//==========================================================================
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//==========================================================================
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//
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//
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// src/inet_pton.c
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// src/inet_pton.c
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//
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//
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//==========================================================================
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//==========================================================================
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//####BSDCOPYRIGHTBEGIN####
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//####BSDCOPYRIGHTBEGIN####
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//
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//
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// -------------------------------------------
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// -------------------------------------------
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//
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//
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// Portions of this software may have been derived from OpenBSD,
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// Portions of this software may have been derived from OpenBSD,
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// FreeBSD or other sources, and are covered by the appropriate
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// FreeBSD or other sources, and are covered by the appropriate
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// copyright disclaimers included herein.
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// copyright disclaimers included herein.
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//
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//
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// Portions created by Red Hat are
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// Portions created by Red Hat are
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// Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
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// Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
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//
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//
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// -------------------------------------------
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// -------------------------------------------
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//
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//
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//####BSDCOPYRIGHTEND####
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//####BSDCOPYRIGHTEND####
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//==========================================================================
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//==========================================================================
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/* $KAME: inet_pton.c,v 1.5 2001/08/20 02:32:40 itojun Exp $ */
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/* $KAME: inet_pton.c,v 1.5 2001/08/20 02:32:40 itojun Exp $ */
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/*
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/*
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* Copyright (c) 1996,1999 by Internet Software Consortium.
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* Copyright (c) 1996,1999 by Internet Software Consortium.
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*
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*
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* Permission to use, copy, modify, and distribute this software for any
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* Permission to use, copy, modify, and 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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* 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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* copyright notice and this permission notice appear in all copies.
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*
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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* SOFTWARE.
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*/
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*/
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//#if defined(LIBC_SCCS) && !defined(lint)
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//#if defined(LIBC_SCCS) && !defined(lint)
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//static char rcsid[] = "$Id: inet_pton.c,v 1.1.1.1 2004-02-14 13:32:54 phoenix Exp $";
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//static char rcsid[] = "$Id: inet_pton.c,v 1.1.1.1 2004-02-14 13:32:54 phoenix Exp $";
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//#endif /* LIBC_SCCS and not lint */
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//#endif /* LIBC_SCCS and not lint */
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//#ifdef HAVE_CONFIG_H
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//#ifdef HAVE_CONFIG_H
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//#include <config.h>
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//#include <config.h>
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//#endif
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//#endif
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#include <sys/param.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <arpa/inet.h>
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#include <arpa/nameser.h>
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#include <arpa/nameser.h>
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#include <string.h>
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#include <string.h>
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#include <errno.h>
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#include <errno.h>
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//#ifndef HAVE_PORTABLE_PROTOTYPE
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//#ifndef HAVE_PORTABLE_PROTOTYPE
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//#include "cdecl_ext.h"
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//#include "cdecl_ext.h"
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//#endif
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//#endif
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//#ifndef HAVE_U_INT16_T
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//#ifndef HAVE_U_INT16_T
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//#include "bittypes.h"
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//#include "bittypes.h"
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//#endif
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//#endif
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//#if !(defined(HAVE_INADDRSZ) && defined(HAVE_IN6ADDRSZ))
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//#if !(defined(HAVE_INADDRSZ) && defined(HAVE_IN6ADDRSZ))
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//#include "addrsize.h"
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//#include "addrsize.h"
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//#endif
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//#endif
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#define NS_INADDRSZ 4 /* IPv4 T_A */
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#define NS_INADDRSZ 4 /* IPv4 T_A */
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#define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */
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#define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */
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#ifndef NS_INADDRSZ
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#ifndef NS_INADDRSZ
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#define NS_INADDRSZ INADDRSZ
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#define NS_INADDRSZ INADDRSZ
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#endif
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#endif
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#ifndef NS_IN6ADDRSZ
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#ifndef NS_IN6ADDRSZ
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#define NS_IN6ADDRSZ IN6ADDRSZ
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#define NS_IN6ADDRSZ IN6ADDRSZ
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#endif
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#endif
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#ifndef NS_INT16SZ
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#ifndef NS_INT16SZ
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#define NS_INT16SZ sizeof(u_int16_t)
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#define NS_INT16SZ sizeof(u_int16_t)
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#endif
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#endif
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/*
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/*
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* WARNING: Don't even consider trying to compile this on a system where
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* WARNING: Don't even consider trying to compile this on a system where
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* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
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* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
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*/
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*/
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static int inet_pton4 __P((const char *src, u_char *dst));
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static int inet_pton4 __P((const char *src, u_char *dst));
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#ifdef CYGPKG_NET_INET6
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#ifdef CYGPKG_NET_INET6
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static int inet_pton6 __P((const char *src, u_char *dst));
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static int inet_pton6 __P((const char *src, u_char *dst));
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#endif
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#endif
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/* int
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/* int
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* inet_pton(af, src, dst)
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* inet_pton(af, src, dst)
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* convert from presentation format (which usually means ASCII printable)
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* convert from presentation format (which usually means ASCII printable)
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* to network format (which is usually some kind of binary format).
