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-rw-r--r--servers/slapd/back-wt/dn2entry.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/servers/slapd/back-wt/dn2entry.c b/servers/slapd/back-wt/dn2entry.c
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+++ b/servers/slapd/back-wt/dn2entry.c
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+/* 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"
+
+/*
+ * dn2entry - look up dn in the db and return the corresponding entry.
+ * No longer return closest ancestor, see wt_dn2pentry().
+ */
+int wt_dn2entry( BackendDB *be,
+ wt_ctx *wc,
+ struct berval *ndn,
+ Entry **ep ){
+ uint64_t id;
+ WT_ITEM item;
+ EntryHeader eh;
+ int rc;
+ int eoff;
+ Entry *e = NULL;
+ WT_SESSION *session = wc->session;
+ WT_CURSOR *cursor = wc->dn2entry;
+
+ if( ndn->bv_len == 0 ){
+ /* empty dn */
+ e = entry_alloc();
+ ber_dupbv(&e->e_nname, ndn);
+ *ep = e;
+ return LDAP_SUCCESS;
+ }
+
+ if(!cursor){
+ rc = session->open_cursor(session,
+ WT_INDEX_DN"(id, entry)",
+ NULL, NULL, &cursor);
+ if ( rc ) {
+ Debug( LDAP_DEBUG_ANY,
+ "wt_dn2entry: open_cursor failed: %s (%d)\n",
+ wiredtiger_strerror(rc), rc );
+ goto done;
+ }
+ wc->dn2entry = cursor;
+ }
+
+ cursor->set_key(cursor, ndn->bv_val);
+ rc = cursor->search(cursor);
+ switch( rc ){
+ case 0:
+ break;
+ case WT_NOTFOUND:
+ goto done;
+ default:
+ Debug( LDAP_DEBUG_ANY,
+ "wt_dn2entry: search failed: %s (%d)\n",
+ wiredtiger_strerror(rc), rc );
+ goto done;
+ }
+ cursor->get_value(cursor, &id, &item);
+ rc = wt_entry_header( &item, &eh );
+
+ eoff = eh.data - (char *)item.data;
+ eh.bv.bv_len = eh.nvals * sizeof( struct berval ) + item.size;
+ eh.bv.bv_val = ch_malloc( eh.bv.bv_len );
+ memset(eh.bv.bv_val, 0xff, eh.bv.bv_len);
+ eh.data = eh.bv.bv_val + eh.nvals * sizeof( struct berval );
+ memcpy(eh.data, item.data, item.size);
+ eh.data += eoff;
+ rc = entry_decode( &eh, &e );
+ if ( rc ) {
+ Debug( LDAP_DEBUG_ANY,
+ "wt_dn2entry: entry decode error: %d\n", rc );
+ goto done;
+ }
+
+ e->e_id = id;
+ *ep = e;
+
+done:
+
+#ifdef WT_CURSOR_CACHE
+ if(cursor){
+ cursor->reset(cursor);
+ }
+#else
+ if(cursor){
+ cursor->close(cursor);
+ wc->dn2entry = NULL;
+ }
+#endif
+ return rc;
+}
+
+/* dn2pentry - return parent entry */
+int wt_dn2pentry( BackendDB *be,
+ wt_ctx *wc,
+ struct berval *ndn,
+ Entry **ep ){
+ Entry *e = NULL;
+ struct berval pdn;
+ int rc;
+
+ if (be_issuffix( be, ndn )) {
+ *ep = NULL;
+ return WT_NOTFOUND;
+ }
+
+ dnParent( ndn, &pdn );
+ rc = wt_dn2entry(be, wc, &pdn, &e);
+ *ep = e;
+ return rc;
+}
+
+/* dn2aentry - return ancestor entry */
+int wt_dn2aentry( BackendDB *be,
+ wt_ctx *wc,
+ struct berval *ndn,
+ Entry **ep ) {
+ Entry *e = NULL;
+ struct berval pdn;
+ int rc;
+
+ if (be_issuffix( be, ndn )) {
+ *ep = NULL;
+ return 0;
+ }
+
+ dnParent( ndn, &pdn );
+ rc = wt_dn2entry(be, wc, &pdn, &e);
+ switch( rc ) {
+ case 0:
+ *ep = e;
+ break;
+ case WT_NOTFOUND:
+ rc = wt_dn2aentry(be, wc, &pdn, &e);
+ if (rc != 0 && rc != WT_NOTFOUND) {
+ return rc;
+ }
+ *ep = e;
+ break;
+ default:
+ Debug( LDAP_DEBUG_ANY,
+ "wt_dn2aentry: failed %s (%d)\n",
+ wiredtiger_strerror(rc), rc );
+ }
+ return rc;
+}
+
+/*
+ * Local variables:
+ * indent-tabs-mode: t
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */