mirror of https://github.com/PaperMC/Paper.git
52 lines
3.5 KiB
Diff
52 lines
3.5 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/world/level/chunk/storage/ChunkSerializer.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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index cc1d7626a82881c4410d65c6a33dadae7ab07172..5ef782ef14a9a880cb3db433bbee2d4a70d33718 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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@@ -86,8 +86,20 @@ public class ChunkSerializer {
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public ChunkSerializer() {}
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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 ChunkPos getChunkCoordinate(final CompoundTag chunkData) {
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+ final int dataVersion = ChunkStorage.getVersion(chunkData);
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+ if (dataVersion < 2842) { // Level tag is removed after this version
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+ final CompoundTag levelData = chunkData.getCompound("Level");
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+ return new ChunkPos(levelData.getInt("xPos"), levelData.getInt("zPos"));
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+ } else {
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+ return new ChunkPos(chunkData.getInt("xPos"), chunkData.getInt("zPos"));
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+ }
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+ }
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+ // Paper end - guard against serializing mismatching coordinates
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public static ProtoChunk read(ServerLevel world, PoiManager poiStorage, ChunkPos chunkPos, CompoundTag nbt) {
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- ChunkPos chunkcoordintpair1 = new ChunkPos(nbt.getInt("xPos"), nbt.getInt("zPos"));
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+ ChunkPos chunkcoordintpair1 = new ChunkPos(nbt.getInt("xPos"), nbt.getInt("zPos")); // Paper - guard against serializing mismatching coordinates; diff on change, see ChunkSerializer#getChunkCoordinate
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if (!Objects.equals(chunkPos, chunkcoordintpair1)) {
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ChunkSerializer.LOGGER.error("Chunk file at {} is in the wrong location; relocating. (Expected {}, got {})", new Object[]{chunkPos, chunkPos, chunkcoordintpair1});
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diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
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index 25623dcd44edc475c5dce2756bf99fc18e142b63..eaf978d15618b80d23c443acbd42db926d570d01 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkStorage.java
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@@ -157,6 +157,13 @@ public class ChunkStorage implements AutoCloseable {
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}
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public void write(ChunkPos chunkPos, CompoundTag nbt) {
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+ // Paper start - guard against serializing mismatching coordinates
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+ if (nbt != null && !chunkPos.equals(ChunkSerializer.getChunkCoordinate(nbt))) {
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+ final String world = (this instanceof net.minecraft.server.level.ChunkMap) ? ((net.minecraft.server.level.ChunkMap) this).level.getWorld().getName() : null;
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+ throw new IllegalArgumentException("Chunk coordinate and serialized data do not have matching coordinates, trying to serialize coordinate " + chunkPos
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+ + " but compound says coordinate is " + ChunkSerializer.getChunkCoordinate(nbt) + (world == null ? " for an unknown world" : (" for world: " + world)));
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+ }
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+ // Paper end - guard against serializing mismatching coordinates
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this.worker.store(chunkPos, nbt);
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if (this.legacyStructureHandler != null) {
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this.legacyStructureHandler.removeIndex(chunkPos.toLong());
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