1/* $NetBSD: nameser.h,v 1.25 2009/04/12 17:07:34 christos 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#if (!defined(BSD)) || (BSD < 199306)
60# include <sys/bitypes.h>
61#else
62# include <sys/types.h>
63#endif
64#include <sys/cdefs.h>
65
66/*%
67 * Revision information. This is the release date in YYYYMMDD format.
68 * It can change every day so the right thing to do with it is use it
69 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
70 * compare for equality; rather, use it to determine whether your libbind.a
71 * contains a new enough lib/nameser/ to support the feature you need.
72 */
73
74#define __NAMESER 20090302 /*%< New interface version stamp. */
75/*
76 * Define constants based on RFC0883, RFC1034, RFC 1035
77 */
78#define NS_PACKETSZ 512 /*%< default UDP packet size */
79#define NS_MAXDNAME 1025 /*%< maximum domain name (presentation format)*/
80#define NS_MAXMSG 65535 /*%< maximum message size */
81#define NS_MAXCDNAME 255 /*%< maximum compressed domain name */
82#define NS_MAXLABEL 63 /*%< maximum length of domain label */
83#define NS_MAXLABELS 128 /*%< theoretical max #/labels per domain name */
84#define NS_MAXNNAME 256 /*%< maximum uncompressed (binary) domain name*/
85#define NS_MAXPADDR (sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")
86#define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */
87#define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */
88#define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */
89#define NS_INT32SZ 4 /*%< #/bytes of data in a uint32_t */
90#define NS_INT16SZ 2 /*%< #/bytes of data in a uint16_t */
91#define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */
92#define NS_INADDRSZ 4 /*%< IPv4 T_A */
93#define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */
94#define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */
95#define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */
96
97/*
98 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
99 * in synch with it.
100 */
101typedef enum __ns_sect {
102 ns_s_qd = 0, /*%< Query: Question. */
103 ns_s_zn = 0, /*%< Update: Zone. */
104 ns_s_an = 1, /*%< Query: Answer. */
105 ns_s_pr = 1, /*%< Update: Prerequisites. */
106 ns_s_ns = 2, /*%< Query: Name servers. */
107 ns_s_ud = 2, /*%< Update: Update. */
108 ns_s_ar = 3, /*%< Query|Update: Additional records. */
109 ns_s_max = 4
110} ns_sect;
111
112/*%
113 * Network name (compressed or not) type. Equivilent to a pointer when used
114 * in a function prototype. Can be const'd.
115 */
116typedef u_char ns_nname[NS_MAXNNAME];
117typedef const u_char *ns_nname_ct;
118typedef u_char *ns_nname_t;
119
120struct ns_namemap { ns_nname_ct base; int len; };
121typedef struct ns_namemap *ns_namemap_t;
122typedef const struct ns_namemap *ns_namemap_ct;
123
124/*%
125 * This is a message handle. It is caller allocated and has no dynamic data.
126 * This structure is intended to be opaque to all but ns_parse.c, thus the
127 * leading _'s on the member names. Use the accessor functions, not the _'s.
128 */
129typedef struct __ns_msg {
130 const u_char *_msg, *_eom;
131 uint16_t _id, _flags, _counts[ns_s_max];
132 const u_char *_sections[ns_s_max];
133 ns_sect _sect;
134 int _rrnum;
135 const u_char *_msg_ptr;
136} ns_msg;
137
138/*
139 * This is a newmsg handle, used when constructing new messages with
140 * ns_newmsg_init, et al.
141 */
142struct ns_newmsg {
143 ns_msg msg;
144 const u_char *dnptrs[25];
145 const u_char **lastdnptr;
146};
147typedef struct ns_newmsg ns_newmsg;
148
149/* Private data structure - do not use from outside library. */
150struct _ns_flagdata { int mask, shift; };
151extern struct _ns_flagdata _ns_flagdata[];
152
153/* Accessor macros - this is part of the public interface. */
154
155#define ns_msg_id(handle) ((handle)._id + 0)
156#define ns_msg_base(handle) ((handle)._msg + 0)
157#define ns_msg_end(handle) ((handle)._eom + 0)
158#define ns_msg_size(handle) ((size_t)((handle)._eom - (handle)._msg))
159#define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
160
161/*%
162 * This is a parsed record. It is caller allocated and has no dynamic data.
