sd_bus *bus) { - struct msghdr mh; - struct iovec iov = {}; - ssize_t k; - size_t need; - int r; - void *b; - union { - struct cmsghdr cmsghdr; - uint8_t buf[CMSG_SPACE(sizeof(int) * BUS_FDS_MAX)]; - } control; - bool handle_cmsg = false; - - assert(bus); - assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO); - - r = bus_socket_read_message_need(bus, &need); - if (r < 0) - return r; - - if (bus->rbuffer_size >= need) - return bus_socket_make_message(bus, need); - - b = realloc(bus->rbuffer, need); - if (!b) - return -ENOMEM; - - bus->rbuffer = b; - - iov.iov_base = (uint8_t*) bus->rbuffer + bus->rbuffer_size; - iov.iov_len = need - bus->rbuffer_size; - - if (bus->prefer_readv) - k = readv(bus->input_fd, &iov, 1); - else { - zero(mh); - mh.msg_iov = &iov; - mh.msg_iovlen = 1; - mh.msg_control = &control; - mh.msg_controllen = sizeof(control); - - k = recvmsg(bus->input_fd, &mh, MSG_DONTWAIT|MSG_NOSIGNAL|MSG_CMSG_CLOEXEC); - if (k < 0 && errno == ENOTSOCK) { - bus->prefer_readv = true; - k = readv(bus->input_fd, &iov, 1); - } else - handle_cmsg = true; - } - if (k < 0) - return errno == EAGAIN ? 0 : -errno; - if (k == 0) - return -ECONNRESET; - - bus->rbuffer_size += k; - - if (handle_cmsg) { - struct cmsghdr *cmsg; - - CMSG_FOREACH(cmsg, &mh) - if (cmsg->cmsg_level == SOL_SOCKET && - cmsg->cmsg_type == SCM_RIGHTS) { - int n, *f; - - n = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); - - if (!bus->can_fds) { - /* Whut? We received fds but this - * isn't actually enabled? Close them, - * and fail */ - - close_many((int*) CMSG_DATA(cmsg), n); - return -EIO; - } - - f = realloc(bus->fds, sizeof(int) * (bus->n_fds + n)); - if (!f) { - close_many((int*) CMSG_DATA(cmsg), n); - return -ENOMEM; - } - - memcpy(f + bus->n_fds, CMSG_DATA(cmsg), n * sizeof(int)); - bus->fds = f; - bus->n_fds += n; - } else - log_debug("Got unexpected auxiliary data with level=%d and type=%d", - cmsg->cmsg_level, cmsg->cmsg_type); - } - - r = bus_socket_read_message_need(bus, &need); - if (r < 0) - return r; - - if (bus->rbuffer_size >= need) - return bus_socket_make_message(bus, need); - - return 1; -} - -int bus_socket_process_opening(sd_bus *b) { - int error = 0; - socklen_t slen = sizeof(error); - struct pollfd p = { - .fd = b->output_fd, - .events = POLLOUT, - }; - int r; - - assert(b->state == BUS_OPENING); - - r = poll(&p, 1, 0); - if (r < 0) - return -errno; - - if (!(p.revents & (POLLOUT|POLLERR|POLLHUP))) - return 0; - - r = getsockopt(b->output_fd, SOL_SOCKET, SO_ERROR, &error, &slen); - if (r < 0) - b->last_connect_error = errno; - else if (error != 0) - b->last_connect_error = error; - else if (p.revents & (POLLERR|POLLHUP)) - b->last_connect_error = ECONNREFUSED; - else - return bus_socket_start_auth(b); - - return bus_next_address(b); -} - -int bus_socket_process_authenticating(sd_bus *b) { - int r; - - assert(b); - assert(b->state == BUS_AUTHENTICATING); - - if (now(CLOCK_MONOTONIC) >= b->auth_timeout) - return -ETIMEDOUT; - - r = bus_socket_write_auth(b); - if (r != 0) - return r; - - return bus_socket_read_auth(b); -} diff --git a/src/libsystemd/sd-bus/bus-socket.h b/src/libsystemd/sd-bus/bus-socket.h deleted file mode 100644 index 684feead74..0000000000 --- a/src/libsystemd/sd-bus/bus-socket.h +++ /dev/null @@ -1,37 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -void bus_socket_setup(sd_bus *b); - -int bus_socket_connect(sd_bus *b); -int bus_socket_exec(sd_bus *b); -int bus_socket_take_fd(sd_bus *b); -int bus_socket_start_auth(sd_bus *b); - -int bus_socket_write_message(sd_bus *bus, sd_bus_message *m, size_t *idx); -int bus_socket_read_message(sd_bus *bus); - -int bus_socket_process_opening(sd_bus *b); -int bus_socket_process_authenticating(sd_bus *b); - -bool bus_socket_auth_needs_write(sd_bus *b); diff --git a/src/libsystemd/sd-bus/bus-track.c b/src/libsystemd/sd-bus/bus-track.c deleted file mode 100644 index bdbf7d4a85..0000000000 --- a/src/libsystemd/sd-bus/bus-track.c +++ /dev/null @@ -1,337 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-internal.h" -#include "bus-track.h" -#include "bus-util.h" - -struct sd_bus_track { - unsigned n_ref; - sd_bus *bus; - sd_bus_track_handler_t handler; - void *userdata; - Hashmap *names; - LIST_FIELDS(sd_bus_track, queue); - Iterator iterator; - bool in_queue; - bool modified; -}; - -#define MATCH_PREFIX \ - "type='signal'," \ - "sender='org.freedesktop.DBus'," \ - "path='/org/freedesktop/DBus'," \ - "interface='org.freedesktop.DBus'," \ - "member='NameOwnerChanged'," \ - "arg0='" - -#define MATCH_SUFFIX \ - "'" - -#define MATCH_FOR_NAME(name) \ - ({ \ - char *_x; \ - size_t _l = strlen(name); \ - _x = alloca(strlen(MATCH_PREFIX)+_l+strlen(MATCH_SUFFIX)+1); \ - strcpy(stpcpy(stpcpy(_x, MATCH_PREFIX), name), MATCH_SUFFIX); \ - _x; \ - }) - -static void bus_track_add_to_queue(sd_bus_track *track) { - assert(track); - - if (track->in_queue) - return; - - if (!track->handler) - return; - - LIST_PREPEND(queue, track->bus->track_queue, track); - track->in_queue = true; -} - -static void bus_track_remove_from_queue(sd_bus_track *track) { - assert(track); - - if (!track->in_queue) - return; - - LIST_REMOVE(queue, track->bus->track_queue, track); - track->in_queue = false; -} - -_public_ int sd_bus_track_new( - sd_bus *bus, - sd_bus_track **track, - sd_bus_track_handler_t handler, - void *userdata) { - - sd_bus_track *t; - - assert_return(bus, -EINVAL); - assert_return(track, -EINVAL); - - if (!bus->bus_client) - return -EINVAL; - - t = new0(sd_bus_track, 1); - if (!t) - return -ENOMEM; - - t->n_ref = 1; - t->handler = handler; - t->userdata = userdata; - t->bus = sd_bus_ref(bus); - - bus_track_add_to_queue(t); - - *track = t; - return 0; -} - -_public_ sd_bus_track* sd_bus_track_ref(sd_bus_track *track) { - - if (!track) - return NULL; - - assert(track->n_ref > 0); - - track->n_ref++; - - return track; -} - -_public_ sd_bus_track* sd_bus_track_unref(sd_bus_track *track) { - const char *n; - - if (!track) - return NULL; - - assert(track->n_ref > 0); - - if (track->n_ref > 1) { - track->n_ref --; - return NULL; - } - - while ((n = hashmap_first_key(track->names))) - sd_bus_track_remove_name(track, n); - - bus_track_remove_from_queue(track); - hashmap_free(track->names); - sd_bus_unref(track->bus); - free(track); - - return NULL; -} - -static int on_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) { - sd_bus_track *track = userdata; - const char *name, *old, *new; - int r; - - assert(message); - assert(track); - - r = sd_bus_message_read(message, "sss", &name, &old, &new); - if (r < 0) - return 0; - - sd_bus_track_remove_name(track, name); - return 0; -} - -_public_ int sd_bus_track_add_name(sd_bus_track *track, const char *name) { - _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *slot = NULL; - _cleanup_free_ char *n = NULL; - const char *match; - int r; - - assert_return(track, -EINVAL); - assert_return(service_name_is_valid(name), -EINVAL); - - r = hashmap_ensure_allocated(&track->names, &string_hash_ops); - if (r < 0) - return r; - - n = strdup(name); - if (!n) - return -ENOMEM; - - /* First, subscribe to this name */ - match = MATCH_FOR_NAME(n); - r = sd_bus_add_match(track->bus, &slot, match, on_name_owner_changed, track); - if (r < 0) - return r; - - r = hashmap_put(track->names, n, slot); - if (r == -EEXIST) - return 0; - if (r < 0) - return r; - - /* Second, check if it is currently existing, or maybe - * doesn't, or maybe disappeared already. */ - r = sd_bus_get_name_creds(track->bus, n, 0, NULL); - if (r < 0) { - hashmap_remove(track->names, n); - return r; - } - - n = NULL; - slot = NULL; - - bus_track_remove_from_queue(track); - track->modified = true; - - return 1; -} - -_public_ int sd_bus_track_remove_name(sd_bus_track *track, const char *name) { - _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *slot = NULL; - _cleanup_free_ char *n = NULL; - - assert_return(name, -EINVAL); - - if (!track) - return 0; - - slot = hashmap_remove2(track->names, (char*) name, (void**) &n); - if (!slot) - return 0; - - if (hashmap_isempty(track->names)) - bus_track_add_to_queue(track); - - track->modified = true; - - return 1; -} - -_public_ unsigned sd_bus_track_count(sd_bus_track *track) { - if (!track) - return 0; - - return hashmap_size(track->names); -} - -_public_ const char* sd_bus_track_contains(sd_bus_track *track, const char *name) { - assert_return(track, NULL); - assert_return(name, NULL); - - return hashmap_get(track->names, (void*) name) ? name : NULL; -} - -_public_ const char* sd_bus_track_first(sd_bus_track *track) { - const char *n = NULL; - - if (!track) - return NULL; - - track->modified = false; - track->iterator = ITERATOR_FIRST; - - hashmap_iterate(track->names, &track->iterator, NULL, (const void**) &n); - return n; -} - -_public_ const char* sd_bus_track_next(sd_bus_track *track) { - const char *n = NULL; - - if (!track) - return NULL; - - if (track->modified) - return NULL; - - hashmap_iterate(track->names, &track->iterator, NULL, (const void**) &n); - return n; -} - -_public_ int sd_bus_track_add_sender(sd_bus_track *track, sd_bus_message *m) { - const char *sender; - - assert_return(track, -EINVAL); - assert_return(m, -EINVAL); - - sender = sd_bus_message_get_sender(m); - if (!sender) - return -EINVAL; - - return sd_bus_track_add_name(track, sender); -} - -_public_ int sd_bus_track_remove_sender(sd_bus_track *track, sd_bus_message *m) { - const char *sender; - - assert_return(track, -EINVAL); - assert_return(m, -EINVAL); - - sender = sd_bus_message_get_sender(m); - if (!sender) - return -EINVAL; - - return sd_bus_track_remove_name(track, sender); -} - -_public_ sd_bus* sd_bus_track_get_bus(sd_bus_track *track) { - assert_return(track, NULL); - - return track->bus; -} - -void bus_track_dispatch(sd_bus_track *track) { - int r; - - assert(track); - assert(track->in_queue); - assert(track->handler); - - bus_track_remove_from_queue(track); - - sd_bus_track_ref(track); - - r = track->handler(track, track->userdata); - if (r < 0) - log_debug_errno(r, "Failed to process track handler: %m"); - else if (r == 0) - bus_track_add_to_queue(track); - - sd_bus_track_unref(track); -} - -_public_ void *sd_bus_track_get_userdata(sd_bus_track *track) { - assert_return(track, NULL); - - return track->userdata; -} - -_public_ void *sd_bus_track_set_userdata(sd_bus_track *track, void *userdata) { - void *ret; - - assert_return(track, NULL); - - ret = track->userdata; - track->userdata = userdata; - - return ret; -} diff --git a/src/libsystemd/sd-bus/bus-track.h b/src/libsystemd/sd-bus/bus-track.h deleted file mode 100644 index 7d93a727d6..0000000000 --- a/src/libsystemd/sd-bus/bus-track.h +++ /dev/null @@ -1,22 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -void bus_track_dispatch(sd_bus_track *track); diff --git a/src/libsystemd/sd-bus/bus-type.c b/src/libsystemd/sd-bus/bus-type.c deleted file mode 100644 index c692afc580..0000000000 --- a/src/libsystemd/sd-bus/bus-type.c +++ /dev/null @@ -1,176 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-type.h" - -bool bus_type_is_valid(char c) { - static const char valid[] = { - SD_BUS_TYPE_BYTE, - SD_BUS_TYPE_BOOLEAN, - SD_BUS_TYPE_INT16, - SD_BUS_TYPE_UINT16, - SD_BUS_TYPE_INT32, - SD_BUS_TYPE_UINT32, - SD_BUS_TYPE_INT64, - SD_BUS_TYPE_UINT64, - SD_BUS_TYPE_DOUBLE, - SD_BUS_TYPE_STRING, - SD_BUS_TYPE_OBJECT_PATH, - SD_BUS_TYPE_SIGNATURE, - SD_BUS_TYPE_ARRAY, - SD_BUS_TYPE_VARIANT, - SD_BUS_TYPE_STRUCT, - SD_BUS_TYPE_DICT_ENTRY, - SD_BUS_TYPE_UNIX_FD - }; - - return !!memchr(valid, c, sizeof(valid)); -} - -bool bus_type_is_valid_in_signature(char c) { - static const char valid[] = { - SD_BUS_TYPE_BYTE, - SD_BUS_TYPE_BOOLEAN, - SD_BUS_TYPE_INT16, - SD_BUS_TYPE_UINT16, - SD_BUS_TYPE_INT32, - SD_BUS_TYPE_UINT32, - SD_BUS_TYPE_INT64, - SD_BUS_TYPE_UINT64, - SD_BUS_TYPE_DOUBLE, - SD_BUS_TYPE_STRING, - SD_BUS_TYPE_OBJECT_PATH, - SD_BUS_TYPE_SIGNATURE, - SD_BUS_TYPE_ARRAY, - SD_BUS_TYPE_VARIANT, - SD_BUS_TYPE_STRUCT_BEGIN, - SD_BUS_TYPE_STRUCT_END, - SD_BUS_TYPE_DICT_ENTRY_BEGIN, - SD_BUS_TYPE_DICT_ENTRY_END, - SD_BUS_TYPE_UNIX_FD - }; - - return !!memchr(valid, c, sizeof(valid)); -} - -bool bus_type_is_basic(char c) { - static const char valid[] = { - SD_BUS_TYPE_BYTE, - SD_BUS_TYPE_BOOLEAN, - SD_BUS_TYPE_INT16, - SD_BUS_TYPE_UINT16, - SD_BUS_TYPE_INT32, - SD_BUS_TYPE_UINT32, - SD_BUS_TYPE_INT64, - SD_BUS_TYPE_UINT64, - SD_BUS_TYPE_DOUBLE, - SD_BUS_TYPE_STRING, - SD_BUS_TYPE_OBJECT_PATH, - SD_BUS_TYPE_SIGNATURE, - SD_BUS_TYPE_UNIX_FD - }; - - return !!memchr(valid, c, sizeof(valid)); -} - -bool bus_type_is_trivial(char c) { - static const char valid[] = { - SD_BUS_TYPE_BYTE, - SD_BUS_TYPE_BOOLEAN, - SD_BUS_TYPE_INT16, - SD_BUS_TYPE_UINT16, - SD_BUS_TYPE_INT32, - SD_BUS_TYPE_UINT32, - SD_BUS_TYPE_INT64, - SD_BUS_TYPE_UINT64, - SD_BUS_TYPE_DOUBLE - }; - - return !!memchr(valid, c, sizeof(valid)); -} - -bool bus_type_is_container(char c) { - static const char valid[] = { - SD_BUS_TYPE_ARRAY, - SD_BUS_TYPE_VARIANT, - SD_BUS_TYPE_STRUCT, - SD_BUS_TYPE_DICT_ENTRY - }; - - return !!memchr(valid, c, sizeof(valid)); -} - -int bus_type_get_alignment(char c) { - - switch (c) { - case SD_BUS_TYPE_BYTE: - case SD_BUS_TYPE_SIGNATURE: - case SD_BUS_TYPE_VARIANT: - return 1; - - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - return 2; - - case SD_BUS_TYPE_BOOLEAN: - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_ARRAY: - case SD_BUS_TYPE_UNIX_FD: - return 4; - - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - case SD_BUS_TYPE_STRUCT: - case SD_BUS_TYPE_STRUCT_BEGIN: - case SD_BUS_TYPE_DICT_ENTRY: - case SD_BUS_TYPE_DICT_ENTRY_BEGIN: - return 8; - } - - return -EINVAL; -} - -int bus_type_get_size(char c) { - - switch (c) { - case SD_BUS_TYPE_BYTE: - return 1; - - case SD_BUS_TYPE_INT16: - case SD_BUS_TYPE_UINT16: - return 2; - - case SD_BUS_TYPE_BOOLEAN: - case SD_BUS_TYPE_INT32: - case SD_BUS_TYPE_UINT32: - case SD_BUS_TYPE_UNIX_FD: - return 4; - - case SD_BUS_TYPE_INT64: - case SD_BUS_TYPE_UINT64: - case SD_BUS_TYPE_DOUBLE: - return 8; - } - - return -EINVAL; -} diff --git a/src/libsystemd/sd-bus/bus-type.h b/src/libsystemd/sd-bus/bus-type.h deleted file mode 100644 index 5c87eb5f08..0000000000 --- a/src/libsystemd/sd-bus/bus-type.h +++ /dev/null @@ -1,37 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> - -#include "sd-bus.h" - -#include "macro.h" - -bool bus_type_is_valid(char c) _const_; -bool bus_type_is_valid_in_signature(char c) _const_; -bool bus_type_is_basic(char c) _const_; -/* "trivial" is systemd's term for what the D-Bus Specification calls - * a "fixed type": that is, a basic type of fixed length */ -bool bus_type_is_trivial(char c) _const_; -bool bus_type_is_container(char c) _const_; - -int bus_type_get_alignment(char c) _const_; -int bus_type_get_size(char c) _const_; diff --git a/src/libsystemd/sd-bus/busctl-introspect.c b/src/libsystemd/sd-bus/busctl-introspect.c deleted file mode 100644 index b09509f8e1..0000000000 --- a/src/libsystemd/sd-bus/busctl-introspect.c +++ /dev/null @@ -1,790 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2014 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "busctl-introspect.h" -#include "string-util.h" -#include "util.h" -#include "xml.h" - -#define NODE_DEPTH_MAX 16 - -typedef struct Context { - const XMLIntrospectOps *ops; - void *userdata; - - char *interface_name; - uint64_t interface_flags; - - char *member_name; - char *member_signature; - char *member_result; - uint64_t member_flags; - bool member_writable; - - const char *current; - void *xml_state; -} Context; - -static void context_reset_member(Context *c) { - free(c->member_name); - free(c->member_signature); - free(c->member_result); - - c->member_name = c->member_signature = c->member_result = NULL; - c->member_flags = 0; - c->member_writable = false; -} - -static void context_reset_interface(Context *c) { - c->interface_name = mfree(c->interface_name); - c->interface_flags = 0; - - context_reset_member(c); -} - -static int parse_xml_annotation(Context *context, uint64_t *flags) { - - enum { - STATE_ANNOTATION, - STATE_NAME, - STATE_VALUE - } state = STATE_ANNOTATION; - - _cleanup_free_ char *field = NULL, *value = NULL; - - assert(context); - - for (;;) { - _cleanup_free_ char *name = NULL; - - int t; - - t = xml_tokenize(&context->current, &name, &context->xml_state, NULL); - if (t < 0) { - log_error("XML parse error."); - return t; - } - - if (t == XML_END) { - log_error("Premature end of XML data."); - return -EBADMSG; - } - - switch (state) { - - case STATE_ANNOTATION: - - if (t == XML_ATTRIBUTE_NAME) { - - if (streq_ptr(name, "name")) - state = STATE_NAME; - - else if (streq_ptr(name, "value")) - state = STATE_VALUE; - - else { - log_error("Unexpected <annotation> attribute %s.", name); - return -EBADMSG; - } - - } else if (t == XML_TAG_CLOSE_EMPTY || - (t == XML_TAG_CLOSE && streq_ptr(name, "annotation"))) { - - if (flags) { - if (streq_ptr(field, "org.freedesktop.DBus.Deprecated")) { - - if (streq_ptr(value, "true")) - *flags |= SD_BUS_VTABLE_DEPRECATED; - - } else if (streq_ptr(field, "org.freedesktop.DBus.Method.NoReply")) { - - if (streq_ptr(value, "true")) - *flags |= SD_BUS_VTABLE_METHOD_NO_REPLY; - - } else if (streq_ptr(field, "org.freedesktop.DBus.Property.EmitsChangedSignal")) { - - if (streq_ptr(value, "const")) - *flags = (*flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) | SD_BUS_VTABLE_PROPERTY_CONST; - else if (streq_ptr(value, "invalidates")) - *flags = (*flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_CONST)) | SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION; - else if (streq_ptr(value, "false")) - *flags = *flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION); - } - } - - return 0; - - } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token in <annotation>. (1)"); - return -EINVAL; - } - - break; - - case STATE_NAME: - - if (t == XML_ATTRIBUTE_VALUE) { - free(field); - field = name; - name = NULL; - - state = STATE_ANNOTATION; - } else { - log_error("Unexpected token in <annotation>. (2)"); - return -EINVAL; - } - - break; - - case STATE_VALUE: - - if (t == XML_ATTRIBUTE_VALUE) { - free(value); - value = name; - name = NULL; - - state = STATE_ANNOTATION; - } else { - log_error("Unexpected token in <annotation>. (3)"); - return -EINVAL; - } - - break; - - default: - assert_not_reached("Bad state"); - } - } -} - -static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth) { - - enum { - STATE_NODE, - STATE_NODE_NAME, - STATE_INTERFACE, - STATE_INTERFACE_NAME, - STATE_METHOD, - STATE_METHOD_NAME, - STATE_METHOD_ARG, - STATE_METHOD_ARG_NAME, - STATE_METHOD_ARG_TYPE, - STATE_METHOD_ARG_DIRECTION, - STATE_SIGNAL, - STATE_SIGNAL_NAME, - STATE_SIGNAL_ARG, - STATE_SIGNAL_ARG_NAME, - STATE_SIGNAL_ARG_TYPE, - STATE_PROPERTY, - STATE_PROPERTY_NAME, - STATE_PROPERTY_TYPE, - STATE_PROPERTY_ACCESS, - } state = STATE_NODE; - - _cleanup_free_ char *node_path = NULL, *argument_type = NULL, *argument_direction = NULL; - const char *np = prefix; - int r; - - assert(context); - assert(prefix); - - if (n_depth > NODE_DEPTH_MAX) { - log_error("<node> depth too high."); - return -EINVAL; - } - - for (;;) { - _cleanup_free_ char *name = NULL; - int t; - - t = xml_tokenize(&context->current, &name, &context->xml_state, NULL); - if (t < 0) { - log_error("XML parse error."); - return t; - } - - if (t == XML_END) { - log_error("Premature end of XML data."); - return -EBADMSG; - } - - switch (state) { - - case STATE_NODE: - if (t == XML_ATTRIBUTE_NAME) { - - if (streq_ptr(name, "name")) - state = STATE_NODE_NAME; - else { - log_error("Unexpected <node> attribute %s.", name); - return -EBADMSG; - } - - } else if (t == XML_TAG_OPEN) { - - if (streq_ptr(name, "interface")) - state = STATE_INTERFACE; - else if (streq_ptr(name, "node")) { - - r = parse_xml_node(context, np, n_depth+1); - if (r < 0) - return r; - } else { - log_error("Unexpected <node> tag %s.", name); - return -EBADMSG; - } - - } else if (t == XML_TAG_CLOSE_EMPTY || - (t == XML_TAG_CLOSE && streq_ptr(name, "node"))) { - - if (context->ops->on_path) { - r = context->ops->on_path(node_path ? node_path : np, context->userdata); - if (r < 0) - return r; - } - - return 0; - - } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token in <node>. (1)"); - return -EINVAL; - } - - break; - - case STATE_NODE_NAME: - - if (t == XML_ATTRIBUTE_VALUE) { - - free(node_path); - - if (name[0] == '/') { - node_path = name; - name = NULL; - } else { - - if (endswith(prefix, "/")) - node_path = strappend(prefix, name); - else - node_path = strjoin(prefix, "/", name, NULL); - if (!node_path) - return log_oom(); - } - - np = node_path; - state = STATE_NODE; - } else { - log_error("Unexpected token in <node>. (2)"); - return -EINVAL; - } - - break; - - case STATE_INTERFACE: - - if (t == XML_ATTRIBUTE_NAME) { - if (streq_ptr(name, "name")) - state = STATE_INTERFACE_NAME; - else { - log_error("Unexpected <interface> attribute %s.", name); - return -EBADMSG; - } - - } else if (t == XML_TAG_OPEN) { - if (streq_ptr(name, "method")) - state = STATE_METHOD; - else if (streq_ptr(name, "signal")) - state = STATE_SIGNAL; - else if (streq_ptr(name, "property")) { - context->member_flags |= SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE; - state = STATE_PROPERTY; - } else if (streq_ptr(name, "annotation")) { - r = parse_xml_annotation(context, &context->interface_flags); - if (r < 0) - return r; - } else { - log_error("Unexpected <interface> tag %s.", name); - return -EINVAL; - } - } else if (t == XML_TAG_CLOSE_EMPTY || - (t == XML_TAG_CLOSE && streq_ptr(name, "interface"))) { - - if (n_depth == 0) { - if (context->ops->on_interface) { - r = context->ops->on_interface(context->interface_name, context->interface_flags, context->userdata); - if (r < 0) - return r; - } - - context_reset_interface(context); - } - - state = STATE_NODE; - - } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token in <interface>. (1)"); - return -EINVAL; - } - - break; - - case STATE_INTERFACE_NAME: - - if (t == XML_ATTRIBUTE_VALUE) { - if (n_depth == 0) { - free(context->interface_name); - context->interface_name = name; - name = NULL; - } - - state = STATE_INTERFACE; - } else { - log_error("Unexpected token in <interface>. (2)"); - return -EINVAL; - } - - break; - - case STATE_METHOD: - - if (t == XML_ATTRIBUTE_NAME) { - if (streq_ptr(name, "name")) - state = STATE_METHOD_NAME; - else { - log_error("Unexpected <method> attribute %s", name); - return -EBADMSG; - } - } else if (t == XML_TAG_OPEN) { - if (streq_ptr(name, "arg")) - state = STATE_METHOD_ARG; - else if (streq_ptr(name, "annotation")) { - r = parse_xml_annotation(context, &context->member_flags); - if (r < 0) - return r; - } else { - log_error("Unexpected <method> tag %s.", name); - return -EINVAL; - } - } else if (t == XML_TAG_CLOSE_EMPTY || - (t == XML_TAG_CLOSE && streq_ptr(name, "method"))) { - - if (n_depth == 0) { - if (context->ops->on_method) { - r = context->ops->on_method(context->interface_name, context->member_name, context->member_signature, context->member_result, context->member_flags, context->userdata); - if (r < 0) - return r; - } - - context_reset_member(context); - } - - state = STATE_INTERFACE; - - } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token in <method> (1)."); - return -EINVAL; - } - - break; - - case STATE_METHOD_NAME: - - if (t == XML_ATTRIBUTE_VALUE) { - - if (n_depth == 0) { - free(context->member_name); - context->member_name = name; - name = NULL; - } - - state = STATE_METHOD; - } else { - log_error("Unexpected token in <method> (2)."); - return -EINVAL; - } - - break; - - case STATE_METHOD_ARG: - - if (t == XML_ATTRIBUTE_NAME) { - if (streq_ptr(name, "name")) - state = STATE_METHOD_ARG_NAME; - else if (streq_ptr(name, "type")) - state = STATE_METHOD_ARG_TYPE; - else if (streq_ptr(name, "direction")) - state = STATE_METHOD_ARG_DIRECTION; - else { - log_error("Unexpected method <arg> attribute %s.", name); - return -EBADMSG; - } - } else if (t == XML_TAG_OPEN) { - if (streq_ptr(name, "annotation")) { - r = parse_xml_annotation(context, NULL); - if (r < 0) - return r; - } else { - log_error("Unexpected method <arg> tag %s.", name); - return -EINVAL; - } - } else if (t == XML_TAG_CLOSE_EMPTY || - (t == XML_TAG_CLOSE && streq_ptr(name, "arg"))) { - - if (n_depth == 0) { - - if (argument_type) { - if (!argument_direction || streq(argument_direction, "in")) { - if (!strextend(&context->member_signature, argument_type, NULL)) - return log_oom(); - } else if (streq(argument_direction, "out")) { - if (!strextend(&context->member_result, argument_type, NULL)) - return log_oom(); - } - } - - argument_type = mfree(argument_type); - argument_direction = mfree(argument_direction); - } - - state = STATE_METHOD; - } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token in method <arg>. (1)"); - return -EINVAL; - } - - break; - - case STATE_METHOD_ARG_NAME: - - if (t == XML_ATTRIBUTE_VALUE) - state = STATE_METHOD_ARG; - else { - log_error("Unexpected token in method <arg>. (2)"); - return -EINVAL; - } - - break; - - case STATE_METHOD_ARG_TYPE: - - if (t == XML_ATTRIBUTE_VALUE) { - free(argument_type); - argument_type = name; - name = NULL; - - state = STATE_METHOD_ARG; - } else { - log_error("Unexpected token in method <arg>. (3)"); - return -EINVAL; - } - - break; - - case STATE_METHOD_ARG_DIRECTION: - - if (t == XML_ATTRIBUTE_VALUE) { - free(argument_direction); - argument_direction = name; - name = NULL; - - state = STATE_METHOD_ARG; - } else { - log_error("Unexpected token in method <arg>. (4)"); - return -EINVAL; - } - - break; - - case STATE_SIGNAL: - - if (t == XML_ATTRIBUTE_NAME) { - if (streq_ptr(name, "name")) - state = STATE_SIGNAL_NAME; - else { - log_error("Unexpected <signal> attribute %s.", name); - return -EBADMSG; - } - } else if (t == XML_TAG_OPEN) { - if (streq_ptr(name, "arg")) - state = STATE_SIGNAL_ARG; - else if (streq_ptr(name, "annotation")) { - r = parse_xml_annotation(context, &context->member_flags); - if (r < 0) - return r; - } else { - log_error("Unexpected <signal> tag %s.", name); - return -EINVAL; - } - } else if (t == XML_TAG_CLOSE_EMPTY || - (t == XML_TAG_CLOSE && streq_ptr(name, "signal"))) { - - if (n_depth == 0) { - if (context->ops->on_signal) { - r = context->ops->on_signal(context->interface_name, context->member_name, context->member_signature, context->member_flags, context->userdata); - if (r < 0) - return r; - } - - context_reset_member(context); - } - - state = STATE_INTERFACE; - - } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token in <signal>. (1)"); - return -EINVAL; - } - - break; - - case STATE_SIGNAL_NAME: - - if (t == XML_ATTRIBUTE_VALUE) { - - if (n_depth == 0) { - free(context->member_name); - context->member_name = name; - name = NULL; - } - - state = STATE_SIGNAL; - } else { - log_error("Unexpected token in <signal>. (2)"); - return -EINVAL; - } - - break; - - - case STATE_SIGNAL_ARG: - - if (t == XML_ATTRIBUTE_NAME) { - if (streq_ptr(name, "name")) - state = STATE_SIGNAL_ARG_NAME; - else if (streq_ptr(name, "type")) - state = STATE_SIGNAL_ARG_TYPE; - else { - log_error("Unexpected signal <arg> attribute %s.", name); - return -EBADMSG; - } - } else if (t == XML_TAG_OPEN) { - if (streq_ptr(name, "annotation")) { - r = parse_xml_annotation(context, NULL); - if (r < 0) - return r; - } else { - log_error("Unexpected signal <arg> tag %s.", name); - return -EINVAL; - } - } else if (t == XML_TAG_CLOSE_EMPTY || - (t == XML_TAG_CLOSE && streq_ptr(name, "arg"))) { - - if (argument_type) { - if (!strextend(&context->member_signature, argument_type, NULL)) - return log_oom(); - - argument_type = mfree(argument_type); - } - - state = STATE_SIGNAL; - } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token in signal <arg> (1)."); - return -EINVAL; - } - - break; - - case STATE_SIGNAL_ARG_NAME: - - if (t == XML_ATTRIBUTE_VALUE) - state = STATE_SIGNAL_ARG; - else { - log_error("Unexpected token in signal <arg> (2)."); - return -EINVAL; - } - - break; - - case STATE_SIGNAL_ARG_TYPE: - - if (t == XML_ATTRIBUTE_VALUE) { - free(argument_type); - argument_type = name; - name = NULL; - - state = STATE_SIGNAL_ARG; - } else { - log_error("Unexpected token in signal <arg> (3)."); - return -EINVAL; - } - - break; - - case STATE_PROPERTY: - - if (t == XML_ATTRIBUTE_NAME) { - if (streq_ptr(name, "name")) - state = STATE_PROPERTY_NAME; - else if (streq_ptr(name, "type")) - state = STATE_PROPERTY_TYPE; - else if (streq_ptr(name, "access")) - state = STATE_PROPERTY_ACCESS; - else { - log_error("Unexpected <property> attribute %s.", name); - return -EBADMSG; - } - } else if (t == XML_TAG_OPEN) { - - if (streq_ptr(name, "annotation")) { - r = parse_xml_annotation(context, &context->member_flags); - if (r < 0) - return r; - } else { - log_error("Unexpected <property> tag %s.", name); - return -EINVAL; - } - - } else if (t == XML_TAG_CLOSE_EMPTY || - (t == XML_TAG_CLOSE && streq_ptr(name, "property"))) { - - if (n_depth == 0) { - if (context->ops->on_property) { - r = context->ops->on_property(context->interface_name, context->member_name, context->member_signature, context->member_writable, context->member_flags, context->userdata); - if (r < 0) - return r; - } - - context_reset_member(context); - } - - state = STATE_INTERFACE; - - } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token in <property>. (1)"); - return -EINVAL; - } - - break; - - case STATE_PROPERTY_NAME: - - if (t == XML_ATTRIBUTE_VALUE) { - - if (n_depth == 0) { - free(context->member_name); - context->member_name = name; - name = NULL; - } - state = STATE_PROPERTY; - } else { - log_error("Unexpected token in <property>. (2)"); - return -EINVAL; - } - - break; - - case STATE_PROPERTY_TYPE: - - if (t == XML_ATTRIBUTE_VALUE) { - - if (n_depth == 0) { - free(context->member_signature); - context->member_signature = name; - name = NULL; - } - - state = STATE_PROPERTY; - } else { - log_error("Unexpected token in <property>. (3)"); - return -EINVAL; - } - - break; - - case STATE_PROPERTY_ACCESS: - - if (t == XML_ATTRIBUTE_VALUE) { - - if (streq(name, "readwrite") || streq(name, "write")) - context->member_writable = true; - - state = STATE_PROPERTY; - } else { - log_error("Unexpected token in <property>. (4)"); - return -EINVAL; - } - - break; - } - } -} - -int parse_xml_introspect(const char *prefix, const char *xml, const XMLIntrospectOps *ops, void *userdata) { - Context context = { - .ops = ops, - .userdata = userdata, - .current = xml, - }; - - int r; - - assert(prefix); - assert(xml); - assert(ops); - - for (;;) { - _cleanup_free_ char *name = NULL; - - r = xml_tokenize(&context.current, &name, &context.xml_state, NULL); - if (r < 0) { - log_error("XML parse error"); - goto finish; - } - - if (r == XML_END) { - r = 0; - break; - } - - if (r == XML_TAG_OPEN) { - - if (streq(name, "node")) { - r = parse_xml_node(&context, prefix, 0); - if (r < 0) - goto finish; - } else { - log_error("Unexpected tag '%s' in introspection data.", name); - r = -EBADMSG; - goto finish; - } - } else if (r != XML_TEXT || !in_charset(name, WHITESPACE)) { - log_error("Unexpected token."); - r = -EBADMSG; - goto finish; - } - } - -finish: - context_reset_interface(&context); - - return r; -} diff --git a/src/libsystemd/sd-bus/busctl-introspect.h b/src/libsystemd/sd-bus/busctl-introspect.h deleted file mode 100644 index d922e352db..0000000000 --- a/src/libsystemd/sd-bus/busctl-introspect.h +++ /dev/null @@ -1,32 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2014 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> - -typedef struct XMLIntrospectOps { - int (*on_path)(const char *path, void *userdata); - int (*on_interface)(const char *name, uint64_t flags, void *userdata); - int (*on_method)(const char *interface, const char *name, const char *signature, const char *result, uint64_t flags, void *userdata); - int (*on_signal)(const char *interface, const char *name, const char *signature, uint64_t flags, void *userdata); - int (*on_property)(const char *interface, const char *name, const char *signature, bool writable, uint64_t flags, void *userdata); -} XMLIntrospectOps; - -int parse_xml_introspect(const char *prefix, const char *xml, const XMLIntrospectOps *ops, void *userdata); diff --git a/src/libsystemd/sd-bus/busctl.c b/src/libsystemd/sd-bus/busctl.c deleted file mode 100644 index 35fabf038c..0000000000 --- a/src/libsystemd/sd-bus/busctl.c +++ /dev/null @@ -1,2073 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <getopt.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-dump.h" -#include "bus-internal.h" -#include "bus-signature.h" -#include "bus-type.h" -#include "bus-util.h" -#include "busctl-introspect.h" -#include "escape.h" -#include "fd-util.h" -#include "locale-util.h" -#include "log.h" -#include "pager.h" -#include "parse-util.h" -#include "path-util.h" -#include "set.h" -#include "strv.h" -#include "terminal-util.h" -#include "user-util.h" -#include "util.h" - -static bool arg_no_pager = false; -static bool arg_legend = true; -static char *arg_address = NULL; -static bool arg_unique = false; -static bool arg_acquired = false; -static bool arg_activatable = false; -static bool arg_show_machine = false; -static char **arg_matches = NULL; -static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; -static char *arg_host = NULL; -static bool arg_user = false; -static size_t arg_snaplen = 4096; -static bool arg_list = false; -static bool arg_quiet = false; -static bool arg_verbose = false; -static bool arg_expect_reply = true; -static bool arg_auto_start = true; -static bool arg_allow_interactive_authorization = true; -static bool arg_augment_creds = true; -static usec_t arg_timeout = 0; - -static void pager_open_if_enabled(void) { - - /* Cache result before we open the pager */ - if (arg_no_pager) - return; - - pager_open(false); -} - -#define NAME_IS_ACQUIRED INT_TO_PTR(1) -#define NAME_IS_ACTIVATABLE INT_TO_PTR(2) - -static int list_bus_names(sd_bus *bus, char **argv) { - _cleanup_strv_free_ char **acquired = NULL, **activatable = NULL; - _cleanup_free_ char **merged = NULL; - _cleanup_hashmap_free_ Hashmap *names = NULL; - char **i; - int r; - size_t max_i = 0; - unsigned n = 0; - void *v; - char *k; - Iterator iterator; - - assert(bus); - - if (!arg_unique && !arg_acquired && !arg_activatable) - arg_unique = arg_acquired = arg_activatable = true; - - r = sd_bus_list_names(bus, (arg_acquired || arg_unique) ? &acquired : NULL, arg_activatable ? &activatable : NULL); - if (r < 0) - return log_error_errno(r, "Failed to list names: %m"); - - pager_open_if_enabled(); - - names = hashmap_new(&string_hash_ops); - if (!names) - return log_oom(); - - STRV_FOREACH(i, acquired) { - max_i = MAX(max_i, strlen(*i)); - - r = hashmap_put(names, *i, NAME_IS_ACQUIRED); - if (r < 0) - return log_error_errno(r, "Failed to add to hashmap: %m"); - } - - STRV_FOREACH(i, activatable) { - max_i = MAX(max_i, strlen(*i)); - - r = hashmap_put(names, *i, NAME_IS_ACTIVATABLE); - if (r < 0 && r != -EEXIST) - return log_error_errno(r, "Failed to add to hashmap: %m"); - } - - merged = new(char*, hashmap_size(names) + 1); - HASHMAP_FOREACH_KEY(v, k, names, iterator) - merged[n++] = k; - - merged[n] = NULL; - strv_sort(merged); - - if (arg_legend) { - printf("%-*s %*s %-*s %-*s %-*s %-*s %-*s %-*s", - (int) max_i, "NAME", 10, "PID", 15, "PROCESS", 16, "USER", 13, "CONNECTION", 25, "UNIT", 10, "SESSION", 19, "DESCRIPTION"); - - if (arg_show_machine) - puts(" MACHINE"); - else - putchar('\n'); - } - - STRV_FOREACH(i, merged) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - sd_id128_t mid; - - if (hashmap_get(names, *i) == NAME_IS_ACTIVATABLE) { - /* Activatable */ - - printf("%-*s", (int) max_i, *i); - printf(" - - - (activatable) - - "); - if (arg_show_machine) - puts(" -"); - else - putchar('\n'); - continue; - - } - - if (!arg_unique && (*i)[0] == ':') - continue; - - if (!arg_acquired && (*i)[0] != ':') - continue; - - printf("%-*s", (int) max_i, *i); - - r = sd_bus_get_name_creds( - bus, *i, - (arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) | - SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID|SD_BUS_CREDS_COMM| - SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_SESSION| - SD_BUS_CREDS_DESCRIPTION, &creds); - if (r >= 0) { - const char *unique, *session, *unit, *cn; - pid_t pid; - uid_t uid; - - r = sd_bus_creds_get_pid(creds, &pid); - if (r >= 0) { - const char *comm = NULL; - - sd_bus_creds_get_comm(creds, &comm); - - printf(" %10lu %-15s", (unsigned long) pid, strna(comm)); - } else - fputs(" - - ", stdout); - - r = sd_bus_creds_get_euid(creds, &uid); - if (r >= 0) { - _cleanup_free_ char *u = NULL; - - u = uid_to_name(uid); - if (!u) - return log_oom(); - - if (strlen(u) > 16) - u[16] = 0; - - printf(" %-16s", u); - } else - fputs(" - ", stdout); - - r = sd_bus_creds_get_unique_name(creds, &unique); - if (r >= 0) - printf(" %-13s", unique); - else - fputs(" - ", stdout); - - r = sd_bus_creds_get_unit(creds, &unit); - if (r >= 0) { - _cleanup_free_ char *e; - - e = ellipsize(unit, 25, 100); - if (!e) - return log_oom(); - - printf(" %-25s", e); - } else - fputs(" - ", stdout); - - r = sd_bus_creds_get_session(creds, &session); - if (r >= 0) - printf(" %-10s", session); - else - fputs(" - ", stdout); - - r = sd_bus_creds_get_description(creds, &cn); - if (r >= 0) - printf(" %-19s", cn); - else - fputs(" - ", stdout); - - } else - printf(" - - - - - - - "); - - if (arg_show_machine) { - r = sd_bus_get_name_machine_id(bus, *i, &mid); - if (r >= 0) { - char m[SD_ID128_STRING_MAX]; - printf(" %s\n", sd_id128_to_string(mid, m)); - } else - puts(" -"); - } else - putchar('\n'); - } - - return 0; -} - -static void print_subtree(const char *prefix, const char *path, char **l) { - const char *vertical, *space; - char **n; - - /* We assume the list is sorted. Let's first skip over the - * entry we are looking at. */ - for (;;) { - if (!