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/types.h> 59#include <sys/cdefs.h> 60 61/* 62 * Revision information. This is the release date in YYYYMMDD format. 63 * It can change every day so the right thing to do with it is use it 64 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not 65 * compare for equality; rather, use it to determine whether your libbind.a 66 * contains a new enough lib/nameser/ to support the feature you need. 67 */ 68 69#define __NAMESER 20090302 /*%< New interface version stamp. */ 70 71/* 72 * Define constants based on RFC0883, RFC1034, RFC 1035 73 */ 74#define NS_PACKETSZ 512 /* default UDP packet size */ 75#define NS_MAXDNAME 1025 /* maximum domain name (presentation format)*/ 76#define NS_MAXMSG 65535 /* maximum message size */ 77#define NS_MAXCDNAME 255 /* maximum compressed domain name */ 78#define NS_MAXLABEL 63 /* maximum length of domain label */ 79#define NS_MAXLABELS 128 /* theoretical max #/labels per domain name */ 80#define NS_MAXNNAME 256 /* maximum uncompressed (binary) domain name*/ 81#define NS_MAXPADDR (sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff") 82#define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ 83#define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ 84#define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ 85#define NS_INT32SZ 4 /* #/bytes of data in a uint32_t */ 86#define NS_INT16SZ 2 /* #/bytes of data in a uint16_t */ 87#define NS_INT8SZ 1 /* #/bytes of data in a uint8_t */ 88#define NS_INADDRSZ 4 /* IPv4 T_A */ 89#define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ 90#define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ 91#define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ 92 93/* 94 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 95 * in synch with it. 96 */ 97typedef enum __ns_sect { 98 ns_s_qd = 0, /* Query: Question. */ 99 ns_s_zn = 0, /* Update: Zone. */ 100 ns_s_an = 1, /* Query: Answer. */ 101 ns_s_pr = 1, /* Update: Prerequisites. */ 102 ns_s_ns = 2, /* Query: Name servers. */ 103 ns_s_ud = 2, /* Update: Update. */ 104 ns_s_ar = 3, /* Query|Update: Additional records. */ 105 ns_s_max = 4 106} ns_sect; 107 108/* 109 * Network name (compressed or not) type. Equivilent to a pointer when used 110 * in a function prototype. Can be const'd. 111 */ 112typedef u_char ns_nname[NS_MAXNNAME]; 113typedef const u_char *ns_nname_ct; 114typedef u_char *ns_nname_t; 115 116struct ns_namemap { ns_nname_ct base; int len; }; 117typedef struct ns_namemap *ns_namemap_t; 118typedef const struct ns_namemap *ns_namemap_ct; 119 120/* 121 * This is a message handle. It is caller allocated and has no dynamic data. 122 * This structure is intended to be opaque to all but ns_parse.c, thus the 123 * leading _'s on the member names. Use the accessor functions, not the _'s. 124 */ 125typedef struct __ns_msg { 126 const u_char *_msg, *_eom; 127 uint16_t _id, _flags, _counts[ns_s_max]; 128 const u_char *_sections[ns_s_max]; 129 ns_sect _sect; 130 int _rrnum; 131 const u_char *_msg_ptr; 132} ns_msg; 133/* 134 * This is a newmsg handle, used when constructing new messages with 135 * ns_newmsg_init, et al. 136 */ 137struct ns_newmsg { 138 ns_msg msg; 139 const u_char *dnptrs[25]; 140 const u_char **lastdnptr; 141}; 142typedef struct ns_newmsg ns_newmsg; 143 144/* Accessor macros - this is part of the public interface. */ 145 146#define ns_msg_id(handle) ((handle)._id + 0) 147#define ns_msg_base(handle) ((handle)._msg + 0) 148#define ns_msg_end(handle) ((handle)._eom + 0) 149#define ns_msg_size(handle) ((size_t)((handle)._eom - (handle)._msg)) 150#define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 151 152/* 153 * This is a parsed record. It is caller allocated and has no dynamic data. 154 */ 155typedef struct __ns_rr { 156 char name[NS_MAXDNAME]; 157 uint16_t type; 158 uint16_t rr_class; 159 uint32_t ttl; 160 uint16_t rdlength; 161 const u_char * rdata; 162} ns_rr; 163 164/* 165 * Same thing, but using uncompressed network binary names, and real C types. 