Paper/CraftBukkit-Patches/0136-Apply-NBTReadLimiter-to-more-things.patch

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From 828f70cff22e47607ef0d152f4f6c46bbc71230c Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Sun, 27 Jul 2014 20:46:04 +1000
Subject: [PATCH] Apply NBTReadLimiter to more things.
diff --git a/src/main/java/net/minecraft/server/NBTCompressedStreamTools.java b/src/main/java/net/minecraft/server/NBTCompressedStreamTools.java
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index 2a04b86..b2d5254 100644
--- a/src/main/java/net/minecraft/server/NBTCompressedStreamTools.java
+++ b/src/main/java/net/minecraft/server/NBTCompressedStreamTools.java
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@@ -44,6 +44,12 @@ public class NBTCompressedStreamTools {
}
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public static NBTTagCompound a(DataInput datainput, NBTReadLimiter nbtreadlimiter) throws IOException {
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+ // Spigot start
+ if ( datainput instanceof io.netty.buffer.ByteBufInputStream )
+ {
+ datainput = new DataInputStream(new org.spigotmc.LimitStream((InputStream) datainput, nbtreadlimiter));
+ }
+ // Spigot end
NBTBase nbtbase = a(datainput, 0, nbtreadlimiter);
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if (nbtbase instanceof NBTTagCompound) {
diff --git a/src/main/java/org/spigotmc/LimitStream.java b/src/main/java/org/spigotmc/LimitStream.java
new file mode 100644
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index 0000000..8c32e8b
--- /dev/null
+++ b/src/main/java/org/spigotmc/LimitStream.java
@@ -0,0 +1,39 @@
+package org.spigotmc;
+
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import net.minecraft.server.NBTReadLimiter;
+
+public class LimitStream extends FilterInputStream
+{
+
+ private final NBTReadLimiter limit;
+
+ public LimitStream(InputStream is, NBTReadLimiter limit)
+ {
+ super( is );
+ this.limit = limit;
+ }
+
+ @Override
+ public int read() throws IOException
+ {
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+ limit.a( 8 );
+ return super.read();
+ }
+
+ @Override
+ public int read(byte[] b) throws IOException
+ {
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+ limit.a( b.length * 8 );
+ return super.read( b );
+ }
+
+ @Override
+ public int read(byte[] b, int off, int len) throws IOException
+ {
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+ limit.a( len * 8 );
+ return super.read( b, off, len );
+ }
+}
--
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2.1.4