From b527294153be3b79563c82c66102adc0004736c0 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 15 Apr 2024 19:54:12 +0200
Subject: Adding upstream version 2.6.7+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 servers/slapd/back-wt/dn2entry.c | 176 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 176 insertions(+)
 create mode 100644 servers/slapd/back-wt/dn2entry.c

(limited to 'servers/slapd/back-wt/dn2entry.c')

diff --git a/servers/slapd/back-wt/dn2entry.c b/servers/slapd/back-wt/dn2entry.c
new file mode 100644
index 0000000..84cb13d
--- /dev/null
+++ b/servers/slapd/back-wt/dn2entry.c
@@ -0,0 +1,176 @@
+/* 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:
+ */
-- 
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