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path: root/synapse/handlers/set_password.py
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# -*- coding: utf-8 -*-
# Copyright 2017 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.
import logging

from twisted.internet import defer

from synapse.api.errors import Codes, StoreError, SynapseError

from ._base import BaseHandler

logger = logging.getLogger(__name__)


class SetPasswordHandler(BaseHandler):
    """Handler which deals with changing user account passwords"""
    def __init__(self, hs):
        super(SetPasswordHandler, self).__init__(hs)
        self._auth_handler = hs.get_auth_handler()
        self._device_handler = hs.get_device_handler()

    @defer.inlineCallbacks
    def set_password(self, user_id, newpassword, requester=None):
        password_hash = yield self._auth_handler.hash(newpassword)

        except_device_id = requester.device_id if requester else None
        except_access_token_id = requester.access_token_id if requester else None

        try:
            yield self.store.user_set_password_hash(user_id, password_hash)
        except StoreError as e:
            if e.code == 404:
                raise SynapseError(404, "Unknown user", Codes.NOT_FOUND)
            raise e

        # we want to log out all of the user's other sessions. First delete
        # all his other devices.
        yield self._device_handler.delete_all_devices_for_user(
            user_id, except_device_id=except_device_id,
        )

        # and now delete any access tokens which weren't associated with
        # devices (or were associated with this device).
        yield self._auth_handler.delete_access_tokens_for_user(
            user_id, except_token_id=except_access_token_id,
        )