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. 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.
16 *
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.
28 */
29
30/*
31 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
32 * Copyright (c) 1996-1999 by Internet Software Consortium.
33 *
34 * Permission to use, copy, modify, and distribute this software for any
35 * purpose with or without fee is hereby granted, provided that the above
36 * copyright notice and this permission notice appear in all copies.
37 *
38 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
39 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
40 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
41 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
42 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
43 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
44 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
45 */
46
47/*
48 * $Id: nameser.h,v 1.7.18.2 2008/04/03 23:15:15 marka Exp $
49 * $FreeBSD: head/include/arpa/nameser.h 203965 2010-02-16 19:46:46Z imp $
50 */
51
52#ifndef _ARPA_NAMESER_H_
53#define _ARPA_NAMESER_H_
54
55/*! \file */
56
57#define BIND_4_COMPAT
58
59#include <sys/param.h>
60#include <sys/types.h>
61#include <sys/cdefs.h>
62
63/*%
64 * Revision information. This is the release date in YYYYMMDD format.
65 * It can change every day so the right thing to do with it is use it
66 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
67 * compare for equality; rather, use it to determine whether your libbind.a
68 * contains a new enough lib/nameser/ to support the feature you need.
69 */
70
71#define __NAMESER 19991006 /*%< New interface version stamp. */
72/*
73 * Define constants based on RFC0883, RFC1034, RFC 1035
74 */
75#define NS_PACKETSZ 512 /*%< default UDP packet size */
76#define NS_MAXDNAME 1025 /*%< maximum domain name */
77#define NS_MAXMSG 65535 /*%< maximum message size */
78#define NS_MAXCDNAME 255 /*%< maximum compressed domain name */
79#define NS_MAXLABEL 63 /*%< maximum length of domain label */
80#define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */
81#define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */
82#define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */
83#define NS_INT32SZ 4 /*%< #/bytes of data in a u_int32_t */
84#define NS_INT16SZ 2 /*%< #/bytes of data in a u_int16_t */
85#define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */
86#define NS_INADDRSZ 4 /*%< IPv4 T_A */
87#define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */
88#define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */
89#define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */
90/*
91 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
92 * in synch with it.
93 */
94typedef enum __ns_sect {
95 ns_s_qd = 0, /*%< Query: Question. */
96 ns_s_zn = 0, /*%< Update: Zone. */
97 ns_s_an = 1, /*%< Query: Answer. */
98 ns_s_pr = 1, /*%< Update: Prerequisites. */
99 ns_s_ns = 2, /*%< Query: Name servers. */
100 ns_s_ud = 2, /*%< Update: Update. */
101 ns_s_ar = 3, /*%< Query|Update: Additional records. */
102 ns_s_max = 4
103} ns_sect;
104
105/*%
106 * This is a message handle. It is caller allocated and has no dynamic data.
107 * This structure is intended to be opaque to all but ns_parse.c, thus the
108 * leading _'s on the member names. Use the accessor functions, not the _'s.
109 */
110typedef struct __ns_msg {
111 const u_char *_msg, *_eom;
112 u_int16_t _id, _flags, _counts[ns_s_max];
113 const u_char *_sections[ns_s_max];
114 ns_sect _sect;
115 int _rrnum;
116 const u_char *_msg_ptr;
117} ns_msg;
118
119/* Private data structure - do not use from outside library. */
120struct _ns_flagdata { int mask, shift; };
121extern struct _ns_flagdata _ns_flagdata[];
122
123/* Accessor macros - this is part of the public interface. */
124
125#define ns_msg_id(handle) ((handle)._id + 0)
126#define ns_msg_base(handle) ((handle)._msg + 0)
127#define ns_msg_end(handle) ((handle)._eom + 0)
128#define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
129#define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
130
131/*%
132 * This is a parsed record. It is caller allocated and has no dynamic data.
133 */
134typedef struct __ns_rr {
135 char name[NS_MAXDNAME];
136 u_int16_t type;
137 u_int16_t rr_class;
138 u_int32_t ttl;
139 u_int16_t rdlength;
140 const u_char * rdata;
141} ns_rr;
142
143/* Accessor macros - this is part of the public interface. */
144#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
145#define ns_rr_type(rr) ((ns_type)((rr).type + 0))
146#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
147#define ns_rr_ttl(rr) ((rr).ttl + 0)
148#define ns_rr_rdlen(rr) ((rr).rdlength + 0)
149#define ns_rr_rdata(rr) ((rr).rdata + 0)
150
151/*%
152 * These don't have to be in the same order as in the packet flags word,
153 * and they can even overlap in some cases, but they will need to be kept
154 * in synch with ns_parse.c:ns_flagdata[].
155 */
156typedef enum __ns_flag {
157 ns_f_qr, /*%< Question/Response. */
158 ns_f_opcode, /*%< Operation code. */
159 ns_f_aa, /*%< Authoritative Answer. */
160 ns_f_tc, /*%< Truncation occurred. */
161 ns_f_rd, /*%< Recursion Desired. */
162 ns_f_ra, /*%< Recursion Available. */
163 ns_f_z, /*%< MBZ. */
164 ns_f_ad, /*%< Authentic Data (DNSSEC). */
165 ns_f_cd, /*%< Checking Disabled (DNSSEC). */
166 ns_f_rcode, /*%< Response code. */
167 ns_f_max
168} ns_flag;
169
170/*%
171 * Currently defined opcodes.
