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89d51d5f29
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.
51 lines
3.3 KiB
Diff
51 lines
3.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: William Blake Galbreath <blake.galbreath@gmail.com>
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Date: Thu, 14 Oct 2021 12:09:39 -0500
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Subject: [PATCH] Add ItemFactory#getSpawnEgg API
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diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
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index 12f90520e4d6d5fcea0c2f8e19dad9102970cd99..ef0c6e04a89704688f7b5461b27c0036abbf647d 100644
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--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
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+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
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@@ -564,4 +564,19 @@ public final class CraftItemFactory implements ItemFactory {
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new net.md_5.bungee.api.chat.TextComponent(customName));
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}
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// Paper end - bungee hover events
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+
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+ // Paper start - old getSpawnEgg API
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+ // @Override // used to override, upstream added conflicting method, is called via Commodore now
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+ @Deprecated
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+ public ItemStack getSpawnEgg0(org.bukkit.entity.EntityType type) {
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+ if (type == null) {
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+ return null;
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+ }
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+ String typeId = type.getKey().toString();
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+ net.minecraft.resources.ResourceLocation typeKey = new net.minecraft.resources.ResourceLocation(typeId);
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+ net.minecraft.world.entity.EntityType<?> nmsType = net.minecraft.core.registries.BuiltInRegistries.ENTITY_TYPE.get(typeKey);
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+ net.minecraft.world.item.SpawnEggItem eggItem = net.minecraft.world.item.SpawnEggItem.byId(nmsType);
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+ return eggItem == null ? null : new net.minecraft.world.item.ItemStack(eggItem).asBukkitMirror();
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+ }
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+ // Paper end - old getSpawnEgg API
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
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index 6d6a7abe1aa39a2e4ecf3ac5f55b1f227e1a9db9..010014c06fcea7d603160928f124f54d6e5e63d8 100644
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--- a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
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+++ b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
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@@ -396,6 +396,15 @@ public class Commodore {
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}
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// Paper end
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+ // Paper start - ItemFactory#getSpawnEgg (paper had original method that returned ItemStack, upstream added identical but returned Material)
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+ if (owner.equals("org/bukkit/inventory/ItemFactory") && name.equals("getSpawnEgg") && desc.equals("(Lorg/bukkit/entity/EntityType;)Lorg/bukkit/inventory/ItemStack;")) {
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+ super.visitInsn(Opcodes.SWAP); // has 1 param, this moves the owner instance to the top for the checkcast
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+ super.visitTypeInsn(Opcodes.CHECKCAST, CB_PACKAGE + "/inventory/CraftItemFactory");
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+ super.visitInsn(Opcodes.SWAP); // moves param back to the the top of stack
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+ super.visitMethodInsn(Opcodes.INVOKEVIRTUAL, CB_PACKAGE + "/inventory/CraftItemFactory", "getSpawnEgg0", desc, false);
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+ return;
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+ }
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+ // Paper end - ItemFactory#getSpawnEgg
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if (modern) {
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if (owner.equals("org/bukkit/Material") || (instantiatedMethodType != null && instantiatedMethodType.getDescriptor().startsWith("(Lorg/bukkit/Material;)"))) {
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switch (name) {
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