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# Copyright 2020 The Matrix.org Foundation C.I.C.
#
# 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.
from unittest.mock import Mock
from synapse.handlers.cas import CasResponse
from tests.test_utils import simple_async_mock
from tests.unittest import HomeserverTestCase, override_config
# These are a few constants that are used as config parameters in the tests.
BASE_URL = "https://synapse/"
SERVER_URL = "https://issuer/"
class CasHandlerTestCase(HomeserverTestCase):
def default_config(self):
config = super().default_config()
config["public_baseurl"] = BASE_URL
cas_config = {
"enabled": True,
"server_url": SERVER_URL,
"service_url": BASE_URL,
}
# Update this config with what's in the default config so that
# override_config works as expected.
cas_config.update(config.get("cas_config", {}))
config["cas_config"] = cas_config
return config
def make_homeserver(self, reactor, clock):
hs = self.setup_test_homeserver()
self.handler = hs.get_cas_handler()
# Reduce the number of attempts when generating MXIDs.
sso_handler = hs.get_sso_handler()
sso_handler._MAP_USERNAME_RETRIES = 3
return hs
def test_map_cas_user_to_user(self):
"""Ensure that mapping the CAS user returned from a provider to an MXID works properly."""
# stub out the auth handler
auth_handler = self.hs.get_auth_handler()
auth_handler.complete_sso_login = simple_async_mock()
cas_response = CasResponse("test_user", {})
request = _mock_request()
self.get_success(
self.handler._handle_cas_response(request, cas_response, "redirect_uri", "")
)
# check that the auth handler got called as expected
auth_handler.complete_sso_login.assert_called_once_with(
"@test_user:test", "cas", request, "redirect_uri", None, new_user=True
)
def test_map_cas_user_to_existing_user(self):
"""Existing users can log in with CAS account."""
store = self.hs.get_datastore()
self.get_success(
store.register_user(user_id="@test_user:test", password_hash=None)
)
# stub out the auth handler
auth_handler = self.hs.get_auth_handler()
auth_handler.complete_sso_login = simple_async_mock()
# Map a user via SSO.
cas_response = CasResponse("test_user", {})
request = _mock_request()
self.get_success(
self.handler._handle_cas_response(request, cas_response, "redirect_uri", "")
)
# check that the auth handler got called as expected
auth_handler.complete_sso_login.assert_called_once_with(
"@test_user:test", "cas", request, "redirect_uri", None, new_user=False
)
# Subsequent calls should map to the same mxid.
auth_handler.complete_sso_login.reset_mock()
self.get_success(
self.handler._handle_cas_response(request, cas_response, "redirect_uri", "")
)
auth_handler.complete_sso_login.assert_called_once_with(
"@test_user:test", "cas", request, "redirect_uri", None, new_user=False
)
def test_map_cas_user_to_invalid_localpart(self):
"""CAS automaps invalid characters to base-64 encoding."""
# stub out the auth handler
auth_handler = self.hs.get_auth_handler()
auth_handler.complete_sso_login = simple_async_mock()
cas_response = CasResponse("föö", {})
request = _mock_request()
self.get_success(
self.handler._handle_cas_response(request, cas_response, "redirect_uri", "")
)
# check that the auth handler got called as expected
auth_handler.complete_sso_login.assert_called_once_with(
"@f=c3=b6=c3=b6:test", "cas", request, "redirect_uri", None, new_user=True
)
@override_config(
{
"cas_config": {
"required_attributes": {"userGroup": "staff", "department": None}
}
}
)
def test_required_attributes(self):
"""The required attributes must be met from the CAS response."""
# stub out the auth handler
auth_handler = self.hs.get_auth_handler()
auth_handler.complete_sso_login = simple_async_mock()
# The response doesn't have the proper userGroup or department.
cas_response = CasResponse("test_user", {})
request = _mock_request()
self.get_success(
self.handler._handle_cas_response(request, cas_response, "redirect_uri", "")
)
auth_handler.complete_sso_login.assert_not_called()
# The response doesn't have any department.
cas_response = CasResponse("test_user", {"userGroup": "staff"})
request.reset_mock()
self.get_success(
self.handler._handle_cas_response(request, cas_response, "redirect_uri", "")
)
auth_handler.complete_sso_login.assert_not_called()
# Add the proper attributes and it should succeed.
cas_response = CasResponse(
"test_user", {"userGroup": ["staff", "admin"], "department": ["sales"]}
)
request.reset_mock()
self.get_success(
self.handler._handle_cas_response(request, cas_response, "redirect_uri", "")
)
# check that the auth handler got called as expected
auth_handler.complete_sso_login.assert_called_once_with(
"@test_user:test", "cas", request, "redirect_uri", None, new_user=True
)
def _mock_request():
"""Returns a mock which will stand in as a SynapseRequest"""
return Mock(spec=["getClientIP", "getHeader", "_disconnected"])
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