Paper/patches/server/0388-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 eacc0675d751caf996c9741a5ef5df28d1b9999b..80198c2f6419a3358f41df15dd7bbeb642d37585 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -322,6 +322,7 @@ public class ServerPlayer extends net.minecraft.world.entity.player.Player {
     // CraftBukkit end
     public boolean isRealPlayer; // Paper
     public com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent playerNaturallySpawnedEvent; // Paper - PlayerNaturallySpawnCreaturesEvent
+    public @Nullable String clientBrandName = null; // Paper - Brand support
 
     public ServerPlayer(MinecraftServer server, ServerLevel world, GameProfile profile, ClientInformation clientOptions) {
         super(world, world.getSharedSpawnPos(), world.getSharedSpawnAngle(), profile);
diff --git a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
index b9fbaddcc8239bf737fdea51790f678306e511eb..9a8b08d4b70b8890961e4af7ce6e870aa1c7c810 100644
--- a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java
@@ -84,6 +84,7 @@ 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 = ResourceLocation.withDefaultNamespace("brand"); // Paper - Brand support
 
     public ServerCommonPacketListenerImpl(MinecraftServer minecraftserver, Connection networkmanager, CommonListenerCookie commonlistenercookie, ServerPlayer player) { // CraftBukkit
         this.server = minecraftserver;
@@ -155,6 +156,11 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack
 
     @Override
     public void handleCustomPayload(ServerboundCustomPayloadPacket packet) {
+        // Paper start - Brand support
+        if (packet.payload() instanceof net.minecraft.network.protocol.common.custom.BrandPayload brandPayload) {
+            this.player.clientBrandName = brandPayload.brand();
+        }
+        // Paper end - Brand support
         if (!(packet.payload() instanceof DiscardedPayload)) {
             return;
         }
@@ -186,6 +192,15 @@ 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 - Brand support
                 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 e4c39eba10124ebf675ac721866e0c73bf15e533..ad109929cb8d9be8e147adaf744f6fa588414404 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -3154,6 +3154,13 @@ 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;