*l) - return; - - if (!streq(*l, path)) - break; - - l++; - } - - vertical = strjoina(prefix, draw_special_char(DRAW_TREE_VERTICAL)); - space = strjoina(prefix, draw_special_char(DRAW_TREE_SPACE)); - - for (;;) { - bool has_more = false; - - if (!*l || !path_startswith(*l, path)) - break; - - n = l + 1; - for (;;) { - if (!*n || !path_startswith(*n, path)) - break; - - if (!path_startswith(*n, *l)) { - has_more = true; - break; - } - - n++; - } - - printf("%s%s%s\n", prefix, draw_special_char(has_more ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT), *l); - - print_subtree(has_more ? vertical : space, *l, l); - l = n; - } -} - -static void print_tree(const char *prefix, char **l) { - - pager_open_if_enabled(); - - prefix = strempty(prefix); - - if (arg_list) { - char **i; - - STRV_FOREACH(i, l) - printf("%s%s\n", prefix, *i); - return; - } - - if (strv_isempty(l)) { - printf("No objects discovered.\n"); - return; - } - - if (streq(l[0], "/") && !l[1]) { - printf("Only root object discovered.\n"); - return; - } - - print_subtree(prefix, "/", l); -} - -static int on_path(const char *path, void *userdata) { - Set *paths = userdata; - int r; - - assert(paths); - - r = set_put_strdup(paths, path); - if (r < 0) - return log_oom(); - - return 0; -} - -static int find_nodes(sd_bus *bus, const char *service, const char *path, Set *paths, bool many) { - static const XMLIntrospectOps ops = { - .on_path = on_path, - }; - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - const char *xml; - int r; - - r = sd_bus_call_method(bus, service, path, "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, ""); - if (r < 0) { - if (many) - printf("Failed to introspect object %s of service %s: %s\n", path, service, bus_error_message(&error, r)); - else - log_error("Failed to introspect object %s of service %s: %s", path, service, bus_error_message(&error, r)); - return r; - } - - r = sd_bus_message_read(reply, "s", &xml); - if (r < 0) - return bus_log_parse_error(r); - - return parse_xml_introspect(path, xml, &ops, paths); -} - -static int tree_one(sd_bus *bus, const char *service, const char *prefix, bool many) { - _cleanup_set_free_free_ Set *paths = NULL, *done = NULL, *failed = NULL; - _cleanup_free_ char **l = NULL; - char *m; - int r; - - paths = set_new(&string_hash_ops); - if (!paths) - return log_oom(); - - done = set_new(&string_hash_ops); - if (!done) - return log_oom(); - - failed = set_new(&string_hash_ops); - if (!failed) - return log_oom(); - - m = strdup("/"); - if (!m) - return log_oom(); - - r = set_put(paths, m); - if (r < 0) { - free(m); - return log_oom(); - } - - for (;;) { - _cleanup_free_ char *p = NULL; - int q; - - p = set_steal_first(paths); - if (!p) - break; - - if (set_contains(done, p) || - set_contains(failed, p)) - continue; - - q = find_nodes(bus, service, p, paths, many); - if (q < 0) { - if (r >= 0) - r = q; - - q = set_put(failed, p); - } else - q = set_put(done, p); - - if (q < 0) - return log_oom(); - - assert(q != 0); - p = NULL; - } - - pager_open_if_enabled(); - - l = set_get_strv(done); - if (!l) - return log_oom(); - - strv_sort(l); - print_tree(prefix, l); - - fflush(stdout); - - return r; -} - -static int tree(sd_bus *bus, char **argv) { - char **i; - int r = 0; - - if (!arg_unique && !arg_acquired) - arg_acquired = true; - - if (strv_length(argv) <= 1) { - _cleanup_strv_free_ char **names = NULL; - bool not_first = false; - - r = sd_bus_list_names(bus, &names, NULL); - if (r < 0) - return log_error_errno(r, "Failed to get name list: %m"); - - pager_open_if_enabled(); - - STRV_FOREACH(i, names) { - int q; - - if (!arg_unique && (*i)[0] == ':') - continue; - - if (!arg_acquired && (*i)[0] == ':') - continue; - - if (not_first) - printf("\n"); - - printf("Service %s%s%s:\n", ansi_highlight(), *i, ansi_normal()); - - q = tree_one(bus, *i, NULL, true); - if (q < 0 && r >= 0) - r = q; - - not_first = true; - } - } else { - STRV_FOREACH(i, argv+1) { - int q; - - if (i > argv+1) - printf("\n"); - - if (argv[2]) { - pager_open_if_enabled(); - printf("Service %s%s%s:\n", ansi_highlight(), *i, ansi_normal()); - } - - q = tree_one(bus, *i, NULL, !!argv[2]); - if (q < 0 && r >= 0) - r = q; - } - } - - return r; -} - -static int format_cmdline(sd_bus_message *m, FILE *f, bool needs_space) { - int r; - - for (;;) { - const char *contents = NULL; - char type; - union { - uint8_t u8; - uint16_t u16; - int16_t s16; - uint32_t u32; - int32_t s32; - uint64_t u64; - int64_t s64; - double d64; - const char *string; - int i; - } basic; - - r = sd_bus_message_peek_type(m, &type, &contents); - if (r <= 0) - return r; - - if (bus_type_is_container(type) > 0) { - - r = sd_bus_message_enter_container(m, type, contents); - if (r < 0) - return r; - - if (type == SD_BUS_TYPE_ARRAY) { - unsigned n = 0; - - /* count array entries */ - for (;;) { - - r = sd_bus_message_skip(m, contents); - if (r < 0) - return r; - if (r == 0) - break; - - n++; - } - - r = sd_bus_message_rewind(m, false); - if (r < 0) - return r; - - if (needs_space) - fputc(' ', f); - - fprintf(f, "%u", n); - } else if (type == SD_BUS_TYPE_VARIANT) { - - if (needs_space) - fputc(' ', f); - - fprintf(f, "%s", contents); - } - - r = format_cmdline(m, f, needs_space || IN_SET(type, SD_BUS_TYPE_ARRAY, SD_BUS_TYPE_VARIANT)); - if (r < 0) - return r; - - r = sd_bus_message_exit_container(m); - if (r < 0) - return r; - - continue; - } - - r = sd_bus_message_read_basic(m, type, &basic); - if (r < 0) - return r; - - if (needs_space) - fputc(' ', f); - - switch (type) { - case SD_BUS_TYPE_BYTE: - fprintf(f, "%u", basic.u8); - break; - - case SD_BUS_TYPE_BOOLEAN: - fputs(true_false(basic.i), f); - break; - - case SD_BUS_TYPE_INT16: - fprintf(f, "%i", basic.s16); - break; - - case SD_BUS_TYPE_UINT16: - fprintf(f, "%u", basic.u16); - break; - - case SD_BUS_TYPE_INT32: - fprintf(f, "%i", basic.s32); - break; - - case SD_BUS_TYPE_UINT32: - fprintf(f, "%u", basic.u32); - break; - - case SD_BUS_TYPE_INT64: - fprintf(f, "%" PRIi64, basic.s64); - break; - - case SD_BUS_TYPE_UINT64: - fprintf(f, "%" PRIu64, basic.u64); - break; - - case SD_BUS_TYPE_DOUBLE: - fprintf(f, "%g", basic.d64); - break; - - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: { - _cleanup_free_ char *b = NULL; - - b = cescape(basic.string); - if (!b) - return -ENOMEM; - - fprintf(f, "\"%s\"", b); - break; - } - - case SD_BUS_TYPE_UNIX_FD: - fprintf(f, "%i", basic.i); - break; - - default: - assert_not_reached("Unknown basic type."); - } - - needs_space = true; - } -} - -typedef struct Member { - const char *type; - char *interface; - char *name; - char *signature; - char *result; - char *value; - bool writable; - uint64_t flags; -} Member; - -static void member_hash_func(const void *p, struct siphash *state) { - const Member *m = p; - uint64_t arity = 1; - - assert(m); - assert(m->type); - - string_hash_func(m->type, state); - - arity += !!m->name + !!m->interface; - - uint64_hash_func(&arity, state); - - if (m->name) - string_hash_func(m->name, state); - - if (m->interface) - string_hash_func(m->interface, state); -} - -static int member_compare_func(const void *a, const void *b) { - const Member *x = a, *y = b; - int d; - - assert(x); - assert(y); - assert(x->type); - assert(y->type); - - d = strcmp_ptr(x->interface, y->interface); - if (d != 0) - return d; - - d = strcmp(x->type, y->type); - if (d != 0) - return d; - - return strcmp_ptr(x->name, y->name); -} - -static int member_compare_funcp(const void *a, const void *b) { - const Member *const * x = (const Member *const *) a, * const *y = (const Member *const *) b; - - return member_compare_func(*x, *y); -} - -static void member_free(Member *m) { - if (!m) - return; - - free(m->interface); - free(m->name); - free(m->signature); - free(m->result); - free(m->value); - free(m); -} - -DEFINE_TRIVIAL_CLEANUP_FUNC(Member*, member_free); - -static void member_set_free(Set *s) { - Member *m; - - while ((m = set_steal_first(s))) - member_free(m); - - set_free(s); -} - -DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, member_set_free); - -static int on_interface(const char *interface, uint64_t flags, void *userdata) { - _cleanup_(member_freep) Member *m; - Set *members = userdata; - int r; - - assert(interface); - assert(members); - - m = new0(Member, 1); - if (!m) - return log_oom(); - - m->type = "interface"; - m->flags = flags; - - r = free_and_strdup(&m->interface, interface); - if (r < 0) - return log_oom(); - - r = set_put(members, m); - if (r <= 0) { - log_error("Duplicate interface"); - return -EINVAL; - } - - m = NULL; - return 0; -} - -static int on_method(const char *interface, const char *name, const char *signature, const char *result, uint64_t flags, void *userdata) { - _cleanup_(member_freep) Member *m; - Set *members = userdata; - int r; - - assert(interface); - assert(name); - - m = new0(Member, 1); - if (!m) - return log_oom(); - - m->type = "method"; - m->flags = flags; - - r = free_and_strdup(&m->interface, interface); - if (r < 0) - return log_oom(); - - r = free_and_strdup(&m->name, name); - if (r < 0) - return log_oom(); - - r = free_and_strdup(&m->signature, signature); - if (r < 0) - return log_oom(); - - r = free_and_strdup(&m->result, result); - if (r < 0) - return log_oom(); - - r = set_put(members, m); - if (r <= 0) { - log_error("Duplicate method"); - return -EINVAL; - } - - m = NULL; - return 0; -} - -static int on_signal(const char *interface, const char *name, const char *signature, uint64_t flags, void *userdata) { - _cleanup_(member_freep) Member *m; - Set *members = userdata; - int r; - - assert(interface); - assert(name); - - m = new0(Member, 1); - if (!m) - return log_oom(); - - m->type = "signal"; - m->flags = flags; - - r = free_and_strdup(&m->interface, interface); - if (r < 0) - return log_oom(); - - r = free_and_strdup(&m->name, name); - if (r < 0) - return log_oom(); - - r = free_and_strdup(&m->signature, signature); - if (r < 0) - return log_oom(); - - r = set_put(members, m); - if (r <= 0) { - log_error("Duplicate signal"); - return -EINVAL; - } - - m = NULL; - return 0; -} - -static int on_property(const char *interface, const char *name, const char *signature, bool writable, uint64_t flags, void *userdata) { - _cleanup_(member_freep) Member *m; - Set *members = userdata; - int r; - - assert(interface); - assert(name); - - m = new0(Member, 1); - if (!m) - return log_oom(); - - m->type = "property"; - m->flags = flags; - m->writable = writable; - - r = free_and_strdup(&m->interface, interface); - if (r < 0) - return log_oom(); - - r = free_and_strdup(&m->name, name); - if (r < 0) - return log_oom(); - - r = free_and_strdup(&m->signature, signature); - if (r < 0) - return log_oom(); - - r = set_put(members, m); - if (r <= 0) { - log_error("Duplicate property"); - return -EINVAL; - } - - m = NULL; - return 0; -} - -static const char *strdash(const char *x) { - return isempty(x) ? "-" : x; -} - -static int introspect(sd_bus *bus, char **argv) { - static const struct hash_ops member_hash_ops = { - .hash = member_hash_func, - .compare = member_compare_func, - }; - - static const XMLIntrospectOps ops = { - .on_interface = on_interface, - .on_method = on_method, - .on_signal = on_signal, - .on_property = on_property, - }; - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_(member_set_freep) Set *members = NULL; - Iterator i; - Member *m; - const char *xml; - int r; - unsigned name_width, type_width, signature_width, result_width; - Member **sorted = NULL; - unsigned k = 0, j, n_args; - - n_args = strv_length(argv); - if (n_args < 3) { - log_error("Requires service and object path argument."); - return -EINVAL; - } - - if (n_args > 4) { - log_error("Too many arguments."); - return -EINVAL; - } - - members = set_new(&member_hash_ops); - if (!members) - return log_oom(); - - r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, ""); - if (r < 0) { - log_error("Failed to introspect object %s of service %s: %s", argv[2], argv[1], bus_error_message(&error, r)); - return r; - } - - r = sd_bus_message_read(reply, "s", &xml); - if (r < 0) - return bus_log_parse_error(r); - - /* First, get list of all properties */ - r = parse_xml_introspect(argv[2], xml, &ops, members); - if (r < 0) - return r; - - /* Second, find the current values for them */ - SET_FOREACH(m, members, i) { - - if (!streq(m->type, "property")) - continue; - - if (m->value) - continue; - - if (argv[3] && !streq(argv[3], m->interface)) - continue; - - r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", m->interface); - if (r < 0) { - log_error("%s", bus_error_message(&error, r)); - return r; - } - - r = sd_bus_message_enter_container(reply, 'a', "{sv}"); - if (r < 0) - return bus_log_parse_error(r); - - for (;;) { - Member *z; - _cleanup_free_ char *buf = NULL; - _cleanup_fclose_ FILE *mf = NULL; - size_t sz = 0; - const char *name; - - r = sd_bus_message_enter_container(reply, 'e', "sv"); - if (r < 0) - return bus_log_parse_error(r); - - if (r == 0) - break; - - r = sd_bus_message_read(reply, "s", &name); - if (r < 0) - return bus_log_parse_error(r); - - r = sd_bus_message_enter_container(reply, 'v', NULL); - if (r < 0) - return bus_log_parse_error(r); - - mf = open_memstream(&buf, &sz); - if (!mf) - return log_oom(); - - r = format_cmdline(reply, mf, false); - if (r < 0) - return bus_log_parse_error(r); - - fclose(mf); - mf = NULL; - - z = set_get(members, &((Member) { - .type = "property", - .interface = m->interface, - .name = (char*) name })); - if (z) { - free(z->value); - z->value = buf; - buf = NULL; - } - - r = sd_bus_message_exit_container(reply); - if (r < 0) - return bus_log_parse_error(r); - - r = sd_bus_message_exit_container(reply); - if (r < 0) - return bus_log_parse_error(r); - } - - r = sd_bus_message_exit_container(reply); - if (r < 0) - return bus_log_parse_error(r); - } - - pager_open_if_enabled(); - - name_width = strlen("NAME"); - type_width = strlen("TYPE"); - signature_width = strlen("SIGNATURE"); - result_width = strlen("RESULT/VALUE"); - - sorted = newa(Member*, set_size(members)); - - SET_FOREACH(m, members, i) { - - if (argv[3] && !streq(argv[3], m->interface)) - continue; - - if (m->interface) - name_width = MAX(name_width, strlen(m->interface)); - if (m->name) - name_width = MAX(name_width, strlen(m->name) + 1); - if (m->type) - type_width = MAX(type_width, strlen(m->type)); - if (m->signature) - signature_width = MAX(signature_width, strlen(m->signature)); - if (m->result) - result_width = MAX(result_width, strlen(m->result)); - if (m->value) - result_width = MAX(result_width, strlen(m->value)); - - sorted[k++] = m; - } - - if (result_width > 40) - result_width = 40; - - qsort(sorted, k, sizeof(Member*), member_compare_funcp); - - if (arg_legend) { - printf("%-*s %-*s %-*s %-*s %s\n", - (int) name_width, "NAME", - (int) type_width, "TYPE", - (int) signature_width, "SIGNATURE", - (int) result_width, "RESULT/VALUE", - "FLAGS"); - } - - for (j = 0; j < k; j++) { - _cleanup_free_ char *ellipsized = NULL; - const char *rv; - bool is_interface; - - m = sorted[j]; - - if (argv[3] && !streq(argv[3], m->interface)) - continue; - - is_interface = streq(m->type, "interface"); - - if (argv[3] && is_interface) - continue; - - if (m->value) { - ellipsized = ellipsize(m->value, result_width, 100); - if (!ellipsized) - return log_oom(); - - rv = ellipsized; - } else - rv = strdash(m->result); - - printf("%s%s%-*s%s %-*s %-*s %-*s%s%s%s%s%s%s\n", - is_interface ? ansi_highlight() : "", - is_interface ? "" : ".", - - !is_interface + (int) name_width, strdash(streq_ptr(m->type, "interface") ? m->interface : m->name), - is_interface ? ansi_normal() : "", - (int) type_width, strdash(m->type), - (int) signature_width, strdash(m->signature), - (int) result_width, rv, - (m->flags & SD_BUS_VTABLE_DEPRECATED) ? " deprecated" : (m->flags || m->writable ? "" : " -"), - (m->flags & SD_BUS_VTABLE_METHOD_NO_REPLY) ? " no-reply" : "", - (m->flags & SD_BUS_VTABLE_PROPERTY_CONST) ? " const" : "", - (m->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) ? " emits-change" : "", - (m->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) ? " emits-invalidation" : "", - m->writable ? " writable" : ""); - } - - return 0; -} - -static int message_dump(sd_bus_message *m, FILE *f) { - return bus_message_dump(m, f, BUS_MESSAGE_DUMP_WITH_HEADER); -} - -static int message_pcap(sd_bus_message *m, FILE *f) { - return bus_message_pcap_frame(m, arg_snaplen, f); -} - -static int monitor(sd_bus *bus, char *argv[], int (*dump)(sd_bus_message *m, FILE *f)) { - bool added_something = false; - char **i; - int r; - - STRV_FOREACH(i, argv+1) { - _cleanup_free_ char *m = NULL; - - if (!service_name_is_valid(*i)) { - log_error("Invalid service name '%s'", *i); - return -EINVAL; - } - - m = strjoin("sender='", *i, "'", NULL); - if (!m) - return log_oom(); - - r = sd_bus_add_match(bus, NULL, m, NULL, NULL); - if (r < 0) - return log_error_errno(r, "Failed to add match: %m"); - - free(m); - m = strjoin("destination='", *i, "'", NULL); - if (!m) - return log_oom(); - - r = sd_bus_add_match(bus, NULL, m, NULL, NULL); - if (r < 0) - return log_error_errno(r, "Failed to add match: %m"); - - added_something = true; - } - - STRV_FOREACH(i, arg_matches) { - r = sd_bus_add_match(bus, NULL, *i, NULL, NULL); - if (r < 0) - return log_error_errno(r, "Failed to add match: %m"); - - added_something = true; - } - - if (!added_something) { - r = sd_bus_add_match(bus, NULL, "", NULL, NULL); - if (r < 0) - return log_error_errno(r, "Failed to add match: %m"); - } - - log_info("Monitoring bus message stream."); - - for (;;) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - - r = sd_bus_process(bus, &m); - if (r < 0) - return log_error_errno(r, "Failed to process bus: %m"); - - if (m) { - dump(m, stdout); - fflush(stdout); - - if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected") > 0) { - log_info("Connection terminated, exiting."); - return 0; - } - - continue; - } - - if (r > 0) - continue; - - r = sd_bus_wait(bus, (uint64_t) -1); - if (r < 0) - return log_error_errno(r, "Failed to wait for bus: %m"); - } -} - -static int capture(sd_bus *bus, char *argv[]) { - int r; - - if (isatty(fileno(stdout)) > 0) { - log_error("Refusing to write message data to console, please redirect output to a file."); - return -EINVAL; - } - - bus_pcap_header(arg_snaplen, stdout); - - r = monitor(bus, argv, message_pcap); - if (r < 0) - return r; - - if (ferror(stdout)) { - log_error("Couldn't write capture file."); - return -EIO; - } - - return r; -} - -static int status(sd_bus *bus, char *argv[]) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - pid_t pid; - int r; - - assert(bus); - - if (strv_length(argv) > 2) { - log_error("Expects no or one argument."); - return -EINVAL; - } - - if (argv[1]) { - r = parse_pid(argv[1], &pid); - if (r < 0) - r = sd_bus_get_name_creds( - bus, - argv[1], - (arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) | _SD_BUS_CREDS_ALL, - &creds); - else - r = sd_bus_creds_new_from_pid( - &creds, - pid, - _SD_BUS_CREDS_ALL); - } else { - const char *scope, *address; - sd_id128_t bus_id; - - r = sd_bus_get_address(bus, &address); - if (r >= 0) - printf("BusAddress=%s%s%s\n", ansi_highlight(), address, ansi_normal()); - - r = sd_bus_get_scope(bus, &scope); - if (r >= 0) - printf("BusScope=%s%s%s\n", ansi_highlight(), scope, ansi_normal()); - - r = sd_bus_get_bus_id(bus, &bus_id); - if (r >= 0) - printf("BusID=%s" SD_ID128_FORMAT_STR "%s\n", ansi_highlight(), SD_ID128_FORMAT_VAL(bus_id), ansi_normal()); - - r = sd_bus_get_owner_creds( - bus, - (arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) | _SD_BUS_CREDS_ALL, - &creds); - } - - if (r < 0) - return log_error_errno(r, "Failed to get credentials: %m"); - - bus_creds_dump(creds, NULL, false); - return 0; -} - -static int message_append_cmdline(sd_bus_message *m, const char *signature, char ***x) { - char **p; - int r; - - assert(m); - assert(signature); - assert(x); - - p = *x; - - for (;;) { - const char *v; - char t; - - t = *signature; - v = *p; - - if (t == 0) - break; - if (!v) { - log_error("Too few parameters for signature."); - return -EINVAL; - } - - signature++; - p++; - - switch (t) { - - case SD_BUS_TYPE_BOOLEAN: - - r = parse_boolean(v); - if (r < 0) { - log_error("Failed to parse as boolean: %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &r); - break; - - case SD_BUS_TYPE_BYTE: { - uint8_t z; - - r = safe_atou8(v, &z); - if (r < 0) { - log_error("Failed to parse as byte (unsigned 8bit integer): %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &z); - break; - } - - case SD_BUS_TYPE_INT16: { - int16_t z; - - r = safe_atoi16(v, &z); - if (r < 0) { - log_error("Failed to parse as signed 16bit integer: %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &z); - break; - } - - case SD_BUS_TYPE_UINT16: { - uint16_t z; - - r = safe_atou16(v, &z); - if (r < 0) { - log_error("Failed to parse as unsigned 16bit integer: %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &z); - break; - } - - case SD_BUS_TYPE_INT32: { - int32_t z; - - r = safe_atoi32(v, &z); - if (r < 0) { - log_error("Failed to parse as signed 32bit integer: %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &z); - break; - } - - case SD_BUS_TYPE_UINT32: { - uint32_t z; - - r = safe_atou32(v, &z); - if (r < 0) { - log_error("Failed to parse as unsigned 32bit integer: %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &z); - break; - } - - case SD_BUS_TYPE_INT64: { - int64_t z; - - r = safe_atoi64(v, &z); - if (r < 0) { - log_error("Failed to parse as signed 64bit integer: %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &z); - break; - } - - case SD_BUS_TYPE_UINT64: { - uint64_t z; - - r = safe_atou64(v, &z); - if (r < 0) { - log_error("Failed to parse as unsigned 64bit integer: %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &z); - break; - } - - - case SD_BUS_TYPE_DOUBLE: { - double z; - - r = safe_atod(v, &z); - if (r < 0) { - log_error("Failed to parse as double precision floating point: %s", v); - return r; - } - - r = sd_bus_message_append_basic(m, t, &z); - break; - } - - case SD_BUS_TYPE_STRING: - case SD_BUS_TYPE_OBJECT_PATH: - case SD_BUS_TYPE_SIGNATURE: - - r = sd_bus_message_append_basic(m, t, v); - break; - - case SD_BUS_TYPE_ARRAY: { - uint32_t n; - size_t k; - - r = safe_atou32(v, &n); - if (r < 0) { - log_error("Failed to parse number of array entries: %s", v); - return r; - } - - r = signature_element_length(signature, &k); - if (r < 0) { - log_error("Invalid array signature."); - return r; - } - - { - unsigned i; - char s[k + 1]; - memcpy(s, signature, k); - s[k] = 0; - - r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, s); - if (r < 0) - return bus_log_create_error(r); - - for (i = 0; i < n; i++) { - r = message_append_cmdline(m, s, &p); - if (r < 0) - return r; - } - } - - signature += k; - - r = sd_bus_message_close_container(m); - break; - } - - case SD_BUS_TYPE_VARIANT: - r = sd_bus_message_open_container(m, SD_BUS_TYPE_VARIANT, v); - if (r < 0) - return bus_log_create_error(r); - - r = message_append_cmdline(m, v, &p); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - break; - - case SD_BUS_TYPE_STRUCT_BEGIN: - case SD_BUS_TYPE_DICT_ENTRY_BEGIN: { - size_t k; - - signature--; - p--; - - r = signature_element_length(signature, &k); - if (r < 0) { - log_error("Invalid struct/dict entry signature."); - return r; - } - - { - char s[k-1]; - memcpy(s, signature + 1, k - 2); - s[k - 2] = 0; - - r = sd_bus_message_open_container(m, t == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s); - if (r < 0) - return bus_log_create_error(r); - - r = message_append_cmdline(m, s, &p); - if (r < 0) - return r; - } - - signature += k; - - r = sd_bus_message_close_container(m); - break; - } - - case SD_BUS_TYPE_UNIX_FD: - log_error("UNIX file descriptor not supported as type."); - return -EINVAL; - - default: - log_error("Unknown signature type %c.", t); - return -EINVAL; - } - - if (r < 0) - return bus_log_create_error(r); - } - - *x = p; - return 0; -} - -static int call(sd_bus *bus, char *argv[]) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; - int r; - - assert(bus); - - if (strv_length(argv) < 5) { - log_error("Expects at least four arguments."); - return -EINVAL; - } - - r = sd_bus_message_new_method_call(bus, &m, argv[1], argv[2], argv[3], argv[4]); - if (r < 0) - return bus_log_create_error(r); - - r = sd_bus_message_set_expect_reply(m, arg_expect_reply); - if (r < 0) - return bus_log_create_error(r); - - r = sd_bus_message_set_auto_start(m, arg_auto_start); - if (r < 0) - return bus_log_create_error(r); - - r = sd_bus_message_set_allow_interactive_authorization(m, arg_allow_interactive_authorization); - if (r < 0) - return bus_log_create_error(r); - - if (!isempty(argv[5])) { - char **p; - - p = argv+6; - - r = message_append_cmdline(m, argv[5], &p); - if (r < 0) - return r; - - if (*p) { - log_error("Too many parameters for signature."); - return -EINVAL; - } - } - - if (!arg_expect_reply) { - r = sd_bus_send(bus, m, NULL); - if (r < 0) { - log_error("Failed to send message."); - return r; - } - - return 0; - } - - r = sd_bus_call(bus, m, arg_timeout, &error, &reply); - if (r < 0) { - log_error("%s", bus_error_message(&error, r)); - return r; - } - - r = sd_bus_message_is_empty(reply); - if (r < 0) - return bus_log_parse_error(r); - - if (r == 0 && !arg_quiet) { - - if (arg_verbose) { - pager_open_if_enabled(); - - r = bus_message_dump(reply, stdout, 0); - if (r < 0) - return r; - } else { - - fputs(sd_bus_message_get_signature(reply, true), stdout); - fputc(' ', stdout); - - r = format_cmdline(reply, stdout, false); - if (r < 0) - return bus_log_parse_error(r); - - fputc('\n', stdout); - } - } - - return 0; -} - -static int get_property(sd_bus *bus, char *argv[]) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - unsigned n; - char **i; - int r; - - assert(bus); - - n = strv_length(argv); - if (n < 5) { - log_error("Expects at least four arguments."); - return -EINVAL; - } - - STRV_FOREACH(i, argv + 4) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - const char *contents = NULL; - char type; - - r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "Get", &error, &reply, "ss", argv[3], *i); - if (r < 0) { - log_error("%s", bus_error_message(&error, r)); - return r; - } - - r = sd_bus_message_peek_type(reply, &type, &contents); - if (r < 0) - return bus_log_parse_error(r); - - r = sd_bus_message_enter_container(reply, 'v', contents); - if (r < 0) - return bus_log_parse_error(r); - - if (arg_verbose) { - pager_open_if_enabled(); - - r = bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_SUBTREE_ONLY); - if (r < 0) - return r; - } else { - fputs(contents, stdout); - fputc(' ', stdout); - - r = format_cmdline(reply, stdout, false); - if (r < 0) - return bus_log_parse_error(r); - - fputc('\n', stdout); - } - - r = sd_bus_message_exit_container(reply); - if (r < 0) - return bus_log_parse_error(r); - } - - return 0; -} - -static int set_property(sd_bus *bus, char *argv[]) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - unsigned n; - char **p; - int r; - - assert(bus); - - n = strv_length(argv); - if (n < 6) { - log_error("Expects at least five arguments."); - return -EINVAL; - } - - r = sd_bus_message_new_method_call(bus, &m, argv[1], argv[2], "org.freedesktop.DBus.Properties", "Set"); - if (r < 0) - return bus_log_create_error(r); - - r = sd_bus_message_append(m, "ss", argv[3], argv[4]); - if (r < 0) - return bus_log_create_error(r); - - r = sd_bus_message_open_container(m, 'v', argv[5]); - if (r < 0) - return bus_log_create_error(r); - - p = argv+6; - r = message_append_cmdline(m, argv[5], &p); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return bus_log_create_error(r); - - if (*p) { - log_error("Too many parameters for signature."); - return -EINVAL; - } - - r = sd_bus_call(bus, m, arg_timeout, &error, NULL); - if (r < 0) { - log_error("%s", bus_error_message(&error, r)); - return r; - } - - return 0; -} - -static int help(void) { - printf("%s [OPTIONS...] {COMMAND} ...\n\n" - "Introspect the bus.\n\n" - " -h --help Show this help\n" - " --version Show package version\n" - " --no-pager Do not pipe output into a pager\n" - " --no-legend Do not show the headers and footers\n" - " --system Connect to system bus\n" - " --user Connect to user bus\n" - " -H --host=[USER@]HOST Operate on remote host\n" - " -M --machine=CONTAINER Operate on local container\n" - " --address=ADDRESS Connect to bus specified by address\n" - " --show-machine Show machine ID column in list\n" - " --unique Only show unique names\n" - " --acquired Only show acquired names\n" - " --activatable Only show activatable names\n" - " --match=MATCH Only show matching messages\n" - " --size=SIZE Maximum length of captured packet\n" - " --list Don't show tree, but simple object path list\n" - " --quiet Don't show method call reply\n" - " --verbose Show result values in long format\n" - " --expect-reply=BOOL Expect a method call reply\n" - " --auto-start=BOOL Auto-start destination service\n" - " --allow-interactive-authorization=BOOL\n" - " Allow interactive authorization for operation\n" - " --timeout=SECS Maximum time to wait for method call completion\n" - " --augment-creds=BOOL Extend credential data with data read from /proc/$PID\n\n" - "Commands:\n" - " list List bus names\n" - " status [SERVICE] Show bus service, process or bus owner credentials\n" - " monitor [SERVICE...] Show bus traffic\n" - " capture [SERVICE...] Capture bus traffic as pcap\n" - " tree [SERVICE...] Show object tree of service\n" - " introspect SERVICE OBJECT [INTERFACE]\n" - " call SERVICE OBJECT INTERFACE METHOD [SIGNATURE [ARGUMENT...]]\n" - " Call a method\n" - " get-property SERVICE OBJECT INTERFACE PROPERTY...\n" - " Get property value\n" - " set-property SERVICE OBJECT INTERFACE PROPERTY SIGNATURE ARGUMENT...