diff options
Diffstat (limited to 'servers/slapd/back-wt/delete.c')
| -rw-r--r-- | servers/slapd/back-wt/delete.c | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/servers/slapd/back-wt/delete.c b/servers/slapd/back-wt/delete.c new file mode 100644 index 0000000..9673662 --- /dev/null +++ b/servers/slapd/back-wt/delete.c @@ -0,0 +1,419 @@ +/* OpenLDAP WiredTiger backend */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2002-2022 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 developed by HAMANO Tsukasa <hamano@osstech.co.jp> + * based on back-bdb for inclusion in OpenLDAP Software. + * WiredTiger is a product of MongoDB Inc. + */ + +#include "portable.h" + +#include <stdio.h> +#include <ac/string.h> + +#include "back-wt.h" +#include "slap-config.h" + +int +wt_delete( Operation *op, SlapReply *rs ) +{ + struct wt_info *wi = (struct wt_info *) op->o_bd->be_private; + struct berval pdn = {0, NULL}; + Entry *e = NULL; + Entry *p = NULL; + int manageDSAit = get_manageDSAit( op ); + AttributeDescription *children = slap_schema.si_ad_children; + AttributeDescription *entry = slap_schema.si_ad_entry; + + LDAPControl **preread_ctrl = NULL; + LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS]; + int num_ctrls = 0; + + wt_ctx *wc; + int rc; + + int parent_is_glue = 0; + int parent_is_leaf = 0; + + Debug( LDAP_DEBUG_ARGS, "==> wt_delete: %s\n", + op->o_req_dn.bv_val ); + + if( op->o_txnSpec && txn_preop( op, rs )) + return rs->sr_err; + + ctrls[num_ctrls] = 0; + rs->sr_text = NULL; + + wc = wt_ctx_get(op, wi); + if( !wc ){ + Debug( LDAP_DEBUG_TRACE, "wt_delete: wt_ctx_get failed\n" ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + +/* 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_ndn, &pdn ); + } + + /* get parent */ + rc = wt_dn2entry(op->o_bd, wc, &pdn, &p); + switch( rc ) { + case 0: + case WT_NOTFOUND: + break; + default: + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + Debug( LDAP_DEBUG_ANY, + "wt_delete: error at wt_dn2entry() rc=%d\n", rc ); + goto return_results; + } + + if ( rc == WT_NOTFOUND && pdn.bv_len != 0 ) { + Debug( LDAP_DEBUG_ARGS, + "<== wt_delete: parent not found %s\n", op->o_req_dn.bv_val ); + rc = wt_dn2aentry(op->o_bd, wc, &op->o_req_ndn, &e); + Debug( LDAP_DEBUG_ARGS, "<== wt_delete: rc=%d\n", rc ); + + switch( rc ) { + case 0: + break; + case WT_NOTFOUND: + rs->sr_err = LDAP_NO_SUCH_OBJECT; + goto return_results; + default: + Debug( LDAP_DEBUG_ANY, "wt_delete: wt_dn2aentry failed (%d)\n", rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + + if ( e && !BER_BVISEMPTY( &e->e_name )) { + rs->sr_matched = ch_strdup( e->e_name.bv_val ); + if ( is_entry_referral( e )) { + BerVarray ref = get_entry_referrals( op, e ); + rs->sr_ref = referral_rewrite( ref, &e->e_name, + &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + ber_bvarray_free( ref ); + } else { + rs->sr_ref = NULL; + } + } else { + rs->sr_ref = referral_rewrite( default_referral, NULL, + &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + } + + rs->sr_err = LDAP_REFERRAL; + rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED; + goto return_results; + } + + /* get entry */ + rc = wt_dn2entry(op->o_bd, wc, &op->o_req_ndn, &e); + switch( rc ) { + case 0: + break; + case WT_NOTFOUND: + break; + default: + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + Debug( LDAP_DEBUG_ANY, + "wt_delete: error at wt_dn2entry() rc=%d\n", rc ); + goto return_results; + } + + /* FIXME : dn2entry() should return non-glue entry */ + if (rc == WT_NOTFOUND || + ( !manageDSAit && e && is_entry_glue( e ) )) { + if ( !e ) { + Debug( LDAP_DEBUG_ARGS, + "<== wt_delete: no such object %s\n", + op->o_req_dn.bv_val); + rc = wt_dn2aentry(op->o_bd, wc, &op->o_req_ndn, &e); + switch( rc ) { + case 0: + break; + case WT_NOTFOUND: + rs->sr_err = LDAP_NO_SUCH_OBJECT; + goto return_results; + default: + Debug( LDAP_DEBUG_ANY, "wt_delete: wt_dn2aentry failed (%d)\n", rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + } + + rs->sr_matched = ch_strdup( e->e_dn ); + if ( is_entry_referral( e )) { + BerVarray ref = get_entry_referrals( op, e ); + rs->sr_ref = referral_rewrite( ref, &e->e_name, + &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + ber_bvarray_free( ref ); + } else { + rs->sr_ref = NULL; + } + + rs->sr_err = LDAP_REFERRAL; + rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED; + goto return_results; + } + + if ( pdn.bv_len != 0 ) { + /* 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, + "<== wt_delete: no write access to