/*
process.c -- process management functions
- Copyright (C) 1999-2001 Ivo Timmermans <itimmermans@bigfoot.com>,
- 2000,2001 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 1999-2005 Ivo Timmermans,
+ 2000-2013 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: process.c,v 1.1.2.21 2001/03/01 21:32:04 guus Exp $
+ 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 "config.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <stdio.h>
-#include <string.h>
-#include <syslog.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <termios.h>
-
-#include <pidfile.h>
-#include <utils.h>
-#include <xalloc.h>
+#include "system.h"
#include "conf.h"
+#include "connection.h"
+#include "control.h"
+#include "device.h"
+#include "edge.h"
+#include "event.h"
+#include "logger.h"
+#include "names.h"
+#include "net.h"
+#include "node.h"
#include "process.h"
#include "subnet.h"
-#include "connection.h"
-
-#include "system.h"
+#include "utils.h"
+#include "xalloc.h"
+#include "version.h"
/* If zero, don't detach from the terminal. */
-int do_detach = 1;
+bool do_detach = true;
+bool sigalrm = false;
-extern char *identname;
-extern char *pidfilename;
extern char **g_argv;
+extern bool use_logfile;
+extern bool use_syslog;
-sigset_t emptysigset;
+/* Some functions the less gifted operating systems might lack... */
-void memory_full(int size)
-{
- syslog(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exiting."), size);
- cp_trace();
- exit(1);
-}
+#ifdef HAVE_MINGW
+static SC_HANDLE manager = NULL;
+static SC_HANDLE service = NULL;
+static SERVICE_STATUS status = {0};
+static SERVICE_STATUS_HANDLE statushandle = 0;
-/* Some functions the less gifted operating systems might lack... */
+static bool install_service(void) {
+ char command[4096] = "\"";
+ SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
-#ifndef HAVE_FCLOSEALL
-int fcloseall(void)
-{
- fflush(stdin);
- fflush(stdout);
- fflush(stderr);
- fclose(stdin);
- fclose(stdout);
- fclose(stderr);
-}
-#endif
+ manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
+ if(!manager) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not open service manager: %s", winerror(GetLastError()));
+ return false;
+ }
-/*
- Close network connections, and terminate neatly
-*/
-void cleanup_and_exit(int c)
-{
-cp
- close_network_connections();
+ if(!strchr(program_name, '\\')) {
+ GetCurrentDirectory(sizeof command - 1, command + 1);
+ strncat(command, "\\", sizeof command - strlen(command));
+ }
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_INFO, _("Total bytes written: tap %d, socket %d; bytes read: tap %d, socket %d"),
- total_tap_out, total_socket_out, total_tap_in, total_socket_in);
+ strncat(command, program_name, sizeof command - strlen(command));
- syslog(LOG_NOTICE, _("Terminating"));
+ strncat(command, "\"", sizeof command - strlen(command));
- closelog();
- exit(c);
-}
+ for(char **argp = g_argv + 1; *argp; argp++) {
+ char *space = strchr(*argp, ' ');
+ strncat(command, " ", sizeof command - strlen(command));
-/*
- check for an existing tinc for this net, and write pid to pidfile
-*/
-int write_pidfile(void)
-{
- int pid;
-cp
- if((pid = check_pid(pidfilename)))
- {
- 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 1;
- }
-
- /* if it's locked, write-protected, or whatever */
- if(!write_pid(pidfilename))
- return 1;
-cp
- return 0;
-}
+ if(space)
+ strncat(command, "\"", sizeof command - strlen(command));
-/*
- kill older tincd for this net
-*/
-int kill_other(void)
-{
- int pid;
-cp
- if(!(pid = read_pid(pidfilename)))
- {
- if(netname)
- fprintf(stderr, _("No other tincd is running for net `%s'.\n"), netname);
- else
- fprintf(stderr, _("No other tincd is running.\n"));
- return 1;
- }
-
- 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, SIGTERM) && errno == ESRCH)
- fprintf(stderr, _("Removing stale lock file.\n"));
- remove_pid(pidfilename);
-cp
- return 0;
-}
+ strncat(command, *argp, sizeof command - strlen(command));
-/*
- Detach from current terminal, write pidfile, kill parent
-*/
-int detach(void)
-{
-cp
- setup_signals();
-
- /* First check if we can open a fresh new pidfile */
-
- if(write_pidfile())
- return -1;
-
- /* If we succeeded in doing that, detach */
-
- closelog();
-
- if(do_detach)
- {
- if(daemon(0, 0) < 0)
- {
- fprintf(stderr, _("Couldn't detach from terminal: %m"));
- return -1;
+ if(space)
+ strncat(command, "\"", sizeof command - strlen(command));
}
- /* Now UPDATE the pid in the pidfile, because we changed it... */
-
- if(!write_pid(pidfilename))
- return -1;
- }
-
- openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
-
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
- VERSION, __DATE__, __TIME__, debug_lvl);
- else
- syslog(LOG_NOTICE, _("tincd %s starting"), VERSION);
-
- xalloc_fail_func = memory_full;
-cp
- return 0;
-}
+ service = CreateService(manager, identname, identname,
+ SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
+ command, NULL, NULL, NULL, NULL, NULL);
-/*
- Execute the program name, with sane environment. All output will be
- redirected to syslog.
