mirror of https://github.com/GeyserMC/Geyser.git
89 lines
3.7 KiB
Java
89 lines
3.7 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.platform.spigot;
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import com.mojang.authlib.GameProfile;
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import io.netty.channel.ChannelHandler;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelInboundHandlerAdapter;
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import org.geysermc.api.connection.Connection;
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import org.geysermc.floodgate.spigot.util.ClassNames;
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import org.geysermc.geyser.floodgate.IntegratedFloodgateProvider;
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import javax.annotation.Nonnull;
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import static org.geysermc.floodgate.core.util.ReflectionUtils.setValue;
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@ChannelHandler.Sharable
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public final class SpigotHybridChannelHandler extends ChannelInboundHandlerAdapter {
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@Override
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public void channelRead(@Nonnull ChannelHandlerContext ctx, @Nonnull Object packet) throws Exception {
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Connection session = ctx.channel().attr(IntegratedFloodgateProvider.SESSION_KEY).get();
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// TODO generify this code within Floodgate
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if (ClassNames.LOGIN_START_PACKET.isInstance(packet)) {
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Object networkManager = ctx.channel().pipeline().get("packet_handler");
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Object packetListener = ClassNames.PACKET_LISTENER.get(networkManager);
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setValue(networkManager, "spoofedUUID", session.javaUuid());
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// check if the server is actually in the Login state
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if (!ClassNames.LOGIN_LISTENER.isInstance(packetListener)) {
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// player is not in the login state, abort
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// I would've liked to close the channel for security reasons, but our big friend
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// ProtocolSupport, who likes to break things, doesn't work otherwise
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ctx.pipeline().remove(this);
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return;
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}
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// set the player his GameProfile, we can't change the username without this
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GameProfile gameProfile = new GameProfile(
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// TODO testing only
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session.javaUuid(), session.javaUsername()
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);
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setValue(packetListener, ClassNames.LOGIN_PROFILE, gameProfile);
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// we have to fake the offline player (login) cycle
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// just like on Spigot:
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// LoginListener#initUUID
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// new LoginHandler().fireEvents();
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// and the tick of LoginListener will do the rest
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ClassNames.INIT_UUID.invoke(packetListener);
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Object loginHandler = ClassNames.LOGIN_HANDLER_CONSTRUCTOR.newInstance(packetListener);
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ClassNames.FIRE_LOGIN_EVENTS.invoke(loginHandler);
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ctx.pipeline().remove(this);
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return;
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}
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ctx.fireChannelRead(packet);
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}
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}
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