/*
process.c -- process management functions
Copyright (C) 1999-2005 Ivo Timmermans,
- 2000-2007 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2011 Guus Sliepen <guus@tinc-vpn.org>
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
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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
+ 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 "device.h"
#include "edge.h"
#include "logger.h"
+#include "net.h"
#include "node.h"
#include "process.h"
#include "subnet.h"
extern char **g_argv;
extern bool use_logfile;
-sigset_t emptysigset;
-
-static void memory_full(int size) {
- logger(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exitting."), size);
- cp_trace();
- exit(1);
-}
-
/* Some functions the less gifted operating systems might lack... */
#ifdef HAVE_MINGW
manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if(!manager) {
- logger(LOG_ERR, _("Could not open service manager: %s"), winerror(GetLastError()));
+ logger(LOG_ERR, "Could not open service manager: %s", winerror(GetLastError()));
return false;
}
command, NULL, NULL, NULL, NULL, NULL);
if(!service) {
- logger(LOG_ERR, _("Could not create %s service: %s"), identname, winerror(GetLastError()));
- return false;
+ DWORD lasterror = GetLastError();
+ logger(LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror));
+ if(lasterror != ERROR_SERVICE_EXISTS)
+ return false;
}
- ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
-
- logger(LOG_INFO, _("%s service installed"), identname);
+ if(service) {
+ ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
+ logger(LOG_INFO, "%s service installed", identname);
+ } else {
+ service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
+ }
if(!StartService(service, 0, NULL))
- logger(LOG_WARNING, _("Could not start %s service: %s"), identname, winerror(GetLastError()));
+ logger(LOG_WARNING, "Could not start %s service: %s", identname, winerror(GetLastError()));
else
- logger(LOG_INFO, _("%s service started"), identname);
+ logger(LOG_INFO, "%s service started", identname);
return true;
}
bool remove_service(void) {
manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if(!manager) {
- logger(LOG_ERR, _("Could not open service manager: %s"), winerror(GetLastError()));
+ logger(LOG_ERR, "Could not open service manager: %s", winerror(GetLastError()));
return false;
}
service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
if(!service) {
- logger(LOG_ERR, _("Could not open %s service: %s"), identname, winerror(GetLastError()));
+ logger(LOG_ERR, "Could not open %s service: %s", identname, winerror(GetLastError()));
return false;
}
if(!ControlService(service, SERVICE_CONTROL_STOP, &status))
- logger(LOG_ERR, _("Could not stop %s service: %s"), identname, winerror(GetLastError()));
+ logger(LOG_ERR, "Could not stop %s service: %s", identname, winerror(GetLastError()));
else
- logger(LOG_INFO, _("%s service stopped"), identname);
+ logger(LOG_INFO, "%s service stopped", identname);
if(!DeleteService(service)) {
- logger(LOG_ERR, _("Could not remove %s service: %s"), identname, winerror(GetLastError()));
+ logger(LOG_ERR, "Could not remove %s service: %s", identname, winerror(GetLastError()));
return false;
}
- logger(LOG_INFO, _("%s service removed"), identname);
+ logger(LOG_INFO, "%s service removed", identname);
return true;
}
SetServiceStatus(statushandle, &status);
return NO_ERROR;
case SERVICE_CONTROL_STOP:
- logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_STOP");
+ logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_STOP");
break;
case SERVICE_CONTROL_SHUTDOWN:
- logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_SHUTDOWN");
+ logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN");
break;
default:
- logger(LOG_WARNING, _("Got unexpected request %d"), request);
+ logger(LOG_WARNING, "Got unexpected request %d", request);
return ERROR_CALL_NOT_IMPLEMENTED;
}
statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
if (!statushandle) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
+ logger(LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
err = 1;
} else {
status.dwWaitHint = 30000;
return false;
}
else
- logger(LOG_ERR, _("System call `%s' failed: %s"), "StartServiceCtrlDispatcher", winerror(GetLastError()));
+ logger(LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError()));
}
return true;
Detach from current terminal
*/
bool detach(void) {
- cp();
-
- setup_signals();
