858 lines
29 KiB
Python
858 lines
29 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014, 2015 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Contains functions for performing events on rooms."""
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from twisted.internet import defer
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from ._base import BaseHandler
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from synapse.types import UserID, RoomAlias, RoomID
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from synapse.api.constants import (
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EventTypes, Membership, JoinRules, RoomCreationPreset,
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)
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from synapse.api.errors import AuthError, StoreError, SynapseError
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from synapse.util import stringutils, unwrapFirstError
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from synapse.util.async import run_on_reactor
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from signedjson.sign import verify_signed_json
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from signedjson.key import decode_verify_key_bytes
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from collections import OrderedDict
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from unpaddedbase64 import decode_base64
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import logging
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import math
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import string
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logger = logging.getLogger(__name__)
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class RoomCreationHandler(BaseHandler):
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PRESETS_DICT = {
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RoomCreationPreset.PRIVATE_CHAT: {
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"join_rules": JoinRules.INVITE,
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"history_visibility": "shared",
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"original_invitees_have_ops": False,
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},
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RoomCreationPreset.TRUSTED_PRIVATE_CHAT: {
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"join_rules": JoinRules.INVITE,
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"history_visibility": "shared",
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"original_invitees_have_ops": True,
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},
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RoomCreationPreset.PUBLIC_CHAT: {
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"join_rules": JoinRules.PUBLIC,
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"history_visibility": "shared",
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"original_invitees_have_ops": False,
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},
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}
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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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self.ratelimit(user_id)
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if "room_alias_name" in config:
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for wchar in string.whitespace:
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if wchar in config["room_alias_name"]:
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raise SynapseError(400, "Invalid characters in room alias")
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room_alias = RoomAlias.create(
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config["room_alias_name"],
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self.hs.hostname,
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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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invite_list = config.get("invite", [])
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for i in invite_list:
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try:
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UserID.from_string(i)
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except:
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raise SynapseError(400, "Invalid user_id: %s" % (i,))
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is_public = config.get("visibility", None) == "public"
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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)
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if not self.hs.is_mine(room_id_obj):
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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=is_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(
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random_string,
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self.hs.hostname,
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)
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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=is_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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if room_alias:
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directory_handler = self.hs.get_handlers().directory_handler
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yield directory_handler.create_association(
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user_id=user_id,
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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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preset_config = config.get(
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"preset",
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RoomCreationPreset.PUBLIC_CHAT
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if is_public
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else RoomCreationPreset.PRIVATE_CHAT
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)
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raw_initial_state = config.get("initial_state", [])
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initial_state = OrderedDict()
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for val in raw_initial_state:
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initial_state[(val["type"], val.get("state_key", ""))] = val["content"]
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creation_content = config.get("creation_content", {})
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user = UserID.from_string(user_id)
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creation_events = self._create_events_for_new_room(
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user, room_id,
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preset_config=preset_config,
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invite_list=invite_list,
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initial_state=initial_state,
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creation_content=creation_content,
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room_alias=room_alias,
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)
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msg_handler = self.hs.get_handlers().message_handler
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for event in creation_events:
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yield msg_handler.create_and_send_event(event, ratelimit=False)
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if "name" in config:
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name = config["name"]
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yield msg_handler.create_and_send_event({
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"type": EventTypes.Name,
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"room_id": room_id,
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"sender": user_id,
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"state_key": "",
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"content": {"name": name},
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}, ratelimit=False)
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if "topic" in config:
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topic = config["topic"]
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yield msg_handler.create_and_send_event({
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"type": EventTypes.Topic,
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"room_id": room_id,
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"sender": user_id,
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"state_key": "",
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"content": {"topic": topic},
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}, ratelimit=False)
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for invitee in invite_list:
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yield msg_handler.create_and_send_event({
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"type": EventTypes.Member,
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"state_key": invitee,
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"room_id": room_id,
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"sender": user_id,
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"content": {"membership": Membership.INVITE},
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}, ratelimit=False)
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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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yield directory_handler.send_room_alias_update_event(
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user_id, room_id
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)
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defer.returnValue(result)
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def _create_events_for_new_room(self, creator, room_id, preset_config,
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invite_list, initial_state, creation_content,
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room_alias):
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config = RoomCreationHandler.PRESETS_DICT[preset_config]
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creator_id = creator.to_string()
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event_keys = {
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"room_id": room_id,
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"sender": creator_id,
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"state_key": "",
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}
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def create(etype, content, **kwargs):
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e = {
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"type": etype,
