810 lines
29 KiB
Python
810 lines
29 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 matrix.org
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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 performing events on rooms."""
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from twisted.internet import defer
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from synapse.types import UserID, RoomAlias, RoomID
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from synapse.api.constants import Membership
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from synapse.api.errors import RoomError, StoreError, SynapseError
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from synapse.api.events.room import (
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RoomTopicEvent, MessageEvent, InviteJoinEvent, RoomMemberEvent,
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RoomConfigEvent
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)
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from synapse.api.streams.event import EventStream, MessagesStreamData
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from synapse.util import stringutils
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from ._base import BaseHandler
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import logging
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import json
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logger = logging.getLogger(__name__)
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class MessageHandler(BaseHandler):
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def __init__(self, hs):
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super(MessageHandler, self).__init__(hs)
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self.hs = hs
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self.clock = hs.get_clock()
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self.event_factory = hs.get_event_factory()
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@defer.inlineCallbacks
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def get_message(self, msg_id=None, room_id=None, sender_id=None,
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user_id=None):
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""" Retrieve a message.
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Args:
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msg_id (str): The message ID to obtain.
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room_id (str): The room where the message resides.
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sender_id (str): The user ID of the user who sent the message.
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user_id (str): The user ID of the user making this request.
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Returns:
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The message, or None if no message exists.
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Raises:
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SynapseError if something went wrong.
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"""
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yield self.auth.check_joined_room(room_id, user_id)
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# Pull out the message from the db
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msg = yield self.store.get_message(room_id=room_id,
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msg_id=msg_id,
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user_id=sender_id)
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if msg:
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defer.returnValue(msg)
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defer.returnValue(None)
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@defer.inlineCallbacks
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def send_message(self, event=None, suppress_auth=False, stamp_event=True):
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""" Send a message.
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Args:
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event : The message event to store.
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suppress_auth (bool) : True to suppress auth for this message. This
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is primarily so the home server can inject messages into rooms at
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will.
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stamp_event (bool) : True to stamp event content with server keys.
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Raises:
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SynapseError if something went wrong.
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"""
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if stamp_event:
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event.content["hsob_ts"] = int(self.clock.time_msec())
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with (yield self.room_lock.lock(event.room_id)):
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if not suppress_auth:
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yield self.auth.check(event, raises=True)
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# store message in db
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store_id = yield self.store.persist_event(event)
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event.destinations = yield self.store.get_joined_hosts_for_room(
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event.room_id
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)
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self.notifier.on_new_room_event(event, store_id)
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yield self.hs.get_federation().handle_new_event(event)
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@defer.inlineCallbacks
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def get_messages(self, user_id=None, room_id=None, pagin_config=None,
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feedback=False):
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"""Get messages in a room.
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Args:
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user_id (str): The user requesting messages.
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room_id (str): The room they want messages from.
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pagin_config (synapse.api.streams.PaginationConfig): The pagination
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config rules to apply, if any.
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feedback (bool): True to get compressed feedback with the messages
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Returns:
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dict: Pagination API results
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"""
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yield self.auth.check_joined_room(room_id, user_id)
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data_source = [MessagesStreamData(self.hs, room_id=room_id,
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feedback=feedback)]
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event_stream = EventStream(user_id, data_source)
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pagin_config = yield event_stream.fix_tokens(pagin_config)
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data_chunk = yield event_stream.get_chunk(config=pagin_config)
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defer.returnValue(data_chunk)
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@defer.inlineCallbacks
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def store_room_data(self, event=None, stamp_event=True):
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""" Stores data for a room.
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Args:
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event : The room path event
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stamp_event (bool) : True to stamp event content with server keys.
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Raises:
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SynapseError if something went wrong.
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"""
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with (yield self.room_lock.lock(event.room_id)):
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yield self.auth.check(event, raises=True)
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if stamp_event:
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event.content["hsob_ts"] = int(self.clock.time_msec())
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yield self.state_handler.handle_new_event(event)
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# store in db
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store_id = yield self.store.store_room_data(
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room_id=event.room_id,
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etype=event.type,
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state_key=event.state_key,
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content=json.dumps(event.content)
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)
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event.destinations = yield self.store.get_joined_hosts_for_room(
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event.room_id
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)
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self.notifier.on_new_room_event(event, store_id)
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yield self.hs.get_federation().handle_new_event(event)
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@defer.inlineCallbacks
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def get_room_data(self, user_id=None, room_id=None,
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event_type=None, state_key="",
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public_room_rules=[],
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private_room_rules=["join"]):
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""" Get data from a room.
