1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 Tom Gundersen <teg@jklm.no>
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <netinet/in.h>
24 #include <sys/ioctl.h>
27 #include "alloc-util.h"
28 #include "dns-domain.h"
30 #include "fileio-label.h"
31 #include "hostname-util.h"
33 #include "netlink-util.h"
34 #include "network-internal.h"
35 #include "ordered-set.h"
36 #include "parse-util.h"
37 #include "random-util.h"
38 #include "resolved-bus.h"
39 #include "resolved-conf.h"
40 #include "resolved-llmnr.h"
41 #include "resolved-manager.h"
42 #include "resolved-resolv-conf.h"
43 #include "socket-util.h"
44 #include "string-table.h"
45 #include "string-util.h"
48 #define SEND_TIMEOUT_USEC (200 * USEC_PER_MSEC)
50 static int manager_process_link(sd_netlink
*rtnl
, sd_netlink_message
*mm
, void *userdata
) {
51 Manager
*m
= userdata
;
60 r
= sd_netlink_message_get_type(mm
, &type
);
64 r
= sd_rtnl_message_link_get_ifindex(mm
, &ifindex
);
68 l
= hashmap_get(m
->links
, INT_TO_PTR(ifindex
));
76 r
= link_new(m
, &l
, ifindex
);
81 r
= link_update_rtnl(l
, mm
);
85 r
= link_update_monitor(l
);
90 log_debug("Found new link %i/%s", ifindex
, l
->name
);
97 log_debug("Removing link %i/%s", l
->ifindex
, l
->name
);
107 log_warning_errno(r
, "Failed to process RTNL link message: %m");
111 static int manager_process_address(sd_netlink
*rtnl
, sd_netlink_message
*mm
, void *userdata
) {
112 Manager
*m
= userdata
;
113 union in_addr_union address
;
115 int r
, ifindex
, family
;
123 r
= sd_netlink_message_get_type(mm
, &type
);
127 r
= sd_rtnl_message_addr_get_ifindex(mm
, &ifindex
);
131 l
= hashmap_get(m
->links
, INT_TO_PTR(ifindex
));
135 r
= sd_rtnl_message_addr_get_family(mm
, &family
);
142 r
= sd_netlink_message_read_in_addr(mm
, IFA_LOCAL
, &address
.in
);
144 r
= sd_netlink_message_read_in_addr(mm
, IFA_ADDRESS
, &address
.in
);
152 r
= sd_netlink_message_read_in6_addr(mm
, IFA_LOCAL
, &address
.in6
);
154 r
= sd_netlink_message_read_in6_addr(mm
, IFA_ADDRESS
, &address
.in6
);
165 a
= link_find_address(l
, family
, &address
);
172 r
= link_address_new(l
, &a
, family
, &address
);
177 r
= link_address_update_rtnl(a
, mm
);
184 link_address_free(a
);
191 log_warning_errno(r
, "Failed to process RTNL address message: %m");
195 static int manager_rtnl_listen(Manager
*m
) {
196 _cleanup_netlink_message_unref_ sd_netlink_message
*req
= NULL
, *reply
= NULL
;
197 sd_netlink_message
*i
;
202 /* First, subscribe to interfaces coming and going */
203 r
= sd_netlink_open(&m
->rtnl
);
207 r
= sd_netlink_attach_event(m
->rtnl
, m
->event
, 0);
211 r
= sd_netlink_add_match(m
->rtnl
, RTM_NEWLINK
, manager_process_link
, m
);
215 r
= sd_netlink_add_match(m
->rtnl
, RTM_DELLINK
, manager_process_link
, m
);
219 r
= sd_netlink_add_match(m
->rtnl
, RTM_NEWADDR
, manager_process_address
, m
);
223 r
= sd_netlink_add_match(m
->rtnl
, RTM_DELADDR
, manager_process_address
, m
);
227 /* Then, enumerate all links */
228 r
= sd_rtnl_message_new_link(m
->rtnl
, &req
, RTM_GETLINK
