Paper/patches/server/0689-Add-missing-IAE-check-for-PersistentDataContainer-ha.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191)
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: u9g <winworkswow@gmail.com>
Date: Mon, 3 Jan 2022 23:32:42 -0500
Subject: [PATCH] Add missing IAE check for PersistentDataContainer#has
diff --git a/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java b/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java
index 3001bb0e3d4af9b16645a0136093db594b89ab01..984e988a47aa55a3fd92198e379d0f92f511daef 100644
--- a/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java
+++ b/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataContainer.java
@@ -57,6 +57,7 @@ public class CraftPersistentDataContainer implements PersistentDataContainer {
@Override
public boolean has(NamespacedKey key) {
+ Preconditions.checkArgument(key != null, "The provided key for the custom value was null"); // Paper
return this.customDataTags.get(key.toString()) != null;
}