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-rw-r--r--tests/handlers/test_appservice.py281
1 files changed, 270 insertions, 11 deletions
diff --git a/tests/handlers/test_appservice.py b/tests/handlers/test_appservice.py
index d6f14e2dba..fe57ff2671 100644
--- a/tests/handlers/test_appservice.py
+++ b/tests/handlers/test_appservice.py
@@ -1,4 +1,4 @@
-# Copyright 2015, 2016 OpenMarket Ltd
+# Copyright 2015-2021 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.
@@ -12,18 +12,23 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from typing import Dict, Iterable, List, Optional
 from unittest.mock import Mock
 
 from twisted.internet import defer
 
+import synapse.rest.admin
+import synapse.storage
+from synapse.appservice import ApplicationService
 from synapse.handlers.appservice import ApplicationServicesHandler
+from synapse.rest.client import login, receipts, room, sendtodevice
 from synapse.types import RoomStreamToken
+from synapse.util.stringutils import random_string
 
-from tests.test_utils import make_awaitable
+from tests import unittest
+from tests.test_utils import make_awaitable, simple_async_mock
 from tests.utils import MockClock
 
-from .. import unittest
-
 
 class AppServiceHandlerTestCase(unittest.TestCase):
     """Tests the ApplicationServicesHandler."""
@@ -36,6 +41,9 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         hs.get_datastore.return_value = self.mock_store
         self.mock_store.get_received_ts.return_value = make_awaitable(0)
         self.mock_store.set_appservice_last_pos.return_value = make_awaitable(None)
+        self.mock_store.set_appservice_stream_type_pos.return_value = make_awaitable(
+            None
+        )
         hs.get_application_service_api.return_value = self.mock_as_api
         hs.get_application_service_scheduler.return_value = self.mock_scheduler
         hs.get_clock.return_value = MockClock()
@@ -63,8 +71,8 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         ]
         self.handler.notify_interested_services(RoomStreamToken(None, 1))
 
-        self.mock_scheduler.submit_event_for_as.assert_called_once_with(
-            interested_service, event
+        self.mock_scheduler.enqueue_for_appservice.assert_called_once_with(
+            interested_service, events=[event]
         )
 
     def test_query_user_exists_unknown_user(self):
@@ -261,7 +269,6 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         """
         interested_service = self._mkservice(is_interested=True)
         services = [interested_service]
-
         self.mock_store.get_app_services.return_value = services
         self.mock_store.get_type_stream_id_for_appservice.return_value = make_awaitable(
             579
@@ -275,10 +282,10 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         self.handler.notify_interested_services_ephemeral(
             "receipt_key", 580, ["@fakerecipient:example.com"]
         )
-        self.mock_scheduler.submit_ephemeral_events_for_as.assert_called_once_with(
-            interested_service, [event]
+        self.mock_scheduler.enqueue_for_appservice.assert_called_once_with(
+            interested_service, ephemeral=[event]
         )
-        self.mock_store.set_type_stream_id_for_appservice.assert_called_once_with(
+        self.mock_store.set_appservice_stream_type_pos.assert_called_once_with(
             interested_service,
             "read_receipt",
             580,
@@ -305,7 +312,10 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         self.handler.notify_interested_services_ephemeral(
             "receipt_key", 580, ["@fakerecipient:example.com"]
         )
-        self.mock_scheduler.submit_ephemeral_events_for_as.assert_not_called()
+        # This method will be called, but with an empty list of events
+        self.mock_scheduler.enqueue_for_appservice.assert_called_once_with(
+            interested_service, ephemeral=[]
+        )
 
