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- /*
- * Copyright (c) 1985 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.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@(#)res_mkquery.c 6.16 (Berkeley) 3/6/91";
- #endif /* LIBC_SCCS and not lint */
-
- #include <conf.h>
-
- #include <sys/param.h>
- #include <api/arpa_nameser.h>
- #include <api/resolv.h>
- #include <kern/amiga_includes.h>
- #include <api/amiga_api.h>
- #include <kern/amiga_subr.h>
-
- /*
- * Form all types of queries.
- * Returns the size of the result or -1.
- */
-
- int res_mkquery(struct SocketBase *libPtr,
- int op, /* opcode of query */
- const char *dname, /* domain name */
- int class,
- int type, /* class and type of query */
- const char *data, /* resource record data */
- int datalen, /* length of data */
- const struct rrec *newrr, /* new rr for modify or append */
- char *buf, /* buffer to put query */
- int buflen) /* size of buffer */
- {
- register HEADER *hp;
- register char *cp;
- register int n;
- char *dnptrs[10], **dpp, **lastdnptr;
-
- #ifdef RES_DEBUG
- printf("res_mkquery(%d, %s, %d, %d)\n", op, dname, class, type);
- #endif /* RES_DEBUG */
- /*
- * Initialize header fields.
- */
- if ((buf == NULL) || (buflen < sizeof(HEADER)))
- return(-1);
- bzero(buf, sizeof(HEADER));
- hp = (HEADER *) buf;
- hp->id = htons(++_res.id);
- hp->opcode = op;
- hp->pr = (_res.options & RES_PRIMARY) != 0;
- hp->rd = (_res.options & RES_RECURSE) != 0;
- hp->rcode = NOERROR;
- cp = buf + sizeof(HEADER);
- buflen -= sizeof(HEADER);
- dpp = dnptrs;
- *dpp++ = buf;
- *dpp++ = NULL;
- lastdnptr = dnptrs + sizeof(dnptrs)/sizeof(dnptrs[0]);
- /*
- * perform opcode specific processing
- */
- switch (op) {
- case QUERY:
- if ((buflen -= QFIXEDSZ) < 0)
- return(-1);
- if ((n = dn_comp((u_char *)dname, (u_char *)cp, buflen,
- (u_char **)dnptrs, (u_char **)lastdnptr)) < 0)
- return (-1);
- cp += n;
- buflen -= n;
- __putshort(type, (u_char *)cp);
- cp += sizeof(u_short);
- __putshort(class, (u_char *)cp);
- cp += sizeof(u_short);
- hp->qdcount = htons(1);
- if (op == QUERY || data == NULL)
- break;
- /*
- * Make an additional record for completion domain.
- */
- buflen -= RRFIXEDSZ;
- if ((n = dn_comp((u_char *)data, (u_char *)cp, buflen,
- (u_char **)dnptrs, (u_char **)lastdnptr)) < 0)
- return (-1);
- cp += n;
- buflen -= n;
- __putshort(T_NULL, (u_char *)cp);
- cp += sizeof(u_short);
- __putshort(class, (u_char *)cp);
- cp += sizeof(u_short);
- __putlong(0, (u_char *)cp);
- cp += sizeof(u_long);
- __putshort(0, (u_char *)cp);
- cp += sizeof(u_short);
- hp->arcount = htons(1);
- break;
- default:
- return (-1); /* is call initially comes from gethostname()
- no other opcodes are used */
- }
- return (cp - buf);
- }
-