forked-synapse/synapse/handlers/message.py

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# -*- coding: utf-8 -*-
# Copyright 2014 OpenMarket Ltd
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#
# 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 synapse.api.constants import Membership
from synapse.api.events.room import RoomTopicEvent
from synapse.api.errors import RoomError
from synapse.streams.config import PaginationConfig
from ._base import BaseHandler
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import logging
logger = logging.getLogger(__name__)
class MessageHandler(BaseHandler):
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def __init__(self, hs):
super(MessageHandler, self).__init__(hs)
self.hs = hs
self.clock = hs.get_clock()
self.event_factory = hs.get_event_factory()
@defer.inlineCallbacks
def get_message(self, msg_id=None, room_id=None, sender_id=None,
user_id=None):
""" Retrieve a message.
Args:
msg_id (str): The message ID to obtain.
room_id (str): The room where the message resides.
sender_id (str): The user ID of the user who sent the message.
user_id (str): The user ID of the user making this request.
Returns:
The message, or None if no message exists.
Raises:
SynapseError if something went wrong.
"""
yield self.auth.check_joined_room(room_id, user_id)
# Pull out the message from the db
# msg = yield self.store.get_message(
# room_id=room_id,
# msg_id=msg_id,
# user_id=sender_id
# )
# TODO (erikj): Once we work out the correct c-s api we need to think on how to do this.
defer.returnValue(None)
@defer.inlineCallbacks
def send_message(self, event=None, suppress_auth=False, stamp_event=True):
""" Send a message.
Args:
event : The message event to store.
suppress_auth (bool) : True to suppress auth for this message. This
is primarily so the home server can inject messages into rooms at
will.
stamp_event (bool) : True to stamp event content with server keys.
Raises:
SynapseError if something went wrong.
"""
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self.ratelimit(event.user_id)
# TODO(paul): Why does 'event' not have a 'user' object?
user = self.hs.parse_userid(event.user_id)
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assert user.is_mine, "User must be our own: %s" % (user,)
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if stamp_event:
event.content["hsob_ts"] = int(self.clock.time_msec())
snapshot = yield self.store.snapshot_room(event.room_id, event.user_id)
if not suppress_auth:
yield self.auth.check(event, snapshot, raises=True)
yield self._on_new_room_event(event, snapshot)
self.hs.get_handlers().presence_handler.bump_presence_active_time(
user
)
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@defer.inlineCallbacks
def get_messages(self, user_id=None, room_id=None, pagin_config=None,
feedback=False):
"""Get messages in a room.
Args:
user_id (str): The user requesting messages.
room_id (str): The room they want messages from.
pagin_config (synapse.api.streams.PaginationConfig): The pagination
config rules to apply, if any.
feedback (bool): True to get compressed feedback with the messages
Returns:
dict: Pagination API results
"""
yield self.auth.check_joined_room(room_id, user_id)
data_source = self.hs.get_event_sources().sources["room"]
if not pagin_config.from_token:
pagin_config.from_token = yield self.hs.get_event_sources().get_current_token()
user = self.hs.parse_userid(user_id)
events, next_token = yield data_source.get_pagination_rows(
user, pagin_config, room_id
)
chunk = {
"chunk": [self.hs.serialize_event(e) for e in events],
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"start": pagin_config.from_token.to_string(),
"end": next_token.to_string(),
}
defer.returnValue(chunk)
@defer.inlineCallbacks
def store_room_data(self, event=None, stamp_event=True):
""" Stores data for a room.
Args:
event : The room path event
stamp_event (bool) : True to stamp event content with server keys.
Raises:
SynapseError if something went wrong.
"""
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snapshot = yield self.store.snapshot_room(
event.room_id,
event.user_id,
state_type=event.type,
state_key=event.state_key,
)
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yield self.auth.check(event, snapshot, raises=True)
if stamp_event:
event.content["hsob_ts"] = int(self.clock.time_msec())
yield self.state_handler.handle_new_event(event, snapshot)
yield self._on_new_room_event(event, snapshot)
@defer.inlineCallbacks
def get_room_data(self, user_id=None, room_id=None,
event_type=None, state_key="",
public_room_rules=[],
private_room_rules=["join"]):
""" Get data from a room.
Args:
event : The room path event
public_room_rules : A list of membership states the user can be in,
in order to read this data IN A PUBLIC ROOM. An empty list means
'any state'.
private_room_rules : A list of membership states the user can be
in, in order to read this data IN A PRIVATE ROOM. An empty list
means 'any state'.
Returns:
The path data content.
