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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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GPG key ID: B5690EEEBB952194
673 changed files with 157 additions and 189 deletions
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patches/server/0883-Call-missing-BlockDispenseEvent.patch Normal file
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@ -0,0 +1,88 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Lulu13022002 <41980282+Lulu13022002@users.noreply.github.com>
Date: Sat, 29 Oct 2022 15:41:56 +0200
Subject: [PATCH] Call missing BlockDispenseEvent
diff --git a/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
index b83af374a33a66a6ceeca119b961eea883bba41c..175b965c92b8b8be9c671e1ee478afa9a2f7bf82 100644
--- a/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
+++ b/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
@@ -1112,6 +1112,13 @@ public interface DispenseItemBehavior {
this.setSuccess(true);
if (iblockdata.is(Blocks.RESPAWN_ANCHOR)) {
if ((Integer) iblockdata.getValue(RespawnAnchorBlock.CHARGE) != 4) {
+ // Paper start - Call missing BlockDispenseEvent
+ ItemStack result = org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockDispenseEvent(pointer, blockposition, stack, this);
+ if (result != null) {
+ this.setSuccess(false);
+ return result;
+ }
+ // Paper end - Call missing BlockDispenseEvent
RespawnAnchorBlock.charge((Entity) null, worldserver, blockposition, iblockdata);
stack.shrink(1);
} else {
@@ -1134,6 +1141,13 @@ public interface DispenseItemBehavior {
Optional<BlockState> optional = HoneycombItem.getWaxed(iblockdata);
if (optional.isPresent()) {
+ // Paper start - Call missing BlockDispenseEvent
+ ItemStack result = org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockDispenseEvent(pointer, blockposition, stack, this);
+ if (result != null) {
+ this.setSuccess(false);
+ return result;
+ }
+ // Paper end - Call missing BlockDispenseEvent
worldserver.setBlockAndUpdate(blockposition, (BlockState) optional.get());
worldserver.levelEvent(3003, blockposition, 0);
stack.shrink(1);
@@ -1159,6 +1173,12 @@ public interface DispenseItemBehavior {
if (!worldserver.getBlockState(blockposition1).is(BlockTags.CONVERTABLE_TO_MUD)) {
return this.defaultDispenseItemBehavior.dispense(pointer, stack);
} else {
+ // Paper start - Call missing BlockDispenseEvent
+ ItemStack result = org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockDispenseEvent(pointer, blockposition1, stack, this);
+ if (result != null) {
+ return result;
+ }
+ // Paper end - Call missing BlockDispenseEvent
if (!worldserver.isClientSide) {
for (int k = 0; k < 5; ++k) {
worldserver.sendParticles(ParticleTypes.SPLASH, (double) blockposition.getX() + worldserver.random.nextDouble(), (double) (blockposition.getY() + 1), (double) blockposition.getZ() + worldserver.random.nextDouble(), 1, 0.0D, 0.0D, 0.0D, 1.0D);
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 52c1d39f494ba441bc93382d895679bcd15fcbde..cd6ee371910328d4ab6f4a018fa0e4a48dbc7982 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -2109,6 +2109,32 @@ public class CraftEventFactory {
}
// Paper end
+ // Paper start - Call missing BlockDispenseEvent
+ @Nullable
+ public static ItemStack handleBlockDispenseEvent(net.minecraft.core.dispenser.BlockSource pointer, BlockPos to, ItemStack itemStack, net.minecraft.core.dispenser.DispenseItemBehavior instance) {
+ org.bukkit.block.Block bukkitBlock = CraftBlock.at(pointer.level(), pointer.pos());
+ CraftItemStack craftItem = CraftItemStack.asCraftMirror(itemStack.copyWithCount(1));
+
+ org.bukkit.event.block.BlockDispenseEvent event = new org.bukkit.event.block.BlockDispenseEvent(bukkitBlock, craftItem.clone(), CraftVector.toBukkit(to));
+ if (!net.minecraft.world.level.block.DispenserBlock.eventFired) {
+ if (!event.callEvent()) {
+ return itemStack;
+ }
+ }
+
+ if (!event.getItem().equals(craftItem)) {
+ // Chain to handler for new item
+ ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
+ net.minecraft.core.dispenser.DispenseItemBehavior itemBehavior = net.minecraft.world.level.block.DispenserBlock.DISPENSER_REGISTRY.get(eventStack.getItem());
+ if (itemBehavior != net.minecraft.core.dispenser.DispenseItemBehavior.NOOP && itemBehavior != instance) {
+ itemBehavior.dispense(pointer, eventStack);
+ return itemStack;
+ }
+ }
+ return null;
+ }
+ // Paper end - Call missing BlockDispenseEvent
+
// Paper start - add EntityFertilizeEggEvent
/**
* Calls the {@link io.papermc.paper.event.entity.EntityFertilizeEggEvent}.