\n" - " Set property value\n" - " help Show this help\n" - , program_invocation_short_name); - - return 0; -} - -static int parse_argv(int argc, char *argv[]) { - - enum { - ARG_VERSION = 0x100, - ARG_NO_PAGER, - ARG_NO_LEGEND, - ARG_SYSTEM, - ARG_USER, - ARG_ADDRESS, - ARG_MATCH, - ARG_SHOW_MACHINE, - ARG_UNIQUE, - ARG_ACQUIRED, - ARG_ACTIVATABLE, - ARG_SIZE, - ARG_LIST, - ARG_VERBOSE, - ARG_EXPECT_REPLY, - ARG_AUTO_START, - ARG_ALLOW_INTERACTIVE_AUTHORIZATION, - ARG_TIMEOUT, - ARG_AUGMENT_CREDS, - }; - - static const struct option options[] = { - { "help", no_argument, NULL, 'h' }, - { "version", no_argument, NULL, ARG_VERSION }, - { "no-pager", no_argument, NULL, ARG_NO_PAGER }, - { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, - { "system", no_argument, NULL, ARG_SYSTEM }, - { "user", no_argument, NULL, ARG_USER }, - { "address", required_argument, NULL, ARG_ADDRESS }, - { "show-machine", no_argument, NULL, ARG_SHOW_MACHINE }, - { "unique", no_argument, NULL, ARG_UNIQUE }, - { "acquired", no_argument, NULL, ARG_ACQUIRED }, - { "activatable", no_argument, NULL, ARG_ACTIVATABLE }, - { "match", required_argument, NULL, ARG_MATCH }, - { "host", required_argument, NULL, 'H' }, - { "machine", required_argument, NULL, 'M' }, - { "size", required_argument, NULL, ARG_SIZE }, - { "list", no_argument, NULL, ARG_LIST }, - { "quiet", no_argument, NULL, 'q' }, - { "verbose", no_argument, NULL, ARG_VERBOSE }, - { "expect-reply", required_argument, NULL, ARG_EXPECT_REPLY }, - { "auto-start", required_argument, NULL, ARG_AUTO_START }, - { "allow-interactive-authorization", required_argument, NULL, ARG_ALLOW_INTERACTIVE_AUTHORIZATION }, - { "timeout", required_argument, NULL, ARG_TIMEOUT }, - { "augment-creds",required_argument, NULL, ARG_AUGMENT_CREDS}, - {}, - }; - - int c, r; - - assert(argc >= 0); - assert(argv); - - while ((c = getopt_long(argc, argv, "hH:M:q", options, NULL)) >= 0) - - switch (c) { - - case 'h': - return help(); - - case ARG_VERSION: - return version(); - - case ARG_NO_PAGER: - arg_no_pager = true; - break; - - case ARG_NO_LEGEND: - arg_legend = false; - break; - - case ARG_USER: - arg_user = true; - break; - - case ARG_SYSTEM: - arg_user = false; - break; - - case ARG_ADDRESS: - arg_address = optarg; - break; - - case ARG_SHOW_MACHINE: - arg_show_machine = true; - break; - - case ARG_UNIQUE: - arg_unique = true; - break; - - case ARG_ACQUIRED: - arg_acquired = true; - break; - - case ARG_ACTIVATABLE: - arg_activatable = true; - break; - - case ARG_MATCH: - if (strv_extend(&arg_matches, optarg) < 0) - return log_oom(); - break; - - case ARG_SIZE: { - uint64_t sz; - - r = parse_size(optarg, 1024, &sz); - if (r < 0) { - log_error("Failed to parse size: %s", optarg); - return r; - } - - if ((uint64_t) (size_t) sz != sz) { - log_error("Size out of range."); - return -E2BIG; - } - - arg_snaplen = (size_t) sz; - break; - } - - case ARG_LIST: - arg_list = true; - break; - - case 'H': - arg_transport = BUS_TRANSPORT_REMOTE; - arg_host = optarg; - break; - - case 'M': - arg_transport = BUS_TRANSPORT_MACHINE; - arg_host = optarg; - break; - - case 'q': - arg_quiet = true; - break; - - case ARG_VERBOSE: - arg_verbose = true; - break; - - case ARG_EXPECT_REPLY: - r = parse_boolean(optarg); - if (r < 0) { - log_error("Failed to parse --expect-reply= parameter."); - return r; - } - - arg_expect_reply = !!r; - break; - - - case ARG_AUTO_START: - r = parse_boolean(optarg); - if (r < 0) { - log_error("Failed to parse --auto-start= parameter."); - return r; - } - - arg_auto_start = !!r; - break; - - - case ARG_ALLOW_INTERACTIVE_AUTHORIZATION: - r = parse_boolean(optarg); - if (r < 0) { - log_error("Failed to parse --allow-interactive-authorization= parameter."); - return r; - } - - arg_allow_interactive_authorization = !!r; - break; - - case ARG_TIMEOUT: - r = parse_sec(optarg, &arg_timeout); - if (r < 0) { - log_error("Failed to parse --timeout= parameter."); - return r; - } - - break; - - case ARG_AUGMENT_CREDS: - r = parse_boolean(optarg); - if (r < 0) { - log_error("Failed to parse --augment-creds= parameter."); - return r; - } - - arg_augment_creds = !!r; - break; - - case '?': - return -EINVAL; - - default: - assert_not_reached("Unhandled option"); - } - - return 1; -} - -static int busctl_main(sd_bus *bus, int argc, char *argv[]) { - assert(bus); - - if (optind >= argc || - streq(argv[optind], "list")) - return list_bus_names(bus, argv + optind); - - if (streq(argv[optind], "monitor")) - return monitor(bus, argv + optind, message_dump); - - if (streq(argv[optind], "capture")) - return capture(bus, argv + optind); - - if (streq(argv[optind], "status")) - return status(bus, argv + optind); - - if (streq(argv[optind], "tree")) - return tree(bus, argv + optind); - - if (streq(argv[optind], "introspect")) - return introspect(bus, argv + optind); - - if (streq(argv[optind], "call")) - return call(bus, argv + optind); - - if (streq(argv[optind], "get-property")) - return get_property(bus, argv + optind); - - if (streq(argv[optind], "set-property")) - return set_property(bus, argv + optind); - - if (streq(argv[optind], "help")) - return help(); - - log_error("Unknown command '%s'", argv[optind]); - return -EINVAL; -} - -int main(int argc, char *argv[]) { - _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; - int r; - - log_parse_environment(); - log_open(); - - r = parse_argv(argc, argv); - if (r <= 0) - goto finish; - - r = sd_bus_new(&bus); - if (r < 0) { - log_error_errno(r, "Failed to allocate bus: %m"); - goto finish; - } - - if (streq_ptr(argv[optind], "monitor") || - streq_ptr(argv[optind], "capture")) { - - r = sd_bus_set_monitor(bus, true); - if (r < 0) { - log_error_errno(r, "Failed to set monitor mode: %m"); - goto finish; - } - - r = sd_bus_negotiate_creds(bus, true, _SD_BUS_CREDS_ALL); - if (r < 0) { - log_error_errno(r, "Failed to enable credentials: %m"); - goto finish; - } - - r = sd_bus_negotiate_timestamp(bus, true); - if (r < 0) { - log_error_errno(r, "Failed to enable timestamps: %m"); - goto finish; - } - - r = sd_bus_negotiate_fds(bus, true); - if (r < 0) { - log_error_errno(r, "Failed to enable fds: %m"); - goto finish; - } - } - - r = sd_bus_set_bus_client(bus, true); - if (r < 0) { - log_error_errno(r, "Failed to set bus client: %m"); - goto finish; - } - - if (arg_address) - r = sd_bus_set_address(bus, arg_address); - else { - switch (arg_transport) { - - case BUS_TRANSPORT_LOCAL: - if (arg_user) { - bus->is_user = true; - r = bus_set_address_user(bus); - } else { - bus->is_system = true; - r = bus_set_address_system(bus); - } - break; - - case BUS_TRANSPORT_REMOTE: - r = bus_set_address_system_remote(bus, arg_host); - break; - - case BUS_TRANSPORT_MACHINE: - r = bus_set_address_system_machine(bus, arg_host); - break; - - default: - assert_not_reached("Hmm, unknown transport type."); - } - } - if (r < 0) { - log_error_errno(r, "Failed to set address: %m"); - goto finish; - } - - r = sd_bus_start(bus); - if (r < 0) { - log_error_errno(r, "Failed to connect to bus: %m"); - goto finish; - } - - r = busctl_main(bus, argc, argv); - -finish: - pager_close(); - - strv_free(arg_matches); - - return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; -} diff --git a/src/libsystemd/sd-bus/kdbus.h b/src/libsystemd/sd-bus/kdbus.h deleted file mode 100644 index ecffc6b13c..0000000000 --- a/src/libsystemd/sd-bus/kdbus.h +++ /dev/null @@ -1,980 +0,0 @@ -/* - * kdbus is free software; you can redistribute it and/or modify it under - * the terms of the GNU Lesser General Public License as published by the - * Free Software Foundation; either version 2.1 of the License, or (at - * your option) any later version. - */ - -#ifndef _UAPI_KDBUS_H_ -#define _UAPI_KDBUS_H_ - -#include <linux/ioctl.h> -#include <linux/types.h> - -#define KDBUS_IOCTL_MAGIC 0x95 -#define KDBUS_SRC_ID_KERNEL (0) -#define KDBUS_DST_ID_NAME (0) -#define KDBUS_MATCH_ID_ANY (~0ULL) -#define KDBUS_DST_ID_BROADCAST (~0ULL) -#define KDBUS_FLAG_NEGOTIATE (1ULL << 63) - -/** - * struct kdbus_notify_id_change - name registry change message - * @id: New or former owner of the name - * @flags: flags field from KDBUS_HELLO_* - * - * Sent from kernel to userspace when the owner or activator of - * a well-known name changes. - * - * Attached to: - * KDBUS_ITEM_ID_ADD - * KDBUS_ITEM_ID_REMOVE - */ -struct kdbus_notify_id_change { - __u64 id; - __u64 flags; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_notify_name_change - name registry change message - * @old_id: ID and flags of former owner of a name - * @new_id: ID and flags of new owner of a name - * @name: Well-known name - * - * Sent from kernel to userspace when the owner or activator of - * a well-known name changes. - * - * Attached to: - * KDBUS_ITEM_NAME_ADD - * KDBUS_ITEM_NAME_REMOVE - * KDBUS_ITEM_NAME_CHANGE - */ -struct kdbus_notify_name_change { - struct kdbus_notify_id_change old_id; - struct kdbus_notify_id_change new_id; - char name[0]; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_creds - process credentials - * @uid: User ID - * @euid: Effective UID - * @suid: Saved UID - * @fsuid: Filesystem UID - * @gid: Group ID - * @egid: Effective GID - * @sgid: Saved GID - * @fsgid: Filesystem GID - * - * Attached to: - * KDBUS_ITEM_CREDS - */ -struct kdbus_creds { - __u64 uid; - __u64 euid; - __u64 suid; - __u64 fsuid; - __u64 gid; - __u64 egid; - __u64 sgid; - __u64 fsgid; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_pids - process identifiers - * @pid: Process ID - * @tid: Thread ID - * @ppid: Parent process ID - * - * The PID and TID of a process. - * - * Attached to: - * KDBUS_ITEM_PIDS - */ -struct kdbus_pids { - __u64 pid; - __u64 tid; - __u64 ppid; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_caps - process capabilities - * @last_cap: Highest currently known capability bit - * @caps: Variable number of 32-bit capabilities flags - * - * Contains a variable number of 32-bit capabilities flags. - * - * Attached to: - * KDBUS_ITEM_CAPS - */ -struct kdbus_caps { - __u32 last_cap; - __u32 caps[0]; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_audit - audit information - * @sessionid: The audit session ID - * @loginuid: The audit login uid - * - * Attached to: - * KDBUS_ITEM_AUDIT - */ -struct kdbus_audit { - __u32 sessionid; - __u32 loginuid; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_timestamp - * @seqnum: Global per-domain message sequence number - * @monotonic_ns: Monotonic timestamp, in nanoseconds - * @realtime_ns: Realtime timestamp, in nanoseconds - * - * Attached to: - * KDBUS_ITEM_TIMESTAMP - */ -struct kdbus_timestamp { - __u64 seqnum; - __u64 monotonic_ns; - __u64 realtime_ns; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_vec - I/O vector for kdbus payload items - * @size: The size of the vector - * @address: Memory address of data buffer - * @offset: Offset in the in-message payload memory, - * relative to the message head - * - * Attached to: - * KDBUS_ITEM_PAYLOAD_VEC, KDBUS_ITEM_PAYLOAD_OFF - */ -struct kdbus_vec { - __u64 size; - union { - __u64 address; - __u64 offset; - }; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_bloom_parameter - bus-wide bloom parameters - * @size: Size of the bit field in bytes (m / 8) - * @n_hash: Number of hash functions used (k) - */ -struct kdbus_bloom_parameter { - __u64 size; - __u64 n_hash; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_bloom_filter - bloom filter containing n elements - * @generation: Generation of the element set in the filter - * @data: Bit field, multiple of 8 bytes - */ -struct kdbus_bloom_filter { - __u64 generation; - __u64 data[0]; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_memfd - a kdbus memfd - * @start: The offset into the memfd where the segment starts - * @size: The size of the memfd segment - * @fd: The file descriptor number - * @__pad: Padding to ensure proper alignment and size - * - * Attached to: - * KDBUS_ITEM_PAYLOAD_MEMFD - */ -struct kdbus_memfd { - __u64 start; - __u64 size; - int fd; - __u32 __pad; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_name - a registered well-known name with its flags - * @flags: Flags from KDBUS_NAME_* - * @name: Well-known name - * - * Attached to: - * KDBUS_ITEM_OWNED_NAME - */ -struct kdbus_name { - __u64 flags; - char name[0]; -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_policy_access_type - permissions of a policy record - * @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid - * @KDBUS_POLICY_ACCESS_USER: Grant access to a uid - * @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid - * @KDBUS_POLICY_ACCESS_WORLD: World-accessible - */ -enum kdbus_policy_access_type { - _KDBUS_POLICY_ACCESS_NULL, - KDBUS_POLICY_ACCESS_USER, - KDBUS_POLICY_ACCESS_GROUP, - KDBUS_POLICY_ACCESS_WORLD, -}; - -/** - * enum kdbus_policy_access_flags - mode flags - * @KDBUS_POLICY_OWN: Allow to own a well-known name - * Implies KDBUS_POLICY_TALK and KDBUS_POLICY_SEE - * @KDBUS_POLICY_TALK: Allow communication to a well-known name - * Implies KDBUS_POLICY_SEE - * @KDBUS_POLICY_SEE: Allow to see a well-known name - */ -enum kdbus_policy_type { - KDBUS_POLICY_SEE = 0, - KDBUS_POLICY_TALK, - KDBUS_POLICY_OWN, -}; - -/** - * struct kdbus_policy_access - policy access item - * @type: One of KDBUS_POLICY_ACCESS_* types - * @access: Access to grant - * @id: For KDBUS_POLICY_ACCESS_USER, the uid - * For KDBUS_POLICY_ACCESS_GROUP, the gid - */ -struct kdbus_policy_access { - __u64 type; /* USER, GROUP, WORLD */ - __u64 access; /* OWN, TALK, SEE */ - __u64 id; /* uid, gid, 0 */ -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_attach_flags - flags for metadata attachments - * @KDBUS_ATTACH_TIMESTAMP: Timestamp - * @KDBUS_ATTACH_CREDS: Credentials - * @KDBUS_ATTACH_PIDS: PIDs - * @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups - * @KDBUS_ATTACH_NAMES: Well-known names - * @KDBUS_ATTACH_TID_COMM: The "comm" process identifier of the TID - * @KDBUS_ATTACH_PID_COMM: The "comm" process identifier of the PID - * @KDBUS_ATTACH_EXE: The path of the executable - * @KDBUS_ATTACH_CMDLINE: The process command line - * @KDBUS_ATTACH_CGROUP: The croup membership - * @KDBUS_ATTACH_CAPS: The process capabilities - * @KDBUS_ATTACH_SECLABEL: The security label - * @KDBUS_ATTACH_AUDIT: The audit IDs - * @KDBUS_ATTACH_CONN_DESCRIPTION: The human-readable connection name - * @_KDBUS_ATTACH_ALL: All of the above - * @_KDBUS_ATTACH_ANY: Wildcard match to enable any kind of - * metatdata. - */ -enum kdbus_attach_flags { - KDBUS_ATTACH_TIMESTAMP = 1ULL << 0, - KDBUS_ATTACH_CREDS = 1ULL << 1, - KDBUS_ATTACH_PIDS = 1ULL << 2, - KDBUS_ATTACH_AUXGROUPS = 1ULL << 3, - KDBUS_ATTACH_NAMES = 1ULL << 4, - KDBUS_ATTACH_TID_COMM = 1ULL << 5, - KDBUS_ATTACH_PID_COMM = 1ULL << 6, - KDBUS_ATTACH_EXE = 1ULL << 7, - KDBUS_ATTACH_CMDLINE = 1ULL << 8, - KDBUS_ATTACH_CGROUP = 1ULL << 9, - KDBUS_ATTACH_CAPS = 1ULL << 10, - KDBUS_ATTACH_SECLABEL = 1ULL << 11, - KDBUS_ATTACH_AUDIT = 1ULL << 12, - KDBUS_ATTACH_CONN_DESCRIPTION = 1ULL << 13, - _KDBUS_ATTACH_ALL = (1ULL << 14) - 1, - _KDBUS_ATTACH_ANY = ~0ULL -}; - -/** - * enum kdbus_item_type - item types to chain data in a list - * @_KDBUS_ITEM_NULL: Uninitialized/invalid - * @_KDBUS_ITEM_USER_BASE: Start of user items - * @KDBUS_ITEM_NEGOTIATE: Negotiate supported items - * @KDBUS_ITEM_PAYLOAD_VEC: Vector to data - * @KDBUS_ITEM_PAYLOAD_OFF: Data at returned offset to message head - * @KDBUS_ITEM_PAYLOAD_MEMFD: Data as sealed memfd - * @KDBUS_ITEM_FDS: Attached file descriptors - * @KDBUS_ITEM_CANCEL_FD: FD used to cancel a synchronous - * operation by writing to it from - * userspace - * @KDBUS_ITEM_BLOOM_PARAMETER: Bus-wide bloom parameters, used with - * KDBUS_CMD_BUS_MAKE, carries a - * struct kdbus_bloom_parameter - * @KDBUS_ITEM_BLOOM_FILTER: Bloom filter carried with a message, - * used to match against a bloom mask of a - * connection, carries a struct - * kdbus_bloom_filter - * @KDBUS_ITEM_BLOOM_MASK: Bloom mask used to match against a - * message'sbloom filter - * @KDBUS_ITEM_DST_NAME: Destination's well-known name - * @KDBUS_ITEM_MAKE_NAME: Name of domain, bus, endpoint - * @KDBUS_ITEM_ATTACH_FLAGS_SEND: Attach-flags, used for updating which - * metadata a connection opts in to send - * @KDBUS_ITEM_ATTACH_FLAGS_RECV: Attach-flags, used for updating which - * metadata a connection requests to - * receive for each reeceived message - * @KDBUS_ITEM_ID: Connection ID - * @KDBUS_ITEM_NAME: Well-know name with flags - * @_KDBUS_ITEM_ATTACH_BASE: Start of metadata attach items - * @KDBUS_ITEM_TIMESTAMP: Timestamp - * @KDBUS_ITEM_CREDS: Process credentials - * @KDBUS_ITEM_PIDS: Process identifiers - * @KDBUS_ITEM_AUXGROUPS: Auxiliary process groups - * @KDBUS_ITEM_OWNED_NAME: A name owned by the associated - * connection - * @KDBUS_ITEM_TID_COMM: Thread ID "comm" identifier - * (Don't trust this, see below.) - * @KDBUS_ITEM_PID_COMM: Process ID "comm" identifier - * (Don't trust this, see below.) - * @KDBUS_ITEM_EXE: The path of the executable - * (Don't trust this, see below.) - * @KDBUS_ITEM_CMDLINE: The process command line - * (Don't trust this, see below.) - * @KDBUS_ITEM_CGROUP: The croup membership - * @KDBUS_ITEM_CAPS: The process capabilities - * @KDBUS_ITEM_SECLABEL: The security label - * @KDBUS_ITEM_AUDIT: The audit IDs - * @KDBUS_ITEM_CONN_DESCRIPTION: The connection's human-readable name - * (debugging) - * @_KDBUS_ITEM_POLICY_BASE: Start of policy items - * @KDBUS_ITEM_POLICY_ACCESS: Policy access block - * @_KDBUS_ITEM_KERNEL_BASE: Start of kernel-generated message items - * @KDBUS_ITEM_NAME_ADD: Notification in kdbus_notify_name_change - * @KDBUS_ITEM_NAME_REMOVE: Notification in kdbus_notify_name_change - * @KDBUS_ITEM_NAME_CHANGE: Notification in kdbus_notify_name_change - * @KDBUS_ITEM_ID_ADD: Notification in kdbus_notify_id_change - * @KDBUS_ITEM_ID_REMOVE: Notification in kdbus_notify_id_change - * @KDBUS_ITEM_REPLY_TIMEOUT: Timeout has been reached - * @KDBUS_ITEM_REPLY_DEAD: Destination died - * - * N.B: The process and thread COMM fields, as well as the CMDLINE and - * EXE fields may be altered by unprivileged processes und should - * hence *not* used for security decisions. Peers should make use of - * these items only for informational purposes, such as generating log - * records. - */ -enum kdbus_item_type { - _KDBUS_ITEM_NULL, - _KDBUS_ITEM_USER_BASE, - KDBUS_ITEM_NEGOTIATE = _KDBUS_ITEM_USER_BASE, - KDBUS_ITEM_PAYLOAD_VEC, - KDBUS_ITEM_PAYLOAD_OFF, - KDBUS_ITEM_PAYLOAD_MEMFD, - KDBUS_ITEM_FDS, - KDBUS_ITEM_CANCEL_FD, - KDBUS_ITEM_BLOOM_PARAMETER, - KDBUS_ITEM_BLOOM_FILTER, - KDBUS_ITEM_BLOOM_MASK, - KDBUS_ITEM_DST_NAME, - KDBUS_ITEM_MAKE_NAME, - KDBUS_ITEM_ATTACH_FLAGS_SEND, - KDBUS_ITEM_ATTACH_FLAGS_RECV, - KDBUS_ITEM_ID, - KDBUS_ITEM_NAME, - KDBUS_ITEM_DST_ID, - - /* keep these item types in sync with KDBUS_ATTACH_* flags */ - _KDBUS_ITEM_ATTACH_BASE = 0x1000, - KDBUS_ITEM_TIMESTAMP = _KDBUS_ITEM_ATTACH_BASE, - KDBUS_ITEM_CREDS, - KDBUS_ITEM_PIDS, - KDBUS_ITEM_AUXGROUPS, - KDBUS_ITEM_OWNED_NAME, - KDBUS_ITEM_TID_COMM, - KDBUS_ITEM_PID_COMM, - KDBUS_ITEM_EXE, - KDBUS_ITEM_CMDLINE, - KDBUS_ITEM_CGROUP, - KDBUS_ITEM_CAPS, - KDBUS_ITEM_SECLABEL, - KDBUS_ITEM_AUDIT, - KDBUS_ITEM_CONN_DESCRIPTION, - - _KDBUS_ITEM_POLICY_BASE = 0x2000, - KDBUS_ITEM_POLICY_ACCESS = _KDBUS_ITEM_POLICY_BASE, - - _KDBUS_ITEM_KERNEL_BASE = 0x8000, - KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE, - KDBUS_ITEM_NAME_REMOVE, - KDBUS_ITEM_NAME_CHANGE, - KDBUS_ITEM_ID_ADD, - KDBUS_ITEM_ID_REMOVE, - KDBUS_ITEM_REPLY_TIMEOUT, - KDBUS_ITEM_REPLY_DEAD, -}; - -/** - * struct kdbus_item - chain of data blocks - * @size: Overall data record size - * @type: Kdbus_item type of data - * @data: Generic bytes - * @data32: Generic 32 bit array - * @data64: Generic 64 bit array - * @str: Generic string - * @id: Connection ID - * @vec: KDBUS_ITEM_PAYLOAD_VEC - * @creds: KDBUS_ITEM_CREDS - * @audit: KDBUS_ITEM_AUDIT - * @timestamp: KDBUS_ITEM_TIMESTAMP - * @name: KDBUS_ITEM_NAME - * @bloom_parameter: KDBUS_ITEM_BLOOM_PARAMETER - * @bloom_filter: KDBUS_ITEM_BLOOM_FILTER - * @memfd: KDBUS_ITEM_PAYLOAD_MEMFD - * @name_change: KDBUS_ITEM_NAME_ADD - * KDBUS_ITEM_NAME_REMOVE - * KDBUS_ITEM_NAME_CHANGE - * @id_change: KDBUS_ITEM_ID_ADD - * KDBUS_ITEM_ID_REMOVE - * @policy: KDBUS_ITEM_POLICY_ACCESS - */ -struct kdbus_item { - __u64 size; - __u64 type; - union { - __u8 data[0]; - __u32 data32[0]; - __u64 data64[0]; - char str[0]; - - __u64 id; - struct kdbus_vec vec; - struct kdbus_creds creds; - struct kdbus_pids pids; - struct kdbus_audit audit; - struct kdbus_caps caps; - struct kdbus_timestamp timestamp; - struct kdbus_name name; - struct kdbus_bloom_parameter bloom_parameter; - struct kdbus_bloom_filter bloom_filter; - struct kdbus_memfd memfd; - int fds[0]; - struct kdbus_notify_name_change name_change; - struct kdbus_notify_id_change id_change; - struct kdbus_policy_access policy_access; - }; -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_msg_flags - type of message - * @KDBUS_MSG_EXPECT_REPLY: Expect a reply message, used for - * method calls. The userspace-supplied - * cookie identifies the message and the - * respective reply carries the cookie - * in cookie_reply - * @KDBUS_MSG_NO_AUTO_START: Do not start a service if the addressed - * name is not currently active. This flag is - * not looked at by the kernel but only - * serves as hint for userspace implementations. - * @KDBUS_MSG_SIGNAL: Treat this message as signal - */ -enum kdbus_msg_flags { - KDBUS_MSG_EXPECT_REPLY = 1ULL << 0, - KDBUS_MSG_NO_AUTO_START = 1ULL << 1, - KDBUS_MSG_SIGNAL = 1ULL << 2, -}; - -/** - * enum kdbus_payload_type - type of payload carried by message - * @KDBUS_PAYLOAD_KERNEL: Kernel-generated simple message - * @KDBUS_PAYLOAD_DBUS: D-Bus marshalling "DBusDBus" - * - * Any payload-type is accepted. Common types will get added here once - * established. - */ -enum kdbus_payload_type { - KDBUS_PAYLOAD_KERNEL, - KDBUS_PAYLOAD_DBUS = 0x4442757344427573ULL, -}; - -/** - * struct kdbus_msg - the representation of a kdbus message - * @size: Total size of the message - * @flags: Message flags (KDBUS_MSG_*), userspace → kernel - * @priority: Message queue priority value - * @dst_id: 64-bit ID of the destination connection - * @src_id: 64-bit ID of the source connection - * @payload_type: Payload type (KDBUS_PAYLOAD_*) - * @cookie: Userspace-supplied cookie, for the connection - * to identify its messages - * @timeout_ns: The time to wait for a message reply from the peer. - * If there is no reply, and the send command is - * executed asynchronously, a kernel-generated message - * with an attached KDBUS_ITEM_REPLY_TIMEOUT item - * is sent to @src_id. For synchronously executed send - * command, the value denotes the maximum time the call - * blocks to wait for a reply. The timeout is expected in - * nanoseconds and as absolute CLOCK_MONOTONIC value. - * @cookie_reply: A reply to the requesting message with the same - * cookie. The requesting connection can match its - * request and the reply with this value - * @items: A list of kdbus_items containing the message payload - */ -struct kdbus_msg { - __u64 size; - __u64 flags; - __s64 priority; - __u64 dst_id; - __u64 src_id; - __u64 payload_type; - __u64 cookie; - union { - __u64 timeout_ns; - __u64 cookie_reply; - }; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_msg_info - returned message container - * @offset: Offset of kdbus_msg slice in pool - * @msg_size: Copy of the kdbus_msg.size field - * @return_flags: Command return flags, kernel → userspace - */ -struct kdbus_msg_info { - __u64 offset; - __u64 msg_size; - __u64 return_flags; -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_send_flags - flags for sending messages - * @KDBUS_SEND_SYNC_REPLY: Wait for destination connection to - * reply to this message. The - * KDBUS_CMD_SEND ioctl() will block - * until the reply is received, and - * reply in struct kdbus_cmd_send will - * yield the offset in the sender's pool - * where the reply can be found. - * This flag is only valid if - * @KDBUS_MSG_EXPECT_REPLY is set as well. - */ -enum kdbus_send_flags { - KDBUS_SEND_SYNC_REPLY = 1ULL << 0, -}; - -/** - * struct kdbus_cmd_send - send message - * @size: Overall size of this structure - * @flags: Flags to change send behavior (KDBUS_SEND_*) - * @return_flags: Command return flags, kernel → userspace - * @msg_address: Storage address of the kdbus_msg to send - * @reply: Storage for message reply if KDBUS_SEND_SYNC_REPLY - * was given - * @items: Additional items for this command - */ -struct kdbus_cmd_send { - __u64 size; - __u64 flags; - __u64 return_flags; - __u64 msg_address; - struct kdbus_msg_info reply; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_recv_flags - flags for de-queuing messages - * @KDBUS_RECV_PEEK: Return the next queued message without - * actually de-queuing it, and without installing - * any file descriptors or other resources. It is - * usually used to determine the activating - * connection of a bus name. - * @KDBUS_RECV_DROP: Drop and free the next queued message and all - * its resources without actually receiving it. - * @KDBUS_RECV_USE_PRIORITY: Only de-queue messages with the specified or - * higher priority (lowest values); if not set, - * the priority value is ignored. - */ -enum kdbus_recv_flags { - KDBUS_RECV_PEEK = 1ULL << 0, - KDBUS_RECV_DROP = 1ULL << 1, - KDBUS_RECV_USE_PRIORITY = 1ULL << 2, -}; - -/** - * enum kdbus_recv_return_flags - return flags for message receive commands - * @KDBUS_RECV_RETURN_INCOMPLETE_FDS: One or more file descriptors could not - * be installed. These descriptors in - * KDBUS_ITEM_FDS will carry the value -1. - * @KDBUS_RECV_RETURN_DROPPED_MSGS: There have been dropped messages since - * the last time a message was received. - * The 'dropped_msgs' counter contains the - * number of messages dropped pool - * overflows or other missed broadcasts. - */ -enum kdbus_recv_return_flags { - KDBUS_RECV_RETURN_INCOMPLETE_FDS = 1ULL << 0, - KDBUS_RECV_RETURN_DROPPED_MSGS = 1ULL << 1, -}; - -/** - * struct kdbus_cmd_recv - struct to de-queue a buffered message - * @size: Overall size of this object - * @flags: KDBUS_RECV_* flags, userspace → kernel - * @return_flags: Command return flags, kernel → userspace - * @priority: Minimum priority of the messages to de-queue. Lowest - * values have the highest priority. - * @dropped_msgs: In case there were any dropped messages since the last - * time a message was received, this will be set to the - * number of lost messages and - * KDBUS_RECV_RETURN_DROPPED_MSGS will be set in - * 'return_flags'. This can only happen if the ioctl - * returns 0 or EAGAIN. - * @msg: Return storage for received message. - * @items: Additional items for this command. - * - * This struct is used with the KDBUS_CMD_RECV ioctl. - */ -struct kdbus_cmd_recv { - __u64 size; - __u64 flags; - __u64 return_flags; - __s64 priority; - __u64 dropped_msgs; - struct kdbus_msg_info msg; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_cmd_free - struct to free a slice of memory in the pool - * @size: Overall size of this structure - * @flags: Flags for the free command, userspace → kernel - * @return_flags: Command return flags, kernel → userspace - * @offset: The offset of the memory slice, as returned by other - * ioctls - * @items: Additional items to modify the behavior - * - * This struct is used with the KDBUS_CMD_FREE ioctl. - */ -struct kdbus_cmd_free { - __u64 size; - __u64 flags; - __u64 return_flags; - __u64 offset; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_hello_flags - flags for struct kdbus_cmd_hello - * @KDBUS_HELLO_ACCEPT_FD: The connection allows the reception of - * any passed file descriptors - * @KDBUS_HELLO_ACTIVATOR: Special-purpose connection which registers - * a well-know name for a process to be started - * when traffic arrives - * @KDBUS_HELLO_POLICY_HOLDER: Special-purpose connection which registers - * policy entries for a name. The provided name - * is not activated and not registered with the - * name database, it only allows unprivileged - * connections to acquire a name, talk or discover - * a service - * @KDBUS_HELLO_MONITOR: Special-purpose connection to monitor - * bus traffic - */ -enum kdbus_hello_flags { - KDBUS_HELLO_ACCEPT_FD = 1ULL << 0, - KDBUS_HELLO_ACTIVATOR = 1ULL << 1, - KDBUS_HELLO_POLICY_HOLDER = 1ULL << 2, - KDBUS_HELLO_MONITOR = 1ULL << 3, -}; - -/** - * struct kdbus_cmd_hello - struct to say hello to kdbus - * @size: The total size of the structure - * @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel - * @return_flags: Command return flags, kernel → userspace - * @attach_flags_send: Mask of metadata to attach to each message sent - * off by this connection (KDBUS_ATTACH_*) - * @attach_flags_recv: Mask of metadata to attach to each message receieved - * by the new connection (KDBUS_ATTACH_*) - * @bus_flags: The flags field copied verbatim from the original - * KDBUS_CMD_BUS_MAKE ioctl. It's intended to be useful - * to do negotiation of features of the payload that is - * transferred (kernel → userspace) - * @id: The ID of this connection (kernel → userspace) - * @pool_size: Size of the connection's buffer where the received - * messages are placed - * @offset: Pool offset where items are returned to report - * additional information about the bus and the newly - * created connection. - * @items_size: Size of buffer returned in the pool slice at @offset. - * @id128: Unique 128-bit ID of the bus (kernel → userspace) - * @items: A list of items - * - * This struct is used with the KDBUS_CMD_HELLO ioctl. - */ -struct kdbus_cmd_hello { - __u64 size; - __u64 flags; - __u64 return_flags; - __u64 attach_flags_send; - __u64 attach_flags_recv; - __u64 bus_flags; - __u64 id; - __u64 pool_size; - __u64 offset; - __u64 items_size; - __u8 id128[16]; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_info - connection information - * @size: total size of the struct - * @id: 64bit object ID - * @flags: object creation flags - * @items: list of items - * - * Note that the user is responsible for freeing the allocated memory with - * the KDBUS_CMD_FREE ioctl. - */ -struct kdbus_info { - __u64 size; - __u64 id; - __u64 flags; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_list_flags - what to include into the returned list - * @KDBUS_LIST_UNIQUE: active connections - * @KDBUS_LIST_ACTIVATORS: activator connections - * @KDBUS_LIST_NAMES: known well-known names - * @KDBUS_LIST_QUEUED: queued-up names - */ -enum kdbus_list_flags { - KDBUS_LIST_UNIQUE = 1ULL << 0, - KDBUS_LIST_NAMES = 1ULL << 1, - KDBUS_LIST_ACTIVATORS = 1ULL << 2, - KDBUS_LIST_QUEUED = 1ULL << 3, -}; - -/** - * struct kdbus_cmd_list - list connections - * @size: overall size of this object - * @flags: flags for the query (KDBUS_LIST_*), userspace → kernel - * @return_flags: command return flags, kernel → userspace - * @offset: Offset in the caller's pool buffer where an array of - * kdbus_info objects is stored. - * The user must use KDBUS_CMD_FREE to free the - * allocated memory. - * @list_size: size of returned list in bytes - * @items: Items for the command. Reserved for future use. - * - * This structure is used with the KDBUS_CMD_LIST ioctl. - */ -struct kdbus_cmd_list { - __u64 size; - __u64 flags; - __u64 return_flags; - __u64 offset; - __u64 list_size; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * struct kdbus_cmd_info - struct used for KDBUS_CMD_CONN_INFO ioctl - * @size: The total size of the struct - * @flags: Flags for this ioctl, userspace → kernel - * @return_flags: Command return flags, kernel → userspace - * @id: The 64-bit ID of the connection. If set to zero, passing - * @name is required. kdbus will look up the name to - * determine the ID in this case. - * @attach_flags: Set of attach flags to specify the set of information - * to receive, userspace → kernel - * @offset: Returned offset in the caller's pool buffer where the - * kdbus_info struct result is stored. The user must - * use KDBUS_CMD_FREE to free the allocated memory. - * @info_size: Output buffer to report size of data at @offset. - * @items: The optional item list, containing the - * well-known name to look up as a KDBUS_ITEM_NAME. - * Only needed in case @id is zero. - * - * On success, the KDBUS_CMD_CONN_INFO ioctl will return 0 and @offset will - * tell the user the offset in the connection pool buffer at which to find the - * result in a struct kdbus_info. - */ -struct kdbus_cmd_info { - __u64 size; - __u64 flags; - __u64 return_flags; - __u64 id; - __u64 attach_flags; - __u64 offset; - __u64 info_size; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_cmd_match_flags - flags to control the KDBUS_CMD_MATCH_ADD ioctl - * @KDBUS_MATCH_REPLACE: If entries with the supplied cookie already - * exists, remove them before installing the new - * matches. - */ -enum kdbus_cmd_match_flags { - KDBUS_MATCH_REPLACE = 1ULL << 0, -}; - -/** - * struct kdbus_cmd_match - struct to add or remove matches - * @size: The total size of the struct - * @flags: Flags for match command (KDBUS_MATCH_*), - * userspace → kernel - * @return_flags: Command return flags, kernel → userspace - * @cookie: Userspace supplied cookie. When removing, the cookie - * identifies the match to remove - * @items: A list of items for additional information - * - * This structure is used with the KDBUS_CMD_MATCH_ADD and - * KDBUS_CMD_MATCH_REMOVE ioctl. - */ -struct kdbus_cmd_match { - __u64 size; - __u64 flags; - __u64 return_flags; - __u64 cookie; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,ENDPOINT}_MAKE - * @KDBUS_MAKE_ACCESS_GROUP: Make the bus or endpoint node group-accessible - * @KDBUS_MAKE_ACCESS_WORLD: Make the bus or endpoint node world-accessible - */ -enum kdbus_make_flags { - KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0, - KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1, -}; - -/** - * enum kdbus_name_flags - flags for KDBUS_CMD_NAME_ACQUIRE - * @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections - * @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name - * @KDBUS_NAME_QUEUE: Name should be queued if busy - * @KDBUS_NAME_IN_QUEUE: Name is queued - * @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection - */ -enum kdbus_name_flags { - KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0, - KDBUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1, - KDBUS_NAME_QUEUE = 1ULL << 2, - KDBUS_NAME_IN_QUEUE = 1ULL << 3, - KDBUS_NAME_ACTIVATOR = 1ULL << 4, -}; - -/** - * struct kdbus_cmd - generic ioctl payload - * @size: Overall size of this structure - * @flags: Flags for this ioctl, userspace → kernel - * @return_flags: Ioctl return flags, kernel → userspace - * @items: Additional items to modify the behavior - * - * This is a generic ioctl payload object. It's used by all ioctls that only - * take flags and items as input. - */ -struct kdbus_cmd { - __u64 size; - __u64 flags; - __u64 return_flags; - struct kdbus_item items[0]; -} __attribute__((__aligned__(8))); - -/** - * Ioctl API - * - * KDBUS_CMD_BUS_MAKE: After opening the "control" node, this command - * creates a new bus with the specified - * name. The bus is immediately shut down and - * cleaned up when the opened file descriptor is - * closed. - * - * KDBUS_CMD_ENDPOINT_MAKE: Creates a new named special endpoint to talk to - * the bus. Such endpoints usually carry a more - * restrictive policy and grant restricted access - * to specific applications. - * KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used - * to update the policy. - * - * KDBUS_CMD_HELLO: By opening the bus node, a connection is - * created. After a HELLO the opened connection - * becomes an active peer on the bus. - * KDBUS_CMD_UPDATE: Update the properties of a connection. Used to - * update the metadata subscription mask and - * policy. - * KDBUS_CMD_BYEBYE: Disconnect a connection. If there are no - * messages queued up in the connection's pool, - * the call succeeds, and the handle is rendered - * unusable. Otherwise, -EBUSY is returned without - * any further side-effects. - * KDBUS_CMD_FREE: Release the allocated memory in the receiver's - * pool. - * KDBUS_CMD_CONN_INFO: Retrieve credentials and properties of the - * initial creator of the connection. The data was - * stored at registration time and does not - * necessarily represent the connected process or - * the actual state of the process. - * KDBUS_CMD_BUS_CREATOR_INFO: Retrieve information of the creator of the bus - * a connection is attached to. - * - * KDBUS_CMD_SEND: Send a message and pass data from userspace to - * the kernel. - * KDBUS_CMD_RECV: Receive a message from the kernel which is - * placed in the receiver's pool. - * - * KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with - * the connection. Well-known names are used to - * address a peer on the bus. - * KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection - * currently owns. - * KDBUS_CMD_LIST: Retrieve the list of all currently registered - * well-known and unique names. - * - * KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should - * be delivered to the connection. - * KDBUS_CMD_MATCH_REMOVE: Remove a current match for broadcast messages. - */ -enum kdbus_ioctl_type { - /* bus owner (00-0f) */ - KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x00, - struct kdbus_cmd), - - /* endpoint owner (10-1f) */ - KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10, - struct kdbus_cmd), - KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x11, - struct kdbus_cmd), - - /* connection owner (80-ff) */ - KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x80, - struct kdbus_cmd_hello), - KDBUS_CMD_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x81, - struct kdbus_cmd), - KDBUS_CMD_BYEBYE = _IOW(KDBUS_IOCTL_MAGIC, 0x82, - struct kdbus_cmd), - KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x83, - struct kdbus_cmd_free), - KDBUS_CMD_CONN_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x84, - struct kdbus_cmd_info), - KDBUS_CMD_BUS_CREATOR_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x85, - struct kdbus_cmd_info), - KDBUS_CMD_LIST = _IOR(KDBUS_IOCTL_MAGIC, 0x86, - struct kdbus_cmd_list), - - KDBUS_CMD_SEND = _IOW(KDBUS_IOCTL_MAGIC, 0x90, - struct kdbus_cmd_send), - KDBUS_CMD_RECV = _IOR(KDBUS_IOCTL_MAGIC, 0x91, - struct kdbus_cmd_recv), - - KDBUS_CMD_NAME_ACQUIRE = _IOW(KDBUS_IOCTL_MAGIC, 0xa0, - struct kdbus_cmd), - KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0xa1, - struct kdbus_cmd), - - KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0xb0, - struct kdbus_cmd_match), - KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0xb1, - struct kdbus_cmd_match), -}; - -#endif /* _UAPI_KDBUS_H_ */ diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c deleted file mode 100644 index c6f626d8aa..0000000000 --- a/src/libsystemd/sd-bus/sd-bus.c +++ /dev/null @@ -1,3794 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <endian.h> -#include <netdb.h> -#include <poll.h> -#include <pthread.h> -#include <stdlib.h> -#include <sys/mman.h> -#include <unistd.