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fix crash on invalid NBT during itemstack decoding

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This commit is contained in:
Dylan K. Taylor 2019-05-30 09:53:20 +01:00
parent 3d8cd54f16
commit ece4d99c1e
1 changed files with 6 additions and 1 deletions
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7
src/pocketmine/network/mcpe/NetworkBinaryStream.php
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@ -31,6 +31,7 @@ use pocketmine\item\ItemFactory;
use pocketmine\item\ItemIds;
use pocketmine\math\Vector3;
use pocketmine\nbt\tag\CompoundTag;
use pocketmine\nbt\NbtDataException;
use pocketmine\nbt\TreeRoot;
use pocketmine\network\BadPacketException;
use pocketmine\network\mcpe\protocol\types\CommandOriginData;
@ -105,7 +106,11 @@ class NetworkBinaryStream extends BinaryStream{
if($c !== 1){
throw new BadPacketException("Unexpected NBT count $c");
}
$compound = (new NetworkNbtSerializer())->read($this->buffer, $this->offset, 512)->getTag();
try{
$compound = (new NetworkNbtSerializer())->read($this->buffer, $this->offset, 512)->getTag();
}catch(NbtDataException $e){
throw new BadPacketException($e->getMessage(), 0, $e);
}
}elseif($nbtLen !== 0){
throw new BadPacketException("Unexpected fake NBT length $nbtLen");
}