mirror of
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306 lines
25 KiB
Diff
306 lines
25 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Sat, 29 Oct 2022 17:02:42 -0700
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Subject: [PATCH] Fix possible StackOverflowError and NPE for some dispenses
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For saddles, carpets, horse armor, and chests for horse-likes
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a BlockDispenseEvent handler that always mutated the item without
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changing the type would result in a SO error because when it went
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to find the replacement dispense behavior (since the item "changed")
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it didn't properly handle if the replacement was the same instance
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of dispense behavior.
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Additionally equippable mob heads, wither skulls, and carved pumpkins
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are subject to the same possible error.
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Furthermore since 1.21.2, the DISPENSER_REGISTRY map doesn't have a default
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return value anymore and some dispense behaviors like equippable and
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regular items will not have a defined behavior in that map and might throw
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a NPE in that case.
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diff --git a/src/main/java/net/minecraft/core/dispenser/BoatDispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/BoatDispenseItemBehavior.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/dispenser/BoatDispenseItemBehavior.java
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+++ b/src/main/java/net/minecraft/core/dispenser/BoatDispenseItemBehavior.java
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@@ -0,0 +0,0 @@ public class BoatDispenseItemBehavior extends DefaultDispenseItemBehavior {
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stack.grow(1);
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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diff --git a/src/main/java/net/minecraft/core/dispenser/DefaultDispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/DefaultDispenseItemBehavior.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/dispenser/DefaultDispenseItemBehavior.java
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+++ b/src/main/java/net/minecraft/core/dispenser/DefaultDispenseItemBehavior.java
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@@ -0,0 +0,0 @@ public class DefaultDispenseItemBehavior implements DispenseItemBehavior {
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if (!dropper && !event.getItem().getType().equals(craftItem.getType())) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(sourceblock, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior.getClass() != DefaultDispenseItemBehavior.class) {
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idispensebehavior.dispense(sourceblock, eventStack);
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} else {
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diff --git a/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
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+++ b/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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stack.grow(1);
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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stack.grow(1);
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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stack.grow(1);
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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- if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != EquipmentDispenseItemBehavior.INSTANCE) {
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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+ if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) { // Paper - fix possible StackOverflowError
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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}
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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- if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != EquipmentDispenseItemBehavior.INSTANCE) {
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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+ if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) { // Paper - fix possible StackOverflowError
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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}
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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stack.grow(1);
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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stack.shrink(1);
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this.setSuccess(true);
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} else {
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- this.setSuccess(EquipmentDispenseItemBehavior.dispenseEquipment(pointer, stack));
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+ this.setSuccess(EquipmentDispenseItemBehavior.dispenseEquipment(pointer, stack, this)); // Paper - fix possible StackOverflowError
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}
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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stack.shrink(1);
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this.setSuccess(true);
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} else {
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- this.setSuccess(EquipmentDispenseItemBehavior.dispenseEquipment(pointer, stack));
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+ this.setSuccess(EquipmentDispenseItemBehavior.dispenseEquipment(pointer, stack, this)); // Paper - fix possible StackOverflowError
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}
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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@@ -0,0 +0,0 @@ public interface DispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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- if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != EquipmentDispenseItemBehavior.INSTANCE) {
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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+ if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) { // Paper - fix possible StackOverflowError
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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}
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diff --git a/src/main/java/net/minecraft/core/dispenser/EquipmentDispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/EquipmentDispenseItemBehavior.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/dispenser/EquipmentDispenseItemBehavior.java
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+++ b/src/main/java/net/minecraft/core/dispenser/EquipmentDispenseItemBehavior.java
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@@ -0,0 +0,0 @@ public class EquipmentDispenseItemBehavior extends DefaultDispenseItemBehavior {
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@Override
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protected ItemStack execute(BlockSource pointer, ItemStack stack) {
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- return EquipmentDispenseItemBehavior.dispenseEquipment(pointer, stack) ? stack : super.execute(pointer, stack);
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+ return EquipmentDispenseItemBehavior.dispenseEquipment(pointer, stack, this) ? stack : super.execute(pointer, stack); // Paper - fix possible StackOverflowError
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}
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- public static boolean dispenseEquipment(BlockSource pointer, ItemStack stack) {
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+ @Deprecated @io.papermc.paper.annotation.DoNotUse // Paper
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+ public static boolean dispenseEquipment(BlockSource pointer, ItemStack armor) {
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+ // Paper start
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+ return dispenseEquipment(pointer, armor, null);
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+ }
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+ public static boolean dispenseEquipment(BlockSource pointer, ItemStack stack, @javax.annotation.Nullable DispenseItemBehavior currentBehavior) {
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BlockPos blockposition = pointer.pos().relative((Direction) pointer.state().getValue(DispenserBlock.FACING));
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List<LivingEntity> list = pointer.level().getEntitiesOfClass(LivingEntity.class, new AABB(blockposition), (entityliving) -> {
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return entityliving.canEquipWithDispenser(stack);
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@@ -0,0 +0,0 @@ public class EquipmentDispenseItemBehavior extends DefaultDispenseItemBehavior {
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stack.grow(1);
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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- if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != EquipmentDispenseItemBehavior.INSTANCE) {
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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+ if (idispensebehavior != DispenseItemBehavior.NOOP && (currentBehavior == null || idispensebehavior != currentBehavior)) { // Paper - fix possible StackOverflowError
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idispensebehavior.dispense(pointer, eventStack);
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return true;
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}
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diff --git a/src/main/java/net/minecraft/core/dispenser/MinecartDispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/MinecartDispenseItemBehavior.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/dispenser/MinecartDispenseItemBehavior.java
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+++ b/src/main/java/net/minecraft/core/dispenser/MinecartDispenseItemBehavior.java
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@@ -0,0 +0,0 @@ public class MinecartDispenseItemBehavior extends DefaultDispenseItemBehavior {
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stack.grow(1);
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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diff --git a/src/main/java/net/minecraft/core/dispenser/ProjectileDispenseBehavior.java b/src/main/java/net/minecraft/core/dispenser/ProjectileDispenseBehavior.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/dispenser/ProjectileDispenseBehavior.java
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+++ b/src/main/java/net/minecraft/core/dispenser/ProjectileDispenseBehavior.java
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@@ -0,0 +0,0 @@ public class ProjectileDispenseBehavior extends DefaultDispenseItemBehavior {
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stack.grow(1);
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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diff --git a/src/main/java/net/minecraft/core/dispenser/ShearsDispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/ShearsDispenseItemBehavior.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/dispenser/ShearsDispenseItemBehavior.java
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+++ b/src/main/java/net/minecraft/core/dispenser/ShearsDispenseItemBehavior.java
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@@ -0,0 +0,0 @@ public class ShearsDispenseItemBehavior extends OptionalDispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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diff --git a/src/main/java/net/minecraft/core/dispenser/ShulkerBoxDispenseBehavior.java b/src/main/java/net/minecraft/core/dispenser/ShulkerBoxDispenseBehavior.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/dispenser/ShulkerBoxDispenseBehavior.java
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+++ b/src/main/java/net/minecraft/core/dispenser/ShulkerBoxDispenseBehavior.java
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@@ -0,0 +0,0 @@ public class ShulkerBoxDispenseBehavior extends OptionalDispenseItemBehavior {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- DispenseItemBehavior idispensebehavior = (DispenseItemBehavior) DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ DispenseItemBehavior idispensebehavior = DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (idispensebehavior != DispenseItemBehavior.NOOP && idispensebehavior != this) {
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idispensebehavior.dispense(pointer, eventStack);
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return stack;
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diff --git a/src/main/java/net/minecraft/world/level/block/DispenserBlock.java b/src/main/java/net/minecraft/world/level/block/DispenserBlock.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/world/level/block/DispenserBlock.java
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+++ b/src/main/java/net/minecraft/world/level/block/DispenserBlock.java
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@@ -0,0 +0,0 @@ public class DispenserBlock extends BaseEntityBlock {
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}
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}
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+ // Paper start - Fix NPE with equippable and items without behavior
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+ public static DispenseItemBehavior getDispenseBehavior(BlockSource pointer, ItemStack stack) {
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+ return ((DispenserBlock) pointer.state().getBlock()).getDispenseMethod(pointer.level(), stack);
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+ }
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+ // Paper end - Fix NPE with equippable and items without behavior
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+
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protected DispenseItemBehavior getDispenseMethod(Level world, ItemStack stack) {
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if (!stack.isItemEnabled(world.enabledFeatures())) {
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return DispenserBlock.DEFAULT_BEHAVIOR;
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diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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@@ -0,0 +0,0 @@ public class CraftEventFactory {
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if (!event.getItem().equals(craftItem)) {
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// Chain to handler for new item
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ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
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- net.minecraft.core.dispenser.DispenseItemBehavior itemBehavior = net.minecraft.world.level.block.DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
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+ net.minecraft.core.dispenser.DispenseItemBehavior itemBehavior = net.minecraft.world.level.block.DispenserBlock.getDispenseBehavior(pointer, eventStack); // Paper - Fix NPE with equippable and items without behavior
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if (itemBehavior != net.minecraft.core.dispenser.DispenseItemBehavior.NOOP && itemBehavior != instance) {
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itemBehavior.dispense(pointer, eventStack);
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return itemStack;
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