gateway: Limit regex match length

gateway/httpgateway.cpp

@@ -124,8 +124,8 @@ void HttpGateway::work(RequestWorker &worker)
 
 		res = convertResponse(wikiresponse);
 	};
-	server.Get("/(.*)", handler);
+	server.Get("/(.{0,255})", handler);
-	server.Post("/(.*)", handler);
+	server.Post("/(.{0,255})", handler);
 	server.listen(this->listenaddr.c_str(), this->listenport);
 
 }