1/*
2 * Copyright (c) 1983, 1989, 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. 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.
20 *
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
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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
31 * SUCH DAMAGE.
32 */
33
34/*
35 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
36 * Copyright (c) 1996-1999 by Internet Software Consortium.
37 *
38 * Permission to use, copy, modify, and distribute this software for any
39 * purpose with or without fee is hereby granted, provided that the above
40 * copyright notice and this permission notice appear in all copies.
41 *
42 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
43 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
44 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
45 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
46 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
47 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
48 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
49 */
50
51/*
52 * $Id: nameser.h,v 1.7.18.2 2008/04/03 23:15:15 marka Exp $
53 * $FreeBSD: head/include/arpa/nameser.h 186090 2008-12-14 19:39:53Z ume $
54 */
55
56#ifndef _ARPA_NAMESER_H_
57#define _ARPA_NAMESER_H_
58
59/*! \file */
60
61#define BIND_4_COMPAT
62
63#include <sys/param.h>
64#include <sys/types.h>
65#include <sys/cdefs.h>
66
67/*%
68 * Revision information. This is the release date in YYYYMMDD format.
69 * It can change every day so the right thing to do with it is use it
70 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
71 * compare for equality; rather, use it to determine whether your libbind.a
72 * contains a new enough lib/nameser/ to support the feature you need.
73 */
74
75#define __NAMESER 19991006 /*%< New interface version stamp. */
76/*
77 * Define constants based on RFC0883, RFC1034, RFC 1035
78 */
79#define NS_PACKETSZ 512 /*%< default UDP packet size */
80#define NS_MAXDNAME 1025 /*%< maximum domain name */
81#define NS_MAXMSG 65535 /*%< maximum message size */
82#define NS_MAXCDNAME 255 /*%< maximum compressed domain name */
83#define NS_MAXLABEL 63 /*%< maximum length of domain label */
84#define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */
85#define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */
86#define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */
87#define NS_INT32SZ 4 /*%< #/bytes of data in a u_int32_t */
88#define NS_INT16SZ 2 /*%< #/bytes of data in a u_int16_t */
89#define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */
90#define NS_INADDRSZ 4 /*%< IPv4 T_A */
91#define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */
92#define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */
93#define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */
94/*
95 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
96 * in synch with it.
97 */
98typedef enum __ns_sect {
99 ns_s_qd = 0, /*%< Query: Question. */
100 ns_s_zn = 0, /*%< Update: Zone. */
101 ns_s_an = 1, /*%< Query: Answer. */
102 ns_s_pr = 1, /*%< Update: Prerequisites. */
103 ns_s_ns = 2, /*%< Query: Name servers. */
104 ns_s_ud = 2, /*%< Update: Update. */
105 ns_s_ar = 3, /*%< Query|Update: Additional records. */
106 ns_s_max = 4
107} ns_sect;
108
109/*%
110 * This is a message handle. It is caller allocated and has no dynamic data.
111 * This structure is intended to be opaque to all but ns_parse.c, thus the
112 * leading _'s on the member names. Use the accessor functions, not the _'s.
113 */
114typedef struct __ns_msg {
115 const u_char *_msg, *_eom;
116 u_int16_t _id, _flags, _counts[ns_s_max];
117 const u_char *_sections[ns_s_max];
118 ns_sect _sect;
119 int _rrnum;
120 const u_char *_msg_ptr;
121} ns_msg;
122
123/* Private data structure - do not use from outside library. */
124struct _ns_flagdata { int mask, shift; };
125extern struct _ns_flagdata _ns_flagdata[];
126
127/* Accessor macros - this is part of the public interface. */
128
129#define ns_msg_id(handle) ((handle)._id + 0)
130#define ns_msg_base(handle) ((handle)._msg + 0)
131#define ns_msg_end(handle) ((handle)._eom + 0)
132#define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
133#define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
134
135/*%
136 * This is a parsed record. It is caller allocated and has no dynamic data.
137 */
138typedef struct __ns_rr {
139 char name[NS_MAXDNAME];
140 u_int16_t type;
141 u_int16_t rr_class;
142 u_int32_t ttl;
143 u_int16_t rdlength;
144 const u_char * rdata;
145} ns_rr;
146
147/* Accessor macros - this is part of the public interface. */
148#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
149#define ns_rr_type(rr) ((ns_type)((rr).type + 0))
150#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
151#define ns_rr_ttl(rr) ((rr).ttl + 0)
152#define ns_rr_rdlen(rr) ((rr).rdlength + 0)
153#define ns_rr_rdata(rr) ((rr).rdata + 0)
154
155/*%
156 * These don't have to be in the same order as in the packet flags word,
157 * and they can even overlap in some cases, but they will need to be kept
158 * in synch with ns_parse.c:ns_flagdata[].
159 */
160typedef enum __ns_flag {
161 ns_f_qr, /*%< Question/Response. */
162 ns_f_opcode, /*%< Operation code. */
163 ns_f_aa, /*%< Authoritative Answer. */
164 ns_f_tc, /*%< Truncation occurred. */
165 ns_f_rd, /*%< Recursion Desired. */
166 ns_f_ra, /*%< Recursion Available. */
167 ns_f_z, /*%< MBZ. */
168 ns_f_ad, /*%< Authentic Data (DNSSEC). */
169 ns_f_cd, /*%< Checking Disabled (DNSSEC). */
170 ns_f_rcode, /*%< Response code. */
171 ns_f_max
172} ns_flag;
173
174/*%
175 * Currently defined opcodes.
