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Use servlets for /key/ endpoints. (#14229) 

To fix the response for unknown endpoints under that prefix.

See MSC3743.
This commit is contained in:
Patrick Cloke 2022-10-20 11:32:47 -04:00 committed by GitHub
parent da2c93d4b6
commit 755bfeee3a
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9 changed files with 86 additions and 83 deletions
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1
changelog.d/14229.misc Normal file
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@ -0,0 +1 @@
Refactor `/key/` endpoints to use `RestServlet` classes.

2
synapse/api/urls.py
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@ -28,7 +28,7 @@ FEDERATION_V1_PREFIX = FEDERATION_PREFIX + "/v1"
FEDERATION_V2_PREFIX = FEDERATION_PREFIX + "/v2"
FEDERATION_UNSTABLE_PREFIX = FEDERATION_PREFIX + "/unstable"
STATIC_PREFIX = "/_matrix/static"
SERVER_KEY_V2_PREFIX = "/_matrix/key/v2"
SERVER_KEY_PREFIX = "/_matrix/key"
MEDIA_R0_PREFIX = "/_matrix/media/r0"
MEDIA_V3_PREFIX = "/_matrix/media/v3"
LEGACY_MEDIA_PREFIX = "/_matrix/media/v1"

20
synapse/app/generic_worker.py
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@ -28,7 +28,7 @@ from synapse.api.urls import (
LEGACY_MEDIA_PREFIX,
MEDIA_R0_PREFIX,
MEDIA_V3_PREFIX,
SERVER_KEY_V2_PREFIX,
SERVER_KEY_PREFIX,
)
from synapse.app import _base
from synapse.app._base import (
@ -89,7 +89,7 @@ from synapse.rest.client.register import (
RegistrationTokenValidityRestServlet,
)
from synapse.rest.health import HealthResource
from synapse.rest.key.v2 import KeyApiV2Resource
from synapse.rest.key.v2 import KeyResource
from synapse.rest.synapse.client import build_synapse_client_resource_tree
from synapse.rest.well_known import well_known_resource
from synapse.server import HomeServer
@ -325,13 +325,13 @@ class GenericWorkerServer(HomeServer):
presence.register_servlets(self, resource)
resources.update({CLIENT_API_PREFIX: resource})
resources[CLIENT_API_PREFIX] = resource
resources.update(build_synapse_client_resource_tree(self))
resources.update({"/.well-known": well_known_resource(self)})
resources["/.well-known"] = well_known_resource(self)
elif name == "federation":
resources.update({FEDERATION_PREFIX: TransportLayerServer(self)})
resources[FEDERATION_PREFIX] = TransportLayerServer(self)
elif name == "media":
if self.config.media.can_load_media_repo:
media_repo = self.get_media_repository_resource()
@ -359,16 +359,12 @@ class GenericWorkerServer(HomeServer):
# Only load the openid resource separately if federation resource
# is not specified since federation resource includes openid
# resource.
resources.update(
{
FEDERATION_PREFIX: TransportLayerServer(
self, servlet_groups=["openid"]
)
}
resources[FEDERATION_PREFIX] = TransportLayerServer(
self, servlet_groups=["openid"]
)
if name in ["keys", "federation"]:
resources[SERVER_KEY_V2_PREFIX] = KeyApiV2Resource(self)
resources[SERVER_KEY_PREFIX] = KeyResource(self)
if name == "replication":
resources[REPLICATION_PREFIX] = ReplicationRestResource(self)

26
synapse/app/homeserver.py
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@ -31,7 +31,7 @@ from synapse.api.urls import (
LEGACY_MEDIA_PREFIX,
MEDIA_R0_PREFIX,
MEDIA_V3_PREFIX,
SERVER_KEY_V2_PREFIX,
SERVER_KEY_PREFIX,
STATIC_PREFIX,
)
from synapse.app import _base
@ -60,7 +60,7 @@ from synapse.replication.http import REPLICATION_PREFIX, ReplicationRestResource
from synapse.rest import ClientRestResource
from synapse.rest.admin import AdminRestResource
from synapse.rest.health import HealthResource
from synapse.rest.key.v2 import KeyApiV2Resource
from synapse.rest.key.v2 import KeyResource
from synapse.rest.synapse.client import build_synapse_client_resource_tree
from synapse.rest.well_known import well_known_resource
from synapse.server import HomeServer
@ -215,30 +215,22 @@ class SynapseHomeServer(HomeServer):
consent_resource: Resource = ConsentResource(self)
if compress:
consent_resource = gz_wrap(consent_resource)
resources.update({"/_matrix/consent": consent_resource})
resources["/_matrix/consent"] = consent_resource
if name == "federation":
federation_resource: Resource = TransportLayerServer(self)
if compress:
federation_resource = gz_wrap(federation_resource)
resources.update({FEDERATION_PREFIX: federation_resource})
resources[FEDERATION_PREFIX] = federation_resource
if name == "openid":
resources.update(
{
FEDERATION_PREFIX: TransportLayerServer(
self, servlet_groups=["openid"]
)
}
resources[FEDERATION_PREFIX] = TransportLayerServer(
self, servlet_groups=["openid"]
)
if name in ["static", "client"]:
resources.update(
{
STATIC_PREFIX: StaticResource(
os.path.join(os.path.dirname(synapse.__file__), "static")
)
}
resources[STATIC_PREFIX] = StaticResource(
os.path.join(os.path.dirname(synapse.__file__), "static")
)
if name in ["media", "federation", "client"]:
@ -257,7 +249,7 @@ class SynapseHomeServer(HomeServer):
)
if name in ["keys", "federation"]:
resources[SERVER_KEY_V2_PREFIX] = KeyApiV2Resource(self)
resources[SERVER_KEY_PREFIX] = KeyResource(self)
if name == "metrics" and self.config.metrics.enable_metrics:
metrics_resource: Resource = MetricsResource(RegistryProxy)

