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-rw-r--r--servers/slapd/delete.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/servers/slapd/delete.c b/servers/slapd/delete.c
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+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 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>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+
+#include "lutil.h"
+
+int
+do_delete(
+ Operation *op,
+ SlapReply *rs )
+{
+ struct berval dn = BER_BVNULL;
+
+ Debug( LDAP_DEBUG_TRACE, "%s do_delete\n",
+ op->o_log_prefix );
+ /*
+ * Parse the delete request. It looks like this:
+ *
+ * DelRequest := DistinguishedName
+ */
+
+ if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
+ Debug( LDAP_DEBUG_ANY, "%s do_delete: ber_scanf failed\n",
+ op->o_log_prefix );
+ send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
+ return SLAPD_DISCONNECT;
+ }
+
+ if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY, "%s do_delete: get_ctrls failed\n",
+ op->o_log_prefix );
+ goto cleanup;
+ }
+
+ rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
+ op->o_tmpmemctx );
+ if( rs->sr_err != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY, "%s do_delete: invalid dn (%s)\n",
+ op->o_log_prefix, dn.bv_val );
+ send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
+ goto cleanup;
+ }
+
+ Debug( LDAP_DEBUG_STATS, "%s DEL dn=\"%s\"\n",
+ op->o_log_prefix, op->o_req_dn.bv_val );
+
+ if( op->o_req_ndn.bv_len == 0 ) {
+ Debug( LDAP_DEBUG_ANY, "%s do_delete: root dse!\n",
+ op->o_log_prefix );
+ /* protocolError would likely be a more appropriate error */
+ send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+ "cannot delete the root DSE" );
+ goto cleanup;
+
+ } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
+ Debug( LDAP_DEBUG_ANY, "%s do_delete: subschema subentry!\n",
+ op->o_log_prefix );
+ /* protocolError would likely be a more appropriate error */
+ send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+ "cannot delete the root DSE" );
+ goto cleanup;
+ }
+
+ op->o_bd = frontendDB;
+ rs->sr_err = frontendDB->be_delete( op, rs );
+ if ( rs->sr_err == SLAPD_ASYNCOP ) {
+ /* skip cleanup */
+ return rs->sr_err;
+ }
+
+ if( rs->sr_err == LDAP_TXN_SPECIFY_OKAY ) {
+ /* skip cleanup */
+ return rs->sr_err;
+ }
+
+cleanup:;
+ op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
+ op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
+ return rs->sr_err;
+}
+
+int
+fe_op_delete( Operation *op, SlapReply *rs )
+{
+ struct berval pdn = BER_BVNULL;
+ BackendDB *op_be, *bd = op->o_bd;
+
+ /*
+ * We could be serving multiple database backends. Select the
+ * appropriate one, or send a referral to our "referral server"
+ * if we don't hold it.
+ */
+ op->o_bd = select_backend( &op->o_req_ndn, 1 );
+ if ( op->o_bd == NULL ) {
+ op->o_bd = bd;
+ rs->sr_ref = referral_rewrite( default_referral,
+ NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
+
+ if (!rs->sr_ref) rs->sr_ref = default_referral;
+ if ( rs->sr_ref != NULL ) {
+ rs->sr_err = LDAP_REFERRAL;
+ send_ldap_result( op, rs );
+
+ if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
+ } else {
+ send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+ "no global superior knowledge" );
+ }
+ goto cleanup;
+ }
+
+ /* If we've got a glued backend, check the real backend */
+ op_be = op->o_bd;
+ if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
+ op->o_bd = select_backend( &op->o_req_ndn, 0 );
+ }
+
+ /* check restrictions */
+ if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
+ send_ldap_result( op, rs );
+ goto cleanup;
+ }
+
+ /* check for referrals */
+ if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
+ goto cleanup;
+ }
+
+ /*
+ * do the delete if 1 && (2 || 3)
+ * 1) there is a delete function implemented in this backend;
+ * 2) this backend is the provider for what it holds;
+ * 3) it's a replica and the dn supplied is the update_ndn.
+ */
+ if ( op->o_bd->be_delete ) {
+ /* do the update here */
+ int repl_user = be_isupdate( op );
+ if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user ) {
+ struct berval org_req_dn = BER_BVNULL;
+ struct berval org_req_ndn = BER_BVNULL;
+ struct berval org_dn = BER_BVNULL;
+ struct berval org_ndn = BER_BVNULL;
+ int org_managedsait;
+
+ if ( op->o_txnSpec ) {
+ txn_preop( op, rs );
+ goto cleanup;
+ }
+
+ op->o_bd = op_be;
+ op->o_bd->be_delete( op, rs );
+
+ org_req_dn = op->o_req_dn;
+ org_req_ndn = op->o_req_ndn;
+ org_dn = op->o_dn;
+ org_ndn = op->o_ndn;
+ org_managedsait = get_manageDSAit( op );
+ op->o_dn = op->o_bd->be_rootdn;
+ op->o_ndn = op->o_bd->be_rootndn;
+ op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
+
+ while ( rs->sr_err == LDAP_SUCCESS &&
+ op->o_delete_glue_parent )
+ {
+ op->o_delete_glue_parent = 0;
+ if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
+ slap_callback cb = { NULL, NULL, NULL, NULL };
+ cb.sc_response = slap_null_cb;
+ dnParent( &op->o_req_ndn, &pdn );
+ op->o_req_dn = pdn;
+ op->o_req_ndn = pdn;
+ op->o_callback = &cb;
+ op->o_bd->be_delete( op, rs );
+ } else {
+ break;
+ }
+ }
+
+ op->o_managedsait = org_managedsait;
+ op->o_dn = org_dn;
+ op->o_ndn = org_ndn;
+ op->o_req_dn = org_req_dn;
+ op->o_req_ndn = org_req_ndn;
+ op->o_delete_glue_parent = 0;
+
+ } else {
+ BerVarray defref = op->o_bd->be_update_refs
+ ? op->o_bd->be_update_refs : default_referral;
+
+ if ( defref != NULL ) {
+ rs->sr_ref = referral_rewrite( defref,
+ NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
+ if (!rs->sr_ref) rs->sr_ref = defref;
+ rs->sr_err = LDAP_REFERRAL;
+ send_ldap_result( op, rs );
+
+ if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
+
+ } else {
+ send_ldap_error( op, rs,
+ LDAP_UNWILLING_TO_PERFORM,
+ "shadow context; no update referral" );
+ }
+ }
+
+ } else {
+ send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+ "operation not supported within namingContext" );
+ }
+
+cleanup:;
+ op->o_bd = bd;
+ return rs->sr_err;
+}