176 */
177typedef enum __ns_opcode {
178 ns_o_query = 0, /*%< Standard query. */
179 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */
180 ns_o_status = 2, /*%< Name server status query (unsupported). */
181 /* Opcode 3 is undefined/reserved. */
182 ns_o_notify = 4, /*%< Zone change notification. */
183 ns_o_update = 5, /*%< Zone update message. */
184 ns_o_max = 6
185} ns_opcode;
186
187/*%
188 * Currently defined response codes.
189 */
190typedef enum __ns_rcode {
191 ns_r_noerror = 0, /*%< No error occurred. */
192 ns_r_formerr = 1, /*%< Format error. */
193 ns_r_servfail = 2, /*%< Server failure. */
194 ns_r_nxdomain = 3, /*%< Name error. */
195 ns_r_notimpl = 4, /*%< Unimplemented. */
196 ns_r_refused = 5, /*%< Operation refused. */
197 /* these are for BIND_UPDATE */
198 ns_r_yxdomain = 6, /*%< Name exists */
199 ns_r_yxrrset = 7, /*%< RRset exists */
200 ns_r_nxrrset = 8, /*%< RRset does not exist */
201 ns_r_notauth = 9, /*%< Not authoritative for zone */
202 ns_r_notzone = 10, /*%< Zone of record different from zone section */
203 ns_r_max = 11,
204 /* The following are EDNS extended rcodes */
205 ns_r_badvers = 16,
206 /* The following are TSIG errors */
207 ns_r_badsig = 16,
208 ns_r_badkey = 17,
209 ns_r_badtime = 18
210} ns_rcode;
211
212/* BIND_UPDATE */
213typedef enum __ns_update_operation {
214 ns_uop_delete = 0,
215 ns_uop_add = 1,
216 ns_uop_max = 2
217} ns_update_operation;
218
219/*%
220 * This structure is used for TSIG authenticated messages
221 */
222struct ns_tsig_key {
223 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
224 unsigned char *data;
225 int len;
226};
227typedef struct ns_tsig_key ns_tsig_key;
228
229/*%
230 * This structure is used for TSIG authenticated TCP messages
231 */
232struct ns_tcp_tsig_state {
233 int counter;
234 struct dst_key *key;
235 void *ctx;
236 unsigned char sig[NS_PACKETSZ];
237 int siglen;
238};
239typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
240
241#define NS_TSIG_FUDGE 300
242#define NS_TSIG_TCP_COUNT 100
243#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
244
245#define NS_TSIG_ERROR_NO_TSIG -10
246#define NS_TSIG_ERROR_NO_SPACE -11
247#define NS_TSIG_ERROR_FORMERR -12
248
249/*%
250 * Currently defined type values for resources and queries.
251 */
252typedef enum __ns_type {
253 ns_t_invalid = 0, /*%< Cookie. */
254 ns_t_a = 1, /*%< Host address. */
255 ns_t_ns = 2, /*%< Authoritative server. */
256 ns_t_md = 3, /*%< Mail destination. */
257 ns_t_mf = 4, /*%< Mail forwarder. */
258 ns_t_cname = 5, /*%< Canonical name. */
259 ns_t_soa = 6, /*%< Start of authority zone. */
260 ns_t_mb = 7, /*%< Mailbox domain name. */
261 ns_t_mg = 8, /*%< Mail group member. */
262 ns_t_mr = 9, /*%< Mail rename name. */
263 ns_t_null = 10, /*%< Null resource record. */
264 ns_t_wks = 11, /*%< Well known service. */
265 ns_t_ptr = 12, /*%< Domain name pointer. */
266 ns_t_hinfo = 13, /*%< Host information. */
267 ns_t_minfo = 14, /*%< Mailbox information. */
268 ns_t_mx = 15, /*%< Mail routing information. */
269 ns_t_txt = 16, /*%< Text strings. */
270 ns_t_rp = 17, /*%< Responsible person. */
271 ns_t_afsdb = 18, /*%< AFS cell database. */
272 ns_t_x25 = 19, /*%< X_25 calling address. */
273 ns_t_isdn = 20, /*%< ISDN calling address. */
274 ns_t_rt = 21, /*%< Router. */
275 ns_t_nsap = 22, /*%< NSAP address. */
276 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */
277 ns_t_sig = 24, /*%< Security signature. */
278 ns_t_key = 25, /*%< Security key. */
279 ns_t_px = 26, /*%< X.400 mail mapping. */
280 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */
281 ns_t_aaaa = 28, /*%< Ip6 Address. */
282 ns_t_loc = 29, /*%< Location Information. */
283 ns_t_nxt = 30, /*%< Next domain (security). */
284 ns_t_eid = 31, /*%< Endpoint identifier. */
285 ns_t_nimloc = 32, /*%< Nimrod Locator. */
286 ns_t_srv = 33, /*%< Server Selection. */
287 ns_t_atma = 34, /*%< ATM Address */
288 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */
289 ns_t_kx = 36, /*%< Key Exchange */
290 ns_t_cert = 37, /*%< Certification record */
291 ns_t_a6 = 38, /*%< IPv6 address (deprecates AAAA) */
292 ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */
293 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */
294 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */
295 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */
296 ns_t_tkey = 249, /*%< Transaction key */
297 ns_t_tsig = 250, /*%< Transaction signature. */
298 ns_t_ixfr = 251, /*%< Incremental zone transfer. */
299 ns_t_axfr = 252, /*%< Transfer zone of authority. */
300 ns_t_mailb = 253, /*%< Transfer mailbox records. */
301 ns_t_maila = 254, /*%< Transfer mail agent records. */
302 ns_t_any = 255, /*%< Wildcard match. */
303 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */
304 ns_t_max = 65536
305} ns_type;
306
307/* Exclusively a QTYPE? (not also an RTYPE) */
308#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
309 (t) == ns_t_mailb || (t) == ns_t_maila)
310/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
311#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
312/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
313#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
314#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
315#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
316 (t) == ns_t_zxfr)
317
318/*%
319 * Values for class field
320 */
321typedef enum __ns_class {
322 ns_c_invalid = 0, /*%< Cookie. */
323 ns_c_in = 1, /*%< Internet. */
324 ns_c_2 = 2, /*%< unallocated/unsupported. */
325 ns_c_chaos = 3, /*%< MIT Chaos-net. */
326 ns_c_hs = 4, /*%< MIT Hesiod. */
