mirror of https://github.com/GeyserMC/Geyser.git
59 lines
2.8 KiB
Java
59 lines
2.8 KiB
Java
/*
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* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.geyser.network.netty;
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import io.netty.channel.local.LocalChannel;
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import io.netty.channel.local.LocalServerChannel;
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import io.netty.util.Attribute;
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import org.geysermc.api.connection.Connection;
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import org.geysermc.geyser.GeyserImpl;
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import org.geysermc.geyser.floodgate.IntegratedFloodgateProvider;
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/**
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* If the incoming channel if an instance of LocalChannelWithRemoteAddress, this server creates a LocalChannelWrapper
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* for the other end and attaches the spoofed remote address
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*/
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public class LocalServerChannelWrapper extends LocalServerChannel {
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@Override
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protected LocalChannel newLocalChannel(LocalChannel peer) {
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// LocalChannel here should be an instance of LocalChannelWithRemoteAddress, which we can use to set the "remote address" on the other end
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if (peer instanceof LocalChannelWithRemoteAddress) { // TODO also use attribute for this
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LocalChannelWrapper channel = new LocalChannelWrapper(this, peer);
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channel.wrapper().remoteAddress(((LocalChannelWithRemoteAddress) peer).spoofedRemoteAddress());
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if (GeyserImpl.getInstance().getFloodgateProvider() instanceof IntegratedFloodgateProvider) {
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Attribute<Connection> attribute = peer.attr(IntegratedFloodgateProvider.SESSION_KEY);
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Connection session = attribute.get();
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// Garbage collect since it's no longer relevant for the PacketLib side.
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attribute.set(null);
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channel.attr(IntegratedFloodgateProvider.SESSION_KEY).set(session);
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}
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return channel;
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}
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return super.newLocalChannel(peer);
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}
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}
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