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Fix an edge-case with invited rooms over federation in the spaces summary. (#10560)
If a room which the requesting user was invited to was queried over federation it will now properly appear in the spaces summary (instead of being stripped out by the requesting server).
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changelog.d/10560.feature
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changelog.d/10560.feature
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Add pagination to the spaces summary based on updates to [MSC2946](https://github.com/matrix-org/matrix-doc/pull/2946).
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@ -158,48 +158,10 @@ class SpaceSummaryHandler:
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room = room_entry.room
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fed_room_id = room_entry.room_id
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# The room should only be included in the summary if:
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# a. the user is in the room;
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# b. the room is world readable; or
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# c. the user could join the room, e.g. the join rules
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# are set to public or the user is in a space that
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# has been granted access to the room.
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#
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# Note that we know the user is not in the root room (which is
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# why the remote call was made in the first place), but the user
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# could be in one of the children rooms and we just didn't know
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# about the link.
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# The API doesn't return the room version so assume that a
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# join rule of knock is valid.
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include_room = (
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room.get("join_rules") in (JoinRules.PUBLIC, JoinRules.KNOCK)
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or room.get("world_readable") is True
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)
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# Check if the user is a member of any of the allowed spaces
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# from the response.
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allowed_rooms = room.get("allowed_room_ids") or room.get(
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"allowed_spaces"
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)
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if (
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not include_room
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and allowed_rooms
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and isinstance(allowed_rooms, list)
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):
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include_room = await self._event_auth_handler.is_user_in_rooms(
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allowed_rooms, requester
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)
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# Finally, if this isn't the requested room, check ourselves
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# if we can access the room.
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if not include_room and fed_room_id != queue_entry.room_id:
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include_room = await self._is_room_accessible(
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fed_room_id, requester, None
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)
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# The user can see the room, include it!
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if include_room:
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if await self._is_remote_room_accessible(
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requester, fed_room_id, room
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):
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# Before returning to the client, remove the allowed_room_ids
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# and allowed_spaces keys.
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room.pop("allowed_room_ids", None)
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@ -336,7 +298,7 @@ class SpaceSummaryHandler:
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Returns:
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A room entry if the room should be returned. None, otherwise.
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"""
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if not await self._is_room_accessible(room_id, requester, origin):
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if not await self._is_local_room_accessible(room_id, requester, origin):
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return None
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room_entry = await self._build_room_entry(room_id, for_federation=bool(origin))
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@ -438,7 +400,7 @@ class SpaceSummaryHandler:
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return results
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async def _is_room_accessible(
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async def _is_local_room_accessible(
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self, room_id: str, requester: Optional[str], origin: Optional[str]
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) -> bool:
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"""
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@ -550,6 +512,51 @@ class SpaceSummaryHandler:
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)
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return False
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async def _is_remote_room_accessible(
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self, requester: str, room_id: str, room: JsonDict
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) -> bool:
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"""
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Calculate whether the room received over federation should be shown in the spaces summary.
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It should be included if:
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* The requester is joined or can join the room (per MSC3173).
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* The history visibility is set to world readable.
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Note that the local server is not in the requested room (which is why the
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remote call was made in the first place), but the user could have access
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due to an invite, etc.
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Args:
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requester: The user requesting the summary.
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room_id: The room ID returned over federation.
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room: The summary of the child room returned over federation.
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Returns:
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True if the room should be included in the spaces summary.
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"""
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# The API doesn't return the room version so assume that a
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# join rule of knock is valid.
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if (
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room.get("join_rules") in (JoinRules.PUBLIC, JoinRules.KNOCK)
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or room.get("world_readable") is True
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):
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return True
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# Check if the user is a member of any of the allowed spaces
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# from the response.
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allowed_rooms = room.get("allowed_room_ids") or room.get("allowed_spaces")
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if allowed_rooms and isinstance(allowed_rooms, list):
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if await self._event_auth_handler.is_user_in_rooms(
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allowed_rooms, requester
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):
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return True
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# Finally, check locally if we can access the room. The user might
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# already be in the room (if it was a child room), or there might be a
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# pending invite, etc.
