/*
process.c -- process management functions
Copyright (C) 1999-2005 Ivo Timmermans,
- 2000-2012 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2018 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
#include "system.h"
-#include "conf.h"
-#include "connection.h"
-#include "control.h"
-#include "device.h"
-#include "edge.h"
#include "logger.h"
-#include "net.h"
-#include "node.h"
+#include "names.h"
#include "process.h"
-#include "subnet.h"
+#include "version.h"
+
+#ifdef HAVE_MINGW
#include "utils.h"
-#include "xalloc.h"
+#endif
/* If zero, don't detach from the terminal. */
bool do_detach = true;
-bool sigalrm = false;
-extern char *identname;
extern char **g_argv;
-extern bool use_logfile;
+
+/* If nonzero, use syslog instead of stderr in no-detach mode. */
+bool use_syslog = false;
+
+/* If nonzero, write log entries to a separate file. */
+bool use_logfile = false;
/* Some functions the less gifted operating systems might lack... */
#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 bool install_service(void) {
char command[4096] = "\"";
- SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
+ char description_buffer[] = "Virtual Private Network daemon";
+ SERVICE_DESCRIPTION description = {description_buffer};
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;
}
- if(!strchr(program_name, '\\')) {
- GetCurrentDirectory(sizeof command - 1, command + 1);
- strncat(command, "\\", sizeof command - strlen(command));
- }
-
- strncat(command, program_name, sizeof command - strlen(command));
+ HMODULE module = GetModuleHandle(NULL);
+ GetModuleFileName(module, command + 1, sizeof(command) - 1);
+ command[sizeof(command) - 1] = 0;
- strncat(command, "\"", sizeof command - strlen(command));
+ strncat(command, "\"", sizeof(command) - strlen(command));
for(char **argp = g_argv + 1; *argp; argp++) {
char *space = strchr(*argp, ' ');
- strncat(command, " ", sizeof command - strlen(command));
+ strncat(command, " ", sizeof(command) - strlen(command));
- if(space)
- strncat(command, "\"", sizeof command - strlen(command));
+ if(space) {
+ strncat(command, "\"", sizeof(command) - strlen(command));
+ }
- strncat(command, *argp, sizeof command - strlen(command));
+ strncat(command, *argp, sizeof(command) - strlen(command));
- if(space)
- strncat(command, "\"", sizeof command - strlen(command));
+ if(space) {
+ strncat(command, "\"", sizeof(command) - strlen(command));
+ }
}
service = CreateService(manager, identname, identname,
- SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
- command, NULL, NULL, NULL, NULL, NULL);
+ SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
+ command, NULL, NULL, NULL, NULL, NULL);
if(!service) {
DWORD lasterror = GetLastError();
logger(DEBUG_ALWAYS, LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror));
- if(lasterror != ERROR_SERVICE_EXISTS)
+
+ if(lasterror != ERROR_SERVICE_EXISTS) {
return false;
+ }
}
if(service) {
service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
}
- if(!StartService(service, 0, NULL))
+ if(!StartService(service, 0, NULL)) {
logger(DEBUG_ALWAYS, LOG_WARNING, "Could not start %s service: %s", identname, winerror(GetLastError()));
- else
+ } else {
logger(DEBUG_ALWAYS, LOG_INFO, "%s service started", identname);
+ }
return true;
}
-DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) {
+io_t stop_io;
+
+static DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID data, LPVOID context) {
+ (void)type;
+ (void)data;
+ (void)context;
+
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;
+ 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;
}
- event_loopexit(NULL);
- status.dwWaitHint = 30000;
+ 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) {
+static VOID WINAPI run_service(DWORD argc, LPTSTR *argv) {
extern int main2(int argc, char **argv);
status.dwServiceType = SERVICE_WIN32;
statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
- if (!statushandle) {
+ if(!statushandle) {
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
} else {
status.dwWaitHint = 30000;
if(!StartServiceCtrlDispatcher(services)) {
if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
return false;
- }
- else
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError()));
+ }
}
return true;
Detach from current terminal
*/
bool detach(void) {
+ logmode_t logmode;
+
#ifndef HAVE_MINGW
signal(SIGPIPE, SIG_IGN);
signal(SIGUSR1, SIG_IGN);
if(do_detach) {
#ifndef HAVE_MINGW
- if(daemon(0, 0)) {
+
+ if(daemon(1, 0)) {
logger(DEBUG_ALWAYS, LOG_ERR, "Couldn't detach from terminal: %s", strerror(errno));
return false;
}
+
#else
- if(!statushandle)
+
+ if(!statushandle) {
exit(!install_service());
+ }
+
#endif
}
- openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
-
- logger(DEBUG_ALWAYS, LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
- VERSION, __DATE__, __TIME__, debug_level);
-
- return true;
-}
-
-bool execute_script(const char *name, char **envp) {
-#ifdef HAVE_SYSTEM
- char *scriptname;
- char *command;
-
- xasprintf(&scriptname, "%s" SLASH "%s%s", confbase, name, scriptextension);
-
- /* First check if there is a script */
-
- if(access(scriptname, F_OK)) {
- free(scriptname);
- return true;
+ if(use_logfile) {
+ logmode = LOGMODE_FILE;
+ } else if(use_syslog || do_detach) {
+ logmode = LOGMODE_SYSLOG;
+ } else {
+ logmode = LOGMODE_STDERR;
}
- logger(DEBUG_STATUS, LOG_INFO, "Executing script %s", name);
-
-#ifdef HAVE_PUTENV
- /* Set environment */
-
- for(int i = 0; envp[i]; i++)
- putenv(envp[i]);
-#endif
-
- if(scriptinterpreter)
- xasprintf(&command, "%s \"%s\"", scriptinterpreter, scriptname);
- else
- xasprintf(&command, "\"%s\"", scriptname);
-
- int status = system(command);
-
- free(command);
- free(scriptname);
-
- /* Unset environment */
+ openlogger(identname, logmode);
- for(int i = 0; envp[i]; i++) {
- char *e = strchr(envp[i], '=');
- if(e) {
- char p[e - envp[i] + 1];
- strncpy(p, envp[i], e - envp[i]);
- p[e - envp[i]] = '\0';
- putenv(p);
- }
- }
+ logger(DEBUG_ALWAYS, LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
+ BUILD_VERSION, BUILD_DATE, BUILD_TIME, debug_level);
-#ifdef WEXITSTATUS
- if(status != -1) {
- if(WIFEXITED(status)) { /* Child exited by itself */
- if(WEXITSTATUS(status)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Script %s exited with non-zero status %d",
- name, WEXITSTATUS(status));
- return false;
- }
- } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
- logger(DEBUG_ALWAYS, LOG_ERR, "Script %s was killed by signal %d (%s)",
- name, WTERMSIG(status), strsignal(WTERMSIG(status)));
- return false;
- } else { /* Something strange happened */
- logger(DEBUG_ALWAYS, LOG_ERR, "Script %s terminated abnormally", name);
- return false;
- }
- } else {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));
- return false;
- }
-#endif
-#endif
return true;
}