123 lines
4.4 KiB
Python
123 lines
4.4 KiB
Python
"""passbook audit models"""
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from datetime import timedelta
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from json import dumps, loads
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from logging import getLogger
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from django.conf import settings
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from django.contrib.auth.models import AnonymousUser
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from django.core.exceptions import ValidationError
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from django.db import models
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from django.utils import timezone
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from django.utils.translation import gettext as _
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from ipware import get_client_ip
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from reversion import register
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from passbook.lib.models import CreatedUpdatedModel, UUIDModel
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LOGGER = getLogger(__name__)
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@register()
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class AuditEntry(UUIDModel):
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"""An individual audit log entry"""
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ACTION_LOGIN = 'login'
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ACTION_LOGIN_FAILED = 'login_failed'
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ACTION_LOGOUT = 'logout'
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ACTION_AUTHORIZE_APPLICATION = 'authorize_application'
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ACTION_SUSPICIOUS_REQUEST = 'suspicious_request'
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ACTION_SIGN_UP = 'sign_up'
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ACTION_PASSWORD_RESET = 'password_reset' # noqa
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ACTION_INVITE_CREATED = 'invitation_created'
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ACTION_INVITE_USED = 'invitation_used'
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ACTIONS = (
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(ACTION_LOGIN, ACTION_LOGIN),
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(ACTION_LOGIN_FAILED, ACTION_LOGIN_FAILED),
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(ACTION_LOGOUT, ACTION_LOGOUT),
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(ACTION_AUTHORIZE_APPLICATION, ACTION_AUTHORIZE_APPLICATION),
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(ACTION_SUSPICIOUS_REQUEST, ACTION_SUSPICIOUS_REQUEST),
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(ACTION_SIGN_UP, ACTION_SIGN_UP),
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(ACTION_PASSWORD_RESET, ACTION_PASSWORD_RESET),
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(ACTION_INVITE_CREATED, ACTION_INVITE_CREATED),
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(ACTION_INVITE_USED, ACTION_INVITE_USED),
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)
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user = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, on_delete=models.SET_NULL)
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action = models.TextField(choices=ACTIONS)
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date = models.DateTimeField(auto_now_add=True)
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app = models.TextField()
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_context = models.TextField()
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_context_cache = None
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request_ip = models.GenericIPAddressField()
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created = models.DateTimeField(auto_now_add=True)
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@property
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def context(self):
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"""Load context data and load json"""
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if not self._context_cache:
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self._context_cache = loads(self._context)
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return self._context_cache
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@staticmethod
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def create(action, request, **kwargs):
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"""Create AuditEntry from arguments"""
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client_ip, _ = get_client_ip(request)
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user = request.user
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if isinstance(user, AnonymousUser):
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user = kwargs.get('user', None)
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entry = AuditEntry.objects.create(
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action=action,
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user=user,
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# User 255.255.255.255 as fallback if IP cannot be determined
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request_ip=client_ip or '255.255.255.255',
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_context=dumps(kwargs))
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LOGGER.debug("Logged %s from %s (%s)", action, request.user, client_ip)
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return entry
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def save(self, *args, **kwargs):
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if not self._state.adding:
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raise ValidationError("you may not edit an existing %s" % self._meta.model_name)
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super().save(*args, **kwargs)
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class Meta:
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verbose_name = _('Audit Entry')
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verbose_name_plural = _('Audit Entries')
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class LoginAttempt(CreatedUpdatedModel):
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"""Track failed login-attempts"""
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target_uid = models.CharField(max_length=254)
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request_ip = models.GenericIPAddressField()
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attempts = models.IntegerField(default=1)
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@staticmethod
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def attempt(target_uid, request):
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"""Helper function to create attempt or count up existing one"""
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client_ip, _ = get_client_ip(request)
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# Since we can only use 254 chars for target_uid, truncate target_uid.
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target_uid = target_uid[:254]
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time_threshold = timezone.now() - timedelta(minutes=10)
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existing_attempts = LoginAttempt.objects.filter(
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target_uid=target_uid,
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request_ip=client_ip,
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last_updated__gt=time_threshold).order_by('created')
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if existing_attempts.exists():
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attempt = existing_attempts.first()
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attempt.attempts += 1
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attempt.save()
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LOGGER.debug("Increased attempts on %s", attempt)
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else:
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attempt = LoginAttempt.objects.create(
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target_uid=target_uid,
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request_ip=client_ip)
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LOGGER.debug("Created new attempt %s", attempt)
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def __str__(self):
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return "LoginAttempt to %s from %s (x%d)" % (self.target_uid,
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self.request_ip, self.attempts)
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class Meta:
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unique_together = (('target_uid', 'request_ip', 'created'),)
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