mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-12-30 03:36:12 -05:00
274 lines
9.4 KiB
Python
274 lines
9.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014, 2015 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.
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.api.errors import LimitExceededError, SynapseError, AuthError
|
|
from synapse.crypto.event_signing import add_hashes_and_signatures
|
|
from synapse.api.constants import Membership, EventTypes
|
|
from synapse.types import UserID, RoomAlias
|
|
|
|
from synapse.util.logcontext import PreserveLoggingContext
|
|
from synapse.util import third_party_invites
|
|
|
|
import logging
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class BaseHandler(object):
|
|
|
|
def __init__(self, hs):
|
|
self.store = hs.get_datastore()
|
|
self.auth = hs.get_auth()
|
|
self.notifier = hs.get_notifier()
|
|
self.state_handler = hs.get_state_handler()
|
|
self.distributor = hs.get_distributor()
|
|
self.ratelimiter = hs.get_ratelimiter()
|
|
self.clock = hs.get_clock()
|
|
self.hs = hs
|
|
|
|
self.signing_key = hs.config.signing_key[0]
|
|
self.server_name = hs.hostname
|
|
|
|
self.event_builder_factory = hs.get_event_builder_factory()
|
|
|
|
@defer.inlineCallbacks
|
|
def _filter_events_for_client(self, user_id, events):
|
|
event_id_to_state = yield self.store.get_state_for_events(
|
|
frozenset(e.event_id for e in events),
|
|
types=(
|
|
(EventTypes.RoomHistoryVisibility, ""),
|
|
(EventTypes.Member, user_id),
|
|
)
|
|
)
|
|
|
|
def allowed(event, state):
|
|
if event.type == EventTypes.RoomHistoryVisibility:
|
|
return True
|
|
|
|
membership_ev = state.get((EventTypes.Member, user_id), None)
|
|
if membership_ev:
|
|
membership = membership_ev.membership
|
|
else:
|
|
membership = Membership.LEAVE
|
|
|
|
if membership == Membership.JOIN:
|
|
return True
|
|
|
|
history = state.get((EventTypes.RoomHistoryVisibility, ''), None)
|
|
if history:
|
|
visibility = history.content.get("history_visibility", "shared")
|
|
else:
|
|
visibility = "shared"
|
|
|
|
if visibility == "public":
|
|
return True
|
|
elif visibility == "shared":
|
|
return True
|
|
elif visibility == "joined":
|
|
return membership == Membership.JOIN
|
|
elif visibility == "invited":
|
|
return membership == Membership.INVITE
|
|
|
|
return True
|
|
|
|
defer.returnValue([
|
|
event
|
|
for event in events
|
|
if allowed(event, event_id_to_state[event.event_id])
|
|
])
|
|
|
|
def ratelimit(self, user_id):
|
|
time_now = self.clock.time()
|
|
allowed, time_allowed = self.ratelimiter.send_message(
|
|
user_id, time_now,
|
|
msg_rate_hz=self.hs.config.rc_messages_per_second,
|
|
burst_count=self.hs.config.rc_message_burst_count,
|
|
)
|
|
if not allowed:
|
|
raise LimitExceededError(
|
|
retry_after_ms=int(1000*(time_allowed - time_now)),
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _create_new_client_event(self, builder):
|
|
latest_ret = yield self.store.get_latest_events_in_room(
|
|
builder.room_id,
|
|
)
|
|
|
|
if latest_ret:
|
|
depth = max([d for _, _, d in latest_ret]) + 1
|
|
else:
|
|
depth = 1
|
|
|
|
prev_events = [(e, h) for e, h, _ in latest_ret]
|
|
|
|
builder.prev_events = prev_events
|
|
builder.depth = depth
|
|
|
|
state_handler = self.state_handler
|
|
|
|
context = yield state_handler.compute_event_context(builder)
|
|
|
|
if builder.is_state():
|
|
builder.prev_state = yield self.store.add_event_hashes(
|
|
context.prev_state_events
|
|
)
|
|
|
|
yield self.auth.add_auth_events(builder, context)
|
|
|
|
add_hashes_and_signatures(
|
|
builder, self.server_name, self.signing_key
|
|
)
|
|
|
|
event = builder.build()
|
|
|
|
logger.debug(
|
|
"Created event %s with current state: %s",
|
|
event.event_id, context.current_state,
|
|
)
|
|
|
|
defer.returnValue(
|
|
(event, context,)
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def handle_new_client_event(self, event, context, extra_destinations=[],
|
|
extra_users=[], suppress_auth=False):
