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 #if defined(LIBC_SCCS) && !defined(lint) 31 __RCSID("$NetBSD: uuid_stream.c,v 1.3 2008/04/19 18:21:38 plunky Exp $"); 32 #endif 33 34 #include "namespace.h" 35 36 #include <machine/endian.h> 37 #include <uuid.h> 38 39 /* 40 * Encode/Decode UUID into octet-stream. 41 * http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt 42 * 43 * 0 1 2 3 44 * 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 45 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 46 * | time_low | 47 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 48 * | time_mid | time_hi_and_version | 49 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 50 * |clk_seq_hi_res | clk_seq_low | node (0-1) | 51 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 52 * | node (2-5) | 53 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 54 * 55 * NOTE: These routines are not part of the DCE RPC API. There are 56 * provided for convenience. 57 */ 58 59 void 60 uuid_enc_le(void *buf, const uuid_t *uuid) 61 { 62 uint8_t *p = buf; 63 int i; 64 65 le32enc(p, uuid->time_low); 66 le16enc(p + 4, uuid->time_mid); 67 le16enc(p + 6, uuid->time_hi_and_version); 68 p[8] = uuid->clock_seq_hi_and_reserved; 69 p[9] = uuid->clock_seq_low; 70 for (i = 0; i < _UUID_NODE_LEN; i++) 71 p[10 + i] = uuid->node[i]; 72 } 73 74 void 75 uuid_dec_le(const void *buf, uuid_t *uuid) 76 { 77 const uint8_t *p = buf; 78 int i; 79 80 uuid->time_low = le32dec(p); 81 uuid->time_mid = le16dec(p + 4); 82 uuid->time_hi_and_version = le16dec(p + 6); 83 uuid->clock_seq_hi_and_reserved = p[8]; 84 uuid->clock_seq_low = p[9]; 85 for (i = 0; i < _UUID_NODE_LEN; i++) 86 uuid->node[i] = p[10 + i]; 87 } 88 89 void 90 uuid_enc_be(void *buf, const uuid_t *uuid) 91 { 92 uint8_t *p = buf; 93 int i; 94 95 be32enc(p, uuid->time_low); 96 be16enc(p + 4, uuid->time_mid); 97 be16enc(p + 6, uuid->time_hi_and_version); 98 p[8] = uuid->clock_seq_hi_and_reserved; 99 p[9] = uuid->clock_seq_low; 100 for (i = 0; i < _UUID_NODE_LEN; i++) 101 p[10 + i] = uuid->node[i]; 102 } 103 104 void 105 uuid_dec_be(const void *buf, uuid_t *uuid) 106 { 107 const uint8_t *p = buf; 108 int i; 109 110 uuid->time_low = be32dec(p); 111 uuid->time_mid = be16dec(p + 4); 112 uuid->time_hi_and_version = be16dec(p + 6); 113 uuid->clock_seq_hi_and_reserved = p[8]; 114 uuid->clock_seq_low = p[9]; 115 for (i = 0; i < _UUID_NODE_LEN; i++) 116 uuid->node[i] = p[10 + i]; 117 } 118