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Tests: replace mocked Authenticator with the real thing (#11913) 

If we prepopulate the test homeserver with a key for a remote homeserver, we
can make federation requests to it without having to stub out the
authenticator. This has two advantages:

 * means that what we are testing is closer to reality (ie, we now have
   complete tests for the incoming-request-authorisation flow)

 * some tests require that other objects be signed by the remote server (eg,
   the event in `/send_join`), and doing that would require a whole separate
   set of mocking out. It's much simpler just to use real keys.
This commit is contained in:
Richard van der Hoff 2022-02-11 12:06:02 +00:00 committed by GitHub
parent d36943c4df
commit c3db7a0b59
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7 changed files with 117 additions and 44 deletions
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1
changelog.d/11913.misc Normal file
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@ -0,0 +1 @@
Tests: replace mocked `Authenticator` with the real thing.

4
tests/federation/test_complexity.py
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@ -47,7 +47,7 @@ class RoomComplexityTests(unittest.FederatingHomeserverTestCase):
)
# Get the room complexity
channel = self.make_request(
channel = self.make_signed_federation_request(
"GET", "/_matrix/federation/unstable/rooms/%s/complexity" % (room_1,)
)
self.assertEquals(200, channel.code)
@ -59,7 +59,7 @@ class RoomComplexityTests(unittest.FederatingHomeserverTestCase):
store.get_current_state_event_counts = lambda x: make_awaitable(500 * 1.23)
# Get the room complexity again -- make sure it's our artificial value
channel = self.make_request(
channel = self.make_signed_federation_request(
"GET", "/_matrix/federation/unstable/rooms/%s/complexity" % (room_1,)
)
self.assertEquals(200, channel.code)

4
tests/federation/test_federation_server.py
View File

@ -113,7 +113,7 @@ class StateQueryTests(unittest.FederatingHomeserverTestCase):
room_1 = self.helper.create_room_as(u1, tok=u1_token)
self.inject_room_member(room_1, "@user:other.example.com", "join")
channel = self.make_request(
channel = self.make_signed_federation_request(
"GET", "/_matrix/federation/v1/state/%s" % (room_1,)
)
self.assertEquals(200, channel.code, channel.result)
@ -145,7 +145,7 @@ class StateQueryTests(unittest.FederatingHomeserverTestCase):
room_1 = self.helper.create_room_as(u1, tok=u1_token)
channel = self.make_request(
channel = self.make_signed_federation_request(
"GET", "/_matrix/federation/v1/state/%s" % (room_1,)
)
self.assertEquals(403, channel.code, channel.result)

4
tests/federation/transport/test_knocking.py
View File

@ -245,7 +245,7 @@ class FederationKnockingTestCase(
self.hs, room_id, user_id
)
channel = self.make_request(
channel = self.make_signed_federation_request(
"GET",
"/_matrix/federation/v1/make_knock/%s/%s?ver=%s"
% (
@ -288,7 +288,7 @@ class FederationKnockingTestCase(
)
# Send the signed knock event into the room
channel = self.make_request(
channel = self.make_signed_federation_request(
"PUT",
"/_matrix/federation/v1/send_knock/%s/%s"
% (room_id, signed_knock_event.event_id),

6
tests/federation/transport/test_server.py
View File

@ -22,10 +22,9 @@ class RoomDirectoryFederationTests(unittest.FederatingHomeserverTestCase):
"""Test that unauthenticated requests to the public rooms directory 403 when
allow_public_rooms_over_federation is False.
"""
channel = self.make_request(
channel = self.make_signed_federation_request(
"GET",
"/_matrix/federation/v1/publicRooms",
federation_auth_origin=b"example.com",
)
self.assertEquals(403, channel.code)
@ -34,9 +33,8 @@ class RoomDirectoryFederationTests(unittest.FederatingHomeserverTestCase):
"""Test that unauthenticated requests to the public rooms directory 200 when
allow_public_rooms_over_federation is True.
"""
channel = self.make_request(
channel = self.make_signed_federation_request(
"GET",
"/_matrix/federation/v1/publicRooms",
federation_auth_origin=b"example.com",
)
self.assertEquals(200, channel.code)

6
tests/rest/client/test_third_party_rules.py
View File

@ -107,6 +107,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
return hs
def prepare(self, reactor, clock, homeserver):
super().prepare(reactor, clock, homeserver)
# Create some users and a room to play with during the tests
self.user_id = self.register_user("kermit", "monkey")
self.invitee = self.register_user("invitee", "hackme")
@ -473,8 +474,6 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
def _send_event_over_federation(self) -> None:
"""Send a dummy event over federation and check that the request succeeds."""
body = {
"origin": self.hs.config.server.server_name,
"origin_server_ts": self.clock.time_msec(),
"pdus": [
{
"sender": self.user_id,
@ -492,11 +491,10 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
],
}
channel = self.make_request(
channel = self.make_signed_federation_request(
method="PUT",
path="/_matrix/federation/v1/send/1",
content=body,
federation_auth_origin=self.hs.config.server.server_name.encode("utf8"),
)
self.assertEqual(channel.code, 200, channel.result)

