X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=avahi-core%2Fserver.c;h=7b0a56eec5752275a60ca90a693d9e73f2ae6e5c;hb=6efe2615e04c6ef664fa9d49b013e261ba1e6e66;hp=f23ef392e637b0fb602f115c484d52d157e4cd81;hpb=7284ae273629e948d4aaef6d05047b31de5885ef;p=catta diff --git a/avahi-core/server.c b/avahi-core/server.c index f23ef39..7b0a56e 100644 --- a/avahi-core/server.c +++ b/avahi-core/server.c @@ -38,110 +38,46 @@ #include #include -#include "server.h" +#include "internal.h" #include "iface.h" #include "socket.h" #include "browse.h" #include "log.h" #include "util.h" - -#define AVAHI_RR_HOLDOFF_MSEC 1000 -#define AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT 60000 -#define AVAHI_RR_RATE_LIMIT_COUNT 15 - -static void free_entry(AvahiServer*s, AvahiEntry *e) { - AvahiEntry *t; - - assert(s); - assert(e); - - avahi_goodbye_entry(s, e, 1); - - /* Remove from linked list */ - AVAHI_LLIST_REMOVE(AvahiEntry, entries, s->entries, e); - - /* Remove from hash table indexed by name */ - t = avahi_hashmap_lookup(s->entries_by_key, e->record->key); - AVAHI_LLIST_REMOVE(AvahiEntry, by_key, t, e); - if (t) - avahi_hashmap_replace(s->entries_by_key, t->record->key, t); - else - avahi_hashmap_remove(s->entries_by_key, e->record->key); - - /* Remove from associated group */ - if (e->group) - AVAHI_LLIST_REMOVE(AvahiEntry, by_group, e->group->entries, e); - - avahi_record_unref(e->record); - avahi_free(e); -} - -static void free_group(AvahiServer *s, AvahiSEntryGroup *g) { - assert(s); - assert(g); - - while (g->entries) - free_entry(s, g->entries); - - if (g->register_time_event) - avahi_time_event_free(g->register_time_event); - - AVAHI_LLIST_REMOVE(AvahiSEntryGroup, groups, s->groups, g); - avahi_free(g); -} - -static void cleanup_dead(AvahiServer *s) { - assert(s); - - if (s->need_group_cleanup) { - AvahiSEntryGroup *g, *next; - - for (g = s->groups; g; g = next) { - next = g->groups_next; - - if (g->dead) - free_group(s, g); - } - - s->need_group_cleanup = 0; - } - - if (s->need_entry_cleanup) { - AvahiEntry *e, *next; - - for (e = s->entries; e; e = next) { - next = e->entries_next; - - if (e->dead) - free_entry(s, e); - } - - s->need_entry_cleanup = 0; - } - - if (s->need_browser_cleanup) - avahi_browser_cleanup(s); -} +#include "dns-srv-rr.h" +#include "addr-util.h" +#include "domain-util.h" +#include "rr-util.h" static void enum_aux_records(AvahiServer *s, AvahiInterface *i, const char *name, uint16_t type, void (*callback)(AvahiServer *s, AvahiRecord *r, int flush_cache, void* userdata), void* userdata) { - AvahiKey *k; - AvahiEntry *e; - assert(s); assert(i); assert(name); assert(callback); - assert(type != AVAHI_DNS_TYPE_ANY); - - 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)) - callback(s, e->record, e->flags & AVAHI_PUBLISH_UNIQUE, userdata); + 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) && + e->record->key->clazz == AVAHI_DNS_CLASS_IN && + avahi_domain_equal(name, e->record->key->name)) + callback(s, e->record, e->flags & AVAHI_PUBLISH_UNIQUE, userdata); - avahi_key_unref(k); + } 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)) + callback(s, e->record, e->flags & AVAHI_PUBLISH_UNIQUE, userdata); + + avahi_key_unref(k); + } } void avahi_server_enumerate_aux_records(AvahiServer *s, AvahiInterface *i, AvahiRecord *r, void (*callback)(AvahiServer *s, AvahiRecord *r, int flush_cache, void* userdata), void* userdata) { @@ -149,6 +85,8 @@ void avahi_server_enumerate_aux_records(AvahiServer *s, AvahiInterface *i, Avahi assert(i); assert(r); 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) { @@ -157,7 +95,8 @@ void avahi_server_enumerate_aux_records(AvahiServer *s, AvahiInterface *i, Avahi } else if (r->key->type == AVAHI_DNS_TYPE_SRV) { enum_aux_records(s, i, r->data.srv.name, AVAHI_DNS_TYPE_A, callback, userdata); enum_aux_records(s, i, r->data.srv.name, AVAHI_DNS_TYPE_AAAA, callback, userdata); - } + } else if (r->key->type == AVAHI_DNS_TYPE_CNAME) + enum_aux_records(s, i, r->data.cname.name, AVAHI_DNS_TYPE_ANY, callback, userdata); } } @@ -170,17 +109,14 @@ void avahi_server_prepare_response(AvahiServer *s, AvahiInterface *i, AvahiEntry } void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiKey *k, int unicast_response) { - AvahiEntry *e; -/* char *txt; */ - assert(s); assert(i); assert(k); -/* avahi_log_debug("Posting responses matching [%s]", txt = avahi_key_to_string(k)); */ -/* avahi_free(txt); */ + /* Push all records that match the specified key to the record list */ if (avahi_key_is_pattern(k)) { + AvahiEntry *e; /* Handle ANY query */ @@ -189,6 +125,7 @@ void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, avahi_server_prepare_response(s, i, e, unicast_response, 0); } else { + AvahiEntry *e; /* Handle all other queries */ @@ -196,27 +133,46 @@ void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, if (!e->dead && avahi_entry_is_registered(s, e, i)) avahi_server_prepare_response(s, i, e, unicast_response, 0); } + + /* Look for CNAME records */ + + if ((k->clazz == AVAHI_DNS_CLASS_IN || k->clazz == AVAHI_DNS_CLASS_ANY) + && k->type != AVAHI_DNS_TYPE_CNAME && k->type != AVAHI_DNS_TYPE_ANY) { + + AvahiKey *cname_key; + + 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); + } } static void withdraw_entry(AvahiServer *s, AvahiEntry *e) { assert(s); assert(e); + + /* Withdraw the specified entry, and if is part of an entry group, + * put that into COLLISION state */ + + 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); + avahi_goodbye_entry(s, k, 0, 1); k->dead = 1; } - } e->group->n_probing = 