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Args:
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event : The room path event
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public_room_rules : A list of membership states the user can be in,
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in order to read this data IN A PUBLIC ROOM. An empty list means
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'any state'.
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private_room_rules : A list of membership states the user can be
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in, in order to read this data IN A PRIVATE ROOM. An empty list
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means 'any state'.
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Returns:
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The path data content.
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Raises:
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SynapseError if something went wrong.
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"""
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if event_type == RoomTopicEvent.TYPE:
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# anyone invited/joined can read the topic
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private_room_rules = ["invite", "join"]
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# does this room exist
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room = yield self.store.get_room(room_id)
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if not room:
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raise RoomError(403, "Room does not exist.")
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# does this user exist in this room
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member = yield self.store.get_room_member(
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room_id=room_id,
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user_id="" if not user_id else user_id)
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member_state = member.membership if member else None
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if room.is_public and public_room_rules:
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# make sure the user meets public room rules
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if member_state not in public_room_rules:
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raise RoomError(403, "Member does not meet public room rules.")
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elif not room.is_public and private_room_rules:
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# make sure the user meets private room rules
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if member_state not in private_room_rules:
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raise RoomError(
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403, "Member does not meet private room rules.")
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data = yield self.store.get_room_data(room_id, event_type, state_key)
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defer.returnValue(data)
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@defer.inlineCallbacks
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def get_feedback(self, room_id=None, msg_sender_id=None, msg_id=None,
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user_id=None, fb_sender_id=None, fb_type=None):
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yield self.auth.check_joined_room(room_id, user_id)
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# Pull out the feedback from the db
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fb = yield self.store.get_feedback(
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room_id=room_id, msg_id=msg_id, msg_sender_id=msg_sender_id,
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fb_sender_id=fb_sender_id, fb_type=fb_type
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)
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if fb:
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defer.returnValue(fb)
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defer.returnValue(None)
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@defer.inlineCallbacks
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def send_feedback(self, event, stamp_event=True):
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if stamp_event:
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event.content["hsob_ts"] = int(self.clock.time_msec())
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with (yield self.room_lock.lock(event.room_id)):
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yield self.auth.check(event, raises=True)
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# store message in db
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store_id = yield self.store.persist_event(event)
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event.destinations = yield self.store.get_joined_hosts_for_room(
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event.room_id
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)
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yield self.hs.get_federation().handle_new_event(event)
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self.notifier.on_new_room_event(event, store_id)
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@defer.inlineCallbacks
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def snapshot_all_rooms(self, user_id=None, pagin_config=None,
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feedback=False):
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"""Retrieve a snapshot of all rooms the user is invited or has joined.
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This snapshot may include messages for all rooms where the user is
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joined, depending on the pagination config.
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Args:
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user_id (str): The ID of the user making the request.
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pagin_config (synapse.api.streams.PaginationConfig): The pagination
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config used to determine how many messages *PER ROOM* to return.
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feedback (bool): True to get feedback along with these messages.
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Returns:
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A list of dicts with "room_id" and "membership" keys for all rooms
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the user is currently invited or joined in on. Rooms where the user
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is joined on, may return a "messages" key with messages, depending
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on the specified PaginationConfig.
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"""
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room_list = yield self.store.get_rooms_for_user_where_membership_is(
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user_id=user_id,
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membership_list=[Membership.INVITE, Membership.JOIN]
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)
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for room_info in room_list:
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if room_info["membership"] != Membership.JOIN:
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continue
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try:
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event_chunk = yield self.get_messages(
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user_id=user_id,
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pagin_config=pagin_config,
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feedback=feedback,
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room_id=room_info["room_id"]
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)
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room_info["messages"] = event_chunk
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except:
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pass
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defer.returnValue(room_list)
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class RoomCreationHandler(BaseHandler):
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@defer.inlineCallbacks
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def create_room(self, user_id, room_id, config):
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""" Creates a new room.
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Args:
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user_id (str): The ID of the user creating the new room.
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room_id (str): The proposed ID for the new room. Can be None, in
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which case one will be created for you.
