/*
process.c -- process management functions
- Copyright (C) 1999-2003 Ivo Timmermans <ivo@o2w.nl>,
- 2000-2003 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 1999-2005 Ivo Timmermans,
+ 2000-2007 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: process.c,v 1.1.2.66 2003/08/08 17:17:13 guus Exp $
+ $Id$
*/
#include "system.h"
#include "conf.h"
#include "connection.h"
+#include "control.h"
#include "device.h"
#include "edge.h"
#include "logger.h"
#include "node.h"
-#include "pidfile.h"
#include "process.h"
#include "subnet.h"
#include "utils.h"
/* If zero, don't detach from the terminal. */
bool do_detach = true;
-bool sighup = false;
bool sigalrm = false;
extern char *identname;
-extern char *pidfilename;
extern char **g_argv;
extern bool use_logfile;
-extern volatile bool running;
sigset_t emptysigset;
-static int saved_debug_level = -1;
-
-static void memory_full(int size)
-{
+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... */
-#ifndef HAVE_FCLOSEALL
-static int fcloseall(void)
-{
- fflush(stdin);
- fflush(stdout);
- fflush(stderr);
- fclose(stdin);
- fclose(stdout);
- fclose(stderr);
- return 0;
-}
-#endif
-
#ifdef HAVE_MINGW
extern char *identname;
extern char *program_name;
static SERVICE_STATUS_HANDLE statushandle = 0;
bool install_service(void) {
- char command[4096] = "";
+ char command[4096] = "\"";
char **argp;
bool space;
+ SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if(!manager) {
}
if(!strchr(program_name, '\\')) {
- GetCurrentDirectory(sizeof(command), command);
- strncat(command, "\\", sizeof(command));
+ GetCurrentDirectory(sizeof command - 1, command + 1);
+ strncat(command, "\\", sizeof command - strlen(command));
}
- strncat(command, program_name, sizeof(command));
+ strncat(command, program_name, sizeof command - strlen(command));
+
+ strncat(command, "\"", sizeof command - strlen(command));
+
for(argp = g_argv + 1; *argp; argp++) {
- space = strchr(*argp, " ");
- strncat(command, " ", sizeof(command));
+ space = strchr(*argp, ' ');
+ strncat(command, " ", sizeof command - strlen(command));
+
if(space)
- strncat(command, "\"", sizeof(command));
- strncat(command, *argp, sizeof(command));
+ strncat(command, "\"", sizeof command - strlen(command));
+
+ strncat(command, *argp, sizeof command - strlen(command));
+
if(space)
- strncat(command, "\"", sizeof(command));
+ strncat(command, "\"", sizeof command - strlen(command));
}
service = CreateService(manager, identname, identname,
SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
- command, "NDIS", NULL, NULL, NULL, NULL);
+ command, NULL, NULL, NULL, NULL, NULL);
if(!service) {
logger(LOG_ERR, _("Could not create %s service: %s"), identname, winerror(GetLastError()));
return false;
}
+ ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
+
logger(LOG_INFO, _("%s service installed"), identname);
if(!StartService(service, 0, NULL))
DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) {
switch(request) {
+ case SERVICE_CONTROL_INTERROGATE:
+ SetServiceStatus(statushandle, &status);
+ return NO_ERROR;
case SERVICE_CONTROL_STOP:
logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_STOP");
- running = false;
break;
case SERVICE_CONTROL_SHUTDOWN:
logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_SHUTDOWN");
- running = false;
break;
default:
logger(LOG_WARNING, _("Got unexpected request %d"), request);
return ERROR_CALL_NOT_IMPLEMENTED;
}
- if(!running) {
- status.dwWaitHint = 30000;