163 */
164typedef struct __ns_rr {
165 char name[NS_MAXDNAME];
166 uint16_t type;
167 uint16_t rr_class;
168 uint32_t ttl;
169 uint16_t rdlength;
170 const u_char * rdata;
171} ns_rr;
172
173/*
174 * Same thing, but using uncompressed network binary names, and real C types.
175 */
176typedef struct __ns_rr2 {
177 ns_nname nname;
178 size_t nnamel;
179 int type;
180 int rr_class;
181 u_int ttl;
182 int rdlength;
183 const u_char * rdata;
184} ns_rr2;
185
186/* Accessor macros - this is part of the public interface. */
187#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
188#define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname)
189#define ns_rr_nnamel(rr) ((rr).nnamel + 0)
190#define ns_rr_type(rr) ((ns_type)((rr).type + 0))
191#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
192#define ns_rr_ttl(rr) ((u_long)(rr).ttl + 0)
193#define ns_rr_rdlen(rr) ((size_t)(rr).rdlength + 0)
194#define ns_rr_rdata(rr) ((rr).rdata + 0)
195
196/*%
197 * These don't have to be in the same order as in the packet flags word,
198 * and they can even overlap in some cases, but they will need to be kept
199 * in synch with ns_parse.c:ns_flagdata[].
200 */
201typedef enum __ns_flag {
202 ns_f_qr, /*%< Question/Response. */
203 ns_f_opcode, /*%< Operation code. */
204 ns_f_aa, /*%< Authoritative Answer. */
205 ns_f_tc, /*%< Truncation occurred. */
206 ns_f_rd, /*%< Recursion Desired. */
207 ns_f_ra, /*%< Recursion Available. */
208 ns_f_z, /*%< MBZ. */
209 ns_f_ad, /*%< Authentic Data (DNSSEC). */
210 ns_f_cd, /*%< Checking Disabled (DNSSEC). */
211 ns_f_rcode, /*%< Response code. */
212 ns_f_max
213} ns_flag;
214
215/*%
216 * Currently defined opcodes.
217 */
218typedef enum __ns_opcode {
219 ns_o_query = 0, /*%< Standard query. */
220 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */
221 ns_o_status = 2, /*%< Name server status query (unsupported). */
222 /* Opcode 3 is undefined/reserved. */
223 ns_o_notify = 4, /*%< Zone change notification. */
224 ns_o_update = 5, /*%< Zone update message. */
225 ns_o_max = 6
226} ns_opcode;
227
228/*%
229 * Currently defined response codes.
230 */
231typedef enum __ns_rcode {
232 ns_r_noerror = 0, /*%< No error occurred. */
233 ns_r_formerr = 1, /*%< Format error. */
234 ns_r_servfail = 2, /*%< Server failure. */
235 ns_r_nxdomain = 3, /*%< Name error. */
236 ns_r_notimpl = 4, /*%< Unimplemented. */
237 ns_r_refused = 5, /*%< Operation refused. */
238 /* these are for BIND_UPDATE */
239 ns_r_yxdomain = 6, /*%< Name exists */
240 ns_r_yxrrset = 7, /*%< RRset exists */
241 ns_r_nxrrset = 8, /*%< RRset does not exist */
242 ns_r_notauth = 9, /*%< Not authoritative for zone */
243 ns_r_notzone = 10, /*%< Zone of record different from zone section */
244 ns_r_max = 11,
245 /* The following are EDNS extended rcodes */
246 ns_r_badvers = 16,
247 /* The following are TSIG errors */
248 ns_r_badsig = 16,
249 ns_r_badkey = 17,
250 ns_r_badtime = 18
251} ns_rcode;
252
253/* BIND_UPDATE */
254typedef enum __ns_update_operation {
255 ns_uop_delete = 0,
256 ns_uop_add = 1,
257 ns_uop_max = 2
258} ns_update_operation;
259
260/*%
261 * This structure is used for TSIG authenticated messages
262 */
263struct ns_tsig_key {
264 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
265 unsigned char *data;
266 int len;
267};
268typedef struct ns_tsig_key ns_tsig_key;
269
270/*%
271 * This structure is used for TSIG authenticated TCP messages
272 */
273struct ns_tcp_tsig_state {
274 int counter;
275 struct dst_key *key;
276 void *ctx;
277 unsigned char sig[NS_PACKETSZ];
278 int siglen;
279};
280typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
281
282#define NS_TSIG_FUDGE 300
283#define NS_TSIG_TCP_COUNT 100
284#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
285
286#define NS_TSIG_ERROR_NO_TSIG -10
287#define NS_TSIG_ERROR_NO_SPACE -11
288#define NS_TSIG_ERROR_FORMERR -12
289
290/*%
291 * Currently defined type values for resources and queries.
