PaperMC/Spigot-Server-Patches/0280-Detect-and-repair-corrupt-Region-Files.patch
Spottedleaf 7c640a1ae2 Updated Upstream (Bukkit/CraftBukkit/Spigot) (#2415)
* fixup patch and rebuild

* Updated Upstream (Bukkit/CraftBukkit/Spigot)

Upstream has released updates that appears 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:
bde198c9 SPIGOT-5246: PlayerQuitEvent.get/setQuitMessage() is incorrectly marked as NotNull
24ad5a79 SPIGOT-5240: Vector.angle not valid for angles very close to each other
a143db9a SPIGOT-5231: ShotAtAngle API for Fireworks
10db5c3d SPIGOT-5226: Update Javadoc of PlayerDeathEvent

CraftBukkit Changes:
1ec1b05e SPIGOT-5245: Unneeded cast to WorldNBTStorage in CraftWorld#getWorldFolder
e5e8eec2 SPIGOT-5241: setAttributeModifiers does not work on untouched stack
803eaa31 SPIGOT-5231: ShotAtAngle API for Fireworks
7881d2ae SPIGOT-5237: Horses, pigs do not drop their inventory
06efc9ec Don't accept connections until all plugins have enabled
da62a66a SPIGOT-5225: World handle isn't closed if world is unloaded without saving
104b3831 SPIGOT-5222: Cannot get Long values from Entity memory
f0b3fe43 SPIGOT-5220: Server CPU usage reaches 100% when stdin is null

Spigot Changes:
e5b1b5db SPIGOT-5235: Destroy expired area effect clouds / fireworks that are inactive
cbcc8e87 Make region files more reliable to write to
8887c5f4 Remove redundant late-bind option
dac29063 Rebuild patches

* Preserve old flush on save flag for reliable regionfiles

Originally this patch was in paper

* Fix some issues with the death event

- Entities potentially entering a glitched state to the client where
they appear to be falling over
- Donkeys losing their chest if the event was cancelled (only an
issue since the upstream merge)
- Some wither death logic running for an entity killed by a wither
2019-08-05 11:35:40 -05:00

115 lines
5 KiB
Diff

From a1683b33a2ec42ca595cd7182ffdf5b376c844be Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 11 Aug 2018 00:49:20 -0400
Subject: [PATCH] Detect and repair corrupt Region Files
If the file has partial data written but not the full 8192 bytes,
then the server will be unable to load that region file...
I don't know why mojang only checks for 4096, when anything less than 8192 is a crash.
But to be safe, it will attempt to back up the file.
diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
index 3aeac69c26..17648c1c04 100644
--- a/src/main/java/net/minecraft/server/RegionFile.java
+++ b/src/main/java/net/minecraft/server/RegionFile.java
@@ -27,13 +27,13 @@ public class RegionFile implements AutoCloseable {
// Spigot end
private static final byte[] a = new byte[4096];
private final RandomAccessFile b; private RandomAccessFile getDataFile() { return this.b; } // Paper - OBFHELPER // PAIL dataFile
- private final int[] c = new int[1024];
- private final int[] d = new int[1024];
+ private final int[] c = new int[1024]; private final int[] offsets = c; // Paper - OBFHELPER
+ private final int[] d = new int[1024]; private final int[] timestamps = d; // Paper - OBFHELPER
private final List<Boolean> e; // PAIL freeSectors
public RegionFile(File file) throws IOException {
this.b = new RandomAccessFile(file, "rw");
- if (this.b.length() < 4096L) {
+ if (this.b.length() < 8192L) { // Paper - headers should be 8192
this.b.write(RegionFile.a);
this.b.write(RegionFile.a);
}
@@ -83,7 +83,7 @@ public class RegionFile implements AutoCloseable {
this.b.seek(j * 4 + 4); // Go back to where we were
}
}
- if (k != 0 && (k >> 8) + (length) <= this.e.size()) {
+ if (k > 0 && (k >> 8) > 1 && (k >> 8) + (k & 255) <= this.e.size()) { // Paper >= 1 as 0/1 are the headers, and negative isnt valid
for (int l = 0; l < (length); ++l) {
// Spigot end
this.e.set((k >> 8) + l, false);
@@ -92,13 +92,14 @@ public class RegionFile implements AutoCloseable {
// Spigot start
else if (length > 0) {
org.bukkit.Bukkit.getLogger().log(java.util.logging.Level.WARNING, "Invalid chunk: ({0}, {1}) Offset: {2} Length: {3} runs off end file. {4}", new Object[]{j % 32, (int) (j / 32), k >> 8, length, file});
+ deleteChunk(j); // Paper
}
// Spigot end
}
for (j = 0; j < 1024; ++j) {
k = headerAsInts.get(); // Paper
- this.d[j] = k;
+ if (this.offsets[j] != 0) this.timestamps[j] = k; // Paper - don't set timestamp if it got 0'd above due to corruption
}
this.file = file; // Spigot
@@ -349,6 +350,53 @@ public class RegionFile implements AutoCloseable {
}
// Spigot end
+ // Paper start
+ public synchronized void deleteChunk(int j1) {
+ backup();
+ int k = offsets[j1];
+ int x = j1 & 1024;
+ int z = j1 >> 2;
+ int offset = (k >> 8);
+ int len = (k & 255);
+ String debug = "idx:" + + j1 + " - " + x + "," + z + " - offset: " + offset + " - len: " + len;
+ try {
+ timestamps[j1] = 0;
+ offsets[j1] = 0;
+ RandomAccessFile file = getDataFile();
+ file.seek(j1 * 4);
+ file.writeInt(0);
+ // clear the timestamp
+ file.seek(4096 + j1 * 4);
+ file.writeInt(0);
+ org.bukkit.Bukkit.getLogger().log(java.util.logging.Level.SEVERE, "Deleted corrupt chunk (" + debug + ") " + this.file.getAbsolutePath(), e);
+ } catch (IOException e) {
+
+ org.bukkit.Bukkit.getLogger().log(java.util.logging.Level.SEVERE, "Error deleting corrupt chunk (" + debug + ") " + this.file.getAbsolutePath(), e);
+ }
+ }
+ private boolean backedUp = false;
+ private synchronized void backup() {
+ if (backedUp) {
+ return;
+ }
+ backedUp = true;
+ java.text.DateFormat formatter = new java.text.SimpleDateFormat("yyyy-MM-dd");
+ java.util.Date today = new java.util.Date();
+ File corrupt = new File(file.getParentFile(), file.getName() + "." + formatter.format(today) + ".corrupt");
+ if (corrupt.exists()) {
+ return;
+ }
+ org.apache.logging.log4j.Logger logger = org.apache.logging.log4j.LogManager.getLogger();
+ logger.error("Region file " + file.getAbsolutePath() + " was corrupt. Backing up to " + corrupt.getAbsolutePath() + " and repairing");
+ try {
+ java.nio.file.Files.copy(file.toPath(), corrupt.toPath());
+
+ } catch (IOException e) {
+ logger.error("Error backing up corrupt file" + file.getAbsolutePath(), e);
+ }
+ }
+ // Paper end
+
class ChunkBuffer extends ByteArrayOutputStream {
private final ChunkCoordIntPair b;
--
2.22.0