, 0);
232 r
= sd_netlink_message_request_dump(req
, true);
236 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
240 for (i
= reply
; i
; i
= sd_netlink_message_next(i
)) {
241 r
= manager_process_link(m
->rtnl
, i
, m
);
246 req
= sd_netlink_message_unref(req
);
247 reply
= sd_netlink_message_unref(reply
);
249 /* Finally, enumerate all addresses, too */
250 r
= sd_rtnl_message_new_addr(m
->rtnl
, &req
, RTM_GETADDR
, 0, AF_UNSPEC
);
254 r
= sd_netlink_message_request_dump(req
, true);
258 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
262 for (i
= reply
; i
; i
= sd_netlink_message_next(i
)) {
263 r
= manager_process_address(m
->rtnl
, i
, m
);
271 static int on_network_event(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
272 Manager
*m
= userdata
;
279 sd_network_monitor_flush(m
->network_monitor
);
281 HASHMAP_FOREACH(l
, m
->links
, i
) {
282 r
= link_update_monitor(l
);
284 log_warning_errno(r
, "Failed to update monitor information for %i: %m", l
->ifindex
);
287 r
= manager_write_resolv_conf(m
);
289 log_warning_errno(r
, "Could not update resolv.conf: %m");
294 static int manager_network_monitor_listen(Manager
*m
) {
299 r
= sd_network_monitor_new(&m
->network_monitor
, NULL
);
303 fd
= sd_network_monitor_get_fd(m
->network_monitor
);
307 events
= sd_network_monitor_get_events(m
->network_monitor
);
311 r
= sd_event_add_io(m
->event
, &m
->network_event_source
, fd
, events
, &on_network_event
, m
);
318 static int determine_hostname(char **llmnr_hostname
, char **mdns_hostname
) {
319 _cleanup_free_
char *h
= NULL
, *n
= NULL
;
320 char label
[DNS_LABEL_MAX
];
324 assert(llmnr_hostname
);
325 assert(mdns_hostname
);
327 /* Extract and normalize the first label of the locally
328 * configured hostname, and check it's not "localhost". */
330 h
= gethostname_malloc();
335 r
= dns_label_unescape(&p
, label
, sizeof(label
));
337 return log_error_errno(r
, "Failed to unescape host name: %m");
339 log_error("Couldn't find a single label in hosntame.");
343 k
= dns_label_undo_idna(label
, r
, label
, sizeof(label
));
345 return log_error_errno(k
, "Failed to undo IDNA: %m");
349 if (!utf8_is_valid(label
)) {
350 log_error("System hostname is not UTF-8 clean.");
354 r
= dns_label_escape(label
, r
, &n
);
356 return log_error_errno(r
, "Failed to escape host name: %m");
358 if (is_localhost(n
)) {
359 log_debug("System hostname is 'localhost', ignoring.");
363 r
= dns_name_concat(n
, "local", mdns_hostname
);
365 return log_error_errno(r
, "Failed to determine mDNS hostname: %m");
373 static int on_hostname_change(sd_event_source
*es
, int fd
, uint32_t revents
, void *userdata
) {
374 _cleanup_free_
char *llmnr_hostname
= NULL
, *mdns_hostname
= NULL
;
375 Manager
*m
= userdata
;
380 r
= determine_hostname(&llmnr_hostname
, &mdns_hostname
);
382 return 0; /* ignore invalid hostnames */
384 if (streq(llmnr_hostname
, m
->llmnr_hostname
) && streq(mdns_hostname
, m
->mdns_hostname
))
387 log_info("System hostname changed to '%s'.", llmnr_hostname
);
