NSSM 2.5.

[nssm.git] / service.cpp

diff --git a/service.cpp b/service.cpp
index ef1ae42..8c42972 100644 (file)
--- a/service.cpp
+++ b/service.cpp
@@ -9,8 +9,8 @@ char exe[EXE_LENGTH];
 char flags[CMD_LENGTH];\r
 char dir[MAX_PATH];\r
 \r
-static enum { NSSM_EXIT_RESTART, NSSM_EXIT_IGNORE, NSSM_EXIT_REALLY } exit_actions;\r
-static const char *exit_action_strings[] = { "Restart", "Ignore", "Exit", 0 };\r
+static enum { NSSM_EXIT_RESTART, NSSM_EXIT_IGNORE, NSSM_EXIT_REALLY, NSSM_EXIT_UNCLEAN } exit_actions;\r
+static const char *exit_action_strings[] = { "Restart", "Ignore", "Exit", "Suicide", 0 };\r
 \r
 /* Connect to the service manager */\r
 SC_HANDLE open_service_manager() {\r
@@ -146,7 +146,6 @@ void WINAPI service_main(unsigned long argc, char **argv) {
   /* Initialise status */\r
   ZeroMemory(&service_status, sizeof(service_status));\r
   service_status.dwServiceType = SERVICE_WIN32_OWN_PROCESS | SERVICE_INTERACTIVE_PROCESS;\r
-  service_status.dwCurrentState = SERVICE_RUNNING;\r
   service_status.dwControlsAccepted = SERVICE_ACCEPT_SHUTDOWN | SERVICE_ACCEPT_STOP;\r
   service_status.dwWin32ExitCode = NO_ERROR;\r
   service_status.dwServiceSpecificExitCode = 0;\r
@@ -156,26 +155,52 @@ void WINAPI service_main(unsigned long argc, char **argv) {
   /* Signal we AREN'T running the server */\r
   pid = 0;\r
 \r
+  /* Register control handler */\r
+  service_handle = RegisterServiceCtrlHandlerEx(NSSM, service_control_handler, 0);\r
+  if (! service_handle) {\r
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_REGISTERSERVICECTRLHANDER_FAILED, GetLastError(), 0);\r
+    return;\r
+  }\r
+\r
   /* Get startup parameters */\r
   int ret = get_parameters(argv[0], exe, sizeof(exe), flags, sizeof(flags), dir, sizeof(dir));\r
   if (ret) {\r
     log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_GET_PARAMETERS_FAILED, argv[0], 0);\r
+    service_status.dwCurrentState = SERVICE_STOPPED;\r
+    /* An accurate, if not particularly helpful, status */\r
+    service_status.dwWin32ExitCode = ERROR_SERVICE_NOT_ACTIVE;\r
+    SetServiceStatus(service_handle, &service_status);\r
     return;\r
   }\r
 \r
-  /* Register control handler */\r
-  service_handle = RegisterServiceCtrlHandlerEx(NSSM, service_control_handler, 0);\r
-  if (! service_handle) {\r
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_REGISTERSERVICECTRLHANDER_FAILED, GetLastError(), 0);\r
-    return;\r
-  }\r
+  service_status.dwCurrentState = SERVICE_START_PENDING;\r
+  SetServiceStatus(service_handle, &service_status);\r
 \r
   /* Try to create the exit action parameters; we don't care if it fails */\r
   create_exit_action(argv[0], exit_action_strings[0]);\r
 \r
+  set_service_recovery(service_name);\r
+\r
   monitor_service();\r
 }\r
 \r
+/* Make sure service recovery actions are taken where necessary */\r
+void set_service_recovery(char *service_name) {\r
+  SC_HANDLE services = open_service_manager();\r
+  if (! services) return;\r
+\r
+  SC_HANDLE service = OpenService(services, service_name, SC_MANAGER_ALL_ACCESS);\r
+  if (! service) return;\r
+  return;\r
+\r
+  SERVICE_FAILURE_ACTIONS_FLAG flag;\r
+  ZeroMemory(&flag, sizeof(flag));\r
+  flag.fFailureActionsOnNonCrashFailures = true;\r
+\r
+  /* This functionality was added in Vista so the call may fail */\r
+  ChangeServiceConfig2(service, SERVICE_CONFIG_FAILURE_ACTIONS_FLAG, &flag);\r
+}\r
+\r
 int monitor_service() {\r
   /* Set service status to started */\r
   int ret = start_service();\r
@@ -200,7 +225,7 @@ unsigned long WINAPI service_control_handler(unsigned long control, unsigned lon
   switch (control) {\r
     case SERVICE_CONTROL_SHUTDOWN:\r
     case SERVICE_CONTROL_STOP:\r
-      stop_service(0);\r
+      stop_service(0, true, true);\r
       return NO_ERROR;\r
   }\r
 \r
@@ -225,11 +250,11 @@ int start_service() {
