diff options
| author | Tom Gundersen <teg@jklm.no> | 2016-01-26 18:07:19 +0100 |
|---|---|---|
| committer | Tom Gundersen <teg@jklm.no> | 2016-01-26 18:07:19 +0100 |
| commit | cfd77192c1de3bd264d15d6f4d8b3117f5619f4f (patch) | |
| tree | 2534573f6826eac1ed2bdebfbff27ac07609cf44 | |
| parent | 3820ed90335211dc208b048f1ff48ae66940ce3b (diff) | |
| parent | 4850d39ab72e7cb00a6e9c9aa4745c997674efa6 (diff) | |
Merge pull request #2437 from poettering/dnssec19
nineteenth dnssec patch
39 files changed, 721 insertions, 462 deletions
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md index ba4080cb6e..c96958020f 100644 --- a/CONTRIBUTING.md +++ b/CONTRIBUTING.md @@ -24,7 +24,6 @@ right-away for being misfiled. code. This is a requirement for all code we merge. * Make sure to run "make check" locally, before posting your PR. We use a CI system, meaning we don't even look at your PR, if the build and tests don't pass. - * If you need to update the code in a existing PR, please consider opening a new PR (mentioning in it which old PR it replaces) and closing the old PR. This is much preferable over force-pushing a new patch set into the PR's branch, as commit comments aren't lost that way. That said, we don't follow this rule ourselves quite often, hence this is diff --git a/Makefile.am b/Makefile.am index 1f204b826c..f933b5228e 100644 --- a/Makefile.am +++ b/Makefile.am @@ -840,6 +840,7 @@ libbasic_la_SOURCES = \ src/basic/siphash24.h \ src/basic/set.h \ src/basic/ordered-set.h \ + src/basic/ordered-set.c \ src/basic/bitmap.c \ src/basic/bitmap.h \ src/basic/fdset.c \ @@ -173,9 +173,9 @@ Features: - use equvalent of cat() to insert existing config as a comment, prepended with #. Upon editor exit, lines with one # are removed, lines with two # are left with one #, etc. -* exponential backoff in timesyncd and resolved when we cannot reach a server +* exponential backoff in timesyncd when we cannot reach a server -* timesyncd + resolved: add ugly bus calls to set NTP and DNS servers per-interface, for usage by NM +* timesyncd: add ugly bus calls to set NTP servers per-interface, for usage by NM * extract_many_words() should probably be used by a lot of code that currently uses FOREACH_WORD and friends. For example, most conf @@ -190,13 +190,7 @@ Features: (throughout the codebase, not only PID1) * resolved: - - put networkd events and rtnl events at a higher priority, so that - we always process them before we process client requests - - DNSSEC - - add display of private key types (http://tools.ietf.org/html/rfc4034#appendix-A.1.1)? - - synthesize negative cache entries from NSEC/NSEC3 and drop explicit negative caching of authenticated answers - mDNS/DNS-SD - - mDNS RR resolving - service registration - service/domain/types browsing - avahi compat @@ -204,7 +198,8 @@ Features: - resolved should optionally register additional per-interface LLMNR names, so that for the container case we can establish the same name (maybe "host") for referencing the server, everywhere. - - add API so NM can push DNS server info into resolved + - enable DNSSEC by default + - allow clients to request DNSSEC for a single lookup even if DNSSEC is off (?) * refcounting in sd-resolve is borked diff --git a/man/logind.conf.xml b/man/logind.conf.xml index 48130aa003..597759e33a 100644 --- a/man/logind.conf.xml +++ b/man/logind.conf.xml @@ -294,15 +294,11 @@ <varlistentry> <term><varname>RemoveIPC=</varname></term> - <listitem><para>Controls whether System V and POSIX IPC - objects belonging to the user shall be removed when the user - fully logs out. Takes a boolean argument. If enabled, the user - may not consume IPC resources after the last of the user's - sessions terminated. This covers System V semaphores, shared - memory and message queues, as well as POSIX shared memory and - message queues. Note that IPC objects of the root user are - excluded from the effect of this setting. Defaults to - <literal>yes</literal>.</para></listitem> + <listitem><para>Controls whether System V and POSIX IPC objects belonging to the user shall be removed when the + user fully logs out. Takes a boolean argument. If enabled, the user may not consume IPC resources after the + last of the user's sessions terminated. This covers System V semaphores, shared memory and message queues, as + well as POSIX shared memory and message queues. Note that IPC objects of the root user and other system users + are excluded from the effect of this setting. Defaults to <literal>yes</literal>.</para></listitem> </varlistentry> </variablelist> diff --git a/man/resolved.conf.xml b/man/resolved.conf.xml index 09a192c933..3aa9c3acb1 100644 --- a/man/resolved.conf.xml +++ b/man/resolved.conf.xml @@ -72,40 +72,40 @@ <varlistentry> <term><varname>DNS=</varname></term> - <listitem><para>A space-separated list of IPv4 and IPv6 - addresses to be used as system DNS servers. DNS requests are - sent to one of the listed DNS servers in parallel to any - per-interface DNS servers acquired from - <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. - For compatibility reasons, if this setting is not specified, - the DNS servers listed in - <filename>/etc/resolv.conf</filename> are used instead, if - that file exists and any servers are configured in it. This - setting defaults to the empty list.</para></listitem> + <listitem><para>A space-separated list of IPv4 and IPv6 addresses to use as system DNS servers. DNS requests + are sent to one of the listed DNS servers in parallel to suitable per-link DNS servers acquired from + <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> or + set at runtime by external applications. For compatibility reasons, if this setting is not specified, the DNS + servers listed in <filename>/etc/resolv.conf</filename> are used instead, if that file exists and any servers + are configured in it. This setting defaults to the empty list.</para></listitem> </varlistentry> <varlistentry> <term><varname>FallbackDNS=</varname></term> - <listitem><para>A space-separated list of IPv4 and IPv6 - addresses to be used as the fallback DNS servers. Any - per-interface DNS servers obtained from + <listitem><para>A space-separated list of IPv4 and IPv6 addresses to use as the fallback DNS servers. Any + per-link DNS servers obtained from <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> - take precedence over this setting, as do any servers set via - <varname>DNS=</varname> above or - <filename>/etc/resolv.conf</filename>. This setting is hence - only used if no other DNS server information is known. If this - option is not given, a compiled-in list of DNS servers is used - instead.</para></listitem> + take precedence over this setting, as do any servers set via <varname>DNS=</varname> above or + <filename>/etc/resolv.conf</filename>. This setting is hence only used if no other DNS server information is + known. If this option is not given, a compiled-in list of DNS servers is used instead.</para></listitem> </varlistentry> <varlistentry> <term><varname>Domains=</varname></term> - <listitem><para>A space-separated list of search domains. For - compatibility reasons, if this setting is not specified, the - search domains listed in <filename>/etc/resolv.conf</filename> - are used instead, if that file exists and any domains are - configured in it. This setting defaults to the empty - list.</para></listitem> + <listitem><para>A space-separated list of domains. These domains are used as search suffixes when resolving + single-label host names (domain names which contain no dot), in order to qualify them into fully-qualified + domain names (FQDNs). Search domains are strictly processed in the order they are specified, until the name + with the suffix appended is found. For compatibility reasons, if this setting is not specified, the search + domains listed in <filename>/etc/resolv.conf</filename> are used instead, if that file exists and any domains + are configured in it. This setting defaults to the empty list.</para> + + <para>Specified domain names may optionally be prefixed with <literal>~</literal>. In this case they do not + define a search path, but preferably direct DNS queries for the indicated domains to the DNS servers configured + with the system <varname>DNS=</varname> setting (see above), in case additional, suitable per-link DNS servers + are known. If no per-link DNS servers are known using the <literal>~</literal> syntax has no effect. Use the + construct <literal>~.</literal> (which is composed of <literal>~</literal> to indicate a routing domain and + <literal>.</literal> to indicate the DNS root domain that is the implied suffix of all DNS domains) to use the + system DNS server defined with <varname>DNS=</varname> preferably for all domains.</para></listitem> </varlistentry> <varlistentry> @@ -119,8 +119,8 @@ <literal>resolve</literal>, only resolution support is enabled, but responding is disabled. Note that <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> - also maintains per-interface LLMNR settings. LLMNR will be - enabled on an interface only if the per-interface and the + also maintains per-link LLMNR settings. LLMNR will be + enabled on a link only if the per-link and the global setting is on.</para></listitem> </varlistentry> @@ -181,9 +181,9 @@ <para>In addition to this global DNSSEC setting <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> - also maintains per-interface DNSSEC settings. For system DNS + also maintains per-link DNSSEC settings. For system DNS servers (see above), only the global DNSSEC setting is in - effect. For per-interface DNS servers the per-interface + effect. For per-link DNS servers the per-link setting is in effect, unless it is unset in which case the global setting is used instead.