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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/0903-Respect-randomizeData-on-more-entities-when-spawning.patch Normal file
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@ -0,0 +1,68 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 13 Jul 2023 16:10:07 -0700
Subject: [PATCH] Respect randomizeData on more entities when spawning
* ItemEntity
* PrimedTNT
* FireworkRocketEntity
* ExperienceOrb
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityTypes.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityTypes.java
index 2c60f2d82daacfcfc1eb9f64267ca8ae70726d17..21d3b6f2021b2afd88c5ef6b9a375977d1ccadef 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityTypes.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityTypes.java
@@ -217,6 +217,13 @@ public final class CraftEntityTypes {
entity.setDirection(direction.getX(), direction.getY(), direction.getZ());
};
private static final BiConsumer<SpawnData, net.minecraft.world.entity.Entity> ROT = (spawnData, entity) -> entity.setRot(spawnData.yaw(), spawnData.pitch()); // Paper
+ // Paper start - respect randomizeData
+ private static final BiConsumer<SpawnData, net.minecraft.world.entity.Entity> CLEAR_MOVE_IF_NOT_RANDOMIZED = (spawnData, entity) -> {
+ if (!spawnData.randomizeData()) {
+ entity.setDeltaMovement(net.minecraft.world.phys.Vec3.ZERO);
+ }
+ };
+ // Paper end - respect randomizeData
private static final Map<Class<?>, EntityTypeData<?, ?>> CLASS_TYPE_DATA = new HashMap<>();
private static final Map<EntityType, EntityTypeData<?, ?>> ENTITY_TYPE_DATA = new HashMap<>();
@@ -365,11 +372,12 @@ public final class CraftEntityTypes {
net.minecraft.world.item.ItemStack itemStack = new net.minecraft.world.item.ItemStack(Items.STONE);
ItemEntity item = new ItemEntity(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), itemStack);
item.setPickUpDelay(10);
+ CLEAR_MOVE_IF_NOT_RANDOMIZED.accept(spawnData, item); // Paper - respect randomizeData
return item;
}));
register(new EntityTypeData<>(EntityType.EXPERIENCE_ORB, ExperienceOrb.class, CraftExperienceOrb::new,
- spawnData -> new net.minecraft.world.entity.ExperienceOrb(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), 0, org.bukkit.entity.ExperienceOrb.SpawnReason.CUSTOM, null, null) // Paper
+ combine(combine(spawnData -> new net.minecraft.world.entity.ExperienceOrb(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), 0, org.bukkit.entity.ExperienceOrb.SpawnReason.CUSTOM, null, null), CLEAR_MOVE_IF_NOT_RANDOMIZED), (spawnData, experienceOrb) -> { if (!spawnData.randomizeData()) { experienceOrb.setYRot(0); } }) // Paper - respect randomizeData
));
register(new EntityTypeData<>(EntityType.AREA_EFFECT_CLOUD, AreaEffectCloud.class, CraftAreaEffectCloud::new, createAndMove(net.minecraft.world.entity.EntityType.AREA_EFFECT_CLOUD))); // Paper - set area effect cloud rotation
register(new EntityTypeData<>(EntityType.EGG, Egg.class, CraftEgg::new, spawnData -> new ThrownEgg(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z())));
@@ -381,12 +389,23 @@ public final class CraftEntityTypes {
entity.setItem(CraftItemStack.asNMSCopy(new ItemStack(Material.SPLASH_POTION, 1)));
return entity;
}));
- register(new EntityTypeData<>(EntityType.PRIMED_TNT, TNTPrimed.class, CraftTNTPrimed::new, spawnData -> new PrimedTnt(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), null)));
+ register(new EntityTypeData<>(EntityType.PRIMED_TNT, TNTPrimed.class, CraftTNTPrimed::new, combine(spawnData -> new PrimedTnt(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), null), CLEAR_MOVE_IF_NOT_RANDOMIZED))); // Paper - respect randomizeData
register(new EntityTypeData<>(EntityType.FALLING_BLOCK, FallingBlock.class, CraftFallingBlock::new, spawnData -> {
BlockPos pos = BlockPos.containing(spawnData.x(), spawnData.y(), spawnData.z());
return new FallingBlockEntity(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), spawnData.world().getBlockState(pos)); // Paper - create falling block entities correctly
}));
- register(new EntityTypeData<>(EntityType.FIREWORK, Firework.class, CraftFirework::new, spawnData -> new FireworkRocketEntity(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), net.minecraft.world.item.ItemStack.EMPTY)));
+ // Paper start - respect randomizeData
+ register(new EntityTypeData<>(EntityType.FIREWORK, Firework.class, CraftFirework::new, spawnData -> {
+ FireworkRocketEntity entity = new FireworkRocketEntity(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), net.minecraft.world.item.ItemStack.EMPTY);
+ if (!spawnData.randomizeData()) {
+ // logic below was taken from FireworkRocketEntity constructor
+ entity.setDeltaMovement(0, 0.05, 0);
+ //noinspection PointlessArithmeticExpression
+ entity.lifetime = 10 * 1 + 6;
+ }
+ return entity;
+ }));
+ // Paper end - respect randomizeData
register(new EntityTypeData<>(EntityType.EVOKER_FANGS, EvokerFangs.class, CraftEvokerFangs::new, spawnData -> new net.minecraft.world.entity.projectile.EvokerFangs(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), (float) Math.toRadians(spawnData.yaw()), 0, null)));
register(new EntityTypeData<>(EntityType.MINECART_COMMAND, CommandMinecart.class, CraftMinecartCommand::new, spawnData -> new MinecartCommandBlock(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z())));
register(new EntityTypeData<>(EntityType.MINECART, RideableMinecart.class, CraftMinecartRideable::new, spawnData -> new Minecart(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z())));