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/* Private data structure - do not use from outside library. */ 145struct _ns_flagdata { int mask, shift; }; 146extern const struct _ns_flagdata _ns_flagdata[]; 147 148/* Accessor macros - this is part of the public interface. */ 149 150#define ns_msg_id(handle) ((handle)._id + 0) 151#define ns_msg_base(handle) ((handle)._msg + 0) 152#define ns_msg_end(handle) ((handle)._eom + 0) 153#define ns_msg_size(handle) ((size_t)((handle)._eom - (handle)._msg)) 154#define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 155 156/* 157 * This is a parsed record. It is caller allocated and has no dynamic data. 158 */ 159typedef struct __ns_rr { 160 char name[NS_MAXDNAME]; 161 uint16_t type; 162 uint16_t rr_class; 163 uint32_t ttl; 164 uint16_t rdlength; 165 const u_char * rdata; 166} ns_rr; 167 168/* 169 * Same thing, but using uncompressed network binary names, and real C types. 170 */ 171typedef struct __ns_rr2 { 172 ns_nname nname; 173 size_t nnamel; 174 int type; 175 int rr_class; 176 u_int ttl; 177 int rdlength; 178 const u_char * rdata; 179} ns_rr2; 180/* Accessor macros - this is part of the public interface. */ 181#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 182#define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname) 183#define ns_rr_nnamel(rr) ((rr).nnamel + 0) 184#define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 185#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 186#define ns_rr_ttl(rr) ((u_long)(rr).ttl + 0) 187#define ns_rr_rdlen(rr) ((size_t)(rr).rdlength + 0) 188#define ns_rr_rdata(rr) ((rr).rdata + 0) 189 190/* 191 * These don't have to be in the same order as in the packet flags word, 192 * and they can even overlap in some cases, but they will need to be kept 193 * in synch with ns_parse.c:ns_flagdata[]. 194 */ 195typedef enum __ns_flag { 196 ns_f_qr, /* Question/Response. */ 197 ns_f_opcode, /* Operation code. */ 198 ns_f_aa, /* Authoritative Answer. */ 199 ns_f_tc, /* Truncation occurred. */ 200 ns_f_rd, /* Recursion Desired. */ 201 ns_f_ra, /* Recursion Available. */ 202 ns_f_z, /* MBZ. */ 203 ns_f_ad, /* Authentic Data (DNSSEC). */ 204 ns_f_cd, /* Checking Disabled (DNSSEC). */ 205 ns_f_rcode, /* Response code. */ 206 ns_f_max 207} ns_flag; 208 209/* 210 * Currently defined opcodes. 211 */ 212typedef enum __ns_opcode { 213 ns_o_query = 0, /* Standard query. */ 214 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ 215 ns_o_status = 2, /* Name server status query (unsupported). */ 216 /* Opcode 3 is undefined/reserved. */ 217 ns_o_notify = 4, /* Zone change notification. */ 218 ns_o_update = 5, /* Zone update message. */ 219 ns_o_max = 6 220} ns_opcode; 221 222/* 223 * Currently defined response codes. 224 */ 225typedef enum __ns_rcode { 226 ns_r_noerror = 0, /* No error occurred. */ 227 ns_r_formerr = 1, /* Format error. */ 228 ns_r_servfail = 2, /* Server failure. */ 229 ns_r_nxdomain = 3, /* Name error. */ 230 ns_r_notimpl = 4, /* Unimplemented. */ 231 ns_r_refused = 5, /* Operation refused. */ 232 /* these are for BIND_UPDATE */ 233 ns_r_yxdomain = 6, /* Name exists */ 234 ns_r_yxrrset = 7, /* RRset exists */ 235 ns_r_nxrrset = 8, /* RRset does not exist */ 236 ns_r_notauth = 9, /* Not authoritative for zone */ 237 ns_r_notzone = 10, /* Zone of record different from zone section */ 238 ns_r_max = 11, 239 /* The following are EDNS extended rcodes */ 240 ns_r_badvers = 16, 241 /* The following are TSIG errors */ 242 ns_r_badsig = 16, 243 ns_r_badkey = 17, 244 ns_r_badtime = 18 245} ns_rcode; 246 247/* BIND_UPDATE */ 248typedef enum __ns_update_operation { 249 ns_uop_delete = 0, 250 ns_uop_add = 1, 251 ns_uop_max = 2 252} ns_update_operation; 253 254/* 255 * This structure is used for TSIG authenticated messages 256 */ 257struct ns_tsig_key { 258 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 259 unsigned char *data; 260 int len; 261}; 