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return await self._is_local_room_accessible(room_id, requester, None)
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async def _build_room_entry(self, room_id: str, for_federation: bool) -> JsonDict:
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"""
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Generate en entry suitable for the 'rooms' list in the summary response.
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@ -30,7 +30,7 @@ from synapse.handlers.space_summary import _child_events_comparison_key, _RoomEn
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from synapse.rest import admin
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from synapse.rest.client.v1 import login, room
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from synapse.server import HomeServer
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from synapse.types import JsonDict
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from synapse.types import JsonDict, UserID
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from tests import unittest
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@ -149,6 +149,36 @@ class SpaceSummaryTestCase(unittest.HomeserverTestCase):
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events,
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)
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def _poke_fed_invite(self, room_id: str, from_user: str) -> None:
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"""
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Creates a invite (as if received over federation) for the room from the
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given hostname.
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Args:
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room_id: The room ID to issue an invite for.
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fed_hostname: The user to invite from.
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"""
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# Poke an invite over federation into the database.
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fed_handler = self.hs.get_federation_handler()
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fed_hostname = UserID.from_string(from_user).domain
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event = make_event_from_dict(
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{
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"room_id": room_id,
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"event_id": "!abcd:" + fed_hostname,
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"type": EventTypes.Member,
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"sender": from_user,
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"state_key": self.user,
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"content": {"membership": Membership.INVITE},
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"prev_events": [],
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"auth_events": [],
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"depth": 1,
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"origin_server_ts": 1234,
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}
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)
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self.get_success(
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fed_handler.on_invite_request(fed_hostname, event, RoomVersions.V6)
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)
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def test_simple_space(self):
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"""Test a simple space with a single room."""
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result = self.get_success(self.handler.get_space_summary(self.user, self.space))
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@ -416,24 +446,7 @@ class SpaceSummaryTestCase(unittest.HomeserverTestCase):
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joined_room = self.helper.create_room_as(self.user, tok=self.token)
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# Poke an invite over federation into the database.
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fed_handler = self.hs.get_federation_handler()
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event = make_event_from_dict(
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{
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"room_id": invited_room,
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"event_id": "!abcd:" + fed_hostname,
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"type": EventTypes.Member,
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"sender": "@remote:" + fed_hostname,
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"state_key": self.user,
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"content": {"membership": Membership.INVITE},
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"prev_events": [],
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"auth_events": [],
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"depth": 1,
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"origin_server_ts": 1234,
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}
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)
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self.get_success(
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fed_handler.on_invite_request(fed_hostname, event, RoomVersions.V6)
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)
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self._poke_fed_invite(invited_room, "@remote:" + fed_hostname)
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async def summarize_remote_room(
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_self, room, suggested_only, max_children, exclude_rooms
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@ -570,3 +583,58 @@ class SpaceSummaryTestCase(unittest.HomeserverTestCase):
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(subspace, joined_room),
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],
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)
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def test_fed_invited(self):
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"""
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A room which the user was invited to should be included in the response.
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This differs from test_fed_filtering in that the room itself is being
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queried over federation, instead of it being included as a sub-room of
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a space in the response.
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"""
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fed_hostname = self.hs.hostname + "2"
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fed_room = "#subroom:" + fed_hostname
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# Poke an invite over federation into the database.
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self._poke_fed_invite(fed_room, "@remote:" + fed_hostname)
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async def summarize_remote_room(
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_self, room, suggested_only, max_children, exclude_rooms
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):
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return [
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_RoomEntry(
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fed_room,
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{
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"room_id": fed_room,
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"world_readable": False,
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"join_rules": JoinRules.INVITE,
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},
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),
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]
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# Add a room to the space which is on another server.
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self._add_child(self.space, fed_room, self.token)
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with mock.patch(
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"synapse.handlers.space_summary.SpaceSummaryHandler._summarize_remote_room",
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new=summarize_remote_room,
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):
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result = self.get_success(
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self.handler.get_space_summary(self.user, self.space)
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)
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self._assert_rooms(
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result,
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[
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self.space,
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self.room,
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fed_room,
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],
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)
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self._assert_events(
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result,
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[
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(self.space, self.room),
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(self.space, fed_room),
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],
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)
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