83 lines
3.7 KiB
Java
83 lines
3.7 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.platform;
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import com.viaversion.viaversion.bukkit.handlers.BukkitChannelInitializer;
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import io.netty.channel.Channel;
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import java.lang.reflect.Method;
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import java.lang.reflect.Proxy;
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import net.kyori.adventure.key.Key;
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public final class PaperViaInjector {
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public static final boolean PAPER_INJECTION_METHOD = hasPaperInjectionMethod();
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public static final boolean PAPER_PROTOCOL_METHOD = hasServerProtocolMethod();
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public static final boolean PAPER_PACKET_LIMITER = hasPacketLimiter();
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private PaperViaInjector() {
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}
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public static void setPaperChannelInitializeListener() throws ReflectiveOperationException {
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// Call io.papermc.paper.network.ChannelInitializeListenerHolder.addListener(net.kyori.adventure.key.Key, io.papermc.paper.network.ChannelInitializeListener)
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// Create an interface proxy of ChannelInitializeListener
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Class<?> listenerClass = Class.forName("io.papermc.paper.network.ChannelInitializeListener");
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Object channelInitializeListener = Proxy.newProxyInstance(BukkitViaInjector.class.getClassLoader(), new Class[]{listenerClass}, (proxy, method, args) -> {
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if (method.getName().equals("afterInitChannel")) {
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BukkitChannelInitializer.afterChannelInitialize((Channel) args[0]);
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return null;
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}
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return method.invoke(proxy, args);
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});
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Class<?> holderClass = Class.forName("io.papermc.paper.network.ChannelInitializeListenerHolder");
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Method addListenerMethod = holderClass.getDeclaredMethod("addListener", Key.class, listenerClass);
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addListenerMethod.invoke(null, Key.key("viaversion", "injector"), channelInitializeListener);
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}
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public static void removePaperChannelInitializeListener() throws ReflectiveOperationException {
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Class<?> holderClass = Class.forName("io.papermc.paper.network.ChannelInitializeListenerHolder");
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Method addListenerMethod = holderClass.getDeclaredMethod("removeListener", Key.class);
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addListenerMethod.invoke(null, Key.key("viaversion", "injector"));
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}
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private static boolean hasServerProtocolMethod() {
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try {
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Class.forName("org.bukkit.UnsafeValues").getDeclaredMethod("getProtocolVersion");
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return true;
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} catch (final ClassNotFoundException | NoSuchMethodException e) {
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return false;
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}
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}
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private static boolean hasPaperInjectionMethod() {
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return hasClass("io.papermc.paper.network.ChannelInitializeListener");
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}
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private static boolean hasPacketLimiter() {
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return hasClass("com.destroystokyo.paper.PaperConfig$PacketLimit") || hasClass("io.papermc.paper.configuration.GlobalConfiguration$PacketLimiter");
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}
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public static boolean hasClass(final String className) {
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try {
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Class.forName(className);
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return true;
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} catch (final ClassNotFoundException e) {
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return false;
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}
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}
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}
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