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Paper/patches/server/0726-Fix-new-block-data-for-EntityChangeBlockEvent.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191) 
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.
2024-03-03 17:05:34 -05:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: SoSeDiK <mrsosedik@gmail.com>
Date: Mon, 21 Mar 2022 20:00:53 +0200
Subject: [PATCH] Fix new block data for EntityChangeBlockEvent
Also standardizes how to handle EntityChangeBlockEvent before a removeBlock or destroyBlock
call. Always use 'state.getFluidState().createLegacyBlock()' to get the new state instead of
just using the 'air' state.
Also fixes the new block data for EntityBreakDoorEvent (a sub-event from
EntityChangeBlockEvent)
Co-authored-by: Lulu13022002 <41980282+Lulu13022002@users.noreply.github.com>
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/HarvestFarmland.java b/src/main/java/net/minecraft/world/entity/ai/behavior/HarvestFarmland.java
index b7abd8309a7d9744d3b3df9be8cad54f8909cc15..d3a2a6dee2d83b3df0ddc521c080f7d72b709461 100644
--- a/src/main/java/net/minecraft/world/entity/ai/behavior/HarvestFarmland.java
+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/HarvestFarmland.java
@@ -107,7 +107,7 @@ public class HarvestFarmland extends Behavior<Villager> {
Block block1 = world.getBlockState(this.aboveFarmlandPos.below()).getBlock();
if (block instanceof CropBlock && ((CropBlock) block).isMaxAge(iblockdata)) {
- if (CraftEventFactory.callEntityChangeBlockEvent(entity, this.aboveFarmlandPos, Blocks.AIR.defaultBlockState())) { // CraftBukkit
+ if (CraftEventFactory.callEntityChangeBlockEvent(entity, this.aboveFarmlandPos, iblockdata.getFluidState().createLegacyBlock())) { // CraftBukkit // Paper - fix wrong block state
world.destroyBlock(this.aboveFarmlandPos, true, entity);
} // CraftBukkit
}
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/BreakDoorGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/BreakDoorGoal.java
index 4253b3b1263a7ae5a2f5f3a34674dfea615a81ea..784a894688f98f9d0368a36d456c5c94e1ee3695 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/BreakDoorGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/BreakDoorGoal.java
@@ -72,7 +72,7 @@ public class BreakDoorGoal extends DoorInteractGoal {
if (this.breakTime == this.getDoorBreakTime() && this.isValidDifficulty(this.mob.level().getDifficulty())) {
// CraftBukkit start
- if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityBreakDoorEvent(this.mob, this.doorPos).isCancelled()) {
+ if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityBreakDoorEvent(this.mob, this.doorPos, this.mob.level().getFluidState(this.doorPos).createLegacyBlock()).isCancelled()) { // Paper - fix wrong block state
this.start();
return;
}
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/EatBlockGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/EatBlockGoal.java
index f4bc556e245179d0a4710e5255dd289aaafdceb7..d802985f1431be4332c07f0dab88feebedea4ce2 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/EatBlockGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/EatBlockGoal.java
@@ -67,8 +67,9 @@ public class EatBlockGoal extends Goal {
if (this.eatAnimationTick == this.adjustedTickDelay(4)) {
BlockPos blockposition = this.mob.blockPosition();
- if (EatBlockGoal.IS_TALL_GRASS.test(this.level.getBlockState(blockposition))) {
- if (CraftEventFactory.callEntityChangeBlockEvent(this.mob, blockposition, Blocks.AIR.defaultBlockState(), !this.level.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING))) { // CraftBukkit
+ final BlockState blockState = this.level.getBlockState(blockposition); // Paper - fix wrong block state
+ if (EatBlockGoal.IS_TALL_GRASS.test(blockState)) { // Paper - fix wrong block state
+ if (CraftEventFactory.callEntityChangeBlockEvent(this.mob, blockposition, blockState.getFluidState().createLegacyBlock(), !this.level.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING))) { // CraftBukkit // Paper - fix wrong block state
this.level.destroyBlock(blockposition, false);
}
@@ -77,7 +78,7 @@ public class EatBlockGoal extends Goal {
BlockPos blockposition1 = blockposition.below();
if (this.level.getBlockState(blockposition1).is(Blocks.GRASS_BLOCK)) {
- if (CraftEventFactory.callEntityChangeBlockEvent(this.mob, blockposition1, Blocks.AIR.defaultBlockState(), !this.level.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING))) { // CraftBukkit
+ if (CraftEventFactory.callEntityChangeBlockEvent(this.mob, blockposition1, Blocks.DIRT.defaultBlockState(), !this.level.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING))) { // CraftBukkit // Paper - Fix wrong block state
this.level.levelEvent(2001, blockposition1, Block.getId(Blocks.GRASS_BLOCK.defaultBlockState()));
this.level.setBlock(blockposition1, Blocks.DIRT.defaultBlockState(), 2);
}