292 */
293typedef enum __ns_type {
294 ns_t_invalid = 0, /*%< Cookie. */
295 ns_t_a = 1, /*%< Host address. */
296 ns_t_ns = 2, /*%< Authoritative server. */
297 ns_t_md = 3, /*%< Mail destination. */
298 ns_t_mf = 4, /*%< Mail forwarder. */
299 ns_t_cname = 5, /*%< Canonical name. */
300 ns_t_soa = 6, /*%< Start of authority zone. */
301 ns_t_mb = 7, /*%< Mailbox domain name. */
302 ns_t_mg = 8, /*%< Mail group member. */
303 ns_t_mr = 9, /*%< Mail rename name. */
304 ns_t_null = 10, /*%< Null resource record. */
305 ns_t_wks = 11, /*%< Well known service. */
306 ns_t_ptr = 12, /*%< Domain name pointer. */
307 ns_t_hinfo = 13, /*%< Host information. */
308 ns_t_minfo = 14, /*%< Mailbox information. */
309 ns_t_mx = 15, /*%< Mail routing information. */
310 ns_t_txt = 16, /*%< Text strings. */
311 ns_t_rp = 17, /*%< Responsible person. */
312 ns_t_afsdb = 18, /*%< AFS cell database. */
313 ns_t_x25 = 19, /*%< X_25 calling address. */
314 ns_t_isdn = 20, /*%< ISDN calling address. */
315 ns_t_rt = 21, /*%< Router. */
316 ns_t_nsap = 22, /*%< NSAP address. */
317 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */
318 ns_t_sig = 24, /*%< Security signature. */
319 ns_t_key = 25, /*%< Security key. */
320 ns_t_px = 26, /*%< X.400 mail mapping. */
321 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */
322 ns_t_aaaa = 28, /*%< IPv6 Address. */
323 ns_t_loc = 29, /*%< Location Information. */
324 ns_t_nxt = 30, /*%< Next domain (security). */
325 ns_t_eid = 31, /*%< Endpoint identifier. */
326 ns_t_nimloc = 32, /*%< Nimrod Locator. */
327 ns_t_srv = 33, /*%< Server Selection. */
328 ns_t_atma = 34, /*%< ATM Address */
329 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */
330 ns_t_kx = 36, /*%< Key Exchange */
331 ns_t_cert = 37, /*%< Certification record */
332 ns_t_a6 = 38, /*%< IPv6 address (experimental) */
333 ns_t_dname = 39, /*%< Non-terminal DNAME */
334 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */
335 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */
336 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */
337 ns_t_ds = 43, /*%< Delegation Signer */
338 ns_t_sshfp = 44, /*%< SSH Fingerprint */
339 ns_t_ipseckey = 45, /*%< IPSEC Key */
340 ns_t_rrsig = 46, /*%< RRset Signature */
341 ns_t_nsec = 47, /*%< Negative security */
342 ns_t_dnskey = 48, /*%< DNS Key */
343 ns_t_dhcid = 49, /*%< Dynamic host configuratin identifier */
344 ns_t_nsec3 = 50, /*%< Negative security type 3 */
345 ns_t_nsec3param = 51, /*%< Negative security type 3 parameters */
346 ns_t_hip = 55, /*%< Host Identity Protocol */
347 ns_t_spf = 99, /*%< Sender Policy Framework */
348 ns_t_tkey = 249, /*%< Transaction key */
349 ns_t_tsig = 250, /*%< Transaction signature. */
350 ns_t_ixfr = 251, /*%< Incremental zone transfer. */
351 ns_t_axfr = 252, /*%< Transfer zone of authority. */
352 ns_t_mailb = 253, /*%< Transfer mailbox records. */
353 ns_t_maila = 254, /*%< Transfer mail agent records. */
354 ns_t_any = 255, /*%< Wildcard match. */
355 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */
356 ns_t_dlv = 32769, /*%< DNSSEC look-aside validatation. */
357 ns_t_max = 65536
358} ns_type;
359
360/* Exclusively a QTYPE? (not also an RTYPE) */
361#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
362 (t) == ns_t_mailb || (t) == ns_t_maila)
363/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
364#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
365/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
366#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
367#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
368#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
369 (t) == ns_t_zxfr)
370
371/*%
372 * Values for class field
373 */
374typedef enum __ns_class {
375 ns_c_invalid = 0, /*%< Cookie. */
376 ns_c_in = 1, /*%< Internet. */
377 ns_c_2 = 2, /*%< unallocated/unsupported. */
378 ns_c_chaos = 3, /*%< MIT Chaos-net. */
379 ns_c_hs = 4, /*%< MIT Hesiod. */
380 /* Query class values which do not appear in resource records */
381 ns_c_none = 254, /*%< for prereq. sections in update requests */
382 ns_c_any = 255, /*%< Wildcard match. */
383 ns_c_max = 65536
384} ns_class;
385
386/* DNSSEC constants. */
387
388typedef enum __ns_key_types {
389 ns_kt_rsa = 1, /*%< key type RSA/MD5 */
