2000-11-16 17:54:29 +00:00
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/*
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process.c -- process management functions
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2006-04-26 13:52:58 +00:00
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Copyright (C) 1999-2005 Ivo Timmermans,
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2011-05-08 19:22:20 +00:00
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2000-2011 Guus Sliepen <guus@tinc-vpn.org>
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2000-11-16 17:54:29 +00:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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2009-09-24 22:01:00 +00:00
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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2000-11-16 17:54:29 +00:00
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*/
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2003-07-17 15:06:27 +00:00
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#include "system.h"
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2000-11-16 22:12:23 +00:00
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#include "conf.h"
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2000-11-22 22:18:03 +00:00
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#include "connection.h"
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2007-05-19 14:13:21 +00:00
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#include "control.h"
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2001-10-31 12:50:24 +00:00
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#include "device.h"
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2003-07-17 15:06:27 +00:00
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#include "edge.h"
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2003-07-06 22:11:37 +00:00
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#include "logger.h"
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2011-05-28 21:36:52 +00:00
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#include "net.h"
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2003-07-17 15:06:27 +00:00
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#include "node.h"
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#include "process.h"
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#include "subnet.h"
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#include "utils.h"
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#include "xalloc.h"
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2000-11-16 17:54:29 +00:00
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/* If zero, don't detach from the terminal. */
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2003-07-22 20:55:21 +00:00
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bool do_detach = true;
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bool sigalrm = false;
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2000-11-16 17:54:29 +00:00
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2000-11-16 22:12:23 +00:00
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extern char *identname;
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extern char **g_argv;
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2003-07-22 20:55:21 +00:00
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extern bool use_logfile;
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2000-11-16 22:12:23 +00:00
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2000-11-22 22:05:37 +00:00
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/* Some functions the less gifted operating systems might lack... */
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2003-08-02 20:50:38 +00:00
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#ifdef HAVE_MINGW
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extern char *identname;
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extern char *program_name;
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extern char **g_argv;
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static SC_HANDLE manager = NULL;
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static SC_HANDLE service = NULL;
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static SERVICE_STATUS status = {0};
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static SERVICE_STATUS_HANDLE statushandle = 0;
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2011-07-17 17:23:52 +00:00
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static bool install_service(void) {
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2003-08-22 15:05:01 +00:00
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char command[4096] = "\"";
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2003-08-10 13:35:05 +00:00
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SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
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2003-08-02 20:50:38 +00:00
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manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
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if(!manager) {
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not open service manager: %s", winerror(GetLastError()));
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2003-08-02 20:50:38 +00:00
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return false;
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}
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if(!strchr(program_name, '\\')) {
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2005-01-04 22:18:58 +00:00
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GetCurrentDirectory(sizeof command - 1, command + 1);
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strncat(command, "\\", sizeof command - strlen(command));
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2003-08-02 20:50:38 +00:00
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}
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2005-01-04 22:18:58 +00:00
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strncat(command, program_name, sizeof command - strlen(command));
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2003-08-16 12:11:11 +00:00
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2005-01-04 22:18:58 +00:00
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strncat(command, "\"", sizeof command - strlen(command));
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2003-08-16 12:11:11 +00:00
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2012-10-07 22:35:38 +00:00
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for(char **argp = g_argv + 1; *argp; argp++) {
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2012-10-14 14:39:16 +00:00
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char *space = strchr(*argp, ' ');
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2005-01-04 22:18:58 +00:00
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strncat(command, " ", sizeof command - strlen(command));
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2012-10-10 15:17:49 +00:00
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2003-08-08 19:56:11 +00:00
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if(space)
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2005-01-04 22:18:58 +00:00
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strncat(command, "\"", sizeof command - strlen(command));
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2012-10-10 15:17:49 +00:00
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2005-01-04 22:18:58 +00:00
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strncat(command, *argp, sizeof command - strlen(command));
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2003-08-08 19:56:11 +00:00
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2003-08-08 17:17:13 +00:00
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if(space)
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2005-01-04 22:18:58 +00:00
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strncat(command, "\"", sizeof command - strlen(command));
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2003-08-02 20:50:38 +00:00
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}
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service = CreateService(manager, identname, identname,
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SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
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2004-11-01 15:18:22 +00:00
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command, NULL, NULL, NULL, NULL, NULL);
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2012-10-10 15:17:49 +00:00
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2003-08-02 20:50:38 +00:00
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if(!service) {
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2009-11-01 14:57:28 +00:00
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DWORD lasterror = GetLastError();
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror));
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2009-11-01 14:57:28 +00:00
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if(lasterror != ERROR_SERVICE_EXISTS)
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return false;
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2003-08-02 20:50:38 +00:00
