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
|
/* $Id$ */
/***
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 <string.h>
#include "browse.h"
#include "util.h"
struct AvahiServiceBrowser {
AvahiServer *server;
gchar *domain_name;
gchar *service_type;
AvahiRecordBrowser *record_browser;
AvahiServiceBrowserCallback callback;
gpointer userdata;
AVAHI_LLIST_FIELDS(AvahiServiceBrowser, browser);
};
static void record_browser_callback(AvahiRecordBrowser*rr, gint interface, guchar protocol, AvahiBrowserEvent event, AvahiRecord *record, gpointer userdata) {
AvahiServiceBrowser *b = userdata;
gchar *n, *e, *c, *s;
gchar service[128];
g_assert(rr);
g_assert(record);
g_assert(b);
g_assert(record->key->type == AVAHI_DNS_TYPE_PTR);
c = n = avahi_normalize_name(record->data.ptr.name);
if (!(avahi_unescape_label((const gchar**) &c, service, sizeof(service))))
goto fail;
for (s = e = c; *c == '_';) {
c += strcspn(c, ".");
if (*c == 0)
goto fail;
g_assert(*c == '.');
e = c;
c++;
}
*e = 0;
if (!avahi_domain_equal(c, b->domain_name))
goto fail;
b->callback(b, interface, protocol, event, service, s, c, b->userdata);
g_free(n);
return;
fail:
g_warning("Invalid service '%s'", n);
g_free(n);
}
AvahiServiceBrowser *avahi_service_browser_new(AvahiServer *server, gint interface, guchar protocol, const gchar *service_type, const gchar *domain, AvahiServiceBrowserCallback callback, gpointer userdata) {
AvahiServiceBrowser *b;
AvahiKey *k;
gchar *n = NULL;
g_assert(server);
g_assert(callback);
g_assert(service_type);
b = g_new(AvahiServiceBrowser, 1);
b->server = server;
b->domain_name = avahi_normalize_name(domain ? domain : "local.");
b->service_type = avahi_normalize_name(service_type);
b->callback = callback;
b->userdata = userdata;
n = g_strdup_printf("%s%s", b->service_type, b->domain_name);
k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR);
g_free(n);
b->record_browser = avahi_record_browser_new(server, interface, protocol, k, record_browser_callback, b);
avahi_key_unref(k);
AVAHI_LLIST_PREPEND(AvahiServiceBrowser, browser, server->service_browsers, b);
return b;
}
void avahi_service_browser_free(AvahiServiceBrowser *b) {
g_assert(b);
AVAHI_LLIST_REMOVE(AvahiServiceBrowser, browser, b->server->service_browsers, b);
avahi_record_browser_free(b->record_browser);
g_free(b->domain_name);
g_free(b->service_type);
g_free(b);
}
|
