74 lines
2.4 KiB
Python
74 lines
2.4 KiB
Python
"""passbook reputation request policy"""
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from typing import Type
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from django.core.cache import cache
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from django.db import models
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from django.forms import ModelForm
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from django.utils.translation import gettext as _
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from rest_framework.serializers import BaseSerializer
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from passbook.core.models import User
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from passbook.lib.utils.http import get_client_ip
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from passbook.policies.models import Policy
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from passbook.policies.types import PolicyRequest, PolicyResult
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CACHE_KEY_IP_PREFIX = "passbook_reputation_ip_"
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CACHE_KEY_USER_PREFIX = "passbook_reputation_user_"
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class ReputationPolicy(Policy):
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"""Return true if request IP/target username's score is below a certain threshold"""
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check_ip = models.BooleanField(default=True)
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check_username = models.BooleanField(default=True)
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threshold = models.IntegerField(default=-5)
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@property
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def serializer(self) -> BaseSerializer:
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from passbook.policies.reputation.api import ReputationPolicySerializer
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return ReputationPolicySerializer
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def form(self) -> Type[ModelForm]:
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from passbook.policies.reputation.forms import ReputationPolicyForm
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return ReputationPolicyForm
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def passes(self, request: PolicyRequest) -> PolicyResult:
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remote_ip = get_client_ip(request.http_request) or "255.255.255.255"
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passing = True
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if self.check_ip:
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score = cache.get_or_set(CACHE_KEY_IP_PREFIX + remote_ip, 0)
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passing = passing and score <= self.threshold
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if self.check_username:
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score = cache.get_or_set(CACHE_KEY_USER_PREFIX + request.user.username, 0)
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passing = passing and score <= self.threshold
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return PolicyResult(passing)
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class Meta:
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verbose_name = _("Reputation Policy")
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verbose_name_plural = _("Reputation Policies")
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class IPReputation(models.Model):
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"""Store score coming from the same IP"""
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ip = models.GenericIPAddressField(unique=True)
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score = models.IntegerField(default=0)
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updated = models.DateTimeField(auto_now=True)
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def __str__(self):
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return f"IPReputation for {self.ip} @ {self.score}"
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class UserReputation(models.Model):
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"""Store score attempting to log in as the same username"""
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user = models.OneToOneField(User, on_delete=models.CASCADE)
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score = models.IntegerField(default=0)
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updated = models.DateTimeField(auto_now=True)
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def __str__(self):
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return f"UserReputation for {self.user} @ {self.score}"
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