570 lines
19 KiB
Python
570 lines
19 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 - 2016 OpenMarket Ltd
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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 re
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from twisted.internet import defer
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from synapse.api.errors import StoreError, Codes
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from synapse.storage import background_updates
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from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
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class RegistrationStore(background_updates.BackgroundUpdateStore):
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def __init__(self, hs):
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super(RegistrationStore, self).__init__(hs)
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self.clock = hs.get_clock()
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self.register_background_index_update(
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"access_tokens_device_index",
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index_name="access_tokens_device_id",
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table="access_tokens",
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columns=["user_id", "device_id"],
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)
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self.register_background_index_update(
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"refresh_tokens_device_index",
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index_name="refresh_tokens_device_id",
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table="refresh_tokens",
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columns=["user_id", "device_id"],
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)
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@defer.inlineCallbacks
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def add_access_token_to_user(self, user_id, token, device_id=None):
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"""Adds an access token for the given user.
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Args:
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user_id (str): The user ID.
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token (str): The new access token to add.
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device_id (str): ID of the device to associate with the access
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token
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Raises:
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StoreError if there was a problem adding this.
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"""
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next_id = self._access_tokens_id_gen.get_next()
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yield self._simple_insert(
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"access_tokens",
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{
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"id": next_id,
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"user_id": user_id,
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"token": token,
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"device_id": device_id,
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},
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desc="add_access_token_to_user",
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)
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@defer.inlineCallbacks
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def add_refresh_token_to_user(self, user_id, token, device_id=None):
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"""Adds a refresh token for the given user.
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Args:
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user_id (str): The user ID.
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token (str): The new refresh token to add.
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device_id (str): ID of the device to associate with the access
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token
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Raises:
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StoreError if there was a problem adding this.
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"""
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next_id = self._refresh_tokens_id_gen.get_next()
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yield self._simple_insert(
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"refresh_tokens",
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{
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"id": next_id,
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"user_id": user_id,
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"token": token,
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"device_id": device_id,
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},
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desc="add_refresh_token_to_user",
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)
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@defer.inlineCallbacks
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def register(self, user_id, token=None, password_hash=None,
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was_guest=False, make_guest=False, appservice_id=None,
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create_profile_with_localpart=None, admin=False):
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"""Attempts to register an account.
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Args:
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user_id (str): The desired user ID to register.
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token (str): The desired access token to use for this user. If this
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is not None, the given access token is associated with the user
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id.
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password_hash (str): Optional. The password hash for this user.
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was_guest (bool): Optional. Whether this is a guest account being
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upgraded to a non-guest account.
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make_guest (boolean): True if the the new user should be guest,
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false to add a regular user account.
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appservice_id (str): The ID of the appservice registering the user.
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create_profile_with_localpart (str): Optionally create a profile for
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the given localpart.
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Raises:
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StoreError if the user_id could not be registered.
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"""
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yield self.runInteraction(
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"register",
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self._register,
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user_id,
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token,
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password_hash,
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was_guest,
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make_guest,
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appservice_id,
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create_profile_with_localpart,
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admin
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)
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self.get_user_by_id.invalidate((user_id,))
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self.is_guest.invalidate((user_id,))
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def _register(
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self,
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txn,
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user_id,
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token,
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password_hash,
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was_guest,
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make_guest,
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appservice_id,
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create_profile_with_localpart,
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admin,
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):
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now = int(self.clock.time())
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next_id = self._access_tokens_id_gen.get_next()
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try:
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if was_guest:
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# Ensure that the guest user actually exists
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# ``allow_none=False`` makes this raise an exception
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# if the row isn't in the database.
