1/* $NetBSD: nameser.h,v 1.29 2025/07/15 22:15:04 andvar Exp $ */
2
3/*
4 * Portions Copyright (C) 2004, 2005, 2008, 2009 Internet Systems Consortium, Inc. ("ISC")
5 * Portions Copyright (C) 1996-2003 Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/*
21 * Copyright (c) 1983, 1989, 1993
22 * The Regents of the University of California. All rights reserved.
23 *
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
26 * are met:
27 * 1. Redistributions of source code must retain the above copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 * 3. Neither the name of the University nor the names of its contributors
33 * may be used to endorse or promote products derived from this software
34 * without specific prior written permission.
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
37 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
39 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
40 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
41 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
42 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
44 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
45 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 */
48
49/*
50 * Id: nameser.h,v 1.16 2009/03/03 01:52:48 each Exp
51 */
52
53#ifndef _ARPA_NAMESER_H_
54#define _ARPA_NAMESER_H_
55
56#define BIND_4_COMPAT
57
58#include <sys/param.h>
59#include <sys/types.h>
60#include <sys/cdefs.h>
61
62#if !defined(_NETBSD_SOURCE)
63typedef unsigned char u_char;
64typedef unsigned short u_short;
65typedef unsigned int u_int;
66typedef unsigned long u_long;
67#endif
68
69/*%
70 * Revision information. This is the release date in YYYYMMDD format.
71 * It can change every day so the right thing to do with it is use it
72 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
73 * compare for equality; rather, use it to determine whether your libbind.a
74 * contains a new enough lib/nameser/ to support the feature you need.
75 */
76
77#define __NAMESER 20090302 /*%< New interface version stamp. */
78/*
79 * Define constants based on RFC0883, RFC1034, RFC 1035
80 */
81#define NS_PACKETSZ 512 /*%< default UDP packet size */
82#define NS_MAXDNAME 1025 /*%< maximum domain name (presentation format)*/
83#define NS_MAXMSG 65535 /*%< maximum message size */
84#define NS_MAXCDNAME 255 /*%< maximum compressed domain name */
85#define NS_MAXLABEL 63 /*%< maximum length of domain label */
86#define NS_MAXLABELS 128 /*%< theoretical max #/labels per domain name */
87#define NS_MAXNNAME 256 /*%< maximum uncompressed (binary) domain name*/
88#define NS_MAXPADDR (sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")
89#define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */
90#define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */
91#define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */
92#define NS_INT32SZ 4 /*%< #/bytes of data in a uint32_t */
93#define NS_INT16SZ 2 /*%< #/bytes of data in a uint16_t */
94#define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */
95#define NS_INADDRSZ 4 /*%< IPv4 T_A */
96#define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */
97#define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */
98#define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */
99
100/*
101 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
102 * in synch with it.
103 */
104typedef enum __ns_sect {
105 ns_s_qd = 0, /*%< Query: Question. */
106 ns_s_zn = 0, /*%< Update: Zone. */
107 ns_s_an = 1, /*%< Query: Answer. */
108 ns_s_pr = 1, /*%< Update: Prerequisites. */
109 ns_s_ns = 2, /*%< Query: Name servers. */
110 ns_s_ud = 2, /*%< Update: Update. */
111 ns_s_ar = 3, /*%< Query|Update: Additional records. */
112 ns_s_max = 4
113} ns_sect;
114
115/*%
116 * Network name (compressed or not) type. Equivalent to a pointer when used
117 * in a function prototype. Can be const'd.
118 */
119typedef u_char ns_nname[NS_MAXNNAME];
120typedef const u_char *ns_nname_ct;
121typedef u_char *ns_nname_t;
122
123struct ns_namemap { ns_nname_ct base; int len; };
124typedef struct ns_namemap *ns_namemap_t;
125typedef const struct ns_namemap *ns_namemap_ct;
126
127/*%
128 * This is a message handle. It is caller allocated and has no dynamic data.