390 ns_kt_dh = 2, /*%< Diffie Hellman */
391 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */
392 ns_kt_private = 254 /*%< Private key type starts with OID */
393} ns_key_types;
394
395typedef enum __ns_cert_types {
396 cert_t_pkix = 1, /*%< PKIX (X.509v3) */
397 cert_t_spki = 2, /*%< SPKI */
398 cert_t_pgp = 3, /*%< PGP */
399 cert_t_url = 253, /*%< URL private type */
400 cert_t_oid = 254 /*%< OID private type */
401} ns_cert_types;
402
403/* Flags field of the KEY RR rdata. */
404#define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */
405#define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */
406#define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */
407#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */
408#define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */
409/* The type bits can also be interpreted independently, as single bits: */
410#define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */
411#define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */
412#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
413#define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */
414#define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */
415#define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */
416#define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */
417#define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */
418#define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */
419#define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */
420#define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */
421#define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */
422#define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */
423#define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */
424#define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */
425#define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */
426#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
427 NS_KEY_RESERVED4 | \
428 NS_KEY_RESERVED5 | \
429 NS_KEY_RESERVED8 | \
430 NS_KEY_RESERVED9 | \
431 NS_KEY_RESERVED10 | \
432 NS_KEY_RESERVED11 )
433#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
434
435/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
436#define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */
437#define NS_ALG_DH 2 /*%< Diffie Hellman KEY */
438#define NS_ALG_DSA 3 /*%< DSA KEY */
439#define NS_ALG_DSS NS_ALG_DSA
440#define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */
441#define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */
442
443/* Protocol values */
444/* value 0 is reserved */
445#define NS_KEY_PROT_TLS 1
446#define NS_KEY_PROT_EMAIL 2
447#define NS_KEY_PROT_DNSSEC 3
448#define NS_KEY_PROT_IPSEC 4
449#define NS_KEY_PROT_ANY 255
450
451/* Signatures */
452#define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */
453#define NS_MD5RSA_MAX_BITS 4096
454 /* Total of binary mod and exp */
455#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
456 /* Max length of text sig block */
457#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
458#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
459#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
460
461#define NS_DSA_SIG_SIZE 41
462#define NS_DSA_MIN_SIZE 213
463#define NS_DSA_MAX_BYTES 405
464
465/* Offsets into SIG record rdata to find various values */
466#define NS_SIG_TYPE 0 /*%< Type flags */
467#define NS_SIG_ALG 2 /*%< Algorithm */
468#define NS_SIG_LABELS 3 /*%< How many labels in name */
469#define NS_SIG_OTTL 4 /*%< Original TTL */
470#define NS_SIG_EXPIR 8 /*%< Expiration time */
471#define NS_SIG_SIGNED 12 /*%< Signature time */
472#define NS_SIG_FOOT 16 /*%< Key footprint */
473#define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */
474
475/* How RR types are represented as bit-flags in NXT records */
476#define NS_NXT_BITS 8
477#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
478#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
479#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
480#define NS_NXT_MAX 127
481
482/*%
483 * EDNS0 extended flags and option codes, host order.
484 */
485#define NS_OPT_DNSSEC_OK 0x8000U
486#define NS_OPT_NSID 3
487
488/*%
489 * Inline versions of get/put short/long. Pointer is advanced.