172 */
173typedef enum __ns_opcode {
174 ns_o_query = 0, /*%< Standard query. */
175 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */
176 ns_o_status = 2, /*%< Name server status query (unsupported). */
177 /* Opcode 3 is undefined/reserved. */
178 ns_o_notify = 4, /*%< Zone change notification. */
179 ns_o_update = 5, /*%< Zone update message. */
180 ns_o_max = 6
181} ns_opcode;
182
183/*%
184 * Currently defined response codes.
185 */
186typedef enum __ns_rcode {
187 ns_r_noerror = 0, /*%< No error occurred. */
188 ns_r_formerr = 1, /*%< Format error. */
189 ns_r_servfail = 2, /*%< Server failure. */
190 ns_r_nxdomain = 3, /*%< Name error. */
191 ns_r_notimpl = 4, /*%< Unimplemented. */
192 ns_r_refused = 5, /*%< Operation refused. */
193 /* these are for BIND_UPDATE */
194 ns_r_yxdomain = 6, /*%< Name exists */
195 ns_r_yxrrset = 7, /*%< RRset exists */
196 ns_r_nxrrset = 8, /*%< RRset does not exist */
197 ns_r_notauth = 9, /*%< Not authoritative for zone */
198 ns_r_notzone = 10, /*%< Zone of record different from zone section */
199 ns_r_max = 11,
200 /* The following are EDNS extended rcodes */
201 ns_r_badvers = 16,
202 /* The following are TSIG errors */
203 ns_r_badsig = 16,
204 ns_r_badkey = 17,
205 ns_r_badtime = 18
206} ns_rcode;
207
208/* BIND_UPDATE */
209typedef enum __ns_update_operation {
210 ns_uop_delete = 0,
211 ns_uop_add = 1,
212 ns_uop_max = 2
213} ns_update_operation;
214
215/*%
216 * This structure is used for TSIG authenticated messages
217 */
218struct ns_tsig_key {
219 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
220 unsigned char *data;
221 int len;
222};
223typedef struct ns_tsig_key ns_tsig_key;
224
225/*%
226 * This structure is used for TSIG authenticated TCP messages
227 */
228struct ns_tcp_tsig_state {
229 int counter;
230 struct dst_key *key;
231 void *ctx;
232 unsigned char sig[NS_PACKETSZ];
233 int siglen;
234};
235typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
236
237#define NS_TSIG_FUDGE 300
238#define NS_TSIG_TCP_COUNT 100
239#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
240
241#define NS_TSIG_ERROR_NO_TSIG -10
242#define NS_TSIG_ERROR_NO_SPACE -11
243#define NS_TSIG_ERROR_FORMERR -12
244
245/*%
246 * Currently defined type values for resources and queries.
247 */
248typedef enum __ns_type {
249 ns_t_invalid = 0, /*%< Cookie. */
250 ns_t_a = 1, /*%< Host address. */
251 ns_t_ns = 2, /*%< Authoritative server. */
252 ns_t_md = 3, /*%< Mail destination. */
253 ns_t_mf = 4, /*%< Mail forwarder. */
254 ns_t_cname = 5, /*%< Canonical name. */
255 ns_t_soa = 6, /*%< Start of authority zone. */
256 ns_t_mb = 7, /*%< Mailbox domain name. */
257 ns_t_mg = 8, /*%< Mail group member. */
258 ns_t_mr = 9, /*%< Mail rename name. */
259 ns_t_null = 10, /*%< Null resource record. */
260 ns_t_wks = 11, /*%< Well known service. */
261 ns_t_ptr = 12, /*%< Domain name pointer. */
262 ns_t_hinfo = 13, /*%< Host information. */
263 ns_t_minfo = 14, /*%< Mailbox information. */
264 ns_t_mx = 15, /*%< Mail routing information. */
265 ns_t_txt = 16, /*%< Text strings. */
266 ns_t_rp = 17, /*%< Responsible person. */
267 ns_t_afsdb = 18, /*%< AFS cell database. */
268 ns_t_x25 = 19, /*%< X_25 calling address. */
269 ns_t_isdn = 20, /*%< ISDN calling address. */
270 ns_t_rt = 21, /*%< Router. */
271 ns_t_nsap = 22, /*%< NSAP address. */
272 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */
273 ns_t_sig = 24, /*%< Security signature. */
274 ns_t_key = 25, /*%< Security key. */
275 ns_t_px = 26, /*%< X.400 mail mapping. */
276 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */
277 ns_t_aaaa = 28, /*%< Ip6 Address. */
278 ns_t_loc = 29, /*%< Location Information. */
279 ns_t_nxt = 30, /*%< Next domain (security). */
280 ns_t_eid = 31, /*%< Endpoint identifier. */
281 ns_t_nimloc = 32, /*%< Nimrod Locator. */
282 ns_t_srv = 33, /*%< Server Selection. */
283 ns_t_atma = 34, /*%< ATM Address */
284 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */
285 ns_t_kx = 36, /*%< Key Exchange */
286 ns_t_cert = 37, /*%< Certification record */
287 ns_t_a6 = 38, /*%< IPv6 address (deprecates AAAA) */
288 ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */
289 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */
290 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */
291 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */
292 ns_t_tkey = 249, /*%< Transaction key */
293 ns_t_tsig = 250, /*%< Transaction signature. */
294 ns_t_ixfr = 251, /*%< Incremental zone transfer. */
295 ns_t_axfr = 252, /*%< Transfer zone of authority. */
296 ns_t_mailb = 253, /*%< Transfer mailbox records. */
297 ns_t_maila = 254, /*%< Transfer mail agent records. */
298 ns_t_any = 255, /*%< Wildcard match. */
299 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */
300 ns_t_max = 65536
301} ns_type;
302
303/* Exclusively a QTYPE? (not also an RTYPE) */
304#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
305 (t) == ns_t_mailb || (t) == ns_t_maila)
306/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
307#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
308/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
309#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
310#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
311#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
312 (t) == ns_t_zxfr)
313
314/*%
315 * Values for class field
316 */
317typedef enum __ns_class {
318 ns_c_invalid = 0, /*%< Cookie. */
319 ns_c_in = 1, /*%< Internet. */
320 ns_c_2 = 2, /*%< unallocated/unsupported. */
321 ns_c_chaos = 3, /*%< MIT Chaos-net. */
322 ns_c_hs = 4, /*%< MIT Hesiod. */