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"content": content,
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}
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e.update(event_keys)
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e.update(kwargs)
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return e
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creation_content.update({"creator": creator.to_string()})
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creation_event = create(
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etype=EventTypes.Create,
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content=creation_content,
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)
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join_event = create(
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etype=EventTypes.Member,
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state_key=creator_id,
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content={
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"membership": Membership.JOIN,
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},
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)
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returned_events = [creation_event, join_event]
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if (EventTypes.PowerLevels, '') not in initial_state:
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power_level_content = {
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"users": {
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creator.to_string(): 100,
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},
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"users_default": 0,
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"events": {
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EventTypes.Name: 50,
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EventTypes.PowerLevels: 100,
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EventTypes.RoomHistoryVisibility: 100,
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EventTypes.CanonicalAlias: 50,
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EventTypes.RoomAvatar: 50,
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},
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"events_default": 0,
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"state_default": 50,
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"ban": 50,
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"kick": 50,
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"redact": 50,
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"invite": 0,
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}
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if config["original_invitees_have_ops"]:
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for invitee in invite_list:
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power_level_content["users"][invitee] = 100
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power_levels_event = create(
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etype=EventTypes.PowerLevels,
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content=power_level_content,
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)
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returned_events.append(power_levels_event)
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if room_alias and (EventTypes.CanonicalAlias, '') not in initial_state:
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room_alias_event = create(
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etype=EventTypes.CanonicalAlias,
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content={"alias": room_alias.to_string()},
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)
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returned_events.append(room_alias_event)
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if (EventTypes.JoinRules, '') not in initial_state:
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join_rules_event = create(
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etype=EventTypes.JoinRules,
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content={"join_rule": config["join_rules"]},
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)
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returned_events.append(join_rules_event)
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if (EventTypes.RoomHistoryVisibility, '') not in initial_state:
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history_event = create(
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etype=EventTypes.RoomHistoryVisibility,
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content={"history_visibility": config["history_visibility"]}
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)
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returned_events.append(history_event)
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for (etype, state_key), content in initial_state.items():
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returned_events.append(create(
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etype=etype,
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state_key=state_key,
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content=content,
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))
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return returned_events
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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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self.distributor.declare("user_left_room")
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@defer.inlineCallbacks
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def get_room_members(self, room_id):
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users = yield self.store.get_users_in_room(room_id)
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defer.returnValue([UserID.from_string(u) for u in users])
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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 self.hs.is_mine(member):
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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 change_membership(self, event, context, 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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Raises:
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SynapseError if there was a problem changing the membership.
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"""
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target_user_id = event.state_key
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prev_state = context.current_state.get(
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(EventTypes.Member, target_user_id),
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None
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)
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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.
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if event.membership == Membership.JOIN:
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yield self._do_join(event, context, do_auth=do_auth)
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else:
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if event.membership == Membership.LEAVE:
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is_host_in_room = yield self.is_host_in_room(room_id, context)
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if not is_host_in_room:
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# Rejecting an invite, rather than leaving a joined room
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handler = self.hs.get_handlers().federation_handler
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inviter = yield self.get_inviter(event)
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if not inviter:
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# return the same error as join_room_alias does
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raise SynapseError(404, "No known servers")
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yield handler.do_remotely_reject_invite(
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[inviter.domain],
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room_id,
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event.user_id
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)
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defer.returnValue({"room_id": room_id})
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return
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# FIXME: This isn't idempotency.
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if prev_state and prev_state.membership == event.membership:
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# double same action, treat this event as a NOOP.
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defer.returnValue({})
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return
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yield self._do_local_membership_update(
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event,
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membership=event.content["membership"],
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context=context,
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do_auth=do_auth,
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)
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if prev_state and prev_state.membership == Membership.JOIN:
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user = UserID.from_string(event.user_id)
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self.distributor.fire(
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"user_left_room", user=user, room_id=event.room_id
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)
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defer.returnValue({"room_id": room_id})
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@defer.inlineCallbacks
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def join_room_alias(self, joinee, room_alias, content={}):
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directory_handler = self.hs.get_handlers().directory_handler
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mapping = yield directory_handler.get_association(room_alias)
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if not mapping:
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raise SynapseError(404, "No such room alias")
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room_id = mapping["room_id"]
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hosts = mapping["servers"]
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if not hosts:
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raise SynapseError(404, "No known servers")
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# If event doesn't include a display name, add one.
