4 This file is part of avahi.
6 avahi is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 avahi is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
14 Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with avahi; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include <sys/socket.h>
27 #include <arpa/inet.h>
29 #include <sys/utsname.h>
36 #include "subscribe.h"
38 static void free_entry(AvahiServer*s, AvahiEntry *e) {
44 avahi_goodbye_entry(s, e, TRUE);
46 /* Remove from linked list */
47 AVAHI_LLIST_REMOVE(AvahiEntry, entries, s->entries, e);
49 /* Remove from hash table indexed by name */
50 t = g_hash_table_lookup(s->entries_by_key, e->record->key);
51 AVAHI_LLIST_REMOVE(AvahiEntry, by_key, t, e);
53 g_hash_table_replace(s->entries_by_key, t->record->key, t);
55 g_hash_table_remove(s->entries_by_key, e->record->key);
57 /* Remove from associated group */
59 AVAHI_LLIST_REMOVE(AvahiEntry, by_group, e->group->entries, e);
61 avahi_record_unref(e->record);
65 static void free_group(AvahiServer *s, AvahiEntryGroup *g) {
70 free_entry(s, g->entries);
72 AVAHI_LLIST_REMOVE(AvahiEntryGroup, groups, s->groups, g);
76 static void cleanup_dead(AvahiServer *s) {
77 AvahiEntryGroup *g, *ng;
82 if (s->need_group_cleanup) {
83 for (g = s->groups; g; g = ng) {
90 s->need_group_cleanup = FALSE;
93 if (s->need_entry_cleanup) {
94 for (e = s->entries; e; e = ne) {
101 s->need_entry_cleanup = FALSE;
105 static void post_response(AvahiServer *s, AvahiInterface *i, AvahiEntry *e, gboolean unicast_response);
107 static void add_aux_records(AvahiServer *s, AvahiInterface *i, const gchar *name, guint16 type, gboolean unicast_response) {
115 k = avahi_key_new(name, AVAHI_DNS_CLASS_IN, type);
117 for (e = g_hash_table_lookup(s->entries_by_key, k); e; e = e->by_key_next)
118 if (!e->dead && avahi_entry_registered(s, e, i))
119 post_response(s, i, e, unicast_response);
124 static void post_response(AvahiServer *s, AvahiInterface *i, AvahiEntry *e, gboolean unicast_response) {
129 /* Append a record to a packet and all the records referred by it */
131 avahi_record_list_push(s->record_list, e->record, e->flags & AVAHI_ENTRY_UNIQUE, unicast_response);
133 if (e->record->key->class == AVAHI_DNS_CLASS_IN) {
134 if (e->record->key->type == AVAHI_DNS_TYPE_PTR) {
135 add_aux_records(s, i, e->record->data.ptr.name, AVAHI_DNS_TYPE_SRV, unicast_response);
136 add_aux_records(s, i, e->record->data.ptr.name, AVAHI_DNS_TYPE_TXT, unicast_response);
137 } else if (e->record->key->type == AVAHI_DNS_TYPE_SRV) {
138 add_aux_records(s, i, e->record->data.srv.name, AVAHI_DNS_TYPE_A, unicast_response);
139 add_aux_records(s, i, e->record->data.srv.name, AVAHI_DNS_TYPE_AAAA, unicast_response);
143 static void handle_query_key(AvahiServer *s, AvahiInterface *i, AvahiKey *k, gboolean unicast_response) {
151 g_message("Handling query: %s", txt = avahi_key_to_string(k));
154 avahi_packet_scheduler_incoming_query(i->scheduler, k);
156 if (k->type == AVAHI_DNS_TYPE_ANY) {
158 /* Handle ANY query */
160 for (e = s->entries; e; e = e->entries_next)
161 if (!e->dead && avahi_key_pattern_match(k, e->record->key) && avahi_entry_registered(s, e, i))
162 post_response(s, i, e, unicast_response);
166 /* Handle all other queries */
168 for (e = g_hash_table_lookup(s->entries_by_key, k); e; e = e->by_key_next)
169 if (!e->dead && avahi_entry_registered(s, e, i))
170 post_response(s, i, e, unicast_response);
174 static void withdraw_entry(AvahiServer *s, AvahiEntry *e) {
182 for (k = e->group->entries; k; k = k->by_group_next) {
183 avahi_goodbye_entry(s, k, FALSE);
