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

   1 /* compare.c - ldbm backend compare routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/socket.h>
  13 #include <ac/string.h>
  14
  15 #include "slap.h"
  16 #include "back-ldbm.h"
  17 #include "proto-back-ldbm.h"
  18
  19 int
  20 ldbm_back_compare(
  21         Operation       *op,
  22         SlapReply       *rs )
  23 {
  24         struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
  25         Entry           *matched;
  26         Entry           *e;
  27         Attribute       *a;
  28         int             manageDSAit = get_manageDSAit( op );
  29
  30         /* grab giant lock for reading */
  31         ldap_pvt_thread_rdwr_rlock(&li->li_giant_rwlock);
  32
  33         /* get entry with reader lock */
  34         if ( (e = dn2entry_r( op->o_bd, &op->o_req_ndn, &matched )) == NULL ) {
  35                 if ( matched != NULL ) {
  36                         rs->sr_matched = ch_strdup( matched->e_dn );
  37                         rs->sr_ref = is_entry_referral( matched )
  38                                 ? get_entry_referrals( op, matched )
  39                                 : NULL;
  40                         cache_return_entry_r( &li->li_cache, matched );
  41                 } else {
  42                         rs->sr_ref = referral_rewrite( default_referral,
  43                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  44                 }
  45
  46                 ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
  47
  48                 rs->sr_err = LDAP_REFERRAL;
  49                 send_ldap_result( op, rs );
  50
  51                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  52                 free( (char *)rs->sr_matched );
  53
  54                 return( 1 );
  55         }
  56
  57         if (!manageDSAit && is_entry_referral( e ) ) {
  58                 /* entry is a referral, don't allow add */
  59                 rs->sr_ref = get_entry_referrals( op, e );
  60
  61 #ifdef NEW_LOGGING
  62                 LDAP_LOG( BACK_LDBM, INFO,
  63                         "ldbm_back_compare: entry (%s) is a referral.\n", e->e_dn, 0, 0 );
  64 #else
  65                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  66                     0, 0 );
  67 #endif
  68
  69
  70                 rs->sr_err = LDAP_REFERRAL;
  71                 rs->sr_matched = e->e_name.bv_val;
  72                 send_ldap_result( op, rs );
  73
  74                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  75
  76                 rs->sr_err = 1;
  77                 goto return_results;
  78         }
  79
  80         if ( ! access_allowed( op, e,
  81                 op->oq_compare.rs_ava->aa_desc, &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL ) )
  82         {
  83                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  84                         NULL );
  85                 rs->sr_err = 1;
  86                 goto return_results;
  87         }
  88
  89         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
  90
  91         for(a = attrs_find( e->e_attrs, op->oq_compare.rs_ava->aa_desc );
  92                 a != NULL;
  93                 a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ))
  94         {
  95                 rs->sr_err = LDAP_COMPARE_FALSE;
  96
  97 #ifdef SLAP_NVALUES
  98                 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
  99                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 100                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 101                         a->a_nvals, &op->oq_compare.rs_ava->aa_value ) == 0 )
 102 #else
 103                 if ( value_find( op->oq_compare.rs_ava->aa_desc, a->a_vals, &op->oq_compare.rs_ava->aa_value ) == 0 )
 104 #endif
 105                 {
 106                         rs->sr_err = LDAP_COMPARE_TRUE;
 107                         break;
 108                 }
 109         }
 110
 111         send_ldap_result( op, rs );
 112
 113         if( rs->sr_err != LDAP_NO_SUCH_ATTRIBUTE ) {
 114                 rs->sr_err = 0;
 115         }
 116
 117
 118 return_results:;
 119         cache_return_entry_r( &li->li_cache, e );
 120         ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
 121         return( rs->sr_err );
 122 }