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self._simple_select_one_txn(
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txn,
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"users",
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keyvalues={
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"name": user_id,
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"is_guest": 1,
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},
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retcols=("name",),
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allow_none=False,
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)
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self._simple_update_one_txn(
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txn,
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"users",
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keyvalues={
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"name": user_id,
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"is_guest": 1,
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},
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updatevalues={
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"password_hash": password_hash,
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"upgrade_ts": now,
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"is_guest": 1 if make_guest else 0,
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"appservice_id": appservice_id,
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"admin": 1 if admin else 0,
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}
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)
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else:
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self._simple_insert_txn(
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txn,
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"users",
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values={
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"name": user_id,
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"password_hash": password_hash,
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"creation_ts": now,
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"is_guest": 1 if make_guest else 0,
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"appservice_id": appservice_id,
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"admin": 1 if admin else 0,
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}
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)
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except self.database_engine.module.IntegrityError:
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raise StoreError(
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400, "User ID already taken.", errcode=Codes.USER_IN_USE
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)
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if token:
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# it's possible for this to get a conflict, but only for a single user
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# since tokens are namespaced based on their user ID
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txn.execute(
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"INSERT INTO access_tokens(id, user_id, token)"
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" VALUES (?,?,?)",
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(next_id, user_id, token,)
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)
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if create_profile_with_localpart:
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txn.execute(
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"INSERT INTO profiles(user_id) VALUES (?)",
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(create_profile_with_localpart,)
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)
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@cached()
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def get_user_by_id(self, user_id):
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return self._simple_select_one(
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table="users",
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keyvalues={
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"name": user_id,
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},
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retcols=["name", "password_hash", "is_guest"],
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allow_none=True,
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desc="get_user_by_id",
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)
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def get_users_by_id_case_insensitive(self, user_id):
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"""Gets users that match user_id case insensitively.
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Returns a mapping of user_id -> password_hash.
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"""
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def f(txn):
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sql = (
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"SELECT name, password_hash FROM users"
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" WHERE lower(name) = lower(?)"
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)
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txn.execute(sql, (user_id,))
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return dict(txn.fetchall())
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return self.runInteraction("get_users_by_id_case_insensitive", f)
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@defer.inlineCallbacks
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def user_set_password_hash(self, user_id, password_hash):
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"""
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NB. This does *not* evict any cache because the one use for this
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removes most of the entries subsequently anyway so it would be
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pointless. Use flush_user separately.
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"""
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yield self._simple_update_one('users', {
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'name': user_id
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}, {
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'password_hash': password_hash
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})
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self.get_user_by_id.invalidate((user_id,))
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@defer.inlineCallbacks
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def user_delete_access_tokens(self, user_id, except_token_ids=[],
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device_id=None,
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delete_refresh_tokens=False):
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"""
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Invalidate access/refresh tokens belonging to a user
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Args:
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user_id (str): ID of user the tokens belong to
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except_token_ids (list[str]): list of access_tokens which should
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*not* be deleted
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device_id (str|None): ID of device the tokens are associated with.
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If None, tokens associated with any device (or no device) will
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be deleted
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delete_refresh_tokens (bool): True to delete refresh tokens as
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well as access tokens.
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Returns:
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defer.Deferred:
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"""
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def f(txn, table, except_tokens, call_after_delete):
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sql = "SELECT token FROM %s WHERE user_id = ?" % table
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clauses = [user_id]
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if device_id is not None:
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sql += " AND device_id = ?"
