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, NULL, &op->o_req_ndn, &ei, 1, locker, &lock );
  47
  48         e = ei->bei_e;
  49         switch(rc) {
  50         case DB_NOTFOUND:
  51         case 0:
  52                 break;
  53         case LDAP_BUSY:
  54                 send_ldap_error( op, rs, LDAP_BUSY, "ldap server busy" );
  55                 LOCK_ID_FREE ( bdb->bi_dbenv, locker );
  56                 return LDAP_BUSY;
  57         case DB_LOCK_DEADLOCK:
  58         case DB_LOCK_NOTGRANTED:
  59                 goto dn2entry_retry;
  60         default:
  61 #ifdef NEW_LOGGING
  62                 LDAP_LOG ( OPERATION, ERR,
  63                         "bdb_referrals: dn2entry failed: %s (%d)\n",
  64                         db_strerror(rc), rc, 0 );
  65 #else
  66                 Debug( LDAP_DEBUG_TRACE,
  67                         "bdb_referrals: dn2entry failed: %s (%d)\n",
  68                         db_strerror(rc), rc, 0 );
  69 #endif
  70                 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
  71                 LOCK_ID_FREE ( bdb->bi_dbenv, locker );
  72                 return rs->sr_err;
  73         }
  74
  75         if ( rc == DB_NOTFOUND ) {
  76                 rc = 0;
  77                 rs->sr_matched = NULL;
  78                 if ( e != NULL ) {
  79 #ifdef NEW_LOGGING
  80                         LDAP_LOG ( OPERATION, DETAIL1,
  81                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  82                         (long) op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val );
  83 #else
  84                         Debug( LDAP_DEBUG_TRACE,
  85                                 "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
  86                                 (long) op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val );
  87 #endif
  88
  89                         if( is_entry_referral( e ) ) {
  90                                 rc = LDAP_OTHER;
  91                                 rs->sr_ref = get_entry_referrals( op, e );
  92                                 if ( rs->sr_ref ) {
  93                                         rs->sr_matched = ber_strdup_x(
  94                                         e->e_name.bv_val, op->o_tmpmemctx );
  95                                 }
  96                         }
  97
  98                         bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
  99                         e = NULL;
 100                 } else if ( default_referral != NULL ) {
 101                         rc = LDAP_OTHER;
 102                         rs->sr_ref = referral_rewrite( default_referral,
 103                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 104                 }
 105
 106                 if( rs->sr_ref != NULL ) {
 107                         /* send referrals */
 108                         rs->sr_err = LDAP_REFERRAL;
 109                         send_ldap_result( op, rs );
 110                         ber_bvarray_free( rs->sr_ref );
 111                         rs->sr_ref = NULL;
 112                 } else if ( rc != LDAP_SUCCESS ) {
 113                         rs->sr_err = rc;
 114                         rs->sr_text = rs->sr_matched ? "bad referral object" : NULL;
 115                         send_ldap_result( op, rs );
 116                 }
 117
 118                 LOCK_ID_FREE ( bdb->bi_dbenv, locker );
 119                 if (rs->sr_matched) {
 120                         op->o_tmpfree( (char *)rs->sr_matched, op->o_tmpmemctx );
 121                         rs->sr_matched = NULL;
 122                 }
 123                 return rc;
 124         }
 125
 126         if ( is_entry_referral( e ) ) {
 127                 /* entry is a referral */
 128                 BerVarray refs = get_entry_referrals( op, e );
 129                 rs->sr_ref = referral_rewrite(
 130                         refs, &e->e_name, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 131
 132 #ifdef NEW_LOGGING
 133                 LDAP_LOG ( OPERATION, DETAIL1,
 134                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 135                         (long) op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val );
 136 #else
 137                 Debug( LDAP_DEBUG_TRACE,
 138                         "bdb_referrals: op=%ld target=\"%s\" matched=\"%s\"\n",
 139                         (long) op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val );
 140 #endif
 141
 142                 rs->sr_matched = e->e_name.bv_val;
 143                 if( rs->sr_ref != NULL ) {
 144                         rs->sr_err = LDAP_REFERRAL;
 145                         send_ldap_result( op, rs );
 146                         ber_bvarray_free( rs->sr_ref );
 147                         rs->sr_ref = NULL;
 148                 } else {
 149                         send_ldap_error( op, rs, LDAP_OTHER, "bad referral object" );
 150                         rc = rs->sr_err;
 151                 }
 152
 153                 rs->sr_matched = NULL;
 154                 ber_bvarray_free( refs );
 155         }
 156
 157         bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
 158         LOCK_ID_FREE ( bdb->bi_dbenv, locker );
 159         return rc;
 160 }