19
synapse/rest/key/v2/__init__.py
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@ -14,17 +14,20 @@
from typing import TYPE_CHECKING
from twisted.web.resource import Resource
from .local_key_resource import LocalKey
from .remote_key_resource import RemoteKey
from synapse.http.server import HttpServer, JsonResource
from synapse.rest.key.v2.local_key_resource import LocalKey
from synapse.rest.key.v2.remote_key_resource import RemoteKey
if TYPE_CHECKING:
from synapse.server import HomeServer
class KeyApiV2Resource(Resource):
class KeyResource(JsonResource):
def __init__(self, hs: "HomeServer"):
Resource.__init__(self)
self.putChild(b"server", LocalKey(hs))
self.putChild(b"query", RemoteKey(hs))
super().__init__(hs, canonical_json=True)
self.register_servlets(self, hs)
@staticmethod
def register_servlets(http_server: HttpServer, hs: "HomeServer") -> None:
LocalKey(hs).register(http_server)
RemoteKey(hs).register(http_server)

22
synapse/rest/key/v2/local_key_resource.py
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@ -13,16 +13,15 @@
# limitations under the License.
import logging
from typing import TYPE_CHECKING, Optional
import re
from typing import TYPE_CHECKING, Optional, Tuple
from canonicaljson import encode_canonical_json
from signedjson.sign import sign_json
from unpaddedbase64 import encode_base64
from twisted.web.resource import Resource
from twisted.web.server import Request
from synapse.http.server import respond_with_json_bytes
from synapse.http.site import SynapseRequest
from synapse.http.servlet import RestServlet
from synapse.types import JsonDict
if TYPE_CHECKING:
@ -31,7 +30,7 @@ if TYPE_CHECKING:
logger = logging.getLogger(__name__)
class LocalKey(Resource):
class LocalKey(RestServlet):
"""HTTP resource containing encoding the TLS X.509 certificate and NACL
signature verification keys for this server::
@ -61,18 +60,17 @@ class LocalKey(Resource):
}
"""
isLeaf = True
PATTERNS = (re.compile("^/_matrix/key/v2/server(/(?P<key_id>[^/]*))?$"),)
def __init__(self, hs: "HomeServer"):
self.config = hs.config
self.clock = hs.get_clock()
self.update_response_body(self.clock.time_msec())
Resource.__init__(self)
def update_response_body(self, time_now_msec: int) -> None:
refresh_interval = self.config.key.key_refresh_interval
self.valid_until_ts = int(time_now_msec + refresh_interval)
self.response_body = encode_canonical_json(self.response_json_object())
self.response_body = self.response_json_object()
def response_json_object(self) -> JsonDict:
verify_keys = {}
@ -99,9 +97,11 @@ class LocalKey(Resource):
json_object = sign_json(json_object, self.config.server.server_name, key)
return json_object
def render_GET(self, request: SynapseRequest) -> Optional[int]:
def on_GET(
self, request: Request, key_id: Optional[str] = None
) -> Tuple[int, JsonDict]:
time_now = self.clock.time_msec()
# Update the expiry time if less than half the interval remains.
if time_now + self.config.key.key_refresh_interval / 2 > self.valid_until_ts:
self.update_response_body(time_now)
return respond_with_json_bytes(request, 200, self.response_body)
return 200, self.response_body

