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# -*- coding: utf-8 -*-
#
from django.dispatch import receiver
from django_auth_ldap.backend import populate_user
from django.conf import settings
from django.core.exceptions import PermissionDenied
from django_cas_ng.signals import cas_user_authenticated
from django.db.models.signals import post_save
from jms_oidc_rp.signals import openid_create_or_update_user
from authentication.backends.saml2.signals import saml2_create_or_update_user
from common.utils import get_logger
from .signals import post_user_create
from .models import User, UserPasswordHistory
logger = get_logger(__file__)
def user_authenticated_handle(user, created, source, attrs=None, **kwargs):
if created and settings.ONLY_ALLOW_EXIST_USER_AUTH:
user.delete()
raise PermissionDenied(f'Not allow non-exist user auth: {user.username}')
if created:
user.source = source
user.save()
elif not created and settings.AUTH_SAML2_ALWAYS_UPDATE_USER:
attr_whitelist = ('user', 'username', 'email', 'phone', 'comment')
logger.debug(
"Receive saml2 user updated signal: {}, "
"Update user info: {},"
"(Update only properties in the whitelist. [{}])"
"".format(user, str(attrs), ','.join(attr_whitelist))
)
if attrs is not None:
for key, value in attrs.items():
if key in attr_whitelist and value:
setattr(user, key, value)
user.save()
@receiver(post_save, sender=User)
def save_passwd_change(sender, instance: User, **kwargs):
passwds = UserPasswordHistory.objects.filter(user=instance).order_by('-date_created')\
.values_list('password', flat=True)[:int(settings.OLD_PASSWORD_HISTORY_LIMIT_COUNT)]
for p in passwds:
if instance.password == p:
break
else:
UserPasswordHistory.objects.create(
user=instance, password=instance.password,
date_created=instance.date_password_last_updated
)
@receiver(post_user_create)
def on_user_create(sender, user=None, **kwargs):
logger.debug("Receive user `{}` create signal".format(user.name))
from .utils import send_user_created_mail
logger.info(" - Sending welcome mail ...".format(user.name))
if user.can_send_created_mail():
send_user_created_mail(user)
@receiver(cas_user_authenticated)
def on_cas_user_authenticated(sender, user, created, **kwargs):
source = user.Source.cas.value
user_authenticated_handle(user, created, source)
@receiver(saml2_create_or_update_user)
def on_saml2_create_or_update_user(sender, user, created, attrs, **kwargs):
source = user.Source.saml2.value
user_authenticated_handle(user, created, source, attrs, **kwargs)
@receiver(populate_user)
def on_ldap_create_user(sender, user, ldap_user, **kwargs):
if user and user.username not in ['admin']:
exists = User.objects.filter(username=user.username).exists()
if not exists:
user.source = user.Source.ldap.value
user.save()
@receiver(openid_create_or_update_user)
def on_openid_create_or_update_user(sender, request, user, created, name, username, email, **kwargs):
if created and settings.ONLY_ALLOW_EXIST_USER_AUTH:
user.delete()
raise PermissionDenied(f'Not allow non-exist user auth: {username}')
if created:
logger.debug(
"Receive OpenID user created signal: {}, "
"Set user source is: {}".format(user, User.Source.openid.value)
)
user.source = User.Source.openid.value
user.save()
elif not created and settings.AUTH_OPENID_ALWAYS_UPDATE_USER:
logger.debug(
"Receive OpenID user updated signal: {}, "
"Update user info: {}"
"".format(user, "name: {}|username: {}|email: {}".format(name, username, email))
)
user.name = name
user.username = username
user.email = email
user.save()