2 process.c -- process management functions
3 Copyright (C) 1999-2005 Ivo Timmermans,
4 2000-2012 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"
37 /* If zero, don't detach from the terminal. */
38 bool do_detach = true;
41 extern char *identname;
43 extern bool use_logfile;
45 /* Some functions the less gifted operating systems might lack... */
48 extern char *identname;
49 extern char *program_name;
52 static SC_HANDLE manager = NULL;
53 static SC_HANDLE service = NULL;
54 static SERVICE_STATUS status = {0};
55 static SERVICE_STATUS_HANDLE statushandle = 0;
57 static bool install_service(void) {
58 char command[4096] = "\"";
59 SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
61 manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
63 logger(DEBUG_ALWAYS, LOG_ERR, "Could not open service manager: %s", winerror(GetLastError()));
67 if(!strchr(program_name, '\\')) {
68 GetCurrentDirectory(sizeof command - 1, command + 1);
69 strncat(command, "\\", sizeof command - strlen(command));
72 strncat(command, program_name, sizeof command - strlen(command));
74 strncat(command, "\"", sizeof command - strlen(command));
76 for(char **argp = g_argv + 1; *argp; argp++) {
77 char *space = strchr(*argp, ' ');
78 strncat(command, " ", sizeof command - strlen(command));
81 strncat(command, "\"", sizeof command - strlen(command));
83 strncat(command, *argp, sizeof command - strlen(command));
86 strncat(command, "\"", sizeof command - strlen(command));
89 service = CreateService(manager, identname, identname,
90 SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
91 command, NULL, NULL, NULL, NULL, NULL);
94 DWORD lasterror = GetLastError();
95 logger(DEBUG_ALWAYS, LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror));
96 if(lasterror != ERROR_SERVICE_EXISTS)
101 ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
102 logger(DEBUG_ALWAYS, LOG_INFO, "%s service installed", identname);
104 service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
107 if(!StartService(service, 0, NULL))
108 logger(DEBUG_ALWAYS, LOG_WARNING, "Could not start %s service: %s", identname, winerror(GetLastError()));
110 logger(DEBUG_ALWAYS, LOG_INFO, "%s service started", identname);
115 DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) {
117 case SERVICE_CONTROL_INTERROGATE:
118 SetServiceStatus(statushandle, &status);
120 case SERVICE_CONTROL_STOP:
121 logger(DEBUG_ALWAYS, LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_STOP");
123 case SERVICE_CONTROL_SHUTDOWN:
124 logger(DEBUG_ALWAYS, LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN");
127 logger(DEBUG_ALWAYS, LOG_WARNING, "Got unexpected request %d", (int)request);
128 return ERROR_CALL_NOT_IMPLEMENTED;
132 status.dwWaitHint = 30000;
133 status.dwCurrentState = SERVICE_STOP_PENDING;
134 SetServiceStatus(statushandle, &status);
138 VOID WINAPI run_service(DWORD argc, LPTSTR* argv) {
139 extern int main2(int argc, char **argv);
141 status.dwServiceType = SERVICE_WIN32;
142 status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
143 status.dwWin32ExitCode = 0;
144 status.dwServiceSpecificExitCode = 0;
145 status.dwCheckPoint = 0;
147 statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
150 logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
152 status.dwWaitHint = 30000;
153 status.dwCurrentState = SERVICE_START_PENDING;
154 SetServiceStatus(statushandle, &status);
156 status.dwWaitHint = 0;
157 status.dwCurrentState = SERVICE_RUNNING;
158 SetServiceStatus(statushandle, &status);
162 status.dwWaitHint = 0;
163 status.dwCurrentState = SERVICE_STOPPED;
164 SetServiceStatus(statushandle, &status);
170 bool init_service(void) {
171 SERVICE_TABLE_ENTRY services[] = {
172 {identname, run_service},
176 if(!StartServiceCtrlDispatcher(services)) {
177 if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
181 logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError()));
189 Detach from current terminal
193 signal(SIGPIPE, SIG_IGN);
194 signal(SIGUSR1, SIG_IGN);
195 signal(SIGUSR2, SIG_IGN);
196 signal(SIGWINCH, SIG_IGN);
204 logger(DEBUG_ALWAYS, LOG_ERR, "Couldn't detach from terminal: %s", strerror(errno));
209 exit(!install_service());
213 openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
215 logger(DEBUG_ALWAYS, LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
216 VERSION, __DATE__, __TIME__, debug_level);
221 bool execute_script(const char *name, char **envp) {
226 xasprintf(&scriptname, "%s" SLASH "%s%s", confbase, name, scriptextension);
228 /* First check if there is a script */
230 if(access(scriptname, F_OK)) {
235 logger(DEBUG_STATUS, LOG_INFO, "Executing script %s", name);
238 /* Set environment */
240 for(int i = 0; envp[i]; i++)
244 if(scriptinterpreter)
245 xasprintf(&command, "%s \"%s\"", scriptinterpreter, scriptname);
247 xasprintf(&command, "\"%s\"", scriptname);
249 int status = system(command);
254 /* Unset environment */
256 for(int i = 0; envp[i]; i++) {
257 char *e = strchr(envp[i], '=');
259 char p[e - envp[i] + 1];
260 strncpy(p, envp[i], e - envp[i]);
261 p[e - envp[i]] = '\0';
268 if(WIFEXITED(status)) { /* Child exited by itself */
269 if(WEXITSTATUS(status)) {
270 logger(DEBUG_ALWAYS, LOG_ERR, "Script %s exited with non-zero status %d",
271 name, WEXITSTATUS(status));
274 } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
275 logger(DEBUG_ALWAYS, LOG_ERR, "Script %s was killed by signal %d (%s)",
276 name, WTERMSIG(status), strsignal(WTERMSIG(status)));
278 } else { /* Something strange happened */
279 logger(DEBUG_ALWAYS, LOG_ERR, "Script %s terminated abnormally", name);
283 logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));