MatrixSynapse/tests/federation/test_federation_sender.py

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# Copyright 2019 New Vector Ltd
#
# 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.
from typing import Callable, FrozenSet, List, Optional, Set
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from unittest.mock import Mock
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from signedjson import key, sign
from signedjson.types import BaseKey, SigningKey
from twisted.internet import defer
from twisted.test.proto_helpers import MemoryReactor
from synapse.api.constants import EduTypes, RoomEncryptionAlgorithms
from synapse.federation.units import Transaction
from synapse.handlers.device import DeviceHandler
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from synapse.rest import admin
from synapse.rest.client import login
from synapse.server import HomeServer
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from synapse.types import JsonDict, ReadReceipt
from synapse.util import Clock
from tests.test_utils import make_awaitable
from tests.unittest import HomeserverTestCase
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class FederationSenderReceiptsTestCases(HomeserverTestCase):
"""
Test federation sending to update receipts.
By default for test cases federation sending is disabled. This Test class has it
re-enabled for the main process.
"""
def make_homeserver(self, reactor: MemoryReactor, clock: Clock) -> HomeServer:
self.federation_transport_client = Mock(spec=["send_transaction"])
hs = self.setup_test_homeserver(
federation_transport_client=self.federation_transport_client,
)
hs.get_storage_controllers().state.get_current_hosts_in_room = Mock( # type: ignore[assignment]
return_value=make_awaitable({"test", "host2"})
)
hs.get_storage_controllers().state.get_current_hosts_in_room_or_partial_state_approximation = ( # type: ignore[assignment]
hs.get_storage_controllers().state.get_current_hosts_in_room
)
return hs
def default_config(self) -> JsonDict:
config = super().default_config()
config["federation_sender_instances"] = None
return config
def test_send_receipts(self) -> None:
mock_send_transaction = self.federation_transport_client.send_transaction
mock_send_transaction.return_value = make_awaitable({})
sender = self.hs.get_federation_sender()
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receipt = ReadReceipt(
"room_id",
"m.read",
"user_id",
["event_id"],
thread_id=None,
data={"ts": 1234},
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)
self.successResultOf(defer.ensureDeferred(sender.send_read_receipt(receipt)))
self.pump()
# expect a call to send_transaction
mock_send_transaction.assert_called_once()
json_cb = mock_send_transaction.call_args[0][1]
data = json_cb()
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self.assertEqual(
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data["edus"],
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[
{
"edu_type": EduTypes.RECEIPT,
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"content": {
"room_id": {
"m.read": {
"user_id": {
"event_ids": ["event_id"],
"data": {"ts": 1234},
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}
}
}
},
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}
],
)
def test_send_receipts_thread(self) -> None:
mock_send_transaction = self.federation_transport_client.send_transaction
mock_send_transaction.return_value = make_awaitable({})
# Create receipts for:
#
# * The same room / user on multiple threads.
# * A different user in the same room.
sender = self.hs.get_federation_sender()
for user, thread in (
("alice", None),
("alice", "thread"),
("bob", None),
("bob", "diff-thread"),
):
receipt = ReadReceipt(
"room_id",
"m.read",
user,
["event_id"],
thread_id=thread,
data={"ts": 1234},
)
self.successResultOf(
defer.ensureDeferred(sender.send_read_receipt(receipt))
)
self.pump()
# expect a call to send_transaction with two EDUs to separate threads.
mock_send_transaction.assert_called_once()
json_cb = mock_send_transaction.call_args[0][1]
data = json_cb()
