718 lines
26 KiB
Python
718 lines
26 KiB
Python
# Copyright 2018 New Vector
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# Copyright 2020-2021 The Matrix.org Foundation C.I.C
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from typing import Optional, Union
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from twisted.internet.defer import succeed
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import synapse.rest.admin
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from synapse.api.constants import LoginType
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from synapse.handlers.ui_auth.checkers import UserInteractiveAuthChecker
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from synapse.rest.client import account, auth, devices, login, register
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from synapse.rest.synapse.client import build_synapse_client_resource_tree
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from synapse.types import JsonDict, UserID
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from tests import unittest
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from tests.handlers.test_oidc import HAS_OIDC
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from tests.rest.client.utils import TEST_OIDC_CONFIG
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from tests.server import FakeChannel
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from tests.unittest import override_config, skip_unless
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class DummyRecaptchaChecker(UserInteractiveAuthChecker):
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def __init__(self, hs):
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super().__init__(hs)
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self.recaptcha_attempts = []
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def check_auth(self, authdict, clientip):
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self.recaptcha_attempts.append((authdict, clientip))
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return succeed(True)
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class FallbackAuthTests(unittest.HomeserverTestCase):
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servlets = [
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auth.register_servlets,
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register.register_servlets,
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]
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hijack_auth = False
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def make_homeserver(self, reactor, clock):
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config = self.default_config()
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config["enable_registration_captcha"] = True
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config["recaptcha_public_key"] = "brokencake"
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config["registrations_require_3pid"] = []
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hs = self.setup_test_homeserver(config=config)
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return hs
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def prepare(self, reactor, clock, hs):
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self.recaptcha_checker = DummyRecaptchaChecker(hs)
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auth_handler = hs.get_auth_handler()
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auth_handler.checkers[LoginType.RECAPTCHA] = self.recaptcha_checker
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def register(self, expected_response: int, body: JsonDict) -> FakeChannel:
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"""Make a register request."""
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channel = self.make_request("POST", "register", body)
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self.assertEqual(channel.code, expected_response)
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return channel
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def recaptcha(
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self,
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session: str,
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expected_post_response: int,
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post_session: Optional[str] = None,
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) -> None:
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"""Get and respond to a fallback recaptcha. Returns the second request."""
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if post_session is None:
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post_session = session
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channel = self.make_request(
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"GET", "auth/m.login.recaptcha/fallback/web?session=" + session
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)
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self.assertEqual(channel.code, 200)
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channel = self.make_request(
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"POST",
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"auth/m.login.recaptcha/fallback/web?session="
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+ post_session
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+ "&g-recaptcha-response=a",
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)
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self.assertEqual(channel.code, expected_post_response)
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# The recaptcha handler is called with the response given
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attempts = self.recaptcha_checker.recaptcha_attempts
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self.assertEqual(len(attempts), 1)
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self.assertEqual(attempts[0][0]["response"], "a")
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def test_fallback_captcha(self):
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"""Ensure that fallback auth via a captcha works."""
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# Returns a 401 as per the spec
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channel = self.register(
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401,
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{"username": "user", "type": "m.login.password", "password": "bar"},
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)
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# Grab the session
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session = channel.json_body["session"]
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# Assert our configured public key is being given
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self.assertEqual(
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channel.json_body["params"]["m.login.recaptcha"]["public_key"], "brokencake"
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)
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# Complete the recaptcha step.
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self.recaptcha(session, 200)
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# also complete the dummy auth
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self.register(200, {"auth": {"session": session, "type": "m.login.dummy"}})
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# Now we should have fulfilled a complete auth flow, including
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# the recaptcha fallback step, we can then send a
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# request to the register API with the session in the authdict.
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channel = self.register(200, {"auth": {"session": session}})
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# We're given a registered user.
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self.assertEqual(channel.json_body["user_id"], "@user:test")
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def test_complete_operation_unknown_session(self):
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"""
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Attempting to mark an invalid session as complete should error.
