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authentik/passbook/policies/reputation/signals.py

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2019-10-07 14:33:48 +00:00
"""passbook reputation request signals"""
from django.contrib.auth.signals import user_logged_in, user_login_failed
from django.core.cache import cache
from django.dispatch import receiver
from django.http import HttpRequest
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from structlog import get_logger
from passbook.lib.utils.http import get_client_ip
from passbook.policies.reputation.models import (
CACHE_KEY_IP_PREFIX,
CACHE_KEY_USER_PREFIX,
)
LOGGER = get_logger()
def update_score(request: HttpRequest, username: str, amount: int):
"""Update score for IP and User"""
remote_ip = get_client_ip(request) or "255.255.255.255"
# We only update the cache here, as its faster than writing to the DB
cache.get_or_set(CACHE_KEY_IP_PREFIX + remote_ip, 0)
cache.incr(CACHE_KEY_IP_PREFIX + remote_ip, amount)
cache.get_or_set(CACHE_KEY_USER_PREFIX + username, 0)
cache.incr(CACHE_KEY_USER_PREFIX + username, amount)
LOGGER.debug("Updated score", amount=amount, for_user=username, for_ip=remote_ip)
@receiver(user_login_failed)
# pylint: disable=unused-argument
def handle_failed_login(sender, request, credentials, **_):
"""Lower Score for failed loging attempts"""
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update_score(request, credentials.get("username"), -1)
@receiver(user_logged_in)
# pylint: disable=unused-argument
def handle_successful_login(sender, request, user, **_):
"""Raise score for successful attempts"""
update_score(request, user.username, 1)