# Note that the ordering of the EDUs doesn't matter.
self.assertCountEqual(
data["edus"],
[
{
"edu_type": EduTypes.RECEIPT,
"content": {
"room_id": {
"m.read": {
"alice": {
"event_ids": ["event_id"],
"data": {"ts": 1234, "thread_id": "thread"},
},
"bob": {
"event_ids": ["event_id"],
"data": {"ts": 1234, "thread_id": "diff-thread"},
},
}
}
},
},
{
"edu_type": EduTypes.RECEIPT,
"content": {
"room_id": {
"m.read": {
"alice": {
"event_ids": ["event_id"],
"data": {"ts": 1234},
},
"bob": {
"event_ids": ["event_id"],
"data": {"ts": 1234},
},
}
}
},
},
],
)
def test_send_receipts_with_backoff(self) -> None:
"""Send two receipts in quick succession; the second should be flushed, but
only after 20ms"""
mock_send_transaction = self.federation_transport_client.send_transaction
mock_send_transaction.return_value = make_awaitable({})
sender = self.hs.get_federation_sender()
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receipt = ReadReceipt(
"room_id",
"m.read",
"user_id",
["event_id"],
thread_id=None,
data={"ts": 1234},
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)
self.successResultOf(defer.ensureDeferred(sender.send_read_receipt(receipt)))
self.pump()
# expect a call to send_transaction
mock_send_transaction.assert_called_once()
json_cb = mock_send_transaction.call_args[0][1]
data = json_cb()
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self.assertEqual(
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data["edus"],
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[
{
"edu_type": EduTypes.RECEIPT,
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"content": {
"room_id": {
"m.read": {
"user_id": {
"event_ids": ["event_id"],
"data": {"ts": 1234},
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}
}
}
},
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}
],
)
mock_send_transaction.reset_mock()
# send the second RR
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receipt = ReadReceipt(
"room_id",
"m.read",
"user_id",
["other_id"],
thread_id=None,
data={"ts": 1234},
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)
self.successResultOf(defer.ensureDeferred(sender.send_read_receipt(receipt)))
self.pump()
mock_send_transaction.assert_not_called()
self.reactor.advance(19)
mock_send_transaction.assert_not_called()
self.reactor.advance(10)
mock_send_transaction.assert_called_once()
json_cb = mock_send_transaction.call_args[0][1]
data = json_cb()
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self.assertEqual(
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data["edus"],
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[
{
"edu_type": EduTypes.RECEIPT,
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"content": {
"room_id": {
"m.read": {
"user_id": {
"event_ids": ["other_id"],
"data": {"ts": 1234},
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}
}
}
},
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}
],
)
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class FederationSenderDevicesTestCases(HomeserverTestCase):
"""
Test federation sending to update devices.
By default for test cases federation sending is disabled. This Test class has it
re-enabled for the main process.
"""
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servlets = [
admin.register_servlets,
login.register_servlets,
]
def make_homeserver(self, reactor: MemoryReactor, clock: Clock) -> HomeServer:
self.federation_transport_client = Mock(
spec=["send_transaction", "query_user_devices"]
)
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return self.setup_test_homeserver(
federation_transport_client=self.federation_transport_client,
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)
def default_config(self) -> JsonDict:
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c = super().default_config()
# Enable federation sending on the main process.
c["federation_sender_instances"] = None
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return c
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
test_room_id = "!room:host1"
# stub out `get_rooms_for_user` and `get_current_hosts_in_room` so that the
# server thinks the user shares a room with `@user2:host2`
def get_rooms_for_user(user_id: str) -> "defer.Deferred[FrozenSet[str]]":
return defer.succeed(frozenset({test_room_id}))
hs.get_datastores().main.get_rooms_for_user = get_rooms_for_user # type: ignore[assignment]
async def get_current_hosts_in_room(room_id: str) -> Set[str]:
if room_id == test_room_id:
return {"host2"}
else:
# TODO: We should fail the test when we encounter an unxpected room ID.
# We can't just use `self.fail(...)` here because the app code is greedy
# with `Exception` and will catch it before the test can see it.
return set()
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hs.get_datastores().main.get_current_hosts_in_room = get_current_hosts_in_room # type: ignore[assignment]
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device_handler = hs.get_device_handler()
assert isinstance(device_handler, DeviceHandler)
self.device_handler = device_handler
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# whenever send_transaction is called, record the edu data
self.edus: List[JsonDict] = []
self.federation_transport_client.send_transaction.side_effect = (
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self.record_transaction
)
def record_transaction(
self, txn: Transaction, json_cb: Optional[Callable[[], JsonDict]] = None
) -> "defer.Deferred[JsonDict]":
assert json_cb is not None
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data = json_cb()
self.edus.extend(data["edus"])
return defer.succeed({})
def test_send_device_updates(self) -> None:
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"""Basic case: each device update should result in an EDU"""
# create a device
u1 = self.register_user("user", "pass")
self.login(u1, "pass", device_id="D1")
# expect one edu
self.assertEqual(len(self.edus), 1)
stream_id = self.check_device_update_edu(self.edus.pop(0), u1, "D1", None)
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
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# a second call should produce no new device EDUs
self.hs.get_federation_sender().send_device_messages("host2")
self.assertEqual(self.edus, [])
# a second device
self.login("user", "pass", device_id="D2")
self.assertEqual(len(self.edus), 1)
self.check_device_update_edu(self.edus.pop(0), u1, "D2", stream_id)
def test_dont_send_device_updates_for_remote_users(self) -> None:
"""Check that we don't send device updates for remote users"""
