papermc/CraftBukkit-Patches/0072-Catch-stalling-on-corrupted-map-data-NBT-arrays.patch

From ec1f9295415c99a03bde0e1d5d41221d2d8ab6db Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Mon, 20 Jan 2014 13:44:07 +1100
Subject: [PATCH] Catch stalling on corrupted map data / NBT arrays.


diff --git a/src/main/java/net/minecraft/server/NBTTagByteArray.java b/src/main/java/net/minecraft/server/NBTTagByteArray.java
index 3eeed3e..4e9b714 100644
--- a/src/main/java/net/minecraft/server/NBTTagByteArray.java
+++ b/src/main/java/net/minecraft/server/NBTTagByteArray.java
@@ -22,6 +22,7 @@ public class NBTTagByteArray extends NBTBase {
 
     void load(DataInput datainput, int i, NBTReadLimiter nbtreadlimiter) throws IOException {
         int j = datainput.readInt();
+       com.google.common.base.Preconditions.checkArgument( j < 1 << 24);
 
         nbtreadlimiter.a((long) (8 * j));
         this.data = new byte[j];
diff --git a/src/main/java/net/minecraft/server/NBTTagIntArray.java b/src/main/java/net/minecraft/server/NBTTagIntArray.java
index 63c3bf9..1ff0902 100644
--- a/src/main/java/net/minecraft/server/NBTTagIntArray.java
+++ b/src/main/java/net/minecraft/server/NBTTagIntArray.java
@@ -26,6 +26,7 @@ public class NBTTagIntArray extends NBTBase {
 
     void load(DataInput datainput, int i, NBTReadLimiter nbtreadlimiter) throws IOException {
         int j = datainput.readInt();
+       com.google.common.base.Preconditions.checkArgument( j < 1 << 24);
 
         nbtreadlimiter.a((long) (32 * j));
         this.data = new int[j];
-- 
2.1.0