Run hooks in response to certain events.

[nssm.git] / registry.cpp

diff --git a/registry.cpp b/registry.cpp
index 725844b..00d6eaf 100644 (file)
--- a/registry.cpp
+++ b/registry.cpp
@@ -735,3 +735,57 @@ int get_exit_action(const TCHAR *service_name, unsigned long *ret, TCHAR *action
 \r
   return 0;\r
 }\r
+\r
+int set_hook(const TCHAR *service_name, const TCHAR *hook_event, const TCHAR *hook_action, TCHAR *cmd) {\r
+  /* Try to open the registry */\r
+  TCHAR registry[KEY_LENGTH];\r
+  if (_sntprintf_s(registry, _countof(registry), _TRUNCATE, _T("%s\\%s"), NSSM_REG_HOOK, hook_event) < 0) {\r
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("hook registry"), _T("set_hook()"), 0);\r
+    return 1;\r
+  }\r
+\r
+  HKEY key;\r
+  long error;\r
+\r
+  /* Don't create keys needlessly. */\r
+  if (! _tcslen(cmd)) {\r
+    key = open_registry(service_name, registry, KEY_READ, false);\r
+    if (! key) return 0;\r
+    error = RegQueryValueEx(key, hook_action, 0, 0, 0, 0);\r
+    RegCloseKey(key);\r
+    if (error == ERROR_FILE_NOT_FOUND) return 0;\r
+  }\r
+\r
+  key = open_registry(service_name, registry, KEY_WRITE);\r
+  if (! key) return 1;\r
+\r
+  int ret = 1;\r
+  if (_tcslen(cmd)) ret = set_string(key, (TCHAR *) hook_action, cmd, true);\r
+  else {\r
+    error = RegDeleteValue(key, hook_action);\r
+    if (error == ERROR_SUCCESS || error == ERROR_FILE_NOT_FOUND) ret = 0;\r
+  }\r
+\r
+  /* Close registry */\r
+  RegCloseKey(key);\r
+\r
+  return ret;\r
+}\r
+\r
+int get_hook(const TCHAR *service_name, const TCHAR *hook_event, const TCHAR *hook_action, TCHAR *buffer, unsigned long buflen) {\r
+  /* Try to open the registry */\r
+  TCHAR registry[KEY_LENGTH];\r
+  if (_sntprintf_s(registry, _countof(registry), _TRUNCATE, _T("%s\\%s"), NSSM_REG_HOOK, hook_event) < 0) {\r
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("hook registry"), _T("get_hook()"), 0);\r
+    return 1;\r
+  }\r
+  HKEY key = open_registry(service_name, registry, KEY_READ, false);\r
+  if (! key) return 1;\r
+\r
+  int ret = expand_parameter(key, (TCHAR *) hook_action, buffer, buflen, true, false);\r
+\r
+  /* Close registry */\r
+  RegCloseKey(key);\r
+\r
+  return ret;\r
+}\r