uuid_to_string.c revision 297790
1106184Smarcel/*- 2139601Smarcel * Copyright (c) 2002,2005 Marcel Moolenaar 3106184Smarcel * Copyright (c) 2002 Hiten Mahesh Pandya 4106184Smarcel * All rights reserved. 5106184Smarcel * 6106184Smarcel * Redistribution and use in source and binary forms, with or without 7106184Smarcel * modification, are permitted provided that the following conditions 8106184Smarcel * are met: 9106184Smarcel * 1. Redistributions of source code must retain the above copyright 10106184Smarcel * notice, this list of conditions and the following disclaimer. 11106184Smarcel * 2. Redistributions in binary form must reproduce the above copyright 12106184Smarcel * notice, this list of conditions and the following disclaimer in the 13106184Smarcel * documentation and/or other materials provided with the distribution. 14106184Smarcel * 15106184Smarcel * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16106184Smarcel * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17106184Smarcel * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18106184Smarcel * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19106184Smarcel * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20106184Smarcel * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21106184Smarcel * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22106184Smarcel * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23106184Smarcel * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24106184Smarcel * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25106184Smarcel * SUCH DAMAGE. 26106184Smarcel * 27106184Smarcel * $FreeBSD: head/lib/libc/uuid/uuid_to_string.c 297790 2016-04-10 19:33:58Z pfg $ 28106184Smarcel */ 29106184Smarcel 30106184Smarcel#include <stdio.h> 31106184Smarcel#include <string.h> 32106184Smarcel#include <uuid.h> 33106184Smarcel 34106184Smarcel/* 35106184Smarcel * uuid_to_string() - Convert a binary UUID into a string representation. 36106184Smarcel * See also: 37106184Smarcel * http://www.opengroup.org/onlinepubs/009629399/uuid_to_string.htm 38106184Smarcel * 39106184Smarcel * NOTE: The references given above do not have a status code for when 40106184Smarcel * the string could not be allocated. The status code has been 41106184Smarcel * taken from the Hewlett-Packard implementation. 42106184Smarcel */ 43106184Smarcelvoid 44139601Smarceluuid_to_string(const uuid_t *u, char **s, uint32_t *status) 45106184Smarcel{ 46106184Smarcel uuid_t nil; 47106184Smarcel 48106184Smarcel if (status != NULL) 49106184Smarcel *status = uuid_s_ok; 50106184Smarcel 51106184Smarcel /* Why allow a NULL-pointer here? */ 52297790Spfg if (s == NULL) 53106184Smarcel return; 54106184Smarcel 55106184Smarcel if (u == NULL) { 56106184Smarcel u = &nil; 57139601Smarcel uuid_create_nil(&nil, NULL); 58106184Smarcel } 59106184Smarcel 60106184Smarcel asprintf(s, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", 61106184Smarcel u->time_low, u->time_mid, u->time_hi_and_version, 62106184Smarcel u->clock_seq_hi_and_reserved, u->clock_seq_low, u->node[0], 63106184Smarcel u->node[1], u->node[2], u->node[3], u->node[4], u->node[5]); 64106184Smarcel 65106184Smarcel if (*s == NULL && status != NULL) 66106184Smarcel *status = uuid_s_no_memory; 67106184Smarcel} 68