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 handle_query_key(AvahiServer *s, AvahiKey *k, AvahiInterface *i, const AvahiAddress *a, guint16 port, gboolean legacy_unicast, gboolean unicast_response) {
114 g_message("Handling query: %s", txt = avahi_key_to_string(k));
117 avahi_packet_scheduler_incoming_query(i->scheduler, k);
119 if (k->type == AVAHI_DNS_TYPE_ANY) {
121 /* Handle ANY query */
123 for (e = s->entries; e; e = e->entries_next)
124 if (!e->dead && avahi_key_pattern_match(k, e->record->key) && avahi_entry_registered(s, e, i))
125 avahi_interface_post_response(i, a, e->record, e->flags & AVAHI_ENTRY_UNIQUE, FALSE);
128 /* Handle all other queries */
130 for (e = g_hash_table_lookup(s->entries_by_key, k); e; e = e->by_key_next)
131 if (!e->dead && avahi_entry_registered(s, e, i))
132 avahi_interface_post_response(i, a, e->record, e->flags & AVAHI_ENTRY_UNIQUE, FALSE);
136 static void withdraw_entry(AvahiServer *s, AvahiEntry *e) {
144 for (k = e->group->entries; k; k = k->by_group_next) {
145 avahi_goodbye_entry(s, k, FALSE);
149 avahi_entry_group_change_state(e->group, AVAHI_ENTRY_GROUP_COLLISION);
151 avahi_goodbye_entry(s, e, FALSE);
155 s->need_entry_cleanup = TRUE;
158 static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i) {
166 t = avahi_record_to_string(record);
168 /* g_message("PROBE: [%s]", t); */
170 for (e = g_hash_table_lookup(s->entries_by_key, record->key); e; e = n) {
173 if (e->dead || avahi_record_equal_no_ttl(record, e->record))
176 if (avahi_entry_registering(s, e, i)) {
179 if ((cmp = avahi_record_lexicographical_compare(record, e->record)) > 0) {
180 withdraw_entry(s, e);
181 g_message("Recieved conflicting probe [%s]. Local host lost. Withdrawing.", t);
183 g_message("Recieved conflicting probe [%s]. Local host won.", t);
191 static void handle_query(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, guint16 port, gboolean legacy_unicast) {
199 /* Handle the questions */
200 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT); n > 0; n --) {
202 gboolean unicast_response = FALSE;
204 if (!(key = avahi_dns_packet_consume_key(p, &unicast_response))) {
205 g_warning("Packet too short (1)");
209 handle_query_key(s, key, i, a, port, legacy_unicast, unicast_response);
210 avahi_key_unref(key);
213 /* Known Answer Suppression */
214 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT); n > 0; n --) {
216 gboolean unique = FALSE;
218 if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
219 g_warning("Packet too short (2)");
223 avahi_packet_scheduler_incoming_known_answer(i->scheduler, record, a);
224 avahi_record_unref(record);
228 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT); n > 0; n --) {
230 gboolean unique = FALSE;
232 if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
233 g_warning("Packet too short (3)");
237 if (record->key->type != AVAHI_DNS_TYPE_ANY)
238 incoming_probe(s, record, i);
240 avahi_record_unref(record);
244 static gboolean handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *record, gboolean unique, const AvahiAddress *a) {
245 gboolean valid = TRUE;
253 t = avahi_record_to_string(record);
255 /* g_message("CHECKING FOR CONFLICT: [%s]", t); */
257 for (e = g_hash_table_lookup(s->entries_by_key, record->key); e; e = n) {
263 if (avahi_entry_registered(s, e, i)) {
265 gboolean equal = avahi_record_equal_no_ttl(record, e->record);
267 /* Check whether there is a unique record conflict */
268 if (!equal && ((e->flags & AVAHI_ENTRY_UNIQUE) || unique)) {
271 /* The lexicographically later data wins. */
272 if ((cmp = avahi_record_lexicographical_compare(record, e->record)) > 0) {
273 g_message("Recieved conflicting record [%s]. Local host lost. Withdrawing.", t);
274 withdraw_entry(s, e);
275 } else if (cmp < 0) {
276 /* Tell the other host that our entry is lexicographically later */
