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
31int avahi_nss_support(void) {
32    int b = 0;
33
34#ifdef HAVE_DLOPEN
35    static const char * const libs[] = {
36        "libnss_mdns.so.2",
37        "libnss_mdns4.so.2",
38        "libnss_mdns6.so.2",
39        NULL };
40
41    const char * const *l;
42
43    for (l = libs; *l; l++) {
44        void *dl;
45
46        if ((dl = dlopen(*l, RTLD_LAZY))) {
47            b = 1;
48            dlclose(dl);
49            break;
50        }
51    }
52#endif
53
54    return b;
55}
56