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Implement knock feature (#6739)

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This PR aims to implement the knock feature as proposed in https://github.com/matrix-org/matrix-doc/pull/2403

Signed-off-by: Sorunome mail@sorunome.de
Signed-off-by: Andrew Morgan andrewm@element.io
This commit is contained in:
Sorunome 2021-06-09 20:39:51 +02:00 • committed by GitHub
parent 11846dff8c
commit d936371b69
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29 changed files with 1614 additions and 119 deletions
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5
synapse/rest/__init__.py
View file

@ -38,6 +38,7 @@ from synapse.rest.client.v2_alpha import (
filter,
groups,
keys,
knock,
notifications,
openid,
password_policy,
@ -121,6 +122,10 @@ class ClientRestResource(JsonResource):
relations.register_servlets(hs, client_resource)
password_policy.register_servlets(hs, client_resource)
# Register msc2403 (knocking) servlets if the feature is enabled
if hs.config.experimental.msc2403_enabled:
knock.register_servlets(hs, client_resource)
# moving to /_synapse/admin
admin.register_servlets_for_client_rest_resource(hs, client_resource)

28
synapse/rest/client/v1/room.py
View file

@ -14,10 +14,9 @@
# limitations under the License.
""" This module contains REST servlets to do with rooms: /rooms/<paths> """
import logging
import re
from typing import TYPE_CHECKING, List, Optional, Tuple
from typing import TYPE_CHECKING, Dict, List, Optional, Tuple
from urllib import parse as urlparse
from synapse.api.constants import EventTypes, Membership
@ -38,6 +37,7 @@ from synapse.http.servlet import (
parse_integer,
parse_json_object_from_request,
parse_string,
parse_strings_from_args,
)
from synapse.http.site import SynapseRequest
from synapse.logging.opentracing import set_tag
@ -278,7 +278,12 @@ class JoinRoomAliasServlet(TransactionRestServlet):
PATTERNS = "/join/(?P<room_identifier>[^/]*)"
register_txn_path(self, PATTERNS, http_server)
async def on_POST(self, request, room_identifier, txn_id=None):
async def on_POST(
self,
request: SynapseRequest,
room_identifier: str,
txn_id: Optional[str] = None,
):
requester = await self.auth.get_user_by_req(request, allow_guest=True)
try:
@ -290,17 +295,18 @@ class JoinRoomAliasServlet(TransactionRestServlet):
if RoomID.is_valid(room_identifier):
room_id = room_identifier
try:
remote_room_hosts = [
x.decode("ascii") for x in request.args[b"server_name"]
] # type: Optional[List[str]]
except Exception:
remote_room_hosts = None
# twisted.web.server.Request.args is incorrectly defined as Optional[Any]
args: Dict[bytes, List[bytes]] = request.args # type: ignore
remote_room_hosts = parse_strings_from_args(
args, "server_name", required=False
)
elif RoomAlias.is_valid(room_identifier):
handler = self.room_member_handler
room_alias = RoomAlias.from_string(room_identifier)
room_id, remote_room_hosts = await handler.lookup_room_alias(room_alias)
room_id = room_id.to_string()
room_id_obj, remote_room_hosts = await handler.lookup_room_alias(room_alias)
room_id = room_id_obj.to_string()
else:
raise SynapseError(
400, "%s was not legal room ID or room alias" % (room_identifier,)

109
synapse/rest/client/v2_alpha/knock.py Normal file
View file

@ -0,0 +1,109 @@
# Copyright 2020 Sorunome
# Copyright 2020 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.
# 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.
import logging
from typing import TYPE_CHECKING, Dict, List, Optional, Tuple
from twisted.web.server import Request
from synapse.api.constants import Membership
from synapse.api.errors import SynapseError
from synapse.http.servlet import (
RestServlet,
parse_json_object_from_request,
parse_strings_from_args,
)
from synapse.http.site import SynapseRequest
from synapse.logging.opentracing import set_tag
from synapse.rest.client.transactions import HttpTransactionCache
from synapse.types import JsonDict, RoomAlias, RoomID
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
from ._base import client_patterns
logger = logging.getLogger(__name__)
class KnockRoomAliasServlet(RestServlet):
"""
POST /xyz.amorgan.knock/{roomIdOrAlias}
"""
PATTERNS = client_patterns(
"/xyz.amorgan.knock/(?P<room_identifier>[^/]*)", releases=()
)
def __init__(self, hs: "HomeServer"):
super().__init__()
self.txns = HttpTransactionCache(hs)
self.room_member_handler = hs.get_room_member_handler()
self.auth = hs.get_auth()
async def on_POST(
self,
request: SynapseRequest,
room_identifier: str,
txn_id: Optional[str] = None,
) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
content = parse_json_object_from_request(request)
event_content = None
if "reason" in content:
event_content = {"reason": content["reason"]}
if RoomID.is_valid(room_identifier):
room_id = room_identifier
# twisted.web.server.Request.args is incorrectly defined as Optional[Any]
args: Dict[bytes, List[bytes]] = request.args # type: ignore
remote_room_hosts = parse_strings_from_args(
args, "server_name", required=False
)
elif RoomAlias.is_valid(room_identifier):
handler = self.room_member_handler
room_alias = RoomAlias.from_string(room_identifier)
room_id_obj, remote_room_hosts = await handler.lookup_room_alias(room_alias)
room_id = room_id_obj.to_string()
else:
raise SynapseError(
400, "%s was not legal room ID or room alias" % (room_identifier,)
)
await self.room_member_handler.update_membership(
requester=requester,
target=requester.user,
room_id=room_id,
action=Membership.KNOCK,
txn_id=txn_id,
third_party_signed=None,
remote_room_hosts=remote_room_hosts,
content=event_content,
)
return 200, {"room_id": room_id}
def on_PUT(self, request: Request, room_identifier: str, txn_id: str):
set_tag("txn_id", txn_id)
return self.txns.fetch_or_execute_request(
request, self.on_POST, request, room_identifier, txn_id
)
def register_servlets(hs, http_server):
KnockRoomAliasServlet(hs).register(http_server)