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clauses.append(device_id)
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if except_tokens:
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sql += " AND id NOT IN (%s)" % (
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",".join(["?" for _ in except_tokens]),
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)
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clauses += except_tokens
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txn.execute(sql, clauses)
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rows = txn.fetchall()
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n = 100
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chunks = [rows[i:i + n] for i in xrange(0, len(rows), n)]
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for chunk in chunks:
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if call_after_delete:
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for row in chunk:
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txn.call_after(call_after_delete, (row[0],))
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txn.execute(
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"DELETE FROM %s WHERE token in (%s)" % (
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table,
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",".join(["?" for _ in chunk]),
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), [r[0] for r in chunk]
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)
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# delete refresh tokens first, to stop new access tokens being
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# allocated while our backs are turned
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if delete_refresh_tokens:
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yield self.runInteraction(
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"user_delete_access_tokens", f,
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table="refresh_tokens",
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except_tokens=[],
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call_after_delete=None,
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)
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yield self.runInteraction(
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"user_delete_access_tokens", f,
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table="access_tokens",
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except_tokens=except_token_ids,
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call_after_delete=self.get_user_by_access_token.invalidate,
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)
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def delete_access_token(self, access_token):
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def f(txn):
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self._simple_delete_one_txn(
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txn,
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table="access_tokens",
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keyvalues={
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"token": access_token
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},
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)
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txn.call_after(self.get_user_by_access_token.invalidate, (access_token,))
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return self.runInteraction("delete_access_token", f)
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@cached()
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def get_user_by_access_token(self, token):
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"""Get a user from the given access token.
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Args:
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token (str): The access token of a user.
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Returns:
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defer.Deferred: None, if the token did not match, otherwise dict
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including the keys `name`, `is_guest`, `device_id`, `token_id`.
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"""
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return self.runInteraction(
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"get_user_by_access_token",
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self._query_for_auth,
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token
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)
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def exchange_refresh_token(self, refresh_token, token_generator):
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"""Exchange a refresh token for a new one.
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Doing so invalidates the old refresh token - refresh tokens are single
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use.
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Args:
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refresh_token (str): The refresh token of a user.
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token_generator (fn: str -> str): Function which, when given a
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user ID, returns a unique refresh token for that user. This
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function must never return the same value twice.
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Returns:
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tuple of (user_id, new_refresh_token, device_id)
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Raises:
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StoreError if no user was found with that refresh token.
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"""
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return self.runInteraction(
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"exchange_refresh_token",
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self._exchange_refresh_token,
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refresh_token,
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token_generator
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)
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def _exchange_refresh_token(self, txn, old_token, token_generator):
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sql = "SELECT user_id, device_id FROM refresh_tokens WHERE token = ?"
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txn.execute(sql, (old_token,))
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rows = self.cursor_to_dict(txn)
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if not rows:
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raise StoreError(403, "Did not recognize refresh token")
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user_id = rows[0]["user_id"]
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device_id = rows[0]["device_id"]
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# TODO(danielwh): Maybe perform a validation on the macaroon that
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# macaroon.user_id == user_id.
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new_token = token_generator(user_id)
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sql = "UPDATE refresh_tokens SET token = ? WHERE token = ?"
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txn.execute(sql, (new_token, old_token,))
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return user_id, new_token, device_id
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@defer.inlineCallbacks
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def is_server_admin(self, user):
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res = yield self._simple_select_one_onecol(
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table="users",
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keyvalues={"name": user.to_string()},
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retcol="admin",
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allow_none=True,
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desc="is_server_admin",
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)
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defer.returnValue(res if res else False)
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@cachedInlineCallbacks()
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def is_guest(self, user_id):
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res = yield self._simple_select_one_onecol(
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table="users",
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keyvalues={"name": user_id},
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retcol="is_guest",
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allow_none=True,
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desc="is_guest",
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)
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defer.returnValue(res if res else False)
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def _query_for_auth(self, txn, token):
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sql = (
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"SELECT users.name, users.is_guest, access_tokens.id as token_id,"
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" access_tokens.device_id"
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" FROM users"
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" INNER JOIN access_tokens on users.name = access_tokens.user_id"
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" WHERE token = ?"
