searxng/searx/botdetection/http_accept_language.py

28 lines
772 B
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""
Method ``http_accept_language``
-------------------------------
The ``http_accept_language`` method evaluates a request as the request of a bot
if the Accept-Language_ header is unset.
.. _Accept-Language:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent
"""
# pylint: disable=unused-argument
from typing import Optional
import flask
import werkzeug
from searx.tools import config
from ._helpers import too_many_requests
def filter_request(request: flask.Request, cfg: config.Config) -> Optional[werkzeug.Response]:
if request.headers.get('Accept-Language', '').strip() == '':
return too_many_requests(request, "missing HTTP header Accept-Language")
return None