97 lines
3.8 KiB
Java
97 lines
3.8 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2024 ViaVersion and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.viaversion.viaversion.bukkit.handlers;
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import com.viaversion.viaversion.api.connection.UserConnection;
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import com.viaversion.viaversion.bukkit.platform.PaperViaInjector;
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import com.viaversion.viaversion.connection.UserConnectionImpl;
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import com.viaversion.viaversion.platform.WrappedChannelInitializer;
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import com.viaversion.viaversion.protocol.ProtocolPipelineImpl;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.ChannelPipeline;
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import java.lang.reflect.Method;
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import org.checkerframework.checker.nullness.qual.Nullable;
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public final class BukkitChannelInitializer extends ChannelInitializer<Channel> implements WrappedChannelInitializer {
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public static final String VIA_ENCODER = "via-encoder";
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public static final String VIA_DECODER = "via-decoder";
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public static final String MINECRAFT_ENCODER = "encoder";
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public static final String MINECRAFT_DECODER = "decoder";
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public static final String MINECRAFT_COMPRESSOR = "compress";
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public static final String MINECRAFT_DECOMPRESSOR = "decompress";
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public static final Object COMPRESSION_ENABLED_EVENT = paperCompressionEnabledEvent();
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private static final Method INIT_CHANNEL_METHOD;
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private final ChannelInitializer<Channel> original;
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static {
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try {
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INIT_CHANNEL_METHOD = ChannelInitializer.class.getDeclaredMethod("initChannel", Channel.class);
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INIT_CHANNEL_METHOD.setAccessible(true);
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} catch (final ReflectiveOperationException e) {
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throw new RuntimeException(e);
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}
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}
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private static @Nullable Object paperCompressionEnabledEvent() {
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try {
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final Class<?> eventClass = Class.forName("io.papermc.paper.network.ConnectionEvent");
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return eventClass.getDeclaredField("COMPRESSION_THRESHOLD_SET").get(null);
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} catch (final ReflectiveOperationException e) {
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return null;
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}
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}
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public BukkitChannelInitializer(ChannelInitializer<Channel> oldInit) {
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this.original = oldInit;
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}
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@Deprecated/*(forRemoval = true)*/
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public ChannelInitializer<Channel> getOriginal() {
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return original;
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}
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@Override
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protected void initChannel(Channel channel) throws Exception {
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// Add originals
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INIT_CHANNEL_METHOD.invoke(this.original, channel);
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afterChannelInitialize(channel);
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}
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public static void afterChannelInitialize(Channel channel) {
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final UserConnection connection = new UserConnectionImpl(channel);
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new ProtocolPipelineImpl(connection);
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if (PaperViaInjector.PAPER_PACKET_LIMITER) {
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connection.setPacketLimiterEnabled(false);
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}
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// Add our transformers
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final ChannelPipeline pipeline = channel.pipeline();
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pipeline.addBefore(MINECRAFT_ENCODER, VIA_ENCODER, new BukkitEncodeHandler(connection));
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pipeline.addBefore(MINECRAFT_DECODER, VIA_DECODER, new BukkitDecodeHandler(connection));
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}
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@Override
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public ChannelInitializer<Channel> original() {
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return original;
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}
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}
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