1/*	$NetBSD: uuid_to_string.c,v 1.1 2004/09/13 21:44:54 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 2002 Marcel Moolenaar
5 * Copyright (c) 2002 Hiten Mahesh Pandya
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: src/lib/libc/uuid/uuid_to_string.c,v 1.2 2003/08/08 19:18:43 marcel Exp $
30 */
31
32#include <sys/cdefs.h>
33#if defined(LIBC_SCCS) && !defined(lint)
34__RCSID("$NetBSD: uuid_to_string.c,v 1.1 2004/09/13 21:44:54 thorpej Exp $");
35#endif
36
37#include "namespace.h"
38
39#include <stdio.h>
40#include <string.h>
41#include <uuid.h>
42
43/*
44 * uuid_to_string() - Convert a binary UUID into a string representation.
45 * See also:
46 *	http://www.opengroup.org/onlinepubs/009629399/uuid_to_string.htm
47 *
48 * NOTE: The references given above do not have a status code for when
49 *	 the string could not be allocated. The status code has been
50 *	 taken from the Hewlett-Packard implementation.
51 */
52void
53uuid_to_string(const uuid_t *u, char **s, uint32_t *status)
54{
55	static const uuid_t nil = { .time_low = 0 };
56
57	if (status != NULL)
58		*status = uuid_s_ok;
59
60	/* Why allow a NULL-pointer here? */
61	if (s == 0)
62		return;
63
64	if (u == NULL)
65		u = &nil;
66
67	asprintf(s, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
68	    u->time_low, u->time_mid, u->time_hi_and_version,
69	    u->clock_seq_hi_and_reserved, u->clock_seq_low, u->node[0],
70	    u->node[1], u->node[2], u->node[3], u->node[4], u->node[5]);
71
72	if (*s == NULL && status != NULL)
73		*status = uuid_s_no_memory;
74}
75