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

   1 /* referral.c - LDBM backend referral handler */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 2000-2003 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/string.h>
  13 #include <ac/socket.h>
  14
  15 #include "slap.h"
  16 #include "back-ldbm.h"
  17
  18 int
  19 ldbm_back_referrals(
  20     Backend     *be,
  21     Connection  *conn,
  22     Operation   *op,
  23     struct berval *dn,
  24     struct berval *ndn,
  25         const char **text )
  26 {
  27         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  28         int rc = LDAP_SUCCESS;
  29         Entry *e, *matched;
  30
  31         if( op->o_tag == LDAP_REQ_SEARCH ) {
  32                 /* let search take care of itself */
  33                 return rc;
  34         }
  35
  36         if( get_manageDSAit( op ) ) {
  37                 /* let op take care of DSA management */
  38                 return rc;
  39         }
  40
  41         /* grab giant lock for reading */
  42         ldap_pvt_thread_rdwr_rlock(&li->li_giant_rwlock);
  43
  44         /* get entry with reader lock */
  45         e = dn2entry_r( be, ndn, &matched );
  46         if ( e == NULL ) {
  47                 char *matched_dn = NULL;
  48                 BerVarray refs = NULL;
  49
  50                 if ( matched != NULL ) {
  51                         matched_dn = ch_strdup( matched->e_dn );
  52
  53 #ifdef NEW_LOGGING
  54                         LDAP_LOG( BACK_LDBM, DETAIL1,
  55                                 "ldbm_back_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  56                                 op->o_tag, dn->bv_val, matched_dn );
  57 #else
  58                         Debug( LDAP_DEBUG_TRACE,
  59                                 "ldbm_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  60                                 op->o_tag, dn->bv_val, matched_dn );
  61 #endif
  62
  63                         if( is_entry_referral( matched ) ) {
  64                                 rc = LDAP_OTHER;
  65                                 refs = get_entry_referrals( be, conn, op, matched );
  66                         }
  67
  68                         cache_return_entry_r( &li->li_cache, matched );
  69
  70                 } else if ( default_referral != NULL ) {
  71                         rc = LDAP_OTHER;
  72                         refs = referral_rewrite( default_referral,
  73                                 NULL, dn, LDAP_SCOPE_DEFAULT );
  74                 }
  75
  76                 ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
  77
  78                 if( refs != NULL ) {
  79                         /* send referrals */
  80                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
  81                                 matched_dn, NULL, refs, NULL );
  82                         ber_bvarray_free( refs );
  83
  84                 } else if ( rc != LDAP_SUCCESS ) {
  85                         send_ldap_result( conn, op, rc, matched_dn,
  86                                 matched_dn ? "bad referral object" : "bad default referral",
  87                                 NULL, NULL );
  88                 }
  89
  90                 if ( matched_dn ) free( matched_dn );
  91                 return rc;
  92         }
  93
  94         if ( is_entry_referral( e ) ) {
  95                 /* entry is a referral */
  96                 BerVarray refs = get_entry_referrals( be, conn, op, e );
  97                 BerVarray rrefs = referral_rewrite(
  98                         refs, &e->e_name, dn, LDAP_SCOPE_DEFAULT );
  99
 100 #ifdef NEW_LOGGING
 101                 LDAP_LOG( BACK_LDBM, DETAIL1,
 102                         "ldbm_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 103                         op->o_tag, dn->bv_val, e->e_dn );
 104 #else
 105                 Debug( LDAP_DEBUG_TRACE,
 106                         "ldbm_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 107                         op->o_tag, dn->bv_val, e->e_dn );
 108 #endif
 109
 110                 if( rrefs != NULL ) {
 111                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 112                                 e->e_dn, NULL, rrefs, NULL );
 113
 114                         ber_bvarray_free( rrefs );
 115
 116                 } else {
 117                         send_ldap_result( conn, op, rc = LDAP_OTHER, e->e_dn,
 118                                 "bad referral object", NULL, NULL );
 119                 }
 120
 121                 if( refs != NULL ) ber_bvarray_free( refs );
 122         }
 123
 124         cache_return_entry_r( &li->li_cache, e );
 125         ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
 126
 127         return rc;
 128 }