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 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
