git.sur5r.net Git - openldap/blob - servers/slapd/back-sql/compare.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1999-2005 The OpenLDAP Foundation.
   5  * Portions Copyright 1999 Dmitry Kovalev.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Dmitry Kovalev for inclusion
  18  * by OpenLDAP Software.
  19  */
  20
  21 #include "portable.h"
  22
  23 #ifdef SLAPD_SQL
  24
  25 #include <stdio.h>
  26 #include <sys/types.h>
  27
  28 #include "slap.h"
  29 #include "proto-sql.h"
  30
  31 int
  32 backsql_compare( Operation *op, SlapReply *rs )
  33 {
  34         backsql_info            *bi = (backsql_info*)op->o_bd->be_private;
  35         backsql_entryID         user_id = BACKSQL_ENTRYID_INIT;
  36         SQLHDBC                 dbh;
  37         Entry                   *e = NULL, user_entry;
  38         Attribute               *a = NULL;
  39         backsql_srch_info       bsi;
  40         int                     rc;
  41         AttributeName           anlist[2];
  42         struct berval           dn;
  43
  44         user_entry.e_name.bv_val = NULL;
  45         user_entry.e_name.bv_len = 0;
  46         user_entry.e_nname.bv_val = NULL;
  47         user_entry.e_nname.bv_len = 0;
  48         user_entry.e_attrs = NULL;
  49
  50         Debug( LDAP_DEBUG_TRACE, "==>backsql_compare()\n", 0, 0, 0 );
  51
  52         rs->sr_err = backsql_get_db_conn( op, &dbh );
  53         if (!dbh) {
  54                 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  55                         "could not get connection handle - exiting\n",
  56                         0, 0, 0 );
  57
  58                 rs->sr_text = ( rs->sr_err == LDAP_OTHER )
  59                         ? "SQL-backend error" : NULL;
  60                 goto return_results;
  61         }
  62
  63         dn = op->o_req_dn;
  64         if ( backsql_api_dn2odbc( op, rs, &dn ) ) {
  65                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
  66                         "backsql_api_dn2odbc failed\n",
  67                         0, 0, 0 );
  68                 rs->sr_err = LDAP_OTHER;
  69                 rs->sr_text = "SQL-backend error";
  70                 goto return_results;
  71         }
  72
  73         rc = backsql_dn2id( bi, &user_id, dbh, &dn );
  74         if ( rc != LDAP_SUCCESS ) {
  75                 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  76                         "could not retrieve compare dn id - no such entry\n",
  77                         0, 0, 0 );
  78                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
  79                 goto return_results;
  80         }
  81
  82         memset( &anlist[0], 0, 2 * sizeof( AttributeName ) );
  83         anlist[0].an_name = op->oq_compare.rs_ava->aa_desc->ad_cname;
  84         anlist[0].an_desc = op->oq_compare.rs_ava->aa_desc;
  85
  86         /*
  87          * Try to get attr as dynamic operational
  88          */
  89         if ( is_at_operational( op->oq_compare.rs_ava->aa_desc->ad_type ) ) {
  90                 SlapReply       nrs = { 0 };
  91
  92                 user_entry.e_attrs = NULL;
  93                 user_entry.e_name = op->o_req_dn;
  94                 user_entry.e_nname = op->o_req_ndn;
  95
  96                 nrs.sr_attrs = anlist;
  97                 nrs.sr_entry = &user_entry;
  98                 rs->sr_err = backsql_operational( op, &nrs, 0, &user_entry.e_attrs );
  99
 100                 if ( rs->sr_err != LDAP_SUCCESS ) {
 101                         goto return_results;
 102                 }
 103
 104         } else {
 105                 backsql_init_search( &bsi, &dn, LDAP_SCOPE_BASE,
 106                                         -1, -1, -1, NULL, dbh, op, rs, anlist );
 107                 bsi.bsi_e = &user_entry;
 108                 rc = backsql_id2entry( &bsi, &user_id );
 109                 if ( rc != LDAP_SUCCESS ) {
 110                         Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
 111                                 "error %d in backsql_id2entry() "
 112                                 "- compare failed\n", rc, 0, 0 );
 113                         rs->sr_err = rc;
 114                         goto return_results;
 115                 }
 116         }
 117         e = &user_entry;
 118
 119         if ( ! access_allowed( op, e, op->oq_compare.rs_ava->aa_desc,
 120                                 &op->oq_compare.rs_ava->aa_value,
 121                                 ACL_COMPARE, NULL ) ) {
 122                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 123                 goto return_results;
 124         }
 125
 126         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 127         for ( a = attrs_find( e->e_attrs, op->oq_compare.rs_ava->aa_desc );
 128                         a != NULL;
 129                         a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ))
 130         {
 131                 rs->sr_err = LDAP_COMPARE_FALSE;
 132                 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
 133                                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 134                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 135                                         a->a_nvals,
 136                                         &op->oq_compare.rs_ava->aa_value,
 137                                         op->o_tmpmemctx ) == 0 )
 138                 {
 139                         rs->sr_err = LDAP_COMPARE_TRUE;
 140                         break;
 141                 }
 142         }
 143
 144 return_results:;
 145         send_ldap_result( op, rs );
 146
 147         if ( dn.bv_val != op->o_req_dn.bv_val ) {
 148                 ch_free( dn.bv_val );
 149         }
 150
 151         if ( e != NULL ) {
 152                 entry_clean( e );
 153         }
 154
 155         Debug(LDAP_DEBUG_TRACE,"<==backsql_compare()\n",0,0,0);
 156         switch ( rs->sr_err ) {
 157         case LDAP_COMPARE_TRUE:
 158         case LDAP_COMPARE_FALSE:
 159                 return 0;
 160
 161         default:
 162                 return 1;
 163         }
 164 }
 165
 166 #endif /* SLAPD_SQL */
 167