1/*	$NetBSD: parseint.c,v 1.2.6.1 2012/06/05 21:15:07 bouyer Exp $	*/
2
3/*
4 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 2001-2003  Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* Id: parseint.c,v 1.8 2007/06/19 23:47:17 tbox Exp  */
21
22/*! \file */
23
24#include <config.h>
25
26#include <ctype.h>
27#include <errno.h>
28#include <limits.h>
29
30#include <isc/parseint.h>
31#include <isc/result.h>
32#include <isc/stdlib.h>
33
34isc_result_t
35isc_parse_uint32(isc_uint32_t *uip, const char *string, int base) {
36	unsigned long n;
37	char *e;
38	if (! isalnum((unsigned char)(string[0])))
39		return (ISC_R_BADNUMBER);
40	errno = 0;
41	n = strtoul(string, &e, base);
42	if (*e != '\0')
43		return (ISC_R_BADNUMBER);
44	if (n == ULONG_MAX && errno == ERANGE)
45		return (ISC_R_RANGE);
46	*uip = n;
47	return (ISC_R_SUCCESS);
48}
49
50isc_result_t
51isc_parse_uint16(isc_uint16_t *uip, const char *string, int base) {
52	isc_uint32_t val;
53	isc_result_t result;
54	result = isc_parse_uint32(&val, string, base);
55	if (result != ISC_R_SUCCESS)
56		return (result);
57	if (val > 0xFFFF)
58		return (ISC_R_RANGE);
59	*uip = (isc_uint16_t) val;
60	return (ISC_R_SUCCESS);
61}
62
63isc_result_t
64isc_parse_uint8(isc_uint8_t *uip, const char *string, int base) {
65	isc_uint32_t val;
66	isc_result_t result;
67	result = isc_parse_uint32(&val, string, base);
68	if (result != ISC_R_SUCCESS)
69		return (result);
70	if (val > 0xFF)
71		return (ISC_R_RANGE);
72	*uip = (isc_uint8_t) val;
73	return (ISC_R_SUCCESS);
74}
75