327 /* Query class values which do not appear in resource records */
328 ns_c_none = 254, /*%< for prereq. sections in update requests */
329 ns_c_any = 255, /*%< Wildcard match. */
330 ns_c_max = 65536
331} ns_class;
332
333/* DNSSEC constants. */
334
335typedef enum __ns_key_types {
336 ns_kt_rsa = 1, /*%< key type RSA/MD5 */
337 ns_kt_dh = 2, /*%< Diffie Hellman */
338 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */
339 ns_kt_private = 254 /*%< Private key type starts with OID */
340} ns_key_types;
341
342typedef enum __ns_cert_types {
343 cert_t_pkix = 1, /*%< PKIX (X.509v3) */
344 cert_t_spki = 2, /*%< SPKI */
345 cert_t_pgp = 3, /*%< PGP */
346 cert_t_url = 253, /*%< URL private type */
347 cert_t_oid = 254 /*%< OID private type */
348} ns_cert_types;
349
350/* Flags field of the KEY RR rdata. */
351#define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */
352#define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */
353#define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */
354#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */
355#define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */
356/* The type bits can also be interpreted independently, as single bits: */
357#define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */
358#define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */
359#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
360#define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */
361#define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */
362#define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */
363#define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */
364#define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */
365#define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */
366#define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */
367#define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */
368#define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */
369#define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */
370#define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */
371#define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */
372#define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */
373#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
374 NS_KEY_RESERVED4 | \
375 NS_KEY_RESERVED5 | \
376 NS_KEY_RESERVED8 | \
377 NS_KEY_RESERVED9 | \
378 NS_KEY_RESERVED10 | \
379 NS_KEY_RESERVED11 )
380#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
381/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
382#define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */
383#define NS_ALG_DH 2 /*%< Diffie Hellman KEY */
384#define NS_ALG_DSA 3 /*%< DSA KEY */
385#define NS_ALG_DSS NS_ALG_DSA
386#define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */
387#define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */
388/* Protocol values */
389/* value 0 is reserved */
390#define NS_KEY_PROT_TLS 1
391#define NS_KEY_PROT_EMAIL 2
392#define NS_KEY_PROT_DNSSEC 3
393#define NS_KEY_PROT_IPSEC 4
394#define NS_KEY_PROT_ANY 255
395
396/* Signatures */
397#define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */
398#define NS_MD5RSA_MAX_BITS 4096
399 /* Total of binary mod and exp */
400#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
401 /* Max length of text sig block */
402#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
403#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
404#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
405
406#define NS_DSA_SIG_SIZE 41
407#define NS_DSA_MIN_SIZE 213
408#define NS_DSA_MAX_BYTES 405
409
410/* Offsets into SIG record rdata to find various values */
411#define NS_SIG_TYPE 0 /*%< Type flags */
412#define NS_SIG_ALG 2 /*%< Algorithm */
413#define NS_SIG_LABELS 3 /*%< How many labels in name */
414#define NS_SIG_OTTL 4 /*%< Original TTL */
415#define NS_SIG_EXPIR 8 /*%< Expiration time */
416#define NS_SIG_SIGNED 12 /*%< Signature time */
417#define NS_SIG_FOOT 16 /*%< Key footprint */
418#define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */
419/* How RR types are represented as bit-flags in NXT records */
420#define NS_NXT_BITS 8
421#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
422#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
423#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
424#define NS_NXT_MAX 127
425
426/*%
427 * EDNS0 extended flags and option codes, host order.
428 */
429#define NS_OPT_DNSSEC_OK 0x8000U
430#define NS_OPT_NSID 3
431
432/*%
433 * Inline versions of get/put short/long. Pointer is advanced.
434 */
435#define NS_GET16(s, cp) do { \
436 register const u_char *t_cp = (const u_char *)(cp); \
437 (s) = ((u_int16_t)t_cp[0] << 8) \
438 | ((u_int16_t)t_cp[1]) \
439 ; \
440 (cp) += NS_INT16SZ; \
441} while (0)
442
443#define NS_GET32(l, cp) do { \
444 register const u_char *t_cp = (const u_char *)(cp); \
445 (l) = ((u_int32_t)t_cp[0] << 24) \
446 | ((u_int32_t)t_cp[1] << 16) \
447 | ((u_int32_t)t_cp[2] << 8) \
448 | ((u_int32_t)t_cp[3]) \
449 ; \
450 (cp) += NS_INT32SZ; \
451} while (0)
452
453#define NS_PUT16(s, cp) do { \
454 register u_int16_t t_s = (u_int16_t)(s); \
455 register u_char *t_cp = (u_char *)(cp); \
456 *t_cp++ = t_s >> 8; \
457 *t_cp = t_s; \
458 (cp) += NS_INT16SZ; \
459} while (0)
460
461#define NS_PUT32(l, cp) do { \
462 register u_int32_t t_l = (u_int32_t)(l); \
463 register u_char *t_cp = (u_char *)(cp); \
464 *t_cp++ = t_l >> 24; \
465 *t_cp++ = t_l >> 16; \
466 *t_cp++ = t_l >> 8; \
467 *t_cp = t_l; \
468 (cp) += NS_INT32SZ; \
469} while (0)
470
471/*%
472 * ANSI C identifier hiding for bind's lib/nameser.