129 * This structure is intended to be opaque to all but ns_parse.c, thus the
130 * leading _'s on the member names. Use the accessor functions, not the _'s.
131 */
132typedef struct __ns_msg {
133 const u_char *_msg, *_eom;
134 uint16_t _id, _flags, _counts[ns_s_max];
135 const u_char *_sections[ns_s_max];
136 ns_sect _sect;
137 int _rrnum;
138 const u_char *_msg_ptr;
139} ns_msg;
140
141/*
142 * This is a newmsg handle, used when constructing new messages with
143 * ns_newmsg_init, et al.
144 */
145struct ns_newmsg {
146 ns_msg msg;
147 const u_char *dnptrs[25];
148 const u_char **lastdnptr;
149};
150typedef struct ns_newmsg ns_newmsg;
151
152/* Private data structure - do not use from outside library. */
153struct _ns_flagdata { int mask, shift; };
154extern struct _ns_flagdata _ns_flagdata[];
155
156/* Accessor macros - this is part of the public interface. */
157
158#define ns_msg_id(handle) ((handle)._id + 0)
159#define ns_msg_base(handle) ((handle)._msg + 0)
160#define ns_msg_end(handle) ((handle)._eom + 0)
161#define ns_msg_size(handle) ((size_t)((handle)._eom - (handle)._msg))
162#define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
163
164/*%
165 * This is a parsed record. It is caller allocated and has no dynamic data.
166 */
167typedef struct __ns_rr {
168 char name[NS_MAXDNAME];
169 uint16_t type;
170 uint16_t rr_class;
171 uint32_t ttl;
172 uint16_t rdlength;
173 const u_char * rdata;
174} ns_rr;
175
176/*
177 * Same thing, but using uncompressed network binary names, and real C types.
178 */
179typedef struct __ns_rr2 {
180 ns_nname nname;
181 size_t nnamel;
182 int type;
183 int rr_class;
184 u_int ttl;
185 int rdlength;
186 const u_char * rdata;
187} ns_rr2;
188
189/* Accessor macros - this is part of the public interface. */
190#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
191#define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname)
192#define ns_rr_nnamel(rr) ((rr).nnamel + 0)
193#define ns_rr_type(rr) ((ns_type)((rr).type + 0))
194#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
195#define ns_rr_ttl(rr) ((u_long)(rr).ttl + 0)
196#define ns_rr_rdlen(rr) ((size_t)(rr).rdlength + 0)
197#define ns_rr_rdata(rr) ((rr).rdata + 0)
198
199/*%
200 * These don't have to be in the same order as in the packet flags word,
201 * and they can even overlap in some cases, but they will need to be kept
202 * in synch with ns_parse.c:ns_flagdata[].
203 */
204typedef enum __ns_flag {
205 ns_f_qr, /*%< Question/Response. */
206 ns_f_opcode, /*%< Operation code. */
207 ns_f_aa, /*%< Authoritative Answer. */
208 ns_f_tc, /*%< Truncation occurred. */
209 ns_f_rd, /*%< Recursion Desired. */
210 ns_f_ra, /*%< Recursion Available. */
211 ns_f_z, /*%< MBZ. */
212 ns_f_ad, /*%< Authentic Data (DNSSEC). */
213 ns_f_cd, /*%< Checking Disabled (DNSSEC). */
214 ns_f_rcode, /*%< Response code. */
215 ns_f_max
216} ns_flag;
217
218/*%
219 * Currently defined opcodes.
220 */
221typedef enum __ns_opcode {
222 ns_o_query = 0, /*%< Standard query. */
223 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */
224 ns_o_status = 2, /*%< Name server status query (unsupported). */
225 /* Opcode 3 is undefined/reserved. */
226 ns_o_notify = 4, /*%< Zone change notification. */
227 ns_o_update = 5, /*%< Zone update message. */
228 ns_o_max = 6
229} ns_opcode;
230
231/*%
232 * Currently defined response codes.
