1/* $NetBSD: nameser.h,v 1.19.4.1 2007/05/17 21:25:12 jdc Exp $ */ 2 3/* 4 * Copyright (c) 1983, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32/* 33 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 34 * Copyright (c) 1996-1999 by Internet Software Consortium. 35 * 36 * Permission to use, copy, modify, and distribute this software for any 37 * purpose with or without fee is hereby granted, provided that the above 38 * copyright notice and this permission notice appear in all copies. 39 * 40 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 41 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 42 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 43 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 44 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 45 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 46 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 47 */ 48 49/* 50 * Id: nameser.h,v 1.7.18.1 2005/04/27 05:00:50 sra 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/EfiCdefs.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 19991006 /*%< New interface version stamp. */ 75 76/* 77 * Define constants based on RFC0883, RFC1034, RFC 1035 78 */ 79#define NS_PACKETSZ 512 /*%< default UDP packet size */ 80#define NS_MAXDNAME 1025 /*%< maximum domain name */ 81#define NS_MAXMSG 65535 /*%< maximum message size */ 82#define NS_MAXCDNAME 255 /*%< maximum compressed domain name */ 83#define NS_MAXLABEL 63 /*%< maximum length of domain label */ 84#define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */ 85#define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */ 86#define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */ 87#define NS_INT32SZ 4 /*%< #/bytes of data in a u_int32_t */ 88#define NS_INT16SZ 2 /*%< #/bytes of data in a u_int16_t */ 89#define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */ 90#define NS_INADDRSZ 4 /*%< IPv4 T_A */ 91#define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */ 92#define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */ 93#define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */ 94 95/* 96 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 97 * in synch with it. 98 */ 99typedef enum __ns_sect { 100 ns_s_qd = 0, /*%< Query: Question. */ 101 ns_s_zn = 0, /*%< Update: Zone. */ 102 ns_s_an = 1, /*%< Query: Answer. */ 103 ns_s_pr = 1, /*%< Update: Prerequisites. */ 104 ns_s_ns = 2, /*%< Query: Name servers. */ 105 ns_s_ud = 2, /*%< Update: Update. */ 106 ns_s_ar = 3, /*%< Query|Update: Additional records. */ 107 ns_s_max = 4 108} ns_sect; 109 110/*% 111 * This is a message handle. It is caller allocated and has no dynamic data. 112 * This structure is intended to be opaque to all but ns_parse.c, thus the 113 * leading _'s on the member names. Use the accessor functions, not the _'s. 114 */ 115typedef struct __ns_msg { 116 const u_char *_msg, *_eom; 117 uint16_t _id, _flags, _counts[ns_s_max]; 118 const u_char *_sections[ns_s_max]; 119 ns_sect _sect; 120 int _rrnum; 121 const u_char *_msg_ptr; 122} ns_msg; 123 124/* Private data structure - do not use from outside library. */ 125struct _ns_flagdata { int mask, shift; }; 126extern struct _ns_flagdata _ns_flagdata[]; 127 128/* Accessor macros - this is part of the public interface. */ 129#define ns_msg_getflag(handle, flag) ( \ 130 ((handle)._flags & _ns_flagdata[flag].mask) \ 131 >> _ns_flagdata[flag].shift \ 132 ) 133 134#define ns_msg_id(handle) ((handle)._id + 0) 135#define ns_msg_base(handle) ((handle)._msg + 0) 