diff options
Diffstat (limited to 'synapse/handlers/message.py')
| -rw-r--r-- | synapse/handlers/message.py | 70 |
1 files changed, 64 insertions, 6 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 224d34ef3a..11650dc80c 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -1,6 +1,7 @@ # -*- coding: utf-8 -*- -# Copyright 2014 - 2016 OpenMarket Ltd -# Copyright 2017 - 2018 New Vector Ltd +# Copyright 2014-2016 OpenMarket Ltd +# Copyright 2017-2018 New Vector Ltd +# Copyright 2019 The Matrix.org Foundation C.I.C. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -22,7 +23,7 @@ from canonicaljson import encode_canonical_json, json from twisted.internet import defer from twisted.internet.defer import succeed -from synapse.api.constants import EventTypes, Membership +from synapse.api.constants import EventTypes, Membership, RelationTypes from synapse.api.errors import ( AuthError, Codes, @@ -32,7 +33,6 @@ from synapse.api.errors import ( ) from synapse.api.room_versions import RoomVersions from synapse.api.urls import ConsentURIBuilder -from synapse.events.utils import serialize_event from synapse.events.validator import EventValidator from synapse.replication.http.send_event import ReplicationSendEventRestServlet from synapse.storage.state import StateFilter @@ -57,6 +57,7 @@ class MessageHandler(object): self.clock = hs.get_clock() self.state = hs.get_state_handler() self.store = hs.get_datastore() + self._event_serializer = hs.get_event_client_serializer() @defer.inlineCallbacks def get_room_data(self, user_id=None, room_id=None, @@ -164,9 +165,13 @@ class MessageHandler(object): room_state = room_state[membership_event_id] now = self.clock.time_msec() - defer.returnValue( - [serialize_event(c, now) for c in room_state.values()] + events = yield self._event_serializer.serialize_events( + room_state.values(), now, + # We don't bother bundling aggregations in when asked for state + # events, as clients won't use them. + bundle_aggregations=False, ) + defer.returnValue(events) @defer.inlineCallbacks def get_joined_members(self, requester, room_id): @@ -228,6 +233,7 @@ class EventCreationHandler(object): self.ratelimiter = hs.get_ratelimiter() self.notifier = hs.get_notifier() self.config = hs.config + self.require_membership_for_aliases = hs.config.require_membership_for_aliases self.send_event_to_master = ReplicationSendEventRestServlet.make_client(hs) @@ -243,6 +249,7 @@ class EventCreationHandler(object): self.action_generator = hs.get_action_generator() self.spam_checker = hs.get_spam_checker() + self.third_party_event_rules = hs.get_third_party_event_rules() self._block_events_without_consent_error = ( self.config.block_events_without_consent_error @@ -336,6 +343,35 @@ class EventCreationHandler(object): prev_events_and_hashes=prev_events_and_hashes, ) + # In an ideal world we wouldn't need the second part of this condition. However, + # this behaviour isn't spec'd yet, meaning we should be able to deactivate this + # behaviour. Another reason is that this code is also evaluated each time a new + # m.room.aliases event is created, which includes hitting a /directory route. + # Therefore not including this condition here would render the similar one in + # synapse.handlers.directory pointless. + if builder.type == EventTypes.Aliases and self.require_membership_for_aliases: + # Ideally we'd do the membership check in event_auth.check(), which + # describes a spec'd algorithm for authenticating events received over + # federation as well as those created locally. As of room v3, aliases events + # can be created by users that are not in the room, therefore we have to + # tolerate them in event_auth.check(). + prev_state_ids = yield context.get_prev_state_ids(self.store) + prev_event_id = prev_state_ids.get((EventTypes.Member, event.sender)) + prev_event = yield self.store.get_event(prev_event_id, allow_none=True) + if not prev_event or prev_event.membership != Membership.JOIN: + logger.warning( + ("Attempt to send `m.room.aliases` in room %s by user %s but" + " membership is %s"), + event.room_id, + event.sender, + prev_event.membership if prev_event else None, + ) + + raise AuthError( + 403, + "You must be in the room to create an alias for it", + ) + self.validator.validate_new(event) defer.returnValue((event, context)) @@ -570,6 +606,20 @@ class EventCreationHandler(object): self.validator.validate_new(event) + # If this event is an annotation then we check that that the sender + # can't annotate the same way twice (e.g. stops users from liking an + # event multiple times). + relation = event.content.get("m.relates_to", {}) + if relation.get("rel_type") == RelationTypes.ANNOTATION: + relates_to = relation["event_id"] + aggregation_key = relation["key"] + + already_exists = yield self.store.has_user_annotated_event( + relates_to, event.type, aggregation_key, event.sender, + ) + if already_exists: + raise SynapseError(400, "Can't send same reaction twice") + logger.debug( "Created event %s", event.event_id, @@ -610,6 +660,14 @@ class EventCreationHandler(object): else: room_version = yield self.store.get_room_version(event.room_id) + event_allowed = yield self.third_party_event_rules.check_event_allowed( + event, context, + ) + if not event_allowed: + raise SynapseError( + 403, "This event is not allowed in this context", Codes.FORBIDDEN, + ) + try: yield self.auth.check_from_context(room_version, event, context) except AuthError as err: |