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yield self.distributor.fire(
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"collect_presencelike_data", joinee, content
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)
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content.update({"membership": Membership.JOIN})
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builder = self.event_builder_factory.new({
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"type": EventTypes.Member,
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"state_key": joinee.to_string(),
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"room_id": room_id,
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"sender": joinee.to_string(),
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"membership": Membership.JOIN,
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"content": content,
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})
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event, context = yield self._create_new_client_event(builder)
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yield self._do_join(event, context, room_hosts=hosts, do_auth=True)
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defer.returnValue({"room_id": room_id})
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@defer.inlineCallbacks
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def _do_join(self, event, context, room_hosts=None, do_auth=True):
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room_id = event.room_id
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# XXX: We don't do an auth check if we are doing an invite
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# join dance for now, since we're kinda implicitly checking
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# that we are allowed to join when we decide whether or not we
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# need to do the invite/join dance.
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is_host_in_room = yield self.is_host_in_room(room_id, context)
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if is_host_in_room:
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should_do_dance = False
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elif room_hosts: # TODO: Shouldn't this be remote_room_host?
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should_do_dance = True
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else:
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inviter = yield self.get_inviter(event)
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if not inviter:
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# return the same error as join_room_alias does
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raise SynapseError(404, "No known servers")
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should_do_dance = not self.hs.is_mine(inviter)
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room_hosts = [inviter.domain]
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if should_do_dance:
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handler = self.hs.get_handlers().federation_handler
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yield handler.do_invite_join(
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room_hosts,
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room_id,
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event.user_id,
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event.content # FIXME To get a non-frozen dict
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)
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else:
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logger.debug("Doing normal join")
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yield self._do_local_membership_update(
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event,
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membership=event.content["membership"],
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context=context,
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do_auth=do_auth,
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)
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user = UserID.from_string(event.user_id)
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yield self.distributor.fire(
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"user_joined_room", user=user, room_id=room_id
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)
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@defer.inlineCallbacks
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def get_inviter(self, event):
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# TODO(markjh): get prev_state from snapshot
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prev_state = yield self.store.get_room_member(
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event.user_id, event.room_id
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)
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if prev_state and prev_state.membership == Membership.INVITE:
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defer.returnValue(UserID.from_string(prev_state.user_id))
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return
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elif "third_party_invite" in event.content:
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if "sender" in event.content["third_party_invite"]:
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inviter = UserID.from_string(
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event.content["third_party_invite"]["sender"]
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)
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defer.returnValue(inviter)
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defer.returnValue(None)
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@defer.inlineCallbacks
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def is_host_in_room(self, room_id, context):
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is_host_in_room = yield self.auth.check_host_in_room(
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room_id,
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self.hs.hostname
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)
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if not is_host_in_room:
|
|
# is *anyone* in the room?
|
|
room_member_keys = [
|
|
v for (k, v) in context.current_state.keys() if (
|
|
k == "m.room.member"
|
|
)
|
|
]
|
|
if len(room_member_keys) == 0:
|
|
# has the room been created so we can join it?
|
|
create_event = context.current_state.get(("m.room.create", ""))
|
|
if create_event:
|
|
is_host_in_room = True
|
|
defer.returnValue(is_host_in_room)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_joined_rooms_for_user(self, user):
|
|
"""Returns a list of roomids that the user has any of the given
|
|
membership states in."""
|
|
|
|
rooms = yield self.store.get_rooms_for_user(
|
|
user.to_string(),
|
|
)
|
|
|
|
# For some reason the list of events contains duplicates
|
|
# TODO(paul): work out why because I really don't think it should
|
|
room_ids = set(r.room_id for r in rooms)
|
|
|
|
defer.returnValue(room_ids)
|
|
|
|
@defer.inlineCallbacks
|
|
def _do_local_membership_update(self, event, membership, context,
|
|
do_auth):
|
|
yield run_on_reactor()
|
|
|
|
target_user = UserID.from_string(event.state_key)
|
|
|
|
yield self.handle_new_client_event(
|
|
event,
|
|
context,
|
|
extra_users=[target_user],
|
|
suppress_auth=(not do_auth),
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def do_3pid_invite(
|
|
self,
|
|
room_id,
|
|
inviter,
|
|
medium,
|
|
address,
|
|
id_server,
|
|
display_name,
|
|
token_id,
|
|
txn_id
|
|
):
|
|
invitee = yield self._lookup_3pid(
|
|
id_server, medium, address
|
|
)
|
|
|
|
if invitee:
