/* op.c - relay backend operations */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 2003-2004 The OpenLDAP Foundation.
+ * Copyright 2004-2006 The OpenLDAP Foundation.
* Portions Copyright 2004 Pierangelo Masarati.
* All rights reserved.
*
#include <stdio.h>
-#include <ac/string.h>
-#include <ac/socket.h>
-
#include "slap.h"
#include "back-relay.h"
+static int
+relay_back_swap_bd( struct slap_op *op, struct slap_rep *rs )
+{
+ slap_callback *cb = op->o_callback;
+ BackendDB *be = op->o_bd;
+
+ op->o_bd = cb->sc_private;
+ cb->sc_private = be;
+
+ return SLAP_CB_CONTINUE;
+}
+
+static void
+relay_back_add_cb( slap_callback *cb, struct slap_op *op )
+{
+ cb->sc_next = op->o_callback;
+ cb->sc_response = relay_back_swap_bd;
+ cb->sc_cleanup = relay_back_swap_bd;
+ cb->sc_private = op->o_bd;
+ op->o_callback = cb;
+}
+
+/*
+ * selects the backend if not enforced at config;
+ * in case of failure, behaves based on err:
+ * -1 don't send result
+ * LDAP_SUCCESS don't send result; may send referral
+ * any valid error send as error result
+ */
static BackendDB *
relay_back_select_backend( struct slap_op *op, struct slap_rep *rs, int err )
{
if ( bd == NULL ) {
bd = select_backend( &op->o_req_ndn, 0, 1 );
+ if ( bd == op->o_bd ) {
+ if ( err > LDAP_SUCCESS ) {
+ send_ldap_error( op, rs,
+ LDAP_UNWILLING_TO_PERFORM,
+ "back-relay would call self" );
+ }
+ return NULL;
+ }
}
- if ( bd == NULL ) {
+ if ( bd == NULL && err > -1 ) {
if ( default_referral ) {
rs->sr_ref = referral_rewrite( default_referral,
NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
- if (!rs->sr_ref) {
+ if ( !rs->sr_ref ) {
rs->sr_ref = default_referral;
}
rs->sr_err = LDAP_REFERRAL;
send_ldap_result( op, rs );
- if (rs->sr_ref != default_referral) {
+ if ( rs->sr_ref != default_referral ) {
ber_bvarray_free( rs->sr_ref );
}
} else {
/* NOTE: err is LDAP_INVALID_CREDENTIALS for bind,
* LDAP_NO_SUCH_OBJECT for other operations.
- * noSuchObject is not allowed to be returned by bind */
+ * noSuchObject cannot be returned by bind */
rs->sr_err = err;
send_ldap_result( op, rs );
}
if ( bd->be_bind ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_bind )( op, rs );
op->o_bd = be;
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
+
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported "
int
relay_back_op_unbind( struct slap_op *op, struct slap_rep *rs )
{
+ relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
BackendDB *bd;
int rc = 1;
- bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
+ bd = ri->ri_bd;
if ( bd == NULL ) {
- return 1;
+ bd = select_backend( &op->o_req_ndn, 0, 1 );
}
- if ( bd->be_unbind ) {
+ if ( bd && bd->be_unbind ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_unbind )( op, rs );
op->o_bd = be;
- } else {
- send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
- "operation not supported "
- "within naming context" );
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
}
- return rc;
+ return 0;
}
if ( bd->be_search ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_search )( op, rs );
op->o_bd = be;
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
+
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported "
if ( bd->be_compare ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_compare )( op, rs );
op->o_bd = be;
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
+
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported "
if ( bd->be_modify ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_modify )( op, rs );
op->o_bd = be;
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
+
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported "
if ( bd->be_modrdn ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_modrdn )( op, rs );
op->o_bd = be;
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
+
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported "
if ( bd->be_add ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_add )( op, rs );
op->o_bd = be;
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
+
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported "
if ( bd->be_delete ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_delete )( op, rs );
op->o_bd = be;
+
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
}
return rc;
BackendDB *bd;
int rc = 1;
- bd = relay_back_select_backend( op, rs, LDAP_NO_SUCH_OBJECT );
+ bd = relay_back_select_backend( op, rs, -1 );
if ( bd == NULL ) {
return 1;
}
if ( bd->be_abandon ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_abandon )( op, rs );
op->o_bd = be;
- } else {
- send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
- "operation not supported "
- "within naming context" );
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
}
return rc;
if ( bd->be_cancel ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_cancel )( op, rs );
op->o_bd = be;
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
+
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported "
if ( bd->be_extended ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_extended )( op, rs );
op->o_bd = be;
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
+
} else {
send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
"operation not supported "
}
+/*
+ * NOTE: even the existence of this function is questionable: we cannot
+ * pass the bi_chk_referrals() call thru the rwm overlay because there
+ * is no way to rewrite the req_dn back; but then relay_back_chk_referrals()
+ * is passing the target database a DN that likely does not belong to its
+ * naming context... mmmh.
+ */
int
relay_back_chk_referrals( struct slap_op *op, struct slap_rep *rs )
{
- relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
BackendDB *bd;
- int rc = 1;
+ int rc = 0;
- bd = ri->ri_bd;
- if ( bd == NULL) {
- bd = select_backend( &op->o_req_ndn, 0, 1 );
- if ( bd == NULL ) {
- return 1;
+ bd = relay_back_select_backend( op, rs, LDAP_SUCCESS );
+ /* FIXME: this test only works if there are no overlays, so
+ * it is nearly useless; if made stricter, no nested back-relays
+ * can be instantiated... too bad. */
+ if ( bd == NULL || bd == op->o_bd ) {
+ return 0;
+ }
+
+ /* no nested back-relays... */
+ if ( overlay_is_over( bd ) ) {
+ slap_overinfo *oi = (slap_overinfo *)bd->bd_info->bi_private;
+
+ if ( oi->oi_orig == op->o_bd->bd_info ) {
+ return 0;
}
}
if ( bd->be_chk_referrals ) {
BackendDB *be = op->o_bd;
+ slap_callback cb;
+
+ relay_back_add_cb( &cb, op );
op->o_bd = bd;
rc = ( bd->be_chk_referrals )( op, rs );
op->o_bd = be;
+
+ if ( op->o_callback == &cb ) {
+ op->o_callback = op->o_callback->sc_next;
+ }
}
return rc;
}
int
-relay_back_operational( struct slap_op *op, struct slap_rep *rs,
- int opattrs, Attribute **ap )
+relay_back_operational( struct slap_op *op, struct slap_rep *rs )
{
relay_back_info *ri = (relay_back_info *)op->o_bd->be_private;
BackendDB *bd;
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, opattrs, ap );
+ 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;
{
relay_back_info *ri = (relay_back_info *)bd->be_private;
- if ( ri->ri_bd->be_connection_init ) {
- return ( ri->ri_bd->be_connection_init )( ri->ri_bd, c );
+ bd = ri->ri_bd;
+ if ( bd == NULL ) {
+ return 0;
}
- return 1;
+ if ( bd->be_connection_init ) {
+ return ( bd->be_connection_init )( bd, c );
+ }
+ return 0;
}
int
{
relay_back_info *ri = (relay_back_info *)bd->be_private;
- if ( ri->ri_bd->be_connection_destroy ) {
- return ( ri->ri_bd->be_connection_destroy )( ri->ri_bd, c );
+ bd = ri->ri_bd;
+ if ( bd == NULL) {
+ return 0;
+ }
+
+ if ( bd->be_connection_destroy ) {
+ return ( bd->be_connection_destroy )( bd, c );
}
- return 1;
+ return 0;
}
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