166 */ 167typedef struct __ns_rr2 { 168 ns_nname nname; 169 size_t nnamel; 170 int type; 171 int rr_class; 172 u_int ttl; 173 int rdlength; 174 const u_char * rdata; 175} ns_rr2; 176/* Accessor macros - this is part of the public interface. */ 177#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 178#define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname) 179#define ns_rr_nnamel(rr) ((rr).nnamel + 0) 180#define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 181#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 182#define ns_rr_ttl(rr) ((u_long)(rr).ttl + 0) 183#define ns_rr_rdlen(rr) ((size_t)(rr).rdlength + 0) 184#define ns_rr_rdata(rr) ((rr).rdata + 0) 185 186/* 187 * These don't have to be in the same order as in the packet flags word, 188 * and they can even overlap in some cases, but they will need to be kept 189 * in synch with ns_parse.c:ns_flagdata[]. 190 */ 191typedef enum __ns_flag { 192 ns_f_qr, /* Question/Response. */ 193 ns_f_opcode, /* Operation code. */ 194 ns_f_aa, /* Authoritative Answer. */ 195 ns_f_tc, /* Truncation occurred. */ 196 ns_f_rd, /* Recursion Desired. */ 197 ns_f_ra, /* Recursion Available. */ 198 ns_f_z, /* MBZ. */ 199 ns_f_ad, /* Authentic Data (DNSSEC). */ 200 ns_f_cd, /* Checking Disabled (DNSSEC). */ 201 ns_f_rcode, /* Response code. */ 202 ns_f_max 203} ns_flag; 204 205/* 206 * Currently defined opcodes. 207 */ 208typedef enum __ns_opcode { 209 ns_o_query = 0, /* Standard query. */ 210 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ 211 ns_o_status = 2, /* Name server status query (unsupported). */ 212 /* Opcode 3 is undefined/reserved. */ 213 ns_o_notify = 4, /* Zone change notification. */ 214 ns_o_update = 5, /* Zone update message. */ 215 ns_o_max = 6 216} ns_opcode; 217 218/* 219 * Currently defined response codes. 220 */ 221typedef enum __ns_rcode { 222 ns_r_noerror = 0, /* No error occurred. */ 223 ns_r_formerr = 1, /* Format error. */ 224 ns_r_servfail = 2, /* Server failure. */ 225 ns_r_nxdomain = 3, /* Name error. */ 226 ns_r_notimpl = 4, /* Unimplemented. */ 227 ns_r_refused = 5, /* Operation refused. */ 228 /* these are for BIND_UPDATE */ 229 ns_r_yxdomain = 6, /* Name exists */ 230 ns_r_yxrrset = 7, /* RRset exists */ 231 ns_r_nxrrset = 8, /* RRset does not exist */ 232 ns_r_notauth = 9, /* Not authoritative for zone */ 233 ns_r_notzone = 10, /* Zone of record different from zone section */ 234 ns_r_max = 11, 235 /* The following are EDNS extended rcodes */ 236 ns_r_badvers = 16, 237 /* The following are TSIG errors */ 238 ns_r_badsig = 16, 239 ns_r_badkey = 17, 240 ns_r_badtime = 18 241} ns_rcode; 242 243/* BIND_UPDATE */ 244typedef enum __ns_update_operation { 245 ns_uop_delete = 0, 246 ns_uop_add = 1, 247 ns_uop_max = 2 248} ns_update_operation; 249 250/* 251 * This structure is used for TSIG authenticated messages 252 */ 253struct ns_tsig_key { 254 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 255 unsigned char *data; 256 int len; 257}; 258typedef struct ns_tsig_key ns_tsig_key; 259 260/* 261 * This structure is used for TSIG authenticated TCP messages 262 */ 263struct ns_tcp_tsig_state { 264 int counter; 265 struct dst_key *key; 266 void *ctx; 267 unsigned char sig[NS_PACKETSZ]; 268 int siglen; 269}; 270typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 271 272#define NS_TSIG_FUDGE 300 273#define NS_TSIG_TCP_COUNT 100 274#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 275 276#define NS_TSIG_ERROR_NO_TSIG -10 277#define NS_TSIG_ERROR_NO_SPACE -11 278#define NS_TSIG_ERROR_FORMERR -12 279 280/* 281 * Currently defined type values for resources and queries. 282 */ 283typedef enum __ns_type { 284 ns_t_invalid = 0, /* Cookie. */ 285 ns_t_a = 1, /* Host address. */ 286 ns_t_ns = 2, /* Authoritative server. */ 287 ns_t_md = 3, /* Mail destination. */ 288 ns_t_mf = 4, /* Mail forwarder. */ 289 ns_t_cname = 5, /* Canonical name. */ 290 ns_t_soa = 6, /* Start of authority zone. */ 291 ns_t_mb = 7, /* Mailbox domain name. */ 292 ns_t_mg = 8, /* Mail group member. */ 293 ns_t_mr = 9, /* Mail rename name. */ 294 ns_t_null = 10, /* Null resource record. */ 295 ns_t_wks = 11, /* Well known service. */ 296 ns_t_ptr = 12, /* Domain name pointer. */ 297 ns_t_hinfo = 13, /* Host information. */ 298 ns_t_minfo = 14, /* Mailbox information. */ 299 ns_t_mx = 15, /* Mail routing information. */ 300 ns_t_txt = 16, /* Text strings. */ 301 ns_t_rp = 17, /* Responsible person. */ 302 ns_t_afsdb = 18, /* AFS cell database. */ 303 ns_t_x25 = 19, /* X_25 calling address. */ 304 ns_t_isdn = 20, /* ISDN calling address. */ 305 ns_t_rt = 21, /* Router. */ 306 ns_t_nsap = 22, /* NSAP address. */ 307 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 308 ns_t_sig = 24, /* Security signature. */ 309 ns_t_key = 25, /* Security key. */ 310 ns_t_px = 26, /* X.400 mail mapping. */ 311 ns_t_gpos = 27, /* Geographical position (withdrawn). */ 312 ns_t_aaaa = 28, /* IPv6 Address. */ 313 ns_t_loc = 29, /* Location Information. */ 314 ns_t_nxt = 30, /* Next domain (security). */ 315 ns_t_eid = 31, /* Endpoint identifier. */ 316 ns_t_nimloc = 32, /* Nimrod Locator. */ 317 ns_t_srv = 33, /* Server Selection. */ 318 ns_t_atma = 34, /* ATM Address */ 319 ns_t_naptr = 35, /* Naming Authority PoinTeR */ 320 ns_t_kx = 36, /* Key Exchange */ 321 ns_t_cert = 37, /* Certification record */ 322 ns_t_a6 = 38, /* IPv6 address (experimental) */ 323 ns_t_dname = 39, /* Non-terminal DNAME */ 324 ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 325 ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 326 ns_t_apl = 42, /* Address prefix list (RFC 3123) */ 327 ns_t_ds = 43, /* Delegation Signer */ 328 ns_t_sshfp = 44, /* SSH Fingerprint */ 329 ns_t_ipseckey = 45, /* IPSEC Key */ 330 ns_t_rrsig = 46, /* RRset Signature */ 331 ns_t_nsec = 47, /* Negative security */ 332 ns_t_dnskey = 48, /* DNS Key */ 333 ns_t_dhcid = 49, /* Dynamic host configuratin identifier */ 334 ns_t_nsec3 = 50, /* Negative security type 3 */ 335 ns_t_nsec3param = 51, /* Negative security type 3 parameters */ 336 ns_t_hip = 55, /* Host Identity Protocol */ 337 ns_t_spf = 99, /* Sender Policy Framework */ 338 ns_t_tkey = 249, /* Transaction key */ 339 ns_t_tsig = 250, /* Transaction signature. */ 340 ns_t_ixfr = 251, /* Incremental zone transfer. */ 341 ns_t_axfr = 252, /* Transfer zone of authority. */ 342 ns_t_mailb = 253, /* Transfer mailbox records. */ 343 ns_t_maila = 254, /* Transfer mail agent records. */ 344 ns_t_any = 255, /* Wildcard match. */ 345 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 346 ns_t_dlv = 32769, /* DNSSEC look-aside validatation. */ 347 ns_t_max = 65536 348} ns_type; 349 350/* Exclusively a QTYPE? (not also an RTYPE) */ 351#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 352 (t) == ns_t_mailb || (t) == ns_t_maila) 353/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 354#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 355/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 356#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 357#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 358#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 359 (t) == ns_t_zxfr) 360 361/* 362 * Values for class field 363 */ 364typedef enum __ns_class { 365 ns_c_invalid = 0, /* Cookie. */ 366 ns_c_in = 1, /* Internet. */ 367 ns_c_2 = 2, /* unallocated/unsupported. */ 368 ns_c_chaos = 3, /* MIT Chaos-net. */ 369 ns_c_hs = 4, /* MIT Hesiod. */ 370 /* Query class values which do not appear in resource records */ 371 ns_c_none = 254, /* for prereq. sections in update requests */ 372 ns_c_any = 255, /* Wildcard match. */ 373 ns_c_max = 65536 374} ns_class; 375 376/* DNSSEC constants. */ 377 378typedef enum __ns_key_types { 379 ns_kt_rsa = 1, /* key type RSA/MD5 */ 380 ns_kt_dh = 2, /* Diffie Hellman */ 381 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ 382 ns_kt_private = 254 /* Private key type starts with OID */ 383} ns_key_types; 384 385typedef enum __ns_cert_types { 386 cert_t_pkix = 1, /* PKIX (X.509v3) */ 387 cert_t_spki = 2, /* SPKI */ 388 cert_t_pgp = 3, /* PGP */ 389 cert_t_url = 253, /* URL private type */ 390 cert_t_oid = 254 /* OID private type */ 391} ns_cert_types; 392 393/* Flags field of the KEY RR rdata. */ 394#define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ 395#define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ 396#define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ 397#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ 398#define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ 399/* The type bits can also be interpreted independently, as single bits: */ 400#define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ 401#define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ 402#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 403#define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */ 404#define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ 405#define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */ 406#define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */ 407#define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */ 408#define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */ 409#define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */ 410#define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */ 411#define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */ 412#define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */ 413#define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ 414#define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ 415#define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ 416#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 417 NS_KEY_RESERVED4 | \ 418 NS_KEY_RESERVED5 | \ 419 NS_KEY_RESERVED8 | \ 420 NS_KEY_RESERVED9 | \ 421 NS_KEY_RESERVED10 | \ 422 NS_KEY_RESERVED11 ) 423#define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */ 424 425/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 426#define NS_ALG_MD5RSA 1 /* MD5 with RSA */ 427#define NS_ALG_DH 2 /* Diffie Hellman KEY */ 428#define NS_ALG_DSA 3 /* DSA KEY */ 429#define NS_ALG_DSS NS_ALG_DSA 430#define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ 431#define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ 432 433/* Protocol values */ 434/* value 0 is reserved */ 435#define NS_KEY_PROT_TLS 1 436#define NS_KEY_PROT_EMAIL 2 437#define NS_KEY_PROT_DNSSEC 3 438#define NS_KEY_PROT_IPSEC 4 439#define NS_KEY_PROT_ANY 255 440 441/* Signatures */ 442#define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ 443#define NS_MD5RSA_MAX_BITS 4096 444 /* Total of binary mod and exp */ 445#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 446 /* Max length of text sig block */ 447#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 448#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 