|
|
# make sure it looks like a user ID; it'll throw if it's invalid.
|
|
UserID.from_string(invitee)
|
|
yield self.hs.get_handlers().message_handler.create_and_send_event(
|
|
{
|
|
"type": EventTypes.Member,
|
|
"content": {
|
|
"membership": unicode("invite")
|
|
},
|
|
"room_id": room_id,
|
|
"sender": inviter.to_string(),
|
|
"state_key": invitee,
|
|
},
|
|
token_id=token_id,
|
|
txn_id=txn_id,
|
|
)
|
|
else:
|
|
yield self._make_and_store_3pid_invite(
|
|
id_server,
|
|
display_name,
|
|
medium,
|
|
address,
|
|
room_id,
|
|
inviter,
|
|
token_id,
|
|
txn_id=txn_id
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _lookup_3pid(self, id_server, medium, address):
|
|
"""Looks up a 3pid in the passed identity server.
|
|
|
|
Args:
|
|
id_server (str): The server name (including port, if required)
|
|
of the identity server to use.
|
|
medium (str): The type of the third party identifier (e.g. "email").
|
|
address (str): The third party identifier (e.g. "foo@example.com").
|
|
|
|
Returns:
|
|
(str) the matrix ID of the 3pid, or None if it is not recognized.
|
|
"""
|
|
try:
|
|
data = yield self.hs.get_simple_http_client().get_json(
|
|
"https://%s/_matrix/identity/api/v1/lookup" % (id_server,),
|
|
{
|
|
"medium": medium,
|
|
"address": address,
|
|
}
|
|
)
|
|
|
|
if "mxid" in data:
|
|
if "signatures" not in data:
|
|
raise AuthError(401, "No signatures on 3pid binding")
|
|
self.verify_any_signature(data, id_server)
|
|
defer.returnValue(data["mxid"])
|
|
|
|
except IOError as e:
|
|
logger.warn("Error from identity server lookup: %s" % (e,))
|
|
defer.returnValue(None)
|
|
|
|
@defer.inlineCallbacks
|
|
def verify_any_signature(self, data, server_hostname):
|
|
if server_hostname not in data["signatures"]:
|
|
raise AuthError(401, "No signature from server %s" % (server_hostname,))
|
|
for key_name, signature in data["signatures"][server_hostname].items():
|
|
key_data = yield self.hs.get_simple_http_client().get_json(
|
|
"https://%s/_matrix/identity/api/v1/pubkey/%s" %
|
|
(server_hostname, key_name,),
|
|
)
|
|
if "public_key" not in key_data:
|
|
raise AuthError(401, "No public key named %s from %s" %
|
|
(key_name, server_hostname,))
|
|
verify_signed_json(
|
|
data,
|
|
server_hostname,
|
|
decode_verify_key_bytes(key_name, decode_base64(key_data["public_key"]))
|
|
)
|
|
return
|
|
|
|
@defer.inlineCallbacks
|
|
def _make_and_store_3pid_invite(
|
|
self,
|
|
id_server,
|
|
display_name,
|
|
medium,
|
|
address,
|
|
room_id,
|
|
user,
|
|
token_id,
|
|
txn_id
|
|
):
|
|
token, public_key, key_validity_url = (
|
|
yield self._ask_id_server_for_third_party_invite(
|
|
id_server,
|
|
medium,
|
|
address,
|
|
room_id,
|
|
user.to_string()
|
|
)
|
|
)
|
|
msg_handler = self.hs.get_handlers().message_handler
|
|
yield msg_handler.create_and_send_event(
|
|
{
|
|
"type": EventTypes.ThirdPartyInvite,
|
|
"content": {
|
|
"display_name": display_name,
|
|
"key_validity_url": key_validity_url,
|
|
"public_key": public_key,
|
|
},
|
|
"room_id": room_id,
|
|
"sender": user.to_string(),
|
|
"state_key": token,
|
|
},
|
|
token_id=token_id,
|
|
txn_id=txn_id,
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _ask_id_server_for_third_party_invite(
|
|
self, id_server, medium, address, room_id, sender):
|
|
is_url = "https://%s/_matrix/identity/api/v1/store-invite" % (id_server,)
|
|
data = yield self.hs.get_simple_http_client().post_urlencoded_get_json(
|
|
is_url,
|
|
{
|
|
"medium": medium,
|
|
"address": address,
|
|
"room_id": room_id,
|
|
"sender": sender,
|
|
}
|
|
)
|
|
# TODO: Check for success
|
|
token = data["token"]
|
|
public_key = data["public_key"]
|
|
key_validity_url = "https://%s/_matrix/identity/api/v1/pubkey/isvalid" % (
|
|
id_server,
|
|
)
|
|
defer.returnValue((token, public_key, key_validity_url))
|
|
|
|
|
|
class RoomListHandler(BaseHandler):
|
|
|
|
@defer.inlineCallbacks
|
|
def get_public_room_list(self):
|
|
chunk = yield self.store.get_rooms(is_public=True)
|
|
results = yield defer.gatherResults(
|
|
[
|
|
self.store.get_users_in_room(room["room_id"])
|
|
for room in chunk
|
|
],
|
|
consumeErrors=True,
|
|
).addErrback(unwrapFirstError)
|
|
|
|
for i, room in enumerate(chunk):
|
|
room["num_joined_members"] = len(results[i])
|
|
|
|
# FIXME (erikj): START is no longer a valid value
|
|
defer.returnValue({"start": "START", "end": "END", "chunk": chunk})
|
|
|
|
|
|
class RoomContextHandler(BaseHandler):
|
|
@defer.inlineCallbacks
|
|
def get_event_context(self, user, room_id, event_id, limit):
|
|
"""Retrieves events, pagination tokens and state around a given event
|
|
in a room.
