PaperMC/patches/server/0470-Fix-crash-from-invalid-ingredient-lists-in-VillagerA.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

24 lines
1.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 27 Dec 2020 11:31:06 +0000
Subject: [PATCH] Fix crash from invalid ingredient lists in
VillagerAcquireTradeEvent
diff --git a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
index ddc002f269527201724457c0b820788200441e0c..9bc5a9592cabe087effc03e5347ea1d75794960b 100644
--- a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
@@ -261,7 +261,11 @@ public abstract class AbstractVillager extends AgeableMob implements InventoryCa
Bukkit.getPluginManager().callEvent(event);
}
if (!event.isCancelled()) {
- recipeList.add(CraftMerchantRecipe.fromBukkit(event.getRecipe()).toMinecraft());
+ // Paper start - Fix crash from invalid ingredient list
+ final CraftMerchantRecipe craftMerchantRecipe = CraftMerchantRecipe.fromBukkit(event.getRecipe());
+ if (craftMerchantRecipe.getIngredients().isEmpty()) return;
+ recipeList.add(craftMerchantRecipe.toMinecraft());
+ // Paper end - Fix crash from invalid ingredient list
}
// CraftBukkit end
++j;