/*
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 1.1.2.59 2003/07/30 21:52:41 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;
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;
+extern char **g_argv;
-/*
- Close network connections, and terminate neatly
-*/
-void cleanup_and_exit(int c)
-{
- cp();
+static SC_HANDLE manager = NULL;
+static SC_HANDLE service = NULL;
+static SERVICE_STATUS status = {0};
+static SERVICE_STATUS_HANDLE statushandle = 0;
- close_network_connections();
+bool install_service(void) {
+ char command[4096] = "\"";
+ char **argp;
+ bool space;
+ SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
- ifdebug(CONNECTIONS)
- dump_device_stats();
+ manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
+ if(!manager) {
+ logger(LOG_ERR, _("Could not open service manager: %s"), winerror(GetLastError()));
+ return false;
+ }
- logger(LOG_NOTICE, _("Terminating"));
+ if(!strchr(program_name, '\\')) {
+ GetCurrentDirectory(sizeof command - 1, command + 1);
+ strncat(command, "\\", sizeof command - strlen(command));
+ }
- closelogger();
- exit(c);
-}
+ strncat(command, program_name, sizeof command - strlen(command));
-#ifndef HAVE_MINGW
-/*
- check for an existing tinc for this net, and write pid to pidfile
-*/
-static bool write_pidfile(void)
-{
- int pid;
+ strncat(command, "\"", sizeof command - strlen(command));
- cp();
+ for(argp = g_argv + 1; *argp; argp++) {
+ space = strchr(*argp, ' ');
+ strncat(command, " ", sizeof command - strlen(command));
+
+ if(space)
+ strncat(command, "\"", sizeof command - strlen(command));
+
+ strncat(command, *argp, sizeof command - strlen(command));
- pid = check_pid(pidfilename);
+ if(space)
+ strncat(command, "\"", sizeof command - strlen(command));
+ }
- 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);
+ service = CreateService(manager, identname, identname,
+ SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
+ command, NULL, NULL, NULL, NULL, NULL);
+
+ if(!service) {
+ logger(LOG_ERR, _("Could not create %s service: %s"), identname, winerror(GetLastError()));
return false;
}
- /* if it's locked, write-protected, or whatever */
- if(!write_pid(pidfilename))
- return false;
+ ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
+
+ logger(LOG_INFO, _("%s service installed"), identname);
+
+ if(!StartService(service, 0, NULL))
+ logger(LOG_WARNING, _("Could not start %s service: %s"), identname, winerror(GetLastError()));
+ else
+ logger(LOG_INFO, _("%s service started"), identname);
return true;
}
-#endif
-/*
- kill older tincd for this net
-*/
-bool kill_other(int signal)
-{
-#ifndef HAVE_MINGW
- int pid;
+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()));
+ return false;
+ }
- cp();
+ service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
- pid = read_pid(pidfilename);
+ if(!service) {
+ logger(LOG_ERR, _("Could not open %s service: %s"), identname, winerror(GetLastError()));
+ return false;
+ }
- 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"));
+ if(!ControlService(service, SERVICE_CONTROL_STOP, &status))
+ logger(LOG_ERR, _("Could not stop %s service: %s"), identname, winerror(GetLastError()));
+ else
+ logger(LOG_INFO, _("%s service stopped"), identname);
+
+ if(!DeleteService(service)) {
+ logger(LOG_ERR, _("Could not remove %s service: %s"), identname, winerror(GetLastError()));
return false;
}
- errno = 0; /* No error, sometimes errno is only changed on error */
+ logger(LOG_INFO, _("%s service removed"), identname);
- /* 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. "));
+ return true;
+}
- fprintf(stderr, _("Removing stale lock file.\n"));
- remove_pid(pidfilename);
+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");
+ break;
+ case SERVICE_CONTROL_SHUTDOWN:
+ logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_SHUTDOWN");
+ break;
+ default:
+ logger(LOG_WARNING, _("Got unexpected request %d"), request);
+ return ERROR_CALL_NOT_IMPLEMENTED;
+ }
+
+ 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) {
+ int err = 1;
+ extern int main2(int argc, char **argv);
+
+
+ status.dwServiceType = SERVICE_WIN32;
+ status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
+ status.dwWin32ExitCode = 0;
+ status.dwServiceSpecificExitCode = 0;
+ status.dwCheckPoint = 0;
+
+ statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
+
+ if (!statushandle) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
+ err = 1;
+ } else {
+ status.dwWaitHint = 30000;
+ status.dwCurrentState = SERVICE_START_PENDING;
+ SetServiceStatus(statushandle, &status);
+
+ status.dwWaitHint = 0;
+ status.dwCurrentState = SERVICE_RUNNING;
+ SetServiceStatus(statushandle, &status);
+
+ err = main2(argc, argv);
+
+ status.dwWaitHint = 0;
+ status.dwCurrentState = SERVICE_STOPPED;
+ //status.dwWin32ExitCode = err;
+ SetServiceStatus(statushandle, &status);
+ }
+
+ return;
+}
+
+bool init_service(void) {
+ SERVICE_TABLE_ENTRY services[] = {
+ {identname, run_service},
+ {NULL, NULL}
+ };
+
+ if(!StartServiceCtrlDispatcher(services)) {
+ if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
+ return false;
+ }
+ else
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "StartServiceCtrlDispatcher", winerror(GetLastError()));
}
-#endif
return true;
}
+#endif
/*
- Detach from current terminal, write pidfile, kill parent
+ Detach from current terminal
*/
-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;
-#endif
-
- /* If we succeeded in doing that, detach */
-
closelogger();
+#endif
-#ifdef HAVE_FORK
if(do_detach) {
+#ifndef HAVE_MINGW
if(daemon(0, 0)) {
fprintf(stderr, _("Couldn't detach from terminal: %s"),
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());
#endif
+ }
openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
return true;
}
-#ifdef HAVE_FORK
-/*
- Execute the program name, with sane environment.