490 */
491#define NS_GET16(s, cp) do { \
492 const u_char *t_cp = (const u_char *)(cp); \
493 (s) = ((uint16_t)t_cp[0] << 8) \
494 | ((uint16_t)t_cp[1]) \
495 ; \
496 (cp) += NS_INT16SZ; \
497} while (/*CONSTCOND*/0)
498
499#define NS_GET32(l, cp) do { \
500 const u_char *t_cp = (const u_char *)(cp); \
501 (l) = ((uint32_t)t_cp[0] << 24) \
502 | ((uint32_t)t_cp[1] << 16) \
503 | ((uint32_t)t_cp[2] << 8) \
504 | ((uint32_t)t_cp[3]) \
505 ; \
506 (cp) += NS_INT32SZ; \
507} while (/*CONSTCOND*/0)
508
509#define NS_PUT16(s, cp) do { \
510 uint32_t t_s = (uint32_t)(s); \
511 u_char *t_cp = (u_char *)(cp); \
512 *t_cp++ = t_s >> 8; \
513 *t_cp = t_s; \
514 (cp) += NS_INT16SZ; \
515} while (/*CONSTCOND*/0)
516
517#define NS_PUT32(l, cp) do { \
518 uint32_t t_l = (uint32_t)(l); \
519 u_char *t_cp = (u_char *)(cp); \
520 *t_cp++ = t_l >> 24; \
521 *t_cp++ = t_l >> 16; \
522 *t_cp++ = t_l >> 8; \
523 *t_cp = t_l; \
524 (cp) += NS_INT32SZ; \
525} while (/*CONSTCOND*/0)
526
527/*%
528 * ANSI C identifier hiding for bind's lib/nameser.
529 */
530#define ns_msg_getflag __ns_msg_getflag
531#define ns_get16 __ns_get16
532#define ns_get32 __ns_get32
533#define ns_put16 __ns_put16
534#define ns_put32 __ns_put32
535#define ns_initparse __ns_initparse
536#define ns_skiprr __ns_skiprr
537#define ns_parserr __ns_parserr
538#define ns_parserr2 __ns_parserr2
539#define ns_sprintrr __ns_sprintrr
540#define ns_sprintrrf __ns_sprintrrf
541#define ns_format_ttl __ns_format_ttl
542#define ns_parse_ttl __ns_parse_ttl
543#define ns_datetosecs __ns_datetosecs
544#define ns_name_ntol __ns_name_ntol
545#define ns_name_ntop __ns_name_ntop
546#define ns_name_pton __ns_name_pton
547#define ns_name_pton2 __ns_name_pton2
548#define ns_name_unpack __ns_name_unpack
549#define ns_name_unpack2 __ns_name_unpack2
550#define ns_name_pack __ns_name_pack
551#define ns_name_compress __ns_name_compress
552#define ns_name_uncompress __ns_name_uncompress
553#define ns_name_skip __ns_name_skip
554#define ns_name_rollback __ns_name_rollback
555#define ns_name_length __ns_name_length
556#define ns_name_eq __ns_name_eq
557#define ns_name_owned __ns_name_owned
558#define ns_name_map __ns_name_map
559#define ns_name_labels __ns_name_labels
560#define ns_sign __ns_sign
561#define ns_sign2 __ns_sign2
562#define ns_sign_tcp __ns_sign_tcp
563#define ns_sign_tcp2 __ns_sign_tcp2
564#define ns_sign_tcp_init __ns_sign_tcp_init
565#define ns_find_tsig __ns_find_tsig
566#define ns_verify __ns_verify
567#define ns_verify_tcp __ns_verify_tcp
568#define ns_verify_tcp_init __ns_verify_tcp_init
569#define ns_samedomain __ns_samedomain
570#define ns_subdomain __ns_subdomain
571#define ns_makecanon __ns_makecanon
572#define ns_samename __ns_samename
573#define ns_newmsg_init __ns_newmsg_init
574#define ns_newmsg_copy __ns_newmsg_copy
575#define ns_newmsg_id __ns_newmsg_id
576#define ns_newmsg_flag __ns_newmsg_flag
577#define ns_newmsg_q __ns_newmsg_q
578#define ns_newmsg_rr __ns_newmsg_rr
579#define ns_newmsg_done __ns_newmsg_done
580#define ns_rdata_unpack __ns_rdata_unpack
581#define ns_rdata_equal __ns_rdata_equal
582#define ns_rdata_refers __ns_rdata_refers
583
584__BEGIN_DECLS
585int ns_msg_getflag(ns_msg, int);
586uint16_t ns_get16(const u_char *);
587uint32_t ns_get32(const u_char *);
588void ns_put16(uint16_t, u_char *);
589void ns_put32(uint32_t, u_char *);
590int ns_initparse(const u_char *, int, ns_msg *);
591int ns_skiprr(const u_char *, const u_char *, ns_sect, int);
592int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
593int ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *);
