searxng/searx/botdetection/http_accept_language.py
Markus Heiser b8c7c2c9aa [mod] botdetection - improve ip_limit and link_token methods
- counting requests in LONG_WINDOW and BURST_WINDOW is not needed when the
  request is validated by the link_token method [1]

- renew a ping-key on validation [2], this is needed for infinite scrolling,
  where no new token (CSS) is loaded. / this does not fix the BURST_MAX issue in
  the vanilla limiter

- normalize the counter names of the ip_limit method to 'ip_limit.*'

- just integrate the ip_limit method straight forward in the limiter plugin /
  non intermediate code --> ip_limit now returns None or a werkzeug.Response
  object that can be passed by the plugin to the flask application / non
  intermediate code that returns a tuple

[1] https://github.com/searxng/searxng/pull/2357#issuecomment-1566113277
[2] https://github.com/searxng/searxng/pull/2357#discussion_r1208542206
[3] https://github.com/searxng/searxng/pull/2357#issuecomment-1566125979

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
2023-06-01 14:38:53 +02:00

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