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![Patrick Cloke](/assets/img/avatar_default.png)
This avoids the overhead of searching through the various configuration classes by directly referencing the class that the attributes are in. It also improves type hints since mypy can now resolve the types of the configuration variables.
825 lines
29 KiB
Python
825 lines
29 KiB
Python
# Copyright 2017 New Vector Ltd
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# Copyright 2020 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 email.utils
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import logging
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from typing import (
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TYPE_CHECKING,
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Any,
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Callable,
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Dict,
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Generator,
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Iterable,
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List,
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Optional,
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Tuple,
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Union,
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)
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import attr
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import jinja2
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from twisted.internet import defer
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from twisted.web.resource import IResource
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from synapse.events import EventBase
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from synapse.events.presence_router import PresenceRouter
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from synapse.http.client import SimpleHttpClient
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from synapse.http.server import (
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DirectServeHtmlResource,
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DirectServeJsonResource,
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respond_with_html,
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)
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from synapse.http.servlet import parse_json_object_from_request
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from synapse.http.site import SynapseRequest
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from synapse.logging.context import make_deferred_yieldable, run_in_background
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from synapse.metrics.background_process_metrics import run_as_background_process
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from synapse.storage.database import DatabasePool, LoggingTransaction
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from synapse.storage.databases.main.roommember import ProfileInfo
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from synapse.storage.state import StateFilter
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from synapse.types import (
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DomainSpecificString,
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JsonDict,
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Requester,
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UserID,
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UserInfo,
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create_requester,
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)
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from synapse.util import Clock
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from synapse.util.caches.descriptors import cached
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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"""
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This package defines the 'stable' API which can be used by extension modules which
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are loaded into Synapse.
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"""
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PRESENCE_ALL_USERS = PresenceRouter.ALL_USERS
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__all__ = [
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"errors",
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"make_deferred_yieldable",
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"parse_json_object_from_request",
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"respond_with_html",
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"run_in_background",
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"cached",
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"UserID",
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"DatabasePool",
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"LoggingTransaction",
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"DirectServeHtmlResource",
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"DirectServeJsonResource",
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"ModuleApi",
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"PRESENCE_ALL_USERS",
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]
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logger = logging.getLogger(__name__)
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@attr.s(auto_attribs=True)
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class UserIpAndAgent:
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"""
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An IP address and user agent used by a user to connect to this homeserver.
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"""
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ip: str
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user_agent: str
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# The time at which this user agent/ip was last seen.
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last_seen: int
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class ModuleApi:
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"""A proxy object that gets passed to various plugin modules so they
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can register new users etc if necessary.
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"""
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def __init__(self, hs: "HomeServer", auth_handler):
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self._hs = hs
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self._store = hs.get_datastore()
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self._auth = hs.get_auth()
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self._auth_handler = auth_handler
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self._server_name = hs.hostname
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self._presence_stream = hs.get_event_sources().sources.presence
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self._state = hs.get_state_handler()
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self._clock: Clock = hs.get_clock()
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self._send_email_handler = hs.get_send_email_handler()
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self.custom_template_dir = hs.config.server.custom_template_directory
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try:
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app_name = self._hs.config.email.email_app_name
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self._from_string = self._hs.config.email.email_notif_from % {
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"app": app_name
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}
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except (KeyError, TypeError):
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# If substitution failed (which can happen if the string contains
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# placeholders other than just "app", or if the type of the placeholder is
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# not a string), fall back to the bare strings.
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self._from_string = self._hs.config.email.email_notif_from
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self._raw_from = email.utils.parseaddr(self._from_string)[1]
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# We expose these as properties below in order to attach a helpful docstring.
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self._http_client: SimpleHttpClient = hs.get_simple_http_client()
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self._public_room_list_manager = PublicRoomListManager(hs)
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self._spam_checker = hs.get_spam_checker()
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self._account_validity_handler = hs.get_account_validity_handler()
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self._third_party_event_rules = hs.get_third_party_event_rules()
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self._presence_router = hs.get_presence_router()
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#################################################################################
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# The following methods should only be called during the module's initialisation.
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@property
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def register_spam_checker_callbacks(self):
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"""Registers callbacks for spam checking capabilities."""