262typedef struct ns_tsig_key ns_tsig_key; 263 264/* 265 * This structure is used for TSIG authenticated TCP messages 266 */ 267struct ns_tcp_tsig_state { 268 int counter; 269 struct dst_key *key; 270 void *ctx; 271 unsigned char sig[NS_PACKETSZ]; 272 int siglen; 273}; 274typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 275 276#define NS_TSIG_FUDGE 300 277#define NS_TSIG_TCP_COUNT 100 278#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 279 280#define NS_TSIG_ERROR_NO_TSIG -10 281#define NS_TSIG_ERROR_NO_SPACE -11 282#define NS_TSIG_ERROR_FORMERR -12 283 284/* 285 * Currently defined type values for resources and queries. 286 */ 287typedef enum __ns_type { 288 ns_t_invalid = 0, /* Cookie. */ 289 ns_t_a = 1, /* Host address. */ 290 ns_t_ns = 2, /* Authoritative server. */ 291 ns_t_md = 3, /* Mail destination. */ 292 ns_t_mf = 4, /* Mail forwarder. */ 293 ns_t_cname = 5, /* Canonical name. */ 294 ns_t_soa = 6, /* Start of authority zone. */ 295 ns_t_mb = 7, /* Mailbox domain name. */ 296 ns_t_mg = 8, /* Mail group member. */ 297 ns_t_mr = 9, /* Mail rename name. */ 298 ns_t_null = 10, /* Null resource record. */ 299 ns_t_wks = 11, /* Well known service. */ 300 ns_t_ptr = 12, /* Domain name pointer. */ 301 ns_t_hinfo = 13, /* Host information. */ 302 ns_t_minfo = 14, /* Mailbox information. */ 303 ns_t_mx = 15, /* Mail routing information. */ 304 ns_t_txt = 16, /* Text strings. */ 305 ns_t_rp = 17, /* Responsible person. */ 306 ns_t_afsdb = 18, /* AFS cell database. */ 307 ns_t_x25 = 19, /* X_25 calling address. */ 308 ns_t_isdn = 20, /* ISDN calling address. */ 309 ns_t_rt = 21, /* Router. */ 310 ns_t_nsap = 22, /* NSAP address. */ 311 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 312 ns_t_sig = 24, /* Security signature. */ 313 ns_t_key = 25, /* Security key. */ 314 ns_t_px = 26, /* X.400 mail mapping. */ 315 ns_t_gpos = 27, /* Geographical position (withdrawn). */ 316 ns_t_aaaa = 28, /* IPv6 Address. */ 317 ns_t_loc = 29, /* Location Information. */ 318 ns_t_nxt = 30, /* Next domain (security). */ 319 ns_t_eid = 31, /* Endpoint identifier. */ 320 ns_t_nimloc = 32, /* Nimrod Locator. */ 321 ns_t_srv = 33, /* Server Selection. */ 322 ns_t_atma = 34, /* ATM Address */ 323 ns_t_naptr = 35, /* Naming Authority PoinTeR */ 324 ns_t_kx = 36, /* Key Exchange */ 325 ns_t_cert = 37, /* Certification record */ 326 ns_t_a6 = 38, /* IPv6 address (experimental) */ 327 ns_t_dname = 39, /* Non-terminal DNAME */ 328 ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 329 ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 330 ns_t_apl = 42, /* Address prefix list (RFC 3123) */ 331 ns_t_ds = 43, /* Delegation Signer */ 332 ns_t_sshfp = 44, /* SSH Fingerprint */ 333 ns_t_ipseckey = 45, /* IPSEC Key */ 334 ns_t_rrsig = 46, /* RRset Signature */ 335 ns_t_nsec = 47, /* Negative security */ 336 ns_t_dnskey = 48, /* DNS Key */ 337 ns_t_dhcid = 49, /* Dynamic host configuratin identifier */ 338 ns_t_nsec3 = 50, /* Negative security type 3 */ 339 ns_t_nsec3param = 51, /* Negative security type 3 parameters */ 340 ns_t_hip = 55, /* Host Identity Protocol */ 341 ns_t_spf = 99, /* Sender Policy Framework */ 342 ns_t_tkey = 249, /* Transaction key */ 343 ns_t_tsig = 250, /* Transaction signature. */ 344 ns_t_ixfr = 251, /* Incremental zone transfer. */ 345 ns_t_axfr = 252, /* Transfer zone of authority. */ 346 ns_t_mailb = 253, /* Transfer mailbox records. */ 347 ns_t_maila = 254, /* Transfer mail agent records. */ 348 ns_t_any = 255, /* Wildcard match. */ 349 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 350 ns_t_dlv = 32769, /* DNSSEC look-aside validatation. */ 351 ns_t_max = 65536 352} ns_type; 353 354/* Exclusively a QTYPE? (not also an RTYPE) */ 355#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 356 (t) == ns_t_mailb || (t) == ns_t_maila) 357/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 358#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 