mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
323 lines
8.2 KiB
C++
323 lines
8.2 KiB
C++
/* delete.cpp - ndb backend delete routine */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2008-2020 The OpenLDAP Foundation.
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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 Howard Chu for inclusion
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* in OpenLDAP Software. This work was sponsored by MySQL.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include "lutil.h"
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#include "back-ndb.h"
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static struct berval glue_bv = BER_BVC("glue");
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int
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ndb_back_delete( Operation *op, SlapReply *rs )
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{
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struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private;
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Entry e = {0};
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Entry p = {0};
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int manageDSAit = get_manageDSAit( op );
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AttributeDescription *children = slap_schema.si_ad_children;
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AttributeDescription *entry = slap_schema.si_ad_entry;
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NdbArgs NA;
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NdbRdns rdns;
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struct berval matched;
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int num_retries = 0;
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int rc;
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LDAPControl **preread_ctrl = NULL;
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LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
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int num_ctrls = 0;
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Debug( LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(ndb_back_delete) ": %s\n",
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op->o_req_dn.bv_val, 0, 0 );
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ctrls[num_ctrls] = 0;
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/* allocate CSN */
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if ( BER_BVISNULL( &op->o_csn ) ) {
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struct berval csn;
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char csnbuf[LDAP_PVT_CSNSTR_BUFSIZE];
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csn.bv_val = csnbuf;
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csn.bv_len = sizeof(csnbuf);
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slap_get_csn( op, &csn, 1 );
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}
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if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
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dnParent( &op->o_req_dn, &p.e_name );
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dnParent( &op->o_req_ndn, &p.e_nname );
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}
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/* Get our NDB handle */
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rs->sr_err = ndb_thread_handle( op, &NA.ndb );
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rdns.nr_num = 0;
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NA.rdns = &rdns;
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NA.ocs = NULL;
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NA.e = &e;
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e.e_name = op->o_req_dn;
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e.e_nname = op->o_req_ndn;
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if( 0 ) {
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retry: /* transaction retry */
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NA.txn->close();
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NA.txn = NULL;
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Debug( LDAP_DEBUG_TRACE,
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"==> " LDAP_XSTRING(ndb_back_delete) ": retrying...\n",
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0, 0, 0 );
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if ( op->o_abandon ) {
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rs->sr_err = SLAPD_ABANDON;
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goto return_results;
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}
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if ( NA.ocs ) {
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ber_bvarray_free( NA.ocs );
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NA.ocs = NULL;
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}
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ndb_trans_backoff( ++num_retries );
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}
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/* begin transaction */
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NA.txn = NA.ndb->startTransaction();
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rs->sr_text = NULL;
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if( !NA.txn ) {
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Debug( LDAP_DEBUG_TRACE,
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LDAP_XSTRING(ndb_back_delete) ": startTransaction failed: %s (%d)\n",
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NA.ndb->getNdbError().message, NA.ndb->getNdbError().code, 0 );
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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/* get entry */
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rs->sr_err = ndb_entry_get_info( op, &NA, 1, &matched );
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switch( rs->sr_err ) {
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case 0:
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case LDAP_NO_SUCH_OBJECT:
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break;
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#if 0
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case DB_LOCK_DEADLOCK:
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case DB_LOCK_NOTGRANTED:
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goto retry;
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#endif
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case LDAP_BUSY:
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rs->sr_text = "ldap server busy";
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goto return_results;
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default:
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ||
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( !manageDSAit && bvmatch( NA.ocs, &glue_bv ))) {
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Debug( LDAP_DEBUG_ARGS,
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"<=- " LDAP_XSTRING(ndb_back_delete) ": no such object %s\n",
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op->o_req_dn.bv_val, 0, 0);
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if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ) {
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rs->sr_matched = matched.bv_val;
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if ( NA.ocs )
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ndb_check_referral( op, rs, &NA );
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} else {
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rs->sr_matched = p.e_name.bv_val;
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rs->sr_err = LDAP_NO_SUCH_OBJECT;
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}
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goto return_results;
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}
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/* check parent for "children" acl */
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rs->sr_err = access_allowed( op, &p,
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children, NULL, ACL_WDEL, NULL );
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if ( !rs->sr_err ) {
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(ndb_back_delete) ": no write "
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"access to parent\n", 0, 0, 0 );
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rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
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rs->sr_text = "no write access to parent";
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goto return_results;
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}
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rs->sr_err = ndb_entry_get_data( op, &NA, 1 );
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rs->sr_err = access_allowed( op, &e,
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entry, NULL, ACL_WDEL, NULL );
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if ( !rs->sr_err ) {
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(ndb_back_delete) ": no write access "
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"to entry\n", 0, 0, 0 );
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rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
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rs->sr_text = "no write access to entry";
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goto return_results;
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}
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if ( !manageDSAit && is_entry_referral( &e ) ) {
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/* entry is a referral, don't allow delete */
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rs->sr_ref = get_entry_referrals( op, &e );