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config (dict) : A dict of configuration options.
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Returns:
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The new room ID.
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Raises:
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SynapseError if the room ID was taken, couldn't be stored, or
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something went horribly wrong.
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"""
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if "room_alias_name" in config:
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room_alias = RoomAlias.create_local(
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config["room_alias_name"],
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self.hs
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)
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mapping = yield self.store.get_association_from_room_alias(
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room_alias
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)
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if mapping:
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raise SynapseError(400, "Room alias already taken")
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else:
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room_alias = None
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if room_id:
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# Ensure room_id is the correct type
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room_id_obj = RoomID.from_string(room_id, self.hs)
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if not room_id_obj.is_mine:
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raise SynapseError(400, "Room id must be local")
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yield self.store.store_room(
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room_id=room_id,
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room_creator_user_id=user_id,
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is_public=config["visibility"] == "public"
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)
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else:
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# autogen room IDs and try to create it. We may clash, so just
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# try a few times till one goes through, giving up eventually.
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attempts = 0
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room_id = None
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while attempts < 5:
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try:
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random_string = stringutils.random_string(18)
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gen_room_id = RoomID.create_local(random_string, self.hs)
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yield self.store.store_room(
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room_id=gen_room_id.to_string(),
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room_creator_user_id=user_id,
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is_public=config["visibility"] == "public"
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)
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room_id = gen_room_id.to_string()
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break
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except StoreError:
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attempts += 1
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if not room_id:
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raise StoreError(500, "Couldn't generate a room ID.")
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config_event = self.event_factory.create_event(
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etype=RoomConfigEvent.TYPE,
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room_id=room_id,
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user_id=user_id,
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content=config,
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)
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if room_alias:
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yield self.store.create_room_alias_association(
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room_id=room_id,
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room_alias=room_alias,
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servers=[self.hs.hostname],
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)
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yield self.state_handler.handle_new_event(config_event)
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# store_id = persist...
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yield self.hs.get_federation().handle_new_event(config_event)
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# self.notifier.on_new_room_event(event, store_id)
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content = {"membership": Membership.JOIN}
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join_event = self.event_factory.create_event(
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etype=RoomMemberEvent.TYPE,
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target_user_id=user_id,
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room_id=room_id,
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user_id=user_id,
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membership=Membership.JOIN,
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content=content
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)
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yield self.hs.get_handlers().room_member_handler.change_membership(
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join_event,
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broadcast_msg=True,
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do_auth=False
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)
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result = {"room_id": room_id}
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if room_alias:
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result["room_alias"] = room_alias.to_string()
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defer.returnValue(result)
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class RoomMemberHandler(BaseHandler):
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# TODO(paul): This handler currently contains a messy conflation of
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# low-level API that works on UserID objects and so on, and REST-level
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# API that takes ID strings and returns pagination chunks. These concerns
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# ought to be separated out a lot better.
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def __init__(self, hs):
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super(RoomMemberHandler, self).__init__(hs)
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self.clock = hs.get_clock()
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self.distributor = hs.get_distributor()
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self.distributor.declare("user_joined_room")
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@defer.inlineCallbacks
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def get_room_members(self, room_id, membership=Membership.JOIN):
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hs = self.hs
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memberships = yield self.store.get_room_members(
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room_id=room_id, membership=membership
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)
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defer.returnValue([hs.parse_userid(m.user_id) for m in memberships])
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@defer.inlineCallbacks
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def fetch_room_distributions_into(self, room_id, localusers=None,
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remotedomains=None, ignore_user=None):
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"""Fetch the distribution of a room, adding elements to either
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'localusers' or 'remotedomains', which should be a set() if supplied.
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If ignore_user is set, ignore that user.
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This function returns nothing; its result is performed by the
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side-effect on the two passed sets. This allows easy accumulation of
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member lists of multiple rooms at once if required.
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"""
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members = yield self.get_room_members(room_id)
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for member in members:
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if ignore_user is not None and member == ignore_user:
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continue
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if member.is_mine:
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if localusers is not None:
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localusers.add(member)
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else:
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if remotedomains is not None:
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remotedomains.add(member.domain)
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@defer.inlineCallbacks
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def get_room_members_as_pagination_chunk(self, room_id=None, user_id=None,
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limit=0, start_tok=None,
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end_tok=None):
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"""Retrieve a list of room members in the room.
