1/*	$NetBSD: uuid_stream.c,v 1.3 2008/04/19 18:21:38 plunky Exp $	*/
2
3/*-
4 * Copyright (c) 2002 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
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 ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/endian.h>
33#include <uuid.h>
34
35/*
36 * Encode/Decode UUID into octet-stream.
37 *   http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
38 *
39 * 0                   1                   2                   3
40 *   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
41 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
42 *  |                          time_low                             |
43 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
44 *  |       time_mid                |         time_hi_and_version   |
45 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
46 *  |clk_seq_hi_res |  clk_seq_low  |         node (0-1)            |
47 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
48 *  |                         node (2-5)                            |
49 *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
50 *
51 * NOTE: These routines are not part of the DCE RPC API. They are
52 * provided for convenience.
53 */
54
55void
56uuid_enc_le(void *buf, const uuid_t *uuid)
57{
58	uint8_t *p = buf;
59	int i;
60
61	le32enc(p, uuid->time_low);
62	le16enc(p + 4, uuid->time_mid);
63	le16enc(p + 6, uuid->time_hi_and_version);
64	p[8] = uuid->clock_seq_hi_and_reserved;
65	p[9] = uuid->clock_seq_low;
66	for (i = 0; i < _UUID_NODE_LEN; i++)
67		p[10 + i] = uuid->node[i];
68}
69
70void
71uuid_dec_le(const void *buf, uuid_t *uuid)
72{
73	const uint8_t *p = buf;
74	int i;
75
76	uuid->time_low = le32dec(p);
77	uuid->time_mid = le16dec(p + 4);
78	uuid->time_hi_and_version = le16dec(p + 6);
79	uuid->clock_seq_hi_and_reserved = p[8];
80	uuid->clock_seq_low = p[9];
81	for (i = 0; i < _UUID_NODE_LEN; i++)
82		uuid->node[i] = p[10 + i];
83}
84
85void
86uuid_enc_be(void *buf, const uuid_t *uuid)
87{
88	uint8_t *p = buf;
89	int i;
90
91	be32enc(p, uuid->time_low);
92	be16enc(p + 4, uuid->time_mid);
93	be16enc(p + 6, uuid->time_hi_and_version);
94	p[8] = uuid->clock_seq_hi_and_reserved;
95	p[9] = uuid->clock_seq_low;
96	for (i = 0; i < _UUID_NODE_LEN; i++)
97		p[10 + i] = uuid->node[i];
98}
99
100void
101uuid_dec_be(const void *buf, uuid_t *uuid)
102{
103	const uint8_t *p = buf;
104	int i;
105
106	uuid->time_low = be32dec(p);
107	uuid->time_mid = be16dec(p + 4);
108	uuid->time_hi_and_version = be16dec(p + 6);
109	uuid->clock_seq_hi_and_reserved = p[8];
110	uuid->clock_seq_low = p[9];
111	for (i = 0; i < _UUID_NODE_LEN; i++)
112		uuid->node[i] = p[10 + i];
113}
114