473 */
474#define ns_msg_getflag __ns_msg_getflag
475#define ns_get16 __ns_get16
476#define ns_get32 __ns_get32
477#define ns_put16 __ns_put16
478#define ns_put32 __ns_put32
479#define ns_initparse __ns_initparse
480#define ns_skiprr __ns_skiprr
481#define ns_parserr __ns_parserr
482#define ns_sprintrr __ns_sprintrr
483#define ns_sprintrrf __ns_sprintrrf
484#define ns_format_ttl __ns_format_ttl
485#define ns_parse_ttl __ns_parse_ttl
486#if 0
487#define ns_datetosecs __ns_datetosecs
488#endif
489#define ns_name_ntol __ns_name_ntol
490#define ns_name_ntop __ns_name_ntop
491#define ns_name_pton __ns_name_pton
492#define ns_name_unpack __ns_name_unpack
493#define ns_name_pack __ns_name_pack
494#define ns_name_compress __ns_name_compress
495#define ns_name_uncompress __ns_name_uncompress
496#define ns_name_skip __ns_name_skip
497#define ns_name_rollback __ns_name_rollback
498#if 0
499#define ns_sign __ns_sign
500#define ns_sign2 __ns_sign2
501#define ns_sign_tcp __ns_sign_tcp
502#define ns_sign_tcp2 __ns_sign_tcp2
503#define ns_sign_tcp_init __ns_sign_tcp_init
504#define ns_find_tsig __ns_find_tsig
505#define ns_verify __ns_verify
506#define ns_verify_tcp __ns_verify_tcp
507#define ns_verify_tcp_init __ns_verify_tcp_init
508#endif
509#define ns_samedomain __ns_samedomain
510#if 0
511#define ns_subdomain __ns_subdomain
512#endif
513#define ns_makecanon __ns_makecanon
514#define ns_samename __ns_samename
515
516__BEGIN_DECLS
517int ns_msg_getflag(ns_msg, int);
518u_int ns_get16(const u_char *);
519u_long ns_get32(const u_char *);
520void ns_put16(u_int, u_char *);
521void ns_put32(u_long, u_char *);
522int ns_initparse(const u_char *, int, ns_msg *);
523int ns_skiprr(const u_char *, const u_char *, ns_sect, int);
524int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
525int ns_sprintrr(const ns_msg *, const ns_rr *,
526 const char *, const char *, char *, size_t);
527int ns_sprintrrf(const u_char *, size_t, const char *,
528 ns_class, ns_type, u_long, const u_char *,
529 size_t, const char *, const char *,
530 char *, size_t);
531int ns_format_ttl(u_long, char *, size_t);
532int ns_parse_ttl(const char *, u_long *);
533#if 0
534u_int32_t ns_datetosecs(const char *cp, int *errp);
535#endif
536int ns_name_ntol(const u_char *, u_char *, size_t);
537int ns_name_ntop(const u_char *, char *, size_t);
538int ns_name_pton(const char *, u_char *, size_t);
539int ns_name_unpack(const u_char *, const u_char *,
540 const u_char *, u_char *, size_t);
541int ns_name_pack(const u_char *, u_char *, int,
542 const u_char **, const u_char **);
543int ns_name_uncompress(const u_char *, const u_char *,
544 const u_char *, char *, size_t);
545int ns_name_compress(const char *, u_char *, size_t,
546 const u_char **, const u_char **);
547int ns_name_skip(const u_char **, const u_char *);
548void ns_name_rollback(const u_char *, const u_char **,
549 const u_char **);
550#if 0
551int ns_sign(u_char *, int *, int, int, void *,
552 const u_char *, int, u_char *, int *, time_t);
553int ns_sign2(u_char *, int *, int, int, void *,
554 const u_char *, int, u_char *, int *, time_t,
555 u_char **, u_char **);
556int ns_sign_tcp(u_char *, int *, int, int,
557 ns_tcp_tsig_state *, int);
558int ns_sign_tcp2(u_char *, int *, int, int,
559 ns_tcp_tsig_state *, int,
560 u_char **, u_char **);
561int ns_sign_tcp_init(void *, const u_char *, int,
562 ns_tcp_tsig_state *);
563u_char *ns_find_tsig(u_char *, u_char *);
564int ns_verify(u_char *, int *, void *,
565 const u_char *, int, u_char *, int *,
566 time_t *, int);
567int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int);
568int ns_verify_tcp_init(void *, const u_char *, int,
569 ns_tcp_tsig_state *);
570#endif
571int ns_samedomain(const char *, const char *);
572#if 0
573int ns_subdomain(const char *, const char *);
574#endif
575int ns_makecanon(const char *, char *, size_t);
576int ns_samename(const char *, const char *);
577__END_DECLS
578
579#ifdef BIND_4_COMPAT
580#include <arpa/nameser_compat.h>
581#endif
582
583#endif /* !_ARPA_NAMESER_H_ */
584/*! \file */
2 * Copyright (c) 1983, 1989, 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. 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.
