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

   1 /* referral.c - BDB backend referral handler */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 2000-2003 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( Operation *op, SlapReply *rs )
  17 {
  18         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  19         Entry *e = NULL;
  20         EntryInfo *ei;
  21         int rc = LDAP_SUCCESS;
  22
  23         u_int32_t       locker;
  24         DB_LOCK         lock;
  25
  26         if( op->o_tag == LDAP_REQ_SEARCH ) {
  27                 /* let search take care of itself */
  28                 return rc;
  29         }
  30
  31         if( get_manageDSAit( op ) ) {
  32                 /* let op take care of DSA management */
  33                 return rc;
  34         }
  35
  36         rc = LOCK_ID(bdb->bi_dbenv, &locker);
  37         switch(rc) {
  38         case 0:
  39                 break;
  40         default:
  41                 return LDAP_OTHER;
  42         }
  43
  44 dn2entry_retry:
  45         /* get entry */
  46         rc = bdb_dn2entry( op->o_bd, NULL, &op->o_req_ndn, &ei, 1, locker,
  47                 &lock, op->o_tmpmemctx );
  48
  49         e = ei->bei_e;
  50         switch(rc) {
  51         case DB_NOTFOUND:
  52         case 0:
  53                 break;
  54         case LDAP_BUSY:
  55                 send_ldap_error( op, rs, LDAP_BUSY, "ldap server busy" );
  56                 LOCK_ID_FREE ( bdb->bi_dbenv, locker );
  57                 return LDAP_BUSY;
  58         case DB_LOCK_DEADLOCK:
  59         case DB_LOCK_NOTGRANTED:
  60                 goto dn2entry_retry;
  61         default:
  62 #ifdef NEW_LOGGING
  63                 LDAP_LOG ( OPERATION, ERR,
  64                         "bdb_referrals: dn2entry failed: %s (%d)\n",
  65                         db_strerror(rc), rc, 0 );
  66 #else
  67                 Debug( LDAP_DEBUG_TRACE,
  68                         "bdb_referrals: dn2entry failed: %s (%d)\n",
  69                         db_strerror(rc), rc, 0 );
  70 #endif
  71                 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
  72                 LOCK_ID_FREE ( bdb->bi_dbenv, locker );
  73                 return rs->sr_err;
  74         }
  75
  76         if ( rc == DB_NOTFOUND ) {
  77                 rc = 0;
  78                 if ( e != NULL ) {
  79                         rs->sr_matched = ch_strdup( e->e_name.bv_val );
  80
  81 #ifdef NEW_LOGGING
  82                 LDAP_LOG ( OPERATION, DETAIL1,
  83                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  84                         (long) op->o_tag, op->o_req_dn.bv_val, rs->sr_matched );
  85 #else
  86                         Debug( LDAP_DEBUG_TRACE,
  87                                 "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  88                                 (long) op->o_tag, op->o_req_dn.bv_val, rs->sr_matched );
  89 #endif
  90
  91                         if( is_entry_referral( e ) ) {
  92                                 rc = LDAP_OTHER;
  93                                 rs->sr_ref = get_entry_referrals( op, e );
  94                         }
  95
  96                         bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
  97                         e = NULL;
  98                 } else if ( default_referral != NULL ) {
  99                         rc = LDAP_OTHER;
 100                         rs->sr_ref = referral_rewrite( default_referral,
 101                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 102                 }
 103
 104                 if( rs->sr_ref != NULL ) {
 105                         /* send referrals */
 106                         rs->sr_err = LDAP_REFERRAL;
 107                         send_ldap_result( op, rs );
 108                         ber_bvarray_free( rs->sr_ref );
 109                         rs->sr_ref = NULL;
 110                 } else if ( rc != LDAP_SUCCESS ) {
 111                         rs->sr_err = rc;
 112                         rs->sr_text = rs->sr_matched ? "bad referral object" : NULL;
 113                         send_ldap_result( op, rs );
 114                 }
 115
 116                 LOCK_ID_FREE ( bdb->bi_dbenv, locker );
 117                 free( (char *)rs->sr_matched );
 118                 rs->sr_matched = NULL;
 119                 return rc;
 120         }
 121
 122         if ( is_entry_referral( e ) ) {
 123                 /* entry is a referral */
 124                 BerVarray refs = get_entry_referrals( op, e );
 125                 rs->sr_ref = referral_rewrite(
 126                         refs, &e->e_name, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 127
 128 #ifdef NEW_LOGGING
 129                 LDAP_LOG ( OPERATION, DETAIL1,
 130                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 131                         (long) op->o_tag, op->o_req_dn.bv_val, e->e_dn );
 132 #else
 133                 Debug( LDAP_DEBUG_TRACE,
 134                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 135                         (long) op->o_tag, op->o_req_dn.bv_val, e->e_dn );
 136 #endif
 137
 138                 rs->sr_matched = e->e_name.bv_val;
 139                 if( rs->sr_ref != NULL ) {
 140                         rs->sr_err = LDAP_REFERRAL;
 141                         send_ldap_result( op, rs );
 142                         ber_bvarray_free( rs->sr_ref );
 143                         rs->sr_ref = NULL;
 144                 } else {
 145                         send_ldap_error( op, rs, LDAP_OTHER, "bad referral object" );
 146                         rc = rs->sr_err;
 147                 }
 148
 149                 rs->sr_matched = NULL;
 150                 ber_bvarray_free( refs );
 151         }
 152
 153         bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
 154         LOCK_ID_FREE ( bdb->bi_dbenv, locker );
 155         return rc;
 156 }