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Additional tests for third-party event rules (#8468)
* Optimise and test state fetching for 3p event rules Getting all the events at once is much more efficient than getting them individually * Test that 3p event rules can modify events
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changelog.d/8468.misc
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changelog.d/8468.misc
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Additional testing for `ThirdPartyEventRules`.
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@ -61,12 +61,14 @@ class ThirdPartyEventRules:
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prev_state_ids = await context.get_prev_state_ids()
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prev_state_ids = await context.get_prev_state_ids()
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# Retrieve the state events from the database.
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# Retrieve the state events from the database.
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state_events = {}
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events = await self.store.get_events(prev_state_ids.values())
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for key, event_id in prev_state_ids.items():
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state_events = {(ev.type, ev.state_key): ev for ev in events.values()}
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state_events[key] = await self.store.get_event(event_id, allow_none=True)
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ret = await self.third_party_rules.check_event_allowed(event, state_events)
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# The module can modify the event slightly if it wants, but caution should be
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return ret
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# exercised, and it's likely to go very wrong if applied to events received over
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# federation.
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return await self.third_party_rules.check_event_allowed(event, state_events)
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async def on_create_room(
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async def on_create_room(
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self, requester: Requester, config: dict, is_requester_admin: bool
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self, requester: Requester, config: dict, is_requester_admin: bool
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@ -12,26 +12,32 @@
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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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# See the License for the specific language governing permissions and
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# limitations under the License.
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# limitations under the License.
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import threading
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from mock import Mock
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from synapse.events import EventBase
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from synapse.rest import admin
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from synapse.rest import admin
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from synapse.rest.client.v1 import login, room
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from synapse.rest.client.v1 import login, room
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from synapse.types import Requester
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from synapse.types import Requester, StateMap
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from tests import unittest
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from tests import unittest
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thread_local = threading.local()
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class ThirdPartyRulesTestModule:
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class ThirdPartyRulesTestModule:
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def __init__(self, config, *args, **kwargs):
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def __init__(self, config, module_api):
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pass
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# keep a record of the "current" rules module, so that the test can patch
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# it if desired.
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thread_local.rules_module = self
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async def on_create_room(
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async def on_create_room(
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self, requester: Requester, config: dict, is_requester_admin: bool
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self, requester: Requester, config: dict, is_requester_admin: bool
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):
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):
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return True
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return True
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async def check_event_allowed(self, event, context):
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async def check_event_allowed(self, event: EventBase, state: StateMap[EventBase]):
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if event.type == "foo.bar.forbidden":
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return False
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else:
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return True
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return True
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@staticmethod
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@staticmethod
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@ -39,6 +45,10 @@ class ThirdPartyRulesTestModule:
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return config
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return config
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def current_rules_module() -> ThirdPartyRulesTestModule:
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return thread_local.rules_module
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class ThirdPartyRulesTestCase(unittest.HomeserverTestCase):
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class ThirdPartyRulesTestCase(unittest.HomeserverTestCase):
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servlets = [
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servlets = [
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admin.register_servlets,
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admin.register_servlets,
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@ -46,15 +56,13 @@ class ThirdPartyRulesTestCase(unittest.HomeserverTestCase):
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room.register_servlets,
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room.register_servlets,
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]
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]
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def make_homeserver(self, reactor, clock):
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def default_config(self):
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config = self.default_config()
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config = super().default_config()
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config["third_party_event_rules"] = {
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config["third_party_event_rules"] = {
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"module": __name__ + ".ThirdPartyRulesTestModule",
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"module": __name__ + ".ThirdPartyRulesTestModule",
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"config": {},
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"config": {},
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}
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}
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return config
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self.hs = self.setup_test_homeserver(config=config)
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return self.hs
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def prepare(self, reactor, clock, homeserver):
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def prepare(self, reactor, clock, homeserver):
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# Create a user and room to play with during the tests
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# Create a user and room to play with during the tests
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@ -67,6 +75,14 @@ class ThirdPartyRulesTestCase(unittest.HomeserverTestCase):
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"""Tests that a forbidden event is forbidden from being sent, but an allowed one
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"""Tests that a forbidden event is forbidden from being sent, but an allowed one
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can be sent.
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can be sent.
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"""
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"""
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# patch the rules module with a Mock which will return False for some event
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# types
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async def check(ev, state):
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return ev.type != "foo.bar.forbidden"
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callback = Mock(spec=[], side_effect=check)
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current_rules_module().check_event_allowed = callback
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request, channel = self.make_request(
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request, channel = self.make_request(
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"PUT",
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"PUT",
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"/_matrix/client/r0/rooms/%s/send/foo.bar.allowed/1" % self.room_id,
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"/_matrix/client/r0/rooms/%s/send/foo.bar.allowed/1" % self.room_id,
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@ -76,6 +92,16 @@ class ThirdPartyRulesTestCase(unittest.HomeserverTestCase):
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self.render(request)
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self.render(request)
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self.assertEquals(channel.result["code"], b"200", channel.result)
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self.assertEquals(channel.result["code"], b"200", channel.result)
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callback.assert_called_once()
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# there should be various state events in the state arg: do some basic checks
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state_arg = callback.call_args[0][1]
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for k in (("m.room.create", ""), ("m.room.member", self.user_id)):
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self.assertIn(k, state_arg)
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ev = state_arg[k]
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self.assertEqual(ev.type, k[0])
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self.assertEqual(ev.state_key, k[1])
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request, channel = self.make_request(
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request, channel = self.make_request(
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"PUT",
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"PUT",
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"/_matrix/client/r0/rooms/%s/send/foo.bar.forbidden/1" % self.room_id,
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"/_matrix/client/r0/rooms/%s/send/foo.bar.forbidden/1" % self.room_id,
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@ -84,3 +110,35 @@ class ThirdPartyRulesTestCase(unittest.HomeserverTestCase):
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)
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)
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self.render(request)
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self.render(request)
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self.assertEquals(channel.result["code"], b"403", channel.result)
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self.assertEquals(channel.result["code"], b"403", channel.result)
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def test_modify_event(self):
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"""Tests that the module can successfully tweak an event before it is persisted.
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"""
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# first patch the event checker so that it will modify the event
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async def check(ev: EventBase, state):
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ev.content = {"x": "y"}
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return True
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current_rules_module().check_event_allowed = check
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# now send the event
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request, channel = self.make_request(
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"PUT",
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"/_matrix/client/r0/rooms/%s/send/modifyme/1" % self.room_id,
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{"x": "x"},
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access_token=self.tok,
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)
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self.render(request)
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self.assertEqual(channel.result["code"], b"200", channel.result)
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event_id = channel.json_body["event_id"]
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# ... and check that it got modified
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request, channel = self.make_request(
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"GET",
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"/_matrix/client/r0/rooms/%s/event/%s" % (self.room_id, event_id),
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access_token=self.tok,
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)
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self.render(request)
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self.assertEqual(channel.result["code"], b"200", channel.result)
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ev = channel.json_body
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self.assertEqual(ev["content"]["x"], "y")
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