From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: PanSzelescik Date: Thu, 7 Apr 2022 16:13:39 +0200 Subject: [PATCH] Add support for Proxy Protocol diff --git a/build.gradle.kts b/build.gradle.kts index 7df1b44674ba5e826ad7c96c9d242865a3282307..26618ddf85952694ae2c78f41a19e4b9a324f059 100644 --- a/build.gradle.kts +++ b/build.gradle.kts @@ -30,6 +30,7 @@ dependencies { log4jPlugins.annotationProcessorConfigurationName("org.apache.logging.log4j:log4j-core:2.19.0") // Paper - Needed to generate meta for our Log4j plugins runtimeOnly(log4jPlugins.output) alsoShade(log4jPlugins.output) + implementation("io.netty:netty-codec-haproxy:4.1.87.Final") // Paper - Add support for proxy protocol // Paper end implementation("org.apache.logging.log4j:log4j-iostreams:2.19.0") // Paper - remove exclusion implementation("org.ow2.asm:asm:9.5") diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java index dbefe5450b9d8d9c32c30a06afd614725f890d00..12bdcbd265d24a0c013303246d33545c22b01595 100644 --- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java +++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java @@ -109,6 +109,12 @@ public class ServerConnectionListener { ServerConnectionListener.LOGGER.info("Paper: Using " + com.velocitypowered.natives.util.Natives.cipher.getLoadedVariant() + " cipher from Velocity."); // Paper end + // Paper start - indicate Proxy Protocol usage + if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.proxyProtocol) { + ServerConnectionListener.LOGGER.info("Paper: Using Proxy Protocol"); + } + // Paper end + this.channels.add(((ServerBootstrap) ((ServerBootstrap) (new ServerBootstrap()).channel(oclass)).childHandler(new ChannelInitializer() { protected void initChannel(Channel channel) { Connection.setInitialProtocolAttributes(channel); @@ -126,6 +132,29 @@ public class ServerConnectionListener { Connection object = j > 0 ? new RateKickingConnection(j) : new Connection(PacketFlow.SERVERBOUND); // CraftBukkit - decompile error //ServerConnectionListener.this.connections.add(object); // Paper + // Paper start - Add support for Proxy Protocol + if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.proxyProtocol) { + channel.pipeline().addAfter("timeout", "haproxy-decoder", new io.netty.handler.codec.haproxy.HAProxyMessageDecoder()); + channel.pipeline().addAfter("haproxy-decoder", "haproxy-handler", new ChannelInboundHandlerAdapter() { + @Override + public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { + if (msg instanceof io.netty.handler.codec.haproxy.HAProxyMessage message) { + if (message.command() == io.netty.handler.codec.haproxy.HAProxyCommand.PROXY) { + String realaddress = message.sourceAddress(); + int realport = message.sourcePort(); + + SocketAddress socketaddr = new java.net.InetSocketAddress(realaddress, realport); + + Connection connection = (Connection) channel.pipeline().get("packet_handler"); + connection.address = socketaddr; + } + } else { + super.channelRead(ctx, msg); + } + } + }); + } + // Paper end pending.add(object); // Paper ((Connection) object).configurePacketHandler(channelpipeline); ((Connection) object).setListenerForServerboundHandshake(new ServerHandshakePacketListenerImpl(ServerConnectionListener.this.server, (Connection) object));