mirror of https://github.com/PaperMC/Paper.git
98 lines
4.4 KiB
Diff
98 lines
4.4 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: Sun, 19 Dec 2021 09:13:41 -0800
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Subject: [PATCH] Only write chunk data to disk if it serializes without
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throwing
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This ensures at least a valid version of the chunk exists
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on disk, even if outdated
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diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
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index 9bae47f99336c377beb72c4b50b7f01cb4db15da..dcfe090c269d4cbcc2eb1b6f85392848bb34656c 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
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@@ -1004,6 +1004,9 @@ public class RegionFile implements AutoCloseable {
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}
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}
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+
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+ public static final int MAX_CHUNK_SIZE = 500 * 1024 * 1024; // Paper - don't write garbage data to disk if writing serialization fails
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+
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// Paper end
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private class ChunkBuffer extends ByteArrayOutputStream {
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@@ -1019,6 +1022,24 @@ public class RegionFile implements AutoCloseable {
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this.pos = chunkcoordintpair;
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}
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+ // Paper start - don't write garbage data to disk if writing serialization fails
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+ @Override
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+ public void write(final int b) {
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+ if (this.count > MAX_CHUNK_SIZE) {
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+ throw new RegionFileStorage.RegionFileSizeException("Region file too large: " + this.count);
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+ }
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+ super.write(b);
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+ }
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+
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+ @Override
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+ public void write(final byte[] b, final int off, final int len) {
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+ if (this.count + len > MAX_CHUNK_SIZE) {
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+ throw new RegionFileStorage.RegionFileSizeException("Region file too large: " + (this.count + len));
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+ }
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+ super.write(b, off, len);
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+ }
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+ // Paper end
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+
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public void close() throws IOException {
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ByteBuffer bytebuffer = ByteBuffer.wrap(this.buf, 0, this.count);
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diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
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index e71a451a6b385716cc46db7350b58b4192304547..8db3bcc63aeb23e5b50864ebea675acc75d184ff 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
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@@ -302,10 +302,17 @@ public class RegionFileStorage implements AutoCloseable {
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NbtIo.write(nbt, (DataOutput) dataoutputstream);
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regionfile.setStatus(pos.x, pos.z, ChunkSerializer.getStatus(nbt)); // Paper - cache status on disk
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regionfile.setOversized(pos.x, pos.z, false); // Paper - We don't do this anymore, mojang stores differently, but clear old meta flag if it exists to get rid of our own meta file once last oversized is gone
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+ dataoutputstream.close(); // Paper - only write if successful
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+ // Paper start - don't write garbage data to disk if writing serialization fails
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+ } catch (RegionFileSizeException e) {
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+ attempts = 5; // Don't retry
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+ regionfile.clear(pos);
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+ throw e;
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+ // Paper end - don't write garbage data to disk if writing serialization fails
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} catch (Throwable throwable) {
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if (dataoutputstream != null) {
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try {
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- dataoutputstream.close();
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+ //dataoutputstream.close(); // Paper - don't write garbage data to disk if writing serialization fails
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} catch (Throwable throwable1) {
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throwable.addSuppressed(throwable1);
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}
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@@ -313,10 +320,7 @@ public class RegionFileStorage implements AutoCloseable {
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throw throwable;
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}
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-
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- if (dataoutputstream != null) {
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- dataoutputstream.close();
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- }
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+ // Paper - move into try block to only write if successfully serialized
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}
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// Paper start
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return;
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@@ -362,4 +366,13 @@ public class RegionFileStorage implements AutoCloseable {
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}
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}
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+
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+ // Paper start
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+ public static final class RegionFileSizeException extends RuntimeException {
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+
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+ public RegionFileSizeException(String message) {
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+ super(message);
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+ }
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+ }
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+ // Paper end
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}
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