diff --git a/src/main/java/net/minecraft/world/entity/animal/Rabbit.java b/src/main/java/net/minecraft/world/entity/animal/Rabbit.java
index 6e1c67ad757e466d122badd547ee3f8421eba9ba..cf4859814a60468f683e3afe285b4934d35e9704 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Rabbit.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Rabbit.java
@@ -580,7 +580,7 @@ public class Rabbit extends Animal implements VariantHolder<Rabbit.Variant> {
if (i == 0) {
// CraftBukkit start
- if (!CraftEventFactory.callEntityChangeBlockEvent(this.rabbit, blockposition, Blocks.AIR.defaultBlockState())) {
+ if (!CraftEventFactory.callEntityChangeBlockEvent(this.rabbit, blockposition, iblockdata.getFluidState().createLegacyBlock())) { // Paper - fix wrong block state
return;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
index 25f611b35a5710c595574d2d6ed50c442ca55721..6c215470ad05d59f903cbeff15088a03b42c3f66 100644
--- a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
+++ b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
@@ -375,7 +375,7 @@ public class WitherBoss extends Monster implements PowerableMob, RangedAttackMob
if (WitherBoss.canDestroy(iblockdata)) {
// CraftBukkit start
- if (!CraftEventFactory.callEntityChangeBlockEvent(this, blockposition, Blocks.AIR.defaultBlockState())) {
+ if (!CraftEventFactory.callEntityChangeBlockEvent(this, blockposition, iblockdata.getFluidState().createLegacyBlock())) { // Paper - fix wrong block state
continue;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/monster/EnderMan.java b/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
index c360135b923aa8d1ed2c7caf97ede981cb605cf2..f33c03e81b7ff643741f56eea055e6af260de618 100644
--- a/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
+++ b/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
@@ -580,7 +580,7 @@ public class EnderMan extends Monster implements NeutralMob {
boolean flag = movingobjectpositionblock.getBlockPos().equals(blockposition);
if (iblockdata.is(BlockTags.ENDERMAN_HOLDABLE) && flag) {
- if (CraftEventFactory.callEntityChangeBlockEvent(this.enderman, blockposition, Blocks.AIR.defaultBlockState())) { // CraftBukkit - Place event
+ if (CraftEventFactory.callEntityChangeBlockEvent(this.enderman, blockposition, iblockdata.getFluidState().createLegacyBlock())) { // CraftBukkit - Place event // Paper - fix wrong block state
world.removeBlock(blockposition, false);
world.gameEvent(GameEvent.BLOCK_DESTROY, blockposition, GameEvent.Context.of(this.enderman, iblockdata));
this.enderman.setCarriedBlock(iblockdata.getBlock().defaultBlockState());
diff --git a/src/main/java/net/minecraft/world/entity/monster/Ravager.java b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
index aac60e85cd6dba7d87f4a1663c2c62952521d112..151acc43c96b4545ce92d3d559d8e1591874b4b5 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Ravager.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
@@ -158,7 +158,7 @@ public class Ravager extends Raider {
if (block instanceof LeavesBlock) {
// CraftBukkit start
- if (!CraftEventFactory.callEntityChangeBlockEvent(this, blockposition, net.minecraft.world.level.block.Blocks.AIR.defaultBlockState())) {
+ if (!CraftEventFactory.callEntityChangeBlockEvent(this, blockposition, iblockdata.getFluidState().createLegacyBlock())) { // Paper - fix wrong block state
continue;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/monster/Silverfish.java b/src/main/java/net/minecraft/world/entity/monster/Silverfish.java
index 0e2725d92002c181f542e2335cdd6e6de69155e1..fcd5cc3ff8d4b38f4dea08f78723db3dac53ffde 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Silverfish.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Silverfish.java
@@ -182,7 +182,8 @@ public class Silverfish extends Monster {
if (block instanceof InfestedBlock) {
// CraftBukkit start
- if (!CraftEventFactory.callEntityChangeBlockEvent(this.silverfish, blockposition1, net.minecraft.world.level.block.Blocks.AIR.defaultBlockState())) {
+ BlockState afterState = world.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING) ? iblockdata.getFluidState().createLegacyBlock() : ((InfestedBlock) block).hostStateByInfested(world.getBlockState(blockposition1)); // Paper - fix wrong block state
+ if (!CraftEventFactory.callEntityChangeBlockEvent(this.silverfish, blockposition1, afterState)) { // Paper - fix wrong block state
continue;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
index 252355d19e4f07406f78616e2366182758e0947b..2b05824f5826a2da2539f8a6d373a16c185aa80a 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
@@ -307,7 +307,7 @@ public class ThrownPotion extends ThrowableItemProjectile implements ItemSupplie
if (iblockdata.is(BlockTags.FIRE)) {
// CraftBukkit start
- if (CraftEventFactory.callEntityChangeBlockEvent(this, pos, Blocks.AIR.defaultBlockState())) {
+ if (CraftEventFactory.callEntityChangeBlockEvent(this, pos, iblockdata.getFluidState().createLegacyBlock())) { // Paper - fix wrong block state