- status.dwCurrentState = SERVICE_STOP_PENDING;
- SetServiceStatus(statushandle, &status);
- }
-
+ event_loopexit(NULL);
+ status.dwWaitHint = 30000;
+ status.dwCurrentState = SERVICE_STOP_PENDING;
+ SetServiceStatus(statushandle, &status);
return NO_ERROR;
}
-VOID WINAPI run_service(DWORD argc, LPTSTR* argv)
-{
+VOID WINAPI run_service(DWORD argc, LPTSTR* argv) {
int err = 1;
extern int main2(int argc, char **argv);
}
#endif
-#ifndef HAVE_MINGW
/*
- check for an existing tinc for this net, and write pid to pidfile
+ Detach from current terminal
*/
-static bool write_pidfile(void)
-{
- int pid;
-
- cp();
-
- pid = check_pid(pidfilename);
-
- if(pid) {
- if(netname)
- fprintf(stderr, _("A tincd is already running for net `%s' with pid %d.\n"),
- netname, pid);
- else
- fprintf(stderr, _("A tincd is already running with pid %d.\n"), pid);
- return false;
- }
-
- /* if it's locked, write-protected, or whatever */
- if(!write_pid(pidfilename))
- return false;
-
- return true;
-}
-#endif
-
-/*
- kill older tincd for this net
-*/
-bool kill_other(int signal)
-{
-#ifndef HAVE_MINGW
- int pid;
-
- cp();
-
- pid = read_pid(pidfilename);
-
- if(!pid) {
- if(netname)
- fprintf(stderr, _("No other tincd is running for net `%s'.\n"),
- netname);
- else
- fprintf(stderr, _("No other tincd is running.\n"));
- return false;
- }
-
- errno = 0; /* No error, sometimes errno is only changed on error */
-
- /* ESRCH is returned when no process with that pid is found */
- if(kill(pid, signal) && errno == ESRCH) {
- if(netname)
- fprintf(stderr, _("The tincd for net `%s' is no longer running. "),
- netname);
- else
- fprintf(stderr, _("The tincd is no longer running. "));
-
- fprintf(stderr, _("Removing stale lock file.\n"));
- remove_pid(pidfilename);
- }
-
- return true;
-#else
- return remove_service();
-#endif
-}
-
-/*
- Detach from current terminal, write pidfile, kill parent
-*/
-bool detach(void)
-{
+bool detach(void) {
cp();
setup_signals();
- /* First check if we can open a fresh new pidfile */
-
#ifndef HAVE_MINGW
- if(!write_pidfile())
- return false;
-
- /* If we succeeded in doing that, detach */
-
closelogger();
#endif
strerror(errno));
return false;
}
-
- /* Now UPDATE the pid in the pidfile, because we changed it... */
-
- if(!write_pid(pidfilename))
- return false;
#else
if(!statushandle)
exit(install_service());
return true;
}
-bool execute_script(const char *name, char **envp)
-{
+bool execute_script(const char *name, char **envp) {
#ifdef HAVE_SYSTEM
- pid_t pid;
- int status;
- struct stat s;
- char *scriptname;
+ int status, len;
+ char *scriptname, *p;
+ int i;
cp();
- asprintf(&scriptname, "%s/%s", confbase, name);
+#ifndef HAVE_MINGW
+ len = xasprintf(&scriptname, "\"%s/%s\"", confbase, name);
+#else
+ len = xasprintf(&scriptname, "\"%s/%s.bat\"", confbase, name);
+#endif
+ if(len < 0)
+ return false;
+ scriptname[len - 1] = '\0';
+
+#ifndef HAVE_TUNEMU
/* First check if there is a script */
- if(stat(scriptname, &s))
+ if(access(scriptname + 1, F_OK)) {
+ free(scriptname);
return true;
+ }
+#endif
+ ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name);
+
+#ifdef HAVE_PUTENV
/* Set environment */
- while(*envp)
- putenv(*envp++);
-
- ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name);
+ for(i = 0; envp[i]; i++)
+ putenv(envp[i]);
+#endif
+ scriptname[len - 1] = '\"';
status = system(scriptname);
free(scriptname);
- /* Unset environment? */
+ /* Unset environment */
+ for(i = 0; envp[i]; i++) {
