169 lines
5.5 KiB
Python
169 lines
5.5 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 handlers for federation events."""
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from ._base import BaseHandler
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from synapse.api.events.room import InviteJoinEvent, RoomMemberEvent
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from synapse.api.constants import Membership
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from synapse.util.logutils import log_function
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from twisted.internet import defer
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import logging
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logger = logging.getLogger(__name__)
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class FederationHandler(BaseHandler):
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"""Handles events that originated from federation."""
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@log_function
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@defer.inlineCallbacks
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def on_receive(self, event, is_new_state, backfilled):
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if hasattr(event, "state_key") and not is_new_state:
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logger.debug("Ignoring old state.")
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return
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target_is_mine = False
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if hasattr(event, "target_host"):
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target_is_mine = event.target_host == self.hs.hostname
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if event.type == InviteJoinEvent.TYPE:
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if not target_is_mine:
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logger.debug("Ignoring invite/join event %s", event)
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return
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# If we receive an invite/join event then we need to join the
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# sender to the given room.
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# TODO: We should probably auth this or some such
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content = event.content
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content.update({"membership": Membership.JOIN})
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new_event = self.event_factory.create_event(
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etype=RoomMemberEvent.TYPE,
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target_user_id=event.user_id,
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room_id=event.room_id,
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user_id=event.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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new_event,
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True
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)
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else:
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with (yield self.room_lock.lock(event.room_id)):
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store_id = yield self.store.persist_event(event, backfilled)
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room = yield self.store.get_room(event.room_id)
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if not room:
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# Huh, let's try and get the current state
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try:
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federation = self.hs.get_federation()
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yield federation.get_state_for_room(
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event.origin, event.room_id
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)
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hosts = yield self.store.get_joined_hosts_for_room(
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event.room_id
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)
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if self.hs.hostname in hosts:
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try:
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yield self.store.store_room(
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event.room_id,
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"",
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is_public=False
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)
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except:
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pass
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except:
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logger.exception(
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"Failed to get current state for room %s",
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event.room_id
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)
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if not backfilled:
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yield self.notifier.on_new_room_event(event, store_id)
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@log_function
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@defer.inlineCallbacks
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def backfill(self, dest, room_id, limit):
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events = yield self.hs.get_federation().backfill(dest, room_id, limit)
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for event in events:
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try:
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yield self.store.persist_event(event, backfilled=True)
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except:
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logger.exception("Failed to persist event: %s", event)
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defer.returnValue(events)
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@log_function
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@defer.inlineCallbacks
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def do_invite_join(self, target_host, room_id, joinee, content):
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federation = self.hs.get_federation()
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hosts = yield self.store.get_joined_hosts_for_room(room_id)
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if self.hs.hostname in hosts:
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# We are already in the room.
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logger.debug("We're already in the room apparently")
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defer.returnValue(False)
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# First get current state to see if we are already joined.
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try:
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yield federation.get_state_for_room(target_host, room_id)
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hosts = yield self.store.get_joined_hosts_for_room(room_id)
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if self.hs.hostname in hosts:
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# Oh, we were actually in the room already.
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logger.debug("We're already in the room apparently")
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defer.returnValue(False)
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except Exception:
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logger.exception("Failed to get current state")
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new_event = self.event_factory.create_event(
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etype=InviteJoinEvent.TYPE,
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target_host=target_host,
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room_id=room_id,
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user_id=joinee,
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content=content
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)
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new_event.destinations = [target_host]
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yield federation.handle_new_event(new_event)
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store_id = yield self.store.persist_event(new_event)
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self.notifier.on_new_room_event(new_event, store_id)
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try:
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yield self.store.store_room(
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event.room_id,
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"",
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is_public=False
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)
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except:
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pass
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defer.returnValue(True)
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