1bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman/* $OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $ */ 2bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 3bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman/* 4bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * Copyright (c) 2004 Ted Unangst and Todd Miller 5bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * All rights reserved. 6bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * 7bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * Permission to use, copy, modify, and distribute this software for any 8bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * purpose with or without fee is hereby granted, provided that the above 9bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * copyright notice and this permission notice appear in all copies. 10bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * 11bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman */ 19bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 20bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman/* OPENBSD ORIGINAL: lib/libc/stdlib/strtonum.c */ 21bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 22bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#include "includes.h" 23bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 24bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#ifndef HAVE_STRTONUM 25bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#include <stdlib.h> 26bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#include <limits.h> 27bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#include <errno.h> 28bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 29bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#define INVALID 1 30bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#define TOOSMALL 2 31bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#define TOOLARGE 3 32bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 33bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartmanlong long 34bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartmanstrtonum(const char *numstr, long long minval, long long maxval, 35bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman const char **errstrp) 36bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman{ 37bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman long long ll = 0; 38bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman char *ep; 39bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman int error = 0; 40bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman struct errval { 41bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman const char *errstr; 42bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman int err; 43bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman } ev[4] = { 44bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman { NULL, 0 }, 45bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman { "invalid", EINVAL }, 46bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman { "too small", ERANGE }, 47bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman { "too large", ERANGE }, 48bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman }; 49bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 50bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman ev[0].err = errno; 51bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman errno = 0; 52bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman if (minval > maxval) 53bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman error = INVALID; 54bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman else { 55bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman ll = strtoll(numstr, &ep, 10); 56bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman if (numstr == ep || *ep != '\0') 57bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman error = INVALID; 58bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval) 59bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman error = TOOSMALL; 60bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval) 61bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman error = TOOLARGE; 62bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman } 63bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman if (errstrp != NULL) 64bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman *errstrp = ev[error].errstr; 65bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman errno = ev[error].err; 66bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman if (error) 67bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman ll = 0; 68bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 69bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman return (ll); 70bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman} 71bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman 72bd77cf78387b72b7b3ea870459077672bf75c3b5Greg Hartman#endif /* HAVE_STRTONUM */ 73