</para> diff --git a/man/systemd.network.xml b/man/systemd.network.xml index 5a6383cfc2..f88751b672 100644 --- a/man/systemd.network.xml +++ b/man/systemd.network.xml @@ -396,21 +396,37 @@ described in <citerefentry project='man-pages'><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. This option may be specified more than once. This setting is read by - <citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry></para> + <citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> </listitem> </varlistentry> <varlistentry> <term><varname>Domains=</varname></term> <listitem> - <para>The domains used for DNS resolution over this link. This setting is read by - <citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry></para> + <para>The domains used for DNS host name resolution on this link. Takes a list of DNS domain names which + are used as search suffixes for extending single-label host names (host names containing no dots) to become + fully qualified domain names (FQDNs). If a single-label host name is resolved on this interface, each of + the specified search domains are appended to it in turn, converting it into a fully qualified domain name, + until one of them may be successfully resolved.</para> + + <para>The specified domains are also used for routing of DNS queries: look-ups for host names ending in the + domains specified here are preferably routed to the DNS servers configured for this interface. If a domain + name is prefixed with <literal>~</literal>, the domain name becomes a pure "routing" domain, is used for + DNS query routing purposes only and is not used in the described domain search logic. By specifying a + routing domain of <literal>~.</literal> (the tilda indicating definition of a routing domain, the dot + referring to the DNS root domain which is the implied suffix of all valid DNS names) it is possible to + route all DNS traffic preferably to the DNS server specified for this interface. The route domain logic is + particularly useful on multi-homed hosts with DNS servers serving particular private DNS zones on each + interface.</para> + + <para>This setting is read by + <citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> </listitem> </varlistentry> <varlistentry> <term><varname>NTP=</varname></term> <listitem> <para>An NTP server address. This option may be specified more than once. This setting is read by - <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry></para> + <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> </listitem> </varlistentry> <varlistentry> @@ -701,15 +717,20 @@ <varlistentry> <term><varname>UseDomains=</varname></term> <listitem> - <para>When true (not the default), the domain name - received from the DHCP server will be used for DNS - resolution over this link. When a name cannot be resolved - as specified, the domain name will be used a suffix and - name resolution of that will be attempted.</para> - - <para>This corresponds to the <option>domain</option> - option in <citerefentry project='man-pages'><refentrytitle>resolv.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry> - and should not be enabled on untrusted networks.</para> + <para>Takes a boolean argument, or a the special value <literal>route</literal>. When true, the domain name + received from the DHCP server will be used as DNS search domain over this link, similar to the effect of + the <option>Domains=</option> setting. If set to <literal>route</literal>, the domain name received from + the DHCP server will be used for routing DNS queries only, but not for searching, similar to the effect of + the <option>Domains=</option> setting when the argument is prefixed with <literal>~</literal>. Defaults to + false.</para> + + <para>It is recommended to enable this option only on trusted networks, as setting this affects resolution + of all host names, in particular to single-label names. It is generally safer to use the supplied domain + only as routing domain, rather than as search domain, in order to not have it affect local resolution of + single-label names.</para> + + <para>When set to true, this setting corresponds to the <option>domain</option> option in <citerefentry + project='man-pages'><refentrytitle>resolv.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> </listitem> </varlistentry> <varlistentry> diff --git a/src/basic/fileio.c b/src/basic/fileio.c index 5ed5460904..3ff70310e1 100644 --- a/src/basic/fileio.c +++ b/src/basic/fileio.c @@ -1251,3 +1251,32 @@ int read_timestamp_file(const char *fn, usec_t *ret) { *ret = (usec_t) t; return 0; } + +int fputs_with_space(FILE *f, const char *s, const char *separator, bool *space) { + int r; + + assert(s); + + /* Outputs the specified string with fputs(), but optionally prefixes it with a separator. The *space parameter + * when specified shall initially point to a boolean variable initialized to false. It is set to true after the + * first invocation. This call is supposed to be use in loops, where a separator shall be inserted between each + * element, but not before the first one. */ + + if (!f) + f = stdout; + + if (space) { + if (!separator) + separator = " "; + + if (*space) { + r = fputs(separator, f); + if (r < 0) + return r; + } + + *space = true; + } + + return fputs(s, f); +} diff --git a/src/basic/fileio.h b/src/basic/fileio.h index 95e8698941..9e09574133 100644 --- a/src/basic/fileio.h +++ b/src/basic/fileio.h @@ -82,3 +82,5 @@ int tempfn_random_child(const char *p, const char *extra, char **ret); int write_timestamp_file_atomic(const char *fn, usec_t n); int read_timestamp_file(const char *fn, usec_t *ret); + +int fputs_with_space(FILE *f, const char *s, const char *separator, bool *space); diff --git a/src/basic/ordered-set.c b/src/basic/ordered-set.c new file mode 100644 index 0000000000..2e0bdf6488 --- /dev/null +++ b/src/basic/ordered-set.c @@ -0,0 +1,64 @@ +/*** + This file is part of systemd. + + Copyright 2016 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 "ordered-set.h" +#include "strv.h" + +int ordered_set_consume(OrderedSet *s, void *p) { + int r; + + r = ordered_set_put(s, p); + if (r <= 0) + free(p); + + return r; +} + +int ordered_set_put_strdup(OrderedSet *s, const char *p) { + char *c; + int r; + + assert(s); + assert(p); + + c = strdup(p); + if (!c) + return -ENOMEM; + + r = ordered_set_consume(s, c); + if (r == -EEXIST) + return 0; + + return r; +} + +int ordered_set_put_strdupv(OrderedSet *s, char **l) { + int n = 0, r; + char **i; + + STRV_FOREACH(i, l) { + r = ordered_set_put_strdup(s, *i); + if (r < 0) + return r; + + n += r; + } + + return n; +} diff --git a/src/basic/ordered-set.h b/src/basic/ordered-set.h index da10e90ff2..ab185c11aa 100644 --- a/src/basic/ordered-set.h +++ b/src/basic/ordered-set.h @@ -62,9 +62,15 @@ static inline bool ordered_set_iterate(OrderedSet *s, Iterator *i, void **value) return ordered_hashmap_iterate((OrderedHashmap*) s, i, value, NULL); } +int ordered_set_consume(OrderedSet *s, void *p); +int ordered_set_put_strdup(OrderedSet *s, const char *p); +int ordered_set_put_strdupv(OrderedSet *s, char **l); + #define ORDERED_SET_FOREACH(e, s, i) \ for ((i) = ITERATOR_FIRST; ordered_set_iterate((s), &(i), (void**)&(e)); ) DEFINE_TRIVIAL_CLEANUP_FUNC(OrderedSet*, ordered_set_free); +DEFINE_TRIVIAL_CLEANUP_FUNC(OrderedSet*, ordered_set_free_free); #define _cleanup_ordered_set_free_ _cleanup_(ordered_set_freep) +#define _cleanup_ordered_set_free_free_ _cleanup_(ordered_set_free_freep) diff --git a/src/basic/strv.c b/src/basic/strv.c index 0a3d15706f..5532c53ad1 100644 --- a/src/basic/strv.c +++ b/src/basic/strv.c @@ -29,6 +29,7 @@ #include "alloc-util.h" #include "escape.h" #include "extract-word.h" +#include "fileio.h" #include "string-util.h" #include "strv.h" #include "util.h" @@ -871,3 +872,22 @@ rollback: nl[k] = NULL; return -ENOMEM; } + +int fputstrv(FILE *f, char **l, const char *separator, bool *space) { + bool b = false; + char **s; + int r; + + /* Like fputs(), but for strv, and with a less stupid argument order */ + + if (!space) + space = &b; + + STRV_FOREACH(s, l) { + r = fputs_with_space(f, *s, separator, space); + if (r < 0) + return r; + } + + return 0; +} diff --git a/src/basic/strv.h b/src/basic/strv.h index bb61db2638..560f90115c 100644 --- a/src/basic/strv.h +++ b/src/basic/strv.h @@ -169,3 +169,5 @@ char ***strv_free_free(char ***l); char **strv_skip(char **l, size_t n); int strv_extend_n(char ***l, const char *value, size_t n); + +int fputstrv(FILE *f, char **l, const char *separator, bool *space); diff --git a/src/journal/coredump.c b/src/journal/coredump.c index 7df59fe29b..8298b02439 100644 --- a/src/journal/coredump.c +++ b/src/journal/coredump.c @@ -794,6 +794,8 @@ int main(int argc, char* argv[]) { IOVEC_SET_STRING(iovec[j++], core_timestamp); IOVEC_SET_STRING(iovec[j++], "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1"); + + assert_cc(2 == LOG_CRIT); IOVEC_SET_STRING(iovec[j++], "PRIORITY=2"); /* Vacuum before we write anything again */ diff --git a/src/journal/journal-send.c b/src/journal/journal-send.c index 44fa11a00e..def4caab92 100644 --- a/src/journal/journal-send.c +++ b/src/journal/journal-send.c @@ -372,6 +372,7 @@ static int fill_iovec_perror_and_send(const char *message, int skip, struct iove xsprintf(error, "ERRNO=%i", _saved_errno_); + assert_cc(3 == LOG_ERR); IOVEC_SET_STRING(iov[skip+0], "PRIORITY=3"); IOVEC_SET_STRING(iov[skip+1], buffer); IOVEC_SET_STRING(iov[skip+2], error); diff --git a/src/journal/journald-audit.c b/src/journal/journald-audit.c index 3c13fe0d67..28970131e7 100644 --- a/src/journal/journald-audit.c +++ b/src/journal/journald-audit.c @@ -397,8 +397,8 @@ static void