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 1999-2004 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         SQLHDBC                 dbh;
  35         Entry                   *e = NULL, user_entry;
  36         Attribute               *a = NULL;
  37         backsql_srch_info       bsi;
  38         int                     rc;
  39         AttributeName           anlist[2];
  40         struct berval           ndn;
  41
  42         user_entry.e_name.bv_val = NULL;
  43         user_entry.e_name.bv_len = 0;
  44         user_entry.e_nname.bv_val = NULL;
  45         user_entry.e_nname.bv_len = 0;
  46         user_entry.e_attrs = NULL;
  47
  48         Debug( LDAP_DEBUG_TRACE, "==>backsql_compare()\n", 0, 0, 0 );
  49
  50         rs->sr_err = backsql_get_db_conn( op, &dbh );
  51         if (!dbh) {
  52                 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  53                         "could not get connection handle - exiting\n",
  54                         0, 0, 0 );
  55
  56                 rs->sr_text = ( rs->sr_err == LDAP_OTHER )
  57                         ? "SQL-backend error" : NULL;
  58                 goto return_results;
  59         }
  60
  61         ndn = op->o_req_ndn;
  62         if ( backsql_api_dn2odbc( op, rs, &ndn ) ) {
  63                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
  64                         "backsql_api_dn2odbc failed\n",
  65                         0, 0, 0 );
  66                 rs->sr_err = LDAP_OTHER;
  67                 rs->sr_text = "SQL-backend error";
  68                 goto return_results;
  69         }
  70
  71         memset( &anlist[0], 0, 2 * sizeof( AttributeName ) );
  72         anlist[0].an_name = op->oq_compare.rs_ava->aa_desc->ad_cname;
  73         anlist[0].an_desc = op->oq_compare.rs_ava->aa_desc;
  74
  75         /*
  76          * Try to get attr as dynamic operational
  77          */
  78         if ( is_at_operational( op->oq_compare.rs_ava->aa_desc->ad_type ) ) {
  79                 SlapReply       nrs = { 0 };
  80
  81                 user_entry.e_attrs = NULL;
  82                 user_entry.e_name = op->o_req_dn;
  83                 user_entry.e_nname = op->o_req_ndn;
  84
  85                 nrs.sr_attrs = anlist;
  86                 nrs.sr_entry = &user_entry;
  87                 nrs.sr_attr_flags = SLAP_OPATTRS_NO;
  88                 nrs.sr_operational_attrs = NULL;
  89
  90                 rs->sr_err = backsql_operational( op, &nrs );
  91                 if ( rs->sr_err != LDAP_SUCCESS ) {
  92                         goto return_results;
  93                 }
  94
  95                 user_entry.e_attrs = nrs.sr_operational_attrs;
  96
  97         } else {
  98                 rc = backsql_init_search( &bsi, &ndn, LDAP_SCOPE_BASE,
  99                                 -1, -1, -1, NULL, dbh, op, rs, anlist, 1 );
 100                 if ( rc != LDAP_SUCCESS ) {
 101                         Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
 102                                 "could not retrieve compareDN ID - no such entry\n",
 103                                 0, 0, 0 );
 104                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 105                         goto return_results;
 106                 }
 107
 108                 bsi.bsi_e = &user_entry;
 109                 rc = backsql_id2entry( &bsi, &bsi.bsi_base_id );
 110                 if ( rc != LDAP_SUCCESS ) {
 111                         Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
 112                                 "error %d in backsql_id2entry() "
 113                                 "- compare failed\n", rc, 0, 0 );
 114                         rs->sr_err = rc;
 115                         goto return_results;
 116                 }
 117         }
 118         e = &user_entry;
 119
 120         if ( ! access_allowed( op, e, op->oq_compare.rs_ava->aa_desc,
 121                                 &op->oq_compare.rs_ava->aa_value,
 122                                 ACL_COMPARE, NULL ) ) {
 123                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 124                 goto return_results;
 125         }
 126
 127         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 128         for ( a = attrs_find( e->e_attrs, op->oq_compare.rs_ava->aa_desc );
 129                         a != NULL;
 130                         a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ))
 131         {
 132                 rs->sr_err = LDAP_COMPARE_FALSE;
 133                 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
 134                                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 135                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 136                                         a->a_nvals,
 137                                         &op->oq_compare.rs_ava->aa_value,
 138                                         op->o_tmpmemctx ) == 0 )
 139                 {
 140                         rs->sr_err = LDAP_COMPARE_TRUE;
 141                         break;
 142                 }
 143         }
 144
 145 return_results:;
 146         send_ldap_result( op, rs );
 147
 148         if ( !BER_BVISNULL( &bsi.bsi_base_id.eid_ndn ) ) {
 149                 (void)backsql_free_entryID( &bsi.bsi_base_id, 0 );
 150         }
 151
 152         if ( ndn.bv_val != op->o_req_ndn.bv_val ) {
 153                 ch_free( ndn.bv_val );
 154         }
 155
 156         if ( e != NULL ) {
 157                 entry_clean( e );
 158         }
 159
 160         Debug(LDAP_DEBUG_TRACE,"<==backsql_compare()\n",0,0,0);
 161         switch ( rs->sr_err ) {
 162         case LDAP_COMPARE_TRUE:
 163         case LDAP_COMPARE_FALSE:
 164                 return 0;
 165
 166         default:
 167                 return 1;
 168         }
 169 }
 170
 171 #endif /* SLAPD_SQL */
 172