mirrors/papermc
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages 1 Wiki Activity Actions

Allow enabling sand duping (#10191)

Browse source 
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.
This commit is contained in:
Owen 2024-03-03 17:05:34 -05:00 • committed by GitHub
parent b21eb4d9a4
commit 89d51d5f29
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
673 changed files with 157 additions and 189 deletions
Download patch file Download diff file Expand all files Collapse all files

74
patches/server/0750-Prevent-entity-loading-causing-async-lookups.patch Normal file
View file

@ -0,0 +1,74 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Sun, 6 Mar 2022 11:09:09 -0500
Subject: [PATCH] Prevent entity loading causing async lookups
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 3d0f7310840742a5b16f0c0a7115dc0c90202919..45712b358e97b65396f63b34c09debc1d42fdbb9 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -727,6 +727,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
public void baseTick() {
this.level().getProfiler().push("entityBaseTick");
+ if (firstTick && this instanceof net.minecraft.world.entity.NeutralMob neutralMob) neutralMob.tickInitialPersistentAnger(level); // Paper - Prevent entity loading causing async lookups
this.feetBlockState = null;
if (this.isPassenger() && this.getVehicle().isRemoved()) {
this.stopRiding();
diff --git a/src/main/java/net/minecraft/world/entity/NeutralMob.java b/src/main/java/net/minecraft/world/entity/NeutralMob.java
index fa64c7baa7587f2cfe80b78ed83be011239618cf..47d5a0928f3c86d71f851738bfe7beedc98cfbb3 100644
--- a/src/main/java/net/minecraft/world/entity/NeutralMob.java
+++ b/src/main/java/net/minecraft/world/entity/NeutralMob.java
@@ -42,18 +42,11 @@ public interface NeutralMob {
UUID uuid = nbt.getUUID("AngryAt");
this.setPersistentAngerTarget(uuid);
- Entity entity = ((ServerLevel) world).getEntity(uuid);
-
- if (entity != null) {
- if (entity instanceof Mob) {
- this.setLastHurtByMob((Mob) entity);
- }
-
- if (entity.getType() == EntityType.PLAYER) {
- this.setLastHurtByPlayer((Player) entity);
- }
-
- }
+ // Paper - Prevent entity loading causing async lookups; Moved diff to separate method
+ // If this entity already survived its first tick, e.g. is loaded and ticked in sync, actively
+ // tick the initial persistent anger.
+ // If not, let the first tick on the baseTick call the method later down the line.
+ if (this instanceof Entity entity && !entity.firstTick) this.tickInitialPersistentAnger(world);
}
}
}
@@ -127,4 +120,27 @@ public interface NeutralMob {
@Nullable
LivingEntity getTarget();
+
+ // Paper start - Prevent entity loading causing async lookups
+ // Update last hurt when ticking
+ default void tickInitialPersistentAnger(Level level) {
+ UUID target = getPersistentAngerTarget();
+ if (target == null) {
+ return;
+ }
+
+ Entity entity = ((ServerLevel) level).getEntity(target);
+
+ if (entity != null) {
+ if (entity instanceof Mob) {
+ this.setLastHurtByMob((Mob) entity);
+ }
+
+ if (entity.getType() == EntityType.PLAYER) {
+ this.setLastHurtByPlayer((Player) entity);
+ }
+
+ }
+ }
+ // Paper end - Prevent entity loading causing async lookups
}