Paper/CraftBukkit-Patches/0068-BungeeCord-Support.patch

From 969ea97d8abf9fb99e0a647371546068db211211 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sun, 1 Dec 2013 18:18:41 +1100
Subject: [PATCH] BungeeCord Support

Provides support for IP forwarding via BungeeCord.

diff --git a/src/main/java/net/minecraft/server/HandshakeListener.java b/src/main/java/net/minecraft/server/HandshakeListener.java
index b98079c..ee24038 100644
--- a/src/main/java/net/minecraft/server/HandshakeListener.java
+++ b/src/main/java/net/minecraft/server/HandshakeListener.java
@@ -1,14 +1,17 @@
 package net.minecraft.server;
 
+import net.minecraft.util.com.mojang.authlib.properties.Property; // Spigot
 import net.minecraft.util.io.netty.util.concurrent.GenericFutureListener;
 
 // CraftBukkit start
 import java.net.InetAddress;
 import java.util.HashMap;
+import net.minecraft.util.com.mojang.util.UUIDTypeAdapter;
 // CraftBukkit end
 
 public class HandshakeListener implements PacketHandshakingInListener {
 
+    private static final com.google.gson.Gson gson = new com.google.gson.Gson(); // Spigot
     // CraftBukkit start - add fields
     private static final HashMap<InetAddress, Long> throttleTracker = new HashMap<InetAddress, Long>();
     private static int throttleCounter = 0;
@@ -73,6 +76,26 @@ public class HandshakeListener implements PacketHandshakingInListener {
                 this.b.close(chatcomponenttext);
             } else {
                 this.b.a((PacketListener) (new LoginListener(this.a, this.b)));
+                // Spigot Start
+                if (org.spigotmc.SpigotConfig.bungee) {
+                    String[] split = packethandshakinginsetprotocol.b.split("\00");
+                    if ( split.length == 3 || split.length == 4 ) {
+                        packethandshakinginsetprotocol.b = split[0];
+                        b.n = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) b.getSocketAddress()).getPort());
+                        b.spoofedUUID = UUIDTypeAdapter.fromString( split[2] );
+                    } else
+                    {
+                        chatcomponenttext = new ChatComponentText("If you wish to use IP forwarding, please enable it in your BungeeCord config as well!");
+                        this.b.handle(new PacketLoginOutDisconnect(chatcomponenttext), new GenericFutureListener[0]);
+                        this.b.close(chatcomponenttext);
+                        return;
+                    }
+                    if ( split.length == 4 )
+                    {
+                        b.spoofedProfile = gson.fromJson(split[3], Property[].class);
+                    }
+                }
+                // Spigot End
                 ((LoginListener) this.b.getPacketListener()).hostname = packethandshakinginsetprotocol.b + ":" + packethandshakinginsetprotocol.c; // CraftBukkit - set hostname
             }
             break;
diff --git a/src/main/java/net/minecraft/server/LoginListener.java b/src/main/java/net/minecraft/server/LoginListener.java
index 0755d36..e380a70 100644
--- a/src/main/java/net/minecraft/server/LoginListener.java
+++ b/src/main/java/net/minecraft/server/LoginListener.java
@@ -9,6 +9,7 @@ import javax.crypto.SecretKey;
 
 import net.minecraft.util.com.google.common.base.Charsets;
 import net.minecraft.util.com.mojang.authlib.GameProfile;
+import net.minecraft.util.com.mojang.authlib.properties.Property;
 import net.minecraft.util.io.netty.util.concurrent.GenericFutureListener;
 import net.minecraft.util.org.apache.commons.lang3.Validate;
 import org.apache.logging.log4j.LogManager;
@@ -62,9 +63,24 @@ public class LoginListener implements PacketLoginInListener {
     // Spigot start
     public void initUUID()
     {
-        UUID uuid = UUID.nameUUIDFromBytes( ( "OfflinePlayer:" + this.i.getName() ).getBytes( Charsets.UTF_8 ) );
+        UUID uuid;
+        if ( networkManager.spoofedUUID != null )
+        {
+            uuid = networkManager.spoofedUUID;
+        } else
+        {
+            uuid = UUID.nameUUIDFromBytes( ( "OfflinePlayer:" + this.i.getName() ).getBytes( Charsets.UTF_8 ) );
+        }
 