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"""
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# Make the initial request to register. (Later on a different password
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# will be used.)
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# Returns a 401 as per the spec
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channel = self.register(
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401, {"username": "user", "type": "m.login.password", "password": "bar"}
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)
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# Grab the session
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session = channel.json_body["session"]
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# Assert our configured public key is being given
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self.assertEqual(
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channel.json_body["params"]["m.login.recaptcha"]["public_key"], "brokencake"
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)
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# Attempt to complete the recaptcha step with an unknown session.
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# This results in an error.
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self.recaptcha(session, 400, session + "unknown")
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class UIAuthTests(unittest.HomeserverTestCase):
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servlets = [
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auth.register_servlets,
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devices.register_servlets,
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login.register_servlets,
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synapse.rest.admin.register_servlets_for_client_rest_resource,
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register.register_servlets,
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]
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def default_config(self):
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config = super().default_config()
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# public_baseurl uses an http:// scheme because FakeChannel.isSecure() returns
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# False, so synapse will see the requested uri as http://..., so using http in
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# the public_baseurl stops Synapse trying to redirect to https.
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config["public_baseurl"] = "http://synapse.test"
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if HAS_OIDC:
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# we enable OIDC as a way of testing SSO flows
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oidc_config = {}
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oidc_config.update(TEST_OIDC_CONFIG)
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oidc_config["allow_existing_users"] = True
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config["oidc_config"] = oidc_config
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return config
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def create_resource_dict(self):
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resource_dict = super().create_resource_dict()
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resource_dict.update(build_synapse_client_resource_tree(self.hs))
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return resource_dict
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def prepare(self, reactor, clock, hs):
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self.user_pass = "pass"
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self.user = self.register_user("test", self.user_pass)
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self.device_id = "dev1"
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self.user_tok = self.login("test", self.user_pass, self.device_id)
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def delete_device(
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self,
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access_token: str,
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device: str,
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expected_response: int,
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body: Union[bytes, JsonDict] = b"",
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) -> FakeChannel:
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"""Delete an individual device."""
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channel = self.make_request(
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"DELETE",
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"devices/" + device,
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body,
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access_token=access_token,
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)
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# Ensure the response is sane.
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self.assertEqual(channel.code, expected_response)
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return channel
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def delete_devices(self, expected_response: int, body: JsonDict) -> FakeChannel:
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"""Delete 1 or more devices."""
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# Note that this uses the delete_devices endpoint so that we can modify
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# the payload half-way through some tests.
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channel = self.make_request(
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"POST",
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"delete_devices",
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body,
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access_token=self.user_tok,
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)
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# Ensure the response is sane.
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self.assertEqual(channel.code, expected_response)
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return channel
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def test_ui_auth(self):
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"""
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Test user interactive authentication outside of registration.
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"""
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# Attempt to delete this device.
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# Returns a 401 as per the spec
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channel = self.delete_device(self.user_tok, self.device_id, 401)
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# Grab the session
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session = channel.json_body["session"]
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# Ensure that flows are what is expected.
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self.assertIn({"stages": ["m.login.password"]}, channel.json_body["flows"])
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# Make another request providing the UI auth flow.
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self.delete_device(
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self.user_tok,
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self.device_id,
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200,
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{
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"auth": {
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"type": "m.login.password",
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"identifier": {"type": "m.id.user", "user": self.user},
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"password": self.user_pass,
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"session": session,
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},
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},
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)
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def test_grandfathered_identifier(self):
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"""Check behaviour without "identifier" dict
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Synapse used to require clients to submit a "user" field for m.login.password
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UIA - check that still works.
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"""
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channel = self.delete_device(self.user_tok, self.device_id, 401)
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session = channel.json_body["session"]
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# Make another request providing the UI auth flow.
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self.delete_device(
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self.user_tok,
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self.device_id,
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200,
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{
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"auth": {
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"type": "m.login.password",
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"user": self.user,
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"password": self.user_pass,
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"session": session,
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},
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},
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)
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def test_can_change_body(self):
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"""
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The client dict can be modified during the user interactive authentication session.