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-container.h" -#include "bus-control.h" -#include "bus-internal.h" -#include "bus-kernel.h" -#include "bus-label.h" -#include "bus-message.h" -#include "bus-objects.h" -#include "bus-protocol.h" -#include "bus-slot.h" -#include "bus-socket.h" -#include "bus-track.h" -#include "bus-type.h" -#include "bus-util.h" -#include "cgroup-util.h" -#include "def.h" -#include "fd-util.h" -#include "hexdecoct.h" -#include "hostname-util.h" -#include "macro.h" -#include "missing.h" -#include "parse-util.h" -#include "string-util.h" -#include "strv.h" -#include "util.h" - -#define log_debug_bus_message(m) \ - do { \ - sd_bus_message *_mm = (m); \ - log_debug("Got message type=%s sender=%s destination=%s object=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " error=%s", \ - bus_message_type_to_string(_mm->header->type), \ - strna(sd_bus_message_get_sender(_mm)), \ - strna(sd_bus_message_get_destination(_mm)), \ - strna(sd_bus_message_get_path(_mm)), \ - strna(sd_bus_message_get_interface(_mm)), \ - strna(sd_bus_message_get_member(_mm)), \ - BUS_MESSAGE_COOKIE(_mm), \ - _mm->reply_cookie, \ - strna(_mm->error.message)); \ - } while (false) - -static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec); -static int attach_io_events(sd_bus *b); -static void detach_io_events(sd_bus *b); - -static thread_local sd_bus *default_system_bus = NULL; -static thread_local sd_bus *default_user_bus = NULL; -static thread_local sd_bus *default_starter_bus = NULL; - -static void bus_close_fds(sd_bus *b) { - assert(b); - - detach_io_events(b); - - if (b->input_fd != b->output_fd) - safe_close(b->output_fd); - b->output_fd = b->input_fd = safe_close(b->input_fd); -} - -static void bus_reset_queues(sd_bus *b) { - assert(b); - - while (b->rqueue_size > 0) - sd_bus_message_unref(b->rqueue[--b->rqueue_size]); - - b->rqueue = mfree(b->rqueue); - b->rqueue_allocated = 0; - - while (b->wqueue_size > 0) - sd_bus_message_unref(b->wqueue[--b->wqueue_size]); - - b->wqueue = mfree(b->wqueue); - b->wqueue_allocated = 0; -} - -static void bus_free(sd_bus *b) { - sd_bus_slot *s; - - assert(b); - assert(!b->track_queue); - - b->state = BUS_CLOSED; - - sd_bus_detach_event(b); - - while ((s = b->slots)) { - /* At this point only floating slots can still be - * around, because the non-floating ones keep a - * reference to the bus, and we thus couldn't be - * destructing right now... We forcibly disconnect the - * slots here, so that they still can be referenced by - * apps, but are dead. */ - - assert(s->floating); - bus_slot_disconnect(s); - sd_bus_slot_unref(s); - } - - if (b->default_bus_ptr) - *b->default_bus_ptr = NULL; - - bus_close_fds(b); - - if (b->kdbus_buffer) - munmap(b->kdbus_buffer, KDBUS_POOL_SIZE); - - free(b->label); - free(b->rbuffer); - free(b->unique_name); - free(b->auth_buffer); - free(b->address); - free(b->kernel); - free(b->machine); - free(b->fake_label); - free(b->cgroup_root); - free(b->description); - - free(b->exec_path); - strv_free(b->exec_argv); - - close_many(b->fds, b->n_fds); - free(b->fds); - - bus_reset_queues(b); - - ordered_hashmap_free_free(b->reply_callbacks); - prioq_free(b->reply_callbacks_prioq); - - assert(b->match_callbacks.type == BUS_MATCH_ROOT); - bus_match_free(&b->match_callbacks); - - hashmap_free_free(b->vtable_methods); - hashmap_free_free(b->vtable_properties); - - assert(hashmap_isempty(b->nodes)); - hashmap_free(b->nodes); - - bus_kernel_flush_memfd(b); - - assert_se(pthread_mutex_destroy(&b->memfd_cache_mutex) == 0); - - free(b); -} - -_public_ int sd_bus_new(sd_bus **ret) { - sd_bus *r; - - assert_return(ret, -EINVAL); - - r = new0(sd_bus, 1); - if (!r) - return -ENOMEM; - - r->n_ref = REFCNT_INIT; - r->input_fd = r->output_fd = -1; - r->message_version = 1; - r->creds_mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_UNIQUE_NAME; - r->hello_flags |= KDBUS_HELLO_ACCEPT_FD; - r->attach_flags |= KDBUS_ATTACH_NAMES; - r->original_pid = getpid(); - - assert_se(pthread_mutex_init(&r->memfd_cache_mutex, NULL) == 0); - - /* We guarantee that wqueue always has space for at least one - * entry */ - if (!GREEDY_REALLOC(r->wqueue, r->wqueue_allocated, 1)) { - free(r); - return -ENOMEM; - } - - *ret = r; - return 0; -} - -_public_ int sd_bus_set_address(sd_bus *bus, const char *address) { - char *a; - - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(address, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - a = strdup(address); - if (!a) - return -ENOMEM; - - free(bus->address); - bus->address = a; - - return 0; -} - -_public_ int sd_bus_set_fd(sd_bus *bus, int input_fd, int output_fd) { - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(input_fd >= 0, -EBADF); - assert_return(output_fd >= 0, -EBADF); - assert_return(!bus_pid_changed(bus), -ECHILD); - - bus->input_fd = input_fd; - bus->output_fd = output_fd; - return 0; -} - -_public_ int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]) { - char *p, **a; - - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(path, -EINVAL); - assert_return(!strv_isempty(argv), -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - p = strdup(path); - if (!p) - return -ENOMEM; - - a = strv_copy(argv); - if (!a) { - free(p); - return -ENOMEM; - } - - free(bus->exec_path); - strv_free(bus->exec_argv); - - bus->exec_path = p; - bus->exec_argv = a; - - return 0; -} - -_public_ int sd_bus_set_bus_client(sd_bus *bus, int b) { - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - bus->bus_client = !!b; - return 0; -} - -_public_ int sd_bus_set_monitor(sd_bus *bus, int b) { - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - SET_FLAG(bus->hello_flags, KDBUS_HELLO_MONITOR, b); - return 0; -} - -_public_ int sd_bus_negotiate_fds(sd_bus *bus, int b) { - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - SET_FLAG(bus->hello_flags, KDBUS_HELLO_ACCEPT_FD, b); - return 0; -} - -_public_ int sd_bus_negotiate_timestamp(sd_bus *bus, int b) { - uint64_t new_flags; - assert_return(bus, -EINVAL); - assert_return(!IN_SET(bus->state, BUS_CLOSING, BUS_CLOSED), -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - new_flags = bus->attach_flags; - SET_FLAG(new_flags, KDBUS_ATTACH_TIMESTAMP, b); - - if (bus->attach_flags == new_flags) - return 0; - - bus->attach_flags = new_flags; - if (bus->state != BUS_UNSET && bus->is_kernel) - bus_kernel_realize_attach_flags(bus); - - return 0; -} - -_public_ int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t mask) { - uint64_t new_flags; - - assert_return(bus, -EINVAL); - assert_return(mask <= _SD_BUS_CREDS_ALL, -EINVAL); - assert_return(!IN_SET(bus->state, BUS_CLOSING, BUS_CLOSED), -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (b) - bus->creds_mask |= mask; - else - bus->creds_mask &= ~mask; - - /* The well knowns we need unconditionally, so that matches can work */ - bus->creds_mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_UNIQUE_NAME; - - /* Make sure we don't lose the timestamp flag */ - new_flags = (bus->attach_flags & KDBUS_ATTACH_TIMESTAMP) | attach_flags_to_kdbus(bus->creds_mask); - if (bus->attach_flags == new_flags) - return 0; - - bus->attach_flags = new_flags; - if (bus->state != BUS_UNSET && bus->is_kernel) - bus_kernel_realize_attach_flags(bus); - - return 0; -} - -_public_ int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server_id) { - assert_return(bus, -EINVAL); - assert_return(b || sd_id128_equal(server_id, SD_ID128_NULL), -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - bus->is_server = !!b; - bus->server_id = server_id; - return 0; -} - -_public_ int sd_bus_set_anonymous(sd_bus *bus, int b) { - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - bus->anonymous_auth = !!b; - return 0; -} - -_public_ int sd_bus_set_trusted(sd_bus *bus, int b) { - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - bus->trusted = !!b; - return 0; -} - -_public_ int sd_bus_set_description(sd_bus *bus, const char *description) { - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return free_and_strdup(&bus->description, description); -} - -_public_ int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b) { - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - bus->allow_interactive_authorization = !!b; - return 0; -} - -_public_ int sd_bus_get_allow_interactive_authorization(sd_bus *bus) { - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return bus->allow_interactive_authorization; -} - -static int hello_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) { - const char *s; - sd_bus *bus; - int r; - - assert(reply); - bus = reply->bus; - assert(bus); - assert(bus->state == BUS_HELLO || bus->state == BUS_CLOSING); - - r = sd_bus_message_get_errno(reply); - if (r > 0) - return -r; - - r = sd_bus_message_read(reply, "s", &s); - if (r < 0) - return r; - - if (!service_name_is_valid(s) || s[0] != ':') - return -EBADMSG; - - bus->unique_name = strdup(s); - if (!bus->unique_name) - return -ENOMEM; - - if (bus->state == BUS_HELLO) - bus->state = BUS_RUNNING; - - return 1; -} - -static int bus_send_hello(sd_bus *bus) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - assert(bus); - - if (!bus->bus_client || bus->is_kernel) - return 0; - - r = sd_bus_message_new_method_call( - bus, - &m, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "Hello"); - if (r < 0) - return r; - - return sd_bus_call_async(bus, NULL, m, hello_callback, NULL, 0); -} - -int bus_start_running(sd_bus *bus) { - assert(bus); - - if (bus->bus_client && !bus->is_kernel) { - bus->state = BUS_HELLO; - return 1; - } - - bus->state = BUS_RUNNING; - return 1; -} - -static int parse_address_key(const char **p, const char *key, char **value) { - size_t l, n = 0, allocated = 0; - const char *a; - char *r = NULL; - - assert(p); - assert(*p); - assert(value); - - if (key) { - l = strlen(key); - if (strncmp(*p, key, l) != 0) - return 0; - - if ((*p)[l] != '=') - return 0; - - if (*value) - return -EINVAL; - - a = *p + l + 1; - } else - a = *p; - - while (*a != ';' && *a != ',' && *a != 0) { - char c; - - if (*a == '%') { - int x, y; - - x = unhexchar(a[1]); - if (x < 0) { - free(r); - return x; - } - - y = unhexchar(a[2]); - if (y < 0) { - free(r); - return y; - } - - c = (char) ((x << 4) | y); - a += 3; - } else { - c = *a; - a++; - } - - if (!GREEDY_REALLOC(r, allocated, n + 2)) - return -ENOMEM; - - r[n++] = c; - } - - if (!r) { - r = strdup(""); - if (!r) - return -ENOMEM; - } else - r[n] = 0; - - if (*a == ',') - a++; - - *p = a; - - free(*value); - *value = r; - - return 1; -} - -static void skip_address_key(const char **p) { - assert(p); - assert(*p); - - *p += strcspn(*p, ","); - - if (**p == ',') - (*p) ++; -} - -static int parse_unix_address(sd_bus *b, const char **p, char **guid) { - _cleanup_free_ char *path = NULL, *abstract = NULL; - size_t l; - int r; - - assert(b); - assert(p); - assert(*p); - assert(guid); - - while (**p != 0 && **p != ';') { - r = parse_address_key(p, "guid", guid); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "path", &path); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "abstract", &abstract); - if (r < 0) - return r; - else if (r > 0) - continue; - - skip_address_key(p); - } - - if (!path && !abstract) - return -EINVAL; - - if (path && abstract) - return -EINVAL; - - if (path) { - l = strlen(path); - if (l > sizeof(b->sockaddr.un.sun_path)) - return -E2BIG; - - b->sockaddr.un.sun_family = AF_UNIX; - strncpy(b->sockaddr.un.sun_path, path, sizeof(b->sockaddr.un.sun_path)); - b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + l; - } else if (abstract) { - l = strlen(abstract); - if (l > sizeof(b->sockaddr.un.sun_path) - 1) - return -E2BIG; - - b->sockaddr.un.sun_family = AF_UNIX; - b->sockaddr.un.sun_path[0] = 0; - strncpy(b->sockaddr.un.sun_path+1, abstract, sizeof(b->sockaddr.un.sun_path)-1); - b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + 1 + l; - } - - return 0; -} - -static int parse_tcp_address(sd_bus *b, const char **p, char **guid) { - _cleanup_free_ char *host = NULL, *port = NULL, *family = NULL; - int r; - struct addrinfo *result, hints = { - .ai_socktype = SOCK_STREAM, - .ai_flags = AI_ADDRCONFIG, - }; - - assert(b); - assert(p); - assert(*p); - assert(guid); - - while (**p != 0 && **p != ';') { - r = parse_address_key(p, "guid", guid); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "host", &host); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "port", &port); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "family", &family); - if (r < 0) - return r; - else if (r > 0) - continue; - - skip_address_key(p); - } - - if (!host || !port) - return -EINVAL; - - if (family) { - if (streq(family, "ipv4")) - hints.ai_family = AF_INET; - else if (streq(family, "ipv6")) - hints.ai_family = AF_INET6; - else - return -EINVAL; - } - - r = getaddrinfo(host, port, &hints, &result); - if (r == EAI_SYSTEM) - return -errno; - else if (r != 0) - return -EADDRNOTAVAIL; - - memcpy(&b->sockaddr, result->ai_addr, result->ai_addrlen); - b->sockaddr_size = result->ai_addrlen; - - freeaddrinfo(result); - - return 0; -} - -static int parse_exec_address(sd_bus *b, const char **p, char **guid) { - char *path = NULL; - unsigned n_argv = 0, j; - char **argv = NULL; - size_t allocated = 0; - int r; - - assert(b); - assert(p); - assert(*p); - assert(guid); - - while (**p != 0 && **p != ';') { - r = parse_address_key(p, "guid", guid); - if (r < 0) - goto fail; - else if (r > 0) - continue; - - r = parse_address_key(p, "path", &path); - if (r < 0) - goto fail; - else if (r > 0) - continue; - - if (startswith(*p, "argv")) { - unsigned ul; - - errno = 0; - ul = strtoul(*p + 4, (char**) p, 10); - if (errno > 0 || **p != '=' || ul > 256) { - r = -EINVAL; - goto fail; - } - - (*p) ++; - - if (ul >= n_argv) { - if (!GREEDY_REALLOC0(argv, allocated, ul + 2)) { - r = -ENOMEM; - goto fail; - } - - n_argv = ul + 1; - } - - r = parse_address_key(p, NULL, argv + ul); - if (r < 0) - goto fail; - - continue; - } - - skip_address_key(p); - } - - if (!path) { - r = -EINVAL; - goto fail; - } - - /* Make sure there are no holes in the array, with the - * exception of argv[0] */ - for (j = 1; j < n_argv; j++) - if (!argv[j]) { - r = -EINVAL; - goto fail; - } - - if (argv && argv[0] == NULL) { - argv[0] = strdup(path); - if (!argv[0]) { - r = -ENOMEM; - goto fail; - } - } - - b->exec_path = path; - b->exec_argv = argv; - return 0; - -fail: - for (j = 0; j < n_argv; j++) - free(argv[j]); - - free(argv); - free(path); - return r; -} - -static int parse_kernel_address(sd_bus *b, const char **p, char **guid) { - _cleanup_free_ char *path = NULL; - int r; - - assert(b); - assert(p); - assert(*p); - assert(guid); - - while (**p != 0 && **p != ';') { - r = parse_address_key(p, "guid", guid); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "path", &path); - if (r < 0) - return r; - else if (r > 0) - continue; - - skip_address_key(p); - } - - if (!path) - return -EINVAL; - - free(b->kernel); - b->kernel = path; - path = NULL; - - return 0; -} - -static int parse_container_unix_address(sd_bus *b, const char **p, char **guid) { - _cleanup_free_ char *machine = NULL, *pid = NULL; - int r; - - assert(b); - assert(p); - assert(*p); - assert(guid); - - while (**p != 0 && **p != ';') { - r = parse_address_key(p, "guid", guid); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "machine", &machine); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "pid", &pid); - if (r < 0) - return r; - else if (r > 0) - continue; - - skip_address_key(p); - } - - if (!machine == !pid) - return -EINVAL; - - if (machine) { - if (!machine_name_is_valid(machine)) - return -EINVAL; - - free(b->machine); - b->machine = machine; - machine = NULL; - } else { - b->machine = mfree(b->machine); - } - - if (pid) { - r = parse_pid(pid, &b->nspid); - if (r < 0) - return r; - } else - b->nspid = 0; - - b->sockaddr.un.sun_family = AF_UNIX; - strncpy(b->sockaddr.un.sun_path, "/var/run/dbus/system_bus_socket", sizeof(b->sockaddr.un.sun_path)); - b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + strlen("/var/run/dbus/system_bus_socket"); - - return 0; -} - -static int parse_container_kernel_address(sd_bus *b, const char **p, char **guid) { - _cleanup_free_ char *machine = NULL, *pid = NULL; - int r; - - assert(b); - assert(p); - assert(*p); - assert(guid); - - while (**p != 0 && **p != ';') { - r = parse_address_key(p, "guid", guid); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "machine", &machine); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_address_key(p, "pid", &pid); - if (r < 0) - return r; - else if (r > 0) - continue; - - skip_address_key(p); - } - - if (!machine == !pid) - return -EINVAL; - - if (machine) { - if (!machine_name_is_valid(machine)) - return -EINVAL; - - free(b->machine); - b->machine = machine; - machine = NULL; - } else { - b->machine = mfree(b->machine); - } - - if (pid) { - r = parse_pid(pid, &b->nspid); - if (r < 0) - return r; - } else - b->nspid = 0; - - r = free_and_strdup(&b->kernel, "/sys/fs/kdbus/0-system/bus"); - if (r < 0) - return r; - - return 0; -} - -static void bus_reset_parsed_address(sd_bus *b) { - assert(b); - - zero(b->sockaddr); - b->sockaddr_size = 0; - b->exec_argv = strv_free(b->exec_argv); - b->exec_path = mfree(b->exec_path); - b->server_id = SD_ID128_NULL; - b->kernel = mfree(b->kernel); - b->machine = mfree(b->machine); - b->nspid = 0; -} - -static int bus_parse_next_address(sd_bus *b) { - _cleanup_free_ char *guid = NULL; - const char *a; - int r; - - assert(b); - - if (!b->address) - return 0; - if (b->address[b->address_index] == 0) - return 0; - - bus_reset_parsed_address(b); - - a = b->address + b->address_index; - - while (*a != 0) { - - if (*a == ';') { - a++; - continue; - } - - if (startswith(a, "unix:")) { - a += 5; - - r = parse_unix_address(b, &a, &guid); - if (r < 0) - return r; - break; - - } else if (startswith(a, "tcp:")) { - - a += 4; - r = parse_tcp_address(b, &a, &guid); - if (r < 0) - return r; - - break; - - } else if (startswith(a, "unixexec:")) { - - a += 9; - r = parse_exec_address(b, &a, &guid); - if (r < 0) - return r; - - break; - - } else if (startswith(a, "kernel:")) { - - a += 7; - r = parse_kernel_address(b, &a, &guid); - if (r < 0) - return r; - - break; - } else if (startswith(a, "x-machine-unix:")) { - - a += 15; - r = parse_container_unix_address(b, &a, &guid); - if (r < 0) - return r; - - break; - } else if (startswith(a, "x-machine-kernel:")) { - - a += 17; - r = parse_container_kernel_address(b, &a, &guid); - if (r < 0) - return r; - - break; - } - - a = strchr(a, ';'); - if (!a) - return 0; - } - - if (guid) { - r = sd_id128_from_string(guid, &b->server_id); - if (r < 0) - return r; - } - - b->address_index = a - b->address; - return 1; -} - -static int bus_start_address(sd_bus *b) { - bool container_kdbus_available = false; - bool kdbus_available = false; - int r; - - assert(b); - - for (;;) { - bool skipped = false; - - bus_close_fds(b); - - /* - * Usually, if you provide multiple different bus-addresses, we - * try all of them in order. We use the first one that - * succeeds. However, if you mix kernel and unix addresses, we - * never try unix-addresses if a previous kernel address was - * tried and kdbus was available. This is required to prevent - * clients to fallback to the bus-proxy if kdbus is available - * but failed (eg., too many connections). - */ - - if (b->exec_path) - r = bus_socket_exec(b); - else if ((b->nspid > 0 || b->machine) && b->kernel) { - r = bus_container_connect_kernel(b); - if (r < 0 && !IN_SET(r, -ENOENT, -ESOCKTNOSUPPORT)) - container_kdbus_available = true; - - } else if ((b->nspid > 0 || b->machine) && b->sockaddr.sa.sa_family != AF_UNSPEC) { - if (!container_kdbus_available) - r = bus_container_connect_socket(b); - else - skipped = true; - - } else if (b->kernel) { - r = bus_kernel_connect(b); - if (r < 0 && !IN_SET(r, -ENOENT, -ESOCKTNOSUPPORT)) - kdbus_available = true; - - } else if (b->sockaddr.sa.sa_family != AF_UNSPEC) { - if (!kdbus_available) - r = bus_socket_connect(b); - else - skipped = true; - } else - skipped = true; - - if (!skipped) { - if (r >= 0) { - r = attach_io_events(b); - if (r >= 0) - return r; - } - - b->last_connect_error = -r; - } - - r = bus_parse_next_address(b); - if (r < 0) - return r; - if (r == 0) - return b->last_connect_error ? -b->last_connect_error : -ECONNREFUSED; - } -} - -int bus_next_address(sd_bus *b) { - assert(b); - - bus_reset_parsed_address(b); - return bus_start_address(b); -} - -static int bus_start_fd(sd_bus *b) { - struct stat st; - int r; - - assert(b); - assert(b->input_fd >= 0); - assert(b->output_fd >= 0); - - r = fd_nonblock(b->input_fd, true); - if (r < 0) - return r; - - r = fd_cloexec(b->input_fd, true); - if (r < 0) - return r; - - if (b->input_fd != b->output_fd) { - r = fd_nonblock(b->output_fd, true); - if (r < 0) - return r; - - r = fd_cloexec(b->output_fd, true); - if (r < 0) - return r; - } - - if (fstat(b->input_fd, &st) < 0) - return -errno; - - if (S_ISCHR(b->input_fd)) - return bus_kernel_take_fd(b); - else - return bus_socket_take_fd(b); -} - -_public_ int sd_bus_start(sd_bus *bus) { - int r; - - assert_return(bus, -EINVAL); - assert_return(bus->state == BUS_UNSET, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - bus->state = BUS_OPENING; - - if (bus->is_server && bus->bus_client) - return -EINVAL; - - if (bus->input_fd >= 0) - r = bus_start_fd(bus); - else if (bus->address || bus->sockaddr.sa.sa_family != AF_UNSPEC || bus->exec_path || bus->kernel || bus->machine) - r = bus_start_address(bus); - else - return -EINVAL; - - if (r < 0) { - sd_bus_close(bus); - return r; - } - - return bus_send_hello(bus); -} - -_public_ int sd_bus_open(sd_bus **ret) { - const char *e; - sd_bus *b; - int r; - - assert_return(ret, -EINVAL); - - /* Let's connect to the starter bus if it is set, and - * otherwise to the bus that is appropropriate for the scope - * we are running in */ - - e = secure_getenv("DBUS_STARTER_BUS_TYPE"); - if (e) { - if (streq(e, "system")) - return sd_bus_open_system(ret); - else if (STR_IN_SET(e, "session", "user")) - return sd_bus_open_user(ret); - } - - e = secure_getenv("DBUS_STARTER_ADDRESS"); - if (!e) { - if (cg_pid_get_owner_uid(0, NULL) >= 0) - return sd_bus_open_user(ret); - else - return sd_bus_open_system(ret); - } - - r = sd_bus_new(&b); - if (r < 0) - return r; - - r = sd_bus_set_address(b, e); - if (r < 0) - goto fail; - - b->bus_client = true; - - /* We don't know whether the bus is trusted or not, so better - * be safe, and authenticate everything */ - b->trusted = false; - b->attach_flags |= KDBUS_ATTACH_CAPS | KDBUS_ATTACH_CREDS; - b->creds_mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_EFFECTIVE_CAPS; - - r = sd_bus_start(b); - if (r < 0) - goto fail; - - *ret = b; - return 0; - -fail: - bus_free(b); - return r; -} - -int bus_set_address_system(sd_bus *b) { - const char *e; - assert(b); - - e = secure_getenv("DBUS_SYSTEM_BUS_ADDRESS"); - if (e) - return sd_bus_set_address(b, e); - - return sd_bus_set_address(b, DEFAULT_SYSTEM_BUS_ADDRESS); -} - -_public_ int sd_bus_open_system(sd_bus **ret) { - sd_bus *b; - int r; - - assert_return(ret, -EINVAL); - - r = sd_bus_new(&b); - if (r < 0) - return r; - - r = bus_set_address_system(b); - if (r < 0) - goto fail; - - b->bus_client = true; - b->is_system = true; - - /* Let's do per-method access control on the system bus. We - * need the caller's UID and capability set for that. */ - b->trusted = false; - b->attach_flags |= KDBUS_ATTACH_CAPS | KDBUS_ATTACH_CREDS; - b->creds_mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_EFFECTIVE_CAPS; - - r = sd_bus_start(b); - if (r < 0) - goto fail; - - *ret = b; - return 0; - -fail: - bus_free(b); - return r; -} - -int bus_set_address_user(sd_bus *b) { - const char *e; - uid_t uid; - int r; - - assert(b); - - e = secure_getenv("DBUS_SESSION_BUS_ADDRESS"); - if (e) - return sd_bus_set_address(b, e); - - r = cg_pid_get_owner_uid(0, &uid); - if (r < 0) - uid = getuid(); - - e = secure_getenv("XDG_RUNTIME_DIR"); - if (e) { - _cleanup_free_ char *ee = NULL; - - ee = bus_address_escape(e); - if (!ee) - return -ENOMEM; - - (void) asprintf(&b->address, KERNEL_USER_BUS_ADDRESS_FMT ";" UNIX_USER_BUS_ADDRESS_FMT, uid, ee); - } else - (void) asprintf(&b->address, KERNEL_USER_BUS_ADDRESS_FMT, uid); - - if (!b->address) - return -ENOMEM; - - return 0; -} - -_public_ int sd_bus_open_user(sd_bus **ret) { - sd_bus *b; - int r; - - assert_return(ret, -EINVAL); - - r = sd_bus_new(&b); - if (r < 0) - return r; - - r = bus_set_address_user(b); - if (r < 0) - return r; - - b->bus_client = true; - b->is_user = true; - - /* We don't do any per-method access control on the user - * bus. */ - b->trusted = true; - - r = sd_bus_start(b); - if (r < 0) - goto fail; - - *ret = b; - return 0; - -fail: - bus_free(b); - return r; -} - -int bus_set_address_system_remote(sd_bus *b, const char *host) { - _cleanup_free_ char *e = NULL; - char *m = NULL, *c = NULL; - - assert(b); - assert(host); - - /* Let's see if we shall enter some container */ - m = strchr(host, ':'); - if (m) { - m++; - - /* Let's make sure this is not a port of some kind, - * and is a valid machine name. */ - if (!in_charset(m, "0123456789") && machine_name_is_valid(m)) { - char *t; - - /* Cut out the host part */ - t = strndupa(host, m - host - 1); - e = bus_address_escape(t); - if (!e) - return -ENOMEM; - - c = strjoina(",argv4=--machine=", m); - } - } - - if (!e) { - e = bus_address_escape(host); - if (!e) - return -ENOMEM; - } - - b->address = strjoin("unixexec:path=ssh,argv1=-xT,argv2=", e, ",argv3=systemd-stdio-bridge", c, NULL); - if (!b->address) - return -ENOMEM; - - return 0; - } - -_public_ int sd_bus_open_system_remote(sd_bus **ret, const char *host) { - sd_bus *bus; - int r; - - assert_return(host, -EINVAL); - assert_return(ret, -EINVAL); - - r = sd_bus_new(&bus); - if (r < 0) - return r; - - r = bus_set_address_system_remote(bus, host); - if (r < 0) - goto fail; - - bus->bus_client = true; - bus->trusted = false; - bus->is_system = true; - - r = sd_bus_start(bus); - if (r < 0) - goto fail; - - *ret = bus; - return 0; - -fail: - bus_free(bus); - return r; -} - -int bus_set_address_system_machine(sd_bus *b, const char *machine) { - _cleanup_free_ char *e = NULL; - - assert(b); - assert(machine); - - e = bus_address_escape(machine); - if (!e) - return -ENOMEM; - - b->address = strjoin("x-machine-kernel:machine=", e, ";x-machine-unix:machine=", e, NULL); - if (!b->address) - return -ENOMEM; - - return 0; -} - -_public_ int sd_bus_open_system_machine(sd_bus **ret, const char *machine) { - sd_bus *bus; - int r; - - assert_return(machine, -EINVAL); - assert_return(ret, -EINVAL); - assert_return(machine_name_is_valid(machine), -EINVAL); - - r = sd_bus_new(&bus); - if (r < 0) - return r; - - r = bus_set_address_system_machine(bus, machine); - if (r < 0) - goto fail; - - bus->bus_client = true; - bus->trusted = false; - bus->is_system = true; - - r = sd_bus_start(bus); - if (r < 0) - goto fail; - - *ret = bus; - return 0; - -fail: - bus_free(bus); - return r; -} - -_public_ void sd_bus_close(sd_bus *bus) { - - if (!bus) - return; - if (bus->state == BUS_CLOSED) - return; - if (bus_pid_changed(bus)) - return; - - bus->state = BUS_CLOSED; - - sd_bus_detach_event(bus); - - /* Drop all queued messages so that they drop references to - * the bus object and the bus may be freed */ - bus_reset_queues(bus); - - if (!bus->is_kernel) - bus_close_fds(bus); - - /* We'll leave the fd open in case this is a kernel bus, since - * there might still be memblocks around that reference this - * bus, and they might need to invoke the KDBUS_CMD_FREE - * ioctl on the fd when they are freed. */ -} - -_public_ sd_bus* sd_bus_flush_close_unref(sd_bus *bus) { - - if (!bus) - return NULL; - - sd_bus_flush(bus); - sd_bus_close(bus); - - return sd_bus_unref(bus); -} - -static void bus_enter_closing(sd_bus *bus) { - assert(bus); - - if (bus->state != BUS_OPENING && - bus->state != BUS_AUTHENTICATING && - bus->state != BUS_HELLO && - bus->state != BUS_RUNNING) - return; - - bus->state = BUS_CLOSING; -} - -_public_ sd_bus *sd_bus_ref(sd_bus *bus) { - - if (!bus) - return NULL; - - assert_se(REFCNT_INC(bus->n_ref) >= 2); - - return bus; -} - -_public_ sd_bus *sd_bus_unref(sd_bus *bus) { - unsigned i; - - if (!bus) - return NULL; - - i = REFCNT_DEC(bus->n_ref); - if (i > 0) - return NULL; - - bus_free(bus); - return NULL; -} - -_public_ int sd_bus_is_open(sd_bus *bus) { - - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return BUS_IS_OPEN(bus->state); -} - -_public_ int sd_bus_can_send(sd_bus *bus, char type) { - int r; - - assert_return(bus, -EINVAL); - assert_return(bus->state != BUS_UNSET, -ENOTCONN); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (bus->hello_flags & KDBUS_HELLO_MONITOR) - return 0; - - if (type == SD_BUS_TYPE_UNIX_FD) { - if (!(bus->hello_flags & KDBUS_HELLO_ACCEPT_FD)) - return 0; - - r = bus_ensure_running(bus); - if (r < 0) - return r; - - return bus->can_fds; - } - - return bus_type_is_valid(type); -} - -_public_ int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *id) { - int r; - - assert_return(bus, -EINVAL); - assert_return(id, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - r = bus_ensure_running(bus); - if (r < 0) - return r; - - *id = bus->server_id; - return 0; -} - -static int bus_seal_message(sd_bus *b, sd_bus_message *m, usec_t timeout) { - assert(b); - assert(m); - - if (m->sealed) { - /* If we copy the same message to multiple - * destinations, avoid using the same cookie - * numbers. */ - b->cookie = MAX(b->cookie, BUS_MESSAGE_COOKIE(m)); - return 0; - } - - if (timeout == 0) - timeout = BUS_DEFAULT_TIMEOUT; - - return bus_message_seal(m, ++b->cookie, timeout); -} - -static int bus_remarshal_message(sd_bus *b, sd_bus_message **m) { - bool remarshal = false; - - assert(b); - - /* wrong packet version */ - if (b->message_version != 0 && b->message_version != (*m)->header->version) - remarshal = true; - - /* wrong packet endianness */ - if (b->message_endian != 0 && b->message_endian != (*m)->header->endian) - remarshal = true; - - /* TODO: kdbus-messages received from the kernel contain data which is - * not allowed to be passed to KDBUS_CMD_SEND. Therefore, we have to - * force remarshaling of the message. Technically, we could just - * recreate the kdbus message, but that is non-trivial as other parts of - * the message refer to m->kdbus already. This should be fixed! */ - if ((*m)->kdbus && (*m)->release_kdbus) - remarshal = true; - - return remarshal ? bus_message_remarshal(b, m) : 0; -} - -int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m) { - assert(b); - assert(m); - - /* Fake some timestamps, if they were requested, and not - * already initialized */ - if (b->attach_flags & KDBUS_ATTACH_TIMESTAMP) { - if (m->realtime <= 0) - m->realtime = now(CLOCK_REALTIME); - - if (m->monotonic <= 0) - m->monotonic = now(CLOCK_MONOTONIC); - } - - /* The bus specification says the serial number cannot be 0, - * hence let's fill something in for synthetic messages. Since - * synthetic messages might have a fake sender and we don't - * want to interfere with the real sender's serial numbers we - * pick a fixed, artificial one. We use (uint32_t) -1 rather - * than (uint64_t) -1 since dbus1 only had 32bit identifiers, - * even though kdbus can do 64bit. */ - return bus_message_seal(m, 0xFFFFFFFFULL, 0); -} - -static int bus_write_message(sd_bus *bus, sd_bus_message *m, bool hint_sync_call, size_t *idx) { - int r; - - assert(bus); - assert(m); - - if (bus->is_kernel) - r = bus_kernel_write_message(bus, m, hint_sync_call); - else - r = bus_socket_write_message(bus, m, idx); - - if (r <= 0) - return r; - - if (bus->is_kernel || *idx >= BUS_MESSAGE_SIZE(m)) - log_debug("Sent message type=%s sender=%s destination=%s object=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " error=%s", - bus_message_type_to_string(m->header->type), - strna(sd_bus_message_get_sender(m)), - strna(sd_bus_message_get_destination(m)), - strna(sd_bus_message_get_path(m)), - strna(sd_bus_message_get_interface(m)), - strna(sd_bus_message_get_member(m)), - BUS_MESSAGE_COOKIE(m), - m->reply_cookie, - strna(m->error.message)); - - return r; -} - -static int dispatch_wqueue(sd_bus *bus) { - int r, ret = 0; - - assert(bus); - assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO); - - while (bus->wqueue_size > 0) { - - r = bus_write_message(bus, bus->wqueue[0], false, &bus->windex); - if (r < 0) - return r; - else if (r == 0) - /* Didn't do anything this time */ - return ret; - else if (bus->is_kernel || bus->windex >= BUS_MESSAGE_SIZE(bus->wqueue[0])) { - /* Fully written. Let's drop the entry from - * the queue. - * - * This isn't particularly optimized, but - * well, this is supposed to be our worst-case - * buffer only, and the socket buffer is - * supposed to be our primary buffer, and if - * it got full, then all bets are off - * anyway. */ - - bus->wqueue_size --; - sd_bus_message_unref(bus->wqueue[0]); - memmove(bus->wqueue, bus->wqueue + 1, sizeof(sd_bus_message*) * bus->wqueue_size); - bus->windex = 0; - - ret = 1; - } - } - - return ret; -} - -static int bus_read_message(sd_bus *bus, bool hint_priority, int64_t priority) { - assert(bus); - - if (bus->is_kernel) - return bus_kernel_read_message(bus, hint_priority, priority); - else - return bus_socket_read_message(bus); -} - -int bus_rqueue_make_room(sd_bus *bus) { - assert(bus); - - if (bus->rqueue_size >= BUS_RQUEUE_MAX) - return -ENOBUFS; - - if (!GREEDY_REALLOC(bus->rqueue, bus->rqueue_allocated, bus->rqueue_size + 1)) - return -ENOMEM; - - return 0; -} - -static int dispatch_rqueue(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **m) { - int r, ret = 0; - - assert(bus); - assert(m); - assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO); - - /* Note that the priority logic is only available on kdbus, - * where the rqueue is unused. We check the rqueue here - * anyway, because it's simple... */ - - for (;;) { - if (bus->rqueue_size > 0) { - /* Dispatch a queued message */ - - *m = bus->rqueue[0]; - bus->rqueue_size --; - memmove(bus->rqueue, bus->rqueue + 1, sizeof(sd_bus_message*) * bus->rqueue_size); - return 1; - } - - /* Try to read a new message */ - r = bus_read_message(bus, hint_priority, priority); - if (r < 0) - return r; - if (r == 0) - return ret; - - ret = 1; - } -} - -static int bus_send_internal(sd_bus *bus, sd_bus_message *_m, uint64_t *cookie, bool hint_sync_call) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); - int r; - - assert_return(m, -EINVAL); - - if (!bus) - bus = m->bus; - - assert_return(!bus_pid_changed(bus), -ECHILD); - assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (m->n_fds > 0) { - r = sd_bus_can_send(bus, SD_BUS_TYPE_UNIX_FD); - if (r < 0) - return r; - if (r == 0) - return -EOPNOTSUPP; - } - - /* If the cookie number isn't kept, then we know that no reply - * is expected */ - if (!cookie && !m->sealed) - m->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; - - r = bus_seal_message(bus, m, 0); - if (r < 0) - return r; - - /* Remarshall if we have to. This will possibly unref the - * message and place a replacement in m */ - r = bus_remarshal_message(bus, &m); - if (r < 0) - return r; - - /* If this is a reply and no reply was requested, then let's - * suppress this, if we can */ - if (m->dont_send) - goto finish; - - if ((bus->state == BUS_RUNNING || bus->state == BUS_HELLO) && bus->wqueue_size <= 0) { - size_t idx = 0; - - r = bus_write_message(bus, m, hint_sync_call, &idx); - if (r < 0) { - if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) { - bus_enter_closing(bus); - return -ECONNRESET; - } - - return r; - } - - if (!bus->is_kernel && idx < BUS_MESSAGE_SIZE(m)) { - /* Wasn't fully written. So let's remember how - * much was written. Note that the first entry - * of the wqueue array is always allocated so - * that we always can remember how much was - * written. */ - bus->wqueue[0] = sd_bus_message_ref(m); - bus->wqueue_size = 1; - bus->windex = idx; - } - - } else { - /* Just append it to the queue. */ - - if (bus->wqueue_size >= BUS_WQUEUE_MAX) - return -ENOBUFS; - - if (!GREEDY_REALLOC(bus->wqueue, bus->wqueue_allocated, bus->wqueue_size + 1)) - return -ENOMEM; - - bus->wqueue[bus->wqueue_size ++] = sd_bus_message_ref(m); - } - -finish: - if (cookie) - *cookie = BUS_MESSAGE_COOKIE(m); - - return 1; -} - -_public_ int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *cookie) { - return bus_send_internal(bus, m, cookie, false); -} - -_public_ int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *cookie) { - int r; - - assert_return(m, -EINVAL); - - if (!bus) - bus = m->bus; - - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (!streq_ptr(m->destination, destination)) { - - if (!destination) - return -EEXIST; - - r = sd_bus_message_set_destination(m, destination); - if (r < 0) - return r; - } - - return sd_bus_send(bus, m, cookie); -} - -static usec_t calc_elapse(uint64_t usec) { - if (usec == (uint64_t) -1) - return 0; - - return now(CLOCK_MONOTONIC) + usec; -} - -static int timeout_compare(const void *a, const void *b) { - const struct reply_callback *x = a, *y = b; - - if (x->timeout != 0 && y->timeout == 0) - return -1; - - if (x->timeout == 0 && y->timeout != 0) - return 1; - - if (x->timeout < y->timeout) - return -1; - - if (x->timeout > y->timeout) - return 1; - - return 0; -} - -_public_ int sd_bus_call_async( - sd_bus *bus, - sd_bus_slot **slot, - sd_bus_message *_m, - sd_bus_message_handler_t callback, - void *userdata, - uint64_t usec) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); - _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *s = NULL; - int r; - - assert_return(m, -EINVAL); - assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); - assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL); - assert_return(callback, -EINVAL); - - if (!bus) - bus = m->bus; - - assert_return(!bus_pid_changed(bus), -ECHILD); - assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS); - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - r = ordered_hashmap_ensure_allocated(&bus->reply_callbacks, &uint64_hash_ops); - if (r < 0) - return r; - - r = prioq_ensure_allocated(&bus->reply_callbacks_prioq, timeout_compare); - if (r < 0) - return r; - - r = bus_seal_message(bus, m, usec); - if (r < 0) - return r; - - r = bus_remarshal_message(bus, &m); - if (r < 0) - return r; - - s = bus_slot_allocate(bus, !slot, BUS_REPLY_CALLBACK, sizeof(struct reply_callback), userdata); - if (!s) - return -ENOMEM; - - s->reply_callback.callback = callback; - - s->reply_callback.cookie = BUS_MESSAGE_COOKIE(m); - r = ordered_hashmap_put(bus->reply_callbacks, &s->reply_callback.cookie, &s->reply_callback); - if (r < 0) { - s->reply_callback.cookie = 0; - return r; - } - - s->reply_callback.timeout = calc_elapse(m->timeout); - if (s->reply_callback.timeout != 0) { - r = prioq_put(bus->reply_callbacks_prioq, &s->reply_callback, &s->reply_callback.prioq_idx); - if (r < 0) { - s->reply_callback.timeout = 0; - return r; - } - } - - r = sd_bus_send(bus, m, &s->reply_callback.cookie); - if (r < 0) - return r; - - if (slot) - *slot = s; - s = NULL; - - return r; -} - -int bus_ensure_running(sd_bus *bus) { - int r; - - assert(bus); - - if (bus->state == BUS_UNSET || bus->state == BUS_CLOSED || bus->state == BUS_CLOSING) - return -ENOTCONN; - if (bus->state == BUS_RUNNING) - return 1; - - for (;;) { - r = sd_bus_process(bus, NULL); - if (r < 0) - return r; - if (bus->state == BUS_RUNNING) - return 1; - if (r > 0) - continue; - - r = sd_bus_wait(bus, (uint64_t) -1); - if (r < 0) - return r; - } -} - -_public_ int sd_bus_call( - sd_bus *bus, - sd_bus_message *_m, - uint64_t usec, - sd_bus_error *error, - sd_bus_message **reply) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); - usec_t timeout; - uint64_t cookie; - unsigned i; - int r; - - bus_assert_return(m, -EINVAL, error); - bus_assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL, error); - bus_assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL, error); - bus_assert_return(!bus_error_is_dirty(error), -EINVAL, error); - - if (!bus) - bus = m->bus; - - bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); - bus_assert_return(!bus->is_kernel || !