-
#ifndef HAVE_MINGW
+ signal(SIGALRM, SIG_IGN);
+ signal(SIGPIPE, SIG_IGN);
+ signal(SIGUSR1, SIG_IGN);
+ signal(SIGUSR2, SIG_IGN);
+ signal(SIGWINCH, SIG_IGN);
+
closelogger();
#endif
if(do_detach) {
#ifndef HAVE_MINGW
if(daemon(0, 0)) {
- fprintf(stderr, _("Couldn't detach from terminal: %s"),
+ fprintf(stderr, "Couldn't detach from terminal: %s",
strerror(errno));
return false;
}
openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
- logger(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
+ logger(LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
VERSION, __DATE__, __TIME__, debug_level);
- xalloc_fail_func = memory_full;
-
return true;
}
bool execute_script(const char *name, char **envp) {
#ifdef HAVE_SYSTEM
int status, len;
- char *scriptname, *p;
+ char *scriptname;
int i;
- cp();
-
#ifndef HAVE_MINGW
len = xasprintf(&scriptname, "\"%s/%s\"", confbase, name);
#else
}
#endif
- ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name);
+ ifdebug(STATUS) logger(LOG_INFO, "Executing script %s", name);
#ifdef HAVE_PUTENV
/* Set environment */
for(i = 0; envp[i]; i++) {
char *e = strchr(envp[i], '=');
if(e) {
- p = alloca(e - envp[i] + 1);
+ char p[e - envp[i] + 1];
strncpy(p, envp[i], e - envp[i]);
p[e - envp[i]] = '\0';
putenv(p);
if(status != -1) {
if(WIFEXITED(status)) { /* Child exited by itself */
if(WEXITSTATUS(status)) {
- logger(LOG_ERR, _("Script %s exited with non-zero status %d"),
+ logger(LOG_ERR, "Script %s exited with non-zero status %d",
name, WEXITSTATUS(status));
return false;
}
} else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
- logger(LOG_ERR, _("Script %s was killed by signal %d (%s)"),
+ logger(LOG_ERR, "Script %s was killed by signal %d (%s)",
name, WTERMSIG(status), strsignal(WTERMSIG(status)));
return false;
} else { /* Something strange happened */
- logger(LOG_ERR, _("Script %s terminated abnormally"), name);
+ logger(LOG_ERR, "Script %s terminated abnormally", name);
return false;
}
} else {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "system", strerror(errno));
+ logger(LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));
return false;
}
#endif
#endif
return true;
}
-
-
-/*
- Signal handlers.
-*/
-
-#ifndef HAVE_MINGW
-static RETSIGTYPE fatal_signal_square(int a) {
- logger(LOG_ERR, _("Got another fatal signal %d (%s): not restarting."), a,
- strsignal(a));
- cp_trace();
- exit(1);
-}
-
-static RETSIGTYPE fatal_signal_handler(int a) {
- struct sigaction act;
- logger(LOG_ERR, _("Got fatal signal %d (%s)"), a, strsignal(a));
- cp_trace();
-
- if(do_detach) {
- logger(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
-
- act.sa_handler = fatal_signal_square;
- act.sa_mask = emptysigset;
- act.sa_flags = 0;
- sigaction(SIGSEGV, &act, NULL);
-
- close_network_connections();
- sleep(5);
- exit_control();
- execvp(g_argv[0], g_argv);
- } else {
- logger(LOG_NOTICE, _("Not restarting."));
- exit(1);
- }
-}
-
-static RETSIGTYPE unexpected_signal_handler(int a) {
- logger(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
- cp_trace();
-}
-
-static RETSIGTYPE ignore_signal_handler(int a) {
- ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Ignored signal %d (%s)"), a, strsignal(a));
-}
-
-static struct {
- int signal;
- void (*handler)(int);
-} sighandlers[] = {
- {SIGSEGV, fatal_signal_handler},
- {SIGBUS, fatal_signal_handler},
- {SIGILL, fatal_signal_handler},
- {SIGPIPE, ignore_signal_handler},
- {SIGCHLD, ignore_signal_handler},
- {0, NULL}
-};
-#endif
-
-void setup_signals(void) {
-#ifndef HAVE_MINGW
- int i;
- struct sigaction act;
-
- sigemptyset(&emptysigset);
- act.sa_handler = NULL;
- act.sa_mask = emptysigset;
- act.sa_flags = 0;
-
- /* Set a default signal handler for every signal, errors will be
- ignored. */
- for(i = 1; i < NSIG; i++) {
- if(!do_detach)
- act.sa_handler = SIG_DFL;
- else
- act.sa_handler = unexpected_signal_handler;
- sigaction(i, &act, NULL);
- }
-
- /* If we didn't detach, allow coredumps */
- if(!do_detach)
- sighandlers[0].handler = SIG_DFL;
-
- /* Then, for each known signal that we want to catch, assign a
- handler to the signal, with error checking this time. */
- for(i = 0; sighandlers[i].signal; i++) {
- act.sa_handler = sighandlers[i].handler;
- if(sigaction(sighandlers[i].signal, &act, NULL) < 0)
- fprintf(stderr, _("Installing signal handler for signal %d (%s) failed: %s\n"),
- sighandlers[i].signal, strsignal(sighandlers[i].signal),
- strerror(errno));
- }
-#endif
-}