process_audit_string(Server *s, int type, const char *data, size_t s sprintf(id_field, "_AUDIT_ID=%" PRIu64, id); IOVEC_SET_STRING(iov[n_iov++], id_field); - assert_cc(32 == LOG_AUTH); - IOVEC_SET_STRING(iov[n_iov++], "SYSLOG_FACILITY=32"); + assert_cc(4 == LOG_FAC(LOG_AUTH)); + IOVEC_SET_STRING(iov[n_iov++], "SYSLOG_FACILITY=4"); IOVEC_SET_STRING(iov[n_iov++], "SYSLOG_IDENTIFIER=audit"); type_name = audit_type_name_alloca(type); diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c index 8c1b064e86..fd802b4461 100644 --- a/src/journal/journald-server.c +++ b/src/journal/journald-server.c @@ -866,10 +866,12 @@ void server_driver_message(Server *s, sd_id128_t message_id, const char *format, assert(s); assert(format); + assert_cc(3 == LOG_FAC(LOG_DAEMON)); IOVEC_SET_STRING(iovec[n++], "SYSLOG_FACILITY=3"); IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=systemd-journald"); IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver"); + assert_cc(6 == LOG_INFO); IOVEC_SET_STRING(iovec[n++], "PRIORITY=6"); if (!sd_id128_equal(message_id, SD_ID128_NULL)) { diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c index f466b07503..7a119fd488 100644 --- a/src/libsystemd-network/sd-dhcp-lease.c +++ b/src/libsystemd-network/sd-dhcp-lease.c @@ -353,6 +353,38 @@ static int lease_parse_string(const uint8_t *option, size_t len, char **ret) { return 0; } +static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) { + _cleanup_free_ char *name = NULL, *normalized = NULL; + int r; + + assert(option); + assert(ret); + + r = lease_parse_string(option, len, &name); + if (r < 0) + return r; + if (!name) { + *ret = mfree(*ret); + return 0; + } + + r = dns_name_normalize(name, &normalized); + if (r < 0) + return r; + + if (is_localhost(normalized)) + return -EINVAL; + + if (dns_name_is_root(normalized)) + return -EINVAL; + + free(*ret); + *ret = normalized; + normalized = NULL; + + return 0; +} + static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) { assert(option); assert(ret); @@ -547,59 +579,23 @@ int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void log_debug_errno(r, "Failed to parse MTU, ignoring: %m"); break; - case SD_DHCP_OPTION_DOMAIN_NAME: { - _cleanup_free_ char *domainname = NULL, *normalized = NULL; - - r = lease_parse_string(option, len, &domainname); + case SD_DHCP_OPTION_DOMAIN_NAME: + r = lease_parse_domain(option, len, &lease->domainname); if (r < 0) { log_debug_errno(r, "Failed to parse domain name, ignoring: %m"); return 0; } - r = dns_name_normalize(domainname, &normalized); - if (r < 0) { - log_debug_errno(r, "Failed to normalize domain name '%s': %m", domainname); - return 0; - } - - if (is_localhost(normalized)) { - log_debug_errno(r, "Detected 'localhost' as suggested domain name, ignoring."); - break; - } - - free(lease->domainname); - lease->domainname = normalized; - normalized = NULL; - break; - } - case SD_DHCP_OPTION_HOST_NAME: { - _cleanup_free_ char *hostname = NULL, *normalized = NULL; - - r = lease_parse_string(option, len, &hostname); + case SD_DHCP_OPTION_HOST_NAME: + r = lease_parse_domain(option, len, &lease->hostname); if (r < 0) { log_debug_errno(r, "Failed to parse host name, ignoring: %m"); return 0; } - r = dns_name_normalize(hostname, &normalized); - if (r < 0) { - log_debug_errno(r, "Failed to normalize host name '%s', ignoring: %m", hostname); - return 0; - } - - if (is_localhost(normalized)) { - log_debug_errno(r, "Detected 'localhost' as suggested host name, ignoring."); - return 0; - } - - free(lease->hostname); - lease->hostname = normalized; - normalized = NULL; - break; - } case SD_DHCP_OPTION_ROOT_PATH: r = lease_parse_string(option, len, &lease->root_path); diff --git a/src/libsystemd/sd-network/sd-network.c b/src/libsystemd/sd-network/sd-network.c index c1f5867ee4..4b7fad9c81 100644 --- a/src/libsystemd/sd-network/sd-network.c +++ b/src/libsystemd/sd-network/sd-network.c @@ -95,10 +95,14 @@ _public_ int sd_network_get_ntp(char ***ret) { return network_get_strv("NTP", ret); } -_public_ int sd_network_get_domains(char ***ret) { +_public_ int sd_network_get_search_domains(char ***ret) { return network_get_strv("DOMAINS", ret); } +_public_ int sd_network_get_route_domains(char ***ret) { + return network_get_strv("ROUTE_DOMAINS", ret); +} + static int network_link_get_string(int ifindex, const char *field, char **ret) { _cleanup_free_ char *s = NULL, *p = NULL; int r; @@ -222,10 +226,14 @@ _public_ int sd_network_link_get_ntp(int ifindex, char ***ret) { return network_link_get_strv(ifindex, "NTP", ret); } -_public_ int sd_network_link_get_domains(int ifindex, char ***ret) { +_public_ int sd_network_link_get_search_domains(int ifindex, char ***ret) { return network_link_get_strv(ifindex, "DOMAINS", ret); } +_public_ int sd_network_link_get_route_domains(int ifindex, char ***ret) { + return network_link_get_strv(ifindex, "ROUTE_DOMAINS", ret); +} + _public_ int sd_network_link_get_carrier_bound_to(int ifindex, char ***ret) { return network_link_get_strv(ifindex, "CARRIER_BOUND_TO", ret); } @@ -234,26 +242,6 @@ _public_ int sd_network_link_get_carrier_bound_by(int ifindex, char ***ret) { return network_link_get_strv(ifindex, "CARRIER_BOUND_BY", ret); } -_public_ int sd_network_link_get_wildcard_domain(int ifindex) { - _cleanup_free_ char *p = NULL, *s = NULL; - int r; - - assert_return(ifindex > 0, -EINVAL); - - if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, "WILDCARD_DOMAIN", &s, NULL); - if (r == -ENOENT) - return -ENODATA; - if (r < 0) - return r; - if (isempty(s)) - return -ENODATA; - - return parse_boolean(s); -} - static inline int MONITOR_TO_FD(sd_network_monitor *m) { return (int) (unsigned long) m - 1; } diff --git a/src/network/networkctl.c b/src/network/networkctl.c index 4a8fa4d8f3..253692aa64 100644 --- a/src/network/networkctl.c +++ b/src/network/networkctl.c @@ -490,6 +490,9 @@ static int dump_addresses( static void dump_list(const char *prefix, char **l) { char **i; + if (strv_isempty(l)) + return; + STRV_FOREACH(i, l) { printf("%*s%s\n", (int) strlen(prefix), @@ -502,7 +505,7 @@ static int link_status_one( sd_netlink *rtnl, sd_hwdb *hwdb, const char *name) { - _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **domains = NULL; + _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **search_domains = NULL, **route_domains = NULL; _cleanup_free_ char *setup_state = NULL, *operational_state = NULL, *tz = NULL; _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; _cleanup_(sd_device_unrefp) sd_device *d = NULL; @@ -552,7 +555,6 @@ static int link_status_one( return rtnl_log_parse_error(r); have_mac = sd_netlink_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0; - if (have_mac) { const uint8_t *p; bool all_zeroes = true; @@ -567,44 +569,35 @@ static int link_status_one( have_mac = false; } - sd_netlink_message_read_u32(reply, IFLA_MTU, &mtu); + (void) sd_netlink_message_read_u32(reply, IFLA_MTU, &mtu); - sd_network_link_get_operational_state(ifindex, &operational_state); + (void) sd_network_link_get_operational_state(ifindex, &operational_state); operational_state_to_color(operational_state, &on_color_operational, &off_color_operational); - sd_network_link_get_setup_state(ifindex, &setup_state); + (void) sd_network_link_get_setup_state(ifindex, &setup_state); setup_state_to_color(setup_state, &on_color_setup, &off_color_setup); - sd_network_link_get_dns(ifindex, &dns); - sd_network_link_get_domains(ifindex, &domains); - r = sd_network_link_get_wildcard_domain(ifindex); - if (r > 0) { - char *wildcard; - - wildcard = strdup("*"); - if (!wildcard) - return log_oom(); - - if (strv_consume(&domains, wildcard) < 0) - return log_oom(); - } + (void) sd_network_link_get_dns(ifindex, &dns); + (void) sd_network_link_get_search_domains(ifindex, &search_domains); + (void) sd_network_link_get_route_domains(ifindex, &route_domains); + (void) sd_network_link_get_ntp(ifindex, &ntp); sprintf(devid, "n%i", ifindex); - (void)sd_device_new_from_device_id(&d, devid); + (void) sd_device_new_from_device_id(&d, devid); if (d) { - (void)sd_device_get_property_value(d, "ID_NET_LINK_FILE", &link); - (void)sd_device_get_property_value(d, "ID_NET_DRIVER", &driver); - (void)sd_device_get_property_value(d, "ID_PATH", &path); + (void) sd_device_get_property_value(d, "ID_NET_LINK_FILE", &link); + (void) sd_device_get_property_value(d, "ID_NET_DRIVER", &driver); + (void) sd_device_get_property_value(d, "ID_PATH", &path); r = sd_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE", &vendor); if (r < 0) - (void)sd_device_get_property_value(d, "ID_VENDOR", &vendor); + (void) sd_device_get_property_value(d, "ID_VENDOR", &vendor); r = sd_device_get_property_value(d, "ID_MODEL_FROM_DATABASE", &model); if (r < 0) - (void)sd_device_get_property_value(d, "ID_MODEL", &model); + (void) sd_device_get_property_value(d, "ID_MODEL", &model); } link_get_type_string(iftype, d, &t); @@ -653,20 +646,14 @@ static int link_status_one( dump_addresses(rtnl, " Address: ", ifindex); dump_gateways(rtnl, hwdb, " Gateway: ", ifindex); - if (!strv_isempty(dns)) - dump_list(" DNS: ", dns); - if (!strv_isempty(domains)) - dump_list(" Domain: ", domains); + dump_list(" DNS: ", dns); + dump_list(" Search Domains: ", search_domains); + dump_list(" Route Domains: ", route_domains); - (void) sd_network_link_get_ntp(ifindex, &ntp); - if (!strv_isempty(ntp)) - dump_list(" NTP: ", ntp); + dump_list(" NTP: ", ntp); - if (!strv_isempty(carrier_bound_to)) - dump_list("Carrier Bound To: ", carrier_bound_to); - - if (!strv_isempty(carrier_bound_by)) - dump_list("Carrier Bound By: ", carrier_bound_by); + dump_list("Carrier Bound To: ", carrier_bound_to); + dump_list("Carrier Bound By: ", carrier_bound_by); (void) sd_network_link_get_timezone(ifindex, &tz); if (tz) @@ -691,30 +678,30 @@ static int link_status(int argc, char *argv[], void *userdata) { if (argc <= 1 && !arg_all) { _cleanup_free_ char *operational_state = NULL; - _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **domains = NULL; + _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **search_domains = NULL, **route_domains; const char *on_color_operational, *off_color_operational; sd_network_get_operational_state(&operational_state); operational_state_to_color(operational_state, &on_color_operational, &off_color_operational); - printf("%s%s%s State: %s%s%s\n", + printf("%s%s%s State: %s%s%s\n", on_color_operational, draw_special_char(DRAW_BLACK_CIRCLE), off_color_operational, on_color_operational, strna(operational_state), off_color_operational); - dump_addresses(rtnl, " Address: ", 0); - dump_gateways(rtnl, hwdb, " Gateway: ", 0); + dump_addresses(rtnl, " Address: ", 0); + dump_gateways(rtnl, hwdb, " Gateway: ", 0); sd_network_get_dns(&dns); - if (!strv_isempty(dns)) - dump_list(" DNS: ", dns); + dump_list(" DNS: ", dns); + + sd_network_get_search_domains(&search_domains); + dump_list("Search Domains: ", search_domains); - sd_network_get_domains(&domains); - if (!strv_isempty(domains)) - dump_list(" Domain: ", domains); + sd_network_get_route_domains(&route_domains); + dump_list(" Route Domains: ", route_domains); sd_network_get_ntp(&ntp); - if (!strv_isempty(ntp)) - dump_list(" NTP: ", ntp); + dump_list(" NTP: ", ntp); return 0; } diff --git a/src/network/networkd-dhcp4.c b/src/network/networkd-dhcp4.c index c7d22876bc..59eccb392f 100644 --- a/src/network/networkd-dhcp4.c +++ b/src/network/networkd-dhcp4.c @@ -158,7 +158,7 @@ static int dhcp_lease_lost(Link *link) { log_link_warning(link, "DHCP lease lost"); - if (link->network->dhcp_routes) { + if (link->network->dhcp_use_routes) { _cleanup_free_ sd_dhcp_route **routes = NULL; int n, i; @@ -223,7 +223,7 @@ static int dhcp_lease_lost(Link *link) { } } - if (link->network->dhcp_mtu) { + if (link->network->dhcp_use_mtu) { uint16_t mtu; r = sd_dhcp_lease_get_mtu(link->dhcp_lease, &mtu); @@ -238,11 +238,11 @@ static int dhcp_lease_lost(Link *link) { } } - if (link->network->dhcp_hostname) { + if (link->network->dhcp_use_hostname) { const char *hostname = NULL; - if (link->network->hostname) - hostname = link->network->hostname; + if (link->network->dhcp_hostname) + hostname = link->network->dhcp_hostname; else (void) sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname); @@ -412,7 +412,7 @@ static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) { link->dhcp_lease = sd_dhcp_lease_ref(lease); link_dirty(link); - if (link->network->dhcp_mtu) { + if (link->network->dhcp_use_mtu) { uint16_t mtu; r = sd_dhcp_lease_get_mtu(lease, &mtu); @@ -423,11 +423,11 @@ static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) { } } - if (link->network->dhcp_hostname) { + if (link->network->dhcp_use_hostname) { const char *hostname = NULL; - if (link->network->hostname) - hostname = link->network->hostname; + if (link->network->dhcp_hostname) + hostname = link->network->dhcp_hostname; else (void) sd_dhcp_lease_get_hostname(lease, &hostname); @@ -438,7 +438,7 @@ static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) { } } - if (link->network->dhcp_timezone) { + if (link->network->dhcp_use_timezone) { const char *tz = NULL; (void) sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); @@ -571,14 +571,14 @@ int dhcp4_configure(Link *link) { return r; } - if (link->network->dhcp_mtu) { + if (link->network->dhcp_use_mtu) { r = sd_dhcp_client_set_request_option(link->dhcp_client, SD_DHCP_OPTION_INTERFACE_MTU); if (r < 0) return r; } - if (link->network->dhcp_routes) { + if (link->network->dhcp_use_routes) { r = sd_dhcp_client_set_request_option(link->dhcp_client, SD_DHCP_OPTION_STATIC_ROUTE); if (r < 0) @@ -589,7 +589,7 @@ int dhcp4_configure(Link *link) { return r; } - /* Always acquire the timezone and NTP*/ + /* Always acquire the timezone and NTP */ r = sd_dhcp_client_set_request_option(link->dhcp_client, SD_DHCP_OPTION_NTP_SERVER); if (r < 0) return r; @@ -598,18 +598,18 @@ int dhcp4_configure(Link *link) { if (r < 0) return r; - if (link->network->dhcp_sendhost) { + if (link->network->dhcp_send_hostname) { _cleanup_free_ char *hostname = NULL; const char *hn = NULL; - if (!link->network->hostname) { + if (!link->network->dhcp_hostname) { hostname = gethostname_malloc(); if (!hostname) return -ENOMEM; hn = hostname; } else - hn = link->network->hostname; + hn = link->network->dhcp_hostname; if (!is_localhost(hn)) { r = sd_dhcp_client_set_hostname(link->dhcp_client, hn); diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index bbda691c08..a2f0eceb6d 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -767,7 +767,7 @@ static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { addresses[n_addresses++] = ia; } - if (link->network->dhcp_dns && + if (link->network->dhcp_use_dns && link->dhcp_lease) { const struct in_addr *da = NULL; int n; @@ -812,7 +812,7 @@ static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { addresses[n_addresses++] = ia; } - if (link->network->dhcp_ntp && + if (link->network->dhcp_use_ntp && link->dhcp_lease) { const struct in_addr *da = NULL; int n; @@ -2729,9 +2729,10 @@ int link_save(Link *link) { admin_state, oper_state); if (link->network) { - char **address, **domain; bool space; sd_dhcp6_lease *dhcp6_lease = NULL; + const char *dhcp_domainname = NULL; + char **dhcp6_domains = NULL; if (link->dhcp6_client) { r = sd_dhcp6_client_get_lease(link->dhcp6_client, &dhcp6_lease); @@ -2743,14 +2744,9 @@ int link_save(Link *link) { fputs("DNS=", f); space = false; - STRV_FOREACH(address, link->network->dns) { - if (space) - fputc(' ', f); - fputs(*address, f); - space = true; - } + fputstrv(f, link->network->dns, NULL, &space); - if (link->network->dhcp_dns && + if (link->network->dhcp_use_dns && link->dhcp_lease) { const struct in_addr *addresses; @@ -2763,7 +2759,7 @@ int link_save(Link *link) { } } - if (link->network->dhcp_dns && dhcp6_lease) { + if (link->network->dhcp_use_dns && dhcp6_lease) { struct in6_addr *in6_addrs; r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); @@ -2778,14 +2774,9 @@ int link_save(Link *link) { fputs("NTP=", f); space = false; - STRV_FOREACH(address, link->network->ntp) { - if (space) - fputc(' ', f); - fputs(*address, f); - space = true; - } + fputstrv(f, link->network->ntp, NULL, &space); - if (link->network->dhcp_ntp && + if (link->network->dhcp_use_ntp && link->dhcp_lease) { const struct in_addr *addresses; @@ -2798,10 +2789,9 @@ int link_save(Link *link) { } } - if (link->network->dhcp_ntp && dhcp6_lease) { + if (link->network->dhcp_use_ntp && dhcp6_lease) { struct in6_addr *in6_addrs; char **hosts; - char **hostname; r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, &in6_addrs); @@ -2813,58 +2803,41 @@ int link_save(Link *link) { } r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); - if (r > 0) { - STRV_FOREACH(hostname, hosts) { - if (space) - fputc(' ', f); - fputs(*hostname, f); - space = true; - } - } + if (r > 0) + fputstrv(f, hosts, NULL, &space); } fputc('\n', f); - fputs("DOMAINS=", f); - space = false; - STRV_FOREACH(domain, link->network->domains) { - if (space) - fputc(' ', f); - fputs(*domain, f); - space = true; + if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { + if (link->dhcp_lease) + (void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname); + + if (dhcp6_lease) + (void) sd_dhcp6_lease_get_domains(dhcp6_lease, &dhcp6_domains); } - if (link->network->dhcp_domains && - link->dhcp_lease) { - const char *domainname; + fputs("DOMAINS=", f); + fputstrv(f, link->network->search_domains, NULL, &space); - r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); - if (r >= 0) { - if (space) - fputc(' ', f); - fputs(domainname, f); - space = true; - } - } + if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES && dhcp_domainname) + fputs_with_space(f, dhcp_domainname, NULL, &space); - if (link->network->dhcp_domains && dhcp6_lease) { - char **domains; - - r = sd_dhcp6_lease_get_domains(dhcp6_lease, &domains); - if (r >= 0) { - STRV_FOREACH(domain, domains) { - if (space) - fputc(' ', f); - fputs(*domain, f); - space = true; - } - } - } + if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES && dhcp6_domains) + fputstrv(f, dhcp6_domains, NULL, &space); fputc('\n', f); - fprintf(f, "WILDCARD_DOMAIN=%s\n", - yes_no(link->network->wildcard_domain)); + fputs("ROUTE_DOMAINS=", f); + fputstrv(f, link->network->route_domains, NULL, NULL); + + if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE && dhcp_domainname) + fputs_with_space(f, dhcp_domainname, NULL, &space); + + if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE && dhcp6_domains) + fputstrv(f, dhcp6_domains, NULL, &space); + + fputc('\n', f); fprintf(f, "LLMNR=%s\n", resolve_support_to_string(link->network->llmnr)); @@ -2880,12 +2853,8 @@ int link_save(Link *link) { fputs("DNSSEC_NTA=", f); space = false; - SET_FOREACH(n, link->network->dnssec_negative_trust_anchors, i) { - if (space) - fputc(' ', f); - fputs(n, f); - space = true; - } + SET_FOREACH(n, link->network->dnssec_negative_trust_anchors, i) + fputs_with_space(f, n, NULL, &space); fputc('\n', f); } @@ -2925,12 +2894,8 @@ int link_save(Link *link) { bool space = false; fputs("CARRIER_BOUND_TO=", f); - HASHMAP_FOREACH(carrier, link->bound_to_links, i) { - if (space) - fputc(' ', f); - fputs(carrier->ifname, f); - space = true; - } + HASHMAP_FOREACH(carrier, link->bound_to_links, i) + fputs_with_space(f, carrier->ifname, NULL, &space); fputc('\n', f); } @@ -2940,12 +2905,8 @@ int link_save(Link *link) { bool space = false; fputs("CARRIER_BOUND_BY=", f); - HASHMAP_FOREACH(carrier, link->bound_by_links, i) { - if (space) - fputc(' ', f); - fputs(carrier->ifname, f); - space = true; - } + HASHMAP_FOREACH(carrier, link->bound_by_links, i) + fputs_with_space(f, carrier->ifname, NULL, &space); fputc('\n', f); } diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c index 24f5304cb0..c10635d202 100644 --- a/src/network/networkd-manager.c +++ b/src/network/networkd-manager.c @@ -29,12 +29,14 @@ #include "bus-util.h" #include "conf-parser.h" #include "def.h" +#include "dns-domain.h" #include "fd-util.h" #include "fileio.h" #include "libudev-private.h" #include "local-addresses.h" #include "netlink-util.h" #include "networkd.h" +#include "ordered-set.h" #include "path-util.h" #include "set.h" #include "udev-util.h" @@ -776,7 +778,7 @@ static int manager_connect_rtnl(Manager *m) { return 0; } -static int set_put_in_addr(Set *s, const struct in_addr *address) { +static int ordered_set_put_in_addr(OrderedSet *s, const struct in_addr *address) { char *p; int r; @@ -786,21 +788,21 @@ static int set_put_in_addr(Set *s, const struct in_addr *address) { if (r < 0) return r; - r = set_consume(s, p); + r = ordered_set_consume(s, p); if (r == -EEXIST) return 0; return r; } -static int set_put_in_addrv(Set *s, const struct in_addr *addresses, int n) { +static int ordered_set_put_in_addrv(OrderedSet *s, const struct in_addr *addresses, int n) { int r, i, c = 0; assert(s); assert(n <= 0 || addresses); for (i = 0; i < n; i++) { - r = set_put_in_addr(s, addresses+i); + r = ordered_set_put_in_addr(s, addresses+i); if (r < 0) return r; @@ -810,27 +812,24 @@ static int set_put_in_addrv(Set *s, const struct in_addr *addresses, int n) { return c; } -static void print_string_set(FILE *f, const char *field, Set *s) { +static void print_string_set(FILE *f, const char *field, OrderedSet *s) { bool space = false; Iterator i; char *p; - if (set_isempty(s)) + if (ordered_set_isempty(s)) return; fputs(field, f); - SET_FOREACH(p, s, i) { - if (space) - fputc(' ', f); - fputs(p, f); - space = true; - } + ORDERED_SET_FOREACH(p, s, i) + fputs_with_space(f, p, NULL, &space); + fputc('\n', f); } static int manager_save(Manager *m) { - _cleanup_set_free_free_ Set *dns = NULL, *ntp = NULL, *domains = NULL; + _cleanup_ordered_set_free_free_ OrderedSet *dns = NULL, *ntp = NULL, *search_domains = NULL, *route_domains = NULL; Link *link; Iterator i; _cleanup_free_ char *temp_path = NULL; @@ -843,16 +842,20 @@ static int manager_save(Manager *m) { assert(m->state_file); /* We add all NTP and DNS server to a set, to filter out duplicates */ - dns = set_new(&string_hash_ops); + dns = ordered_set_new(&string_hash_ops); if (!dns) return -ENOMEM; - ntp = set_new(&string_hash_ops); + ntp = ordered_set_new(&string_hash_ops); if (!ntp) return -ENOMEM; - domains = set_new(&string_hash_ops); - if (!domains) + search_domains = ordered_set_new(&dns_name_hash_ops); + if (!search_domains) + return -ENOMEM; + + route_domains = ordered_set_new(&dns_name_hash_ops); + if (!route_domains) return -ENOMEM; HASHMAP_FOREACH(link, m->links, i) { @@ -866,15 +869,19 @@ static int manager_save(Manager *m) { continue; /* First add the static configured entries */ - r = set_put_strdupv(dns, link->network->dns); + r = ordered_set_put_strdupv(dns, link->network->dns); if (r < 0) return r; - r = set_put_strdupv(ntp, link->network->ntp); + r = ordered_set_put_strdupv(ntp, link->network->ntp); if (r < 0) return r; - r = set_put_strdupv(domains, link->network->domains); + r = ordered_set_put_strdupv(search_domains, link->network->search_domains); + if (r < 0) + return r; + + r = ordered_set_put_strdupv(route_domains, link->network->route_domains); if (r < 0) return r; @@ -882,36 +889,41 @@ static int manager_save(Manager *m) { continue; /* Secondly, add the entries acquired via DHCP */ - if (link->network->dhcp_dns) { + if (link->network->dhcp_use_dns) { const struct in_addr *addresses; r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); if (r > 0) { - r = set_put_in_addrv(dns, addresses, r); + r = ordered_set_put_in_addrv(dns, addresses, r); if (r < 0) return r; } else if (r < 0 && r != -ENODATA) return r; } - if (link->network->dhcp_ntp) { + if (link->network->dhcp_use_ntp) { const struct in_addr *addresses; r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); if (r > 0) { - r = set_put_in_addrv(ntp, addresses, r); + r = ordered_set_put_in_addrv(ntp, addresses, r); if (r < 0) return r; } else if (r < 0 && r != -ENODATA) return r; } - if (link->network->dhcp_domains) { + if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { const char *domainname; r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); if (r >= 0) { - r = set_put_strdup(domains, domainname); + + if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) + r = ordered_set_put_strdup(search_domains, domainname); + else + r = ordered_set_put_strdup(route_domains, domainname); + if (r < 0) return r; } else if (r != -ENODATA) @@ -934,7 +946,8 @@ static int manager_save(Manager *m) { print_string_set(f, "DNS=", dns); print_string_set(f, "NTP=", ntp); - print_string_set(f, "DOMAINS=", domains); + print_string_set(f, "DOMAINS=", search_domains); + print_string_set(f, "ROUTE_DOMAINS=", route_domains); r = fflush_and_check(f); if (r < 0) diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf index 2f2a36ccca..409df1709f 100644 --- a/src/network/networkd-network-gperf.gperf +++ b/src/network/networkd-network-gperf.gperf @@ -43,7 +43,7 @@ Network.IPv6Token, config_parse_ipv6token, Network.LLDP, config_parse_bool, 0, offsetof(Network, lldp) Network.Address, config_parse_address, 0, 0 Network.Gateway, config_parse_gateway, 0, 0 -Network.Domains, config_parse_domains, 0, offsetof(Network, domains) +Network.Domains, config_parse_domains, 0, 0 Network.DNS, config_parse_strv, 0, offsetof(Network, dns) Network.LLMNR, config_parse_resolve_support, 0, offsetof(Network, llmnr) Network.MulticastDNS, config_parse_resolve_support, 0, offsetof(Network, mdns) @@ -68,19 +68,19 @@ Route.Metric, config_parse_route_priority, Route.Scope, config_parse_route_scope, 0, 0 Route.PreferredSource, config_parse_preferred_src, 0, 0 DHCP.ClientIdentifier, config_parse_dhcp_client_identifier, 0, offsetof(Network, dhcp_client_identifier) -DHCP.UseDNS, config_parse_bool, 0, offsetof(Network, dhcp_dns) -DHCP.UseNTP, config_parse_bool, 0, offsetof(Network, dhcp_ntp) -DHCP.UseMTU, config_parse_bool, 0, offsetof(Network, dhcp_mtu) -DHCP.UseHostname, config_parse_bool, 0, offsetof(Network, dhcp_hostname) -DHCP.UseDomains, config_parse_bool, 0, offsetof(Network, dhcp_domains) -DHCP.UseRoutes, config_parse_bool, 0, offsetof(Network, dhcp_routes) -DHCP.SendHostname, config_parse_bool, 0, offsetof(Network, dhcp_sendhost) -DHCP.Hostname, config_parse_hostname, 0, offsetof(Network, hostname) +DHCP.UseDNS, config_parse_bool, 0, offsetof(Network, dhcp_use_dns) +DHCP.UseNTP, config_parse_bool, 0, offsetof(Network, dhcp_use_ntp) +DHCP.UseMTU, config_parse_bool, 0, offsetof(Network, dhcp_use_mtu) +DHCP.UseHostname, config_parse_bool, 0, offsetof(Network, dhcp_use_hostname) +DHCP.UseDomains, config_parse_dhcp_use_domains, 0, offsetof(Network, dhcp_use_domains) +DHCP.UseRoutes, config_parse_bool, 0, offsetof(Network, dhcp_use_routes) +DHCP.SendHostname, config_parse_bool, 0, offsetof(Network, dhcp_send_hostname) +DHCP.Hostname, config_parse_hostname, 0, offsetof(Network, dhcp_hostname) DHCP.RequestBroadcast, config_parse_bool, 0, offsetof(Network, dhcp_broadcast) DHCP.CriticalConnection, config_parse_bool, 0, offsetof(Network, dhcp_critical) DHCP.VendorClassIdentifier, config_parse_string, 0, offsetof(Network, dhcp_vendor_class_identifier) DHCP.RouteMetric, config_parse_unsigned, 0, offsetof(Network, dhcp_route_metric) -DHCP.UseTimezone, config_parse_bool, 0, offsetof(Network, dhcp_timezone) +DHCP.UseTimezone, config_parse_bool, 0, offsetof(Network, dhcp_use_timezone) DHCPServer.MaxLeaseTimeSec, config_parse_sec, 0, offsetof(Network, dhcp_server_max_lease_time_usec) DHCPServer.DefaultLeaseTimeSec, config_parse_sec, 0, offsetof(Network, dhcp_server_default_lease_time_usec) DHCPServer.EmitDNS, config_parse_bool, 0, offsetof(Network, dhcp_server_emit_dns) @@ -101,9 +101,9 @@ BridgeFDB.MACAddress, config_parse_fdb_hwaddr, BridgeFDB.VLANId, config_parse_fdb_vlan_id, 0, 0 /* backwards compatibility: do not add new entries to this section */ Network.IPv4LL, config_parse_ipv4ll, 0, offsetof(Network, link_local) -DHCPv4.UseDNS, config_parse_bool, 0, offsetof(Network, dhcp_dns) -DHCPv4.UseMTU, config_parse_bool, 0, offsetof(Network, dhcp_mtu) -DHCPv4.UseHostname, config_parse_bool, 0, offsetof(Network, dhcp_hostname) -DHCP.UseDomainName, config_parse_bool, 0, offsetof(Network, dhcp_domains) -DHCPv4.UseDomainName, config_parse_bool, 0, offsetof(Network, dhcp_domains) +DHCPv4.UseDNS, config_parse_bool, 0, offsetof(Network, dhcp_use_dns) +DHCPv4.UseMTU, config_parse_bool, 0, offsetof(Network, dhcp_use_mtu) +DHCPv4.UseHostname, config_parse_bool, 0, offsetof(Network, dhcp_use_hostname) +DHCP.UseDomainName, config_parse_dhcp_use_domains, 0, offsetof(Network, dhcp_use_domains) +DHCPv4.UseDomainName, config_parse_dhcp_use_domains, 0, offsetof(Network, dhcp_use_domains) DHCPv4.CriticalConnection, config_parse_bool, 0, offsetof(Network, dhcp_critical) diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c index c11cb3dcb3..e1a811129d 100644 --- a/src/network/networkd-network.c +++ b/src/network/networkd-network.c @@ -105,11 +105,11 @@ static int network_load_one(Manager *manager, const char *filename) { *d = '\0'; network->dhcp = ADDRESS_FAMILY_NO; - network->dhcp_ntp = true; - network->dhcp_dns = true; - network->dhcp_hostname = true; - network->dhcp_routes = true; - network->dhcp_sendhost = true; + network->dhcp_use_ntp = true; + network->dhcp_use_dns = true; + network->dhcp_use_hostname = true; + network->dhcp_use_routes = true; + network->dhcp_send_hostname = true; network->dhcp_route_metric = DHCP_ROUTE_METRIC; network->dhcp_client_identifier = DHCP_CLIENT_ID_DUID; @@ -227,13 +227,14 @@ void network_free(Network *network) { free(network->description); free(network->dhcp_vendor_class_identifier); - free(network->hostname); + free(network->dhcp_hostname); free(network->mac); strv_free(network->ntp); strv_free(network->dns); - strv_free(network->domains); + strv_free(network->search_domains); + strv_free(network->route_domains); strv_free(network->bind_carrier); netdev_unref(network->bridge); @@ -384,7 +385,10 @@ int network_apply(Manager *manager, Network *network, Link *link) { route->protocol = RTPROT_STATIC; } - if (network->dns || network->ntp || network->domains) { + if (!strv_isempty(network->dns) || + !strv_isempty(network->ntp) || + !strv_isempty(network->search_domains) || + !strv_isempty(network->route_domains)) { manager_dirty(manager); link_dirty(link); } @@ -469,49 +473,85 @@ int config_parse_netdev(const char *unit, return 0; } -int config_parse_domains(const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - Network *network = userdata; - char ***domains = data; - char **domain; +int config_parse_domains( + const char *unit, + const char *filename, + unsigned line, + const char *section, + unsigned section_line, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { + + const char *p; + Network *n = data; int r; - r = config_parse_strv(unit, filename, line, section, section_line, - lvalue, ltype, rvalue, domains, userdata); - if (r < 0) - return r; + assert(n); + assert(lvalue); + assert(rvalue); - strv_uniq(*domains); - network->wildcard_domain = !!strv_find(*domains, "*"); + if (isempty(rvalue)) { + n->search_domains = strv_free(n->search_domains); + n->route_domains = strv_free(n->route_domains); + return 0; + } - STRV_FOREACH(domain, *domains) { - if (is_localhost(*domain)) - log_syntax(unit, LOG_ERR, filename, line, 0, "'localhost' domain names may not be configured, ignoring assignment: %s", *domain); - else { - r = dns_name_is_valid(*domain); - if (r <= 0 && !streq(*domain, "*")) { - if (r < 0) - log_error_errno(r, "Failed to validate domain name: %s: %m", *domain); - if (r == 0) - log_warning("Domain name is not valid, ignoring assignment: %s", *domain); - } else + p = rvalue; + for (;;) { + _cleanup_free_ char *w = NULL, *normalized = NULL; + const char *domain; + bool is_route; + + r = extract_first_word(&p, &w, NULL, 0); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract search or route domain, ignoring: %s", rvalue); + break; + } + if (r == 0) + break; + + is_route = w[0] == '~'; + domain = is_route ? w + 1 : w; + + if (dns_name_is_root(domain) || streq(domain, "*")) { + /* If the root domain appears as is, or the special token "*" is found, we'll consider this as + * routing domain, unconditionally. */ + is_route = true; + domain = "."; /* make sure we don't allow empty strings, thus write the root domain as "." */ + + } else { + r = dns_name_normalize(domain, &normalized); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "'%s' is not a valid domain name, ignoring.", domain); + continue; + } + + domain = normalized; + + if (is_localhost(domain)) { + log_syntax(unit, LOG_ERR, filename, line, 0, "'localhost' domain names may not be configure as search or route domains, ignoring assignment: %s", domain); continue; + } } - strv_remove(*domains, *domain); + if (is_route) { + r = strv_extend(&n->route_domains, domain); + if (r < 0) + return log_oom(); - /* We removed one entry, make sure we don't skip the next one */ - domain--; + } else { + r = strv_extend(&n->search_domains, domain); + if (r < 0) + return log_oom(); + } } + strv_uniq(n->route_domains); + strv_uniq(n->search_domains); + return 0; } @@ -930,7 +970,7 @@ int config_parse_dnssec_negative_trust_anchors( Network *n = data; int r; - assert(filename); + assert(n); assert(lvalue); assert(rvalue); @@ -965,3 +1005,13 @@ int config_parse_dnssec_negative_trust_anchors( return 0; } + +DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp_use_domains, dhcp_use_domains, DHCPUseDomains, "Failed to parse DHCP use domains setting"); + +static const char* const dhcp_use_domains_table[_DHCP_USE_DOMAINS_MAX] = { + [DHCP_USE_DOMAINS_NO] = "no", + [DHCP_USE_DOMAINS_ROUTE] = "route", + [DHCP_USE_DOMAINS_YES] = "yes", +}; + +DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(dhcp_use_domains, DHCPUseDomains, DHCP_USE_DOMAINS_YES); diff --git a/src/network/networkd-network.h b/src/network/networkd-network.h index b07fa41abc..626dfbd40a 100644 --- a/src/network/networkd-network.h +++ b/src/network/networkd-network.h @@ -52,6 +52,14 @@ typedef enum IPv6PrivacyExtensions { _IPV6_PRIVACY_EXTENSIONS_INVALID = -1, } IPv6PrivacyExtensions; +typedef enum DHCPUseDomains { + DHCP_USE_DOMAINS_NO, + DHCP_USE_DOMAINS_YES, + DHCP_USE_DOMAINS_ROUTE, + _DHCP_USE_DOMAINS_MAX, + _DHCP_USE_DOMAINS_INVALID = -1, +} DHCPUseDomains; + struct Network { Manager *manager; @@ -79,17 +87,17 @@ struct Network { AddressFamilyBoolean dhcp; DCHPClientIdentifier dhcp_client_identifier; char *dhcp_vendor_class_identifier; - char *hostname; - bool dhcp_dns; - bool dhcp_ntp; - bool dhcp_mtu; - bool dhcp_hostname; - bool dhcp_domains; - bool dhcp_sendhost; + char *dhcp_hostname; + bool dhcp_use_dns; + bool dhcp_use_ntp; + bool dhcp_use_mtu; + bool dhcp_use_hostname; + DHCPUseDomains dhcp_use_domains; + bool dhcp_send_hostname; bool dhcp_broadcast; bool dhcp_critical; - bool dhcp_routes; - bool dhcp_timezone; + bool dhcp_use_routes; + bool dhcp_use_timezone; unsigned dhcp_route_metric; /* DHCP Server Support */ @@ -141,8 +149,7 @@ struct Network { Hashmap *routes_by_section; Hashmap *fdb_entries_by_section; - bool wildcard_domain; - char **domains, **dns, **ntp, **bind_carrier; + char **search_domains, **route_domains, **dns, **ntp, **bind_carrier; ResolveSupport llmnr; ResolveSupport mdns; @@ -175,6 +182,7 @@ int config_parse_timezone(const char *unit, const char *filename, unsigned line, int config_parse_dhcp_server_dns(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata); int config_parse_dhcp_server_ntp(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata); int config_parse_dnssec_negative_trust_anchors(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata); +int config_parse_dhcp_use_domains(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata); /* Legacy IPv4LL support */ int config_parse_ipv4ll(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata); @@ -188,3 +196,6 @@ int network_object_find(sd_bus *bus, const char *path, const char *interface, vo const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_; IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_; + +const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_; +DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_; diff --git a/src/resolve/resolved-bus.c b/src/resolve/resolved-bus.c index d8e8638327..834ae837de 100644 --- a/src/resolve/resolved-bus.c +++ b/src/resolve/resolved-bus.c @@ -1217,19 +1217,19 @@ static int bus_property_get_search_domains( assert(reply); assert(m); - r = sd_bus_message_open_container(reply, 'a', "(is)"); + r = sd_bus_message_open_container(reply, 'a', "(isb)"); if (r < 0) return r; LIST_FOREACH(domains, d, m->search_domains) { - r = sd_bus_message_append(reply, "(is)", 0, d->name); + r = sd_bus_message_append(reply, "(isb)", 0, d->name, d->route_only); if (r < 0) return r; } HASHMAP_FOREACH(l, m->links, i) { LIST_FOREACH(domains, d, l->search_domains) { - r = sd_bus_message_append(reply, "is", l->ifindex, d->name); + r = sd_bus_message_append(reply, "(isb)", l->ifindex, d->name, d->route_only); if (r < 0) return r; } @@ -1450,7 +1450,7 @@ static const sd_bus_vtable resolve_vtable[] = { SD_BUS_VTABLE_START(0), SD_BUS_PROPERTY("LLMNRHostname", "s", NULL, offsetof(Manager, llmnr_hostname), 0), SD_BUS_PROPERTY("DNS", "a(iiay)", bus_property_get_dns_servers, 0, 0), - SD_BUS_PROPERTY("Domains", "a(is)", bus_property_get_search_domains, 0, 0), + SD_BUS_PROPERTY("SearchDomains", "a(isb)", bus_property_get_search_domains, 0, 0), SD_BUS_PROPERTY("TransactionStatistics", "(tt)", bus_property_get_transaction_statistics, 0, 0), SD_BUS_PROPERTY("CacheStatistics", "(ttt)", bus_property_get_cache_statistics, 0, 0), SD_BUS_PROPERTY("DNSSECStatistics", "(tttt)", bus_property_get_dnssec_statistics, 0, 0), @@ -1463,7 +1463,7 @@ static const sd_bus_vtable resolve_vtable[] = { SD_BUS_METHOD("ResetStatistics", NULL, NULL, bus_method_reset_statistics, 0), SD_BUS_METHOD("GetLink", "i", "o", bus_method_get_link, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("SetLinkDNS", "ia(iay)", NULL, bus_method_set_link_dns_servers, 0), - SD_BUS_METHOD("SetLinkDomains", "ias", NULL, bus_method_set_link_search_domains, 0), + SD_BUS_METHOD("SetLinkDomains", "ia(sb)", NULL, bus_method_set_link_search_domains, 0), SD_BUS_METHOD("SetLinkLLMNR", "is", NULL, bus_method_set_link_llmnr, 0), SD_BUS_METHOD("SetLinkMulticastDNS", "is", NULL, bus_method_set_link_mdns, 0), SD_BUS_METHOD("SetLinkDNSSEC", "is", NULL, bus_method_set_link_dnssec, 0), diff --git a/src/resolve/resolved-conf.c b/src/resolve/resolved-conf.c index 88df7534c4..6d8c35164e 100644 --- a/src/resolve/resolved-conf.c +++ b/src/resolve/resolved-conf.c @@ -80,20 +80,34 @@ int manager_parse_dns_server_string_and_warn(Manager *m, DnsServerType type, con int manager_add_search_domain_by_string(Manager *m, const char *domain) { DnsSearchDomain *d; + bool route_only; int r; assert(m); assert(domain); + route_only = *domain == '~'; + if (route_only) + domain++; + + if (dns_name_is_root(domain) || streq(domain, "*")) { + route_only = true; + domain = "."; + } + r = dns_search_domain_find(m->search_domains, domain, &d); if (r < 0) return r; - if (r > 0) { + if (r > 0) dns_search_domain_move_back_and_unmark(d); - return 0; + else { + r = dns_search_domain_new(m, &d, DNS_SEARCH_DOMAIN_SYSTEM, NULL, domain); + if (r < 0) + return r; } - return dns_search_domain_new(m, NULL, DNS_SEARCH_DOMAIN_SYSTEM, NULL, domain); + d->route_only = route_only; + return 0; } int manager_parse_search_domains_and_warn(Manager *m, const char *string) { diff --git a/src/resolve/resolved-dns-dnssec.c b/src/resolve/resolved-dns-dnssec.c index 8e3c78e7bf..76c801cce8 100644 --- a/src/resolve/resolved-dns-dnssec.c +++ b/src/resolve/resolved-dns-dnssec.c @@ -28,18 +28,6 @@ #include "resolved-dns-packet.h" #include "string-table.h" -/* Open question: - * - * How does the DNSSEC canonical form of a hostname with a label - * containing a dot look like, the way DNS-SD does it? - * - * TODO: - * - * - enable by default - * - Allow clients to request DNSSEC even if DNSSEC is off - * - make sure when getting an NXDOMAIN response through CNAME, we still process the first CNAMEs in the packet - * */ - #define VERIFY_RRS_MAX 256 #define MAX_KEY_SIZE (32*1024) diff --git a/src/resolve/resolved-dns-query.c b/src/resolve/resolved-dns-query.c index ef977b0948..a00851658e 100644 --- a/src/resolve/resolved-dns-query.c +++ b/src/resolve/resolved-dns-query.c @@ -93,17 +93,20 @@ static int dns_query_candidate_next_search_domain(DnsQueryCandidate *c) { assert(c); - if (c->search_domain && c->search_domain->linked) { + if (c->search_domain && c->search_domain->linked) next = c->search_domain->domains_next; + else + next = dns_scope_get_search_domains(c->scope); + for (;;) { if (!next) /* We hit the end of the list */ return 0; - } else { - next = dns_scope_get_search_domains(c->scope); + if (!next->route_only) + break; - if (!next) /* OK, there's nothing. */ - return 0; + /* Skip over route-only domains */ + next = next->domains_next; } dns_search_domain_unref(c->search_domain); diff --git a/src/resolve/resolved-dns-search-domain.c b/src/resolve/resolved-dns-search-domain.c index f9d966abb1..356c05b9a4 100644 --- a/src/resolve/resolved-dns-search-domain.c +++ b/src/resolve/resolved-dns-search-domain.c @@ -42,9 +42,6 @@ int dns_search_domain_new( if (r < 0) return r; - if (dns_name_is_root(normalized)) - return -EINVAL; - if (l) { if (l->n_search_domains >= LINK_SEARCH_DOMAINS_MAX) return -E2BIG; diff --git a/src/resolve/resolved-dns-search-domain.h b/src/resolve/resolved-dns-search-domain.h index 2e0af31dda..c1903b334f 100644 --- a/src/resolve/resolved-dns-search-domain.h +++ b/src/resolve/resolved-dns-search-domain.h @@ -44,6 +44,7 @@ struct DnsSearchDomain { char *name; bool marked:1; + bool route_only:1; bool linked:1; LIST_FIELDS(DnsSearchDomain, domains); diff --git a/src/resolve/resolved-dns-transaction.c b/src/resolve/resolved-dns-transaction.c index 77f9ef0a83..802ad860a4 100644 --- a/src/resolve/resolved-dns-transaction.c +++ b/src/resolve/resolved-dns-transaction.c @@ -732,6 +732,55 @@ fail: dns_transaction_complete(t, DNS_TRANSACTION_ERRNO); } +static int dns_transaction_has_positive_answer(DnsTransaction *t, DnsAnswerFlags *flags) { + int r; + + assert(t); + + /* Checks whether the answer is positive, i.e. either a direct + * answer to the question, or a CNAME/DNAME for it */ + + r = dns_answer_match_key(t->answer, t->key, flags); + if (r != 0) + return r; + + r = dns_answer_find_cname_or_dname(t->answer, t->key, NULL, flags); + if (r != 0) + return r; + + return false; +} + +static int dns_transaction_fix_rcode(DnsTransaction *t) { + int r; + + assert(t); + + /* Fix up the RCODE to SUCCESS if we get at least one matching RR in a response. Note that this contradicts the + * DNS RFCs a bit. Specifically, RFC 6604 Section 3 clarifies that the RCODE shall say something about a + * CNAME/DNAME chain element coming after the last chain element contained in the message, and not the first + * one included. However, it also indicates that not all DNS servers implement this correctly. Moreover, when + * using DNSSEC we usually only can prove the first element of a CNAME/DNAME chain anyway, hence let's settle + * on always processing the RCODE as referring to the immediate look-up we do, i.e. the first element of a + * CNAME/DNAME chain. This way, we uniformly handle CNAME/DNAME chains, regardless if the DNS server + * incorrectly implements RCODE, whether DNSSEC is in use, or whether the DNS server only supplied us with an + * incomplete CNAME/DNAME chain. + * + * Or in other words: if we get at least one positive reply in a message we patch NXDOMAIN to become SUCCESS, + * and then rely on the CNAME chasing logic to figure out that there's actually a CNAME error with a new + * lookup. */ + + if (t->answer_rcode != DNS_RCODE_NXDOMAIN) + return 0; + + r = dns_transaction_has_positive_answer(t, NULL); + if (r <= 0) + return r; + + t->answer_rcode = DNS_RCODE_SUCCESS; + return 0; +} + void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) { usec_t ts; int r; @@ -923,6 +972,10 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) { t->answer_dnssec_result = _DNSSEC_RESULT_INVALID; t->answer_authenticated = false; + r = dns_transaction_fix_rcode(t); + if (r < 0) + goto fail; + /* Block GC while starting requests for additional DNSSEC RRs */ t->block_gc++; r = dns_transaction_request_dnssec_keys(t); @@ -1635,25 +1688,6 @@ static int dns_transaction_request_dnssec_rr(DnsTransaction *t, DnsResourceKey * return 1; } -static int dns_transaction_has_positive_answer(DnsTransaction *t, DnsAnswerFlags *flags) { - int r; - - assert(t); - - /* Checks whether the answer is positive, i.e. either a direct - * answer to the question, or a CNAME/DNAME for it */ - - r = dns_answer_match_key(t->answer, t->key, flags); - if (r != 0) - return r; - - r = dns_answer_find_cname_or_dname(t->answer, t->key, NULL, flags); - if (r != 0) - return r; - - return false; -} - static int dns_transaction_negative_trust_anchor_lookup(DnsTransaction *t, const char *name) { int r; diff --git a/src/resolve/resolved-link-bus.c b/src/resolve/resolved-link-bus.c index 2ca7ece851..e6b087f412 100644 --- a/src/resolve/resolved-link-bus.c +++ b/src/resolve/resolved-link-bus.c @@ -75,12 +75,12 @@ static int property_get_domains( assert(reply); assert(l); - r = sd_bus_message_open_container(reply, 'a', "s"); + r = sd_bus_message_open_container(reply, 'a', "(sb)"); if (r < 0) return r; LIST_FOREACH(domains, d, l->search_domains) { - r = sd_bus_message_append(reply, "s", d->name); + r = sd_bus_message_append(reply, "(sb)", d->name, d->route_only); if (r < 0) return r; } @@ -242,47 +242,71 @@ clear: } int bus_link_method_set_search_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_free_ char **domains = NULL; Link *l = userdata; - char **i; int r; assert(message); assert(l); - r = sd_bus_message_read_strv(message, &domains); + r = sd_bus_message_enter_container(message, 'a', "(sb)"); if (r < 0) return r; - STRV_FOREACH(i, domains) { + for (;;) { + const char *name; + int route_only; - r = dns_name_is_valid(*i); + r = sd_bus_message_read(message, "(sb)", &name, &route_only); if (r < 0) return r; if (r == 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid search domain %s", *i); - if (dns_name_is_root(*i)) + break; + + r = dns_name_is_valid(name); + if (r < 0) + return r; + if (r == 0) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid search domain %s", name); + if (!route_only && dns_name_is_root(name)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Root domain is not suitable as search domain"); } dns_search_domain_mark_all(l->search_domains); - STRV_FOREACH(i, domains) { + r = sd_bus_message_rewind(message, false); + if (r < 0) + return r; + + for (;;) { DnsSearchDomain *d; + const char *name; + int route_only; - r = dns_search_domain_find(l->search_domains, *i, &d); + r = sd_bus_message_read(message, "(sb)", &name, &route_only); + if (r < 0) + goto clear; + if (r == 0) + break; + + r = dns_search_domain_find(l->search_domains, name, &d); if (r < 0) goto clear; if (r > 0) dns_search_domain_move_back_and_unmark(d); else { - r = dns_search_domain_new(l->manager, NULL, DNS_SEARCH_DOMAIN_LINK, l, *i); + r = dns_search_domain_new(l->manager, &d, DNS_SEARCH_DOMAIN_LINK, l, name); if (r < 0) goto clear; } + + d->route_only = route_only; } + r = sd_bus_message_exit_container(message); + if (r < 0) + goto clear; + dns_search_domain_unlink_marked(l->search_domains); return sd_bus_reply_method_return(message, NULL); @@ -430,7 +454,7 @@ const sd_bus_vtable link_vtable[] = { SD_BUS_PROPERTY("ScopesMask", "t", property_get_scopes_mask, 0, 0), SD_BUS_PROPERTY("DNS", "a(iay)", property_get_dns, 0, 0), - SD_BUS_PROPERTY("Domains", "as", property_get_domains, 0, 0), + SD_BUS_PROPERTY("Domains", "a(sb)", property_get_domains, 0, 0), SD_BUS_PROPERTY("LLMNR", "s", property_get_resolve_support, offsetof(Link, llmnr_support), 0), SD_BUS_PROPERTY("MulticastDNS", "s", property_get_resolve_support, offsetof(Link, mdns_support), 0), SD_BUS_PROPERTY("DNSSEC", "s", property_get_dnssec_mode, offsetof(Link, dnssec_mode), 0), @@ -438,7 +462,7 @@ const sd_bus_vtable link_vtable[] = { SD_BUS_PROPERTY("DNSSECSupport", "b", property_get_dnssec_supported, 0, 0), SD_BUS_METHOD("SetDNS", "a(iay)", NULL, bus_link_method_set_dns_servers, 0), - SD_BUS_METHOD("SetDomains", "as", NULL, bus_link_method_set_search_domains, 0), + SD_BUS_METHOD("SetDomains", "a(sb)", NULL, bus_link_method_set_search_domains, 0), SD_BUS_METHOD("SetLLMNR", "s", NULL, bus_link_method_set_llmnr, 