this.level().destroyBlock(pos, false, this);
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/level/block/ChorusFlowerBlock.java b/src/main/java/net/minecraft/world/level/block/ChorusFlowerBlock.java
index 87c66bf8fee56e77b25498d9b2524fe2b6fd6549..0ab1bbd7c8dc8e45f754434357898d8fc990a021 100644
--- a/src/main/java/net/minecraft/world/level/block/ChorusFlowerBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/ChorusFlowerBlock.java
@@ -284,7 +284,7 @@ public class ChorusFlowerBlock extends Block {
if (!world.isClientSide && projectile.mayInteract(world, blockposition) && projectile.mayBreak(world)) {
// CraftBukkit
- if (!CraftEventFactory.callEntityChangeBlockEvent(projectile, blockposition, Blocks.AIR.defaultBlockState())) {
+ if (!CraftEventFactory.callEntityChangeBlockEvent(projectile, blockposition, state.getFluidState().createLegacyBlock())) { // Paper - fix wrong block state
return;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/level/block/PointedDripstoneBlock.java b/src/main/java/net/minecraft/world/level/block/PointedDripstoneBlock.java
index 998e43e8dc6bd6b741bdcb77d2b75df8ab2feefc..d0e679745a794228bf62a9aa59422776760f3867 100644
--- a/src/main/java/net/minecraft/world/level/block/PointedDripstoneBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/PointedDripstoneBlock.java
@@ -133,7 +133,7 @@ public class PointedDripstoneBlock extends Block implements Fallable, SimpleWate
if (projectile.mayInteract(world, blockposition) && projectile.mayBreak(world) && projectile instanceof ThrownTrident && projectile.getDeltaMovement().length() > 0.6D) {
// CraftBukkit start
- if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(projectile, blockposition, Blocks.AIR.defaultBlockState())) {
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(projectile, blockposition, state.getFluidState().createLegacyBlock())) { // Paper - fix wrong block state
return;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/level/block/TntBlock.java b/src/main/java/net/minecraft/world/level/block/TntBlock.java
index 4edd2e7bb62df65d6da8c8a623cf03e7e947bf75..5fa5e8c838720eb1491aea73d462f4bc7d779956 100644
--- a/src/main/java/net/minecraft/world/level/block/TntBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/TntBlock.java
@@ -163,7 +163,7 @@ public class TntBlock extends Block {
if (projectile.isOnFire() && projectile.mayInteract(world, blockposition)) {
// CraftBukkit start
- if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(projectile, blockposition, Blocks.AIR.defaultBlockState()) || !CraftEventFactory.callTNTPrimeEvent(world, blockposition, PrimeCause.PROJECTILE, projectile, null)) {
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(projectile, blockposition, state.getFluidState().createLegacyBlock()) || !CraftEventFactory.callTNTPrimeEvent(world, blockposition, PrimeCause.PROJECTILE, projectile, null)) { // Paper - fix wrong block state
return;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/level/block/WaterlilyBlock.java b/src/main/java/net/minecraft/world/level/block/WaterlilyBlock.java
index 61abbcfe97e3d3e3da5ee658672549d14594ad17..05e14322e519d1399e87beb532e1cc4a95f689aa 100644
--- a/src/main/java/net/minecraft/world/level/block/WaterlilyBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/WaterlilyBlock.java
@@ -37,7 +37,7 @@ public class WaterlilyBlock extends BushBlock {
if (!new io.papermc.paper.event.entity.EntityInsideBlockEvent(entity.getBukkitEntity(), org.bukkit.craftbukkit.block.CraftBlock.at(world, pos)).callEvent()) { return; } // Paper - Add EntityInsideBlockEvent
if (world instanceof ServerLevel && entity instanceof Boat) {
// CraftBukkit start
- if (!CraftEventFactory.callEntityChangeBlockEvent(entity, pos, Blocks.AIR.defaultBlockState())) {
+ if (!CraftEventFactory.callEntityChangeBlockEvent(entity, pos, state.getFluidState().createLegacyBlock())) { // Paper - fix wrong block state
return;
}
// CraftBukkit end
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index d329f9fab83c30ded648763c6c0505d793daa506..55a0a154f2b37c75e40d3b33c9baf245d5dcd9d7 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1360,11 +1360,11 @@ public class CraftEventFactory {
return event;
}
- public static EntityBreakDoorEvent callEntityBreakDoorEvent(Entity entity, BlockPos pos) {
+ public static EntityBreakDoorEvent callEntityBreakDoorEvent(Entity entity, BlockPos pos, net.minecraft.world.level.block.state.BlockState newState) { // Paper
org.bukkit.entity.Entity entity1 = entity.getBukkitEntity();
Block block = CraftBlock.at(entity.level(), pos);
- EntityBreakDoorEvent event = new EntityBreakDoorEvent((LivingEntity) entity1, block);
+ EntityBreakDoorEvent event = new EntityBreakDoorEvent((LivingEntity) entity1, block, newState.createCraftBlockData()); // Paper
entity1.getServer().getPluginManager().callEvent(event);
return event;
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