449#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 450 451#define NS_DSA_SIG_SIZE 41 452#define NS_DSA_MIN_SIZE 213 453#define NS_DSA_MAX_BYTES 405 454 455/* Offsets into SIG record rdata to find various values */ 456#define NS_SIG_TYPE 0 /* Type flags */ 457#define NS_SIG_ALG 2 /* Algorithm */ 458#define NS_SIG_LABELS 3 /* How many labels in name */ 459#define NS_SIG_OTTL 4 /* Original TTL */ 460#define NS_SIG_EXPIR 8 /* Expiration time */ 461#define NS_SIG_SIGNED 12 /* Signature time */ 462#define NS_SIG_FOOT 16 /* Key footprint */ 463#define NS_SIG_SIGNER 18 /* Domain name of who signed it */ 464 465/* How RR types are represented as bit-flags in NXT records */ 466#define NS_NXT_BITS 8 467#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 468#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 469#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 470#define NS_NXT_MAX 127 471 472/* 473 * EDNS0 extended flags and option codes, host order. 474 */ 475#define NS_OPT_DNSSEC_OK 0x8000U 476#define NS_OPT_NSID 3 477 478/* 479 * Inline versions of get/put short/long. Pointer is advanced. 480 */ 481#define NS_GET16(s, cp) do { \ 482 const u_char *t_cp = (const u_char *)(cp); \ 483 (s) = ((uint16_t)t_cp[0] << 8) \ 484 | ((uint16_t)t_cp[1]) \ 485 ; \ 486 (cp) += NS_INT16SZ; \ 487} while (/*CONSTCOND*/0) 488 489#define NS_GET32(l, cp) do { \ 490 const u_char *t_cp = (const u_char *)(cp); \ 491 (l) = ((uint32_t)t_cp[0] << 24) \ 492 | ((uint32_t)t_cp[1] << 16) \ 493 | ((uint32_t)t_cp[2] << 8) \ 494 | ((uint32_t)t_cp[3]) \ 495 ; \ 496 (cp) += NS_INT32SZ; \ 497} while (/*CONSTCOND*/0) 498 499#define NS_PUT16(s, cp) do { \ 500 uint32_t t_s = (uint32_t)(s); \ 501 u_char *t_cp = (u_char *)(cp); \ 502 *t_cp++ = t_s >> 8; \ 503 *t_cp = t_s; \ 504 (cp) += NS_INT16SZ; \ 505} while (/*CONSTCOND*/0) 506 507#define NS_PUT32(l, cp) do { \ 508 uint32_t t_l = (uint32_t)(l); \ 509 u_char *t_cp = (u_char *)(cp); \ 510 *t_cp++ = t_l >> 24; \ 511 *t_cp++ = t_l >> 16; \ 512 *t_cp++ = t_l >> 8; \ 513 *t_cp = t_l; \ 514 (cp) += NS_INT32SZ; \ 515} while (/*CONSTCOND*/0) 516 517__BEGIN_DECLS 518 519#if !defined(__LP64__) 520/* Annoyingly, LP32 shipped with __ names. */ 521#define ns_msg_getflag __ns_msg_getflag 522#define ns_get16 __ns_get16 523#define ns_get32 __ns_get32 524#define ns_put16 __ns_put16 525#define ns_put32 __ns_put32 526#define ns_initparse __ns_initparse 527#define ns_skiprr __ns_skiprr 528#define ns_parserr __ns_parserr 529#define ns_parserr2 __ns_parserr2 530#define ns_sprintrr __ns_sprintrr 531#define ns_sprintrrf __ns_sprintrrf 532#define ns_format_ttl __ns_format_ttl 533#define ns_parse_ttl __ns_parse_ttl 534#define ns_datetosecs __ns_datetosecs 535#define ns_name_ntol __ns_name_ntol 536#define ns_name_ntop __ns_name_ntop 537#define ns_name_pton __ns_name_pton 538#define ns_name_pton2 __ns_name_pton2 539#define ns_name_unpack __ns_name_unpack 540#define ns_name_unpack2 __ns_name_unpack2 541#define ns_name_pack __ns_name_pack 542#define ns_name_compress __ns_name_compress 543#define ns_name_uncompress __ns_name_uncompress 544#define ns_name_skip __ns_name_skip 545#define ns_name_rollback __ns_name_rollback 546#define ns_name_length __ns_name_length 547#define ns_name_eq __ns_name_eq 548#define ns_name_owned __ns_name_owned 549#define ns_name_map __ns_name_map 550#define ns_name_labels __ns_name_labels 551#define ns_sign __ns_sign 552#define ns_sign2 __ns_sign2 553#define ns_sign_tcp __ns_sign_tcp 554#define ns_sign_tcp2 __ns_sign_tcp2 555#define ns_sign_tcp_init __ns_sign_tcp_init 556#define ns_find_tsig __ns_find_tsig 557#define ns_verify __ns_verify 558#define ns_verify_tcp __ns_verify_tcp 559#define ns_verify_tcp_init __ns_verify_tcp_init 560#define ns_samedomain __ns_samedomain 561#define ns_subdomain __ns_subdomain 562#define ns_makecanon __ns_makecanon 563#define ns_samename __ns_samename 564 565int ns_msg_getflag(ns_msg, int); 566uint16_t ns_get16(const u_char*); 567uint32_t ns_get32(const u_char*); 568void ns_put16(uint16_t, u_char*); 569void ns_put32(uint32_t, u_char*); 570int ns_initparse(const u_char*, int, ns_msg*); 571int ns_skiprr(const u_char*, const u_char*, ns_sect, int); 572int ns_parserr(ns_msg*, ns_sect, int, ns_rr*); 573int ns_sprintrr(const ns_msg*, const ns_rr*, const char*, const char*, char*, size_t); 574int ns_sprintrrf(const u_char*, size_t, const char*, ns_class, ns_type, u_long, const u_char*, 575 size_t, const char*, const char*, char*, size_t); 576int ns_format_ttl(u_long, char*, size_t); 577int ns_name_ntol(const u_char*, u_char*, size_t); 578int ns_name_ntop(const u_char*, char*, size_t); 579int ns_name_pton(const char*, u_char*, size_t); 580int ns_name_unpack(const u_char*, const u_char*, const u_char*, u_char*, size_t); 581int ns_name_pack(const u_char*, u_char*, int, const u_char**, const u_char**); 582int ns_name_uncompress(const u_char*, const u_char*, const u_char*, char*, size_t); 583int ns_name_compress(const char*, u_char*, size_t, const u_char**, const u_char**); 584int ns_name_skip(const u_char**, const u_char*); 585void ns_name_rollback(const u_char*, const u_char**, const u_char**); 586 587int ns_makecanon(const char*, char*, size_t); 588int ns_samename(const char*, const char*); 589 590#else 591/* The names of these symbols were accidentally prefixed with __ in L. */ 592/* The duplication here is intentional to avoid declaring different symbols with the same 593 * declaration. */ 594int ns_msg_getflag(ns_msg, int) __INTRODUCED_IN_64(23); 595uint16_t ns_get16(const u_char*) __INTRODUCED_IN_64(23); 596uint32_t ns_get32(const u_char*) __INTRODUCED_IN_64(23); 597void ns_put16(uint16_t, u_char*) __INTRODUCED_IN_64(23); 598void ns_put32(uint32_t, u_char*) __INTRODUCED_IN_64(23); 599int ns_initparse(const u_char*, int, ns_msg*) __INTRODUCED_IN_64(23); 600int ns_skiprr(const u_char*, const u_char*, ns_sect, int) __INTRODUCED_IN_64(23); 601int ns_parserr(ns_msg*, ns_sect, int, ns_rr*) __INTRODUCED_IN_64(23); 602int ns_sprintrr(const ns_msg*, const ns_rr*, const char*, const char*, char*, size_t) 603 __INTRODUCED_IN_64(23); 604int ns_sprintrrf(const u_char*, size_t, const char*, ns_class, ns_type, u_long, const u_char*, 605 size_t, const char*, const char*, char*, size_t) __INTRODUCED_IN_64(23); 606int ns_format_ttl(u_long, char*, size_t) __INTRODUCED_IN_64(23); 607int ns_name_ntol(const u_char*, u_char*, size_t) __INTRODUCED_IN_64(23); 608int ns_name_ntop(const u_char*, char*, size_t) __INTRODUCED_IN_64(23); 609int ns_name_pton(const char*, u_char*, size_t) __INTRODUCED_IN_64(23); 610int ns_name_unpack(const u_char*, const u_char*, const u_char*, u_char*, size_t) 611 __INTRODUCED_IN_64(23); 612int ns_name_pack(const u_char*, u_char*, int, const u_char**, const u_char**) __INTRODUCED_IN_64(23); 613int ns_name_uncompress(const u_char*, const u_char*, const u_char*, char*, size_t) 614 __INTRODUCED_IN_64(23); 615int ns_name_compress(const char*, u_char*, size_t, const u_char**, const u_char**) 616 __INTRODUCED_IN_64(23); 617int ns_name_skip(const u_char**, const u_char*) __INTRODUCED_IN_64(23); 618void ns_name_rollback(const u_char*, const u_char**, const u_char**) __INTRODUCED_IN_64(23); 619 620int ns_makecanon(const char*, char*, size_t) __INTRODUCED_IN_64(23); 621int ns_samename(const char*, const char*) __INTRODUCED_IN_64(23); 622#endif /* !defined(__LP64__) */ 623 624__END_DECLS 625 626#ifdef BIND_4_COMPAT 627#include <arpa/nameser_compat.h> 628#endif 629 630#endif /* !_ARPA_NAMESER_H_ */ 631