void avahi_s_service_resolver_free(AvahiSServiceResolver *r) { assert(r); AVAHI_LLIST_REMOVE(AvahiSServiceResolver, resolver, r->server->service_resolvers, r); if (r->time_event) avahi_time_event_free(r->time_event); if (r->record_browser_srv) avahi_s_record_browser_free(r->record_browser_srv); if (r->record_browser_txt) avahi_s_record_browser_free(r->record_browser_txt); if (r->record_browser_a) avahi_s_record_browser_free(r->record_browser_a); if (r->record_browser_aaaa) avahi_s_record_browser_free(r->record_browser_aaaa); if (r->srv_record) avahi_record_unref(r->srv_record); if (r->txt_record) avahi_record_unref(r->txt_record); if (r->address_record) avahi_record_unref(r->address_record); avahi_free(r->service_name); avahi_free(r->service_type); avahi_free(r->domain_name); avahi_free(r); }
void avahi_s_domain_browser_free(AvahiSDomainBrowser *b) { assert(b); assert(b->ref >= 1); if (--b->ref > 0) return; AVAHI_LLIST_REMOVE(AvahiSDomainBrowser, browser, b->server->domain_browsers, b); if (b->record_browser) avahi_s_record_browser_free(b->record_browser); if (b->defer_event) avahi_time_event_free(b->defer_event); avahi_free(b); }
void avahi_dbus_record_browser_free(RecordBrowserInfo *i) { assert(i); if (i->record_browser) avahi_s_record_browser_free(i->record_browser); if (i->path) { dbus_connection_unregister_object_path(server->bus, i->path); avahi_free(i->path); } AVAHI_LLIST_REMOVE(RecordBrowserInfo, record_browsers, i->client->record_browsers, i); assert(i->client->n_objects >= 1); i->client->n_objects--; avahi_free(i); }
void avahi_s_address_resolver_free(AvahiSAddressResolver *r) { assert(r); AVAHI_LLIST_REMOVE(AvahiSAddressResolver, resolver, r->server->address_resolvers, r); if (r->record_browser) avahi_s_record_browser_free(r->record_browser); if (r->time_event) avahi_time_event_free(r->time_event); if (r->ptr_record) avahi_record_unref(r->ptr_record); if (r->key) avahi_key_unref(r->key); avahi_free(r); }
static void record_browser_callback( AvahiSRecordBrowser*rr, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, AvahiRecord *record, AvahiLookupResultFlags flags, void* userdata) { AvahiSServiceResolver *r = userdata; assert(rr); assert(r); if (rr == r->record_browser_aaaa || rr == r->record_browser_a) r->address_flags = flags; else if (rr == r->record_browser_srv) r->srv_flags = flags; else if (rr == r->record_browser_txt) r->txt_flags = flags; switch (event) { case AVAHI_BROWSER_NEW: { int changed = 0; assert(record); if (r->interface > 0 && interface > 0 && interface != r->interface) return; if (r->protocol != AVAHI_PROTO_UNSPEC && protocol != AVAHI_PROTO_UNSPEC && protocol != r->protocol) return; if (r->interface <= 0) r->interface = interface; if (r->protocol == AVAHI_PROTO_UNSPEC) r->protocol = protocol; switch (record->key->type) { case AVAHI_DNS_TYPE_SRV: if (!r->srv_record) { r->srv_record = avahi_record_ref(record); changed = 1; if (r->record_browser_a) { avahi_s_record_browser_free(r->record_browser_a); r->record_browser_a = NULL; } if (r->record_browser_aaaa) { avahi_s_record_browser_free(r->record_browser_aaaa); r->record_browser_aaaa = NULL; } if (!(r->user_flags & AVAHI_LOOKUP_NO_ADDRESS)) { if (r->address_protocol == AVAHI_PROTO_INET || r->address_protocol == AVAHI_PROTO_UNSPEC) { AvahiKey *k = avahi_key_new(r->srv_record->data.srv.name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A); r->record_browser_a = avahi_s_record_browser_new(r->server, r->interface, r->protocol, k, r->user_flags & ~(AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), record_browser_callback, r); avahi_key_unref(k); } if (r->address_protocol == AVAHI_PROTO_INET6 || r->address_protocol == AVAHI_PROTO_UNSPEC) { AvahiKey *k = avahi_key_new(r->srv_record->data.srv.name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA); r->record_browser_aaaa = avahi_s_record_browser_new(r->server, r->interface, r->protocol, k, r->user_flags & ~(AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), record_browser_callback, r); avahi_key_unref(k); } } } break; case AVAHI_DNS_TYPE_TXT: assert(!(r->user_flags & AVAHI_LOOKUP_NO_TXT)); if (!r->txt_record) { r->txt_record = avahi_record_ref(record); changed = 1; } break; case AVAHI_DNS_TYPE_A: case AVAHI_DNS_TYPE_AAAA: assert(!