Fix incorrect handling of anonymous bridges on the local broker.

Thanks to Jan-Piet Mens.

ChangeLog.txt

@@ -1,3 +1,10 @@
+1.3.3 - 20140801
+================
+
+Broker:
+- Fix incorrect handling of anonymous bridges on the local broker.
+
+
 1.3.2 - 20140713
 ================
 

src/bridge.c

@@ -162,19 +162,24 @@ int mqtt3_bridge_connect(struct mosquitto_db *db, struct mosquitto *context)
 		mqtt3_db_messages_delete(context);
 	}
 
-	rc = mosquitto_unpwd_check(db, context->bridge->local_username, context->bridge->local_password);
-	switch(rc){
-		case MOSQ_ERR_SUCCESS:
-			break;
-		case MOSQ_ERR_AUTH:
-			_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Bridge %s failed authentication on local broker.", context->id);
-			return rc;
-		case MOSQ_ERR_UNKNOWN:
-			_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Bridge %s returned application error in authorisation.", context->id);
-			return rc;
-		default:
-			_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Unknown error in authentication for bridge %s.", context->id);
-			return rc;
+	if(context->bridge->local_username){
+		rc = mosquitto_unpwd_check(db, context->bridge->local_username, context->bridge->local_password);
+		switch(rc){
+			case MOSQ_ERR_SUCCESS:
+				break;
+			case MOSQ_ERR_AUTH:
+				_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Bridge %s failed authentication on local broker.", context->id);
+				return rc;
+			case MOSQ_ERR_UNKNOWN:
+				_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Bridge %s returned application error in authorisation.", context->id);
+				return rc;
+			default:
+				_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Unknown error in authentication for bridge %s.", context->id);
+				return rc;
+		}
+	}else if(!db->config->allow_anonymous){
+		_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Bridge %s requires a username on local broker.", context->id);
+		return MOSQ_ERR_AUTH;
 	}
 
 	/* Delete all local subscriptions even for clean_session==false. We don't