136#define ns_msg_end(handle) ((handle)._eom + 0) 137#define ns_msg_size(handle) ((size_t)((handle)._eom - (handle)._msg)) 138#define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 139 140/*% 141 * This is a parsed record. It is caller allocated and has no dynamic data. 142 */ 143typedef struct __ns_rr { 144 char name[NS_MAXDNAME]; 145 uint16_t type; 146 uint16_t rr_class; 147 uint32_t ttl; 148 uint16_t rdlength; 149 const u_char * rdata; 150} ns_rr; 151 152/* Accessor macros - this is part of the public interface. */ 153#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 154#define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 155#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 156#define ns_rr_ttl(rr) ((u_long)(rr).ttl + 0) 157#define ns_rr_rdlen(rr) ((size_t)(rr).rdlength + 0) 158#define ns_rr_rdata(rr) ((rr).rdata + 0) 159 160/*% 161 * These don't have to be in the same order as in the packet flags word, 162 * and they can even overlap in some cases, but they will need to be kept 163 * in synch with ns_parse.c:ns_flagdata[]. 164 */ 165typedef enum __ns_flag { 166 ns_f_qr, /*%< Question/Response. */ 167 ns_f_opcode, /*%< Operation code. */ 168 ns_f_aa, /*%< Authoritative Answer. */ 169 ns_f_tc, /*%< Truncation occurred. */ 170 ns_f_rd, /*%< Recursion Desired. */ 171 ns_f_ra, /*%< Recursion Available. */ 172 ns_f_z, /*%< MBZ. */ 173 ns_f_ad, /*%< Authentic Data (DNSSEC). */ 174 ns_f_cd, /*%< Checking Disabled (DNSSEC). */ 175 ns_f_rcode, /*%< Response code. */ 176 ns_f_max 177} ns_flag; 178 179/*% 180 * Currently defined opcodes. 181 */ 182typedef enum __ns_opcode { 183 ns_o_query = 0, /*%< Standard query. */ 184 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */ 185 ns_o_status = 2, /*%< Name server status query (unsupported). */ 186 /* Opcode 3 is undefined/reserved. */ 187 ns_o_notify = 4, /*%< Zone change notification. */ 188 ns_o_update = 5, /*%< Zone update message. */ 189 ns_o_max = 6 190} ns_opcode; 191 192/*% 193 * Currently defined response codes. 194 */ 195typedef enum __ns_rcode { 196 ns_r_noerror = 0, /*%< No error occurred. */ 197 ns_r_formerr = 1, /*%< Format error. */ 198 ns_r_servfail = 2, /*%< Server failure. */ 199 ns_r_nxdomain = 3, /*%< Name error. */ 200 ns_r_notimpl = 4, /*%< Unimplemented. */ 201 ns_r_refused = 5, /*%< Operation refused. */ 202 /* these are for BIND_UPDATE */ 203 ns_r_yxdomain = 6, /*%< Name exists */ 204 ns_r_yxrrset = 7, /*%< RRset exists */ 205 ns_r_nxrrset = 8, /*%< RRset does not exist */ 206 ns_r_notauth = 9, /*%< Not authoritative for zone */ 207 ns_r_notzone = 10, /*%< Zone of record different from zone section */ 208 ns_r_max = 11, 209 /* The following are EDNS extended rcodes */ 210 ns_r_badvers = 16, 211 /* The following are TSIG errors */ 212 ns_r_badsig = 16, 213 ns_r_badkey = 17, 214 ns_r_badtime = 18 215} ns_rcode; 216 217/* BIND_UPDATE */ 218typedef enum __ns_update_operation { 219 ns_uop_delete = 0, 220 ns_uop_add = 1, 221 ns_uop_max = 2 222} ns_update_operation; 223 224/* 225 * This RR-like structure is particular to UPDATE. 