0; avahi_s_entry_group_change_state(e->group, AVAHI_ENTRY_GROUP_COLLISION); } else { - avahi_goodbye_entry(s, e, 0); + avahi_goodbye_entry(s, e, 0, 1); e->dead = 1; } @@ -229,24 +185,22 @@ static void withdraw_rrset(AvahiServer *s, AvahiKey *key) { assert(s); assert(key); - for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next) - if (!e->dead) - withdraw_entry(s, e); + /* Withdraw an entry RRSset */ + + for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next) + withdraw_entry(s, e); } static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i) { AvahiEntry *e, *n; - char *t; int ours = 0, won = 0, lost = 0; assert(s); assert(record); assert(i); - t = avahi_record_to_string(record); - -/* avahi_log_debug("incoming_probe()"); */ - + /* 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; @@ -269,17 +223,17 @@ static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface * } if (!ours) { - + char *t = avahi_record_to_string(record); + if (won) avahi_log_debug("Recieved conflicting probe [%s]. Local host won.", t); else if (lost) { avahi_log_debug("Recieved conflicting probe [%s]. Local host lost. Withdrawing.", t); withdraw_rrset(s, record->key); - }/* else */ -/* avahi_log_debug("Not conflicting probe"); */ + } + + avahi_free(t); } - - avahi_free(t); } static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *record, int unique, const AvahiAddress *a) { @@ -290,9 +244,8 @@ static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *recor assert(i); assert(record); - -/* avahi_log_debug("CHECKING FOR CONFLICT: [%s]", t); */ - + /* 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; @@ -363,8 +316,6 @@ static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *recor } } -/* avahi_log_debug("ours=%i conflict=%i", ours, conflict); */ - if (!ours && conflict) { char *t; @@ -486,8 +437,8 @@ void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsP avahi_dns_packet_free(reply); size = avahi_record_get_estimate_size(r) + AVAHI_DNS_PACKET_HEADER_SIZE; - if (size > AVAHI_DNS_PACKET_MAX_SIZE) - size = AVAHI_DNS_PACKET_MAX_SIZE; + if (size > AVAHI_DNS_PACKET_SIZE_MAX) + size = AVAHI_DNS_PACKET_SIZE_MAX; if (!(reply = avahi_dns_packet_new_reply(p, size, 0, 1))) break; /* OOM */ @@ -729,10 +680,10 @@ static AvahiLegacyUnicastReflectSlot* allocate_slot(AvahiServer *s) { assert(s); if (!s->legacy_unicast_reflect_slots) - s->legacy_unicast_reflect_slots = avahi_new0(AvahiLegacyUnicastReflectSlot*, AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS); + s->legacy_unicast_reflect_slots = avahi_new0(AvahiLegacyUnicastReflectSlot*, AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX); - for (n = 0; n < AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; n++, s->legacy_unicast_reflect_id++) { - idx = s->legacy_unicast_reflect_id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; + 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; @@ -757,7 +708,7 @@ static void deallocate_slot(AvahiServer *s, AvahiLegacyUnicastReflectSlot *slot) assert(s); assert(slot); - idx = slot->id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; + idx = slot->id % AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX; assert(s->legacy_unicast_reflect_slots[idx] == slot); @@ -774,7 +725,7 @@ static void free_slots(AvahiServer *s) { if (!s->legacy_unicast_reflect_slots) return; - for (idx = 0; idx < AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; idx ++) + for (idx = 0; idx < AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX; idx ++) if (s->legacy_unicast_reflect_slots[idx]) deallocate_slot(s, s->legacy_unicast_reflect_slots[idx]); @@ -790,7 +741,7 @@ static AvahiLegacyUnicastReflectSlot* find_slot(AvahiServer *s, uint16_t id) { if (!s->legacy_unicast_reflect_slots) return NULL; - idx = id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; + idx = id % AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX; if (!s->legacy_unicast_reflect_slots[idx] || s->legacy_unicast_reflect_slots[idx]->id != id) return NULL; @@ -939,7 +890,7 @@ static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const struct sock return; } -/* avahi_log_debug("new packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol); */ +/* avahi_log_debug("new packet received on interface '%s.%i'.", i->hardware->name, i->protocol); */ port = avahi_port_from_sockaddr(sa); avahi_address_from_sockaddr(sa, &a); @@ -1000,7 +951,7 @@ static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const struct sock if (!is_mdns_mcast_address(dest) && !avahi_interface_address_on_link(i, &a)) { - avahi_log_warn("Recivied non-local response on interface '%s.%i'.", i->hardware->name, i->protocol); + avahi_log_warn("Received non-local response on interface '%s.%i'.", i->hardware->name, i->protocol); return; } @@ -1032,7 +983,7 @@ static void dispatch_legacy_unicast_packet(AvahiServer *s, AvahiDnsPacket *p, co return; } -/* avahi_log_debug("new legacy unicast packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol); */ +/* avahi_log_debug("new legacy unicast packet received on interface '%s.