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         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, *a_op = 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         anlist[0].an_name = op->oq_compare.rs_ava->aa_desc->ad_cname;
  83         anlist[0].an_desc = op->oq_compare.rs_ava->aa_desc;
  84         anlist[1].an_name.bv_val = NULL;
  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                 AttributeName   *an_old;
  91                 Entry           *e_old;
  92
  93                 user_entry.e_attrs = NULL;
  94                 user_entry.e_name = op->o_req_dn;
  95                 user_entry.e_nname = op->o_req_ndn;
  96
  97                 an_old = rs->sr_attrs;
  98                 e_old = rs->sr_entry;
  99
 100                 rs->sr_attrs = anlist;
 101                 rs->sr_entry = &user_entry;
 102                 rs->sr_err = backsql_operational( op, rs, 0, &a_op );
 103                 rs->sr_attrs = an_old;
 104                 rs->sr_entry = e_old;
 105
 106                 if ( rs->sr_err != LDAP_SUCCESS ) {
 107                         goto return_results;
 108                 }
 109
 110         }
 111
 112         /*
 113          * attr was dynamic operational
 114          */
 115         if ( a_op != NULL ) {
 116                 user_entry.e_attrs = a_op;
 117                 e = &user_entry;
 118
 119         } else {
 120                 backsql_init_search( &bsi, &dn, LDAP_SCOPE_BASE,
 121                                 -1, -1, -1, NULL, dbh, op, rs, anlist );
 122                 e = backsql_id2entry( &bsi, &user_entry, &user_id );
 123                 if ( e == NULL ) {
 124                         Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
 125                                 "error in backsql_id2entry() "
 126                                 "- compare failed\n", 0, 0, 0 );
 127                         rs->sr_err = LDAP_OTHER;
 128                         goto return_results;
 129                 }
 130         }
 131
 132         if ( ! access_allowed( op, e, op->oq_compare.rs_ava->aa_desc,
 133                                 &op->oq_compare.rs_ava->aa_value,
 134                                 ACL_COMPARE, NULL ) ) {
 135                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 136                 goto return_results;
 137         }
 138
 139         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 140         for ( a = attrs_find( e->e_attrs, op->oq_compare.rs_ava->aa_desc );
 141                         a != NULL;
 142                         a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ))
 143         {
 144                 rs->sr_err = LDAP_COMPARE_FALSE;
 145                 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
 146                                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 147                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 148                                         a->a_nvals,
 149                                         &op->oq_compare.rs_ava->aa_value,
 150                                         op->o_tmpmemctx ) == 0 )
 151                 {
 152                         rs->sr_err = LDAP_COMPARE_TRUE;
 153                         break;
 154                 }
 155         }
 156
 157 return_results:;
 158         send_ldap_result( op, rs );
 159
 160         if ( dn.bv_val != op->o_req_dn.bv_val ) {
 161                 ch_free( dn.bv_val );
 162         }
 163
 164         if ( e != NULL ) {
 165                 if ( e->e_name.bv_val != NULL ) {
 166                         free( e->e_name.bv_val );
 167                 }
 168
 169                 if ( e->e_nname.bv_val != NULL ) {
 170                         free( e->e_nname.bv_val );
 171                 }
 172
 173                 if ( e->e_attrs != NULL ) {
 174                         attrs_free( e->e_attrs );
 175                 }
 176         }
 177
 178         Debug(LDAP_DEBUG_TRACE,"<==backsql_compare()\n",0,0,0);
 179         switch ( rs->sr_err ) {
 180         case LDAP_COMPARE_TRUE:
 181         case LDAP_COMPARE_FALSE:
 182                 return 0;
 183
 184         default:
 185                 return 1;
 186         }
 187 }
 188
 189 #endif /* SLAPD_SQL */
 190