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forked-synapse/synapse/handlers/room.py
Daniel Wagner-Hall 2ef6de928d Skip, rather than erroring, invalid guest requests 
Erroring causes problems when people make illegal requests, because they
don't know what limit parameter they should pass.

This is definitely buggy. It leaks message counts for rooms people don't
have permission to see, via tokens. But apparently we already
consciously decided to allow that as a team, so this preserves that
behaviour.
2016-01-05 18:12:37 +00:00

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# -*- coding: utf-8 -*-
# Copyright 2014 - 2016 OpenMarket Ltd
#
# 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.
"""Contains functions for performing events on rooms."""
from twisted.internet import defer
from ._base import BaseHandler
from synapse.types import UserID, RoomAlias, RoomID
from synapse.api.constants import (
EventTypes, Membership, JoinRules, RoomCreationPreset,
)
from synapse.api.errors import AuthError, StoreError, SynapseError
from synapse.util import stringutils, unwrapFirstError
from synapse.util.async import run_on_reactor
from signedjson.sign import verify_signed_json
from signedjson.key import decode_verify_key_bytes
from collections import OrderedDict
from unpaddedbase64 import decode_base64
import logging
import math
import string
logger = logging.getLogger(__name__)
id_server_scheme = "https://"
def collect_presencelike_data(distributor, user, content):
return distributor.fire("collect_presencelike_data", user, content)
def user_left_room(distributor, user, room_id):
return distributor.fire("user_left_room", user=user, room_id=room_id)
def user_joined_room(distributor, user, room_id):
return distributor.fire("user_joined_room", user=user, room_id=room_id)
class RoomCreationHandler(BaseHandler):
PRESETS_DICT = {
RoomCreationPreset.PRIVATE_CHAT: {
"join_rules": JoinRules.INVITE,
"history_visibility": "shared",
"original_invitees_have_ops": False,
},
RoomCreationPreset.TRUSTED_PRIVATE_CHAT: {
"join_rules": JoinRules.INVITE,
"history_visibility": "shared",
"original_invitees_have_ops": True,
},
RoomCreationPreset.PUBLIC_CHAT: {
"join_rules": JoinRules.PUBLIC,
"history_visibility": "shared",
"original_invitees_have_ops": False,
},
}
@defer.inlineCallbacks
def create_room(self, user_id, room_id, config):
""" Creates a new room.
Args:
user_id (str): The ID of the user creating the new room.
room_id (str): The proposed ID for the new room. Can be None, in
which case one will be created for you.
config (dict) : A dict of configuration options.
Returns:
The new room ID.
Raises:
SynapseError if the room ID was taken, couldn't be stored, or
something went horribly wrong.
"""
self.ratelimit(user_id)
if "room_alias_name" in config:
for wchar in string.whitespace:
if wchar in config["room_alias_name"]:
raise SynapseError(400, "Invalid characters in room alias")
room_alias = RoomAlias.create(
config["room_alias_name"],
self.hs.hostname,
)
mapping = yield self.store.get_association_from_room_alias(
room_alias
)
if mapping:
raise SynapseError(400, "Room alias already taken")
else:
room_alias = None
invite_list = config.get("invite", [])
for i in invite_list:
try:
UserID.from_string(i)
except:
raise SynapseError(400, "Invalid user_id: %s" % (i,))
invite_3pid_list = config.get("invite_3pid", [])
is_public = config.get("visibility", None) == "public"
if room_id:
# Ensure room_id is the correct type
room_id_obj = RoomID.from_string(room_id)
if not self.hs.is_mine(room_id_obj):
raise SynapseError(400, "Room id must be local")
yield self.store.store_room(
room_id=room_id,
room_creator_user_id=user_id,
is_public=is_public
)
else:
# autogen room IDs and try to create it. We may clash, so just
# try a few times till one goes through, giving up eventually.
attempts = 0
room_id = None
while attempts < 5:
try:
random_string = stringutils.random_string(18)
gen_room_id = RoomID.create(
random_string,
self.hs.hostname,
)
yield self.store.store_room(
room_id=gen_room_id.to_string(),
room_creator_user_id=user_id,
is_public=is_public
)
room_id = gen_room_id.to_string()
break
except StoreError:
attempts += 1
if not room_id:
raise StoreError(500, "Couldn't generate a room ID.")