     def _mkservice(self, is_interested, protocols=None):
         service = Mock()
@@ -321,3 +331,252 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         service.token = "mock_service_token"
         service.url = "mock_service_url"
         return service
+
+
+class ApplicationServicesHandlerSendEventsTestCase(unittest.HomeserverTestCase):
+    """
+    Tests that the ApplicationServicesHandler sends events to application
+    services correctly.
+    """
+
+    servlets = [
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+        room.register_servlets,
+        sendtodevice.register_servlets,
+        receipts.register_servlets,
+    ]
+
+    def prepare(self, reactor, clock, hs):
+        # Mock the ApplicationServiceScheduler's _TransactionController's send method so that
+        # we can track any outgoing ephemeral events
+        self.send_mock = simple_async_mock()
+        hs.get_application_service_handler().scheduler.txn_ctrl.send = self.send_mock
+
+        # Mock out application services, and allow defining our own in tests
+        self._services: List[ApplicationService] = []
+        self.hs.get_datastore().get_app_services = Mock(return_value=self._services)
+
+        # A user on the homeserver.
+        self.local_user_device_id = "local_device"
+        self.local_user = self.register_user("local_user", "password")
+        self.local_user_token = self.login(
+            "local_user", "password", self.local_user_device_id
+        )
+
+        # A user on the homeserver which lies within an appservice's exclusive user namespace.
+        self.exclusive_as_user_device_id = "exclusive_as_device"
+        self.exclusive_as_user = self.register_user("exclusive_as_user", "password")
+        self.exclusive_as_user_token = self.login(
+            "exclusive_as_user", "password", self.exclusive_as_user_device_id
+        )
+
+    @unittest.override_config(
+        {"experimental_features": {"msc2409_to_device_messages_enabled": True}}
+    )
+    def test_application_services_receive_local_to_device(self):
+        """
+        Test that when a user sends a to-device message to another user
+        that is an application service's user namespace, the
+        application service will receive it.
+        """
+        interested_appservice = self._register_application_service(
+            namespaces={
+                ApplicationService.NS_USERS: [
+                    {
+                        "regex": "@exclusive_as_user:.+",
+                        "exclusive": True,
+                    }
+                ],
+            },
+        )
+
+        # Have local_user send a to-device message to exclusive_as_user
+        message_content = {"some_key": "some really interesting value"}
+        chan = self.make_request(
+            "PUT",
+            "/_matrix/client/r0/sendToDevice/m.room_key_request/3",
+            content={
+                "messages": {
+                    self.exclusive_as_user: {
+                        self.exclusive_as_user_device_id: message_content
+                    }
+                }
+            },
+            access_token=self.local_user_token,
+        )
+        self.assertEqual(chan.code, 200, chan.result)
+
+        # Have exclusive_as_user send a to-device message to local_user
+        chan = self.make_request(
+            "PUT",
+            "/_matrix/client/r0/sendToDevice/m.room_key_request/4",
+            content={
+                "messages": {
+                    self.local_user: {self.local_user_device_id: message_content}
+                }
+            },
+            access_token=self.exclusive_as_user_token,
+        )
+        self.assertEqual(chan.code, 200, chan.result)
+
+        # Check if our application service - that is interested in exclusive_as_user - received
+        # the to-device message as part of an AS transaction.
+        # Only the local_user -> exclusive_as_user to-device message should have been forwarded to the AS.
+        #
+        # The uninterested application service should not have been notified at all.
+        self.send_mock.assert_called_once()
+        service, _events, _ephemeral, to_device_messages = self.send_mock.call_args[0]
+
+        # Assert that this was the same to-device message that local_user sent
+        self.assertEqual(service, interested_appservice)
+        self.assertEqual(to_device_messages[0]["type"], "m.room_key_request")
+        self.assertEqual(to_device_messages[0]["sender"], self.local_user)
+
+        # Additional fields 'to_user_id' and 'to_device_id' specifically for
+        # to-device messages via the AS API
+        self.assertEqual(to_device_messages[0]["to_user_id"], self.exclusive_as_user)
+        self.assertEqual(
+            to_device_messages[0]["to_device_id"], self.exclusive_as_user_device_id
+        )
+        self.assertEqual(to_device_messages[0]["content"], message_content)
+
+    @unittest.override_config(
+        {"experimental_features": {"msc2409_to_device_messages_enabled": True}}
+    )
+    def test_application_services_receive_bursts_of_to_device(self):
+        """
+        Test that when a user sends >100 to-device messages at once, any
+        interested AS's will receive them in separate transactions.
+
