66 lines
1.9 KiB
Python
66 lines
1.9 KiB
Python
########################################################################
|
|
# File name: anonymous.py
|
|
# This file is part of: aiosasl
|
|
#
|
|
# LICENSE
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Lesser General Public License as
|
|
# published by the Free Software Foundation, either version 3 of the
|
|
# License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful, but
|
|
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this program. If not, see
|
|
# <http://www.gnu.org/licenses/>.
|
|
#
|
|
########################################################################
|
|
import logging
|
|
import typing
|
|
|
|
from . import common, statemachine, stringprep
|
|
|
|
|
|
logger = logging.getLogger()
|
|
|
|
|
|
class ANONYMOUS(statemachine.SASLMechanism):
|
|
"""
|
|
The ANONYMOUS SASL mechanism (see :rfc:`4505`).
|
|
|
|
.. versionadded:: 0.3
|
|
"""
|
|
|
|
def __init__(self, token: str) -> None:
|
|
super().__init__()
|
|
self._token = stringprep.trace(token).encode("utf-8")
|
|
|
|
@classmethod
|
|
def any_supported(
|
|
self,
|
|
mechanisms: typing.Iterable[str],
|
|
) -> typing.Optional[str]:
|
|
if "ANONYMOUS" in mechanisms:
|
|
return "ANONYMOUS"
|
|
return None
|
|
|
|
async def authenticate(
|
|
self,
|
|
sm: statemachine.SASLStateMachine,
|
|
mechanism: typing.Any) -> None:
|
|
logger.info("attempting ANONYMOUS mechanism")
|
|
|
|
state, _ = await sm.initiate(
|
|
mechanism="ANONYMOUS",
|
|
payload=self._token
|
|
)
|
|
|
|
if state != common.SASLState.SUCCESS:
|
|
raise common.SASLFailure(
|
|
None,
|
|
text="SASL protocol violation")
|