(bus->hello_flags & KDBUS_HELLO_MONITOR), -EROFS, error); - - if (!BUS_IS_OPEN(bus->state)) { - r = -ENOTCONN; - goto fail; - } - - r = bus_ensure_running(bus); - if (r < 0) - goto fail; - - i = bus->rqueue_size; - - r = bus_seal_message(bus, m, usec); - if (r < 0) - goto fail; - - r = bus_remarshal_message(bus, &m); - if (r < 0) - goto fail; - - r = bus_send_internal(bus, m, &cookie, true); - if (r < 0) - goto fail; - - timeout = calc_elapse(m->timeout); - - for (;;) { - usec_t left; - - while (i < bus->rqueue_size) { - sd_bus_message *incoming = NULL; - - incoming = bus->rqueue[i]; - - if (incoming->reply_cookie == cookie) { - /* Found a match! */ - - memmove(bus->rqueue + i, bus->rqueue + i + 1, sizeof(sd_bus_message*) * (bus->rqueue_size - i - 1)); - bus->rqueue_size--; - log_debug_bus_message(incoming); - - if (incoming->header->type == SD_BUS_MESSAGE_METHOD_RETURN) { - - if (incoming->n_fds <= 0 || (bus->hello_flags & KDBUS_HELLO_ACCEPT_FD)) { - if (reply) - *reply = incoming; - else - sd_bus_message_unref(incoming); - - return 1; - } - - r = sd_bus_error_setf(error, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptors which I couldn't accept. Sorry."); - sd_bus_message_unref(incoming); - return r; - - } else if (incoming->header->type == SD_BUS_MESSAGE_METHOD_ERROR) { - r = sd_bus_error_copy(error, &incoming->error); - sd_bus_message_unref(incoming); - return r; - } else { - r = -EIO; - goto fail; - } - - } else if (BUS_MESSAGE_COOKIE(incoming) == cookie && - bus->unique_name && - incoming->sender && - streq(bus->unique_name, incoming->sender)) { - - memmove(bus->rqueue + i, bus->rqueue + i + 1, sizeof(sd_bus_message*) * (bus->rqueue_size - i - 1)); - bus->rqueue_size--; - - /* Our own message? Somebody is trying - * to send its own client a message, - * let's not dead-lock, let's fail - * immediately. */ - - sd_bus_message_unref(incoming); - r = -ELOOP; - goto fail; - } - - /* Try to read more, right-away */ - i++; - } - - r = bus_read_message(bus, false, 0); - if (r < 0) { - if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) { - bus_enter_closing(bus); - r = -ECONNRESET; - } - - goto fail; - } - if (r > 0) - continue; - - if (timeout > 0) { - usec_t n; - - n = now(CLOCK_MONOTONIC); - if (n >= timeout) { - r = -ETIMEDOUT; - goto fail; - } - - left = timeout - n; - } else - left = (uint64_t) -1; - - r = bus_poll(bus, true, left); - if (r < 0) - goto fail; - if (r == 0) { - r = -ETIMEDOUT; - goto fail; - } - - r = dispatch_wqueue(bus); - if (r < 0) { - if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) { - bus_enter_closing(bus); - r = -ECONNRESET; - } - - goto fail; - } - } - -fail: - return sd_bus_error_set_errno(error, r); -} - -_public_ int sd_bus_get_fd(sd_bus *bus) { - - assert_return(bus, -EINVAL); - assert_return(bus->input_fd == bus->output_fd, -EPERM); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return bus->input_fd; -} - -_public_ int sd_bus_get_events(sd_bus *bus) { - int flags = 0; - - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state) && bus->state != BUS_CLOSING) - return -ENOTCONN; - - if (bus->state == BUS_OPENING) - flags |= POLLOUT; - else if (bus->state == BUS_AUTHENTICATING) { - - if (bus_socket_auth_needs_write(bus)) - flags |= POLLOUT; - - flags |= POLLIN; - - } else if (bus->state == BUS_RUNNING || bus->state == BUS_HELLO) { - if (bus->rqueue_size <= 0) - flags |= POLLIN; - if (bus->wqueue_size > 0) - flags |= POLLOUT; - } - - return flags; -} - -_public_ int sd_bus_get_timeout(sd_bus *bus, uint64_t *timeout_usec) { - struct reply_callback *c; - - assert_return(bus, -EINVAL); - assert_return(timeout_usec, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!BUS_IS_OPEN(bus->state) && bus->state != BUS_CLOSING) - return -ENOTCONN; - - if (bus->track_queue) { - *timeout_usec = 0; - return 1; - } - - if (bus->state == BUS_CLOSING) { - *timeout_usec = 0; - return 1; - } - - if (bus->state == BUS_AUTHENTICATING) { - *timeout_usec = bus->auth_timeout; - return 1; - } - - if (bus->state != BUS_RUNNING && bus->state != BUS_HELLO) { - *timeout_usec = (uint64_t) -1; - return 0; - } - - if (bus->rqueue_size > 0) { - *timeout_usec = 0; - return 1; - } - - c = prioq_peek(bus->reply_callbacks_prioq); - if (!c) { - *timeout_usec = (uint64_t) -1; - return 0; - } - - if (c->timeout == 0) { - *timeout_usec = (uint64_t) -1; - return 0; - } - - *timeout_usec = c->timeout; - return 1; -} - -static int process_timeout(sd_bus *bus) { - _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message* m = NULL; - struct reply_callback *c; - sd_bus_slot *slot; - usec_t n; - int r; - - assert(bus); - - c = prioq_peek(bus->reply_callbacks_prioq); - if (!c) - return 0; - - n = now(CLOCK_MONOTONIC); - if (c->timeout > n) - return 0; - - r = bus_message_new_synthetic_error( - bus, - c->cookie, - &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call timed out"), - &m); - if (r < 0) - return r; - - r = bus_seal_synthetic_message(bus, m); - if (r < 0) - return r; - - assert_se(prioq_pop(bus->reply_callbacks_prioq) == c); - c->timeout = 0; - - ordered_hashmap_remove(bus->reply_callbacks, &c->cookie); - c->cookie = 0; - - slot = container_of(c, sd_bus_slot, reply_callback); - - bus->iteration_counter ++; - - bus->current_message = m; - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_handler = c->callback; - bus->current_userdata = slot->userdata; - r = c->callback(m, slot->userdata, &error_buffer); - bus->current_userdata = NULL; - bus->current_handler = NULL; - bus->current_slot = NULL; - bus->current_message = NULL; - - if (slot->floating) { - bus_slot_disconnect(slot); - sd_bus_slot_unref(slot); - } - - sd_bus_slot_unref(slot); - - return bus_maybe_reply_error(m, r, &error_buffer); -} - -static int process_hello(sd_bus *bus, sd_bus_message *m) { - assert(bus); - assert(m); - - if (bus->state != BUS_HELLO) - return 0; - - /* Let's make sure the first message on the bus is the HELLO - * reply. But note that we don't actually parse the message - * here (we leave that to the usual handling), we just verify - * we don't let any earlier msg through. */ - - if (m->header->type != SD_BUS_MESSAGE_METHOD_RETURN && - m->header->type != SD_BUS_MESSAGE_METHOD_ERROR) - return -EIO; - - if (m->reply_cookie != 1) - return -EIO; - - return 0; -} - -static int process_reply(sd_bus *bus, sd_bus_message *m) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *synthetic_reply = NULL; - _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; - struct reply_callback *c; - sd_bus_slot *slot; - int r; - - assert(bus); - assert(m); - - if (m->header->type != SD_BUS_MESSAGE_METHOD_RETURN && - m->header->type != SD_BUS_MESSAGE_METHOD_ERROR) - return 0; - - if (bus->is_kernel && (bus->hello_flags & KDBUS_HELLO_MONITOR)) - return 0; - - if (m->destination && bus->unique_name && !streq_ptr(m->destination, bus->unique_name)) - return 0; - - c = ordered_hashmap_remove(bus->reply_callbacks, &m->reply_cookie); - if (!c) - return 0; - - c->cookie = 0; - - slot = container_of(c, sd_bus_slot, reply_callback); - - if (m->n_fds > 0 && !(bus->hello_flags & KDBUS_HELLO_ACCEPT_FD)) { - - /* If the reply contained a file descriptor which we - * didn't want we pass an error instead. */ - - r = bus_message_new_synthetic_error( - bus, - m->reply_cookie, - &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptor"), - &synthetic_reply); - if (r < 0) - return r; - - /* Copy over original timestamp */ - synthetic_reply->realtime = m->realtime; - synthetic_reply->monotonic = m->monotonic; - synthetic_reply->seqnum = m->seqnum; - - r = bus_seal_synthetic_message(bus, synthetic_reply); - if (r < 0) - return r; - - m = synthetic_reply; - } else { - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - } - - if (c->timeout != 0) { - prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx); - c->timeout = 0; - } - - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_handler = c->callback; - bus->current_userdata = slot->userdata; - r = c->callback(m, slot->userdata, &error_buffer); - bus->current_userdata = NULL; - bus->current_handler = NULL; - bus->current_slot = NULL; - - if (slot->floating) { - bus_slot_disconnect(slot); - sd_bus_slot_unref(slot); - } - - sd_bus_slot_unref(slot); - - return bus_maybe_reply_error(m, r, &error_buffer); -} - -static int process_filter(sd_bus *bus, sd_bus_message *m) { - _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; - struct filter_callback *l; - int r; - - assert(bus); - assert(m); - - do { - bus->filter_callbacks_modified = false; - - LIST_FOREACH(callbacks, l, bus->filter_callbacks) { - sd_bus_slot *slot; - - if (bus->filter_callbacks_modified) - break; - - /* Don't run this more than once per iteration */ - if (l->last_iteration == bus->iteration_counter) - continue; - - l->last_iteration = bus->iteration_counter; - - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - slot = container_of(l, sd_bus_slot, filter_callback); - - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_handler = l->callback; - bus->current_userdata = slot->userdata; - r = l->callback(m, slot->userdata, &error_buffer); - bus->current_userdata = NULL; - bus->current_handler = NULL; - bus->current_slot = sd_bus_slot_unref(slot); - - r = bus_maybe_reply_error(m, r, &error_buffer); - if (r != 0) - return r; - - } - - } while (bus->filter_callbacks_modified); - - return 0; -} - -static int process_match(sd_bus *bus, sd_bus_message *m) { - int r; - - assert(bus); - assert(m); - - do { - bus->match_callbacks_modified = false; - - r = bus_match_run(bus, &bus->match_callbacks, m); - if (r != 0) - return r; - - } while (bus->match_callbacks_modified); - - return 0; -} - -static int process_builtin(sd_bus *bus, sd_bus_message *m) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - int r; - - assert(bus); - assert(m); - - if (bus->hello_flags & KDBUS_HELLO_MONITOR) - return 0; - - if (bus->manual_peer_interface) - return 0; - - if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) - return 0; - - if (!streq_ptr(m->interface, "org.freedesktop.DBus.Peer")) - return 0; - - if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) - return 1; - - if (streq_ptr(m->member, "Ping")) - r = sd_bus_message_new_method_return(m, &reply); - else if (streq_ptr(m->member, "GetMachineId")) { - sd_id128_t id; - char sid[33]; - - r = sd_id128_get_machine(&id); - if (r < 0) - return r; - - r = sd_bus_message_new_method_return(m, &reply); - if (r < 0) - return r; - - r = sd_bus_message_append(reply, "s", sd_id128_to_string(id, sid)); - } else { - r = sd_bus_message_new_method_errorf( - m, &reply, - SD_BUS_ERROR_UNKNOWN_METHOD, - "Unknown method '%s' on interface '%s'.", m->member, m->interface); - } - - if (r < 0) - return r; - - r = sd_bus_send(bus, reply, NULL); - if (r < 0) - return r; - - return 1; -} - -static int process_fd_check(sd_bus *bus, sd_bus_message *m) { - assert(bus); - assert(m); - - /* If we got a message with a file descriptor which we didn't - * want to accept, then let's drop it. How can this even - * happen? For example, when the kernel queues a message into - * an activatable names's queue which allows fds, and then is - * delivered to us later even though we ourselves did not - * negotiate it. */ - - if (bus->hello_flags & KDBUS_HELLO_MONITOR) - return 0; - - if (m->n_fds <= 0) - return 0; - - if (bus->hello_flags & KDBUS_HELLO_ACCEPT_FD) - return 0; - - if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) - return 1; /* just eat it up */ - - return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Message contains file descriptors, which I cannot accept. Sorry."); -} - -static int process_message(sd_bus *bus, sd_bus_message *m) { - int r; - - assert(bus); - assert(m); - - bus->current_message = m; - bus->iteration_counter++; - - log_debug_bus_message(m); - - r = process_hello(bus, m); - if (r != 0) - goto finish; - - r = process_reply(bus, m); - if (r != 0) - goto finish; - - r = process_fd_check(bus, m); - if (r != 0) - goto finish; - - r = process_filter(bus, m); - if (r != 0) - goto finish; - - r = process_match(bus, m); - if (r != 0) - goto finish; - - r = process_builtin(bus, m); - if (r != 0) - goto finish; - - r = bus_process_object(bus, m); - -finish: - bus->current_message = NULL; - return r; -} - -static int dispatch_track(sd_bus *bus) { - assert(bus); - - if (!bus->track_queue) - return 0; - - bus_track_dispatch(bus->track_queue); - return 1; -} - -static int process_running(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **ret) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - int r; - - assert(bus); - assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO); - - r = process_timeout(bus); - if (r != 0) - goto null_message; - - r = dispatch_wqueue(bus); - if (r != 0) - goto null_message; - - r = dispatch_track(bus); - if (r != 0) - goto null_message; - - r = dispatch_rqueue(bus, hint_priority, priority, &m); - if (r < 0) - return r; - if (!m) - goto null_message; - - r = process_message(bus, m); - if (r != 0) - goto null_message; - - if (ret) { - r = sd_bus_message_rewind(m, true); - if (r < 0) - return r; - - *ret = m; - m = NULL; - return 1; - } - - if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) { - - log_debug("Unprocessed message call sender=%s object=%s interface=%s member=%s", - strna(sd_bus_message_get_sender(m)), - strna(sd_bus_message_get_path(m)), - strna(sd_bus_message_get_interface(m)), - strna(sd_bus_message_get_member(m))); - - r = sd_bus_reply_method_errorf( - m, - SD_BUS_ERROR_UNKNOWN_OBJECT, - "Unknown object '%s'.", m->path); - if (r < 0) - return r; - } - - return 1; - -null_message: - if (r >= 0 && ret) - *ret = NULL; - - return r; -} - -static int process_closing(sd_bus *bus, sd_bus_message **ret) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - struct reply_callback *c; - int r; - - assert(bus); - assert(bus->state == BUS_CLOSING); - - c = ordered_hashmap_first(bus->reply_callbacks); - if (c) { - _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; - sd_bus_slot *slot; - - /* First, fail all outstanding method calls */ - r = bus_message_new_synthetic_error( - bus, - c->cookie, - &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Connection terminated"), - &m); - if (r < 0) - return r; - - r = bus_seal_synthetic_message(bus, m); - if (r < 0) - return r; - - if (c->timeout != 0) { - prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx); - c->timeout = 0; - } - - ordered_hashmap_remove(bus->reply_callbacks, &c->cookie); - c->cookie = 0; - - slot = container_of(c, sd_bus_slot, reply_callback); - - bus->iteration_counter++; - - bus->current_message = m; - bus->current_slot = sd_bus_slot_ref(slot); - bus->current_handler = c->callback; - bus->current_userdata = slot->userdata; - r = c->callback(m, slot->userdata, &error_buffer); - bus->current_userdata = NULL; - bus->current_handler = NULL; - bus->current_slot = NULL; - bus->current_message = NULL; - - if (slot->floating) { - bus_slot_disconnect(slot); - sd_bus_slot_unref(slot); - } - - sd_bus_slot_unref(slot); - - return bus_maybe_reply_error(m, r, &error_buffer); - } - - /* Then, synthesize a Disconnected message */ - r = sd_bus_message_new_signal( - bus, - &m, - "/org/freedesktop/DBus/Local", - "org.freedesktop.DBus.Local", - "Disconnected"); - if (r < 0) - return r; - - bus_message_set_sender_local(bus, m); - - r = bus_seal_synthetic_message(bus, m); - if (r < 0) - return r; - - sd_bus_close(bus); - - bus->current_message = m; - bus->iteration_counter++; - - r = process_filter(bus, m); - if (r != 0) - goto finish; - - r = process_match(bus, m); - if (r != 0) - goto finish; - - if (ret) { - *ret = m; - m = NULL; - } - - r = 1; - -finish: - bus->current_message = NULL; - - return r; -} - -static int bus_process_internal(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **ret) { - BUS_DONT_DESTROY(bus); - int r; - - /* Returns 0 when we didn't do anything. This should cause the - * caller to invoke sd_bus_wait() before returning the next - * time. Returns > 0 when we did something, which possibly - * means *ret is filled in with an unprocessed message. */ - - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - /* We don't allow recursively invoking sd_bus_process(). */ - assert_return(!bus->current_message, -EBUSY); - assert(!bus->current_slot); - - switch (bus->state) { - - case BUS_UNSET: - return -ENOTCONN; - - case BUS_CLOSED: - return -ECONNRESET; - - case BUS_OPENING: - r = bus_socket_process_opening(bus); - if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) { - bus_enter_closing(bus); - r = 1; - } else if (r < 0) - return r; - if (ret) - *ret = NULL; - return r; - - case BUS_AUTHENTICATING: - r = bus_socket_process_authenticating(bus); - if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) { - bus_enter_closing(bus); - r = 1; - } else if (r < 0) - return r; - - if (ret) - *ret = NULL; - - return r; - - case BUS_RUNNING: - case BUS_HELLO: - r = process_running(bus, hint_priority, priority, ret); - if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) { - bus_enter_closing(bus); - r = 1; - - if (ret) - *ret = NULL; - } - - return r; - - case BUS_CLOSING: - return process_closing(bus, ret); - } - - assert_not_reached("Unknown state"); -} - -_public_ int sd_bus_process(sd_bus *bus, sd_bus_message **ret) { - return bus_process_internal(bus, false, 0, ret); -} - -_public_ int sd_bus_process_priority(sd_bus *bus, int64_t priority, sd_bus_message **ret) { - return bus_process_internal(bus, true, priority, ret); -} - -static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec) { - struct pollfd p[2] = {}; - int r, e, n; - struct timespec ts; - usec_t m = USEC_INFINITY; - - assert(bus); - - if (bus->state == BUS_CLOSING) - return 1; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - e = sd_bus_get_events(bus); - if (e < 0) - return e; - - if (need_more) - /* The caller really needs some more data, he doesn't - * care about what's already read, or any timeouts - * except its own. */ - e |= POLLIN; - else { - usec_t until; - /* The caller wants to process if there's something to - * process, but doesn't care otherwise */ - - r = sd_bus_get_timeout(bus, &until); - if (r < 0) - return r; - if (r > 0) { - usec_t nw; - nw = now(CLOCK_MONOTONIC); - m = until > nw ? until - nw : 0; - } - } - - if (timeout_usec != (uint64_t) -1 && (m == (uint64_t) -1 || timeout_usec < m)) - m = timeout_usec; - - p[0].fd = bus->input_fd; - if (bus->output_fd == bus->input_fd) { - p[0].events = e; - n = 1; - } else { - p[0].events = e & POLLIN; - p[1].fd = bus->output_fd; - p[1].events = e & POLLOUT; - n = 2; - } - - r = ppoll(p, n, m == (uint64_t) -1 ? NULL : timespec_store(&ts, m), NULL); - if (r < 0) - return -errno; - - return r > 0 ? 1 : 0; -} - -_public_ int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec) { - - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (bus->state == BUS_CLOSING) - return 0; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (bus->rqueue_size > 0) - return 0; - - return bus_poll(bus, false, timeout_usec); -} - -_public_ int sd_bus_flush(sd_bus *bus) { - int r; - - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (bus->state == BUS_CLOSING) - return 0; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - r = bus_ensure_running(bus); - if (r < 0) - return r; - - if (bus->wqueue_size <= 0) - return 0; - - for (;;) { - r = dispatch_wqueue(bus); - if (r < 0) { - if (r == -ENOTCONN || r == -ECONNRESET || r == -EPIPE || r == -ESHUTDOWN) { - bus_enter_closing(bus); - return -ECONNRESET; - } - - return r; - } - - if (bus->wqueue_size <= 0) - return 0; - - r = bus_poll(bus, false, (uint64_t) -1); - if (r < 0) - return r; - } -} - -_public_ int sd_bus_add_filter( - sd_bus *bus, - sd_bus_slot **slot, - sd_bus_message_handler_t callback, - void *userdata) { - - sd_bus_slot *s; - - assert_return(bus, -EINVAL); - assert_return(callback, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - s = bus_slot_allocate(bus, !slot, BUS_FILTER_CALLBACK, sizeof(struct filter_callback), userdata); - if (!s) - return -ENOMEM; - - s->filter_callback.callback = callback; - - bus->filter_callbacks_modified = true; - LIST_PREPEND(callbacks, bus->filter_callbacks, &s->filter_callback); - - if (slot) - *slot = s; - - return 0; -} - -_public_ int sd_bus_add_match( - sd_bus *bus, - sd_bus_slot **slot, - const char *match, - sd_bus_message_handler_t callback, - void *userdata) { - - struct bus_match_component *components = NULL; - unsigned n_components = 0; - sd_bus_slot *s = NULL; - int r = 0; - - assert_return(bus, -EINVAL); - assert_return(match, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - r = bus_match_parse(match, &components, &n_components); - if (r < 0) - goto finish; - - s = bus_slot_allocate(bus, !slot, BUS_MATCH_CALLBACK, sizeof(struct match_callback), userdata); - if (!s) { - r = -ENOMEM; - goto finish; - } - - s->match_callback.callback = callback; - s->match_callback.cookie = ++bus->match_cookie; - - if (bus->bus_client) { - enum bus_match_scope scope; - - scope = bus_match_get_scope(components, n_components); - - /* Do not install server-side matches for matches - * against the local service, interface or bus - * path. */ - if (scope != BUS_MATCH_LOCAL) { - - if (!bus->is_kernel) { - /* When this is not a kernel transport, we - * store the original match string, so that we - * can use it to remove the match again */ - - s->match_callback.match_string = strdup(match); - if (!s->match_callback.match_string) { - r = -ENOMEM; - goto finish; - } - } - - r = bus_add_match_internal(bus, s->match_callback.match_string, components, n_components, s->match_callback.cookie); - if (r < 0) - goto finish; - - s->match_added = true; - } - } - - bus->match_callbacks_modified = true; - r = bus_match_add(&bus->match_callbacks, components, n_components, &s->match_callback); - if (r < 0) - goto finish; - - if (slot) - *slot = s; - s = NULL; - -finish: - bus_match_parse_free(components, n_components); - sd_bus_slot_unref(s); - - return r; -} - -int bus_remove_match_by_string( - sd_bus *bus, - const char *match, - sd_bus_message_handler_t callback, - void *userdata) { - - struct bus_match_component *components = NULL; - unsigned n_components = 0; - struct match_callback *c; - int r = 0; - - assert_return(bus, -EINVAL); - assert_return(match, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - r = bus_match_parse(match, &components, &n_components); - if (r < 0) - goto finish; - - r = bus_match_find(&bus->match_callbacks, components, n_components, NULL, NULL, &c); - if (r <= 0) - goto finish; - - sd_bus_slot_unref(container_of(c, sd_bus_slot, match_callback)); - -finish: - bus_match_parse_free(components, n_components); - - return r; -} - -bool bus_pid_changed(sd_bus *bus) { - assert(bus); - - /* We don't support people creating a bus connection and - * keeping it around over a fork(). Let's complain. */ - - return bus->original_pid != getpid(); -} - -static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) { - sd_bus *bus = userdata; - int r; - - assert(bus); - - r = sd_bus_process(bus, NULL); - if (r < 0) - return r; - - return 1; -} - -static int time_callback(sd_event_source *s, uint64_t usec, void *userdata) { - sd_bus *bus = userdata; - int r; - - assert(bus); - - r = sd_bus_process(bus, NULL); - if (r < 0) - return r; - - return 1; -} - -static int prepare_callback(sd_event_source *s, void *userdata) { - sd_bus *bus = userdata; - int r, e; - usec_t until; - - assert(s); - assert(bus); - - e = sd_bus_get_events(bus); - if (e < 0) - return e; - - if (bus->output_fd != bus->input_fd) { - - r = sd_event_source_set_io_events(bus->input_io_event_source, e & POLLIN); - if (r < 0) - return r; - - r = sd_event_source_set_io_events(bus->output_io_event_source, e & POLLOUT); - if (r < 0) - return r; - } else { - r = sd_event_source_set_io_events(bus->input_io_event_source, e); - if (r < 0) - return r; - } - - r = sd_bus_get_timeout(bus, &until); - if (r < 0) - return r; - if (r > 0) { - int j; - - j = sd_event_source_set_time(bus->time_event_source, until); - if (j < 0) - return j; - } - - r = sd_event_source_set_enabled(bus->time_event_source, r > 0); - if (r < 0) - return r; - - return 1; -} - -static int quit_callback(sd_event_source *event, void *userdata) { - sd_bus *bus = userdata; - - assert(event); - - sd_bus_flush(bus); - sd_bus_close(bus); - - return 1; -} - -static int attach_io_events(sd_bus *bus) { - int r; - - assert(bus); - - if (bus->input_fd < 0) - return 0; - - if (!bus->event) - return 0; - - if (!bus->input_io_event_source) { - r = sd_event_add_io(bus->event, &bus->input_io_event_source, bus->input_fd, 0, io_callback, bus); - if (r < 0) - return r; - - r = sd_event_source_set_prepare(bus->input_io_event_source, prepare_callback); - if (r < 0) - return r; - - r = sd_event_source_set_priority(bus->input_io_event_source, bus->event_priority); - if (r < 0) - return r; - - r = sd_event_source_set_description(bus->input_io_event_source, "bus-input"); - } else - r = sd_event_source_set_io_fd(bus->input_io_event_source, bus->input_fd); - - if (r < 0) - return r; - - if (bus->output_fd != bus->input_fd) { - assert(bus->output_fd >= 0); - - if (!bus->output_io_event_source) { - r = sd_event_add_io(bus->event, &bus->output_io_event_source, bus->output_fd, 0, io_callback, bus); - if (r < 0) - return r; - - r = sd_event_source_set_priority(bus->output_io_event_source, bus->event_priority); - if (r < 0) - return r; - - r = sd_event_source_set_description(bus->input_io_event_source, "bus-output"); - } else - r = sd_event_source_set_io_fd(bus->output_io_event_source, bus->output_fd); - - if (r < 0) - return r; - } - - return 0; -} - -static void detach_io_events(sd_bus *bus) { - assert(bus); - - if (bus->input_io_event_source) { - sd_event_source_set_enabled(bus->input_io_event_source, SD_EVENT_OFF); - bus->input_io_event_source = sd_event_source_unref(bus->input_io_event_source); - } - - if (bus->output_io_event_source) { - sd_event_source_set_enabled(bus->output_io_event_source, SD_EVENT_OFF); - bus->output_io_event_source = sd_event_source_unref(bus->output_io_event_source); - } -} - -_public_ int sd_bus_attach_event(sd_bus *bus, sd_event *event, int priority) { - int r; - - assert_return(bus, -EINVAL); - assert_return(!bus->event, -EBUSY); - - assert(!bus->input_io_event_source); - assert(!bus->output_io_event_source); - assert(!bus->time_event_source); - - if (event) - bus->event = sd_event_ref(event); - else { - r = sd_event_default(&bus->event); - if (r < 0) - return r; - } - - bus->event_priority = priority; - - r = sd_event_add_time(bus->event, &bus->time_event_source, CLOCK_MONOTONIC, 0, 0, time_callback, bus); - if (r < 0) - goto fail; - - r = sd_event_source_set_priority(bus->time_event_source, priority); - if (r < 0) - goto fail; - - r = sd_event_source_set_description(bus->time_event_source, "bus-time"); - if (r < 0) - goto fail; - - r = sd_event_add_exit(bus->event, &bus->quit_event_source, quit_callback, bus); - if (r < 0) - goto fail; - - r = sd_event_source_set_description(bus->quit_event_source, "bus-exit"); - if (r < 0) - goto fail; - - r = attach_io_events(bus); - if (r < 0) - goto fail; - - return 0; - -fail: - sd_bus_detach_event(bus); - return r; -} - -_public_ int sd_bus_detach_event(sd_bus *bus) { - assert_return(bus, -EINVAL); - - if (!bus->event) - return 0; - - detach_io_events(bus); - - if (bus->time_event_source) { - sd_event_source_set_enabled(bus->time_event_source, SD_EVENT_OFF); - bus->time_event_source = sd_event_source_unref(bus->time_event_source); - } - - if (bus->quit_event_source) { - sd_event_source_set_enabled(bus->quit_event_source, SD_EVENT_OFF); - bus->quit_event_source = sd_event_source_unref(bus->quit_event_source); - } - - bus->event = sd_event_unref(bus->event); - return 1; -} - -_public_ sd_event* sd_bus_get_event(sd_bus *bus) { - assert_return(bus, NULL); - - return bus->event; -} - -_public_ sd_bus_message* sd_bus_get_current_message(sd_bus *bus) { - assert_return(bus, NULL); - - return bus->current_message; -} - -_public_ sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus) { - assert_return(bus, NULL); - - return bus->current_slot; -} - -_public_ sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus) { - assert_return(bus, NULL); - - return bus->current_handler; -} - -_public_ void* sd_bus_get_current_userdata(sd_bus *bus) { - assert_return(bus, NULL); - - return bus->current_userdata; -} - -static int bus_default(int (*bus_open)(sd_bus **), sd_bus **default_bus, sd_bus **ret) { - sd_bus *b = NULL; - int r; - - assert(bus_open); - assert(default_bus); - - if (!ret) - return !!*default_bus; - - if (*default_bus) { - *ret = sd_bus_ref(*default_bus); - return 0; - } - - r = bus_open(&b); - if (r < 0) - return r; - - b->default_bus_ptr = default_bus; - b->tid = gettid(); - *default_bus = b; - - *ret = b; - return 1; -} - -_public_ int sd_bus_default_system(sd_bus **ret) { - return bus_default(sd_bus_open_system, &default_system_bus, ret); -} - - -_public_ int sd_bus_default_user(sd_bus **ret) { - return bus_default(sd_bus_open_user, &default_user_bus, ret); -} - -_public_ int sd_bus_default(sd_bus **ret) { - - const char *e; - - /* Let's try our best to reuse another cached connection. If - * the starter bus type is set, connect via our normal - * connection logic, ignoring $DBUS_STARTER_ADDRESS, so that - * we can share the connection with the user/system default - * bus. */ - - e = secure_getenv("DBUS_STARTER_BUS_TYPE"); - if (e) { - if (streq(e, "system")) - return sd_bus_default_system(ret); - else if (STR_IN_SET(e, "user", "session")) - return sd_bus_default_user(ret); - } - - /* No type is specified, so we have not other option than to - * use the starter address if it is set. */ - - e = secure_getenv("DBUS_STARTER_ADDRESS"); - if (e) { - - return bus_default(sd_bus_open, &default_starter_bus, ret); - } - - /* Finally, if nothing is set use the cached connection for - * the right scope */ - - if (cg_pid_get_owner_uid(0, NULL) >= 0) - return sd_bus_default_user(ret); - else - return sd_bus_default_system(ret); -} - -_public_ int sd_bus_get_tid(sd_bus *b, pid_t *tid) { - assert_return(b, -EINVAL); - assert_return(tid, -EINVAL); - assert_return(!bus_pid_changed(b), -ECHILD); - - if (b->tid != 0) { - *tid = b->tid; - return 0; - } - - if (b->event) - return sd_event_get_tid(b->event, tid); - - return -ENXIO; -} - -_public_ int sd_bus_path_encode(const char *prefix, const char *external_id, char **ret_path) { - _cleanup_free_ char *e = NULL; - char *ret; - - assert_return(object_path_is_valid(prefix), -EINVAL); - assert_return(external_id, -EINVAL); - assert_return(ret_path, -EINVAL); - - e = bus_label_escape(external_id); - if (!e) - return -ENOMEM; - - ret = strjoin(prefix, "/", e, NULL); - if (!ret) - return -ENOMEM; - - *ret_path = ret; - return 0; -} - -_public_ int sd_bus_path_decode(const char *path, const char *prefix, char **external_id) { - const char *e; - char *ret; - - assert_return(object_path_is_valid(path), -EINVAL); - assert_return(object_path_is_valid(prefix), -EINVAL); - assert_return(external_id, -EINVAL); - - e = object_path_startswith(path, prefix); - if (!e) { - *external_id = NULL; - return 0; - } - - ret = bus_label_unescape(e); - if (!ret) - return -ENOMEM; - - *external_id = ret; - return 1; -} - -_public_ int sd_bus_path_encode_many(char **out, const char *path_template, ...) { - _cleanup_strv_free_ char **labels = NULL; - char *path, *path_pos, **label_pos; - const char *sep, *template_pos; - size_t path_length; - va_list list; - int r; - - assert_return(out, -EINVAL); - assert_return(path_template, -EINVAL); - - path_length = strlen(path_template); - - va_start(list, path_template); - for (sep = strchr(path_template, '%'); sep; sep = strchr(sep + 1, '%')) { - const char *arg; - char *label; - - arg = va_arg(list, const char *); - if (!arg) { - va_end(list); - return -EINVAL; - } - - label = bus_label_escape(arg); - if (!label) { - va_end(list); - return -ENOMEM; - } - - r = strv_consume(&labels, label); - if (r < 0) { - va_end(list); - return r; - } - - /* add label length, but account for the format character */ - path_length += strlen(label) - 1; - } - va_end(list); - - path = malloc(path_length + 1); - if (!path) - return -ENOMEM; - - path_pos = path; - label_pos = labels; - - for (template_pos = path_template; *template_pos; ) { - sep = strchrnul(template_pos, '%'); - path_pos = mempcpy(path_pos, template_pos, sep - template_pos); - if (!