1 /* $NetBSD: uuid_stream.c,v 1.3 2008/04/19 18:21:38 plunky Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2002 Marcel Moolenaar
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/endian.h>
32 #include <uuid.h>
33
34 /*
35 * Encode/Decode UUID into octet-stream.
36 * http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
37 *
38 * 0 1 2 3
39 * 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
40 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
41 * | time_low |
42 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
43 * | time_mid | time_hi_and_version |
44 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
45 * |clk_seq_hi_res | clk_seq_low | node (0-1) |
46 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
47 * | node (2-5) |
48 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
49 *
50 * NOTE: These routines are not part of the DCE RPC API. They are
51 * provided for convenience.
52 */
53
54 void
uuid_enc_le(void * buf,const uuid_t * uuid)55 uuid_enc_le(void *buf, const uuid_t *uuid)
56 {
57 uint8_t *p = buf;
58 int i;
59
60 le32enc(p, uuid->time_low);
61 le16enc(p + 4, uuid->time_mid);
62 le16enc(p + 6, uuid->time_hi_and_version);
63 p[8] = uuid->clock_seq_hi_and_reserved;
64 p[9] = uuid->clock_seq_low;
65 for (i = 0; i < _UUID_NODE_LEN; i++)
66 p[10 + i] = uuid->node[i];
67 }
68
69 void
uuid_dec_le(const void * buf,uuid_t * uuid)70 uuid_dec_le(const void *buf, uuid_t *uuid)
71 {
72 const uint8_t *p = buf;
73 int i;
74
75 uuid->time_low = le32dec(p);
76 uuid->time_mid = le16dec(p + 4);
77 uuid->time_hi_and_version = le16dec(p + 6);
78 uuid->clock_seq_hi_and_reserved = p[8];
79 uuid->clock_seq_low = p[9];
80 for (i = 0; i < _UUID_NODE_LEN; i++)
81 uuid->node[i] = p[10 + i];
82 }
83
84 void
uuid_enc_be(void * buf,const uuid_t * uuid)85 uuid_enc_be(void *buf, const uuid_t *uuid)
86 {
87 uint8_t *p = buf;
88 int i;
89
90 be32enc(p, uuid->time_low);
91 be16enc(p + 4, uuid->time_mid);
92 be16enc(p + 6, uuid->time_hi_and_version);
93 p[8] = uuid->clock_seq_hi_and_reserved;
94 p[9] = uuid->clock_seq_low;
95 for (i = 0; i < _UUID_NODE_LEN; i++)
96 p[10 + i] = uuid->node[i];
97 }
98
99 void
uuid_dec_be(const void * buf,uuid_t * uuid)100 uuid_dec_be(const void *buf, uuid_t *uuid)
101 {
102 const uint8_t *p = buf;
103 int i;
104
105 uuid->time_low = be32dec(p);
106 uuid->time_mid = be16dec(p + 4);
107 uuid->time_hi_and_version = be16dec(p + 6);
108 uuid->clock_seq_hi_and_reserved = p[8];
109 uuid->clock_seq_low = p[9];
110 for (i = 0; i < _UUID_NODE_LEN; i++)
111 uuid->node[i] = p[10 + i];
112 }
113