-*/
-static void _execute_script(const char *scriptname, char **envp)
- __attribute__ ((__noreturn__));
-static void _execute_script(const char *scriptname, char **envp)
-{
- int save_errno;
+bool execute_script(const char *name, char **envp) {
+#ifdef HAVE_SYSTEM
+ int status, len;
+ char *scriptname, *p;
+ int i;
cp();
- while(*envp)
- putenv(*envp++);
-
- chdir("/");
-
- closelogger();
-
- /* Close all file descriptors */
- fcloseall();
+#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;
- execl(scriptname, NULL);
- /* No return on success */
+ scriptname[len - 1] = '\0';
- save_errno = errno;
+#ifndef HAVE_TUNEMU
+ /* First check if there is a script */
- openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
- logger(LOG_ERR, _("Could not execute `%s': %s"), scriptname,
- strerror(save_errno));
- exit(save_errno);
-}
+ if(access(scriptname + 1, F_OK)) {
+ free(scriptname);
+ return true;
+ }
#endif
-/*
- Fork and execute the program pointed to by name.
-*/
-bool execute_script(const char *name, char **envp)
-{
-#ifdef HAVE_FORK
- pid_t pid;
- int status;
- struct stat s;
- char *scriptname;
-
- cp();
+ ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name);
- asprintf(&scriptname, "%s/%s", confbase, name);
+#ifdef HAVE_PUTENV
+ /* Set environment */
+
+ for(i = 0; envp[i]; i++)
+ putenv(envp[i]);
+#endif
- /* First check if there is a script */
+ scriptname[len - 1] = '\"';
+ status = system(scriptname);
- if(stat(scriptname, &s))
- return true;
+ free(scriptname);
- pid = fork();
+ /* Unset environment */
- if(pid < 0) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "fork",
- strerror(errno));
- return false;
+ 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);
+ }
}
- if(pid) {
- ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name);
-
- free(scriptname);
-
- if(waitpid(pid, &status, 0) == pid) {
- 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));
- return false;
- } else
- return true;
- } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
- logger(LOG_ERR, _("Process %d (%s) was killed by signal %d (%s)"), pid,
- name, WTERMSIG(status), strsignal(WTERMSIG(status)));
- return false;
- } else { /* Something strange happened */
- logger(LOG_ERR, _("Process %d (%s) terminated abnormally"), pid,
- name);
+#ifdef WEXITSTATUS
+ if(status != -1) {
+ if(WIFEXITED(status)) { /* Child exited by itself */
+ if(WEXITSTATUS(status)) {
+ logger(LOG_ERR, _("Script %s exited with non-zero status %d"),
+ name, WEXITSTATUS(status));
return false;
}
- } else if (errno != EINTR) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "waitpid",
- strerror(errno));
+ } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
+ 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);
return false;
}
-
- /* Why do we get EINTR? */
- return true;
+ } else {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "system", strerror(errno));
+ return false;
}
-
- /* Child here */
-
- _execute_script(scriptname, envp);
-#else
- return true;
#endif
+#endif
+ return true;
}
*/
#ifndef HAVE_MINGW
-static RETSIGTYPE sigterm_handler(int a)
-{
- logger(LOG_NOTICE, _("Got TERM signal"));
-
- cleanup_and_exit(0);
-}
-
-static RETSIGTYPE sigquit_handler(int a)
-{
- logger(LOG_NOTICE, _("Got QUIT signal"));
- cleanup_and_exit(0);
-}
-
-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 HUP signal"));
- sighup = true;
-}
-
-static RETSIGTYPE sigint_handler(int a)
-{
- 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 ALRM signal"));
- 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