359/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 360#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 361#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 362#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 363 (t) == ns_t_zxfr) 364 365/* 366 * Values for class field 367 */ 368typedef enum __ns_class { 369 ns_c_invalid = 0, /* Cookie. */ 370 ns_c_in = 1, /* Internet. */ 371 ns_c_2 = 2, /* unallocated/unsupported. */ 372 ns_c_chaos = 3, /* MIT Chaos-net. */ 373 ns_c_hs = 4, /* MIT Hesiod. */ 374 /* Query class values which do not appear in resource records */ 375 ns_c_none = 254, /* for prereq. sections in update requests */ 376 ns_c_any = 255, /* Wildcard match. */ 377 ns_c_max = 65536 378} ns_class; 379 380/* DNSSEC constants. */ 381 382typedef enum __ns_key_types { 383 ns_kt_rsa = 1, /* key type RSA/MD5 */ 384 ns_kt_dh = 2, /* Diffie Hellman */ 385 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ 386 ns_kt_private = 254 /* Private key type starts with OID */ 387} ns_key_types; 388 389typedef enum __ns_cert_types { 390 cert_t_pkix = 1, /* PKIX (X.509v3) */ 391 cert_t_spki = 2, /* SPKI */ 392 cert_t_pgp = 3, /* PGP */ 393 cert_t_url = 253, /* URL private type */ 394 cert_t_oid = 254 /* OID private type */ 395} ns_cert_types; 396 397/* Flags field of the KEY RR rdata. */ 398#define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ 399#define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ 400#define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ 401#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ 402#define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ 403/* The type bits can also be interpreted independently, as single bits: */ 404#define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ 405#define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ 406#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 407#define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */ 408#define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ 409#define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */ 410#define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */ 411#define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */ 412#define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */ 413#define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */ 414#define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */ 415#define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */ 416#define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */ 417#define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ 418#define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ 419#define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ 420#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 421 NS_KEY_RESERVED4 | \ 422 NS_KEY_RESERVED5 | \ 423 NS_KEY_RESERVED8 | \ 424 NS_KEY_RESERVED9 | \ 425 NS_KEY_RESERVED10 | \ 426 NS_KEY_RESERVED11 ) 427#define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */ 428 429/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 430#define NS_ALG_MD5RSA 1 /* MD5 with RSA */ 431#define NS_ALG_DH 2 /* Diffie Hellman KEY */ 432#define NS_ALG_DSA 3 /* DSA KEY */ 433#define NS_ALG_DSS NS_ALG_DSA 434#define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ 435#define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ 436 437/* Protocol values */ 438/* value 0 is reserved */ 439#define NS_KEY_PROT_TLS 1 440#define NS_KEY_PROT_EMAIL 2 441#define NS_KEY_PROT_DNSSEC 3 442#define NS_KEY_PROT_IPSEC 4 443#define NS_KEY_PROT_ANY 255 444 445/* Signatures */ 446#define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ 447#define NS_MD5RSA_MAX_BITS 4096 448 /* Total of binary mod and exp */ 449#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 450 /* Max length of text sig block */ 451#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 