187 avahi_entry_group_change_state(e->group, AVAHI_ENTRY_GROUP_COLLISION);
189 avahi_goodbye_entry(s, e, FALSE);
193 s->need_entry_cleanup = TRUE;
196 static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i) {
204 t = avahi_record_to_string(record);
206 /* g_message("PROBE: [%s]", t); */
208 for (e = g_hash_table_lookup(s->entries_by_key, record->key); e; e = n) {
211 if (e->dead || avahi_record_equal_no_ttl(record, e->record))
214 if (avahi_entry_registering(s, e, i)) {
217 if ((cmp = avahi_record_lexicographical_compare(record, e->record)) > 0) {
218 withdraw_entry(s, e);
219 g_message("Recieved conflicting probe [%s]. Local host lost. Withdrawing.", t);
221 g_message("Recieved conflicting probe [%s]. Local host won.", t);
229 static gboolean handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *record, gboolean unique, const AvahiAddress *a) {
230 gboolean valid = TRUE;
238 t = avahi_record_to_string(record);
240 /* g_message("CHECKING FOR CONFLICT: [%s]", t); */
242 for (e = g_hash_table_lookup(s->entries_by_key, record->key); e; e = n) {
248 if (avahi_entry_registered(s, e, i)) {
250 gboolean equal = avahi_record_equal_no_ttl(record, e->record);
252 /* Check whether there is a unique record conflict */
253 if (!equal && ((e->flags & AVAHI_ENTRY_UNIQUE) || unique)) {
256 /* The lexicographically later data wins. */
257 if ((cmp = avahi_record_lexicographical_compare(record, e->record)) > 0) {
258 g_message("Recieved conflicting record [%s]. Local host lost. Withdrawing.", t);
259 withdraw_entry(s, e);
260 } else if (cmp < 0) {
261 /* Tell the other host that our entry is lexicographically later */
263 g_message("Recieved conflicting record [%s]. Local host won. Refreshing.", t);
266 avahi_interface_post_response(i, e->record, e->flags & AVAHI_ENTRY_UNIQUE, TRUE);
269 /* Check wheter there is a TTL conflict */
270 } else if (equal && record->ttl <= e->record->ttl/2) {
271 /* Correct the TTL */
273 avahi_interface_post_response(i, e->record, e->flags & AVAHI_ENTRY_UNIQUE, TRUE);
274 g_message("Recieved record with bad TTL [%s]. Refreshing.", t);
277 } else if (avahi_entry_registering(s, e, i)) {
279 if (!avahi_record_equal_no_ttl(record, e->record) && ((e->flags & AVAHI_ENTRY_UNIQUE) || unique)) {
281 /* We are currently registering a matching record, but
282 * someone else already claimed it, so let's
285 g_message("Recieved conflicting record [%s] with local record to be. Withdrawing.", t);
286 withdraw_entry(s, e);
296 static void generate_response(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, guint16 port, gboolean legacy_unicast) {
303 if (legacy_unicast) {
304 AvahiDnsPacket *reply;
307 reply = avahi_dns_packet_new_reply(p, 512 /* unicast DNS maximum packet size is 512 */ , TRUE, TRUE);
309 while ((r = avahi_record_list_pop(s->record_list, NULL, NULL))) {
311 if (avahi_dns_packet_append_record(reply, r, FALSE, 10))
312 avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT);
314 gchar *t = avahi_record_to_string(r);
315 g_warning("Record [%s] not fitting in legacy unicast packet, dropping.", t);
319 avahi_record_unref(r);
322 if (avahi_dns_packet_get_field(reply, AVAHI_DNS_FIELD_ANCOUNT) != 0)
323 avahi_interface_send_packet_unicast(i, reply, a, port);
325 avahi_dns_packet_free(reply);
328 gboolean unicast_response, flush_cache;
329 AvahiDnsPacket *reply = NULL;
332 while ((r = avahi_record_list_pop(s->record_list, &flush_cache, &unicast_response))) {
334 if (!avahi_interface_post_response(i, r, flush_cache, FALSE) && unicast_response) {
336 /* Due to some reasons the record has not been scheduled.
