Paper/patches/server/0190-Block-Enderpearl-Travel-Exploit.patch
Jake Potrebic 2f92d4e00e
Updated Upstream (Bukkit/CraftBukkit)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
01bb6ba7 PR-936: Add new PersistentDataContainer methods and clean up docs
bc145b90 PR-940: Create registry for banner pattern and cat type

CraftBukkit Changes:
cb2ea54de SPIGOT-7440, PR-1292: Fire EntityTeleportEvent for end gateways
4fea66e44 PR-1299: Add new PersistentDataContainer methods and clean up docs
b483a20db PR-1303: Create registry for banner pattern and cat type
4642dd526 SPIGOT-7535: Fix maps not having an ID and also call MapInitializeEvent in more places
2023-12-08 11:00:39 -08:00

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2.5 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 30 Apr 2018 17:15:26 -0400
Subject: [PATCH] Block Enderpearl Travel Exploit
Players are able to use alt accounts and enderpearls to travel
long distances utilizing the pearls in unloaded chunks and loading
the chunk later when convenient.
This disables that by not saving the thrower when the chunk is unloaded.
This is mainly useful for survival servers that do not allow freeform teleporting.
== AT ==
public net.minecraft.world.entity.projectile.Projectile cachedOwner
public net.minecraft.world.entity.projectile.Projectile ownerUUID
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index cc3a34afddac429b1ce75e54fdb284d7683a4310..418f9ed95179a234a4f7df3ba5813e9642b5f44c 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -2364,6 +2364,12 @@ public class ServerLevel extends Level implements WorldGenLevel {
public void onTickingEnd(Entity entity) {
ServerLevel.this.entityTickList.remove(entity);
+ // Paper start - Reset pearls when they stop being ticked
+ if (paperConfig().fixes.disableUnloadedChunkEnderpearlExploit && entity instanceof net.minecraft.world.entity.projectile.ThrownEnderpearl pearl) {
+ pearl.cachedOwner = null;
+ pearl.ownerUUID = null;
+ }
+ // Paper end
}
public void onTrackingStart(Entity entity) {
diff --git a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
index fbbb1fa3d5f4ace67fee96aa235cec3b39deb7b1..e8620ad6be2dda7fe288f884c4ae88a924be4a62 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
@@ -101,6 +101,7 @@ public abstract class Projectile extends Entity implements TraceableEntity {
if (nbt.hasUUID("Owner")) {
this.ownerUUID = nbt.getUUID("Owner");
this.cachedOwner = null;
+ if (this instanceof ThrownEnderpearl && this.level() != null && this.level().paperConfig().fixes.disableUnloadedChunkEnderpearlExploit) { this.ownerUUID = null; } // Paper - Don't store shooter name for pearls to block enderpearl travel exploit
}
this.leftOwner = nbt.getBoolean("LeftOwner");