1 /***
2 This file is part of avahi.
3
4 avahi is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Lesser General Public License as
6 published by the Free Software Foundation; either version 2.1 of the
7 License, or (at your option) any later version.
8
9 avahi is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
12 Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with avahi; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
17 USA.
18 ***/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #ifdef HAVE_DLOPEN
25 #include <dlfcn.h>
26 #endif
27 #include <stdlib.h>
28
29 #include "client.h"
30
avahi_nss_support(void)31 int avahi_nss_support(void) {
32 int b = 0;
33
34 #ifdef HAVE_DLOPEN
35 static const char * const libs[] = {
36 "nss_mdns.so.1",
37 "libnss_mdns.so.2",
38 "libnss_mdns4.so.2",
39 "libnss_mdns6.so.2",
40 NULL };
41
42 const char * const *l;
43
44 for (l = libs; *l; l++) {
45 void *dl;
46
47 if ((dl = dlopen(*l, RTLD_LAZY))) {
48 b = 1;
49 dlclose(dl);
50 break;
51 }
52 }
53 #endif
54
55 return b;
56 }
57