From 3d483cab8e7200988d72276aef4f6f56ec86a615 Mon Sep 17 00:00:00 2001 From: Minecrell Date: Tue, 10 Oct 2017 18:45:20 +0200 Subject: [PATCH] Expose client protocol version and virtual host diff --git a/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java b/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java new file mode 100644 index 000000000..5caca6439 --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java @@ -0,0 +1,50 @@ +package com.destroystokyo.paper.network; + +import net.minecraft.server.NetworkManager; + +import java.net.InetSocketAddress; + +import javax.annotation.Nullable; + +public class PaperNetworkClient implements NetworkClient { + + private final NetworkManager networkManager; + + PaperNetworkClient(NetworkManager networkManager) { + this.networkManager = networkManager; + } + + @Override + public InetSocketAddress getAddress() { + return (InetSocketAddress) this.networkManager.getSocketAddress(); + } + + @Override + public int getProtocolVersion() { + return this.networkManager.protocolVersion; + } + + @Nullable + @Override + public InetSocketAddress getVirtualHost() { + return this.networkManager.virtualHost; + } + + public static InetSocketAddress prepareVirtualHost(String host, int port) { + int len = host.length(); + + // FML appends a marker to the host to recognize FML clients (\0FML\0) + int pos = host.indexOf('\0'); + if (pos >= 0) { + len = pos; + } + + // When clients connect with a SRV record, their host contains a trailing '.' + if (len > 0 && host.charAt(len - 1) == '.') { + len--; + } + + return InetSocketAddress.createUnresolved(host.substring(0, len), port); + } + +} diff --git a/src/main/java/net/minecraft/server/HandshakeListener.java b/src/main/java/net/minecraft/server/HandshakeListener.java index 309ab18df..c583ab7d9 100644 --- a/src/main/java/net/minecraft/server/HandshakeListener.java +++ b/src/main/java/net/minecraft/server/HandshakeListener.java @@ -15,6 +15,7 @@ public class HandshakeListener implements PacketHandshakingInListener { private final MinecraftServer a; private final NetworkManager b; + private NetworkManager getNetworkManager() { return b; } // Paper - OBFHELPER public HandshakeListener(MinecraftServer minecraftserver, NetworkManager networkmanager) { this.a = minecraftserver; @@ -130,6 +131,10 @@ public class HandshakeListener implements PacketHandshakingInListener { throw new UnsupportedOperationException("Invalid intention " + packethandshakinginsetprotocol.a()); } + // Paper start - NetworkClient implementation + this.getNetworkManager().protocolVersion = packethandshakinginsetprotocol.getProtocolVersion(); + this.getNetworkManager().virtualHost = com.destroystokyo.paper.network.PaperNetworkClient.prepareVirtualHost(packethandshakinginsetprotocol.hostname, packethandshakinginsetprotocol.port); + // Paper end } public void a(IChatBaseComponent ichatbasecomponent) {} diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java index 2eddb68d7..b93a26e8f 100644 --- a/src/main/java/net/minecraft/server/NetworkManager.java +++ b/src/main/java/net/minecraft/server/NetworkManager.java @@ -75,6 +75,10 @@ public class NetworkManager extends SimpleChannelInboundHandler> { private IChatBaseComponent n; private boolean o; private boolean p; + // Paper start - NetworkClient implementation + public int protocolVersion; + public java.net.InetSocketAddress virtualHost; + // Paper end public NetworkManager(EnumProtocolDirection enumprotocoldirection) { this.h = enumprotocoldirection; diff --git a/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java b/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java index aececa39d..1d4ba3b3d 100644 --- a/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java +++ b/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java @@ -33,6 +33,7 @@ public class PacketHandshakingInSetProtocol implements Packet