git.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 "names.h"
  25 #include "xalloc.h"
  26
  27 char *netname = NULL;
  28 char *confdir = NULL;           /* base configuration directory */
  29 char *confbase = NULL;          /* base configuration directory for this instance of tinc */
  30 bool confbase_given;
  31 char *identname = NULL;         /* program name for syslog */
  32 char *unixsocketname = NULL;    /* UNIX socket location */
  33 char *logfilename = NULL;       /* log file location */
  34 char *pidfilename = NULL;
  35 char *program_name = NULL;
  36
  37 /*
  38   Set all files and paths according to netname
  39 */
  40 void make_names(bool daemon) {
  41 #ifdef HAVE_MINGW
  42         HKEY key;
  43         char installdir[1024] = "";
  44         DWORD len = sizeof installdir;
  45 #endif
  46         confbase_given = confbase;
  47
  48         if(netname && confbase)
  49                 logger(DEBUG_ALWAYS, LOG_INFO, "Both netname and configuration directory given, using the latter...");
  50
  51         if(netname)
  52                 xasprintf(&identname, "tinc.%s", netname);
  53         else
  54                 identname = xstrdup("tinc");
  55
  56 #ifdef HAVE_MINGW
  57         if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
  58                 if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) {
  59                         confdir = xstrdup(installdir);
  60                         if(!confbase) {
  61                                 if(netname)
  62                                         xasprintf(&confbase, "%s" SLASH "%s", installdir, netname);
  63                                 else
  64                                         xasprintf(&confbase, "%s", installdir);
  65                         }
  66                         if(!logfilename)
  67                                 xasprintf(&logfilename, "%s" SLASH "tinc.log", confbase);
  68                 }
  69                 RegCloseKey(key);
  70         }
  71 #endif
  72         if(!confdir)
  73                 confdir = xstrdup(CONFDIR SLASH "tinc");
  74
  75         if(!confbase) {
  76                 if(netname)
  77                         xasprintf(&confbase, CONFDIR SLASH "tinc" SLASH "%s", netname);
  78                 else
  79                         xasprintf(&confbase, CONFDIR SLASH "tinc");
  80         }
  81
  82 #ifdef HAVE_MINGW
  83         if(!logfilename)
  84                 xasprintf(&logfilename, "%s" SLASH "log", confbase);
  85
  86         if(!pidfilename)
  87                 xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
  88 #else
  89         bool fallback = false;
  90         if(daemon) {
  91                 if(access(LOCALSTATEDIR, R_OK | W_OK | X_OK))
  92                         fallback = true;
  93         } else {
  94                 char fname[PATH_MAX];
  95                 snprintf(fname, sizeof fname, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
  96                 if(access(fname, R_OK)) {
  97                         snprintf(fname, sizeof fname, "%s" SLASH "pid", confbase);
  98                         if(!access(fname, R_OK))
  99                                 fallback = true;
 100                 }
 101         }
 102
 103         if(!fallback) {
 104                 if(!logfilename)
 105                         xasprintf(&logfilename, LOCALSTATEDIR SLASH "log" SLASH "%s.log", identname);
 106
 107                 if(!pidfilename)
 108                         xasprintf(&pidfilename, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
 109         } else {
 110                 if(!logfilename)
 111                         xasprintf(&logfilename, "%s" SLASH "log", confbase);
 112
 113                 if(!pidfilename) {
 114                         if(daemon)
 115                                 logger(DEBUG_ALWAYS, LOG_WARNING, "Could not access " LOCALSTATEDIR SLASH " (%s), storing pid and socket files in %s" SLASH, strerror(errno), confbase);
 116                         xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
 117                 }
 118         }
 119 #endif
 120
 121         if(!unixsocketname) {
 122                 int len = strlen(pidfilename);
 123                 unixsocketname = xmalloc(len + 8);
 124                 memcpy(unixsocketname, pidfilename, len);
 125                 if(len > 4 && !strcmp(pidfilename + len - 4, ".pid"))
 126                         strncpy(unixsocketname + len - 4, ".socket", 8);
 127                 else
 128                         strncpy(unixsocketname + len, ".socket", 8);
 129         }
 130 }
 131
 132 void free_names(void) {
 133         free(identname);
 134         free(netname);
 135         free(unixsocketname);
 136         free(pidfilename);
 137         free(logfilename);
 138         free(confbase);
 139         free(confdir);
 140 }