Expand PMF_FN_* macros.
[netbsd-mini2440.git] / dist / dhcp / minires / res_mkquery.c
blob8c9490d835dc50046de95fb46a00ca26bf49b916
1 /*
2 * Copyright (c) 1985, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
31 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
33 * Permission to use, copy, modify, and distribute this software for any
34 * purpose with or without fee is hereby granted, provided that the above
35 * copyright notice and this permission notice appear in all copies, and that
36 * the name of Digital Equipment Corporation not be used in advertising or
37 * publicity pertaining to distribution of the document or software without
38 * specific, written prior permission.
40 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
41 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
42 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
43 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
44 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
45 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
46 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
47 * SOFTWARE.
51 * Portions Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
52 * Portions Copyright (c) 1996-2003 by Internet Software Consortium
54 * Permission to use, copy, modify, and distribute this software for any
55 * purpose with or without fee is hereby granted, provided that the above
56 * copyright notice and this permission notice appear in all copies.
58 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
59 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
60 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
61 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
62 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
63 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
64 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
66 * Internet Systems Consortium, Inc.
67 * 950 Charter Street
68 * Redwood City, CA 94063
69 * <info@isc.org>
70 * http://www.isc.org/
73 #if defined(LIBC_SCCS) && !defined(lint)
74 static const char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93";
75 static const char rcsid[] = "$Id: res_mkquery.c,v 1.3 2005/08/11 17:13:26 drochner Exp $";
76 #endif /* LIBC_SCCS and not lint */
78 #include <sys/types.h>
79 #include <sys/param.h>
80 #include <netinet/in.h>
81 #include <netdb.h>
82 #include <stdio.h>
83 #include <string.h>
84 #include <sys/socket.h>
86 #include "minires/minires.h"
87 #include "arpa/nameser.h"
89 extern const char *_res_opcodes[];
92 * Form all types of queries.
93 * Returns the size of the result or -1.
95 isc_result_t
96 res_nmkquery(res_state statp,
97 int op, /* opcode of query */
98 const char *dname, /* domain name */
99 ns_class class, ns_type type, /* class and type of query */
100 const u_char *data, /* resource record data */
101 unsigned datalen, /* length of data */
102 const u_char *newrr_in, /* new rr for modify or append */
103 double *buf, /* buffer to put query */
104 unsigned buflen, /* size of buffer */
105 unsigned *rbuflen) /* returned size of buffer */
107 register HEADER *hp;
108 register u_char *cp;
109 register int n;
110 u_char *dnptrs[20], **dpp, **lastdnptr;
113 * Initialize header fields.
115 if ((buf == NULL) || (buflen < HFIXEDSZ))
116 return ISC_R_INVALIDARG;
117 memset(buf, 0, HFIXEDSZ);
118 hp = (HEADER *) buf;
119 hp->id = htons(++statp->id);
120 hp->opcode = op;
121 hp->rd = (statp->options & RES_RECURSE) != 0;
122 hp->rcode = NOERROR;
123 cp = ((u_char *)buf) + HFIXEDSZ;
124 buflen -= HFIXEDSZ;
125 dpp = dnptrs;
126 *dpp++ = (u_char *)buf;
127 *dpp++ = NULL;
128 lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
130 * perform opcode specific processing
132 switch (op) {
133 case QUERY: /*FALLTHROUGH*/
134 case NS_NOTIFY_OP:
135 if ((buflen -= QFIXEDSZ) < 0)
136 return ISC_R_NOSPACE;
137 if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
138 return ISC_R_NOSPACE;
139 cp += n;
140 buflen -= n;
141 putUShort(cp, type);
142 cp += INT16SZ;
143 putUShort(cp, class);
144 cp += INT16SZ;
145 hp->qdcount = htons(1);
146 if (op == QUERY || data == NULL)
147 break;
149 * Make an additional record for completion domain.
151 buflen -= RRFIXEDSZ;
152 n = dn_comp((const char *)data, cp, buflen, dnptrs, lastdnptr);
153 if (n < 0)
154 return ISC_R_NOSPACE;
155 cp += n;
156 buflen -= n;
157 putUShort(cp, T_NULL);
158 cp += INT16SZ;
159 putUShort(cp, class);
160 cp += INT16SZ;
161 putULong(cp, 0);
162 cp += INT32SZ;
163 putUShort(cp, 0);
164 cp += INT16SZ;
165 hp->arcount = htons(1);
166 break;
168 case IQUERY:
170 * Initialize answer section
172 if (buflen < 1 + RRFIXEDSZ + datalen)
173 return ISC_R_NOSPACE;
174 *cp++ = '\0'; /* no domain name */
175 putUShort(cp, type);
176 cp += INT16SZ;
177 putUShort(cp, class);
178 cp += INT16SZ;
179 putULong(cp, 0);
180 cp += INT32SZ;
181 putUShort(cp, datalen);
182 cp += INT16SZ;
183 if (datalen) {
184 memcpy(cp, data, datalen);
185 cp += datalen;
187 hp->ancount = htons(1);
188 break;
190 default:
191 return ISC_R_NOTIMPLEMENTED;
193 *rbuflen = cp - ((u_char *)buf);
194 return ISC_R_SUCCESS;