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675 lines
12 KiB
C
675 lines
12 KiB
C
/* op.c - relay backend operations */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2004-2007 The OpenLDAP Foundation.
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* Portions Copyright 2004 Pierangelo Masarati.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/* ACKNOWLEDGEMENTS:
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* This work was initially developed by Pierangelo Masarati for inclusion
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* in OpenLDAP Software.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include "slap.h"
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#include "back-relay.h"
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static int
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relay_back_swap_bd( Operation *op, SlapReply *rs )
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{
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slap_callback *cb = op->o_callback;
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BackendDB *be = op->o_bd;
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op->o_bd = cb->sc_private;
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cb->sc_private = be;
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return SLAP_CB_CONTINUE;
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}
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static void
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relay_back_add_cb( slap_callback *cb, Operation *op )
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{
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cb->sc_next = op->o_callback;
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cb->sc_response = relay_back_swap_bd;
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cb->sc_cleanup = relay_back_swap_bd;
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cb->sc_private = op->o_bd;
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op->o_callback = cb;
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}
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/*
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* selects the backend if not enforced at config;
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* in case of failure, behaves based on err:
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* -1 don't send result
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* LDAP_SUCCESS don't send result; may send referral
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* any valid error send as error result
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*/
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static BackendDB *
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relay_back_select_backend( Operation *op, SlapReply *rs, int err )
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{
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relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
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BackendDB *bd = ri->ri_bd;
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if ( bd == NULL ) {
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bd = select_backend( &op->o_req_ndn, 0, 1 );
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if ( bd == op->o_bd ) {
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if ( err > LDAP_SUCCESS ) {
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send_ldap_error( op, rs,
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LDAP_UNWILLING_TO_PERFORM,
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"back-relay would call self" );
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}
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return NULL;
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}
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}
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if ( bd == NULL && err > -1 ) {
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if ( default_referral ) {
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rs->sr_ref = referral_rewrite( default_referral,
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NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
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if ( !rs->sr_ref ) {
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rs->sr_ref = default_referral;
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}
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rs->sr_err = LDAP_REFERRAL;
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send_ldap_result( op, rs );
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if ( rs->sr_ref != default_referral ) {
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ber_bvarray_free( rs->sr_ref );
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}
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} else {
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/* NOTE: err is LDAP_INVALID_CREDENTIALS for bind,
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* LDAP_NO_SUCH_OBJECT for other operations.
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* noSuchObject cannot be returned by bind */
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rs->sr_err = err;
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send_ldap_result( op, rs );
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}
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}
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return bd;
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}
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int
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relay_back_op_bind( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_INVALID_CREDENTIALS );
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if ( bd == NULL ) {
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return rc;
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}
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if ( bd->be_bind ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_bind )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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} else {
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"operation not supported "
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"within naming context" );
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}
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return rc;
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}
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int
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relay_back_op_unbind( Operation *op, SlapReply *rs )
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{
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relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
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BackendDB *bd;
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int rc = 1;
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bd = ri->ri_bd;
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if ( bd == NULL ) {
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bd = select_backend( &op->o_req_ndn, 0, 1 );
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}
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if ( bd && bd->be_unbind ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_unbind )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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}
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return 0;
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}
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int
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relay_back_op_search( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_search ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_search )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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} else {
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"operation not supported "
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"within naming context" );
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}
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return rc;
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}
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int
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relay_back_op_compare( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_compare ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_compare )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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} else {
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"operation not supported "
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"within naming context" );
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}
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return rc;
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}
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int
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relay_back_op_modify( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_modify ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_modify )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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} else {
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"operation not supported "
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"within naming context" );
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}
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return rc;
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}
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int
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relay_back_op_modrdn( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_modrdn ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_modrdn )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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} else {
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"operation not supported "
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"within naming context" );
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}
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return rc;
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}
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int
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relay_back_op_add( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_add ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_add )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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} else {
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"operation not supported "
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"within naming context" );
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}
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return rc;
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}
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int
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relay_back_op_delete( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_delete ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_delete )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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}
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return rc;
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}
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int
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relay_back_op_abandon( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, -1 );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_abandon ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_abandon )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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}
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return rc;
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}
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int
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relay_back_op_cancel( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_cancel ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_cancel )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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} else {
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"operation not supported "
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"within naming context" );
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}
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return rc;
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}
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int
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relay_back_op_extended( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 1;
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bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
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if ( bd == NULL ) {
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return 1;
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}
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if ( bd->be_extended ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_extended )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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} else {
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send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
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"operation not supported "
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"within naming context" );
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}
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return rc;
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}
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int
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relay_back_entry_release_rw( Operation *op, Entry *e, int rw )
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{
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relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
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BackendDB *bd;
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int rc = 1;
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bd = ri->ri_bd;
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if ( bd == NULL) {
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bd = select_backend( &op->o_req_ndn, 0, 1 );
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if ( bd == NULL ) {
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return 1;
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}
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}
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if ( bd->be_release ) {
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BackendDB *be = op->o_bd;
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op->o_bd = bd;
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rc = ( bd->be_release )( op, e, rw );
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op->o_bd = be;
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}
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return rc;
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}
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int
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relay_back_entry_get_rw( Operation *op, struct berval *ndn,
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ObjectClass *oc, AttributeDescription *at, int rw, Entry **e )
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{
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relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
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BackendDB *bd;
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int rc = 1;
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bd = ri->ri_bd;
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if ( bd == NULL) {
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bd = select_backend( &op->o_req_ndn, 0, 1 );
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if ( bd == NULL ) {
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return 1;
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}
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}
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if ( bd->be_fetch ) {
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BackendDB *be = op->o_bd;
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op->o_bd = bd;
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rc = ( bd->be_fetch )( op, ndn, oc, at, rw, e );
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op->o_bd = be;
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}
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return rc;
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}
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/*
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* NOTE: even the existence of this function is questionable: we cannot
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* pass the bi_chk_referrals() call thru the rwm overlay because there
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* is no way to rewrite the req_dn back; but then relay_back_chk_referrals()
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* is passing the target database a DN that likely does not belong to its
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* naming context... mmmh.
