def build_digest_header(username, password, challenge_header, method, path,
nonce_count=1, cnonce=None):
challenge_data = parse_dict_header(challenge_header.replace('Digest ', ''))
realm = challenge_data['realm']
nonce = challenge_data['nonce']
qop = challenge_data['qop']
opaque = challenge_data['opaque']
def md5_utf8(x):
if isinstance(x, str):
x = x.encode('utf-8')
return hashlib.md5(x).hexdigest()
hash_utf8 = md5_utf8
KD = lambda s, d: hash_utf8("%s:%s" % (s, d))
A1 = '%s:%s:%s' % (username, realm, password)
A2 = '%s:%s' % (method, path)
ncvalue = '%08x' % nonce_count
if cnonce is None:
seed = str(nonce_count).encode('utf-8')
seed += nonce.encode('utf-8')
seed += time.ctime().encode('utf-8')
seed += os.urandom(8)
cnonce = (hashlib.sha1(seed).hexdigest()[:16])
noncebit = "%s:%s:%s:%s:%s" % (nonce, ncvalue, cnonce, qop, hash_utf8(A2))
respdig = KD(hash_utf8(A1), noncebit)
base = 'username="******", realm="%s", nonce="%s", uri="%s", '\
'response="%s", algorithm="MD5"'
base = base % (username, realm, nonce, path, respdig)
if opaque:
base += ', opaque="%s"' % opaque
if qop:
base += ', qop=auth, nc=%s, cnonce="%s"' % (ncvalue, cnonce)
return 'Digest %s' % base
def parse_authorization_header(self, auth_header):
if not auth_header.startswith('Digest '):
raise exceptions.ParseError('Header do not start with Digest')
auth_header = auth_header.replace('Digest ', '')
self.auth_header = parse_dict_header(auth_header)
def parse_authorization_header(self, auth_header):
if not auth_header.startswith('Digest '):
raise exceptions.ParseError('Header do not start with Digest')
auth_header = auth_header.replace('Digest ', '')
self.auth_header = parse_dict_header(auth_header)
