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[mod] botdetection: trusted proxies

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Replaces `x_for` functionality with `trusted_proxies`. This allows defining which IP / ranges to trust extracting the client IP address from X-Forwarded-For and X-Real-IP headers.

We don't know if the proxy chain will give us the proper client address, so we rely on reading the headers of the proxy before SearXNG (if there is one, in that case it must be added to trusted_proxies) hoping it has done the proper checks. In case a proxy in the chain does not check the client address correctly, integrity is compromised and this should be fixed by whoever manages the proxy, not us.

I had to move the get_cnf func to another file (config.py) to prevent cyclic imports since we need to read the list inside _helpers.py

Closes https://github.com/searxng/searxng/issues/4907
Closes https://github.com/searxng/searxng/issues/3632
Closes https://github.com/searxng/searxng/issues/3191
Closes https://github.com/searxng/searxng/issues/1237

Related https://github.com/searxng/searxng-docker/issues/386
Related https://github.com/inetol-infrastructure/searxng-container/issues/81
This commit is contained in:
Ivan Gabaldon 2025-06-12 14:16:09 +02:00
parent 4b9644eb27
commit eb9f20a823
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10 changed files with 147 additions and 102 deletions
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11
searx/botdetection/link_token.py
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@ -38,16 +38,15 @@ from __future__ import annotations
from ipaddress import (
IPv4Network,
IPv6Network,
ip_address,
)
import string
import random
import string
from searx import logger
from searx import valkeydb
from searx.valkeylib import secret_hash
from searx.extended_types import SXNG_Request
from searx.valkeylib import secret_hash
from ._helpers import (
get_network,
@ -98,15 +97,15 @@ def ping(request: SXNG_Request, token: str):
The expire time of this ping-key is :py:obj:`PING_LIVE_TIME`.
"""
from . import valkey_client, cfg # pylint: disable=import-outside-toplevel, cyclic-import
from . import valkey_client # pylint: disable=import-outside-toplevel
if not valkey_client:
return
if not token_is_valid(token):
return
real_ip = ip_address(get_real_ip(request))
network = get_network(real_ip, cfg)
real_ip = get_real_ip(request)
network = get_network(real_ip)
ping_key = get_ping_key(network, request)
logger.debug("store ping_key for (client) network %s (IP %s) -> %s", network.compressed, real_ip, ping_key)