You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

128 lines
4.1 KiB
Python

5 years ago
# -*- coding: utf-8 -*-
# Copyright 2020 The Matrix.org Foundation C.I.C.
5 years ago
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import random
import string
import time
from typing import Tuple
import attr
import saml2.response
5 years ago
import synapse.module_api
from synapse.module_api.errors import RedirectException
from matrix_synapse_saml_mozilla._sessions import (
UsernameMappingSession,
username_mapping_sessions,
expire_old_sessions,
SESSION_COOKIE_NAME,
)
logger = logging.getLogger(__name__)
MAPPING_SESSION_VALIDITY_PERIOD_MS = 15 * 60 * 1000
5 years ago
@attr.s
class SamlConfig(object):
pass
class SamlMappingProvider(object):
def __init__(
self, parsed_config: SamlConfig, module_api: synapse.module_api.ModuleApi
):
"""A Mozilla-flavoured, Synapse user mapping provider
Args:
parsed_config: A configuration object. The result of self.parse_config
"""
self._random = random.SystemRandom()
5 years ago
def saml_response_to_user_attributes(
self,
saml_response: saml2.response.AuthnResponse,
failures: int,
client_redirect_url: str,
) -> dict:
"""Maps some text from a SAML response to attributes of a new user
5 years ago
Args:
saml_response: A SAML auth response object
5 years ago
failures: How many times a call to this function with this
saml_response has resulted in a failure
5 years ago
client_redirect_url: where the client wants to redirect back to
5 years ago
Returns:
dict: A dict containing new user attributes. Possible keys:
* mxid_localpart (str): Required. The localpart of the user's mxid
* displayname (str): The displayname of the user
5 years ago
"""
remote_user_id = saml_response.ava["uid"][0]
displayname = saml_response.ava.get("displayName", [None])[0]
expire_old_sessions()
5 years ago
# make up a cryptorandom session id
session_id = "".join(
self._random.choice(string.ascii_letters) for _ in range(16)
)
5 years ago
now = int(time.time() * 1000)
session = UsernameMappingSession(
remote_user_id=remote_user_id,
displayname=displayname,
client_redirect_url=client_redirect_url,
expiry_time_ms=now + MAPPING_SESSION_VALIDITY_PERIOD_MS,
)
5 years ago
username_mapping_sessions[session_id] = session
logger.info("Recorded registration session id %s", session_id)
5 years ago
# Redirect to the username picker
e = RedirectException(b"/_matrix/saml2/pick_username/")
e.cookies.append(
b"%s=%s; path=/" % (SESSION_COOKIE_NAME, session_id.encode("ascii"),)
)
raise e
@staticmethod
def parse_config(config: dict) -> SamlConfig:
"""Parse the dict provided by the homeserver's config
Args:
config: A dictionary containing configuration options for this provider
Returns:
SamlConfig: A custom config object
"""
return SamlConfig()
@staticmethod
def get_saml_attributes(config: SamlConfig) -> Tuple[set, set]:
"""Returns the required and optional attributes of a SAML auth response object
Args:
config: A SamlConfig object containing configuration options for this provider
Returns:
tuple[set,set]: The first set equates to the saml auth response
attributes that are required for the module to function, whereas the
second set consists of those attributes which can be used if
available, but are not necessary
"""
return {"uid"}, {"displayName"}