use saveUrl

criterion/cache.py

@@ -19,12 +19,7 @@ def getPoster(id, url=None):
         if not url:
             data = oxweb.criterion.getData(id)
             url = data['posterUrl']
-        if not os.path.exists(dirname):
-            os.makedirs(dirname)
-        data = oxlib.net.getUrl(url)
-        f = open(filename, 'w')
-        f.write(data)
-        f.close()
+        oxlib.net.saveUrl(url, filename)
     return filename
 
 def archivePosters(init=False):