2N/A/*
2N/A * Copyright (c) 1983, 1993
2N/A * The Regents of the University of California. All rights reserved.
2N/A *
2N/A * Redistribution and use in source and binary forms, with or without
2N/A * modification, are permitted provided that the following conditions
2N/A * are met:
2N/A * 1. Redistributions of source code must retain the above copyright
2N/A * notice, this list of conditions and the following disclaimer.
2N/A * 2. Redistributions in binary form must reproduce the above copyright
2N/A * notice, this list of conditions and the following disclaimer in the
2N/A * documentation and/or other materials provided with the distribution.
2N/A * 3. All advertising materials mentioning features or use of this software
2N/A * must display the following acknowledgement:
2N/A * This product includes software developed by the University of
2N/A * California, Berkeley and its contributors.
2N/A * 4. Neither the name of the University nor the names of its contributors
2N/A * may be used to endorse or promote products derived from this software
2N/A * without specific prior written permission.
2N/A *
2N/A * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
2N/A * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2N/A * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2N/A * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2N/A * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2N/A * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2N/A * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2N/A * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2N/A * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2N/A * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2N/A * SUCH DAMAGE.
2N/A */
2N/A
2N/A#if defined(LIBC_SCCS) && !defined(lint)
2N/Astatic const char sccsid[] = "@(#)inet_network.c 8.1 (Berkeley) 6/4/93";
2N/A#endif /* LIBC_SCCS and not lint */
2N/A
2N/A#include "port_before.h"
2N/A
2N/A#include <sys/types.h>
2N/A#include <netinet/in.h>
2N/A#include <arpa/inet.h>
2N/A#include <ctype.h>
2N/A
2N/A#include "port_after.h"
2N/A
2N/A/*%
2N/A * Internet network address interpretation routine.
2N/A * The library routines call this routine to interpret
2N/A * network numbers.
2N/A */
2N/Au_long
2N/Ainet_network(cp)
2N/A register const char *cp;
2N/A{
2N/A register u_long val, base, n, i;
2N/A register char c;
2N/A u_long parts[4], *pp = parts;
2N/A int digit;
2N/A
2N/Aagain:
2N/A val = 0; base = 10; digit = 0;
2N/A if (*cp == '0')
2N/A digit = 1, base = 8, cp++;
2N/A if (*cp == 'x' || *cp == 'X')
2N/A base = 16, cp++;
2N/A while ((c = *cp) != 0) {
2N/A if (isdigit((unsigned char)c)) {
2N/A if (base == 8U && (c == '8' || c == '9'))
2N/A return (INADDR_NONE);
2N/A val = (val * base) + (c - '0');
2N/A cp++;
2N/A digit = 1;
2N/A continue;
2N/A }
2N/A if (base == 16U && isxdigit((unsigned char)c)) {
2N/A val = (val << 4) +
2N/A (c + 10 - (islower((unsigned char)c) ? 'a' : 'A'));
2N/A cp++;
2N/A digit = 1;
2N/A continue;
2N/A }
2N/A break;
2N/A }
2N/A if (!digit)
2N/A return (INADDR_NONE);
2N/A if (pp >= parts + 4 || val > 0xffU)
2N/A return (INADDR_NONE);
2N/A if (*cp == '.') {
2N/A *pp++ = val, cp++;
2N/A goto again;
2N/A }
2N/A if (*cp && !isspace(*cp&0xff))
2N/A return (INADDR_NONE);
2N/A *pp++ = val;
2N/A n = pp - parts;
2N/A if (n > 4U)
2N/A return (INADDR_NONE);
2N/A for (val = 0, i = 0; i < n; i++) {
2N/A val <<= 8;
2N/A val |= parts[i] & 0xff;
2N/A }
2N/A return (val);
2N/A}
2N/A
2N/A/*! \file */