PaperMC/patches/server/0505-Do-not-let-the-server-load-chunks-from-newer-version.patch
Jason bc127ea819
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#6222)
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:
eec4aab0 SPIGOT-6657: Add getPlayer to SheepDyeWoolEvent
205213c6 SPIGOT-6656: CauldronLevelChangeEvent is not fired correctly when dripstone fills the cauldron

CraftBukkit Changes:
b8c522d5 SPIGOT-6657: Add getPlayer to SheepDyeWoolEvent
f04a77dc SPIGOT-6656: CauldronLevelChangeEvent is not fired correctly when dripstone fills the cauldron
d1dbcebc SPIGOT-6653: Canceling snow bucket placement removes snow from bucket
4f34a67b #891: Fix scheduler task ID overflow and duplication issues

Spigot Changes:
d03d7f12 BUILDTOOLS-604: Rebuild patches
2021-07-18 09:41:53 +02:00

40 lines
2.5 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach@zachbr.io>
Date: Tue, 23 Jul 2019 20:44:47 -0500
Subject: [PATCH] Do not let the server load chunks from newer versions
If the server attempts to load a chunk generated by a newer version of
the game, immediately stop the server to prevent data corruption.
You can override this functionality at your own peril.
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
index f4cecd000ba4c4595c8db45524ec9d899193abe6..9ee2321150d3de7bf1a11c212951bc69872f4dd8 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
@@ -98,10 +98,25 @@ public class ChunkSerializer {
holder.tasks.forEach(Runnable::run);
return holder.protoChunk;
}
+
+ // Paper start
+ private static final int CURRENT_DATA_VERSION = SharedConstants.getCurrentVersion().getWorldVersion();
+ private static final boolean JUST_CORRUPT_IT = Boolean.getBoolean("Paper.ignoreWorldDataVersion");
+ // Paper end
+
public static InProgressChunkHolder loadChunk(ServerLevel world, StructureManager structureManager, PoiManager poiStorage, ChunkPos pos, CompoundTag nbt, boolean distinguish) {
java.util.ArrayDeque<Runnable> tasksToExecuteOnMain = new java.util.ArrayDeque<>();
// Paper end
ChunkGenerator chunkgenerator = world.getChunkSource().getGenerator();
+ // Paper start - Do NOT attempt to load chunks saved with newer versions
+ if (nbt.contains("DataVersion", 99)) {
+ int dataVersion = nbt.getInt("DataVersion");
+ if (!JUST_CORRUPT_IT && dataVersion > CURRENT_DATA_VERSION) {
+ new RuntimeException("Server attempted to load chunk saved with newer version of minecraft! " + dataVersion + " > " + CURRENT_DATA_VERSION).printStackTrace();
+ System.exit(1);
+ }
+ }
+ // Paper end
BiomeSource worldchunkmanager = chunkgenerator.getBiomeSource();
CompoundTag nbttagcompound1 = nbt.getCompound("Level"); // Paper - diff on change, see ChunkSerializer#getChunkCoordinate
ChunkPos chunkcoordintpair1 = new ChunkPos(nbttagcompound1.getInt("xPos"), nbttagcompound1.getInt("zPos")); // Paper - diff on change, see ChunkSerializer#getChunkCoordinate