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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2001 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#include "lint.h"
#include <sys/types.h>
#include <netinet/in.h>
#include <ctype.h>
/*
* Internet network address interpretation routine.
* The library routines call this routine to interpret
* network numbers.
*/
in_addr_t
inet_network(const char *cp)
{
in_addr_t val;
int base;
ptrdiff_t n;
char c;
in_addr_t parts[4], *pp = parts;
int i;
again:
val = 0; base = 10;
if (*cp == '0') {
if (*++cp == 'x' || *cp == 'X')
base = 16, cp++;
else
base = 8;
}
while ((c = *cp) != '\0') {
if (isdigit(c)) {
if ((c - '0') >= base)
break;
val = (val * base) + (c - '0');
cp++;
continue;
}
if (base == 16 && isxdigit(c)) {
val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A'));
cp++;
continue;
}
break;
}
if (pp >= parts + 4 || val > 0xff)
return ((in_addr_t)-1);
*pp++ = val;
if (*cp == '.') {
cp++;
goto again;
}
if (*cp != '\0' && !isspace(*cp))
return ((in_addr_t)-1);
n = pp - parts;
for (val = 0, i = 0; i < n; i++) {
val <<= 8;
val |= parts[i];
}
return (val);
}
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