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 send_unicast_response_packet(AvahiServer *s, AvahiInterface *i, const AvahiAddress *a, guint16 port) {
109 g_assert(s->unicast_packet);
111 if (avahi_dns_packet_get_field(s->unicast_packet, AVAHI_DNS_FIELD_ANCOUNT) != 0)
112 avahi_interface_send_packet_unicast(i, s->unicast_packet, a, port);
114 avahi_dns_packet_free(s->unicast_packet);
115 s->unicast_packet = NULL;
118 static void post_response(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, guint16 port, AvahiRecord *r, gboolean flush_cache, gboolean legacy_unicast, gboolean unicast_response) {
124 if (legacy_unicast) {
126 /* Respond with a legacy unicast packet */
128 if (!(s->unicast_packet))
129 s->unicast_packet = avahi_dns_packet_new_reply(p, 512 /* unicast DNS maximum packet size is 512 */ , TRUE, TRUE);
131 if (avahi_dns_packet_append_record(s->unicast_packet, r, FALSE, 10))
133 /* Increment the ANCOUNT field */
135 avahi_dns_packet_set_field(s->unicast_packet, AVAHI_DNS_FIELD_ANCOUNT,
136 avahi_dns_packet_get_field(s->unicast_packet, AVAHI_DNS_FIELD_ANCOUNT)+1);
138 /* If there's no space left for this response we simply don't send it */
142 if (!avahi_interface_post_response(i, a, r, flush_cache, FALSE) && unicast_response) {
144 /* Due to some reasons the record has not been scheduled.
145 * The client requested an unicast response in that
146 * case. Therefore we prepare such a response */
150 if (!(s->unicast_packet))
151 s->unicast_packet = avahi_dns_packet_new_reply(p, i->hardware->mtu, FALSE, FALSE);
153 if (avahi_dns_packet_append_record(s->unicast_packet, r, flush_cache, 0)) {
155 /* Appending this record succeeded, so incremeant
156 * the specific header field, and return to the caller */
158 avahi_dns_packet_set_field(s->unicast_packet, AVAHI_DNS_FIELD_ANCOUNT,
159 avahi_dns_packet_get_field(s->unicast_packet, AVAHI_DNS_FIELD_ANCOUNT)+1);
164 if (avahi_dns_packet_get_field(s->unicast_packet, AVAHI_DNS_FIELD_ANCOUNT) == 0) {
165 g_warning("Record too large, doesn't fit in any packet!");
169 /* Appending the record didn't succeeed, so let's send this packet, and create a new one */
171 send_unicast_response_packet(s, i, a, port);
173 avahi_dns_packet_free(s->unicast_packet);
174 s->unicast_packet = NULL;
181 static void handle_query_key(AvahiServer *s, AvahiDnsPacket *p, AvahiKey *k, AvahiInterface *i, const AvahiAddress *a, guint16 port, gboolean legacy_unicast, gboolean unicast_response) {
190 g_message("Handling query: %s", txt = avahi_key_to_string(k));
193 avahi_packet_scheduler_incoming_query(i->scheduler, k);
195 if (k->type == AVAHI_DNS_TYPE_ANY) {
197 /* Handle ANY query */
199 for (e = s->entries; e; e = e->entries_next)
200 if (!e->dead && avahi_key_pattern_match(k, e->record->key) && avahi_entry_registered(s, e, i))
201 post_response(s, p, i, a, port, e->record, e->flags & AVAHI_ENTRY_UNIQUE, legacy_unicast, unicast_response);
205 /* Handle all other queries */
207 for (e = g_hash_table_lookup(s->entries_by_key, k); e; e = e->by_key_next)
208 if (!e->dead && avahi_entry_registered(s, e, i))
209 post_response(s, p, i, a, port, e->record, e->flags & AVAHI_ENTRY_UNIQUE, legacy_unicast, unicast_response);
213 static void withdraw_entry(AvahiServer *s, AvahiEntry *e) {
221 for (k = e->group->entries; k; k = k->by_group_next) {
222 avahi_goodbye_entry(s, k, FALSE);
226 avahi_entry_group_change_state(e->group, AVAHI_ENTRY_GROUP_COLLISION);
228 avahi_goodbye_entry(s, e, FALSE);
232 s->need_entry_cleanup = TRUE;
235 static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i) {
243 t = avahi_record_to_string(record);
