From 938f9bd53381bef8e8d9760e371ccb5618ef1a81 Mon Sep 17 00:00:00 2001
From: lgandx <lgandx@github.com>
Date: Thu, 26 Dec 2013 10:28:45 -0500
Subject: [PATCH] minor fix

---
 Responder.py | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/Responder.py b/Responder.py
index f886f24..8059378 100644
--- a/Responder.py
+++ b/Responder.py
@@ -240,13 +240,16 @@ def Validate_NBT_NS(data,Wredirect):
 
 def Decode_Name(nbname):
     #From http://code.google.com/p/dpkt/ with author's permission.
-    if len(nbname) != 32:
-        return nbname
-    l = []
-    for i in range(0, 32, 2):
-        l.append(chr(((ord(nbname[i]) - 0x41) << 4) |
+    try:
+       if len(nbname) != 32:
+          return nbname
+       l = []
+       for i in range(0, 32, 2):
+          l.append(chr(((ord(nbname[i]) - 0x41) << 4) |
                      ((ord(nbname[i+1]) - 0x41) & 0xf)))
-    return ''.join(l).split('\x00', 1)[0].strip()
+       return ''.join(l).split('\x00', 1)[0].strip()
+    except:
+       return "Illegal NetBIOS name"
 
 # NBT_NS Server class.
 class NB(BaseRequestHandler):
@@ -1611,3 +1614,4 @@ if __name__ == '__main__':
         raise
     raw_input()
 
+