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Args:
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room_id (str): The room to get the member list for.
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user_id (str): The ID of the user making the request.
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limit (int): The max number of members to return.
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start_tok (str): Optional. The start token if known.
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end_tok (str): Optional. The end token if known.
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Returns:
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dict: A Pagination streamable dict.
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Raises:
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SynapseError if something goes wrong.
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"""
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yield self.auth.check_joined_room(room_id, user_id)
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member_list = yield self.store.get_room_members(room_id=room_id)
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event_list = [
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entry.as_event(self.event_factory).get_dict()
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for entry in member_list
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]
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chunk_data = {
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"start": "START",
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"end": "END",
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"chunk": event_list
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}
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# TODO honor Pagination stream params
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# TODO snapshot this list to return on subsequent requests when
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# paginating
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defer.returnValue(chunk_data)
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@defer.inlineCallbacks
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def get_room_member(self, room_id, member_user_id, auth_user_id):
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"""Retrieve a room member from a room.
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Args:
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room_id : The room the member is in.
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member_user_id : The member's user ID
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auth_user_id : The user ID of the user making this request.
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Returns:
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The room member, or None if this member does not exist.
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Raises:
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SynapseError if something goes wrong.
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"""
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yield self.auth.check_joined_room(room_id, auth_user_id)
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member = yield self.store.get_room_member(user_id=member_user_id,
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room_id=room_id)
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defer.returnValue(member)
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@defer.inlineCallbacks
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def change_membership(self, event=None, broadcast_msg=False, do_auth=True):
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""" Change the membership status of a user in a room.
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Args:
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event (SynapseEvent): The membership event
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broadcast_msg (bool): True to inject a membership message into this
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room on success.
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Raises:
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SynapseError if there was a problem changing the membership.
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"""
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#broadcast_msg = False
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prev_state = yield self.store.get_room_member(
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event.target_user_id, event.room_id
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)
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if prev_state and prev_state.membership == event.membership:
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# treat this event as a NOOP.
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if do_auth: # This is mainly to fix a unit test.
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yield self.auth.check(event, raises=True)
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defer.returnValue({})
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return
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room_id = event.room_id
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# If we're trying to join a room then we have to do this differently
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# if this HS is not currently in the room, i.e. we have to do the
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# invite/join dance.
|
|
if event.membership == Membership.JOIN:
|
|
yield self._do_join(
|
|
event, do_auth=do_auth, broadcast_msg=broadcast_msg
|
|
)
|
|
else:
|
|
# This is not a JOIN, so we can handle it normally.
|
|
if do_auth:
|
|
yield self.auth.check(event, raises=True)
|
|
|
|
prev_state = yield self.store.get_room_member(
|
|
event.target_user_id, event.room_id
|
|
)
|
|
if prev_state and prev_state.membership == event.membership:
|
|
# double same action, treat this event as a NOOP.
|
|
defer.returnValue({})
|
|
return
|
|
|
|
yield self.state_handler.handle_new_event(event)
|
|
yield self._do_local_membership_update(
|
|
event,
|
|
membership=event.content["membership"],
|
|
broadcast_msg=broadcast_msg,
|
|
)
|
|
|
|
defer.returnValue({"room_id": room_id})
|
|
|
|
@defer.inlineCallbacks
|
|
def join_room_alias(self, joinee, room_alias, do_auth=True, content={}):
|
|
directory_handler = self.hs.get_handlers().directory_handler
|
|
mapping = yield directory_handler.get_association(room_alias)
|
|
|
|
if not mapping:
|
|
raise SynapseError(404, "No such room alias")
|
|
|
|
room_id = mapping["room_id"]
|
|
hosts = mapping["servers"]
|
|
if not hosts:
|
|
raise SynapseError(404, "No known servers")
|
|
|
|
host = hosts[0]
|
|
|
|
content.update({"membership": Membership.JOIN})
|
|
new_event = self.event_factory.create_event(
|
|
etype=RoomMemberEvent.TYPE,
|
|
target_user_id=joinee.to_string(),
|
|
room_id=room_id,
|
|
user_id=joinee.to_string(),
|
|
membership=Membership.JOIN,
|
|
content=content,
|
|
)
|
|
|
|
yield self._do_join(new_event, room_host=host, do_auth=True)
|
|
|
|
defer.returnValue({"room_id": room_id})
|
|
|
|
@defer.inlineCallbacks
|
|
def _do_join(self, event, room_host=None, do_auth=True, broadcast_msg=True):
|
|
joinee = self.hs.parse_userid(event.target_user_id)