%i'.", i->hardware->name, i->protocol); */ avahi_address_from_sockaddr(sa, &a); @@ -1064,6 +1015,13 @@ static void dispatch_legacy_unicast_packet(AvahiServer *s, AvahiDnsPacket *p, co avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->id); } +static void cleanup_dead(AvahiServer *s) { + assert(s); + + avahi_cleanup_dead_entries(s); + avahi_browser_cleanup(s); +} + static void socket_event(AvahiWatch *w, int fd, AvahiWatchEvent events, void *userdata) { AvahiServer *s = userdata; AvahiAddress dest; @@ -1146,19 +1104,13 @@ void avahi_server_decrease_host_rr_pending(AvahiServer *s) { server_set_state(s, AVAHI_SERVER_RUNNING); } -void avahi_server_increase_host_rr_pending(AvahiServer *s) { - assert(s); - - s->n_host_rr_pending ++; -} - void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void *userdata) { assert(s); assert(g); if (state == AVAHI_ENTRY_GROUP_REGISTERING && s->state == AVAHI_SERVER_REGISTERING) - avahi_server_increase_host_rr_pending(s); + s->n_host_rr_pending ++; else if (state == AVAHI_ENTRY_GROUP_COLLISION && (s->state == AVAHI_SERVER_REGISTERING || s->state == AVAHI_SERVER_RUNNING)) { @@ -1249,7 +1201,7 @@ static void register_stuff(AvahiServer *s) { assert(s); server_set_state(s, AVAHI_SERVER_REGISTERING); - s->n_host_rr_pending ++; /** Make sure that the state isn't changed tp AVAHI_SERVER_RUNNING too early */ + s->n_host_rr_pending ++; /** Make sure that the state isn't changed tp AVAHI_SERVER_RUNNING too early */ register_hinfo(s); register_browse_domain(s); @@ -1389,18 +1341,21 @@ AvahiServer *avahi_server_new(const AvahiPoll *poll_api, const AvahiServerConfig return NULL; } - s->n_host_rr_pending = 0; s->need_entry_cleanup = 0; s->need_group_cleanup = 0; s->need_browser_cleanup = 0; - - s->time_event_queue = avahi_time_event_queue_new(poll_api); - + s->hinfo_entry_group = NULL; + s->browse_domain_entry_group = NULL; + s->error = AVAHI_OK; + s->state = AVAHI_SERVER_INVALID; + s->callback = callback; s->userdata = userdata; - + + s->time_event_queue = avahi_time_event_queue_new(poll_api); + s->entries_by_key = avahi_hashmap_new((AvahiHashFunc) avahi_key_hash, (AvahiEqualFunc) avahi_key_equal, NULL, NULL); AVAHI_LLIST_HEAD_INIT(AvahiEntry, s->entries); AVAHI_LLIST_HEAD_INIT(AvahiGroup, s->groups); @@ -1418,17 +1373,7 @@ AvahiServer *avahi_server_new(const AvahiPoll *poll_api, const AvahiServerConfig s->legacy_unicast_reflect_slots = NULL; s->legacy_unicast_reflect_id = 0; - if (s->config.enable_wide_area) { - s->wide_area_lookup_engine = avahi_wide_area_engine_new(s); - avahi_wide_area_set_servers(s->wide_area_lookup_engine, s->config.wide_area_servers, s->config.n_wide_area_servers); - } else - s->wide_area_lookup_engine = NULL; - - s->multicast_lookup_engine = avahi_multicast_lookup_engine_new(s); - - do { - s->local_service_cookie = (uint32_t) rand() * (uint32_t) rand(); - } while (s->local_service_cookie == AVAHI_SERVICE_COOKIE_INVALID); + 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(); @@ -1437,20 +1382,23 @@ AvahiServer *avahi_server_new(const AvahiPoll *poll_api, const AvahiServerConfig s->host_name_fqdn = NULL; update_fqdn(s); - s->record_list = avahi_record_list_new(); + do { + s->local_service_cookie = (uint32_t) rand() * (uint32_t) rand(); + } while (s->local_service_cookie == AVAHI_SERVICE_COOKIE_INVALID); - s->state = AVAHI_SERVER_INVALID; + if (s->config.enable_wide_area) { + s->wide_area_lookup_engine = avahi_wide_area_engine_new(s); + avahi_wide_area_set_servers(s->wide_area_lookup_engine, s->config.wide_area_servers, s->config.n_wide_area_servers); + } else + 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); - - s->hinfo_entry_group = NULL; - s->browse_domain_entry_group = NULL; register_stuff(s); - - s->error = AVAHI_OK; return s; } @@ -1480,12 +1428,12 @@ void avahi_server_free(AvahiServer* s) { /* Remove all locally rgeistered stuff */ while(s->entries) - free_entry(s, s->entries); + avahi_entry_free(s, s->entries); avahi_interface_monitor_free(s->monitor); while (s->groups) - free_group(s, s->groups); + avahi_entry_group_free(s, s->groups); free_slots(s); @@ -1534,1107 +1482,211 @@ void avahi_server_free(AvahiServer* s) { avahi_free(s); } -static int check_record_conflict(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *r, AvahiPublishFlags flags) { - AvahiEntry *e; - +const char* avahi_server_get_domain_name(AvahiServer *s) { assert(s); - assert(r); - for (e = avahi_hashmap_lookup(s->entries_by_key, r->key); e; e = e->by_key_next) { - if (e->dead) - continue; + return s->domain_name; +} - if (!(flags & AVAHI_PUBLISH_UNIQUE) && !(e->flags & AVAHI_PUBLISH_UNIQUE)) - continue; - - if ((flags & AVAHI_PUBLISH_ALLOW_MULTIPLE) && (e->flags & AVAHI_PUBLISH_ALLOW_MULTIPLE) ) - continue; +const char* avahi_server_get_host_name(AvahiServer *s) { + assert(s); - if ((interface <= 0 || - e->interface <= 0 || - e->interface == interface) && - (protocol == AVAHI_PROTO_UNSPEC || - e->protocol == AVAHI_PROTO_UNSPEC || - e->protocol == protocol)) + return s->host_name; +} - return -1; - } +const char* avahi_server_get_host_name_fqdn(AvahiServer *s) { + assert(s); - return 0; + return s->host_name_fqdn; } -int avahi_server_add( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - AvahiRecord *r) { - - AvahiEntry *e, *t; - +void* avahi_server_get_data(AvahiServer *s) { assert(s); - assert(r); - if (!AVAHI_IF_VALID(interface)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE); + return s->userdata; +} - if (!AVAHI_PROTO_VALID(protocol)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL); - - if (!AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_NO_ANNOUNCE|AVAHI_PUBLISH_NO_PROBE|AVAHI_PUBLISH_UNIQUE|AVAHI_PUBLISH_ALLOW_MULTIPLE|AVAHI_PUBLISH_IS_PROXY)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS); - - if (!avahi_is_valid_domain_name(r->key->name)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME); - - if (r->ttl == 0) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_TTL); +void avahi_server_set_data(AvahiServer *s, void* userdata) { + assert(s); + + s->userdata = userdata; +} - if (avahi_key_is_pattern(r->key)) - return avahi_server_set_errno(s, AVAHI_ERR_IS_PATTERN); +AvahiServerState avahi_server_get_state(AvahiServer *s) { + assert(s); - if (!avahi_record_is_valid(r)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_RECORD); + return s->state; +} - if (check_record_conflict(s, interface, protocol, r, flags) < 0) - return avahi_server_set_errno(s, AVAHI_ERR_LOCAL_COLLISION); +AvahiServerConfig* avahi_server_config_init(AvahiServerConfig *c) { + assert(c); - if (!