389 free(m
->llmnr_hostname
);
390 free(m
->mdns_hostname
);
392 m
->llmnr_hostname
= llmnr_hostname
;
393 m
->mdns_hostname
= mdns_hostname
;
395 llmnr_hostname
= mdns_hostname
= NULL
;
397 manager_refresh_rrs(m
);
402 static int manager_watch_hostname(Manager
*m
) {
407 m
->hostname_fd
= open("/proc/sys/kernel/hostname", O_RDONLY
|O_CLOEXEC
|O_NDELAY
|O_NOCTTY
);
408 if (m
->hostname_fd
< 0) {
409 log_warning_errno(errno
, "Failed to watch hostname: %m");
413 r
= sd_event_add_io(m
->event
, &m
->hostname_event_source
, m
->hostname_fd
, 0, on_hostname_change
, m
);
416 /* kernels prior to 3.2 don't support polling this file. Ignore the failure. */
417 m
->hostname_fd
= safe_close(m
->hostname_fd
);
419 return log_error_errno(r
, "Failed to add hostname event source: %m");
422 r
= determine_hostname(&m
->llmnr_hostname
, &m
->mdns_hostname
);
424 log_info("Defaulting to hostname 'linux'.");
425 m
->llmnr_hostname
= strdup("linux");
426 if (!m
->llmnr_hostname
)
429 m
->mdns_hostname
= strdup("linux.local");
430 if (!m
->mdns_hostname
)
433 log_info("Using system hostname '%s'.", m
->llmnr_hostname
);
438 static int manager_sigusr1(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
439 _cleanup_free_
char *buffer
= NULL
;
440 _cleanup_fclose_
FILE *f
= NULL
;
441 Manager
*m
= userdata
;
449 f
= open_memstream(&buffer
, &size
);
453 LIST_FOREACH(scopes
, scope
, m
->dns_scopes
)
454 dns_scope_dump(scope
, f
);
456 if (fflush_and_check(f
) < 0)
459 log_dump(LOG_INFO
, buffer
);
463 int manager_new(Manager
**ret
) {
464 _cleanup_(manager_freep
) Manager
*m
= NULL
;
469 m
= new0(Manager
, 1);
473 m
->llmnr_ipv4_udp_fd
= m
->llmnr_ipv6_udp_fd
= -1;
474 m
->llmnr_ipv4_tcp_fd
= m
->llmnr_ipv6_tcp_fd
= -1;
477 m
->llmnr_support
= SUPPORT_YES
;
478 m
->read_resolv_conf
= true;
479 m
->need_builtin_fallbacks
= true;
481 r
= sd_event_default(&m
->event
);
485 sd_event_add_signal(m
->event
, NULL
, SIGTERM
, NULL
, NULL
);
486 sd_event_add_signal(m
->event
, NULL
, SIGINT
, NULL
, NULL
);
488 sd_event_set_watchdog(m
->event
, true);
490 r
= manager_watch_hostname(m
);
494 r
= dns_scope_new(m
, &m
->unicast_scope
, NULL
, DNS_PROTOCOL_DNS
, AF_UNSPEC
);
498 r
= manager_network_monitor_listen(m
);
502 r
= manager_rtnl_listen(m
);
506 r
= manager_connect_bus(m
);
510 (void) sd_event_add_signal(m
->event
, &m
->sigusr1_event_source
, SIGUSR1
, manager_sigusr1
, m
);
518 int manager_start(Manager
*m
) {
523 r
= manager_llmnr_start(m
);
530 Manager
*manager_free(Manager
*m
) {
536 manager_flush_dns_servers(m
, DNS_SERVER_SYSTEM
);
537 manager_flush_dns_servers(m
, DNS_SERVER_FALLBACK
);
539 while ((l
= hashmap_first(m
->links
)))
542 while (m
->dns_queries
)
543 dns_query_free(m
->dns_queries
);
545 dns_scope_free(m
->unicast_scope
);
547 hashmap_free(m
->links
);
548 hashmap_free(m
->dns_transactions
);
550 sd_event_source_unref(m
->network_event_source
);
551 sd_network_monitor_unref(m
->network_monitor
);
553 sd_netlink_unref(m
->rtnl
);
554 sd_event_source_unref(m
->rtnl_event_source
