Paper/CraftBukkit-Patches/0031-BungeeCord-Support.patch

From f5c60523ba201c375800710ab1af7a02d47297c8 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sat, 23 Mar 2013 11:15:11 +1100
Subject: [PATCH] BungeeCord Support

- Allows BungeeCord to set the players real IP address very early in the login process, so that the BungeeCord proxy IP is never even seen by a plugin.

diff --git a/src/main/java/net/minecraft/server/PendingConnection.java b/src/main/java/net/minecraft/server/PendingConnection.java
index 836ad94..72fb172 100644
--- a/src/main/java/net/minecraft/server/PendingConnection.java
+++ b/src/main/java/net/minecraft/server/PendingConnection.java
@@ -221,4 +221,17 @@ public class PendingConnection extends Connection {
     static boolean a(PendingConnection pendingconnection, boolean flag) {
         return pendingconnection.h = flag;
     }
+
+    // Spigot start
+    @Override
+    public void a(Packet250CustomPayload pcp) {
+        if (pcp.tag.equals("BungeeCord") && org.bukkit.craftbukkit.Spigot.bungeeIPs.contains(getSocket().getInetAddress().getHostAddress())) {
+            com.google.common.io.ByteArrayDataInput in = com.google.common.io.ByteStreams.newDataInput(pcp.data);
+            String subTag = in.readUTF();
+            if (subTag.equals("Login")) {
+                networkManager.setSocketAddress(new java.net.InetSocketAddress(in.readUTF(), in.readInt()));
+            }
+        }
+    }
+    // Spigot end
 }
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index eaeb0bf..6a09a9a 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -291,7 +291,7 @@ public abstract class PlayerList {
         // depending on the outcome.
         EntityPlayer entity = new EntityPlayer(this.server, this.server.getWorldServer(0), s, this.server.M() ? new DemoPlayerInteractManager(this.server.getWorldServer(0)) : new PlayerInteractManager(this.server.getWorldServer(0)));
         Player player = entity.getBukkitEntity();
-        PlayerLoginEvent event = new PlayerLoginEvent(player, hostname, pendingconnection.getSocket().getInetAddress());
+        PlayerLoginEvent event = new PlayerLoginEvent(player, hostname, ((java.net.InetSocketAddress) pendingconnection.networkManager.getSocketAddress()).getAddress()); // Spigot
 
         SocketAddress socketaddress = pendingconnection.networkManager.getSocketAddress();
 
diff --git a/src/main/java/net/minecraft/server/ThreadLoginVerifier.java b/src/main/java/net/minecraft/server/ThreadLoginVerifier.java
index 9ed3db5..c6d1253 100644
--- a/src/main/java/net/minecraft/server/ThreadLoginVerifier.java
+++ b/src/main/java/net/minecraft/server/ThreadLoginVerifier.java
@@ -45,11 +45,11 @@ class ThreadLoginVerifier extends Thread {
                 return;
             }
 
-            AsyncPlayerPreLoginEvent asyncEvent = new AsyncPlayerPreLoginEvent(PendingConnection.d(this.pendingConnection), this.pendingConnection.getSocket().getInetAddress());
+            AsyncPlayerPreLoginEvent asyncEvent = new AsyncPlayerPreLoginEvent(PendingConnection.d(this.pendingConnection), ((java.net.InetSocketAddress) this.pendingConnection.networkManager.getSocketAddress()).getAddress()); // Spigot
             this.server.getPluginManager().callEvent(asyncEvent);
 
             if (PlayerPreLoginEvent.getHandlerList().getRegisteredListeners().length != 0) {
-                final PlayerPreLoginEvent event = new PlayerPreLoginEvent(PendingConnection.d(this.pendingConnection), this.pendingConnection.getSocket().getInetAddress());
+                final PlayerPreLoginEvent event = new PlayerPreLoginEvent(PendingConnection.d(this.pendingConnection), ((java.net.InetSocketAddress) this.pendingConnection.networkManager.getSocketAddress()).getAddress()); // Spigot
                 if (asyncEvent.getResult() != PlayerPreLoginEvent.Result.ALLOWED) {
                     event.disallow(asyncEvent.getResult(), asyncEvent.getKickMessage());
                 }
diff --git a/src/main/java/org/bukkit/craftbukkit/Spigot.java b/src/main/java/org/bukkit/craftbukkit/Spigot.java
index 1117309..015976b 100644
--- a/src/main/java/org/bukkit/craftbukkit/Spigot.java
+++ b/src/main/java/org/bukkit/craftbukkit/Spigot.java
@@ -54,6 +54,7 @@ public class Spigot {
     private static boolean filterIps;
     public static boolean tabPing = false;
     private static Metrics metrics;
+    public static List<String> bungeeIPs;
 
     public static void initialize(CraftServer server, SimpleCommandMap commandMap, YamlConfiguration configuration) {
         commandMap.register("bukkit", new org.bukkit.craftbukkit.command.TicksPerSecondCommand("tps"));
@@ -91,6 +92,7 @@ public class Spigot {
         }
 
         tabPing = configuration.getBoolean("settings.tab-ping", tabPing);
+        bungeeIPs = configuration.getStringList("settings.bungee-proxies");
 
         if (metrics == null) {
             try {
diff --git a/src/main/resources/configurations/bukkit.yml b/src/main/resources/configurations/bukkit.yml
index eb23dae..62bf79a 100644
--- a/src/main/resources/configurations/bukkit.yml
+++ b/src/main/resources/configurations/bukkit.yml
@@ -37,6 +37,8 @@ settings:
     timeout-time: 30
     restart-on-crash: false
     restart-script-location: /path/to/server/start.sh
+    bungee-proxies:
+      - 127.0.0.1
 world-settings:
     default:
         growth-chunks-per-tick: 650
-- 
1.8.2.1