132
tests/unittest.py
View File

@ -17,6 +17,7 @@ import gc
import hashlib
import hmac
import inspect
import json
import logging
import secrets
import time
@ -36,9 +37,11 @@ from typing import (
)
from unittest.mock import Mock, patch
from canonicaljson import json
import canonicaljson
import signedjson.key
import unpaddedbase64
from twisted.internet.defer import Deferred, ensureDeferred, succeed
from twisted.internet.defer import Deferred, ensureDeferred
from twisted.python.failure import Failure
from twisted.python.threadpool import ThreadPool
from twisted.test.proto_helpers import MemoryReactor
@ -49,8 +52,7 @@ from twisted.web.server import Request
from synapse import events
from synapse.api.constants import EventTypes, Membership
from synapse.config.homeserver import HomeServerConfig
from synapse.config.ratelimiting import FederationRateLimitConfig
from synapse.federation.transport import server as federation_server
from synapse.federation.transport.server import TransportLayerServer
from synapse.http.server import JsonResource
from synapse.http.site import SynapseRequest, SynapseSite
from synapse.logging.context import (
@ -61,10 +63,10 @@ from synapse.logging.context import (
)
from synapse.rest import RegisterServletsFunc
from synapse.server import HomeServer
from synapse.storage.keys import FetchKeyResult
from synapse.types import JsonDict, UserID, create_requester
from synapse.util import Clock
from synapse.util.httpresourcetree import create_resource_tree
from synapse.util.ratelimitutils import FederationRateLimiter
from tests.server import FakeChannel, get_clock, make_request, setup_test_homeserver
from tests.test_utils import event_injection, setup_awaitable_errors
@ -755,42 +757,116 @@ class HomeserverTestCase(TestCase):
class FederatingHomeserverTestCase(HomeserverTestCase):
"""
A federating homeserver that authenticates incoming requests as `other.example.com`.
A federating homeserver, set up to validate incoming federation requests
"""
OTHER_SERVER_NAME = "other.example.com"
OTHER_SERVER_SIGNATURE_KEY = signedjson.key.generate_signing_key("test")
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer):
super().prepare(reactor, clock, hs)
# poke the other server's signing key into the key store, so that we don't
# make requests for it
verify_key = signedjson.key.get_verify_key(self.OTHER_SERVER_SIGNATURE_KEY)
verify_key_id = "%s:%s" % (verify_key.alg, verify_key.version)
self.get_success(
hs.get_datastore().store_server_verify_keys(
from_server=self.OTHER_SERVER_NAME,
ts_added_ms=clock.time_msec(),
verify_keys=[
(
self.OTHER_SERVER_NAME,
verify_key_id,
FetchKeyResult(
verify_key=verify_key,
valid_until_ts=clock.time_msec() + 1000,
),
)
],
)
)
def create_resource_dict(self) -> Dict[str, Resource]:
d = super().create_resource_dict()
d["/_matrix/federation"] = TestTransportLayerServer(self.hs)
d["/_matrix/federation"] = TransportLayerServer(self.hs)
return d
def make_signed_federation_request(
self,
method: str,
path: str,
content: Optional[JsonDict] = None,
await_result: bool = True,
custom_headers: Optional[Iterable[Tuple[AnyStr, AnyStr]]] = None,
client_ip: str = "127.0.0.1",
) -> FakeChannel:
"""Make an inbound signed federation request to this server
class TestTransportLayerServer(JsonResource):
"""A test implementation of TransportLayerServer
authenticates incoming requests as `other.example.com`.
The request is signed as if it came from "other.example.com", which our HS
already has the keys for.
"""
def __init__(self, hs):
super().__init__(hs)
if custom_headers is None:
custom_headers = []
else:
custom_headers = list(custom_headers)
class Authenticator:
def authenticate_request(self, request, content):
return succeed("other.example.com")
authenticator = Authenticator()
ratelimiter = FederationRateLimiter(
hs.get_clock(),
FederationRateLimitConfig(
window_size=1,
sleep_limit=1,
sleep_delay=1,
reject_limit=1000,
concurrent=1000,
custom_headers.append(
(
"Authorization",
_auth_header_for_request(
origin=self.OTHER_SERVER_NAME,
destination=self.hs.hostname,
signing_key=self.OTHER_SERVER_SIGNATURE_KEY,
method=method,
path=path,
content=content,
),
)
)
federation_server.register_servlets(hs, self, authenticator, ratelimiter)
return make_request(
self.reactor,
self.site,
method=method,
path=path,
content=content,
shorthand=False,
await_result=await_result,
custom_headers=custom_headers,
client_ip=client_ip,
)
def _auth_header_for_request(
origin: str,
destination: str,
signing_key: signedjson.key.SigningKey,
method: str,
path: str,
content: Optional[JsonDict],
) -> str:
"""Build a suitable Authorization header for an outgoing federation request"""
request_description: JsonDict = {
"method": method,
"uri": path,
"destination": destination,
"origin": origin,
}
if content is not None:
request_description["content"] = content
signature_base64 = unpaddedbase64.encode_base64(
signing_key.sign(
canonicaljson.encode_canonical_json(request_description)
).signature
)
return (
f"X-Matrix origin={origin},"
f"key={signing_key.alg}:{signing_key.version},"
f"sig={signature_base64}"
)
def override_config(extra_config):