(e = avahi_new(AvahiEntry, 1))) - return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - - e->server = s; - e->record = avahi_record_ref(r); - e->group = g; - e->interface = interface; - e->protocol = protocol; - e->flags = flags; - e->dead = 0; + memset(c, 0, sizeof(AvahiServerConfig)); + c->use_ipv6 = 1; + c->use_ipv4 = 1; + c->host_name = NULL; + c->domain_name = NULL; + c->check_response_ttl = 0; + c->publish_hinfo = 1; + c->publish_addresses = 1; + c->publish_workstation = 1; + c->publish_domain = 1; + c->use_iff_running = 0; + c->enable_reflector = 0; + c->reflect_ipv = 0; + c->add_service_cookie = 1; + c->enable_wide_area = 0; + c->n_wide_area_servers = 0; + c->disallow_other_stacks = 0; + + return c; +} - AVAHI_LLIST_HEAD_INIT(AvahiAnnouncement, e->announcements); +void avahi_server_config_free(AvahiServerConfig *c) { + assert(c); - AVAHI_LLIST_PREPEND(AvahiEntry, entries, s->entries, e); + avahi_free(c->host_name); + avahi_free(c->domain_name); +} - /* Insert into hash table indexed by name */ - t = avahi_hashmap_lookup(s->entries_by_key, e->record->key); - AVAHI_LLIST_PREPEND(AvahiEntry, by_key, t, e); - avahi_hashmap_replace(s->entries_by_key, e->record->key, t); +AvahiServerConfig* avahi_server_config_copy(AvahiServerConfig *ret, const AvahiServerConfig *c) { + char *d = NULL, *h = NULL; + assert(ret); + assert(c); - /* Insert into group list */ - if (g) - AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e); + if (c->host_name) + if (!(h = avahi_strdup(c->host_name))) + return NULL; - avahi_announce_entry(s, e); + if (c->domain_name) + if (!(d = avahi_strdup(c->domain_name))) { + avahi_free(h); + return NULL; + } + + *ret = *c; + ret->host_name = h; + ret->domain_name = d; - return 0; + return ret; } -const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiSEntryGroup *g, void **state) { - AvahiEntry **e = (AvahiEntry**) state; +int avahi_server_errno(AvahiServer *s) { assert(s); - assert(e); - - if (!*e) - *e = g ? g->entries : s->entries; - while (*e && (*e)->dead) - *e = g ? (*e)->by_group_next : (*e)->entries_next; - - if (!*e) - return NULL; + return s->error; +} - return avahi_record_ref((*e)->record); +/* Just for internal use */ +int avahi_server_set_errno(AvahiServer *s, int error) { + assert(s); + + return s->error = error; } -int avahi_server_dump(AvahiServer *s, AvahiDumpCallback callback, void* userdata) { - AvahiEntry *e; - +uint32_t avahi_server_get_local_service_cookie(AvahiServer *s) { assert(s); - assert(callback); - callback(";;; ZONE DUMP FOLLOWS ;;;", userdata); + return s->local_service_cookie; +} - for (e = s->entries; e; e = e->entries_next) { - char *t; - char ln[256]; +static AvahiEntry *find_entry(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key) { + AvahiEntry *e; + + assert(s); + assert(key); - if (e->dead) - continue; - - if (!(t = avahi_record_to_string(e->record))) - return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - - snprintf(ln, sizeof(ln), "%s ; iface=%i proto=%i", t, e->interface, e->protocol); - avahi_free(t); + for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next) - callback(ln, userdata); - } + if ((e->interface == interface || e->interface <= 0 || interface <= 0) && + (e->protocol == protocol || e->protocol == AVAHI_PROTO_UNSPEC || protocol == AVAHI_PROTO_UNSPEC) && + (!e->group || e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED || e->group->state == AVAHI_ENTRY_GROUP_REGISTERING)) - avahi_dump_caches(s->monitor, callback, userdata); + return e; - if (s->wide_area_lookup_engine) - avahi_wide_area_cache_dump(s->wide_area_lookup_engine, callback, userdata); - return AVAHI_OK; + return NULL; } -int avahi_server_add_ptr( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - uint32_t ttl, - const char *name, - const char *dest) { - - AvahiRecord *r; +int avahi_server_get_group_of_service(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, const char *name, const char *type, const char *domain, AvahiSEntryGroup** ret_group) { + AvahiKey *key = NULL; + AvahiEntry *e; int ret; - - assert(s); - assert(dest); - - if ((name && !avahi_is_valid_domain_name(name)) || !avahi_is_valid_domain_name(dest)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME); - - if (!name) - name = s->host_name_fqdn; - - if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR, ttl))) - return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - - r->data.ptr.name = avahi_normalize_name_strdup(dest); - ret = avahi_server_add(s, g, interface, protocol, flags, r); - avahi_record_unref(r); - return ret; -} - -int avahi_server_add_address( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - const char *name, - AvahiAddress *a) { - - char *n = NULL; - int ret = AVAHI_OK; - - assert(s); - assert(a); - - if (!AVAHI_IF_VALID(interface)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE); - - if (!AVAHI_PROTO_VALID(protocol) || !AVAHI_PROTO_VALID(a->proto)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL); - - if (!AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_NO_REVERSE|AVAHI_PUBLISH_NO_ANNOUNCE|AVAHI_PUBLISH_NO_PROBE)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS); - - if (name && !avahi_is_valid_domain_name(name)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME); - - if (!name) - name = s->host_name_fqdn; - else { - if (!