323 /* Query class values which do not appear in resource records */
324 ns_c_none = 254, /*%< for prereq. sections in update requests */
325 ns_c_any = 255, /*%< Wildcard match. */
326 ns_c_max = 65536
327} ns_class;
328
329/* DNSSEC constants. */
330
331typedef enum __ns_key_types {
332 ns_kt_rsa = 1, /*%< key type RSA/MD5 */
333 ns_kt_dh = 2, /*%< Diffie Hellman */
334 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */
335 ns_kt_private = 254 /*%< Private key type starts with OID */
336} ns_key_types;
337
338typedef enum __ns_cert_types {
339 cert_t_pkix = 1, /*%< PKIX (X.509v3) */
340 cert_t_spki = 2, /*%< SPKI */
341 cert_t_pgp = 3, /*%< PGP */
342 cert_t_url = 253, /*%< URL private type */
343 cert_t_oid = 254 /*%< OID private type */
344} ns_cert_types;
345
346/* Flags field of the KEY RR rdata. */
347#define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */
348#define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */
349#define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */
350#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */
351#define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */
352/* The type bits can also be interpreted independently, as single bits: */
353#define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */
354#define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */
355#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
356#define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */
357#define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */
358#define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */
359#define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */
360#define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */
361#define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */
362#define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */
363#define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */
364#define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */
365#define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */
366#define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */
367#define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */
368#define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */
369#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
370 NS_KEY_RESERVED4 | \
371 NS_KEY_RESERVED5 | \
372 NS_KEY_RESERVED8 | \
373 NS_KEY_RESERVED9 | \
374 NS_KEY_RESERVED10 | \
375 NS_KEY_RESERVED11 )
376#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
377/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
378#define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */
379#define NS_ALG_DH 2 /*%< Diffie Hellman KEY */
380#define NS_ALG_DSA 3 /*%< DSA KEY */
381#define NS_ALG_DSS NS_ALG_DSA
382#define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */
383#define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */
384/* Protocol values */
385/* value 0 is reserved */
386#define NS_KEY_PROT_TLS 1
387#define NS_KEY_PROT_EMAIL 2
388#define NS_KEY_PROT_DNSSEC 3
389#define NS_KEY_PROT_IPSEC 4
390#define NS_KEY_PROT_ANY 255
391
392/* Signatures */
393#define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */
394#define NS_MD5RSA_MAX_BITS 4096
395 /* Total of binary mod and exp */
396#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
397 /* Max length of text sig block */
398#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
399#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
400#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
401
402#define NS_DSA_SIG_SIZE 41
403#define NS_DSA_MIN_SIZE 213
404#define NS_DSA_MAX_BYTES 405
405
406/* Offsets into SIG record rdata to find various values */
407#define NS_SIG_TYPE 0 /*%< Type flags */
408#define NS_SIG_ALG 2 /*%< Algorithm */
409#define NS_SIG_LABELS 3 /*%< How many labels in name */
410#define NS_SIG_OTTL 4 /*%< Original TTL */
411#define NS_SIG_EXPIR 8 /*%< Expiration time */
412#define NS_SIG_SIGNED 12 /*%< Signature time */
413#define NS_SIG_FOOT 16 /*%< Key footprint */
414#define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */
415/* How RR types are represented as bit-flags in NXT records */
416#define NS_NXT_BITS 8
417#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
418#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
419#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
420#define NS_NXT_MAX 127
421
422/*%
423 * EDNS0 extended flags and option codes, host order.
424 */
425#define NS_OPT_DNSSEC_OK 0x8000U
426#define NS_OPT_NSID 3
427
428/*%
429 * Inline versions of get/put short/long. Pointer is advanced.
430 */
431#define NS_GET16(s, cp) do { \
432 register const u_char *t_cp = (const u_char *)(cp); \
433 (s) = ((u_int16_t)t_cp[0] << 8) \
434 | ((u_int16_t)t_cp[1]) \
435 ; \
436 (cp) += NS_INT16SZ; \
437} while (0)
438
439#define NS_GET32(l, cp) do { \
440 register const u_char *t_cp = (const u_char *)(cp); \
441 (l) = ((u_int32_t)t_cp[0] << 24) \
442 | ((u_int32_t)t_cp[1] << 16) \
443 | ((u_int32_t)t_cp[2] << 8) \
444 | ((u_int32_t)t_cp[3]) \
445 ; \
446 (cp) += NS_INT32SZ; \
447} while (0)
448
449#define NS_PUT16(s, cp) do { \
450 register u_int16_t t_s = (u_int16_t)(s); \
451 register u_char *t_cp = (u_char *)(cp); \
452 *t_cp++ = t_s >> 8; \
453 *t_cp = t_s; \
454 (cp) += NS_INT16SZ; \
455} while (0)
456
457#define NS_PUT32(l, cp) do { \
458 register u_int32_t t_l = (u_int32_t)(l); \
459 register u_char *t_cp = (u_char *)(cp); \
460 *t_cp++ = t_l >> 24; \
461 *t_cp++ = t_l >> 16; \
462 *t_cp++ = t_l >> 8; \
463 *t_cp = t_l; \
464 (cp) += NS_INT32SZ; \
465} while (0)
466
467/*%
468 * ANSI C identifier hiding for bind's lib/nameser.