226 */ 227struct _ns_updrec { 228 struct _ns_updrec *r_prev; /* prev record */ 229 struct _ns_updrec *r_next; /* next record */ 230 u_int8_t r_section; /* ZONE/PREREQUISITE/UPDATE */ 231 char * r_dname; /* owner of the RR */ 232 u_int16_t r_class; /* class number */ 233 u_int16_t r_type; /* type number */ 234 u_int32_t r_ttl; /* time to live */ 235 u_char * r_data; /* rdata fields as text string */ 236 u_int16_t r_size; /* size of r_data field */ 237 int r_opcode; /* type of operation */ 238 /* following fields for private use by the resolver/server routines */ 239 struct _ns_updrec *r_grpnext; /* next record when grouped */ 240 struct databuf *r_dp; /* databuf to process */ 241 struct databuf *r_deldp; /* databuf's deleted/overwritten */ 242 u_int16_t r_zone; /* zone number on server */ 243}; 244typedef struct _ns_updrec ns_updrec; 245 246/*% 247 * This structure is used for TSIG authenticated messages 248 */ 249struct ns_tsig_key { 250 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 251 unsigned char *data; 252 int len; 253}; 254typedef struct ns_tsig_key ns_tsig_key; 255 256/*% 257 * This structure is used for TSIG authenticated TCP messages 258 */ 259struct ns_tcp_tsig_state { 260 int counter; 261 struct dst_key *key; 262 void *ctx; 263 unsigned char sig[NS_PACKETSZ]; 264 int siglen; 265}; 266typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 267 268#define NS_TSIG_FUDGE 300 269#define NS_TSIG_TCP_COUNT 100 270#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 271 272#define NS_TSIG_ERROR_NO_TSIG -10 273#define NS_TSIG_ERROR_NO_SPACE -11 274#define NS_TSIG_ERROR_FORMERR -12 275 276/*% 277 * Currently defined type values for resources and queries. 278 */ 279typedef enum __ns_type { 280 ns_t_invalid = 0, /*%< Cookie. */ 281 ns_t_a = 1, /*%< Host address. */ 282 ns_t_ns = 2, /*%< Authoritative server. */ 283 ns_t_md = 3, /*%< Mail destination. */ 284 ns_t_mf = 4, /*%< Mail forwarder. */ 285 ns_t_cname = 5, /*%< Canonical name. */ 286 ns_t_soa = 6, /*%< Start of authority zone. */ 287 ns_t_mb = 7, /*%< Mailbox domain name. */ 288 ns_t_mg = 8, /*%< Mail group member. */ 289 ns_t_mr = 9, /*%< Mail rename name. */ 290 ns_t_null = 10, /*%< Null resource record. */ 291 ns_t_wks = 11, /*%< Well known service. */ 292 ns_t_ptr = 12, /*%< Domain name pointer. */ 293 ns_t_hinfo = 13, /*%< Host information. */ 294 ns_t_minfo = 14, /*%< Mailbox information. */ 295 ns_t_mx = 15, /*%< Mail routing information. */ 296 ns_t_txt = 16, /*%< Text strings. */ 297 ns_t_rp = 17, /*%< Responsible person. */ 298 ns_t_afsdb = 18, /*%< AFS cell database. */ 299 ns_t_x25 = 19, /*%< X_25 calling address. */ 300 ns_t_isdn = 20, /*%< ISDN calling address. */ 301 ns_t_rt = 21, /*%< Router. */ 302 ns_t_nsap = 22, /*%< NSAP address. */ 303 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */ 304 ns_t_sig = 24, /*%< Security signature. */ 305 ns_t_key = 25, /*%< Security key. */ 306 ns_t_px = 26, /*%< X.400 mail mapping. */ 307 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */ 308 ns_t_aaaa = 28, /*%< Ip6 Address. */ 309 ns_t_loc = 29, /*%< Location Information. */ 310 ns_t_nxt = 30, /*%< Next domain (security). */ 311 ns_t_eid = 31, /*%< Endpoint identifier. */ 312 ns_t_nimloc = 32, /*%< Nimrod Locator. */ 313 ns_t_srv = 33, /*%< Server Selection. */ 314 ns_t_atma = 34, /*%< ATM Address */ 315 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */ 316 ns_t_kx = 36, /*%< Key Exchange */ 317 ns_t_cert = 37, /*%< Certification record */ 318 ns_t_a6 = 38, /*%< IPv6 address (deprecates AAAA) */ 319 ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */ 320 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */ 321 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */ 322 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */ 323 ns_t_tkey = 249, /*%< Transaction key */ 324 ns_t_tsig = 250, /*%< Transaction signature. */ 325 ns_t_ixfr = 251, /*%< Incremental zone transfer. */ 326 ns_t_axfr = 252, /*%< Transfer zone of authority. */ 327 ns_t_mailb = 253, /*%< Transfer mailbox records. */ 328 ns_t_maila = 254, /*%< Transfer mail agent records. */ 329 ns_t_any = 255, /*%< Wildcard match. */ 330 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */ 331 ns_t_max = 65536 332} ns_type; 333 334/* Exclusively a QTYPE? (not also an RTYPE) */ 335#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 336 (t) == ns_t_mailb || (t) == ns_t_maila) 337/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 338#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 339/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 340#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 341#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 342#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 343 (t) == ns_t_zxfr) 344 345/*% 346 * Values for class field 347 */ 348typedef enum __ns_class { 349 ns_c_invalid = 0, /*%< Cookie. */ 350 ns_c_in = 1, /*%< Internet. */ 351 ns_c_2 = 2, /*%< unallocated/unsupported. */ 352 ns_c_chaos = 3, /*%< MIT Chaos-net. */ 353 ns_c_hs = 4, /*%< MIT Hesiod. */ 354 /* Query class values which do not appear in resource records */ 355 ns_c_none = 254, /*%< for prereq. sections in update requests */ 356 ns_c_any = 255, /*%< Wildcard match. */ 357 ns_c_max = 65536 358} ns_class; 359 360/* DNSSEC constants. */ 361 362typedef enum __ns_key_types { 363 ns_kt_rsa = 1, /*%< key type RSA/MD5 */ 364 ns_kt_dh = 2, /*%< Diffie Hellman */ 365 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */ 366 ns_kt_private = 254 /*%< Private key type starts with OID */ 367} ns_key_types; 368 369typedef enum __ns_cert_types { 370 cert_t_pkix = 1, /*%< PKIX (X.509v3) */ 371 cert_t_spki = 2, /*%< SPKI */ 372 cert_t_pgp = 3, /*%< PGP */ 373 cert_t_url = 253, /*%< URL private type */ 374 cert_t_oid = 254 /*%< OID private type */ 375} ns_cert_types; 376 377/* Flags field of the KEY RR rdata. */ 378#define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */ 379#define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */ 380#define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */ 381#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */ 382#define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */ 383/* The type bits can also be interpreted independently, as single bits: */ 384#define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */ 385#define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */ 386#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 387#define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */ 388#define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */ 389#define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */ 390#define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */ 391#define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */ 392#define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */ 393#define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */ 394#define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */ 395#define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */ 396#define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */ 397#define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */ 398#define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */ 399#define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */ 400#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 401 NS_KEY_RESERVED4 | \ 402 NS_KEY_RESERVED5 | \ 403 NS_KEY_RESERVED8 | \ 404 NS_KEY_RESERVED9 | \ 405 NS_KEY_RESERVED10 | \ 406 NS_KEY_RESERVED11 ) 