111 lines
3.4 KiB
Python
111 lines
3.4 KiB
Python
# -*- 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.
|
|
|
|
from six import string_types
|
|
|
|
from synapse.api.constants import EventTypes, Membership
|
|
from synapse.api.errors import SynapseError
|
|
from synapse.api.room_versions import EventFormatVersions
|
|
from synapse.types import EventID, RoomID, UserID
|
|
|
|
|
|
class EventValidator(object):
|
|
def validate_new(self, event):
|
|
"""Validates the event has roughly the right format
|
|
|
|
Args:
|
|
event (FrozenEvent)
|
|
"""
|
|
self.validate_builder(event)
|
|
|
|
if event.format_version == EventFormatVersions.V1:
|
|
EventID.from_string(event.event_id)
|
|
|
|
required = [
|
|
"auth_events",
|
|
"content",
|
|
"hashes",
|
|
"origin",
|
|
"prev_events",
|
|
"sender",
|
|
"type",
|
|
]
|
|
|
|
for k in required:
|
|
if not hasattr(event, k):
|
|
raise SynapseError(400, "Event does not have key %s" % (k,))
|
|
|
|
# Check that the following keys have string values
|
|
event_strings = [
|
|
"origin",
|
|
]
|
|
|
|
for s in event_strings:
|
|
if not isinstance(getattr(event, s), string_types):
|
|
raise SynapseError(400, "'%s' not a string type" % (s,))
|
|
|
|
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
|
|
fields an event would have
|
|
|
|
Args:
|
|
event (EventBuilder|FrozenEvent)
|
|
"""
|
|
|
|
strings = [
|
|
"room_id",
|
|
"sender",
|
|
"type",
|
|
]
|
|
|
|
if hasattr(event, "state_key"):
|
|
strings.append("state_key")
|
|
|
|
for s in strings:
|
|
if not isinstance(getattr(event, s), string_types):
|
|
raise SynapseError(400, "Not '%s' a string type" % (s,))
|
|
|
|
RoomID.from_string(event.room_id)
|
|
UserID.from_string(event.sender)
|
|
|
|
if event.type == EventTypes.Message:
|
|
strings = [
|
|
"body",
|
|
"msgtype",
|
|
]
|
|
|
|
self._ensure_strings(event.content, strings)
|
|
|
|
elif event.type == EventTypes.Topic:
|
|
self._ensure_strings(event.content, ["topic"])
|
|
|
|
elif event.type == EventTypes.Name:
|
|
self._ensure_strings(event.content, ["name"])
|
|
|
|
elif event.type == EventTypes.Member:
|
|
if "membership" not in event.content:
|
|
raise SynapseError(400, "Content has not membership key")
|
|
|
|
if event.content["membership"] not in Membership.LIST:
|
|
raise SynapseError(400, "Invalid membership key")
|
|
|
|
def _ensure_strings(self, d, keys):
|
|
for s in keys:
|
|
if s not in d:
|
|
raise SynapseError(400, "'%s' not in content" % (s,))
|
|
if not isinstance(d[s], string_types):
|
|
raise SynapseError(400, "'%s' not a string type" % (s,))
|