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693156aaf4
This causes huge amounts of DB IO if registrations start to fail e.g. because the DB is struggling with IO.
668 lines
25 KiB
Python
668 lines
25 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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"""Contains functions for registering clients."""
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import logging
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from twisted.internet import defer
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from synapse import types
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from synapse.api.constants import MAX_USERID_LENGTH, LoginType
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from synapse.api.errors import (
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AuthError,
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Codes,
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ConsentNotGivenError,
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LimitExceededError,
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RegistrationError,
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SynapseError,
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)
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from synapse.config.server import is_threepid_reserved
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from synapse.http.servlet import assert_params_in_dict
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from synapse.replication.http.login import RegisterDeviceReplicationServlet
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from synapse.replication.http.register import (
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ReplicationPostRegisterActionsServlet,
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ReplicationRegisterServlet,
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)
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from synapse.types import RoomAlias, RoomID, UserID, create_requester
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from synapse.util.async_helpers import Linearizer
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from ._base import BaseHandler
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logger = logging.getLogger(__name__)
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class RegistrationHandler(BaseHandler):
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def __init__(self, hs):
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"""
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Args:
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hs (synapse.server.HomeServer):
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"""
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super(RegistrationHandler, self).__init__(hs)
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self.hs = hs
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self.auth = hs.get_auth()
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self._auth_handler = hs.get_auth_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.identity_handler = self.hs.get_handlers().identity_handler
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self.ratelimiter = hs.get_registration_ratelimiter()
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self._next_generated_user_id = None
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self.macaroon_gen = hs.get_macaroon_generator()
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self._generate_user_id_linearizer = Linearizer(
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name="_generate_user_id_linearizer"
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)
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self._server_notices_mxid = hs.config.server_notices_mxid
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if hs.config.worker_app:
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self._register_client = ReplicationRegisterServlet.make_client(hs)
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self._register_device_client = RegisterDeviceReplicationServlet.make_client(
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hs
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)
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self._post_registration_client = ReplicationPostRegisterActionsServlet.make_client(
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hs
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)
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else:
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self.device_handler = hs.get_device_handler()
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self.pusher_pool = hs.get_pusherpool()
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self.session_lifetime = hs.config.session_lifetime
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@defer.inlineCallbacks
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def check_username(self, localpart, guest_access_token=None, assigned_user_id=None):
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if types.contains_invalid_mxid_characters(localpart):
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raise SynapseError(
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400,
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"User ID can only contain characters a-z, 0-9, or '=_-./'",
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Codes.INVALID_USERNAME,
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)
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if not localpart:
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raise SynapseError(400, "User ID cannot be empty", Codes.INVALID_USERNAME)
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if localpart[0] == "_":
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raise SynapseError(
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400, "User ID may not begin with _", Codes.INVALID_USERNAME
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)
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user = UserID(localpart, self.hs.hostname)
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user_id = user.to_string()
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if assigned_user_id:
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if user_id == assigned_user_id:
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return
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else:
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raise SynapseError(
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400,
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"A different user ID has already been registered for this session",
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)
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self.check_user_id_not_appservice_exclusive(user_id)
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if len(user_id) > MAX_USERID_LENGTH:
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raise SynapseError(
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400,
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"User ID may not be longer than %s characters" % (MAX_USERID_LENGTH,),
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Codes.INVALID_USERNAME,
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)
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users = yield self.store.get_users_by_id_case_insensitive(user_id)
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if users:
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if not guest_access_token:
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raise SynapseError(
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400, "User ID already taken.", errcode=Codes.USER_IN_USE
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)
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user_data = yield self.auth.get_user_by_access_token(guest_access_token)
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if not user_data["is_guest"] or user_data["user"].localpart != localpart:
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raise AuthError(
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403,
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"Cannot register taken user ID without valid guest "
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"credentials for that user.",
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errcode=Codes.FORBIDDEN,
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)
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@defer.inlineCallbacks
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def register_user(
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self,
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localpart=None,
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password=None,
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guest_access_token=None,
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make_guest=False,
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admin=False,
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threepid=None,
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user_type=None,
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default_display_name=None,
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address=None,
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bind_emails=[],
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):
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"""Registers a new client on the server.
