tinc-vpn.org Git - tinc/blob - src/names.c

   1 /*
   2     names.c -- generate commonly used (file)names
   3     Copyright (C) 1998-2005 Ivo Timmermans
   4                   2000-2015 Guus Sliepen <guus@tinc-vpn.org>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License along
  17     with this program; if not, write to the Free Software Foundation, Inc.,
  18     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 */
  20
  21 #include "system.h"
  22
  23 #include "logger.h"
  24 #include "xalloc.h"
  25
  26 char *netname = NULL;
  27 char *confdir = NULL;           /* base configuration directory */
  28 char *confbase = NULL;          /* base configuration directory for this instance of tinc */
  29 bool confbase_given;
  30 char *identname = NULL;         /* program name for syslog */
  31 char *unixsocketname = NULL;    /* UNIX socket location */
  32 char *logfilename = NULL;       /* log file location */
  33 char *pidfilename = NULL;
  34 char *program_name = NULL;
  35
  36 /*
  37   Set all files and paths according to netname
  38 */
  39 void make_names(bool daemon) {
  40 #ifdef HAVE_MINGW
  41         HKEY key;
  42         char installdir[1024] = "";
  43         DWORD len = sizeof installdir;
  44 #endif
  45         confbase_given = confbase;
  46
  47         if(netname && confbase)
  48                 logger(DEBUG_ALWAYS, LOG_INFO, "Both netname and configuration directory given, using the latter...");
  49
  50         if(netname)
  51                 xasprintf(&identname, "tinc.%s", netname);
  52         else
  53                 identname = xstrdup("tinc");
  54
  55 #ifdef HAVE_MINGW
  56         if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
  57                 if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) {
  58                         confdir = xstrdup(installdir);
  59                         if(!logfilename)
  60                                 xasprintf(&logfilename, "%s" SLASH "log" SLASH "%s.log", installdir, identname);
  61                         if(!confbase) {
  62                                 if(netname)
  63                                         xasprintf(&confbase, "%s" SLASH "%s", installdir, netname);
  64                                 else
  65                                         xasprintf(&confbase, "%s", installdir);
  66                         }
  67                 }
  68                 RegCloseKey(key);
  69         }
  70 #endif
  71         if(!confdir)
  72                 confdir = xstrdup(CONFDIR SLASH "tinc");
  73
  74         if(!confbase) {
  75                 if(netname)
  76                         xasprintf(&confbase, CONFDIR SLASH "tinc" SLASH "%s", netname);
  77                 else
  78                         xasprintf(&confbase, CONFDIR SLASH "tinc");
  79         }
  80
  81 #ifdef HAVE_MINGW
  82         if(!logfilename)
  83                 xasprintf(&logfilename, "%s" SLASH "log", confbase);
  84
  85         if(!pidfilename)
  86                 xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
  87 #else
  88         bool fallback = false;
  89         if(daemon) {
  90                 if(access(LOCALSTATEDIR, R_OK | W_OK | X_OK))
  91                         fallback = true;
  92         } else {
  93                 char fname[PATH_MAX];
  94                 snprintf(fname, sizeof fname, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
  95                 if(access(fname, R_OK)) {
  96                         snprintf(fname, sizeof fname, "%s" SLASH "pid", confbase);
  97                         if(!access(fname, R_OK))
  98                                 fallback = true;
  99                 }
 100         }
 101
 102         if(!fallback) {
 103                 if(!logfilename)
 104                         xasprintf(&logfilename, LOCALSTATEDIR SLASH "log" SLASH "%s.log", identname);
 105
 106                 if(!pidfilename)
 107                         xasprintf(&pidfilename, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
 108         } else {
 109                 if(!logfilename)
 110                         xasprintf(&logfilename, "%s" SLASH "log", confbase);
 111
 112                 if(!pidfilename) {
 113                         if(daemon)
 114                                 logger(DEBUG_ALWAYS, LOG_WARNING, "Could not access " LOCALSTATEDIR SLASH " (%s), storing pid and socket files in %s" SLASH, strerror(errno), confbase);
 115                         xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
 116                 }
 117         }
 118 #endif
 119
 120         if(!unixsocketname) {
 121                 int len = strlen(pidfilename);
 122                 unixsocketname = xmalloc(len + 8);
 123                 strcpy(unixsocketname, pidfilename);
 124                 if(len > 4 && !strcmp(pidfilename + len - 4, ".pid"))
 125                         strcpy(unixsocketname + len - 4, ".socket");
 126                 else
 127                         strcpy(unixsocketname + len, ".socket");
 128         }
 129 }
 130
 131 void free_names(void) {
 132         free(identname);
 133         free(netname);
 134         free(unixsocketname);
 135         free(pidfilename);
 136         free(logfilename);
 137         free(confbase);
 138         free(confdir);
 139 }