# Send the server a device list EDU for the other user, this will cause
# it to try and resync the device lists.
self.federation_transport_client.query_user_devices.return_value = (
make_awaitable(
{
"stream_id": "1",
"user_id": "@user2:host2",
"devices": [{"device_id": "D1"}],
}
)
)
self.get_success(
self.device_handler.device_list_updater.incoming_device_list_update(
"host2",
{
"user_id": "@user2:host2",
"device_id": "D1",
"stream_id": "1",
"prev_ids": [],
},
)
)
self.reactor.advance(1)
# We shouldn't see an EDU for that update
self.assertEqual(self.edus, [])
# Check that we did successfully process the inbound EDU (otherwise this
# test would pass if we failed to process the EDU)
devices = self.get_success(
self.hs.get_datastores().main.get_cached_devices_for_user("@user2:host2")
)
self.assertIn("D1", devices)
def test_upload_signatures(self) -> None:
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"""Uploading signatures on some devices should produce updates for that user"""
e2e_handler = self.hs.get_e2e_keys_handler()
# register two devices
u1 = self.register_user("user", "pass")
self.login(u1, "pass", device_id="D1")
self.login(u1, "pass", device_id="D2")
# expect two edus
self.assertEqual(len(self.edus), 2)
stream_id: Optional[int] = None
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stream_id = self.check_device_update_edu(self.edus.pop(0), u1, "D1", stream_id)
stream_id = self.check_device_update_edu(self.edus.pop(0), u1, "D2", stream_id)
# upload signing keys for each device
device1_signing_key = self.generate_and_upload_device_signing_key(u1, "D1")
device2_signing_key = self.generate_and_upload_device_signing_key(u1, "D2")
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
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# expect two more edus
self.assertEqual(len(self.edus), 2)
stream_id = self.check_device_update_edu(self.edus.pop(0), u1, "D1", stream_id)
stream_id = self.check_device_update_edu(self.edus.pop(0), u1, "D2", stream_id)
# upload master key and self-signing key
master_signing_key = generate_self_id_key()
master_key = {
"user_id": u1,
"usage": ["master"],
"keys": {key_id(master_signing_key): encode_pubkey(master_signing_key)},
}
# private key: HvQBbU+hc2Zr+JP1sE0XwBe1pfZZEYtJNPJLZJtS+F8
selfsigning_signing_key = generate_self_id_key()
selfsigning_key = {
"user_id": u1,
"usage": ["self_signing"],
"keys": {
key_id(selfsigning_signing_key): encode_pubkey(selfsigning_signing_key)
},
}
sign.sign_json(selfsigning_key, u1, master_signing_key)
cross_signing_keys = {
"master_key": master_key,
"self_signing_key": selfsigning_key,
}
self.get_success(
e2e_handler.upload_signing_keys_for_user(u1, cross_signing_keys)
)
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
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# expect signing key update edu
self.assertEqual(len(self.edus), 2)
self.assertEqual(self.edus.pop(0)["edu_type"], EduTypes.SIGNING_KEY_UPDATE)
self.assertEqual(
self.edus.pop(0)["edu_type"], EduTypes.UNSTABLE_SIGNING_KEY_UPDATE
)
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# sign the devices
d1_json = build_device_dict(u1, "D1", device1_signing_key)
sign.sign_json(d1_json, u1, selfsigning_signing_key)
d2_json = build_device_dict(u1, "D2", device2_signing_key)
sign.sign_json(d2_json, u1, selfsigning_signing_key)
ret = self.get_success(
e2e_handler.upload_signatures_for_device_keys(
u1,
{u1: {"D1": d1_json, "D2": d2_json}},
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)
)
self.assertEqual(ret["failures"], {})
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
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# expect two edus, in one or two transactions. We don't know what order the