452#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 453#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 454 455#define NS_DSA_SIG_SIZE 41 456#define NS_DSA_MIN_SIZE 213 457#define NS_DSA_MAX_BYTES 405 458 459/* Offsets into SIG record rdata to find various values */ 460#define NS_SIG_TYPE 0 /* Type flags */ 461#define NS_SIG_ALG 2 /* Algorithm */ 462#define NS_SIG_LABELS 3 /* How many labels in name */ 463#define NS_SIG_OTTL 4 /* Original TTL */ 464#define NS_SIG_EXPIR 8 /* Expiration time */ 465#define NS_SIG_SIGNED 12 /* Signature time */ 466#define NS_SIG_FOOT 16 /* Key footprint */ 467#define NS_SIG_SIGNER 18 /* Domain name of who signed it */ 468 469/* How RR types are represented as bit-flags in NXT records */ 470#define NS_NXT_BITS 8 471#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 472#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 473#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 474#define NS_NXT_MAX 127 475 476/* 477 * EDNS0 extended flags and option codes, host order. 478 */ 479#define NS_OPT_DNSSEC_OK 0x8000U 480#define NS_OPT_NSID 3 481 482/* 483 * Inline versions of get/put short/long. Pointer is advanced. 484 */ 485#define NS_GET16(s, cp) do { \ 486 const u_char *t_cp = (const u_char *)(cp); \ 487 (s) = ((uint16_t)t_cp[0] << 8) \ 488 | ((uint16_t)t_cp[1]) \ 489 ; \ 490 (cp) += NS_INT16SZ; \ 491} while (/*CONSTCOND*/0) 492 493#define NS_GET32(l, cp) do { \ 494 const u_char *t_cp = (const u_char *)(cp); \ 495 (l) = ((uint32_t)t_cp[0] << 24) \ 496 | ((uint32_t)t_cp[1] << 16) \ 497 | ((uint32_t)t_cp[2] << 8) \ 498 | ((uint32_t)t_cp[3]) \ 499 ; \ 500 (cp) += NS_INT32SZ; \ 501} while (/*CONSTCOND*/0) 502 503#define NS_PUT16(s, cp) do { \ 504 uint32_t t_s = (uint32_t)(s); \ 505 u_char *t_cp = (u_char *)(cp); \ 506 *t_cp++ = t_s >> 8; \ 507 *t_cp = t_s; \ 508 (cp) += NS_INT16SZ; \ 509} while (/*CONSTCOND*/0) 510 511#define NS_PUT32(l, cp) do { \ 512 uint32_t t_l = (uint32_t)(l); \ 513 u_char *t_cp = (u_char *)(cp); \ 514 *t_cp++ = t_l >> 24; \ 515 *t_cp++ = t_l >> 16; \ 516 *t_cp++ = t_l >> 8; \ 517 *t_cp = t_l; \ 518 (cp) += NS_INT32SZ; \ 519} while (/*CONSTCOND*/0) 520 521#if !defined(__LP64__) 522/* Annoyingly, LP32 shipped with __ names. */ 523#define ns_msg_getflag __ns_msg_getflag 524#define ns_get16 __ns_get16 525#define ns_get32 __ns_get32 526#define ns_put16 __ns_put16 527#define ns_put32 __ns_put32 528#define ns_initparse __ns_initparse 529#define ns_skiprr __ns_skiprr 530#define ns_parserr __ns_parserr 531#define ns_parserr2 __ns_parserr2 532#define ns_sprintrr __ns_sprintrr 533#define ns_sprintrrf __ns_sprintrrf 534#define ns_format_ttl __ns_format_ttl 535#define ns_parse_ttl __ns_parse_ttl 536#define ns_datetosecs __ns_datetosecs 537#define ns_name_ntol __ns_name_ntol 538#define ns_name_ntop __ns_name_ntop 539#define ns_name_pton __ns_name_pton 540#define ns_name_pton2 __ns_name_pton2 541#define ns_name_unpack __ns_name_unpack 542#define ns_name_unpack2 __ns_name_unpack2 543#define ns_name_pack __ns_name_pack 544#define ns_name_compress __ns_name_compress 545#define ns_name_uncompress __ns_name_uncompress 546#define ns_name_skip __ns_name_skip 547#define ns_name_rollback __ns_name_rollback 548#define ns_name_length __ns_name_length 549#define ns_name_eq __ns_name_eq 550#define ns_name_owned __ns_name_owned 551#define ns_name_map __ns_name_map 552#define ns_name_labels __ns_name_labels 553#define ns_sign __ns_sign 554#define ns_sign2 __ns_sign2 555#define ns_sign_tcp __ns_sign_tcp 556#define ns_sign_tcp2 __ns_sign_tcp2 557#define ns_sign_tcp_init __ns_sign_tcp_init 558#define ns_find_tsig __ns_find_tsig 559#define ns_verify __ns_verify 560#define ns_verify_tcp __ns_verify_tcp 561#define ns_verify_tcp_init __ns_verify_tcp_init 562#define ns_samedomain __ns_samedomain 563#define ns_subdomain __ns_subdomain 564#define ns_makecanon __ns_makecanon 565#define ns_samename __ns_samename 