From 3adc8d919ec06e3d58d141b0342bfb0575077221 Mon Sep 17 00:00:00 2001
From: Moritz Zwerger <bixilon@bixilon.de>
Date: Sat, 28 Oct 2023 23:01:58 +0200
Subject: [PATCH] network: forbid packets with length <= 0

---
 .../network/client/netty/pipeline/length/LengthDecoder.kt     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/de/bixilon/minosoft/protocol/network/network/client/netty/pipeline/length/LengthDecoder.kt b/src/main/java/de/bixilon/minosoft/protocol/network/network/client/netty/pipeline/length/LengthDecoder.kt
index c84fdbdf5..06d0159b0 100644
--- a/src/main/java/de/bixilon/minosoft/protocol/network/network/client/netty/pipeline/length/LengthDecoder.kt
+++ b/src/main/java/de/bixilon/minosoft/protocol/network/network/client/netty/pipeline/length/LengthDecoder.kt
@@ -1,6 +1,6 @@
 /*
  * Minosoft
- * Copyright (C) 2020-2022 Moritz Zwerger
+ * Copyright (C) 2020-2023 Moritz Zwerger
  *
  * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
  *
@@ -37,7 +37,7 @@ class LengthDecoder(
             return
         }
 
-        if (length > maxLength) {
+        if (length <= 0 || length > maxLength) {
             throw PacketTooLongException(length, maxLength)
         }