|
1 /* NAMESER.H |
|
2 * |
|
3 * Portions Copyright (c) 1993-1999 Nokia Corporation and/or its subsidiary(-ies). |
|
4 * All rights reserved. |
|
5 */ |
|
6 |
|
7 /** @file |
|
8 @publishedAll |
|
9 @released |
|
10 */ |
|
11 |
|
12 /* |
|
13 * Copyright (c) 1983, 1989, 1993 |
|
14 * The Regents of the University of California. All rights reserved. |
|
15 * |
|
16 * Redistribution and use in source and binary forms, with or without |
|
17 * modification, are permitted provided that the following conditions |
|
18 * are met: |
|
19 * 1. Redistributions of source code must retain the above copyright |
|
20 * notice, this list of conditions and the following disclaimer. |
|
21 * 2. Redistributions in binary form must reproduce the above copyright |
|
22 * notice, this list of conditions and the following disclaimer in the |
|
23 * documentation and/or other materials provided with the distribution. |
|
24 * 3. All advertising materials mentioning features or use of this software |
|
25 * must display the following acknowledgement: |
|
26 * This product includes software developed by the University of |
|
27 * California, Berkeley and its contributors. |
|
28 * 4. Neither the name of the University nor the names of its contributors |
|
29 * may be used to endorse or promote products derived from this software |
|
30 * without specific prior written permission. |
|
31 * |
|
32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
|
33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|
34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
|
35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
|
36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
|
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
|
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|
40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
|
41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
|
42 * SUCH DAMAGE. |
|
43 * |
|
44 * - |
|
45 * Portions Copyright (c) 1993 by Digital Equipment Corporation. |
|
46 * |
|
47 * Permission to use, copy, modify, and distribute this software for any |
|
48 * purpose with or without fee is hereby granted, provided that the above |
|
49 * copyright notice and this permission notice appear in all copies, and that |
|
50 * the name of Digital Equipment Corporation not be used in advertising or |
|
51 * publicity pertaining to distribution of the document or software without |
|
52 * specific, written prior permission. |
|
53 * |
|
54 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL |
|
55 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES |
|
56 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT |
|
57 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
|
58 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
|
59 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
|
60 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
|
61 * SOFTWARE. |
|
62 * - |
|
63 * Portions Copyright (c) 1995 by International Business Machines, Inc. |
|
64 * |
|
65 * International Business Machines, Inc. (hereinafter called IBM) grants |
|
66 * permission under its copyrights to use, copy, modify, and distribute this |
|
67 * Software with or without fee, provided that the above copyright notice and |