278 g_message("Recieved conflicting record [%s]. Local host won. Refreshing.", t);
281 avahi_interface_post_response(i, a, e->record, e->flags & AVAHI_ENTRY_UNIQUE, TRUE);
284 /* Check wheter there is a TTL conflict */
285 } else if (equal && record->ttl <= e->record->ttl/2) {
286 /* Correct the TTL */
288 avahi_interface_post_response(i, a, e->record, e->flags & AVAHI_ENTRY_UNIQUE, TRUE);
289 g_message("Recieved record with bad TTL [%s]. Refreshing.", t);
292 } else if (avahi_entry_registering(s, e, i)) {
294 if (!avahi_record_equal_no_ttl(record, e->record) && ((e->flags & AVAHI_ENTRY_UNIQUE) || unique)) {
296 /* We are currently registering a matching record, but
297 * someone else already claimed it, so let's
300 g_message("Recieved conflicting record [%s] with local record to be. Withdrawing.", t);
301 withdraw_entry(s, e);
311 static void handle_response(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a) {
319 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) +
320 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT); n > 0; n--) {
322 gboolean cache_flush = FALSE;
325 if (!(record = avahi_dns_packet_consume_record(p, &cache_flush))) {
326 g_warning("Packet too short (4)");
330 if (record->key->type != AVAHI_DNS_TYPE_ANY) {
332 g_message("Handling response: %s", txt = avahi_record_to_string(record));
335 if (handle_conflict(s, i, record, cache_flush, a)) {
336 avahi_cache_update(i->cache, record, cache_flush, a);
337 avahi_packet_scheduler_incoming_response(i->scheduler, record);
341 avahi_record_unref(record);
345 static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, struct sockaddr *sa, gint iface, gint ttl) {
355 if (!(i = avahi_interface_monitor_get_interface(s->monitor, iface, sa->sa_family))) {
356 g_warning("Recieved packet from invalid interface.");
360 g_message("new packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol);
362 if (sa->sa_family == AF_INET6) {
363 static const guint8 ipv4_in_ipv6[] = {
364 0x00, 0x00, 0x00, 0x00,
365 0x00, 0x00, 0x00, 0x00,
366 0xFF, 0xFF, 0xFF, 0xFF };
368 /* This is an IPv4 address encapsulated in IPv6, so let's ignore it. */
370 if (memcmp(((struct sockaddr_in6*) sa)->sin6_addr.s6_addr, ipv4_in_ipv6, sizeof(ipv4_in_ipv6)) == 0)
374 if (avahi_dns_packet_check_valid(p) < 0) {
375 g_warning("Recieved invalid packet.");
379 port = avahi_port_from_sockaddr(sa);
380 avahi_address_from_sockaddr(sa, &a);
382 if (avahi_dns_packet_is_query(p)) {
383 gboolean legacy_unicast = FALSE;
385 if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT) == 0 ||
386 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT) != 0) {
387 g_warning("Invalid query packet.");
391 if (port != AVAHI_MDNS_PORT) {
394 if ((avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) != 0 ||
395 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0)) {
396 g_warning("Invalid legacy unicast query packet.");
400 legacy_unicast = TRUE;
403 handle_query(s, p, i, &a, port, legacy_unicast);
405 g_message("Handled query");
408 if (port != AVAHI_MDNS_PORT) {
409 g_warning("Recieved repsonse with invalid source port %u on interface '%s.%i'", port, i->hardware->name, i->protocol);
414 g_warning("Recieved response with invalid TTL %u on interface '%s.%i'.", ttl, i->hardware->name, i->protocol);
415 if (!s->ignore_bad_ttl)
419 if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT) != 0 ||
420 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) == 0 ||
421 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0) {
422 g_warning("Invalid response packet.");
426 handle_response(s, p, i, &a);
427 g_message("Handled response");
431 static void work(AvahiServer *s) {
432 struct sockaddr_in6 sa6;
433 struct sockaddr_in sa;
440 if (s->pollfd_ipv4.revents & G_IO_IN) {
441 if ((p = avahi_recv_dns_packet_ipv4(s->fd_ipv4, &sa, &iface, &ttl))) {