337 * The client requested an unicast response in that
338 * case. Therefore we prepare such a response */
343 reply = avahi_dns_packet_new_reply(p, i->hardware->mtu, FALSE, FALSE);
345 if (avahi_dns_packet_append_record(reply, r, flush_cache, 0)) {
347 /* Appending this record succeeded, so incremeant
348 * the specific header field, and return to the caller */
350 avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT);
355 if (avahi_dns_packet_get_field(reply, AVAHI_DNS_FIELD_ANCOUNT) == 0) {
356 gchar *t = avahi_record_to_string(r);
357 g_warning("Record [%s] too large, doesn't fit in any packet!", t);
362 /* Appending the record didn't succeeed, so let's send this packet, and create a new one */
363 avahi_interface_send_packet_unicast(i, reply, a, port);
364 avahi_dns_packet_free(reply);
369 avahi_record_unref(r);
373 if (avahi_dns_packet_get_field(reply, AVAHI_DNS_FIELD_ANCOUNT) != 0)
374 avahi_interface_send_packet_unicast(i, reply, a, port);
375 avahi_dns_packet_free(reply);
380 static void handle_query(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, guint16 port, gboolean legacy_unicast) {
388 g_assert(avahi_record_list_empty(s->record_list));
390 /* Handle the questions */
391 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT); n > 0; n --) {
393 gboolean unicast_response = FALSE;
395 if (!(key = avahi_dns_packet_consume_key(p, &unicast_response))) {
396 g_warning("Packet too short (1)");
400 handle_query_key(s, i, key, unicast_response);
401 avahi_key_unref(key);
404 /* Known Answer Suppression */
405 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT); n > 0; n --) {
407 gboolean unique = FALSE;
409 if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
410 g_warning("Packet too short (2)");
414 if (handle_conflict(s, i, record, unique, a))
415 avahi_record_list_drop(s->record_list, record);
417 avahi_record_unref(record);
421 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT); n > 0; n --) {
423 gboolean unique = FALSE;
425 if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
426 g_warning("Packet too short (3)");
430 if (record->key->type != AVAHI_DNS_TYPE_ANY)
431 incoming_probe(s, record, i);
433 avahi_record_unref(record);
436 if (!avahi_record_list_empty(s->record_list))
437 generate_response(s, p, i, a, port, legacy_unicast);
442 avahi_record_list_flush(s->record_list);
445 static void handle_response(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a) {
453 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) +
454 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT); n > 0; n--) {
456 gboolean cache_flush = FALSE;
459 if (!(record = avahi_dns_packet_consume_record(p, &cache_flush))) {
460 g_warning("Packet too short (4)");
464 if (record->key->type != AVAHI_DNS_TYPE_ANY) {
466 g_message("Handling response: %s", txt = avahi_record_to_string(record));
469 if (handle_conflict(s, i, record, cache_flush, a)) {
470 avahi_cache_update(i->cache, record, cache_flush, a);
471 avahi_packet_scheduler_incoming_response(i->scheduler, record);
475 avahi_record_unref(record);
479 static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, struct sockaddr *sa, gint iface, gint ttl) {
489 if (!(i = avahi_interface_monitor_get_interface(s->monitor, iface, sa->sa_family))) {
490 g_warning("Recieved packet from invalid interface.");
494 g_message("new packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol);
496 if (sa->sa_family == AF_INET6) {
497 static const guint8 ipv4_in_ipv6[] = {
498 0x00, 0x00, 0x00, 0x00,
499 0x00, 0x00, 0x00, 0x00,
500 0xFF, 0xFF, 0xFF, 0xFF };
502 /* This is an IPv4 address encapsulated in IPv6, so let's ignore it. */
504 if (memcmp(((struct sockaddr_in6*) sa)->sin6_addr.s6_addr, ipv4_in_ipv6, sizeof(ipv4_in_ipv6)) == 0)
508 if (avahi_dns_packet_check_valid(p) < 0) {
509 g_warning("Recieved invalid packet.");
513 port = avahi_port_from_sockaddr(sa);
514 avahi_address_from_sockaddr(sa, &a);
516 if (avahi_dns_packet_is_query(p)) {
517 gboolean legacy_unicast = FALSE;
519 if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT) == 0 ||
520 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT) != 0) {
521 g_warning("Invalid query packet.");
525 if (port != AVAHI_MDNS_PORT) {
528 if ((avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) != 0 ||
529 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0)) {