         this.i = new GameProfile( uuid, this.i.getName() );
+
+        if (networkManager.spoofedProfile != null)
+        {
+            for ( Property property : networkManager.spoofedProfile )
+            {
+                this.i.getProperties().put( property.getName(), property );
+            }
+        }
     }
     // Spigot end
 
diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
index 1dd2227..e8e20fd 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -6,6 +6,7 @@ import javax.crypto.SecretKey;
 
 import net.minecraft.util.com.google.common.collect.Queues;
 import net.minecraft.util.com.google.common.util.concurrent.ThreadFactoryBuilder;
+import net.minecraft.util.com.mojang.authlib.properties.Property;
 import net.minecraft.util.io.netty.channel.Channel;
 import net.minecraft.util.io.netty.channel.ChannelFutureListener;
 import net.minecraft.util.io.netty.channel.ChannelHandlerContext;
@@ -36,7 +37,11 @@ public class NetworkManager extends SimpleChannelInboundHandler {
     private final Queue k = Queues.newConcurrentLinkedQueue();
     private final Queue l = Queues.newConcurrentLinkedQueue();
     private Channel m;
-    private SocketAddress n;
+    // Spigot Start
+    public SocketAddress n;
+    public java.util.UUID spoofedUUID;
+    public Property[] spoofedProfile;
+    // Spigot End
     private PacketListener o;
     private EnumProtocol p;
     private IChatBaseComponent q;
@@ -198,4 +203,11 @@ public class NetworkManager extends SimpleChannelInboundHandler {
     static Channel a(NetworkManager networkmanager) {
         return networkmanager.m;
     }
+
+    // Spigot Start
+    public SocketAddress getRawAddress()
+    {
+        return this.m.remoteAddress();
+    }
+    // Spigot End
 }
diff --git a/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java b/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
index 16d4765..39692ee 100644
--- a/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
+++ b/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
@@ -13,7 +13,7 @@ public class PacketHandshakingInSetProtocol extends Packet {
 
     public void a(PacketDataSerializer packetdataserializer) throws IOException { // CraftBukkit - added throws
         this.a = packetdataserializer.a();
-        this.b = packetdataserializer.c(255);
+        this.b = packetdataserializer.c(Short.MAX_VALUE); // Spigot
         this.c = packetdataserializer.readUnsignedShort();
         this.d = EnumProtocol.a(packetdataserializer.a());
     }
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 9c98a62..d2a378e 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -350,7 +350,7 @@ public abstract class PlayerList {
 
         EntityPlayer entity = new EntityPlayer(this.server, this.server.getWorldServer(0), gameprofile, new PlayerInteractManager(this.server.getWorldServer(0)));
         Player player = entity.getBukkitEntity();
-        PlayerLoginEvent event = new PlayerLoginEvent(player, hostname, ((java.net.InetSocketAddress) socketaddress).getAddress());
+        PlayerLoginEvent event = new PlayerLoginEvent(player, hostname, ((java.net.InetSocketAddress) socketaddress).getAddress(), ((java.net.InetSocketAddress) loginlistener.networkManager.getRawAddress()).getAddress());
         String s;
 
         if (this.j.isBanned(gameprofile)) {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index d7934b4..cb858a0 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1299,6 +1299,12 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     {
 
         @Override
+        public InetSocketAddress getRawAddress()
+        {
+            return (InetSocketAddress) getHandle().playerConnection.networkManager.getRawAddress();
+        }
+
+        @Override
         public boolean getCollidesWithEntities()
         {
             return getHandle().collidesWithEntities;
diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
index 2b499fe..8bfffa5 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -192,4 +192,14 @@ public class SpigotConfig
         commands.put( "restart", new RestartCommand( "restart" ) );
         WatchdogThread.doStart( timeoutTime, restartOnCrash );
     }
+
+    public static boolean bungee;
+    private static void bungee() {
+        if ( version < 4 )
+        {
+            set( "settings.bungeecord", false );
+            System.out.println( "Oudated config, disabling BungeeCord support!" );
+        }
+        bungee = getBoolean( "settings.bungeecord", false );
+    }
 }
-- 
1.8.3.2