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60453315bd
It's a simplification, but one that'll help make the user directory logic easier to follow with the other changes upcoming. It's not strictly required for those changes, but this will help simplify the resulting logic that listens for `m.room.member` events and generally make the logic easier to follow. This means the config option `search_all_users` ends up controlling the search query only, and not the data we store. The cost of doing so is an extra row in the `user_directory` and `user_directory_search` tables for each local user which - belongs to no public rooms - belongs to no private rooms of size ≥ 2 I think the cost of this will be marginal (since they'll already have entries in `users` and `profiles` anyway). As a small upside, a homeserver whose directory was built with this change can toggle `search_all_users` without having to rebuild their directory. Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
268 lines
11 KiB
Python
268 lines
11 KiB
Python
# Copyright 2017, 2018 New Vector Ltd
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# Copyright 2019 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from typing import TYPE_CHECKING, Optional
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from synapse.api.errors import SynapseError
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from synapse.metrics.background_process_metrics import run_as_background_process
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from synapse.types import Requester, UserID, create_requester
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from ._base import BaseHandler
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class DeactivateAccountHandler(BaseHandler):
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"""Handler which deals with deactivating user accounts."""
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def __init__(self, hs: "HomeServer"):
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super().__init__(hs)
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self.hs = hs
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self._auth_handler = hs.get_auth_handler()
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self._device_handler = hs.get_device_handler()
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self._room_member_handler = hs.get_room_member_handler()
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self._identity_handler = hs.get_identity_handler()
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self._profile_handler = hs.get_profile_handler()
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self.user_directory_handler = hs.get_user_directory_handler()
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self._server_name = hs.hostname
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# Flag that indicates whether the process to part users from rooms is running
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self._user_parter_running = False
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# Start the user parter loop so it can resume parting users from rooms where
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# it left off (if it has work left to do).
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if hs.config.worker.run_background_tasks:
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hs.get_reactor().callWhenRunning(self._start_user_parting)
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self._account_validity_enabled = (
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hs.config.account_validity.account_validity_enabled
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)
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async def deactivate_account(
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self,
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user_id: str,
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erase_data: bool,
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requester: Requester,
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id_server: Optional[str] = None,
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by_admin: bool = False,
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) -> bool:
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"""Deactivate a user's account
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Args:
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user_id: ID of user to be deactivated
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erase_data: whether to GDPR-erase the user's data
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requester: The user attempting to make this change.
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id_server: Use the given identity server when unbinding
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any threepids. If None then will attempt to unbind using the
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identity server specified when binding (if known).
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by_admin: Whether this change was made by an administrator.
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Returns:
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True if identity server supports removing threepids, otherwise False.
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"""
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# FIXME: Theoretically there is a race here wherein user resets
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# password using threepid.
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# delete threepids first. We remove these from the IS so if this fails,
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# leave the user still active so they can try again.
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# Ideally we would prevent password resets and then do this in the
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# background thread.
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# This will be set to false if the identity server doesn't support
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# unbinding
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identity_server_supports_unbinding = True
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# Retrieve the 3PIDs this user has bound to an identity server
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threepids = await self.store.user_get_bound_threepids(user_id)
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for threepid in threepids:
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try:
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result = await self._identity_handler.try_unbind_threepid(
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user_id,
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{
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"medium": threepid["medium"],
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"address": threepid["address"],
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"id_server": id_server,
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},
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)
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identity_server_supports_unbinding &= result
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except Exception:
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# Do we want this to be a fatal error or should we carry on?
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logger.exception("Failed to remove threepid from ID server")
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raise SynapseError(400, "Failed to remove threepid from ID server")
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await self.store.user_delete_threepid(
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user_id, threepid["medium"], threepid["address"]
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)
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# Remove all 3PIDs this user has bound to the homeserver
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await self.store.user_delete_threepids(user_id)
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# delete any devices belonging to the user, which will also
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# delete corresponding access tokens.
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await self._device_handler.delete_all_devices_for_user(user_id)
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# then delete any remaining access tokens which weren't associated with
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# a device.
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await self._auth_handler.delete_access_tokens_for_user(user_id)
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await self.store.user_set_password_hash(user_id, None)
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# Most of the pushers will have been deleted when we logged out the
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# associated devices above, but we still need to delete pushers not
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# associated with devices, e.g. email pushers.