530 g_warning("Invalid legacy unicast query packet.");
534 legacy_unicast = TRUE;
537 handle_query(s, p, i, &a, port, legacy_unicast);
539 g_message("Handled query");
542 if (port != AVAHI_MDNS_PORT) {
543 g_warning("Recieved repsonse with invalid source port %u on interface '%s.%i'", port, i->hardware->name, i->protocol);
548 g_warning("Recieved response with invalid TTL %u on interface '%s.%i'.", ttl, i->hardware->name, i->protocol);
549 if (!s->ignore_bad_ttl)
553 if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT) != 0 ||
554 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) == 0 ||
555 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0) {
556 g_warning("Invalid response packet.");
560 handle_response(s, p, i, &a);
561 g_message("Handled response");
565 static void work(AvahiServer *s) {
566 struct sockaddr_in6 sa6;
567 struct sockaddr_in sa;
574 if (s->pollfd_ipv4.revents & G_IO_IN) {
575 if ((p = avahi_recv_dns_packet_ipv4(s->fd_ipv4, &sa, &iface, &ttl))) {
576 dispatch_packet(s, p, (struct sockaddr*) &sa, iface, ttl);
577 avahi_dns_packet_free(p);
581 if (s->pollfd_ipv6.revents & G_IO_IN) {
582 if ((p = avahi_recv_dns_packet_ipv6(s->fd_ipv6, &sa6, &iface, &ttl))) {
583 dispatch_packet(s, p, (struct sockaddr*) &sa6, iface, ttl);
584 avahi_dns_packet_free(p);
589 static gboolean prepare_func(GSource *source, gint *timeout) {
597 static gboolean check_func(GSource *source) {
601 s = *((AvahiServer**) (((guint8*) source) + sizeof(GSource)));
604 return (s->pollfd_ipv4.revents | s->pollfd_ipv6.revents) & (G_IO_IN | G_IO_HUP | G_IO_ERR);
607 static gboolean dispatch_func(GSource *source, GSourceFunc callback, gpointer user_data) {
611 s = *((AvahiServer**) (((guint8*) source) + sizeof(GSource)));
620 static void add_default_entries(AvahiServer *s) {
621 struct utsname utsname;
627 /* Fill in HINFO rr */
628 r = avahi_record_new_full(s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_HINFO);
630 r->data.hinfo.cpu = g_strdup(g_strup(utsname.machine));
631 r->data.hinfo.os = g_strdup(g_strup(utsname.sysname));
632 avahi_server_add(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE, r);
633 avahi_record_unref(r);
635 /* Add localhost entries */
636 avahi_address_parse("127.0.0.1", AF_INET, &a);
637 avahi_server_add_address(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE|AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "localhost", &a);
639 avahi_address_parse("::1", AF_INET6, &a);
640 avahi_server_add_address(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE|AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "ip6-localhost", &a);
643 AvahiServer *avahi_server_new(GMainContext *c) {
647 static GSourceFuncs source_funcs = {
656 s = g_new(AvahiServer, 1);
658 s->ignore_bad_ttl = FALSE;
659 s->need_entry_cleanup = s->need_group_cleanup = FALSE;
661 s->fd_ipv4 = avahi_open_socket_ipv4();
662 s->fd_ipv6 = avahi_open_socket_ipv6();
664 if (s->fd_ipv6 < 0 && s->fd_ipv4 < 0) {
665 g_critical("Failed to create IP sockets.\n");
671 g_message("Failed to create IPv4 socket, proceeding in IPv6 only mode");
672 else if (s->fd_ipv6 < 0)
673 g_message("Failed to create IPv6 socket, proceeding in IPv4 only mode");
676 g_main_context_ref(s->context = c);
678 s->context = g_main_context_default();
680 AVAHI_LLIST_HEAD_INIT(AvahiEntry, s->entries);
681 s->entries_by_key = g_hash_table_new((GHashFunc) avahi_key_hash, (GEqualFunc) avahi_key_equal);
682 AVAHI_LLIST_HEAD_INIT(AvahiGroup, s->groups);
684 AVAHI_LLIST_HEAD_INIT(AvahiSubscription, s->subscriptions);
685 s->subscription_hashtable = g_hash_table_new((GHashFunc) avahi_key_hash, (GEqualFunc) avahi_key_equal);
688 hn = avahi_get_host_name();
689 hn[strcspn(hn, ".")] = 0;
691 s->hostname = g_strdup_printf("%s.local.", hn);
694 s->record_list = avahi_record_list_new();
696 s->time_event_queue = avahi_time_event_queue_new(s->context, G_PRIORITY_DEFAULT+10); /* Slightly less priority than the FDs */
697 s->monitor = avahi_interface_monitor_new(s);
698 avahi_interface_monitor_sync(s->monitor);
699 add_default_entries(s);
701 /* Prepare IO source registration */
702 s->source = g_source_new(&source_funcs, sizeof(GSource) + sizeof(AvahiServer*));
703 *((AvahiServer**) (((guint8*) s->source) + sizeof(GSource))) = s;
705 memset(&s->pollfd_ipv4, 0, sizeof(s->pollfd_ipv4));
706 s->pollfd_ipv4.fd = s->fd_ipv4;