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}
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2009-11-01 14:57:28 +00:00
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if(service) {
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ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_INFO, "%s service installed", identname);
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2009-11-01 14:57:28 +00:00
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} else {
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service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
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}
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2003-08-02 20:50:38 +00:00
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if(!StartService(service, 0, NULL))
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_WARNING, "Could not start %s service: %s", identname, winerror(GetLastError()));
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2003-08-02 20:50:38 +00:00
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else
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_INFO, "%s service started", identname);
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2003-08-02 20:50:38 +00:00
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return true;
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}
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DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) {
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switch(request) {
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2008-12-11 15:21:40 +00:00
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case SERVICE_CONTROL_INTERROGATE:
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SetServiceStatus(statushandle, &status);
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return NO_ERROR;
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2003-08-02 20:50:38 +00:00
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case SERVICE_CONTROL_STOP:
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_STOP");
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2003-08-02 20:50:38 +00:00
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break;
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case SERVICE_CONTROL_SHUTDOWN:
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN");
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2003-08-02 20:50:38 +00:00
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break;
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default:
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_WARNING, "Got unexpected request %d", request);
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2003-08-02 20:50:38 +00:00
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return ERROR_CALL_NOT_IMPLEMENTED;
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}
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2007-05-18 09:51:54 +00:00
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event_loopexit(NULL);
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2012-10-10 15:17:49 +00:00
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status.dwWaitHint = 30000;
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status.dwCurrentState = SERVICE_STOP_PENDING;
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2007-05-18 09:51:54 +00:00
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SetServiceStatus(statushandle, &status);
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return NO_ERROR;
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2003-08-02 20:50:38 +00:00
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}
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2007-05-18 10:00:00 +00:00
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VOID WINAPI run_service(DWORD argc, LPTSTR* argv) {
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2003-08-02 20:50:38 +00:00
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int err = 1;
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extern int main2(int argc, char **argv);
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2000-11-16 22:12:23 +00:00
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2012-10-10 15:17:49 +00:00
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status.dwServiceType = SERVICE_WIN32;
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2003-08-02 20:50:38 +00:00
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status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
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2012-10-10 15:17:49 +00:00
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status.dwWin32ExitCode = 0;
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status.dwServiceSpecificExitCode = 0;
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status.dwCheckPoint = 0;
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2000-11-24 23:13:07 +00:00
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2012-10-10 15:17:49 +00:00
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statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
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2002-09-09 21:25:28 +00:00
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2003-08-02 20:50:38 +00:00
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if (!statushandle) {
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
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2003-08-02 20:50:38 +00:00
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err = 1;
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} else {
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2012-10-10 15:17:49 +00:00
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status.dwWaitHint = 30000;
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status.dwCurrentState = SERVICE_START_PENDING;
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2003-08-03 12:38:18 +00:00
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SetServiceStatus(statushandle, &status);
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2012-10-10 15:17:49 +00:00
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status.dwWaitHint = 0;
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2003-08-03 12:38:18 +00:00
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status.dwCurrentState = SERVICE_RUNNING;
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2003-08-02 20:50:38 +00:00
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SetServiceStatus(statushandle, &status);
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err = main2(argc, argv);
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2003-08-08 12:55:05 +00:00
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status.dwWaitHint = 0;
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2012-10-10 15:17:49 +00:00
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status.dwCurrentState = SERVICE_STOPPED;
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//status.dwWin32ExitCode = err;
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2003-08-02 20:50:38 +00:00
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SetServiceStatus(statushandle, &status);
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}
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return;
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}
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bool init_service(void) {
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SERVICE_TABLE_ENTRY services[] = {
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{identname, run_service},
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{NULL, NULL}
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};
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if(!StartServiceCtrlDispatcher(services)) {
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if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
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return false;
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}
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else
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError()));
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2003-08-02 20:50:38 +00:00
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}
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return true;
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2000-11-16 22:12:23 +00:00
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}
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2003-08-02 20:50:38 +00:00
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#endif
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2000-11-16 22:12:23 +00:00
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/*
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2007-05-19 14:13:21 +00:00
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Detach from current terminal
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2000-11-16 17:54:29 +00:00
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*/
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2007-05-18 10:00:00 +00:00
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bool detach(void) {
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2003-07-28 22:06:09 +00:00
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#ifndef HAVE_MINGW
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2011-06-03 13:50:20 +00:00
