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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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79
patches/server/0559-ItemStack-repair-check-API.patch Normal file
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@ -0,0 +1,79 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 15 May 2021 22:11:11 -0700
Subject: [PATCH] ItemStack repair check API
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
index 44b0acb82f10a35bc0c42fdb6fd685aadc76d789..6eca86a2ab7145f4c60abb90cd46b4098ad8fb56 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -551,6 +551,14 @@ public final class CraftMagicNumbers implements UnsafeValues {
return io.papermc.paper.inventory.ItemRarity.values()[getItem(itemStack.getType()).getRarity(CraftItemStack.asNMSCopy(itemStack)).ordinal()];
}
+ @Override
+ public boolean isValidRepairItemStack(org.bukkit.inventory.ItemStack itemToBeRepaired, org.bukkit.inventory.ItemStack repairMaterial) {
+ if (!itemToBeRepaired.getType().isItem() || !repairMaterial.getType().isItem()) {
+ return false;
+ }
+ return CraftMagicNumbers.getItem(itemToBeRepaired.getType()).isValidRepairItem(CraftItemStack.asNMSCopy(itemToBeRepaired), CraftItemStack.asNMSCopy(repairMaterial));
+ }
+
@Override
public int getProtocolVersion() {
return net.minecraft.SharedConstants.getCurrentVersion().getProtocolVersion();
diff --git a/src/test/java/io/papermc/paper/util/ItemStackRepairCheckTest.java b/src/test/java/io/papermc/paper/util/ItemStackRepairCheckTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..6b8d360ef86e181a680ad77f28b7dd7368dddfe7
--- /dev/null
+++ b/src/test/java/io/papermc/paper/util/ItemStackRepairCheckTest.java
@@ -0,0 +1,48 @@
+package io.papermc.paper.util;
+
+import org.bukkit.Material;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.support.AbstractTestingBase;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class ItemStackRepairCheckTest extends AbstractTestingBase {
+
+ @Test
+ public void testIsRepariableBy() {
+ ItemStack diamondPick = new ItemStack(Material.DIAMOND_PICKAXE);
+
+ assertTrue(diamondPick.isRepairableBy(new ItemStack(Material.DIAMOND)), "diamond pick isn't repairable by a diamond");
+ }
+
+ @Test
+ public void testCanRepair() {
+ ItemStack diamond = new ItemStack(Material.DIAMOND);
+
+ assertTrue(diamond.canRepair(new ItemStack(Material.DIAMOND_AXE)), "diamond can't repair a diamond axe");
+ }
+
+ @Test
+ public void testIsNotRepairableBy() {
+ ItemStack notDiamondPick = new ItemStack(Material.ACACIA_SAPLING);
+
+ assertFalse(notDiamondPick.isRepairableBy(new ItemStack(Material.DIAMOND)), "acacia sapling is repairable by a diamond");
+ }
+
+ @Test
+ public void testCanNotRepair() {
+ ItemStack diamond = new ItemStack(Material.DIAMOND);
+
+ assertFalse(diamond.canRepair(new ItemStack(Material.OAK_BUTTON)), "diamond can repair oak button");
+ }
+
+ @Test
+ public void testInvalidItem() {
+ ItemStack badItemStack = new ItemStack(Material.ACACIA_WALL_SIGN);
+
+ assertFalse(badItemStack.isRepairableBy(new ItemStack(Material.DIAMOND)), "acacia wall sign is repairable by diamond");
+ }
+}