Parse an HTTP request Authorization header with Python

Question

I need to take a header like this:

 Authorization: Digest qop=\"chap\",
     realm=\"testrealm@host.com\",
     username=\"Foobear\",
     response=\"6629fae         


        

Answer 1

I would recommend finding a correct library for parsing http headers unfortunately I can't reacall any. :(

For a while check the snippet below (it should mostly work):

input= """
 Authorization: Digest qop="chap",
     realm="testrealm@host.com",
     username="Foob,ear",
     response="6629fae49393a05397450978507c4ef1",
     cnonce="5ccc069c403ebaf9f0171e9517f40e41"
"""

field, sep, value = input.partition(":")
if field.endswith('Authorization'):
   protocol, sep, opts_str = value.strip().partition(" ")

   opts = {}
   for opt in opts_str.split(",\n"):
        key, value = opt.strip().split('=')
        key = key.strip(" ")
        value = value.strip(' "')
        opts[key] = value

   opts['protocol'] = protocol

   print opts