566#endif 567 568__BEGIN_DECLS 569int ns_msg_getflag(ns_msg, int) __LIBC_ABI_PUBLIC__; 570uint16_t ns_get16(const u_char *) __LIBC_ABI_PUBLIC__; 571uint32_t ns_get32(const u_char *) __LIBC_ABI_PUBLIC__; 572void ns_put16(uint16_t, u_char *) __LIBC_ABI_PUBLIC__; 573void ns_put32(uint32_t, u_char *) __LIBC_ABI_PUBLIC__; 574int ns_initparse(const u_char *, int, ns_msg *) __LIBC_ABI_PUBLIC__; 575int ns_skiprr(const u_char *, const u_char *, ns_sect, int) __LIBC_ABI_PUBLIC__; 576int ns_parserr(ns_msg *, ns_sect, int, ns_rr *) __LIBC_ABI_PUBLIC__; 577int ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *) __LIBC_HIDDEN__; 578int ns_sprintrr(const ns_msg *, const ns_rr *, 579 const char *, const char *, char *, size_t) __LIBC_ABI_PUBLIC__; 580int ns_sprintrrf(const u_char *, size_t, const char *, 581 ns_class, ns_type, u_long, const u_char *, 582 size_t, const char *, const char *, 583 char *, size_t) __LIBC_ABI_PUBLIC__; 584int ns_format_ttl(u_long, char *, size_t) __LIBC_ABI_PUBLIC__; 585int ns_parse_ttl(const char *, u_long *) __LIBC_ABI_PUBLIC__; 586uint32_t ns_datetosecs(const char *cp, int *errp) __LIBC_ABI_PUBLIC__; 587int ns_name_ntol(const u_char *, u_char *, size_t) __LIBC_ABI_PUBLIC__; 588int ns_name_ntop(const u_char *, char *, size_t) __LIBC_ABI_PUBLIC__; 589int ns_name_pton(const char *, u_char *, size_t) __LIBC_ABI_PUBLIC__; 590int ns_name_pton2(const char *, u_char *, size_t, size_t *) __LIBC_HIDDEN__; 591int ns_name_unpack(const u_char *, const u_char *, 592 const u_char *, u_char *, size_t) __LIBC_ABI_PUBLIC__; 593int ns_name_unpack2(const u_char *, const u_char *, 594 const u_char *, u_char *, size_t, 595 size_t *) __LIBC_HIDDEN__; 596int ns_name_pack(const u_char *, u_char *, int, 597 const u_char **, const u_char **) __LIBC_ABI_PUBLIC__; 598int ns_name_uncompress(const u_char *, const u_char *, 599 const u_char *, char *, size_t) __LIBC_ABI_PUBLIC__; 600int ns_name_compress(const char *, u_char *, size_t, 601 const u_char **, const u_char **) __LIBC_ABI_PUBLIC__; 602int ns_name_skip(const u_char **, const u_char *) __LIBC_ABI_PUBLIC__; 603void ns_name_rollback(const u_char *, const u_char **, 604 const u_char **) __LIBC_ABI_PUBLIC__; 605int ns_sign(u_char *, int *, int, int, void *, 606 const u_char *, int, u_char *, int *, time_t) __LIBC_ABI_PUBLIC__; 607int ns_sign2(u_char *, int *, int, int, void *, 608 const u_char *, int, u_char *, int *, time_t, 609 u_char **, u_char **) __LIBC_ABI_PUBLIC__; 610ssize_t ns_name_length(ns_nname_ct, size_t) __LIBC_HIDDEN__; 611int ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t) __LIBC_HIDDEN__; 612int ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int) __LIBC_HIDDEN__; 613int ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int) __LIBC_HIDDEN__; 614int ns_name_labels(ns_nname_ct, size_t) __LIBC_HIDDEN__; 615int ns_sign_tcp(u_char *, int *, int, int, 616 ns_tcp_tsig_state *, int) __LIBC_ABI_PUBLIC__; 617int ns_sign_tcp2(u_char *, int *, int, int, 618 ns_tcp_tsig_state *, int, 619 u_char **, u_char **) __LIBC_ABI_PUBLIC__; 620int ns_sign_tcp_init(void *, const u_char *, int, 621 ns_tcp_tsig_state *) __LIBC_ABI_PUBLIC__; 622u_char *ns_find_tsig(u_char *, u_char *) __LIBC_ABI_PUBLIC__; 623int ns_verify(u_char *, int *, void *, 624 const u_char *, int, u_char *, int *, 625 time_t *, int) __LIBC_ABI_PUBLIC__; 626int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int); 627int ns_verify_tcp_init(void *, const u_char *, int, 628 ns_tcp_tsig_state *) __LIBC_ABI_PUBLIC__; 629int ns_samedomain(const char *, const char *) __LIBC_ABI_PUBLIC__; 630int ns_subdomain(const char *, const char *) __LIBC_ABI_PUBLIC__; 631int ns_makecanon(const char *, char *, size_t) __LIBC_ABI_PUBLIC__; 632int ns_samename(const char *, const char *) __LIBC_ABI_PUBLIC__; 633__END_DECLS 634 635#ifdef BIND_4_COMPAT 636#include <arpa/nameser_compat.h> 637#endif 638 639#endif /* !_ARPA_NAMESER_H_ */ 640