4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/** @File
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Internet network address interpretation routine.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This program and the accompanying materials are licensed and made available under
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync the terms and conditions of the BSD License that accompanies this distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync http://opensource.org/licenses/bsd-license.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1983, 1993
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * The Regents of the University of California. All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Redistribution and use in source and binary forms, with or without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * modification, are permitted provided that the following conditions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * are met:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. Redistributions of source code must retain the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. Redistributions in binary form must reproduce the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer in the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * documentation and/or other materials provided with the distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 3. Neither the name of the University nor the names of its contributors
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * may be used to endorse or promote products derived from this software
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * without specific prior written permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * SUCH DAMAGE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync NetBSD: inet_network.c,v 1.1 2004/05/20 23:13:02 christos Exp
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync inet_network.c 8.1 (Berkeley) 6/4/93
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <LibConfig.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include "namespace.h"
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/types.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <netinet/in.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <arpa/inet.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <assert.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <ctype.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef _DIAGNOSTIC
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <stddef.h> /* for NULL */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef __weak_alias
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__weak_alias(inet_network,_inet_network)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Internet network address interpretation routine.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * The library routines call this routine to interpret
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * network numbers.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncin_addr_t
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncinet_network(const char *cp)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync in_addr_t val;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync size_t i, n;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync u_char c;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync in_addr_t parts[4], *pp = parts;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync int digit, base;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _DIAGASSERT(cp != NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncagain:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync val = 0; base = 10; digit = 0;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (*cp == '0')
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync digit = 1, base = 8, cp++;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (*cp == 'x' || *cp == 'X')
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync base = 16, cp++;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync while ((c = *cp) != 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (isdigit(c)) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (base == 8 && (c == '8' || c == '9'))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (INADDR_NONE);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync val = (val * base) + (c - '0');
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync cp++;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync digit = 1;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync continue;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (base == 16 && isxdigit(c)) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A'));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync cp++;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync digit = 1;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync continue;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync break;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (!digit)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (INADDR_NONE);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (*cp == '.') {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (pp >= parts + 4 || val > 0xff)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (INADDR_NONE);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *pp++ = val, cp++;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync goto again;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (*cp && !isspace((u_char) *cp))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (INADDR_NONE);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (pp >= parts + 4 || val > 0xff)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (INADDR_NONE);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *pp++ = val;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync n = pp - parts;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (n > 4)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (INADDR_NONE);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (val = 0, i = 0; i < n; i++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync val <<= 8;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync val |= parts[i] & 0xff;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (val);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}