*sep) - break; - - path_pos = stpcpy(path_pos, *label_pos++); - template_pos = sep + 1; - } - - *path_pos = 0; - *out = path; - return 0; -} - -_public_ int sd_bus_path_decode_many(const char *path, const char *path_template, ...) { - _cleanup_strv_free_ char **labels = NULL; - const char *template_pos, *path_pos; - char **label_pos; - va_list list; - int r; - - /* - * This decodes an object-path based on a template argument. The - * template consists of a verbatim path, optionally including special - * directives: - * - * - Each occurrence of '%' in the template matches an arbitrary - * substring of a label in the given path. At most one such - * directive is allowed per label. For each such directive, the - * caller must provide an output parameter (char **) via va_arg. If - * NULL is passed, the given label is verified, but not returned. - * For each matched label, the *decoded* label is stored in the - * passed output argument, and the caller is responsible to free - * it. Note that the output arguments are only modified if the - * actualy path matched the template. Otherwise, they're left - * untouched. - * - * This function returns <0 on error, 0 if the path does not match the - * template, 1 if it matched. - */ - - assert_return(path, -EINVAL); - assert_return(path_template, -EINVAL); - - path_pos = path; - - for (template_pos = path_template; *template_pos; ) { - const char *sep; - size_t length; - char *label; - - /* verify everything until the next '%' matches verbatim */ - sep = strchrnul(template_pos, '%'); - length = sep - template_pos; - if (strncmp(path_pos, template_pos, length)) - return 0; - - path_pos += length; - template_pos += length; - - if (!*template_pos) - break; - - /* We found the next '%' character. Everything up until here - * matched. We now skip ahead to the end of this label and make - * sure it matches the tail of the label in the path. Then we - * decode the string in-between and save it for later use. */ - - ++template_pos; /* skip over '%' */ - - sep = strchrnul(template_pos, '/'); - length = sep - template_pos; /* length of suffix to match verbatim */ - - /* verify the suffixes match */ - sep = strchrnul(path_pos, '/'); - if (sep - path_pos < (ssize_t)length || - strncmp(sep - length, template_pos, length)) - return 0; - - template_pos += length; /* skip over matched label */ - length = sep - path_pos - length; /* length of sub-label to decode */ - - /* store unescaped label for later use */ - label = bus_label_unescape_n(path_pos, length); - if (!label) - return -ENOMEM; - - r = strv_consume(&labels, label); - if (r < 0) - return r; - - path_pos = sep; /* skip decoded label and suffix */ - } - - /* end of template must match end of path */ - if (*path_pos) - return 0; - - /* copy the labels over to the caller */ - va_start(list, path_template); - for (label_pos = labels; label_pos && *label_pos; ++label_pos) { - char **arg; - - arg = va_arg(list, char **); - if (arg) - *arg = *label_pos; - else - free(*label_pos); - } - va_end(list); - - free(labels); - labels = NULL; - return 1; -} - -_public_ int sd_bus_try_close(sd_bus *bus) { - int r; - - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (!bus->is_kernel) - return -EOPNOTSUPP; - - if (!BUS_IS_OPEN(bus->state)) - return -ENOTCONN; - - if (bus->rqueue_size > 0) - return -EBUSY; - - if (bus->wqueue_size > 0) - return -EBUSY; - - r = bus_kernel_try_close(bus); - if (r < 0) - return r; - - sd_bus_close(bus); - return 0; -} - -_public_ int sd_bus_get_description(sd_bus *bus, const char **description) { - assert_return(bus, -EINVAL); - assert_return(description, -EINVAL); - assert_return(bus->description, -ENXIO); - assert_return(!bus_pid_changed(bus), -ECHILD); - - *description = bus->description; - return 0; -} - -int bus_get_root_path(sd_bus *bus) { - int r; - - if (bus->cgroup_root) - return 0; - - r = cg_get_root_path(&bus->cgroup_root); - if (r == -ENOENT) { - bus->cgroup_root = strdup("/"); - if (!bus->cgroup_root) - return -ENOMEM; - - r = 0; - } - - return r; -} - -_public_ int sd_bus_get_scope(sd_bus *bus, const char **scope) { - int r; - - assert_return(bus, -EINVAL); - assert_return(scope, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (bus->is_kernel) { - _cleanup_free_ char *n = NULL; - const char *dash; - - r = bus_kernel_get_bus_name(bus, &n); - if (r < 0) - return r; - - if (streq(n, "0-system")) { - *scope = "system"; - return 0; - } - - dash = strchr(n, '-'); - if (streq_ptr(dash, "-user")) { - *scope = "user"; - return 0; - } - } - - if (bus->is_user) { - *scope = "user"; - return 0; - } - - if (bus->is_system) { - *scope = "system"; - return 0; - } - - return -ENODATA; -} - -_public_ int sd_bus_get_address(sd_bus *bus, const char **address) { - - assert_return(bus, -EINVAL); - assert_return(address, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - if (bus->address) { - *address = bus->address; - return 0; - } - - return -ENODATA; -} - -_public_ int sd_bus_get_creds_mask(sd_bus *bus, uint64_t *mask) { - assert_return(bus, -EINVAL); - assert_return(mask, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - *mask = bus->creds_mask; - return 0; -} - -_public_ int sd_bus_is_bus_client(sd_bus *bus) { - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return bus->bus_client; -} - -_public_ int sd_bus_is_server(sd_bus *bus) { - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return bus->is_server; -} - -_public_ int sd_bus_is_anonymous(sd_bus *bus) { - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return bus->anonymous_auth; -} - -_public_ int sd_bus_is_trusted(sd_bus *bus) { - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return bus->trusted; -} - -_public_ int sd_bus_is_monitor(sd_bus *bus) { - assert_return(bus, -EINVAL); - assert_return(!bus_pid_changed(bus), -ECHILD); - - return !!(bus->hello_flags & KDBUS_HELLO_MONITOR); -} - -static void flush_close(sd_bus *bus) { - if (!bus) - return; - - /* Flushes and closes the specified bus. We take a ref before, - * to ensure the flushing does not cause the bus to be - * unreferenced. */ - - sd_bus_flush_close_unref(sd_bus_ref(bus)); -} - -_public_ void sd_bus_default_flush_close(void) { - flush_close(default_starter_bus); - flush_close(default_user_bus); - flush_close(default_system_bus); -} diff --git a/src/libsystemd/sd-bus/test-bus-benchmark.c b/src/libsystemd/sd-bus/test-bus-benchmark.c deleted file mode 100644 index 56ac2ab3dd..0000000000 --- a/src/libsystemd/sd-bus/test-bus-benchmark.c +++ /dev/null @@ -1,371 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <sys/wait.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-internal.h" -#include "bus-kernel.h" -#include "bus-util.h" -#include "def.h" -#include "fd-util.h" -#include "time-util.h" -#include "util.h" - -#define MAX_SIZE (2*1024*1024) - -static usec_t arg_loop_usec = 100 * USEC_PER_MSEC; - -typedef enum Type { - TYPE_KDBUS, - TYPE_LEGACY, - TYPE_DIRECT, -} Type; - -static void server(sd_bus *b, size_t *result) { - int r; - - for (;;) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - - r = sd_bus_process(b, &m); - assert_se(r >= 0); - - if (r == 0) - assert_se(sd_bus_wait(b, USEC_INFINITY) >= 0); - if (!m) - continue; - - if (sd_bus_message_is_method_call(m, "benchmark.server", "Ping")) - assert_se(sd_bus_reply_method_return(m, NULL) >= 0); - else if (sd_bus_message_is_method_call(m, "benchmark.server", "Work")) { - const void *p; - size_t sz; - - /* Make sure the mmap is mapped */ - assert_se(sd_bus_message_read_array(m, 'y', &p, &sz) > 0); - - r = sd_bus_reply_method_return(m, NULL); - assert_se(r >= 0); - } else if (sd_bus_message_is_method_call(m, "benchmark.server", "Exit")) { - uint64_t res; - assert_se(sd_bus_message_read(m, "t", &res) > 0); - - *result = res; - return; - - } else if (!sd_bus_message_is_signal(m, NULL, NULL)) - assert_not_reached("Unknown method"); - } -} - -static void transaction(sd_bus *b, size_t sz, const char *server_name) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; - uint8_t *p; - - assert_se(sd_bus_message_new_method_call(b, &m, server_name, "/", "benchmark.server", "Work") >= 0); - assert_se(sd_bus_message_append_array_space(m, 'y', sz, (void**) &p) >= 0); - - memset(p, 0x80, sz); - - assert_se(sd_bus_call(b, m, 0, NULL, &reply) >= 0); -} - -static void client_bisect(const char *address, const char *server_name) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *x = NULL; - size_t lsize, rsize, csize; - sd_bus *b; - int r; - - r = sd_bus_new(&b); - assert_se(r >= 0); - - r = sd_bus_set_address(b, address); - assert_se(r >= 0); - - r = sd_bus_start(b); - assert_se(r >= 0); - - r = sd_bus_call_method(b, server_name, "/", "benchmark.server", "Ping", NULL, NULL, NULL); - assert_se(r >= 0); - - lsize = 1; - rsize = MAX_SIZE; - - printf("SIZE\tCOPY\tMEMFD\n"); - - for (;;) { - usec_t t; - unsigned n_copying, n_memfd; - - csize = (lsize + rsize) / 2; - - if (csize <= lsize) - break; - - if (csize <= 0) - break; - - printf("%zu\t", csize); - - b->use_memfd = 0; - - t = now(CLOCK_MONOTONIC); - for (n_copying = 0;; n_copying++) { - transaction(b, csize, server_name); - if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) - break; - } - printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); - - b->use_memfd = -1; - - t = now(CLOCK_MONOTONIC); - for (n_memfd = 0;; n_memfd++) { - transaction(b, csize, server_name); - if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) - break; - } - printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec)); - - if (n_copying == n_memfd) - break; - - if (n_copying > n_memfd) - lsize = csize; - else - rsize = csize; - } - - b->use_memfd = 1; - assert_se(sd_bus_message_new_method_call(b, &x, server_name, "/", "benchmark.server", "Exit") >= 0); - assert_se(sd_bus_message_append(x, "t", csize) >= 0); - assert_se(sd_bus_send(b, x, NULL) >= 0); - - sd_bus_unref(b); -} - -static void client_chart(Type type, const char *address, const char *server_name, int fd) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *x = NULL; - size_t csize; - sd_bus *b; - int r; - - r = sd_bus_new(&b); - assert_se(r >= 0); - - if (type == TYPE_DIRECT) { - r = sd_bus_set_fd(b, fd, fd); - assert_se(r >= 0); - } else { - r = sd_bus_set_address(b, address); - assert_se(r >= 0); - - r = sd_bus_set_bus_client(b, true); - assert_se(r >= 0); - } - - r = sd_bus_start(b); - assert_se(r >= 0); - - r = sd_bus_call_method(b, server_name, "/", "benchmark.server", "Ping", NULL, NULL, NULL); - assert_se(r >= 0); - - switch (type) { - case TYPE_KDBUS: - printf("SIZE\tCOPY\tMEMFD\n"); - break; - case TYPE_LEGACY: - printf("SIZE\tLEGACY\n"); - break; - case TYPE_DIRECT: - printf("SIZE\tDIRECT\n"); - break; - } - - for (csize = 1; csize <= MAX_SIZE; csize *= 2) { - usec_t t; - unsigned n_copying, n_memfd; - - printf("%zu\t", csize); - - if (type == TYPE_KDBUS) { - b->use_memfd = 0; - - t = now(CLOCK_MONOTONIC); - for (n_copying = 0;; n_copying++) { - transaction(b, csize, server_name); - if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) - break; - } - - printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); - - b->use_memfd = -1; - } - - t = now(CLOCK_MONOTONIC); - for (n_memfd = 0;; n_memfd++) { - transaction(b, csize, server_name); - if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) - break; - } - - printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec)); - } - - b->use_memfd = 1; - assert_se(sd_bus_message_new_method_call(b, &x, server_name, "/", "benchmark.server", "Exit") >= 0); - assert_se(sd_bus_message_append(x, "t", csize) >= 0); - assert_se(sd_bus_send(b, x, NULL) >= 0); - - sd_bus_unref(b); -} - -int main(int argc, char *argv[]) { - enum { - MODE_BISECT, - MODE_CHART, - } mode = MODE_BISECT; - Type type = TYPE_KDBUS; - int i, pair[2] = { -1, -1 }; - _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL, *server_name = NULL; - _cleanup_close_ int bus_ref = -1; - const char *unique; - cpu_set_t cpuset; - size_t result; - sd_bus *b; - pid_t pid; - int r; - - for (i = 1; i < argc; i++) { - if (streq(argv[i], "chart")) { - mode = MODE_CHART; - continue; - } else if (streq(argv[i], "legacy")) { - type = TYPE_LEGACY; - continue; - } else if (streq(argv[i], "direct")) { - type = TYPE_DIRECT; - continue; - } - - assert_se(parse_sec(argv[i], &arg_loop_usec) >= 0); - } - - assert_se(!MODE_BISECT || TYPE_KDBUS); - - assert_se(arg_loop_usec > 0); - - if (type == TYPE_KDBUS) { - assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0); - - bus_ref = bus_kernel_create_bus(name, false, &bus_name); - if (bus_ref == -ENOENT) - exit(EXIT_TEST_SKIP); - - assert_se(bus_ref >= 0); - - address = strappend("kernel:path=", bus_name); - assert_se(address); - } else if (type == TYPE_LEGACY) { - const char *e; - - e = secure_getenv("DBUS_SESSION_BUS_ADDRESS"); - assert_se(e); - - address = strdup(e); - assert_se(address); - } - - r = sd_bus_new(&b); - assert_se(r >= 0); - - if (type == TYPE_DIRECT) { - assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) >= 0); - - r = sd_bus_set_fd(b, pair[0], pair[0]); - assert_se(r >= 0); - - r = sd_bus_set_server(b, true, SD_ID128_NULL); - assert_se(r >= 0); - } else { - r = sd_bus_set_address(b, address); - assert_se(r >= 0); - - r = sd_bus_set_bus_client(b, true); - assert_se(r >= 0); - } - - r = sd_bus_start(b); - assert_se(r >= 0); - - if (type != TYPE_DIRECT) { - r = sd_bus_get_unique_name(b, &unique); - assert_se(r >= 0); - - server_name = strdup(unique); - assert_se(server_name); - } - - sync(); - setpriority(PRIO_PROCESS, 0, -19); - - pid = fork(); - assert_se(pid >= 0); - - if (pid == 0) { - CPU_ZERO(&cpuset); - CPU_SET(0, &cpuset); - pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset); - - safe_close(bus_ref); - sd_bus_unref(b); - - switch (mode) { - case MODE_BISECT: - client_bisect(address, server_name); - break; - - case MODE_CHART: - client_chart(type, address, server_name, pair[1]); - break; - } - - _exit(0); - } - - CPU_ZERO(&cpuset); - CPU_SET(1, &cpuset); - pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset); - - server(b, &result); - - if (mode == MODE_BISECT) - printf("Copying/memfd are equally fast at %zu bytes\n", result); - - assert_se(waitpid(pid, NULL, 0) == pid); - - safe_close(pair[1]); - sd_bus_unref(b); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-chat.c b/src/libsystemd/sd-bus/test-bus-chat.c deleted file mode 100644 index 048c0d19e2..0000000000 --- a/src/libsystemd/sd-bus/test-bus-chat.c +++ /dev/null @@ -1,560 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <fcntl.h> -#include <pthread.h> -#include <stdlib.h> -#include <unistd.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-error.h" -#include "bus-internal.h" -#include "bus-match.h" -#include "bus-util.h" -#include "fd-util.h" -#include "formats-util.h" -#include "log.h" -#include "macro.h" -#include "util.h" - -static int match_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { - log_info("Match triggered! interface=%s member=%s", strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member(m))); - return 0; -} - -static int object_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { - int r; - - if (sd_bus_message_is_method_error(m, NULL)) - return 0; - - if (sd_bus_message_is_method_call(m, "org.object.test", "Foobar")) { - log_info("Invoked Foobar() on %s", sd_bus_message_get_path(m)); - - r = sd_bus_reply_method_return(m, NULL); - if (r < 0) - return log_error_errno(r, "Failed to send reply: %m"); - - return 1; - } - - return 0; -} - -static int server_init(sd_bus **_bus) { - sd_bus *bus = NULL; - sd_id128_t id; - int r; - const char *unique; - - assert_se(_bus); - - r = sd_bus_open_user(&bus); - if (r < 0) { - log_error_errno(r, "Failed to connect to user bus: %m"); - goto fail; - } - - r = sd_bus_get_bus_id(bus, &id); - if (r < 0) { - log_error_errno(r, "Failed to get server ID: %m"); - goto fail; - } - - r = sd_bus_get_unique_name(bus, &unique); - if (r < 0) { - log_error_errno(r, "Failed to get unique name: %m"); - goto fail; - } - - log_info("Peer ID is " SD_ID128_FORMAT_STR ".", SD_ID128_FORMAT_VAL(id)); - log_info("Unique ID: %s", unique); - log_info("Can send file handles: %i", sd_bus_can_send(bus, 'h')); - - r = sd_bus_request_name(bus, "org.freedesktop.systemd.test", 0); - if (r < 0) { - log_error_errno(r, "Failed to acquire name: %m"); - goto fail; - } - - r = sd_bus_add_fallback(bus, NULL, "/foo/bar", object_callback, NULL); - if (r < 0) { - log_error_errno(r, "Failed to add object: %m"); - goto fail; - } - - r = sd_bus_add_match(bus, NULL, "type='signal',interface='foo.bar',member='Notify'", match_callback, NULL); - if (r < 0) { - log_error_errno(r, "Failed to add match: %m"); - goto fail; - } - - r = sd_bus_add_match(bus, NULL, "type='signal',interface='org.freedesktop.DBus',member='NameOwnerChanged'", match_callback, NULL); - if (r < 0) { - log_error_errno(r, "Failed to add match: %m"); - goto fail; - } - - bus_match_dump(&bus->match_callbacks, 0); - - *_bus = bus; - return 0; - -fail: - sd_bus_unref(bus); - return r; -} - -static int server(sd_bus *bus) { - int r; - bool client1_gone = false, client2_gone = false; - - while (!client1_gone || !client2_gone) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - pid_t pid = 0; - const char *label = NULL; - - r = sd_bus_process(bus, &m); - if (r < 0) { - log_error_errno(r, "Failed to process requests: %m"); - goto fail; - } - - if (r == 0) { - r = sd_bus_wait(bus, (uint64_t) -1); - if (r < 0) { - log_error_errno(r, "Failed to wait: %m"); - goto fail; - } - - continue; - } - - if (!m) - continue; - - sd_bus_creds_get_pid(sd_bus_message_get_creds(m), &pid); - sd_bus_creds_get_selinux_context(sd_bus_message_get_creds(m), &label); - log_info("Got message! member=%s pid="PID_FMT" label=%s", - strna(sd_bus_message_get_member(m)), - pid, - strna(label)); - /* bus_message_dump(m); */ - /* sd_bus_message_rewind(m, true); */ - - if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "LowerCase")) { - const char *hello; - _cleanup_free_ char *lowercase = NULL; - - r = sd_bus_message_read(m, "s", &hello); - if (r < 0) { - log_error_errno(r, "Failed to get parameter: %m"); - goto fail; - } - - lowercase = strdup(hello); - if (!lowercase) { - r = log_oom(); - goto fail; - } - - ascii_strlower(lowercase); - - r = sd_bus_reply_method_return(m, "s", lowercase); - if (r < 0) { - log_error_errno(r, "Failed to send reply: %m"); - goto fail; - } - } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "ExitClient1")) { - - r = sd_bus_reply_method_return(m, NULL); - if (r < 0) { - log_error_errno(r, "Failed to send reply: %m"); - goto fail; - } - - client1_gone = true; - } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "ExitClient2")) { - - r = sd_bus_reply_method_return(m, NULL); - if (r < 0) { - log_error_errno(r, "Failed to send reply: %m"); - goto fail; - } - - client2_gone = true; - } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Slow")) { - - sleep(1); - - r = sd_bus_reply_method_return(m, NULL); - if (r < 0) { - log_error_errno(r, "Failed to send reply: %m"); - goto fail; - } - - } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "FileDescriptor")) { - int fd; - static const char x = 'X'; - - r = sd_bus_message_read(m, "h", &fd); - if (r < 0) { - log_error_errno(r, "Failed to get parameter: %m"); - goto fail; - } - - log_info("Received fd=%d", fd); - - if (write(fd, &x, 1) < 0) { - log_error_errno(errno, "Failed to write to fd: %m"); - safe_close(fd); - goto fail; - } - - r = sd_bus_reply_method_return(m, NULL); - if (r < 0) { - log_error_errno(r, "Failed to send reply: %m"); - goto fail; - } - - } else if (sd_bus_message_is_method_call(m, NULL, NULL)) { - - r = sd_bus_reply_method_error( - m, - &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method.")); - if (r < 0) { - log_error_errno(r, "Failed to send reply: %m"); - goto fail; - } - } - } - - r = 0; - -fail: - if (bus) { - sd_bus_flush(bus); - sd_bus_unref(bus); - } - - return r; -} - -static void* client1(void*p) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - const char *hello; - int r; - _cleanup_close_pair_ int pp[2] = { -1, -1 }; - char x; - - r = sd_bus_open_user(&bus); - if (r < 0) { - log_error_errno(r, "Failed to connect to user bus: %m"); - goto finish; - } - - r = sd_bus_call_method( - bus, - "org.freedesktop.systemd.test", - "/", - "org.freedesktop.systemd.test", - "LowerCase", - &error, - &reply, - "s", - "HELLO"); - if (r < 0) { - log_error_errno(r, "Failed to issue method call: %m"); - goto finish; - } - - r = sd_bus_message_read(reply, "s", &hello); - if (r < 0) { - log_error_errno(r, "Failed to get string: %m"); - goto finish; - } - - assert_se(streq(hello, "hello")); - - if (pipe2(pp, O_CLOEXEC|O_NONBLOCK) < 0) { - log_error_errno(errno, "Failed to allocate pipe: %m"); - r = -errno; - goto finish; - } - - log_info("Sending fd=%d", pp[1]); - - r = sd_bus_call_method( - bus, - "org.freedesktop.systemd.test", - "/", - "org.freedesktop.systemd.test", - "FileDescriptor", - &error, - NULL, - "h", - pp[1]); - if (r < 0) { - log_error_errno(r, "Failed to issue method call: %m"); - goto finish; - } - - errno = 0; - if (read(pp[0], &x, 1) <= 0) { - log_error("Failed to read from pipe: %s", errno ? strerror(errno) : "early read"); - goto finish; - } - - r = 0; - -finish: - if (bus) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *q; - - r = sd_bus_message_new_method_call( - bus, - &q, - "org.freedesktop.systemd.test", - "/", - "org.freedesktop.systemd.test", - "ExitClient1"); - if (r < 0) - log_error_errno(r, "Failed to allocate method call: %m"); - else - sd_bus_send(bus, q, NULL); - - } - - return INT_TO_PTR(r); -} - -static int quit_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { - bool *x = userdata; - - log_error("Quit callback: %s", strerror(sd_bus_message_get_errno(m))); - - *x = 1; - return 1; -} - -static void* client2(void*p) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; - _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - bool quit = false; - const char *mid; - int r; - - r = sd_bus_open_user(&bus); - if (r < 0) { - log_error_errno(r, "Failed to connect to user bus: %m"); - goto finish; - } - - r = sd_bus_message_new_method_call( - bus, - &m, - "org.freedesktop.systemd.test", - "/foo/bar/waldo/piep", - "org.object.test", - "Foobar"); - if (r < 0) { - log_error_errno(r, "Failed to allocate method call: %m"); - goto finish; - } - - r = sd_bus_send(bus, m, NULL); - if (r < 0) { - log_error("Failed to issue method call: %s", bus_error_message(&error, -r)); - goto finish; - } - - m = sd_bus_message_unref(m); - - r = sd_bus_message_new_signal( - bus, - &m, - "/foobar", - "foo.bar", - "Notify"); - if (r < 0) { - log_error_errno(r, "Failed to allocate signal: %m"); - goto finish; - } - - r = sd_bus_send(bus, m, NULL); - if (r < 0) { - log_error("Failed to issue signal: %s", bus_error_message(&error, -r)); - goto finish; - } - - m = sd_bus_message_unref(m); - - r = sd_bus_message_new_method_call( - bus, - &m, - "org.freedesktop.systemd.test", - "/", - "org.freedesktop.DBus.Peer", - "GetMachineId"); - if (r < 0) { - log_error_errno(r, "Failed to allocate method call: %m"); - goto finish; - } - - r = sd_bus_call(bus, m, 0, &error, &reply); - if (r < 0) { - log_error("Failed to issue method call: %s", bus_error_message(&error, -r)); - goto finish; - } - - r = sd_bus_message_read(reply, "s", &mid); - if (r < 0) { - log_error_errno(r, "Failed to parse machine ID: %m"); - goto finish; - } - - log_info("Machine ID is %s.", mid); - - m = sd_bus_message_unref(m); - - r = sd_bus_message_new_method_call( - bus, - &m, - "org.freedesktop.systemd.test", - "/", - "org.freedesktop.systemd.test", - "Slow"); - if (r < 0) { - log_error_errno(r, "Failed to allocate method call: %m"); - goto finish; - } - - reply = sd_bus_message_unref(reply); - - r = sd_bus_call(bus, m, 200 * USEC_PER_MSEC, &error, &reply); - if (r < 0) - log_info("Failed to issue method call: %s", bus_error_message(&error, -r)); - else - log_info("Slow call succeed."); - - m = sd_bus_message_unref(m); - - r = sd_bus_message_new_method_call( - bus, - &m, - "org.freedesktop.systemd.test", - "/", - "org.freedesktop.systemd.test", - "Slow"); - if (r < 0) { - log_error_errno(r, "Failed to allocate method call: %m"); - goto finish; - } - - r = sd_bus_call_async(bus, NULL, m, quit_callback, &quit, 200 * USEC_PER_MSEC); - if (r < 0) { - log_info("Failed to issue method call: %s", bus_error_message(&error, -r)); - goto finish; - } - - while (!quit) { - r = sd_bus_process(bus, NULL); - if (r < 0) { - log_error_errno(r, "Failed to process requests: %m"); - goto finish; - } - if (r == 0) { - r = sd_bus_wait(bus, (uint64_t) -1); - if (r < 0) { - log_error_errno(r, "Failed to wait: %m"); - goto finish; - } - } - } - - r = 0; - -finish: - if (bus) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *q; - - r = sd_bus_message_new_method_call( - bus, - &q, - "org.freedesktop.systemd.test", - "/", - "org.freedesktop.systemd.test", - "ExitClient2"); - if (r < 0) { - log_error_errno(r, "Failed to allocate method call: %m"); - goto finish; - } - - (void) sd_bus_send(bus, q, NULL); - } - - return INT_TO_PTR(r); -} - -int main(int argc, char *argv[]) { - pthread_t c1, c2; - sd_bus *bus; - void *p; - int q, r; - - r = server_init(&bus); - if (r < 0) { - log_info("Failed to connect to bus, skipping tests."); - return EXIT_TEST_SKIP; - } - - log_info("Initialized..."); - - r = pthread_create(&c1, NULL, client1, bus); - if (r != 0) - return EXIT_FAILURE; - - r = pthread_create(&c2, NULL, client2, bus); - if (r != 0) - return EXIT_FAILURE; - - r = server(bus); - - q = pthread_join(c1, &p); - if (q != 0) - return EXIT_FAILURE; - if (PTR_TO_INT(p) < 0) - return EXIT_FAILURE; - - q = pthread_join(c2, &p); - if (q != 0) - return EXIT_FAILURE; - if (PTR_TO_INT(p) < 0) - return EXIT_FAILURE; - - if (r < 0) - return EXIT_FAILURE; - - return EXIT_SUCCESS; -} diff --git a/src/libsystemd/sd-bus/test-bus-cleanup.c b/src/libsystemd/sd-bus/test-bus-cleanup.c deleted file mode 100644 index 250a5b2908..0000000000 --- a/src/libsystemd/sd-bus/test-bus-cleanup.c +++ /dev/null @@ -1,95 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Zbigniew Jędrzejewski-Szmek - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdio.h> - -#include "sd-bus.h" - -#include "bus-internal.h" -#include "bus-message.h" -#include "bus-util.h" -#include "refcnt.h" - -static void test_bus_new(void) { - _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; - - assert_se(sd_bus_new(&bus) == 0); - printf("after new: refcount %u\n", REFCNT_GET(bus->n_ref)); -} - -static int test_bus_open(void) { - _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; - int r; - - r = sd_bus_open_system(&bus); - if (r == -ECONNREFUSED || r == -ENOENT) - return r; - - assert_se(r >= 0); - printf("after open: refcount %u\n", REFCNT_GET(bus->n_ref)); - - return 0; -} - -static void test_bus_new_method_call(void) { - sd_bus *bus = NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - - assert_se(sd_bus_open_system(&bus) >= 0); - - assert_se(sd_bus_message_new_method_call(bus, &m, "a.service.name", "/an/object/path", "an.interface.name", "AMethodName") >= 0); - - printf("after message_new_method_call: refcount %u\n", REFCNT_GET(bus->n_ref)); - - sd_bus_flush_close_unref(bus); - printf("after bus_flush_close_unref: refcount %u\n", m->n_ref); -} - -static void test_bus_new_signal(void) { - sd_bus *bus = NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - - assert_se(sd_bus_open_system(&bus) >= 0); - - assert_se(sd_bus_message_new_signal(bus, &m, "/an/object/path", "an.interface.name", "Name") >= 0); - - printf("after message_new_signal: refcount %u\n", REFCNT_GET(bus->n_ref)); - - sd_bus_flush_close_unref(bus); - printf("after bus_flush_close_unref: refcount %u\n", m->n_ref); -} - -int main(int argc, char **argv) { - int r; - - log_parse_environment(); - log_open(); - - test_bus_new(); - r = test_bus_open(); - if (r < 0) { - log_info("Failed to connect to bus, skipping tests."); - return EXIT_TEST_SKIP; - } - - test_bus_new_method_call(); - test_bus_new_signal(); - - return EXIT_SUCCESS; -} diff --git a/src/libsystemd/sd-bus/test-bus-creds.c b/src/libsystemd/sd-bus/test-bus-creds.c deleted file mode 100644 index e9ef483bdd..0000000000 --- a/src/libsystemd/sd-bus/test-bus-creds.c +++ /dev/null @@ -1,50 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "bus-dump.h" -#include "bus-util.h" -#include "cgroup-util.h" - -int main(int argc, char *argv[]) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - int r; - - if (cg_unified() == -ENOMEDIUM) { - puts("Skipping test: /sys/fs/cgroup/ not available"); - return EXIT_TEST_SKIP; - } - - r = sd_bus_creds_new_from_pid(&creds, 0, _SD_BUS_CREDS_ALL); - assert_se(r >= 0); - - bus_creds_dump(creds, NULL, true); - - creds = sd_bus_creds_unref(creds); - - r = sd_bus_creds_new_from_pid(&creds, 1, _SD_BUS_CREDS_ALL); - if (r != -EACCES) { - assert_se(r >= 0); - putchar('\n'); - bus_creds_dump(creds, NULL, true); - } - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-error.c b/src/libsystemd/sd-bus/test-bus-error.c deleted file mode 100644 index 46d18abd29..0000000000 --- a/src/libsystemd/sd-bus/test-bus-error.c +++ /dev/null @@ -1,232 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "bus-common-errors.h" -#include "bus-error.h" -#include "bus-util.h" -#include "errno-list.h" - -static void test_error(void) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL, second = SD_BUS_ERROR_NULL; - const sd_bus_error const_error = SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_FILE_EXISTS, "const error"); - const sd_bus_error temporarily_const_error = { - .name = SD_BUS_ERROR_ACCESS_DENIED, - .message = "oh! no", - ._need_free = -1 - }; - - assert_se(!sd_bus_error_is_set(&error)); - assert_se(sd_bus_error_set(&error, SD_BUS_ERROR_NOT_SUPPORTED, "xxx") == -EOPNOTSUPP); - assert_se(streq(error.name, SD_BUS_ERROR_NOT_SUPPORTED)); - assert_se(streq(error.message, "xxx")); - assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_NOT_SUPPORTED)); - assert_se(sd_bus_error_get_errno(&error) == EOPNOTSUPP); - assert_se(sd_bus_error_is_set(&error)); - sd_bus_error_free(&error); - - /* Check with no error */ - assert_se(!sd_bus_error_is_set(&error)); - assert_se(sd_bus_error_setf(&error, NULL, "yyy %i", -1) == 0); - assert_se(error.name == NULL); - assert_se(error.message == NULL); - assert_se(!sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND)); - assert_se(sd_bus_error_get_errno(&error) == 0); - assert_se(!sd_bus_error_is_set(&error)); - - assert_se(sd_bus_error_setf(&error, SD_BUS_ERROR_FILE_NOT_FOUND, "yyy %i", -1) == -ENOENT); - assert_se(streq(error.name, SD_BUS_ERROR_FILE_NOT_FOUND)); - assert_se(streq(error.message, "yyy -1")); - assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND)); - assert_se(sd_bus_error_get_errno(&error) == ENOENT); - assert_se(sd_bus_error_is_set(&error)); - - assert_se(!sd_bus_error_is_set(&second)); - assert_se(second._need_free == 0); - assert_se(error._need_free > 0); - assert_se(sd_bus_error_copy(&second, &error) == -ENOENT); - assert_se(second._need_free > 0); - assert_se(streq(error.name, second.name)); - assert_se(streq(error.message, second.message)); - assert_se(sd_bus_error_get_errno(&second) == ENOENT); - assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_FILE_NOT_FOUND)); - assert_se(sd_bus_error_is_set(&second)); - - sd_bus_error_free(&error); - sd_bus_error_free(&second); - - assert_se(!sd_bus_error_is_set(&second)); - assert_se(const_error._need_free == 0); - assert_se(sd_bus_error_copy(&second, &const_error) == -EEXIST); - assert_se(second._need_free == 0); - assert_se(streq(const_error.name, second.name)); - assert_se(streq(const_error.message, second.message)); - assert_se(sd_bus_error_get_errno(&second) == EEXIST); - assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_FILE_EXISTS)); - assert_se(sd_bus_error_is_set(&second)); - sd_bus_error_free(&second); - - assert_se(!sd_bus_error_is_set(&second)); - assert_se(temporarily_const_error._need_free < 0); - assert_se(sd_bus_error_copy(&second, &temporarily_const_error) == -EACCES); - assert_se(second._need_free > 0); - assert_se(streq(temporarily_const_error.name, second.name)); - assert_se(streq(temporarily_const_error.message, second.message)); - assert_se(sd_bus_error_get_errno(&second) == EACCES); - assert_se(sd_bus_error_has_name(&second, SD_BUS_ERROR_ACCESS_DENIED)); - assert_se(sd_bus_error_is_set(&second)); - - assert_se(!sd_bus_error_is_set(&error)); - assert_se(sd_bus_error_set_const(&error, "System.Error.EUCLEAN", "Hallo") == -EUCLEAN); - assert_se(streq(error.name, "System.Error.EUCLEAN")); - assert_se(streq(error.message, "Hallo")); - assert_se(sd_bus_error_has_name(&error, "System.Error.EUCLEAN")); - assert_se(sd_bus_error_get_errno(&error) == EUCLEAN); - assert_se(sd_bus_error_is_set(&error)); - sd_bus_error_free(&error); - - assert_se(!sd_bus_error_is_set(&error)); - assert_se(sd_bus_error_set_errno(&error, EBUSY) == -EBUSY); - assert_se(streq(error.name, "System.Error.EBUSY")); - assert_se(streq(error.message, strerror(EBUSY))); - assert_se(sd_bus_error_has_name(&error, "System.Error.EBUSY")); - assert_se(sd_bus_error_get_errno(&error) == EBUSY); - assert_se(sd_bus_error_is_set(&error)); - sd_bus_error_free(&error); - - assert_se(!sd_bus_error_is_set(&error)); - assert_se(sd_bus_error_set_errnof(&error, EIO, "Waldi %c", 'X') == -EIO); - assert_se(streq(error.name, SD_BUS_ERROR_IO_ERROR)); - assert_se(streq(error.message, "Waldi X")); - assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_IO_ERROR)); - assert_se(sd_bus_error_get_errno(&error) == EIO); - assert_se(sd_bus_error_is_set(&error)); - sd_bus_error_free(&error); - - /* Check with no error */ - assert_se(!sd_bus_error_is_set(&error)); - assert_se(sd_bus_error_set_errnof(&error, 0, "Waldi %c", 'X') == 0); - assert_se(error.name == NULL); - assert_se(error.message == NULL); - assert_se(!sd_bus_error_has_name(&error, SD_BUS_ERROR_IO_ERROR)); - assert_se(sd_bus_error_get_errno(&error) == 0); - assert_se(!sd_bus_error_is_set(&error)); -} - -extern const sd_bus_error_map __start_BUS_ERROR_MAP[]; -extern const sd_bus_error_map __stop_BUS_ERROR_MAP[]; - -static void dump_mapping_table(void) { - const sd_bus_error_map *m; - - printf("----- errno mappings ------\n"); - m = __start_BUS_ERROR_MAP; - while (m < __stop_BUS_ERROR_MAP) { - - if (m->code == BUS_ERROR_MAP_END_MARKER) { - m = ALIGN8_PTR(m+1); - continue; - } - - printf("%s -> %i/%s\n", strna(m->name), m->code, strna(errno_to_name(m->code))); - m ++; - } - printf("---------------------------\n"); -} - -static void test_errno_mapping_standard(void) { - assert_se(sd_bus_error_set(NULL, "System.Error.EUCLEAN", NULL) == -EUCLEAN); - assert_se(sd_bus_error_set(NULL, "System.Error.EBUSY", NULL) == -EBUSY); - assert_se(sd_bus_error_set(NULL, "System.Error.EINVAL", NULL) == -EINVAL); - assert_se(sd_bus_error_set(NULL, "System.Error.WHATSIT", NULL) == -EIO); -} - -BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map test_errors[] = { - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error", 5), - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-2", 52), - SD_BUS_ERROR_MAP_END -}; - -BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map test_errors2[] = { - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-3", 33), - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-4", 44), - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-33", 333), - SD_BUS_ERROR_MAP_END -}; - -static const sd_bus_error_map test_errors3[] = { - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-88", 888), - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-99", 999), - SD_BUS_ERROR_MAP_END -}; - -static const sd_bus_error_map test_errors4[] = { - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-77", 777), - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-78", 778), - SD_BUS_ERROR_MAP_END -}; - -static const sd_bus_error_map test_errors_bad1[] = { - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-1", 0), - SD_BUS_ERROR_MAP_END -}; - -static const sd_bus_error_map test_errors_bad2[] = { - SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-1", -1), - SD_BUS_ERROR_MAP_END -}; - -static void test_errno_mapping_custom(void) { - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error", NULL) == -5); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-2", NULL) == -52); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-x", NULL) == -EIO); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-33", NULL) == -333); - - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-88", NULL) == -EIO); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-99", NULL) == -EIO); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-77", NULL) == -EIO); - - assert_se(sd_bus_error_add_map(test_errors3) > 0); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-88", NULL) == -888); - assert_se(sd_bus_error_add_map(test_errors4) > 0); - assert_se(sd_bus_error_add_map(test_errors4) == 0); - assert_se(sd_bus_error_add_map(test_errors3) == 0); - - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-99", NULL) == -999); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-77", NULL) == -777); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-78", NULL) == -778); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-2", NULL) == -52); - assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-y", NULL) == -EIO); - - assert_se(sd_bus_error_set(NULL, BUS_ERROR_NO_SUCH_UNIT, NULL) == -ENOENT); - - assert_se(sd_bus_error_add_map(test_errors_bad1) == -EINVAL); - assert_se(sd_bus_error_add_map(test_errors_bad2) == -EINVAL); -} - -int main(int argc, char *argv[]) { - dump_mapping_table(); - - test_error(); - test_errno_mapping_standard(); - test_errno_mapping_custom(); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-gvariant.c b/src/libsystemd/sd-bus/test-bus-gvariant.c deleted file mode 100644 index 83f114a0fe..0000000000 --- a/src/libsystemd/sd-bus/test-bus-gvariant.c +++ /dev/null @@ -1,224 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#ifdef HAVE_GLIB -#include <glib.h> -#endif - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-dump.h" -#include "bus-gvariant.h" -#include "bus-internal.h" -#include "bus-message.h" -#include "bus-util.h" -#include "macro.h" -#include "util.h" - -static void test_bus_gvariant_is_fixed_size(void) { - assert_se(bus_gvariant_is_fixed_size("") > 0); - assert_se(bus_gvariant_is_fixed_size("()") > 0); - assert_se(bus_gvariant_is_fixed_size("y") > 0); - assert_se(bus_gvariant_is_fixed_size("u") > 0); - assert_se(bus_gvariant_is_fixed_size("b") > 0); - assert_se(bus_gvariant_is_fixed_size("n") > 0); - assert_se(bus_gvariant_is_fixed_size("q") > 0); - assert_se(bus_gvariant_is_fixed_size("i") > 0); - assert_se(bus_gvariant_is_fixed_size("t") > 0); - assert_se(bus_gvariant_is_fixed_size("d") > 0); - assert_se(bus_gvariant_is_fixed_size("s") == 0); - assert_se(bus_gvariant_is_fixed_size("o") == 0); - assert_se(bus_gvariant_is_fixed_size("g") == 0); - assert_se(bus_gvariant_is_fixed_size("h") > 0); - assert_se(bus_gvariant_is_fixed_size("ay") == 0); - assert_se(bus_gvariant_is_fixed_size("v") == 0); - assert_se(bus_gvariant_is_fixed_size("(u)") > 0); - assert_se(bus_gvariant_is_fixed_size("(uuuuy)") > 0); - assert_se(bus_gvariant_is_fixed_size("(uusuuy)") == 0); - assert_se(bus_gvariant_is_fixed_size("a{ss}") == 0); - assert_se(bus_gvariant_is_fixed_size("((u)yyy(b(iiii)))") > 0); - assert_se(bus_gvariant_is_fixed_size("((u)yyy(b(iiivi)))") == 0); -} - -static void test_bus_gvariant_get_size(void) { - assert_se(bus_gvariant_get_size("") == 0); - assert_se(bus_gvariant_get_size("()") == 1); - assert_se(bus_gvariant_get_size("y") == 1); - assert_se(bus_gvariant_get_size("u") == 4); - assert_se(bus_gvariant_get_size("b") == 1); - assert_se(bus_gvariant_get_size("n") == 2); - assert_se(bus_gvariant_get_size("q") == 2); - assert_se(bus_gvariant_get_size("i") == 4); - assert_se(bus_gvariant_get_size("t") == 8); - assert_se(bus_gvariant_get_size("d") == 8); - assert_se(bus_gvariant_get_size("s") < 0); - assert_se(bus_gvariant_get_size("o") < 0); - assert_se(bus_gvariant_get_size("g") < 0); - assert_se(bus_gvariant_get_size("h") == 4); - assert_se(bus_gvariant_get_size("ay") < 0); - assert_se(bus_gvariant_get_size("v") < 0); - assert_se(bus_gvariant_get_size("(u)") == 4); - assert_se(bus_gvariant_get_size("(uuuuy)") == 20); - assert_se(bus_gvariant_get_size("(uusuuy)") < 0); - assert_se(bus_gvariant_get_size("a{ss}") < 0); - assert_se(bus_gvariant_get_size("((u)yyy(b(iiii)))") == 28); - assert_se(bus_gvariant_get_size("((u)yyy(b(iiivi)))") < 0); - assert_se(bus_gvariant_get_size("((b)(t))") == 16); - assert_se(bus_gvariant_get_size("((b)(b)(t))") == 16); - assert_se(bus_gvariant_get_size("(bt)") == 16); - assert_se(bus_gvariant_get_size("((t)(b))") == 16); - assert_se(bus_gvariant_get_size("(tb)") == 16); - assert_se(bus_gvariant_get_size("((b)(b))") == 2); - assert_se(bus_gvariant_get_size("((t)(t))") == 16); -} - -static void test_bus_gvariant_get_alignment(void) { - assert_se(bus_gvariant_get_alignment("") == 1); - assert_se(bus_gvariant_get_alignment("()") == 1); - assert_se(bus_gvariant_get_alignment("y") == 1); - assert_se(bus_gvariant_get_alignment("b") == 1); - assert_se(bus_gvariant_get_alignment("u") == 4); - assert_se(bus_gvariant_get_alignment("s") == 1); - assert_se(bus_gvariant_get_alignment("o") == 1); - assert_se(bus_gvariant_get_alignment("g") == 1); - assert_se(bus_gvariant_get_alignment("v") == 8); - assert_se(bus_gvariant_get_alignment("h") == 4); - assert_se(bus_gvariant_get_alignment("i") == 4); - assert_se(bus_gvariant_get_alignment("t") == 8); - assert_se(bus_gvariant_get_alignment("x") == 8); - assert_se(bus_gvariant_get_alignment("q") == 2); - assert_se(bus_gvariant_get_alignment("n") == 2); - assert_se(bus_gvariant_get_alignment("d") == 8); - assert_se(bus_gvariant_get_alignment("ay") == 1); - assert_se(bus_gvariant_get_alignment("as") == 1); - assert_se(bus_gvariant_get_alignment("au") == 4); - assert_se(bus_gvariant_get_alignment("an") == 2); - assert_se(bus_gvariant_get_alignment("ans") == 2); - assert_se(bus_gvariant_get_alignment("ant") == 8); - assert_se(bus_gvariant_get_alignment("(ss)") == 1); - assert_se(bus_gvariant_get_alignment("(ssu)") == 4); - assert_se(bus_gvariant_get_alignment("a(ssu)") == 4); - assert_se(bus_gvariant_get_alignment("(u)") == 4); - assert_se(bus_gvariant_get_alignment("(uuuuy)") == 4); - assert_se(bus_gvariant_get_alignment("(uusuuy)") == 4); - assert_se(bus_gvariant_get_alignment("a{ss}") == 1); - assert_se(bus_gvariant_get_alignment("((u)yyy(b(iiii)))") == 4); - assert_se(bus_gvariant_get_alignment("((u)yyy(b(iiivi)))") == 8); - assert_se(bus_gvariant_get_alignment("((b)(t))") == 8); - assert_se(bus_gvariant_get_alignment("((b)(b)(t))") == 8); - assert_se(bus_gvariant_get_alignment("(bt)") == 8); - assert_se(bus_gvariant_get_alignment("((t)(b))") == 8); - assert_se(bus_gvariant_get_alignment("(tb)") == 8); - assert_se(bus_gvariant_get_alignment("((b)(b))") == 1); - assert_se(bus_gvariant_get_alignment("((t)(t))") == 8); -} - -static void test_marshal(void) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *n = NULL; - _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; - _cleanup_free_ void *blob; - size_t sz; - int r; - - r = sd_bus_open_system(&bus); - if (r < 0) - exit(EXIT_TEST_SKIP); - - bus->message_version = 2; /* dirty hack to enable gvariant */ - - assert_se(sd_bus_message_new_method_call(bus, &m, "a.service.name", "/an/object/path/which/is/really/really/long/so/that/we/hit/the/eight/bit/boundary/by/quite/some/margin/to/test/this/stuff/that/it/really/works", "an.interface.name", "AMethodName") >= 0); - - assert_cc(sizeof(struct bus_header) == 16); - - assert_se(sd_bus_message_append(m, - "a(usv)", 3, - 4711, "first-string-parameter", "(st)", "X", (uint64_t) 1111, - 4712, "second-string-parameter", "(a(si))", 2, "Y", 5, "Z", 6, - 4713, "third-string-parameter", "(uu)", 1, 2) >= 0); - - assert_se(bus_message_seal(m, 4711, 0) >= 0); - -#ifdef HAVE_GLIB - { - GVariant *v; - char *t; - -#if !defined(GLIB_VERSION_2_36) - g_type_init(); -#endif - - v = g_variant_new_from_data(G_VARIANT_TYPE("(yyyyuta{tv})"), m->header, sizeof(struct bus_header) + m->fields_size, false, NULL, NULL); - assert_se(g_variant_is_normal_form(v)); - t = g_variant_print(v, TRUE); - printf("%s\n", t); - g_free(t); - g_variant_unref(v); - - v = g_variant_new_from_data(G_VARIANT_TYPE("(a(usv))"), m->body.data, m->user_body_size, false, NULL, NULL); - assert_se(g_variant_is_normal_form(v)); - t = g_variant_print(v, TRUE); - printf("%s\n", t); - g_free(t); - g_variant_unref(v); - } -#endif - - assert_se(bus_message_dump(m, NULL, BUS_MESSAGE_DUMP_WITH_HEADER) >= 0); - - assert_se(bus_message_get_blob(m, &blob, &sz) >= 0); - -#ifdef HAVE_GLIB - { - GVariant *v; - char *t; - - v = g_variant_new_from_data(G_VARIANT_TYPE("(yyyyuta{tv}v)"), blob, sz, false, NULL, NULL); - assert_se(g_variant_is_normal_form(v)); - t = g_variant_print(v, TRUE); - printf("%s\n", t); - g_free(t); - g_variant_unref(v); - } -#endif - - assert_se(bus_message_from_malloc(bus, blob, sz, NULL, 0, NULL, &n) >= 0); - blob = NULL; - - assert_se(bus_message_dump(n, NULL, BUS_MESSAGE_DUMP_WITH_HEADER) >= 0); - - m = sd_bus_message_unref(m); - - assert_se(sd_bus_message_new_method_call(bus, &m, "a.x", "/a/x", "a.x", "Ax") >= 0); - - assert_se(sd_bus_message_append(m, "as", 0) >= 0); - - assert_se(bus_message_seal(m, 4712, 0) >= 0); - assert_se(bus_message_dump(m, NULL, BUS_MESSAGE_DUMP_WITH_HEADER) >= 0); -} - -int main(int argc, char *argv[]) { - - test_bus_gvariant_is_fixed_size(); - test_bus_gvariant_get_size(); - test_bus_gvariant_get_alignment(); - test_marshal(); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-introspect.c b/src/libsystemd/sd-bus/test-bus-introspect.c deleted file mode 100644 index 4425cfae26..0000000000 --- a/src/libsystemd/sd-bus/test-bus-introspect.c +++ /dev/null @@ -1,63 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-introspect.h" -#include "log.h" - -static int prop_get(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { - return -EINVAL; -} - -static int prop_set(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { - return -EINVAL; -} - -static const sd_bus_vtable vtable[] = { - SD_BUS_VTABLE_START(0), - SD_BUS_METHOD("Hello", "ssas", "a(uu)", NULL, 0), - SD_BUS_METHOD("DeprecatedHello", "", "", NULL, SD_BUS_VTABLE_DEPRECATED), - SD_BUS_METHOD("DeprecatedHelloNoReply", "", "", NULL, SD_BUS_VTABLE_DEPRECATED|SD_BUS_VTABLE_METHOD_NO_REPLY), - SD_BUS_SIGNAL("Wowza", "sss", 0), - SD_BUS_SIGNAL("DeprecatedWowza", "ut", SD_BUS_VTABLE_DEPRECATED), - SD_BUS_WRITABLE_PROPERTY("AProperty", "s", prop_get, prop_set, 0, 0), - SD_BUS_PROPERTY("AReadOnlyDeprecatedProperty", "(ut)", prop_get, 0, SD_BUS_VTABLE_DEPRECATED), - SD_BUS_PROPERTY("ChangingProperty", "t", prop_get, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("Invalidating", "t", prop_get, 0, SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION), - SD_BUS_PROPERTY("Constant", "t", prop_get, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EXPLICIT), - SD_BUS_VTABLE_END -}; - -int main(int argc, char *argv[]) { - struct introspect intro; - - log_set_max_level(LOG_DEBUG); - - assert_se(introspect_begin(&intro, false) >= 0); - - fprintf(intro.f, " <interface name=\"org.foo\">\n"); - assert_se(introspect_write_interface(&intro, vtable) >= 0); - fputs(" </interface>\n", intro.f); - - fflush(intro.f); - fputs(intro.introspection, stdout); - - introspect_free(&intro); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-kernel-bloom.c b/src/libsystemd/sd-bus/test-bus-kernel-bloom.c deleted file mode 100644 index eb6179d7d2..0000000000 --- a/src/libsystemd/sd-bus/test-bus-kernel-bloom.c +++ /dev/null @@ -1,141 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-kernel.h" -#include "bus-util.h" -#include "fd-util.h" -#include "log.h" -#include "util.h" - -static int test_match(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { - int *found = userdata; - - *found = 1; - - return 0; -} - -static void test_one( - const char *path, - const char *interface, - const char *member, - bool as_list, - const char *arg0, - const char *match, - bool good) { - - _cleanup_close_ int bus_ref = -1; - _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - sd_bus *a, *b; - int r, found = 0; - - assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0); - - bus_ref = bus_kernel_create_bus(name, false, &bus_name); - if (bus_ref == -ENOENT) - exit(EXIT_TEST_SKIP); - - assert_se(bus_ref >= 0); - - address = strappend("kernel:path=", bus_name); - assert_se(address); - - r = sd_bus_new(&a); - assert_se(r >= 0); - - r = sd_bus_new(&b); - assert_se(r >= 0); - - r = sd_bus_set_address(a, address); - assert_se(r >= 0); - - r = sd_bus_set_address(b, address); - assert_se(r >= 0); - - r = sd_bus_start(a); - assert_se(r >= 0); - - r = sd_bus_start(b); - assert_se(r >= 0); - - log_debug("match"); - r = sd_bus_add_match(b, NULL, match, test_match, &found); - assert_se(r >= 0); - - log_debug("signal"); - - if (as_list) - r = sd_bus_emit_signal(a, path, interface, member, "as", 1, arg0); - else - r = sd_bus_emit_signal(a, path, interface, member, "s", arg0); - assert_se(r >= 0); - - r = sd_bus_process(b, &m); - assert_se(r >= 0 && good == !!found); - - sd_bus_unref(a); - sd_bus_unref(b); -} - -int main(int argc, char *argv[]) { - log_set_max_level(LOG_DEBUG); - - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo/tuut'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "interface='waldo.com'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "member='Piep'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "member='Pi_ep'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "arg0='foobar'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "arg0='foo_bar'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", true, "foobar", "arg0='foobar'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", true, "foobar", "arg0='foo_bar'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", true, "foobar", "arg0has='foobar'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", true, "foobar", "arg0has='foo_bar'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo',interface='waldo.com',member='Piep',arg0='foobar'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo',interface='waldo.com',member='Piep',arg0='foobar2'", false); - - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo/quux'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo/bar/waldo'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo/bar'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/quux'", false); - test_one("/", "waldo.com", "Piep", false, "foobar", "path_namespace='/'", true); - - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/bar/waldo/'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path='/foo/'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo/bar/waldo/'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "foobar", "path_namespace='/foo/'", true); - - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "/foo/bar/waldo", "arg0path='/foo/'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "/foo", "arg0path='/foo'", true); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "/foo", "arg0path='/foo/bar/waldo'", false); - test_one("/foo/bar/waldo", "waldo.com", "Piep", false, "/foo/", "arg0path='/foo/bar/waldo'", true); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-kernel.c b/src/libsystemd/sd-bus/test-bus-kernel.c deleted file mode 100644 index 2214817312..0000000000 --- a/src/libsystemd/sd-bus/test-bus-kernel.c +++ /dev/null @@ -1,190 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <fcntl.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-dump.h" -#include "bus-kernel.h" -#include "bus-util.h" -#include "fd-util.h" -#include "log.h" -#include "util.h" - -int main(int argc, char *argv[]) { - _cleanup_close_ int bus_ref = -1; - _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL, *bname = NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - const char *ua = NULL, *ub = NULL, *the_string = NULL; - sd_bus *a, *b; - int r, pipe_fds[2]; - const char *nn; - - log_set_max_level(LOG_DEBUG); - - assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0); - - bus_ref = bus_kernel_create_bus(name, false, &bus_name); - if (bus_ref == -ENOENT) - return EXIT_TEST_SKIP; - - assert_se(bus_ref >= 0); - - address = strappend("kernel:path=", bus_name); - assert_se(address); - - r = sd_bus_new(&a); - assert_se(r >= 0); - - r = sd_bus_new(&b); - assert_se(r >= 0); - - r = sd_bus_set_description(a, "a"); - assert_se(r >= 0); - - r = sd_bus_set_address(a, address); - assert_se(r >= 0); - - r = sd_bus_set_address(b, address); - assert_se(r >= 0); - - assert_se(sd_bus_negotiate_timestamp(a, 1) >= 0); - assert_se(sd_bus_negotiate_creds(a, true, _SD_BUS_CREDS_ALL) >= 0); - - assert_se(sd_bus_negotiate_timestamp(b, 0) >= 0); - assert_se(sd_bus_negotiate_creds(b, true, 0) >= 0); - - r = sd_bus_start(a); - assert_se(r >= 0); - - r = sd_bus_start(b); - assert_se(r >= 0); - - assert_se(sd_bus_negotiate_timestamp(b, 1) >= 0); - assert_se(sd_bus_negotiate_creds(b, true, _SD_BUS_CREDS_ALL) >= 0); - - r = sd_bus_get_unique_name(a, &ua); - assert_se(r >= 0); - printf("unique a: %s\n", ua); - - r = sd_bus_get_description(a, &nn); - assert_se(r >= 0); - printf("name of a: %s\n", nn); - - r = sd_bus_get_unique_name(b, &ub); - assert_se(r >= 0); - printf("unique b: %s\n", ub); - - r = sd_bus_get_description(b, &nn); - assert_se(r >= 0); - printf("name of b: %s\n", nn); - - assert_se(bus_kernel_get_bus_name(b, &bname) >= 0); - assert_se(endswith(bname, name)); - - r = sd_bus_call_method(a, "this.doesnt.exist", "/foo", "meh.mah", "muh", &error, NULL, "s", "yayayay"); - assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_SERVICE_UNKNOWN)); - assert_se(r == -EHOSTUNREACH); - - r = sd_bus_add_match(b, NULL, "interface='waldo.com',member='Piep'", NULL, NULL); - assert_se(r >= 0); - - r = sd_bus_emit_signal(a, "/foo/bar/waldo", "waldo.com", "Piep", "sss", "I am a string", "/this/is/a/path", "and.this.a.domain.name"); - assert_se(r >= 0); - - r = sd_bus_try_close(b); - assert_se(r == -EBUSY); - - r = sd_bus_process_priority(b, -10, &m); - assert_se(r == 0); - - r = sd_bus_process(b, &m); - assert_se(r > 0); - assert_se(m); - - bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - assert_se(sd_bus_message_rewind(m, true) >= 0); - - r = sd_bus_message_read(m, "s", &the_string); - assert_se(r >= 0); - assert_se(streq(the_string, "I am a string")); - - sd_bus_message_unref(m); - m = NULL; - - r = sd_bus_request_name(a, "net.x0pointer.foobar", 0); - assert_se(r >= 0); - - r = sd_bus_message_new_method_call(b, &m, "net.x0pointer.foobar", "/a/path", "an.inter.face", "AMethod"); - assert_se(r >= 0); - - assert_se(pipe2(pipe_fds, O_CLOEXEC) >= 0); - - assert_se(write(pipe_fds[1], "x", 1) == 1); - - pipe_fds[1] = safe_close(pipe_fds[1]); - - r = sd_bus_message_append(m, "h", pipe_fds[0]); - assert_se(r >= 0); - - pipe_fds[0] = safe_close(pipe_fds[0]); - - r = sd_bus_send(b, m, NULL); - assert_se(r >= 0); - - for (;;) { - sd_bus_message_unref(m); - m = NULL; - r = sd_bus_process(a, &m); - assert_se(r > 0); - assert_se(m); - - bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - assert_se(sd_bus_message_rewind(m, true) >= 0); - - if (sd_bus_message_is_method_call(m, "an.inter.face", "AMethod")) { - int fd; - char x; - - r = sd_bus_message_read(m, "h", &fd); - assert_se(r >= 0); - - assert_se(read(fd, &x, 1) == 1); - assert_se(x == 'x'); - break; - } - } - - r = sd_bus_release_name(a, "net.x0pointer.foobar"); - assert_se(r >= 0); - - r = sd_bus_release_name(a, "net.x0pointer.foobar"); - assert_se(r == -ESRCH); - - r = sd_bus_try_close(a); - assert_se(r >= 0); - - sd_bus_unref(a); - sd_bus_unref(b); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-marshal.c b/src/libsystemd/sd-bus/test-bus-marshal.c deleted file mode 100644 index a28cc5b79e..0000000000 --- a/src/libsystemd/sd-bus/test-bus-marshal.c +++ /dev/null @@ -1,432 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <math.h> -#include <stdlib.h> - -#ifdef HAVE_GLIB -#include <gio/gio.h> -#endif - -#ifdef HAVE_DBUS -#include <dbus/dbus.h> -#endif - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-dump.h" -#include "bus-label.h" -#include "bus-message.h" -#include "bus-util.h" -#include "fd-util.h" -#include "hexdecoct.h" -#include "log.h" -#include "util.h" - -static void test_bus_path_encode_unique(void) { - _cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL; - - assert_se(bus_path_encode_unique(NULL, "/foo/bar", "some.sender", "a.suffix", &a) >= 0 && streq_ptr(a, "/foo/bar/some_2esender/a_2esuffix")); - assert_se(bus_path_decode_unique(a, "/foo/bar", &b, &c) > 0 && streq_ptr(b, "some.sender") && streq_ptr(c, "a.suffix")); - assert_se(bus_path_decode_unique(a, "/bar/foo", &d, &d) == 0 && !d); - assert_se(bus_path_decode_unique("/foo/bar/onlyOneSuffix", "/foo/bar", &d, &d) == 0 && !d); - assert_se(bus_path_decode_unique("/foo/bar/_/_", "/foo/bar", &d, &e) > 0 && streq_ptr(d, "") && streq_ptr(e, "")); -} - -static void test_bus_path_encode(void) { - _cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL, *f = NULL; - - assert_se(sd_bus_path_encode("/foo/bar", "waldo", &a) >= 0 && streq(a, "/foo/bar/waldo")); - assert_se(sd_bus_path_decode(a, "/waldo", &b) == 0 && b == NULL); - assert_se(sd_bus_path_decode(a, "/foo/bar", &b) > 0 && streq(b, "waldo")); - - assert_se(sd_bus_path_encode("xxxx", "waldo", &c) < 0); - assert_se(sd_bus_path_encode("/foo/", "waldo", &c) < 0); - - assert_se(sd_bus_path_encode("/foo/bar", "", &c) >= 0 && streq(c, "/foo/bar/_")); - assert_se(sd_bus_path_decode(c, "/foo/bar", &d) > 0 && streq(d, "")); - - assert_se(sd_bus_path_encode("/foo/bar", "foo.bar", &e) >= 0 && streq(e, "/foo/bar/foo_2ebar")); - assert_se(sd_bus_path_decode(e, "/foo/bar", &f) > 0 && streq(f, "foo.bar")); -} - -static void test_bus_path_encode_many(void) { - _cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL, *f = NULL; - - assert_se(sd_bus_path_decode_many("/foo/bar", "/prefix/%", NULL) == 0); - assert_se(sd_bus_path_decode_many("/prefix/bar", "/prefix/%bar", NULL) == 1); - assert_se(sd_bus_path_decode_many("/foo/bar", "/prefix/%/suffix", NULL) == 0); - assert_se(sd_bus_path_decode_many("/prefix/foobar/suffix", "/prefix/%/suffix", &a) == 1 && streq_ptr(a, "foobar")); - assert_se(sd_bus_path_decode_many("/prefix/one_foo_two/mid/three_bar_four/suffix", "/prefix/one_%_two/mid/three_%_four/suffix", &b, &c) == 1 && streq_ptr(b, "foo") && streq_ptr(c, "bar")); - assert_se(sd_bus_path_decode_many("/prefix/one_foo_two/mid/three_bar_four/suffix", "/prefix/one_%_two/mid/three_%_four/suffix", NULL, &d) == 1 && streq_ptr(d, "bar")); - - assert_se(sd_bus_path_decode_many("/foo/bar", "/foo/bar/%", NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/bar%", NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%/bar", NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%bar", NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/bar/suffix") == 1); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%%/suffix", NULL, NULL) == 0); /* multiple '%' are treated verbatim */ - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%/suffi", NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%/suffix", &e) == 1 && streq_ptr(e, "bar")); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/foo/%/%", NULL, NULL) == 1); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%/%/%", NULL, NULL, NULL) == 1); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "%/%/%", NULL, NULL, NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%/%", NULL, NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%/%/", NULL, NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%/", NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "/%", NULL) == 0); - assert_se(sd_bus_path_decode_many("/foo/bar/suffix", "%", NULL) == 0); - - assert_se(sd_bus_path_encode_many(&f, "/prefix/one_%_two/mid/three_%_four/suffix", "foo", "bar") >= 0 && streq_ptr(f, "/prefix/one_foo_two/mid/three_bar_four/suffix")); -} - -static void test_bus_label_escape_one(const char *a, const char *b) { - _cleanup_free_ char *t = NULL, *x = NULL, *y = NULL; - - assert_se(t = bus_label_escape(a)); - assert_se(streq(t, b)); - - assert_se(x = bus_label_unescape(t)); - assert_se(streq(a, x)); - - assert_se(y = bus_label_unescape(b)); - assert_se(streq(a, y)); -} - -static void test_bus_label_escape(void) { - test_bus_label_escape_one("foo123bar", "foo123bar"); - test_bus_label_escape_one("foo.bar", "foo_2ebar"); - test_bus_label_escape_one("foo_2ebar", "foo_5f2ebar"); - test_bus_label_escape_one("", "_"); - test_bus_label_escape_one("_", "_5f"); - test_bus_label_escape_one("1", "_31"); - test_bus_label_escape_one(":1", "_3a1"); -} - -int main(int argc, char *argv[]) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *copy = NULL; - int r, boolean; - const char *x, *x2, *y, *z, *a, *b, *c, *d, *a_signature; - uint8_t u, v; - void *buffer = NULL; - size_t sz; - char *h; - const int32_t integer_array[] = { -1, -2, 0, 1, 2 }, *return_array; - char *s; - _cleanup_free_ char *first = NULL, *second = NULL, *third = NULL; - _cleanup_fclose_ FILE *ms = NULL; - size_t first_size = 0, second_size = 0, third_size = 0; - _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; - double dbl; - uint64_t u64; - - r = sd_bus_default_system(&bus); - if (r < 0) - return EXIT_TEST_SKIP; - - r = sd_bus_message_new_method_call(bus, &m, "foobar.waldo", "/", "foobar.waldo", "Piep"); - assert_se(r >= 0); - - r = sd_bus_message_append(m, ""); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "s", "a string"); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "s", NULL); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "asg", 2, "string #1", "string #2", "sba(tt)ss"); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "sass", "foobar", 5, "foo", "bar", "waldo", "piep", "pap", "after"); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "a{yv}", 2, 3, "s", "foo", 5, "s", "waldo"); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "y(ty)y(yt)y", 8, 777ULL, 7, 9, 77, 7777ULL, 10); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "()"); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "ba(ss)", 255, 3, "aaa", "1", "bbb", "2", "ccc", "3"); - assert_se(r >= 0); - - r = sd_bus_message_open_container(m, 'a', "s"); - assert_se(r >= 0); - - r = sd_bus_message_append_basic(m, 's', "foobar"); - assert_se(r >= 0); - - r = sd_bus_message_append_basic(m, 's', "waldo"); - assert_se(r >= 0); - - r = sd_bus_message_close_container(m); - assert_se(r >= 0); - - r = sd_bus_message_append_string_space(m, 5, &s); - assert_se(r >= 0); - strcpy(s, "hallo"); - - r = sd_bus_message_append_array(m, 'i', integer_array, sizeof(integer_array)); - assert_se(r >= 0); - - r = sd_bus_message_append_array(m, 'u', NULL, 0); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "a(stdo)", 1, "foo", 815ULL, 47.0, "/"); - assert_se(r >= 0); - - r = bus_message_seal(m, 4711, 0); - assert_se(r >= 0); - - bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - ms = open_memstream(&first, &first_size); - bus_message_dump(m, ms, 0); - fflush(ms); - assert_se(!ferror(ms)); - - r = bus_message_get_blob(m, &buffer, &sz); - assert_se(r >= 0); - - h = hexmem(buffer, sz); - assert_se(h); - - log_info("message size = %zu, contents =\n%s", sz, h); - free(h); - -#ifdef HAVE_GLIB - { - GDBusMessage *g; - char *p; - -#if !defined(GLIB_VERSION_2_36) - g_type_init(); -#endif - - g = g_dbus_message_new_from_blob(buffer, sz, 0, NULL); - p = g_dbus_message_print(g, 0); - log_info("%s", p); - g_free(p); - g_object_unref(g); - } -#endif - -#ifdef HAVE_DBUS - { - DBusMessage *w; - DBusError error; - - dbus_error_init(&error); - - w = dbus_message_demarshal(buffer, sz, &error); - if (!w) - log_error("%s", error.message); - else - dbus_message_unref(w); - - dbus_error_free(&error); - } -#endif - - m = sd_bus_message_unref(m); - - r = bus_message_from_malloc(bus, buffer, sz, NULL, 0, NULL, &m); - assert_se(r >= 0); - - bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - fclose(ms); - ms = open_memstream(&second, &second_size); - bus_message_dump(m, ms, 0); - fflush(ms); - assert_se(!ferror(ms)); - assert_se(first_size == second_size); - assert_se(memcmp(first, second, first_size) == 0); - - assert_se(sd_bus_message_rewind(m, true) >= 0); - - r = sd_bus_message_read(m, "ssasg", &x, &x2, 2, &y, &z, &a_signature); - assert_se(r > 0); - assert_se(streq(x, "a string")); - assert_se(streq(x2, "")); - assert_se(streq(y, "string #1")); - assert_se(streq(z, "string #2")); - assert_se(streq(a_signature, "sba(tt)ss")); - - r = sd_bus_message_read(m, "sass", &x, 5, &y, &z, &a, &b, &c, &d); - assert_se(r > 0); - assert_se(streq(x, "foobar")); - assert_se(streq(y, "foo")); - assert_se(streq(z, "bar")); - assert_se(streq(a, "waldo")); - assert_se(streq(b, "piep")); - assert_se(streq(c, "pap")); - assert_se(streq(d, "after")); - - r = sd_bus_message_read(m, "a{yv}", 2, &u, "s", &x, &v, "s", &y); - assert_se(r > 0); - assert_se(u == 3); - assert_se(streq(x, "foo")); - assert_se(v == 5); - assert_se(streq(y, "waldo")); - - r = sd_bus_message_read(m, "y(ty)", &v, &u64, &u); - assert_se(r > 0); - assert_se(v == 8); - assert_se(u64 == 777); - assert_se(u == 7); - - r = sd_bus_message_read(m, "y(yt)", &v, &u, &u64); - assert_se(r > 0); - assert_se(v == 9); - assert_se(u == 77); - assert_se(u64 == 7777); - - r = sd_bus_message_read(m, "y", &v); - assert_se(r > 0); - assert_se(v == 10); - - r = sd_bus_message_read(m, "()"); - assert_se(r > 0); - - r = sd_bus_message_read(m, "ba(ss)", &boolean, 3, &x, &y, &a, &b, &c, &d); - assert_se(r > 0); - assert_se(boolean); - assert_se(streq(x, "aaa")); - assert_se(streq(y, "1")); - assert_se(streq(a, "bbb")); - assert_se(streq(b, "2")); - assert_se(streq(c, "ccc")); - assert_se(streq(d, "3")); - - assert_se(sd_bus_message_verify_type(m, 'a', "s") > 0); - - r = sd_bus_message_read(m, "as", 2, &x, &y); - assert_se(r > 0); - assert_se(streq(x, "foobar")); - assert_se(streq(y, "waldo")); - - r = sd_bus_message_read_basic(m, 's', &s); - assert_se(r > 0); - assert_se(streq(s, "hallo")); - - r = sd_bus_message_read_array(m, 'i', (const void**) &return_array, &sz); - assert_se(r > 0); - assert_se(sz == sizeof(integer_array)); - assert_se(memcmp(integer_array, return_array, sz) == 0); - - r = sd_bus_message_read_array(m, 'u', (const void**) &return_array, &sz); - assert_se(r > 0); - assert_se(sz == 0); - - r = sd_bus_message_read(m, "a(stdo)", 1, &x, &u64, &dbl, &y); - assert_se(r > 0); - assert_se(streq(x, "foo")); - assert_se(u64 == 815ULL); - assert_se(fabs(dbl - 47.0) < 0.1); - assert_se(streq(y, "/")); - - r = sd_bus_message_peek_type(m, NULL, NULL); - assert_se(r == 0); - - r = sd_bus_message_new_method_call(bus, ©, "foobar.waldo", "/", "foobar.waldo", "Piep"); - assert_se(r >= 0); - - r = sd_bus_message_rewind(m, true); - assert_se(r >= 0); - - r = sd_bus_message_copy(copy, m, true); - assert_se(r >= 0); - - r = bus_message_seal(copy, 4712, 0); - assert_se(r >= 0); - - fclose(ms); - ms = open_memstream(&third, &third_size); - bus_message_dump(copy, ms, 0); - fflush(ms); - assert_se(!ferror(ms)); - - printf("<%.*s>\n", (int) first_size, first); - printf("<%.