if room_alias:
directory_handler = self.hs.get_handlers().directory_handler
yield directory_handler.create_association(
user_id=user_id,
room_id=room_id,
room_alias=room_alias,
servers=[self.hs.hostname],
)
preset_config = config.get(
"preset",
RoomCreationPreset.PUBLIC_CHAT
if is_public
else RoomCreationPreset.PRIVATE_CHAT
)
raw_initial_state = config.get("initial_state", [])
initial_state = OrderedDict()
for val in raw_initial_state:
initial_state[(val["type"], val.get("state_key", ""))] = val["content"]
creation_content = config.get("creation_content", {})
user = UserID.from_string(user_id)
creation_events = self._create_events_for_new_room(
user, room_id,
preset_config=preset_config,
invite_list=invite_list,
initial_state=initial_state,
creation_content=creation_content,
room_alias=room_alias,
)
msg_handler = self.hs.get_handlers().message_handler
for event in creation_events:
yield msg_handler.create_and_send_event(event, ratelimit=False)
if "name" in config:
name = config["name"]
yield msg_handler.create_and_send_event({
"type": EventTypes.Name,
"room_id": room_id,
"sender": user_id,
"state_key": "",
"content": {"name": name},
}, ratelimit=False)
if "topic" in config:
topic = config["topic"]
yield msg_handler.create_and_send_event({
"type": EventTypes.Topic,
"room_id": room_id,
"sender": user_id,
"state_key": "",
"content": {"topic": topic},
}, ratelimit=False)
for invitee in invite_list:
yield msg_handler.create_and_send_event({
"type": EventTypes.Member,
"state_key": invitee,
"room_id": room_id,
"sender": user_id,
"content": {"membership": Membership.INVITE},
}, ratelimit=False)
for invite_3pid in invite_3pid_list:
id_server = invite_3pid["id_server"]
address = invite_3pid["address"]
medium = invite_3pid["medium"]
yield self.hs.get_handlers().room_member_handler.do_3pid_invite(
room_id,
user,
medium,
address,
id_server,
token_id=None,
txn_id=None,
)
result = {"room_id": room_id}
if room_alias:
result["room_alias"] = room_alias.to_string()
yield directory_handler.send_room_alias_update_event(
user_id, room_id
)
defer.returnValue(result)
def _create_events_for_new_room(self, creator, room_id, preset_config,
invite_list, initial_state, creation_content,
room_alias):
config = RoomCreationHandler.PRESETS_DICT[preset_config]
creator_id = creator.to_string()
event_keys = {
"room_id": room_id,
"sender": creator_id,
"state_key": "",
}
def create(etype, content, **kwargs):
e = {
"type": etype,
"content": content,
}
e.update(event_keys)
e.update(kwargs)
return e
creation_content.update({"creator": creator.to_string()})
creation_event = create(
etype=EventTypes.Create,
content=creation_content,
)
join_event = create(
etype=EventTypes.Member,
state_key=creator_id,
content={
"membership": Membership.JOIN,
},
)
returned_events = [creation_event, join_event]
if (EventTypes.PowerLevels, '') not in initial_state:
power_level_content = {
"users": {
creator.to_string(): 100,
},
"users_default": 0,
"events": {
EventTypes.Name: 50,
EventTypes.PowerLevels: 100,
EventTypes.RoomHistoryVisibility: 100,
EventTypes.CanonicalAlias: 50,
EventTypes.RoomAvatar: 50,
},
"events_default": 0,
"state_default": 50,
"ban": 50,
"kick": 50,
"redact": 50,
"invite": 0,
}
if config["original_invitees_have_ops"]:
for invitee in invite_list:
power_level_content["users"][invitee] = 100
power_levels_event = create(
etype=EventTypes.PowerLevels,
content=power_level_content,
)
returned_events.append(power_levels_event)
if room_alias and (EventTypes.CanonicalAlias, '') not in initial_state:
room_alias_event = create(
etype=EventTypes.CanonicalAlias,
content={"alias": room_alias.to_string()},
)
returned_events.append(room_alias_event)
if (EventTypes.JoinRules, '') not in initial_state:
join_rules_event = create(
etype=EventTypes.JoinRules,
content={"join_rule": config["join_rules"]},
)
returned_events.append(join_rules_event)
if (EventTypes.RoomHistoryVisibility, '') not in initial_state:
history_event = create(
etype=EventTypes.RoomHistoryVisibility,
content={"history_visibility": config["history_visibility"]}
)
returned_events.append(history_event)
for (etype, state_key), content in initial_state.items():
returned_events.append(create(
etype=etype,
state_key=state_key,
content=content,
))
return returned_events
class RoomMemberHandler(BaseHandler):
# TODO(paul): This handler currently contains a messy conflation of
# low-level API that works on UserID objects and so on, and REST-level
# API that takes ID strings and returns pagination chunks. These concerns
# ought to be separated out a lot better.
def __init__(self, hs):
super(RoomMemberHandler, self).__init__(hs)
self.clock = hs.get_clock()
self.distributor = hs.get_distributor()
self.distributor.declare("user_joined_room")
self.distributor.declare("user_left_room")
@defer.inlineCallbacks
def get_room_members(self, room_id):
users = yield self.store.get_users_in_room(room_id)
defer.returnValue([UserID.from_string(u) for u in users])
@defer.inlineCallbacks
def fetch_room_distributions_into(self, room_id, localusers=None,
remotedomains=None, ignore_user=None):
"""Fetch the distribution of a room, adding elements to either
'localusers' or 'remotedomains', which should be a set() if supplied.
