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bitmap: use external iterator
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If the caller does not specify arg1 for NameOwnerChanged matches, we
really must take the ID from arg2 or arg3, if provided. They are
guaranteed to be identical to arg1 if either is supplied, but there is no
strict requiredment that arg1 is supplied. Hence, make sure to always
take the more restrictive match. Otherwise, we install rather wide
matches without anyone requiring them.
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Make sure we don't install NameOwnerChanged matches if the caller passed
a destination='' match (except if it is the broadcast address). Per spec,
all NameOwnerChanged signals are broadcasts.
Only the NameLost/NameAcquired signals are unicasts, but those are never
received through sd-bus. Instead, the bus-proxy synthesizes them and it
already installs proper matches for them.
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Make sure we actually parse "unsigned long long" if we encode a uint64_t.
Otherwise, we will get random data from the stack.
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Reuse the Iterator object from hashmap.h and expose a similar API.
This allows us to do
{
Iterator i;
unsigned n;
BITMAP_FOREACH(n, b, i) {
Iterator j;
unsigned m;
BITMAP_FOREACH(m, b, j) {
...
}
}
}
without getting confused. Requested by David.
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In gvariant, all fixed-size objects need to be sized a multiple of their
alignment. If a structure has only fixed-size members, it is required to
be fixed size itself. If you imagine a structure like (ty), you have an
8-byte member followed by an 1-byte member. Hence, the overall inner-size
is 9. The alignment of the object is 8, though. Therefore, the specs
mandates final padding after fixed-size structures, to make sure it's
sized a multiple of its alignment (=> 16).
On the gvariant decoder side, we already account for this in
bus_gvariant_get_size(), as we apply overall padding to the size of the
structure. Therefore, our decoder correctly skips such final padding when
parsing fixed-size structure.
On the gvariant encoder side, however, we don't account for this final
padding. This patch fixes the structure and dict-entry encoders to
properly place such padding at the end of non-uniform fixed-size
structures.
The problem can be easily seen by running:
$ busctl --user monitor
and
$ busctl call --user org.freedesktop.systemd1 / org.foobar foobar "(ty)" 777 8
The monitor will fail to parse the message and print an error. With this
patch applied, everything works fine again.
This patch also adds a bunch of test-cases to force non-uniform
structures with non-pre-aligned positions.
Thanks to Jan Alexander Steffens <jan.steffens@gmail.com> for spotting
this and narrowing it down to non-uniform gvariant structures. Fixes #597.
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resolved: add basic NSEC and NSEC3 support
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This target allows to trigger a build of $(BUILT_SOURCES) manually. This
is handy if you tend to use 'make systemd-foobar' to directly build a
single binary. Those do not pull in $(BUILT_SOURCES), unfortunately. See
automake docs for that.
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So right now our object-tree is limited to 2 levels at most
('/' and '/foo/...../bar'). We never link any intermediate levels, even
though that was clearly the plan. Fix the bus_node_allocate() helper to
actually link all intermediate nodes, too, not just the root node.
This fixes a simple inverse ptr-diff bug.
The downside of this fix is that we clearly never tested (nor used) the
object tree in any way. The only reason that the introspection works is
that our enumerators shortcut the object tree.
Lets see whether that code actually works..
Thanks to: Nathaniel McCallum <nathaniel@themccallums.org>
..for reporting this. See #524 for an actual example code.
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It is highly confusing if a getter function returns 0, but the value is
set to NULL. This, right now, triggers assertions as code relies on the
returned values to be non-NULL.
Like with sd-bus-creds and friends, return 0 only if a value is actually
available.
Discussed with Tom, and actually fixes real bugs as in #512.
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If /etc/machine-id is missing (eg., gold images), we should not fail
installing sd-boot. This is a perfectly fine use-case and we should simply
skip installing the default loader config in that case.
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Needed for DNSSEC.
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This implements more of RFC4648.
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basic: util - fix memleak on error in unbase64mem()
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Needed for DNSSEC.
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For when a Hashmap is overkill.
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sd-dhcp-lease: fix handling of multiple routers
We only support one router, but in case more than one is given, we now ignore subsequent ones, rather than fall over.
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resolved: minor improvements to RR handling
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This implements the recommendations from RFC3597.
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resolved: harden
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This merges:
sd-netlink: respect attribute type flags
..fixing a conflict due to a typo fix.
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Needed for DNSSEC.
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We used to have one global socket, use one per transaction instead. This
has the side-effect of giving us a random UDP port per transaction, and
hence increasing the entropy and making cache poisoining significantly
harder to achieve.
We still reuse the same port number for packets belonging to the same
transaction (resent packets).
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This improves the resilience against cache poisoning by being stricter
about only accepting responses that match precisely the requst they
are in reply to.
It should be noted that we still only use one port (which is picked
at random), rather than one port for each transaction. Port
randomization would improve things further, but is not required by
the RFC.
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We want to discover information about the server and use that in when crafting
packets to be resent.
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resolve-host: enable dbus-activation
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networkd: tap add support for vnet_hdr
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We want to reference the servers from their active transactions, so make sure
they stay around as long as the transaction does.
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Currently we only make sure our links can handle the size of the payload witohut
taking the headers into account.
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This patch adds support to configure IFF_VNET_HDR flag
for a tap device. It allows whether sending and receiving
large pass larger (GSO) packets. This greatly increases the
achievable throughput.
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As mandated by RFC4034.
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resolved: assorted cleanups
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Make all LLMNR related packet inspections conditional to p->protocol.
Use switch-case statements while at it, which will make future additions
more readable.
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The C and T bits in the DNS packet header definitions are specific to LLMNR.
In regular DNS, they are called AA and RD instead. Reflect that by calling
the macros accordingly, and alias LLMNR specific macros.
While at it, define RA, AD and CD getters as well.
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De-duplicate some magic numbers.
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Reproducible ID/name values for auto generated anchors in HTML output
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This makes auto generated anchor tags in HTML output reproducible.
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This adds support for option 43 (Vendor Specific Information) to
libsystemd-network DHCP code. The option carries an opaque object of n
octets, interpreted by vendor-specific code on the clients and
servers.
[@zonque: adopted to new unhexmem() API]
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util: add base64 handling
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This implements RFC4648 for a slightly more compact representation of
binary data compared to hex (6 bits per character rather than 4).
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We were ignoring failures from unhexchar, which meant that invalid
hex characters were being turned into garbage rather than the string
rejected.
Fix this by making unhexmem return an error code, also change the API
slightly, to return the size of the returned memory, reflecting the
fact that the memory is a binary blob,and not a string.
For convenience, still append a trailing NULL byte to the returned
memory (not included in the returned size), allowing callers to
treat it as a string without doing a second copy.
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Html man fixes
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logind: bring bus policy up-to-date
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man: go further into details regarding life-cycle of default bus conn…
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build-sys: warn if people don't change the default NTP servers when b…
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README: document that RT group sched should be turned off
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