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44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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# pyright: basic
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"""see :ref:`limiter src`"""
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import flask
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from searx import redisdb
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from searx.plugins import logger
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from searx.botdetection import limiter
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from searx.botdetection import dump_request
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name = "Request limiter"
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description = "Limit the number of request"
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default_on = False
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preference_section = 'service'
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logger = logger.getChild('limiter')
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def pre_request():
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"""See :ref:`flask.Flask.before_request`"""
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val = limiter.filter_request(flask.request)
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if val is not None:
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http_status, msg = val
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client_ip = flask.request.headers.get('X-Forwarded-For', '<unknown>')
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logger.error("BLOCK (IP %s): %s" % (client_ip, msg))
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return 'Too Many Requests', http_status
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logger.debug("OK: %s" % dump_request(flask.request))
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return None
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def init(app: flask.Flask, settings) -> bool:
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if not settings['server']['limiter']:
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return False
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if not redisdb.client():
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logger.error("The limiter requires Redis")
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return False
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limiter.init_cfg(logger)
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app.before_request(pre_request)
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return True
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