-# -*- coding: utf-8 -*-
-#
-# django-ldapdb
-# Copyright (C) 2009 Bolloré telecom
-# See AUTHORS file for a full list of contributors.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
-
-# -*- coding: utf-8 -*-
-
-import ldap
-import logging
-
-import django.db.models
-
-from granadilla.db import connection as ldap_connection
-from granadilla.db.query import QuerySet
-
-class ModelBase(django.db.models.base.ModelBase):
- """
- Metaclass for all LDAP models.
- """
- def __new__(cls, name, bases, attrs):
- attr_meta = attrs.get('Meta', None)
- if attr_meta:
- dn = attr_meta._dn
- object_classes = attr_meta._object_classes
-
- super_new = super(ModelBase, cls).__new__
- new_class = super_new(cls, name, bases, attrs)
-
- # patch manager to use our own QuerySet class
- def get_query_set():
- return QuerySet(new_class)
- new_class.objects.get_query_set = get_query_set
- new_class._default_manager.get_query_set = get_query_set
-
- if attr_meta:
- new_class._meta.dn = dn
- new_class._meta.object_classes = attr_meta._object_classes
-
- return new_class
-
-class Model(django.db.models.base.Model):
- """
- Base class for all LDAP models.
- """
- __metaclass__ = ModelBase
-
- def __init__(self, dn=None, *args, **kwargs):
- self.dn = dn
- super(Model, self).__init__(*args, **kwargs)
-
- def build_dn(self):
- """
- Build the Distinguished Name for this entry.
- """
- for field in self._meta.local_fields:
- if field.primary_key:
- return "%s=%s,%s" % (field.db_column, getattr(self, field.name), self._meta.dn)
- raise Exception("Could not build Distinguished Name")
-
- def delete(self):
- """
- Delete this entry.
- """
- logging.debug("Deleting LDAP entry %s" % self.dn)
- ldap_connection.delete_s(self.dn)
-
- def save(self):
- # create a new entry
- if not self.dn:
- entry = [('objectClass', self._meta.object_classes)]
- new_dn = self.build_dn()
-
- for field in self._meta.local_fields:
- if not field.db_column:
- continue
- value = getattr(self, field.name)
- if value:
- entry.append((field.db_column, value))
-
- logging.debug("Creating new LDAP entry %s" % new_dn)
- ldap_connection.add_s(new_dn, entry)
-
- # update object
- self.dn = new_dn
- return
-
- # update an existing entry
- modlist = []
- orig = self.__class__.objects.get(pk=self.pk)
- for field in self._meta.local_fields:
- if not field.db_column:
- continue
- old_value = getattr(orig, field.name, None)
- new_value = getattr(self, field.name, None)
- if old_value != new_value:
- if new_value:
- modlist.append((ldap.MOD_REPLACE, field.db_column, new_value))
- elif old_value:
- modlist.append((ldap.MOD_DELETE, field.db_column, None))
-
- if len(modlist):
- logging.debug("Modifying existing LDAP entry %s" % self.dn)
- ldap_connection.modify_s(self.dn, modlist)
- else:
- logging.debug("No changes to be saved to LDAP entry %s" % self.dn)
-