mirror of https://github.com/GeyserMC/Geyser.git
91 lines
3.4 KiB
Java
91 lines
3.4 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.ChannelFuture;
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import lombok.Getter;
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import org.geysermc.geyser.GeyserBootstrap;
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import java.net.SocketAddress;
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/**
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* Used to inject Geyser clients directly into the server, bypassing the need to implement a complete TCP connection,
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* by creating a local channel.
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*/
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public abstract class GeyserInjector {
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/**
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* The local channel we can use to inject ourselves into the server without creating a TCP connection.
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*/
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protected ChannelFuture localChannel;
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/**
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* The LocalAddress to use to connect to the server without connecting over TCP.
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*/
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@Getter
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protected SocketAddress serverSocketAddress;
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/**
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* @param bootstrap the bootstrap of the Geyser instance.
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*/
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public void initializeLocalChannel(GeyserBootstrap bootstrap) {
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if (!bootstrap.getGeyserConfig().isUseDirectConnection()) {
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bootstrap.getGeyserLogger().debug("Disabling direct injection!");
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return;
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}
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if (this.localChannel != null) {
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bootstrap.getGeyserLogger().warning("Geyser attempted to inject into the server connection handler twice! Please ensure you aren't using /reload or any plugin that (re)loads Geyser after the server has started.");
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return;
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}
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try {
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initializeLocalChannel0(bootstrap);
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bootstrap.getGeyserLogger().debug("Local injection succeeded!");
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} catch (Exception e) {
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e.printStackTrace();
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// If the injector partially worked, undo it
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shutdown();
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}
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}
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/**
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* The method to implement that is called by {@link #initializeLocalChannel(GeyserBootstrap)} wrapped around a try/catch.
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*/
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protected abstract void initializeLocalChannel0(GeyserBootstrap bootstrap) throws Exception;
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public void shutdown() {
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if (localChannel != null && localChannel.channel().isOpen()) {
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try {
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localChannel.channel().close().sync();
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localChannel = null;
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} catch (Exception e) {
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e.printStackTrace();
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}
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} else if (localChannel != null) {
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localChannel = null;
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}
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}
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}
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