707 s->pollfd_ipv4.events = G_IO_IN|G_IO_ERR|G_IO_HUP;
708 g_source_add_poll(s->source, &s->pollfd_ipv4);
710 memset(&s->pollfd_ipv6, 0, sizeof(s->pollfd_ipv6));
711 s->pollfd_ipv6.fd = s->fd_ipv6;
712 s->pollfd_ipv6.events = G_IO_IN|G_IO_ERR|G_IO_HUP;
713 g_source_add_poll(s->source, &s->pollfd_ipv6);
715 g_source_attach(s->source, s->context);
720 void avahi_server_free(AvahiServer* s) {
724 free_entry(s, s->entries);
726 avahi_interface_monitor_free(s->monitor);
729 free_group(s, s->groups);
731 while (s->subscriptions)
732 avahi_subscription_free(s->subscriptions);
733 g_hash_table_destroy(s->subscription_hashtable);
735 g_hash_table_destroy(s->entries_by_key);
737 avahi_time_event_queue_free(s->time_event_queue);
739 avahi_record_list_free(s->record_list);
748 g_source_destroy(s->source);
749 g_source_unref(s->source);
750 g_main_context_unref(s->context);
755 void avahi_server_add(
760 AvahiEntryFlags flags,
767 g_assert(r->key->type != AVAHI_DNS_TYPE_ANY);
769 e = g_new(AvahiEntry, 1);
771 e->record = avahi_record_ref(r);
773 e->interface = interface;
774 e->protocol = protocol;
778 AVAHI_LLIST_HEAD_INIT(AvahiAnnouncement, e->announcements);
780 AVAHI_LLIST_PREPEND(AvahiEntry, entries, s->entries, e);
782 /* Insert into hash table indexed by name */
783 t = g_hash_table_lookup(s->entries_by_key, e->record->key);
784 AVAHI_LLIST_PREPEND(AvahiEntry, by_key, t, e);
785 g_hash_table_replace(s->entries_by_key, e->record->key, t);
787 /* Insert into group list */
789 AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e);
791 avahi_announce_entry(s, e);
793 const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiEntryGroup *g, void **state) {
794 AvahiEntry **e = (AvahiEntry**) state;
799 *e = g ? g->entries : s->entries;
801 while (*e && (*e)->dead)
802 *e = g ? (*e)->by_group_next : (*e)->entries_next;
807 return avahi_record_ref((*e)->record);
810 void avahi_server_dump(AvahiServer *s, FILE *f) {
815 fprintf(f, "\n;;; ZONE DUMP FOLLOWS ;;;\n");
817 for (e = s->entries; e; e = e->entries_next) {
823 t = avahi_record_to_string(e->record);
824 fprintf(f, "%s ; iface=%i proto=%i\n", t, e->interface, e->protocol);
828 avahi_dump_caches(s->monitor, f);
831 void avahi_server_add_ptr(
836 AvahiEntryFlags flags,
844 r = avahi_record_new_full(name ? name : s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR);
845 r->data.ptr.name = avahi_normalize_name(dest);
846 avahi_server_add(s, g, interface, protocol, flags, r);
847 avahi_record_unref(r);
850 void avahi_server_add_address(
855 AvahiEntryFlags flags,
863 name = name ? (n = avahi_normalize_name(name)) : s->hostname;
865 if (a->family == AF_INET) {
869 r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A);
870 r->data.a.address = a->data.ipv4;
871 avahi_server_add(s, g, interface, protocol, flags, r);
872 avahi_record_unref(r);
874 reverse = avahi_reverse_lookup_name_ipv4(&a->data.ipv4);
876 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
883 r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA);
884 r->data.aaaa.address = a->data.ipv6;
885 avahi_server_add(s, g, interface, protocol, flags, r);
886 avahi_record_unref(r);
888 reverse = avahi_reverse_lookup_name_ipv6_arpa(&a->data.ipv6);
890 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
893 reverse = avahi_reverse_lookup_name_ipv6_int(&a->data.ipv6);
895 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
902 void avahi_server_add_text_strlst(
907 AvahiEntryFlags flags,
909 AvahiStringList *strlst) {
915 r = avahi_record_new_full(name ? name : s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT);
916 r->data.txt.string_list = strlst;
917 avahi_server_add(s, g, interface, protocol, flags, r);
918 avahi_record_unref(r);
921 void avahi_server_add_text_va(
926 AvahiEntryFlags flags,
932 avahi_server_add_text_strlst(s, g, interface, protocol, flags, name, avahi_string_list_new_va(va));
935 void avahi_server_add_text(
940 AvahiEntryFlags flags,
949 avahi_server_add_text_va(s, g, interface, protocol, flags, name, va);
953 static void escape_service_name(gchar *d, guint size, const gchar *s) {
958 while (*s && size >= 2) {
959 if (*s == '.' || *s == '\\') {
975 void avahi_server_add_service_strlst(
985 AvahiStringList *strlst) {
987 gchar ptr_name[256], svc_name[256], ename[64], enum_ptr[256];
994 escape_service_name(ename, sizeof(ename), name);
997 while (domain[0] == '.')