(n = avahi_normalize_name_strdup(name))) - return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - - name = n; - } - - if (a->proto == AVAHI_PROTO_INET) { - AvahiRecord *r; - - if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME))) { - ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - goto fail; - } - - r->data.a.address = a->data.ipv4; - ret = avahi_server_add(s, g, interface, protocol, (flags & ~ AVAHI_PUBLISH_NO_REVERSE) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r); - avahi_record_unref(r); - - if (ret < 0) - goto fail; - - if (!(flags & AVAHI_PUBLISH_NO_REVERSE)) { - char *reverse; - - if (!(reverse = avahi_reverse_lookup_name_ipv4(&a->data.ipv4))) { - ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - goto fail; - } - - ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name); - avahi_free(reverse); - } - - } else { - AvahiRecord *r; - - assert(a->proto == AVAHI_PROTO_INET6); - - if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME))) { - ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - goto fail; - } - - r->data.aaaa.address = a->data.ipv6; - ret = avahi_server_add(s, g, interface, protocol, (flags & ~ AVAHI_PUBLISH_NO_REVERSE) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r); - avahi_record_unref(r); - - if (ret < 0) - goto fail; - - if (!(flags & AVAHI_PUBLISH_NO_REVERSE)) { - char *reverse; - - if (!(reverse = avahi_reverse_lookup_name_ipv6_arpa(&a->data.ipv6))) { - ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - goto fail; - } - - ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name); - avahi_free(reverse); - - if (ret < 0) - goto fail; - - if (!(reverse = avahi_reverse_lookup_name_ipv6_int(&a->data.ipv6))) { - ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - goto fail; - } - - ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name); - avahi_free(reverse); - } - } - -fail: - - avahi_free(n); - - return ret; -} - -static int server_add_txt_strlst_nocopy( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - uint32_t ttl, - const char *name, - AvahiStringList *strlst) { - - AvahiRecord *r; - int ret; - - assert(s); - - if (!(r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT, ttl))) { - avahi_string_list_free(strlst); - return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - } - - r->data.txt.string_list = strlst; - ret = avahi_server_add(s, g, interface, protocol, flags, r); - avahi_record_unref(r); - - return ret; -} - -int avahi_server_add_txt_strlst( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - uint32_t ttl, - const char *name, - AvahiStringList *strlst) { - - assert(s); - - return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_copy(strlst)); -} - -int avahi_server_add_txt_va( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - uint32_t ttl, - const char *name, - va_list va) { - - assert(s); - - return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_new_va(va)); -} - -int avahi_server_add_txt( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - uint32_t ttl, - const char *name, - ...) { - - va_list va; - int ret; - - assert(s); - - va_start(va, name); - ret = avahi_server_add_txt_va(s, g, interface, protocol, flags, ttl, name, va); - va_end(va); - - return ret; -} - -static AvahiStringList *add_magic_cookie( - AvahiServer *s, - AvahiStringList *strlst) { - - assert(s); - - if (!s->config.add_service_cookie) - return strlst; - - if (avahi_string_list_find(strlst, AVAHI_SERVICE_COOKIE)) - /* This string list already contains a magic cookie */ - return strlst; - - return avahi_string_list_add_printf(strlst, AVAHI_SERVICE_COOKIE"=%u", s->local_service_cookie); -} - -static int server_add_service_strlst_nocopy( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - const char *name, - const char *type, - const char *domain, - const char *host, - uint16_t port, - AvahiStringList *strlst) { - - char ptr_name[AVAHI_DOMAIN_NAME_MAX], svc_name[AVAHI_DOMAIN_NAME_MAX], enum_ptr[AVAHI_DOMAIN_NAME_MAX], *h = NULL; - AvahiRecord *r = NULL; - int ret = AVAHI_OK; - - assert(s); - assert(type); - assert(name); - - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_NO_COOKIE|AVAHI_PUBLISH_IS_PROXY), AVAHI_ERR_INVALID_FLAGS); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !host || avahi_is_valid_domain_name(host), AVAHI_ERR_INVALID_HOST_NAME); - - if (!domain) - domain = s->domain_name; - - if (!host) - host = s->host_name_fqdn; - - if (!(h = avahi_normalize_name_strdup(host))) { - ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - goto fail; - } - - if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0 || - (ret = avahi_service_name_join(ptr_name, sizeof(ptr_name), NULL, type, domain)) < 0 || - (ret = avahi_service_name_join(enum_ptr, sizeof(enum_ptr), NULL, "_services._dns-sd._udp", domain)) < 0) { - avahi_server_set_errno(s, ret); - goto fail; - } - - /* Add service enumeration PTR record */ - - if ((ret = avahi_server_add_ptr(s, g, interface, protocol, flags & AVAHI_PUBLISH_IS_PROXY, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0) - goto fail; - - /* Add SRV record */ - - if (!(r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) { - ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - goto fail; - } - - r->data.srv.priority = 0; - r->data.srv.weight = 0; - r->data.srv.port = port; - r->data.srv.name = h; - h = NULL; - ret = avahi_server_add(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY) | AVAHI_PUBLISH_UNIQUE, r); - avahi_record_unref(r); - - if (ret < 0) - goto fail; - - /* Add TXT record */ - - if (!