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* to network format (which is usually some kind of binary format).
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* return:
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* return:
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* 1 if the address was valid for the specified address family
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* 1 if the address was valid for the specified address family
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* 0 if the address wasn't valid (`dst' is untouched in this case)
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* 0 if the address wasn't valid (`dst' is untouched in this case)
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* -1 if some other error occurred (`dst' is untouched in this case, too)
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* -1 if some other error occurred (`dst' is untouched in this case, too)
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* author:
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* author:
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* Paul Vixie, 1996.
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* Paul Vixie, 1996.
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*/
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*/
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int
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int
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inet_pton(int af, const char *src, void *dst)
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inet_pton(int af, const char *src, void *dst)
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{
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{
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switch (af) {
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switch (af) {
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case AF_INET:
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case AF_INET:
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return (inet_pton4(src, dst));
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return (inet_pton4(src, dst));
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#ifdef CYGPKG_NET_INET6
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#ifdef CYGPKG_NET_INET6
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case AF_INET6:
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case AF_INET6:
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return (inet_pton6(src, dst));
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return (inet_pton6(src, dst));
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#endif
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#endif
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default:
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default:
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errno = EAFNOSUPPORT;
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errno = EAFNOSUPPORT;
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return (-1);
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return (-1);
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}
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}
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/* NOTREACHED */
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/* NOTREACHED */
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}
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}
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/* int
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/* int
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* inet_pton4(src, dst)
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* inet_pton4(src, dst)
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* like inet_aton() but without all the hexadecimal and shorthand.
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* like inet_aton() but without all the hexadecimal and shorthand.
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* return:
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* return:
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* 1 if `src' is a valid dotted quad, else 0.
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* 1 if `src' is a valid dotted quad, else 0.
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* notice:
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* notice:
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* does not touch `dst' unless it's returning 1.
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* does not touch `dst' unless it's returning 1.
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* author:
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* author:
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* Paul Vixie, 1996.
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* Paul Vixie, 1996.
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*/
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*/
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static int
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static int
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inet_pton4(const char *src, u_char *dst)
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inet_pton4(const char *src, u_char *dst)
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{
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{
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static const char digits[] = "0123456789";
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static const char digits[] = "0123456789";
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int saw_digit, octets, ch;
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int saw_digit, octets, ch;
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u_char tmp[NS_INADDRSZ], *tp;
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u_char tmp[NS_INADDRSZ], *tp;
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saw_digit = 0;
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saw_digit = 0;
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octets = 0;
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octets = 0;
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*(tp = tmp) = 0;
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*(tp = tmp) = 0;
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while ((ch = *src++) != '\0') {
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while ((ch = *src++) != '\0') {
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const char *pch;
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const char *pch;
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if ((pch = strchr(digits, ch)) != NULL) {
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if ((pch = strchr(digits, ch)) != NULL) {
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u_int new = *tp * 10 + (pch - digits);
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u_int new = *tp * 10 + (pch - digits);
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if (new > 255)
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if (new > 255)
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return (0);
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return (0);
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*tp = new;
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*tp = new;
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if (! saw_digit) {
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if (! saw_digit) {
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if (++octets > 4)
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if (++octets > 4)
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return (0);
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return (0);
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saw_digit = 1;
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saw_digit = 1;
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}
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}
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} else if (ch == '.' && saw_digit) {
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} else if (ch == '.' && saw_digit) {
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if (octets == 4)
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if (octets == 4)
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return (0);
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return (0);
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*++tp = 0;
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*++tp = 0;
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saw_digit = 0;
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saw_digit = 0;
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} else
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} else
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return (0);
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return (0);
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}
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}
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if (octets < 4)
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if (octets < 4)
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return (0);
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return (0);
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memcpy(dst, tmp, NS_INADDRSZ);
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memcpy(dst, tmp, NS_INADDRSZ);
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return (1);
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return (1);
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}
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}
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#ifdef CYGPKG_NET_INET6
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#ifdef CYGPKG_NET_INET6
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/* int
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/* int
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* inet_pton6(src, dst)
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* inet_pton6(src, dst)
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* convert presentation level address to network order binary form.
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* convert presentation level address to network order binary form.
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* return:
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* return:
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* 1 if `src' is a valid [RFC1884 2.2] address, else 0.
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* 1 if `src' is a valid [RFC1884 2.2] address, else 0.
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* notice:
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* notice:
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* (1) does not touch `dst' unless it's returning 1.
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* (1) does not touch `dst' unless it's returning 1.
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* (2) :: in a full address is silently ignored.
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* (2) :: in a full address is silently ignored.
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* credit:
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* credit:
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* inspired by Mark Andrews.
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* inspired by Mark Andrews.
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* author:
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* author:
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* Paul Vixie, 1996.
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* Paul Vixie, 1996.
