# Path: twimp/auth/error.py
# class AuthProtocolContractError(LoginFailed):
#     """Received unexpected response while trying to authenticate."""


from urlparse import parse_qsl
from twisted.cred.error import Unauthorized, UnauthorizedLogin
from twimp.auth.error import AuthProtocolContractError
def parse_description_string(desc, authmod=None):
    base, opts = None, None

    for rpart in desc.split(':'):
        part = rpart.strip(' []')
        if 'authmod=' in part:
            kvs = dict(v.strip().split('=', 1) for v in part.split(';'))
            if not authmod or kvs.get('authmod') == authmod:
                base = kvs
        elif part.startswith('?'):
            opts = parse_url_args(part)

    return base, opts


class Credentials(object):
    invalid = True


class Authenticator(object):
    authmod = None

    def __init__(self, authmod=None):
        self.authmod = authmod

    def unhandled_code(self, code_str, cred, challenge):
        raise AuthProtocolContractError('unknown code in challenge: %r',
                                        (challenge,))

    def unhandled_reason(self, reason, cred, challenge):

# Path: twimp/auth/error.py
# class AuthProtocolContractError(LoginFailed):
#     """Received unexpected response while trying to authenticate."""


# Path: twimp/auth/base.py
from urlparse import parse_qsl
from twisted.cred.error import Unauthorized, UnauthorizedLogin
from twimp.auth.error import AuthProtocolContractError

def parse_description_string(desc, authmod=None):
    base, opts = None, None

    for rpart in desc.split(':'):
        part = rpart.strip(' []')
        if 'authmod=' in part:
            kvs = dict(v.strip().split('=', 1) for v in part.split(';'))
            if not authmod or kvs.get('authmod') == authmod:
                base = kvs
        elif part.startswith('?'):
            opts = parse_url_args(part)

    return base, opts


class Credentials(object):
    invalid = True


class Authenticator(object):
    authmod = None

    def __init__(self, authmod=None):
        self.authmod = authmod

    def unhandled_code(self, code_str, cred, challenge):
        raise AuthProtocolContractError('unknown code in challenge: %r',
                                        (challenge,))

    def unhandled_reason(self, reason, cred, challenge):

        raise AuthProtocolContractError('unknown reason in challenge: %r',