PaperMC/patches/server/0972-Added-API-to-get-player-ha-proxy-address.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: nostalfinals <yuu8583@proton.me>
Date: Mon, 8 Apr 2024 23:24:38 +0800
Subject: [PATCH] Added API to get player ha proxy address


diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
index ea16dfa718b526d6520d7fcfc21d28f972f1f2bf..4b9da6e2140b14f1e56056f5e9e94b2169d85501 100644
--- a/src/main/java/net/minecraft/network/Connection.java
+++ b/src/main/java/net/minecraft/network/Connection.java
@@ -153,6 +153,7 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
         this.stopReadingPackets = true;
     }
     // Paper end - packet limiter
+    @Nullable public SocketAddress haProxyAddress; // Paper - Add API to get player's proxy address
 
     public Connection(PacketFlow side) {
         this.receiving = side;
diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
index 96355e1da8feb6687ea0069dda4a82fcd7e25e8a..1f696644b958538e9f5d568a2e4bba69d74a191e 100644
--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
@@ -138,6 +138,13 @@ public class ServerConnectionListener {
 
                                         Connection connection = (Connection) channel.pipeline().get("packet_handler");
                                         connection.address = socketaddr;
+
+                                        // Paper start - Add API to get player's proxy address
+                                        final String proxyAddress = message.destinationAddress();
+                                        final int proxyPort = message.destinationPort();
+
+                                        connection.haProxyAddress = new java.net.InetSocketAddress(proxyAddress, proxyPort);
+                                        // Paper end - Add API to get player's proxy address
                                     }
                                 } else {
                                     super.channelRead(ctx, msg);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 8d697782fae536377ac29acf967c764ee8a7951a..33541edc8bb2d673342448046fa29767f171bbf3 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -265,7 +265,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
     @Override
     public InetSocketAddress getAddress() {
-        if (this.getHandle().connection.protocol() == null) return null;
+        if (this.getHandle().connection == null) return null;
 
         SocketAddress addr = this.getHandle().connection.getRemoteAddress();
         if (addr instanceof InetSocketAddress) {
@@ -275,6 +275,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         }
     }
 
+    // Paper start - Add API to get player's proxy address
+    @Override
+    public @Nullable InetSocketAddress getHAProxyAddress() {
+        if (this.getHandle().connection == null) return null;
+
+        return this.getHandle().connection.connection.haProxyAddress instanceof final InetSocketAddress inetSocketAddress ? inetSocketAddress : null;
+    }
+    // Paper end - Add API to get player's proxy address
+
     public interface TransferCookieConnection {
 
         boolean isTransferred();