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;
  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
  43         user_entry.e_name.bv_val = NULL;
  44         user_entry.e_name.bv_len = 0;
  45         user_entry.e_nname.bv_val = NULL;
  46         user_entry.e_nname.bv_len = 0;
  47         user_entry.e_attrs = NULL;
  48
  49         Debug( LDAP_DEBUG_TRACE, "==>backsql_compare()\n", 0, 0, 0 );
  50
  51         rs->sr_err = backsql_get_db_conn( op, &dbh );
  52         if (!dbh) {
  53                 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  54                         "could not get connection handle - exiting\n",
  55                         0, 0, 0 );
  56
  57                 rs->sr_text = ( rs->sr_err == LDAP_OTHER )
  58                         ? "SQL-backend error" : NULL;
  59                 goto return_results;
  60         }
  61
  62         rc = backsql_dn2id( bi, &user_id, dbh, &op->o_req_ndn );
  63         if ( rc != LDAP_SUCCESS ) {
  64                 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
  65                         "could not retrieve compare dn id - no such entry\n",
  66                         0, 0, 0 );
  67                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
  68                 goto return_results;
  69         }
  70
  71         anlist[0].an_name = op->oq_compare.rs_ava->aa_desc->ad_cname;
  72         anlist[0].an_desc = op->oq_compare.rs_ava->aa_desc;
  73         anlist[1].an_name.bv_val = NULL;
  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                 AttributeName   *an_old;
  80                 Entry           *e_old;
  81
  82                 user_entry.e_attrs = NULL;
  83                 user_entry.e_name = op->o_req_dn;
  84                 user_entry.e_nname = op->o_req_ndn;
  85
  86                 an_old = rs->sr_attrs;
  87                 e_old = rs->sr_entry;
  88
  89                 rs->sr_attrs = anlist;
  90                 rs->sr_entry = &user_entry;
  91                 rs->sr_err = backsql_operational( op, rs, 0, &a_op );
  92                 rs->sr_attrs = an_old;
  93                 rs->sr_entry = e_old;
  94
  95                 if ( rs->sr_err != LDAP_SUCCESS ) {
  96                         goto return_results;
  97                 }
  98
  99         }
 100
 101         /*
 102          * attr was dynamic operational
 103          */
 104         if ( a_op != NULL ) {
 105                 user_entry.e_attrs = a_op;
 106                 e = &user_entry;
 107
 108         } else {
 109                 backsql_init_search( &bsi, &op->o_req_ndn, LDAP_SCOPE_BASE,
 110                                 -1, -1, -1, NULL, dbh, op, anlist );
 111                 e = backsql_id2entry( &bsi, &user_entry, &user_id );
 112                 if ( e == NULL ) {
 113                         Debug( LDAP_DEBUG_TRACE, "backsql_compare(): "
 114                                 "error in backsql_id2entry() "
 115                                 "- compare failed\n", 0, 0, 0 );
 116                         rs->sr_err = LDAP_OTHER;
 117                         goto return_results;
 118                 }
 119         }
 120
 121         if ( ! access_allowed( op, e, op->oq_compare.rs_ava->aa_desc,
 122                                 &op->oq_compare.rs_ava->aa_value,
 123                                 ACL_COMPARE, NULL ) ) {
 124                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 125                 goto return_results;
 126         }
 127
 128         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 129         for ( a = attrs_find( e->e_attrs, op->oq_compare.rs_ava->aa_desc );
 130                         a != NULL;
 131                         a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ))
 132         {
 133                 rs->sr_err = LDAP_COMPARE_FALSE;
 134                 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
 135                                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 136                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 137                                         a->a_nvals,
 138                                         &op->oq_compare.rs_ava->aa_value,
 139                                         op->o_tmpmemctx ) == 0 )
 140                 {
 141                         rs->sr_err = LDAP_COMPARE_TRUE;
 142                         break;
 143                 }
 144         }
 145
 146 return_results:;
 147         send_ldap_result( op, rs );
 148
 149         if ( e != NULL ) {
 150                 if ( e->e_name.bv_val != NULL ) {
 151                         free( e->e_name.bv_val );
 152                 }
 153
 154                 if ( e->e_nname.bv_val != NULL ) {
 155                         free( e->e_nname.bv_val );
 156                 }
 157
 158                 if ( e->e_attrs != NULL ) {
 159                         attrs_free( e->e_attrs );
 160                 }
 161         }
 162
 163         Debug(LDAP_DEBUG_TRACE,"<==backsql_compare()\n",0,0,0);
 164         switch ( rs->sr_err ) {
 165         case LDAP_COMPARE_TRUE:
 166         case LDAP_COMPARE_FALSE:
 167                 return 0;
 168
 169         default:
 170                 return 1;
 171         }
 172 }
 173
 174 #endif /* SLAPD_SQL */
 175