2 * Copyright (c) 1983, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
36 * Copyright (c) 1996-1999 by Internet Software Consortium.
38 * Permission to use, copy, modify, and distribute this software for any
39 * purpose with or without fee is hereby granted, provided that the above
40 * copyright notice and this permission notice appear in all copies.
42 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
43 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
44 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
45 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
46 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
47 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
48 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
52 * $Id: nameser.h,v 1.2.2.4.4.1 2004/03/09 08:33:30 marka Exp $
56 #ifndef _ARPA_NAMESER_H_
57 #define _ARPA_NAMESER_H_
61 #include <sys/param.h>
62 #include <sys/types.h>
63 #include <sys/cdefs.h>
66 * Revision information. This is the release date in YYYYMMDD format.
67 * It can change every day so the right thing to do with it is use it
68 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not
69 * compare for equality; rather, use it to determine whether your libbind.a
70 * contains a new enough lib/nameser/ to support the feature you need.
73 #define __NAMESER 19991006 /* New interface version stamp. */
76 * Define constants based on RFC 883, RFC 1034, RFC 1035
78 #define NS_PACKETSZ 512 /* default UDP packet size */
79 #define NS_MAXDNAME 1025 /* maximum domain name */
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_HFIXEDSZ 12 /* #/bytes of fixed data in header */
84 #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */
85 #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */
86 #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */
87 #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */
88 #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */
89 #define NS_INADDRSZ 4 /* IPv4 T_A */
90 #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */
91 #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */
92 #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */
95 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
98 typedef enum __ns_sect {
99 ns_s_qd = 0, /* Query: Question. */
100 ns_s_zn = 0, /* Update: Zone. */
101 ns_s_an = 1, /* Query: Answer. */
102 ns_s_pr = 1, /* Update: Prerequisites. */
103 ns_s_ns = 2, /* Query: Name servers. */
104 ns_s_ud = 2, /* Update: Update. */
105 ns_s_ar = 3, /* Query|Update: Additional records. */
110 * This is a message handle. It is caller allocated and has no dynamic data.
111 * This structure is intended to be opaque to all but ns_parse.c, thus the
112 * leading _'s on the member names. Use the accessor functions, not the _'s.
114 typedef struct __ns_msg {
115 const u_char *_msg, *_eom;
116 u_int16_t _id, _flags, _counts[ns_s_max];
117 const u_char *_sections[ns_s_max];
120 const u_char *_msg_ptr;
123 /* Private data structure - do not use from outside library. */
124 struct _ns_flagdata { int mask, shift; };
125 extern struct _ns_flagdata _ns_flagdata[];
127 /* Accessor macros - this is part of the public interface. */
129 #define ns_msg_id(handle) ((handle)._id + 0)
130 #define ns_msg_base(handle) ((handle)._msg + 0)
131 #define ns_msg_end(handle) ((handle)._eom + 0)
132 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
133 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
136 * This is a parsed record. It is caller allocated and has no dynamic data.
138 typedef struct __ns_rr {
139 char name[NS_MAXDNAME];
144 const u_char * rdata;
147 /* Accessor macros - this is part of the public interface. */
148 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".")
149 #define ns_rr_type(rr) ((ns_type)((rr).type + 0))
150 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0))
151 #define ns_rr_ttl(rr) ((rr).ttl + 0)
152 #define ns_rr_rdlen(rr) ((rr).rdlength + 0)
153 #define ns_rr_rdata(rr) ((rr).rdata + 0)
156 * These don't have to be in the same order as in the packet flags word,
157 * and they can even overlap in some cases, but they will need to be kept
158 * in synch with ns_parse.c:ns_flagdata[].
