4 This file is part of avahi.
6 avahi is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 avahi is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
14 Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with avahi; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include <avahi-common/timeval.h>
27 #include <avahi-common/malloc.h>
28 #include <avahi-common/error.h>
32 struct AvahiSAddressResolver {
36 AvahiSRecordBrowser *record_browser;
38 AvahiSAddressResolverCallback callback;
41 AvahiTimeEvent *time_event;
43 AVAHI_LLIST_FIELDS(AvahiSAddressResolver, resolver);
46 static void finish(AvahiSAddressResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, AvahiRecord *record) {
49 avahi_s_record_browser_free(r->record_browser);
50 r->record_browser = NULL;
53 avahi_time_event_free(r->time_event);
57 r->callback(r, interface, protocol, event, &r->address, record ? record->data.ptr.name : NULL, r->userdata);
60 static void record_browser_callback(AvahiSRecordBrowser*rr, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, AvahiRecord *record, void* userdata) {
61 AvahiSAddressResolver *r = userdata;
67 if (!(event == AVAHI_BROWSER_NEW))
70 assert(record->key->type == AVAHI_DNS_TYPE_PTR);
72 finish(r, interface, protocol, AVAHI_RESOLVER_FOUND, record);
75 static void time_event_callback(AvahiTimeEvent *e, void *userdata) {
76 AvahiSAddressResolver *r = userdata;
81 finish(r, -1, AVAHI_PROTO_UNSPEC, AVAHI_RESOLVER_TIMEOUT, NULL);
84 AvahiSAddressResolver *avahi_s_address_resolver_new(AvahiServer *server, AvahiIfIndex interface, AvahiProtocol protocol, const AvahiAddress *address, AvahiSAddressResolverCallback callback, void* userdata) {
85 AvahiSAddressResolver *r;
94 assert(address->family == AVAHI_PROTO_INET || address->family == AVAHI_PROTO_INET6);
96 if (address->family == AVAHI_PROTO_INET)
97 n = avahi_reverse_lookup_name_ipv4(&address->data.ipv4);
99 n = avahi_reverse_lookup_name_ipv6_arpa(&address->data.ipv6);
102 avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
106 k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR);
110 avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
114 if (!(r = avahi_new(AvahiSAddressResolver, 1))) {
115 avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
121 r->address = *address;
122 r->callback = callback;
123 r->userdata = userdata;
125 r->record_browser = NULL;
126 AVAHI_LLIST_PREPEND(AvahiSAddressResolver, resolver, server->address_resolvers, r);
128 avahi_elapse_time(&tv, 1000, 0);
129 if (!(r->time_event = avahi_time_event_new(server->time_event_queue, &tv, time_event_callback, r))) {
130 avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY);
131 avahi_s_address_resolver_free(r);
136 r->record_browser = avahi_s_record_browser_new(server, interface, protocol, k, record_browser_callback, r);
139 if (!r->record_browser) {
140 avahi_s_address_resolver_free(r);
147 void avahi_s_address_resolver_free(AvahiSAddressResolver *r) {
150 AVAHI_LLIST_REMOVE(AvahiSAddressResolver, resolver, r->server->address_resolvers, r);
152 if (r->record_browser)
153 avahi_s_record_browser_free(r->record_browser);
156 avahi_time_event_free(r->time_event);