git.meshlink.io Git - catta/blob - avahi-core/resolve-host-name.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of avahi.
   5
   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.
  10
  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.
  15
  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
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include "resolve.h"
  27 #include "util.h"
  28
  29 struct AvahiHostNameResolver {
  30     AvahiServer *server;
  31     gchar *host_name;
  32
  33     AvahiRecordResolver *record_resolver_a;
  34     AvahiRecordResolver *record_resolver_aaaa;
  35
  36     AvahiHostNameResolverCallback callback;
  37     gpointer userdata;
  38
  39     AVAHI_LLIST_FIELDS(AvahiHostNameResolver, resolver);
  40 };
  41
  42 static void record_resolver_callback(AvahiRecordResolver*rr, gint interface, guchar protocol, AvahiBrowserEvent event, AvahiRecord *record, gpointer userdata) {
  43     AvahiHostNameResolver *r = userdata;
  44     AvahiAddress a;
  45
  46     g_assert(rr);
  47     g_assert(record);
  48     g_assert(r);
  49
  50     switch (record->key->type) {
  51         case AVAHI_DNS_TYPE_A:
  52             a.family = AF_INET;
  53             a.data.ipv4 = record->data.a.address;
  54             break;
  55
  56         case AVAHI_DNS_TYPE_AAAA:
  57             a.family = AF_INET6;
  58             a.data.ipv6 = record->data.aaaa.address;
  59             break;
  60
  61         default:
  62             g_assert(FALSE);
  63     }
  64
  65     r->callback(r, interface, protocol, event, record->key->name, &a, r->userdata);
  66 }
  67
  68 AvahiHostNameResolver *avahi_host_name_resolver_new(AvahiServer *s, gint interface, guchar protocol, const gchar *host_name, AvahiHostNameResolverCallback callback, gpointer userdata) {
  69     AvahiHostNameResolver *r;
  70     AvahiKey *k;
  71
  72     g_assert(s);
  73     g_assert(host_name);
  74     g_assert(callback);
  75
  76     r = g_new(AvahiHostNameResolver, 1);
  77     r->server = s;
  78     r->host_name = avahi_normalize_name(host_name);
  79     r->callback = callback;
  80     r->userdata = userdata;
  81
  82     k = avahi_key_new(host_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A);
  83     r->record_resolver_a = avahi_record_resolver_new(s, interface, protocol, k, record_resolver_callback, r);
  84     avahi_key_unref(k);
  85
  86     k = avahi_key_new(host_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA);
  87     r->record_resolver_aaaa = avahi_record_resolver_new(s, interface, protocol, k, record_resolver_callback, r);
  88     avahi_key_unref(k);
  89
  90     AVAHI_LLIST_PREPEND(AvahiHostNameResolver, resolver, s->host_name_resolvers, r);
  91
  92     return r;
  93 }
  94
  95 void avahi_host_name_resolver_free(AvahiHostNameResolver *r) {
  96     g_assert(r);
  97
  98     AVAHI_LLIST_REMOVE(AvahiHostNameResolver, resolver, r->server->host_name_resolvers, r);
  99
 100     avahi_record_resolver_free(r->record_resolver_a);
 101     avahi_record_resolver_free(r->record_resolver_aaaa);
 102     g_free(r->host_name);
 103     g_free(r);
 104 }