Paper/CraftBukkit-Patches/0067-BungeeCord-Support.patch

From 7a40301085d45e555e5d980b663a03fc7215870e 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..0542db3 100644
--- a/src/main/java/net/minecraft/server/HandshakeListener.java
+++ b/src/main/java/net/minecraft/server/HandshakeListener.java
@@ -73,6 +73,22 @@ 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 ) {
+                        packethandshakinginsetprotocol.b = split[0];
+                        b.n = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) b.getSocketAddress()).getPort());
+                        b.spoofedUUID = 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;
+                    }
+                }
+                // 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 eb227bc..04d9f73 100644
--- a/src/main/java/net/minecraft/server/LoginListener.java
+++ b/src/main/java/net/minecraft/server/LoginListener.java
@@ -62,8 +62,14 @@ public class LoginListener implements PacketLoginInListener {
     // Spigot start
     public void initUUID()
     {
-        String uuid = UUID.nameUUIDFromBytes( ( "OfflinePlayer:" + this.i.getName() ).getBytes( Charsets.UTF_8 ) ).toString().replaceAll( "-", "" );
-
+        String uuid;
+        if ( networkManager.spoofedUUID != null )
+        {
+            uuid = networkManager.spoofedUUID;
+        } else
+        {
+            uuid = UUID.nameUUIDFromBytes( ( "OfflinePlayer:" + this.i.getName() ).getBytes( Charsets.UTF_8 ) ).toString().replaceAll("-", "");
+        }
         this.i = new GameProfile( uuid, this.i.getName() );
     }
     // Spigot end
diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
index 1dd2227..c4a86bf 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -36,7 +36,8 @@ public class NetworkManager extends SimpleChannelInboundHandler {
     private final Queue k = Queues.newConcurrentLinkedQueue();
     private final Queue l = Queues.newConcurrentLinkedQueue();
     private Channel m;
-    private SocketAddress n;
+    public SocketAddress n; // Spigot
+    public String spoofedUUID; // Spigot
     private PacketListener o;
     private EnumProtocol p;
     private IChatBaseComponent q;
@@ -198,4 +199,11 @@ 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/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 217d5dd..7655b65 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