res_comp.c revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
/*
* Copyright (c) 1985, 1993
* The Regents of the University of California. All rights reserved.
*
* Portions copyright (c) 1999, 2000
* Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
*
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
*
* This product includes software developed by the University of
* California, Berkeley, Intel Corporation, and its contributors.
*
* 4. Neither the name of University, Intel Corporation, or their respective
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS, INTEL CORPORATION AND
* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS,
* INTEL CORPORATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies, and that
* the name of Digital Equipment Corporation not be used in advertising or
* publicity pertaining to distribution of the document or software without
* specific, written prior permission.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/*
* Portions Copyright (c) 1996 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
static char sccsid[] = "@(#)res_comp.c 8.1 (Berkeley) 6/4/93";
static char orig_rcsid[] = "From: Id: res_comp.c,v 8.11 1997/05/21 19:31:04 halley Exp $";
static char rcsid[] = "$Id: res_comp.c,v 1.1.1.1 2003/11/19 01:51:35 kyu3 Exp $";
#endif /* LIBC_SCCS and not lint */
#include <ctype.h>
#include <resolv.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#define BIND_4_COMPAT
/*
* Expand compressed domain name 'comp_dn' to full domain name.
* 'msg' is a pointer to the begining of the message,
* 'eomorig' points to the first location after the message,
* 'exp_dn' is a pointer to a buffer of size 'length' for the result.
* Return size of compressed name or -1 if there was an error.
*/
int
{
if (n > 0 && dst[0] == '.')
dst[0] = '\0';
return (n);
}
/*
* Pack domain name 'exp_dn' in presentation form into 'comp_dn'.
* Return the size of the compressed name or -1.
* 'length' is the size of the array pointed to by 'comp_dn'.
*/
int
{
}
/*
* Skip over a compressed domain name. Return the size or -1.
*/
int
return (-1);
}
/*
* Verify that a domain name uses an acceptable character set.
*/
/*
* Note the conspicuous absence of ctype macros in these definitions. On
* non-ASCII hosts, we can't depend on string literals or ctype macros to
* tell us anything about network-format data. The rest of the BIND system
* is not careful about this, but for some reason, we're doing it right here.
*/
#define PERIOD 0x2e
#define hyphenchar(c) ((c) == 0x2d)
#define bslashchar(c) ((c) == 0x5c)
#define periodchar(c) ((c) == PERIOD)
#define asterchar(c) ((c) == 0x2a)
|| ((c) >= 0x61 && (c) <= 0x7a))
int
const char *dn
)
{
while (ch != '\0') {
if (periodchar(ch)) {
(void)NULL;
} else if (periodchar(pch)) {
if (!borderchar(ch))
return (0);
if (!borderchar(ch))
return (0);
} else {
if (!middlechar(ch))
return (0);
}
}
return (1);
}
/*
* hostname-like (A, MX, WKS) owners can have "*" as their first label
* but must otherwise be as a host name.
*/
int
const char *dn
)
{
return (1);
}
}
/*
* SOA RNAMEs and RP RNAMEs can have any printable character in their first
* label, but the rest of the name has to look like a host name.
*/
int
const char *dn
)
{
/* "." is a valid missing representation */
if (*dn == '\0')
return (1);
/* otherwise <label>.<hostname> */
if (!domainchar(ch))
return (0);
break;
if (escaped)
escaped = 0;
else if (bslashchar(ch))
escaped = 1;
}
if (periodchar(ch))
return (0);
}
/*
* This function is quite liberal, since RFC 1034's character sets are only
* recommendations.
*/
int
const char *dn
)
{
int ch;
if (!domainchar(ch))
return (0);
return (1);
}
#ifdef BIND_4_COMPAT
/*
* This module must export the following externally-visible symbols:
* ___putlong
* ___putshort
* __getlong
* __getshort
* Note that one _ comes from C and the others come from us.
*/
#endif /*BIND_4_COMPAT*/