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PaperMC/patches/server/1043-Fix-possible-StackOverflowError-for-some-dispenses.patch
Nassim Jahnke 31699ae9a8
Updated Upstream (Bukkit/CraftBukkit) (#10242) 
* Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
a6a9d2a4 Remove some old ApiStatus.Experimental annotations
be72314c SPIGOT-7300, PR-829: Add new DamageSource API providing enhanced information about entity damage
b252cf05 SPIGOT-7576, PR-970: Add methods in MushroomCow to change stew effects
b1c689bd PR-902: Add Server#isLoggingIPs to get log-ips configuration
08f86d1c PR-971: Add Player methods for client-side potion effects
2e3024a9 PR-963: Add API for in-world structures
a23292a7 SPIGOT-7530, PR-948: Improve Resource Pack API with new 1.20.3 functionality
1851857b SPIGOT-3071, PR-969: Add entity spawn method with spawn reason
cde4c52a SPIGOT-5553, PR-964: Add EntityKnockbackEvent

CraftBukkit Changes:
38fd4bd50 Fix accidentally renamed internal damage method
80f0ce4be SPIGOT-7300, PR-1180: Add new DamageSource API providing enhanced information about entity damage
7e43f3b16 SPIGOT-7581: Fix typo in BlockMushroom
ea14b7d90 SPIGOT-7576, PR-1347: Add methods in MushroomCow to change stew effects
4c687f243 PR-1259: Add Server#isLoggingIPs to get log-ips configuration
22a541a29 Improve support for per-world game rules
cb7dccce2 PR-1348: Add Player methods for client-side potion effects
b8d6109f0 PR-1335: Add API for in-world structures
4398a1b5b SPIGOT-7577: Make CraftWindCharge#explode discard the entity
e74107678 Fix Crafter maximum stack size
0bb0f4f6a SPIGOT-7530, PR-1314: Improve Resource Pack API with new 1.20.3 functionality
4949f556d SPIGOT-3071, PR-1345: Add entity spawn method with spawn reason
20ac73ca2 PR-1353: Fix Structure#place not working as documented with 0 palette
3c1b77871 SPIGOT-6911, PR-1349: Change max book length in CraftMetaBook
333701839 SPIGOT-7572: Bee nests generated without bees
f48f4174c SPIGOT-5553, PR-1336: Add EntityKnockbackEvent
2024-02-11 22:28:00 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 29 Oct 2022 17:02:42 -0700
Subject: [PATCH] Fix possible StackOverflowError for some dispenses
For saddles, carpets, horse armor, and chests for horse-likes
a BlockDispenseEvent handler that always mutated the item without
changing the type would result in a SO error because when it went
to find the replacement dispense behavior (since the item "changed")
it didn't properly handle if the replacement was the same instance
of dispense behavior.
Additionally equippable mob heads, wither skulls, and carved pumpkins
are subject to the same possible error.