(flags & AVAHI_PUBLISH_NO_COOKIE)) - strlst = add_magic_cookie(s, strlst); - - ret = server_add_txt_strlst_nocopy(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY) | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL, svc_name, strlst); - strlst = NULL; - - if (ret < 0) - goto fail; - - /* Add service type enumeration record */ - - ret = avahi_server_add_ptr(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY), AVAHI_DEFAULT_TTL, enum_ptr, ptr_name); - -fail: + char n[AVAHI_DOMAIN_NAME_MAX]; - avahi_string_list_free(strlst); - avahi_free(h); - - return ret; -} - -int avahi_server_add_service_strlst( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - const char *name, - const char *type, - const char *domain, - const char *host, - uint16_t port, - AvahiStringList *strlst) { - assert(s); - assert(type); assert(name); - - return server_add_service_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, host, port, avahi_string_list_copy(strlst)); -} - -int avahi_server_add_service_va( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - const char *name, - const char *type, - const char *domain, - const char *host, - uint16_t port, - va_list va) { - - assert(s); assert(type); - assert(name); - - return server_add_service_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, host, port, avahi_string_list_new_va(va)); -} - -int avahi_server_add_service( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - const char *name, - const char *type, - const char *domain, - const char *host, - uint16_t port, - ... ){ - - va_list va; - int ret; - - assert(s); - assert(type); - assert(name); - - va_start(va, port); - ret = avahi_server_add_service_va(s, g, interface, protocol, flags, name, type, domain, host, port, va); - va_end(va); - - return ret; -} - -int avahi_server_add_service_subtype( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - const char *name, - const char *type, - const char *domain, - const char *subtype) { - - int ret = AVAHI_OK; - char svc_name[AVAHI_DOMAIN_NAME_MAX], ptr_name[AVAHI_DOMAIN_NAME_MAX]; - - assert(name); - assert(type); - assert(subtype); - - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, 0), AVAHI_ERR_INVALID_FLAGS); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME); - AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_subtype(subtype), AVAHI_ERR_INVALID_SERVICE_SUBTYPE); - - if (!domain) - domain = s->domain_name; - - if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0 || - (ret = avahi_service_name_join(ptr_name, sizeof(ptr_name), NULL, subtype, domain)) < 0) { - avahi_server_set_errno(s, ret); - goto fail; - } - - if ((ret = avahi_server_add_ptr(s, g, interface, protocol, flags & AVAHI_PUBLISH_IS_PROXY, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0) - goto fail; - -fail: - - return ret; -} - -static void hexstring(char *s, size_t sl, const void *p, size_t pl) { - static const char hex[] = "0123456789abcdef"; - int b = 0; - const uint8_t *k = p; - - while (sl > 1 && pl > 0) { - *(s++) = hex[(b ? *k : *k >> 4) & 0xF]; - - if (b) { - k++; - pl--; - } - - b = !b; - - sl--; - } - - if (sl > 0) - *s = 0; -} - -int avahi_server_add_dns_server_address( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - const char *domain, - AvahiDNSServerType type, - const AvahiAddress *address, - uint16_t port /** should be 53 */) { - - AvahiRecord *r; - int ret; - char n[64], h[64]; - - assert(s); - assert(address); + assert(ret_group); if (!AVAHI_IF_VALID(interface)) return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE); - if (!AVAHI_PROTO_VALID(protocol) || !AVAHI_PROTO_VALID(address->proto)) + if (!AVAHI_IF_VALID(protocol)) return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL); - if (!AVAHI_FLAGS_VALID(flags, 0) || (type != AVAHI_DNS_SERVER_UPDATE && type != AVAHI_DNS_SERVER_RESOLVE)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS); - - if (port == 0) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT); - - if (domain && !avahi_is_valid_domain_name(domain)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME); - - if (!domain) - domain = s->domain_name; - - if (address->proto == AVAHI_PROTO_INET) { - hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv4Address)); - snprintf(n, sizeof(n), "ip-%s.%s", h, domain); - r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME); - r->data.a.address = address->data.ipv4; - } else { - hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv6Address)); - snprintf(n, sizeof(n), "ip6-%s.%s", h, domain); - r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME); - r->data.aaaa.address = address->data.ipv6; - } - - if (!r) - return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - - ret = avahi_server_add(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r); - avahi_record_unref(r); - - if (ret < 0) - return ret; - - return avahi_server_add_dns_server_name(s, g, interface, protocol, flags, domain, type, n, port); -} - -int avahi_server_add_dns_server_name( - AvahiServer *s, - AvahiSEntryGroup *g, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiPublishFlags flags, - const char *domain, - AvahiDNSServerType type, - const char *name, - uint16_t port /** should be 53 */) { - - int ret = -1; - char t[256], *d = NULL, *n = NULL; - AvahiRecord *r; - - assert(s); - assert(name); - - if (!AVAHI_IF_VALID(interface)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE); - - if (!AVAHI_PROTO_VALID(protocol)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL); - - if (!AVAHI_FLAGS_VALID(flags, 0) || (type != AVAHI_DNS_SERVER_UPDATE && type != AVAHI_DNS_SERVER_RESOLVE)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS); - - if (port == 0) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT); + if (!avahi_is_valid_service_name(name)) + return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_NAME); - if (!avahi_is_valid_domain_name(name)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME); + if (!avahi_is_valid_service_type_strict(type)) + return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_TYPE); if (domain && !avahi_is_valid_domain_name(domain)) return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME); - - if (!domain) - domain = s->domain_name; - - if (!