Yatopia/patches/server/0042-ProxyForwardDataEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Ivan Pekov <ivan@mrivanplays.com>
Date: Wed, 9 Sep 2020 16:15:22 +0300
Subject: [PATCH] ProxyForwardDataEvent


diff --git a/src/main/java/net/minecraft/server/HandshakeListener.java b/src/main/java/net/minecraft/server/HandshakeListener.java
index 5dde738b7499fbf432dc3dbae295eb96d5b90347..0fc3b46df54d40133c059d819b1a198e4e65dc23 100644
--- a/src/main/java/net/minecraft/server/HandshakeListener.java
+++ b/src/main/java/net/minecraft/server/HandshakeListener.java
@@ -92,6 +92,7 @@ public class HandshakeListener implements PacketHandshakingInListener {
                         this.getNetworkManager().socketAddress = new java.net.InetSocketAddress(event.getSocketAddressHostname(), ((java.net.InetSocketAddress) this.getNetworkManager().getSocketAddress()).getPort());
                         this.getNetworkManager().spoofedUUID = event.getUniqueId();
                         this.getNetworkManager().spoofedProfile = gson.fromJson(event.getPropertiesJson(), com.mojang.authlib.properties.Property[].class);
+                        if (proxyLogicEnabled) c.proxyProfileSpoof = true; // Yatopia
                         handledByEvent = true; // Hooray, we did it!
                     }
                 }
@@ -105,6 +106,7 @@ public class HandshakeListener implements PacketHandshakingInListener {
                             packethandshakinginsetprotocol.hostname = split[0];
                             c.socketAddress = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) c.getSocketAddress()).getPort());
                             c.spoofedUUID = com.mojang.util.UUIDTypeAdapter.fromString( split[2] );
+                            c.proxyProfileSpoof = true; // Yatopia
                         } else
                         {
                             chatmessage = new ChatMessage("If you wish to use IP forwarding, please enable it in your BungeeCord config as well!");
diff --git a/src/main/java/net/minecraft/server/LoginListener.java b/src/main/java/net/minecraft/server/LoginListener.java
index 57a3a8d09427012e5c8aba5085d187c6be047652..fa0a8a7e00a64df4d3ba09407193d984e1ff0952 100644
--- a/src/main/java/net/minecraft/server/LoginListener.java
+++ b/src/main/java/net/minecraft/server/LoginListener.java
@@ -124,6 +124,23 @@ public class LoginListener implements PacketLoginInListener {
 
         this.i = new GameProfile( uuid, this.i.getName() );
 
+        // Yatopia start - situate this around an event
+        if (networkManager.proxyProfileSpoof) {
+            java.util.List<com.mojang.authlib.properties.Property> properties;
+            if (networkManager.spoofedProfile != null) {
+                properties = new java.util.ArrayList<>(Arrays.asList(networkManager.spoofedProfile));
+            } else {
+                properties = new java.util.ArrayList<>();
+            }
+            net.yatopia.api.event.ProxyForwardDataEvent event = new net.yatopia.api.event.ProxyForwardDataEvent(
+                    !org.bukkit.Bukkit.isPrimaryThread(), uuid, i.getName(), properties
+            );
+            if (event.callEvent()) {
+                for (com.mojang.authlib.properties.Property property : event.getProperties()) {
+                    i.getProperties().put(property.getName(), property);
+                }
+            }
+        } else {
         if (networkManager.spoofedProfile != null)
         {
             for ( com.mojang.authlib.properties.Property property : networkManager.spoofedProfile )
@@ -131,6 +148,7 @@ public class LoginListener implements PacketLoginInListener {
                 this.i.getProperties().put( property.getName(), property );
             }
         }
+        } // Yatopia end
     }
     // Spigot end
 
@@ -355,11 +373,20 @@ public class LoginListener implements PacketLoginInListener {
 
             this.networkManager.socketAddress = new java.net.InetSocketAddress(com.destroystokyo.paper.proxy.VelocityProxy.readAddress(buf), ((java.net.InetSocketAddress) this.networkManager.getSocketAddress()).getPort());
 
-            this.setGameProfile(com.destroystokyo.paper.proxy.VelocityProxy.createProfile(buf));
+            // Yatopia start - how about spoofed uuid and profile
+            //this.setGameProfile(com.destroystokyo.paper.proxy.VelocityProxy.createProfile(buf));
+            com.mojang.authlib.GameProfile profile = com.destroystokyo.paper.proxy.VelocityProxy.createProfile(buf);
+            networkManager.spoofedUUID = profile.getId();
+            if (!profile.getProperties().isEmpty()) {
+                networkManager.spoofedProfile = profile.getProperties().values().toArray(new com.mojang.authlib.properties.Property[0]);
+            }
+            networkManager.proxyProfileSpoof = true;
+            // Yatopia end
 
             // Proceed with login
             authenticatorPool.execute(() -> {
                 try {
+                    initUUID(); // Yatopia
                     new LoginHandler().fireEvents();
                 } catch (Exception ex) {
                     disconnect("Failed to verify username!");
diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
index 332f8ec16f48fb158b8cd058d3115b006ba34134..57de1f541107ec3c53abb5a2c02ba579bc03f7ab 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -49,6 +49,7 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
     // Spigot Start
     public java.util.UUID spoofedUUID;
     public com.mojang.authlib.properties.Property[] spoofedProfile;
+    public boolean proxyProfileSpoof = false; // Yatopia
     public boolean preparing = true;
     // Spigot End
     private PacketListener packetListener;