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

   1 /* referral.c - BDB backend referral handler */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 2000-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9 #include <stdio.h>
  10 #include <ac/string.h>
  11
  12 #include "back-bdb.h"
  13 #include "external.h"
  14
  15 int
  16 bdb_referrals(
  17         BackendDB       *be,
  18         Connection      *conn,
  19         Operation       *op,
  20         struct berval *dn,
  21         struct berval *ndn,
  22         const char **text )
  23 {
  24         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  25         int rc = LDAP_SUCCESS;
  26         Entry *e = NULL;
  27         Entry *matched = NULL;
  28
  29         if( op->o_tag == LDAP_REQ_SEARCH ) {
  30                 /* let search take care of itself */
  31                 return rc;
  32         }
  33
  34         if( get_manageDSAit( op ) ) {
  35                 /* let op take care of DSA management */
  36                 return rc;
  37         }
  38
  39         /* get entry */
  40         rc = bdb_dn2entry_r( be, NULL, ndn, &e, &matched, 0 );
  41
  42         switch(rc) {
  43         case DB_NOTFOUND:
  44                 rc = 0;
  45         case 0:
  46                 break;
  47         case LDAP_BUSY:
  48                 if (e != NULL) {
  49                         bdb_cache_return_entry_r(&bdb->bi_cache, e);
  50                 }
  51                 if (matched != NULL) {
  52                         bdb_cache_return_entry_r(&bdb->bi_cache, matched);
  53                 }
  54                 send_ldap_result( conn, op, LDAP_BUSY,
  55                         NULL, "ldap server busy", NULL, NULL );
  56                 return LDAP_BUSY;
  57         default:
  58 #ifdef NEW_LOGGING
  59                 LDAP_LOG (( "referral", LDAP_LEVEL_ERR,
  60                         "bdb_referrals: dn2entry failed: %s (%d)\n",
  61                         db_strerror(rc), rc ));
  62 #else
  63                 Debug( LDAP_DEBUG_TRACE,
  64                         "bdb_referrals: dn2entry failed: %s (%d)\n",
  65                         db_strerror(rc), rc, 0 );
  66 #endif
  67                 if (e != NULL) {
  68                         bdb_cache_return_entry_r(&bdb->bi_cache, e);
  69                 }
  70                 if (matched != NULL) {
  71                         bdb_cache_return_entry_r(&bdb->bi_cache, matched);
  72                 }
  73                 send_ldap_result( conn, op, rc=LDAP_OTHER,
  74                         NULL, "internal error", NULL, NULL );
  75                 return rc;
  76         }
  77
  78         if ( e == NULL ) {
  79                 char *matched_dn = NULL;
  80                 BerVarray refs = NULL;
  81
  82                 if ( matched != NULL ) {
  83                         matched_dn = ch_strdup( matched->e_dn );
  84
  85 #ifdef NEW_LOGGING
  86                 LDAP_LOG (( "referral", LDAP_LEVEL_DETAIL1,
  87                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  88                         (long) op->o_tag, dn->bv_val, matched_dn ));
  89 #else
  90                         Debug( LDAP_DEBUG_TRACE,
  91                                 "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  92                                 (long) op->o_tag, dn->bv_val, matched_dn );
  93 #endif
  94
  95                         if( is_entry_referral( matched ) ) {
  96                                 rc = LDAP_OTHER;
  97                                 refs = get_entry_referrals( be, conn, op, matched );
  98                         }
  99
 100                         bdb_cache_return_entry_r (&bdb->bi_cache, matched);
 101                         matched = NULL;
 102                 } else if ( default_referral != NULL ) {
 103                         rc = LDAP_OTHER;
 104                         refs = referral_rewrite( default_referral,
 105                                 NULL, dn, LDAP_SCOPE_DEFAULT );
 106                 }
 107
 108                 if( refs != NULL ) {
 109                         /* send referrals */
 110                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 111                                 matched_dn, NULL, refs, NULL );
 112                         ber_bvarray_free( refs );
 113                 } else if ( rc != LDAP_SUCCESS ) {
 114                         send_ldap_result( conn, op, rc, matched_dn,
 115                                 matched_dn ? "bad referral object" : NULL,
 116                                 NULL, NULL );
 117                 }
 118
 119                 free( matched_dn );
 120                 return rc;
 121         }
 122
 123         if ( is_entry_referral( e ) ) {
 124                 /* entry is a referral */
 125                 BerVarray refs = get_entry_referrals( be, conn, op, e );
 126                 BerVarray rrefs = referral_rewrite(
 127                         refs, &e->e_name, dn, LDAP_SCOPE_DEFAULT );
 128
 129 #ifdef NEW_LOGGING
 130                 LDAP_LOG (( "referral", LDAP_LEVEL_DETAIL1,
 131                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 132                         (long) op->o_tag, dn->bv_val, e->e_dn ));
 133 #else
 134                 Debug( LDAP_DEBUG_TRACE,
 135                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 136                         (long) op->o_tag, dn->bv_val, e->e_dn );
 137 #endif
 138
 139                 if( rrefs != NULL ) {
 140                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 141                                 e->e_dn, NULL, rrefs, NULL );
 142                         ber_bvarray_free( rrefs );
 143                 } else {
 144                         send_ldap_result( conn, op, rc = LDAP_OTHER, e->e_dn,
 145                                 "bad referral object", NULL, NULL );
 146                 }
 147
 148                 ber_bvarray_free( refs );
 149         }
 150
 151         bdb_cache_return_entry_r(&bdb->bi_cache, e);
 152         return rc;
 153 }