55 lines
3.8 KiB
Diff
55 lines
3.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Fri, 27 Dec 2019 09:42:26 -0800
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Subject: [PATCH] Guard against serializing mismatching chunk coordinate
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Should help if something dumb happens
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diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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index 4d6e8f987233ca6c5f53d004031c022bb2d43e1e..5b196201c0e35895a04e2a542ef7c753d0c469e1 100644
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--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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@@ -24,6 +24,13 @@ public class ChunkRegionLoader {
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private static final Logger LOGGER = LogManager.getLogger();
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+ // Paper start - guard against serializing mismatching coordinates
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+ // TODO Note: This needs to be re-checked each update
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+ public static ChunkCoordIntPair getChunkCoordinate(NBTTagCompound chunkData) {
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+ NBTTagCompound levelData = chunkData.getCompound("Level");
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+ return new ChunkCoordIntPair(levelData.getInt("xPos"), levelData.getInt("zPos"));
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+ }
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+ // Paper end
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// Paper start
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public static final class InProgressChunkHolder {
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@@ -49,8 +56,8 @@ public class ChunkRegionLoader {
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// Paper end
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ChunkGenerator chunkgenerator = worldserver.getChunkProvider().getChunkGenerator();
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WorldChunkManager worldchunkmanager = chunkgenerator.getWorldChunkManager();
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- NBTTagCompound nbttagcompound1 = nbttagcompound.getCompound("Level");
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- ChunkCoordIntPair chunkcoordintpair1 = new ChunkCoordIntPair(nbttagcompound1.getInt("xPos"), nbttagcompound1.getInt("zPos"));
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+ NBTTagCompound nbttagcompound1 = nbttagcompound.getCompound("Level"); // Paper - diff on change, see ChunkRegionLoader#getChunkCoordinate
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+ ChunkCoordIntPair chunkcoordintpair1 = new ChunkCoordIntPair(nbttagcompound1.getInt("xPos"), nbttagcompound1.getInt("zPos")); // Paper - diff on change, see ChunkRegionLoader#getChunkCoordinate
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if (!Objects.equals(chunkcoordintpair, chunkcoordintpair1)) {
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ChunkRegionLoader.LOGGER.error("Chunk file at {} is in the wrong location; relocating. (Expected {}, got {})", chunkcoordintpair, chunkcoordintpair, chunkcoordintpair1);
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diff --git a/src/main/java/net/minecraft/server/IChunkLoader.java b/src/main/java/net/minecraft/server/IChunkLoader.java
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index c0d2df8ef3b4d0224ede2b7a4ef4e3f930590209..582a5695bac7d078e3022b8ee70c512c0680d992 100644
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--- a/src/main/java/net/minecraft/server/IChunkLoader.java
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+++ b/src/main/java/net/minecraft/server/IChunkLoader.java
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@@ -106,6 +106,13 @@ public class IChunkLoader implements AutoCloseable {
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public void a(ChunkCoordIntPair chunkcoordintpair, NBTTagCompound nbttagcompound) throws IOException { write(chunkcoordintpair, nbttagcompound); } // Paper OBFHELPER
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public void write(ChunkCoordIntPair chunkcoordintpair, NBTTagCompound nbttagcompound) throws IOException { // Paper - OBFHELPER - (Switched around for safety)
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+ // Paper start
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+ if (!chunkcoordintpair.equals(ChunkRegionLoader.getChunkCoordinate(nbttagcompound))) {
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+ String world = (this instanceof PlayerChunkMap) ? ((PlayerChunkMap)this).world.getWorld().getName() : null;
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+ throw new IllegalArgumentException("Chunk coordinate and serialized data do not have matching coordinates, trying to serialize coordinate " + chunkcoordintpair.toString()
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+ + " but compound says coordinate is " + ChunkRegionLoader.getChunkCoordinate(nbttagcompound).toString() + (world == null ? " for an unknown world" : (" for world: " + world)));
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+ }
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+ // Paper end
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this.regionFileCache.write(chunkcoordintpair, nbttagcompound);
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if (this.c != null) {
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synchronized (this.persistentDataLock) { // Paper - Async chunk loading
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