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names.c
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names.c
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/*
names.c -- generate commonly used (file)names
Copyright (C) 1998-2005 Ivo Timmermans
2000-2018 Guus Sliepen <[email protected]>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "system.h"
#include "logger.h"
#include "names.h"
#include "xalloc.h"
char *netname = NULL;
char *myname = NULL;
char *confdir = NULL; /* base configuration directory */
char *confbase = NULL; /* base configuration directory for this instance of tinc */
bool confbase_given;
char *identname = NULL; /* program name for syslog */
char *unixsocketname = NULL; /* UNIX socket location */
char *logfilename = NULL; /* log file location */
char *pidfilename = NULL;
char *program_name = NULL;
/*
Set all files and paths according to netname
*/
void make_names(bool daemon) {
#ifdef HAVE_WINDOWS
HKEY key;
char installdir[1024] = "";
DWORD len = sizeof(installdir);
#endif
confbase_given = confbase;
if(netname && confbase) {
logger(DEBUG_ALWAYS, LOG_INFO, "Both netname and configuration directory given, using the latter...");
}
free(identname);
if(netname) {
xasprintf(&identname, "tinc.%s", netname);
} else {
identname = xstrdup("tinc");
}
#ifdef HAVE_WINDOWS
if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
if(!RegQueryValueEx(key, NULL, 0, 0, (LPBYTE)installdir, &len)) {
confdir = xstrdup(installdir);
if(!confbase) {
if(netname) {
xasprintf(&confbase, "%s" SLASH "%s", installdir, netname);
} else {
xasprintf(&confbase, "%s", installdir);
}
}
if(!logfilename) {
xasprintf(&logfilename, "%s" SLASH "tinc.log", confbase);
}
}
RegCloseKey(key);
}
#endif
if(!confdir) {
confdir = xstrdup(CONFDIR SLASH "tinc");
}
if(!confbase) {
if(netname) {
xasprintf(&confbase, CONFDIR SLASH "tinc" SLASH "%s", netname);
} else {
xasprintf(&confbase, CONFDIR SLASH "tinc");
}
}
#ifdef HAVE_WINDOWS
(void)daemon;
if(!logfilename) {
xasprintf(&logfilename, "%s" SLASH "log", confbase);
}
if(!pidfilename) {
xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
}
#else
bool fallback = false;
if(daemon) {
if(access(LOCALSTATEDIR, R_OK | W_OK | X_OK)) {
fallback = true;
}
} else {
char fname[PATH_MAX];
snprintf(fname, sizeof(fname), LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
if(access(fname, R_OK)) {
snprintf(fname, sizeof(fname), "%s" SLASH "pid", confbase);
if(!access(fname, R_OK)) {
fallback = true;
}
}
}
if(!fallback) {
if(!logfilename) {
xasprintf(&logfilename, LOCALSTATEDIR SLASH "log" SLASH "%s.log", identname);
}
if(!pidfilename) {
xasprintf(&pidfilename, LOCALSTATEDIR SLASH "run" SLASH "%s.pid", identname);
}
} else {
if(!logfilename) {
xasprintf(&logfilename, "%s" SLASH "log", confbase);
}
if(!pidfilename) {
if(daemon) {
logger(DEBUG_ALWAYS, LOG_WARNING, "Could not access " LOCALSTATEDIR SLASH " (%s), storing pid and socket files in %s" SLASH, strerror(errno), confbase);
}
xasprintf(&pidfilename, "%s" SLASH "pid", confbase);
}
}
#endif
if(!unixsocketname) {
size_t len = strlen(pidfilename);
unixsocketname = xmalloc(len + 8);
memcpy(unixsocketname, pidfilename, len);
if(len > 4 && !strcmp(pidfilename + len - 4, ".pid")) {
strncpy(unixsocketname + len - 4, ".socket", 8);
} else {
strncpy(unixsocketname + len, ".socket", 8);
}
}
}
void free_names(void) {
free(identname);
free(netname);
free(unixsocketname);
free(pidfilename);
free(logfilename);
free(confbase);
free(confdir);
free(myname);
identname = NULL;
netname = NULL;
unixsocketname = NULL;
pidfilename = NULL;
logfilename = NULL;
confbase = NULL;
confdir = NULL;
myname = NULL;
}