|
68 * all paragraphs of this notice appear in all copies, and that the name of IBM |
|
69 * not be used in connection with the marketing of any product incorporating |
|
70 * the Software or modifications thereof, without specific, written prior |
|
71 * permission. |
|
72 * |
|
73 * To the extent it has a right to do so, IBM grants an immunity from suit |
|
74 * under its patents, if any, for the use, sale or manufacture of products to |
|
75 * the extent that such products are used for performing Domain Name System |
|
76 * dynamic updates in TCP/IP networks by means of the Software. No immunity is |
|
77 * granted for any product per se or for any other function of any product. |
|
78 * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, |
|
79 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
|
80 * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, |
|
81 * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING |
|
82 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN |
|
83 * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. |
|
84 * |
|
85 * @(#)nameser.h 8.2 (Berkeley) 2/16/94 |
|
86 * From Id: nameser.h,v 8.11 1996/10/08 04:51:02 vixie Exp |
|
87 * $Id: nameser.h,v 1.11 1997/02/23 09:17:20 peter Exp $ |
|
88 */ |
|
89 |
|
90 #ifndef _ARPA_NAMESER_H_ |
|
91 #define _ARPA_NAMESER_H_ |
|
92 |
|
93 #ifdef __cplusplus |
|
94 extern "C" { |
|
95 #endif |
|
96 |
|
97 #include <sys/param.h> |
|
98 #include <sys/types.h> |
|
99 |
|
100 /** |
|
101 revision information. this is the release date in YYYYMMDD format. |
|
102 it can change every day so the right thing to do with it is use it |
|
103 in preprocessor commands such as "#if (__BIND > 19931104)". do not |
|
104 compare for equality; rather, use it to determine whether your resolver |
|
105 is new enough to contain a certain feature. |
|
106 */ |
|
107 |
|
108 #define __BIND 19960801 /* interface version stamp */ |
|
109 |
|
110 /** |
|
111 Define constants based on rfc883 |
|
112 */ |
|
113 |
|
114 /** maximum packet size */ |
|
115 #define PACKETSZ 512 |
|
116 |
|
117 /** maximum presentation domain name */ |
|
118 #define MAXDNAME 1025 |
|
119 |
|
120 /** maximum compressed domain name */ |
|
121 #define MAXCDNAME 255 |
|
122 |
|
123 /** maximum length of domain label */ |
|
124 #define MAXLABEL 63 |
|
125 |
|
126 /** #/bytes of fixed data in header */ |
|
127 #define HFIXEDSZ 12 |
|
128 |
|
129 /** #/bytes of fixed data in query */ |
|
130 #define QFIXEDSZ 4 |
|
131 |
|
132 /** #/bytes of fixed data in r record */ |
|
133 #define RRFIXEDSZ 10 |
|
134 |
|
135 /** for systems without 32-bit ints */ |
|
136 #define INT32SZ 4 |
|
137 |
|
138 /** for systems without 16-bit ints */ |
|
139 #define INT16SZ 2 |
|
140 |
|
141 /** IPv4 T_A */ |
|
142 #define INADDRSZ 4 |
|
143 |
|
144 /** IPv6 T_AAAA */ |
|
145 #define IN6ADDRSZ 16 |
|
146 |
|
147 /** |
|
148 Internet nameserver port number |
|
149 */ |
|
150 #define NAMESERVER_PORT 53 |
|
151 |
|
152 |
|
153 /** |
|
154 Currently defined opcodes |
|
155 */ |
|
156 |
|
157 /** standard query */ |
|
158 #define QUERY 0x0 |
|
159 |
|
160 /** inverse query */ |
|
161 #define IQUERY 0x1 |
|
162 |
|
163 /** nameserver status query */ |
|
164 #define STATUS 0x2 |