(n = avahi_normalize_name_strdup(name)) || - !(d = avahi_normalize_name_strdup(domain))) { - avahi_free(n); - avahi_free(d); - return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - } - - snprintf(t, sizeof(t), "%s.%s", type == AVAHI_DNS_SERVER_RESOLVE ? "_domain._udp" : "_dns-update._udp", d); - avahi_free(d); - - if (!(r = avahi_record_new_full(t, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) { - avahi_free(n); - return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - } - - r->data.srv.priority = 0; - r->data.srv.weight = 0; - r->data.srv.port = port; - r->data.srv.name = n; - ret = avahi_server_add(s, g, interface, protocol, AVAHI_PUBLISH_NULL, r); - avahi_record_unref(r); - - return ret; -} - -static void post_query_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, void* userdata) { - AvahiKey *k = userdata; - - assert(m); - assert(i); - assert(k); - - avahi_interface_post_query(i, k, 0); -} - -void avahi_server_post_query(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key) { - assert(s); - assert(key); - - avahi_interface_monitor_walk(s->monitor, interface, protocol, post_query_callback, key); -} - -void avahi_s_entry_group_change_state(AvahiSEntryGroup *g, AvahiEntryGroupState state) { - assert(g); - - if (g->state == state) - return; - - assert(state <= AVAHI_ENTRY_GROUP_COLLISION); - - if (g->state == AVAHI_ENTRY_GROUP_ESTABLISHED) { - - /* If the entry group was established for a time longer then - * 5s, reset the establishment trial counter */ - - if (avahi_age(&g->established_at) > 5000000) - g->n_register_try = 0; - } - - if (state == AVAHI_ENTRY_GROUP_ESTABLISHED) - - /* If the entry group is now established, remember the time - * this happened */ - - gettimeofday(&g->established_at, NULL); - - g->state = state; - - if (g->callback) - g->callback(g->server, g, state, g->userdata); -} - -AvahiSEntryGroup *avahi_s_entry_group_new(AvahiServer *s, AvahiSEntryGroupCallback callback, void* userdata) { - AvahiSEntryGroup *g; - - assert(s); - - if (!(g = avahi_new(AvahiSEntryGroup, 1))) { - avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); - return NULL; - } - - g->server = s; - g->callback = callback; - g->userdata = userdata; - g->dead = 0; - g->state = AVAHI_ENTRY_GROUP_UNCOMMITED; - g->n_probing = 0; - g->n_register_try = 0; - g->register_time_event = NULL; - g->register_time.tv_sec = 0; - g->register_time.tv_usec = 0; - AVAHI_LLIST_HEAD_INIT(AvahiEntry, g->entries); - - AVAHI_LLIST_PREPEND(AvahiSEntryGroup, groups, s->groups, g); - return g; -} - -void avahi_s_entry_group_free(AvahiSEntryGroup *g) { - AvahiEntry *e; - - assert(g); - assert(g->server); - - for (e = g->entries; e; e = e->by_group_next) { - if (!e->dead) { - avahi_goodbye_entry(g->server, e, 1); - e->dead = 1; - } - } - - if (g->register_time_event) { - avahi_time_event_free(g->register_time_event); - g->register_time_event = NULL; - } - - g->dead = 1; - - g->server->need_group_cleanup = 1; - g->server->need_entry_cleanup = 1; -} - -static void entry_group_commit_real(AvahiSEntryGroup *g) { - assert(g); - - gettimeofday(&g->register_time, NULL); - - avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING); - - if (!g->dead) { - avahi_announce_group(g->server, g); - avahi_s_entry_group_check_probed(g, 0); - } -} - -static void entry_group_register_time_event_callback(AvahiTimeEvent *e, void* userdata) { - AvahiSEntryGroup *g = userdata; - assert(g); - -/* avahi_log_debug("Holdoff passed, waking up and going on."); */ - - avahi_time_event_free(g->register_time_event); - g->register_time_event = NULL; - - /* Holdoff time passed, so let's start probing */ - entry_group_commit_real(g); -} - -int avahi_s_entry_group_commit(AvahiSEntryGroup *g) { - struct timeval now; - - assert(g); - assert(!g->dead); - - if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED && g->state != AVAHI_ENTRY_GROUP_COLLISION) - return avahi_server_set_errno(g->server, AVAHI_ERR_BAD_STATE); - - g->n_register_try++; - - avahi_timeval_add(&g->register_time, - 1000*(g->n_register_try >= AVAHI_RR_RATE_LIMIT_COUNT ? - AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT : - AVAHI_RR_HOLDOFF_MSEC)); - - gettimeofday(&now, NULL); - if (avahi_timeval_compare(&g->register_time, &now) <= 0) { - /* Holdoff time passed, so let's start probing */ -/* avahi_log_debug("Holdoff passed, directly going on."); */ - - entry_group_commit_real(g); - } else { -/* avahi_log_debug("Holdoff not passed, sleeping."); */ - - /* Holdoff time has not yet passed, so let's wait */ - assert(!g->register_time_event); - g->register_time_event = avahi_time_event_new(g->server->time_event_queue, &g->register_time, entry_group_register_time_event_callback, g); + if ((ret = avahi_service_name_join(n, sizeof(n), name, type, domain) < 0)) + return avahi_server_set_errno(s, ret); - avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING); - } - - return AVAHI_OK; -} + if (!