|
|
# room_id = RoomID.from_string(event.room_id, self.hs)
|
|
room_id = event.room_id
|
|
|
|
# If event doesn't include a display name, add one.
|
|
yield self._fill_out_join_content(
|
|
joinee, event.content
|
|
)
|
|
|
|
# XXX: We don't do an auth check if we are doing an invite
|
|
# join dance for now, since we're kinda implicitly checking
|
|
# that we are allowed to join when we decide whether or not we
|
|
# need to do the invite/join dance.
|
|
|
|
room = yield self.store.get_room(room_id)
|
|
|
|
if room:
|
|
should_do_dance = False
|
|
elif room_host:
|
|
should_do_dance = True
|
|
else:
|
|
prev_state = yield self.store.get_room_member(
|
|
joinee.to_string(), room_id
|
|
)
|
|
|
|
if prev_state and prev_state.membership == Membership.INVITE:
|
|
room = yield self.store.get_room(room_id)
|
|
inviter = UserID.from_string(
|
|
prev_state.sender, self.hs
|
|
)
|
|
|
|
should_do_dance = not inviter.is_mine and not room
|
|
room_host = inviter.domain
|
|
else:
|
|
should_do_dance = False
|
|
|
|
# We want to do the _do_update inside the room lock.
|
|
if not should_do_dance:
|
|
logger.debug("Doing normal join")
|
|
|
|
if do_auth:
|
|
yield self.auth.check(event, raises=True)
|
|
|
|
yield self.state_handler.handle_new_event(event)
|
|
yield self._do_local_membership_update(
|
|
event,
|
|
membership=event.content["membership"],
|
|
broadcast_msg=broadcast_msg,
|
|
)
|
|
|
|
|
|
if should_do_dance:
|
|
yield self._do_invite_join_dance(
|
|
room_id=room_id,
|
|
joinee=event.user_id,
|
|
target_host=room_host,
|
|
content=event.content,
|
|
)
|
|
|
|
user = self.hs.parse_userid(event.user_id)
|
|
self.distributor.fire(
|
|
"user_joined_room", user=user, room_id=room_id
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _fill_out_join_content(self, user_id, content):
|
|
# If event doesn't include a display name, add one.
|
|
profile_handler = self.hs.get_handlers().profile_handler
|
|
if "displayname" not in content:
|
|
try:
|
|
display_name = yield profile_handler.get_displayname(
|
|
user_id
|
|
)
|
|
|
|
if display_name:
|
|
content["displayname"] = display_name
|
|
except:
|
|
logger.exception("Failed to set display_name")
|
|
|
|
if "avatar_url" not in content:
|
|
try:
|
|
avatar_url = yield profile_handler.get_avatar_url(
|
|
user_id
|
|
)
|
|
|
|
if avatar_url:
|
|
content["avatar_url"] = avatar_url
|
|
except:
|
|
logger.exception("Failed to set display_name")
|
|
|
|
@defer.inlineCallbacks
|
|
def _should_invite_join(self, room_id, prev_state, do_auth):
|
|
logger.debug("_should_invite_join: room_id: %s", room_id)
|
|
|
|
# XXX: We don't do an auth check if we are doing an invite
|
|
# join dance for now, since we're kinda implicitly checking
|
|
# that we are allowed to join when we decide whether or not we
|
|
# need to do the invite/join dance.
|
|
|
|
# Only do an invite join dance if a) we were invited,
|
|
# b) the person inviting was from a differnt HS and c) we are
|
|
# not currently in the room
|
|
room_host = None
|
|
if prev_state and prev_state.membership == Membership.INVITE:
|
|
room = yield self.store.get_room(room_id)
|
|
inviter = UserID.from_string(
|
|
prev_state.sender, self.hs
|
|
)
|
|
|
|
is_remote_invite_join = not inviter.is_mine and not room
|
|
room_host = inviter.domain
|
|
else:
|
|
is_remote_invite_join = False
|
|
|
|
defer.returnValue((is_remote_invite_join, room_host))
|
|
|
|
@defer.inlineCallbacks
|
|
def get_rooms_for_user(self, user, membership_list=[Membership.JOIN]):
|
|
"""Returns a list of roomids that the user has any of the given
|
|
membership states in."""