0), SD_BUS_METHOD("SetMulticastDNS", "s", NULL, bus_link_method_set_mdns, 0), SD_BUS_METHOD("SetDNSSEC", "s", NULL, bus_link_method_set_dnssec, 0), diff --git a/src/resolve/resolved-link.c b/src/resolve/resolved-link.c index e2f9c8b400..37dd4a6e78 100644 --- a/src/resolve/resolved-link.c +++ b/src/resolve/resolved-link.c @@ -377,38 +377,60 @@ clear: return r; } +static int link_update_search_domain_one(Link *l, const char *name, bool route_only) { + DnsSearchDomain *d; + int r; + + r = dns_search_domain_find(l->search_domains, name, &d); + if (r < 0) + return r; + if (r > 0) + dns_search_domain_move_back_and_unmark(d); + else { + r = dns_search_domain_new(l->manager, &d, DNS_SEARCH_DOMAIN_LINK, l, name); + if (r < 0) + return r; + } + + d->route_only = route_only; + return 0; +} + static int link_update_search_domains(Link *l) { - _cleanup_strv_free_ char **domains = NULL; + _cleanup_strv_free_ char **sdomains = NULL, **rdomains = NULL; char **i; - int r; + int r, q; assert(l); - r = sd_network_link_get_domains(l->ifindex, &domains); - if (r == -ENODATA) { + r = sd_network_link_get_search_domains(l->ifindex, &sdomains); + if (r < 0 && r != -ENODATA) + goto clear; + + q = sd_network_link_get_route_domains(l->ifindex, &rdomains); + if (q < 0 && q != -ENODATA) { + r = q; + goto clear; + } + + if (r == -ENODATA && q == -ENODATA) { /* networkd knows nothing about this interface, and that's fine. */ r = 0; goto clear; } - if (r < 0) - goto clear; dns_search_domain_mark_all(l->search_domains); - STRV_FOREACH(i, domains) { - DnsSearchDomain *d; - - r = dns_search_domain_find(l->search_domains, *i, &d); + STRV_FOREACH(i, sdomains) { + r = link_update_search_domain_one(l, *i, false); if (r < 0) goto clear; + } - if (r > 0) - dns_search_domain_move_back_and_unmark(d); - else { - r = dns_search_domain_new(l->manager, NULL, DNS_SEARCH_DOMAIN_LINK, l, *i); - if (r < 0) - goto clear; - } + STRV_FOREACH(i, rdomains) { + r = link_update_search_domain_one(l, *i, true); + if (r < 0) + goto clear; } dns_search_domain_unlink_marked(l->search_domains); diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c index 704f012c37..4306403834 100644 --- a/src/resolve/resolved-manager.c +++ b/src/resolve/resolved-manager.c @@ -206,7 +206,7 @@ static int manager_rtnl_listen(Manager *m) { if (r < 0) return r; - r = sd_netlink_attach_event(m->rtnl, m->event, 0); + r = sd_netlink_attach_event(m->rtnl, m->event, SD_EVENT_PRIORITY_IMPORTANT); if (r < 0) return r; @@ -314,6 +314,10 @@ static int manager_network_monitor_listen(Manager *m) { if (r < 0) return r; + r = sd_event_source_set_priority(m->network_event_source, SD_EVENT_PRIORITY_IMPORTANT+5); + if (r < 0) + return r; + (void) sd_event_source_set_description(m->network_event_source, "network-monitor"); return 0; diff --git a/src/resolve/resolved-manager.h b/src/resolve/resolved-manager.h index a4291d57ff..1af49c8fb9 100644 --- a/src/resolve/resolved-manager.h +++ b/src/resolve/resolved-manager.h @@ -74,6 +74,7 @@ struct Manager { LIST_HEAD(DnsSearchDomain, search_domains); unsigned n_search_domains; + bool permit_domain_search; bool need_builtin_fallbacks:1; diff --git a/src/shared/dns-domain.c b/src/shared/dns-domain.c index 3ad409fc29..7ef4ad3cf8 100644 --- a/src/shared/dns-domain.c +++ b/src/shared/dns-domain.c @@ -405,11 +405,17 @@ int dns_label_undo_idna(const char *encoded, size_t encoded_size, char *decoded, int dns_name_concat(const char *a, const char *b, char **_ret) { _cleanup_free_ char *ret = NULL; size_t n = 0, allocated = 0; - const char *p = a; + const char *p; bool first = true; int r; - assert(a); + if (a) + p = a; + else if (b) { + p = b; + b = NULL; + } else + goto finish; for (;;) { char label[DNS_LABEL_MAX]; @@ -457,12 +463,21 @@ int dns_name_concat(const char *a, const char *b, char **_ret) { n += r; } +finish: if (n > DNS_HOSTNAME_MAX) return -EINVAL; if (_ret) { - if (!GREEDY_REALLOC(ret, allocated, n + 1)) - return -ENOMEM; + if (n == 0) { + /* Nothing appended? If so, generate at least a single dot, to indicate the DNS root domain */ + if (!GREEDY_REALLOC(ret, allocated, 2)) + return -ENOMEM; + + ret[n++] = '.'; + } else { + if (!GREEDY_REALLOC(ret, allocated, n + 1)) + return -ENOMEM; + } ret[n] = 0; *_ret = ret; diff --git a/src/systemd/sd-network.h b/src/systemd/sd-network.h index 653c61a162..ff0d2b191e 100644 --- a/src/systemd/sd-network.h +++ b/src/systemd/sd-network.h @@ -64,8 +64,11 @@ int sd_network_get_dns(char ***dns); * representations of IP addresses */ int sd_network_get_ntp(char ***ntp); -/* Get the search/routing domains for all links. */ -int sd_network_get_domains(char ***domains); +/* Get the search domains for all links. */ +int sd_network_get_search_domains(char ***domains); + +/* Get the search domains for all links. */ +int sd_network_get_route_domains(char ***domains); /* Get setup state from ifindex. * Possible states: @@ -134,8 +137,11 @@ int sd_network_link_get_dnssec_negative_trust_anchors(int ifindex, char ***nta); int sd_network_link_get_lldp(int ifindex, char **lldp); -/* Get the DNS domain names for a given link. */ -int sd_network_link_get_domains(int ifindex, char ***domains); +/* Get the search DNS domain names for a given link. */ +int sd_network_link_get_search_domains(int ifindex, char ***domains); + +/* Get the route DNS domain names for a given link. */ +int sd_network_link_get_route_domains(int ifindex, char ***domains); /* Get the CARRIERS to which current link is bound to. */ int sd_network_link_get_carrier_bound_to(int ifindex, char ***carriers); @@ -146,10 +152,6 @@ int sd_network_link_get_carrier_bound_by(int ifindex, char ***carriers); /* Get the timezone that was learnt on a specific link. */ int sd_network_link_get_timezone(int ifindex, char **timezone); -/* Returns whether or not domains that don't match any link should be resolved - * on this link. 1 for yes, 0 for no and negative value for error */ -int sd_network_link_get_wildcard_domain(int ifindex); - /* Monitor object */ typedef struct sd_network_monitor sd_network_monitor; diff --git a/src/test/test-dns-domain.c b/src/test/test-dns-domain.c index 3b260ee75d..3efc61ad0a 100644 --- a/src/test/test-dns-domain.c +++ b/src/test/test-dns-domain.c @@ -186,7 +186,7 @@ static void test_dns_name_normalize_one(const char *what, const char *expect, in } static void test_dns_name_normalize(void) { - test_dns_name_normalize_one("", "", 0); + test_dns_name_normalize_one("", ".", 0); test_dns_name_normalize_one("f", "f", 0); test_dns_name_normalize_one("f.waldi", "f.waldi", 0); test_dns_name_normalize_one("f \\032.waldi", "f\\032\\032.waldi", 0); @@ -194,7 +194,7 @@ static void test_dns_name_normalize(void) { test_dns_name_normalize_one("..", NULL, -EINVAL); test_dns_name_normalize_one(".foobar", NULL, -EINVAL); test_dns_name_normalize_one("foobar.", "foobar", 0); - test_dns_name_normalize_one(".", "", 0); + test_dns_name_normalize_one(".", ".", 0); } static void test_dns_name_equal_one(const char *a, const char *b, int ret) { @@ -340,10 +340,18 @@ static void test_dns_name_concat_one(const char *a, const char *b, int r, const } static void test_dns_name_concat(void) { + test_dns_name_concat_one("", "", 0, "."); + test_dns_name_concat_one(".", "", 0, "."); + test_dns_name_concat_one("", ".", 0, "."); + test_dns_name_concat_one(".", ".", 0, "."); test_dns_name_concat_one("foo", "bar", 0, "foo.bar"); test_dns_name_concat_one("foo.foo", "bar.bar", 0, "foo.foo.bar.bar"); test_dns_name_concat_one("foo", NULL, 0, "foo"); + test_dns_name_concat_one("foo", ".", 0, "foo"); test_dns_name_concat_one("foo.", "bar.", 0, "foo.bar"); + test_dns_name_concat_one(NULL, NULL, 0, "."); + test_dns_name_concat_one(NULL, ".", 0, "."); + test_dns_name_concat_one(NULL, "foo", 0, "foo"); } static void test_dns_name_is_valid_one(const char *s, int ret) { @@ -429,7 +437,7 @@ static void test_dns_service_join_one(const char *a, const char *b, const char * assert_se(dns_service_split(t, &x, &y, &z) >= 0); assert_se(streq_ptr(a, x)); assert_se(streq_ptr(b, y)); - assert_se(streq_ptr(c, z)); + assert_se(dns_name_equal(c, z) > 0); } static void test_dns_service_join(void) { @@ -460,18 +468,18 @@ static void test_dns_service_split_one(const char *joined, const char *a, const if (y) { assert_se(dns_service_join(x, y, z, &t) == 0); - assert_se(streq_ptr(joined, t)); + assert_se(dns_name_equal(joined, t) > 0); } else - assert_se(!x && streq_ptr(z, joined)); + assert_se(!x && dns_name_equal(z, joined) > 0); } static void test_dns_service_split(void) { - test_dns_service_split_one("", NULL, NULL, "", 0); + test_dns_service_split_one("", NULL, NULL, ".", 0); test_dns_service_split_one("foo", NULL, NULL, "foo", 0); test_dns_service_split_one("foo.bar", NULL, NULL, "foo.bar", 0); test_dns_service_split_one("_foo.bar", NULL, NULL, "_foo.bar", 0); - test_dns_service_split_one("_foo._bar", NULL, "_foo._bar", "", 0); - test_dns_service_split_one("_meh._foo._bar", "_meh", "_foo._bar", "", 0); + test_dns_service_split_one("_foo._bar", NULL, "_foo._bar", ".", 0); + test_dns_service_split_one("_meh._foo._bar", "_meh", "_foo._bar", ".", 0); test_dns_service_split_one("Wuff\\032Wuff._foo._bar.waldo.com", "Wuff Wuff", "_foo._bar", "waldo.com", 0); } @@ -490,7 +498,7 @@ static void test_dns_name_change_suffix(void) { test_dns_name_change_suffix_one("foo.bar.waldi.quux", "quux", "piff.paff", 1, "foo.bar.waldi.piff.paff"); test_dns_name_change_suffix_one("foo.bar.waldi.quux", "", "piff.paff", 1, "foo.bar.waldi.quux.piff.paff"); test_dns_name_change_suffix_one("", "", "piff.paff", 1, "piff.paff"); - test_dns_name_change_suffix_one("", "", "", 1, ""); + test_dns_name_change_suffix_one("", "", "", 1, "."); test_dns_name_change_suffix_one("a", "b", "c", 0, NULL); } |