442 dispatch_packet(s, p, (struct sockaddr*) &sa, iface, ttl);
443 avahi_dns_packet_free(p);
447 if (s->pollfd_ipv6.revents & G_IO_IN) {
448 if ((p = avahi_recv_dns_packet_ipv6(s->fd_ipv6, &sa6, &iface, &ttl))) {
449 dispatch_packet(s, p, (struct sockaddr*) &sa6, iface, ttl);
450 avahi_dns_packet_free(p);
455 static gboolean prepare_func(GSource *source, gint *timeout) {
463 static gboolean check_func(GSource *source) {
467 s = *((AvahiServer**) (((guint8*) source) + sizeof(GSource)));
470 return (s->pollfd_ipv4.revents | s->pollfd_ipv6.revents) & (G_IO_IN | G_IO_HUP | G_IO_ERR);
473 static gboolean dispatch_func(GSource *source, GSourceFunc callback, gpointer user_data) {
477 s = *((AvahiServer**) (((guint8*) source) + sizeof(GSource)));
486 static void add_default_entries(AvahiServer *s) {
487 struct utsname utsname;
493 /* Fill in HINFO rr */
494 r = avahi_record_new_full(s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_HINFO);
496 r->data.hinfo.cpu = g_strdup(g_strup(utsname.machine));
497 r->data.hinfo.os = g_strdup(g_strup(utsname.sysname));
498 avahi_server_add(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE, r);
499 avahi_record_unref(r);
501 /* Add localhost entries */
502 avahi_address_parse("127.0.0.1", AF_INET, &a);
503 avahi_server_add_address(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE|AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "localhost", &a);
505 avahi_address_parse("::1", AF_INET6, &a);
506 avahi_server_add_address(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE|AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "ip6-localhost", &a);
509 AvahiServer *avahi_server_new(GMainContext *c) {
513 static GSourceFuncs source_funcs = {
522 s = g_new(AvahiServer, 1);
524 s->ignore_bad_ttl = FALSE;
525 s->need_entry_cleanup = s->need_group_cleanup = FALSE;
527 s->fd_ipv4 = avahi_open_socket_ipv4();
528 s->fd_ipv6 = avahi_open_socket_ipv6();
530 if (s->fd_ipv6 < 0 && s->fd_ipv4 < 0) {
531 g_critical("Failed to create IP sockets.\n");
537 g_message("Failed to create IPv4 socket, proceeding in IPv6 only mode");
538 else if (s->fd_ipv6 < 0)
539 g_message("Failed to create IPv6 socket, proceeding in IPv4 only mode");
542 g_main_context_ref(s->context = c);
544 s->context = g_main_context_default();
546 AVAHI_LLIST_HEAD_INIT(AvahiEntry, s->entries);
547 s->entries_by_key = g_hash_table_new((GHashFunc) avahi_key_hash, (GEqualFunc) avahi_key_equal);
548 AVAHI_LLIST_HEAD_INIT(AvahiGroup, s->groups);
550 AVAHI_LLIST_HEAD_INIT(AvahiSubscription, s->subscriptions);
551 s->subscription_hashtable = g_hash_table_new((GHashFunc) avahi_key_hash, (GEqualFunc) avahi_key_equal);
554 hn = avahi_get_host_name();
555 hn[strcspn(hn, ".")] = 0;
557 s->hostname = g_strdup_printf("%s.local.", hn);
560 s->time_event_queue = avahi_time_event_queue_new(s->context, G_PRIORITY_DEFAULT+10); /* Slightly less priority than the FDs */
561 s->monitor = avahi_interface_monitor_new(s);
562 avahi_interface_monitor_sync(s->monitor);
563 add_default_entries(s);
565 /* Prepare IO source registration */
566 s->source = g_source_new(&source_funcs, sizeof(GSource) + sizeof(AvahiServer*));
567 *((AvahiServer**) (((guint8*) s->source) + sizeof(GSource))) = s;
569 memset(&s->pollfd_ipv4, 0, sizeof(s->pollfd_ipv4));
570 s->pollfd_ipv4.fd = s->fd_ipv4;
571 s->pollfd_ipv4.events = G_IO_IN|G_IO_ERR|G_IO_HUP;
572 g_source_add_poll(s->source, &s->pollfd_ipv4);
574 memset(&s->pollfd_ipv6, 0, sizeof(s->pollfd_ipv6));
575 s->pollfd_ipv6.fd = s->fd_ipv6;
576 s->pollfd_ipv6.events = G_IO_IN|G_IO_ERR|G_IO_HUP;
577 g_source_add_poll(s->source, &s->pollfd_ipv6);
579 g_source_attach(s->source, s->context);
584 void avahi_server_free(AvahiServer* s) {
588 free_entry(s, s->entries);
590 avahi_interface_monitor_free(s->monitor);
593 free_group(s, s->groups);
