PaperMC/patches/server/0444-Brand-support.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: DigitalRegent <misterwener@gmail.com>
Date: Sat, 11 Apr 2020 13:10:58 +0200
Subject: [PATCH] Brand support


diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 2c2b1aef3f510edb9bb124581739f06692ab5673..567bfcdf5c946d09bb8188435ee13930082dccf5 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -271,6 +271,7 @@ public class ServerPlayer extends Player {
     public boolean isRealPlayer; // Paper
     public final com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> cachedSingleHashSet; // Paper
     public PlayerNaturallySpawnCreaturesEvent playerNaturallySpawnedEvent; // Paper
+    public @Nullable String clientBrandName = null; // Paper - Brand name
 
     // Paper start - replace player chunk loader
     private final java.util.concurrent.atomic.AtomicReference<io.papermc.paper.chunk.system.RegionizedPlayerChunkLoader.ViewDistances> viewDistances = new java.util.concurrent.atomic.AtomicReference<>(new io.papermc.paper.chunk.system.RegionizedPlayerChunkLoader.ViewDistances(-1, -1, -1));
diff --git a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
index d25b6431ce617d90fd1d6489a308d6630b92c175..96ee68e6656a59d959ad7a7e78f5a3752d6e3dbb 100644
--- a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
@@ -54,6 +54,7 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
     private int latency;
     private volatile boolean suspendFlushingOnServerThread = false;
     private static final long KEEPALIVE_LIMIT = Long.getLong("paper.playerconnection.keepalive", 30) * 1000; // Paper - provide property to set keepalive limit
+    protected static final ResourceLocation MINECRAFT_BRAND = new ResourceLocation("brand"); // Paper - Brand support
 
     public ServerCommonPacketListenerImpl(MinecraftServer minecraftserver, Connection networkmanager, CommonListenerCookie commonlistenercookie, ServerPlayer player) { // CraftBukkit
         this.server = minecraftserver;
@@ -109,6 +110,11 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
 
     @Override
     public void handleCustomPayload(ServerboundCustomPayloadPacket packet) {
+        // Paper start - handle brand payload packet
+        if (packet.payload() instanceof net.minecraft.network.protocol.common.custom.BrandPayload brandPayload) {
+            this.player.clientBrandName = brandPayload.brand();
+        }
+        // Paper end - handle brand payload
         if (!(packet.payload() instanceof ServerboundCustomPayloadPacket.UnknownPayload)) {
             return;
         }
@@ -140,6 +146,15 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
             try {
                 byte[] data = new byte[payload.readableBytes()];
                 payload.readBytes(data);
+                // Paper start - Brand support - Retain this incase upstream decides to 'break' the new mechanism in favour of backwards compat...
+                if (identifier.equals(MINECRAFT_BRAND)) {
+                    try {
+                        this.player.clientBrandName = new net.minecraft.network.FriendlyByteBuf(io.netty.buffer.Unpooled.copiedBuffer(data)).readUtf(256);
+                    } catch (StringIndexOutOfBoundsException ex) {
+                        this.player.clientBrandName = "illegal";
+                    }
+                }
+                // Paper end
                 this.cserver.getMessenger().dispatchIncomingMessage(this.player.getBukkitEntity(), identifier.toString(), data);
             } catch (Exception ex) {
                 ServerGamePacketListenerImpl.LOGGER.error("Couldn\'t dispatch custom payload", ex);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index b92cc9f8d62cc3bfefe42c4c1fb08af4731dd48f..7b1404ac481ea9a059197b9f752327ef0bf72c5c 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -3009,6 +3009,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         // Paper end
     };
 
+    // Paper start - brand support
+    @Override
+    public String getClientBrandName() {
+        return getHandle().clientBrandName;
+    }
+    // Paper end
+
     public Player.Spigot spigot()
     {
         return this.spigot;