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signal(SIGPIPE, SIG_IGN);
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signal(SIGUSR1, SIG_IGN);
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signal(SIGUSR2, SIG_IGN);
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signal(SIGWINCH, SIG_IGN);
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2011-06-02 20:14:53 +00:00
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2003-07-21 14:47:43 +00:00
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closelogger();
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2003-08-02 20:50:38 +00:00
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#endif
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2002-09-09 21:25:28 +00:00
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if(do_detach) {
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2003-08-02 20:50:38 +00:00
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#ifndef HAVE_MINGW
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2003-07-22 20:55:21 +00:00
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if(daemon(0, 0)) {
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2012-10-14 13:37:24 +00:00
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logger(DEBUG_ALWAYS, LOG_ERR, "Couldn't detach from terminal: %s", strerror(errno));
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2003-07-22 20:55:21 +00:00
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return false;
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2002-09-09 21:25:28 +00:00
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}
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2003-08-02 20:50:38 +00:00
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#else
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if(!statushandle)
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2012-07-21 15:10:10 +00:00
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exit(!install_service());
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2003-07-28 22:06:09 +00:00
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#endif
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2003-08-02 20:50:38 +00:00
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}
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2000-11-25 13:33:33 +00:00
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2003-07-06 22:11:37 +00:00
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openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
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2002-09-09 21:25:28 +00:00
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_ALWAYS, LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
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2003-07-06 22:11:37 +00:00
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VERSION, __DATE__, __TIME__, debug_level);
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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return true;
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2000-11-16 17:54:29 +00:00
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}
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2007-05-18 10:00:00 +00:00
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bool execute_script(const char *name, char **envp) {
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2003-08-08 14:48:33 +00:00
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#ifdef HAVE_SYSTEM
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2010-11-16 15:45:36 +00:00
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char *scriptname;
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2012-10-07 15:53:23 +00:00
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char *command;
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2002-09-09 21:25:28 +00:00
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2012-10-07 15:53:23 +00:00
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xasprintf(&scriptname, "%s" SLASH "%s%s", confbase, name, scriptextension);
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2003-08-16 12:11:11 +00:00
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2002-09-09 21:25:28 +00:00
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/* First check if there is a script */
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2012-10-07 15:53:23 +00:00
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if(access(scriptname, F_OK)) {
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2007-02-14 09:21:34 +00:00
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free(scriptname);
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2003-07-22 20:55:21 +00:00
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return true;
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2007-02-14 09:21:34 +00:00
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}
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2002-09-09 21:25:28 +00:00
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2012-02-26 17:37:36 +00:00
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logger(DEBUG_STATUS, LOG_INFO, "Executing script %s", name);
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2003-08-08 22:45:46 +00:00
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2003-08-08 19:56:11 +00:00
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#ifdef HAVE_PUTENV
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2003-08-08 14:48:33 +00:00
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/* Set environment */
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2012-10-10 15:17:49 +00:00
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2012-10-07 15:53:23 +00:00
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for(int i = 0; envp[i]; i++)
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2004-06-14 14:32:10 +00:00
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putenv(envp[i]);
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2003-08-08 19:56:11 +00:00
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#endif
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2002-09-09 21:25:28 +00:00
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2012-10-07 15:53:23 +00:00
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if(scriptinterpreter)
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xasprintf(&command, "%s \"%s\"", scriptinterpreter, scriptname);
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else
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xasprintf(&command, "\"%s\"", scriptname);
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int status = system(command);
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2003-08-08 14:48:33 +00:00
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2012-10-07 15:53:23 +00:00
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free(command);
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2003-08-08 14:48:33 +00:00
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free(scriptname);
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2004-06-14 14:32:10 +00:00
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/* Unset environment */
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2012-10-07 15:53:23 +00:00
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for(int i = 0; envp[i]; i++) {
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2004-06-14 14:32:10 +00:00
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char *e = strchr(envp[i], '=');
|
2004-10-01 18:24:41 +00:00
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if(e) {
|
2010-11-16 15:45:36 +00:00
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char p[e - envp[i] + 1];
|
2004-10-01 18:24:41 +00:00
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strncpy(p, envp[i], e - envp[i]);
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p[e - envp[i]] = '\0';
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putenv(p);
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|
}
|
2004-06-14 14:32:10 +00:00
|
|
|
}
|
2003-08-08 14:48:33 +00:00
|
|
|
|
2003-08-08 19:43:47 +00:00
|
|
|
#ifdef WEXITSTATUS
|
2003-08-08 14:48:33 +00:00
|
|
|
if(status != -1) {
|
2012-10-10 15:17:49 +00:00
|
|
|
if(WIFEXITED(status)) { /* Child exited by itself */
|
2003-08-08 14:48:33 +00:00
|
|
|
if(WEXITSTATUS(status)) {
|
2012-02-26 17:37:36 +00:00
|
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Script %s exited with non-zero status %d",
|
2003-08-08 22:11:54 +00:00
|
|
|
name, WEXITSTATUS(status));
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
2012-10-10 15:17:49 +00:00
|
|
|
} else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
|
2012-02-26 17:37:36 +00:00
|
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Script %s was killed by signal %d (%s)",
|
2003-08-08 14:48:33 +00:00
|
|
|
name, WTERMSIG(status), strsignal(WTERMSIG(status)));
|
|
|
|
return false;
|
2012-10-10 15:17:49 +00:00
|
|
|
} else { /* Something strange happened */
|
2012-02-26 17:37:36 +00:00
|
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Script %s terminated abnormally", name);
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
2003-08-08 14:48:33 +00:00
|
|
|
} else {
|
2012-02-26 17:37:36 +00:00
|
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));
|
2003-08-08 14:48:33 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
2003-08-08 19:43:47 +00:00
|
|
|
#endif
|
2003-07-28 22:06:09 +00:00
|
|
|
#endif
|
2003-08-08 14:48:33 +00:00
|
|
|
return true;
|
2000-11-16 17:54:29 +00:00
|
|
|
}
|