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                   2000-2018 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
  53         free(identname);
  54
  55         if(netname) {
  56                 xasprintf(&identname, "tinc.%s", netname);
  57         } else {
  58                 identname = xstrdup("tinc");
  59         }
  60
  61 #ifdef HAVE_MINGW
  62
  63         if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
  64                 if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) {
  65                         confdir = xstrdup(installdir);
  66
  67                         if(!confbase) {
  68                                 if(netname) {
  69                                         xasprintf(&confbase, "%s" SLASH "%s", installdir, netname);
  70                                 } else {
  71                                         xasprintf(&confbase, "%s", installdir);
  72                                 }
  73                         }
  74
  75                         if(!logfilename) {
  76                                 xasprintf(&logfilename, "%s" SLASH "tinc.log", confbase);
  77                         }
  78                 }
  79
  80                 RegCloseKey(key);
  81         }
  82
  83 #endif
  84
  85         if(!confdir) {
  86                 confdir = xstrdup(CONFDIR SLASH "tinc");
  87         }
  88
  89         if(!confbase) {
  90                 if(netname) {
  91                         xasprintf(&confbase, CONFDIR SLASH "tinc" SLASH "%s", netname);
  92                 } else {
  93                         xasprintf(&confbase, CONFDIR SLASH "tinc");
  94                 }
  95         }
  96
  97 #ifdef HAVE_MINGW
  98         (void)daemon;
  99
 100         if(!logfilename) {
 101                 xasprintf(&logfilename, "%s" SLASH "log", confbase);
 102         }
 103
 104         if(!pidfilename) {
 105                 xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
 106         }
 107
 108 #else
 109         bool fallback = false;
 110
 111         if(daemon) {
 112                 if(access(LOCALSTATEDIR, R_OK | W_OK | X_OK)) {
 113                         fallback = true;
 114                 }
 115         } else {
 116                 char fname[PATH_MAX];
 117                 snprintf(fname, sizeof(fname), LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
 118
 119                 if(access(fname, R_OK)) {
 120                         snprintf(fname, sizeof(fname), "%s" SLASH "pid", confbase);
 121
 122                         if(!access(fname, R_OK)) {
 123                                 fallback = true;
 124                         }
 125                 }
 126         }
 127
 128         if(!fallback) {
 129                 if(!logfilename) {
 130                         xasprintf(&logfilename, LOCALSTATEDIR SLASH "log" SLASH "%s.log", identname);
 131                 }
 132
 133                 if(!pidfilename) {
 134                         xasprintf(&pidfilename, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
 135                 }
 136         } else {
 137                 if(!logfilename) {
 138                         xasprintf(&logfilename, "%s" SLASH "log", confbase);
 139                 }
 140
 141                 if(!pidfilename) {
 142                         if(daemon) {
 143                                 logger(DEBUG_ALWAYS, LOG_WARNING, "Could not access " LOCALSTATEDIR SLASH " (%s), storing pid and socket files in %s" SLASH, strerror(errno), confbase);
 144                         }
 145
 146                         xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
 147                 }
 148         }
 149
 150 #endif
 151
 152         if(!unixsocketname) {
 153                 size_t len = strlen(pidfilename);
 154                 unixsocketname = xmalloc(len + 8);
 155                 memcpy(unixsocketname, pidfilename, len);
 156
 157                 if(len > 4 && !strcmp(pidfilename + len - 4, ".pid")) {
 158                         strncpy(unixsocketname + len - 4, ".socket", 8);
 159                 } else {
 160                         strncpy(unixsocketname + len, ".socket", 8);
 161                 }
 162         }
 163 }
 164
 165 void free_names(void) {
 166         free(identname);
 167         free(netname);
 168         free(unixsocketname);
 169         free(pidfilename);
 170         free(logfilename);
 171         free(confbase);
 172         free(confdir);
 173         free(myname);
 174
 175         identname = NULL;
 176         netname = NULL;
 177         unixsocketname = NULL;
 178         pidfilename = NULL;
 179         logfilename = NULL;
 180         confbase = NULL;
 181         confdir = NULL;
 182         myname = NULL;
 183 }