• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 #include <assert.h>
25 #include <limits.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <string.h>
29 
30 #include "xdg-config.h"
31 
32 #ifndef PATH_MAX
33 #define PATH_MAX 4096
34 #endif
35 
avahi_xdg_config_open(const char * filename)36 FILE *avahi_xdg_config_open(const char *filename) {
37     FILE *f;
38     const char *e, *d;
39     char fn[PATH_MAX], *p = NULL, buf[2048], *s = NULL;
40 
41     assert(filename);
42 
43     if ((e = getenv("XDG_CONFIG_HOME")) && *e)
44         snprintf(p = fn, sizeof(fn), "%s/%s", e, filename);
45     else if ((e = getenv("HOME")) && *e)
46         snprintf(p = fn, sizeof(fn), "%s/.config/%s", e, filename);
47 
48     if (p) {
49         if ((f = fopen(p, "r")))
50             return f;
51         else if (errno != ENOENT)
52             return NULL;
53     }
54 
55     if (!(d = getenv("XDG_CONFIG_DIRS")) || !*d)
56         d = "/etc/xdg";
57 
58     snprintf(buf, sizeof(buf), "%s", d);
59 
60     for (e = strtok_r(buf, ":", &s); e; e = strtok_r(NULL, ":", &s)) {
61         snprintf(fn, sizeof(fn), "%s/%s", e, filename);
62 
63         if ((f = fopen(fn, "r")))
64             return f;
65     }
66 
67     return NULL;
68 }
69