Raises:
SynapseError if something went wrong.
"""
if event_type == RoomTopicEvent.TYPE:
# anyone invited/joined can read the topic
private_room_rules = ["invite", "join"]
# does this room exist
room = yield self.store.get_room(room_id)
if not room:
raise RoomError(403, "Room does not exist.")
# does this user exist in this room
member = yield self.store.get_room_member(
room_id=room_id,
user_id="" if not user_id else user_id)
member_state = member.membership if member else None
if room.is_public and public_room_rules:
# make sure the user meets public room rules
if member_state not in public_room_rules:
raise RoomError(403, "Member does not meet public room rules.")
elif not room.is_public and private_room_rules:
# make sure the user meets private room rules
if member_state not in private_room_rules:
raise RoomError(
403, "Member does not meet private room rules.")
data = yield self.store.get_current_state(
room_id, event_type, state_key
)
defer.returnValue(data)
@defer.inlineCallbacks
def get_feedback(self, event_id):
# yield self.auth.check_joined_room(room_id, user_id)
# Pull out the feedback from the db
fb = yield self.store.get_feedback(event_id)
if fb:
defer.returnValue(fb)
defer.returnValue(None)
@defer.inlineCallbacks
def send_feedback(self, event, stamp_event=True):
if stamp_event:
event.content["hsob_ts"] = int(self.clock.time_msec())
snapshot = yield self.store.snapshot_room(event.room_id, event.user_id)
yield self.auth.check(event, snapshot, raises=True)
# store message in db
yield self._on_new_room_event(event, snapshot)
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@defer.inlineCallbacks
def get_state_events(self, user_id, room_id):
"""Retrieve all state events for a given room.
Args:
user_id(str): The user requesting state events.
room_id(str): The room ID to get all state events from.
Returns:
A list of dicts representing state events. [{}, {}, {}]
"""
yield self.auth.check_joined_room(room_id, user_id)
# TODO: This is duplicating logic from snapshot_all_rooms
current_state = yield self.store.get_current_state(room_id)
defer.returnValue([self.hs.serialize_event(c) for c in current_state])
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@defer.inlineCallbacks
def snapshot_all_rooms(self, user_id=None, pagin_config=None,
feedback=False):
"""Retrieve a snapshot of all rooms the user is invited or has joined.
This snapshot may include messages for all rooms where the user is
joined, depending on the pagination config.
Args:
user_id (str): The ID of the user making the request.
pagin_config (synapse.api.streams.PaginationConfig): The pagination
config used to determine how many messages *PER ROOM* to return.
feedback (bool): True to get feedback along with these messages.
Returns:
A list of dicts with "room_id" and "membership" keys for all rooms
the user is currently invited or joined in on. Rooms where the user
is joined on, may return a "messages" key with messages, depending
on the specified PaginationConfig.
"""
room_list = yield self.store.get_rooms_for_user_where_membership_is(
user_id=user_id,
membership_list=[Membership.INVITE, Membership.JOIN]
)
user = self.hs.parse_userid(user_id)
rooms_ret = []
now_token = yield self.hs.get_event_sources().get_current_token()
presence_stream = self.hs.get_event_sources().sources["presence"]
pagination_config = PaginationConfig(from_token=now_token)
presence, _ = yield presence_stream.get_pagination_rows(
user, pagination_config, None
)
public_rooms = yield self.store.get_rooms(is_public=True)
public_room_ids = [r["room_id"] for r in public_rooms]
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limit = pagin_config.limit
if not limit:
limit = 10
for event in room_list:
d = {
"room_id": event.room_id,
"membership": event.membership,
"visibility": ("public" if event.room_id in
public_room_ids else "private"),
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}
if event.membership == Membership.INVITE:
d["inviter"] = event.user_id
rooms_ret.append(d)
if event.membership != Membership.JOIN:
continue
try:
messages, token = yield self.store.get_recent_events_for_room(
event.room_id,
limit=limit,
end_token=now_token.room_key,
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)
start_token = now_token.copy_and_replace("room_key", token[0])
end_token = now_token.copy_and_replace("room_key", token[1])
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d["messages"] = {
"chunk": [self.hs.serialize_event(m) for m in messages],
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"start": start_token.to_string(),
"end": end_token.to_string(),
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}
current_state = yield self.store.get_current_state(
event.room_id
)
d["state"] = [self.hs.serialize_event(c) for c in current_state]
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except:
logger.exception("Failed to get snapshot")
ret = {
"rooms": rooms_ret,
"presence": presence,
"end": now_token.to_string()
}
defer.returnValue(ret)