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 1998-2005 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         int             rc = LDAP_SUCCESS;
  35
  36         if( op->o_tag == LDAP_REQ_SEARCH ) {
  37                 /* let search take care of itself */
  38                 return LDAP_SUCCESS;
  39         }
  40
  41         if( get_manageDSAit( op ) ) {
  42                 /* let op take care of DSA management */
  43                 return LDAP_SUCCESS;
  44         }
  45
  46         /* grab giant lock for reading */
  47         ldap_pvt_thread_rdwr_rlock(&li->li_giant_rwlock);
  48
  49         /* get entry with reader lock */
  50         e = dn2entry_r( op->o_bd, &op->o_req_ndn, &matched );
  51         if ( e == NULL ) {
  52                 if ( matched != NULL ) {
  53                         rs->sr_matched = ch_strdup( matched->e_dn );
  54
  55                         Debug( LDAP_DEBUG_TRACE,
  56                                 "ldbm_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  57                                 op->o_tag, op->o_req_dn.bv_val, rs->sr_matched );
  58
  59                         if ( is_entry_referral( matched ) ) {
  60                                 rc = rs->sr_err = LDAP_OTHER;
  61                                 rs->sr_ref = get_entry_referrals( op, matched );
  62                         }
  63
  64                         cache_return_entry_r( &li->li_cache, matched );
  65
  66                 } else if ( default_referral != NULL ) {
  67                         rc = rs->sr_err = LDAP_OTHER;
  68                         rs->sr_ref = referral_rewrite( default_referral,
  69                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  70                 }
  71
  72                 ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
  73
  74                 if ( rs->sr_ref != NULL ) {
  75                         /* send referrals */
  76                         rc = rs->sr_err = LDAP_REFERRAL;
  77
  78                 } else {
  79                         rs->sr_text = rs->sr_matched ? "bad referral object" : "bad default referral";
  80                 }
  81
  82                 if ( rc != LDAP_SUCCESS ) {
  83                         send_ldap_result( op, rs );
  84                 }
  85
  86                 if ( rs->sr_matched ) free( (char *)rs->sr_matched );
  87                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  88                 rs->sr_text = NULL;
  89                 rs->sr_ref = NULL;
  90                 rs->sr_matched = NULL;
  91
  92                 return rc;
  93         }
  94
  95         if ( is_entry_referral( e ) ) {
  96                 /* entry is a referral */
  97                 BerVarray refs = get_entry_referrals( op, e );
  98                 rs->sr_ref = referral_rewrite(
  99                         refs, &e->e_name, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 100
 101                 Debug( LDAP_DEBUG_TRACE,
 102                         "ldbm_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 103                         op->o_tag, op->o_req_dn.bv_val, e->e_dn );
 104
 105                 rs->sr_matched = e->e_name.bv_val;
 106                 if( rs->sr_ref != NULL ) {
 107                         rc = rs->sr_err = LDAP_REFERRAL;
 108                         rs->sr_text = NULL;
 109
 110                 } else {
 111                         rc = rs->sr_err = LDAP_OTHER;
 112                         rs->sr_text = "bad referral object";
 113                 }
 114                 send_ldap_result( op, rs );
 115
 116                 if ( refs != NULL ) ber_bvarray_free( refs );
 117                 rs->sr_err = rc;
 118                 rs->sr_ref = NULL;
 119                 rs->sr_text = NULL;
 120                 rs->sr_matched = NULL;
 121         }
 122
 123         cache_return_entry_r( &li->li_cache, e );
 124         ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
 125
 126         return rc;
 127 }