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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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673 changed files with 157 additions and 189 deletions
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patches/server/0869-Refresh-ProjectileSource-for-projectiles.patch Normal file
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@ -0,0 +1,85 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Tue, 30 May 2023 12:59:10 -0700
Subject: [PATCH] Refresh ProjectileSource for projectiles
Makes sure the value returned by Projectile#getShooter in
the API matches the owner UUID specified in the entity nbt.
Previously, after the entity reloaded, Projectile#getShooter
would return null, while the entity still had an owner.
Also fixes setting the shooter/owner to null actually
clearing the owner.
Co-authored-by: Warrior <50800980+Warriorrrr@users.noreply.github.com>
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index d24c2e23a12a196e1f6dc4f5c6d3c69472ddc704..c173ecd1283331afcf4db010e65764e5ed6e1eff 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -384,6 +384,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
public boolean inWorld = false;
public boolean generation;
public int maxAirTicks = this.getDefaultMaxAirSupply(); // CraftBukkit - SPIGOT-6907: re-implement LivingEntity#setMaximumAir()
+ @Nullable // Paper - Refresh ProjectileSource for projectiles
public org.bukkit.projectiles.ProjectileSource projectileSource; // For projectiles only
public boolean lastDamageCancelled; // SPIGOT-5339, SPIGOT-6252, SPIGOT-6777: Keep track if the event was canceled
public boolean persistentInvisibility = false;
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 0a207f3f2e4c0790e784fb4b0c3c2dfa49c39724..156809090f1f83ad68e7e2477a3cfddac5757a8e 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
@@ -50,14 +50,31 @@ public abstract class Projectile extends Entity implements TraceableEntity {
this.ownerUUID = entity.getUUID();
this.cachedOwner = entity;
}
- this.projectileSource = (entity != null && entity.getBukkitEntity() instanceof ProjectileSource) ? (ProjectileSource) entity.getBukkitEntity() : null; // CraftBukkit
-
+ // Paper start - Refresh ProjectileSource for projectiles
+ else {
+ this.ownerUUID = null;
+ this.cachedOwner = null;
+ this.projectileSource = null;
+ }
+ // Paper end - Refresh ProjectileSource for projectiles
+ this.refreshProjectileSource(false); // Paper
+ }
+ // Paper start - Refresh ProjectileSource for projectiles
+ public void refreshProjectileSource(boolean fillCache) {
+ if (fillCache) {
+ this.getOwner();
+ }
+ if (this.cachedOwner != null && !this.cachedOwner.isRemoved() && this.projectileSource == null && this.cachedOwner.getBukkitEntity() instanceof ProjectileSource projSource) {
+ this.projectileSource = projSource;
+ }
}
+ // Paper end - Refresh ProjectileSource for projectiles
@Nullable
@Override
public Entity getOwner() {
if (this.cachedOwner != null && !this.cachedOwner.isRemoved()) {
+ this.refreshProjectileSource(false); // Paper - Refresh ProjectileSource for projectiles
return this.cachedOwner;
} else {
if (this.ownerUUID != null) {
@@ -67,6 +84,7 @@ public abstract class Projectile extends Entity implements TraceableEntity {
ServerLevel worldserver = (ServerLevel) world;
this.cachedOwner = worldserver.getEntity(this.ownerUUID);
+ this.refreshProjectileSource(false); // Paper - Refresh ProjectileSource for projectiles
return this.cachedOwner;
}
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java b/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java
index c1c52f4fc5f900fac4098e5e37c52dfc4e82b8bb..236f94348ff8da661e23e3e17b7fc1b143680da9 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java
@@ -60,6 +60,7 @@ public abstract class AbstractProjectile extends CraftEntity implements Projecti
@Override
public final org.bukkit.projectiles.ProjectileSource getShooter() {
+ this.getHandle().refreshProjectileSource(true); // Paper - Refresh ProjectileSource for projectiles
return this.getHandle().projectileSource;
}