-*/
-void _execute_script(const char *name) __attribute__ ((noreturn));
-void _execute_script(const char *name)
-{
- char *scriptname;
- char *s;
-cp
- if(netname)
- {
- asprintf(&s, "NETNAME=%s", netname);
- putenv(s); /* Don't free s! see man 3 putenv */
- }
-#ifdef HAVE_UNSETENV
- else
- {
- unsetenv("NETNAME");
- }
-#endif
+ if(!service) {
+ DWORD lasterror = GetLastError();
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror));
+ if(lasterror != ERROR_SERVICE_EXISTS)
+ return false;
+ }
- chdir("/");
-
- asprintf(&scriptname, "%s/%s", confbase, name);
-
- /* Close all file descriptors */
- closelog(); /* <- this means we cannot use syslog() here anymore! */
- fcloseall();
-
- execl(scriptname, NULL);
- /* No return on success */
-
- if(errno != ENOENT) /* Ignore if the file does not exist */
- exit(1); /* Some error while trying execl(). */
- else
- exit(0);
-}
+ if(service) {
+ ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
+ logger(DEBUG_ALWAYS, LOG_INFO, "%s service installed", identname);
+ } else {
+ service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
+ }
-/*
- Fork and execute the program pointed to by name.
-*/
-int execute_script(const char *name)
-{
- pid_t pid;
- int status;
-cp
- if((pid = fork()) < 0)
- {
- syslog(LOG_ERR, _("System call `%s' failed: %m"),
- "fork");
- return -1;
- }
-
- if(pid)
- {
- if(debug_lvl >= DEBUG_STATUS)
- syslog(LOG_INFO, _("Executing script %s"), name);
-
- if(waitpid(pid, &status, 0) == pid)
- {
- if(WIFEXITED(status)) /* Child exited by itself */
- {
- if(WEXITSTATUS(status))
- {
- syslog(LOG_ERR, _("Process %d (%s) exited with non-zero status %d"), pid, name, WEXITSTATUS(status));
- return -1;
- }
- else
- return 0;
- }
- else if(WIFSIGNALED(status)) /* Child was killed by a signal */
- {
- syslog(LOG_ERR, _("Process %d (%s) was killed by signal %d (%s)"),
- pid, name, WTERMSIG(status), strsignal(WTERMSIG(status)));
- return -1;
- }
- else /* Something strange happened */
- {
- syslog(LOG_ERR, _("Process %d (%s) terminated abnormally"), pid, name);
- return -1;
- }
- }
- else
- {
- syslog(LOG_ERR, _("System call `%s' failed: %m"), "waitpid");
- return -1;
- }
- }
-cp
- /* Child here */
-
- _execute_script(name);
+ if(!StartService(service, 0, NULL))
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Could not start %s service: %s", identname, winerror(GetLastError()));
+ else
+ logger(DEBUG_ALWAYS, LOG_INFO, "%s service started", identname);
+
+ return true;
+}
+
+io_t stop_io;
+
+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(DEBUG_ALWAYS, LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_STOP");
+ break;
+ case SERVICE_CONTROL_SHUTDOWN:
+ logger(DEBUG_ALWAYS, LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN");
+ break;
+ default:
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Got unexpected request %d", (int)request);
+ return ERROR_CALL_NOT_IMPLEMENTED;
+ }
+
+ status.dwWaitHint = 1000;
+ status.dwCurrentState = SERVICE_STOP_PENDING;
+ SetServiceStatus(statushandle, &status);
+ if (WSASetEvent(stop_io.event) == FALSE)
+ abort();
+ return NO_ERROR;
}
+VOID WINAPI run_service(DWORD argc, LPTSTR* argv) {
+ extern int main2(int argc, char **argv);
-/*
- Signal handlers.
