/* $OpenBSD: kern_uuid.c,v 1.2 2014/08/31 20:15:54 miod Exp $ */ /* $NetBSD: kern_uuid.c,v 1.18 2011/11/19 22:51:25 tls Exp $ */ /*- * Copyright (c) 2002 Marcel Moolenaar * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD: /repoman/r/ncvs/src/sys/kern/kern_uuid.c,v 1.7 2004/01/12 13:34:11 rse Exp $ */ /*- * Copyright (c) 2002 Thomas Moestl * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/sys/endian.h,v 1.7 2010/05/20 06:16:13 phk Exp $ */ #include #include #include #include /* * For a description of UUIDs see RFC 4122. */ struct uuid_private { struct { uint32_t low; uint16_t mid; uint16_t hi; } time; uint16_t seq; uint16_t node[_UUID_NODE_LEN>>1]; }; #ifdef DEBUG int uuid_snprintf(char *buf, size_t sz, const struct uuid *uuid) { const struct uuid_private *id; int cnt; id = (const struct uuid_private *)uuid; cnt = snprintf(buf, sz, "%08x-%04x-%04x-%04x-%04x%04x%04x", id->time.low, id->time.mid, id->time.hi, betoh16(id->seq), betoh16(id->node[0]), betoh16(id->node[1]), betoh16(id->node[2])); return (cnt); } int uuid_printf(const struct uuid *uuid) { char buf[_UUID_BUF_LEN]; (void) uuid_snprintf(buf, sizeof(buf), uuid); printf("%s", buf); return (0); } #endif /* * Encode/Decode UUID into octet-stream. * http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt * * 0 1 2 3 * 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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | time_low | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | time_mid | time_hi_and_version | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * |clk_seq_hi_res | clk_seq_low | node (0-1) | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | node (2-5) | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ /* Alignment-agnostic encode/decode bytestream to/from little/big endian. */ static __inline uint16_t be16dec(const void *pp) { uint8_t const *p = (uint8_t const *)pp; return ((p[0] << 8) | p[1]); } static __inline uint32_t be32dec(const void *pp) { uint8_t const *p = (uint8_t const *)pp; return (((unsigned)p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]); } static __inline uint16_t le16dec(const void *pp) { uint8_t const *p = (uint8_t const *)pp; return ((p[1] << 8) | p[0]); } static __inline uint32_t le32dec(const void *pp) { uint8_t const *p = (uint8_t const *)pp; return (((unsigned)p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]); } static __inline void be16enc(void *pp, uint16_t u) { uint8_t *p = (uint8_t *)pp; p[0] = (u >> 8) & 0xff; p[1] = u & 0xff; } static __inline void be32enc(void *pp, uint32_t u) { uint8_t *p = (uint8_t *)pp; p[0] = (u >> 24) & 0xff; p[1] = (u >> 16) & 0xff; p[2] = (u >> 8) & 0xff; p[3] = u & 0xff; } static __inline void le16enc(void *pp, uint16_t u) { uint8_t *p = (uint8_t *)pp; p[0] = u & 0xff; p[1] = (u >> 8) & 0xff; } static __inline void le32enc(void *pp, uint32_t u) { uint8_t *p = (uint8_t *)pp; p[0] = u & 0xff; p[1] = (u >> 8) & 0xff; p[2] = (u >> 16) & 0xff; p[3] = (u >> 24) & 0xff; } void uuid_enc_le(void *buf, const struct uuid *uuid) { uint8_t *p = buf; int i; le32enc(p, uuid->time_low); le16enc(p + 4, uuid->time_mid); le16enc(p + 6, uuid->time_hi_and_version); p[8] = uuid->clock_seq_hi_and_reserved; p[9] = uuid->clock_seq_low; for (i = 0; i < _UUID_NODE_LEN; i++) p[10 + i] = uuid->node[i]; } void uuid_dec_le(const void *buf, struct uuid *uuid) { const uint8_t *p = buf; int i; uuid->time_low = le32dec(p); uuid->time_mid = le16dec(p + 4); uuid->time_hi_and_version = le16dec(p + 6); uuid->clock_seq_hi_and_reserved = p[8]; uuid->clock_seq_low = p[9]; for (i = 0; i < _UUID_NODE_LEN; i++) uuid->node[i] = p[10 + i]; } void uuid_enc_be(void *buf, const struct uuid *uuid) { uint8_t *p = buf; int i; be32enc(p, uuid->time_low); be16enc(p + 4, uuid->time_mid); be16enc(p + 6, uuid->time_hi_and_version); p[8] = uuid->clock_seq_hi_and_reserved; p[9] = uuid->clock_seq_low; for (i = 0; i < _UUID_NODE_LEN; i++) p[10 + i] = uuid->node[i]; } void uuid_dec_be(const void *buf, struct uuid *uuid) { const uint8_t *p = buf; int i; uuid->time_low = be32dec(p); uuid->time_mid = be16dec(p + 4); uuid->time_hi_and_version = be16dec(p + 6); uuid->clock_seq_hi_and_reserved = p[8]; uuid->clock_seq_low = p[9]; for (i = 0; i < _UUID_NODE_LEN; i++) uuid->node[i] = p[10 + i]; }