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
29 struct AvahiAddressResolver {
33 AvahiRecordBrowser *record_browser;
35 AvahiAddressResolverCallback callback;
38 AvahiTimeEvent *time_event;
40 AVAHI_LLIST_FIELDS(AvahiAddressResolver, resolver);
43 static void finish(AvahiAddressResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, AvahiRecord *record) {
46 avahi_record_browser_free(r->record_browser);
47 r->record_browser = NULL;
50 avahi_time_event_queue_remove(r->server->time_event_queue, r->time_event);
54 r->callback(r, interface, protocol, event, &r->address, record ? record->data.ptr.name : NULL, r->userdata);
57 static void record_browser_callback(AvahiRecordBrowser*rr, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, AvahiRecord *record, gpointer userdata) {
58 AvahiAddressResolver *r = userdata;
64 if (!(event == AVAHI_BROWSER_NEW))
67 g_assert(record->key->type == AVAHI_DNS_TYPE_PTR);
69 finish(r, interface, protocol, AVAHI_RESOLVER_FOUND, record);
72 static void time_event_callback(AvahiTimeEvent *e, void *userdata) {
73 AvahiAddressResolver *r = userdata;
78 finish(r, -1, AVAHI_PROTO_UNSPEC, AVAHI_RESOLVER_TIMEOUT, NULL);
81 AvahiAddressResolver *avahi_address_resolver_new(AvahiServer *server, AvahiIfIndex interface, AvahiProtocol protocol, const AvahiAddress *address, AvahiAddressResolverCallback callback, gpointer userdata) {
82 AvahiAddressResolver *r;
91 g_assert(address->family == AVAHI_PROTO_INET || address->family == AVAHI_PROTO_INET6);
93 r = g_new(AvahiAddressResolver, 1);
95 r->address = *address;
96 r->callback = callback;
97 r->userdata = userdata;
99 avahi_elapse_time(&tv, 1000, 0);
100 r->time_event = avahi_time_event_queue_add(server->time_event_queue, &tv, time_event_callback, r);
102 AVAHI_LLIST_PREPEND(AvahiAddressResolver, resolver, server->address_resolvers, r);
104 if (address->family == AVAHI_PROTO_INET)
105 n = avahi_reverse_lookup_name_ipv4(&address->data.ipv4);
107 n = avahi_reverse_lookup_name_ipv6_arpa(&address->data.ipv6);
109 k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR);
112 r->record_browser = avahi_record_browser_new(server, interface, protocol, k, record_browser_callback, r);
118 void avahi_address_resolver_free(AvahiAddressResolver *r) {
121 AVAHI_LLIST_REMOVE(AvahiAddressResolver, resolver, r->server->address_resolvers, r);
123 if (r->record_browser)
124 avahi_record_browser_free(r->record_browser);
127 avahi_time_event_queue_remove(r->server->time_event_queue, r->time_event);