73
synapse/rest/key/v2/remote_key_resource.py
View File

@ -13,15 +13,20 @@
# limitations under the License.
import logging
from typing import TYPE_CHECKING, Dict, Set
import re
from typing import TYPE_CHECKING, Dict, Optional, Set, Tuple
from signedjson.sign import sign_json
from synapse.api.errors import Codes, SynapseError
from twisted.web.server import Request
from synapse.crypto.keyring import ServerKeyFetcher
from synapse.http.server import DirectServeJsonResource, respond_with_json
from synapse.http.servlet import parse_integer, parse_json_object_from_request
from synapse.http.site import SynapseRequest
from synapse.http.server import HttpServer
from synapse.http.servlet import (
RestServlet,
parse_integer,
parse_json_object_from_request,
)
from synapse.types import JsonDict
from synapse.util import json_decoder
from synapse.util.async_helpers import yieldable_gather_results
@ -32,7 +37,7 @@ if TYPE_CHECKING:
logger = logging.getLogger(__name__)
class RemoteKey(DirectServeJsonResource):
class RemoteKey(RestServlet):
"""HTTP resource for retrieving the TLS certificate and NACL signature
verification keys for a collection of servers. Checks that the reported
X.509 TLS certificate matches the one used in the HTTPS connection. Checks
@ -88,11 +93,7 @@ class RemoteKey(DirectServeJsonResource):
}
"""
isLeaf = True
def __init__(self, hs: "HomeServer"):
super().__init__()
self.fetcher = ServerKeyFetcher(hs)
self.store = hs.get_datastores().main
self.clock = hs.get_clock()
@ -101,36 +102,48 @@ class RemoteKey(DirectServeJsonResource):
)
self.config = hs.config
async def _async_render_GET(self, request: SynapseRequest) -> None:
assert request.postpath is not None
if len(request.postpath) == 1:
(server,) = request.postpath
query: dict = {server.decode("ascii"): {}}
elif len(request.postpath) == 2:
server, key_id = request.postpath
def register(self, http_server: HttpServer) -> None:
http_server.register_paths(
"GET",
(
re.compile(
"^/_matrix/key/v2/query/(?P<server>[^/]*)(/(?P<key_id>[^/]*))?$"
),
),
self.on_GET,
self.__class__.__name__,
)
http_server.register_paths(
"POST",
(re.compile("^/_matrix/key/v2/query$"),),
self.on_POST,
self.__class__.__name__,
)
async def on_GET(
self, request: Request, server: str, key_id: Optional[str] = None
) -> Tuple[int, JsonDict]:
if server and key_id:
minimum_valid_until_ts = parse_integer(request, "minimum_valid_until_ts")
arguments = {}
if minimum_valid_until_ts is not None:
arguments["minimum_valid_until_ts"] = minimum_valid_until_ts
query = {server.decode("ascii"): {key_id.decode("ascii"): arguments}}
query = {server: {key_id: arguments}}
else:
raise SynapseError(404, "Not found %r" % request.postpath, Codes.NOT_FOUND)
query = {server: {}}
await self.query_keys(request, query, query_remote_on_cache_miss=True)
return 200, await self.query_keys(query, query_remote_on_cache_miss=True)
async def _async_render_POST(self, request: SynapseRequest) -> None:
async def on_POST(self, request: Request) -> Tuple[int, JsonDict]:
content = parse_json_object_from_request(request)
query = content["server_keys"]
await self.query_keys(request, query, query_remote_on_cache_miss=True)
return 200, await self.query_keys(query, query_remote_on_cache_miss=True)
async def query_keys(
self,
request: SynapseRequest,
query: JsonDict,
query_remote_on_cache_miss: bool = False,
) -> None:
self, query: JsonDict, query_remote_on_cache_miss: bool = False
) -> JsonDict:
logger.info("Handling query for keys %r", query)
store_queries = []
@ -232,7 +245,7 @@ class RemoteKey(DirectServeJsonResource):
for server_name, keys in cache_misses.items()
),
)
await self.query_keys(request, query, query_remote_on_cache_miss=False)
return await self.query_keys(query, query_remote_on_cache_miss=False)
else:
signed_keys = []
for key_json_raw in json_results:
@ -244,6 +257,4 @@ class RemoteKey(DirectServeJsonResource):
signed_keys.append(key_json)
response = {"server_keys": signed_keys}
respond_with_json(request, 200, response, canonical_json=True)
return {"server_keys": signed_keys}

2
tests/app/test_openid_listener.py
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@ -79,7 +79,7 @@ class FederationReaderOpenIDListenerTests(HomeserverTestCase):
self.assertEqual(channel.code, 401)
@patch("synapse.app.homeserver.KeyApiV2Resource", new=Mock())
@patch("synapse.app.homeserver.KeyResource", new=Mock())
class SynapseHomeserverOpenIDListenerTests(HomeserverTestCase):
def make_homeserver(self, reactor, clock):
hs = self.setup_test_homeserver(

4
tests/rest/key/v2/test_remote_key_resource.py
View File

@ -26,7 +26,7 @@ from twisted.web.resource import NoResource, Resource
from synapse.crypto.keyring import PerspectivesKeyFetcher
from synapse.http.site import SynapseRequest
from synapse.rest.key.v2 import KeyApiV2Resource
from synapse.rest.key.v2 import KeyResource
from synapse.server import HomeServer
from synapse.storage.keys import FetchKeyResult
from synapse.types import JsonDict
@ -46,7 +46,7 @@ class BaseRemoteKeyResourceTestCase(unittest.HomeserverTestCase):
def create_test_resource(self) -> Resource:
return create_resource_tree(
{"/_matrix/key/v2": KeyApiV2Resource(self.hs)}, root_resource=NoResource()
{"/_matrix/key/v2": KeyResource(self.hs)}, root_resource=NoResource()
)
def expect_outgoing_key_request(