source4/dsdb/samdb/ldb_modules/schema.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4
   5    Copyright (C) Andrew Tridgell 2009
   6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "ldb.h"
  24 #include "ldb_module.h"
  25 #include "librpc/ndr/libndr.h"
  26 #include "dsdb/samdb/ldb_modules/util.h"
  27 #include "dsdb/samdb/samdb.h"
  28 #include "dsdb/common/util.h"
  29 #include "libcli/security/security.h"
  30 #include "dsdb/samdb/ldb_modules/schema.h"
  31
  32 /*
  33  * This function determines the (last) structural or 88 object class of a passed
  34  * "objectClass" attribute - per MS-ADTS 3.1.1.1.4 this is the last value.
  35  * Without schema this does not work and hence NULL is returned.
  36  */
  37 const struct dsdb_class *get_last_structural_class(const struct dsdb_schema *schema,
  38                                                    const struct ldb_message_element *element)
  39 {
  40         const struct dsdb_class *last_class;
  41
  42         if (schema == NULL) {
  43                 return NULL;
  44         }
  45
  46         if (element->num_values == 0) {
  47                 return NULL;
  48         }
  49
  50         last_class = dsdb_class_by_lDAPDisplayName_ldb_val(schema,
  51                                                            &element->values[element->num_values-1]);
  52         if (last_class == NULL) {
  53                 return NULL;
  54         }
  55         if (last_class->objectClassCategory > 1) {
  56                 return NULL;
  57         }
  58
  59         return last_class;
  60 }
  61
  62 const struct GUID *get_oc_guid_from_message(struct ldb_module *module,
  63                                                    const struct dsdb_schema *schema,
  64                                                    struct ldb_message *msg)
  65 {
  66         struct ldb_message_element *oc_el;
  67
  68         oc_el = ldb_msg_find_element(msg, "objectClass");
  69         if (!oc_el) {
  70                 return NULL;
  71         }
  72
  73         return class_schemaid_guid_by_lDAPDisplayName(schema,
  74                                                       (char *)oc_el->values[oc_el->num_values-1].data);
  75 }
  76
  77