20 *
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
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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
31 * SUCH DAMAGE.
32 */
33
34/*
35 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
36 * Copyright (c) 1996-1999 by Internet Software Consortium.
37 *
38 * Permission to use, copy, modify, and distribute this software for any
39 * purpose with or without fee is hereby granted, provided that the above
40 * copyright notice and this permission notice appear in all copies.
41 *
42 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
43 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
44 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
45 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
46 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
47 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
48 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
49 */
50
51/*
52 * $Id: nameser.h,v 1.7.18.2 2008/04/03 23:15:15 marka Exp $
53 * $FreeBSD: head/include/arpa/nameser.h 186090 2008-12-14 19:39:53Z ume $
54 */
55
56#ifndef _ARPA_NAMESER_H_
57#define _ARPA_NAMESER_H_
58
59/*! \file */
60
61#define BIND_4_COMPAT
62
63#include <sys/param.h>
64#include <sys/types.h>
65#include <sys/cdefs.h>
66
67/*%
68 * Revision information. This is the release date in YYYYMMDD format.
69 * It can change every day so the right thing to do with it is use it
70 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
71 * compare for equality; rather, use it to determine whether your libbind.a
72 * contains a new enough lib/nameser/ to support the feature you need.
73 */
74
75#define __NAMESER 19991006 /*%< New interface version stamp. */
76/*
77 * Define constants based on RFC0883, RFC1034, RFC 1035
78 */
79#define NS_PACKETSZ 512 /*%< default UDP packet size */
80#define NS_MAXDNAME 1025 /*%< maximum domain name */
81#define NS_MAXMSG 65535 /*%< maximum message size */
82#define NS_MAXCDNAME 255 /*%< maximum compressed domain name */
83#define NS_MAXLABEL 63 /*%< maximum length of domain label */
84#define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */
85#define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */
86#define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */
87#define NS_INT32SZ 4 /*%< #/bytes of data in a u_int32_t */
88#define NS_INT16SZ 2 /*%< #/bytes of data in a u_int16_t */
89#define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */
90#define NS_INADDRSZ 4 /*%< IPv4 T_A */
91#define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */
92#define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */
93#define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */
94/*
95 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
96 * in synch with it.
97 */
98typedef enum __ns_sect {
99 ns_s_qd = 0, /*%< Query: Question. */
100 ns_s_zn = 0, /*%< Update: Zone. */
101 ns_s_an = 1, /*%< Query: Answer. */
102 ns_s_pr = 1, /*%< Update: Prerequisites. */
103 ns_s_ns = 2, /*%< Query: Name servers. */
104 ns_s_ud = 2, /*%< Update: Update. */
105 ns_s_ar = 3, /*%< Query|Update: Additional records. */
106 ns_s_max = 4
107} ns_sect;
108
109/*%
110 * This is a message handle. It is caller allocated and has no dynamic data.
111 * This structure is intended to be opaque to all but ns_parse.c, thus the
112 * leading _'s on the member names. Use the accessor functions, not the _'s.
113 */
114typedef struct __ns_msg {
115 const u_char *_msg, *_eom;
116 u_int16_t _id, _flags, _counts[ns_s_max];
117 const u_char *_sections[ns_s_max];
118 ns_sect _sect;
119 int _rrnum;
120 const u_char *_msg_ptr;
121} ns_msg;
122
123/* Private data structure - do not use from outside library. */
124struct _ns_flagdata { int mask, shift; };
125extern struct _ns_flagdata _ns_flagdata[];
126
127/* Accessor macros - this is part of the public interface. */
128
129#define ns_msg_id(handle) ((handle)._id + 0)
130#define ns_msg_base(handle) ((handle)._msg + 0)
131#define ns_msg_end(handle) ((handle)._eom + 0)
132#define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
133#define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
134
135/*%
136 * This is a parsed record. It is caller allocated and has no dynamic data.
137 */
138typedef struct __ns_rr {
139 char name[NS_MAXDNAME];
140 u_int16_t type;
141 u_int16_t rr_class;
142 u_int32_t ttl;
143 u_int16_t rdlength;
144 const u_char * rdata;
145} ns_rr;
146
147/* Accessor macros - this is part of the public interface. */
148#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
149#define ns_rr_type(rr) ((ns_type)((rr).type + 0))
150#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
151#define ns_rr_ttl(rr) ((rr).ttl + 0)
152#define ns_rr_rdlen(rr) ((rr).rdlength + 0)
153#define ns_rr_rdata(rr) ((rr).rdata + 0)
154
155/*%
156 * These don't have to be in the same order as in the packet flags word,
157 * and they can even overlap in some cases, but they will need to be kept
158 * in synch with ns_parse.c:ns_flagdata[].
159 */
160typedef enum __ns_flag {
161 ns_f_qr, /*%< Question/Response. */
162 ns_f_opcode, /*%< Operation code. */
163 ns_f_aa, /*%< Authoritative Answer. */
164 ns_f_tc, /*%< Truncation occurred. */
165 ns_f_rd, /*%< Recursion Desired. */
166 ns_f_ra, /*%< Recursion Available. */
167 ns_f_z, /*%< MBZ. */
168 ns_f_ad, /*%< Authentic Data (DNSSEC). */
169 ns_f_cd, /*%< Checking Disabled (DNSSEC). */
170 ns_f_rcode, /*%< Response code. */
171 ns_f_max
172} ns_flag;
173
174/*%
175 * Currently defined opcodes.
