forked from zaclys/searxng
45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
|
|
# lint: pylint
|
|
""".. _botdetection src:
|
|
|
|
The :ref:`limiter <limiter src>` implements several methods to block bots:
|
|
|
|
a. Analysis of the HTTP header in the request / can be easily bypassed.
|
|
|
|
b. Block and pass lists in which IPs are listed / difficult to maintain, since
|
|
the IPs of bots are not all known and change over the time.
|
|
|
|
c. Detection of bots based on the behavior of the requests and blocking and, if
|
|
necessary, unblocking of the IPs via a dynamically changeable IP block list.
|
|
|
|
For dynamically changeable IP lists a Redis database is needed and for any kind
|
|
of IP list the determination of the IP of the client is essential. The IP of
|
|
the client is determined via the X-Forwarded-For_ HTTP header
|
|
|
|
.. _X-Forwarded-For:
|
|
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For
|
|
|
|
X-Forwarded-For
|
|
===============
|
|
|
|
.. attention::
|
|
|
|
A correct setup of the HTTP request headers ``X-Forwarded-For`` and
|
|
``X-Real-IP`` is essential to be able to assign a request to an IP correctly:
|
|
|
|
- `NGINX RequestHeader`_
|
|
- `Apache RequestHeader`_
|
|
|
|
.. _NGINX RequestHeader:
|
|
https://docs.searxng.org/admin/installation-nginx.html#nginx-s-searxng-site
|
|
.. _Apache RequestHeader:
|
|
https://docs.searxng.org/admin/installation-apache.html#apache-s-searxng-site
|
|
|
|
.. autofunction:: searx.botdetection.get_real_ip
|
|
|
|
"""
|
|
|
|
from ._helpers import dump_request
|
|
from ._helpers import get_real_ip
|
|
from ._helpers import too_many_requests
|