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return self._spam_checker.register_callbacks
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@property
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def register_account_validity_callbacks(self):
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"""Registers callbacks for account validity capabilities."""
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return self._account_validity_handler.register_account_validity_callbacks
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@property
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def register_third_party_rules_callbacks(self):
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"""Registers callbacks for third party event rules capabilities."""
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return self._third_party_event_rules.register_third_party_rules_callbacks
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@property
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def register_presence_router_callbacks(self):
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"""Registers callbacks for presence router capabilities."""
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return self._presence_router.register_presence_router_callbacks
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def register_web_resource(self, path: str, resource: IResource):
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"""Registers a web resource to be served at the given path.
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This function should be called during initialisation of the module.
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If multiple modules register a resource for the same path, the module that
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appears the highest in the configuration file takes priority.
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Args:
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path: The path to register the resource for.
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resource: The resource to attach to this path.
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"""
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self._hs.register_module_web_resource(path, resource)
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#########################################################################
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# The following methods can be called by the module at any point in time.
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@property
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def http_client(self):
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"""Allows making outbound HTTP requests to remote resources.
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An instance of synapse.http.client.SimpleHttpClient
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"""
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return self._http_client
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@property
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def public_room_list_manager(self):
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"""Allows adding to, removing from and checking the status of rooms in the
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public room list.
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An instance of synapse.module_api.PublicRoomListManager
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"""
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return self._public_room_list_manager
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@property
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def public_baseurl(self) -> str:
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"""The configured public base URL for this homeserver."""
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return self._hs.config.server.public_baseurl
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@property
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def email_app_name(self) -> str:
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"""The application name configured in the homeserver's configuration."""
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return self._hs.config.email.email_app_name
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async def get_userinfo_by_id(self, user_id: str) -> Optional[UserInfo]:
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"""Get user info by user_id
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Args:
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user_id: Fully qualified user id.
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Returns:
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UserInfo object if a user was found, otherwise None
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"""
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return await self._store.get_userinfo_by_id(user_id)
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async def get_user_by_req(
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self,
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req: SynapseRequest,
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allow_guest: bool = False,
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allow_expired: bool = False,
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) -> Requester:
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"""Check the access_token provided for a request
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Args:
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req: Incoming HTTP request
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allow_guest: True if guest users should be allowed. If this
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is False, and the access token is for a guest user, an
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AuthError will be thrown
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allow_expired: True if expired users should be allowed. If this
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is False, and the access token is for an expired user, an
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AuthError will be thrown
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Returns:
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The requester for this request
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Raises:
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InvalidClientCredentialsError: if no user by that token exists,
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or the token is invalid.
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"""
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return await self._auth.get_user_by_req(
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req,
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allow_guest,
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allow_expired=allow_expired,
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)
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async def is_user_admin(self, user_id: str) -> bool:
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"""Checks if a user is a server admin.
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Args:
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user_id: The Matrix ID of the user to check.
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Returns:
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True if the user is a server admin, False otherwise.
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"""
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return await self._store.is_server_admin(UserID.from_string(user_id))
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def get_qualified_user_id(self, username):
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"""Qualify a user id, if necessary
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Takes a user id provided by the user and adds the @ and :domain to
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qualify it, if necessary
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Args:
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username (str): provided user id
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Returns:
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str: qualified @user:id
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"""
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if username.startswith("@"):
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return username
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return UserID(username, self._hs.hostname).to_string()
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async def get_profile_for_user(self, localpart: str) -> ProfileInfo:
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"""Look up the profile info for the user with the given localpart.
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Args:
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localpart: The localpart to look up profile information for.
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Returns:
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The profile information (i.e. display name and avatar URL).
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"""
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return await self._store.get_profileinfo(localpart)
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async def get_threepids_for_user(self, user_id: str) -> List[Dict[str, str]]:
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"""Look up the threepids (email addresses and phone numbers) associated with the
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given Matrix user ID.
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Args:
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user_id: The Matrix user ID to look up threepids for.
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Returns:
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A list of threepids, each threepid being represented by a dictionary
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containing a "medium" key which value is "email" for email addresses and
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"msisdn" for phone numbers, and an "address" key which value is the
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threepid's address.
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"""
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return await self._store.user_get_threepids(user_id)
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def check_user_exists(self, user_id):
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"""Check if user exists.
