adding exception handling for corrupt images

Vbitz · Nov 19, 2012 · bbbc437 · bbbc437
1 parent bd858c6
commit bbbc437
Showing 3 changed files with 28 additions and 18 deletions.
diff --git a/images/broken.png b/images/broken.png
diff --git a/png-node.coffee b/png-node.coffee
@@ -113,6 +113,9 @@ module.exports = class PNG
 
             @pos += 4 # Skip the CRC
 
+            if @pos > @data.length
+                throw new Error "Incomplete or corrupt PNG file"
+
         return
 
     read: (bytes) ->

diff --git a/png-node.js b/png-node.js