# devices will be updated.
self.assertEqual(len(self.edus), 2)
stream_id = None # FIXME: there is a discontinuity in the stream IDs: see #7142
for edu in self.edus:
self.assertEqual(edu["edu_type"], EduTypes.DEVICE_LIST_UPDATE)
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c = edu["content"]
if stream_id is not None:
self.assertEqual(c["prev_id"], [stream_id]) # type: ignore[unreachable]
self.assertGreaterEqual(c["stream_id"], stream_id)
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stream_id = c["stream_id"]
devices = {edu["content"]["device_id"] for edu in self.edus}
self.assertEqual({"D1", "D2"}, devices)
def test_delete_devices(self) -> None:
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"""If devices are deleted, that should result in EDUs too"""
# create devices
u1 = self.register_user("user", "pass")
self.login("user", "pass", device_id="D1")
self.login("user", "pass", device_id="D2")
self.login("user", "pass", device_id="D3")
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
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# expect three edus
self.assertEqual(len(self.edus), 3)
stream_id = self.check_device_update_edu(self.edus.pop(0), u1, "D1", None)
stream_id = self.check_device_update_edu(self.edus.pop(0), u1, "D2", stream_id)
stream_id = self.check_device_update_edu(self.edus.pop(0), u1, "D3", stream_id)
# delete them again
self.get_success(self.device_handler.delete_devices(u1, ["D1", "D2", "D3"]))
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# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
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# expect three edus, in an unknown order
self.assertEqual(len(self.edus), 3)
for edu in self.edus:
self.assertEqual(edu["edu_type"], EduTypes.DEVICE_LIST_UPDATE)
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c = edu["content"]
self.assertGreaterEqual(
c.items(),
{"user_id": u1, "prev_id": [stream_id], "deleted": True}.items(),
)
self.assertGreaterEqual(c["stream_id"], stream_id)
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stream_id = c["stream_id"]
devices = {edu["content"]["device_id"] for edu in self.edus}
self.assertEqual({"D1", "D2", "D3"}, devices)
def test_unreachable_server(self) -> None:
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"""If the destination server is unreachable, all the updates should get sent on
recovery
"""
mock_send_txn = self.federation_transport_client.send_transaction
mock_send_txn.side_effect = lambda t, cb: defer.fail(AssertionError("fail"))
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# create devices
u1 = self.register_user("user", "pass")
self.login("user", "pass", device_id="D1")
self.login("user", "pass", device_id="D2")
self.login("user", "pass", device_id="D3")
# delete them again
self.get_success(self.device_handler.delete_devices(u1, ["D1", "D2", "D3"]))
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# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
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self.assertGreaterEqual(mock_send_txn.call_count, 4)
# recover the server
mock_send_txn.side_effect = self.record_transaction
self.hs.get_federation_sender().send_device_messages("host2")
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
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# for each device, there should be a single update
self.assertEqual(len(self.edus), 3)
stream_id: Optional[int] = None
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for edu in self.edus:
self.assertEqual(edu["edu_type"], EduTypes.DEVICE_LIST_UPDATE)
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c = edu["content"]
self.assertEqual(c["prev_id"], [stream_id] if stream_id is not None else [])
if stream_id is not None:
self.assertGreaterEqual(c["stream_id"], stream_id)
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stream_id = c["stream_id"]
devices = {edu["content"]["device_id"] for edu in self.edus}
self.assertEqual({"D1", "D2", "D3"}, devices)
def test_prune_outbound_device_pokes1(self) -> None:
"""If a destination is unreachable, and the updates are pruned, we should get
a single update.
This case tests the behaviour when the server has never been reachable.
"""
mock_send_txn = self.federation_transport_client.send_transaction
mock_send_txn.side_effect = lambda t, cb: defer.fail(AssertionError("fail"))
# create devices
u1 = self.register_user("user", "pass")
self.login("user", "pass", device_id="D1")
self.login("user", "pass", device_id="D2")
self.login("user", "pass", device_id="D3")
# delete them again
self.get_success(self.device_handler.delete_devices(u1, ["D1", "D2", "D3"]))
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
self.assertGreaterEqual(mock_send_txn.call_count, 4)
# run the prune job
self.reactor.advance(10)
self.get_success(
self.hs.get_datastores().main._prune_old_outbound_device_pokes(prune_age=1)
)
# recover the server
mock_send_txn.side_effect = self.record_transaction
self.hs.get_federation_sender().send_device_messages("host2")
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
# there should be a single update for this user.
self.assertEqual(len(self.edus), 1)
edu = self.edus.pop(0)
self.assertEqual(edu["edu_type"], EduTypes.DEVICE_LIST_UPDATE)
c = edu["content"]
# synapse uses an empty prev_id list to indicate "needs a full resync".
self.assertEqual(c["prev_id"], [])
def test_prune_outbound_device_pokes2(self) -> None:
"""If a destination is unreachable, and the updates are pruned, we should get
a single update.