469 */
470#define ns_msg_getflag __ns_msg_getflag
471#define ns_get16 __ns_get16
472#define ns_get32 __ns_get32
473#define ns_put16 __ns_put16
474#define ns_put32 __ns_put32
475#define ns_initparse __ns_initparse
476#define ns_skiprr __ns_skiprr
477#define ns_parserr __ns_parserr
478#define ns_sprintrr __ns_sprintrr
479#define ns_sprintrrf __ns_sprintrrf
480#define ns_format_ttl __ns_format_ttl
481#define ns_parse_ttl __ns_parse_ttl
482#if 0
483#define ns_datetosecs __ns_datetosecs
484#endif
485#define ns_name_ntol __ns_name_ntol
486#define ns_name_ntop __ns_name_ntop
487#define ns_name_pton __ns_name_pton
488#define ns_name_unpack __ns_name_unpack
489#define ns_name_pack __ns_name_pack
490#define ns_name_compress __ns_name_compress
491#define ns_name_uncompress __ns_name_uncompress
492#define ns_name_skip __ns_name_skip
493#define ns_name_rollback __ns_name_rollback
494#if 0
495#define ns_sign __ns_sign
496#define ns_sign2 __ns_sign2
497#define ns_sign_tcp __ns_sign_tcp
498#define ns_sign_tcp2 __ns_sign_tcp2
499#define ns_sign_tcp_init __ns_sign_tcp_init
500#define ns_find_tsig __ns_find_tsig
501#define ns_verify __ns_verify
502#define ns_verify_tcp __ns_verify_tcp
503#define ns_verify_tcp_init __ns_verify_tcp_init
504#endif
505#define ns_samedomain __ns_samedomain
506#if 0
507#define ns_subdomain __ns_subdomain
508#endif
509#define ns_makecanon __ns_makecanon
510#define ns_samename __ns_samename
511
512__BEGIN_DECLS
513int ns_msg_getflag(ns_msg, int);
514u_int ns_get16(const u_char *);
515u_long ns_get32(const u_char *);
516void ns_put16(u_int, u_char *);
517void ns_put32(u_long, u_char *);
518int ns_initparse(const u_char *, int, ns_msg *);
519int ns_skiprr(const u_char *, const u_char *, ns_sect, int);
520int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
521int ns_sprintrr(const ns_msg *, const ns_rr *,
522 const char *, const char *, char *, size_t);
523int ns_sprintrrf(const u_char *, size_t, const char *,
524 ns_class, ns_type, u_long, const u_char *,
525 size_t, const char *, const char *,
526 char *, size_t);
527int ns_format_ttl(u_long, char *, size_t);
528int ns_parse_ttl(const char *, u_long *);
529#if 0
530u_int32_t ns_datetosecs(const char *cp, int *errp);
531#endif
532int ns_name_ntol(const u_char *, u_char *, size_t);
533int ns_name_ntop(const u_char *, char *, size_t);
534int ns_name_pton(const char *, u_char *, size_t);
535int ns_name_unpack(const u_char *, const u_char *,
536 const u_char *, u_char *, size_t);
537int ns_name_pack(const u_char *, u_char *, int,
538 const u_char **, const u_char **);
539int ns_name_uncompress(const u_char *, const u_char *,
540 const u_char *, char *, size_t);
541int ns_name_compress(const char *, u_char *, size_t,
542 const u_char **, const u_char **);
543int ns_name_skip(const u_char **, const u_char *);
544void ns_name_rollback(const u_char *, const u_char **,
545 const u_char **);
546#if 0
547int ns_sign(u_char *, int *, int, int, void *,
548 const u_char *, int, u_char *, int *, time_t);
549int ns_sign2(u_char *, int *, int, int, void *,
550 const u_char *, int, u_char *, int *, time_t,
551 u_char **, u_char **);
552int ns_sign_tcp(u_char *, int *, int, int,
553 ns_tcp_tsig_state *, int);
554int ns_sign_tcp2(u_char *, int *, int, int,
555 ns_tcp_tsig_state *, int,
556 u_char **, u_char **);
557int ns_sign_tcp_init(void *, const u_char *, int,
558 ns_tcp_tsig_state *);
559u_char *ns_find_tsig(u_char *, u_char *);
560int ns_verify(u_char *, int *, void *,
561 const u_char *, int, u_char *, int *,
562 time_t *, int);
563int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int);
564int ns_verify_tcp_init(void *, const u_char *, int,
565 ns_tcp_tsig_state *);
566#endif
567int ns_samedomain(const char *, const char *);
568#if 0
569int ns_subdomain(const char *, const char *);
570#endif
571int ns_makecanon(const char *, char *, size_t);
572int ns_samename(const char *, const char *);
573__END_DECLS
574
575#ifdef BIND_4_COMPAT
576#include <arpa/nameser_compat.h>
577#endif
578
579#endif /* !_ARPA_NAMESER_H_ */
580/*! \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. 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.