+ char *e = strchr(envp[i], '=');
+ if(e) {
+ p = alloca(e - envp[i] + 1);
+ strncpy(p, envp[i], e - envp[i]);
+ p[e - envp[i]] = '\0';
+ putenv(p);
+ }
+ }
+
+#ifdef WEXITSTATUS
if(status != -1) {
if(WIFEXITED(status)) { /* Child exited by itself */
if(WEXITSTATUS(status)) {
- logger(LOG_ERR, _("Process %d (%s) exited with non-zero status %d"),
- pid, name, WEXITSTATUS(status));
+ 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, _("Process %d (%s) was killed by signal %d (%s)"), pid,
+ 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, _("Process %d (%s) terminated abnormally"), pid,
- 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;
}
*/
#ifndef HAVE_MINGW
-static RETSIGTYPE sigterm_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "TERM");
- running = false;
-}
-
-static RETSIGTYPE sigquit_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "QUIT");
- running = false;
-}
-
-static RETSIGTYPE fatal_signal_square(int a)
-{
+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)
-{
+static RETSIGTYPE fatal_signal_handler(int a) {
struct sigaction act;
logger(LOG_ERR, _("Got fatal signal %d (%s)"), a, strsignal(a));
cp_trace();
close_network_connections();
sleep(5);
- remove_pid(pidfilename);
+ exit_control();
execvp(g_argv[0], g_argv);
} else {
logger(LOG_NOTICE, _("Not restarting."));
}
}
-static RETSIGTYPE sighup_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "HUP");
- sighup = true;
-}
-
-static RETSIGTYPE sigint_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "INT");
-
- if(saved_debug_level != -1) {
- logger(LOG_NOTICE, _("Reverting to old debug level (%d)"),
- saved_debug_level);
- debug_level = saved_debug_level;
- saved_debug_level = -1;
- } else {
- logger(LOG_NOTICE,
- _("Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d."),
- debug_level);
- saved_debug_level = debug_level;
- debug_level = 5;
- }
-}
-
-static RETSIGTYPE sigalrm_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "ALRM");
- sigalrm = true;
-}
-
-static RETSIGTYPE sigusr1_handler(int a)
-{
- dump_connections();
-}
-
-static RETSIGTYPE sigusr2_handler(int a)
-{
- dump_device_stats();
- dump_nodes();
- dump_edges();
- dump_subnets();
-}
-
-static RETSIGTYPE sigwinch_handler(int a)
-{
- do_purge = true;
-}
-
-static RETSIGTYPE unexpected_signal_handler(int a)
-{
+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)
-{
+static RETSIGTYPE ignore_signal_handler(int a) {
ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Ignored signal %d (%s)"), a, strsignal(a));
}
int signal;
void (*handler)(int);
} sighandlers[] = {
- {SIGHUP, sighup_handler},
- {SIGTERM, sigterm_handler},
- {SIGQUIT, sigquit_handler},
{SIGSEGV, fatal_signal_handler},
{SIGBUS, fatal_signal_handler},
{SIGILL, fatal_signal_handler},
{SIGPIPE, ignore_signal_handler},
- {SIGINT, sigint_handler},
- {SIGUSR1, sigusr1_handler},
- {SIGUSR2, sigusr2_handler},
{SIGCHLD, ignore_signal_handler},
- {SIGALRM, sigalrm_handler},
- {SIGWINCH, sigwinch_handler},
{0, NULL}
};
#endif
-void setup_signals(void)
-{
+void setup_signals(void) {
#ifndef HAVE_MINGW
int i;
struct sigaction act;
/* Set a default signal handler for every signal, errors will be
ignored. */
- for(i = 0; i < NSIG; i++) {
+ for(i = 1; i < NSIG; i++) {
if(!do_detach)
act.sa_handler = SIG_DFL;
else
/* If we didn't detach, allow coredumps */
if(!do_detach)
- sighandlers[3].handler = SIG_DFL;
+ 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. */
projects / meshlink / blobdiff