/* referral.c - BDB backend referral handler */
/* $OpenLDAP: pkg/ldap/servers/slapd/back-bdb/referral.c,v 1.36.2.6 2007/01/02 21:44:00 kurt Exp $ */
/* This work is part of OpenLDAP Software .
*
* Copyright 2000-2007 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* .
*/
#include "portable.h"
#include
#include
#include "back-bdb.h"
int
bdb_referrals( Operation *op, SlapReply *rs )
{
struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
Entry *e = NULL;
EntryInfo *ei;
int rc = LDAP_SUCCESS;
u_int32_t locker;
DB_LOCK lock;
if( op->o_tag == LDAP_REQ_SEARCH ) {
/* let search take care of itself */
return rc;
}
if( get_manageDSAit( op ) ) {
/* let op take care of DSA management */
return rc;
}
rc = LOCK_ID(bdb->bi_dbenv, &locker);
switch(rc) {
case 0:
break;
default:
return LDAP_OTHER;
}
dn2entry_retry:
/* get entry */
rc = bdb_dn2entry( op, NULL, &op->o_req_ndn, &ei, 1, locker, &lock );
/* bdb_dn2entry() may legally leave ei == NULL
* if rc != 0 and rc != DB_NOTFOUND
*/
if ( ei ) {
e = ei->bei_e;
}
switch(rc) {
case DB_NOTFOUND:
case 0:
break;
case LDAP_BUSY:
send_ldap_error( op, rs, LDAP_BUSY, "ldap server busy" );
LOCK_ID_FREE ( bdb->bi_dbenv, locker );
return LDAP_BUSY;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto dn2entry_retry;
default:
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(bdb_referrals)
": dn2entry failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
LOCK_ID_FREE ( bdb->bi_dbenv, locker );
return rs->sr_err;
}
if ( rc == DB_NOTFOUND ) {
rc = 0;
rs->sr_matched = NULL;
if ( e != NULL ) {
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(bdb_referrals)
": op=%ld target=\"%s\" matched=\"%s\"\n",
(long) op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val );
if( is_entry_referral( e ) ) {
BerVarray ref = get_entry_referrals( op, e );
rc = LDAP_OTHER;
rs->sr_ref = referral_rewrite( ref, NULL,
&op->o_req_dn, LDAP_SCOPE_DEFAULT );
ber_bvarray_free( ref );
if ( rs->sr_ref ) {
rs->sr_matched = ber_strdup_x(
e->e_name.bv_val, op->o_tmpmemctx );
}
}
bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
e = NULL;
} else if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) && default_referral != NULL ) {
rc = LDAP_OTHER;
rs->sr_ref = referral_rewrite( default_referral,
NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
}
if( rs->sr_ref != NULL ) {
/* send referrals */
rc = rs->sr_err = LDAP_REFERRAL;
send_ldap_result( op, rs );
ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
} else if ( rc != LDAP_SUCCESS ) {
rs->sr_err = rc;
rs->sr_text = rs->sr_matched ? "bad referral object" : NULL;
send_ldap_result( op, rs );
}
LOCK_ID_FREE ( bdb->bi_dbenv, locker );
if (rs->sr_matched) {
op->o_tmpfree( (char *)rs->sr_matched, op->o_tmpmemctx );
rs->sr_matched = NULL;
}
return rc;
}
if ( is_entry_referral( e ) ) {
/* entry is a referral */
BerVarray refs = get_entry_referrals( op, e );
rs->sr_ref = referral_rewrite(
refs, &e->e_name, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(bdb_referrals)
": op=%ld target=\"%s\" matched=\"%s\"\n",
(long) op->o_tag, op->o_req_dn.bv_val, e->e_name.bv_val );
rs->sr_matched = e->e_name.bv_val;
if( rs->sr_ref != NULL ) {
rc = rs->sr_err = LDAP_REFERRAL;
send_ldap_result( op, rs );
ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
} else {
send_ldap_error( op, rs, LDAP_OTHER, "bad referral object" );
rc = rs->sr_err;
}
rs->sr_matched = NULL;
ber_bvarray_free( refs );
}
bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
LOCK_ID_FREE ( bdb->bi_dbenv, locker );
return rc;
}