diff --git a/synapse/handlers/event_auth.py b/synapse/handlers/event_auth.py
deleted file mode 100644
index 06da1a93d9..0000000000
--- a/synapse/handlers/event_auth.py
+++ /dev/null
@@ -1,82 +0,0 @@
-# Copyright 2021 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.
-from typing import TYPE_CHECKING
-
-from synapse.api.constants import EventTypes, JoinRules
-from synapse.api.room_versions import RoomVersion
-from synapse.types import StateMap
-
-if TYPE_CHECKING:
- from synapse.server import HomeServer
-
-
-class EventAuthHandler:
- def __init__(self, hs: "HomeServer"):
- self._store = hs.get_datastore()
-
- async def can_join_without_invite(
- self, state_ids: StateMap[str], room_version: RoomVersion, user_id: str
- ) -> bool:
- """
- Check whether a user can join a room without an invite.
-
- When joining a room with restricted joined rules (as defined in MSC3083),
- the membership of spaces must be checked during join.
-
- Args:
- state_ids: The state of the room as it currently is.
- room_version: The room version of the room being joined.
- user_id: The user joining the room.
-
- Returns:
- True if the user can join the room, false otherwise.
- """
- # This only applies to room versions which support the new join rule.
- if not room_version.msc3083_join_rules:
- return True
-
- # If there's no join rule, then it defaults to public (so this doesn't apply).
- join_rules_event_id = state_ids.get((EventTypes.JoinRules, ""), None)
- if not join_rules_event_id:
- return True
-
- # If the join rule is not restricted, this doesn't apply.
- join_rules_event = await self._store.get_event(join_rules_event_id)
- if join_rules_event.content.get("join_rule") != JoinRules.MSC3083_RESTRICTED:
- return True
-
- # If allowed is of the wrong form, then only allow invited users.
- allowed_spaces = join_rules_event.content.get("allow", [])
- if not isinstance(allowed_spaces, list):
- return False
-
- # Get the list of joined rooms and see if there's an overlap.
- joined_rooms = await self._store.get_rooms_for_user(user_id)
-
- # Pull out the other room IDs, invalid data gets filtered.
- for space in allowed_spaces:
- if not isinstance(space, dict):
- continue
-
- space_id = space.get("space")
- if not isinstance(space_id, str):
- continue
-
- # The user was joined to one of the spaces specified, they can join
- # this room!
- if space_id in joined_rooms:
- return True
-
- # The user was not in any of the required spaces.
- return False
|