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Note that it is not spec compliant to modify the client dict during a
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user interactive authentication session, but many clients currently do.
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When Synapse is updated to be spec compliant, the call to re-use the
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session ID should be rejected.
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"""
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# Create a second login.
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self.login("test", self.user_pass, "dev2")
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# Attempt to delete the first device.
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# Returns a 401 as per the spec
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channel = self.delete_devices(401, {"devices": [self.device_id]})
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# Grab the session
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session = channel.json_body["session"]
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# Ensure that flows are what is expected.
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self.assertIn({"stages": ["m.login.password"]}, channel.json_body["flows"])
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# Make another request providing the UI auth flow, but try to delete the
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# second device.
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self.delete_devices(
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200,
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{
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"devices": ["dev2"],
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"auth": {
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"type": "m.login.password",
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"identifier": {"type": "m.id.user", "user": self.user},
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"password": self.user_pass,
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"session": session,
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},
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},
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)
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def test_cannot_change_uri(self):
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"""
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The initial requested URI cannot be modified during the user interactive authentication session.
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"""
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# Create a second login.
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self.login("test", self.user_pass, "dev2")
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# Attempt to delete the first device.
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# Returns a 401 as per the spec
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channel = self.delete_device(self.user_tok, self.device_id, 401)
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# Grab the session
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session = channel.json_body["session"]
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# Ensure that flows are what is expected.
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self.assertIn({"stages": ["m.login.password"]}, channel.json_body["flows"])
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# Make another request providing the UI auth flow, but try to delete the
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# second device. This results in an error.
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#
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# This makes use of the fact that the device ID is embedded into the URL.
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self.delete_device(
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self.user_tok,
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"dev2",
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403,
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{
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"auth": {
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"type": "m.login.password",
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"identifier": {"type": "m.id.user", "user": self.user},
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"password": self.user_pass,
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"session": session,
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},
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},
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)
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@unittest.override_config({"ui_auth": {"session_timeout": "5s"}})
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def test_can_reuse_session(self):
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"""
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The session can be reused if configured.
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Compare to test_cannot_change_uri.
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"""
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# Create a second and third login.
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self.login("test", self.user_pass, "dev2")
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self.login("test", self.user_pass, "dev3")
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# Attempt to delete a device. This works since the user just logged in.
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self.delete_device(self.user_tok, "dev2", 200)
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# Move the clock forward past the validation timeout.
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self.reactor.advance(6)
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# Deleting another devices throws the user into UI auth.
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channel = self.delete_device(self.user_tok, "dev3", 401)
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# Grab the session
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session = channel.json_body["session"]
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# Ensure that flows are what is expected.
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self.assertIn({"stages": ["m.login.password"]}, channel.json_body["flows"])
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# Make another request providing the UI auth flow.
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self.delete_device(
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self.user_tok,
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"dev3",
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200,
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{
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"auth": {
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"type": "m.login.password",
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"identifier": {"type": "m.id.user", "user": self.user},
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"password": self.user_pass,
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"session": session,
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},
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},
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)
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# Make another request, but try to delete the first device. This works
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# due to re-using the previous session.
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#
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# Note that *no auth* information is provided, not even a session iD!
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self.delete_device(self.user_tok, self.device_id, 200)
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@skip_unless(HAS_OIDC, "requires OIDC")
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@override_config({"oidc_config": TEST_OIDC_CONFIG})
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def test_ui_auth_via_sso(self):
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"""Test a successful UI Auth flow via SSO
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This includes:
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* hitting the UIA SSO redirect endpoint
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* checking it serves a confirmation page which links to the OIDC provider
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* calling back to the synapse oidc callback
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* checking that the original operation succeeds
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"""
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# log the user in
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remote_user_id = UserID.from_string(self.user).localpart
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login_resp = self.helper.login_via_oidc(remote_user_id)
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self.assertEqual(login_resp["user_id"], self.user)
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# initiate a UI Auth process by attempting to delete the device
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channel = self.delete_device(self.user_tok, self.device_id, 401)
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# check that SSO is offered
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flows = channel.json_body["flows"]
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self.assertIn({"stages": ["m.login.sso"]}, flows)
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# run the UIA-via-SSO flow
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session_id = channel.json_body["session"]
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channel = self.helper.auth_via_oidc(
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{"sub": remote_user_id}, ui_auth_session_id=session_id
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)
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# that should serve a confirmation page
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self.assertEqual(channel.code, 200, channel.result)
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# and now the delete request should succeed.