245 /* g_message("PROBE: [%s]", t); */
247 for (e = g_hash_table_lookup(s->entries_by_key, record->key); e; e = n) {
250 if (e->dead || avahi_record_equal_no_ttl(record, e->record))
253 if (avahi_entry_registering(s, e, i)) {
256 if ((cmp = avahi_record_lexicographical_compare(record, e->record)) > 0) {
257 withdraw_entry(s, e);
258 g_message("Recieved conflicting probe [%s]. Local host lost. Withdrawing.", t);
260 g_message("Recieved conflicting probe [%s]. Local host won.", t);
268 static gboolean handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *record, gboolean unique, const AvahiAddress *a) {
269 gboolean valid = TRUE;
277 t = avahi_record_to_string(record);
279 /* g_message("CHECKING FOR CONFLICT: [%s]", t); */
281 for (e = g_hash_table_lookup(s->entries_by_key, record->key); e; e = n) {
287 if (avahi_entry_registered(s, e, i)) {
289 gboolean equal = avahi_record_equal_no_ttl(record, e->record);
291 /* Check whether there is a unique record conflict */
292 if (!equal && ((e->flags & AVAHI_ENTRY_UNIQUE) || unique)) {
295 /* The lexicographically later data wins. */
296 if ((cmp = avahi_record_lexicographical_compare(record, e->record)) > 0) {
297 g_message("Recieved conflicting record [%s]. Local host lost. Withdrawing.", t);
298 withdraw_entry(s, e);
299 } else if (cmp < 0) {
300 /* Tell the other host that our entry is lexicographically later */
302 g_message("Recieved conflicting record [%s]. Local host won. Refreshing.", t);
305 avahi_interface_post_response(i, a, e->record, e->flags & AVAHI_ENTRY_UNIQUE, TRUE);
308 /* Check wheter there is a TTL conflict */
309 } else if (equal && record->ttl <= e->record->ttl/2) {
310 /* Correct the TTL */
312 avahi_interface_post_response(i, a, e->record, e->flags & AVAHI_ENTRY_UNIQUE, TRUE);
313 g_message("Recieved record with bad TTL [%s]. Refreshing.", t);
316 } else if (avahi_entry_registering(s, e, i)) {
318 if (!avahi_record_equal_no_ttl(record, e->record) && ((e->flags & AVAHI_ENTRY_UNIQUE) || unique)) {
320 /* We are currently registering a matching record, but
321 * someone else already claimed it, so let's
324 g_message("Recieved conflicting record [%s] with local record to be. Withdrawing.", t);
325 withdraw_entry(s, e);
335 static void incoming_known_answer(AvahiServer *s, AvahiInterface *i, AvahiRecord *r, gboolean legacy_unicast, gboolean unique, const AvahiAddress *a) {
343 if (handle_conflict(s, i, r, unique, a))
344 avahi_packet_scheduler_incoming_known_answer(i->scheduler, r, a);
347 static void handle_query(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, guint16 port, gboolean legacy_unicast) {
355 g_assert(!s->unicast_packet);
357 /* Handle the questions */
358 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT); n > 0; n --) {
360 gboolean unicast_response = FALSE;
362 if (!(key = avahi_dns_packet_consume_key(p, &unicast_response))) {
363 g_warning("Packet too short (1)");
367 handle_query_key(s, p, key, i, a, port, legacy_unicast, unicast_response);
368 avahi_key_unref(key);
371 /* Known Answer Suppression */
372 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT); n > 0; n --) {
374 gboolean unique = FALSE;
376 if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
377 g_warning("Packet too short (2)");
381 incoming_known_answer(s, i, record, legacy_unicast, unique, a);
382 avahi_record_unref(record);
386 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT); n > 0; n --) {
388 gboolean unique = FALSE;
390 if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
391 g_warning("Packet too short (3)");
395 if (record->key->type != AVAHI_DNS_TYPE_ANY)
396 incoming_probe(s, record, i);
