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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/0511-Inline-shift-direction-fields.patch Normal file
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@ -0,0 +1,55 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Mon, 18 Jan 2021 20:45:25 -0500
Subject: [PATCH] Inline shift direction fields
Removes a layer of indirection for EnumDirection.getAdjacent(X|Y|Z)(), which is in the
critical section for much of the server, including the lighting engine.
diff --git a/src/main/java/net/minecraft/core/Direction.java b/src/main/java/net/minecraft/core/Direction.java
index 3abec6de94f0ef1d788320e33653c598887f17ca..073c717bb676b9e99aada00c349fb7eee91df1e7 100644
--- a/src/main/java/net/minecraft/core/Direction.java
+++ b/src/main/java/net/minecraft/core/Direction.java
@@ -52,6 +52,11 @@ public enum Direction implements StringRepresentable {
})).toArray((i) -> {
return new Direction[i];
});
+ // Paper start - Perf: Inline shift direction fields
+ private final int adjX;
+ private final int adjY;
+ private final int adjZ;
+ // Paper end - Perf: Inline shift direction fields
private Direction(int id, int idOpposite, int idHorizontal, String name, Direction.AxisDirection direction, Direction.Axis axis, Vec3i vector) {
this.data3d = id;
@@ -61,6 +66,11 @@ public enum Direction implements StringRepresentable {
this.axis = axis;
this.axisDirection = direction;
this.normal = vector;
+ // Paper start - Perf: Inline shift direction fields
+ this.adjX = vector.getX();
+ this.adjY = vector.getY();
+ this.adjZ = vector.getZ();
+ // Paper end - Perf: Inline shift direction fields
}
public static Direction[] orderedByNearest(Entity entity) {
@@ -348,15 +358,15 @@ public enum Direction implements StringRepresentable {
}
public int getStepX() {
- return this.normal.getX();
+ return this.adjX; // Paper - Perf: Inline shift direction fields
}
public int getStepY() {
- return this.normal.getY();
+ return this.adjY; // Paper - Perf: Inline shift direction fields
}
public int getStepZ() {
- return this.normal.getZ();
+ return this.adjZ; // Paper - Perf: Inline shift direction fields
}
public Vector3f step() {