Add basic SAML tests for mapping users. (#8800)

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Patrick Cloke 2020-12-02 07:09:21 -05:00 committed by GitHub
parent d3ed93504b
commit c21bdc813f
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5 changed files with 156 additions and 19 deletions

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@ -6,7 +6,7 @@
set -ex
apt-get update
apt-get install -y python3.5 python3.5-dev python3-pip libxml2-dev libxslt-dev zlib1g-dev tox
apt-get install -y python3.5 python3.5-dev python3-pip libxml2-dev libxslt-dev xmlsec1 zlib1g-dev tox
export LANG="C.UTF-8"

1
changelog.d/8800.misc Normal file
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@ -0,0 +1 @@
Add additional error checking for OpenID Connect and SAML mapping providers.

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@ -265,7 +265,7 @@ class SamlHandler(BaseHandler):
return UserAttributes(
localpart=result.get("mxid_localpart"),
display_name=result.get("displayname"),
emails=result.get("emails"),
emails=result.get("emails", []),
)
with (await self._mapping_lock.queue(self._auth_provider_id)):

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@ -23,7 +23,7 @@ import pymacaroons
from twisted.python.failure import Failure
from twisted.web._newclient import ResponseDone
from synapse.handlers.oidc_handler import OidcError, OidcHandler, OidcMappingProvider
from synapse.handlers.oidc_handler import OidcError, OidcMappingProvider
from synapse.handlers.sso import MappingException
from synapse.types import UserID
@ -127,13 +127,8 @@ async def get_json(url):
class OidcHandlerTestCase(HomeserverTestCase):
def make_homeserver(self, reactor, clock):
self.http_client = Mock(spec=["get_json"])
self.http_client.get_json.side_effect = get_json
self.http_client.user_agent = "Synapse Test"
config = self.default_config()
def default_config(self):
config = super().default_config()
config["public_baseurl"] = BASE_URL
oidc_config = {
"enabled": True,
@ -149,19 +144,24 @@ class OidcHandlerTestCase(HomeserverTestCase):
oidc_config.update(config.get("oidc_config", {}))
config["oidc_config"] = oidc_config
hs = self.setup_test_homeserver(
http_client=self.http_client,
proxied_http_client=self.http_client,
config=config,
)
return config
self.handler = OidcHandler(hs)
def make_homeserver(self, reactor, clock):
self.http_client = Mock(spec=["get_json"])
self.http_client.get_json.side_effect = get_json
self.http_client.user_agent = "Synapse Test"
hs = self.setup_test_homeserver(proxied_http_client=self.http_client)
self.handler = hs.get_oidc_handler()
sso_handler = hs.get_sso_handler()
# Mock the render error method.
self.render_error = Mock(return_value=None)
self.handler._sso_handler.render_error = self.render_error
sso_handler.render_error = self.render_error
# Reduce the number of attempts when generating MXIDs.
self.handler._sso_handler._MAP_USERNAME_RETRIES = 3
sso_handler._MAP_USERNAME_RETRIES = 3
return hs
@ -832,7 +832,7 @@ class OidcHandlerTestCase(HomeserverTestCase):
# test_user is already taken, so test_user1 gets registered instead.
self.assertEqual(mxid, "@test_user1:test")
# Register all of the potential users for a particular username.
# Register all of the potential mxids for a particular OIDC username.
self.get_success(
store.register_user(user_id="@tester:test", password_hash=None)
)

136
tests/handlers/test_saml.py Normal file
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@ -0,0 +1,136 @@
# 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.
import attr
from synapse.handlers.sso import MappingException
from tests.unittest import HomeserverTestCase
# These are a few constants that are used as config parameters in the tests.
BASE_URL = "https://synapse/"
@attr.s
class FakeAuthnResponse:
ava = attr.ib(type=dict)
class TestMappingProvider:
def __init__(self, config, module):
pass
@staticmethod
def parse_config(config):
return
@staticmethod
def get_saml_attributes(config):
return {"uid"}, {"displayName"}
def get_remote_user_id(self, saml_response, client_redirect_url):
return saml_response.ava["uid"]
def saml_response_to_user_attributes(
self, saml_response, failures, client_redirect_url
):
localpart = saml_response.ava["username"] + (str(failures) if failures else "")
return {"mxid_localpart": localpart, "displayname": None}
class SamlHandlerTestCase(HomeserverTestCase):
def default_config(self):
config = super().default_config()
config["public_baseurl"] = BASE_URL
saml_config = {
"sp_config": {"metadata": {}},
# Disable grandfathering.
"grandfathered_mxid_source_attribute": None,
"user_mapping_provider": {"module": __name__ + ".TestMappingProvider"},
}
config["saml2_config"] = saml_config
return config
def make_homeserver(self, reactor, clock):
hs = self.setup_test_homeserver()
self.handler = hs.get_saml_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_saml_response_to_user(self):
"""Ensure that mapping the SAML response returned from a provider to an MXID works properly."""
saml_response = FakeAuthnResponse({"uid": "test_user", "username": "test_user"})
# The redirect_url doesn't matter with the default user mapping provider.
redirect_url = ""
mxid = self.get_success(
self.handler._map_saml_response_to_user(
saml_response, redirect_url, "user-agent", "10.10.10.10"
)
)
self.assertEqual(mxid, "@test_user:test")
def test_map_saml_response_to_invalid_localpart(self):
"""If the mapping provider generates an invalid localpart it should be rejected."""
saml_response = FakeAuthnResponse({"uid": "test", "username": "föö"})
redirect_url = ""
e = self.get_failure(
self.handler._map_saml_response_to_user(
saml_response, redirect_url, "user-agent", "10.10.10.10"
),
MappingException,
)
self.assertEqual(str(e.value), "localpart is invalid: föö")
def test_map_saml_response_to_user_retries(self):
"""The mapping provider can retry generating an MXID if the MXID is already in use."""
store = self.hs.get_datastore()
self.get_success(
store.register_user(user_id="@test_user:test", password_hash=None)
)
saml_response = FakeAuthnResponse({"uid": "test", "username": "test_user"})
redirect_url = ""
mxid = self.get_success(
self.handler._map_saml_response_to_user(
saml_response, redirect_url, "user-agent", "10.10.10.10"
)
)
# test_user is already taken, so test_user1 gets registered instead.
self.assertEqual(mxid, "@test_user1:test")
# Register all of the potential mxids for a particular SAML username.
self.get_success(
store.register_user(user_id="@tester:test", password_hash=None)
)
for i in range(1, 3):
self.get_success(
store.register_user(user_id="@tester%d:test" % i, password_hash=None)
)
# Now attempt to map to a username, this will fail since all potential usernames are taken.
saml_response = FakeAuthnResponse({"uid": "tester", "username": "tester"})
e = self.get_failure(
self.handler._map_saml_response_to_user(
saml_response, redirect_url, "user-agent", "10.10.10.10"
),
MappingException,
)
self.assertEqual(
str(e.value), "Unable to generate a Matrix ID from the SSO response"
)