96 lines
4.6 KiB
Java
96 lines
4.6 KiB
Java
/*
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* This file is part of ViaProxy - https://github.com/RaphiMC/ViaProxy
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* Copyright (C) 2021-2024 RK_01/RaphiMC 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 net.raphimc.viaproxy.proxy.session;
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import io.netty.bootstrap.Bootstrap;
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import io.netty.channel.*;
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import io.netty.channel.socket.DatagramChannel;
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import net.lenni0451.reflect.stream.RStream;
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import net.raphimc.netminecraft.constants.ConnectionState;
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import net.raphimc.netminecraft.constants.MCPipeline;
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import net.raphimc.netminecraft.util.ChannelType;
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import net.raphimc.viabedrock.protocol.data.ProtocolConstants;
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import net.raphimc.vialoader.netty.VLPipeline;
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import net.raphimc.vialoader.netty.viabedrock.PingEncapsulationCodec;
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import net.raphimc.vialoader.util.VersionEnum;
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import org.cloudburstmc.netty.channel.raknet.RakChannelFactory;
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import org.cloudburstmc.netty.channel.raknet.config.RakChannelOption;
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import java.net.InetSocketAddress;
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import java.net.SocketAddress;
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import java.util.concurrent.ThreadLocalRandom;
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import java.util.function.Function;
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import java.util.function.Supplier;
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public class BedrockProxyConnection extends ProxyConnection {
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public BedrockProxyConnection(Supplier<ChannelHandler> handlerSupplier, Function<Supplier<ChannelHandler>, ChannelInitializer<Channel>> channelInitializerSupplier, Channel c2p) {
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super(handlerSupplier, channelInitializerSupplier, c2p);
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}
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@Override
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public void initialize(final ChannelType channelType, final Bootstrap bootstrap) {
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if (!DatagramChannel.class.isAssignableFrom(channelType.udpClientChannelClass())) {
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throw new IllegalArgumentException("Channel type must be a DatagramChannel");
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}
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final Class<? extends DatagramChannel> channelClass = (Class<? extends DatagramChannel>) channelType.udpClientChannelClass();
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bootstrap
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.group(channelType.clientEventLoopGroup().get())
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.channelFactory(RakChannelFactory.client(channelClass))
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.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 4_000)
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.option(ChannelOption.IP_TOS, 0x18)
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.option(RakChannelOption.RAK_PROTOCOL_VERSION, ProtocolConstants.BEDROCK_RAKNET_PROTOCOL_VERSION)
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.option(RakChannelOption.RAK_CONNECT_TIMEOUT, 4_000L)
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.option(RakChannelOption.RAK_SESSION_TIMEOUT, 30_000L)
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.option(RakChannelOption.RAK_GUID, ThreadLocalRandom.current().nextLong())
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.attr(ProxyConnection.PROXY_CONNECTION_ATTRIBUTE_KEY, this)
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.handler(this.channelInitializerSupplier.apply(this.handlerSupplier));
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this.channelFuture = bootstrap.register().syncUninterruptibly();
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}
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@Override
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public ChannelFuture connectToServer(final SocketAddress serverAddress, final VersionEnum targetVersion) {
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if (!(serverAddress instanceof InetSocketAddress)) {
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throw new IllegalArgumentException("Server address must be an InetSocketAddress");
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}
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if (this.getC2pConnectionState() == ConnectionState.STATUS) {
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RStream.of(this).withSuper().fields().by("serverAddress").set(serverAddress);
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RStream.of(this).withSuper().fields().by("serverVersion").set(targetVersion);
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return this.ping(serverAddress);
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} else {
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return super.connectToServer(serverAddress, targetVersion);
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}
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}
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private ChannelFuture ping(final SocketAddress address) {
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if (this.channelFuture == null) this.initialize(ChannelType.get(address), new Bootstrap());
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this.channelFuture.channel().eventLoop().submit(() -> {
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this.getChannel().pipeline().replace(VLPipeline.VIABEDROCK_FRAME_ENCAPSULATION_HANDLER_NAME, "ping_encapsulation", new PingEncapsulationCodec(((InetSocketAddress) address)));
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this.getChannel().pipeline().remove(VLPipeline.VIABEDROCK_PACKET_ENCAPSULATION_HANDLER_NAME);
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this.getChannel().pipeline().remove(MCPipeline.SIZER_HANDLER_NAME);
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});
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return this.getChannel().bind(new InetSocketAddress(0));
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}
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}
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