(key = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV))) + return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY); -void avahi_s_entry_group_reset(AvahiSEntryGroup *g) { - AvahiEntry *e; - assert(g); - - for (e = g->entries; e; e = e->by_group_next) { - if (!e->dead) { - avahi_goodbye_entry(g->server, e, 1); - e->dead = 1; - } - } - g->server->need_entry_cleanup = 1; + e = find_entry(s, interface, protocol, key); + avahi_key_unref(key); - if (g->register_time_event) { - avahi_time_event_free(g->register_time_event); - g->register_time_event = NULL; + if (e) { + *ret_group = e->group; + return AVAHI_OK; } - - g->n_probing = 0; - - gettimeofday(&g->register_time, NULL); - - avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_UNCOMMITED); -} - -int avahi_entry_is_commited(AvahiEntry *e) { - assert(e); - assert(!e->dead); - return !e->group || - e->group->state == AVAHI_ENTRY_GROUP_REGISTERING || - e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED; + return avahi_server_set_errno(s, AVAHI_ERR_NOT_FOUND); } -AvahiEntryGroupState avahi_s_entry_group_get_state(AvahiSEntryGroup *g) { - assert(g); - assert(!g->dead); - - return g->state; -} - -void avahi_s_entry_group_set_data(AvahiSEntryGroup *g, void* userdata) { - assert(g); - - g->userdata = userdata; -} - -void* avahi_s_entry_group_get_data(AvahiSEntryGroup *g) { - assert(g); - - return g->userdata; -} - -int avahi_s_entry_group_is_empty(AvahiSEntryGroup *g) { +int avahi_server_is_service_local(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, const char *name) { + AvahiKey *key = NULL; AvahiEntry *e; - assert(g); - - /* Look for an entry that is not dead */ - for (e = g->entries; e; e = e->by_group_next) - if (!e->dead) - return 0; - - return 1; -} - -const char* avahi_server_get_domain_name(AvahiServer *s) { - assert(s); - - return s->domain_name; -} - -const char* avahi_server_get_host_name(AvahiServer *s) { - assert(s); - - return s->host_name; -} - -const char* avahi_server_get_host_name_fqdn(AvahiServer *s) { - assert(s); - - return s->host_name_fqdn; -} - -void* avahi_server_get_data(AvahiServer *s) { - assert(s); - - return s->userdata; -} -void avahi_server_set_data(AvahiServer *s, void* userdata) { assert(s); + assert(name); - s->userdata = userdata; -} - -AvahiServerState avahi_server_get_state(AvahiServer *s) { - assert(s); - - return s->state; -} - -AvahiServerConfig* avahi_server_config_init(AvahiServerConfig *c) { - assert(c); - - memset(c, 0, sizeof(AvahiServerConfig)); - c->use_ipv6 = 1; - c->use_ipv4 = 1; - c->host_name = NULL; - c->domain_name = NULL; - c->check_response_ttl = 0; - c->publish_hinfo = 1; - c->publish_addresses = 1; - c->publish_workstation = 1; - c->publish_domain = 1; - c->use_iff_running = 0; - c->enable_reflector = 0; - c->reflect_ipv = 0; - c->add_service_cookie = 1; - c->enable_wide_area = 0; - c->n_wide_area_servers = 0; - c->disallow_other_stacks = 0; - - return c; -} - -void avahi_server_config_free(AvahiServerConfig *c) { - assert(c); - - avahi_free(c->host_name); - avahi_free(c->domain_name); -} - -AvahiServerConfig* avahi_server_config_copy(AvahiServerConfig *ret, const AvahiServerConfig *c) { - char *d = NULL, *h = NULL; - assert(ret); - assert(c); - - if (c->host_name) - if (!(h = avahi_strdup(c->host_name))) - return NULL; - - if (c->domain_name) - if (!(d = avahi_strdup(c->domain_name))) { - avahi_free(h); - return NULL; - } + if (!s->host_name_fqdn) + return 0; - *ret = *c; - ret->host_name = h; - ret->domain_name = d; + if (!(key = avahi_key_new(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV))) + return 0; - return ret; -} + e = find_entry(s, interface, protocol, key); + avahi_key_unref(key); -int avahi_server_errno(AvahiServer *s) { - assert(s); + if (!e) + return 0; - return s->error; -} - -/* Just for internal use */ -int avahi_server_set_errno(AvahiServer *s, int error) { - assert(s); - - return s->error = error; + return avahi_domain_equal(s->host_name_fqdn, e->record->data.srv.name); } -uint32_t avahi_server_get_local_service_cookie(AvahiServer *s) { - assert(s); - - return s->local_service_cookie; -} - -int avahi_server_is_service_local(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, const char *name, const char *type, const char*domain) { - AvahiKey *key = NULL; - char n[256]; - int ret; +int avahi_server_is_record_local(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *record) { AvahiEntry *e; - - assert(s); - assert(name); - assert(type); - assert(domain); - - if (!avahi_is_valid_service_name(name)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_NAME); - if (!avahi_is_valid_service_type_strict(type)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_TYPE); - - if (domain && !avahi_is_valid_domain_name(domain)) - return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME); - - 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); - - ret = 0; + assert(s); + assert(record); - for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next) { + 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) && (e->protocol == protocol || e->protocol == AVAHI_PROTO_UNSPEC || protocol == AVAHI_PROTO_UNSPEC) && - !(e->flags & AVAHI_PUBLISH_IS_PROXY)) { - ret = 1; - break; - } - } - - avahi_key_unref(key); - - return ret; + (!e->group || e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED || e->group->state == AVAHI_ENTRY_GROUP_REGISTERING) && + avahi_record_equal_no_ttl(record, e->record)) + return 1; + + return 0; } /** Set the wide area DNS servers */