1/*	$NetBSD: dn2entry.c,v 1.2 2021/08/14 16:15:02 christos Exp $	*/
2
3/* OpenLDAP WiredTiger backend */
4/* $OpenLDAP$ */
5/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
6 *
7 * Copyright 2002-2021 The OpenLDAP Foundation.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted only as authorized by the OpenLDAP
12 * Public License.
13 *
14 * A copy of this license is available in the file LICENSE in the
15 * top-level directory of the distribution or, alternatively, at
16 * <http://www.OpenLDAP.org/license.html>.
17 */
18/* ACKNOWLEDGEMENTS:
19 * This work was developed by HAMANO Tsukasa <hamano@osstech.co.jp>
20 * based on back-bdb for inclusion in OpenLDAP Software.
21 * WiredTiger is a product of MongoDB Inc.
22 */
23
24#include <sys/cdefs.h>
25__RCSID("$NetBSD: dn2entry.c,v 1.2 2021/08/14 16:15:02 christos Exp $");
26
27#include "portable.h"
28
29#include <stdio.h>
30#include <ac/string.h>
31#include "back-wt.h"
32#include "slap-config.h"
33
34/*
35 * dn2entry - look up dn in the db and return the corresponding entry.
36 * No longer return closest ancestor, see wt_dn2pentry().
37 */
38int wt_dn2entry( BackendDB *be,
39				 wt_ctx *wc,
40				 struct berval *ndn,
41				 Entry **ep ){
42	uint64_t id;
43	WT_CURSOR *cursor = NULL;
44	WT_ITEM item;
45	EntryHeader eh;
46	int rc;
47	int eoff;
48	Entry *e = NULL;
49	WT_SESSION *session = wc->session;
50
51	if( ndn->bv_len == 0 ){
52		/* parent of root dn */
53		return WT_NOTFOUND;
54	}
55
56	rc = session->open_cursor(session,
57							  WT_INDEX_DN"(id, entry)",
58							  NULL, NULL, &cursor);
59	if ( rc ) {
60		Debug( LDAP_DEBUG_ANY,
61			   LDAP_XSTRING(wt_dn2entry)
62			   ": open_cursor failed: %s (%d)\n",
63			   wiredtiger_strerror(rc), rc );
64		goto done;
65	}
66
67	cursor->set_key(cursor, ndn->bv_val);
68	rc = cursor->search(cursor);
69	switch( rc ){
70	case 0:
71		break;
72	case WT_NOTFOUND:
73		goto done;
74	default:
75		Debug( LDAP_DEBUG_ANY,
76			   LDAP_XSTRING(wt_dn2entry)
77			   ": search failed: %s (%d)\n",
78			   wiredtiger_strerror(rc), rc );
79		goto done;
80	}
81	cursor->get_value(cursor, &id, &item);
82	rc = wt_entry_header( &item,  &eh );
83
84	eoff = eh.data - (char *)item.data;
85	eh.bv.bv_len = eh.nvals * sizeof( struct berval ) + item.size;
86	eh.bv.bv_val = ch_malloc( eh.bv.bv_len );
87	memset(eh.bv.bv_val, 0xff, eh.bv.bv_len);
88	eh.data = eh.bv.bv_val + eh.nvals * sizeof( struct berval );
89	memcpy(eh.data, item.data, item.size);
90	eh.data += eoff;
91	rc = entry_decode( &eh, &e );
92	if ( rc ) {
93		Debug( LDAP_DEBUG_ANY,
94			   LDAP_XSTRING(wt_dn2entry)
95			   ": entry decode error: %d\n",
96			   rc );
97		goto done;
98	}
99
100	e->e_id = id;
101	*ep = e;
102
103done:
104	if(cursor){
105		cursor->close(cursor);
106	}
107	return rc;
108}
109
110/* dn2pentry - return parent entry */
111int wt_dn2pentry( BackendDB *be,
112				  wt_ctx *wc,
113				  struct berval *ndn,
114				  Entry **ep ){
115	Entry *e = NULL;
116	struct berval pdn;
117	int rc;
118
119	if (be_issuffix( be, ndn )) {
120		*ep = NULL;
121		return WT_NOTFOUND;
122	}
123
124	dnParent( ndn, &pdn );
125	rc = wt_dn2entry(be, wc, &pdn, &e);
126	*ep = e;
127	return rc;
128}
129
130/*
131 * Local variables:
132 * indent-tabs-mode: t
133 * tab-width: 4
134 * c-basic-offset: 4
135 * End:
136 */
137