anonymousland-synapse/synapse/spam_checker_api/__init__.py
David Teller 28199e9357
Uniformize spam-checker API, part 2: check_event_for_spam (#12808)
Signed-off-by: David Teller <davidt@element.io>
2022-05-23 17:27:39 +00:00

50 lines
1.5 KiB
Python

# 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.
# 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 enum import Enum
from typing import Union
from synapse.api.errors import Codes
class RegistrationBehaviour(Enum):
"""
Enum to define whether a registration request should be allowed, denied, or shadow-banned.
"""
ALLOW = "allow"
SHADOW_BAN = "shadow_ban"
DENY = "deny"
# We define the following singleton enum rather than a string to be able to
# write `Union[Allow, ..., str]` in some of the callbacks for the spam-checker
# API, where the `str` is required to maintain backwards compatibility with
# previous versions of the API.
class Allow(Enum):
"""
Singleton to allow events to pass through in SpamChecker APIs.
"""
ALLOW = "allow"
Decision = Union[Allow, Codes]
"""
Union to define whether a request should be allowed or rejected.
To accept a request, return `ALLOW`.
To reject a request without any specific information, use `Codes.FORBIDDEN`.
"""