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Args:
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user_id (str): Complete @user:id
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Returns:
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Deferred[str|None]: Canonical (case-corrected) user_id, or None
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if the user is not registered.
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"""
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return defer.ensureDeferred(self._auth_handler.check_user_exists(user_id))
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@defer.inlineCallbacks
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def register(self, localpart, displayname=None, emails: Optional[List[str]] = None):
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"""Registers a new user with given localpart and optional displayname, emails.
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Also returns an access token for the new user.
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Deprecated: avoid this, as it generates a new device with no way to
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return that device to the user. Prefer separate calls to register_user and
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register_device.
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Args:
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localpart (str): The localpart of the new user.
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displayname (str|None): The displayname of the new user.
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emails (List[str]): Emails to bind to the new user.
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Returns:
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Deferred[tuple[str, str]]: a 2-tuple of (user_id, access_token)
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"""
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logger.warning(
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"Using deprecated ModuleApi.register which creates a dummy user device."
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)
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user_id = yield self.register_user(localpart, displayname, emails or [])
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_, access_token, _, _ = yield self.register_device(user_id)
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return user_id, access_token
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def register_user(
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self, localpart, displayname=None, emails: Optional[List[str]] = None
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):
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"""Registers a new user with given localpart and optional displayname, emails.
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Args:
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localpart (str): The localpart of the new user.
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displayname (str|None): The displayname of the new user.
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emails (List[str]): Emails to bind to the new user.
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Raises:
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SynapseError if there is an error performing the registration. Check the
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'errcode' property for more information on the reason for failure
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Returns:
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defer.Deferred[str]: user_id
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"""
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return defer.ensureDeferred(
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self._hs.get_registration_handler().register_user(
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localpart=localpart,
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default_display_name=displayname,
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bind_emails=emails or [],
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)
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)
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def register_device(self, user_id, device_id=None, initial_display_name=None):
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"""Register a device for a user and generate an access token.
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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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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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return defer.ensureDeferred(
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self._hs.get_registration_handler().register_device(
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user_id=user_id,
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device_id=device_id,
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initial_display_name=initial_display_name,
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)
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)
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def record_user_external_id(
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self, auth_provider_id: str, remote_user_id: str, registered_user_id: str
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) -> defer.Deferred:
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"""Record a mapping from an external user id to a mxid
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Args:
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auth_provider: identifier for the remote auth provider
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external_id: id on that system
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user_id: complete mxid that it is mapped to
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"""
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return defer.ensureDeferred(
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self._store.record_user_external_id(
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auth_provider_id, remote_user_id, registered_user_id
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)
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)
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def generate_short_term_login_token(
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self,
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user_id: str,
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duration_in_ms: int = (2 * 60 * 1000),
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auth_provider_id: str = "",
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) -> str:
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"""Generate a login token suitable for m.login.token authentication
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Args:
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user_id: gives the ID of the user that the token is for
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duration_in_ms: the time that the token will be valid for
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auth_provider_id: the ID of the SSO IdP that the user used to authenticate
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to get this token, if any. This is encoded in the token so that
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/login can report stats on number of successful logins by IdP.
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"""
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return self._hs.get_macaroon_generator().generate_short_term_login_token(
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user_id,
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auth_provider_id,
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duration_in_ms,
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)
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@defer.inlineCallbacks
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def invalidate_access_token(self, access_token):
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"""Invalidate an access token for a user
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Args:
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access_token(str): access token
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Returns:
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twisted.internet.defer.Deferred - resolves once the access token
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has been removed.
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Raises:
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synapse.api.errors.AuthError: the access token is invalid
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"""
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# see if the access token corresponds to a device
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user_info = yield defer.ensureDeferred(
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self._auth.get_user_by_access_token(access_token)
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)
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device_id = user_info.get("device_id")
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user_id = user_info["user"].to_string()
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if device_id:
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# delete the device, which will also delete its access tokens
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yield defer.ensureDeferred(
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self._hs.get_device_handler().delete_device(user_id, device_id)
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)
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else:
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# no associated device. Just delete the access token.
