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openldap  2.4.31
Functions
compare.cpp File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-ndb.h"

Go to the source code of this file.

Functions

int ndb_back_compare (Operation *op, SlapReply *rs)

Function Documentation

int ndb_back_compare ( Operation op,
SlapReply rs 
)

Definition at line 29 of file compare.cpp.

{
       struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private;
       Entry         e = {0};
       Attribute     *a;
       int           manageDSAit = get_manageDSAit( op );

       NdbArgs NA;
       NdbRdns rdns;
       struct berval matched;

       /* Get our NDB handle */
       rs->sr_err = ndb_thread_handle( op, &NA.ndb );

       rdns.nr_num = 0;
       NA.rdns = &rdns;
       e.e_name = op->o_req_dn;
       e.e_nname = op->o_req_ndn;
       NA.e = &e;

dn2entry_retry:
       NA.txn = NA.ndb->startTransaction();
       rs->sr_text = NULL;
       if( !NA.txn ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(ndb_compare) ": startTransaction failed: %s (%d)\n",
                     NA.ndb->getNdbError().message, NA.ndb->getNdbError().code, 0 );
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       NA.ocs = NULL;
       /* get entry */
       rs->sr_err = ndb_entry_get_info( op, &NA, 0, &matched );
       switch( rs->sr_err ) {
       case 0:
              break;
       case LDAP_NO_SUCH_OBJECT:
              rs->sr_matched = matched.bv_val;
              if ( NA.ocs )
                     ndb_check_referral( op, rs, &NA );
              goto return_results;
       case LDAP_BUSY:
              rs->sr_text = "ldap server busy";
              goto return_results;
#if 0
       case DB_LOCK_DEADLOCK:
       case DB_LOCK_NOTGRANTED:
              goto dn2entry_retry;
#endif
       default:
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       rs->sr_err = ndb_entry_get_data( op, &NA, 0 );
       ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx );
       if (!manageDSAit && is_entry_referral( &e ) ) {
              /* return referral only if "disclose" is granted on the object */
              if ( !access_allowed( op, &e, slap_schema.si_ad_entry,
                     NULL, ACL_DISCLOSE, NULL ) )
              {
                     rs->sr_err = LDAP_NO_SUCH_OBJECT;
              } else {
                     /* entry is a referral, don't allow compare */
                     rs->sr_ref = get_entry_referrals( op, &e );
                     rs->sr_err = LDAP_REFERRAL;
                     rs->sr_matched = e.e_name.bv_val;
                     rs->sr_flags |= REP_REF_MUSTBEFREED;
              }

              Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0, 0, 0 );
              goto return_results;
       }

       if ( get_assert( op ) &&
              ( test_filter( op, &e, (Filter *)get_assertion( op )) != LDAP_COMPARE_TRUE ))
       {
              if ( !access_allowed( op, &e, slap_schema.si_ad_entry,
                     NULL, ACL_DISCLOSE, NULL ) )
              {
                     rs->sr_err = LDAP_NO_SUCH_OBJECT;
              } else {
                     rs->sr_err = LDAP_ASSERTION_FAILED;
              }
              goto return_results;
       }

       if ( !access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
              &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL ) )
       {
              /* return error only if "disclose"
               * is granted on the object */
              if ( !access_allowed( op, &e, slap_schema.si_ad_entry,
                                   NULL, ACL_DISCLOSE, NULL ) )
              {
                     rs->sr_err = LDAP_NO_SUCH_OBJECT;
              } else {
                     rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
              }
              goto return_results;
       }

       rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;

       for ( a = attrs_find( e.e_attrs, op->oq_compare.rs_ava->aa_desc );
              a != NULL;
              a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ) )
       {
              rs->sr_err = LDAP_COMPARE_FALSE;

              if ( attr_valfind( a,
                     SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
                            SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
                     &op->oq_compare.rs_ava->aa_value, NULL,
                     op->o_tmpmemctx ) == 0 )
              {
                     rs->sr_err = LDAP_COMPARE_TRUE;
                     break;
              }
       }

return_results:
       NA.txn->close();
       if ( e.e_attrs ) {
              attrs_free( e.e_attrs );
              e.e_attrs = NULL;
       }
       send_ldap_result( op, rs );

       switch ( rs->sr_err ) {
       case LDAP_COMPARE_FALSE:
       case LDAP_COMPARE_TRUE:
              rs->sr_err = LDAP_SUCCESS;
              break;
       }

       return rs->sr_err;
}