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Args:
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localpart : The local part of the user ID to register. If None,
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one will be generated.
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password (unicode) : The password to assign to this user so they can
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login again. This can be None which means they cannot login again
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via a password (e.g. the user is an application service user).
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user_type (str|None): type of user. One of the values from
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api.constants.UserTypes, or None for a normal user.
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default_display_name (unicode|None): if set, the new user's displayname
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will be set to this. Defaults to 'localpart'.
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address (str|None): the IP address used to perform the registration.
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bind_emails (List[str]): list of emails to bind to this account.
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Returns:
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Deferred[str]: user_id
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Raises:
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RegistrationError if there was a problem registering.
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"""
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yield self.auth.check_auth_blocking(threepid=threepid)
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password_hash = None
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if password:
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password_hash = yield self._auth_handler.hash(password)
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if localpart:
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yield self.check_username(localpart, guest_access_token=guest_access_token)
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was_guest = guest_access_token is not None
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if not was_guest:
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try:
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int(localpart)
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raise RegistrationError(
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400, "Numeric user IDs are reserved for guest users."
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)
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except ValueError:
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pass
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user = UserID(localpart, self.hs.hostname)
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user_id = user.to_string()
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if was_guest:
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# If the user was a guest then they already have a profile
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default_display_name = None
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elif default_display_name is None:
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default_display_name = localpart
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yield self.register_with_store(
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user_id=user_id,
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password_hash=password_hash,
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was_guest=was_guest,
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make_guest=make_guest,
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create_profile_with_displayname=default_display_name,
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admin=admin,
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user_type=user_type,
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address=address,
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)
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if self.hs.config.user_directory_search_all_users:
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profile = yield self.store.get_profileinfo(localpart)
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yield self.user_directory_handler.handle_local_profile_change(
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user_id, profile
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)
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else:
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# autogen a sequential user ID
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attempts = 0
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user = None
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while not user:
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localpart = yield self._generate_user_id()
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user = UserID(localpart, self.hs.hostname)
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user_id = user.to_string()
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yield self.check_user_id_not_appservice_exclusive(user_id)
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if default_display_name is None:
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default_display_name = localpart
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try:
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yield self.register_with_store(
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user_id=user_id,
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password_hash=password_hash,
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make_guest=make_guest,
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create_profile_with_displayname=default_display_name,
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address=address,
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)
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except SynapseError:
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# if user id is taken, just generate another
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user = None
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user_id = None
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attempts += 1
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if not self.hs.config.user_consent_at_registration:
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yield self._auto_join_rooms(user_id)
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else:
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logger.info(
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"Skipping auto-join for %s because consent is required at registration",
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user_id,
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)
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# Bind any specified emails to this account
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current_time = self.hs.get_clock().time_msec()
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for email in bind_emails:
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# generate threepid dict
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threepid_dict = {
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"medium": "email",
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"address": email,
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"validated_at": current_time,
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}
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# Bind email to new account
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yield self._register_email_threepid(user_id, threepid_dict, None, False)
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return user_id
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@defer.inlineCallbacks
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def _auto_join_rooms(self, user_id):
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"""Automatically joins users to auto join rooms - creating the room in the first place
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if the user is the first to be created.
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Args:
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user_id(str): The user to join
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"""
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# auto-join the user to any rooms we're supposed to dump them into
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fake_requester = create_requester(user_id)
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# try to create the room if we're the first real user on the server. Note
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# that an auto-generated support or bot user is not a real user and will never be
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# the user to create the room
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should_auto_create_rooms = False
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is_real_user = yield self.store.is_real_user(user_id)
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if self.hs.config.autocreate_auto_join_rooms and is_real_user:
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count = yield self.store.count_real_users()
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should_auto_create_rooms = count == 1
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for r in self.hs.config.auto_join_rooms:
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logger.info("Auto-joining %s to %s", user_id, r)
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try:
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if should_auto_create_rooms:
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room_alias = RoomAlias.from_string(r)
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if self.hs.hostname != room_alias.domain:
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logger.warning(
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"Cannot create room alias %s, "
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"it does not match server domain",
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r,
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)
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else:
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# create room expects the localpart of the room alias
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room_alias_localpart = room_alias.localpart
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# getting the RoomCreationHandler during init gives a dependency
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# loop
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yield self.hs.get_room_creation_handler().create_room(
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fake_requester,
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config={
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"preset": "public_chat",
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"room_alias_name": room_alias_localpart,
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},
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ratelimit=False,
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)
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else:
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yield self._join_user_to_room(fake_requester, r)
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except ConsentNotGivenError as e:
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# Technically not necessary to pull out this error though
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# moving away from bare excepts is a good thing to do.