|
165 |
|
166 /* 0x3 reserved */ |
|
167 /*#define xxx 0x3 */ |
|
168 #define NS_NOTIFY_OP 0x4 /* notify secondary of SOA change */ |
|
169 |
|
170 |
|
171 /** |
|
172 Currently defined response codes |
|
173 */ |
|
174 |
|
175 /** no error */ |
|
176 #define NOERROR 0 |
|
177 |
|
178 /** format error */ |
|
179 #define FORMERR 1 |
|
180 |
|
181 /** server failure */ |
|
182 #define SERVFAIL 2 |
|
183 |
|
184 /** non existent domain */ |
|
185 #define NXDOMAIN 3 |
|
186 |
|
187 /** not implemented */ |
|
188 #define NOTIMP 4 |
|
189 |
|
190 /** query refused */ |
|
191 #define REFUSED 5 |
|
192 |
|
193 |
|
194 |
|
195 /** |
|
196 Type values for resources and queries |
|
197 */ |
|
198 |
|
199 /** host address */ |
|
200 #define T_A 1 |
|
201 |
|
202 /** authoritative server */ |
|
203 #define T_NS 2 |
|
204 |
|
205 /** mail destination */ |
|
206 #define T_MD 3 |
|
207 |
|
208 /** mail forwarder */ |
|
209 #define T_MF 4 |
|
210 |
|
211 /** canonical name */ |
|
212 #define T_CNAME 5 |
|
213 |
|
214 /** start of authority zone */ |
|
215 #define T_SOA 6 |
|
216 |
|
217 /** mailbox domain name */ |
|
218 #define T_MB 7 |
|
219 |
|
220 /** mail group member */ |
|
221 #define T_MG 8 |
|
222 |
|
223 /** mail rename name */ |
|
224 #define T_MR 9 |
|
225 |
|
226 /** null resource record */ |
|
227 #define T_NULL 10 |
|
228 |
|
229 /** well known service */ |
|
230 #define T_WKS 11 |
|
231 |
|
232 /** domain name pointer */ |
|
233 #define T_PTR 12 |
|
234 |
|
235 /** host information */ |
|
236 #define T_HINFO 13 |
|
237 |
|
238 /** mailbox information */ |
|
239 #define T_MINFO 14 |
|
240 |
|
241 /** mail routing information */ |
|
242 #define T_MX 15 |
|
243 |
|
244 /** text strings */ |
|
245 #define T_TXT 16 |
|
246 |
|
247 /** responsible person */ |
|
248 #define T_RP 17 |
|
249 |
|
250 /** AFS cell database */ |
|
251 #define T_AFSDB 18 |
|
252 |
|
253 /** X_25 calling address */ |
|
254 #define T_X25 19 |
|
255 |
|
256 /** ISDN calling address */ |
|
257 #define T_ISDN 20 |
|
258 |
|
259 /** router */ |
|
260 #define T_RT 21 |
|
261 |
|
262 /** NSAP address */ |
|
263 #define T_NSAP 22 |
|
264 |
|
265 /** reverse NSAP lookup (deprecated) */ |
|
266 #define T_NSAP_PTR 23 |
|
267 |
|
268 /** security signature */ |
|
269 #define T_SIG 24 |
|
270 |
|
271 /** security key */ |
|
272 #define T_KEY 25 |
|
273 |
|
274 /** X.400 mail mapping */ |
|
275 #define T_PX 26 |
|
276 |
|
277 /** geographical position (withdrawn) */ |
|
278 #define T_GPOS 27 |
|
279 |
|
280 /** IP6 Address */ |
|
281 #define T_AAAA 28 |
|
282 |
|
283 /** Location Information */ |
|
284 #define T_LOC 29 |
|
285 |
|
286 /** Next Valid Name in Zone */ |
|
287 #define T_NXT 30 |
|
288 |
|
289 /** Endpoint identifier */ |
|
290 #define T_EID 31 |
|
291 |
|
292 /** Nimrod locator */ |
|
293 #define T_NIMLOC 32 |
|
294 |
|
295 /** Server selection */ |
|
296 #define T_SRV 33 |
|
297 |
|
298 /** ATM Address */ |
|
299 #define T_ATMA 34 |
|
300 |
|
301 /** Naming Authority PoinTeR */ |
|
302 #define T_NAPTR 35 |
|
303 |
|
304 /** user (finger) information |
|
305 non standard |
|
306 */ |
|
307 #define T_UINFO 100 |
|
308 |
|
309 /** user ID */ |
|
310 #define T_UID 101 |
|
311 |
|
312 /** group ID */ |
|
313 #define T_GID 102 |