diff --git a/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
index 1fb809486ee56efd3d0ef3fa02503ba9be459f68..58eccc76fe4c24c364e6c634fcca60ab771a5792 100644
--- a/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
+++ b/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
@@ -348,7 +348,7 @@ public interface DispenseItemBehavior {
// Chain to handler for new item
ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
- if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != ArmorItem.DISPENSE_ITEM_BEHAVIOR) {
+ if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) { // Paper - fix possible StackOverflowError
idispensebehavior.dispense(pointer, eventStack);
return stack;
}
@@ -404,7 +404,7 @@ public interface DispenseItemBehavior {
// Chain to handler for new item
ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
- if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != ArmorItem.DISPENSE_ITEM_BEHAVIOR) {
+ if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) { // Paper - fix possible StackOverflowError
idispensebehavior.dispense(pointer, eventStack);
return stack;
}
@@ -478,7 +478,7 @@ public interface DispenseItemBehavior {
// Chain to handler for new item
ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
- if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != ArmorItem.DISPENSE_ITEM_BEHAVIOR) {
+ if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) { // Paper - fix possible StackOverflowError
idispensebehavior.dispense(pointer, eventStack);
return stack;
}
@@ -924,7 +924,7 @@ public interface DispenseItemBehavior {
OptionalDispenseItemBehavior dispensebehaviormaybe1 = new OptionalDispenseItemBehavior() {
@Override
protected ItemStack execute(BlockSource pointer, ItemStack stack) {
- this.setSuccess(ArmorItem.dispenseArmor(pointer, stack));
+ this.setSuccess(ArmorItem.dispenseArmor(pointer, stack, this)); // Paper - fix possible StackOverflowError
return stack;
}
};
@@ -978,7 +978,7 @@ public interface DispenseItemBehavior {
stack.shrink(1);
this.setSuccess(true);
} else {
- this.setSuccess(ArmorItem.dispenseArmor(pointer, stack));
+ this.setSuccess(ArmorItem.dispenseArmor(pointer, stack, this)); // Paper - fix possible StackOverflowError
}
return stack;
@@ -1024,7 +1024,7 @@ public interface DispenseItemBehavior {
stack.shrink(1);
this.setSuccess(true);
} else {
- this.setSuccess(ArmorItem.dispenseArmor(pointer, stack));
+ this.setSuccess(ArmorItem.dispenseArmor(pointer, stack, this)); // Paper - fix possible StackOverflowError
}
return stack;
diff --git a/src/main/java/net/minecraft/world/item/ArmorItem.java b/src/main/java/net/minecraft/world/item/ArmorItem.java
index 42d87800a328f71c5127ce5599ca4c71cc9bb1cd..6b81be03f87967124b046708557e05d519aa79e4 100644
--- a/src/main/java/net/minecraft/world/item/ArmorItem.java
+++ b/src/main/java/net/minecraft/world/item/ArmorItem.java
@@ -43,7 +43,7 @@ public class ArmorItem extends Item implements Equipable {
public static final DispenseItemBehavior DISPENSE_ITEM_BEHAVIOR = new DefaultDispenseItemBehavior() {
@Override
protected ItemStack execute(BlockSource pointer, ItemStack stack) {
- return ArmorItem.dispenseArmor(pointer, stack) ? stack : super.execute(pointer, stack);
+ return ArmorItem.dispenseArmor(pointer, stack, this) ? stack : super.execute(pointer, stack); // Paper - fix possible StackOverflowError
}
};
protected final ArmorItem.Type type;
@@ -53,7 +53,13 @@ public class ArmorItem extends Item implements Equipable {
protected final ArmorMaterial material;
private final Multimap<Attribute, AttributeModifier> defaultModifiers;
+ @Deprecated @io.papermc.paper.annotation.DoNotUse // Paper
public static boolean dispenseArmor(BlockSource pointer, ItemStack armor) {
+ // Paper start
+ return dispenseArmor(pointer, armor, null);
+ }
+ public static boolean dispenseArmor(BlockSource pointer, ItemStack armor, @javax.annotation.Nullable DispenseItemBehavior currentBehavior) {
+ // Paper end
BlockPos blockposition = pointer.pos().relative((Direction) pointer.state().getValue(DispenserBlock.FACING));
List<LivingEntity> list = pointer.level().getEntitiesOfClass(LivingEntity.class, new AABB(blockposition), EntitySelector.NO_SPECTATORS.and(new EntitySelector.MobCanWearArmorEntitySelector(armor)));
@@ -84,7 +90,7 @@ public class ArmorItem extends Item implements Equipable {
// Chain to handler for new item
ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
- if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != ArmorItem.DISPENSE_ITEM_BEHAVIOR) {
+ if (idispensebehavior != DispenseItemBehavior.NOOP && (currentBehavior == null || idispensebehavior != currentBehavior)) { // Paper - fix possible StackOverflowError
idispensebehavior.dispense(pointer, eventStack);
return true;
}
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