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logger.error("Failed to join new user to %r: %r", r, e)
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except Exception as e:
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logger.error("Failed to join new user to %r: %r", r, e)
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@defer.inlineCallbacks
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def post_consent_actions(self, user_id):
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"""A series of registration actions that can only be carried out once consent
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has been granted
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Args:
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user_id (str): The user to join
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"""
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yield self._auto_join_rooms(user_id)
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@defer.inlineCallbacks
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def appservice_register(self, user_localpart, as_token):
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user = UserID(user_localpart, self.hs.hostname)
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user_id = user.to_string()
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service = self.store.get_app_service_by_token(as_token)
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if not service:
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raise AuthError(403, "Invalid application service token.")
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if not service.is_interested_in_user(user_id):
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raise SynapseError(
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400,
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"Invalid user localpart for this application service.",
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errcode=Codes.EXCLUSIVE,
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)
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service_id = service.id if service.is_exclusive_user(user_id) else None
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yield self.check_user_id_not_appservice_exclusive(
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user_id, allowed_appservice=service
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)
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yield self.register_with_store(
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user_id=user_id,
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password_hash="",
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appservice_id=service_id,
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create_profile_with_displayname=user.localpart,
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)
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return user_id
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def check_user_id_not_appservice_exclusive(self, user_id, allowed_appservice=None):
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# don't allow people to register the server notices mxid
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if self._server_notices_mxid is not None:
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if user_id == self._server_notices_mxid:
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raise SynapseError(
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400, "This user ID is reserved.", errcode=Codes.EXCLUSIVE
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)
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# valid user IDs must not clash with any user ID namespaces claimed by
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# application services.
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services = self.store.get_app_services()
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interested_services = [
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s
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for s in services
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if s.is_interested_in_user(user_id) and s != allowed_appservice
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]
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for service in interested_services:
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if service.is_exclusive_user(user_id):
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raise SynapseError(
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400,
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"This user ID is reserved by an application service.",
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errcode=Codes.EXCLUSIVE,
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)
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@defer.inlineCallbacks
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def _generate_user_id(self):
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if self._next_generated_user_id is None:
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with (yield self._generate_user_id_linearizer.queue(())):
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if self._next_generated_user_id is None:
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self._next_generated_user_id = (
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yield self.store.find_next_generated_user_id_localpart()
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)
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id = self._next_generated_user_id
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self._next_generated_user_id += 1
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return str(id)
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@defer.inlineCallbacks
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def _join_user_to_room(self, requester, room_identifier):
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room_member_handler = self.hs.get_room_member_handler()
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if RoomID.is_valid(room_identifier):
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room_id = room_identifier
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elif RoomAlias.is_valid(room_identifier):
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room_alias = RoomAlias.from_string(room_identifier)
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room_id, remote_room_hosts = (
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yield room_member_handler.lookup_room_alias(room_alias)
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)
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room_id = room_id.to_string()
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else:
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raise SynapseError(
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400, "%s was not legal room ID or room alias" % (room_identifier,)
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)
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yield room_member_handler.update_membership(
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requester=requester,
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target=requester.user,
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room_id=room_id,
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remote_room_hosts=remote_room_hosts,
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action="join",
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ratelimit=False,
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)
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def register_with_store(
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self,
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user_id,
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password_hash=None,
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was_guest=False,
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make_guest=False,
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appservice_id=None,
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create_profile_with_displayname=None,
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admin=False,
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user_type=None,
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address=None,
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):
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"""Register user in the datastore.
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Args:
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user_id (str): The desired user ID to register.