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*/
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*/
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static int
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static int
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inet_pton6(const char *src, u_char *dst)
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inet_pton6(const char *src, u_char *dst)
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{
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{
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static const char xdigits_l[] = "0123456789abcdef",
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static const char xdigits_l[] = "0123456789abcdef",
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xdigits_u[] = "0123456789ABCDEF";
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xdigits_u[] = "0123456789ABCDEF";
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u_char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
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u_char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
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const char *xdigits, *curtok;
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const char *xdigits, *curtok;
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int ch, saw_xdigit;
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int ch, saw_xdigit;
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u_int val;
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u_int val;
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memset((tp = tmp), '\0', NS_IN6ADDRSZ);
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memset((tp = tmp), '\0', NS_IN6ADDRSZ);
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endp = tp + NS_IN6ADDRSZ;
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endp = tp + NS_IN6ADDRSZ;
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colonp = NULL;
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colonp = NULL;
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/* Leading :: requires some special handling. */
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/* Leading :: requires some special handling. */
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if (*src == ':')
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if (*src == ':')
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if (*++src != ':')
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if (*++src != ':')
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return (0);
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return (0);
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curtok = src;
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curtok = src;
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saw_xdigit = 0;
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saw_xdigit = 0;
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val = 0;
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val = 0;
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while ((ch = *src++) != '\0') {
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while ((ch = *src++) != '\0') {
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const char *pch;
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const char *pch;
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|
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if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
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if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
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pch = strchr((xdigits = xdigits_u), ch);
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pch = strchr((xdigits = xdigits_u), ch);
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if (pch != NULL) {
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if (pch != NULL) {
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val <<= 4;
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val <<= 4;
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val |= (pch - xdigits);
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val |= (pch - xdigits);
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if (val > 0xffff)
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if (val > 0xffff)
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return (0);
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return (0);
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saw_xdigit = 1;
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saw_xdigit = 1;
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continue;
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continue;
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}
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}
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if (ch == ':') {
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if (ch == ':') {
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curtok = src;
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curtok = src;
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if (!saw_xdigit) {
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if (!saw_xdigit) {
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if (colonp)
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if (colonp)
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return (0);
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return (0);
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colonp = tp;
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colonp = tp;
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continue;
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continue;
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} else if (*src == '\0') {
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} else if (*src == '\0') {
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return (0);
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return (0);
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}
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}
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if (tp + NS_INT16SZ > endp)
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if (tp + NS_INT16SZ > endp)
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return (0);
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return (0);
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*tp++ = (u_char) (val >> 8) & 0xff;
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*tp++ = (u_char) (val >> 8) & 0xff;
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*tp++ = (u_char) val & 0xff;
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*tp++ = (u_char) val & 0xff;
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saw_xdigit = 0;
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saw_xdigit = 0;
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val = 0;
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val = 0;
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continue;
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continue;
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}
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}
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if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
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if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
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inet_pton4(curtok, tp) > 0) {
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inet_pton4(curtok, tp) > 0) {
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tp += NS_INADDRSZ;
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tp += NS_INADDRSZ;
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saw_xdigit = 0;
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saw_xdigit = 0;
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break; /* '\0' was seen by inet_pton4(). */
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break; /* '\0' was seen by inet_pton4(). */
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}
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}
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return (0);
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return (0);
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}
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}
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if (saw_xdigit) {
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if (saw_xdigit) {
|
if (tp + NS_INT16SZ > endp)
|
if (tp + NS_INT16SZ > endp)
|
return (0);
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return (0);
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*tp++ = (u_char) (val >> 8) & 0xff;
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*tp++ = (u_char) (val >> 8) & 0xff;
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*tp++ = (u_char) val & 0xff;
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*tp++ = (u_char) val & 0xff;
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}
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}
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if (colonp != NULL) {
|
if (colonp != NULL) {
|
/*
|
/*
|
* Since some memmove()'s erroneously fail to handle
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* Since some memmove()'s erroneously fail to handle
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* overlapping regions, we'll do the shift by hand.
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* overlapping regions, we'll do the shift by hand.
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*/
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*/
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const int n = tp - colonp;
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const int n = tp - colonp;
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int i;
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int i;
|
|
|
if (tp == endp)
|
if (tp == endp)
|
return (0);
|
return (0);
|
for (i = 1; i <= n; i++) {
|
for (i = 1; i <= n; i++) {
|
endp[- i] = colonp[n - i];
|
endp[- i] = colonp[n - i];
|
colonp[n - i] = 0;
|
colonp[n - i] = 0;
|
}
|
}
|
tp = endp;
|
tp = endp;
|
}
|
}
|
if (tp != endp)
|
if (tp != endp)
|
return (0);
|
return (0);
|
memcpy(dst, tmp, NS_IN6ADDRSZ);
|
memcpy(dst, tmp, NS_IN6ADDRSZ);
|
return (1);
|
return (1);
|
}
|
}
|
#endif /*INET6*/
|
#endif /*INET6*/
|
|
|