398 avahi_record_unref(record);
401 if (s->unicast_packet)
402 send_unicast_response_packet(s, i, a, port);
405 static void handle_response(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a) {
413 for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) +
414 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT); n > 0; n--) {
416 gboolean cache_flush = FALSE;
419 if (!(record = avahi_dns_packet_consume_record(p, &cache_flush))) {
420 g_warning("Packet too short (4)");
424 if (record->key->type != AVAHI_DNS_TYPE_ANY) {
426 g_message("Handling response: %s", txt = avahi_record_to_string(record));
429 if (handle_conflict(s, i, record, cache_flush, a)) {
430 avahi_cache_update(i->cache, record, cache_flush, a);
431 avahi_packet_scheduler_incoming_response(i->scheduler, record);
435 avahi_record_unref(record);
439 static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, struct sockaddr *sa, gint iface, gint ttl) {
449 if (!(i = avahi_interface_monitor_get_interface(s->monitor, iface, sa->sa_family))) {
450 g_warning("Recieved packet from invalid interface.");
454 g_message("new packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol);
456 if (sa->sa_family == AF_INET6) {
457 static const guint8 ipv4_in_ipv6[] = {
458 0x00, 0x00, 0x00, 0x00,
459 0x00, 0x00, 0x00, 0x00,
460 0xFF, 0xFF, 0xFF, 0xFF };
462 /* This is an IPv4 address encapsulated in IPv6, so let's ignore it. */
464 if (memcmp(((struct sockaddr_in6*) sa)->sin6_addr.s6_addr, ipv4_in_ipv6, sizeof(ipv4_in_ipv6)) == 0)
468 if (avahi_dns_packet_check_valid(p) < 0) {
469 g_warning("Recieved invalid packet.");
473 port = avahi_port_from_sockaddr(sa);
474 avahi_address_from_sockaddr(sa, &a);
476 if (avahi_dns_packet_is_query(p)) {
477 gboolean legacy_unicast = FALSE;
479 if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT) == 0 ||
480 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT) != 0) {
481 g_warning("Invalid query packet.");
485 if (port != AVAHI_MDNS_PORT) {
488 if ((avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) != 0 ||
489 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0)) {
490 g_warning("Invalid legacy unicast query packet.");
494 legacy_unicast = TRUE;
497 handle_query(s, p, i, &a, port, legacy_unicast);
499 g_message("Handled query");
502 if (port != AVAHI_MDNS_PORT) {
503 g_warning("Recieved repsonse with invalid source port %u on interface '%s.%i'", port, i->hardware->name, i->protocol);
508 g_warning("Recieved response with invalid TTL %u on interface '%s.%i'.", ttl, i->hardware->name, i->protocol);
509 if (!s->ignore_bad_ttl)
513 if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT) != 0 ||
514 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) == 0 ||
515 avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0) {
516 g_warning("Invalid response packet.");
520 handle_response(s, p, i, &a);
521 g_message("Handled response");
525 static void work(AvahiServer *s) {
526 struct sockaddr_in6 sa6;
527 struct sockaddr_in sa;
534 if (s->pollfd_ipv4.revents & G_IO_IN) {
535 if ((p = avahi_recv_dns_packet_ipv4(s->fd_ipv4, &sa, &iface, &ttl))) {
536 dispatch_packet(s, p, (struct sockaddr*) &sa, iface, ttl);
537 avahi_dns_packet_free(p);
541 if (s->pollfd_ipv6.revents & G_IO_IN) {
542 if ((p = avahi_recv_dns_packet_ipv6(s->fd_ipv6, &sa6, &iface, &ttl))) {
543 dispatch_packet(s, p, (struct sockaddr*) &sa6, iface, ttl);
544 avahi_dns_packet_free(p);
549 static gboolean prepare_func(GSource *source, gint *timeout) {
557 static gboolean check_func(GSource *source) {
561 s = *((AvahiServer**) (((guint8*) source) + sizeof(GSource)));
