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 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 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 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 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