Migrated scrobbling stuff

src/libs/services/auth/impl/LoginThrottler.hpp

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2019 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <shared_mutex>
+#include <string>
+#include <unordered_map>
+
+#include <Wt/WDateTime.h>
+
+#include "utils/NetAddress.hpp"
+#include "utils/Exception.hpp"
+
+namespace Auth {
+
+class LoginThrottler
+{
+	public:
+		LoginThrottler(std::size_t maxEntries) : _maxEntries {maxEntries} {}
+
+		// user must lock these calls to avoid races
+		bool isClientThrottled(const boost::asio::ip::address& address) const;
+		void onBadClientAttempt(const boost::asio::ip::address& address);
+		void onGoodClientAttempt(const boost::asio::ip::address& address);
+
+	private:
+
+		void removeOutdatedEntries();
+
+		const std::size_t _maxEntries;
+
+		std::unordered_map<boost::asio::ip::address, Wt::WDateTime>	_attemptsInfo;
+};
+
+
+} // Auth
+