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Debug( LDAP_DEBUG_TRACE,
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LDAP_XSTRING(ndb_back_delete) ": entry is referral\n",
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0, 0, 0 );
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rs->sr_err = LDAP_REFERRAL;
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rs->sr_matched = e.e_name.bv_val;
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rs->sr_flags = REP_REF_MUSTBEFREED;
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goto return_results;
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}
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if ( get_assert( op ) &&
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( test_filter( op, &e, (Filter *)get_assertion( op )) != LDAP_COMPARE_TRUE ))
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{
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rs->sr_err = LDAP_ASSERTION_FAILED;
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goto return_results;
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}
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/* pre-read */
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if( op->o_preread ) {
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if( preread_ctrl == NULL ) {
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preread_ctrl = &ctrls[num_ctrls++];
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ctrls[num_ctrls] = NULL;
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}
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if( slap_read_controls( op, rs, &e,
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&slap_pre_read_bv, preread_ctrl ) )
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{
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(ndb_back_delete) ": pre-read "
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"failed!\n", 0, 0, 0 );
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if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
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/* FIXME: is it correct to abort
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* operation if control fails? */
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goto return_results;
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}
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}
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}
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/* Can't do it if we have kids */
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rs->sr_err = ndb_has_children( &NA, &rc );
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if ( rs->sr_err ) {
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Debug(LDAP_DEBUG_ARGS,
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"<=- " LDAP_XSTRING(ndb_back_delete)
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": has_children failed: %s (%d)\n",
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NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "internal error";
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goto return_results;
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}
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if ( rc == LDAP_COMPARE_TRUE ) {
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Debug(LDAP_DEBUG_ARGS,
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"<=- " LDAP_XSTRING(ndb_back_delete)
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": non-leaf %s\n",
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op->o_req_dn.bv_val, 0, 0);
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rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
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rs->sr_text = "subordinate objects must be deleted first";
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goto return_results;
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}
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/* delete info */
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rs->sr_err = ndb_entry_del_info( op->o_bd, &NA );
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if ( rs->sr_err != 0 ) {
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Debug(LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(ndb_back_delete) ": del_info failed: %s (%d)\n",
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NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
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rs->sr_text = "DN index delete failed";
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rs->sr_err = LDAP_OTHER;
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goto return_results;
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}
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/* delete data */
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rs->sr_err = ndb_entry_del_data( op->o_bd, &NA );
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if ( rs->sr_err != 0 ) {
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Debug( LDAP_DEBUG_TRACE,
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"<=- " LDAP_XSTRING(ndb_back_delete) ": del_data failed: %s (%d)\n",
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NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
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rs->sr_text = "entry delete failed";
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rs->sr_err = LDAP_OTHER;
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goto return_results;
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}
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if( op->o_noop ) {
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if (( rs->sr_err=NA.txn->execute( NdbTransaction::Rollback,
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NdbOperation::AbortOnError, 1 )) != 0 ) {
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rs->sr_text = "txn (no-op) failed";
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} else {
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rs->sr_err = LDAP_X_NO_OPERATION;
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}
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} else {
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if (( rs->sr_err=NA.txn->execute( NdbTransaction::Commit,
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NdbOperation::AbortOnError, 1 )) != 0 ) {
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rs->sr_text = "txn_commit failed";
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} else {
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rs->sr_err = LDAP_SUCCESS;
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}
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}
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if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_X_NO_OPERATION ) {
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Debug( LDAP_DEBUG_TRACE,
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LDAP_XSTRING(ndb_back_delete) ": txn_%s failed: %s (%d)\n",
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op->o_noop ? "abort (no-op)" : "commit",
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NA.txn->getNdbError().message, NA.txn->getNdbError().code );
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rs->sr_err = LDAP_OTHER;
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rs->sr_text = "commit failed";
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goto return_results;
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}
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NA.txn->close();
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NA.txn = NULL;
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Debug( LDAP_DEBUG_TRACE,
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LDAP_XSTRING(ndb_back_delete) ": deleted%s id=%08lx dn=\"%s\"\n",
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op->o_noop ? " (no-op)" : "",
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e.e_id, op->o_req_dn.bv_val );
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rs->sr_err = LDAP_SUCCESS;
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rs->sr_text = NULL;
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if( num_ctrls ) rs->sr_ctrls = ctrls;
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return_results:
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if ( NA.ocs ) {
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ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx );
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NA.ocs = NULL;
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}
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/* free entry */
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if( e.e_attrs != NULL ) {
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attrs_free( e.e_attrs );
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e.e_attrs = NULL;
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}
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if( NA.txn != NULL ) {
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NA.txn->execute( Rollback );
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NA.txn->close();
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}
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send_ldap_result( op, rs );
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slap_graduate_commit_csn( op );
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if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
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slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
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slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
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}
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return rs->sr_err;
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}
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