16 *
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.
28 */
29
30/*
31 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
32 * Copyright (c) 1996-1999 by Internet Software Consortium.
33 *
34 * Permission to use, copy, modify, and distribute this software for any
35 * purpose with or without fee is hereby granted, provided that the above
36 * copyright notice and this permission notice appear in all copies.
37 *
38 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
39 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
40 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
41 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
42 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
43 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
44 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
45 */
46
47/*
48 * $Id: nameser.h,v 1.7.18.2 2008/04/03 23:15:15 marka Exp $
49 * $FreeBSD: head/include/arpa/nameser.h 203965 2010-02-16 19:46:46Z imp $
50 */
51
52#ifndef _ARPA_NAMESER_H_
53#define _ARPA_NAMESER_H_
54
55/*! \file */
56
57#define BIND_4_COMPAT
58
59#include <sys/param.h>
60#include <sys/types.h>
61#include <sys/cdefs.h>
62
63/*%
64 * Revision information. This is the release date in YYYYMMDD format.
65 * It can change every day so the right thing to do with it is use it
66 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
67 * compare for equality; rather, use it to determine whether your libbind.a
68 * contains a new enough lib/nameser/ to support the feature you need.
69 */
70
71#define __NAMESER 19991006 /*%< New interface version stamp. */
72/*
73 * Define constants based on RFC0883, RFC1034, RFC 1035
74 */
75#define NS_PACKETSZ 512 /*%< default UDP packet size */
76#define NS_MAXDNAME 1025 /*%< maximum domain name */
77#define NS_MAXMSG 65535 /*%< maximum message size */
78#define NS_MAXCDNAME 255 /*%< maximum compressed domain name */
79#define NS_MAXLABEL 63 /*%< maximum length of domain label */
80#define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */
81#define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */
82#define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */
83#define NS_INT32SZ 4 /*%< #/bytes of data in a u_int32_t */
84#define NS_INT16SZ 2 /*%< #/bytes of data in a u_int16_t */
85#define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */
86#define NS_INADDRSZ 4 /*%< IPv4 T_A */
87#define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */
88#define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */
89#define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */
90/*
91 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
92 * in synch with it.
93 */
94typedef enum __ns_sect {
95 ns_s_qd = 0, /*%< Query: Question. */
96 ns_s_zn = 0, /*%< Update: Zone. */
97 ns_s_an = 1, /*%< Query: Answer. */
98 ns_s_pr = 1, /*%< Update: Prerequisites. */
99 ns_s_ns = 2, /*%< Query: Name servers. */
100 ns_s_ud = 2, /*%< Update: Update. */
101 ns_s_ar = 3, /*%< Query|Update: Additional records. */
102 ns_s_max = 4
103} ns_sect;
104
105/*%
106 * This is a message handle. It is caller allocated and has no dynamic data.
107 * This structure is intended to be opaque to all but ns_parse.c, thus the
108 * leading _'s on the member names. Use the accessor functions, not the _'s.
109 */
110typedef struct __ns_msg {
111 const u_char *_msg, *_eom;
112 u_int16_t _id, _flags, _counts[ns_s_max];
113 const u_char *_sections[ns_s_max];
114 ns_sect _sect;
115 int _rrnum;
116 const u_char *_msg_ptr;
117} ns_msg;
118
119/* Private data structure - do not use from outside library. */
120struct _ns_flagdata { int mask, shift; };
121extern struct _ns_flagdata _ns_flagdata[];
122
123/* Accessor macros - this is part of the public interface. */
124
125#define ns_msg_id(handle) ((handle)._id + 0)
126#define ns_msg_base(handle) ((handle)._msg + 0)
127#define ns_msg_end(handle) ((handle)._eom + 0)
128#define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
129#define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
130
131/*%
132 * This is a parsed record. It is caller allocated and has no dynamic data.
133 */
134typedef struct __ns_rr {
135 char name[NS_MAXDNAME];
136 u_int16_t type;
137 u_int16_t rr_class;
138 u_int32_t ttl;
139 u_int16_t rdlength;
140 const u_char * rdata;
141} ns_rr;
142
143/* Accessor macros - this is part of the public interface. */
144#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
145#define ns_rr_type(rr) ((ns_type)((rr).type + 0))
146#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
147#define ns_rr_ttl(rr) ((rr).ttl + 0)
148#define ns_rr_rdlen(rr) ((rr).rdlength + 0)
149#define ns_rr_rdata(rr) ((rr).rdata + 0)
150
151/*%
152 * These don't have to be in the same order as in the packet flags word,
153 * and they can even overlap in some cases, but they will need to be kept
154 * in synch with ns_parse.c:ns_flagdata[].
155 */
156typedef enum __ns_flag {
157 ns_f_qr, /*%< Question/Response. */
158 ns_f_opcode, /*%< Operation code. */
159 ns_f_aa, /*%< Authoritative Answer. */
160 ns_f_tc, /*%< Truncation occurred. */
161 ns_f_rd, /*%< Recursion Desired. */
162 ns_f_ra, /*%< Recursion Available. */
163 ns_f_z, /*%< MBZ. */
164 ns_f_ad, /*%< Authentic Data (DNSSEC). */
165 ns_f_cd, /*%< Checking Disabled (DNSSEC). */
166 ns_f_rcode, /*%< Response code. */
167 ns_f_max
168} ns_flag;
169
170/*%
171 * Currently defined opcodes.