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self.delete_device(
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self.user_tok,
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self.device_id,
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200,
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body={"auth": {"session": session_id}},
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)
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@skip_unless(HAS_OIDC, "requires OIDC")
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@override_config({"oidc_config": TEST_OIDC_CONFIG})
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def test_does_not_offer_password_for_sso_user(self):
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login_resp = self.helper.login_via_oidc("username")
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user_tok = login_resp["access_token"]
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device_id = login_resp["device_id"]
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# now call the device deletion API: we should get the option to auth with SSO
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# and not password.
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channel = self.delete_device(user_tok, device_id, 401)
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flows = channel.json_body["flows"]
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self.assertEqual(flows, [{"stages": ["m.login.sso"]}])
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def test_does_not_offer_sso_for_password_user(self):
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channel = self.delete_device(self.user_tok, self.device_id, 401)
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flows = channel.json_body["flows"]
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self.assertEqual(flows, [{"stages": ["m.login.password"]}])
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@skip_unless(HAS_OIDC, "requires OIDC")
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@override_config({"oidc_config": TEST_OIDC_CONFIG})
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def test_offers_both_flows_for_upgraded_user(self):
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"""A user that had a password and then logged in with SSO should get both flows"""
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login_resp = self.helper.login_via_oidc(UserID.from_string(self.user).localpart)
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self.assertEqual(login_resp["user_id"], self.user)
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channel = self.delete_device(self.user_tok, self.device_id, 401)
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flows = channel.json_body["flows"]
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# we have no particular expectations of ordering here
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self.assertIn({"stages": ["m.login.password"]}, flows)
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self.assertIn({"stages": ["m.login.sso"]}, flows)
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self.assertEqual(len(flows), 2)
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@skip_unless(HAS_OIDC, "requires OIDC")
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@override_config({"oidc_config": TEST_OIDC_CONFIG})
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def test_ui_auth_fails_for_incorrect_sso_user(self):
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"""If the user tries to authenticate with the wrong SSO user, they get an error"""
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# log the user in
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login_resp = self.helper.login_via_oidc(UserID.from_string(self.user).localpart)
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self.assertEqual(login_resp["user_id"], self.user)
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# start a UI Auth flow by attempting to delete a device
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channel = self.delete_device(self.user_tok, self.device_id, 401)
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flows = channel.json_body["flows"]
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self.assertIn({"stages": ["m.login.sso"]}, flows)
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session_id = channel.json_body["session"]
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# do the OIDC auth, but auth as the wrong user
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channel = self.helper.auth_via_oidc(
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{"sub": "wrong_user"}, ui_auth_session_id=session_id
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)
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# that should return a failure message
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self.assertSubstring("We were unable to validate", channel.text_body)
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# ... and the delete op should now fail with a 403
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self.delete_device(
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self.user_tok, self.device_id, 403, body={"auth": {"session": session_id}}
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)
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class RefreshAuthTests(unittest.HomeserverTestCase):
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servlets = [
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auth.register_servlets,
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account.register_servlets,
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login.register_servlets,
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synapse.rest.admin.register_servlets_for_client_rest_resource,
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register.register_servlets,
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]
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hijack_auth = False
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def prepare(self, reactor, clock, hs):
|
|
self.user_pass = "pass"
|
|
self.user = self.register_user("test", self.user_pass)
|
|
|
|
def test_login_issue_refresh_token(self):
|
|
"""
|
|
A login response should include a refresh_token only if asked.
