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[disorder] / lib / hostname.c
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bb6ae3fb 1/*
2 * This file is part of DisOrder
3 * Copyright (C) 2007 Richard Kettlewell
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18 * USA
19 */
20
21#include <config.h>
22#include "types.h"
23
24#include <sys/utsname.h>
25#include <errno.h>
26#include <netdb.h>
27
28#include "mem.h"
29#include "hostname.h"
30#include "log.h"
31
32static const char *hostname;
33
34/** @brief Return the local hostname
35 * @return Hostname
36 */
37const char *local_hostname(void) {
38 if(!hostname) {
39 struct utsname u;
40 struct hostent *he;
41
42 if(uname(&u) < 0)
43 fatal(errno, "error calling uname");
44 if(!(he = gethostbyname(u.nodename)))
45 fatal(0, "cannot resolve '%s'", u.nodename);
46 hostname = xstrdup(he->h_name);
47 }
48 return hostname;
49}
50
51
52/*
53Local Variables:
54c-basic-offset:2
55comment-column:40
56fill-column:79
57indent-tabs-mode:nil
58End:
59*/