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-FreeBSD 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/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/endian.h> 35 #include <uuid.h> 36 37 /* 38 * Encode/Decode UUID into octet-stream. 39 * http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt 40 * 41 * 0 1 2 3 42 * 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 43 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 44 * | time_low | 45 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 46 * | time_mid | time_hi_and_version | 47 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 48 * |clk_seq_hi_res | clk_seq_low | node (0-1) | 49 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 50 * | node (2-5) | 51 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 52 * 53 * NOTE: These routines are not part of the DCE RPC API. They are 54 * provided for convenience. 55 */ 56 57 void 58 uuid_enc_le(void *buf, const uuid_t *uuid) 59 { 60 uint8_t *p = buf; 61 int i; 62 63 le32enc(p, uuid->time_low); 64 le16enc(p + 4, uuid->time_mid); 65 le16enc(p + 6, uuid->time_hi_and_version); 66 p[8] = uuid->clock_seq_hi_and_reserved; 67 p[9] = uuid->clock_seq_low; 68 for (i = 0; i < _UUID_NODE_LEN; i++) 69 p[10 + i] = uuid->node[i]; 70 } 71 72 void 73 uuid_dec_le(const void *buf, uuid_t *uuid) 74 { 75 const uint8_t *p = buf; 76 int i; 77 78 uuid->time_low = le32dec(p); 79 uuid->time_mid = le16dec(p + 4); 80 uuid->time_hi_and_version = le16dec(p + 6); 81 uuid->clock_seq_hi_and_reserved = p[8]; 82 uuid->clock_seq_low = p[9]; 83 for (i = 0; i < _UUID_NODE_LEN; i++) 84 uuid->node[i] = p[10 + i]; 85 } 86 87 void 88 uuid_enc_be(void *buf, const uuid_t *uuid) 89 { 90 uint8_t *p = buf; 91 int i; 92 93 be32enc(p, uuid->time_low); 94 be16enc(p + 4, uuid->time_mid); 95 be16enc(p + 6, uuid->time_hi_and_version); 96 p[8] = uuid->clock_seq_hi_and_reserved; 97 p[9] = uuid->clock_seq_low; 98 for (i = 0; i < _UUID_NODE_LEN; i++) 99 p[10 + i] = uuid->node[i]; 100 } 101 102 void 103 uuid_dec_be(const void *buf, uuid_t *uuid) 104 { 105 const uint8_t *p = buf; 106 int i; 107 108 uuid->time_low = be32dec(p); 109 uuid->time_mid = be16dec(p + 4); 110 uuid->time_hi_and_version = be16dec(p + 6); 111 uuid->clock_seq_hi_and_reserved = p[8]; 112 uuid->clock_seq_low = p[9]; 113 for (i = 0; i < _UUID_NODE_LEN; i++) 114 uuid->node[i] = p[10 + i]; 115 } 116