   char cmd[CMD_LENGTH];\r
   if (_snprintf(cmd, sizeof(cmd), "%s %s", exe, flags) < 0) {\r
     log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "command line", "start_service", 0);\r
-    return stop_service(2);\r
+    return stop_service(2, true, true);\r
   }\r
   if (! CreateProcess(0, cmd, 0, 0, 0, 0, 0, dir, &si, &pi)) {\r
     log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEPROCESS_FAILED, service_name, exe, GetLastError(), 0);\r
-    return stop_service(3);\r
+    return stop_service(3, true, true);\r
   }\r
   pid = pi.hProcess;\r
 \r
@@ -241,10 +266,17 @@ int start_service() {
 }\r
 \r
 /* Stop the service */\r
-int stop_service(unsigned long exitcode) {\r
+int stop_service(unsigned long exitcode, bool graceful, bool default_action) {\r
+  if (default_action && ! exitcode && ! graceful) {\r
+    log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_GRACEFUL_SUICIDE, service_name, exe, exit_action_strings[NSSM_EXIT_UNCLEAN], exit_action_strings[NSSM_EXIT_UNCLEAN], exit_action_strings[NSSM_EXIT_UNCLEAN], exit_action_strings[NSSM_EXIT_REALLY] ,0);\r
+    graceful = true;\r
+  }\r
+\r
   /* Signal we are stopping */\r
-  service_status.dwCurrentState = SERVICE_STOP_PENDING;\r
-  SetServiceStatus(service_handle, &service_status);\r
+  if (graceful) {\r
+    service_status.dwCurrentState = SERVICE_STOP_PENDING;\r
+    SetServiceStatus(service_handle, &service_status);\r
+  }\r
 \r
   /* Nothing to do if server isn't running */\r
   if (pid) {\r
@@ -256,16 +288,18 @@ int stop_service(unsigned long exitcode) {
   else log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_PROCESS_ALREADY_STOPPED, service_name, exe, 0);\r
 \r
   /* Signal we stopped */\r
-  service_status.dwCurrentState = SERVICE_STOPPED;\r
-  if (exitcode) {\r
-    service_status.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;\r
-    service_status.dwServiceSpecificExitCode = exitcode;\r
-  }\r
-  else {\r
-    service_status.dwWin32ExitCode = NO_ERROR;\r
-    service_status.dwServiceSpecificExitCode = 0;\r
+  if (graceful) {\r
+    service_status.dwCurrentState = SERVICE_STOPPED;\r
+    if (exitcode) {\r
+      service_status.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;\r
+      service_status.dwServiceSpecificExitCode = exitcode;\r
+    }\r
+    else {\r
+      service_status.dwWin32ExitCode = NO_ERROR;\r
+      service_status.dwServiceSpecificExitCode = 0;\r
+    }\r
+    SetServiceStatus(service_handle, &service_status);\r
   }\r
-  SetServiceStatus(service_handle, &service_status);\r
 \r
   return exitcode;\r
 }\r
@@ -283,7 +317,8 @@ void CALLBACK end_service(void *arg, unsigned char why) {
   /* What action should we take? */\r
   int action = NSSM_EXIT_RESTART;\r
   unsigned char action_string[ACTION_LEN];\r
-  if (! get_exit_action(service_name, &ret, action_string)) {\r
+  bool default_action;\r
+  if (! get_exit_action(service_name, &ret, action_string, &default_action)) {\r
     for (int i = 0; exit_action_strings[i]; i++) {\r
       if (! _strnicmp((const char *) action_string, exit_action_strings[i], ACTION_LEN)) {\r
         action = i;\r
@@ -312,7 +347,13 @@ void CALLBACK end_service(void *arg, unsigned char why) {
     /* Tell the service manager we are finished */\r
     case NSSM_EXIT_REALLY:\r
       log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_EXIT_REALLY, service_name, code, exit_action_strings[action], 0);\r
-      stop_service(ret);\r
+      stop_service(ret, true, default_action);\r
+    break;\r
+\r
+    /* Fake a crash so pre-Vista service managers will run recovery actions. */\r
+    case NSSM_EXIT_UNCLEAN:\r
+      log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_EXIT_UNCLEAN, service_name, code, exit_action_strings[action], 0);\r
+      exit(stop_service(ret, false, default_action));\r
     break;\r
   }\r
 }\r