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yield defer.ensureDeferred(
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self._auth_handler.delete_access_token(access_token)
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)
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def run_db_interaction(self, desc, func, *args, **kwargs):
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"""Run a function with a database connection
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Args:
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desc (str): description for the transaction, for metrics etc
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func (func): function to be run. Passed a database cursor object
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as well as *args and **kwargs
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*args: positional args to be passed to func
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**kwargs: named args to be passed to func
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Returns:
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Deferred[object]: result of func
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"""
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return defer.ensureDeferred(
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self._store.db_pool.runInteraction(desc, func, *args, **kwargs)
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)
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def complete_sso_login(
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self, registered_user_id: str, request: SynapseRequest, client_redirect_url: str
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):
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"""Complete a SSO login by redirecting the user to a page to confirm whether they
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want their access token sent to `client_redirect_url`, or redirect them to that
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URL with a token directly if the URL matches with one of the whitelisted clients.
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This is deprecated in favor of complete_sso_login_async.
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Args:
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registered_user_id: The MXID that has been registered as a previous step of
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of this SSO login.
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request: The request to respond to.
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client_redirect_url: The URL to which to offer to redirect the user (or to
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redirect them directly if whitelisted).
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"""
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self._auth_handler._complete_sso_login(
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registered_user_id,
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"<unknown>",
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request,
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client_redirect_url,
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)
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async def complete_sso_login_async(
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self,
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registered_user_id: str,
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request: SynapseRequest,
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client_redirect_url: str,
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new_user: bool = False,
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auth_provider_id: str = "<unknown>",
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):
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"""Complete a SSO login by redirecting the user to a page to confirm whether they
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want their access token sent to `client_redirect_url`, or redirect them to that
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URL with a token directly if the URL matches with one of the whitelisted clients.
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Args:
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registered_user_id: The MXID that has been registered as a previous step of
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of this SSO login.
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request: The request to respond to.
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client_redirect_url: The URL to which to offer to redirect the user (or to
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redirect them directly if whitelisted).
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new_user: set to true to use wording for the consent appropriate to a user
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who has just registered.
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auth_provider_id: the ID of the SSO IdP which was used to log in. This
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is used to track counts of sucessful logins by IdP.
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"""
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await self._auth_handler.complete_sso_login(
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registered_user_id,
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auth_provider_id,
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request,
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client_redirect_url,
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new_user=new_user,
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_state_events_in_room(
|
|
self, room_id: str, types: Iterable[Tuple[str, Optional[str]]]
|
|
) -> Generator[defer.Deferred, Any, Iterable[EventBase]]:
|
|
"""Gets current state events for the given room.
|
|
|
|
(This is exposed for compatibility with the old SpamCheckerApi. We should
|
|
probably deprecate it and replace it with an async method in a subclass.)
|
|
|
|
Args:
|
|
room_id: The room ID to get state events in.
|
|
types: The event type and state key (using None
|
|
to represent 'any') of the room state to acquire.
|
|
|
|
Returns:
|
|
twisted.internet.defer.Deferred[list(synapse.events.FrozenEvent)]:
|
|
The filtered state events in the room.
|
|
"""
|
|
state_ids = yield defer.ensureDeferred(
|
|
self._store.get_filtered_current_state_ids(
|
|
room_id=room_id, state_filter=StateFilter.from_types(types)
|
|
)
|
|
)
|
|
state = yield defer.ensureDeferred(self._store.get_events(state_ids.values()))
|
|
return state.values()
|
|
|
|
async def create_and_send_event_into_room(self, event_dict: JsonDict) -> EventBase:
|
|
"""Create and send an event into a room. Membership events are currently not supported.
|
|
|
|
Args:
|
|
event_dict: A dictionary representing the event to send.
|
|
Required keys are `type`, `room_id`, `sender` and `content`.
|
|
|
|
Returns:
|
|
The event that was sent. If state event deduplication happened, then
|
|
the previous, duplicate event instead.
|
|
|
|
Raises:
|
|
SynapseError if the event was not allowed.
|
|
"""
|
|
# Create a requester object
|
|
requester = create_requester(
|
|
event_dict["sender"], authenticated_entity=self._server_name
|
|
)
|
|
|
|
# Create and send the event
|
|
(
|
|
event,
|
|
_,
|
|
) = await self._hs.get_event_creation_handler().create_and_send_nonmember_event(
|
|
requester,
|
|
event_dict,
|
|
ratelimit=False,
|
|
ignore_shadow_ban=True,
|
|
)
|
|
|
|
return event
|
|
|
|
async def send_local_online_presence_to(self, users: Iterable[str]) -> None:
|
|
"""
|
|
Forces the equivalent of a presence initial_sync for a set of local or remote
|
|
users. The users will receive presence for all currently online users that they
|
|
are considered interested in.