407#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */ 408 409/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 410#define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */ 411#define NS_ALG_DH 2 /*%< Diffie Hellman KEY */ 412#define NS_ALG_DSA 3 /*%< DSA KEY */ 413#define NS_ALG_DSS NS_ALG_DSA 414#define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */ 415#define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */ 416 417/* Protocol values */ 418/* value 0 is reserved */ 419#define NS_KEY_PROT_TLS 1 420#define NS_KEY_PROT_EMAIL 2 421#define NS_KEY_PROT_DNSSEC 3 422#define NS_KEY_PROT_IPSEC 4 423#define NS_KEY_PROT_ANY 255 424 425/* Signatures */ 426#define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */ 427#define NS_MD5RSA_MAX_BITS 4096 428 /* Total of binary mod and exp */ 429#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 430 /* Max length of text sig block */ 431#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 432#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 433#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 434 435#define NS_DSA_SIG_SIZE 41 436#define NS_DSA_MIN_SIZE 213 437#define NS_DSA_MAX_BYTES 405 438 439/* Offsets into SIG record rdata to find various values */ 440#define NS_SIG_TYPE 0 /*%< Type flags */ 441#define NS_SIG_ALG 2 /*%< Algorithm */ 442#define NS_SIG_LABELS 3 /*%< How many labels in name */ 443#define NS_SIG_OTTL 4 /*%< Original TTL */ 444#define NS_SIG_EXPIR 8 /*%< Expiration time */ 445#define NS_SIG_SIGNED 12 /*%< Signature time */ 446#define NS_SIG_FOOT 16 /*%< Key footprint */ 447#define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */ 448 449/* How RR types are represented as bit-flags in NXT records */ 450#define NS_NXT_BITS 8 451#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 452#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 453#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 454#define NS_NXT_MAX 127 455 456/*% 457 * EDNS0 extended flags, host order. 458 */ 459#define NS_OPT_DNSSEC_OK 0x8000U 460 461/*% 462 * Inline versions of get/put short/long. Pointer is advanced. 463 */ 464#define NS_GET16(s, cp) do { \ 465 const u_char *t_cp = (const u_char *)(cp); \ 466 (s) = ((uint16_t)t_cp[0] << 8) \ 467 | ((uint16_t)t_cp[1]) \ 468 ; \ 469 (cp) += NS_INT16SZ; \ 470} while (/*CONSTCOND*/0) 471 472#define NS_GET32(l, cp) do { \ 473 const u_char *t_cp = (const u_char *)(cp); \ 474 (l) = ((uint32_t)t_cp[0] << 24) \ 475 | ((uint32_t)t_cp[1] << 16) \ 476 | ((uint32_t)t_cp[2] << 8) \ 477 | ((uint32_t)t_cp[3]) \ 478 ; \ 479 (cp) += NS_INT32SZ; \ 480} while (/*CONSTCOND*/0) 481 482#define NS_PUT16(s, cp) do { \ 483 uint32_t t_s = (uint32_t)(s); \ 484 u_char *t_cp = (u_char *)(cp); \ 485 *t_cp++ = (u_char)( t_s >> 8 ); \ 486 *t_cp = (u_char)( t_s ); \ 487 (cp) += NS_INT16SZ; \ 488} while (/*CONSTCOND*/0) 489 490#define NS_PUT32(l, cp) do { \ 491 uint32_t t_l = (uint32_t)(l); \ 492 u_char *t_cp = (u_char *)(cp); \ 493 *t_cp++ = (u_char)( t_l >> 24 ); \ 494 *t_cp++ = (u_char)( t_l >> 16 ); \ 495 *t_cp++ = (u_char)( t_l >> 8 ); \ 496 *t_cp = (u_char)( t_l ); \ 497 (cp) += NS_INT32SZ; \ 498} while (/*CONSTCOND*/0) 499 500/*% 501 * ANSI C identifier hiding for bind's lib/nameser. 