GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/uuid/uuid_from_string.c Lines: 0 23 0.0 %
Date: 2017-11-13 Branches: 0 22 0.0 %

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/*	$OpenBSD: uuid_from_string.c,v 1.2 2015/09/10 18:13:46 guenther Exp $	*/
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/*	$NetBSD: uuid_from_string.c,v 1.1 2004/09/13 21:44:54 thorpej Exp $	*/
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/*
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 * Copyright (c) 2002 Marcel Moolenaar
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 * Copyright (c) 2002 Hiten Mahesh Pandya
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * $FreeBSD: src/lib/libc/uuid/uuid_from_string.c,v 1.2 2003/08/08 19:18:43 marcel Exp $
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 */
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#include <stdio.h>
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#include <string.h>
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#include <uuid.h>
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/*
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 * uuid_from_string() - convert a string representation of an UUID into
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 *			a binary representation.
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 * See also:
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 *	http://www.opengroup.org/onlinepubs/009629399/uuid_from_string.htm
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 *
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 * NOTE: The sequence field is in big-endian, while the time fields are in
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 *	 native byte order.
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 */
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void
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uuid_from_string(const char *s, uuid_t *u, uint32_t *status)
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{
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	int n;
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	/* Short-circuit 2 special cases: NULL pointer and empty string. */
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	if (s == NULL || *s == '\0') {
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		uuid_create_nil(u, status);
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		return;
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	}
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	/* Assume the worst. */
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	if (status != NULL)
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		*status = uuid_s_invalid_string_uuid;
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	/* The UUID string representation has a fixed length. */
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	if (strlen(s) != UUID_STR_LEN)
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		return;
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	/*
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	 * We only work with "new" UUIDs. New UUIDs have the form:
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	 *	01234567-89ab-cdef-0123-456789abcdef
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	 * The so called "old" UUIDs, which we don't support, have the form:
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	 *	0123456789ab.cd.ef.01.23.45.67.89.ab
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	 */
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	if (s[8] != '-')
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		return;
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	n = sscanf(s,
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	    "%8x-%4hx-%4hx-%2hhx%2hhx-%2hhx%2hhx%2hhx%2hhx%2hhx%2hhx",
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	    &u->time_low, &u->time_mid, &u->time_hi_and_version,
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	    &u->clock_seq_hi_and_reserved, &u->clock_seq_low, &u->node[0],
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	    &u->node[1], &u->node[2], &u->node[3], &u->node[4], &u->node[5]);
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	/* Make sure we have all conversions. */
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	if (n != 11)
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		return;
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	/* We have a successful scan. Check semantics... */
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	n = u->clock_seq_hi_and_reserved;
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	if ((n & 0x80) != 0x00 &&			/* variant 0? */
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	    (n & 0xc0) != 0x80 &&			/* variant 1? */
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	    (n & 0xe0) != 0xc0) {			/* variant 2? */
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		if (status != NULL)
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			*status = uuid_s_bad_version;
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	} else {
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		if (status != NULL)
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			*status = uuid_s_ok;
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	}
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}