);
556 manager_llmnr_stop(m
);
558 sd_bus_slot_unref(m
->prepare_for_sleep_slot
);
559 sd_event_source_unref(m
->bus_retry_event_source
);
560 sd_bus_unref(m
->bus
);
562 sd_event_source_unref(m
->sigusr1_event_source
);
564 sd_event_unref(m
->event
);
566 dns_resource_key_unref(m
->llmnr_host_ipv4_key
);
567 dns_resource_key_unref(m
->llmnr_host_ipv6_key
);
569 sd_event_source_unref(m
->hostname_event_source
);
570 safe_close(m
->hostname_fd
);
571 free(m
->llmnr_hostname
);
572 free(m
->mdns_hostname
);
579 int manager_recv(Manager
*m
, int fd
, DnsProtocol protocol
, DnsPacket
**ret
) {
580 _cleanup_(dns_packet_unrefp
) DnsPacket
*p
= NULL
;
582 struct cmsghdr header
; /* For alignment */
583 uint8_t buffer
[CMSG_SPACE(MAXSIZE(struct in_pktinfo
, struct in6_pktinfo
))
584 + CMSG_SPACE(int) /* ttl/hoplimit */
585 + EXTRA_CMSG_SPACE
/* kernel appears to require extra buffer space */];
587 union sockaddr_union sa
;
588 struct msghdr mh
= {};
589 struct cmsghdr
*cmsg
;
598 r
= ioctl(fd
, FIONREAD
, &ms
);
604 r
= dns_packet_new(&p
, protocol
, ms
);
608 iov
.iov_base
= DNS_PACKET_DATA(p
);
609 iov
.iov_len
= p
->allocated
;
611 mh
.msg_name
= &sa
.sa
;
612 mh
.msg_namelen
= sizeof(sa
);
615 mh
.msg_control
= &control
;
616 mh
.msg_controllen
= sizeof(control
);
618 l
= recvmsg(fd
, &mh
, 0);
620 if (errno
== EAGAIN
|| errno
== EINTR
)
629 assert(!(mh
.msg_flags
& MSG_CTRUNC
));
630 assert(!(mh
.msg_flags
& MSG_TRUNC
));
632 p
->size
= (size_t) l
;
634 p
->family
= sa
.sa
.sa_family
;
635 p
->ipproto
= IPPROTO_UDP
;
636 if (p
->family
== AF_INET
) {
637 p
->sender
.in
= sa
.in
.sin_addr
;
638 p
->sender_port
= be16toh(sa
.in
.sin_port
);
639 } else if (p
->family
== AF_INET6
) {
640 p
->sender
.in6
= sa
.in6
.sin6_addr
;
641 p
->sender_port
= be16toh(sa
.in6
.sin6_port
);
642 p
->ifindex
= sa
.in6
.sin6_scope_id
;
644 return -EAFNOSUPPORT
;
646 CMSG_FOREACH(cmsg
, &mh
) {
648 if (cmsg
->cmsg_level
== IPPROTO_IPV6
) {
649 assert(p
->family
== AF_INET6
);
651 switch (cmsg
->cmsg_type
) {
654 struct in6_pktinfo
*i
= (struct in6_pktinfo
*) CMSG_DATA(cmsg
);
657 p
->ifindex
= i
->ipi6_ifindex
;
659 p
->destination
.in6
= i
->ipi6_addr
;
664 p
->ttl
= *(int *) CMSG_DATA(cmsg
);
668 } else if (cmsg
->cmsg_level
== IPPROTO_IP
) {
669 assert(p
->family
== AF_INET
);
671 switch (cmsg
->cmsg_type
) {
674 struct in_pktinfo
*i
= (struct in_pktinfo
*) CMSG_DATA(cmsg
);
677 p
->ifindex
= i
->ipi_ifindex
;
679 p
->destination
.in
= i
->ipi_addr
;
684 p
->ttl
= *(int *) CMSG_DATA(cmsg
);
690 /* The Linux kernel sets the interface index to the loopback
691 * device if the packet came from the local host since it
692 * avoids the routing table in such a case. Let's unset the
693 * interface index in such a case. */
694 if (p
->ifindex
== LOOPBACK_IFINDEX
)
697 if (protocol
!= DNS_PROTOCOL_DNS
) {
698 /* If we don't know the interface index still, we look for the
699 * first local interface with a matching address. Yuck! */
701 p
->ifindex
= manager_find_ifindex(m
, p
->family
, &p