160 typedef enum __ns_flag {
161 ns_f_qr, /* Question/Response. */
162 ns_f_opcode, /* Operation code. */
163 ns_f_aa, /* Authoritative Answer. */
164 ns_f_tc, /* Truncation occurred. */
165 ns_f_rd, /* Recursion Desired. */
166 ns_f_ra, /* Recursion Available. */
168 ns_f_ad, /* Authentic Data (DNSSEC). */
169 ns_f_cd, /* Checking Disabled (DNSSEC). */
170 ns_f_rcode, /* Response code. */
175 * Currently defined opcodes.
177 typedef enum __ns_opcode {
178 ns_o_query = 0, /* Standard query. */
179 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */
180 ns_o_status = 2, /* Name server status query (unsupported). */
181 /* Opcode 3 is undefined/reserved. */
182 ns_o_notify = 4, /* Zone change notification. */
183 ns_o_update = 5, /* Zone update message. */
188 * Currently defined response codes.
190 typedef enum __ns_rcode {
191 ns_r_noerror = 0, /* No error occurred. */
192 ns_r_formerr = 1, /* Format error. */
193 ns_r_servfail = 2, /* Server failure. */
194 ns_r_nxdomain = 3, /* Name error. */
195 ns_r_notimpl = 4, /* Unimplemented. */
196 ns_r_refused = 5, /* Operation refused. */
197 /* these are for BIND_UPDATE */
198 ns_r_yxdomain = 6, /* Name exists */
199 ns_r_yxrrset = 7, /* RRset exists */
200 ns_r_nxrrset = 8, /* RRset does not exist */
201 ns_r_notauth = 9, /* Not authoritative for zone */
202 ns_r_notzone = 10, /* Zone of record different from zone section */
204 /* The following are EDNS extended rcodes */
206 /* The following are TSIG errors */
213 typedef enum __ns_update_operation {
217 } ns_update_operation;
220 * This structure is used for TSIG authenticated messages
223 char name[NS_MAXDNAME], alg[NS_MAXDNAME];
227 typedef struct ns_tsig_key ns_tsig_key;
230 * This structure is used for TSIG authenticated TCP messages
232 struct ns_tcp_tsig_state {
236 unsigned char sig[NS_PACKETSZ];
239 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
241 #define NS_TSIG_FUDGE 300
242 #define NS_TSIG_TCP_COUNT 100
243 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
245 #define NS_TSIG_ERROR_NO_TSIG -10
246 #define NS_TSIG_ERROR_NO_SPACE -11
247 #define NS_TSIG_ERROR_FORMERR -12
250 * Currently defined type values for resources and queries.
252 typedef enum __ns_type {
253 ns_t_invalid = 0, /* Cookie. */
254 ns_t_a = 1, /* Host address. */
255 ns_t_ns = 2, /* Authoritative server. */
256 ns_t_md = 3, /* Mail destination. */
257 ns_t_mf = 4, /* Mail forwarder. */
258 ns_t_cname = 5, /* Canonical name. */
259 ns_t_soa = 6, /* Start of authority zone. */
260 ns_t_mb = 7, /* Mailbox domain name. */
261 ns_t_mg = 8, /* Mail group member. */
262 ns_t_mr = 9, /* Mail rename name. */
263 ns_t_null = 10, /* Null resource record. */
264 ns_t_wks = 11, /* Well known service. */
265 ns_t_ptr = 12, /* Domain name pointer. */
266 ns_t_hinfo = 13, /* Host information. */
267 ns_t_minfo = 14, /* Mailbox information. */
268 ns_t_mx = 15, /* Mail routing information. */
269 ns_t_txt = 16, /* Text strings. */
270 ns_t_rp = 17, /* Responsible person. */
271 ns_t_afsdb = 18, /* AFS cell database. */
272 ns_t_x25 = 19, /* X_25 calling address. */
273 ns_t_isdn = 20, /* ISDN calling address. */
274 ns_t_rt = 21, /* Router. */
275 ns_t_nsap = 22, /* NSAP address. */
276 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */
277 ns_t_sig = 24, /* Security signature. */
278 ns_t_key = 25, /* Security key. */
279 ns_t_px = 26, /* X.400 mail mapping. */
280 ns_t_gpos = 27, /* Geographical position (withdrawn). */
281 ns_t_aaaa = 28, /* Ip6 Address. */