1005 snprintf(ptr_name, sizeof(ptr_name), "%s.%s", type, domain);
1006 snprintf(svc_name, sizeof(svc_name), "%s.%s.%s", ename, type, domain);
1008 avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, ptr_name, svc_name);
1010 r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV);
1011 r->data.srv.priority = 0;
1012 r->data.srv.weight = 0;
1013 r->data.srv.port = port;
1014 r->data.srv.name = avahi_normalize_name(host);
1015 avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, r);
1016 avahi_record_unref(r);
1018 avahi_server_add_text_strlst(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, svc_name, strlst);
1020 snprintf(enum_ptr, sizeof(enum_ptr), "_services._dns-sd._udp.%s", domain);
1021 avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, enum_ptr, ptr_name);
1024 void avahi_server_add_service_va(
1031 const gchar *domain,
1040 avahi_server_add_service_strlst(s, g, interface, protocol, type, name, domain, host, port, avahi_string_list_new_va(va));
1043 void avahi_server_add_service(
1050 const gchar *domain,
1062 avahi_server_add_service_va(s, g, interface, protocol, type, name, domain, host, port, va);
1066 static void post_query_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, gpointer userdata) {
1067 AvahiKey *k = userdata;
1073 avahi_interface_post_query(i, k, FALSE);
1076 void avahi_server_post_query(AvahiServer *s, gint interface, guchar protocol, AvahiKey *key) {
1080 avahi_interface_monitor_walk(s->monitor, interface, protocol, post_query_callback, key);
1084 AvahiRecord *record;
1085 gboolean flush_cache;
1088 static void post_response_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, gpointer userdata) {
1089 struct tmpdata *tmpdata = userdata;
1095 avahi_interface_post_response(i, tmpdata->record, tmpdata->flush_cache, FALSE);
1098 void avahi_server_post_response(AvahiServer *s, gint interface, guchar protocol, AvahiRecord *record, gboolean flush_cache) {
1099 struct tmpdata tmpdata;
1104 tmpdata.record = record;
1105 tmpdata.flush_cache = flush_cache;
1107 avahi_interface_monitor_walk(s->monitor, interface, protocol, post_response_callback, &tmpdata);
1110 void avahi_entry_group_change_state(AvahiEntryGroup *g, AvahiEntryGroupState state) {
1116 g->callback(g->server, g, state, g->userdata);
1121 AvahiEntryGroup *avahi_entry_group_new(AvahiServer *s, AvahiEntryGroupCallback callback, gpointer userdata) {
1126 g = g_new(AvahiEntryGroup, 1);
1128 g->callback = callback;
1129 g->userdata = userdata;
1131 g->state = AVAHI_ENTRY_GROUP_UNCOMMITED;
1133 AVAHI_LLIST_HEAD_INIT(AvahiEntry, g->entries);
1135 AVAHI_LLIST_PREPEND(AvahiEntryGroup, groups, s->groups, g);
1139 void avahi_entry_group_free(AvahiEntryGroup *g) {
1141 g_assert(g->server);
1144 g->server->need_group_cleanup = TRUE;
1147 void avahi_entry_group_commit(AvahiEntryGroup *g) {
1151 if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED)
1154 avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
1155 avahi_announce_group(g->server, g);
1156 avahi_entry_group_check_probed(g, FALSE);
1159 gboolean avahi_entry_commited(AvahiEntry *e) {
1164 e->group->state == AVAHI_ENTRY_GROUP_REGISTERING ||
1165 e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED;
1168 AvahiEntryGroupState avahi_entry_group_get_state(AvahiEntryGroup *g) {