(r->user_flags & AVAHI_LOOKUP_NO_ADDRESS)); if (!r->address_record) { r->address_record = avahi_record_ref(record); changed = 1; } break; default: abort(); } if (changed && r->srv_record && (r->txt_record || (r->user_flags & AVAHI_LOOKUP_NO_TXT)) && (r->address_record || (r->user_flags & AVAHI_LOOKUP_NO_ADDRESS))) finish(r, AVAHI_RESOLVER_FOUND); break; } case AVAHI_BROWSER_REMOVE: assert(record); switch (record->key->type) { case AVAHI_DNS_TYPE_SRV: if (r->srv_record && avahi_record_equal_no_ttl(record, r->srv_record)) { avahi_record_unref(r->srv_record); r->srv_record = NULL; if (r->record_browser_a) { avahi_s_record_browser_free(r->record_browser_a); r->record_browser_a = NULL; } if (r->record_browser_aaaa) { avahi_s_record_browser_free(r->record_browser_aaaa); r->record_browser_aaaa = NULL; } /** Look for a replacement */ avahi_s_record_browser_restart(r->record_browser_srv); start_timeout(r); } break; case AVAHI_DNS_TYPE_TXT: assert(!(r->user_flags & AVAHI_LOOKUP_NO_TXT)); if (r->txt_record && avahi_record_equal_no_ttl(record, r->txt_record)) { avahi_record_unref(r->txt_record); r->txt_record = NULL; /** Look for a replacement */ avahi_s_record_browser_restart(r->record_browser_txt); start_timeout(r); } break; case AVAHI_DNS_TYPE_A: case AVAHI_DNS_TYPE_AAAA: assert(!(r->user_flags & AVAHI_LOOKUP_NO_ADDRESS)); if (r->address_record && avahi_record_equal_no_ttl(record, r->address_record)) { avahi_record_unref(r->address_record); r->address_record = NULL; /** Look for a replacement */ if (r->record_browser_aaaa) avahi_s_record_browser_restart(r->record_browser_aaaa); if (r->record_browser_a) avahi_s_record_browser_restart(r->record_browser_a); start_timeout(r); } break; default: abort(); } break; case AVAHI_BROWSER_CACHE_EXHAUSTED: case AVAHI_BROWSER_ALL_FOR_NOW: break; case AVAHI_BROWSER_FAILURE: if (rr == r->record_browser_a && r->record_browser_aaaa) { /* We were looking for both AAAA and A, and the other query is still living, so we'll not die */ avahi_s_record_browser_free(r->record_browser_a); r->record_browser_a = NULL; break; } if (rr == r->record_browser_aaaa && r->record_browser_a) { /* We were looking for both AAAA and A, and the other query is still living, so we'll not die */ avahi_s_record_browser_free(r->record_browser_aaaa); r->record_browser_aaaa = NULL; break; } /* Hmm, everything's lost, tell the user */ if (r->record_browser_srv) avahi_s_record_browser_free(r->record_browser_srv); if (r->record_browser_txt) avahi_s_record_browser_free(r->record_browser_txt); if (r->record_browser_a) avahi_s_record_browser_free(r->record_browser_a); if (r->record_browser_aaaa) avahi_s_record_browser_free(r->record_browser_aaaa); r->record_browser_srv = r->record_browser_txt = r->record_browser_a = r->record_browser_aaaa = NULL; finish(r, AVAHI_RESOLVER_FAILURE); break; } }
static void record_browser_callback( AvahiSRecordBrowser*rr, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, AvahiRecord *record, AvahiLookupResultFlags flags, void* userdata) { AvahiSAddressResolver *r = userdata; assert(rr); assert(r); switch (event) { case AVAHI_BROWSER_NEW: assert(record); assert(record->key->type == AVAHI_DNS_TYPE_PTR); if (flags & AVAHI_LOOKUP_RESULT_LLMNR) r->llmnr_has_record = 1; if (r->interface > 0 && interface != r->interface) return; if (r->protocol != AVAHI_PROTO_UNSPEC && protocol != r->protocol) return; if (r->interface <= 0) r->interface = interface; if (r->protocol == AVAHI_PROTO_UNSPEC) r->protocol = protocol; if (!r->ptr_record) { r->ptr_record = avahi_record_ref(record); r->flags = flags; finish(r, AVAHI_RESOLVER_FOUND); } break; case AVAHI_BROWSER_REMOVE: assert(record); assert(record->key->type == AVAHI_DNS_TYPE_PTR); if (r->ptr_record && avahi_record_equal_no_ttl(record, r->ptr_record)) { avahi_record_unref(r->ptr_record); r->ptr_record = NULL; r->flags = flags; /** Look for a replacement */ avahi_s_record_browser_restart(r->record_browser); start_timeout(r); } break; case AVAHI_BROWSER_CACHE_EXHAUSTED: break; case AVAHI_BROWSER_ALL_FOR_NOW: /* when called by _LLMNR we trigger lookup by _MULTICAST*/ if ((flags & AVAHI_LOOKUP_RESULT_LLMNR) && (r->retry_with_multicast) && !r->llmnr_has_record) { r->retry_with_multicast = 0; avahi_s_record_browser_free(r->record_browser); r->record_browser = avahi_s_record_browser_new(r->server, r->interface, r->protocol, r->key, AVAHI_LOOKUP_USE_MULTICAST, record_browser_callback, r); if (r->record_browser) { start_timeout(r); break; } } break; case AVAHI_BROWSER_FAILURE: if (r->retry_with_llmnr) { r->retry_with_llmnr = 0; avahi_s_record_browser_free(r->record_browser); r->record_browser = avahi_s_record_browser_new(r->server, r->interface, r->protocol, r->key, AVAHI_LOOKUP_USE_LLMNR, record_browser_callback, r); if (r->record_browser) { start_timeout(r); break; } } break; } }