564 return (s->pollfd_ipv4.revents | s->pollfd_ipv6.revents) & (G_IO_IN | G_IO_HUP | G_IO_ERR);
567 static gboolean dispatch_func(GSource *source, GSourceFunc callback, gpointer user_data) {
571 s = *((AvahiServer**) (((guint8*) source) + sizeof(GSource)));
580 static void add_default_entries(AvahiServer *s) {
581 struct utsname utsname;
587 /* Fill in HINFO rr */
588 r = avahi_record_new_full(s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_HINFO);
590 r->data.hinfo.cpu = g_strdup(g_strup(utsname.machine));
591 r->data.hinfo.os = g_strdup(g_strup(utsname.sysname));
592 avahi_server_add(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE, r);
593 avahi_record_unref(r);
595 /* Add localhost entries */
596 avahi_address_parse("127.0.0.1", AF_INET, &a);
597 avahi_server_add_address(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE|AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "localhost", &a);
599 avahi_address_parse("::1", AF_INET6, &a);
600 avahi_server_add_address(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE|AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "ip6-localhost", &a);
603 AvahiServer *avahi_server_new(GMainContext *c) {
607 static GSourceFuncs source_funcs = {
616 s = g_new(AvahiServer, 1);
618 s->ignore_bad_ttl = FALSE;
619 s->need_entry_cleanup = s->need_group_cleanup = FALSE;
621 s->fd_ipv4 = avahi_open_socket_ipv4();
622 s->fd_ipv6 = avahi_open_socket_ipv6();
624 if (s->fd_ipv6 < 0 && s->fd_ipv4 < 0) {
625 g_critical("Failed to create IP sockets.\n");
631 g_message("Failed to create IPv4 socket, proceeding in IPv6 only mode");
632 else if (s->fd_ipv6 < 0)
633 g_message("Failed to create IPv6 socket, proceeding in IPv4 only mode");
636 g_main_context_ref(s->context = c);
638 s->context = g_main_context_default();
640 AVAHI_LLIST_HEAD_INIT(AvahiEntry, s->entries);
641 s->entries_by_key = g_hash_table_new((GHashFunc) avahi_key_hash, (GEqualFunc) avahi_key_equal);
642 AVAHI_LLIST_HEAD_INIT(AvahiGroup, s->groups);
644 AVAHI_LLIST_HEAD_INIT(AvahiSubscription, s->subscriptions);
645 s->subscription_hashtable = g_hash_table_new((GHashFunc) avahi_key_hash, (GEqualFunc) avahi_key_equal);
648 hn = avahi_get_host_name();
649 hn[strcspn(hn, ".")] = 0;
651 s->hostname = g_strdup_printf("%s.local.", hn);
654 s->unicast_packet = NULL;
656 s->time_event_queue = avahi_time_event_queue_new(s->context, G_PRIORITY_DEFAULT+10); /* Slightly less priority than the FDs */
657 s->monitor = avahi_interface_monitor_new(s);
658 avahi_interface_monitor_sync(s->monitor);
659 add_default_entries(s);
661 /* Prepare IO source registration */
662 s->source = g_source_new(&source_funcs, sizeof(GSource) + sizeof(AvahiServer*));
663 *((AvahiServer**) (((guint8*) s->source) + sizeof(GSource))) = s;
665 memset(&s->pollfd_ipv4, 0, sizeof(s->pollfd_ipv4));
666 s->pollfd_ipv4.fd = s->fd_ipv4;
667 s->pollfd_ipv4.events = G_IO_IN|G_IO_ERR|G_IO_HUP;
668 g_source_add_poll(s->source, &s->pollfd_ipv4);
670 memset(&s->pollfd_ipv6, 0, sizeof(s->pollfd_ipv6));
671 s->pollfd_ipv6.fd = s->fd_ipv6;
672 s->pollfd_ipv6.events = G_IO_IN|G_IO_ERR|G_IO_HUP;
673 g_source_add_poll(s->source, &s->pollfd_ipv6);
675 g_source_attach(s->source, s->context);
680 void avahi_server_free(AvahiServer* s) {
684 free_entry(s, s->entries);
686 avahi_interface_monitor_free(s->monitor);
689 free_group(s, s->groups);
691 while (s->subscriptions)
692 avahi_subscription_free(s->subscriptions);
693 g_hash_table_destroy(s->subscription_hashtable);
695 g_hash_table_destroy(s->entries_by_key);
697 avahi_time_event_queue_free(s->time_event_queue);
706 g_source_destroy(s->source);
707 g_source_unref(s->source);