*s>\n", (int) third_size, third); - - assert_se(first_size == third_size); - assert_se(memcmp(first, third, third_size) == 0); - - r = sd_bus_message_rewind(m, true); - assert_se(r >= 0); - - assert_se(sd_bus_message_verify_type(m, 's', NULL) > 0); - - r = sd_bus_message_skip(m, "ssasg"); - assert_se(r > 0); - - assert_se(sd_bus_message_verify_type(m, 's', NULL) > 0); - - r = sd_bus_message_skip(m, "sass"); - assert_se(r >= 0); - - assert_se(sd_bus_message_verify_type(m, 'a', "{yv}") > 0); - - r = sd_bus_message_skip(m, "a{yv}y(ty)y(yt)y()"); - assert_se(r >= 0); - - assert_se(sd_bus_message_verify_type(m, 'b', NULL) > 0); - - r = sd_bus_message_read(m, "b", &boolean); - assert_se(r > 0); - assert_se(boolean); - - r = sd_bus_message_enter_container(m, 0, NULL); - assert_se(r > 0); - - r = sd_bus_message_read(m, "(ss)", &x, &y); - assert_se(r > 0); - - r = sd_bus_message_read(m, "(ss)", &a, &b); - assert_se(r > 0); - - r = sd_bus_message_read(m, "(ss)", &c, &d); - assert_se(r > 0); - - r = sd_bus_message_read(m, "(ss)", &x, &y); - assert_se(r == 0); - - r = sd_bus_message_exit_container(m); - assert_se(r >= 0); - - assert_se(streq(x, "aaa")); - assert_se(streq(y, "1")); - assert_se(streq(a, "bbb")); - assert_se(streq(b, "2")); - assert_se(streq(c, "ccc")); - assert_se(streq(d, "3")); - - test_bus_label_escape(); - test_bus_path_encode(); - test_bus_path_encode_unique(); - test_bus_path_encode_many(); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-match.c b/src/libsystemd/sd-bus/test-bus-match.c deleted file mode 100644 index 29c4529f95..0000000000 --- a/src/libsystemd/sd-bus/test-bus-match.c +++ /dev/null @@ -1,159 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-match.h" -#include "bus-message.h" -#include "bus-slot.h" -#include "bus-util.h" -#include "log.h" -#include "macro.h" - -static bool mask[32]; - -static int filter(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { - log_info("Ran %u", PTR_TO_UINT(userdata)); - assert_se(PTR_TO_UINT(userdata) < ELEMENTSOF(mask)); - mask[PTR_TO_UINT(userdata)] = true; - return 0; -} - -static bool mask_contains(unsigned a[], unsigned n) { - unsigned i, j; - - for (i = 0; i < ELEMENTSOF(mask); i++) { - bool found = false; - - for (j = 0; j < n; j++) - if (a[j] == i) { - found = true; - break; - } - - if (found != mask[i]) - return false; - } - - return true; -} - -static int match_add(sd_bus_slot *slots, struct bus_match_node *root, const char *match, int value) { - struct bus_match_component *components = NULL; - unsigned n_components = 0; - sd_bus_slot *s; - int r; - - s = slots + value; - zero(*s); - - r = bus_match_parse(match, &components, &n_components); - if (r < 0) - return r; - - s->userdata = INT_TO_PTR(value); - s->match_callback.callback = filter; - - r = bus_match_add(root, components, n_components, &s->match_callback); - bus_match_parse_free(components, n_components); - - return r; -} - -static void test_match_scope(const char *match, enum bus_match_scope scope) { - struct bus_match_component *components = NULL; - unsigned n_components = 0; - - assert_se(bus_match_parse(match, &components, &n_components) >= 0); - assert_se(bus_match_get_scope(components, n_components) == scope); - bus_match_parse_free(components, n_components); -} - -int main(int argc, char *argv[]) { - struct bus_match_node root = { - .type = BUS_MATCH_ROOT, - }; - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; - _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; - enum bus_match_node_type i; - sd_bus_slot slots[19]; - int r; - - r = sd_bus_open_system(&bus); - if (r < 0) - return EXIT_TEST_SKIP; - - assert_se(match_add(slots, &root, "arg2='wal\\'do',sender='foo',type='signal',interface='bar.x',", 1) >= 0); - assert_se(match_add(slots, &root, "arg2='wal\\'do2',sender='foo',type='signal',interface='bar.x',", 2) >= 0); - assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='signal',interface='bar.x',", 3) >= 0); - assert_se(match_add(slots, &root, "arg3='test',sender='foo',type='method_call',interface='bar.x',", 4) >= 0); - assert_se(match_add(slots, &root, "", 5) >= 0); - assert_se(match_add(slots, &root, "interface='quux.x'", 6) >= 0); - assert_se(match_add(slots, &root, "interface='bar.x'", 7) >= 0); - assert_se(match_add(slots, &root, "member='waldo',path='/foo/bar'", 8) >= 0); - assert_se(match_add(slots, &root, "path='/foo/bar'", 9) >= 0); - assert_se(match_add(slots, &root, "path_namespace='/foo'", 10) >= 0); - assert_se(match_add(slots, &root, "path_namespace='/foo/quux'", 11) >= 0); - assert_se(match_add(slots, &root, "arg1='two'", 12) >= 0); - assert_se(match_add(slots, &root, "member='waldo',arg2path='/prefix/'", 13) >= 0); - assert_se(match_add(slots, &root, "member=waldo,path='/foo/bar',arg3namespace='prefix'", 14) >= 0); - assert_se(match_add(slots, &root, "arg4has='pi'", 15) >= 0); - assert_se(match_add(slots, &root, "arg4has='pa'", 16) >= 0); - assert_se(match_add(slots, &root, "arg4has='po'", 17) >= 0); - assert_se(match_add(slots, &root, "arg4='pi'", 18) >= 0); - - bus_match_dump(&root, 0); - - assert_se(sd_bus_message_new_signal(bus, &m, "/foo/bar", "bar.x", "waldo") >= 0); - assert_se(sd_bus_message_append(m, "ssssas", "one", "two", "/prefix/three", "prefix.four", 3, "pi", "pa", "po") >= 0); - assert_se(bus_message_seal(m, 1, 0) >= 0); - - zero(mask); - assert_se(bus_match_run(NULL, &root, m) == 0); - assert_se(mask_contains((unsigned[]) { 9, 8, 7, 5, 10, 12, 13, 14, 15, 16, 17 }, 11)); - - assert_se(bus_match_remove(&root, &slots[8].match_callback) >= 0); - assert_se(bus_match_remove(&root, &slots[13].match_callback) >= 0); - - bus_match_dump(&root, 0); - - zero(mask); - assert_se(bus_match_run(NULL, &root, m) == 0); - assert_se(mask_contains((unsigned[]) { 9, 5, 10, 12, 14, 7, 15, 16, 17 }, 9)); - - for (i = 0; i < _BUS_MATCH_NODE_TYPE_MAX; i++) { - char buf[32]; - const char *x; - - assert_se(x = bus_match_node_type_to_string(i, buf, sizeof(buf))); - - if (i >= BUS_MATCH_MESSAGE_TYPE) - assert_se(bus_match_node_type_from_string(x, strlen(x)) == i); - } - - bus_match_free(&root); - - test_match_scope("interface='foobar'", BUS_MATCH_GENERIC); - test_match_scope("", BUS_MATCH_GENERIC); - test_match_scope("interface='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL); - test_match_scope("sender='org.freedesktop.DBus.Local'", BUS_MATCH_LOCAL); - test_match_scope("member='gurke',path='/org/freedesktop/DBus/Local'", BUS_MATCH_LOCAL); - test_match_scope("arg2='piep',sender='org.freedesktop.DBus',member='waldo'", BUS_MATCH_DRIVER); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-objects.c b/src/libsystemd/sd-bus/test-bus-objects.c deleted file mode 100644 index f11cafd888..0000000000 --- a/src/libsystemd/sd-bus/test-bus-objects.c +++ /dev/null @@ -1,555 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <pthread.h> -#include <stdlib.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-dump.h" -#include "bus-internal.h" -#include "bus-message.h" -#include "bus-util.h" -#include "log.h" -#include "macro.h" -#include "strv.h" -#include "util.h" - -struct context { - int fds[2]; - bool quit; - char *something; - char *automatic_string_property; - uint32_t automatic_integer_property; -}; - -static int something_handler(sd_bus_message *m, void *userdata, sd_bus_error *error) { - struct context *c = userdata; - const char *s; - char *n = NULL; - int r; - - r = sd_bus_message_read(m, "s", &s); - assert_se(r > 0); - - n = strjoin("<<<", s, ">>>", NULL); - assert_se(n); - - free(c->something); - c->something = n; - - log_info("AlterSomething() called, got %s, returning %s", s, n); - - /* This should fail, since the return type doesn't match */ - assert_se(sd_bus_reply_method_return(m, "u", 4711) == -ENOMSG); - - r = sd_bus_reply_method_return(m, "s", n); - assert_se(r >= 0); - - return 1; -} - -static int exit_handler(sd_bus_message *m, void *userdata, sd_bus_error *error) { - struct context *c = userdata; - int r; - - c->quit = true; - - log_info("Exit called"); - - r = sd_bus_reply_method_return(m, ""); - assert_se(r >= 0); - - return 1; -} - -static int get_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { - struct context *c = userdata; - int r; - - log_info("property get for %s called, returning \"%s\".", property, c->something); - - r = sd_bus_message_append(reply, "s", c->something); - assert_se(r >= 0); - - return 1; -} - -static int set_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *value, void *userdata, sd_bus_error *error) { - struct context *c = userdata; - const char *s; - char *n; - int r; - - log_info("property set for %s called", property); - - r = sd_bus_message_read(value, "s", &s); - assert_se(r >= 0); - - n = strdup(s); - assert_se(n); - - free(c->something); - c->something = n; - - return 1; -} - -static int value_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { - _cleanup_free_ char *s = NULL; - const char *x; - int r; - - assert_se(asprintf(&s, "object %p, path %s", userdata, path) >= 0); - r = sd_bus_message_append(reply, "s", s); - assert_se(r >= 0); - - assert_se(x = startswith(path, "/value/")); - - assert_se(PTR_TO_UINT(userdata) == 30); - - return 1; -} - -static int notify_test(sd_bus_message *m, void *userdata, sd_bus_error *error) { - int r; - - assert_se(sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), m->path, "org.freedesktop.systemd.ValueTest", "Value", NULL) >= 0); - - r = sd_bus_reply_method_return(m, NULL); - assert_se(r >= 0); - - return 1; -} - -static int notify_test2(sd_bus_message *m, void *userdata, sd_bus_error *error) { - int r; - - assert_se(sd_bus_emit_properties_changed_strv(sd_bus_message_get_bus(m), m->path, "org.freedesktop.systemd.ValueTest", NULL) >= 0); - - r = sd_bus_reply_method_return(m, NULL); - assert_se(r >= 0); - - return 1; -} - -static int emit_interfaces_added(sd_bus_message *m, void *userdata, sd_bus_error *error) { - int r; - - assert_se(sd_bus_emit_interfaces_added(sd_bus_message_get_bus(m), "/value/a/x", "org.freedesktop.systemd.ValueTest", NULL) >= 0); - - r = sd_bus_reply_method_return(m, NULL); - assert_se(r >= 0); - - return 1; -} - -static int emit_interfaces_removed(sd_bus_message *m, void *userdata, sd_bus_error *error) { - int r; - - assert_se(sd_bus_emit_interfaces_removed(sd_bus_message_get_bus(m), "/value/a/x", "org.freedesktop.systemd.ValueTest", NULL) >= 0); - - r = sd_bus_reply_method_return(m, NULL); - assert_se(r >= 0); - - return 1; -} - -static int emit_object_added(sd_bus_message *m, void *userdata, sd_bus_error *error) { - int r; - - assert_se(sd_bus_emit_object_added(sd_bus_message_get_bus(m), "/value/a/x") >= 0); - - r = sd_bus_reply_method_return(m, NULL); - assert_se(r >= 0); - - return 1; -} - -static int emit_object_removed(sd_bus_message *m, void *userdata, sd_bus_error *error) { - int r; - - assert_se(sd_bus_emit_object_removed(sd_bus_message_get_bus(m), "/value/a/x") >= 0); - - r = sd_bus_reply_method_return(m, NULL); - assert_se(r >= 0); - - return 1; -} - -static const sd_bus_vtable vtable[] = { - SD_BUS_VTABLE_START(0), - SD_BUS_METHOD("AlterSomething", "s", "s", something_handler, 0), - SD_BUS_METHOD("Exit", "", "", exit_handler, 0), - SD_BUS_WRITABLE_PROPERTY("Something", "s", get_handler, set_handler, 0, 0), - SD_BUS_WRITABLE_PROPERTY("AutomaticStringProperty", "s", NULL, NULL, offsetof(struct context, automatic_string_property), 0), - SD_BUS_WRITABLE_PROPERTY("AutomaticIntegerProperty", "u", NULL, NULL, offsetof(struct context, automatic_integer_property), 0), - SD_BUS_METHOD("NoOperation", NULL, NULL, NULL, 0), - SD_BUS_METHOD("EmitInterfacesAdded", NULL, NULL, emit_interfaces_added, 0), - SD_BUS_METHOD("EmitInterfacesRemoved", NULL, NULL, emit_interfaces_removed, 0), - SD_BUS_METHOD("EmitObjectAdded", NULL, NULL, emit_object_added, 0), - SD_BUS_METHOD("EmitObjectRemoved", NULL, NULL, emit_object_removed, 0), - SD_BUS_VTABLE_END -}; - -static const sd_bus_vtable vtable2[] = { - SD_BUS_VTABLE_START(0), - SD_BUS_METHOD("NotifyTest", "", "", notify_test, 0), - SD_BUS_METHOD("NotifyTest2", "", "", notify_test2, 0), - SD_BUS_PROPERTY("Value", "s", value_handler, 10, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("Value2", "s", value_handler, 10, SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION), - SD_BUS_PROPERTY("Value3", "s", value_handler, 10, SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("Value4", "s", value_handler, 10, 0), - SD_BUS_PROPERTY("AnExplicitProperty", "s", NULL, offsetof(struct context, something), SD_BUS_VTABLE_PROPERTY_EXPLICIT|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION), - SD_BUS_VTABLE_END -}; - -static int enumerator_callback(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { - - if (object_path_startswith("/value", path)) - assert_se(*nodes = strv_new("/value/a", "/value/b", "/value/c", NULL)); - - return 1; -} - -static int enumerator2_callback(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { - - if (object_path_startswith("/value/a", path)) - assert_se(*nodes = strv_new("/value/a/x", "/value/a/y", "/value/a/z", NULL)); - - return 1; -} - -static void *server(void *p) { - struct context *c = p; - sd_bus *bus = NULL; - sd_id128_t id; - int r; - - c->quit = false; - - assert_se(sd_id128_randomize(&id) >= 0); - - assert_se(sd_bus_new(&bus) >= 0); - assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0); - assert_se(sd_bus_set_server(bus, 1, id) >= 0); - - assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "org.freedesktop.systemd.test", vtable, c) >= 0); - assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "org.freedesktop.systemd.test2", vtable, c) >= 0); - assert_se(sd_bus_add_fallback_vtable(bus, NULL, "/value", "org.freedesktop.systemd.ValueTest", vtable2, NULL, UINT_TO_PTR(20)) >= 0); - assert_se(sd_bus_add_node_enumerator(bus, NULL, "/value", enumerator_callback, NULL) >= 0); - assert_se(sd_bus_add_node_enumerator(bus, NULL, "/value/a", enumerator2_callback, NULL) >= 0); - assert_se(sd_bus_add_object_manager(bus, NULL, "/value") >= 0); - assert_se(sd_bus_add_object_manager(bus, NULL, "/value/a") >= 0); - - assert_se(sd_bus_start(bus) >= 0); - - log_error("Entering event loop on server"); - - while (!c->quit) { - log_error("Loop!"); - - r = sd_bus_process(bus, NULL); - if (r < 0) { - log_error_errno(r, "Failed to process requests: %m"); - goto fail; - } - - if (r == 0) { - r = sd_bus_wait(bus, (uint64_t) -1); - if (r < 0) { - log_error_errno(r, "Failed to wait: %m"); - goto fail; - } - - continue; - } - } - - r = 0; - -fail: - if (bus) { - sd_bus_flush(bus); - sd_bus_unref(bus); - } - - return INT_TO_PTR(r); -} - -static int client(struct context *c) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - const char *s; - int r; - - assert_se(sd_bus_new(&bus) >= 0); - assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0); - assert_se(sd_bus_start(bus) >= 0); - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "NoOperation", &error, NULL, NULL); - assert_se(r >= 0); - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "s", "hallo"); - assert_se(r >= 0); - - r = sd_bus_message_read(reply, "s", &s); - assert_se(r >= 0); - assert_se(streq(s, "<<<hallo>>>")); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Doesntexist", &error, &reply, ""); - assert_se(r < 0); - assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD)); - - sd_bus_error_free(&error); - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "as", 1, "hallo"); - assert_se(r < 0); - assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)); - - sd_bus_error_free(&error); - - r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s"); - assert_se(r >= 0); - - r = sd_bus_message_read(reply, "s", &s); - assert_se(r >= 0); - assert_se(streq(s, "<<<hallo>>>")); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, "s", "test"); - assert_se(r >= 0); - - r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s"); - assert_se(r >= 0); - - r = sd_bus_message_read(reply, "s", &s); - assert_se(r >= 0); - assert_se(streq(s, "test")); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AutomaticIntegerProperty", &error, "u", 815); - assert_se(r >= 0); - - assert_se(c->automatic_integer_property == 815); - - r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AutomaticStringProperty", &error, "s", "Du Dödel, Du!"); - assert_se(r >= 0); - - assert_se(streq(c->automatic_string_property, "Du Dödel, Du!")); - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, ""); - assert_se(r >= 0); - - r = sd_bus_message_read(reply, "s", &s); - assert_se(r >= 0); - fputs(s, stdout); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/value/xuzz", "org.freedesktop.systemd.ValueTest", "Value", &error, &reply, "s"); - assert_se(r >= 0); - - r = sd_bus_message_read(reply, "s", &s); - assert_se(r >= 0); - log_info("read %s", s); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, ""); - assert_se(r >= 0); - - r = sd_bus_message_read(reply, "s", &s); - assert_se(r >= 0); - fputs(s, stdout); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, ""); - assert_se(r >= 0); - - r = sd_bus_message_read(reply, "s", &s); - assert_se(r >= 0); - fputs(s, stdout); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, ""); - assert_se(r >= 0); - - r = sd_bus_message_read(reply, "s", &s); - assert_se(r >= 0); - fputs(s, stdout); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", ""); - assert_se(r >= 0); - - bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "org.freedesktop.systemd.ValueTest2"); - assert_se(r < 0); - assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_INTERFACE)); - sd_bus_error_free(&error); - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.ObjectManager", "GetManagedObjects", &error, &reply, ""); - assert_se(r < 0); - assert_se(sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD)); - sd_bus_error_free(&error); - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value", "org.freedesktop.DBus.ObjectManager", "GetManagedObjects", &error, &reply, ""); - assert_se(r >= 0); - - bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.systemd.ValueTest", "NotifyTest", &error, NULL, ""); - assert_se(r >= 0); - - r = sd_bus_process(bus, &reply); - assert_se(r > 0); - - assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.Properties", "PropertiesChanged")); - bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.systemd.ValueTest", "NotifyTest2", &error, NULL, ""); - assert_se(r >= 0); - - r = sd_bus_process(bus, &reply); - assert_se(r > 0); - - assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.Properties", "PropertiesChanged")); - bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitInterfacesAdded", &error, NULL, ""); - assert_se(r >= 0); - - r = sd_bus_process(bus, &reply); - assert_se(r > 0); - - assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded")); - bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitInterfacesRemoved", &error, NULL, ""); - assert_se(r >= 0); - - r = sd_bus_process(bus, &reply); - assert_se(r > 0); - - assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved")); - bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitObjectAdded", &error, NULL, ""); - assert_se(r >= 0); - - r = sd_bus_process(bus, &reply); - assert_se(r > 0); - - assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded")); - bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "EmitObjectRemoved", &error, NULL, ""); - assert_se(r >= 0); - - r = sd_bus_process(bus, &reply); - assert_se(r > 0); - - assert_se(sd_bus_message_is_signal(reply, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved")); - bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - sd_bus_message_unref(reply); - reply = NULL; - - r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Exit", &error, NULL, ""); - assert_se(r >= 0); - - sd_bus_flush(bus); - - return 0; -} - -int main(int argc, char *argv[]) { - struct context c = {}; - pthread_t s; - void *p; - int r, q; - - zero(c); - - c.automatic_integer_property = 4711; - assert_se(c.automatic_string_property = strdup("dudeldu")); - - assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, c.fds) >= 0); - - r = pthread_create(&s, NULL, server, &c); - if (r != 0) - return -r; - - r = client(&c); - - q = pthread_join(s, &p); - if (q != 0) - return -q; - - if (r < 0) - return r; - - if (PTR_TO_INT(p) < 0) - return PTR_TO_INT(p); - - free(c.something); - free(c.automatic_string_property); - - return EXIT_SUCCESS; -} diff --git a/src/libsystemd/sd-bus/test-bus-proxy.c b/src/libsystemd/sd-bus/test-bus-proxy.c deleted file mode 100644 index 45d0a5ffce..0000000000 --- a/src/libsystemd/sd-bus/test-bus-proxy.c +++ /dev/null @@ -1,117 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2015 David Herrmann <dh.herrmann@gmail.com> - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <fcntl.h> -#include <stdlib.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-dump.h" -#include "bus-kernel.h" -#include "bus-util.h" -#include "log.h" -#include "util.h" - -typedef struct { - const char *sender; - int matched_acquired; -} TestProxyMatch; - -static int test_proxy_acquired(sd_bus_message *m, void *userdata, sd_bus_error *error) { - TestProxyMatch *match = userdata; - const char *name; - int r; - - r = sd_bus_message_read(m, "s", &name); - assert_se(r >= 0); - - if (!streq_ptr(match->sender, name)) - return 0; - - ++match->matched_acquired; - return 1; -} - -static void test_proxy_matched(void) { - _cleanup_(sd_bus_flush_close_unrefp) sd_bus *a = NULL; - _cleanup_free_ char *matchstr = NULL; - TestProxyMatch match = {}; - const char *me; - int r; - - /* open bus 'a' */ - - r = sd_bus_new(&a); - assert_se(r >= 0); - - r = sd_bus_set_address(a, "unix:path=/var/run/dbus/system_bus_socket"); - assert_se(r >= 0); - - r = sd_bus_set_bus_client(a, true); - assert_se(r >= 0); - - r = sd_bus_start(a); - assert_se(r >= 0); - - r = sd_bus_get_unique_name(a, &me); - assert_se(r >= 0); - - matchstr = strjoin("type='signal'," - "member='NameAcquired'," - "destination='", - me, - "'", - NULL); - assert_se(matchstr); - r = sd_bus_add_match(a, NULL, matchstr, test_proxy_acquired, &match); - assert_se(r >= 0); - - r = sd_bus_get_unique_name(a, &match.sender); - assert_se(r >= 0); - - /* barrier to guarantee proxy/dbus-daemon handled the previous data */ - r = sd_bus_call_method(a, - "org.freedesktop.DBus", - "/org/freedesktop/DBus", - "org.freedesktop.DBus", - "GetId", - NULL, NULL, NULL); - assert_se(r >= 0); - - /* now we can be sure the Name* signals were sent */ - do { - r = sd_bus_process(a, NULL); - } while (r > 0); - assert_se(r == 0); - - assert_se(match.matched_acquired == 1); -} - -int main(int argc, char **argv) { - if (access("/var/run/dbus/system_bus_socket", F_OK) < 0) - return EXIT_TEST_SKIP; - - log_parse_environment(); - - test_proxy_matched(); - - return EXIT_SUCCESS; -} diff --git a/src/libsystemd/sd-bus/test-bus-server.c b/src/libsystemd/sd-bus/test-bus-server.c deleted file mode 100644 index b6272efc30..0000000000 --- a/src/libsystemd/sd-bus/test-bus-server.c +++ /dev/null @@ -1,216 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <pthread.h> -#include <stdlib.h> - -#include "sd-bus.h" - -#include "bus-internal.h" -#include "bus-util.h" -#include "log.h" -#include "macro.h" -#include "util.h" - -struct context { - int fds[2]; - - bool client_negotiate_unix_fds; - bool server_negotiate_unix_fds; - - bool client_anonymous_auth; - bool server_anonymous_auth; -}; - -static void *server(void *p) { - struct context *c = p; - sd_bus *bus = NULL; - sd_id128_t id; - bool quit = false; - int r; - - assert_se(sd_id128_randomize(&id) >= 0); - - assert_se(sd_bus_new(&bus) >= 0); - assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0); - assert_se(sd_bus_set_server(bus, 1, id) >= 0); - assert_se(sd_bus_set_anonymous(bus, c->server_anonymous_auth) >= 0); - assert_se(sd_bus_negotiate_fds(bus, c->server_negotiate_unix_fds) >= 0); - assert_se(sd_bus_start(bus) >= 0); - - while (!quit) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; - - r = sd_bus_process(bus, &m); - if (r < 0) { - log_error_errno(r, "Failed to process requests: %m"); - goto fail; - } - - if (r == 0) { - r = sd_bus_wait(bus, (uint64_t) -1); - if (r < 0) { - log_error_errno(r, "Failed to wait: %m"); - goto fail; - } - - continue; - } - - if (!m) - continue; - - log_info("Got message! member=%s", strna(sd_bus_message_get_member(m))); - - if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Exit")) { - - assert_se((sd_bus_can_send(bus, 'h') >= 1) == (c->server_negotiate_unix_fds && c->client_negotiate_unix_fds)); - - r = sd_bus_message_new_method_return(m, &reply); - if (r < 0) { - log_error_errno(r, "Failed to allocate return: %m"); - goto fail; - } - - quit = true; - - } else if (sd_bus_message_is_method_call(m, NULL, NULL)) { - r = sd_bus_message_new_method_error( - m, - &reply, - &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method.")); - if (r < 0) { - log_error_errno(r, "Failed to allocate return: %m"); - goto fail; - } - } - - if (reply) { - r = sd_bus_send(bus, reply, NULL); - if (r < 0) { - log_error_errno(r, "Failed to send reply: %m"); - goto fail; - } - } - } - - r = 0; - -fail: - if (bus) { - sd_bus_flush(bus); - sd_bus_unref(bus); - } - - return INT_TO_PTR(r); -} - -static int client(struct context *c) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; - _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; - sd_bus_error error = SD_BUS_ERROR_NULL; - int r; - - assert_se(sd_bus_new(&bus) >= 0); - assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0); - assert_se(sd_bus_negotiate_fds(bus, c->client_negotiate_unix_fds) >= 0); - assert_se(sd_bus_set_anonymous(bus, c->client_anonymous_auth) >= 0); - assert_se(sd_bus_start(bus) >= 0); - - r = sd_bus_message_new_method_call( - bus, - &m, - "org.freedesktop.systemd.test", - "/", - "org.freedesktop.systemd.test", - "Exit"); - if (r < 0) - return log_error_errno(r, "Failed to allocate method call: %m"); - - r = sd_bus_call(bus, m, 0, &error, &reply); - if (r < 0) { - log_error("Failed to issue method call: %s", bus_error_message(&error, -r)); - return r; - } - - return 0; -} - -static int test_one(bool client_negotiate_unix_fds, bool server_negotiate_unix_fds, - bool client_anonymous_auth, bool server_anonymous_auth) { - - struct context c; - pthread_t s; - void *p; - int r, q; - - zero(c); - - assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, c.fds) >= 0); - - c.client_negotiate_unix_fds = client_negotiate_unix_fds; - c.server_negotiate_unix_fds = server_negotiate_unix_fds; - c.client_anonymous_auth = client_anonymous_auth; - c.server_anonymous_auth = server_anonymous_auth; - - r = pthread_create(&s, NULL, server, &c); - if (r != 0) - return -r; - - r = client(&c); - - q = pthread_join(s, &p); - if (q != 0) - return -q; - - if (r < 0) - return r; - - if (PTR_TO_INT(p) < 0) - return PTR_TO_INT(p); - - return 0; -} - -int main(int argc, char *argv[]) { - int r; - - r = test_one(true, true, false, false); - assert_se(r >= 0); - - r = test_one(true, false, false, false); - assert_se(r >= 0); - - r = test_one(false, true, false, false); - assert_se(r >= 0); - - r = test_one(false, false, false, false); - assert_se(r >= 0); - - r = test_one(true, true, true, true); - assert_se(r >= 0); - - r = test_one(true, true, false, true); - assert_se(r >= 0); - - r = test_one(true, true, true, false); - assert_se(r == -EPERM); - - return EXIT_SUCCESS; -} diff --git a/src/libsystemd/sd-bus/test-bus-signature.c b/src/libsystemd/sd-bus/test-bus-signature.c deleted file mode 100644 index 4f4fd093bf..0000000000 --- a/src/libsystemd/sd-bus/test-bus-signature.c +++ /dev/null @@ -1,164 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "bus-internal.h" -#include "bus-signature.h" -#include "log.h" -#include "string-util.h" - -int main(int argc, char *argv[]) { - char prefix[256]; - int r; - - assert_se(signature_is_single("y", false)); - assert_se(signature_is_single("u", false)); - assert_se(signature_is_single("v", false)); - assert_se(signature_is_single("as", false)); - assert_se(signature_is_single("(ss)", false)); - assert_se(signature_is_single("()", false)); - assert_se(signature_is_single("(()()()()())", false)); - assert_se(signature_is_single("(((())))", false)); - assert_se(signature_is_single("((((s))))", false)); - assert_se(signature_is_single("{ss}", true)); - assert_se(signature_is_single("a{ss}", false)); - assert_se(!signature_is_single("uu", false)); - assert_se(!signature_is_single("", false)); - assert_se(!signature_is_single("(", false)); - assert_se(!signature_is_single(")", false)); - assert_se(!signature_is_single("())", false)); - assert_se(!signature_is_single("((())", false)); - assert_se(!signature_is_single("{)", false)); - assert_se(!signature_is_single("{}", true)); - assert_se(!signature_is_single("{sss}", true)); - assert_se(!signature_is_single("{s}", true)); - assert_se(!signature_is_single("{ss}", false)); - assert_se(!signature_is_single("{ass}", true)); - assert_se(!signature_is_single("a}", true)); - - assert_se(signature_is_pair("yy")); - assert_se(signature_is_pair("ss")); - assert_se(signature_is_pair("sas")); - assert_se(signature_is_pair("sv")); - assert_se(signature_is_pair("sa(vs)")); - assert_se(!signature_is_pair("")); - assert_se(!signature_is_pair("va")); - assert_se(!signature_is_pair("sss")); - assert_se(!signature_is_pair("{s}ss")); - - assert_se(signature_is_valid("ssa{ss}sssub", true)); - assert_se(signature_is_valid("ssa{ss}sssub", false)); - assert_se(signature_is_valid("{ss}", true)); - assert_se(!signature_is_valid("{ss}", false)); - assert_se(signature_is_valid("", true)); - assert_se(signature_is_valid("", false)); - - assert_se(signature_is_valid("sssusa(uuubbba(uu)uuuu)a{u(uuuvas)}", false)); - - assert_se(!signature_is_valid("a", false)); - assert_se(signature_is_valid("as", false)); - assert_se(signature_is_valid("aas", false)); - assert_se(signature_is_valid("aaas", false)); - assert_se(signature_is_valid("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaad", false)); - assert_se(signature_is_valid("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaas", false)); - assert_se(!signature_is_valid("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaau", false)); - - assert_se(signature_is_valid("(((((((((((((((((((((((((((((((())))))))))))))))))))))))))))))))", false)); - assert_se(!signature_is_valid("((((((((((((((((((((((((((((((((()))))))))))))))))))))))))))))))))", false)); - - assert_se(namespace_complex_pattern("", "")); - assert_se(namespace_complex_pattern("foobar", "foobar")); - assert_se(namespace_complex_pattern("foobar.waldo", "foobar.waldo")); - assert_se(namespace_complex_pattern("foobar.", "foobar.waldo")); - assert_se(namespace_complex_pattern("foobar.waldo", "foobar.")); - assert_se(!namespace_complex_pattern("foobar.waldo", "foobar")); - assert_se(!namespace_complex_pattern("foobar", "foobar.waldo")); - assert_se(!namespace_complex_pattern("", "foo")); - assert_se(!namespace_complex_pattern("foo", "")); - assert_se(!namespace_complex_pattern("foo.", "")); - - assert_se(path_complex_pattern("", "")); - assert_se(!path_complex_pattern("", "/")); - assert_se(!path_complex_pattern("/", "")); - assert_se(path_complex_pattern("/", "/")); - assert_se(path_complex_pattern("/foobar/", "/")); - assert_se(!path_complex_pattern("/foobar/", "/foobar")); - assert_se(path_complex_pattern("/foobar", "/foobar")); - assert_se(!path_complex_pattern("/foobar", "/foobar/")); - assert_se(!path_complex_pattern("/foobar", "/foobar/waldo")); - assert_se(path_complex_pattern("/foobar/", "/foobar/waldo")); - assert_se(path_complex_pattern("/foobar/waldo", "/foobar/")); - - assert_se(path_simple_pattern("/foo/", "/foo/bar/waldo")); - - assert_se(namespace_simple_pattern("", "")); - assert_se(namespace_simple_pattern("", ".foobar")); - assert_se(namespace_simple_pattern("foobar", "foobar")); - assert_se(namespace_simple_pattern("foobar.waldo", "foobar.waldo")); - assert_se(namespace_simple_pattern("foobar", "foobar.waldo")); - assert_se(!namespace_simple_pattern("foobar.waldo", "foobar")); - assert_se(!namespace_simple_pattern("", "foo")); - assert_se(!namespace_simple_pattern("foo", "")); - assert_se(namespace_simple_pattern("foo.", "foo.bar.waldo")); - - assert_se(streq(object_path_startswith("/foo/bar", "/foo"), "bar")); - assert_se(streq(object_path_startswith("/foo", "/foo"), "")); - assert_se(streq(object_path_startswith("/foo", "/"), "foo")); - assert_se(streq(object_path_startswith("/", "/"), "")); - assert_se(!object_path_startswith("/foo", "/bar")); - assert_se(!object_path_startswith("/", "/bar")); - assert_se(!object_path_startswith("/foo", "")); - - assert_se(object_path_is_valid("/foo/bar")); - assert_se(object_path_is_valid("/foo")); - assert_se(object_path_is_valid("/")); - assert_se(object_path_is_valid("/foo5")); - assert_se(object_path_is_valid("/foo_5")); - assert_se(!object_path_is_valid("")); - assert_se(!object_path_is_valid("/foo/")); - assert_se(!object_path_is_valid("//")); - assert_se(!object_path_is_valid("//foo")); - assert_se(!object_path_is_valid("/foo//bar")); - assert_se(!object_path_is_valid("/foo/aaaäöä")); - - OBJECT_PATH_FOREACH_PREFIX(prefix, "/") { - log_info("<%s>", prefix); - assert_not_reached("???"); - } - - r = 0; - OBJECT_PATH_FOREACH_PREFIX(prefix, "/xxx") { - log_info("<%s>", prefix); - assert_se(streq(prefix, "/")); - assert_se(r == 0); - r++; - } - assert_se(r == 1); - - r = 0; - OBJECT_PATH_FOREACH_PREFIX(prefix, "/xxx/yyy/zzz") { - log_info("<%s>", prefix); - assert_se(r != 0 || streq(prefix, "/xxx/yyy")); - assert_se(r != 1 || streq(prefix, "/xxx")); - assert_se(r != 2 || streq(prefix, "/")); - r++; - } - assert_se(r == 3); - - return 0; -} diff --git a/src/libsystemd/sd-bus/test-bus-zero-copy.c b/src/libsystemd/sd-bus/test-bus-zero-copy.c deleted file mode 100644 index 3380e8500a..0000000000 --- a/src/libsystemd/sd-bus/test-bus-zero-copy.c +++ /dev/null @@ -1,210 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <sys/mman.h> - -#include "sd-bus.h" - -#include "alloc-util.h" -#include "bus-dump.h" -#include "bus-kernel.h" -#include "bus-message.h" -#include "fd-util.h" -#include "log.h" -#include "memfd-util.h" -#include "string-util.h" -#include "util.h" - -#define FIRST_ARRAY 17 -#define SECOND_ARRAY 33 - -#define STRING_SIZE 123 - -int main(int argc, char *argv[]) { - _cleanup_free_ char *name = NULL, *bus_name = NULL, *address = NULL; - const char *unique; - uint8_t *p; - sd_bus *a, *b; - int r, bus_ref; - sd_bus_message *m; - int f; - uint64_t sz; - uint32_t u32; - size_t i, l; - char *s; - _cleanup_close_ int sfd = -1; - - log_set_max_level(LOG_DEBUG); - - assert_se(asprintf(&name, "deine-mutter-%u", (unsigned) getpid()) >= 0); - - bus_ref = bus_kernel_create_bus(name, false, &bus_name); - if (bus_ref == -ENOENT) - return EXIT_TEST_SKIP; - - assert_se(bus_ref >= 0); - - address = strappend("kernel:path=", bus_name); - assert_se(address); - - r = sd_bus_new(&a); - assert_se(r >= 0); - - r = sd_bus_new(&b); - assert_se(r >= 0); - - r = sd_bus_set_address(a, address); - assert_se(r >= 0); - - r = sd_bus_set_address(b, address); - assert_se(r >= 0); - - r = sd_bus_start(a); - assert_se(r >= 0); - - r = sd_bus_start(b); - assert_se(r >= 0); - - r = sd_bus_get_unique_name(a, &unique); - assert_se(r >= 0); - - r = sd_bus_message_new_method_call(b, &m, unique, "/a/path", "an.inter.face", "AMethod"); - assert_se(r >= 0); - - r = sd_bus_message_open_container(m, 'r', "aysay"); - assert_se(r >= 0); - - r = sd_bus_message_append_array_space(m, 'y', FIRST_ARRAY, (void**) &p); - assert_se(r >= 0); - - p[0] = '<'; - memset(p+1, 'L', FIRST_ARRAY-2); - p[FIRST_ARRAY-1] = '>'; - - f = memfd_new_and_map(NULL, STRING_SIZE, (void**) &s); - assert_se(f >= 0); - - s[0] = '<'; - for (i = 1; i < STRING_SIZE-2; i++) - s[i] = '0' + (i % 10); - s[STRING_SIZE-2] = '>'; - s[STRING_SIZE-1] = 0; - munmap(s, STRING_SIZE); - - r = memfd_get_size(f, &sz); - assert_se(r >= 0); - assert_se(sz == STRING_SIZE); - - r = sd_bus_message_append_string_memfd(m, f, 0, (uint64_t) -1); - assert_se(r >= 0); - - close(f); - - f = memfd_new_and_map(NULL, SECOND_ARRAY, (void**) &p); - assert_se(f >= 0); - - p[0] = '<'; - memset(p+1, 'P', SECOND_ARRAY-2); - p[SECOND_ARRAY-1] = '>'; - munmap(p, SECOND_ARRAY); - - r = memfd_get_size(f, &sz); - assert_se(r >= 0); - assert_se(sz == SECOND_ARRAY); - - r = sd_bus_message_append_array_memfd(m, 'y', f, 0, (uint64_t) -1); - assert_se(r >= 0); - - close(f); - - r = sd_bus_message_close_container(m); - assert_se(r >= 0); - - r = sd_bus_message_append(m, "u", 4711); - assert_se(r >= 0); - - assert_se((sfd = memfd_new_and_map(NULL, 6, (void**) &p)) >= 0); - memcpy(p, "abcd\0", 6); - munmap(p, 6); - assert_se(sd_bus_message_append_string_memfd(m, sfd, 1, 4) >= 0); - - r = bus_message_seal(m, 55, 99*USEC_PER_SEC); - assert_se(r >= 0); - - bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - - r = sd_bus_send(b, m, NULL); - assert_se(r >= 0); - - sd_bus_message_unref(m); - - r = sd_bus_process(a, &m); - assert_se(r > 0); - - bus_message_dump(m, stdout, BUS_MESSAGE_DUMP_WITH_HEADER); - sd_bus_message_rewind(m, true); - - r = sd_bus_message_enter_container(m, 'r', "aysay"); - assert_se(r > 0); - - r = sd_bus_message_read_array(m, 'y', (const void**) &p, &l); - assert_se(r > 0); - assert_se(l == FIRST_ARRAY); - - assert_se(p[0] == '<'); - for (i = 1; i < l-1; i++) - assert_se(p[i] == 'L'); - assert_se(p[l-1] == '>'); - - r = sd_bus_message_read(m, "s", &s); - assert_se(r > 0); - - assert_se(s[0] == '<'); - for (i = 1; i < STRING_SIZE-2; i++) - assert_se(s[i] == (char) ('0' + (i % 10))); - assert_se(s[STRING_SIZE-2] == '>'); - assert_se(s[STRING_SIZE-1] == 0); - - r = sd_bus_message_read_array(m, 'y', (const void**) &p, &l); - assert_se(r > 0); - assert_se(l == SECOND_ARRAY); - - assert_se(p[0] == '<'); - for (i = 1; i < l-1; i++) - assert_se(p[i] == 'P'); - assert_se(p[l-1] == '>'); - - r = sd_bus_message_exit_container(m); - assert_se(r > 0); - - r = sd_bus_message_read(m, "u", &u32); - assert_se(r > 0); - assert_se(u32 == 4711); - - r = sd_bus_message_read(m, "s", &s); - assert_se(r > 0); - assert_se(streq_ptr(s, "bcd")); - - sd_bus_message_unref(m); - - sd_bus_unref(a); - sd_bus_unref(b); - - return 0; -} |