176 */
177typedef enum __ns_opcode {
178 ns_o_query = 0, /*%< Standard query. */
179 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */
180 ns_o_status = 2, /*%< Name server status query (unsupported). */
181 /* Opcode 3 is undefined/reserved. */
182 ns_o_notify = 4, /*%< Zone change notification. */
183 ns_o_update = 5, /*%< Zone update message. */
184 ns_o_max = 6
185} ns_opcode;
186
187/*%
188 * Currently defined response codes.
189 */
190typedef enum __ns_rcode {
191 ns_r_noerror = 0, /*%< No error occurred. */
192 ns_r_formerr = 1, /*%< Format error. */
193 ns_r_servfail = 2, /*%< Server failure. */
194 ns_r_nxdomain = 3, /*%< Name error. */
195 ns_r_notimpl = 4, /*%< Unimplemented. */
196 ns_r_refused = 5, /*%< Operation refused. */
197 /* these are for BIND_UPDATE */
198 ns_r_yxdomain = 6, /*%< Name exists */
199 ns_r_yxrrset = 7, /*%< RRset exists */
200 ns_r_nxrrset = 8, /*%< RRset does not exist */
201 ns_r_notauth = 9, /*%< Not authoritative for zone */
202 ns_r_notzone = 10, /*%< Zone of record different from zone section */
203 ns_r_max = 11,
204 /* The following are EDNS extended rcodes */
205 ns_r_badvers = 16,
206 /* The following are TSIG errors */
207 ns_r_badsig = 16,
208 ns_r_badkey = 17,
209 ns_r_badtime = 18
210} ns_rcode;
211
212/* BIND_UPDATE */
213typedef enum __ns_update_operation {
214 ns_uop_delete = 0,
215 ns_uop_add = 1,
216 ns_uop_max = 2
217} ns_update_operation;
218
219/*%
220 * This structure is used for TSIG authenticated messages
221 */
222struct ns_tsig_key {
223 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
224 unsigned char *data;
225 int len;
226};
227typedef struct ns_tsig_key ns_tsig_key;
228
229/*%
230 * This structure is used for TSIG authenticated TCP messages
231 */
232struct ns_tcp_tsig_state {
233 int counter;
234 struct dst_key *key;
235 void *ctx;
236 unsigned char sig[NS_PACKETSZ];
237 int siglen;
238};
239typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
240
241#define NS_TSIG_FUDGE 300
242#define NS_TSIG_TCP_COUNT 100
243#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
244
245#define NS_TSIG_ERROR_NO_TSIG -10
246#define NS_TSIG_ERROR_NO_SPACE -11
247#define NS_TSIG_ERROR_FORMERR -12
248
249/*%
250 * Currently defined type values for resources and queries.
251 */
252typedef enum __ns_type {
253 ns_t_invalid = 0, /*%< Cookie. */
254 ns_t_a = 1, /*%< Host address. */
255 ns_t_ns = 2, /*%< Authoritative server. */
256 ns_t_md = 3, /*%< Mail destination. */
257 ns_t_mf = 4, /*%< Mail forwarder. */
258 ns_t_cname = 5, /*%< Canonical name. */
259 ns_t_soa = 6, /*%< Start of authority zone. */
260 ns_t_mb = 7, /*%< Mailbox domain name. */
261 ns_t_mg = 8, /*%< Mail group member. */
262 ns_t_mr = 9, /*%< Mail rename name. */
263 ns_t_null = 10, /*%< Null resource record. */
264 ns_t_wks = 11, /*%< Well known service. */
265 ns_t_ptr = 12, /*%< Domain name pointer. */
266 ns_t_hinfo = 13, /*%< Host information. */
267 ns_t_minfo = 14, /*%< Mailbox information. */
268 ns_t_mx = 15, /*%< Mail routing information. */
269 ns_t_txt = 16, /*%< Text strings. */
270 ns_t_rp = 17, /*%< Responsible person. */
271 ns_t_afsdb = 18, /*%< AFS cell database. */
272 ns_t_x25 = 19, /*%< X_25 calling address. */
273 ns_t_isdn = 20, /*%< ISDN calling address. */
274 ns_t_rt = 21, /*%< Router. */
275 ns_t_nsap = 22, /*%< NSAP address. */
276 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */
277 ns_t_sig = 24, /*%< Security signature. */
278 ns_t_key = 25, /*%< Security key. */
279 ns_t_px = 26, /*%< X.400 mail mapping. */
280 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */
281 ns_t_aaaa = 28, /*%< Ip6 Address. */
282 ns_t_loc = 29, /*%< Location Information. */
283 ns_t_nxt = 30, /*%< Next domain (security). */
284 ns_t_eid = 31, /*%< Endpoint identifier. */
285 ns_t_nimloc = 32, /*%< Nimrod Locator. */
286 ns_t_srv = 33, /*%< Server Selection. */
287 ns_t_atma = 34, /*%< ATM Address */
288 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */
289 ns_t_kx = 36, /*%< Key Exchange */
290 ns_t_cert = 37, /*%< Certification record */
291 ns_t_a6 = 38, /*%< IPv6 address (deprecates AAAA) */
292 ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */
293 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */
294 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */
295 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */
296 ns_t_tkey = 249, /*%< Transaction key */
297 ns_t_tsig = 250, /*%< Transaction signature. */
298 ns_t_ixfr = 251, /*%< Incremental zone transfer. */
299 ns_t_axfr = 252, /*%< Transfer zone of authority. */
300 ns_t_mailb = 253, /*%< Transfer mailbox records. */
301 ns_t_maila = 254, /*%< Transfer mail agent records. */
302 ns_t_any = 255, /*%< Wildcard match. */
303 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */
304 ns_t_max = 65536
305} ns_type;
306
307/* Exclusively a QTYPE? (not also an RTYPE) */
308#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
309 (t) == ns_t_mailb || (t) == ns_t_maila)
310/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
311#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
312/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
313#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
314#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
315#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
316 (t) == ns_t_zxfr)
317
318/*%
319 * Values for class field
320 */
321typedef enum __ns_class {
322 ns_c_invalid = 0, /*%< Cookie. */
323 ns_c_in = 1, /*%< Internet. */
324 ns_c_2 = 2, /*%< unallocated/unsupported. */
325 ns_c_chaos = 3, /*%< MIT Chaos-net. */
326 ns_c_hs = 4, /*%< MIT Hesiod. */
