Paper/patches/server/0475-Clean-up-duplicated-GameProfile-Properties.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 1 Jul 2020 03:12:06 -0400
Subject: [PATCH] Clean up duplicated GameProfile Properties
We had a bug where we accidently cloned properties resulting in skulls
growing to large sizes and preventing login.
This now automatically cleans up the extra properties.
diff --git a/src/main/java/net/minecraft/nbt/NbtUtils.java b/src/main/java/net/minecraft/nbt/NbtUtils.java
2021-06-15 07:49:09 +02:00
index 06fe97e05608fc21f90c9884d745d910beb6883d..dca8853944832e8fc5a291aa6b46d84b24181ea7 100644
--- a/src/main/java/net/minecraft/nbt/NbtUtils.java
+++ b/src/main/java/net/minecraft/nbt/NbtUtils.java
@@ -93,7 +93,8 @@ public final class NbtUtils {
for(String string2 : compoundTag.getAllKeys()) {
ListTag listTag = compoundTag.getList(string2, 10);
- for(int i = 0; i < listTag.size(); ++i) {
+ if (listTag.size() == 0) continue; // Paper - remove duplicate properties
+ for (int i = listTag.size() - 1; i < listTag.size(); ++i) { // Paper - remove duplicate properties
CompoundTag compoundTag2 = listTag.getCompound(i);
String string3 = compoundTag2.getString("Value");
if (compoundTag2.contains("Signature", 8)) {
diff --git a/src/main/java/net/minecraft/world/item/PlayerHeadItem.java b/src/main/java/net/minecraft/world/item/PlayerHeadItem.java
index 7fb2cc8d49a2d8f256f625cb99b66ef8efc3fc0e..f9980110a4614bb0206dce3dc796d9459069b750 100644
--- a/src/main/java/net/minecraft/world/item/PlayerHeadItem.java
+++ b/src/main/java/net/minecraft/world/item/PlayerHeadItem.java
@@ -53,6 +53,18 @@ public class PlayerHeadItem extends StandingAndWallBlockItem {
});
// CraftBukkit start
} else {
+ // Paper start - clean up old duplicated properties
+ CompoundTag properties = nbt.getCompound("SkullOwner").getCompound("Properties");
+ for (String key : properties.getAllKeys()) {
+ net.minecraft.nbt.ListTag values = properties.getList(key, 10);
+ if (values.size() > 1) {
+ net.minecraft.nbt.Tag texture = values.get(values.size() - 1);
+ values = new net.minecraft.nbt.ListTag();
+ values.add(texture);
+ properties.put(key, values);
+ }
+ }
+ // Paper end
net.minecraft.nbt.ListTag textures = nbt.getCompound("SkullOwner").getCompound("Properties").getList("textures", 10); // Safe due to method contracts
for (int i = 0; i < textures.size(); i++) {
if (textures.get(i) instanceof CompoundTag && !((CompoundTag) textures.get(i)).contains("Signature", 8) && ((CompoundTag) textures.get(i)).getString("Value").trim().isEmpty()) {