282 ns_t_loc = 29, /* Location Information. */
283 ns_t_nxt = 30, /* Next domain (security). */
284 ns_t_eid = 31, /* Endpoint identifier. */
285 ns_t_nimloc = 32, /* Nimrod Locator. */
286 ns_t_srv = 33, /* Server Selection. */
287 ns_t_atma = 34, /* ATM Address */
288 ns_t_naptr = 35, /* Naming Authority PoinTeR */
289 ns_t_kx = 36, /* Key Exchange */
290 ns_t_cert = 37, /* Certification record */
291 ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */
292 ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */
293 ns_t_sink = 40, /* Kitchen sink (experimentatl) */
294 ns_t_opt = 41, /* EDNS0 option (meta-RR) */
295 ns_t_apl = 42, /* Address prefix list (RFC 3123) */
296 ns_t_tkey = 249, /* Transaction key */
297 ns_t_tsig = 250, /* Transaction signature. */
298 ns_t_ixfr = 251, /* Incremental zone transfer. */
299 ns_t_axfr = 252, /* Transfer zone of authority. */
300 ns_t_mailb = 253, /* Transfer mailbox records. */
301 ns_t_maila = 254, /* Transfer mail agent records. */
302 ns_t_any = 255, /* Wildcard match. */
303 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */
307 /* Exclusively a QTYPE? (not also an RTYPE) */
308 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
309 (t) == ns_t_mailb || (t) == ns_t_maila)
310 /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
311 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
312 /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
313 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
314 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
315 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
319 * Values for class field
321 typedef enum __ns_class {
322 ns_c_invalid = 0, /* Cookie. */
323 ns_c_in = 1, /* Internet. */
324 ns_c_2 = 2, /* unallocated/unsupported. */
325 ns_c_chaos = 3, /* MIT Chaos-net. */
326 ns_c_hs = 4, /* MIT Hesiod. */
327 /* Query class values which do not appear in resource records */
328 ns_c_none = 254, /* for prereq. sections in update requests */
329 ns_c_any = 255, /* Wildcard match. */
333 /* DNSSEC constants. */
335 typedef enum __ns_key_types {
336 ns_kt_rsa = 1, /* key type RSA/MD5 */
337 ns_kt_dh = 2, /* Diffie Hellman */
338 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */
339 ns_kt_private = 254 /* Private key type starts with OID */
342 typedef enum __ns_cert_types {
343 cert_t_pkix = 1, /* PKIX (X.509v3) */
344 cert_t_spki = 2, /* SPKI */
345 cert_t_pgp = 3, /* PGP */
346 cert_t_url = 253, /* URL private type */
347 cert_t_oid = 254 /* OID private type */
350 /* Flags field of the KEY RR rdata. */
351 #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */
352 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */
353 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */
354 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */
355 #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */
356 /* The type bits can also be interpreted independently, as single bits: */
357 #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */
358 #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */
359 #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
360 #define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */
361 #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */
362 #define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */
363 #define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */
364 #define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */
365 #define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */
366 #define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */
367 #define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */
368 #define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */
369 #define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */
370 #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */
371 #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */
372 #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */
373 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
378 NS_KEY_RESERVED10 | \
380 #define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */
382 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
383 #define NS_ALG_MD5RSA 1 /* MD5 with RSA */
384 #define NS_ALG_DH 2 /* Diffie Hellman KEY */
385 #define NS_ALG_DSA 3 /* DSA KEY */
386 #define NS_ALG_DSS NS_ALG_DSA
387 #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */
388 #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */
390 /* Protocol values */
391 /* value 0 is reserved */
392 #define NS_KEY_PROT_TLS 1
393 #define NS_KEY_PROT_EMAIL 2
394 #define NS_KEY_PROT_DNSSEC 3
395 #define NS_KEY_PROT_IPSEC 4
396 #define NS_KEY_PROT_ANY 255
399 #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */
400 #define NS_MD5RSA_MAX_BITS 4096
401 /* Total of binary mod and exp */
402 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
403 /* Max length of text sig block */
404 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4)
405 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8)
406 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8)
408 #define NS_DSA_SIG_SIZE 41
409 #define NS_DSA_MIN_SIZE 213
410 #define NS_DSA_MAX_BYTES 405
412 /* Offsets into SIG record rdata to find various values */
413 #define NS_SIG_TYPE 0 /* Type flags */
414 #define NS_SIG_ALG 2 /* Algorithm */
415 #define NS_SIG_LABELS 3 /* How many labels in name */
416 #define NS_SIG_OTTL 4 /* Original TTL */
417 #define NS_SIG_EXPIR 8 /* Expiration time */
418 #define NS_SIG_SIGNED 12 /* Signature time */
419 #define NS_SIG_FOOT 16 /* Key footprint */
420 #define NS_SIG_SIGNER 18 /* Domain name of who signed it */
422 /* How RR types are represented as bit-flags in NXT records */
423 #define NS_NXT_BITS 8
424 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
425 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
426 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
427 #define NS_NXT_MAX 127
430 * EDNS0 extended flags, host order.
432 #define NS_OPT_DNSSEC_OK 0x8000U
435 * Inline versions of get/put short/long. Pointer is advanced.
437 #define NS_GET16(s, cp) do { \
438 register const u_char *t_cp = (const u_char *)(cp); \
439 (s) = ((u_int16_t)t_cp[0] << 8) \
440 | ((u_int16_t)t_cp[1]) \
442 (cp) += NS_INT16SZ; \
445 #define NS_GET32(l, cp) do { \
446 register const u_char *t_cp = (const u_char *)(cp); \
447 (l) = ((u_int32_t)t_cp[0] << 24) \
448 | ((u_int32_t)t_cp[1] << 16) \
449 | ((u_int32_t)t_cp[2] << 8) \
450 | ((u_int32_t)t_cp[3]) \
452 (cp) += NS_INT32SZ; \
455 #define NS_PUT16(s, cp) do { \
456 register u_int16_t t_s = (u_int16_t)(s); \
457 register u_char *t_cp = (u_char *)(cp); \
458 *t_cp++ = t_s >> 8; \
460 (cp) += NS_INT16SZ; \
463 #define NS_PUT32(l, cp) do { \
464 register u_int32_t t_l = (u_int32_t)(l); \
465 register u_char *t_cp = (u_char *)(cp); \
466 *t_cp++ = t_l >> 24; \
467 *t_cp++ = t_l >> 16; \
468 *t_cp++ = t_l >> 8; \
470 (cp) += NS_INT32SZ; \
474 * ANSI C identifier hiding for bind's lib/nameser.