595 while (s->subscriptions)
596 avahi_subscription_free(s->subscriptions);
597 g_hash_table_destroy(s->subscription_hashtable);
599 g_hash_table_destroy(s->entries_by_key);
601 avahi_time_event_queue_free(s->time_event_queue);
610 g_source_destroy(s->source);
611 g_source_unref(s->source);
612 g_main_context_unref(s->context);
617 void avahi_server_add(
622 AvahiEntryFlags flags,
629 g_assert(r->key->type != AVAHI_DNS_TYPE_ANY);
631 e = g_new(AvahiEntry, 1);
633 e->record = avahi_record_ref(r);
635 e->interface = interface;
636 e->protocol = protocol;
640 AVAHI_LLIST_HEAD_INIT(AvahiAnnouncement, e->announcements);
642 AVAHI_LLIST_PREPEND(AvahiEntry, entries, s->entries, e);
644 /* Insert into hash table indexed by name */
645 t = g_hash_table_lookup(s->entries_by_key, e->record->key);
646 AVAHI_LLIST_PREPEND(AvahiEntry, by_key, t, e);
647 g_hash_table_replace(s->entries_by_key, e->record->key, t);
649 /* Insert into group list */
651 AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e);
653 avahi_announce_entry(s, e);
655 const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiEntryGroup *g, void **state) {
656 AvahiEntry **e = (AvahiEntry**) state;
661 *e = g ? g->entries : s->entries;
663 while (*e && (*e)->dead)
664 *e = g ? (*e)->by_group_next : (*e)->entries_next;
669 return avahi_record_ref((*e)->record);
672 void avahi_server_dump(AvahiServer *s, FILE *f) {
677 fprintf(f, "\n;;; ZONE DUMP FOLLOWS ;;;\n");
679 for (e = s->entries; e; e = e->entries_next) {
685 t = avahi_record_to_string(e->record);
686 fprintf(f, "%s ; iface=%i proto=%i\n", t, e->interface, e->protocol);
690 avahi_dump_caches(s->monitor, f);
693 void avahi_server_add_ptr(
698 AvahiEntryFlags flags,
706 r = avahi_record_new_full(name ? name : s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR);
707 r->data.ptr.name = avahi_normalize_name(dest);
708 avahi_server_add(s, g, interface, protocol, flags, r);
709 avahi_record_unref(r);
712 void avahi_server_add_address(
717 AvahiEntryFlags flags,
725 name = name ? (n = avahi_normalize_name(name)) : s->hostname;
727 if (a->family == AF_INET) {
731 r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A);
732 r->data.a.address = a->data.ipv4;
733 avahi_server_add(s, g, interface, protocol, flags, r);
734 avahi_record_unref(r);
736 reverse = avahi_reverse_lookup_name_ipv4(&a->data.ipv4);
738 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
745 r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA);
746 r->data.aaaa.address = a->data.ipv6;
747 avahi_server_add(s, g, interface, protocol, flags, r);
748 avahi_record_unref(r);
750 reverse = avahi_reverse_lookup_name_ipv6_arpa(&a->data.ipv6);
752 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
755 reverse = avahi_reverse_lookup_name_ipv6_int(&a->data.ipv6);
757 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
764 void avahi_server_add_text_strlst(
769 AvahiEntryFlags flags,
771 AvahiStringList *strlst) {
777 r = avahi_record_new_full(name ? name : s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT);
778 r->data.txt.string_list = strlst;
779 avahi_server_add(s, g, interface, protocol, flags, r);
780 avahi_record_unref(r);
783 void avahi_server_add_text_va(
788 AvahiEntryFlags flags,
794 avahi_server_add_text_strlst(s, g, interface, protocol, flags, name, avahi_string_list_new_va(va));
797 void avahi_server_add_text(
802 AvahiEntryFlags flags,
811 avahi_server_add_text_va(s, g, interface, protocol, flags, name, va);
815 static void escape_service_name(gchar *d, guint size, const gchar *s) {
820 while (*s && size >= 2) {
821 if (*s == '.' || *s == '\\') {
837 void avahi_server_add_service_strlst(
847 AvahiStringList *strlst) {
849 gchar ptr_name[256], svc_name[256], ename[64], enum_ptr[256];
856 escape_service_name(ename, sizeof(ename), name);
859 while (domain[0] == '.')
