git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/compare.c

   1 /* compare.c - bdb backend compare routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2004 The OpenLDAP Foundation.
   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
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21
  22 #include "back-bdb.h"
  23 #include "external.h"
  24
  25 int
  26 bdb_compare( Operation *op, SlapReply *rs )
  27 {
  28         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  29         Entry           *e = NULL;
  30         EntryInfo       *ei;
  31         Attribute       *a;
  32         int             manageDSAit = get_manageDSAit( op );
  33
  34         u_int32_t       locker;
  35         DB_LOCK         lock;
  36
  37         rs->sr_err = LOCK_ID(bdb->bi_dbenv, &locker);
  38         switch(rs->sr_err) {
  39         case 0:
  40                 break;
  41         default:
  42                 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
  43                 return rs->sr_err;
  44         }
  45
  46 dn2entry_retry:
  47         /* get entry */
  48         rs->sr_err = bdb_dn2entry( op, NULL, &op->o_req_ndn, &ei, 1, locker, &lock );
  49
  50         switch( rs->sr_err ) {
  51         case DB_NOTFOUND:
  52         case 0:
  53                 break;
  54         case LDAP_BUSY:
  55                 rs->sr_text = "ldap server busy";
  56                 goto return_results;
  57         case DB_LOCK_DEADLOCK:
  58         case DB_LOCK_NOTGRANTED:
  59                 goto dn2entry_retry;
  60         default:
  61                 rs->sr_err = LDAP_OTHER;
  62                 rs->sr_text = "internal error";
  63                 goto return_results;
  64         }
  65
  66         e = ei->bei_e;
  67         if ( rs->sr_err == DB_NOTFOUND ) {
  68                 if ( e != NULL ) {
  69                         rs->sr_matched = ch_strdup( e->e_dn );
  70                         rs->sr_ref = is_entry_referral( e )
  71                                 ? get_entry_referrals( op, e )
  72                                 : NULL;
  73                         bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
  74                         e = NULL;
  75
  76                 } else {
  77                         rs->sr_ref = referral_rewrite( SLAPD_GLOBAL(default_referral),
  78                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  79                 }
  80
  81                 rs->sr_err = LDAP_REFERRAL;
  82                 send_ldap_result( op, rs );
  83
  84                 ber_bvarray_free( rs->sr_ref );
  85                 free( (char *)rs->sr_matched );
  86                 rs->sr_ref = NULL;
  87                 rs->sr_matched = NULL;
  88
  89                 goto done;
  90         }
  91
  92         if (!manageDSAit && is_entry_referral( e ) ) {
  93                 /* entry is a referral, don't allow add */
  94                 rs->sr_ref = get_entry_referrals( op, e );
  95
  96                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  97                         0, 0 );
  98
  99                 rs->sr_err = LDAP_REFERRAL;
 100                 rs->sr_matched = e->e_name.bv_val;
 101                 send_ldap_result( op, rs );
 102
 103                 ber_bvarray_free( rs->sr_ref );
 104                 rs->sr_ref = NULL;
 105                 rs->sr_matched = NULL;
 106                 goto done;
 107         }
 108
 109         if ( get_assert( op ) &&
 110                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 111         {
 112                 rs->sr_err = LDAP_ASSERTION_FAILED;
 113                 goto return_results;
 114         }
 115
 116         rs->sr_err = access_allowed( op, e, op->oq_compare.rs_ava->aa_desc,
 117                 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
 118         if ( ! rs->sr_err ) {
 119                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 120                 goto return_results;
 121         }
 122
 123         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 124
 125         for(a = attrs_find( e->e_attrs, op->oq_compare.rs_ava->aa_desc );
 126                 a != NULL;
 127                 a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ))
 128         {
 129                 rs->sr_err = LDAP_COMPARE_FALSE;
 130
 131                 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
 132                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 133                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 134                         a->a_nvals, &op->oq_compare.rs_ava->aa_value, op->o_tmpmemctx ) == 0 )
 135                 {
 136                         rs->sr_err = LDAP_COMPARE_TRUE;
 137                         break;
 138                 }
 139         }
 140
 141 return_results:
 142         send_ldap_result( op, rs );
 143
 144         if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
 145                 rs->sr_err = LDAP_SUCCESS;
 146         }
 147
 148 done:
 149         /* free entry */
 150         if( e != NULL ) {
 151                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
 152         }
 153
 154         LOCK_ID_FREE ( bdb->bi_dbenv, locker );
 155
 156         return rs->sr_err;
 157 }