|
|
|
|
Args:
|
|
user (UserID)
|
|
room_id (str)
|
|
event_id (str)
|
|
limit (int): The maximum number of events to return in total
|
|
(excluding state).
|
|
|
|
Returns:
|
|
dict
|
|
"""
|
|
before_limit = math.floor(limit/2.)
|
|
after_limit = limit - before_limit
|
|
|
|
now_token = yield self.hs.get_event_sources().get_current_token()
|
|
|
|
results = yield self.store.get_events_around(
|
|
room_id, event_id, before_limit, after_limit
|
|
)
|
|
|
|
results["events_before"] = yield self._filter_events_for_client(
|
|
user.to_string(), results["events_before"]
|
|
)
|
|
|
|
results["events_after"] = yield self._filter_events_for_client(
|
|
user.to_string(), results["events_after"]
|
|
)
|
|
|
|
if results["events_after"]:
|
|
last_event_id = results["events_after"][-1].event_id
|
|
else:
|
|
last_event_id = event_id
|
|
|
|
state = yield self.store.get_state_for_events(
|
|
[last_event_id], None
|
|
)
|
|
results["state"] = state[last_event_id].values()
|
|
|
|
results["start"] = now_token.copy_and_replace(
|
|
"room_key", results["start"]
|
|
).to_string()
|
|
|
|
results["end"] = now_token.copy_and_replace(
|
|
"room_key", results["end"]
|
|
).to_string()
|
|
|
|
defer.returnValue(results)
|
|
|
|
|
|
class RoomEventSource(object):
|
|
def __init__(self, hs):
|
|
self.store = hs.get_datastore()
|
|
|
|
@defer.inlineCallbacks
|
|
def get_new_events(
|
|
self,
|
|
user,
|
|
from_key,
|
|
limit,
|
|
room_ids,
|
|
is_guest,
|
|
):
|
|
# We just ignore the key for now.
|
|
|
|
to_key = yield self.get_current_key()
|
|
|
|
app_service = yield self.store.get_app_service_by_user_id(
|
|
user.to_string()
|
|
)
|
|
if app_service:
|
|
events, end_key = yield self.store.get_appservice_room_stream(
|
|
service=app_service,
|
|
from_key=from_key,
|
|
to_key=to_key,
|
|
limit=limit,
|
|
)
|
|
else:
|
|
events, end_key = yield self.store.get_room_events_stream(
|
|
user_id=user.to_string(),
|
|
from_key=from_key,
|
|
to_key=to_key,
|
|
limit=limit,
|
|
room_ids=room_ids,
|
|
is_guest=is_guest,
|
|
)
|
|
|
|
defer.returnValue((events, end_key))
|
|
|
|
def get_current_key(self, direction='f'):
|
|
return self.store.get_room_events_max_id(direction)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_pagination_rows(self, user, config, key):
|
|
events, next_key = yield self.store.paginate_room_events(
|
|
room_id=key,
|
|
from_key=config.from_key,
|
|
to_key=config.to_key,
|
|
direction=config.direction,
|
|
limit=config.limit,
|
|
)
|
|
|
|
defer.returnValue((events, next_key))
|