00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/* $NetBSD: parseint.c,v 1.5 2014/12/10 04:37:59 christos Exp $ */
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/*
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* Copyright (C) 2004, 2005, 2007, 2012 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2001-2003 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: parseint.c,v 1.8 2007/06/19 23:47:17 tbox Exp */
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/*! \file */
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#include <config.h>
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#include <ctype.h>
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#include <errno.h>
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#include <limits.h>
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#include <isc/parseint.h>
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#include <isc/result.h>
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#include <isc/stdlib.h>
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isc_result_t
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isc_parse_uint32(isc_uint32_t *uip, const char *string, int base) {
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unsigned long n;
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isc_uint32_t r;
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char *e;
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if (! isalnum((unsigned char)(string[0])))
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return (ISC_R_BADNUMBER);
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errno = 0;
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n = strtoul(string, &e, base);
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if (*e != '\0')
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return (ISC_R_BADNUMBER);
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/*
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* Where long is 64 bits we need to convert to 32 bits then test for
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* equality. This is a no-op on 32 bit machines and a good compiler
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* will optimise it away.
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*/
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r = (isc_uint32_t)n;
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if ((n == ULONG_MAX && errno == ERANGE) || (n != (unsigned long)r))
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return (ISC_R_RANGE);
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*uip = r;
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return (ISC_R_SUCCESS);
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}
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isc_result_t
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isc_parse_uint16(isc_uint16_t *uip, const char *string, int base) {
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isc_uint32_t val;
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isc_result_t result;
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result = isc_parse_uint32(&val, string, base);
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if (result != ISC_R_SUCCESS)
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return (result);
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if (val > 0xFFFF)
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return (ISC_R_RANGE);
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*uip = (isc_uint16_t) val;
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return (ISC_R_SUCCESS);
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}
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isc_result_t
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isc_parse_uint8(isc_uint8_t *uip, const char *string, int base) {
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isc_uint32_t val;
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isc_result_t result;
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result = isc_parse_uint32(&val, string, base);
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if (result != ISC_R_SUCCESS)
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return (result);
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if (val > 0xFF)
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return (ISC_R_RANGE);
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*uip = (isc_uint8_t) val;
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return (ISC_R_SUCCESS);
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}
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