2 process.c -- process management functions
3 Copyright (C) 1999-2005 Ivo Timmermans,
4 2000-2011 Guus Sliepen <guus@tinc-vpn.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #include "connection.h"
36 /* If zero, don't detach from the terminal. */
37 bool do_detach = true;
40 extern char *identname;
42 extern bool use_logfile;
44 /* Some functions the less gifted operating systems might lack... */
47 extern char *identname;
48 extern char *program_name;
51 static SC_HANDLE manager = NULL;
52 static SC_HANDLE service = NULL;
53 static SERVICE_STATUS status = {0};
54 static SERVICE_STATUS_HANDLE statushandle = 0;
56 static bool install_service(void) {
57 char command[4096] = "\"";
58 SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
60 manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
62 logger(DEBUG_ALWAYS, LOG_ERR, "Could not open service manager: %s", winerror(GetLastError()));
66 if(!strchr(program_name, '\\')) {
67 GetCurrentDirectory(sizeof command - 1, command + 1);
68 strncat(command, "\\", sizeof command - strlen(command));
71 strncat(command, program_name, sizeof command - strlen(command));
73 strncat(command, "\"", sizeof command - strlen(command));
75 for(char **argp = g_argv + 1; *argp; argp++) {
76 char &space = strchr(*argp, ' ');
77 strncat(command, " ", sizeof command - strlen(command));
80 strncat(command, "\"", sizeof command - strlen(command));
82 strncat(command, *argp, sizeof command - strlen(command));
85 strncat(command, "\"", sizeof command - strlen(command));
88 service = CreateService(manager, identname, identname,
89 SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
90 command, NULL, NULL, NULL, NULL, NULL);
93 DWORD lasterror = GetLastError();
94 logger(DEBUG_ALWAYS, LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror));
95 if(lasterror != ERROR_SERVICE_EXISTS)
100 ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
101 logger(DEBUG_ALWAYS, LOG_INFO, "%s service installed", identname);
103 service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
106 if(!StartService(service, 0, NULL))
107 logger(DEBUG_ALWAYS, LOG_WARNING, "Could not start %s service: %s", identname, winerror(GetLastError()));
109 logger(DEBUG_ALWAYS, LOG_INFO, "%s service started", identname);
114 DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) {
116 case SERVICE_CONTROL_INTERROGATE:
117 SetServiceStatus(statushandle, &status);
119 case SERVICE_CONTROL_STOP:
120 logger(DEBUG_ALWAYS, LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_STOP");
122 case SERVICE_CONTROL_SHUTDOWN:
123 logger(DEBUG_ALWAYS, LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN");
126 logger(DEBUG_ALWAYS, LOG_WARNING, "Got unexpected request %d", request);
127 return ERROR_CALL_NOT_IMPLEMENTED;
130 event_loopexit(NULL);
131 status.dwWaitHint = 30000;
132 status.dwCurrentState = SERVICE_STOP_PENDING;
133 SetServiceStatus(statushandle, &status);
137 VOID WINAPI run_service(DWORD argc, LPTSTR* argv) {
139 extern int main2(int argc, char **argv);
142 status.dwServiceType = SERVICE_WIN32;
143 status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
144 status.dwWin32ExitCode = 0;
145 status.dwServiceSpecificExitCode = 0;
146 status.dwCheckPoint = 0;
148 statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
151 logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
154 status.dwWaitHint = 30000;
155 status.dwCurrentState = SERVICE_START_PENDING;
156 SetServiceStatus(statushandle, &status);
158 status.dwWaitHint = 0;
159 status.dwCurrentState = SERVICE_RUNNING;
160 SetServiceStatus(statushandle, &status);
162 err = main2(argc, argv);
164 status.dwWaitHint = 0;
165 status.dwCurrentState = SERVICE_STOPPED;
166 //status.dwWin32ExitCode = err;
167 SetServiceStatus(statushandle, &status);
173 bool init_service(void) {
174 SERVICE_TABLE_ENTRY services[] = {
175 {identname, run_service},
179 if(!StartServiceCtrlDispatcher(services)) {
180 if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
184 logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError()));
192 Detach from current terminal
196 signal(SIGPIPE, SIG_IGN);
197 signal(SIGUSR1, SIG_IGN);
198 signal(SIGUSR2, SIG_IGN);
199 signal(SIGWINCH, SIG_IGN);
207 fprintf(stderr, "Couldn't detach from terminal: %s",
213 exit(!install_service());
217 openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
219 logger(DEBUG_ALWAYS, LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
220 VERSION, __DATE__, __TIME__, debug_level);
225 bool execute_script(const char *name, char **envp) {
230 xasprintf(&scriptname, "%s" SLASH "%s%s", confbase, name, scriptextension);
232 /* First check if there is a script */
234 if(access(scriptname, F_OK)) {
239 logger(DEBUG_STATUS, LOG_INFO, "Executing script %s", name);
242 /* Set environment */
244 for(int i = 0; envp[i]; i++)
248 if(scriptinterpreter)
249 xasprintf(&command, "%s \"%s\"", scriptinterpreter, scriptname);
251 xasprintf(&command, "\"%s\"", scriptname);
253 int status = system(command);
258 /* Unset environment */
260 for(int i = 0; envp[i]; i++) {
261 char *e = strchr(envp[i], '=');
263 char p[e - envp[i] + 1];
264 strncpy(p, envp[i], e - envp[i]);
265 p[e - envp[i]] = '\0';
272 if(WIFEXITED(status)) { /* Child exited by itself */
273 if(WEXITSTATUS(status)) {
274 logger(DEBUG_ALWAYS, LOG_ERR, "Script %s exited with non-zero status %d",
275 name, WEXITSTATUS(status));
278 } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
279 logger(DEBUG_ALWAYS, LOG_ERR, "Script %s was killed by signal %d (%s)",
280 name, WTERMSIG(status), strsignal(WTERMSIG(status)));
282 } else { /* Something strange happened */
283 logger(DEBUG_ALWAYS, LOG_ERR, "Script %s terminated abnormally", name);
287 logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));