233 */
234typedef enum __ns_rcode {
235 ns_r_noerror = 0, /*%< No error occurred. */
236 ns_r_formerr = 1, /*%< Format error. */
237 ns_r_servfail = 2, /*%< Server failure. */
238 ns_r_nxdomain = 3, /*%< Name error. */
239 ns_r_notimpl = 4, /*%< Unimplemented. */
240 ns_r_refused = 5, /*%< Operation refused. */
241 /* these are for BIND_UPDATE */
242 ns_r_yxdomain = 6, /*%< Name exists */
243 ns_r_yxrrset = 7, /*%< RRset exists */
244 ns_r_nxrrset = 8, /*%< RRset does not exist */
245 ns_r_notauth = 9, /*%< Not authoritative for zone */
246 ns_r_notzone = 10, /*%< Zone of record different from zone section */
247 ns_r_max = 11,
248 /* The following are EDNS extended rcodes */
249 ns_r_badvers = 16,
250 /* The following are TSIG errors */
251 ns_r_badsig = 16,
252 ns_r_badkey = 17,
253 ns_r_badtime = 18
254} ns_rcode;
255
256/* BIND_UPDATE */
257typedef enum __ns_update_operation {
258 ns_uop_delete = 0,
259 ns_uop_add = 1,
260 ns_uop_max = 2
261} ns_update_operation;
262
263/*%
264 * This structure is used for TSIG authenticated messages
265 */
266struct ns_tsig_key {
267 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
268 unsigned char *data;
269 int len;
270};
271typedef struct ns_tsig_key ns_tsig_key;
272
273/*%
274 * This structure is used for TSIG authenticated TCP messages
275 */
276struct ns_tcp_tsig_state {
277 int counter;
278 struct dst_key *key;
279 void *ctx;
280 unsigned char sig[NS_PACKETSZ];
281 int siglen;
282};
283typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
284
285#define NS_TSIG_FUDGE 300
286#define NS_TSIG_TCP_COUNT 100
287#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
288
289#define NS_TSIG_ERROR_NO_TSIG -10
290#define NS_TSIG_ERROR_NO_SPACE -11
291#define NS_TSIG_ERROR_FORMERR -12
292
293/*%
294 * Currently defined type values for resources and queries.
295 */
296typedef enum __ns_type {
297 ns_t_invalid = 0, /*%< Cookie. */
298 ns_t_a = 1, /*%< Host address. */
299 ns_t_ns = 2, /*%< Authoritative server. */
300 ns_t_md = 3, /*%< Mail destination. */
301 ns_t_mf = 4, /*%< Mail forwarder. */
302 ns_t_cname = 5, /*%< Canonical name. */
303 ns_t_soa = 6, /*%< Start of authority zone. */
304 ns_t_mb = 7, /*%< Mailbox domain name. */
305 ns_t_mg = 8, /*%< Mail group member. */
306 ns_t_mr = 9, /*%< Mail rename name. */
307 ns_t_null = 10, /*%< Null resource record. */
308 ns_t_wks = 11, /*%< Well known service. */
309 ns_t_ptr = 12, /*%< Domain name pointer. */
310 ns_t_hinfo = 13, /*%< Host information. */
311 ns_t_minfo = 14, /*%< Mailbox information. */
312 ns_t_mx = 15, /*%< Mail routing information. */
313 ns_t_txt = 16, /*%< Text strings. */
314 ns_t_rp = 17, /*%< Responsible person. */
315 ns_t_afsdb = 18, /*%< AFS cell database. */
316 ns_t_x25 = 19, /*%< X_25 calling address. */
317 ns_t_isdn = 20, /*%< ISDN calling address. */
318 ns_t_rt = 21, /*%< Router. */
319 ns_t_nsap = 22, /*%< NSAP address. */
320 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */
321 ns_t_sig = 24, /*%< Security signature. */
322 ns_t_key = 25, /*%< Security key. */
323 ns_t_px = 26, /*%< X.400 mail mapping. */
324 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */
325 ns_t_aaaa = 28, /*%< IPv6 Address. */
326 ns_t_loc = 29, /*%< Location Information. */
327 ns_t_nxt = 30, /*%< Next domain (security). */
328 ns_t_eid = 31, /*%< Endpoint identifier. */
329 ns_t_nimloc = 32, /*%< Nimrod Locator. */
330 ns_t_srv = 33, /*%< Server Selection. */
331 ns_t_atma = 34, /*%< ATM Address */
332 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */
333 ns_t_kx = 36, /*%< Key Exchange */
334 ns_t_cert = 37, /*%< Certification record */
335 ns_t_a6 = 38, /*%< IPv6 address (experimental) */
336 ns_t_dname = 39, /*%< Non-terminal DNAME */
337 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */
338 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */
339 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */
340 ns_t_ds = 43, /*%< Delegation Signer */
341 ns_t_sshfp = 44, /*%< SSH Fingerprint */
342 ns_t_ipseckey = 45, /*%< IPSEC Key */
343 ns_t_rrsig = 46, /*%< RRset Signature */
344 ns_t_nsec = 47, /*%< Negative security */
345 ns_t_dnskey = 48, /*%< DNS Key */
346 ns_t_dhcid = 49, /*%< Dynamic host configuration identifier */
347 ns_t_nsec3 = 50, /*%< Negative security type 3 */
348 ns_t_nsec3param = 51, /*%< Negative security type 3 parameters */
349 ns_t_hip = 55, /*%< Host Identity Protocol */
350 ns_t_spf = 99, /*%< Sender Policy Framework */
351 ns_t_tkey = 249, /*%< Transaction key */
352 ns_t_tsig = 250, /*%< Transaction signature. */
353 ns_t_ixfr = 251, /*%< Incremental zone transfer. */
354 ns_t_axfr = 252, /*%< Transfer zone of authority. */
355 ns_t_mailb = 253, /*%< Transfer mailbox records. */
356 ns_t_maila = 254, /*%< Transfer mail agent records. */
357 ns_t_any = 255, /*%< Wildcard match. */
358 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */
359 ns_t_dlv = 32769, /*%< DNSSEC look-aside validation. */
360 ns_t_max = 65536
361} ns_type;
362
363/* Exclusively a QTYPE? (not also an RTYPE) */
364#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
365 (t) == ns_t_mailb || (t) == ns_t_maila)
366/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
367#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
368/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
369#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
370#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
371#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
372 (t) == ns_t_zxfr)
373
374/*%
375 * Values for class field
376 */
377typedef enum __ns_class {
378 ns_c_invalid = 0, /*%< Cookie. */
379 ns_c_in = 1, /*%< Internet. */
380 ns_c_2 = 2, /*%< unallocated/unsupported. */
381 ns_c_chaos = 3, /*%< MIT Chaos-net. */
382 ns_c_hs = 4, /*%< MIT Hesiod. */
383 /* Query class values which do not appear in resource records */
384 ns_c_none = 254, /*%< for prereq. sections in update requests */
385 ns_c_any = 255, /*%< Wildcard match. */
386 ns_c_max = 65536
387} ns_class;
388
389/* DNSSEC constants. */
390
391typedef enum __ns_key_types {
392 ns_kt_rsa = 1, /*%< key type RSA/MD5 */
393 ns_kt_dh = 2, /*%< Diffie Hellman */
394 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */
395 ns_kt_private = 254 /*%< Private key type starts with OID */
396} ns_key_types;
397
398typedef enum __ns_cert_types {
399 cert_t_pkix = 1, /*%< PKIX (X.509v3) */
400 cert_t_spki = 2, /*%< SPKI */
401 cert_t_pgp = 3, /*%< PGP */
402 cert_t_url = 253, /*%< URL private type */
403 cert_t_oid = 254 /*%< OID private type */
404} ns_cert_types;
405
406/* Flags field of the KEY RR rdata. */
407#define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */
408#define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */
409#define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */
410#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */
411#define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */
412/* The type bits can also be interpreted independently, as single bits: */
413#define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */
414#define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */
415#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
416#define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */
417#define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */
418#define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */
419#define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */
420#define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */
421#define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */
422#define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */
423#define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */
424#define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */
425#define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */
426#define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */
427#define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */
428#define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */
429#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
430 NS_KEY_RESERVED4 | \
431 NS_KEY_RESERVED5 | \
432 NS_KEY_RESERVED8 | \
433 NS_KEY_RESERVED9 | \
434 NS_KEY_RESERVED10 | \
435 NS_KEY_RESERVED11 )
436#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
437
438/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
439#define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */
440#define NS_ALG_DH 2 /*%< Diffie Hellman KEY */
441#define NS_ALG_DSA 3 /*%< DSA KEY */
442#define NS_ALG_DSS NS_ALG_DSA
443#define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */
444#define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */
445
446/* Protocol values */
447/* value 0 is reserved */
448#define NS_KEY_PROT_TLS 1
449#define NS_KEY_PROT_EMAIL 2
450#define NS_KEY_PROT_DNSSEC 3
451#define NS_KEY_PROT_IPSEC 4
452#define NS_KEY_PROT_ANY 255
453
454/* Signatures */
455#define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */
456#define NS_MD5RSA_MAX_BITS 4096
457 /* Total of binary mod and exp */
458#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
459 /* Max length of text sig block */
460#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
461#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
462#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
463
464#define NS_DSA_SIG_SIZE 41
465#define NS_DSA_MIN_SIZE 213
466#define NS_DSA_MAX_BYTES 405
467
468/* Offsets into SIG record rdata to find various values */
469#define NS_SIG_TYPE 0 /*%< Type flags */
470#define NS_SIG_ALG 2 /*%< Algorithm */
471#define NS_SIG_LABELS 3 /*%< How many labels in name */
472#define NS_SIG_OTTL 4 /*%< Original TTL */
473#define NS_SIG_EXPIR 8 /*%< Expiration time */
474#define NS_SIG_SIGNED 12 /*%< Signature time */
475#define NS_SIG_FOOT 16 /*%< Key footprint */
476#define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */
477
478/* How RR types are represented as bit-flags in NXT records */
479#define NS_NXT_BITS 8
480#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
481#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
482#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
483#define NS_NXT_MAX 127
484
485/*%
486 * EDNS0 extended flags and option codes, host order.
487 */
488#define NS_OPT_DNSSEC_OK 0x8000U
489#define NS_OPT_NSID 3
490
491/*%
492 * Inline versions of get/put short/long. Pointer is advanced.
493 */
494#define NS_GET16(s, cp) do { \
495 const u_char *t_cp = (const u_char *)(cp); \
496 (s) = ((uint16_t)t_cp[0] << 8) \
497 | ((uint16_t)t_cp[1]) \
498 ; \
499 (cp) += NS_INT16SZ; \
500} while (/*CONSTCOND*/0)
501
502#define NS_GET32(l, cp) do { \
503 const u_char *t_cp = (const u_char *)(cp); \
504 (l) = ((uint32_t)t_cp[0] << 24) \
505 | ((uint32_t)t_cp[1] << 16) \
506 | ((uint32_t)t_cp[2] << 8) \
507 | ((uint32_t)t_cp[3]) \
508 ; \
509 (cp) += NS_INT32SZ; \
510} while (/*CONSTCOND*/0)
511
512#define NS_PUT16(s, cp) do { \
513 uint32_t t_s = (uint32_t)(s); \
514 u_char *t_cp = (u_char *)(cp); \
515 *t_cp++ = t_s >> 8; \
516 *t_cp = t_s; \
517 (cp) += NS_INT16SZ; \
518} while (/*CONSTCOND*/0)
519
520#define NS_PUT32(l, cp) do { \
521 uint32_t t_l = (uint32_t)(l); \
522 u_char *t_cp = (u_char *)(cp); \
523 *t_cp++ = t_l >> 24; \
524 *t_cp++ = t_l >> 16; \
525 *t_cp++ = t_l >> 8; \
526 *t_cp = t_l; \
527 (cp) += NS_INT32SZ; \
528} while (/*CONSTCOND*/0)
529
530/*%
531 * ANSI C identifier hiding for bind's lib/nameser.