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password_hash (str|None): 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|None): The ID of the appservice registering the user.
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create_profile_with_displayname (unicode|None): Optionally create a
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profile for the user, setting their displayname to the given value
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admin (boolean): is an admin user?
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user_type (str|None): type of user. One of the values from
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api.constants.UserTypes, or None for a normal user.
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address (str|None): the IP address used to perform the registration.
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Returns:
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Deferred
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"""
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# Don't rate limit for app services
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if appservice_id is None and address is not None:
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time_now = self.clock.time()
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allowed, time_allowed = self.ratelimiter.can_do_action(
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address,
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time_now_s=time_now,
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rate_hz=self.hs.config.rc_registration.per_second,
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burst_count=self.hs.config.rc_registration.burst_count,
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)
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if not allowed:
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raise LimitExceededError(
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retry_after_ms=int(1000 * (time_allowed - time_now))
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)
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if self.hs.config.worker_app:
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return self._register_client(
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user_id=user_id,
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password_hash=password_hash,
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was_guest=was_guest,
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make_guest=make_guest,
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appservice_id=appservice_id,
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create_profile_with_displayname=create_profile_with_displayname,
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admin=admin,
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user_type=user_type,
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address=address,
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)
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else:
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return self.store.register_user(
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user_id=user_id,
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password_hash=password_hash,
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was_guest=was_guest,
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make_guest=make_guest,
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appservice_id=appservice_id,
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create_profile_with_displayname=create_profile_with_displayname,
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admin=admin,
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user_type=user_type,
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)
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@defer.inlineCallbacks
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def register_device(self, user_id, device_id, initial_display_name, is_guest=False):
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"""Register a device for a user and generate an access token.
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The access token will be limited by the homeserver's session_lifetime config.
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Args:
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user_id (str): full canonical @user:id
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device_id (str|None): The device ID to check, or None to generate
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a new one.
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initial_display_name (str|None): An optional display name for the
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device.
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is_guest (bool): Whether this is a guest account
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Returns:
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defer.Deferred[tuple[str, str]]: Tuple of device ID and access token
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"""
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if self.hs.config.worker_app:
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r = yield self._register_device_client(
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user_id=user_id,
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|
device_id=device_id,
|
|
initial_display_name=initial_display_name,
|
|
is_guest=is_guest,
|
|
)
|
|
return r["device_id"], r["access_token"]
|
|
|
|
valid_until_ms = None
|
|
if self.session_lifetime is not None:
|
|
if is_guest:
|
|
raise Exception(
|
|
"session_lifetime is not currently implemented for guest access"
|
|
)
|
|
valid_until_ms = self.clock.time_msec() + self.session_lifetime
|
|
|
|
device_id = yield self.device_handler.check_device_registered(
|
|
user_id, device_id, initial_display_name
|
|
)
|
|
if is_guest:
|
|
assert valid_until_ms is None
|
|
access_token = self.macaroon_gen.generate_access_token(
|
|
user_id, ["guest = true"]
|
|
)
|
|
else:
|
|
access_token = yield self._auth_handler.get_access_token_for_user_id(
|
|
user_id, device_id=device_id, valid_until_ms=valid_until_ms
|
|
)
|
|
|
|
return (device_id, access_token)
|
|
|
|
@defer.inlineCallbacks
|
|
def post_registration_actions(self, user_id, auth_result, access_token):
|
|
"""A user has completed registration
|
|
|
|
Args:
|
|
user_id (str): The user ID that consented
|
|
auth_result (dict): The authenticated credentials of the newly
|
|
registered user.
|
|
access_token (str|None): The access token of the newly logged in
|
|
device, or None if `inhibit_login` enabled.
