2 * Copyright (c) 1985, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies, and that
40 * the name of Digital Equipment Corporation not be used in advertising or
41 * publicity pertaining to distribution of the document or software without
42 * specific, written prior permission.
44 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
45 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
46 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
47 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
48 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
49 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
50 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
55 * Portions Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
56 * Portions Copyright (c) 1996-2003 by Internet Software Consortium
58 * Permission to use, copy, modify, and distribute this software for any
59 * purpose with or without fee is hereby granted, provided that the above
60 * copyright notice and this permission notice appear in all copies.
62 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
63 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
64 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
65 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
66 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
67 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
68 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
70 * Internet Systems Consortium, Inc.
72 * Redwood City, CA 94063
77 #if defined(LIBC_SCCS) && !defined(lint) && !defined(__AROS__)
78 static const char sccsid
[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93";
79 static const char rcsid
[] = "$Id$";
80 #endif /* LIBC_SCCS and not lint */
82 #include <sys/types.h>
83 #include <sys/param.h>
84 #include <netinet/in.h>
88 #include <sys/socket.h>
90 #include "minires/minires.h"
91 #include "arpa/nameser.h"
93 extern const char *_res_opcodes
[];
96 * Form all types of queries.
97 * Returns the size of the result or -1.
100 res_nmkquery(res_state statp
,
101 int op
, /* opcode of query */
102 const char *dname
, /* domain name */
103 ns_class
class, ns_type type
, /* class and type of query */
104 const u_char
*data
, /* resource record data */
105 unsigned datalen
, /* length of data */
106 const u_char
*newrr_in
, /* new rr for modify or append */
107 double *buf
, /* buffer to put query */
108 unsigned buflen
, /* size of buffer */
109 unsigned *rbuflen
) /* returned size of buffer */
114 u_char
*dnptrs
[20], **dpp
, **lastdnptr
;
117 * Initialize header fields.
119 if ((buf
== NULL
) || (buflen
< HFIXEDSZ
))
120 return ISC_R_INVALIDARG
;
121 memset(buf
, 0, HFIXEDSZ
);
123 hp
->id
= htons(++statp
->id
);
125 hp
->rd
= (statp
->options
& RES_RECURSE
) != 0;
127 cp
= ((u_char
*)buf
) + HFIXEDSZ
;
130 *dpp
++ = (u_char
*)buf
;
132 lastdnptr
= dnptrs
+ sizeof dnptrs
/ sizeof dnptrs
[0];
134 * perform opcode specific processing
137 case QUERY
: /*FALLTHROUGH*/
139 if ((buflen
-= QFIXEDSZ
) < 0)
140 return ISC_R_NOSPACE
;
141 if ((n
= dn_comp(dname
, cp
, buflen
, dnptrs
, lastdnptr
)) < 0)
142 return ISC_R_NOSPACE
;
147 putUShort(cp
, class);
149 hp
->qdcount
= htons(1);
150 if (op
== QUERY
|| data
== NULL
)
153 * Make an additional record for completion domain.
156 n
= dn_comp((const char *)data
, cp
, buflen
, dnptrs
, lastdnptr
);
158 return ISC_R_NOSPACE
;
161 putUShort(cp
, T_NULL
);
163 putUShort(cp
, class);
169 hp
->arcount
= htons(1);
174 * Initialize answer section
176 if (buflen
< 1 + RRFIXEDSZ
+ datalen
)
177 return ISC_R_NOSPACE
;
178 *cp
++ = '\0'; /* no domain name */
181 putUShort(cp
, class);
185 putUShort(cp
, datalen
);
188 memcpy(cp
, data
, datalen
);
191 hp
->ancount
= htons(1);
195 return ISC_R_NOTIMPLEMENTED
;
197 *rbuflen
= cp
- ((u_char
*)buf
);
198 return ISC_R_SUCCESS
;