1 /* $NetBSD: uuid_to_string.c,v 1.2 2008/04/23 07:52:32 plunky 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 1.2 2008/04/23 07:52:32 plunky 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 */
52 void
uuid_to_string(const uuid_t * u,char ** s,uint32_t * status)53 uuid_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