Paper/patches/server/0438-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 14126f4f2f0c8d5ae06275fd735178a2c4d3efc0..f73988baef278bf603fc53a8a371514a094d9c37 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -278,6 +278,7 @@ public class ServerPlayer extends Player {
     public boolean isRealPlayer; // Paper
     public final com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> cachedSingleHashSet; // Paper
     public com.destroystokyo.paper.event.entity.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 44aa178968c87fa72023a2c0f33c1a8123f3db72..f489b207cd3b62a33723f2e9ed0f46020d7f4fd1 100644
--- a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
@@ -55,6 +55,7 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
     private volatile boolean suspendFlushingOnServerThread = false;
     public final java.util.Map<java.util.UUID, net.kyori.adventure.resource.ResourcePackCallback> packCallbacks = new java.util.concurrent.ConcurrentHashMap<>(); // Paper - adventure resource pack callbacks
     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;
@@ -110,6 +111,11 @@ 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;
         }
@@ -141,6 +147,15 @@ 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 196ece23104bc67a2df4e528851c0a2df8baaf5b..ff8bef2a88f04e4a333f90de05faddd66c69be20 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -3030,6 +3030,13 @@ 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;