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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/0945-Fix-missing-map-initialize-event-call.patch Normal file
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@ -0,0 +1,44 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Warrior <50800980+Warriorrrr@users.noreply.github.com>
Date: Sun, 24 Sep 2023 18:35:28 +0200
Subject: [PATCH] Fix missing map initialize event call
== AT ==
public net.minecraft.world.level.storage.DimensionDataStorage readSavedData(Ljava/util/function/Function;Lnet/minecraft/util/datafix/DataFixTypes;Ljava/lang/String;)Lnet/minecraft/world/level/saveddata/SavedData;
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index a6af6585aca50033f45138a4408218b056b8b785..8235dace0f4a1090dfbd403db34231ccafe5f30e 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -1657,13 +1657,25 @@ public class ServerLevel extends Level implements WorldGenLevel {
@Nullable
@Override
public MapItemSavedData getMapData(String id) {
- // CraftBukkit start
- MapItemSavedData worldmap = (MapItemSavedData) this.getServer().overworld().getDataStorage().get(MapItemSavedData.factory(), id);
- if (worldmap != null) {
- worldmap.id = id;
+ // Paper start - Call missing map initialize event and set id
+ final DimensionDataStorage storage = this.getServer().overworld().getDataStorage();
+
+ final net.minecraft.world.level.saveddata.SavedData existing = storage.cache.get(id);
+ if (existing == null && !storage.cache.containsKey(id)) {
+ final net.minecraft.world.level.saveddata.SavedData.Factory<MapItemSavedData> factory = MapItemSavedData.factory();
+ final MapItemSavedData map = storage.readSavedData(factory.deserializer(), factory.type(), id);
+ storage.cache.put(id, map);
+ if (map != null) {
+ map.id = id;
+ new MapInitializeEvent(map.mapView).callEvent();
+ return map;
+ }
+ } else if (existing instanceof MapItemSavedData mapItemSavedData) {
+ mapItemSavedData.id = id;
}
- return worldmap;
- // CraftBukkit end
+
+ return existing instanceof MapItemSavedData data ? data : null;
+ // Paper end - Call missing map initialize event and set id
}
@Override