/* * 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. 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 1.2 2003/08/07 09:21:09 agc Exp $"; #endif /* LIBC_SCCS and not lint */ #include #include #include #include #include #include #include #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; }