172 */
173typedef enum __ns_opcode {
174 ns_o_query = 0, /*%< Standard query. */
175 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */
176 ns_o_status = 2, /*%< Name server status query (unsupported). */
177 /* Opcode 3 is undefined/reserved. */
178 ns_o_notify = 4, /*%< Zone change notification. */
179 ns_o_update = 5, /*%< Zone update message. */
180 ns_o_max = 6
181} ns_opcode;
182
183/*%
184 * Currently defined response codes.
185 */
186typedef enum __ns_rcode {
187 ns_r_noerror = 0, /*%< No error occurred. */
188 ns_r_formerr = 1, /*%< Format error. */
189 ns_r_servfail = 2, /*%< Server failure. */
190 ns_r_nxdomain = 3, /*%< Name error. */
191 ns_r_notimpl = 4, /*%< Unimplemented. */
192 ns_r_refused = 5, /*%< Operation refused. */
193 /* these are for BIND_UPDATE */
194 ns_r_yxdomain = 6, /*%< Name exists */
195 ns_r_yxrrset = 7, /*%< RRset exists */
196 ns_r_nxrrset = 8, /*%< RRset does not exist */
197 ns_r_notauth = 9, /*%< Not authoritative for zone */
198 ns_r_notzone = 10, /*%< Zone of record different from zone section */
199 ns_r_max = 11,
200 /* The following are EDNS extended rcodes */
201 ns_r_badvers = 16,
202 /* The following are TSIG errors */
203 ns_r_badsig = 16,
204 ns_r_badkey = 17,
205 ns_r_badtime = 18
206} ns_rcode;
207
208/* BIND_UPDATE */
209typedef enum __ns_update_operation {
210 ns_uop_delete = 0,
211 ns_uop_add = 1,
212 ns_uop_max = 2
213} ns_update_operation;
214
215/*%
216 * This structure is used for TSIG authenticated messages
217 */
218struct ns_tsig_key {
219 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
220 unsigned char *data;
221 int len;
222};
223typedef struct ns_tsig_key ns_tsig_key;
224
225/*%
226 * This structure is used for TSIG authenticated TCP messages
227 */
228struct ns_tcp_tsig_state {
229 int counter;
230 struct dst_key *key;
231 void *ctx;
232 unsigned char sig[NS_PACKETSZ];
233 int siglen;
234};
235typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
236
237#define NS_TSIG_FUDGE 300
238#define NS_TSIG_TCP_COUNT 100
239#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
240
241#define NS_TSIG_ERROR_NO_TSIG -10
242#define NS_TSIG_ERROR_NO_SPACE -11
243#define NS_TSIG_ERROR_FORMERR -12
244
245/*%
246 * Currently defined type values for resources and queries.
247 */
248typedef enum __ns_type {
249 ns_t_invalid = 0, /*%< Cookie. */
250 ns_t_a = 1, /*%< Host address. */
251 ns_t_ns = 2, /*%< Authoritative server. */
252 ns_t_md = 3, /*%< Mail destination. */
253 ns_t_mf = 4, /*%< Mail forwarder. */
254 ns_t_cname = 5, /*%< Canonical name. */
255 ns_t_soa = 6, /*%< Start of authority zone. */
256 ns_t_mb = 7, /*%< Mailbox domain name. */
257 ns_t_mg = 8, /*%< Mail group member. */
258 ns_t_mr = 9, /*%< Mail rename name. */
259 ns_t_null = 10, /*%< Null resource record. */
260 ns_t_wks = 11, /*%< Well known service. */
261 ns_t_ptr = 12, /*%< Domain name pointer. */
262 ns_t_hinfo = 13, /*%< Host information. */
263 ns_t_minfo = 14, /*%< Mailbox information. */
264 ns_t_mx = 15, /*%< Mail routing information. */
265 ns_t_txt = 16, /*%< Text strings. */
266 ns_t_rp = 17, /*%< Responsible person. */
267 ns_t_afsdb = 18, /*%< AFS cell database. */
268 ns_t_x25 = 19, /*%< X_25 calling address. */
269 ns_t_isdn = 20, /*%< ISDN calling address. */
270 ns_t_rt = 21, /*%< Router. */
271 ns_t_nsap = 22, /*%< NSAP address. */
272 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */
273 ns_t_sig = 24, /*%< Security signature. */
274 ns_t_key = 25, /*%< Security key. */
275 ns_t_px = 26, /*%< X.400 mail mapping. */
276 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */
277 ns_t_aaaa = 28, /*%< Ip6 Address. */
278 ns_t_loc = 29, /*%< Location Information. */
279 ns_t_nxt = 30, /*%< Next domain (security). */
280 ns_t_eid = 31, /*%< Endpoint identifier. */
281 ns_t_nimloc = 32, /*%< Nimrod Locator. */
282 ns_t_srv = 33, /*%< Server Selection. */
283 ns_t_atma = 34, /*%< ATM Address */
284 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */
285 ns_t_kx = 36, /*%< Key Exchange */
286 ns_t_cert = 37, /*%< Certification record */
287 ns_t_a6 = 38, /*%< IPv6 address (deprecates AAAA) */
288 ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */
289 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */
290 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */
291 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */
292 ns_t_tkey = 249, /*%< Transaction key */
293 ns_t_tsig = 250, /*%< Transaction signature. */
294 ns_t_ixfr = 251, /*%< Incremental zone transfer. */
295 ns_t_axfr = 252, /*%< Transfer zone of authority. */
296 ns_t_mailb = 253, /*%< Transfer mailbox records. */
297 ns_t_maila = 254, /*%< Transfer mail agent records. */
298 ns_t_any = 255, /*%< Wildcard match. */
299 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */
300 ns_t_max = 65536
301} ns_type;
302
303/* Exclusively a QTYPE? (not also an RTYPE) */
304#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
305 (t) == ns_t_mailb || (t) == ns_t_maila)
306/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
307#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
308/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
309#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
310#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
311#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
312 (t) == ns_t_zxfr)
313
314/*%
315 * Values for class field
316 */
317typedef enum __ns_class {
318 ns_c_invalid = 0, /*%< Cookie. */
319 ns_c_in = 1, /*%< Internet. */
320 ns_c_2 = 2, /*%< unallocated/unsupported. */
321 ns_c_chaos = 3, /*%< MIT Chaos-net. */
322 ns_c_hs = 4, /*%< MIT Hesiod. */
