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

   1 /* referral.c - LDBM backend referral handler */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2004 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
  21 #include <ac/string.h>
  22 #include <ac/socket.h>
  23
  24 #include "slap.h"
  25 #include "back-ldbm.h"
  26
  27 int
  28 ldbm_back_referrals(
  29     Operation   *op,
  30     SlapReply   *rs )
  31 {
  32         struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
  33         Entry *e, *matched;
  34
  35         if( op->o_tag == LDAP_REQ_SEARCH ) {
  36                 /* let search take care of itself */
  37                 return LDAP_SUCCESS;
  38         }
  39
  40         if( get_manageDSAit( op ) ) {
  41                 /* let op take care of DSA management */
  42                 return LDAP_SUCCESS;
  43         }
  44
  45         /* grab giant lock for reading */
  46         ldap_pvt_thread_rdwr_rlock(&li->li_giant_rwlock);
  47
  48         /* get entry with reader lock */
  49         e = dn2entry_r( op->o_bd, &op->o_req_ndn, &matched );
  50         if ( e == NULL ) {
  51                 if ( matched != NULL ) {
  52                         rs->sr_matched = ch_strdup( matched->e_dn );
  53
  54 #ifdef NEW_LOGGING
  55                         LDAP_LOG( BACK_LDBM, DETAIL1,
  56                                 "ldbm_back_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  57                                 op->o_tag, op->o_req_dn.bv_val, rs->sr_matched );
  58 #else
  59                         Debug( LDAP_DEBUG_TRACE,
  60                                 "ldbm_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  61                                 op->o_tag, op->o_req_dn.bv_val, rs->sr_matched );
  62 #endif
  63
  64                         if( is_entry_referral( matched ) ) {
  65                                 rs->sr_err = LDAP_OTHER;
  66                                 rs->sr_ref = get_entry_referrals( op, matched );
  67                         }
  68
  69                         cache_return_entry_r( &li->li_cache, matched );
  70
  71                 } else if ( default_referral != NULL ) {
  72                         rs->sr_err = LDAP_OTHER;
  73                         rs->sr_ref = referral_rewrite( default_referral,
  74                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  75                 }
  76
  77                 ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
  78
  79                 if( rs->sr_ref != NULL ) {
  80                         /* send referrals */
  81                         rs->sr_err = LDAP_REFERRAL;
  82                         send_ldap_result( op, rs );
  83                         ber_bvarray_free( rs->sr_ref );
  84
  85                 } else if ( rs->sr_err != LDAP_SUCCESS ) {
  86                         rs->sr_text = rs->sr_matched ? "bad referral object" : "bad default referral";
  87                         send_ldap_result( op, rs );
  88                 }
  89
  90                 if ( rs->sr_matched ) free( (char *)rs->sr_matched );
  91                 rs->sr_ref = NULL;
  92                 rs->sr_matched = NULL;
  93                 return rs->sr_err;
  94         }
  95
  96         if ( is_entry_referral( e ) ) {
  97                 /* entry is a referral */
  98                 BerVarray refs = get_entry_referrals( op, e );
  99                 rs->sr_ref = referral_rewrite(
 100                         refs, &e->e_name, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 101
 102 #ifdef NEW_LOGGING
 103                 LDAP_LOG( BACK_LDBM, DETAIL1,
 104                         "ldbm_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 105                         op->o_tag, op->o_req_dn.bv_val, e->e_dn );
 106 #else
 107                 Debug( LDAP_DEBUG_TRACE,
 108                         "ldbm_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 109                         op->o_tag, op->o_req_dn.bv_val, e->e_dn );
 110 #endif
 111
 112                 rs->sr_matched = e->e_name.bv_val;
 113                 if( rs->sr_ref != NULL ) {
 114                         rs->sr_err = LDAP_REFERRAL;
 115                         send_ldap_result( op, rs );
 116
 117                         ber_bvarray_free( rs->sr_ref );
 118
 119                 } else {
 120                         send_ldap_error( op, rs, LDAP_OTHER,
 121                                 "bad referral object" );
 122                 }
 123
 124                 if( refs != NULL ) ber_bvarray_free( refs );
 125                 rs->sr_ref = NULL;
 126                 rs->sr_matched = NULL;
 127         }
 128
 129         cache_return_entry_r( &li->li_cache, e );
 130         ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
 131
 132         return rs->sr_err;
 133 }