|
314 |
|
315 /** Unspecified format (binary data) */ |
|
316 #define T_UNSPEC 103 |
|
317 |
|
318 /** Query type values which do not appear in resource records |
|
319 incremental zone transfer */ |
|
320 #define T_IXFR 251 |
|
321 |
|
322 /** transfer zone of authority */ |
|
323 #define T_AXFR 252 |
|
324 |
|
325 /** transfer mailbox records */ |
|
326 #define T_MAILB 253 |
|
327 |
|
328 /** transfer mail agent records */ |
|
329 #define T_MAILA 254 |
|
330 |
|
331 /** wildcard match */ |
|
332 #define T_ANY 255 |
|
333 |
|
334 /** |
|
335 Values for class field |
|
336 */ |
|
337 #define C_IN 1 /* the arpa internet */ |
|
338 #define C_CHAOS 3 /* for chaos net (MIT) */ |
|
339 #define C_HS 4 /* for Hesiod name server (MIT) (XXX) */ |
|
340 /* Query class values which do not appear in resource records */ |
|
341 #define C_ANY 255 /* wildcard match */ |
|
342 |
|
343 /** |
|
344 Flags field of the KEY RR rdata |
|
345 */ |
|
346 #define KEYFLAG_TYPEMASK 0xC000 /* Mask for "type" bits */ |
|
347 #define KEYFLAG_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ |
|
348 #define KEYFLAG_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ |
|
349 #define KEYFLAG_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ |
|
350 #define KEYFLAG_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ |
|
351 /** The type bits can also be interpreted independently, as single bits: */ |
|
352 #define KEYFLAG_NO_AUTH 0x8000 /* Key not usable for authentication */ |
|
353 #define KEYFLAG_NO_CONF 0x4000 /* Key not usable for confidentiality */ |
|
354 |
|
355 #define KEYFLAG_EXPERIMENTAL 0x2000 /* Security is *mandatory* if bit=0 */ |
|
356 #define KEYFLAG_RESERVED3 0x1000 /* reserved - must be zero */ |
|
357 #define KEYFLAG_RESERVED4 0x0800 /* reserved - must be zero */ |
|
358 #define KEYFLAG_USERACCOUNT 0x0400 /* key is assoc. with a user acct */ |
|
359 #define KEYFLAG_ENTITY 0x0200 /* key is assoc. with entity eg host */ |
|
360 #define KEYFLAG_ZONEKEY 0x0100 /* key is zone key for the zone named */ |
|
361 #define KEYFLAG_IPSEC 0x0080 /* key is for IPSEC use (host or user)*/ |
|
362 #define KEYFLAG_EMAIL 0x0040 /* key is for email (MIME security) */ |
|
363 #define KEYFLAG_RESERVED10 0x0020 /* reserved - must be zero */ |
|
364 #define KEYFLAG_RESERVED11 0x0010 /* reserved - must be zero */ |
|
365 #define KEYFLAG_SIGNATORYMASK 0x000F /* key can sign DNS RR's of same name */ |
|
366 |
|
367 #define KEYFLAG_RESERVED_BITMASK ( KEYFLAG_RESERVED3 | \ |
|
368 KEYFLAG_RESERVED4 | \ |
|
369 KEYFLAG_RESERVED10| KEYFLAG_RESERVED11) |
|
370 |
|
371 /** |
|
372 The Algorithm field of the KEY and SIG RR's is an integer, {1..254} |
|
373 */ |
|
374 #define ALGORITHM_MD5RSA 1 /* MD5 with RSA */ |
|
375 #define ALGORITHM_EXPIRE_ONLY 253 /* No alg, no security */ |
|
376 #define ALGORITHM_PRIVATE_OID 254 /* Key begins with OID indicating alg */ |
|
377 |
|
378 /** |
|
379 Signatures |
|
380 */ |
|
381 /** Size of a mod or exp in bits */ |
|
382 #define MIN_MD5RSA_KEY_PART_BITS 512 |
|
383 #define MAX_MD5RSA_KEY_PART_BITS 2552 |
|
384 /** Total of binary mod and exp, bytes */ |
|
385 #define MAX_MD5RSA_KEY_BYTES ((MAX_MD5RSA_KEY_PART_BITS+7/8)*2+3) |
|
386 /** Max length of text sig block */ |
|