476 #define ns_msg_getflag __ns_msg_getflag
477 #define ns_get16 __ns_get16
478 #define ns_get32 __ns_get32
479 #define ns_put16 __ns_put16
480 #define ns_put32 __ns_put32
481 #define ns_initparse __ns_initparse
482 #define ns_skiprr __ns_skiprr
483 #define ns_parserr __ns_parserr
484 #define ns_sprintrr __ns_sprintrr
485 #define ns_sprintrrf __ns_sprintrrf
486 #define ns_format_ttl __ns_format_ttl
487 #define ns_parse_ttl __ns_parse_ttl
489 #define ns_datetosecs __ns_datetosecs
491 #define ns_name_ntol __ns_name_ntol
492 #define ns_name_ntop __ns_name_ntop
493 #define ns_name_pton __ns_name_pton
494 #define ns_name_unpack __ns_name_unpack
495 #define ns_name_pack __ns_name_pack
496 #define ns_name_compress __ns_name_compress
497 #define ns_name_uncompress __ns_name_uncompress
498 #define ns_name_skip __ns_name_skip
499 #define ns_name_rollback __ns_name_rollback
501 #define ns_sign __ns_sign
502 #define ns_sign2 __ns_sign2
503 #define ns_sign_tcp __ns_sign_tcp
504 #define ns_sign_tcp2 __ns_sign_tcp2
505 #define ns_sign_tcp_init __ns_sign_tcp_init
506 #define ns_find_tsig __ns_find_tsig
507 #define ns_verify __ns_verify
508 #define ns_verify_tcp __ns_verify_tcp
509 #define ns_verify_tcp_init __ns_verify_tcp_init
511 #define ns_samedomain __ns_samedomain
513 #define ns_subdomain __ns_subdomain
515 #define ns_makecanon __ns_makecanon
516 #define ns_samename __ns_samename
519 int ns_msg_getflag(ns_msg, int);
520 u_int ns_get16(const u_char *);
521 u_long ns_get32(const u_char *);
522 void ns_put16(u_int, u_char *);
523 void ns_put32(u_long, u_char *);
524 int ns_initparse(const u_char *, int, ns_msg *);
525 int ns_skiprr(const u_char *, const u_char *, ns_sect, int);
526 int ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
527 int ns_sprintrr(const ns_msg *, const ns_rr *,
528 const char *, const char *, char *, size_t);
529 int ns_sprintrrf(const u_char *, size_t, const char *,
530 ns_class, ns_type, u_long, const u_char *,
531 size_t, const char *, const char *,
533 int ns_format_ttl(u_long, char *, size_t);
534 int ns_parse_ttl(const char *, u_long *);
536 u_int32_t ns_datetosecs(const char *cp, int *errp);
538 int ns_name_ntol(const u_char *, u_char *, size_t);
539 int ns_name_ntop(const u_char *, char *, size_t);
540 int ns_name_pton(const char *, u_char *, size_t);
541 int ns_name_unpack(const u_char *, const u_char *,
542 const u_char *, u_char *, size_t);
543 int ns_name_pack(const u_char *, u_char *, int,
544 const u_char **, const u_char **);
545 int ns_name_uncompress(const u_char *, const u_char *,
546 const u_char *, char *, size_t);
547 int ns_name_compress(const char *, u_char *, size_t,
548 const u_char **, const u_char **);
549 int ns_name_skip(const u_char **, const u_char *);
550 void ns_name_rollback(const u_char *, const u_char **,
553 int ns_sign(u_char *, int *, int, int, void *,
554 const u_char *, int, u_char *, int *, time_t);
555 int ns_sign2(u_char *, int *, int, int, void *,
556 const u_char *, int, u_char *, int *, time_t,
557 u_char **, u_char **);
558 int ns_sign_tcp(u_char *, int *, int, int,
559 ns_tcp_tsig_state *, int);
560 int ns_sign_tcp2(u_char *, int *, int, int,
561 ns_tcp_tsig_state *, int,
562 u_char **, u_char **);
563 int ns_sign_tcp_init(void *, const u_char *, int,
564 ns_tcp_tsig_state *);
565 u_char *ns_find_tsig(u_char *, u_char *);
566 int ns_verify(u_char *, int *, void *,
567 const u_char *, int, u_char *, int *,
569 int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int);
570 int ns_verify_tcp_init(void *, const u_char *, int,
571 ns_tcp_tsig_state *);
573 int ns_samedomain(const char *, const char *);
575 int ns_subdomain(const char *, const char *);
577 int ns_makecanon(const char *, char *, size_t);
578 int ns_samename(const char *, const char *);
582 #include <arpa/nameser_compat.h>
585 #endif /* !_ARPA_NAMESER_H_ */