new_contents: # -*- coding: utf-8 -*-
  # 
  # django-ldapdb
  # Copyright (c) 2009-2010, Bolloré telecom
  # All rights reserved.
  # 
  # See AUTHORS file for a full list of contributors.
  # 
  # Redistribution and use in source and binary forms, with or without modification,
  # are permitted provided that the following conditions are met:
  # 
  #     1. Redistributions of source code must retain the above copyright notice, 
  #        this list of conditions and the following disclaimer.
  #     
  #     2. Redistributions in binary form must reproduce the above copyright 
  #        notice, this list of conditions and the following disclaimer in the
  #        documentation and/or other materials provided with the distribution.
  # 
  #     3. Neither the name of Bolloré telecom nor the names of its contributors
  #        may be used to endorse or promote products derived from this software
  #        without specific prior written permission.
  # 
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #
  
  import ldap
  
  from django.db.backends import BaseDatabaseFeatures, BaseDatabaseOperations, BaseDatabaseWrapper
  
  class DatabaseCursor(object):
      def __init__(self, ldap_connection):
          self.connection = ldap_connection
  
  class DatabaseFeatures(BaseDatabaseFeatures):
      def __init__(self, connection):
          self.connection = connection
  
  class DatabaseOperations(BaseDatabaseOperations):
      def quote_name(self, name):
          return name
  
  class DatabaseWrapper(BaseDatabaseWrapper):
      def __init__(self, settings_dict, alias='ldap'):
          super(DatabaseWrapper, self).__init__(settings_dict, alias=alias)
  
          self.charset = "utf-8"
          self.features = DatabaseFeatures(self)
          self.ops = DatabaseOperations()
  
      def close(self):
          pass
  
      def _cursor(self):
          if self.connection is None:
              self.connection = ldap.initialize(self.settings_dict['NAME'])
              self.connection.simple_bind_s(
                  self.settings_dict['USER'],
                  self.settings_dict['PASSWORD'])
          return DatabaseCursor(self.connection)
  
      def add_s(self, dn, modlist):
          cursor = self._cursor()
          return cursor.connection.add_s(dn.encode(self.charset), modlist)
  
      def delete_s(self, dn):
          cursor = self._cursor()
          return cursor.connection.delete_s(dn.encode(self.charset))
  
      def modify_s(self, dn, modlist):
          cursor = self._cursor()
          return cursor.connection.modify_s(dn.encode(self.charset), modlist)
  
      def rename_s(self, dn, newrdn):
          cursor = self._cursor()
          return cursor.connection.rename_s(dn.encode(self.charset), newrdn.encode(self.charset))
  
      def search_s(self, base, scope, filterstr, attrlist):
          cursor = self._cursor()
          results = cursor.connection.search_s(base, scope, filterstr.encode(self.charset), attrlist)
          output = []
          for dn, attrs in results:
              output.append((dn.decode(self.charset), attrs))
          return output
  
  
subject: move backend definition