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/* |
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* This file is part of Araknemu. |
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* |
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* Araknemu is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* Araknemu is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with Araknemu. If not, see <https://www.gnu.org/licenses/>. |
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* |
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* Copyright (c) 2017-2019 Vincent Quatrevieux |
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*/ |
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package fr.quatrevieux.araknemu.game.chat.channel; |
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import fr.quatrevieux.araknemu.game.GameConfiguration; |
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import fr.quatrevieux.araknemu.game.chat.ChannelType; |
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import fr.quatrevieux.araknemu.game.chat.ChatException; |
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import fr.quatrevieux.araknemu.game.player.GamePlayer; |
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import fr.quatrevieux.araknemu.network.game.in.chat.Message; |
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import fr.quatrevieux.araknemu.network.game.out.info.Information; |
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import java.util.concurrent.ConcurrentHashMap; |
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import java.util.concurrent.ConcurrentMap; |
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/** |
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* Decorate channel for adding flood guard |
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*/ |
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public final class FloodGuardChannel implements Channel { |
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private final Channel channel; |
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private final GameConfiguration.ChatConfiguration configuration; |
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private final ConcurrentMap<Integer, Long> lastSentTime = new ConcurrentHashMap<>(); |
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public FloodGuardChannel(Channel channel, GameConfiguration.ChatConfiguration configuration) { |
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this.channel = channel; |
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this.configuration = configuration; |
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} |
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@Override |
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public ChannelType type() { |
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return channel.type(); |
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} |
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@Override |
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public boolean authorized(GamePlayer from) { |
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1 |
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return channel.authorized(from); |
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} |
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@Override |
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public void send(GamePlayer from, Message message) throws ChatException { |
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if (!checkFlood(from)) { |
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return; |
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} |
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channel.send(from, message); |
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lastSentTime.put(from.id(), System.currentTimeMillis()); |
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} |
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/** |
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* Check for flood timer |
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* |
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* @param sender The message sender |
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* |
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* @return true if can sent the message |
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*/ |
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private boolean checkFlood(GamePlayer sender) { |
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1 |
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if (configuration.floodTime() < 0) { |
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return true; |
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} |
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if (!lastSentTime.containsKey(sender.id())) { |
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return true; |
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} |
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final int remainingTime = (int) ((lastSentTime.get(sender.id()) + configuration.floodTime() * 1000 - System.currentTimeMillis()) / 1000); |
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if (remainingTime <= 0) { |
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return true; |
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} |
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sender.send(Information.chatFlood(remainingTime)); |
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return false; |
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} |
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} |
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Arakne /
Araknemu