708 g_main_context_unref(s->context);
710 if (s->unicast_packet)
711 avahi_dns_packet_free(s->unicast_packet);
716 void avahi_server_add(
721 AvahiEntryFlags flags,
728 g_assert(r->key->type != AVAHI_DNS_TYPE_ANY);
730 e = g_new(AvahiEntry, 1);
732 e->record = avahi_record_ref(r);
734 e->interface = interface;
735 e->protocol = protocol;
739 AVAHI_LLIST_HEAD_INIT(AvahiAnnouncement, e->announcements);
741 AVAHI_LLIST_PREPEND(AvahiEntry, entries, s->entries, e);
743 /* Insert into hash table indexed by name */
744 t = g_hash_table_lookup(s->entries_by_key, e->record->key);
745 AVAHI_LLIST_PREPEND(AvahiEntry, by_key, t, e);
746 g_hash_table_replace(s->entries_by_key, e->record->key, t);
748 /* Insert into group list */
750 AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e);
752 avahi_announce_entry(s, e);
754 const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiEntryGroup *g, void **state) {
755 AvahiEntry **e = (AvahiEntry**) state;
760 *e = g ? g->entries : s->entries;
762 while (*e && (*e)->dead)
763 *e = g ? (*e)->by_group_next : (*e)->entries_next;
768 return avahi_record_ref((*e)->record);
771 void avahi_server_dump(AvahiServer *s, FILE *f) {
776 fprintf(f, "\n;;; ZONE DUMP FOLLOWS ;;;\n");
778 for (e = s->entries; e; e = e->entries_next) {
784 t = avahi_record_to_string(e->record);
785 fprintf(f, "%s ; iface=%i proto=%i\n", t, e->interface, e->protocol);
789 avahi_dump_caches(s->monitor, f);
792 void avahi_server_add_ptr(
797 AvahiEntryFlags flags,
805 r = avahi_record_new_full(name ? name : s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR);
806 r->data.ptr.name = avahi_normalize_name(dest);
807 avahi_server_add(s, g, interface, protocol, flags, r);
808 avahi_record_unref(r);
811 void avahi_server_add_address(
816 AvahiEntryFlags flags,
824 name = name ? (n = avahi_normalize_name(name)) : s->hostname;
826 if (a->family == AF_INET) {
830 r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A);
831 r->data.a.address = a->data.ipv4;
832 avahi_server_add(s, g, interface, protocol, flags, r);
833 avahi_record_unref(r);
835 reverse = avahi_reverse_lookup_name_ipv4(&a->data.ipv4);
837 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
844 r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA);
845 r->data.aaaa.address = a->data.ipv6;
846 avahi_server_add(s, g, interface, protocol, flags, r);
847 avahi_record_unref(r);
849 reverse = avahi_reverse_lookup_name_ipv6_arpa(&a->data.ipv6);
851 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
854 reverse = avahi_reverse_lookup_name_ipv6_int(&a->data.ipv6);
856 avahi_server_add_ptr(s, g, interface, protocol, flags, reverse, name);
863 void avahi_server_add_text_strlst(
868 AvahiEntryFlags flags,
870 AvahiStringList *strlst) {
876 r = avahi_record_new_full(name ? name : s->hostname, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT);
877 r->data.txt.string_list = strlst;
878 avahi_server_add(s, g, interface, protocol, flags, r);
879 avahi_record_unref(r);
882 void avahi_server_add_text_va(
887 AvahiEntryFlags flags,
893 avahi_server_add_text_strlst(s, g, interface, protocol, flags, name, avahi_string_list_new_va(va));
896 void avahi_server_add_text(
901 AvahiEntryFlags flags,
910 avahi_server_add_text_va(s, g, interface, protocol, flags, name, va);
914 static void escape_service_name(gchar *d, guint size, const gchar *s) {
919 while (*s && size >= 2) {
920 if (*s == '.' || *s == '\\') {
936 void avahi_server_add_service_strlst(
946 AvahiStringList *strlst) {
948 gchar ptr_name[256], svc_name[256], ename[64], enum_ptr[256];
955 escape_service_name(ename, sizeof(ename), name);
958 while (domain[0] == '.')