If ignore_user is set, ignore that user.
This function returns nothing; its result is performed by the
side-effect on the two passed sets. This allows easy accumulation of
member lists of multiple rooms at once if required.
"""
members = yield self.get_room_members(room_id)
for member in members:
if ignore_user is not None and member == ignore_user:
continue
if self.hs.is_mine(member):
if localusers is not None:
localusers.add(member)
else:
if remotedomains is not None:
remotedomains.add(member.domain)
@defer.inlineCallbacks
def change_membership(self, event, context, do_auth=True, is_guest=False):
""" Change the membership status of a user in a room.
Args:
event (SynapseEvent): The membership event
Raises:
SynapseError if there was a problem changing the membership.
"""
target_user_id = event.state_key
prev_state = context.current_state.get(
(EventTypes.Member, target_user_id),
None
)
room_id = event.room_id
# If we're trying to join a room then we have to do this differently
# if this HS is not currently in the room, i.e. we have to do the
# invite/join dance.
if event.membership == Membership.JOIN:
if is_guest:
guest_access = context.current_state.get(
(EventTypes.GuestAccess, ""),
None
)
is_guest_access_allowed = (
guest_access
and guest_access.content
and "guest_access" in guest_access.content
and guest_access.content["guest_access"] == "can_join"
)
if not is_guest_access_allowed:
raise AuthError(403, "Guest access not allowed")
yield self._do_join(event, context, do_auth=do_auth)
else:
if event.membership == Membership.LEAVE:
is_host_in_room = yield self.is_host_in_room(room_id, context)
if not is_host_in_room:
# Rejecting an invite, rather than leaving a joined room
handler = self.hs.get_handlers().federation_handler
inviter = yield self.get_inviter(event)
if not inviter:
# return the same error as join_room_alias does
raise SynapseError(404, "No known servers")
yield handler.do_remotely_reject_invite(
[inviter.domain],
room_id,
event.user_id
)
defer.returnValue({"room_id": room_id})
return
# FIXME: This isn't idempotency.
if prev_state and prev_state.membership == event.membership:
# double same action, treat this event as a NOOP.
defer.returnValue({})
return
yield self._do_local_membership_update(
event,
membership=event.content["membership"],
context=context,
do_auth=do_auth,
)
if prev_state and prev_state.membership == Membership.JOIN:
user = UserID.from_string(event.user_id)
user_left_room(self.distributor, user, event.room_id)
defer.returnValue({"room_id": room_id})
@defer.inlineCallbacks
def join_room_alias(self, joinee, room_alias, 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")
# If event doesn't include a display name, add one.
yield collect_presencelike_data(self.distributor, joinee, content)
content.update({"membership": Membership.JOIN})
builder = self.event_builder_factory.new({
"type": EventTypes.Member,
"state_key": joinee.to_string(),
"room_id": room_id,
"sender": joinee.to_string(),
"membership": Membership.JOIN,
"content": content,
})
event, context = yield self._create_new_client_event(builder)
yield self._do_join(event, context, room_hosts=hosts, do_auth=True)
defer.returnValue({"room_id": room_id})
@defer.inlineCallbacks
def _do_join(self, event, context, room_hosts=None, do_auth=True):
room_id = event.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.
is_host_in_room = yield self.is_host_in_room(room_id, context)
if is_host_in_room:
should_do_dance = False
elif room_hosts: # TODO: Shouldn't this be remote_room_host?
should_do_dance = True
else:
inviter = yield self.get_inviter(event)
if not inviter:
# return the same error as join_room_alias does
raise SynapseError(404, "No known servers")
should_do_dance = not self.hs.is_mine(inviter)
room_hosts = [inviter.domain]
if should_do_dance:
handler = self.hs.get_handlers().federation_handler
yield handler.do_invite_join(
room_hosts,
room_id,
event.user_id,
event.content,
)
else:
logger.debug("Doing normal join")
yield self._do_local_membership_update(
event,
membership=event.content["membership"],
context=context,
do_auth=do_auth,
)
prev_state = context.current_state.get((event.type, event.state_key))
if not prev_state or prev_state.membership != Membership.JOIN:
# Only fire user_joined_room if the user has acutally joined the
# room. Don't bother if the user is just changing their profile
# info.
user = UserID.from_string(event.user_id)
yield user_joined_room(self.distributor, user, room_id)
@defer.inlineCallbacks
def get_inviter(self, event):
# TODO(markjh): get prev_state from snapshot
prev_state = yield self.store.get_room_member(
event.user_id, event.room_id
)
if prev_state and prev_state.membership == Membership.INVITE:
defer.returnValue(UserID.from_string(prev_state.user_id))
return
elif "third_party_invite" in event.content:
if "sender" in event.content["third_party_invite"]:
inviter = UserID.from_string(
event.content["third_party_invite"]["sender"]
)
defer.returnValue(inviter)
defer.returnValue(None)
@defer.inlineCallbacks
def is_host_in_room(self, room_id, context):
is_host_in_room = yield self.auth.check_host_in_room(
room_id,
self.hs.hostname
)
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,
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,
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(
"%s%s/_matrix/identity/api/v1/lookup" % (id_server_scheme, 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(
"%s%s/_matrix/identity/api/v1/pubkey/%s" %
(id_server_scheme, 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,
medium,
address,
room_id,
user,
token_id,
txn_id
):
room_state = yield self.hs.get_state_handler().get_current_state(room_id)
inviter_display_name = ""
inviter_avatar_url = ""
member_event = room_state.get((EventTypes.Member, user.to_string()))
if member_event:
inviter_display_name = member_event.content.get("displayname", "")
inviter_avatar_url = member_event.content.get("avatar_url", "")
canonical_room_alias = ""
canonical_alias_event = room_state.get((EventTypes.CanonicalAlias, ""))
if canonical_alias_event:
canonical_room_alias = canonical_alias_event.content.get("alias", "")
room_name = ""
room_name_event = room_state.get((EventTypes.Name, ""))
if room_name_event:
room_name = room_name_event.content.get("name", "")
room_join_rules = ""
join_rules_event = room_state.get((EventTypes.JoinRules, ""))
if join_rules_event:
room_join_rules = join_rules_event.content.get("join_rule", "")
room_avatar_url = ""
room_avatar_event = room_state.get((EventTypes.RoomAvatar, ""))
if room_avatar_event:
room_avatar_url = room_avatar_event.content.get("url", "")
token, public_key, key_validity_url, display_name = (
yield self._ask_id_server_for_third_party_invite(
id_server=id_server,
medium=medium,
address=address,
room_id=room_id,
inviter_user_id=user.to_string(),
room_alias=canonical_room_alias,
room_avatar_url=room_avatar_url,
room_join_rules=room_join_rules,
room_name=room_name,
inviter_display_name=inviter_display_name,
inviter_avatar_url=inviter_avatar_url
)
)
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,
inviter_user_id,
room_alias,
room_avatar_url,
room_join_rules,
room_name,
inviter_display_name,
inviter_avatar_url
):
is_url = "%s%s/_matrix/identity/api/v1/store-invite" % (
id_server_scheme, id_server,
)
data = yield self.hs.get_simple_http_client().post_urlencoded_get_json(
is_url,
{
"medium": medium,
"address": address,
"room_id": room_id,
"room_alias": room_alias,
"room_avatar_url": room_avatar_url,
"room_join_rules": room_join_rules,
"room_name": room_name,
"sender": inviter_user_id,
"sender_display_name": inviter_display_name,
"sender_avatar_url": inviter_avatar_url,
}
)
# TODO: Check for success
token = data["token"]
public_key = data["public_key"]
display_name = data["display_name"]
key_validity_url = "%s%s/_matrix/identity/api/v1/pubkey/isvalid" % (
id_server_scheme, id_server,
)
defer.returnValue((token, public_key, key_validity_url, display_name))
def forget(self, user, room_id):
return self.store.forget(user.to_string(), room_id)
class RoomListHandler(BaseHandler):
@defer.inlineCallbacks
def get_public_room_list(self):
chunk = yield self.store.get_rooms(is_public=True)
room_members = yield defer.gatherResults(
[
self.store.get_users_in_room(room["room_id"])
for room in chunk
],
consumeErrors=True,
).addErrback(unwrapFirstError)
avatar_urls = yield defer.gatherResults(
[
self.get_room_avatar_url(room["room_id"])
for room in chunk
],
consumeErrors=True,
).addErrback(unwrapFirstError)
for i, room in enumerate(chunk):
room["num_joined_members"] = len(room_members[i])
if avatar_urls[i]:
room["avatar_url"] = avatar_urls[i]
# FIXME (erikj): START is no longer a valid value
defer.returnValue({"start": "START", "end": "END", "chunk": chunk})
@defer.inlineCallbacks
def get_room_avatar_url(self, room_id):
event = yield self.hs.get_state_handler().get_current_state(
room_id, "m.room.avatar"
)
if event and "url" in event.content:
defer.returnValue(event.content["url"])
class RoomContextHandler(BaseHandler):
@defer.inlineCallbacks
def get_event_context(self, user, room_id, event_id, limit, is_guest):
"""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"],
is_guest=is_guest,
)
results["events_after"] = yield self._filter_events_for_client(
user.to_string(),
results["events_after"],
is_guest=is_guest,
)
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))
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