194 lines
6.6 KiB
C
194 lines
6.6 KiB
C
/*
|
|
* Copyright (c) 1985, 1993
|
|
* The Regents of the University of California. 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
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 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 and its contributors.
|
|
* 4. Neither the name of the University nor the names of its 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 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 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) 1996-1999 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.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static const char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93";
|
|
static const char rcsid[] = "$Id: res_mkquery.c,v 1.1.1.1 2001/08/03 11:35:36 drochner Exp $";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <netinet/in.h>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include "minires/minires.h"
|
|
#include "arpa/nameser.h"
|
|
|
|
extern const char *_res_opcodes[];
|
|
|
|
/*
|
|
* Form all types of queries.
|
|
* Returns the size of the result or -1.
|
|
*/
|
|
isc_result_t
|
|
res_nmkquery(res_state statp,
|
|
int op, /* opcode of query */
|
|
const char *dname, /* domain name */
|
|
ns_class class, ns_type type, /* class and type of query */
|
|
const u_char *data, /* resource record data */
|
|
unsigned datalen, /* length of data */
|
|
const u_char *newrr_in, /* new rr for modify or append */
|
|
double *buf, /* buffer to put query */
|
|
unsigned buflen, /* size of buffer */
|
|
unsigned *rbuflen) /* returned size of buffer */
|
|
{
|
|
register HEADER *hp;
|
|
register u_char *cp;
|
|
register int n;
|
|
u_char *dnptrs[20], **dpp, **lastdnptr;
|
|
|
|
/*
|
|
* Initialize header fields.
|
|
*/
|
|
if ((buf == NULL) || (buflen < HFIXEDSZ))
|
|
return ISC_R_INVALIDARG;
|
|
memset(buf, 0, HFIXEDSZ);
|
|
hp = (HEADER *) buf;
|
|
hp->id = htons(++statp->id);
|
|
hp->opcode = op;
|
|
hp->rd = (statp->options & RES_RECURSE) != 0;
|
|
hp->rcode = NOERROR;
|
|
cp = ((u_char *)buf) + HFIXEDSZ;
|
|
buflen -= HFIXEDSZ;
|
|
dpp = dnptrs;
|
|
*dpp++ = (u_char *)buf;
|
|
*dpp++ = NULL;
|
|
lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
|
|
/*
|
|
* perform opcode specific processing
|
|
*/
|
|
switch (op) {
|
|
case QUERY: /*FALLTHROUGH*/
|
|
case NS_NOTIFY_OP:
|
|
if ((buflen -= QFIXEDSZ) < 0)
|
|
return ISC_R_NOSPACE;
|
|
if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
|
|
return ISC_R_NOSPACE;
|
|
cp += n;
|
|
buflen -= n;
|
|
putUShort(cp, type);
|
|
cp += INT16SZ;
|
|
putUShort(cp, class);
|
|
cp += INT16SZ;
|
|
hp->qdcount = htons(1);
|
|
if (op == QUERY || data == NULL)
|
|
break;
|
|
/*
|
|
* Make an additional record for completion domain.
|
|
*/
|
|
buflen -= RRFIXEDSZ;
|
|
n = dn_comp((const char *)data, cp, buflen, dnptrs, lastdnptr);
|
|
if (n < 0)
|
|
return ISC_R_NOSPACE;
|
|
cp += n;
|
|
buflen -= n;
|
|
putUShort(cp, T_NULL);
|
|
cp += INT16SZ;
|
|
putUShort(cp, class);
|
|
cp += INT16SZ;
|
|
putULong(cp, 0);
|
|
cp += INT32SZ;
|
|
putUShort(cp, 0);
|
|
cp += INT16SZ;
|
|
hp->arcount = htons(1);
|
|
break;
|
|
|
|
case IQUERY:
|
|
/*
|
|
* Initialize answer section
|
|
*/
|
|
if (buflen < 1 + RRFIXEDSZ + datalen)
|
|
return ISC_R_NOSPACE;
|
|
*cp++ = '\0'; /* no domain name */
|
|
putUShort(cp, type);
|
|
cp += INT16SZ;
|
|
putUShort(cp, class);
|
|
cp += INT16SZ;
|
|
putULong(cp, 0);
|
|
cp += INT32SZ;
|
|
putUShort(cp, datalen);
|
|
cp += INT16SZ;
|
|
if (datalen) {
|
|
memcpy(cp, data, datalen);
|
|
cp += datalen;
|
|
}
|
|
hp->ancount = htons(1);
|
|
break;
|
|
|
|
default:
|
|
return ISC_R_NOTIMPLEMENTED;
|
|
}
|
|
*rbuflen = cp - ((u_char *)buf);
|
|
return ISC_R_SUCCESS;
|
|
}
|