1 /* $OpenBSD: uuid_to_string.c,v 1.2 2015/09/10 18:13:46 guenther Exp $ */ 2 /* $NetBSD: uuid_to_string.c,v 1.2 2008/04/23 07:52:32 plunky Exp $ */ 3 4 /* 5 * Copyright (c) 2002 Marcel Moolenaar 6 * Copyright (c) 2002 Hiten Mahesh Pandya 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 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD: src/lib/libc/uuid/uuid_to_string.c,v 1.2 2003/08/08 19:18:43 marcel Exp $ 31 */ 32 33 #include <stdio.h> 34 #include <string.h> 35 #include <uuid.h> 36 37 /* 38 * uuid_to_string() - Convert a binary UUID into a string representation. 39 * See also: 40 * http://www.opengroup.org/onlinepubs/009629399/uuid_to_string.htm 41 * 42 * NOTE: The references given above do not have a status code for when 43 * the string could not be allocated. The status code has been 44 * taken from the Hewlett-Packard implementation. 45 */ 46 void 47 uuid_to_string(const uuid_t *u, char **s, uint32_t *status) 48 { 49 int c; 50 static const uuid_t nil = { .time_low = 0 }; 51 52 if (status != NULL) 53 *status = uuid_s_ok; 54 55 /* Why allow a NULL-pointer here? */ 56 if (s == NULL) 57 return; 58 59 if (u == NULL) 60 u = &nil; 61 62 c = asprintf(s, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", 63 u->time_low, u->time_mid, u->time_hi_and_version, 64 u->clock_seq_hi_and_reserved, u->clock_seq_low, u->node[0], 65 u->node[1], u->node[2], u->node[3], u->node[4], u->node[5]); 66 67 if (c == -1 && status != NULL) 68 *status = uuid_s_no_memory; 69 } 70