From 1473058b5eb14b5128c0b6ee6e88e89602ad96c5 Mon Sep 17 00:00:00 2001 From: Brendan Abolivier Date: Wed, 8 May 2019 17:01:30 +0100 Subject: Do checks on aliases for incoming m.room.aliases events (#5128) Follow-up to #5124 Also added a bunch of checks to make sure everything (both the stuff added on #5124 and this PR) works as intended. --- synapse/events/validator.py | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'synapse/events/validator.py') diff --git a/synapse/events/validator.py b/synapse/events/validator.py index 514273c792..711af512b2 100644 --- a/synapse/events/validator.py +++ b/synapse/events/validator.py @@ -15,8 +15,8 @@ from six import string_types -from synapse.api.constants import EventTypes, Membership -from synapse.api.errors import SynapseError +from synapse.api.constants import MAX_ALIAS_LENGTH, EventTypes, Membership +from synapse.api.errors import Codes, SynapseError from synapse.api.room_versions import EventFormatVersions from synapse.types import EventID, RoomID, UserID @@ -56,6 +56,17 @@ class EventValidator(object): if not isinstance(getattr(event, s), string_types): raise SynapseError(400, "'%s' not a string type" % (s,)) + if event.type == EventTypes.Aliases: + if "aliases" in event.content: + for alias in event.content["aliases"]: + if len(alias) > MAX_ALIAS_LENGTH: + raise SynapseError( + 400, + ("Can't create aliases longer than" + " %d characters" % (MAX_ALIAS_LENGTH,)), + Codes.INVALID_PARAM, + ) + def validate_builder(self, event): """Validates that the builder/event has roughly the right format. Only checks values that we expect a proto event to have, rather than all the -- cgit 1.5.1