82
synapse/rest/client/v2_alpha/sync.py
View file

@ -11,12 +11,11 @@
# 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.
import itertools
import logging
from typing import TYPE_CHECKING, Tuple
from typing import TYPE_CHECKING, Any, Callable, Dict, List, Tuple
from synapse.api.constants import PresenceState
from synapse.api.constants import Membership, PresenceState
from synapse.api.errors import Codes, StoreError, SynapseError
from synapse.api.filtering import DEFAULT_FILTER_COLLECTION, FilterCollection
from synapse.events.utils import (
@ -24,7 +23,7 @@ from synapse.events.utils import (
format_event_raw,
)
from synapse.handlers.presence import format_user_presence_state
from synapse.handlers.sync import SyncConfig
from synapse.handlers.sync import KnockedSyncResult, SyncConfig
from synapse.http.servlet import RestServlet, parse_boolean, parse_integer, parse_string
from synapse.http.site import SynapseRequest
from synapse.types import JsonDict, StreamToken
@ -220,6 +219,10 @@ class SyncRestServlet(RestServlet):
sync_result.invited, time_now, access_token_id, event_formatter
)
knocked = await self.encode_knocked(
sync_result.knocked, time_now, access_token_id, event_formatter
)
archived = await self.encode_archived(
sync_result.archived,
time_now,
@ -237,11 +240,16 @@ class SyncRestServlet(RestServlet):
"left": list(sync_result.device_lists.left),
},
"presence": SyncRestServlet.encode_presence(sync_result.presence, time_now),
"rooms": {"join": joined, "invite": invited, "leave": archived},
"rooms": {
Membership.JOIN: joined,
Membership.INVITE: invited,
Membership.KNOCK: knocked,
Membership.LEAVE: archived,
},
"groups": {
"join": sync_result.groups.join,
"invite": sync_result.groups.invite,
"leave": sync_result.groups.leave,
Membership.JOIN: sync_result.groups.join,
Membership.INVITE: sync_result.groups.invite,
Membership.LEAVE: sync_result.groups.leave,
},
"device_one_time_keys_count": sync_result.device_one_time_keys_count,
"org.matrix.msc2732.device_unused_fallback_key_types": sync_result.device_unused_fallback_key_types,
@ -303,7 +311,7 @@ class SyncRestServlet(RestServlet):
Args:
rooms(list[synapse.handlers.sync.InvitedSyncResult]): list of
sync results for rooms this user is joined to
sync results for rooms this user is invited to
time_now(int): current time - used as a baseline for age
calculations
token_id(int): ID of the user's auth token - used for namespacing
@ -322,7 +330,7 @@ class SyncRestServlet(RestServlet):
time_now,
token_id=token_id,
event_format=event_formatter,
is_invite=True,
include_stripped_room_state=True,
)
unsigned = dict(invite.get("unsigned", {}))
invite["unsigned"] = unsigned
@ -332,6 +340,60 @@ class SyncRestServlet(RestServlet):
return invited
async def encode_knocked(
self,
rooms: List[KnockedSyncResult],
time_now: int,
token_id: int,
event_formatter: Callable[[Dict], Dict],
) -> Dict[str, Dict[str, Any]]:
"""
Encode the rooms we've knocked on in a sync result.
Args:
rooms: list of sync results for rooms this user is knocking on
time_now: current time - used as a baseline for age calculations
token_id: ID of the user's auth token - used for namespacing of transaction IDs
event_formatter: function to convert from federation format to client format
Returns:
The list of rooms the user has knocked on, in our response format.
"""
knocked = {}
for room in rooms:
knock = await self._event_serializer.serialize_event(
room.knock,
time_now,
token_id=token_id,
event_format=event_formatter,
include_stripped_room_state=True,
)
# Extract the `unsigned` key from the knock event.
# This is where we (cheekily) store the knock state events
unsigned = knock.setdefault("unsigned", {})
# Duplicate the dictionary in order to avoid modifying the original
unsigned = dict(unsigned)
# Extract the stripped room state from the unsigned dict
# This is for clients to get a little bit of information about
# the room they've knocked on, without revealing any sensitive information
knocked_state = list(unsigned.pop("knock_room_state", []))
# Append the actual knock membership event itself as well. This provides
# the client with:
#
# * A knock state event that they can use for easier internal tracking
# * The rough timestamp of when the knock occurred contained within the event
knocked_state.append(knock)
# Build the `knock_state` dictionary, which will contain the state of the
# room that the client has knocked on
knocked[room.room_id] = {"knock_state": {"events": knocked_state}}
return knocked
async def encode_archived(
self, rooms, time_now, token_id, event_fields, event_formatter
):