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# -*- coding: utf-8 -*-
# Copyright 2014 matrix.org
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.internet import defer
from ._base import BaseHandler
from synapse.api.errors import SynapseError, AuthError
import logging
from collections import namedtuple
logger = logging.getLogger(__name__)
# A tiny object useful for storing a user's membership in a room, as a mapping
# key
RoomMember = namedtuple("RoomMember", ("room_id", "user"))
class TypingNotificationHandler(BaseHandler):
def __init__(self, hs):
super(TypingNotificationHandler, self).__init__(hs)
self.homeserver = hs
self.clock = hs.get_clock()
self.federation = hs.get_replication_layer()
self.federation.register_edu_handler("m.typing", self._recv_edu)
self._member_typing_until = {}
@defer.inlineCallbacks
def started_typing(self, target_user, auth_user, room_id, timeout):
if not target_user.is_mine:
raise SynapseError(400, "User is not hosted on this Home Server")
if target_user != auth_user:
raise AuthError(400, "Cannot set another user's typing state")
until = self.clock.time_msec() + timeout
member = RoomMember(room_id=room_id, user=target_user)
was_present = member in self._member_typing_until
self._member_typing_until[member] = until
if was_present:
# No point sending another notification
defer.returnValue(None)
yield self._push_update(
room_id=room_id,
user=target_user,
typing=True,
)
@defer.inlineCallbacks
def stopped_typing(self, target_user, auth_user, room_id):
if not target_user.is_mine:
raise SynapseError(400, "User is not hosted on this Home Server")
if target_user != auth_user:
raise AuthError(400, "Cannot set another user's typing state")
member = RoomMember(room_id=room_id, user=target_user)
if member not in self._member_typing_until:
# No point
defer.returnValue(None)
yield self._push_update(
room_id=room_id,
user=target_user,
typing=False,
)
@defer.inlineCallbacks
def _push_update(self, room_id, user, typing):
localusers = set()
remotedomains = set()
rm_handler = self.homeserver.get_handlers().room_member_handler
yield rm_handler.fetch_room_distributions_into(room_id,
localusers=localusers, remotedomains=remotedomains,
ignore_user=user)
for u in localusers:
self.push_update_to_clients(
room_id=room_id,
observer_user=u,
observed_user=user,
typing=typing,
)
deferreds = []
for domain in remotedomains:
deferreds.append(self.federation.send_edu(
destination=domain,
edu_type="m.typing",
content={
"room_id": room_id,
"user_id": user.to_string(),
"typing": typing,
},
))
yield defer.DeferredList(deferreds, consumeErrors=False)
@defer.inlineCallbacks
def _recv_edu(self, origin, content):
room_id = content["room_id"]
user = self.homeserver.parse_userid(content["user_id"])
localusers = set()
rm_handler = self.homeserver.get_handlers().room_member_handler
yield rm_handler.fetch_room_distributions_into(room_id,
localusers=localusers)
for u in localusers:
self.push_update_to_clients(
room_id=room_id,
observer_user=u,
observed_user=user,
typing=content["typing"]
)
def push_update_to_clients(self, room_id, observer_user, observed_user,
typing):
# TODO(paul) steal this from presence.py
pass
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