NSSM 2.4.

[nssm.git] / service.cpp

diff --git a/service.cpp b/service.cpp
index b8b9992..0bcc30c 100644 (file)
--- a/service.cpp
+++ b/service.cpp
@@ -4,13 +4,13 @@ SERVICE_STATUS service_status;
 SERVICE_STATUS_HANDLE service_handle;\r
 HANDLE wait_handle;\r
 HANDLE pid;\r
-static char service_name[MAX_PATH];\r
-char exe[MAX_PATH];\r
-char flags[MAX_PATH];\r
+static char service_name[SERVICE_NAME_LENGTH];\r
+char exe[EXE_LENGTH];\r
+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
@@ -59,10 +59,10 @@ int install_service(char *name, char *exe, char *flags) {
   GetModuleFileName(0, path, MAX_PATH);\r
 \r
   /* Construct command */\r
-  char command[MAX_PATH];\r
+  char command[CMD_LENGTH];\r
   size_t runlen = strlen(NSSM_RUN);\r
   size_t pathlen = strlen(path);\r
-  if (pathlen + runlen + 2 >= MAX_PATH) {\r
+  if (pathlen + runlen + 2 >= VALUE_LENGTH) {\r
     fprintf(stderr, "The full path to " NSSM " is too long!\n");\r
     return 3;\r
   }\r
@@ -173,9 +173,28 @@ void WINAPI service_main(unsigned long argc, char **argv) {
   /* 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 +219,7 @@ 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);\r
       return NO_ERROR;\r
   }\r
 \r
@@ -222,14 +241,14 @@ int start_service() {
   ZeroMemory(&pi, sizeof(pi));\r
 \r
   /* Launch executable with arguments */\r
-  char cmd[MAX_PATH];\r
+  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);\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);\r
   }\r
   pid = pi.hProcess;\r
 \r
@@ -241,10 +260,12 @@ int start_service() {
 }\r
 \r
 /* Stop the service */\r
-int stop_service(unsigned long exitcode) {\r
+int stop_service(unsigned long exitcode, bool graceful) {\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 +277,18 @@ 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
@@ -312,7 +335,13 @@ 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);\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));\r
     break;\r
   }\r
 }\r