966 snprintf(ptr_name, sizeof(ptr_name), "%s.%s", type, domain);
967 snprintf(svc_name, sizeof(svc_name), "%s.%s.%s", ename, type, domain);
969 avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, ptr_name, svc_name);
971 r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV);
972 r->data.srv.priority = 0;
973 r->data.srv.weight = 0;
974 r->data.srv.port = port;
975 r->data.srv.name = avahi_normalize_name(host);
976 avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, r);
977 avahi_record_unref(r);
979 avahi_server_add_text_strlst(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, svc_name, strlst);
981 snprintf(enum_ptr, sizeof(enum_ptr), "_services._dns-sd._udp.%s", domain);
982 avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, enum_ptr, ptr_name);
985 void avahi_server_add_service_va(
1001 avahi_server_add_service(s, g, interface, protocol, type, name, domain, host, port, avahi_string_list_new_va(va));
1004 void avahi_server_add_service(
1011 const gchar *domain,
1023 avahi_server_add_service_va(s, g, interface, protocol, type, name, domain, host, port, va);
1027 static void post_query_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, gpointer userdata) {
1028 AvahiKey *k = userdata;
1034 avahi_interface_post_query(i, k, FALSE);
1037 void avahi_server_post_query(AvahiServer *s, gint interface, guchar protocol, AvahiKey *key) {
1041 avahi_interface_monitor_walk(s->monitor, interface, protocol, post_query_callback, key);
1045 AvahiRecord *record;
1046 gboolean flush_cache;
1049 static void post_response_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, gpointer userdata) {
1050 struct tmpdata *tmpdata = userdata;
1056 avahi_interface_post_response(i, NULL, tmpdata->record, tmpdata->flush_cache, FALSE);
1059 void avahi_server_post_response(AvahiServer *s, gint interface, guchar protocol, AvahiRecord *record, gboolean flush_cache) {
1060 struct tmpdata tmpdata;
1065 tmpdata.record = record;
1066 tmpdata.flush_cache = flush_cache;
1068 avahi_interface_monitor_walk(s->monitor, interface, protocol, post_response_callback, &tmpdata);
1071 void avahi_entry_group_change_state(AvahiEntryGroup *g, AvahiEntryGroupState state) {
1077 g->callback(g->server, g, state, g->userdata);
1082 AvahiEntryGroup *avahi_entry_group_new(AvahiServer *s, AvahiEntryGroupCallback callback, gpointer userdata) {
1087 g = g_new(AvahiEntryGroup, 1);
1089 g->callback = callback;
1090 g->userdata = userdata;
1092 g->state = AVAHI_ENTRY_GROUP_UNCOMMITED;
1094 AVAHI_LLIST_HEAD_INIT(AvahiEntry, g->entries);
1096 AVAHI_LLIST_PREPEND(AvahiEntryGroup, groups, s->groups, g);
1100 void avahi_entry_group_free(AvahiEntryGroup *g) {
1102 g_assert(g->server);
1105 g->server->need_group_cleanup = TRUE;
1108 void avahi_entry_group_commit(AvahiEntryGroup *g) {
1112 if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED)
1115 avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
1116 avahi_announce_group(g->server, g);
1117 avahi_entry_group_check_probed(g, FALSE);
1120 gboolean avahi_entry_commited(AvahiEntry *e) {
1125 e->group->state == AVAHI_ENTRY_GROUP_REGISTERING ||
1126 e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED;
1129 AvahiEntryGroupState avahi_entry_group_get_state(AvahiEntryGroup *g) {