www.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                   2000-2017 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 *myname = NULL;
  29 char *confdir = NULL;           /* base configuration directory */
  30 char *confbase = NULL;          /* base configuration directory for this instance of tinc */
  31 bool confbase_given;
  32 char *identname = NULL;         /* program name for syslog */
  33 char *unixsocketname = NULL;    /* UNIX socket location */
  34 char *logfilename = NULL;       /* log file location */
  35 char *pidfilename = NULL;
  36 char *program_name = NULL;
  37
  38 /*
  39   Set all files and paths according to netname
  40 */
  41 void make_names(bool daemon) {
  42 #ifdef HAVE_MINGW
  43         HKEY key;
  44         char installdir[1024] = "";
  45         DWORD len = sizeof(installdir);
  46 #endif
  47         confbase_given = confbase;
  48
  49         if(netname && confbase)
  50                 logger(DEBUG_ALWAYS, LOG_INFO, "Both netname and configuration directory given, using the latter...");
  51
  52         if(netname)
  53                 xasprintf(&identname, "tinc.%s", netname);
  54         else
  55                 identname = xstrdup("tinc");
  56
  57 #ifdef HAVE_MINGW
  58         if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
  59                 if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) {
  60                         confdir = xstrdup(installdir);
  61                         if(!confbase) {
  62                                 if(netname)
  63                                         xasprintf(&confbase, "%s" SLASH "%s", installdir, netname);
  64                                 else
  65                                         xasprintf(&confbase, "%s", installdir);
  66                         }
  67                         if(!logfilename)
  68                                 xasprintf(&logfilename, "%s" SLASH "tinc.log", confbase);
  69                 }
  70                 RegCloseKey(key);
  71         }
  72 #endif
  73         if(!confdir)
  74                 confdir = xstrdup(CONFDIR SLASH "tinc");
  75
  76         if(!confbase) {
  77                 if(netname)
  78                         xasprintf(&confbase, CONFDIR SLASH "tinc" SLASH "%s", netname);
  79                 else
  80                         xasprintf(&confbase, CONFDIR SLASH "tinc");
  81         }
  82
  83 #ifdef HAVE_MINGW
  84         if(!logfilename)
  85                 xasprintf(&logfilename, "%s" SLASH "log", confbase);
  86
  87         if(!pidfilename)
  88                 xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
  89 #else
  90         bool fallback = false;
  91         if(daemon) {
  92                 if(access(LOCALSTATEDIR, R_OK | W_OK | X_OK))
  93                         fallback = true;
  94         } else {
  95                 char fname[PATH_MAX];
  96                 snprintf(fname, sizeof(fname), LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
  97                 if(access(fname, R_OK)) {
  98                         snprintf(fname, sizeof(fname), "%s" SLASH "pid", confbase);
  99                         if(!access(fname, R_OK))
 100                                 fallback = true;
 101                 }
 102         }
 103
 104         if(!fallback) {
 105                 if(!logfilename)
 106                         xasprintf(&logfilename, LOCALSTATEDIR SLASH "log" SLASH "%s.log", identname);
 107
 108                 if(!pidfilename)
 109                         xasprintf(&pidfilename, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
 110         } else {
 111                 if(!logfilename)
 112                         xasprintf(&logfilename, "%s" SLASH "log", confbase);
 113
 114                 if(!pidfilename) {
 115                         if(daemon)
 116                                 logger(DEBUG_ALWAYS, LOG_WARNING, "Could not access " LOCALSTATEDIR SLASH " (%s), storing pid and socket files in %s" SLASH, strerror(errno), confbase);
 117                         xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
 118                 }
 119         }
 120 #endif
 121
 122         if(!unixsocketname) {
 123                 int len = strlen(pidfilename);
 124                 unixsocketname = xmalloc(len + 8);
 125                 memcpy(unixsocketname, pidfilename, len);
 126                 if(len > 4 && !strcmp(pidfilename + len - 4, ".pid"))
 127                         strncpy(unixsocketname + len - 4, ".socket", 8);
 128                 else
 129                         strncpy(unixsocketname + len, ".socket", 8);
 130         }
 131 }
 132
 133 void free_names(void) {
 134         free(identname);
 135         free(netname);
 136         free(unixsocketname);
 137         free(pidfilename);
 138         free(logfilename);
 139         free(confbase);
 140         free(confdir);
 141         free(myname);
 142
 143         identname = NULL;
 144         netname = NULL;
 145         unixsocketname = NULL;
 146         pidfilename = NULL;
 147         logfilename = NULL;
 148         confbase = NULL;
 149         confdir = NULL;
 150         myname = NULL;
 151 }