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# coding:utf-8
#
import ldap
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist
from django_auth_ldap.backend import _LDAPUser, LDAPBackend
from django_auth_ldap.config import _LDAPConfig, LDAPSearch, LDAPSearchUnion
logger = _LDAPConfig.get_logger()
class LDAPAuthorizationBackend(LDAPBackend):
"""
Override this class to override _LDAPUser to LDAPUser
"""
def authenticate(self, request=None, username=None, password=None, **kwargs):
if password or self.settings.PERMIT_EMPTY_PASSWORD:
ldap_user = LDAPUser(self, username=username.strip(), request=request)
user = self.authenticate_ldap_user(ldap_user, password)
else:
logger.debug('Rejecting empty password for {}'.format(username))
user = None
return user
def get_user(self, user_id):
user = None
try:
user = self.get_user_model().objects.get(pk=user_id)
LDAPUser(self, user=user) # This sets user.ldap_user
except ObjectDoesNotExist:
pass
return user
def get_group_permissions(self, user, obj=None):
if not hasattr(user, 'ldap_user') and self.settings.AUTHORIZE_ALL_USERS:
LDAPUser(self, user=user) # This sets user.ldap_user
if hasattr(user, 'ldap_user'):
permissions = user.ldap_user.get_group_permissions()
else:
permissions = set()
return permissions
def populate_user(self, username):
ldap_user = LDAPUser(self, username=username)
user = ldap_user.populate_user()
return user
class LDAPUser(_LDAPUser):
def _search_for_user_dn(self):
"""
This method was overridden because the AUTH_LDAP_USER_SEARCH
configuration in the settings.py file
is configured with a `lambda` problem value
"""
user_search_union = [
LDAPSearch(
USER_SEARCH, ldap.SCOPE_SUBTREE,
settings.AUTH_LDAP_SEARCH_FILTER
)
for USER_SEARCH in str(settings.AUTH_LDAP_SEARCH_OU).split("|")
]
search = LDAPSearchUnion(*user_search_union)
if search is None:
raise ImproperlyConfigured(
'AUTH_LDAP_USER_SEARCH must be an LDAPSearch instance.'
)
results = search.execute(self.connection, {'user': self._username})
if results is not None and len(results) == 1:
(user_dn, self._user_attrs) = next(iter(results))
else:
user_dn = None
return user_dn
def _populate_user_from_attributes(self):
super()._populate_user_from_attributes()
if not hasattr(self._user, 'email') or '@' not in self._user.email:
email = '{}@{}'.format(self._user.username, settings.EMAIL_SUFFIX)
setattr(self._user, 'email', email)