diff --git a/synapse/rest/admin/rooms.py b/synapse/rest/admin/rooms.py
index 3e57e6a4d0..acc8f9fa0a 100644
--- a/synapse/rest/admin/rooms.py
+++ b/synapse/rest/admin/rooms.py
@@ -14,15 +14,18 @@
# limitations under the License.
import logging
from http import HTTPStatus
-from typing import TYPE_CHECKING, List, Optional, Tuple
+from typing import TYPE_CHECKING, Optional, Tuple
+from urllib import parse as urlparse
from synapse.api.constants import EventTypes, JoinRules, Membership
from synapse.api.errors import AuthError, Codes, NotFoundError, SynapseError
+from synapse.api.filtering import Filter
from synapse.http.servlet import (
RestServlet,
assert_params_in_dict,
parse_integer,
parse_json_object_from_request,
+ parse_list_from_args,
parse_string,
)
from synapse.http.site import SynapseRequest
@@ -33,6 +36,7 @@ from synapse.rest.admin._base import (
)
from synapse.storage.databases.main.room import RoomSortOrder
from synapse.types import JsonDict, RoomAlias, RoomID, UserID, create_requester
+from synapse.util import json_decoder
if TYPE_CHECKING:
from synapse.server import HomeServer
@@ -362,10 +366,8 @@ class JoinRoomAliasServlet(RestServlet):
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 = parse_list_from_args(request.args, "server_name")
+ except KeyError:
remote_room_hosts = None
elif RoomAlias.is_valid(room_identifier):
handler = self.room_member_handler
@@ -605,3 +607,65 @@ class ForwardExtremitiesRestServlet(RestServlet):
extremities = await self.store.get_forward_extremities_for_room(room_id)
return 200, {"count": len(extremities), "results": extremities}
+
+
+class RoomEventContextServlet(RestServlet):
+ """
+ Provide the context for an event.
+ This API is designed to be used when system administrators wish to look at
+ an abuse report and understand what happened during and immediately prior
+ to this event.
+ """
+
+ PATTERNS = admin_patterns("/rooms/(?P<room_id>[^/]*)/context/(?P<event_id>[^/]*)$")
+
+ def __init__(self, hs):
+ super().__init__()
+ self.clock = hs.get_clock()
+ self.room_context_handler = hs.get_room_context_handler()
+ self._event_serializer = hs.get_event_client_serializer()
+ self.auth = hs.get_auth()
+
+ async def on_GET(self, request, room_id, event_id):
+ requester = await self.auth.get_user_by_req(request, allow_guest=False)
+ await assert_user_is_admin(self.auth, requester.user)
+
+ limit = parse_integer(request, "limit", default=10)
+
+ # picking the API shape for symmetry with /messages
+ filter_str = parse_string(request, b"filter", encoding="utf-8")
+ if filter_str:
+ filter_json = urlparse.unquote(filter_str)
+ event_filter = Filter(
+ json_decoder.decode(filter_json)
+ ) # type: Optional[Filter]
+ else:
+ event_filter = None
+
+ results = await self.room_context_handler.get_event_context(
+ requester,
+ room_id,
+ event_id,
+ limit,
+ event_filter,
+ use_admin_priviledge=True,
+ )
+
+ if not results:
+ raise SynapseError(404, "Event not found.", errcode=Codes.NOT_FOUND)
+
+ time_now = self.clock.time_msec()
+ results["events_before"] = await self._event_serializer.serialize_events(
+ results["events_before"], time_now
+ )
+ results["event"] = await self._event_serializer.serialize_event(
+ results["event"], time_now
+ )
+ results["events_after"] = await self._event_serializer.serialize_events(
+ results["events_after"], time_now
+ )
+ results["state"] = await self._event_serializer.serialize_events(
+ results["state"], time_now
+ )
+
+ return 200, results
|