+        Also tests that uninterested application services do not receive messages.
+        """
+        # Register two application services with exclusive interest in a user
+        interested_appservices = []
+        for _ in range(2):
+            appservice = self._register_application_service(
+                namespaces={
+                    ApplicationService.NS_USERS: [
+                        {
+                            "regex": "@exclusive_as_user:.+",
+                            "exclusive": True,
+                        }
+                    ],
+                },
+            )
+            interested_appservices.append(appservice)
+
+        # ...and an application service which does not have any user interest.
+        self._register_application_service()
+
+        to_device_message_content = {
+            "some key": "some interesting value",
+        }
+
+        # We need to send a large burst of to-device messages. We also would like to
+        # include them all in the same application service transaction so that we can
+        # test large transactions.
+        #
+        # To do this, we can send a single to-device message to many user devices at
+        # once.
+        #
+        # We insert number_of_messages - 1 messages into the database directly. We'll then
+        # send a final to-device message to the real device, which will also kick off
+        # an AS transaction (as just inserting messages into the DB won't).
+        number_of_messages = 150
+        fake_device_ids = [f"device_{num}" for num in range(number_of_messages - 1)]
+        messages = {
+            self.exclusive_as_user: {
+                device_id: to_device_message_content for device_id in fake_device_ids
+            }
+        }
+
+        # Create a fake device per message. We can't send to-device messages to
+        # a device that doesn't exist.
+        self.get_success(
+            self.hs.get_datastore().db_pool.simple_insert_many(
+                desc="test_application_services_receive_burst_of_to_device",
+                table="devices",
+                keys=("user_id", "device_id"),
+                values=[
+                    (
+                        self.exclusive_as_user,
+                        device_id,
+                    )
+                    for device_id in fake_device_ids
+                ],
+            )
+        )
+
+        # Seed the device_inbox table with our fake messages
+        self.get_success(
+            self.hs.get_datastore().add_messages_to_device_inbox(messages, {})
+        )
+
+        # Now have local_user send a final to-device message to exclusive_as_user. All unsent
+        # to-device messages should be sent to any application services
+        # interested in exclusive_as_user.
+        chan = self.make_request(
+            "PUT",
+            "/_matrix/client/r0/sendToDevice/m.room_key_request/4",
+            content={
+                "messages": {
+                    self.exclusive_as_user: {
+                        self.exclusive_as_user_device_id: to_device_message_content
+                    }
+                }
+            },
+            access_token=self.local_user_token,
+        )
+        self.assertEqual(chan.code, 200, chan.result)
+
+        self.send_mock.assert_called()
+
+        # Count the total number of to-device messages that were sent out per-service.
+        # Ensure that we only sent to-device messages to interested services, and that
+        # each interested service received the full count of to-device messages.
+        service_id_to_message_count: Dict[str, int] = {}
+
+        for call in self.send_mock.call_args_list:
+            service, _events, _ephemeral, to_device_messages = call[0]
+
+            # Check that this was made to an interested service
+            self.assertIn(service, interested_appservices)
+
+            # Add to the count of messages for this application service
+            service_id_to_message_count.setdefault(service.id, 0)
+            service_id_to_message_count[service.id] += len(to_device_messages)
+
+        # Assert that each interested service received the full count of messages
+        for count in service_id_to_message_count.values():
+            self.assertEqual(count, number_of_messages)
+
+    def _register_application_service(
+        self,
+        namespaces: Optional[Dict[str, Iterable[Dict]]] = None,
+    ) -> ApplicationService:
+        """
+        Register a new application service, with the given namespaces of interest.
+
+        Args:
+            namespaces: A dictionary containing any user, room or alias namespaces that
+                the application service is interested in.
+
+        Returns:
+            The registered application service.
+        """
+        # Create an application service
+        appservice = ApplicationService(
+            token=random_string(10),
+            hostname="example.com",
+            id=random_string(10),
+            sender="@as:example.com",
+            rate_limited=False,
+            namespaces=namespaces,
+            supports_ephemeral=True,
+        )
+
+        # Register the application service
+        self._services.append(appservice)
+
+        return appservice