X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fprocess.c;h=a5abc9364a559b5fee5bb19ed1c264765967da86;hp=4626d745ec4b70312761dae2705337ad40b85820;hb=5900c07fab39d2833ea66429ad652ca49a91a508;hpb=e310cc82d3f9c9bdb3b827daa149861a41e2e00a diff --git a/src/process.c b/src/process.c index 4626d745..a5abc936 100644 --- a/src/process.c +++ b/src/process.c @@ -1,7 +1,7 @@ /* process.c -- process management functions - Copyright (C) 1999-2002 Ivo Timmermans , - 2000-2002 Guus Sliepen + Copyright (C) 1999-2003 Ivo Timmermans , + 2000-2003 Guus Sliepen 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 @@ -17,99 +17,231 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: process.c,v 1.1.2.50 2002/09/30 19:04:37 zarq Exp $ + $Id: process.c,v 1.1.2.76 2003/10/06 16:13:08 guus Exp $ */ -#include "config.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include +#include "system.h" #include "conf.h" -#include "process.h" -#include "subnet.h" -#include "device.h" #include "connection.h" #include "device.h" - -#include "system.h" +#include "edge.h" +#include "logger.h" +#include "node.h" +#include "pidfile.h" +#include "process.h" +#include "subnet.h" +#include "utils.h" +#include "xalloc.h" /* If zero, don't detach from the terminal. */ -int do_detach = 1; +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_lvl = -1; - -extern int sighup; -extern int sigalrm; -extern int do_purge; +static int saved_debug_level = -1; -void memory_full(int size) +static void memory_full(int size) { - syslog(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exitting."), 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 -int fcloseall(void) -{ - fflush(stdin); - fflush(stdout); - fflush(stderr); - fclose(stdin); - fclose(stdout); - fclose(stderr); - return 0; +#ifdef HAVE_MINGW +extern char *identname; +extern char *program_name; +extern char **g_argv; + +static SC_HANDLE manager = NULL; +static SC_HANDLE service = NULL; +static SERVICE_STATUS status = {0}; +static SERVICE_STATUS_HANDLE statushandle = 0; + +bool install_service(void) { + char command[4096] = "\""; + char **argp; + bool space; + SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"}; + + manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); + if(!manager) { + logger(LOG_ERR, _("Could not open service manager: %s"), winerror(GetLastError())); + return false; + } + + if(!strchr(program_name, '\\')) { + GetCurrentDirectory(sizeof(command) - 1, command + 1); + strncat(command, "\\", sizeof(command)); + } + + strncat(command, program_name, sizeof(command)); + + strncat(command, "\"", sizeof(command)); + + for(argp = g_argv + 1; *argp; argp++) { + space = strchr(*argp, ' '); + strncat(command, " ", sizeof(command)); + + if(space) + strncat(command, "\"", sizeof(command)); + + strncat(command, *argp, sizeof(command)); + + if(space) + strncat(command, "\"", sizeof(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); + + 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)) + logger(LOG_WARNING, _("Could not start %s service: %s"), identname, winerror(GetLastError())); + else + logger(LOG_INFO, _("%s service started"), identname); + + return true; } -#endif -/* - Close network connections, and terminate neatly -*/ -void cleanup_and_exit(int c) +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; + } + + service = OpenService(manager, identname, SERVICE_ALL_ACCESS); + + if(!service) { + 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())); + 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; + } + + logger(LOG_INFO, _("%s service removed"), identname); + + return true; +} + +DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) { + switch(request) { + 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; + } + + if(running) { + running = false; + status.dwWaitHint = 30000; + status.dwCurrentState = SERVICE_STOP_PENDING; + SetServiceStatus(statushandle, &status); + return NO_ERROR; + } else { + status.dwWaitHint = 0; + status.dwCurrentState = SERVICE_STOPPED; + SetServiceStatus(statushandle, &status); + exit(1); + } + +} + +VOID WINAPI run_service(DWORD argc, LPTSTR* argv) { - cp(); + int err = 1; + extern int main2(int argc, char **argv); - close_network_connections(); - if(debug_lvl > DEBUG_NOTHING) - dump_device_stats(); + 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); - syslog(LOG_NOTICE, _("Terminating")); + status.dwWaitHint = 0; + status.dwCurrentState = SERVICE_RUNNING; + SetServiceStatus(statushandle, &status); - closelog(); - exit(c); + 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())); + } + + return true; } +#endif +#ifndef HAVE_MINGW /* check for an existing tinc for this net, and write pid to pidfile */ -int write_pidfile(void) +static bool write_pidfile(void) { - int pid; + pid_t pid; cp(); @@ -117,26 +249,28 @@ int write_pidfile(void) if(pid) { if(netname) - fprintf(stderr, _("A tincd is already running for net `%s' with pid %d.