223 lines
7.8 KiB
Python
223 lines
7.8 KiB
Python
# Copyright 2015, 2016 OpenMarket Ltd
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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 unittest.mock import Mock
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import pymacaroons
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from twisted.test.proto_helpers import MemoryReactor
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from synapse.api.errors import AuthError, ResourceLimitError
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from synapse.rest import admin
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from synapse.server import HomeServer
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from synapse.util import Clock
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from tests import unittest
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from tests.test_utils import make_awaitable
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class AuthTestCase(unittest.HomeserverTestCase):
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servlets = [
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admin.register_servlets,
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]
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def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
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self.auth_handler = hs.get_auth_handler()
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self.macaroon_generator = hs.get_macaroon_generator()
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# MAU tests
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# AuthBlocking reads from the hs' config on initialization. We need to
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# modify its config instead of the hs'
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self.auth_blocking = hs.get_auth()._auth_blocking
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self.auth_blocking._max_mau_value = 50
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self.small_number_of_users = 1
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self.large_number_of_users = 100
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self.user1 = self.register_user("a_user", "pass")
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def test_macaroon_caveats(self) -> None:
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token = self.macaroon_generator.generate_guest_access_token("a_user")
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macaroon = pymacaroons.Macaroon.deserialize(token)
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def verify_gen(caveat: str) -> bool:
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return caveat == "gen = 1"
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def verify_user(caveat: str) -> bool:
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return caveat == "user_id = a_user"
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def verify_type(caveat: str) -> bool:
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return caveat == "type = access"
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def verify_nonce(caveat: str) -> bool:
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return caveat.startswith("nonce =")
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def verify_guest(caveat: str) -> bool:
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return caveat == "guest = true"
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v = pymacaroons.Verifier()
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v.satisfy_general(verify_gen)
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v.satisfy_general(verify_user)
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v.satisfy_general(verify_type)
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v.satisfy_general(verify_nonce)
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v.satisfy_general(verify_guest)
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v.verify(macaroon, self.hs.config.key.macaroon_secret_key)
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def test_short_term_login_token_gives_user_id(self) -> None:
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token = self.macaroon_generator.generate_short_term_login_token(
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self.user1, "", duration_in_ms=5000
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)
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res = self.get_success(self.auth_handler.validate_short_term_login_token(token))
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self.assertEqual(self.user1, res.user_id)
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self.assertEqual("", res.auth_provider_id)
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# when we advance the clock, the token should be rejected
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self.reactor.advance(6)
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self.get_failure(
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self.auth_handler.validate_short_term_login_token(token),
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AuthError,
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)
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def test_short_term_login_token_gives_auth_provider(self) -> None:
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token = self.macaroon_generator.generate_short_term_login_token(
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self.user1, auth_provider_id="my_idp"
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)
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res = self.get_success(self.auth_handler.validate_short_term_login_token(token))
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self.assertEqual(self.user1, res.user_id)
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self.assertEqual("my_idp", res.auth_provider_id)
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def test_short_term_login_token_cannot_replace_user_id(self) -> None:
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token = self.macaroon_generator.generate_short_term_login_token(
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self.user1, "", duration_in_ms=5000
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)
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macaroon = pymacaroons.Macaroon.deserialize(token)
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res = self.get_success(
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self.auth_handler.validate_short_term_login_token(macaroon.serialize())
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)
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self.assertEqual(self.user1, res.user_id)
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# add another "user_id" caveat, which might allow us to override the
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# user_id.
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macaroon.add_first_party_caveat("user_id = b_user")
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self.get_failure(
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self.auth_handler.validate_short_term_login_token(macaroon.serialize()),
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AuthError,
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)
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def test_mau_limits_disabled(self) -> None:
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self.auth_blocking._limit_usage_by_mau = False
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# Ensure does not throw exception
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self.get_success(
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self.auth_handler.create_access_token_for_user_id(
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self.user1, device_id=None, valid_until_ms=None
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)
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)
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self.get_success(
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self.auth_handler.validate_short_term_login_token(
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self._get_macaroon().serialize()
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)
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)
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def test_mau_limits_exceeded_large(self) -> None:
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self.auth_blocking._limit_usage_by_mau = True
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self.hs.get_datastores().main.get_monthly_active_count = Mock(
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return_value=make_awaitable(self.large_number_of_users)
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)
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self.get_failure(
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self.auth_handler.create_access_token_for_user_id(
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self.user1, device_id=None, valid_until_ms=None
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),
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ResourceLimitError,
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)
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self.hs.get_datastores().main.get_monthly_active_count = Mock(
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return_value=make_awaitable(self.large_number_of_users)
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)
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self.get_failure(
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self.auth_handler.validate_short_term_login_token(
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self._get_macaroon().serialize()
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),
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ResourceLimitError,
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)
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def test_mau_limits_parity(self) -> None:
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# Ensure we're not at the unix epoch.
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self.reactor.advance(1)
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self.auth_blocking._limit_usage_by_mau = True
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# Set the server to be at the edge of too many users.
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self.hs.get_datastores().main.get_monthly_active_count = Mock(
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return_value=make_awaitable(self.auth_blocking._max_mau_value)
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)
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# If not in monthly active cohort
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self.get_failure(
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self.auth_handler.create_access_token_for_user_id(
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self.user1, device_id=None, valid_until_ms=None
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),
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ResourceLimitError,
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)
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self.get_failure(
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self.auth_handler.validate_short_term_login_token(
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self._get_macaroon().serialize()
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),
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ResourceLimitError,
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)
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# If in monthly active cohort
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self.hs.get_datastores().main.user_last_seen_monthly_active = Mock(
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return_value=make_awaitable(self.clock.time_msec())
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)
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self.get_success(
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self.auth_handler.create_access_token_for_user_id(
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self.user1, device_id=None, valid_until_ms=None
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)
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)
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self.get_success(
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self.auth_handler.validate_short_term_login_token(
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self._get_macaroon().serialize()
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)
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)
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def test_mau_limits_not_exceeded(self) -> None:
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self.auth_blocking._limit_usage_by_mau = True
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self.hs.get_datastores().main.get_monthly_active_count = Mock(
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return_value=make_awaitable(self.small_number_of_users)
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)
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# Ensure does not raise exception
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self.get_success(
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self.auth_handler.create_access_token_for_user_id(
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self.user1, device_id=None, valid_until_ms=None
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)
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)
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self.hs.get_datastores().main.get_monthly_active_count = Mock(
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return_value=make_awaitable(self.small_number_of_users)
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)
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self.get_success(
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self.auth_handler.validate_short_term_login_token(
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self._get_macaroon().serialize()
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)
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)
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def _get_macaroon(self) -> pymacaroons.Macaroon:
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token = self.macaroon_generator.generate_short_term_login_token(
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self.user1, "", duration_in_ms=5000
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)
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return pymacaroons.Macaroon.deserialize(token)
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