532 */
533#define ns_msg_getflag __ns_msg_getflag
534#define ns_get16 __ns_get16
535#define ns_get32 __ns_get32
536#define ns_put16 __ns_put16
537#define ns_put32 __ns_put32
538#define ns_initparse __ns_initparse
539#define ns_skiprr __ns_skiprr
540#define ns_parserr __ns_parserr
541#define ns_parserr2 __ns_parserr2
542#define ns_sprintrr __ns_sprintrr
543#define ns_sprintrrf __ns_sprintrrf
544#define ns_format_ttl __ns_format_ttl
545#define ns_parse_ttl __ns_parse_ttl
546#define ns_datetosecs __ns_datetosecs
547#define ns_name_ntol __ns_name_ntol
548#define ns_name_ntop __ns_name_ntop
549#define ns_name_pton __ns_name_pton
550#define ns_name_pton2 __ns_name_pton2
551#define ns_name_unpack __ns_name_unpack
552#define ns_name_unpack2 __ns_name_unpack2
553#define ns_name_pack __ns_name_pack
554#define ns_name_compress __ns_name_compress
555#define ns_name_uncompress __ns_name_uncompress
556#define ns_name_skip __ns_name_skip
557#define ns_name_rollback __ns_name_rollback
558#define ns_name_length __ns_name_length
559#define ns_name_eq __ns_name_eq
560#define ns_name_owned __ns_name_owned
561#define ns_name_map __ns_name_map
562#define ns_name_labels __ns_name_labels
563#define ns_sign __ns_sign
564#define ns_sign2 __ns_sign2
565#define ns_sign_tcp __ns_sign_tcp
566#define ns_sign_tcp2 __ns_sign_tcp2
567#define ns_sign_tcp_init __ns_sign_tcp_init
568#define ns_find_tsig __ns_find_tsig
569#define ns_verify __ns_verify
570#define ns_verify_tcp __ns_verify_tcp
571#define ns_verify_tcp_init __ns_verify_tcp_init
572#define ns_samedomain __ns_samedomain
573#define ns_subdomain __ns_subdomain
574#define ns_makecanon __ns_makecanon
575#define ns_samename __ns_samename
576#define ns_newmsg_init __ns_newmsg_init
577#define ns_newmsg_copy __ns_newmsg_copy
578#define ns_newmsg_id __ns_newmsg_id
579#define ns_newmsg_flag __ns_newmsg_flag
580#define ns_newmsg_q __ns_newmsg_q
581#define ns_newmsg_rr __ns_newmsg_rr
582#define ns_newmsg_done __ns_newmsg_done
583#define ns_rdata_unpack __ns_rdata_unpack
584#define ns_rdata_equal __ns_rdata_equal
585#define ns_rdata_refers __ns_rdata_refers
586
587__BEGIN_DECLS
588int ns_msg_getflag(ns_msg, int);
589uint16_t ns_get16(const u_char *);
590uint32_t ns_get32(const u_char *);
591void ns_put16(uint16_t, u_char *);
592void ns_put32(uint32_t, u_char *);
593int ns_initparse(const u_char *, int, ns_msg *);
594int ns_skiprr(const u_char *, const u_char *, ns_sect, int);
595int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
596int ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *);
597int ns_sprintrr(const ns_msg *, const ns_rr *,
598 const char *, const char *, char *, size_t);
599int ns_sprintrrf(const u_char *, size_t, const char *,
600 ns_class, ns_type, u_long, const u_char *,
601 size_t, const char *, const char *,
602 char *, size_t);
603int ns_format_ttl(u_long, char *, size_t);
604int ns_parse_ttl(const char *, u_long *);
605uint32_t ns_datetosecs(const char *cp, int *errp);
606int ns_name_ntol(const u_char *, u_char *, size_t);
607int ns_name_ntop(const u_char *, char *, size_t);
