1/* $Id$ */ 2 3/*** 4 This file is part of avahi. 5 6 avahi is free software; you can redistribute it and/or modify it 7 under the terms of the GNU Lesser General Public License as 8 published by the Free Software Foundation; either version 2.1 of the 9 License, or (at your option) any later version. 10 11 avahi is distributed in the hope that it will be useful, but WITHOUT 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General 14 Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with avahi; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 19 USA. 20***/ 21 22#ifdef HAVE_CONFIG_H 23#include <config.h> 24#endif 25 26#include <assert.h> 27#include <limits.h> 28#include <stdlib.h> 29#include <errno.h> 30#include <string.h> 31 32#include "xdg-config.h" 33 34#ifndef PATH_MAX 35#define PATH_MAX 4096 36#endif 37 38FILE *avahi_xdg_config_open(const char *filename) { 39 FILE *f; 40 const char *e, *d; 41 char fn[PATH_MAX], *p = NULL, buf[2048], *s = NULL; 42 43 assert(filename); 44 45 if ((e = getenv("XDG_CONFIG_HOME")) && *e) 46 snprintf(p = fn, sizeof(fn), "%s/%s", e, filename); 47 else if ((e = getenv("HOME")) && *e) 48 snprintf(p = fn, sizeof(fn), "%s/.config/%s", e, filename); 49 50 if (p) { 51 if ((f = fopen(p, "r"))) 52 return f; 53 else if (errno != ENOENT) 54 return NULL; 55 } 56 57 if (!(d = getenv("XDG_CONFIG_DIRS")) || !*d) 58 d = "/etc/xdg"; 59 60 snprintf(buf, sizeof(buf), "%s", d); 61 62 for (e = strtok_r(buf, ":", &s); e; e = strtok_r(NULL, ":", &s)) { 63 snprintf(fn, sizeof(fn), "%s/%s", e, filename); 64 65 if ((f = fopen(fn, "r"))) 66 return f; 67 } 68 69 return NULL; 70} 71