|
|
"""
|
|
# Test login
|
|
body = {"type": "m.login.password", "user": "test", "password": self.user_pass}
|
|
|
|
login_without_refresh = self.make_request(
|
|
"POST", "/_matrix/client/r0/login", body
|
|
)
|
|
self.assertEqual(login_without_refresh.code, 200, login_without_refresh.result)
|
|
self.assertNotIn("refresh_token", login_without_refresh.json_body)
|
|
|
|
login_with_refresh = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/r0/login?org.matrix.msc2918.refresh_token=true",
|
|
body,
|
|
)
|
|
self.assertEqual(login_with_refresh.code, 200, login_with_refresh.result)
|
|
self.assertIn("refresh_token", login_with_refresh.json_body)
|
|
self.assertIn("expires_in_ms", login_with_refresh.json_body)
|
|
|
|
def test_register_issue_refresh_token(self):
|
|
"""
|
|
A register response should include a refresh_token only if asked.
|
|
"""
|
|
register_without_refresh = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/r0/register",
|
|
{
|
|
"username": "test2",
|
|
"password": self.user_pass,
|
|
"auth": {"type": LoginType.DUMMY},
|
|
},
|
|
)
|
|
self.assertEqual(
|
|
register_without_refresh.code, 200, register_without_refresh.result
|
|
)
|
|
self.assertNotIn("refresh_token", register_without_refresh.json_body)
|
|
|
|
register_with_refresh = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/r0/register?org.matrix.msc2918.refresh_token=true",
|
|
{
|
|
"username": "test3",
|
|
"password": self.user_pass,
|
|
"auth": {"type": LoginType.DUMMY},
|
|
},
|
|
)
|
|
self.assertEqual(register_with_refresh.code, 200, register_with_refresh.result)
|
|
self.assertIn("refresh_token", register_with_refresh.json_body)
|
|
self.assertIn("expires_in_ms", register_with_refresh.json_body)
|
|
|
|
def test_token_refresh(self):
|
|
"""
|
|
A refresh token can be used to issue a new access token.
|
|
"""
|
|
body = {"type": "m.login.password", "user": "test", "password": self.user_pass}
|
|
login_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/r0/login?org.matrix.msc2918.refresh_token=true",
|
|
body,
|
|
)
|
|
self.assertEqual(login_response.code, 200, login_response.result)
|
|
|
|
refresh_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/unstable/org.matrix.msc2918.refresh_token/refresh",
|
|
{"refresh_token": login_response.json_body["refresh_token"]},
|
|
)
|
|
self.assertEqual(refresh_response.code, 200, refresh_response.result)
|
|
self.assertIn("access_token", refresh_response.json_body)
|
|
self.assertIn("refresh_token", refresh_response.json_body)
|
|
self.assertIn("expires_in_ms", refresh_response.json_body)
|
|
|
|
# The access and refresh tokens should be different from the original ones after refresh
|
|
self.assertNotEqual(
|
|
login_response.json_body["access_token"],
|
|
refresh_response.json_body["access_token"],
|
|
)
|
|
self.assertNotEqual(
|
|
login_response.json_body["refresh_token"],
|
|
refresh_response.json_body["refresh_token"],
|
|
)
|
|
|
|
@override_config({"access_token_lifetime": "1m"})
|
|
def test_refresh_token_expiration(self):
|
|
"""
|
|
The access token should have some time as specified in the config.
