1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/* $Id$ */
/***
This file is part of avahi.
avahi is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
avahi is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with avahi; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <avahi-common/timeval.h>
#include "browse.h"
struct AvahiAddressResolver {
AvahiServer *server;
AvahiAddress address;
AvahiRecordBrowser *record_browser;
AvahiAddressResolverCallback callback;
gpointer userdata;
AvahiTimeEvent *time_event;
AVAHI_LLIST_FIELDS(AvahiAddressResolver, resolver);
};
static void finish(AvahiAddressResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, AvahiRecord *record) {
g_assert(r);
avahi_record_browser_free(r->record_browser);
r->record_browser = NULL;
if (r->time_event) {
avahi_time_event_queue_remove(r->server->time_event_queue, r->time_event);
r->time_event = NULL;
}
r->callback(r, interface, protocol, event, &r->address, record ? record->data.ptr.name : NULL, r->userdata);
}
static void record_browser_callback(AvahiRecordBrowser*rr, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, AvahiRecord *record, gpointer userdata) {
AvahiAddressResolver *r = userdata;
g_assert(rr);
g_assert(record);
g_assert(r);
if (!(event == AVAHI_BROWSER_NEW))
return;
g_assert(record->key->type == AVAHI_DNS_TYPE_PTR);
finish(r, interface, protocol, AVAHI_RESOLVER_FOUND, record);
}
static void time_event_callback(AvahiTimeEvent *e, void *userdata) {
AvahiAddressResolver *r = userdata;
g_assert(e);
g_assert(r);
finish(r, -1, AVAHI_PROTO_UNSPEC, AVAHI_RESOLVER_TIMEOUT, NULL);
}
AvahiAddressResolver *avahi_address_resolver_new(AvahiServer *server, AvahiIfIndex interface, AvahiProtocol protocol, const AvahiAddress *address, AvahiAddressResolverCallback callback, gpointer userdata) {
AvahiAddressResolver *r;
AvahiKey *k;
gchar *n;
struct timeval tv;
g_assert(server);
g_assert(address);
g_assert(callback);
g_assert(address->family == AVAHI_PROTO_INET || address->family == AVAHI_PROTO_INET6);
r = g_new(AvahiAddressResolver, 1);
r->server = server;
r->address = *address;
r->callback = callback;
r->userdata = userdata;
avahi_elapse_time(&tv, 1000, 0);
r->time_event = avahi_time_event_queue_add(server->time_event_queue, &tv, time_event_callback, r);
AVAHI_LLIST_PREPEND(AvahiAddressResolver, resolver, server->address_resolvers, r);
if (address->family == AVAHI_PROTO_INET)
n = avahi_reverse_lookup_name_ipv4(&address->data.ipv4);
else
n = avahi_reverse_lookup_name_ipv6_arpa(&address->data.ipv6);
k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR);
g_free(n);
r->record_browser = avahi_record_browser_new(server, interface, protocol, k, record_browser_callback, r);
avahi_key_unref(k);
if (!r->record_browser) {
avahi_address_resolver_free(r);
return NULL;
}
return r;
}
void avahi_address_resolver_free(AvahiAddressResolver *r) {
g_assert(r);
AVAHI_LLIST_REMOVE(AvahiAddressResolver, resolver, r->server->address_resolvers, r);
if (r->record_browser)
avahi_record_browser_free(r->record_browser);
if (r->time_event)
avahi_time_event_queue_remove(r->server->time_event_queue, r->time_event);
g_free(r);
}
|