->destination
);
710 static int sendmsg_loop(int fd
, struct msghdr
*mh
, int flags
) {
717 if (sendmsg(fd
, mh
, flags
) >= 0)
726 r
= fd_wait_for_event(fd
, POLLOUT
, SEND_TIMEOUT_USEC
);
734 static int write_loop(int fd
, void *message
, size_t length
) {
741 if (write(fd
, message
, length
) >= 0)
750 r
= fd_wait_for_event(fd
, POLLOUT
, SEND_TIMEOUT_USEC
);
758 int manager_write(Manager
*m
, int fd
, DnsPacket
*p
) {
761 log_debug("Sending %s packet with id %u", DNS_PACKET_QR(p
) ? "response" : "query", DNS_PACKET_ID(p
));
763 r
= write_loop(fd
, DNS_PACKET_DATA(p
), p
->size
);
770 static int manager_ipv4_send(Manager
*m
, int fd
, int ifindex
, const struct in_addr
*addr
, uint16_t port
, DnsPacket
*p
) {
771 union sockaddr_union sa
= {
772 .in
.sin_family
= AF_INET
,
775 struct cmsghdr header
; /* For alignment */
776 uint8_t buffer
[CMSG_SPACE(sizeof(struct in_pktinfo
))];
778 struct msghdr mh
= {};
787 iov
.iov_base
= DNS_PACKET_DATA(p
);
788 iov
.iov_len
= p
->size
;
790 sa
.in
.sin_addr
= *addr
;
791 sa
.in
.sin_port
= htobe16(port
),
795 mh
.msg_name
= &sa
.sa
;
796 mh
.msg_namelen
= sizeof(sa
.in
);
799 struct cmsghdr
*cmsg
;
800 struct in_pktinfo
*pi
;
804 mh
.msg_control
= &control
;
805 mh
.msg_controllen
= CMSG_LEN(sizeof(struct in_pktinfo
));
807 cmsg
= CMSG_FIRSTHDR(&mh
);
808 cmsg
->cmsg_len
= mh
.msg_controllen
;
809 cmsg
->cmsg_level
= IPPROTO_IP
;
810 cmsg
->cmsg_type
= IP_PKTINFO
;
812 pi
= (struct in_pktinfo
*) CMSG_DATA(cmsg
);
813 pi
->ipi_ifindex
= ifindex
;
816 return sendmsg_loop(fd
, &mh
, 0);
819 static int manager_ipv6_send(Manager
*m
, int fd
, int ifindex
, const struct in6_addr
*addr
, uint16_t port
, DnsPacket
*p
) {
820 union sockaddr_union sa
= {
821 .in6
.sin6_family
= AF_INET6
,
824 struct cmsghdr header
; /* For alignment */
825 uint8_t buffer
[CMSG_SPACE(sizeof(struct in6_pktinfo
))];
827 struct msghdr mh
= {};
836 iov
.iov_base
= DNS_PACKET_DATA(p
);
837 iov
.iov_len
= p
->size
;
839 sa
.in6
.sin6_addr
= *addr
;
840 sa
.in6
.sin6_port
= htobe16(port
),
841 sa
.in6
.sin6_scope_id
= ifindex
;
845 mh
.msg_name
= &sa
.sa
;
846 mh
.msg_namelen
= sizeof(sa
.in6
);
849 struct cmsghdr
*cmsg
;
850 struct in6_pktinfo
*pi
;
854 mh
.msg_control
= &control
;
855 mh
.msg_controllen
= CMSG_LEN(sizeof(struct in6_pktinfo
));
857 cmsg
= CMSG_FIRSTHDR(&mh
);
858 cmsg
->cmsg_len
= mh
.msg_controllen
;
859 cmsg
->cmsg_level
= IPPROTO_IPV6
;
860 cmsg
->cmsg_type
= IPV6_PKTINFO
;
862 pi
= (struct in6_pktinfo
*) CMSG_DATA(cmsg
);
863 pi
->ipi6_ifindex
= ifindex
;
866 return sendmsg_loop(fd
, &mh
, 0);
869 int manager_send(Manager
*m
, int fd
, int ifindex
, int family
, const union in_addr_union
*addr
, uint16_t port
, DnsPacket
*p
) {
876 log_debug("Sending %s packet with id %u on interface %i/%s", DNS_PACKET_QR(p
) ? "response" : "query", DNS_PACKET_ID(p
), ifindex
, af_to_name(family
));
878 if (family
== AF_INET
)
879 return manager_ipv4_send(m
, fd
, ifindex
, &addr
->in
, port
, p
);
880 else if (family
== AF_INET6
)
881 return manager_ipv6_send(m
