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Allow enabling sand duping (#10191)

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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.
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Owen 2024-03-03 17:05:34 -05:00 • committed by GitHub
parent b21eb4d9a4
commit 89d51d5f29
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673 changed files with 157 additions and 189 deletions
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patches/server/0936-Allow-proper-checking-of-empty-item-stacks.patch
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@ -1,31 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aeltumn <daniel@goossens.ch>
Date: Mon, 28 Aug 2023 13:44:09 +0200
Subject: [PATCH] Allow proper checking of empty item stacks
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
index a2e605bc1418dc0b5570566a6e348df03c9aee4c..e1f9a603e7adf3468faa9bb6d93dd3339327b47e 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
@@ -33,12 +33,19 @@ public final class CraftItemStack extends ItemStack {
}
// Paper end - MC Utils
+ // Paper start - override isEmpty to use vanilla's impl
+ @Override
+ public boolean isEmpty() {
+ return handle == null || handle.isEmpty();
+ }
+ // Paper end - override isEmpty to use vanilla's impl
+
public static net.minecraft.world.item.ItemStack asNMSCopy(ItemStack original) {
if (original instanceof CraftItemStack) {
CraftItemStack stack = (CraftItemStack) original;
return stack.handle == null ? net.minecraft.world.item.ItemStack.EMPTY : stack.handle.copy();
}
- if (original == null || original.getType() == Material.AIR) {
+ if (original == null || original.isEmpty()) { // Paper - override isEmpty to use vanilla's impl; use isEmpty
return net.minecraft.world.item.ItemStack.EMPTY;
}