Paper/patches/server/0786-Add-support-for-Proxy-Protocol.patch

66 lines
4.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: PanSzelescik <panszelescik@gmail.com>
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 ff1636d3e047e124c73496f4942e991abe01c150..376e8983fdfdbb6c3e5fd8ad0f6a05e655b622bf 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:4.1.97.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-commons: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 f7d5af5e6a39469914bd9c496582929c9b8e0300..2cdb427eb7d88778ef4b6831336814cdc45e5ef9 100644
--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
@@ -111,6 +111,12 @@ public class ServerConnectionListener {
ServerConnectionListener.LOGGER.info("Paper: Using " + com.velocitypowered.natives.util.Natives.cipher.getLoadedVariant() + " cipher from Velocity.");
// Paper end - Use Velocity cipher
+ // Paper start - Add support for proxy protocol
+ if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.proxyProtocol) {
+ ServerConnectionListener.LOGGER.info("Paper: Using Proxy Protocol");
+ }
+ // Paper end - Add support for proxy protocol
+
this.channels.add(((ServerBootstrap) ((ServerBootstrap) (new ServerBootstrap()).channel(oclass)).childHandler(new ChannelInitializer<Channel>() {
protected void initChannel(Channel channel) {
Connection.setInitialProtocolAttributes(channel);
@@ -129,6 +135,29 @@ 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 - Add support for proxy protocol
pending.add(object); // Paper
((Connection) object).configurePacketHandler(channelpipeline);
((Connection) object).setListenerForServerboundHandshake(new ServerHandshakePacketListenerImpl(ServerConnectionListener.this.server, (Connection) object));