1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
# -*- coding: utf-8 -*-
# Copyright 2017, 2018 New Vector Ltd
#
# 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 twisted.internet import defer, reactor
from ._base import BaseHandler
from synapse.types import UserID, create_requester
from synapse.util.logcontext import run_in_background
from synapse.api.errors import SynapseError
import logging
logger = logging.getLogger(__name__)
class DeactivateAccountHandler(BaseHandler):
"""Handler which deals with deactivating user accounts."""
def __init__(self, hs):
super(DeactivateAccountHandler, self).__init__(hs)
self._auth_handler = hs.get_auth_handler()
self._device_handler = hs.get_device_handler()
self._room_member_handler = hs.get_room_member_handler()
self._identity_handler = hs.get_handlers().identity_handler
self.user_directory_handler = hs.get_user_directory_handler()
# Flag that indicates whether the process to part users from rooms is running
self._user_parter_running = False
# Start the user parter loop so it can resume parting users from rooms where
# it left off (if it has work left to do).
reactor.callWhenRunning(self._start_user_parting)
@defer.inlineCallbacks
def deactivate_account(self, user_id):
"""Deactivate a user's account
Args:
user_id (str): ID of user to be deactivated
Returns:
Deferred
"""
# FIXME: Theoretically there is a race here wherein user resets
# password using threepid.
# delete threepids first. We remove these from the IS so if this fails,
# leave the user still active so they can try again.
# Ideally we would prevent password resets and then do this in the
# background thread.
threepids = yield self.store.user_get_threepids(user_id)
for threepid in threepids:
try:
yield self._identity_handler.unbind_threepid(
user_id,
{
'medium': threepid['medium'],
'address': threepid['address'],
},
)
except Exception:
# Do we want this to be a fatal error or should we carry on?
logger.exception("Failed to remove threepid from ID server")
raise SynapseError(400, "Failed to remove threepid from ID server")
yield self.store.user_delete_threepid(
user_id, threepid['medium'], threepid['address'],
)
# delete any devices belonging to the user, which will also
# delete corresponding access tokens.
yield self._device_handler.delete_all_devices_for_user(user_id)
# then delete any remaining access tokens which weren't associated with
# a device.
yield self._auth_handler.delete_access_tokens_for_user(user_id)
yield self.store.user_set_password_hash(user_id, None)
# Add the user to a table of users pending deactivation (ie.
# removal from all the rooms they're a member of)
yield self.store.add_user_pending_deactivation(user_id)
# delete from user directory
yield self.user_directory_handler.handle_user_deactivated(user_id)
# Now start the process that goes through that list and
# parts users from rooms (if it isn't already running)
self._start_user_parting()
def _start_user_parting(self):
"""
Start the process that goes through the table of users
pending deactivation, if it isn't already running.
Returns:
None
"""
if not self._user_parter_running:
run_in_background(self._user_parter_loop)
@defer.inlineCallbacks
def _user_parter_loop(self):
"""Loop that parts deactivated users from rooms
Returns:
None
"""
self._user_parter_running = True
logger.info("Starting user parter")
try:
while True:
user_id = yield self.store.get_user_pending_deactivation()
if user_id is None:
break
logger.info("User parter parting %r", user_id)
yield self._part_user(user_id)
yield self.store.del_user_pending_deactivation(user_id)
logger.info("User parter finished parting %r", user_id)
logger.info("User parter finished: stopping")
finally:
self._user_parter_running = False
@defer.inlineCallbacks
def _part_user(self, user_id):
"""Causes the given user_id to leave all the rooms they're joined to
Returns:
None
"""
user = UserID.from_string(user_id)
rooms_for_user = yield self.store.get_rooms_for_user(user_id)
for room_id in rooms_for_user:
logger.info("User parter parting %r from %r", user_id, room_id)
try:
yield self._room_member_handler.update_membership(
create_requester(user),
user,
room_id,
"leave",
ratelimit=False,
)
except Exception:
logger.exception(
"Failed to part user %r from room %r: ignoring and continuing",
user_id, room_id,
)
|