323 /* Query class values which do not appear in resource records */
324 ns_c_none = 254, /*%< for prereq. sections in update requests */
325 ns_c_any = 255, /*%< Wildcard match. */
326 ns_c_max = 65536
327} ns_class;
328
329/* DNSSEC constants. */
330
331typedef enum __ns_key_types {
332 ns_kt_rsa = 1, /*%< key type RSA/MD5 */
333 ns_kt_dh = 2, /*%< Diffie Hellman */
334 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */
335 ns_kt_private = 254 /*%< Private key type starts with OID */
336} ns_key_types;
337
338typedef enum __ns_cert_types {
339 cert_t_pkix = 1, /*%< PKIX (X.509v3) */
340 cert_t_spki = 2, /*%< SPKI */
341 cert_t_pgp = 3, /*%< PGP */
342 cert_t_url = 253, /*%< URL private type */
343 cert_t_oid = 254 /*%< OID private type */
344} ns_cert_types;
345
346/* Flags field of the KEY RR rdata. */
347#define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */
348#define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */
349#define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */
350#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */
351#define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */
352/* The type bits can also be interpreted independently, as single bits: */
353#define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */
354#define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */
355#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
356#define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */
357#define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */
358#define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */
359#define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */
360#define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */
361#define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */
362#define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */
363#define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */
364#define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */
365#define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */
366#define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */
367#define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */
368#define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */
369#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
370 NS_KEY_RESERVED4 | \
371 NS_KEY_RESERVED5 | \
372 NS_KEY_RESERVED8 | \
373 NS_KEY_RESERVED9 | \
374 NS_KEY_RESERVED10 | \
375 NS_KEY_RESERVED11 )
376#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
377/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
378#define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */
379#define NS_ALG_DH 2 /*%< Diffie Hellman KEY */
380#define NS_ALG_DSA 3 /*%< DSA KEY */
381#define NS_ALG_DSS NS_ALG_DSA
382#define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */
383#define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */
384/* Protocol values */
385/* value 0 is reserved */
386#define NS_KEY_PROT_TLS 1
387#define NS_KEY_PROT_EMAIL 2
388#define NS_KEY_PROT_DNSSEC 3
389#define NS_KEY_PROT_IPSEC 4
390#define NS_KEY_PROT_ANY 255
391
392/* Signatures */
393#define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */
394#define NS_MD5RSA_MAX_BITS 4096
395 /* Total of binary mod and exp */
396#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
397 /* Max length of text sig block */
398#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
399#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
400#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
401
402#define NS_DSA_SIG_SIZE 41
403#define NS_DSA_MIN_SIZE 213
404#define NS_DSA_MAX_BYTES 405
405
406/* Offsets into SIG record rdata to find various values */
407#define NS_SIG_TYPE 0 /*%< Type flags */
408#define NS_SIG_ALG 2 /*%< Algorithm */
409#define NS_SIG_LABELS 3 /*%< How many labels in name */
410#define NS_SIG_OTTL 4 /*%< Original TTL */
411#define NS_SIG_EXPIR 8 /*%< Expiration time */
412#define NS_SIG_SIGNED 12 /*%< Signature time */
413#define NS_SIG_FOOT 16 /*%< Key footprint */
414#define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */
415/* How RR types are represented as bit-flags in NXT records */
416#define NS_NXT_BITS 8
417#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
418#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
419#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
420#define NS_NXT_MAX 127
421
422/*%
423 * EDNS0 extended flags and option codes, host order.
424 */
425#define NS_OPT_DNSSEC_OK 0x8000U
426#define NS_OPT_NSID 3
427
428/*%
429 * Inline versions of get/put short/long. Pointer is advanced.
430 */
431#define NS_GET16(s, cp) do { \
432 register const u_char *t_cp = (const u_char *)(cp); \
433 (s) = ((u_int16_t)t_cp[0] << 8) \
434 | ((u_int16_t)t_cp[1]) \
435 ; \
436 (cp) += NS_INT16SZ; \
437} while (0)
438
439#define NS_GET32(l, cp) do { \
440 register const u_char *t_cp = (const u_char *)(cp); \
441 (l) = ((u_int32_t)t_cp[0] << 24) \
442 | ((u_int32_t)t_cp[1] << 16) \
443 | ((u_int32_t)t_cp[2] << 8) \
444 | ((u_int32_t)t_cp[3]) \
445 ; \
446 (cp) += NS_INT32SZ; \
447} while (0)
448
449#define NS_PUT16(s, cp) do { \
450 register u_int16_t t_s = (u_int16_t)(s); \
451 register u_char *t_cp = (u_char *)(cp); \
452 *t_cp++ = t_s >> 8; \
453 *t_cp = t_s; \
454 (cp) += NS_INT16SZ; \
455} while (0)
456
457#define NS_PUT32(l, cp) do { \
458 register u_int32_t t_l = (u_int32_t)(l); \
459 register u_char *t_cp = (u_char *)(cp); \
460 *t_cp++ = t_l >> 24; \
461 *t_cp++ = t_l >> 16; \
462 *t_cp++ = t_l >> 8; \
463 *t_cp = t_l; \
464 (cp) += NS_INT32SZ; \
465} while (0)
466
467/*%
468 * ANSI C identifier hiding for bind's lib/nameser.