|
|
# We now need to go and hit out to wherever we need to hit out to.
|
|
|
|
if not suppress_auth:
|
|
self.auth.check(event, auth_events=context.current_state)
|
|
|
|
if event.type == EventTypes.CanonicalAlias:
|
|
# Check the alias is acually valid (at this time at least)
|
|
room_alias_str = event.content.get("alias", None)
|
|
if room_alias_str:
|
|
room_alias = RoomAlias.from_string(room_alias_str)
|
|
directory_handler = self.hs.get_handlers().directory_handler
|
|
mapping = yield directory_handler.get_association(room_alias)
|
|
|
|
if mapping["room_id"] != event.room_id:
|
|
raise SynapseError(
|
|
400,
|
|
"Room alias %s does not point to the room" % (
|
|
room_alias_str,
|
|
)
|
|
)
|
|
|
|
if (
|
|
event.type == EventTypes.Member and
|
|
event.content["membership"] == Membership.JOIN and
|
|
third_party_invites.join_has_third_party_invite(event.content)
|
|
):
|
|
yield third_party_invites.check_key_valid(
|
|
self.hs.get_simple_http_client(),
|
|
event
|
|
)
|
|
|
|
federation_handler = self.hs.get_handlers().federation_handler
|
|
|
|
if event.type == EventTypes.Member:
|
|
if event.content["membership"] == Membership.INVITE:
|
|
event.unsigned["invite_room_state"] = [
|
|
{
|
|
"type": e.type,
|
|
"state_key": e.state_key,
|
|
"content": e.content,
|
|
"sender": e.sender,
|
|
}
|
|
for k, e in context.current_state.items()
|
|
if e.type in (
|
|
EventTypes.JoinRules,
|
|
EventTypes.CanonicalAlias,
|
|
EventTypes.RoomAvatar,
|
|
EventTypes.Name,
|
|
)
|
|
]
|
|
|
|
invitee = UserID.from_string(event.state_key)
|
|
if not self.hs.is_mine(invitee):
|
|
# TODO: Can we add signature from remote server in a nicer
|
|
# way? If we have been invited by a remote server, we need
|
|
# to get them to sign the event.
|
|
|
|
returned_invite = yield federation_handler.send_invite(
|
|
invitee.domain,
|
|
event,
|
|
)
|
|
|
|
event.unsigned.pop("room_state", None)
|
|
|
|
# TODO: Make sure the signatures actually are correct.
|
|
event.signatures.update(
|
|
returned_invite.signatures
|
|
)
|
|
|
|
if event.type == EventTypes.Redaction:
|
|
if self.auth.check_redaction(event, auth_events=context.current_state):
|
|
original_event = yield self.store.get_event(
|
|
event.redacts,
|
|
check_redacted=False,
|
|
get_prev_content=False,
|
|
allow_rejected=False,
|
|
allow_none=False
|
|
)
|
|
if event.user_id != original_event.user_id:
|
|
raise AuthError(
|
|
403,
|
|
"You don't have permission to redact events"
|
|
)
|
|
|
|
(event_stream_id, max_stream_id) = yield self.store.persist_event(
|
|
event, context=context
|
|
)
|
|
|
|
destinations = set(extra_destinations)
|
|
for k, s in context.current_state.items():
|
|
try:
|
|
if k[0] == EventTypes.Member:
|
|
if s.content["membership"] == Membership.JOIN:
|
|
destinations.add(
|
|
UserID.from_string(s.state_key).domain
|
|
)
|
|
except SynapseError:
|
|
logger.warn(
|
|
"Failed to get destination from event %s", s.event_id
|
|
)
|
|
|
|
with PreserveLoggingContext():
|
|
# Don't block waiting on waking up all the listeners.
|
|
notify_d = self.notifier.on_new_room_event(
|
|
event, event_stream_id, max_stream_id,
|
|
extra_users=extra_users
|
|
)
|
|
|
|
def log_failure(f):
|
|
logger.warn(
|
|
"Failed to notify about %s: %s",
|
|
event.event_id, f.value
|
|
)
|
|
|
|
notify_d.addErrback(log_failure)
|
|
|
|
# If invite, remove room_state from unsigned before sending.
|
|
event.unsigned.pop("invite_room_state", None)
|
|
|
|
federation_handler.handle_new_event(
|
|
event, destinations=destinations,
|
|
)
|