diff options
| -rw-r--r-- | avahi-core/server.c | 298 |
1 files changed, 151 insertions, 147 deletions
diff --git a/avahi-core/server.c b/avahi-core/server.c index 453db09..c4980af 100644 --- a/avahi-core/server.c +++ b/avahi-core/server.c @@ -2,17 +2,17 @@ /*** This file is part of avahi. - + avahi 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. - + avahi 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 avahi; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 @@ -59,7 +59,7 @@ static void enum_aux_records(AvahiServer *s, AvahiInterface *i, const char *name if (type == AVAHI_DNS_TYPE_ANY) { AvahiEntry *e; - + for (e = s->entries; e; e = e->entries_next) if (!e->dead && avahi_entry_is_registered(s, e, i) && @@ -70,14 +70,14 @@ static void enum_aux_records(AvahiServer *s, AvahiInterface *i, const char *name } else { AvahiEntry *e; AvahiKey *k; - + if (!(k = avahi_key_new(name, AVAHI_DNS_CLASS_IN, type))) return; /** OOM */ - + for (e = avahi_hashmap_lookup(s->entries_by_key, k); e; e = e->by_key_next) - if (!e->dead && avahi_entry_is_registered(s, e, i)) + if (!e->dead && avahi_entry_is_registered(s, e, i)) callback(s, e->record, e->flags & AVAHI_PUBLISH_UNIQUE, userdata); - + avahi_key_unref(k); } } @@ -89,7 +89,7 @@ void avahi_server_enumerate_aux_records(AvahiServer *s, AvahiInterface *i, Avahi assert(callback); /* Call the specified callback far all records referenced by the one specified in *r */ - + if (r->key->clazz == AVAHI_DNS_CLASS_IN) { if (r->key->type == AVAHI_DNS_TYPE_PTR) { enum_aux_records(s, i, r->data.ptr.name, AVAHI_DNS_TYPE_SRV, callback, userdata); @@ -121,7 +121,7 @@ void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiEntry *e; /* Handle ANY query */ - + for (e = s->entries; e; e = e->entries_next) if (!e->dead && avahi_key_pattern_match(k, e->record->key) && avahi_entry_is_registered(s, e, i)) avahi_server_prepare_response(s, i, e, unicast_response, 0); @@ -130,7 +130,7 @@ void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiEntry *e; /* Handle all other queries */ - + for (e = avahi_hashmap_lookup(s->entries_by_key, k); e; e = e->by_key_next) if (!e->dead && avahi_entry_is_registered(s, e, i)) avahi_server_prepare_response(s, i, e, unicast_response, 0); @@ -145,7 +145,7 @@ void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, if (!(cname_key = avahi_key_new(k->name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_CNAME))) return; - + avahi_server_prepare_matching_responses(s, i, cname_key, unicast_response); avahi_key_unref(cname_key); } @@ -160,11 +160,11 @@ static void withdraw_entry(AvahiServer *s, AvahiEntry *e) { if (e->dead) return; - + if (e->group) { AvahiEntry *k; - - for (k = e->group->entries; k; k = k->by_group_next) + + for (k = e->group->entries; k; k = k->by_group_next) if (!k->dead) { avahi_goodbye_entry(s, k, 0, 1); k->dead = 1; @@ -183,12 +183,12 @@ static void withdraw_entry(AvahiServer *s, AvahiEntry *e) { static void withdraw_rrset(AvahiServer *s, AvahiKey *key) { AvahiEntry *e; - + assert(s); assert(key); /* Withdraw an entry RRSset */ - + for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next) withdraw_entry(s, e); } @@ -196,25 +196,25 @@ static void withdraw_rrset(AvahiServer *s, AvahiKey *key) { static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i) { AvahiEntry *e, *n; int ours = 0, won = 0, lost = 0; - + assert(s); assert(record); assert(i); /* Handle incoming probes and check if they conflict our own probes */ - + for (e = avahi_hashmap_lookup(s->entries_by_key, record->key); e; e = n) { int cmp; n = e->by_key_next; if (e->dead) continue; - + if ((cmp = avahi_record_lexicographical_compare(e->record, record)) == 0) { ours = 1; break; } else { - + if (avahi_entry_is_probing(s, e, i)) { if (cmp > 0) won = 1; @@ -226,14 +226,14 @@ static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface * if (!ours) { char *t = avahi_record_to_string(record); - + if (won) avahi_log_debug("Received conflicting probe [%s]. Local host won.", t); else if (lost) { avahi_log_debug("Received conflicting probe [%s]. Local host lost. Withdrawing.", t); withdraw_rrset(s, record->key); } - + avahi_free(t); } } @@ -241,13 +241,13 @@ static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface * static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *record, int unique) { int valid = 1, ours = 0, conflict = 0, withdraw_immediately = 0; AvahiEntry *e, *n, *conflicting_entry = NULL; - + assert(s); assert(i); assert(record); /* Check whether an incoming record conflicts with one of our own */ - + for (e = avahi_hashmap_lookup(s->entries_by_key, record->key); e; e = n) { n = e->by_key_next; @@ -261,7 +261,7 @@ static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *recor char *t; /* Refresh */ - t = avahi_record_to_string(record); + t = avahi_record_to_string(record); avahi_log_debug("Received goodbye record for one of our records [%s]. Refreshing.", t); avahi_server_prepare_matching_responses(s, i, e->record->key, 0); @@ -273,36 +273,36 @@ static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *recor /* If the goodybe packet doesn't match one of our own RRs, we simply ignore it. */ continue; } - + if (!(e->flags & AVAHI_PUBLISH_UNIQUE) && !unique) continue; /* Either our entry or the other is intended to be unique, so let's check */ - + if (avahi_record_equal_no_ttl(e->record, record)) { ours = 1; /* We have an identical record, so this is no conflict */ - + /* Check wheter there is a TTL conflict */ if (record->ttl <= e->record->ttl/2 && avahi_entry_is_registered(s, e, i)) { char *t; /* Refresh */ - t = avahi_record_to_string(record); - + t = avahi_record_to_string(record); + avahi_log_debug("Received record with bad TTL [%s]. Refreshing.", t); avahi_server_prepare_matching_responses(s, i, e->record->key, 0); valid = 0; - + avahi_free(t); } - + /* There's no need to check the other entries of this RRset */ break; } else { - + if (avahi_entry_is_registered(s, e, i)) { - + /* A conflict => we have to return to probe mode */ conflict = 1; conflicting_entry = e; @@ -320,11 +320,11 @@ static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *recor if (!ours && conflict) { char *t; - + valid = 0; - t = avahi_record_to_string(record); - + t = avahi_record_to_string(record); + if (withdraw_immediately) { avahi_log_debug("Received conflicting record [%s] with local record to be. Withdrawing.", t); withdraw_rrset(s, record->key); @@ -349,7 +349,7 @@ static void append_aux_callback(AvahiServer *s, AvahiRecord *r, int flush_cache, assert(s); assert(r); assert(unicast_response); - + avahi_record_list_push(s->record_list, r, flush_cache, *unicast_response, 1); } @@ -372,11 +372,11 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP if (!(reply = avahi_dns_packet_new_reply(p, 512 + AVAHI_DNS_PACKET_EXTRA_SIZE /* unicast DNS maximum packet size is 512 */ , 1, 1))) return; /* OOM */ - + while ((r = avahi_record_list_next(s->record_list, NULL, NULL, NULL))) { append_aux_records_to_list(s, i, r, 0); - + if (avahi_dns_packet_append_record(reply, r, 0, 10)) avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT); else { @@ -402,7 +402,7 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP immediately, because known answer suppression records might be contained in later packets */ int tc = p && !!(avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_FLAGS) & AVAHI_DNS_FLAG_TC); - + while ((r = avahi_record_list_next(s->record_list, &flush_cache, &unicast_response, &auxiliary))) { int im = immediately; @@ -411,7 +411,7 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP * unique entry AND it is not in reply to a truncated * packet AND it is not an auxiliary record AND all other * responses for this record are unique too. */ - + if (flush_cache && !tc && !auxiliary && avahi_record_list_all_flush_cache(s->record_list)) im = 1; @@ -422,21 +422,21 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP * case. Therefore we prepare such a response */ append_aux_records_to_list(s, i, r, unicast_response); - + for (;;) { - + if (!reply) { assert(p); if (!(reply = avahi_dns_packet_new_reply(p, i->hardware->mtu, 0, 0))) break; /* OOM */ } - + if (avahi_dns_packet_append_record(reply, r, flush_cache, 0)) { /* Appending this record succeeded, so incremeant * the specific header field, and return to the caller */ - + avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT); break; } @@ -456,7 +456,7 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP /* Appending this record succeeded, so incremeant * the specific header field, and return to the caller */ - + avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT); break; @@ -465,7 +465,7 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP /* We completely fucked up, there's * nothing we can do. The RR just doesn't * fit in. Let's ignore it. */ - + char *t; avahi_dns_packet_free(reply); reply = NULL; @@ -487,7 +487,7 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP } if (reply) { - if (avahi_dns_packet_get_field(reply, AVAHI_DNS_FIELD_ANCOUNT) != 0) + if (avahi_dns_packet_get_field(reply, AVAHI_DNS_FIELD_ANCOUNT) != 0) avahi_interface_send_packet_unicast(i, reply, a, port); avahi_dns_packet_free(reply); } @@ -498,7 +498,7 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP static void reflect_response(AvahiServer *s, AvahiInterface *i, AvahiRecord *r, int flush_cache) { AvahiInterface *j; - + assert(s); assert(i); assert(r); @@ -525,7 +525,7 @@ static void* reflect_cache_walk_callback(AvahiCache *c, AvahiKey *pattern, Avahi static void reflect_query(AvahiServer *s, AvahiInterface *i, AvahiKey *k) { AvahiInterface *j; - + assert(s); assert(i); assert(k); @@ -547,7 +547,7 @@ static void reflect_query(AvahiServer *s, AvahiInterface *i, AvahiKey *k) { static void reflect_probe(AvahiServer *s, AvahiInterface *i, AvahiRecord *r) { AvahiInterface *j; - + assert(s); assert(i); assert(r); @@ -563,7 +563,7 @@ static void reflect_probe(AvahiServer *s, AvahiInterface *i, AvahiRecord *r) { static void handle_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, uint16_t port, int legacy_unicast, int from_local_iface) { size_t n; int is_probe; - + assert(s); assert(p); assert(i); @@ -572,7 +572,7 @@ static void handle_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterfac assert(avahi_record_list_is_empty(s->record_list)); is_probe = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) > 0; - + /* Handle the questions */ for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT); n > 0; n --) { AvahiKey *key; @@ -594,7 +594,7 @@ static void handle_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterfac /* Allow our own queries to be suppressed by incoming * queries only when they do not include known answers */ avahi_query_scheduler_incoming(i->query_scheduler, key); - + avahi_server_prepare_matching_responses(s, i, key, unicast_response); avahi_key_unref(key); } @@ -605,35 +605,35 @@ static void handle_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterfac for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT); n > 0; n --) { AvahiRecord *record; int unique = 0; - + if (!