|
|
"""
|
|
if self.hs.config.worker_app:
|
|
yield self._post_registration_client(
|
|
user_id=user_id, auth_result=auth_result, access_token=access_token
|
|
)
|
|
return
|
|
|
|
if auth_result and LoginType.EMAIL_IDENTITY in auth_result:
|
|
threepid = auth_result[LoginType.EMAIL_IDENTITY]
|
|
# Necessary due to auth checks prior to the threepid being
|
|
# written to the db
|
|
if is_threepid_reserved(
|
|
self.hs.config.mau_limits_reserved_threepids, threepid
|
|
):
|
|
yield self.store.upsert_monthly_active_user(user_id)
|
|
|
|
yield self._register_email_threepid(user_id, threepid, access_token)
|
|
|
|
if auth_result and LoginType.MSISDN in auth_result:
|
|
threepid = auth_result[LoginType.MSISDN]
|
|
yield self._register_msisdn_threepid(user_id, threepid)
|
|
|
|
if auth_result and LoginType.TERMS in auth_result:
|
|
yield self._on_user_consented(user_id, self.hs.config.user_consent_version)
|
|
|
|
@defer.inlineCallbacks
|
|
def _on_user_consented(self, user_id, consent_version):
|
|
"""A user consented to the terms on registration
|
|
|
|
Args:
|
|
user_id (str): The user ID that consented.
|
|
consent_version (str): version of the policy the user has
|
|
consented to.
|
|
"""
|
|
logger.info("%s has consented to the privacy policy", user_id)
|
|
yield self.store.user_set_consent_version(user_id, consent_version)
|
|
yield self.post_consent_actions(user_id)
|
|
|
|
@defer.inlineCallbacks
|
|
def _register_email_threepid(self, user_id, threepid, token):
|
|
"""Add an email address as a 3pid identifier
|
|
|
|
Also adds an email pusher for the email address, if configured in the
|
|
HS config
|
|
|
|
Must be called on master.
|
|
|
|
Args:
|
|
user_id (str): id of user
|
|
threepid (object): m.login.email.identity auth response
|
|
token (str|None): access_token for the user, or None if not logged
|
|
in.
|
|
Returns:
|
|
defer.Deferred:
|
|
"""
|
|
reqd = ("medium", "address", "validated_at")
|
|
if any(x not in threepid for x in reqd):
|
|
# This will only happen if the ID server returns a malformed response
|
|
logger.info("Can't add incomplete 3pid")
|
|
return
|
|
|
|
yield self._auth_handler.add_threepid(
|
|
user_id, threepid["medium"], threepid["address"], threepid["validated_at"]
|
|
)
|
|
|
|
# And we add an email pusher for them by default, but only
|
|
# if email notifications are enabled (so people don't start
|
|
# getting mail spam where they weren't before if email
|
|
# notifs are set up on a home server)
|
|
if (
|
|
self.hs.config.email_enable_notifs
|
|
and self.hs.config.email_notif_for_new_users
|
|
and token
|
|
):
|
|
# Pull the ID of the access token back out of the db
|
|
# It would really make more sense for this to be passed
|
|
# up when the access token is saved, but that's quite an
|
|
# invasive change I'd rather do separately.
|
|
user_tuple = yield self.store.get_user_by_access_token(token)
|
|
token_id = user_tuple["token_id"]
|
|
|
|
yield self.pusher_pool.add_pusher(
|
|
user_id=user_id,
|
|
access_token=token_id,
|
|
kind="email",
|
|
app_id="m.email",
|
|
app_display_name="Email Notifications",
|
|
device_display_name=threepid["address"],
|
|
pushkey=threepid["address"],
|
|
lang=None, # We don't know a user's language here
|
|
data={},
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _register_msisdn_threepid(self, user_id, threepid):
|
|
"""Add a phone number as a 3pid identifier
|
|
|
|
Must be called on master.
|
|
|
|
Args:
|
|
user_id (str): id of user
|
|
threepid (object): m.login.msisdn auth response
|
|
Returns:
|
|
defer.Deferred:
|
|
"""
|
|
try:
|
|
assert_params_in_dict(threepid, ["medium", "address", "validated_at"])
|
|
except SynapseError as ex:
|
|
if ex.errcode == Codes.MISSING_PARAM:
|
|
# This will only happen if the ID server returns a malformed response
|
|
logger.info("Can't add incomplete 3pid")
|
|
return None
|
|
raise
|
|
|
|
yield self._auth_handler.add_threepid(
|
|
user_id, threepid["medium"], threepid["address"], threepid["validated_at"]
|
|
)
|