def __call__(self, environ, start_response):
auth = environ.get('HTTP_AUTHORIZATION')
if auth:
scheme, data = auth.split(None, 1)
assert scheme.lower() == 'basic'
username, password = data.decode('base64').split(':', 1)
# parse url
kw, req = parse(environ)
# use cork standard login way
self.login(environ, req, username=username, password=password)
environ['REMOTE_USER'] = username
del environ['HTTP_AUTHORIZATION']
return BaseFilter.__call__(self, environ, start_response)