|
|
|
|
Updates to remote users will be sent immediately, whereas local users will receive
|
|
them on their next sync attempt.
|
|
|
|
Note that this method can only be run on the process that is configured to write to the
|
|
presence stream. By default this is the main process.
|
|
"""
|
|
if self._hs._instance_name not in self._hs.config.worker.writers.presence:
|
|
raise Exception(
|
|
"send_local_online_presence_to can only be run "
|
|
"on the process that is configured to write to the "
|
|
"presence stream (by default this is the main process)",
|
|
)
|
|
|
|
local_users = set()
|
|
remote_users = set()
|
|
for user in users:
|
|
if self._hs.is_mine_id(user):
|
|
local_users.add(user)
|
|
else:
|
|
remote_users.add(user)
|
|
|
|
# We pull out the presence handler here to break a cyclic
|
|
# dependency between the presence router and module API.
|
|
presence_handler = self._hs.get_presence_handler()
|
|
|
|
if local_users:
|
|
# Force a presence initial_sync for these users next time they sync.
|
|
await presence_handler.send_full_presence_to_users(local_users)
|
|
|
|
for user in remote_users:
|
|
# Retrieve presence state for currently online users that this user
|
|
# is considered interested in.
|
|
presence_events, _ = await self._presence_stream.get_new_events(
|
|
UserID.from_string(user), from_key=None, include_offline=False
|
|
)
|
|
|
|
# Send to remote destinations.
|
|
destination = UserID.from_string(user).domain
|
|
presence_handler.get_federation_queue().send_presence_to_destinations(
|
|
presence_events, destination
|
|
)
|
|
|
|
def looping_background_call(
|
|
self,
|
|
f: Callable,
|
|
msec: float,
|
|
*args,
|
|
desc: Optional[str] = None,
|
|
run_on_all_instances: bool = False,
|
|
**kwargs,
|
|
):
|
|
"""Wraps a function as a background process and calls it repeatedly.
|
|
|
|
NOTE: Will only run on the instance that is configured to run
|
|
background processes (which is the main process by default), unless
|
|
`run_on_all_workers` is set.
|
|
|
|
Waits `msec` initially before calling `f` for the first time.
|
|
|
|
Args:
|
|
f: The function to call repeatedly. f can be either synchronous or
|
|
asynchronous, and must follow Synapse's logcontext rules.
|
|
More info about logcontexts is available at
|
|
https://matrix-org.github.io/synapse/latest/log_contexts.html
|
|
msec: How long to wait between calls in milliseconds.
|
|
*args: Positional arguments to pass to function.
|
|
desc: The background task's description. Default to the function's name.
|
|
run_on_all_instances: Whether to run this on all instances, rather
|
|
than just the instance configured to run background tasks.
|
|
**kwargs: Key arguments to pass to function.
|
|
"""
|
|
if desc is None:
|
|
desc = f.__name__
|
|
|
|
if self._hs.config.worker.run_background_tasks or run_on_all_instances:
|
|
self._clock.looping_call(
|
|
run_as_background_process,
|
|
msec,
|
|
desc,
|
|
f,
|
|
*args,
|
|
**kwargs,
|
|
)
|
|
else:
|
|
logger.warning(
|
|
"Not running looping call %s as the configuration forbids it",
|
|
f,
|
|
)
|
|
|
|
async def send_mail(
|
|
self,
|
|
recipient: str,
|
|
subject: str,
|
|
html: str,
|
|
text: str,
|
|
):
|
|
"""Send an email on behalf of the homeserver.
|
|
|
|
Args:
|
|
recipient: The email address for the recipient.
|
|
subject: The email's subject.
|
|
html: The email's HTML content.
|
|
text: The email's text content.
|
|
"""
|
|
await self._send_email_handler.send_email(
|
|
email_address=recipient,
|
|
subject=subject,
|
|
app_name=self.email_app_name,
|
|
html=html,
|
|
text=text,
|
|
)
|
|
|
|
def read_templates(
|
|
self,
|
|
filenames: List[str],
|
|
custom_template_directory: Optional[str] = None,
|
|
) -> List[jinja2.Template]:
|
|
"""Read and load the content of the template files at the given location.
