From 941daa1645ffc134ba8d7466f0ac50caa2d5c9d3 Mon Sep 17 00:00:00 2001
From: Miroslav Stampar <miroslav.stampar@gmail.com>
Date: Mon, 11 Apr 2011 11:59:02 +0000
Subject: [PATCH] just in case to prevent "object of type 'NoneType' has no
 len()" error reports

---
 lib/core/settings.py           | 3 +++
 plugins/generic/enumeration.py | 3 ++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/core/settings.py b/lib/core/settings.py
index a0d36c067..7d4018346 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -298,3 +298,6 @@ DEFAULT_MSSQL_SCHEMA = 'dbo'
 
 # display hash attack info every mod number of items
 HASH_MOD_ITEM_DISPLAY = 1117
+
+# maximum integer value
+MAX_INT = sys.maxint
diff --git a/plugins/generic/enumeration.py b/plugins/generic/enumeration.py
index a0feb81cd..e7de91d7e 100644
--- a/plugins/generic/enumeration.py
+++ b/plugins/generic/enumeration.py
@@ -55,6 +55,7 @@ from lib.core.session import setOs
 from lib.core.settings import CONCAT_ROW_DELIMITER
 from lib.core.settings import CONCAT_VALUE_DELIMITER
 from lib.core.settings import DEFAULT_MSSQL_SCHEMA
+from lib.core.settings import MAX_INT
 from lib.core.settings import SQL_STATEMENTS
 from lib.core.shell import autoCompletion
 from lib.core.unescaper import unescaper
@@ -1137,7 +1138,7 @@ class Enumeration:
             else:
                 count = inject.getValue(query, blind=False)
 
-        colList = sorted(colList, key=lambda x: len(x))
+        colList = sorted(colList, key=lambda x: len(x) if x else MAX_INT)
 
         for column in colList:
             infoMsg = "fetching number of distinct "