327 /* Query class values which do not appear in resource records */
328 ns_c_none = 254, /*%< for prereq. sections in update requests */
329 ns_c_any = 255, /*%< Wildcard match. */
330 ns_c_max = 65536
331} ns_class;
332
333/* DNSSEC constants. */
334
335typedef enum __ns_key_types {
336 ns_kt_rsa = 1, /*%< key type RSA/MD5 */
337 ns_kt_dh = 2, /*%< Diffie Hellman */
338 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */
339 ns_kt_private = 254 /*%< Private key type starts with OID */
340} ns_key_types;
341
342typedef enum __ns_cert_types {
343 cert_t_pkix = 1, /*%< PKIX (X.509v3) */
344 cert_t_spki = 2, /*%< SPKI */
345 cert_t_pgp = 3, /*%< PGP */
346 cert_t_url = 253, /*%< URL private type */
347 cert_t_oid = 254 /*%< OID private type */
348} ns_cert_types;
349
350/* Flags field of the KEY RR rdata. */
351#define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */
352#define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */
353#define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */
354#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */
355#define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */
356/* The type bits can also be interpreted independently, as single bits: */
357#define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */
358#define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */
359#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
360#define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */
361#define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */
362#define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */
363#define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */
364#define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */
365#define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */
366#define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */
367#define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */
368#define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */
369#define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */
370#define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */
371#define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */
372#define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */
373#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
374 NS_KEY_RESERVED4 | \
375 NS_KEY_RESERVED5 | \
376 NS_KEY_RESERVED8 | \
377 NS_KEY_RESERVED9 | \
378 NS_KEY_RESERVED10 | \
379 NS_KEY_RESERVED11 )
380#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
381/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
382#define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */
383#define NS_ALG_DH 2 /*%< Diffie Hellman KEY */
384#define NS_ALG_DSA 3 /*%< DSA KEY */
385#define NS_ALG_DSS NS_ALG_DSA
386#define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */
387#define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */
388/* Protocol values */
389/* value 0 is reserved */
390#define NS_KEY_PROT_TLS 1
391#define NS_KEY_PROT_EMAIL 2
392#define NS_KEY_PROT_DNSSEC 3
393#define NS_KEY_PROT_IPSEC 4
394#define NS_KEY_PROT_ANY 255
395
396/* Signatures */
397#define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */
398#define NS_MD5RSA_MAX_BITS 4096
399 /* Total of binary mod and exp */
400#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
401 /* Max length of text sig block */
402#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
403#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
404#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
405
406#define NS_DSA_SIG_SIZE 41
407#define NS_DSA_MIN_SIZE 213
408#define NS_DSA_MAX_BYTES 405
409
410/* Offsets into SIG record rdata to find various values */
411#define NS_SIG_TYPE 0 /*%< Type flags */
412#define NS_SIG_ALG 2 /*%< Algorithm */
413#define NS_SIG_LABELS 3 /*%< How many labels in name */
414#define NS_SIG_OTTL 4 /*%< Original TTL */
415#define NS_SIG_EXPIR 8 /*%< Expiration time */
416#define NS_SIG_SIGNED 12 /*%< Signature time */
417#define NS_SIG_FOOT 16 /*%< Key footprint */
418#define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */
419/* How RR types are represented as bit-flags in NXT records */
420#define NS_NXT_BITS 8
421#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
422#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
423#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
424#define NS_NXT_MAX 127
425
426/*%
427 * EDNS0 extended flags and option codes, host order.
428 */
429#define NS_OPT_DNSSEC_OK 0x8000U
430#define NS_OPT_NSID 3
431
432/*%
433 * Inline versions of get/put short/long. Pointer is advanced.
434 */
435#define NS_GET16(s, cp) do { \
436 register const u_char *t_cp = (const u_char *)(cp); \
437 (s) = ((u_int16_t)t_cp[0] << 8) \
438 | ((u_int16_t)t_cp[1]) \
439 ; \
440 (cp) += NS_INT16SZ; \
441} while (0)
442
443#define NS_GET32(l, cp) do { \
444 register const u_char *t_cp = (const u_char *)(cp); \
445 (l) = ((u_int32_t)t_cp[0] << 24) \
446 | ((u_int32_t)t_cp[1] << 16) \
447 | ((u_int32_t)t_cp[2] << 8) \
448 | ((u_int32_t)t_cp[3]) \
449 ; \
450 (cp) += NS_INT32SZ; \
451} while (0)
452
453#define NS_PUT16(s, cp) do { \
454 register u_int16_t t_s = (u_int16_t)(s); \
455 register u_char *t_cp = (u_char *)(cp); \
456 *t_cp++ = t_s >> 8; \
457 *t_cp = t_s; \
458 (cp) += NS_INT16SZ; \
459} while (0)
460
461#define NS_PUT32(l, cp) do { \
462 register u_int32_t t_l = (u_int32_t)(l); \
463 register u_char *t_cp = (u_char *)(cp); \
464 *t_cp++ = t_l >> 24; \
465 *t_cp++ = t_l >> 16; \
466 *t_cp++ = t_l >> 8; \
467 *t_cp = t_l; \
468 (cp) += NS_INT32SZ; \
469} while (0)
470
471/*%
472 * ANSI C identifier hiding for bind's lib/nameser.