This case tests the behaviour when the server was reachable, but then goes
offline.
"""
# create first device
u1 = self.register_user("user", "pass")
self.login("user", "pass", device_id="D1")
# expect the update EDU
self.assertEqual(len(self.edus), 1)
self.check_device_update_edu(self.edus.pop(0), u1, "D1", None)
# now the server goes offline
mock_send_txn = self.federation_transport_client.send_transaction
mock_send_txn.side_effect = lambda t, cb: defer.fail(AssertionError("fail"))
self.login("user", "pass", device_id="D2")
self.login("user", "pass", device_id="D3")
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
# delete them again
self.get_success(self.device_handler.delete_devices(u1, ["D1", "D2", "D3"]))
self.assertGreaterEqual(mock_send_txn.call_count, 3)
# run the prune job
self.reactor.advance(10)
self.get_success(
self.hs.get_datastores().main._prune_old_outbound_device_pokes(prune_age=1)
)
# recover the server
mock_send_txn.side_effect = self.record_transaction
self.hs.get_federation_sender().send_device_messages("host2")
# We queue up device list updates to be sent over federation, so we
# advance to clear the queue.
self.reactor.advance(1)
# ... and we should get a single update for this user.
self.assertEqual(len(self.edus), 1)
edu = self.edus.pop(0)
self.assertEqual(edu["edu_type"], EduTypes.DEVICE_LIST_UPDATE)
c = edu["content"]
# synapse uses an empty prev_id list to indicate "needs a full resync".
self.assertEqual(c["prev_id"], [])
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def check_device_update_edu(
self,
edu: JsonDict,
user_id: str,
device_id: str,
prev_stream_id: Optional[int],
) -> int:
"""Check that the given EDU is an update for the given device
Returns the stream_id.
"""
self.assertEqual(edu["edu_type"], EduTypes.DEVICE_LIST_UPDATE)
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content = edu["content"]
expected = {
"user_id": user_id,
"device_id": device_id,
"prev_id": [prev_stream_id] if prev_stream_id is not None else [],
}
self.assertLessEqual(expected.items(), content.items())
if prev_stream_id is not None:
self.assertGreaterEqual(content["stream_id"], prev_stream_id)
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return content["stream_id"]
def check_signing_key_update_txn(
self,
txn: JsonDict,
) -> None:
"""Check that the txn has an EDU with a signing key update."""
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edus = txn["edus"]
self.assertEqual(len(edus), 2)
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def generate_and_upload_device_signing_key(
self, user_id: str, device_id: str
) -> SigningKey:
"""Generate a signing keypair for the given device, and upload it"""
sk = key.generate_signing_key(device_id)
device_dict = build_device_dict(user_id, device_id, sk)
self.get_success(
self.hs.get_e2e_keys_handler().upload_keys_for_user(
user_id,
device_id,
{"device_keys": device_dict},
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)
)
return sk
def generate_self_id_key() -> SigningKey:
"""generate a signing key whose version is its public key
... as used by the cross-signing-keys.
"""
k = key.generate_signing_key("x")
k.version = encode_pubkey(k)
return k
def key_id(k: BaseKey) -> str:
return "%s:%s" % (k.alg, k.version)
def encode_pubkey(sk: SigningKey) -> str:
"""Encode the public key corresponding to the given signing key as base64"""
return key.encode_verify_key_base64(key.get_verify_key(sk))
def build_device_dict(user_id: str, device_id: str, sk: SigningKey) -> JsonDict:
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"""Build a dict representing the given device"""
return {
"user_id": user_id,
"device_id": device_id,
"algorithms": [
"m.olm.curve25519-aes-sha2",
RoomEncryptionAlgorithms.MEGOLM_V1_AES_SHA2,
],
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"keys": {
"curve25519:" + device_id: "curve25519+key",
key_id(sk): encode_pubkey(sk),
},
}