\n"), - netname, pid); + fprintf(stderr, _("A tincd is already running for net `%s' with pid %ld.\n"), + netname, (long)pid); else - fprintf(stderr, _("A tincd is already running with pid %d.\n"), pid); - return 1; + fprintf(stderr, _("A tincd is already running with pid %ld.\n"), (long)pid); + return false; } /* if it's locked, write-protected, or whatever */ if(!write_pid(pidfilename)) - return 1; + return false; - return 0; + return true; } +#endif /* kill older tincd for this net */ -int kill_other(int signal) +bool kill_other(int signal) { - int pid; +#ifndef HAVE_MINGW + pid_t pid; cp(); @@ -148,7 +282,7 @@ int kill_other(int signal) netname); else fprintf(stderr, _("No other tincd is running.\n")); - return 1; + return false; } errno = 0; /* No error, sometimes errno is only changed on error */ @@ -165,13 +299,16 @@ int kill_other(int signal) remove_pid(pidfilename); } - return 0; + return true; +#else + return remove_service(); +#endif } /* Detach from current terminal, write pidfile, kill parent */ -int detach(void) +bool detach(void) { cp(); @@ -179,128 +316,106 @@ int detach(void) /* First check if we can open a fresh new pidfile */ - if(write_pidfile()) - return -1; +#ifndef HAVE_MINGW + if(!write_pidfile()) + return false; /* If we succeeded in doing that, detach */ - closelog(); + closelogger(); +#endif if(do_detach) { - if(daemon(0, 0) < 0) { +#ifndef HAVE_MINGW + if(daemon(0, 0)) { fprintf(stderr, _("Couldn't detach from terminal: %s"), strerror(errno)); - return -1; + return false; } /* Now UPDATE the pid in the pidfile, because we changed it... */ if(!write_pid(pidfilename)) - return -1; + return false; +#else + if(!statushandle) + exit(install_service()); +#endif } - openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON); + openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR)); - 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); + logger(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"), + VERSION, __DATE__, __TIME__, debug_level); xalloc_fail_func = memory_full; - return 0; -} - -/* - Execute the program name, with sane environment. All output will be - redirected to syslog. -*/ -void _execute_script(const char *scriptname, char **envp) - __attribute__ ((noreturn)); -void _execute_script(const char *scriptname, char **envp) -{ - cp(); - - while(*envp) - putenv(*envp++); - - chdir("/"); - - /* Close all file descriptors */ - closelog(); /* <- this means we cannot use syslog() here anymore! */ - fcloseall(); - - execl(scriptname, NULL); - /* No return on success */ - - openlog("tinc", LOG_CONS | LOG_PID, LOG_DAEMON); - syslog(LOG_ERR, _("Could not execute `%s': %s"), scriptname, - strerror(errno)); - exit(errno); + return true; } -/* - Fork and execute the program pointed to by name. -*/ -int execute_script(const char *name, char **envp) +bool execute_script(const char *name, char **envp) { - pid_t pid; - int status; +#ifdef HAVE_SYSTEM + int status, len; struct stat s; char *scriptname; cp(); - asprintf(&scriptname, "%s/%s", confbase, name); +#ifndef HAVE_MINGW + len = asprintf(&scriptname, "\"%s/%s\"", confbase, name); +#else + len = asprintf(&scriptname, "\"%s/%s.bat\"", confbase, name); +#endif + if(len < 0) + return false; + + scriptname[len - 1] = '\0'; /* First check if there is a script */ - if(stat(scriptname, &s)) - return 0; + if(stat(scriptname + 1, &s)) + return true; - pid = fork(); + ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name); - if(pid < 0) { - syslog(LOG_ERR, _("System call `%s' failed: %s"), "fork", - strerror(errno)); - return -1; - } +#ifdef HAVE_PUTENV + /* Set environment */ + + while(*envp) + putenv(*envp++); +#endif - if(pid) { - if(debug_lvl >= DEBUG_STATUS) - syslog(LOG_INFO, _("Executing script %s"), name); - - free(scriptname); - - 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; + scriptname[len - 1] = '\"'; + status = system(scriptname); + + free(scriptname); + + /* Unset environment? */ + +#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 { - syslog(LOG_ERR, _("System call `%s' failed: %s"), "waitpid", - strerror(errno)); - return -1; + } 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; } + } else { + logger(LOG_ERR, _("System call `%s' failed: %s"), "system", strerror(errno)); + return false; } - - /* Child here */ - - _execute_script(scriptname, envp); +#endif +#endif + return true; } @@ -308,37 +423,35 @@ int execute_script(const char *name, char **envp) Signal handlers. */ -RETSIGTYPE sigterm_handler(int a) +#ifndef HAVE_MINGW +static RETSIGTYPE sigterm_handler(int a) { - if(debug_lvl > DEBUG_NOTHING) - syslog(LOG_NOTICE, _("Got TERM signal")); - - cleanup_and_exit(0); + logger(LOG_NOTICE, _("Got %s signal"), "TERM"); + running = false; } -RETSIGTYPE sigquit_handler(int a) +static RETSIGTYPE sigquit_handler(int a) { - if(debug_lvl > DEBUG_NOTHING) - syslog(LOG_NOTICE, _("Got QUIT signal")); - cleanup_and_exit(0); + logger(LOG_NOTICE, _("Got %s signal"), "QUIT"); + running = false; } -RETSIGTYPE fatal_signal_square(int a) +static RETSIGTYPE fatal_signal_square(int a) { - syslog(LOG_ERR, _("Got another fatal signal %d (%s): not restarting."), a, + logger(LOG_ERR, _("Got another fatal signal %d (%s): not restarting."), a, strsignal(a)); cp_trace(); exit(1); } -RETSIGTYPE fatal_signal_handler(int a) +static RETSIGTYPE fatal_signal_handler(int a) { struct sigaction act; - syslog(LOG_ERR, _("Got fatal signal %d (%s)"), a, strsignal(a)); + logger(LOG_ERR, _("Got fatal signal %d (%s)"), a, strsignal(a)); cp_trace(); if(do_detach) { - syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds...")); + logger(LOG_NOTICE, _("Trying to re-execute in 5 seconds...")); act.sa_handler = fatal_signal_square; act.sa_mask = emptysigset; @@ -350,46 +463,47 @@ RETSIGTYPE fatal_signal_handler(int a) remove_pid(pidfilename); execvp(g_argv[0], g_argv); } else { - syslog(LOG_NOTICE, _("Not restarting.")); + logger(LOG_NOTICE, _("Not restarting.")); exit(1); } } -RETSIGTYPE sighup_handler(int a) +static RETSIGTYPE sighup_handler(int a) { - if(debug_lvl > DEBUG_NOTHING) - syslog(LOG_NOTICE, _("Got HUP signal")); - sighup = 1; + logger(LOG_NOTICE, _("Got %s signal"), "HUP"); + sighup = true; } -RETSIGTYPE sigint_handler(int a) +static RETSIGTYPE sigint_handler(int a) { - if(saved_debug_lvl != -1) { - syslog(LOG_NOTICE, _("Reverting to old debug level (%d)"), - saved_debug_lvl); - debug_lvl = saved_debug_lvl; - saved_debug_lvl = -1; + 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 { - syslog(LOG_NOTICE, _("Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d."), - debug_lvl); - saved_debug_lvl = debug_lvl; - debug_lvl = 5; + 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; } } -RETSIGTYPE sigalrm_handler(int a) +static RETSIGTYPE sigalrm_handler(int a) { - if(debug_lvl > DEBUG_NOTHING) - syslog(LOG_NOTICE, _("Got ALRM signal")); - sigalrm = 1; + logger(LOG_NOTICE, _("Got %s signal"), "ALRM"); + sigalrm = true; } -RETSIGTYPE sigusr1_handler(int a) +static RETSIGTYPE sigusr1_handler(int a) { dump_connections(); } -RETSIGTYPE sigusr2_handler(int a) +static RETSIGTYPE sigusr2_handler(int a) { dump_device_stats(); dump_nodes(); @@ -397,49 +511,46 @@ RETSIGTYPE sigusr2_handler(int a) dump_subnets(); } -RETSIGTYPE sigwinch_handler(int a) +static RETSIGTYPE sigwinch_handler(int a) { - extern int do_purge; - do_purge = 1; + do_purge = true; } -RETSIGTYPE unexpected_signal_handler(int a) +static RETSIGTYPE unexpected_signal_handler(int a) { - syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a)); + logger(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a)); cp_trace(); } -RETSIGTYPE ignore_signal_handler(int a) +static RETSIGTYPE ignore_signal_handler(int a) { - if(debug_lvl >= DEBUG_SCARY_THINGS) { - syslog(LOG_DEBUG, _("Ignored signal %d (%s)"), a, strsignal(a)); - cp_trace(); - } + ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Ignored signal %d (%s)"), a, strsignal(a)); } -struct { +static struct { 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} + {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) { +#ifndef HAVE_MINGW int i; struct sigaction act; @@ -471,4 +582,5 @@ void setup_signals(void) sighandlers[i].signal, strsignal(sighandlers[i].signal), strerror(errno)); } +#endif }