502 */ 503#define ns_get16 __ns_get16 504#define ns_get32 __ns_get32 505#define ns_put16 __ns_put16 506#define ns_put32 __ns_put32 507#define ns_initparse __ns_initparse 508#define ns_skiprr __ns_skiprr 509#define ns_parserr __ns_parserr 510#define ns_sprintrr __ns_sprintrr 511#define ns_sprintrrf __ns_sprintrrf 512#define ns_format_ttl __ns_format_ttl 513#define ns_parse_ttl __ns_parse_ttl 514#define ns_datetosecs __ns_datetosecs 515#define ns_name_ntol __ns_name_ntol 516#define ns_name_ntop __ns_name_ntop 517#define ns_name_pton __ns_name_pton 518#define ns_name_unpack __ns_name_unpack 519#define ns_name_pack __ns_name_pack 520#define ns_name_compress __ns_name_compress 521#define ns_name_uncompress __ns_name_uncompress 522#define ns_name_skip __ns_name_skip 523#define ns_name_rollback __ns_name_rollback 524#define ns_sign __ns_sign 525#define ns_sign2 __ns_sign2 526#define ns_sign_tcp __ns_sign_tcp 527#define ns_sign_tcp2 __ns_sign_tcp2 528#define ns_sign_tcp_init __ns_sign_tcp_init 529#define ns_find_tsig __ns_find_tsig 530#define ns_verify __ns_verify 531#define ns_verify_tcp __ns_verify_tcp 532#define ns_verify_tcp_init __ns_verify_tcp_init 533#define ns_samedomain __ns_samedomain 534#define ns_subdomain __ns_subdomain 535#define ns_makecanon __ns_makecanon 536#define ns_samename __ns_samename 537 538__BEGIN_DECLS 539uint16_t ns_get16(const u_char *); 540uint32_t ns_get32(const u_char *); 541void ns_put16(uint16_t, u_char *); 542void ns_put32(uint32_t, u_char *); 543int ns_initparse(const u_char *, int, ns_msg *); 544int ns_skiprr(const u_char *, const u_char *, ns_sect, int); 545int ns_parserr(ns_msg *, ns_sect, int, ns_rr *); 546int ns_sprintrr(const ns_msg *, const ns_rr *, 547 const char *, const char *, char *, size_t); 548int ns_sprintrrf(const u_char *, size_t, const char *, 549 ns_class, ns_type, u_long, const u_char *, 550 size_t, const char *, const char *, 551 char *, size_t); 552int ns_format_ttl(u_long, char *, size_t); 553int ns_parse_ttl(const char *, u_long *); 554uint32_t ns_datetosecs(const char *cp, int *errp); 555int ns_name_ntol(const u_char *, u_char *, size_t); 556int ns_name_ntop(const u_char *, char *, size_t); 557int ns_name_pton(const char *, u_char *, size_t); 558int ns_name_unpack(const u_char *, const u_char *, 559 const u_char *, u_char *, size_t); 560int ns_name_pack(const u_char *, u_char *, int, 561 const u_char **, const u_char **); 562int ns_name_uncompress(const u_char *, const u_char *, 563 const u_char *, char *, size_t); 564int ns_name_compress(const char *, u_char *, size_t, 565 const u_char **, const u_char **); 566int ns_name_skip(const u_char **, const u_char *); 567void ns_name_rollback(const u_char *, const u_char **, 568 const u_char **); 569int ns_sign(u_char *, int *, int, int, void *, 570 const u_char *, int, u_char *, int *, time_t); 571int ns_sign2(u_char *, int *, int, int, void *, 572 const u_char *, int, u_char *, int *, time_t, 573 u_char **, u_char **); 574int ns_sign_tcp(u_char *, int *, int, int, 575 ns_tcp_tsig_state *, int); 576int ns_sign_tcp2(u_char *, int *, int, int, 577 ns_tcp_tsig_state *, int, 578 u_char **, u_char **); 579int ns_sign_tcp_init(void *, const u_char *, int, 580 ns_tcp_tsig_state *); 581u_char *ns_find_tsig(u_char *, u_char *); 582int ns_verify(u_char *, int *, void *, 583 const u_char *, int, u_char *, int *, 584 time_t *, int); 585int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int); 586int ns_verify_tcp_init(void *, const u_char *, int, 587 ns_tcp_tsig_state *); 588int ns_samedomain(const char *, const char *); 589int ns_subdomain(const char *, const char *); 590int ns_makecanon(const char *, char *, size_t); 591int ns_samename(const char *, const char *); 592__END_DECLS 593 594#ifdef BIND_4_COMPAT 595#include <arpa/nameser_compat.h> 596#endif 597 598#endif /* !_ARPA_NAMESER_H_ */ 599