Emit a ALERT_SHUTDOWN_SIGNAL before shutting down the daemon

src/charon/bus/bus.h

@@ -133,6 +133,8 @@ enum level_t {
 enum alert_t {
 	/* a RADIUS server did not respond, no additional arguments */
 	ALERT_RADIUS_NOT_RESPONDING,
+	/* a shutdown signal has been received, argument is a int with the signal */
+	ALERT_SHUTDOWN_SIGNAL,
 };
 
 /**

src/charon/daemon.c

@@ -145,11 +145,13 @@ static void run(private_daemon_t *this)
 			case SIGINT:
 			{
 				DBG1(DBG_DMN, "signal of type SIGINT received. Shutting down");
+				charon->bus->alert(charon->bus, ALERT_SHUTDOWN_SIGNAL, sig);
 				return;
 			}
 			case SIGTERM:
 			{
 				DBG1(DBG_DMN, "signal of type SIGTERM received. Shutting down");
+				charon->bus->alert(charon->bus, ALERT_SHUTDOWN_SIGNAL, sig);
 				return;
 			}
 			default: