From df7a85b27004de321ec72b9d32a5747d6ecacc78 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 29243f3e3..756330a6c 100644
--- a/src/main/java/net/minecraft/server/HandshakeListener.java
+++ b/src/main/java/net/minecraft/server/HandshakeListener.java
@@ -7,6 +7,7 @@ import java.util.HashMap;
 
 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;
@@ -72,6 +73,26 @@ public class HandshakeListener implements PacketHandshakingInListener {
                     this.b.close(chatmessage);
                 } else {
                     this.b.setPacketListener(new LoginListener(this.a, this.b));
+                    // Spigot Start
+                    if (org.spigotmc.SpigotConfig.bungee) {
+                        String[] split = packethandshakinginsetprotocol.hostname.split("\00");
+                        if ( split.length == 3 || split.length == 4 ) {
+                            packethandshakinginsetprotocol.hostname = split[0];
+                            b.socketAddress = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) b.getSocketAddress()).getPort());
+                            b.spoofedUUID = com.mojang.util.UUIDTypeAdapter.fromString( split[2] );
+                        } else
+                        {
+                            chatmessage = new ChatMessage("If you wish to use IP forwarding, please enable it in your BungeeCord config as well!");
+                            this.b.sendPacket(new PacketLoginOutDisconnect(chatmessage));
+                            this.b.close(chatmessage);
+                            return;
+                        }
+                        if ( split.length == 4 )
+                        {
+                            b.spoofedProfile = gson.fromJson(split[3], com.mojang.authlib.properties.Property[].class);
+                        }
+                    }
+                    // Spigot End
                     ((LoginListener) this.b.i()).hostname = packethandshakinginsetprotocol.hostname + ":" + packethandshakinginsetprotocol.port; // 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 11a18196d..b85b048ac 100644
--- a/src/main/java/net/minecraft/server/LoginListener.java
+++ b/src/main/java/net/minecraft/server/LoginListener.java
@@ -95,9 +95,24 @@ public class LoginListener implements PacketLoginInListener {
     // Spigot start
     public void initUUID()
     {
-        UUID uuid = EntityHuman.getOfflineUUID( this.i.getName() );
+        UUID uuid;
+        if ( networkManager.spoofedUUID != null )
+        {
+            uuid = networkManager.spoofedUUID;
+        } else
+        {
+            uuid = EntityHuman.getOfflineUUID( this.i.getName() );
+        }
 
         this.i = new GameProfile( uuid, this.i.getName() );
+
+        if (networkManager.spoofedProfile != null)
+        {
+            for ( com.mojang.authlib.properties.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 71611ee2d..9f4b753bc 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -47,6 +47,10 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
     private final ReentrantReadWriteLock j = new ReentrantReadWriteLock();
     public Channel channel;
     public SocketAddress socketAddress;
+    // Spigot Start
+    public java.util.UUID spoofedUUID;
+    public com.mojang.authlib.properties.Property[] spoofedProfile;
+    // Spigot End
     private PacketListener packetListener;
     private IChatBaseComponent n;
     private boolean o;
@@ -333,4 +337,11 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
             this.b = genericfuturelistener;
         }
     }
+
+    // Spigot Start
+    public SocketAddress getRawAddress()
+    {
+        return this.channel.remoteAddress();
+    }
+    // Spigot End
 }
diff --git a/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java b/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
index 6aeea22ae..4f008e472 100644
--- a/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
+++ b/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
@@ -14,7 +14,7 @@ public class PacketHandshakingInSetProtocol implements Packet<PacketHandshakingI
     @Override
     public void a(PacketDataSerializer packetdataserializer) throws IOException {
         this.a = packetdataserializer.i();
-        this.hostname = packetdataserializer.e(255);
+        this.hostname = packetdataserializer.e(Short.MAX_VALUE); // Spigot
         this.port = packetdataserializer.readUnsignedShort();
         this.d = EnumProtocol.a(packetdataserializer.i());
     }
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index e55aff329..b57d408bb 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -458,7 +458,7 @@ public abstract class PlayerList {
 
         EntityPlayer entity = new EntityPlayer(this.server, this.server.getWorldServer(DimensionManager.OVERWORLD), gameprofile, new PlayerInteractManager(this.server.getWorldServer(DimensionManager.OVERWORLD)));
         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());
 
         if (getProfileBans().isBanned(gameprofile) && !getProfileBans().get(gameprofile).hasExpired()) {
             GameProfileBanEntry gameprofilebanentry = (GameProfileBanEntry) this.k.get(gameprofile);
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index d9323cedc..7e06d8579 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -623,7 +623,13 @@ public final class CraftServer implements Server {
 
     @Override
     public long getConnectionThrottle() {
-        return this.configuration.getInt("settings.connection-throttle");
+        // Spigot Start - Automatically set connection throttle for bungee configurations
+        if (org.spigotmc.SpigotConfig.bungee) {
+            return -1;
+        } else {
+            return this.configuration.getInt("settings.connection-throttle");
+        }
+        // Spigot End
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index a1e56d3c2..3a7048b6e 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1665,6 +1665,12 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     private final Player.Spigot spigot = new Player.Spigot()
     {
 
+        @Override
+        public InetSocketAddress getRawAddress()
+        {
+            return (InetSocketAddress) getHandle().playerConnection.networkManager.getRawAddress();
+        }
+
         @Override
         public boolean getCollidesWithEntities() {
             return CraftPlayer.this.isCollidable();
diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
index 37bf0cec0..642f3a39a 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -214,4 +214,14 @@ 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 );
+    }
 }
-- 
2.20.1