473 */
474#define ns_msg_getflag __ns_msg_getflag
475#define ns_get16 __ns_get16
476#define ns_get32 __ns_get32
477#define ns_put16 __ns_put16
478#define ns_put32 __ns_put32
479#define ns_initparse __ns_initparse
480#define ns_skiprr __ns_skiprr
481#define ns_parserr __ns_parserr
482#define ns_sprintrr __ns_sprintrr
483#define ns_sprintrrf __ns_sprintrrf
484#define ns_format_ttl __ns_format_ttl
485#define ns_parse_ttl __ns_parse_ttl
486#if 0
487#define ns_datetosecs __ns_datetosecs
488#endif
489#define ns_name_ntol __ns_name_ntol
490#define ns_name_ntop __ns_name_ntop
491#define ns_name_pton __ns_name_pton
492#define ns_name_unpack __ns_name_unpack
493#define ns_name_pack __ns_name_pack
494#define ns_name_compress __ns_name_compress
495#define ns_name_uncompress __ns_name_uncompress
496#define ns_name_skip __ns_name_skip
497#define ns_name_rollback __ns_name_rollback
498#if 0
499#define ns_sign __ns_sign
500#define ns_sign2 __ns_sign2
501#define ns_sign_tcp __ns_sign_tcp
502#define ns_sign_tcp2 __ns_sign_tcp2
503#define ns_sign_tcp_init __ns_sign_tcp_init
504#define ns_find_tsig __ns_find_tsig
505#define ns_verify __ns_verify
506#define ns_verify_tcp __ns_verify_tcp
507#define ns_verify_tcp_init __ns_verify_tcp_init
508#endif
509#define ns_samedomain __ns_samedomain
510#if 0
511#define ns_subdomain __ns_subdomain
512#endif
513#define ns_makecanon __ns_makecanon
514#define ns_samename __ns_samename
515
516__BEGIN_DECLS
517int ns_msg_getflag(ns_msg, int);
518u_int ns_get16(const u_char *);
519u_long ns_get32(const u_char *);
520void ns_put16(u_int, u_char *);
521void ns_put32(u_long, u_char *);
522int ns_initparse(const u_char *, int, ns_msg *);
523int ns_skiprr(const u_char *, const u_char *, ns_sect, int);
524int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
525int ns_sprintrr(const ns_msg *, const ns_rr *,
526 const char *, const char *, char *, size_t);
527int ns_sprintrrf(const u_char *, size_t, const char *,
528 ns_class, ns_type, u_long, const u_char *,
529 size_t, const char *, const char *,
530 char *, size_t);
531int ns_format_ttl(u_long, char *, size_t);
532int ns_parse_ttl(const char *, u_long *);
533#if 0
534u_int32_t ns_datetosecs(const char *cp, int *errp);
535#endif
536int ns_name_ntol(const u_char *, u_char *, size_t);
537int ns_name_ntop(const u_char *, char *, size_t);
538int ns_name_pton(const char *, u_char *, size_t);
539int ns_name_unpack(const u_char *, const u_char *,
540 const u_char *, u_char *, size_t);
541int ns_name_pack(const u_char *, u_char *, int,
542 const u_char **, const u_char **);
543int ns_name_uncompress(const u_char *, const u_char *,
544 const u_char *, char *, size_t);
545int ns_name_compress(const char *, u_char *, size_t,
546 const u_char **, const u_char **);
547int ns_name_skip(const u_char **, const u_char *);
548void ns_name_rollback(const u_char *, const u_char **,
549 const u_char **);
550#if 0
551int ns_sign(u_char *, int *, int, int, void *,
552 const u_char *, int, u_char *, int *, time_t);
553int ns_sign2(u_char *, int *, int, int, void *,
554 const u_char *, int, u_char *, int *, time_t,
555 u_char **, u_char **);
556int ns_sign_tcp(u_char *, int *, int, int,
557 ns_tcp_tsig_state *, int);
558int ns_sign_tcp2(u_char *, int *, int, int,
559 ns_tcp_tsig_state *, int,
560 u_char **, u_char **);
561int ns_sign_tcp_init(void *, const u_char *, int,
562 ns_tcp_tsig_state *);
563u_char *ns_find_tsig(u_char *, u_char *);
564int ns_verify(u_char *, int *, void *,
565 const u_char *, int, u_char *, int *,
566 time_t *, int);
567int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int);
568int ns_verify_tcp_init(void *, const u_char *, int,
569 ns_tcp_tsig_state *);
570#endif
571int ns_samedomain(const char *, const char *);
572#if 0
573int ns_subdomain(const char *, const char *);
574#endif
575int ns_makecanon(const char *, char *, size_t);
576int ns_samename(const char *, const char *);
577__END_DECLS
578
579#ifdef BIND_4_COMPAT
580#include <arpa/nameser_compat.h>
581#endif
582
583#endif /* !_ARPA_NAMESER_H_ */
584/*! \file */