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*/
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int
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relay_back_chk_referrals( Operation *op, SlapReply *rs )
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{
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BackendDB *bd;
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int rc = 0;
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bd = relay_back_select_backend( op, rs, LDAP_SUCCESS );
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/* FIXME: this test only works if there are no overlays, so
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* it is nearly useless; if made stricter, no nested back-relays
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* can be instantiated... too bad. */
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if ( bd == NULL || bd == op->o_bd ) {
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return 0;
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}
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/* no nested back-relays... */
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if ( overlay_is_over( bd ) ) {
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slap_overinfo *oi = (slap_overinfo *)bd->bd_info->bi_private;
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if ( oi->oi_orig == op->o_bd->bd_info ) {
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return 0;
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}
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}
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if ( bd->be_chk_referrals ) {
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BackendDB *be = op->o_bd;
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slap_callback cb;
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relay_back_add_cb( &cb, op );
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op->o_bd = bd;
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rc = ( bd->be_chk_referrals )( op, rs );
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op->o_bd = be;
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if ( op->o_callback == &cb ) {
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op->o_callback = op->o_callback->sc_next;
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}
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}
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return rc;
|
|
|
|
}
|
|
|
|
int
|
|
relay_back_operational( Operation *op, SlapReply *rs )
|
|
{
|
|
relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
|
|
BackendDB *bd;
|
|
int rc = 1;
|
|
|
|
bd = ri->ri_bd;
|
|
if ( bd == NULL) {
|
|
bd = select_backend( &op->o_req_ndn, 0, 1 );
|
|
if ( bd == NULL ) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if ( bd->be_operational ) {
|
|
BackendDB *be = op->o_bd;
|
|
slap_callback cb;
|
|
|
|
relay_back_add_cb( &cb, op );
|
|
|
|
op->o_bd = bd;
|
|
rc = ( bd->be_operational )( op, rs );
|
|
op->o_bd = be;
|
|
|
|
if ( op->o_callback == &cb ) {
|
|
op->o_callback = op->o_callback->sc_next;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
int
|
|
relay_back_has_subordinates( Operation *op, Entry *e, int *hasSubs )
|
|
{
|
|
relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
|
|
BackendDB *bd;
|
|
int rc = 1;
|
|
|
|
bd = ri->ri_bd;
|
|
if ( bd == NULL) {
|
|
bd = select_backend( &op->o_req_ndn, 0, 1 );
|
|
if ( bd == NULL ) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if ( bd->be_has_subordinates ) {
|
|
BackendDB *be = op->o_bd;
|
|
|
|
op->o_bd = bd;
|
|
rc = ( bd->be_has_subordinates )( op, e, hasSubs );
|
|
op->o_bd = be;
|
|
}
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
int
|
|
relay_back_connection_init( BackendDB *bd, Connection *c )
|
|
{
|
|
relay_back_info *ri = (relay_back_info *)bd->be_private;
|
|
|
|
bd = ri->ri_bd;
|
|
if ( bd == NULL ) {
|
|
return 0;
|
|
}
|
|
|
|
if ( bd->be_connection_init ) {
|
|
return ( bd->be_connection_init )( bd, c );
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
relay_back_connection_destroy( BackendDB *bd, Connection *c )
|
|
{
|
|
relay_back_info *ri = (relay_back_info *)bd->be_private;
|
|
|
|
bd = ri->ri_bd;
|
|
if ( bd == NULL) {
|
|
return 0;
|
|
}
|
|
|
|
if ( bd->be_connection_destroy ) {
|
|
return ( bd->be_connection_destroy )( bd, c );
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*
|
|
* FIXME: must implement tools as well
|
|
*/
|