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)
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txn.execute(sql, (token,))
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rows = self.cursor_to_dict(txn)
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if rows:
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return rows[0]
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return None
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@defer.inlineCallbacks
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def user_add_threepid(self, user_id, medium, address, validated_at, added_at):
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yield self._simple_upsert("user_threepids", {
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"medium": medium,
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"address": address,
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}, {
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"user_id": user_id,
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"validated_at": validated_at,
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"added_at": added_at,
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})
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@defer.inlineCallbacks
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def user_get_threepids(self, user_id):
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ret = yield self._simple_select_list(
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"user_threepids", {
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"user_id": user_id
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},
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['medium', 'address', 'validated_at', 'added_at'],
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'user_get_threepids'
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)
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defer.returnValue(ret)
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@defer.inlineCallbacks
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def get_user_id_by_threepid(self, medium, address):
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ret = yield self._simple_select_one(
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"user_threepids",
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{
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"medium": medium,
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"address": address
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},
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['user_id'], True, 'get_user_id_by_threepid'
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)
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if ret:
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defer.returnValue(ret['user_id'])
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defer.returnValue(None)
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def user_delete_threepids(self, user_id):
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return self._simple_delete(
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"user_threepids",
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keyvalues={
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"user_id": user_id,
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},
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desc="user_delete_threepids",
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)
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@defer.inlineCallbacks
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def count_all_users(self):
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"""Counts all users registered on the homeserver."""
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def _count_users(txn):
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txn.execute("SELECT COUNT(*) AS users FROM users")
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rows = self.cursor_to_dict(txn)
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if rows:
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return rows[0]["users"]
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return 0
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ret = yield self.runInteraction("count_users", _count_users)
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defer.returnValue(ret)
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@defer.inlineCallbacks
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def find_next_generated_user_id_localpart(self):
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"""
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Gets the localpart of the next generated user ID.
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Generated user IDs are integers, and we aim for them to be as small as
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we can. Unfortunately, it's possible some of them are already taken by
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existing users, and there may be gaps in the already taken range. This
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function returns the start of the first allocatable gap. This is to
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avoid the case of ID 10000000 being pre-allocated, so us wasting the
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first (and shortest) many generated user IDs.
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"""
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def _find_next_generated_user_id(txn):
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txn.execute("SELECT name FROM users")
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rows = self.cursor_to_dict(txn)
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regex = re.compile("^@(\d+):")
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found = set()
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for r in rows:
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user_id = r["name"]
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match = regex.search(user_id)
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if match:
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found.add(int(match.group(1)))
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for i in xrange(len(found) + 1):
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if i not in found:
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return i
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defer.returnValue((yield self.runInteraction(
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"find_next_generated_user_id",
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_find_next_generated_user_id
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)))
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@defer.inlineCallbacks
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def get_3pid_guest_access_token(self, medium, address):
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ret = yield self._simple_select_one(
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"threepid_guest_access_tokens",
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{
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"medium": medium,
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"address": address
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},
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["guest_access_token"], True, 'get_3pid_guest_access_token'
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)
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if ret:
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defer.returnValue(ret["guest_access_token"])
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defer.returnValue(None)
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@defer.inlineCallbacks
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def save_or_get_3pid_guest_access_token(
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self, medium, address, access_token, inviter_user_id
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):
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"""
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Gets the 3pid's guest access token if exists, else saves access_token.
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Args:
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medium (str): Medium of the 3pid. Must be "email".
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address (str): 3pid address.
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access_token (str): The access token to persist if none is
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already persisted.
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inviter_user_id (str): User ID of the inviter.
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Returns:
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deferred str: Whichever access token is persisted at the end
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|
of this function call.
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"""
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def insert(txn):
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txn.execute(
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"INSERT INTO threepid_guest_access_tokens "
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|
"(medium, address, guest_access_token, first_inviter) "
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|
"VALUES (?, ?, ?, ?)",
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(medium, address, access_token, inviter_user_id)
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|
)
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try:
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yield self.runInteraction("save_3pid_guest_access_token", insert)
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|
defer.returnValue(access_token)
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except self.database_engine.module.IntegrityError:
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|
ret = yield self.get_3pid_guest_access_token(medium, address)
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|
defer.returnValue(ret)
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