608int ns_name_pton(const char *, u_char *, size_t);
609int ns_name_pton2(const char *, u_char *, size_t, size_t *);
610int ns_name_unpack(const u_char *, const u_char *,
611 const u_char *, u_char *, size_t);
612int ns_name_unpack2(const u_char *, const u_char *,
613 const u_char *, u_char *, size_t,
614 size_t *);
615int ns_name_pack(const u_char *, u_char *, int,
616 const u_char **, const u_char **);
617int ns_name_uncompress(const u_char *, const u_char *,
618 const u_char *, char *, size_t);
619int ns_name_compress(const char *, u_char *, size_t,
620 const u_char **, const u_char **);
621int ns_name_skip(const u_char **, const u_char *);
622void ns_name_rollback(const u_char *, const u_char **,
623 const u_char **);
624#ifndef __LIBC12_SOURCE__
625int ns_sign(u_char *, int *, int, int, void *,
626 const u_char *, int, u_char *, int *, time_t)
627 __RENAME(__ns_sign50);
628int ns_sign2(u_char *, int *, int, int, void *,
629 const u_char *, int, u_char *, int *, time_t,
630 u_char **, u_char **)
631 __RENAME(__ns_sign250);
632#endif
633ssize_t ns_name_length(ns_nname_ct, size_t);
634int ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t);
635int ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int);
636int ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int);
637int ns_name_labels(ns_nname_ct, size_t);
638int ns_sign_tcp(u_char *, int *, int, int,
639 ns_tcp_tsig_state *, int);
640int ns_sign_tcp2(u_char *, int *, int, int,
641 ns_tcp_tsig_state *, int,
642 u_char **, u_char **);
643int ns_sign_tcp_init(void *, const u_char *, int,
644 ns_tcp_tsig_state *);
645u_char *ns_find_tsig(u_char *, u_char *);
646#ifndef __LIBC12_SOURCE__
647int ns_verify(u_char *, int *, void *,
648 const u_char *, int, u_char *, int *,
649 time_t *, int)
650 __RENAME(__ns_verify50);
651#endif
652int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int);
653int ns_verify_tcp_init(void *, const u_char *, int,
654 ns_tcp_tsig_state *);
655int ns_samedomain(const char *, const char *);
656int ns_subdomain(const char *, const char *);
657int ns_makecanon(const char *, char *, size_t);
658int ns_samename(const char *, const char *);
659int ns_newmsg_init(u_char *buffer, size_t bufsiz, ns_newmsg *);
660int ns_newmsg_copy(ns_newmsg *, ns_msg *);
661void ns_newmsg_id(ns_newmsg *handle, uint16_t id);
662void ns_newmsg_flag(ns_newmsg *handle, ns_flag flag, u_int value);
663int ns_newmsg_q(ns_newmsg *handle, ns_nname_ct qname,
664 ns_type qtype, ns_class qclass);
665int ns_newmsg_rr(ns_newmsg *handle, ns_sect sect,
666 ns_nname_ct name, ns_type type,
667 ns_class rr_class, uint32_t ttl,
668 uint16_t rdlen, const u_char *rdata);
669size_t ns_newmsg_done(ns_newmsg *handle);
670ssize_t ns_rdata_unpack(const u_char *, const u_char *, ns_type,
671 const u_char *, size_t, u_char *, size_t);
672int ns_rdata_equal(ns_type,
673 const u_char *, size_t,
674 const u_char *, size_t);
675int ns_rdata_refers(ns_type,
676 const u_char *, size_t,
677 const u_char *);
678__END_DECLS
679
680#ifdef BIND_4_COMPAT
681#include <arpa/nameser_compat.h>
682#endif
683
684#endif /* !_ARPA_NAMESER_H_ */