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/* referral.c - MDB backend referral handler */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2000-2021 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
* <http://www.OpenLDAP.org/license.html>.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-mdb.h"
int
mdb_referrals( Operation *op, SlapReply *rs )
{
struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
Entry *e = NULL;
int rc = LDAP_SUCCESS;
MDB_txn *rtxn;
mdb_op_info opinfo = {0}, *moi = &opinfo;
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 = mdb_opinfo_get(op, mdb, 1, &moi);
switch(rc) {
case 0:
break;
default:
return LDAP_OTHER;
}
rtxn = moi->moi_txn;
/* get entry */
rc = mdb_dn2entry( op, rtxn, &op->o_req_ndn, &e, 1 );
switch(rc) {
case MDB_NOTFOUND:
case 0:
break;
case LDAP_BUSY:
rs->sr_text = "ldap server busy";
goto done;
default:
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(mdb_referrals)
": dn2entry failed: %s (%d)\n",
mdb_strerror(rc), rc, 0 );
rs->sr_text = "internal error";
rc = LDAP_OTHER;
goto done;
}
if ( rc == MDB_NOTFOUND ) {
rc = LDAP_SUCCESS;
rs->sr_matched = NULL;
if ( e != NULL ) {
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(mdb_referrals)
": tag=%lu target=\"%s\" matched=\"%s\"\n",
(unsigned 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, &e->e_name,
&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 );
}
}
mdb_entry_return( op, e );
e = NULL;
}
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_text = rs->sr_matched ? "bad referral object" : NULL;
}
if (rs->sr_matched) {
op->o_tmpfree( (char *)rs->sr_matched, op->o_tmpmemctx );
rs->sr_matched = NULL;
}
goto done;
}
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(mdb_referrals)
": tag=%lu target=\"%s\" matched=\"%s\"\n",
(unsigned 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 {
rc = LDAP_OTHER;
rs->sr_text = "bad referral object";
}
rs->sr_matched = NULL;
ber_bvarray_free( refs );
}
done:
if ( moi == &opinfo ) {
mdb_txn_reset( moi->moi_txn );
LDAP_SLIST_REMOVE( &op->o_extra, &moi->moi_oe, OpExtra, oe_next );
} else {
moi->moi_ref--;
}
if ( e )
mdb_entry_return( op, e );
return rc;
}
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