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await self.store.delete_all_pushers_for_user(user_id)
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# Add the user to a table of users pending deactivation (ie.
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# removal from all the rooms they're a member of)
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await self.store.add_user_pending_deactivation(user_id)
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# delete from user directory
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await self.user_directory_handler.handle_local_user_deactivated(user_id)
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# Mark the user as erased, if they asked for that
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if erase_data:
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user = UserID.from_string(user_id)
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# Remove avatar URL from this user
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await self._profile_handler.set_avatar_url(user, requester, "", by_admin)
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# Remove displayname from this user
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await self._profile_handler.set_displayname(user, requester, "", by_admin)
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logger.info("Marking %s as erased", user_id)
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await self.store.mark_user_erased(user_id)
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# Now start the process that goes through that list and
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# parts users from rooms (if it isn't already running)
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self._start_user_parting()
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# Reject all pending invites for the user, so that the user doesn't show up in the
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# "invited" section of rooms' members list.
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await self._reject_pending_invites_for_user(user_id)
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# Remove all information on the user from the account_validity table.
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if self._account_validity_enabled:
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await self.store.delete_account_validity_for_user(user_id)
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# Mark the user as deactivated.
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await self.store.set_user_deactivated_status(user_id, True)
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return identity_server_supports_unbinding
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async def _reject_pending_invites_for_user(self, user_id: str) -> None:
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"""Reject pending invites addressed to a given user ID.
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Args:
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user_id: The user ID to reject pending invites for.
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"""
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user = UserID.from_string(user_id)
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pending_invites = await self.store.get_invited_rooms_for_local_user(user_id)
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for room in pending_invites:
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try:
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await self._room_member_handler.update_membership(
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create_requester(user, authenticated_entity=self._server_name),
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user,
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room.room_id,
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"leave",
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ratelimit=False,
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require_consent=False,
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)
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logger.info(
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"Rejected invite for deactivated user %r in room %r",
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user_id,
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room.room_id,
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)
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except Exception:
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logger.exception(
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"Failed to reject invite for user %r in room %r:"
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" ignoring and continuing",
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user_id,
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room.room_id,
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)
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def _start_user_parting(self) -> None:
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"""
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Start the process that goes through the table of users
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pending deactivation, if it isn't already running.
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"""
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if not self._user_parter_running:
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run_as_background_process("user_parter_loop", self._user_parter_loop)
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async def _user_parter_loop(self) -> None:
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"""Loop that parts deactivated users from rooms"""
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self._user_parter_running = True
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logger.info("Starting user parter")
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try:
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while True:
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user_id = await self.store.get_user_pending_deactivation()
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if user_id is None:
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break
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logger.info("User parter parting %r", user_id)
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await self._part_user(user_id)
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await self.store.del_user_pending_deactivation(user_id)
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logger.info("User parter finished parting %r", user_id)
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logger.info("User parter finished: stopping")
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finally:
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self._user_parter_running = False
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async def _part_user(self, user_id: str) -> None:
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"""Causes the given user_id to leave all the rooms they're joined to"""
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user = UserID.from_string(user_id)
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rooms_for_user = await self.store.get_rooms_for_user(user_id)
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for room_id in rooms_for_user:
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logger.info("User parter parting %r from %r", user_id, room_id)
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try:
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await self._room_member_handler.update_membership(
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create_requester(user, authenticated_entity=self._server_name),
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user,
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room_id,
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"leave",
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ratelimit=False,
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require_consent=False,
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)
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except Exception:
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logger.exception(
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"Failed to part user %r from room %r: ignoring and continuing",
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user_id,
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room_id,
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)
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async def activate_account(self, user_id: str) -> None:
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"""
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Activate an account that was previously deactivated.
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This marks the user as active and not erased in the database, but does
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not attempt to rejoin rooms, re-add threepids, etc.
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If enabled, the user will be re-added to the user directory.
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The user will also need a password hash set to actually login.
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Args:
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user_id: ID of user to be re-activated
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"""
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# Add the user to the directory, if necessary.
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user = UserID.from_string(user_id)
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profile = await self.store.get_profileinfo(user.localpart)
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await self.user_directory_handler.handle_local_profile_change(user_id, profile)
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# Ensure the user is not marked as erased.
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await self.store.mark_user_not_erased(user_id)
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# Mark the user as active.
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await self.store.set_user_deactivated_status(user_id, False)
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