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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
import logging
from typing import Any, Dict, List, Tuple
from synapse.config import ConfigError
from synapse.types import JsonDict
from synapse.util.module_loader import load_module
from ._base import Config
logger = logging.getLogger(__name__)
LEGACY_SPAM_CHECKER_WARNING = """
This server is using a spam checker module that is implementing the deprecated spam
checker interface. Please check with the module's maintainer to see if a new version
supporting Synapse's generic modules system is available. For more information, please
see https://element-hq.github.io/synapse/latest/modules/index.html
---------------------------------------------------------------------------------------"""
class SpamCheckerConfig(Config):
section = "spamchecker"
def read_config(self, config: JsonDict, **kwargs: Any) -> None:
self.spam_checkers: List[Tuple[Any, Dict]] = []
spam_checkers = config.get("spam_checker") or []
if isinstance(spam_checkers, dict):
# The spam_checker config option used to only support one
# spam checker, and thus was simply a dictionary with module
# and config keys. Support this old behaviour by checking
# to see if the option resolves to a dictionary
self.spam_checkers.append(load_module(spam_checkers, ("spam_checker",)))
elif isinstance(spam_checkers, list):
for i, spam_checker in enumerate(spam_checkers):
config_path = ("spam_checker", "<item %i>" % i)
if not isinstance(spam_checker, dict):
raise ConfigError("expected a mapping", config_path)
self.spam_checkers.append(load_module(spam_checker, config_path))
else:
raise ConfigError("spam_checker syntax is incorrect")
# If this configuration is being used in any way, warn the admin that it is going
# away soon.
if self.spam_checkers:
logger.warning(LEGACY_SPAM_CHECKER_WARNING)
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