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 #include <stdio.h>
  24 #include <sys/types.h>
  25
  26 #include "slap.h"
  27 #include "proto-sql.h"
  28
  29 int
  30 backsql_compare( Operation *op, SlapReply *rs )
  31 {
  32         SQLHDBC                 dbh = SQL_NULL_HDBC;
  33         Entry                   *e = NULL, user_entry;
  34         Attribute               *a = NULL;
  35         backsql_srch_info       bsi;
  36         int                     rc;
  37         AttributeName           anlist[2];
  38
  39         user_entry.e_name.bv_val = NULL;
  40         user_entry.e_name.bv_len = 0;
  41         user_entry.e_nname.bv_val = NULL;
  42         user_entry.e_nname.bv_len = 0;
  43         user_entry.e_attrs = NULL;
  44
  45         Debug( LDAP_DEBUG_TRACE, "==>backsql_compare()\n", 0, 0, 0 );
  46
  47         rs->sr_err = backsql_get_db_conn( op, &dbh );
  48         if (!dbh) {
  49                 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  50                         "could not get connection handle - exiting\n",
  51                         0, 0, 0 );
  52
  53                 rs->sr_text = ( rs->sr_err == LDAP_OTHER )
  54                         ? "SQL-backend error" : NULL;
  55                 goto return_results;
  56         }
  57
  58         memset( &anlist[0], 0, 2 * sizeof( AttributeName ) );
  59         anlist[0].an_name = op->oq_compare.rs_ava->aa_desc->ad_cname;
  60         anlist[0].an_desc = op->oq_compare.rs_ava->aa_desc;
  61
  62         /*
  63          * Try to get attr as dynamic operational
  64          */
  65         if ( is_at_operational( op->oq_compare.rs_ava->aa_desc->ad_type ) ) {
  66                 SlapReply       nrs = { 0 };
  67
  68                 user_entry.e_attrs = NULL;
  69                 user_entry.e_name = op->o_req_dn;
  70                 user_entry.e_nname = op->o_req_ndn;
  71
  72                 nrs.sr_attrs = anlist;
  73                 nrs.sr_entry = &user_entry;
  74                 nrs.sr_attr_flags = SLAP_OPATTRS_NO;
  75                 nrs.sr_operational_attrs = NULL;
  76
  77                 rs->sr_err = backsql_operational( op, &nrs );
  78                 if ( rs->sr_err != LDAP_SUCCESS ) {
  79                         goto return_results;
  80                 }
  81
  82                 user_entry.e_attrs = nrs.sr_operational_attrs;
  83
  84         } else {
  85                 rc = backsql_init_search( &bsi, &op->o_req_ndn,
  86                                 LDAP_SCOPE_BASE,
  87                                 SLAP_NO_LIMIT, SLAP_NO_LIMIT,
  88                                 (time_t)(-1), NULL, dbh, op, rs, anlist,
  89                                 BACKSQL_ISF_GET_ID );
  90                 if ( rc != LDAP_SUCCESS ) {
  91                         Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  92                                 "could not retrieve compareDN ID - no such entry\n",
  93                                 0, 0, 0 );
  94                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
  95                         goto return_results;
  96                 }
  97
  98                 bsi.bsi_e = &user_entry;
  99                 rc = backsql_id2entry( &bsi, &bsi.bsi_base_id );
 100                 if ( rc != LDAP_SUCCESS ) {
 101                         Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
 102                                 "error %d in backsql_id2entry() "
 103                                 "- compare failed\n", rc, 0, 0 );
 104                         rs->sr_err = rc;
 105                         goto return_results;
 106                 }
 107         }
 108         e = &user_entry;
 109
 110         if ( ! access_allowed( op, e, op->oq_compare.rs_ava->aa_desc,
 111                                 &op->oq_compare.rs_ava->aa_value,
 112                                 ACL_COMPARE, NULL ) ) {
 113                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 114                 goto return_results;
 115         }
 116
 117         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 118         for ( a = attrs_find( e->e_attrs, op->oq_compare.rs_ava->aa_desc );
 119                         a != NULL;
 120                         a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ))
 121         {
 122                 rs->sr_err = LDAP_COMPARE_FALSE;
 123                 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
 124                                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 125                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 126                                         a->a_nvals,
 127                                         &op->oq_compare.rs_ava->aa_value,
 128                                         op->o_tmpmemctx ) == 0 )
 129                 {
 130                         rs->sr_err = LDAP_COMPARE_TRUE;
 131                         break;
 132                 }
 133         }
 134
 135 return_results:;
 136         send_ldap_result( op, rs );
 137
 138         if ( !BER_BVISNULL( &bsi.bsi_base_id.eid_ndn ) ) {
 139                 (void)backsql_free_entryID( &bsi.bsi_base_id, 0 );
 140         }
 141
 142         if ( e != NULL ) {
 143                 entry_clean( e );
 144         }
 145
 146         Debug(LDAP_DEBUG_TRACE,"<==backsql_compare()\n",0,0,0);
 147         switch ( rs->sr_err ) {
 148         case LDAP_COMPARE_TRUE:
 149         case LDAP_COMPARE_FALSE:
 150                 return 0;
 151
 152         default:
 153                 return 1;
 154         }
 155 }
 156