diff options
Diffstat (limited to 'servers/slapd/back-ndb/delete.cpp')
| -rw-r--r-- | servers/slapd/back-ndb/delete.cpp | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/servers/slapd/back-ndb/delete.cpp b/servers/slapd/back-ndb/delete.cpp new file mode 100644 index 0000000..46b33f6 --- /dev/null +++ b/servers/slapd/back-ndb/delete.cpp @@ -0,0 +1,322 @@ +/* delete.cpp - ndb backend delete routine */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2008-2022 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>. + */ +/* ACKNOWLEDGEMENTS: + * This work was initially developed by Howard Chu for inclusion + * in OpenLDAP Software. This work was sponsored by MySQL. + */ + +#include "portable.h" + +#include <stdio.h> +#include <ac/string.h> + +#include "lutil.h" +#include "back-ndb.h" + +static struct berval glue_bv = BER_BVC("glue"); + +int +ndb_back_delete( Operation *op, SlapReply *rs ) +{ + struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private; + Entry e = {0}; + Entry p = {0}; + int manageDSAit = get_manageDSAit( op ); + AttributeDescription *children = slap_schema.si_ad_children; + AttributeDescription *entry = slap_schema.si_ad_entry; + + NdbArgs NA; + NdbRdns rdns; + struct berval matched; + + int num_retries = 0; + + int rc; + + LDAPControl **preread_ctrl = NULL; + LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS]; + int num_ctrls = 0; + + Debug( LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(ndb_back_delete) ": %s\n", + op->o_req_dn.bv_val, 0, 0 ); + + ctrls[num_ctrls] = 0; + + /* allocate CSN */ + if ( BER_BVISNULL( &op->o_csn ) ) { + struct berval csn; + char csnbuf[LDAP_PVT_CSNSTR_BUFSIZE]; + + csn.bv_val = csnbuf; + csn.bv_len = sizeof(csnbuf); + slap_get_csn( op, &csn, 1 ); + } + + if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) { + dnParent( &op->o_req_dn, &p.e_name ); + dnParent( &op->o_req_ndn, &p.e_nname ); + } + + /* Get our NDB handle */ + rs->sr_err = ndb_thread_handle( op, &NA.ndb ); + rdns.nr_num = 0; + NA.rdns = &rdns; + NA.ocs = NULL; + NA.e = &e; + e.e_name = op->o_req_dn; + e.e_nname = op->o_req_ndn; + + if( 0 ) { +retry: /* transaction retry */ + NA.txn->close(); + NA.txn = NULL; + Debug( LDAP_DEBUG_TRACE, + "==> " LDAP_XSTRING(ndb_back_delete) ": retrying...\n", + 0, 0, 0 ); + if ( op->o_abandon ) { + rs->sr_err = SLAPD_ABANDON; + goto return_results; + } + if ( NA.ocs ) { + ber_bvarray_free( NA.ocs ); + NA.ocs = NULL; + } + ndb_trans_backoff( ++num_retries ); + } + + /* begin transaction */ + NA.txn = NA.ndb->startTransaction(); + rs->sr_text = NULL; + if( !NA.txn ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(ndb_back_delete) ": startTransaction failed: %s (%d)\n", + NA.ndb->getNdbError().message, NA.ndb->getNdbError().code, 0 ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + + /* get entry */ + rs->sr_err = ndb_entry_get_info( op, &NA, 1, &matched ); + switch( rs->sr_err ) { + case 0: + case LDAP_NO_SUCH_OBJECT: + break; +#if 0 + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; +#endif + case LDAP_BUSY: + rs->sr_text = "ldap server busy"; + goto return_results; + default: + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + + if ( rs->sr_err == LDAP_NO_SUCH_OBJECT || + ( !manageDSAit && bvmatch( NA.ocs, &glue_bv ))) { + Debug( LDAP_DEBUG_ARGS, + "<=- " LDAP_XSTRING(ndb_back_delete) ": no such object %s\n", + op->o_req_dn.bv_val, 0, 0); + + if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ) { + rs->sr_matched = matched.bv_val; + if ( NA.ocs ) + ndb_check_referral( op, rs, &NA ); + } else { + rs->sr_matched = p.e_name.bv_val; + rs->sr_err = LDAP_NO_SUCH_OBJECT; + } + goto return_results; + } + + /* check parent for "children" acl */ + rs->sr_err = access_allowed( op, &p, + children, NULL, ACL_WDEL, NULL ); + + if ( !rs->sr_err ) { + Debug( LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(ndb_back_delete) ": no write " + "access to parent\n", 0, 0, 0 ); + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + rs->sr_text = "no write access to parent"; + goto return_results; + } + + rs->sr_err = ndb_entry_get_data( op, &NA, 1 ); + + rs->sr_err = access_allowed( op, &e, + entry, NULL, ACL_WDEL, NULL ); + + if ( !rs->sr_err ) { + Debug( LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(ndb_back_delete) ": no write access " + "to entry\n", 0, 0, 0 ); + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + rs->sr_text = "no write access to entry"; + goto return_results; + } + + if ( !manageDSAit && is_entry_referral( &e ) ) { + /* entry is a referral, don't allow delete */ + rs->sr_ref = get_entry_referrals( op, &e ); + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(ndb_back_delete) ": entry is referral\n", + 0, 0, 0 ); + + rs->sr_err = LDAP_REFERRAL; + rs->sr_matched = e.e_name.bv_val; + rs->sr_flags = REP_REF_MUSTBEFREED; + goto return_results; + } + + if ( get_assert( op ) && + ( test_filter( op, &e, (Filter *)get_assertion( op )) != LDAP_COMPARE_TRUE )) + { + rs->sr_err = LDAP_ASSERTION_FAILED; + goto return_results; + } + + /* pre-read */ + if( op->o_preread ) { + if( preread_ctrl == NULL ) { + preread_ctrl = &ctrls[num_ctrls++]; + ctrls[num_ctrls] = NULL; + } + if( slap_read_controls( op, rs, &e, + &slap_pre_read_bv, preread_ctrl ) ) + { + Debug( LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(ndb_back_delete) ": pre-read " + "failed!\n", 0, 0, 0 ); + if ( op->o_preread & SLAP_CONTROL_CRITICAL ) { + /* FIXME: is it correct to abort + * operation if control fails? */ + goto return_results; + } + } + } + + /* Can't do it if we have kids */ + rs->sr_err = ndb_has_children( &NA, &rc ); + if ( rs->sr_err ) { + Debug(LDAP_DEBUG_ARGS, + "<=- " LDAP_XSTRING(ndb_back_delete) + ": has_children failed: %s (%d)\n", + NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + if ( rc == LDAP_COMPARE_TRUE ) { + Debug(LDAP_DEBUG_ARGS, + "<=- " LDAP_XSTRING(ndb_back_delete) + ": non-leaf %s\n", + op->o_req_dn.bv_val, 0, 0); + rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF; + rs->sr_text = "subordinate objects must be deleted first"; + goto return_results; + } + + /* delete info */ + rs->sr_err = ndb_entry_del_info( op->o_bd, &NA ); + if ( rs->sr_err != 0 ) { + Debug(LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(ndb_back_delete) ": del_info failed: %s (%d)\n", + NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 ); + rs->sr_text = "DN index delete failed"; + rs->sr_err = LDAP_OTHER; + goto return_results; + } + + /* delete data */ + rs->sr_err = ndb_entry_del_data( op->o_bd, &NA ); + if ( rs->sr_err != 0 ) { + Debug( LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(ndb_back_delete) ": del_data failed: %s (%d)\n", + NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 ); + rs->sr_text = "entry delete failed"; + rs->sr_err = LDAP_OTHER; + goto return_results; + } + + if( op->o_noop ) { + if (( rs->sr_err=NA.txn->execute( NdbTransaction::Rollback, + NdbOperation::AbortOnError, 1 )) != 0 ) { + rs->sr_text = "txn (no-op) failed"; + } else { + rs->sr_err = LDAP_X_NO_OPERATION; + } + } else { + if (( rs->sr_err=NA.txn->execute( NdbTransaction::Commit, + NdbOperation::AbortOnError, 1 )) != 0 ) { + rs->sr_text = "txn_commit failed"; + } else { + rs->sr_err = LDAP_SUCCESS; + } + } + + if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_X_NO_OPERATION ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(ndb_back_delete) ": txn_%s failed: %s (%d)\n", + op->o_noop ? "abort (no-op)" : "commit", + NA.txn->getNdbError().message, NA.txn->getNdbError().code ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "commit failed"; + + goto return_results; + } + NA.txn->close(); + NA.txn = NULL; + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(ndb_back_delete) ": deleted%s id=%08lx dn=\"%s\"\n", + op->o_noop ? " (no-op)" : "", + e.e_id, op->o_req_dn.bv_val ); + rs->sr_err = LDAP_SUCCESS; + rs->sr_text = NULL; + if( num_ctrls ) rs->sr_ctrls = ctrls; + +return_results: + if ( NA.ocs ) { + ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx ); + NA.ocs = NULL; + } + + /* free entry */ + if( e.e_attrs != NULL ) { + attrs_free( e.e_attrs ); + e.e_attrs = NULL; + } + + if( NA.txn != NULL ) { + NA.txn->execute( Rollback ); + NA.txn->close(); + } + + send_ldap_result( op, rs ); + slap_graduate_commit_csn( op ); + + if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) { + slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx ); + slap_sl_free( *preread_ctrl, op->o_tmpmemctx ); + } + return rs->sr_err; +} |