|
|
"""
|
|
body = {"type": "m.login.password", "user": "test", "password": self.user_pass}
|
|
login_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/r0/login?org.matrix.msc2918.refresh_token=true",
|
|
body,
|
|
)
|
|
self.assertEqual(login_response.code, 200, login_response.result)
|
|
self.assertApproximates(
|
|
login_response.json_body["expires_in_ms"], 60 * 1000, 100
|
|
)
|
|
|
|
refresh_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/unstable/org.matrix.msc2918.refresh_token/refresh",
|
|
{"refresh_token": login_response.json_body["refresh_token"]},
|
|
)
|
|
self.assertEqual(refresh_response.code, 200, refresh_response.result)
|
|
self.assertApproximates(
|
|
refresh_response.json_body["expires_in_ms"], 60 * 1000, 100
|
|
)
|
|
|
|
def test_refresh_token_invalidation(self):
|
|
"""Refresh tokens are invalidated after first use of the next token.
|
|
|
|
A refresh token is considered invalid if:
|
|
- it was already used at least once
|
|
- and either
|
|
- the next access token was used
|
|
- the next refresh token was used
|
|
|
|
The chain of tokens goes like this:
|
|
|
|
login -|-> first_refresh -> third_refresh (fails)
|
|
|-> second_refresh -> fifth_refresh
|
|
|-> fourth_refresh (fails)
|
|
"""
|
|
|
|
body = {"type": "m.login.password", "user": "test", "password": self.user_pass}
|
|
login_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/r0/login?org.matrix.msc2918.refresh_token=true",
|
|
body,
|
|
)
|
|
self.assertEqual(login_response.code, 200, login_response.result)
|
|
|
|
# This first refresh should work properly
|
|
first_refresh_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/unstable/org.matrix.msc2918.refresh_token/refresh",
|
|
{"refresh_token": login_response.json_body["refresh_token"]},
|
|
)
|
|
self.assertEqual(
|
|
first_refresh_response.code, 200, first_refresh_response.result
|
|
)
|
|
|
|
# This one as well, since the token in the first one was never used
|
|
second_refresh_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/unstable/org.matrix.msc2918.refresh_token/refresh",
|
|
{"refresh_token": login_response.json_body["refresh_token"]},
|
|
)
|
|
self.assertEqual(
|
|
second_refresh_response.code, 200, second_refresh_response.result
|
|
)
|
|
|
|
# This one should not, since the token from the first refresh is not valid anymore
|
|
third_refresh_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/unstable/org.matrix.msc2918.refresh_token/refresh",
|
|
{"refresh_token": first_refresh_response.json_body["refresh_token"]},
|
|
)
|
|
self.assertEqual(
|
|
third_refresh_response.code, 401, third_refresh_response.result
|
|
)
|
|
|
|
# The associated access token should also be invalid
|
|
whoami_response = self.make_request(
|
|
"GET",
|
|
"/_matrix/client/r0/account/whoami",
|
|
access_token=first_refresh_response.json_body["access_token"],
|
|
)
|
|
self.assertEqual(whoami_response.code, 401, whoami_response.result)
|
|
|
|
# But all other tokens should work (they will expire after some time)
|
|
for access_token in [
|
|
second_refresh_response.json_body["access_token"],
|
|
login_response.json_body["access_token"],
|
|
]:
|
|
whoami_response = self.make_request(
|
|
"GET", "/_matrix/client/r0/account/whoami", access_token=access_token
|
|
)
|
|
self.assertEqual(whoami_response.code, 200, whoami_response.result)
|
|
|
|
# Now that the access token from the last valid refresh was used once, refreshing with the N-1 token should fail
|
|
fourth_refresh_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/unstable/org.matrix.msc2918.refresh_token/refresh",
|
|
{"refresh_token": login_response.json_body["refresh_token"]},
|
|
)
|
|
self.assertEqual(
|
|
fourth_refresh_response.code, 403, fourth_refresh_response.result
|
|
)
|
|
|
|
# But refreshing from the last valid refresh token still works
|
|
fifth_refresh_response = self.make_request(
|
|
"POST",
|
|
"/_matrix/client/unstable/org.matrix.msc2918.refresh_token/refresh",
|
|
{"refresh_token": second_refresh_response.json_body["refresh_token"]},
|
|
)
|
|
self.assertEqual(
|
|
fifth_refresh_response.code, 200, fifth_refresh_response.result
|
|
)
|