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                 rs->sr_matched = NULL;
  79                 if ( e != NULL ) {
  80 #ifdef NEW_LOGGING
  81                         LDAP_LOG ( OPERATION, DETAIL1,
  82                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  83                         (long) op->o_tag, op->o_req_dn.bv_val, rs->sr_matched );
  84 #else
  85                         Debug( LDAP_DEBUG_TRACE,
  86                                 "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  87                                 (long) op->o_tag, op->o_req_dn.bv_val, rs->sr_matched );
  88 #endif
  89
  90                         if( is_entry_referral( e ) ) {
  91                                 rc = LDAP_OTHER;
  92                                 rs->sr_ref = get_entry_referrals( op, e );
  93                                 if ( rs->sr_ref ) {
  94                                         rs->sr_matched = ber_strdup_x(
  95                                         e->e_name.bv_val, op->o_tmpmemctx );
  96                                 }
  97                         }
  98
  99                         bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
 100                         e = NULL;
 101                 } else if ( default_referral != NULL ) {
 102                         rc = LDAP_OTHER;
 103                         rs->sr_ref = referral_rewrite( default_referral,
 104                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 105                 }
 106
 107                 if( rs->sr_ref != NULL ) {
 108                         /* send referrals */
 109                         rs->sr_err = LDAP_REFERRAL;
 110                         send_ldap_result( op, rs );
 111                         ber_bvarray_free( rs->sr_ref );
 112                         rs->sr_ref = NULL;
 113                 } else if ( rc != LDAP_SUCCESS ) {
 114                         rs->sr_err = rc;
 115                         rs->sr_text = rs->sr_matched ? "bad referral object" : NULL;
 116                         send_ldap_result( op, rs );
 117                 }
 118
 119                 LOCK_ID_FREE ( bdb->bi_dbenv, locker );
 120                 if (rs->sr_matched) {
 121                         sl_free( (char *)rs->sr_matched, op->o_tmpmemctx );
 122                         rs->sr_matched = NULL;
 123                 }
 124                 return rc;
 125         }
 126
 127         if ( is_entry_referral( e ) ) {
 128                 /* entry is a referral */
 129                 BerVarray refs = get_entry_referrals( op, e );
 130                 rs->sr_ref = referral_rewrite(
 131                         refs, &e->e_name, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 132
 133 #ifdef NEW_LOGGING
 134                 LDAP_LOG ( OPERATION, DETAIL1,
 135                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 136                         (long) op->o_tag, op->o_req_dn.bv_val, e->e_dn );
 137 #else
 138                 Debug( LDAP_DEBUG_TRACE,
 139                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 140                         (long) op->o_tag, op->o_req_dn.bv_val, e->e_dn );
 141 #endif
 142
 143                 rs->sr_matched = e->e_name.bv_val;
 144                 if( rs->sr_ref != NULL ) {
 145                         rs->sr_err = LDAP_REFERRAL;
 146                         send_ldap_result( op, rs );
 147                         ber_bvarray_free( rs->sr_ref );
 148                         rs->sr_ref = NULL;
 149                 } else {
 150                         send_ldap_error( op, rs, LDAP_OTHER, "bad referral object" );
 151                         rc = rs->sr_err;
 152                 }
 153
 154                 rs->sr_matched = NULL;
 155                 ber_bvarray_free( refs );
 156         }
 157
 158         bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
 159         LOCK_ID_FREE ( bdb->bi_dbenv, locker );
 160         return rc;
 161 }