(record = avahi_dns_packet_consume_record(p, &unique))) { avahi_log_warn(__FILE__": Packet too short or invalid while reading known answer record. (Maybe a UTF-8 problem?)"); goto fail; } - + avahi_response_scheduler_suppress(i->response_scheduler, record, a); avahi_record_list_drop(s->record_list, record); avahi_cache_stop_poof(i->cache, record, a); - + avahi_record_unref(record); } - + /* Probe record */ for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT); n > 0; n --) { AvahiRecord *record; int unique = 0; - + if (!(record = avahi_dns_packet_consume_record(p, &unique))) { avahi_log_warn(__FILE__": Packet too short or invalid while reading probe record. (Maybe a UTF-8 problem?)"); goto fail; } - + if (!avahi_key_is_pattern(record->key)) { if (!from_local_iface) reflect_probe(s, i, record); incoming_probe(s, record, i); } - + avahi_record_unref(record); } } @@ -642,14 +642,14 @@ static void handle_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterfac avahi_server_generate_response(s, i, p, a, port, legacy_unicast, is_probe); return; - + fail: avahi_record_list_flush(s->record_list); } static void handle_response_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, int from_local_iface) { unsigned n; - + assert(s); assert(p); assert(i); @@ -660,7 +660,7 @@ static void handle_response_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInter AvahiRecord *record; int cache_flush = 0; /* char *txt; */ - + if (!(record = avahi_dns_packet_consume_record(p, &cache_flush))) { avahi_log_warn(__FILE__": Packet too short or invalid while reading response record. (Maybe a UTF-8 problem?)"); break; @@ -675,7 +675,7 @@ static void handle_response_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInter avahi_response_scheduler_incoming(i->response_scheduler, record, cache_flush); } } - + avahi_record_unref(record); } @@ -689,7 +689,7 @@ static void handle_response_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInter static AvahiLegacyUnicastReflectSlot* allocate_slot(AvahiServer *s) { unsigned n, idx = (unsigned) -1; AvahiLegacyUnicastReflectSlot *slot; - + assert(s); if (!s->legacy_unicast_reflect_slots) @@ -697,7 +697,7 @@ static AvahiLegacyUnicastReflectSlot* allocate_slot(AvahiServer *s) { for (n = 0; n < AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX; n++, s->legacy_unicast_reflect_id++) { idx = s->legacy_unicast_reflect_id % AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX; - + if (!s->legacy_unicast_reflect_slots[idx]) break; } @@ -711,7 +711,7 @@ static AvahiLegacyUnicastReflectSlot* allocate_slot(AvahiServer *s) { s->legacy_unicast_reflect_slots[idx] = slot; slot->id = s->legacy_unicast_reflect_id++; slot->server = s; - + return slot; } @@ -726,7 +726,7 @@ static void deallocate_slot(AvahiServer *s, AvahiLegacyUnicastReflectSlot *slot) assert(s->legacy_unicast_reflect_slots[idx] == slot); avahi_time_event_free(slot->time_event); - + avahi_free(slot); s->legacy_unicast_reflect_slots[idx] = NULL; } @@ -748,12 +748,12 @@ static void free_slots(AvahiServer *s) { static AvahiLegacyUnicastReflectSlot* find_slot(AvahiServer *s, uint16_t id) { unsigned idx; - + assert(s); if (!s->legacy_unicast_reflect_slots) return NULL; - + idx = id % AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX; if (!s->legacy_unicast_reflect_slots[idx] || s->legacy_unicast_reflect_slots[idx]->id != id) @@ -782,7 +782,7 @@ static void reflect_legacy_unicast_query_packet(AvahiServer *s, AvahiDnsPacket * assert(a); assert(port > 0); assert(i->protocol == a->proto); - + if (!s->config.enable_reflector) return; @@ -810,7 +810,7 @@ static void reflect_legacy_unicast_query_packet(AvahiServer *s, AvahiDnsPacket * /* Patch the packet with our new locally generatet id */ avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->id); - + for (j = s->monitor->interfaces; j; j = j->interface_next) if (j->announcing && j != i && @@ -833,14 +833,14 @@ static int originates_from_local_legacy_unicast_socket(AvahiServer *s, const Ava if (!s->config.enable_reflector) return 