parent\n" ); + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + rs->sr_text = "no write access to parent"; + goto return_results; + } + + } else { + /* no parent, must be root to delete */ + if( ! be_isroot( op ) ) { + if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv ) + || be_shadow_update( op ) ) { + p = (Entry *)&slap_entry_root; + + /* check parent for "children" acl */ + rs->sr_err = access_allowed( op, p, + children, NULL, ACL_WDEL, NULL ); + + p = NULL; + + if ( !rs->sr_err ) { + Debug( LDAP_DEBUG_TRACE, + "<== wt_delete: no access to parent\n" ); + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + rs->sr_text = "no write access to parent"; + goto return_results; + } + + } else { + Debug( LDAP_DEBUG_TRACE, + "<== wt_delete: no parent and not root\n" ); + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + goto return_results; + } + } + } + + if ( get_assert( op ) && + ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE )) + { + rs->sr_err = LDAP_ASSERTION_FAILED; + goto return_results; + } + + rs->sr_err = access_allowed( op, e, + entry, NULL, ACL_WDEL, NULL ); + if ( !rs->sr_err ) { + Debug( LDAP_DEBUG_TRACE, + "<== wt_delete: no write access to entry\n" ); + 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, "wt_delete: entry is referral\n" ); + + rs->sr_err = LDAP_REFERRAL; + rs->sr_matched = ch_strdup( e->e_name.bv_val ); + rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED; + 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, + "<== wt_delete: pre-read failed!\n" ); + 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 */ + rc = wt_dn2id_has_children( op, wc, e->e_id ); + if( rc != WT_NOTFOUND ) { + switch( rc ) { + case 0: + Debug(LDAP_DEBUG_ARGS, + "<== wt_delete: non-leaf %s\n", op->o_req_dn.bv_val ); + rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF; + rs->sr_text = "subordinate objects must be deleted first"; + break; + default: + Debug(LDAP_DEBUG_ARGS, + "<== wt_delete: has_children failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + } + goto return_results; + } + + /* begin transaction */ + rc = wc->session->begin_transaction(wc->session, NULL); + if( rc ) { + Debug( LDAP_DEBUG_TRACE, + "wt_delete: begin_transaction failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "begin_transaction failed"; + goto return_results; + } + + /* delete from dn2id */ + rc = wt_dn2id_delete( op, wc, &op->o_req_ndn); + if ( rc ) { + Debug(LDAP_DEBUG_TRACE, + "<== wt_delete: dn2id failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "dn2id delete failed"; + wc->session->rollback_transaction(wc->session, NULL); + goto return_results; + } + + /* delete indices for old attributes */ + rc = wt_index_entry_del( op, wc, e ); + if ( rc ) { + Debug(LDAP_DEBUG_TRACE, + "<== wt_delete: index delete failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "index delete failed"; + wc->session->rollback_transaction(wc->session, NULL); + goto return_results; + } + + /* fixup delete CSN */ + if ( !SLAP_SHADOW( op->o_bd )) { + struct berval vals[2]; + + assert( !BER_BVISNULL( &op->o_csn ) ); + vals[0] = op->o_csn; + BER_BVZERO( &vals[1] ); + rs->sr_err = wt_index_values( op, wc, slap_schema.si_ad_entryCSN, + vals, 0, SLAP_INDEX_ADD_OP ); + if ( rs->sr_err != LDAP_SUCCESS ) { + rs->sr_text = "entryCSN index update failed"; + rs->sr_err = LDAP_OTHER; + wc->session->rollback_transaction(wc->session, NULL); + goto return_results; + } + } + + /* delete from id2entry */ + rc = wt_id2entry_delete( op, wc, e ); + if ( rc ) { + Debug( LDAP_DEBUG_TRACE, + "<== wt_delete: id2entry failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "entry delete failed"; + wc->session->rollback_transaction(wc->session, NULL); + goto return_results; + } + + if ( pdn.bv_len != 0 ) { + // TODO: glue entry + } + + rc = wc->session->commit_transaction(wc->session, NULL); + if( rc ) { + Debug( LDAP_DEBUG_TRACE, + "<== wt_delete: commit_transaction failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "commit_transaction failed"; + goto return_results; + } + + Debug( LDAP_DEBUG_TRACE, + "wt_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 ( rs->sr_err == LDAP_SUCCESS && parent_is_glue && parent_is_leaf ) { + op->o_delete_glue_parent = 1; + } + + if ( p != NULL ) { + wt_entry_return( p ); + } + + /* free entry */ + if( e != NULL ) { + wt_entry_return( e ); + } + + 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 ); + } + + /* TODO: checkpoint */ + + return rs->sr_err; +} + +/* + * Local variables: + * indent-tabs-mode: t + * tab-width: 4 + * c-basic-offset: 4 + * End: + */ |