-*/
+ status.dwServiceType = SERVICE_WIN32;
+ status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
+ status.dwWin32ExitCode = 0;
+ status.dwServiceSpecificExitCode = 0;
+ status.dwCheckPoint = 0;
-RETSIGTYPE
-sigterm_handler(int a, siginfo_t *info, void *b)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got TERM signal"));
+ statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
- cleanup_and_exit(0);
-}
+ if (!statushandle) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
+ } else {
+ status.dwWaitHint = 30000;
+ status.dwCurrentState = SERVICE_START_PENDING;
+ SetServiceStatus(statushandle, &status);
-RETSIGTYPE
-sigquit_handler(int a, siginfo_t *info, void *b)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got QUIT signal"));
- cleanup_and_exit(0);
-}
+ status.dwWaitHint = 0;
+ status.dwCurrentState = SERVICE_RUNNING;
+ SetServiceStatus(statushandle, &status);
-RETSIGTYPE
-sigsegv_square(int a, siginfo_t *info, void *b)
-{
- syslog(LOG_ERR, _("Got another SEGV signal: not restarting"));
- cp_trace();
- exit(1);
-}
+ main2(argc, argv);
-RETSIGTYPE
-sigsegv_handler(int a, siginfo_t *info, void *b)
-{
- struct sigaction act;
- syslog(LOG_ERR, _("Got SEGV signal"));
- cp_trace();
-
- if(do_detach)
- {
- syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
-
- act.sa_handler = NULL;
- act.sa_mask = emptysigset;
- act.sa_flags = SA_SIGINFO;
- act.sa_sigaction = sigsegv_square;
-
- close_network_connections();
- sleep(5);
- remove_pid(pidfilename);
- execvp(g_argv[0], g_argv);
- }
- else
- {
- syslog(LOG_NOTICE, _("Not restarting."));
- exit(0);
- }
-}
+ status.dwWaitHint = 0;
+ status.dwCurrentState = SERVICE_STOPPED;
+ SetServiceStatus(statushandle, &status);
+ }
-RETSIGTYPE
-sighup_handler(int a, siginfo_t *info, void *b)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got HUP signal"));
- sighup = 1;
+ return;
}
-RETSIGTYPE
-sigint_handler(int a, siginfo_t *info, void *b)
-{
- if(debug_lvl > DEBUG_NOTHING)
- syslog(LOG_NOTICE, _("Got INT signal, exiting"));
- cleanup_and_exit(0);
-}
+bool init_service(void) {
+ SERVICE_TABLE_ENTRY services[] = {
+ {identname, run_service},
+ {NULL, NULL}
+ };
-RETSIGTYPE
-sigusr1_handler(int a, siginfo_t *info, void *b)
-{
- dump_connection_list();
-}
+ if(!StartServiceCtrlDispatcher(services)) {
+ if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
+ return false;
+ }
+ else
+ logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError()));
+ }
-RETSIGTYPE
-sigusr2_handler(int a, siginfo_t *info, void *b)
-{
- dump_subnet_list();
+ return true;
}
+#endif
-RETSIGTYPE
-unexpected_signal_handler(int a, siginfo_t *info, void *b)
-{
- syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
- cp_trace();
-}
+/*
+ Detach from current terminal
+*/
+bool detach(void) {
+ logmode_t logmode;
+
+#ifndef HAVE_MINGW
+ 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(1, 0)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Couldn't detach from terminal: %s", strerror(errno));
+ return false;
+ }
+#else
+ if(!statushandle)
+ exit(!install_service());
+#endif
+ }
+
+ if(use_logfile)
+ logmode = LOGMODE_FILE;
+ else if(use_syslog || do_detach)
+ logmode = LOGMODE_SYSLOG;
+ else
+ logmode = LOGMODE_STDERR;
+
+ openlogger(identname, logmode);
+
+ logger(DEBUG_ALWAYS, LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
+ BUILD_VERSION, BUILD_DATE, BUILD_TIME, debug_level);
-struct {
- int signal;
- void (*handler)(int, siginfo_t *, void *);
-} sighandlers[] = {
- { SIGHUP, sighup_handler },
- { SIGTERM, sigterm_handler },
- { SIGQUIT, sigquit_handler },
- { SIGSEGV, sigsegv_handler },
- { SIGPIPE, NULL },
- { SIGINT, sigint_handler },
- { SIGUSR1, sigusr1_handler },
- { SIGUSR2, sigusr2_handler },
- { SIGCHLD, NULL },
- { 0, NULL }
-};
-
-void
-setup_signals(void)
-{
- int i;
- struct sigaction act;
-
- sigemptyset(&emptysigset);
- act.sa_handler = NULL;
- act.sa_mask = emptysigset;
- act.sa_flags = SA_SIGINFO;
-
- /* Set a default signal handler for every signal, errors will be
- ignored. */
- for(i = 0; i < NSIG; i++)
- {
- act.sa_sigaction = unexpected_signal_handler;
- sigaction(sighandlers[i].signal, &act, NULL);
- }
-
- /* 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_sigaction = sighandlers[i].handler;
- if(sigaction(sighandlers[i].signal, &act, NULL) < 0)
- fprintf(stderr, _("Installing signal handler for signal %d (%s) failed: %m\n"),
- sighandlers[i].signal, strsignal(sighandlers[i].signal));
- }
+ return true;
}
projects / tinc / blobdiff