594int ns_sprintrr(const ns_msg *, const ns_rr *,
595 const char *, const char *, char *, size_t);
596int ns_sprintrrf(const u_char *, size_t, const char *,
597 ns_class, ns_type, u_long, const u_char *,
598 size_t, const char *, const char *,
599 char *, size_t);
600int ns_format_ttl(u_long, char *, size_t);
601int ns_parse_ttl(const char *, u_long *);
602uint32_t ns_datetosecs(const char *cp, int *errp);
603int ns_name_ntol(const u_char *, u_char *, size_t);
604int ns_name_ntop(const u_char *, char *, size_t);
605int ns_name_pton(const char *, u_char *, size_t);
606int ns_name_pton2(const char *, u_char *, size_t, size_t *);
607int ns_name_unpack(const u_char *, const u_char *,
608 const u_char *, u_char *, size_t);
609int ns_name_unpack2(const u_char *, const u_char *,
610 const u_char *, u_char *, size_t,
611 size_t *);
612int ns_name_pack(const u_char *, u_char *, int,
613 const u_char **, const u_char **);
614int ns_name_uncompress(const u_char *, const u_char *,
615 const u_char *, char *, size_t);
616int ns_name_compress(const char *, u_char *, size_t,
617 const u_char **, const u_char **);
618int ns_name_skip(const u_char **, const u_char *);
619void ns_name_rollback(const u_char *, const u_char **,
620 const u_char **);
621#ifndef __LIBC12_SOURCE__
622int ns_sign(u_char *, int *, int, int, void *,
623 const u_char *, int, u_char *, int *, time_t)
624 __RENAME(__ns_sign50);
625int ns_sign2(u_char *, int *, int, int, void *,
626 const u_char *, int, u_char *, int *, time_t,
627 u_char **, u_char **)
628 __RENAME(__ns_sign250);
629#endif
630ssize_t ns_name_length(ns_nname_ct, size_t);
631int ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t);
632int ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int);
633int ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int);
634int ns_name_labels(ns_nname_ct, size_t);
635int ns_sign_tcp(u_char *, int *, int, int,
636 ns_tcp_tsig_state *, int);
637int ns_sign_tcp2(u_char *, int *, int, int,
638 ns_tcp_tsig_state *, int,
639 u_char **, u_char **);
640int ns_sign_tcp_init(void *, const u_char *, int,
641 ns_tcp_tsig_state *);
642u_char *ns_find_tsig(u_char *, u_char *);
643#ifndef __LIBC12_SOURCE__
644int ns_verify(u_char *, int *, void *,
645 const u_char *, int, u_char *, int *,
646 time_t *, int)
647 __RENAME(__ns_verify50);
648#endif
649int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int);
650int ns_verify_tcp_init(void *, const u_char *, int,
651 ns_tcp_tsig_state *);
652int ns_samedomain(const char *, const char *);
653int ns_subdomain(const char *, const char *);
654int ns_makecanon(const char *, char *, size_t);
655int ns_samename(const char *, const char *);
656int ns_newmsg_init(u_char *buffer, size_t bufsiz, ns_newmsg *);
657int ns_newmsg_copy(ns_newmsg *, ns_msg *);
658void ns_newmsg_id(ns_newmsg *handle, uint16_t id);
659void ns_newmsg_flag(ns_newmsg *handle, ns_flag flag, u_int value);
660int ns_newmsg_q(ns_newmsg *handle, ns_nname_ct qname,
661 ns_type qtype, ns_class qclass);
662int ns_newmsg_rr(ns_newmsg *handle, ns_sect sect,
663 ns_nname_ct name, ns_type type,
664 ns_class rr_class, uint32_t ttl,
665 uint16_t rdlen, const u_char *rdata);
666size_t ns_newmsg_done(ns_newmsg *handle);
667ssize_t ns_rdata_unpack(const u_char *, const u_char *, ns_type,
668 const u_char *, size_t, u_char *, size_t);
669int ns_rdata_equal(ns_type,
670 const u_char *, size_t,
671 const u_char *, size_t);
672int ns_rdata_refers(ns_type,
673 const u_char *, size_t,
674 const u_char *);
675__END_DECLS
676
677#ifdef BIND_4_COMPAT
678#include <arpa/nameser_compat.h>
679#endif
680
681#endif /* !_ARPA_NAMESER_H_ */
682