101 lines
2.7 KiB
Python
101 lines
2.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014 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 synapse.api.constants import EventTypes
|
|
from . import EventBase
|
|
|
|
|
|
def prune_event(event):
|
|
""" Returns a pruned version of the given event, which removes all keys we
|
|
don't know about or think could potentially be dodgy.
|
|
|
|
This is used when we "redact" an event. We want to remove all fields that
|
|
the user has specified, but we do want to keep necessary information like
|
|
type, state_key etc.
|
|
"""
|
|
event_type = event.type
|
|
|
|
allowed_keys = [
|
|
"event_id",
|
|
"sender",
|
|
"room_id",
|
|
"hashes",
|
|
"signatures",
|
|
"content",
|
|
"type",
|
|
"state_key",
|
|
"depth",
|
|
"prev_events",
|
|
"prev_state",
|
|
"auth_events",
|
|
"origin",
|
|
"origin_server_ts",
|
|
]
|
|
|
|
new_content = {}
|
|
|
|
def add_fields(*fields):
|
|
for field in fields:
|
|
if field in event.content:
|
|
new_content[field] = event.content[field]
|
|
|
|
if event_type == EventTypes.Member:
|
|
add_fields("membership")
|
|
elif event_type == EventTypes.Create:
|
|
add_fields("creator")
|
|
elif event_type == EventTypes.JoinRules:
|
|
add_fields("join_rule")
|
|
elif event_type == EventTypes.PowerLevels:
|
|
add_fields(
|
|
"users",
|
|
"users_default",
|
|
"events",
|
|
"events_default",
|
|
"events_default",
|
|
"state_default",
|
|
"ban",
|
|
"kick",
|
|
"redact",
|
|
)
|
|
elif event_type == EventTypes.Aliases:
|
|
add_fields("aliases")
|
|
|
|
allowed_fields = {
|
|
k: v
|
|
for k, v in event.get_dict().items()
|
|
if k in allowed_keys
|
|
}
|
|
|
|
allowed_fields["content"] = new_content
|
|
|
|
return type(event)(allowed_fields)
|
|
|
|
|
|
def serialize_event(hs, e):
|
|
# FIXME(erikj): To handle the case of presence events and the like
|
|
if not isinstance(e, EventBase):
|
|
return e
|
|
|
|
# Should this strip out None's?
|
|
d = {k: v for k, v in e.get_dict().items()}
|
|
if "age_ts" in d["unsigned"]:
|
|
now = int(hs.get_clock().time_msec())
|
|
d["unsigned"]["age"] = now - d["unsigned"]["age_ts"]
|
|
del d["unsigned"]["age_ts"]
|
|
|
|
d["user_id"] = d.pop("sender", None)
|
|
|
|
return d
|