Paper/CraftBukkit-Patches/0056-BungeeCord-Support.patch

From be18153c2049202699a2659ed4891f40ede9f117 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 e036bc6..c9a7839 100644
--- a/src/main/java/net/minecraft/server/HandshakeListener.java
+++ b/src/main/java/net/minecraft/server/HandshakeListener.java
@@ -6,7 +6,8 @@ import java.util.HashMap;
 // 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;
@@ -71,6 +72,26 @@ 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.j = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) b.getSocketAddress()).getPort());
+                        b.spoofedUUID = com.mojang.util.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));
+                        this.b.close(chatcomponenttext);
+                        return;
+                    }
+                    if ( split.length == 4 )
+                    {
+                        b.spoofedProfile = gson.fromJson(split[3], com.mojang.authlib.properties.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 a59ea80..df651d5 100644
--- a/src/main/java/net/minecraft/server/LoginListener.java
+++ b/src/main/java/net/minecraft/server/LoginListener.java
@@ -63,9 +63,24 @@ public class LoginListener implements PacketLoginInListener, IUpdatePlayerListBo
     // 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 ( 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 33166a3..78d5949 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -31,7 +31,11 @@ public class NetworkManager extends SimpleChannelInboundHandler {
     private final EnumProtocolDirection g;
     private final Queue h = Queues.newConcurrentLinkedQueue();
     private Channel i;
-    private SocketAddress j;
+    // Spigot Start
+    public SocketAddress j;
+    public java.util.UUID spoofedUUID;
+    public com.mojang.authlib.properties.Property[] spoofedProfile;
+    // Spigot End
     private PacketListener k;
     private IChatBaseComponent l;
     private boolean m;
@@ -239,4 +243,11 @@ public class NetworkManager extends SimpleChannelInboundHandler {
     static Channel a(NetworkManager networkmanager) {
         return networkmanager.i;
     }
+
+    // Spigot Start
+    public SocketAddress getRawAddress()
+    {
+        return this.i.remoteAddress();
+    }
+    // Spigot End
 }
diff --git a/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java b/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
index 97920b0..0b86011 100644
--- a/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
+++ b/src/main/java/net/minecraft/server/PacketHandshakingInSetProtocol.java
@@ -11,7 +11,7 @@ public class PacketHandshakingInSetProtocol implements Packet {
 
     public void a(PacketDataSerializer packetdataserializer) {
         this.a = packetdataserializer.e();
-        this.b = packetdataserializer.c(255);
+        this.b = packetdataserializer.c(Short.MAX_VALUE); // Spigot
         this.c = packetdataserializer.readUnsignedShort();
         this.d = EnumProtocol.a(packetdataserializer.e());
     }
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index fe4121f..1d3d00f 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -342,7 +342,7 @@ public abstract class PlayerList {
 
         EntityPlayer entity = new EntityPlayer(server, server.getWorldServer(0), gameprofile, new PlayerInteractManager(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 (getProfileBans().isBanned(gameprofile) && !getProfileBans().get(gameprofile).hasExpired()) {
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 0741d7b..69fa301 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -559,7 +559,13 @@ 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 494c0bc..37b8287 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1316,6 +1316,12 @@ 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 c071421..47ab82f 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -210,4 +210,14 @@ 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 );
+    }
 }
-- 
2.1.0