387 #define MAX_KEY_BASE64 (((MAX_MD5RSA_KEY_BYTES+2)/3)*4) |
|
388 |
|
389 /** |
|
390 Status return codes for T_UNSPEC conversion routines |
|
391 */ |
|
392 #define CONV_SUCCESS 0 |
|
393 #define CONV_OVERFLOW (-1) |
|
394 #define CONV_BADFMT (-2) |
|
395 #define CONV_BADCKSUM (-3) |
|
396 #define CONV_BADBUFLEN (-4) |
|
397 |
|
398 /** |
|
399 Structure for query header. The order of the fields is machine- and |
|
400 compiler-dependent, depending on the byte/bit order and the layout |
|
401 of bit fields. We use bit fields only in int variables, as this |
|
402 is all ANSI requires. This requires a somewhat confusing rearrangement. |
|
403 EPOC32 is little-endian |
|
404 */ |
|
405 typedef struct { |
|
406 unsigned id :16; /* query identification number */ |
|
407 /* fields in third byte */ |
|
408 unsigned rd :1; /* recursion desired */ |
|
409 unsigned tc :1; /* truncated message */ |
|
410 unsigned aa :1; /* authoritative answer */ |
|
411 unsigned opcode :4; /* purpose of message */ |
|
412 unsigned qr :1; /* response flag */ |
|
413 /* fields in fourth byte */ |
|
414 unsigned rcode :4; /* response code */ |
|
415 unsigned cd: 1; /* checking disabled by resolver */ |
|
416 unsigned ad: 1; /* authentic data from named */ |
|
417 unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ |
|
418 unsigned ra :1; /* recursion available */ |
|
419 /* remaining bytes */ |
|
420 unsigned qdcount :16; /* number of question entries */ |
|
421 unsigned ancount :16; /* number of answer entries */ |
|
422 unsigned nscount :16; /* number of authority entries */ |
|
423 unsigned arcount :16; /* number of resource entries */ |
|
424 } HEADER; |
|
425 |
|
426 /** |
|
427 Defines for handling compressed domain names |
|
428 */ |
|
429 #define INDIR_MASK 0xc0 |
|
430 |
|
431 extern u_int16_t _getshort (const u_char *); |
|
432 extern u_int32_t _getlong (const u_char *); |
|
433 |
|
434 /** |
|
435 Inline versions of get/put short/long. Pointer is advanced. |
|
436 |
|
437 These macros demonstrate the property of C whereby it can be |
|
438 portable or it can be elegant but rarely both. |
|
439 */ |
|
440 #define GETSHORT(s, cp) { \ |
|
441 register u_char *t_cp = (u_char *)(cp); \ |
|
442 (s) = ((u_int16_t)t_cp[0] << 8) \ |
|
443 | ((u_int16_t)t_cp[1]) \ |
|
444 ; \ |
|
445 (cp) += INT16SZ; \ |
|
446 } |
|
447 |
|
448 #define GETLONG(l, cp) { \ |
|
449 register u_char *t_cp = (u_char *)(cp); \ |
|
450 (l) = ((u_int32_t)t_cp[0] << 24) \ |
|
451 | ((u_int32_t)t_cp[1] << 16) \ |
|
452 | ((u_int32_t)t_cp[2] << 8) \ |
|
453 | ((u_int32_t)t_cp[3]) \ |
|
454 ; \ |
|
455 (cp) += INT32SZ; \ |
|
456 } |
|
457 |
|
458 #define PUTSHORT(s, cp) { \ |
|
459 register u_int16_t t_s = (u_int16_t)(s); \ |
|
460 register u_char *t_cp = (u_char *)(cp); \ |
|
461 *t_cp++ = t_s >> 8; \ |
|
462 *t_cp = t_s; \ |
|
463 (cp) += INT16SZ; \ |
|
464 } |
|
465 |
|
466 #define PUTLONG(l, cp) { \ |
|
467 register u_int32_t t_l = (u_int32_t)(l); \ |
|
468 register u_char *t_cp = (u_char *)(cp); \ |
|
469 *t_cp++ = t_l >> 24; \ |
|
470 *t_cp++ = t_l >> 16; \ |
|
471 *t_cp++ = t_l >> 8; \ |
|
472 *t_cp = t_l; \ |
|
473 (cp) += INT32SZ; \ |
|
474 } |
|
475 |
|
476 #ifdef __cplusplus |
|
477 } |
|
478 #endif |
|
479 #endif /* !_ARPA_NAMESER_H_ */ |