Protect against empty arrays

LunaMultiplayer · Oct 19, 2018 · 2a9a98e · 2a9a98e
1 parent 4f42bca
commit 2a9a98e
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/CachedQuickLz/CachedQlzCommon.cs b/CachedQuickLz/CachedQlzCommon.cs
@@ -38,6 +38,9 @@ public static int SizeCompressed(byte[] source)
         /// <returns>If the array is compressed with QuickLz or not</returns>
         public static bool IsCompressed(byte[] source, int length)
         {
+            if (source == null || source.Length < QlzConstants.QlzTrailLength || length < QlzConstants.QlzTrailLength)
+                return false;
+
             var trailEquals = true;
             for (var i = length - 1; i > length - QlzConstants.QlzTrailLength; i--)
             {