|
|
By default, Synapse will look for these templates in its configured template
|
|
directory, but another directory to search in can be provided.
|
|
|
|
Args:
|
|
filenames: The name of the template files to look for.
|
|
custom_template_directory: An additional directory to look for the files in.
|
|
|
|
Returns:
|
|
A list containing the loaded templates, with the orders matching the one of
|
|
the filenames parameter.
|
|
"""
|
|
return self._hs.config.read_templates(
|
|
filenames,
|
|
(td for td in (self.custom_template_dir, custom_template_directory) if td),
|
|
)
|
|
|
|
def is_mine(self, id: Union[str, DomainSpecificString]) -> bool:
|
|
"""
|
|
Checks whether an ID (user id, room, ...) comes from this homeserver.
|
|
|
|
Args:
|
|
id: any Matrix id (e.g. user id, room id, ...), either as a raw id,
|
|
e.g. string "@user:example.com" or as a parsed UserID, RoomID, ...
|
|
Returns:
|
|
True if id comes from this homeserver, False otherwise.
|
|
|
|
Added in Synapse v1.44.0.
|
|
"""
|
|
if isinstance(id, DomainSpecificString):
|
|
return self._hs.is_mine(id)
|
|
else:
|
|
return self._hs.is_mine_id(id)
|
|
|
|
async def get_user_ip_and_agents(
|
|
self, user_id: str, since_ts: int = 0
|
|
) -> List[UserIpAndAgent]:
|
|
"""
|
|
Return the list of user IPs and agents for a user.
|
|
|
|
Args:
|
|
user_id: the id of a user, local or remote
|
|
since_ts: a timestamp in seconds since the epoch,
|
|
or the epoch itself if not specified.
|
|
Returns:
|
|
The list of all UserIpAndAgent that the user has
|
|
used to connect to this homeserver since `since_ts`.
|
|
If the user is remote, this list is empty.
|
|
|
|
Added in Synapse v1.44.0.
|
|
"""
|
|
# Don't hit the db if this is not a local user.
|
|
is_mine = False
|
|
try:
|
|
# Let's be defensive against ill-formed strings.
|
|
if self.is_mine(user_id):
|
|
is_mine = True
|
|
except Exception:
|
|
pass
|
|
|
|
if is_mine:
|
|
raw_data = await self._store.get_user_ip_and_agents(
|
|
UserID.from_string(user_id), since_ts
|
|
)
|
|
# Sanitize some of the data. We don't want to return tokens.
|
|
return [
|
|
UserIpAndAgent(
|
|
ip=str(data["ip"]),
|
|
user_agent=str(data["user_agent"]),
|
|
last_seen=int(data["last_seen"]),
|
|
)
|
|
for data in raw_data
|
|
]
|
|
else:
|
|
return []
|
|
|
|
|
|
class PublicRoomListManager:
|
|
"""Contains methods for adding to, removing from and querying whether a room
|
|
is in the public room list.
|
|
"""
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
self._store = hs.get_datastore()
|
|
|
|
async def room_is_in_public_room_list(self, room_id: str) -> bool:
|
|
"""Checks whether a room is in the public room list.
|
|
|
|
Args:
|
|
room_id: The ID of the room.
|
|
|
|
Returns:
|
|
Whether the room is in the public room list. Returns False if the room does
|
|
not exist.
|
|
"""
|
|
room = await self._store.get_room(room_id)
|
|
if not room:
|
|
return False
|
|
|
|
return room.get("is_public", False)
|
|
|
|
async def add_room_to_public_room_list(self, room_id: str) -> None:
|
|
"""Publishes a room to the public room list.
|
|
|
|
Args:
|
|
room_id: The ID of the room.
|
|
"""
|
|
await self._store.set_room_is_public(room_id, True)
|
|
|
|
async def remove_room_from_public_room_list(self, room_id: str) -> None:
|
|
"""Removes a room from the public room list.
|
|
|
|
Args:
|
|
room_id: The ID of the room.
|
|
"""
|
|
await self._store.set_room_is_public(room_id, False)
|