0; - + if (!avahi_address_is_local(s->monitor, address)) return 0; - + if (address->proto == AVAHI_PROTO_INET && s->fd_legacy_unicast_ipv4 >= 0) { struct sockaddr_in lsa; socklen_t l = sizeof(lsa); - + if (getsockname(s->fd_legacy_unicast_ipv4, (struct sockaddr*) &lsa, &l) != 0) avahi_log_warn("getsockname(): %s", strerror(errno)); else @@ -884,7 +884,7 @@ static int originates_from_local_iface(AvahiServer *s, AvahiIfIndex iface, const static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const AvahiAddress *src_address, uint16_t port, const AvahiAddress *dst_address, AvahiIfIndex iface, int ttl) { AvahiInterface *i; int from_local_iface = 0; - + assert(s); assert(p); assert(src_address); @@ -931,36 +931,40 @@ static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const AvahiAddres avahi_log_warn("Invalid legacy unicast query packet."); return; } - + legacy_unicast = 1; } if (legacy_unicast) reflect_legacy_unicast_query_packet(s, p, i, src_address, port); - + handle_query_packet(s, p, i, src_address, port, legacy_unicast, from_local_iface); - + } else { + char t[AVAHI_ADDRESS_STR_MAX]; + if (port != AVAHI_MDNS_PORT) { - avahi_log_warn("Received response with invalid source port %u on interface '%s.%i'", port, i->hardware->name, i->protocol); + avahi_log_warn("Received response from host %s with invalid source port %u on interface '%s.%i'", avahi_address_snprint(t, sizeof(t), src_address), port, i->hardware->name, i->protocol); return; } if (ttl != 255 && s->config.check_response_ttl) { - avahi_log_warn("Received response with invalid TTL %u on interface '%s.%i'.", ttl, i->hardware->name, i->protocol); + avahi_log_warn("Received response from host %s with invalid TTL %u on interface '%s.%i'.", avahi_address_snprint(t, sizeof(t), src_address), ttl, i->hardware->name, i->protocol); return; } if (!is_mdns_mcast_address(dst_address) && !avahi_interface_address_on_link(i, src_address)) { - avahi_log_warn("Received non-local response on interface '%s.%i'.", i->hardware->name, i->protocol); + + avahi_log_warn("Received non-local response from host %s on interface '%s.%i'.", avahi_address_snprint(t, sizeof(t), src_address), i->hardware->name, i->protocol); return; } - + if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT) != 0 || avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) == 0 || avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0) { - avahi_log_warn("Invalid response packet."); + + avahi_log_warn("Invalid response packet from host %s.", avahi_address_snprint(t, sizeof(t), src_address)); return; } @@ -971,7 +975,7 @@ static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const AvahiAddres static void dispatch_legacy_unicast_packet(AvahiServer *s, AvahiDnsPacket *p) { AvahiInterface *j; AvahiLegacyUnicastReflectSlot *slot; - + assert(s); assert(p); @@ -1001,7 +1005,7 @@ static void dispatch_legacy_unicast_packet(AvahiServer *s, AvahiDnsPacket *p) { static void cleanup_dead(AvahiServer *s) { assert(s); - + avahi_cleanup_dead_entries(s); avahi_browser_cleanup(s); } @@ -1017,7 +1021,7 @@ static void mcast_socket_event(AvahiWatch *w, int fd, AvahiWatchEvent events, vo assert(w); assert(fd >= 0); assert(events & AVAHI_WATCH_IN); - + if (fd == s->fd_ipv4) { dest.proto = src.proto = AVAHI_PROTO_INET; p = avahi_recv_dns_packet_ipv4(s->fd_ipv4, &src.data.ipv4, &port, &dest.data.ipv4, &iface, &ttl); @@ -1026,11 +1030,11 @@ static void mcast_socket_event(AvahiWatch *w, int fd, AvahiWatchEvent events, vo dest.proto = src.proto = AVAHI_PROTO_INET6; p = avahi_recv_dns_packet_ipv6(s->fd_ipv6, &src.data.ipv6, &port, &dest.data.ipv6, &iface, &ttl); } - + if (p) { - if (iface == AVAHI_IF_UNSPEC) + if (iface == AVAHI_IF_UNSPEC) iface = avahi_find_interface_for_address(s->monitor, &dest); - + if (iface != AVAHI_IF_UNSPEC) dispatch_packet(s, p, &src, port, &dest, iface, ttl); else @@ -1049,7 +1053,7 @@ static void legacy_unicast_socket_event(AvahiWatch *w, int fd, AvahiWatchEvent e assert(w); assert(fd >= 0); assert(events & AVAHI_WATCH_IN); - + if (fd == s->fd_legacy_unicast_ipv4) p = avahi_recv_dns_packet_ipv4(s->fd_legacy_unicast_ipv4, NULL, NULL, NULL, NULL, NULL); else { @@ -1070,11 +1074,11 @@ static void server_set_state(AvahiServer *s, AvahiServerState state) { if (s->state == state) return; - + s->state = state; avahi_interface_monitor_update_rrs(s->monitor, 0); - + if (s->callback) s->callback(s, state, s->userdata); } @@ -1094,7 +1098,7 @@ static void withdraw_host_rrs(AvahiServer *s) { void avahi_server_decrease_host_rr_pending(AvahiServer *s) { assert(s); - + assert(s->n_host_rr_pending > 0); if (--s->n_host_rr_pending == 0) @@ -1108,12 +1112,12 @@ void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, Ava if (state == AVAHI_ENTRY_GROUP_REGISTERING && s->state == AVAHI_SERVER_REGISTERING) s->n_host_rr_pending ++; - + else if (state == AVAHI_ENTRY_GROUP_COLLISION && (s->state == AVAHI_SERVER_REGISTERING || s->state == AVAHI_SERVER_RUNNING)) { withdraw_host_rrs(s); server_set_state(s, AVAHI_SERVER_COLLISION); - + } else if (state == AVAHI_ENTRY_GROUP_ESTABLISHED && s->state == AVAHI_SERVER_REGISTERING) avahi_server_decrease_host_rr_pending(s); @@ -1122,9 +1126,9 @@ void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, Ava static void register_hinfo(AvahiServer *s) { struct utsname utsname; AvahiRecord *r; - + assert(s); - + if (!s->config.publish_hinfo) return; @@ -1137,19 +1141,19 @@ static void register_hinfo(AvahiServer *s) { avahi_log_warn("Failed to create HINFO entry group: %s", avahi_strerror(s->error)); return; } - + /* Fill in HINFO rr */ if ((r = avahi_record_new_full(s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_HINFO, AVAHI_DEFAULT_TTL_HOST_NAME))) { if (uname(&utsname) < 0) avahi_log_warn("uname() failed: %s\n", avahi_strerror(errno)); else { - + r->data.hinfo.cpu = avahi_strdup(avahi_strup(utsname.machine)); r->data.hinfo.os = avahi_strdup(avahi_strup(utsname.sysname)); - + avahi_log_info("Registering HINFO record with values '%s'/'%s'.", r->data.hinfo.cpu, r->data.hinfo.os); - + if (avahi_server_add(s, s->hinfo_entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_PUBLISH_UNIQUE, r) < 0) { avahi_log_warn("Failed to add HINFO RR: %s", avahi_strerror(s->error)); return; @@ -1167,7 +1171,7 @@ static void register_hinfo(AvahiServer *s) { static void register_localhost(AvahiServer *s) { AvahiAddress a; assert(s); - + /* Add localhost entries */ avahi_address_parse("127.0.0.1", AVAHI_PROTO_INET, &a); avahi_server_add_address(s, NULL, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_PUBLISH_NO_PROBE|AVAHI_PUBLISH_NO_ANNOUNCE, "localhost", &a); @@ -1194,7 +1198,7 @@ static void register_browse_domain(AvahiServer *s) { avahi_log_warn("Failed to create browse domain entry group: %s", avahi_strerror(s->error)); return; } - + if (avahi_server_add_ptr(s, s->browse_domain_entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, AVAHI_DEFAULT_TTL, "b._dns-sd._udp.local", s->domain_name) < 0) { avahi_log_warn("Failed to add browse domain RR: %s", avahi_strerror(s->error)); return; @@ -1215,14 +1219,14 @@ static void register_stuff(AvahiServer *s) { avahi_interface_monitor_update_rrs(s->monitor, 0); s->n_host_rr_pending --; - + if (s->n_host_rr_pending == 0) server_set_state(s, AVAHI_SERVER_RUNNING); } static void update_fqdn(AvahiServer *s) { char *n; - + assert(s); assert(s->host_name); assert(s->domain_name); @@ -1237,7 +1241,7 @@ static void update_fqdn(AvahiServer *s) { int avahi_server_set_host_name(AvahiServer *s, const char *host_name) { char *hn = NULL; assert(s); - + AVAHI_CHECK_VALIDITY(s, !host_name || avahi_is_valid_host_name(host_name), AVAHI_ERR_INVALID_HOST_NAME); if (!host_name) { @@ -1250,12 +1254,12 @@ int avahi_server_set_host_name(AvahiServer *s, const char *host_name) { avahi_free(hn); return avahi_server_set_errno(s, AVAHI_ERR_NO_CHANGE); } - + withdraw_host_rrs(s); avahi_free(s->host_name); s->host_name = hn ? hn : avahi_strdup(host_name); - + update_fqdn(s); register_stuff(s); @@ -1272,7 +1276,7 @@ int avahi_server_set_domain_name(AvahiServer *s, const char *domain_name) { dn = avahi_strdup("local"); domain_name = dn; } - + if (avahi_domain_equal(s->domain_name, domain_name)) { avahi_free(dn); return avahi_server_set_errno(s, AVAHI_ERR_NO_CHANGE); @@ -1297,10 +1301,10 @@ static int valid_server_config(const AvahiServerConfig *sc) { if (sc->n_wide_area_servers > AVAHI_WIDE_AREA_SERVERS_MAX) return AVAHI_ERR_INVALID_CONFIG; - + if (sc->host_name && !avahi_is_valid_host_name(sc->host_name)) return AVAHI_ERR_INVALID_HOST_NAME; - + if (sc->domain_name && !avahi_is_valid_domain_name(sc->domain_name)) return AVAHI_ERR_INVALID_DOMAIN_NAME; @@ -1313,10 +1317,10 @@ static int valid_server_config(const AvahiServerConfig *sc) { static int setup_sockets(AvahiServer *s) { assert(s); - + s->fd_ipv4 = s->config.use_ipv4 ? avahi_open_socket_ipv4(s->config.disallow_other_stacks) : -1; s->fd_ipv6 = s->config.use_ipv6 ? avahi_open_socket_ipv6(s->config.disallow_other_stacks) : -1; - + if (s->fd_ipv6 < 0 && s->fd_ipv4 < 0) return AVAHI_ERR_NO_NETWORK; @@ -1327,35 +1331,35 @@ static int setup_sockets(AvahiServer *s) { s->fd_legacy_unicast_ipv4 = s->fd_ipv4 >= 0 && s->config.enable_reflector ? avahi_open_unicast_socket_ipv4() : -1; s->fd_legacy_unicast_ipv6 = s->fd_ipv6 >= 0 && s->config.enable_reflector ? avahi_open_unicast_socket_ipv6() : -1; - + s->watch_ipv4 = s->watch_ipv6 = s->watch_legacy_unicast_ipv4 = s->watch_legacy_unicast_ipv6 = NULL; - + if (s->fd_ipv4 >= 0) s->watch_ipv4 = s->poll_api->watch_new(s->poll_api, s->fd_ipv4, AVAHI_WATCH_IN, mcast_socket_event, s); if (s->fd_ipv6 >= 0) s->watch_ipv6 = s->poll_api->watch_new(s->poll_api, s->fd_ipv6, AVAHI_WATCH_IN, mcast_socket_event, s); - + if (s->fd_legacy_unicast_ipv4 >= 0) s->watch_legacy_unicast_ipv4 = s->poll_api->watch_new(s->poll_api, s->fd_legacy_unicast_ipv4, AVAHI_WATCH_IN, legacy_unicast_socket_event, s); if (s->fd_legacy_unicast_ipv6 >= 0) s->watch_legacy_unicast_ipv6 = s->poll_api->watch_new(s->poll_api, s->fd_legacy_unicast_ipv6, AVAHI_WATCH_IN, legacy_unicast_socket_event, s); - + return 0; } AvahiServer *avahi_server_new(const AvahiPoll *poll_api, const AvahiServerConfig *sc, AvahiServerCallback callback, void* userdata, int *error) { AvahiServer *s; int e; - + if (sc && (e = valid_server_config(sc)) < 0) { if (error) *error = e; return NULL; } - + if (!(s = avahi_new(AvahiServer, 1))) { if (error) *error = AVAHI_ERR_NO_MEMORY; @@ -1376,10 +1380,10 @@ AvahiServer *avahi_server_new(const AvahiPoll *poll_api, const AvahiServerConfig avahi_server_config_free(&s->config); avahi_free(s); - + return NULL; } - + s->n_host_rr_pending = 0; s->need_entry_cleanup = 0; s->need_group_cleanup = 0; @@ -1412,7 +1416,7 @@ AvahiServer *avahi_server_new(const AvahiPoll *poll_api, const AvahiServerConfig s->legacy_unicast_reflect_id = 0; s->record_list = avahi_record_list_new(); - + /* Get host name */ s->host_name = s->config.host_name ? avahi_normalize_name_strdup(s->config.host_name) : avahi_get_host_name_strdup(); s->host_name[strcspn(s->host_name, ".")] = 0; @@ -1431,13 +1435,13 @@ AvahiServer *avahi_server_new(const AvahiPoll *poll_api, const AvahiServerConfig s->wide_area_lookup_engine = NULL; s->multicast_lookup_engine = avahi_multicast_lookup_engine_new(s); - + s->monitor = avahi_interface_monitor_new(s); avahi_interface_monitor_sync(s->monitor); register_localhost(s); register_stuff(s); - + return s; } @@ -1462,7 +1466,7 @@ void avahi_server_free(AvahiServer* s) { avahi_s_service_resolver_free(s->service_resolvers); while (s->record_browsers) avahi_s_record_browser_destroy(s->record_browsers); - + /* Remove all locally rgeistered stuff */ while(s->entries) @@ -1484,33 +1488,33 @@ void avahi_server_free(AvahiServer* s) { avahi_multicast_lookup_engine_free(s->multicast_lookup_engine); avahi_time_event_queue_free(s->time_event_queue); - + /* Free watches */ - + if (s->watch_ipv4) s->poll_api->watch_free(s->watch_ipv4); if (s->watch_ipv6) s->poll_api->watch_free(s->watch_ipv6); - + if (s->watch_legacy_unicast_ipv4) s->poll_api->watch_free(s->watch_legacy_unicast_ipv4); if (s->watch_legacy_unicast_ipv6) s->poll_api->watch_free(s->watch_legacy_unicast_ipv6); /* Free sockets */ - + if (s->fd_ipv4 >= 0) close(s->fd_ipv4); if (s->fd_ipv6 >= 0) close(s->fd_ipv6); - + if (s->fd_legacy_unicast_ipv4 >= 0) close(s->fd_legacy_unicast_ipv4); if (s->fd_legacy_unicast_ipv6 >= 0) close(s->fd_legacy_unicast_ipv6); - + /* Free other stuff */ - + avahi_free(s->host_name); avahi_free(s->domain_name); avahi_free(s->host_name_fqdn); @@ -1581,7 +1585,7 @@ AvahiServerConfig* avahi_server_config_init(AvahiServerConfig *c) { c->allow_point_to_point = 0; c->publish_aaaa_on_ipv4 = 1; c->publish_a_on_ipv6 = 0; - + return c; } @@ -1614,7 +1618,7 @@ AvahiServerConfig* avahi_server_config_copy(AvahiServerConfig *ret, const AvahiS avahi_free(d); return NULL; } - + *ret = *c; ret->host_name = h; ret->domain_name = d; @@ -1625,7 +1629,7 @@ AvahiServerConfig* avahi_server_config_copy(AvahiServerConfig *ret, const AvahiS int avahi_server_errno(AvahiServer *s) { assert(s); - + return s->error; } @@ -1644,7 +1648,7 @@ uint32_t avahi_server_get_local_service_cookie(AvahiServer *s) { static AvahiEntry *find_entry(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key) { AvahiEntry *e; - + assert(s); assert(key); @@ -1664,7 +1668,7 @@ int avahi_server_get_group_of_service(AvahiServer *s, AvahiIfIndex interface, Av AvahiEntry *e; int ret; char n[AVAHI_DOMAIN_NAME_MAX]; - + assert(s); assert(name); assert(type); @@ -1678,7 +1682,7 @@ int avahi_server_get_group_of_service(AvahiServer *s, AvahiIfIndex interface, Av if ((ret = avahi_service_name_join(n, sizeof(n), name, type, domain) < 0)) return avahi_server_set_errno(s, ret); - + if (!(key = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV))) return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); @@ -1702,7 +1706,7 @@ int avahi_server_is_service_local(AvahiServer *s, AvahiIfIndex interface, AvahiP if (!s->host_name_fqdn) return 0; - + if (!(key = avahi_key_new(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV))) return 0; @@ -1711,7 +1715,7 @@ int avahi_server_is_service_local(AvahiServer *s, AvahiIfIndex interface, AvahiP if (!e) return 0; - + return avahi_domain_equal(s->host_name_fqdn, e->record->data.srv.name); } @@ -1720,7 +1724,7 @@ int avahi_server_is_record_local(AvahiServer *s, AvahiIfIndex interface, AvahiPr assert(s); assert(record); - + for (e = avahi_hashmap_lookup(s->entries_by_key, record->key); e; e = e->by_key_next) if ((e->interface == interface || e->interface <= 0 || interface <= 0) && @@ -1752,13 +1756,13 @@ const AvahiServerConfig* avahi_server_get_config(AvahiServer *s) { /** Set the browsing domains */ int avahi_server_set_browse_domains(AvahiServer *s, AvahiStringList *domains) { AvahiStringList *l; - + assert(s); for (l = s->config.browse_domains; l; l = l->next) if (!avahi_is_valid_domain_name((char*) l->text)) return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME); - + avahi_string_list_free(s->config.browse_domains); s->config.browse_domains = avahi_string_list_copy(domains); |