867 snprintf(ptr_name, sizeof(ptr_name), "%s.%s", type, domain);
868 snprintf(svc_name, sizeof(svc_name), "%s.%s.%s", ename, type, domain);
870 avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, ptr_name, svc_name);
872 r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV);
873 r->data.srv.priority = 0;
874 r->data.srv.weight = 0;
875 r->data.srv.port = port;
876 r->data.srv.name = avahi_normalize_name(host);
877 avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, r);
878 avahi_record_unref(r);
880 avahi_server_add_text_strlst(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, svc_name, strlst);
882 snprintf(enum_ptr, sizeof(enum_ptr), "_services._dns-sd._udp.%s", domain);
883 avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, enum_ptr, ptr_name);
886 void avahi_server_add_service_va(
902 avahi_server_add_service(s, g, interface, protocol, type, name, domain, host, port, avahi_string_list_new_va(va));
905 void avahi_server_add_service(
924 avahi_server_add_service_va(s, g, interface, protocol, type, name, domain, host, port, va);
928 static void post_query_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, gpointer userdata) {
929 AvahiKey *k = userdata;
935 avahi_interface_post_query(i, k, FALSE);
938 void avahi_server_post_query(AvahiServer *s, gint interface, guchar protocol, AvahiKey *key) {
942 avahi_interface_monitor_walk(s->monitor, interface, protocol, post_query_callback, key);
947 gboolean flush_cache;
950 static void post_response_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, gpointer userdata) {
951 struct tmpdata *tmpdata = userdata;
957 avahi_interface_post_response(i, NULL, tmpdata->record, tmpdata->flush_cache, FALSE);
960 void avahi_server_post_response(AvahiServer *s, gint interface, guchar protocol, AvahiRecord *record, gboolean flush_cache) {
961 struct tmpdata tmpdata;
966 tmpdata.record = record;
967 tmpdata.flush_cache = flush_cache;
969 avahi_interface_monitor_walk(s->monitor, interface, protocol, post_response_callback, &tmpdata);
972 void avahi_entry_group_change_state(AvahiEntryGroup *g, AvahiEntryGroupState state) {
978 g->callback(g->server, g, state, g->userdata);
983 AvahiEntryGroup *avahi_entry_group_new(AvahiServer *s, AvahiEntryGroupCallback callback, gpointer userdata) {
988 g = g_new(AvahiEntryGroup, 1);
990 g->callback = callback;
991 g->userdata = userdata;
993 g->state = AVAHI_ENTRY_GROUP_UNCOMMITED;
995 AVAHI_LLIST_HEAD_INIT(AvahiEntry, g->entries);
997 AVAHI_LLIST_PREPEND(AvahiEntryGroup, groups, s->groups, g);
1001 void avahi_entry_group_free(AvahiEntryGroup *g) {
1003 g_assert(g->server);
1006 g->server->need_group_cleanup = TRUE;
1009 void avahi_entry_group_commit(AvahiEntryGroup *g) {
1013 if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED)
1016 avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
1017 avahi_announce_group(g->server, g);
1018 avahi_entry_group_check_probed(g, FALSE);
1021 gboolean avahi_entry_commited(AvahiEntry *e) {
1026 e->group->state == AVAHI_ENTRY_GROUP_REGISTERING ||
1027 e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED;
1030 AvahiEntryGroupState avahi_entry_group_get_state(AvahiEntryGroup *g) {