, fd
, ifindex
, &addr
->in6
, port
, p
);
883 return -EAFNOSUPPORT
;
886 uint32_t manager_find_mtu(Manager
*m
) {
891 /* If we don't know on which link a DNS packet would be
892 * delivered, let's find the largest MTU that works on all
893 * interfaces we know of */
895 HASHMAP_FOREACH(l
, m
->links
, i
) {
899 if (mtu
<= 0 || l
->mtu
< mtu
)
906 int manager_find_ifindex(Manager
*m
, int family
, const union in_addr_union
*in_addr
) {
911 a
= manager_find_link_address(m
, family
, in_addr
);
913 return a
->link
->ifindex
;
918 void manager_refresh_rrs(Manager
*m
) {
924 m
->llmnr_host_ipv4_key
= dns_resource_key_unref(m
->llmnr_host_ipv4_key
);
925 m
->llmnr_host_ipv6_key
= dns_resource_key_unref(m
->llmnr_host_ipv6_key
);
927 HASHMAP_FOREACH(l
, m
->links
, i
) {
928 link_add_rrs(l
, true);
929 link_add_rrs(l
, false);
933 int manager_next_hostname(Manager
*m
) {
941 p
= strchr(m
->llmnr_hostname
, 0);
944 while (p
> m
->llmnr_hostname
) {
945 if (!strchr("0123456789", p
[-1]))
951 if (*p
== 0 || safe_atou64(p
, &u
) < 0 || u
<= 0)
954 /* Add a random number to the old value. This way we can avoid
955 * that two hosts pick the same hostname, win on IPv4 and lose
956 * on IPv6 (or vice versa), and pick the same hostname
957 * replacement hostname, ad infinitum. We still want the
958 * numbers to go up monotonically, hence we just add a random
961 random_bytes(&a
, sizeof(a
));
964 if (asprintf(&h
, "%.*s%" PRIu64
, (int) (p
- m
->llmnr_hostname
), m
->llmnr_hostname
, u
) < 0)
967 r
= dns_name_concat(h
, "local", &k
);
973 log_info("Hostname conflict, changing published hostname from '%s' to '%s'.", m
->llmnr_hostname
, h
);
975 free(m
->llmnr_hostname
);
976 m
->llmnr_hostname
= h
;
978 free(m
->mdns_hostname
);
979 m
->mdns_hostname
= k
;
981 manager_refresh_rrs(m
);
986 LinkAddress
* manager_find_link_address(Manager
*m
, int family
, const union in_addr_union
*in_addr
) {
992 HASHMAP_FOREACH(l
, m
->links
, i
) {
995 a
= link_find_address(l
, family
, in_addr
);
1003 bool manager_our_packet(Manager
*m
, DnsPacket
*p
) {
1007 return !!manager_find_link_address(m
, p
->family
, &p
->sender
);
1010 DnsScope
* manager_find_scope(Manager
*m
, DnsPacket
*p
) {
1016 l
= hashmap_get(m
->links
, INT_TO_PTR(p
->ifindex
));
1020 if (p
->protocol
== DNS_PROTOCOL_LLMNR
) {
1021 if (p
->family
== AF_INET
)
1022 return l
->llmnr_ipv4_scope
;
1023 else if (p
->family
== AF_INET6
)
1024 return l
->llmnr_ipv6_scope
;
1030 void manager_verify_all(Manager
*m
) {
1035 LIST_FOREACH(scopes
, s
, m
->dns_scopes
)
1036 dns_zone_verify_all(&s
->zone
);
1039 int manager_is_own_hostname(Manager
*m
, const char *name
) {
1045 if (m
->llmnr_hostname
) {
1046 r
= dns_name_equal(name
, m
->llmnr_hostname
);
1051 if (m
->mdns_hostname
)
1052 return dns_name_equal(name
, m
->mdns_hostname
);
1057 static const char* const support_table
[_SUPPORT_MAX
] = {
1058 [SUPPORT_NO
] = "no",
1059 [SUPPORT_YES
] = "yes",
1060 [SUPPORT_RESOLVE
] = "resolve",
1062 DEFINE_STRING_TABLE_LOOKUP(support
, Support
);