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  * Portions Copyright 2002 Pierangelo Masarati.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by Dmitry Kovalev for inclusion
  19  * by OpenLDAP Software.  Additional significant contributors include
  20  * Pierangelo Masarati.
  21  */
  22
  23 #include "portable.h"
  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 = SQL_NULL_HDBC;
  35         Entry                   *e = NULL, user_entry;
  36         Attribute               *a = NULL;
  37         backsql_srch_info       bsi;
  38         int                     rc;
  39         AttributeName           anlist[2],
  40                                 *anlistp = NULL;
  41
  42         BER_BVZERO( &user_entry.e_name );
  43         BER_BVZERO( &user_entry.e_nname );
  44         user_entry.e_attrs = NULL;
  45
  46         Debug( LDAP_DEBUG_TRACE, "==>backsql_compare()\n", 0, 0, 0 );
  47
  48         rs->sr_err = backsql_get_db_conn( op, &dbh );
  49         if (!dbh) {
  50                 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  51                         "could not get connection handle - exiting\n",
  52                         0, 0, 0 );
  53
  54                 rs->sr_text = ( rs->sr_err == LDAP_OTHER )
  55                         ? "SQL-backend error" : NULL;
  56                 goto return_results;
  57         }
  58
  59         memset( &anlist[0], 0, 2 * sizeof( AttributeName ) );
  60         anlist[0].an_name = op->oq_compare.rs_ava->aa_desc->ad_cname;
  61         anlist[0].an_desc = op->oq_compare.rs_ava->aa_desc;
  62
  63         /*
  64          * Try to get attr as dynamic operational
  65          */
  66         if ( !is_at_operational( op->oq_compare.rs_ava->aa_desc->ad_type ) ) {
  67                 anlistp = anlist;
  68         }
  69
  70         /*
  71          * FIXME: deal with matchedDN/referral?
  72          */
  73         rc = backsql_init_search( &bsi, &op->o_req_ndn,
  74                         LDAP_SCOPE_BASE,
  75                         SLAP_NO_LIMIT, SLAP_NO_LIMIT,
  76                         (time_t)(-1), NULL, dbh, op, rs, anlistp,
  77                         BACKSQL_ISF_GET_ID );
  78         if ( rc != LDAP_SUCCESS ) {
  79                 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  80                         "could not retrieve compareDN ID - no such entry\n",
  81                         0, 0, 0 );
  82                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
  83                 goto return_results;
  84         }
  85
  86         if ( is_at_operational( op->oq_compare.rs_ava->aa_desc->ad_type ) ) {
  87                 SlapReply       nrs = { 0 };
  88
  89                 user_entry.e_attrs = NULL;
  90                 user_entry.e_name = bsi.bsi_base_id.eid_dn;
  91                 user_entry.e_nname = bsi.bsi_base_id.eid_ndn;
  92
  93                 nrs.sr_attrs = anlist;
  94                 nrs.sr_entry = &user_entry;
  95                 nrs.sr_attr_flags = SLAP_OPATTRS_NO;
  96                 nrs.sr_operational_attrs = NULL;
  97
  98                 rs->sr_err = backsql_operational( op, &nrs );
  99                 if ( rs->sr_err != LDAP_SUCCESS ) {
 100                         goto return_results;
 101                 }
 102
 103                 user_entry.e_attrs = nrs.sr_operational_attrs;
 104
 105         } else {
 106                 bsi.bsi_e = &user_entry;
 107                 rc = backsql_id2entry( &bsi, &bsi.bsi_base_id );
 108                 if ( rc != LDAP_SUCCESS ) {
 109                         Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
 110                                 "error %d in backsql_id2entry() "
 111                                 "- compare failed\n", rc, 0, 0 );
 112                         rs->sr_err = rc;
 113                         goto return_results;
 114                 }
 115         }
 116         e = &user_entry;
 117
 118         if ( ! access_allowed( op, e, op->oq_compare.rs_ava->aa_desc,
 119                                 &op->oq_compare.rs_ava->aa_value,
 120                                 ACL_COMPARE, NULL ) ) {
 121 #ifdef SLAP_ACL_HONOR_DISCLOSE
 122                 if ( ! access_allowed( op, &e, slap_schema.si_ad_entry, NULL,
 123                                         ACL_DISCLOSE, NULL ) ) {
 124                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 125                 } else
 126 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 127                 {
 128                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 129                 }
 130                 goto return_results;
 131         }
 132
 133         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 134         for ( a = attrs_find( e->e_attrs, op->oq_compare.rs_ava->aa_desc );
 135                         a != NULL;
 136                         a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ) )
 137         {
 138                 rs->sr_err = LDAP_COMPARE_FALSE;
 139                 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
 140                                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 141                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 142                                         a->a_nvals,
 143                                         &op->oq_compare.rs_ava->aa_value,
 144                                         op->o_tmpmemctx ) == 0 )
 145                 {
 146                         rs->sr_err = LDAP_COMPARE_TRUE;
 147                         break;
 148                 }
 149         }
 150
 151 return_results:;
 152         send_ldap_result( op, rs );
 153
 154         if ( !BER_BVISNULL( &bsi.bsi_base_id.eid_ndn ) ) {
 155                 (void)backsql_free_entryID( &bsi.bsi_base_id, 0 );
 156         }
 157
 158         if ( e != NULL ) {
 159                 entry_clean( e );
 160         }
 161
 162         if ( bsi.bsi_attrs != NULL ) {
 163                 op->o_tmpfree( bsi.bsi_attrs, op->o_tmpmemctx );
 164         }
 165
 166         Debug(LDAP_DEBUG_TRACE,"<==backsql_compare()\n",0,0,0);
 167         switch ( rs->sr_err ) {
 168         case LDAP_COMPARE_TRUE:
 169         case LDAP_COMPARE_FALSE:
 170                 return 0;
 171
 172         default:
 173                 return 1;
 174         }
 175 }
 176