Paper/CraftBukkit-Patches/0042-BungeeCord-Support.patch

From f081be9a6ac0b77c3776bfb3c058a65db932e80f 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.
---
 src/main/java/net/minecraft/server/PendingConnection.java | 13 +++++++++++++
 src/main/java/org/bukkit/craftbukkit/Spigot.java          |  2 ++
 src/main/resources/configurations/bukkit.yml              |  2 ++
 3 files changed, 17 insertions(+)

diff --git a/src/main/java/net/minecraft/server/PendingConnection.java b/src/main/java/net/minecraft/server/PendingConnection.java
index 58687ed..ae73a43 100644
--- a/src/main/java/net/minecraft/server/PendingConnection.java
+++ b/src/main/java/net/minecraft/server/PendingConnection.java
@@ -219,4 +219,17 @@ 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/org/bukkit/craftbukkit/Spigot.java b/src/main/java/org/bukkit/craftbukkit/Spigot.java
index 3bfd29b..bce217e 100644
--- a/src/main/java/org/bukkit/craftbukkit/Spigot.java
+++ b/src/main/java/org/bukkit/craftbukkit/Spigot.java
@@ -23,6 +23,7 @@ public class Spigot {
     static AxisAlignedBB monsterBB = AxisAlignedBB.a(0, 0, 0, 0, 0, 0);
     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"));
@@ -60,6 +61,7 @@ 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 9cfee2d..64f68a2 100644
--- a/src/main/resources/configurations/bukkit.yml
+++ b/src/main/resources/configurations/bukkit.yml
@@ -35,6 +35,8 @@ 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
-- 
1.8.1-rc2