469 */
470#define ns_msg_getflag __ns_msg_getflag
471#define ns_get16 __ns_get16
472#define ns_get32 __ns_get32
473#define ns_put16 __ns_put16
474#define ns_put32 __ns_put32
475#define ns_initparse __ns_initparse
476#define ns_skiprr __ns_skiprr
477#define ns_parserr __ns_parserr
478#define ns_sprintrr __ns_sprintrr
479#define ns_sprintrrf __ns_sprintrrf
480#define ns_format_ttl __ns_format_ttl
481#define ns_parse_ttl __ns_parse_ttl
482#if 0
483#define ns_datetosecs __ns_datetosecs
484#endif
485#define ns_name_ntol __ns_name_ntol
486#define ns_name_ntop __ns_name_ntop
487#define ns_name_pton __ns_name_pton
488#define ns_name_unpack __ns_name_unpack
489#define ns_name_pack __ns_name_pack
490#define ns_name_compress __ns_name_compress
491#define ns_name_uncompress __ns_name_uncompress
492#define ns_name_skip __ns_name_skip
493#define ns_name_rollback __ns_name_rollback
494#if 0
495#define ns_sign __ns_sign
496#define ns_sign2 __ns_sign2
497#define ns_sign_tcp __ns_sign_tcp
498#define ns_sign_tcp2 __ns_sign_tcp2
499#define ns_sign_tcp_init __ns_sign_tcp_init
500#define ns_find_tsig __ns_find_tsig
501#define ns_verify __ns_verify
502#define ns_verify_tcp __ns_verify_tcp
503#define ns_verify_tcp_init __ns_verify_tcp_init
504#endif
505#define ns_samedomain __ns_samedomain
506#if 0
507#define ns_subdomain __ns_subdomain
508#endif
509#define ns_makecanon __ns_makecanon
510#define ns_samename __ns_samename
511
512__BEGIN_DECLS
513int ns_msg_getflag(ns_msg, int);
514u_int ns_get16(const u_char *);
515u_long ns_get32(const u_char *);
516void ns_put16(u_int, u_char *);
517void ns_put32(u_long, u_char *);
518int ns_initparse(const u_char *, int, ns_msg *);
519int ns_skiprr(const u_char *, const u_char *, ns_sect, int);
520int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
521int ns_sprintrr(const ns_msg *, const ns_rr *,
522 const char *, const char *, char *, size_t);
523int ns_sprintrrf(const u_char *, size_t, const char *,
524 ns_class, ns_type, u_long, const u_char *,
525 size_t, const char *, const char *,
526 char *, size_t);
527int ns_format_ttl(u_long, char *, size_t);
528int ns_parse_ttl(const char *, u_long *);
529#if 0
530u_int32_t ns_datetosecs(const char *cp, int *errp);
531#endif
532int ns_name_ntol(const u_char *, u_char *, size_t);
533int ns_name_ntop(const u_char *, char *, size_t);
534int ns_name_pton(const char *, u_char *, size_t);
535int ns_name_unpack(const u_char *, const u_char *,
536 const u_char *, u_char *, size_t);
537int ns_name_pack(const u_char *, u_char *, int,
538 const u_char **, const u_char **);
539int ns_name_uncompress(const u_char *, const u_char *,
540 const u_char *, char *, size_t);
541int ns_name_compress(const char *, u_char *, size_t,
542 const u_char **, const u_char **);
543int ns_name_skip(const u_char **, const u_char *);
544void ns_name_rollback(const u_char *, const u_char **,
545 const u_char **);
546#if 0
547int ns_sign(u_char *, int *, int, int, void *,
548 const u_char *, int, u_char *, int *, time_t);
549int ns_sign2(u_char *, int *, int, int, void *,
550 const u_char *, int, u_char *, int *, time_t,
551 u_char **, u_char **);
552int ns_sign_tcp(u_char *, int *, int, int,
553 ns_tcp_tsig_state *, int);
554int ns_sign_tcp2(u_char *, int *, int, int,
555 ns_tcp_tsig_state *, int,
556 u_char **, u_char **);
557int ns_sign_tcp_init(void *, const u_char *, int,
558 ns_tcp_tsig_state *);
559u_char *ns_find_tsig(u_char *, u_char *);
560int ns_verify(u_char *, int *, void *,
561 const u_char *, int, u_char *, int *,
562 time_t *, int);
563int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int);
564int ns_verify_tcp_init(void *, const u_char *, int,
565 ns_tcp_tsig_state *);
566#endif
567int ns_samedomain(const char *, const char *);
568#if 0
569int ns_subdomain(const char *, const char *);
570#endif
571int ns_makecanon(const char *, char *, size_t);
572int ns_samename(const char *, const char *);
573__END_DECLS
574
575#ifdef BIND_4_COMPAT
576#include <arpa/nameser_compat.h>
577#endif
578
579#endif /* !_ARPA_NAMESER_H_ */
580/*! \file */