|
|
rooms = yield self.store.get_rooms_for_user_where_membership_is(
|
|
user_id=user.to_string(), membership_list=membership_list
|
|
)
|
|
|
|
defer.returnValue([r["room_id"] for r in rooms])
|
|
|
|
@defer.inlineCallbacks
|
|
def _do_local_membership_update(self, event, membership, broadcast_msg):
|
|
# store membership
|
|
store_id = yield self.store.store_room_member(
|
|
user_id=event.target_user_id,
|
|
sender=event.user_id,
|
|
room_id=event.room_id,
|
|
content=event.content,
|
|
membership=membership
|
|
)
|
|
|
|
# Send a PDU to all hosts who have joined the room.
|
|
destinations = yield self.store.get_joined_hosts_for_room(
|
|
event.room_id
|
|
)
|
|
|
|
# If we're inviting someone, then we should also send it to that
|
|
# HS.
|
|
if membership == Membership.INVITE:
|
|
host = UserID.from_string(
|
|
event.target_user_id, self.hs
|
|
).domain
|
|
destinations.append(host)
|
|
|
|
# If we are joining a remote HS, include that.
|
|
if membership == Membership.JOIN:
|
|
host = UserID.from_string(
|
|
event.target_user_id, self.hs
|
|
).domain
|
|
destinations.append(host)
|
|
|
|
event.destinations = list(set(destinations))
|
|
|
|
yield self.hs.get_federation().handle_new_event(event)
|
|
self.notifier.on_new_room_event(event, store_id)
|
|
|
|
if broadcast_msg:
|
|
yield self._inject_membership_msg(
|
|
source=event.user_id,
|
|
target=event.target_user_id,
|
|
room_id=event.room_id,
|
|
membership=event.content["membership"]
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _do_invite_join_dance(self, room_id, joinee, target_host, content):
|
|
logger.debug("Doing remote join dance")
|
|
|
|
# do invite join dance
|
|
federation = self.hs.get_federation()
|
|
new_event = self.event_factory.create_event(
|
|
etype=InviteJoinEvent.TYPE,
|
|
target_host=target_host,
|
|
room_id=room_id,
|
|
user_id=joinee,
|
|
content=content
|
|
)
|
|
|
|
new_event.destinations = [target_host]
|
|
|
|
yield self.store.store_room(
|
|
room_id, "", is_public=False
|
|
)
|
|
|
|
#yield self.state_handler.handle_new_event(event)
|
|
yield federation.handle_new_event(new_event)
|
|
yield federation.get_state_for_room(
|
|
target_host, room_id
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _inject_membership_msg(self, room_id=None, source=None, target=None,
|
|
membership=None):
|
|
# TODO this should be a different type of message, not m.text
|
|
if membership == Membership.INVITE:
|
|
body = "%s invited %s to the room." % (source, target)
|
|
elif membership == Membership.JOIN:
|
|
body = "%s joined the room." % (target)
|
|
elif membership == Membership.LEAVE:
|
|
body = "%s left the room." % (target)
|
|
else:
|
|
raise RoomError(500, "Unknown membership value %s" % membership)
|
|
|
|
membership_json = {
|
|
"msgtype": u"m.text",
|
|
"body": body,
|
|
"membership_source": source,
|
|
"membership_target": target,
|
|
"membership": membership,
|
|
}
|
|
|
|
msg_id = "m%s" % int(self.clock.time_msec())
|
|
|
|
event = self.event_factory.create_event(
|
|
etype=MessageEvent.TYPE,
|
|
room_id=room_id,
|
|
user_id="_homeserver_",
|
|
msg_id=msg_id,
|
|
content=membership_json
|
|
)
|
|
|
|
handler = self.hs.get_handlers().message_handler
|
|
yield handler.send_message(event, suppress_auth=True)
|
|
|
|
|
|
class RoomListHandler(BaseHandler):
|
|
|
|
@defer.inlineCallbacks
|
|
def get_public_room_list(self):
|
|
chunk = yield self.store.get_rooms(is_public=True, with_topics=True)
|
|
defer.returnValue({"start": "START", "end": "END", "chunk": chunk})
|