1/* 2 * Copyright 2006-2012 Haiku, Inc. All Rights Reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 6/* 7 * Portions Copyright (C) 2004, 2005, 2008, 2009 Internet Systems Consortium, Inc. ("ISC") 8 * Portions Copyright (C) 1996-2003 Internet Software Consortium. 9 * 10 * Permission to use, copy, modify, and/or distribute this software for any 11 * purpose with or without fee is hereby granted, provided that the above 12 * copyright notice and this permission notice appear in all copies. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 15 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 16 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 17 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 18 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 19 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 20 * PERFORMANCE OF THIS SOFTWARE. 21 */ 22 23/* 24 * Copyright (c) 1983, 1989, 1993 25 * The Regents of the University of California. All rights reserved. 26 * 27 * Redistribution and use in source and binary forms, with or without 28 * modification, are permitted provided that the following conditions 29 * are met: 30 * 1. Redistributions of source code must retain the above copyright 31 * notice, this list of conditions and the following disclaimer. 32 * 2. Redistributions in binary form must reproduce the above copyright 33 * notice, this list of conditions and the following disclaimer in the 34 * documentation and/or other materials provided with the distribution. 35 * 3. All advertising materials mentioning features or use of this software 36 * must display the following acknowledgement: 37 * This product includes software developed by the University of 38 * California, Berkeley and its contributors. 39 * 4. Neither the name of the University nor the names of its contributors 40 * may be used to endorse or promote products derived from this software 41 * without specific prior written permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 */ 55#ifndef _ARPA_NAMESER_H_ 56#define _ARPA_NAMESER_H_ 57 58 59#include <stdint.h> 60#include <sys/param.h> 61#include <sys/cdefs.h> 62#include <sys/types.h> 63 64 65/* 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. 71 */ 72#define __NAMESER 20090302 /* New interface version stamp. */ 73 74/* 75 * Define constants based on RFC 883, RFC 1034, RFC 1035 76 */ 77#define NS_PACKETSZ 512 /* default UDP packet size */ 78#define NS_MAXDNAME 1025 /* maximum domain name */ 79#define NS_MAXMSG 65535 /* maximum message size */ 80#define NS_MAXCDNAME 255 /* maximum compressed domain name */ 81#define NS_MAXLABEL 63 /* maximum length of domain label */ 82#define NS_MAXLABELS 128 /* theoretical max #/labels per domain name */ 83#define NS_MAXNNAME 256 /* maximum uncompressed (binary) domain name */ 84#define NS_MAXPADDR 40 85#define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ 86#define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ 87#define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ 88#define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */ 89#define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */ 90#define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */ 91#define NS_INADDRSZ 4 /* IPv4 T_A */ 92#define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ 93#define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ 94#define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ 95 96/* 97 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 98 * in synch with it. 99 */ 100typedef enum __ns_sect { 101 ns_s_qd = 0, /* Query: Question. */ 102 ns_s_zn = 0, /* Update: Zone. */ 103 ns_s_an = 1, /* Query: Answer. */ 104 ns_s_pr = 1, /* Update: Prerequisites. */ 105 ns_s_ns = 2, /* Query: Name servers. */ 106 ns_s_ud = 2, /* Update: Update. */ 107 ns_s_ar = 3, /* Query|Update: Additional records. */ 108 ns_s_max = 4 109} ns_sect; 110 111/* 112 * Network name (compressed or not) type. Equivalent to a pointer when used 113 * in a function prototype. Can be const'd. 114 */ 115typedef u_char ns_nname[NS_MAXNNAME]; 116typedef const u_char *ns_nname_ct; 117typedef u_char *ns_nname_t; 118 119struct ns_namemap { ns_nname_ct base; int len; }; 120typedef struct ns_namemap *ns_namemap_t; 121typedef const struct ns_namemap *ns_namemap_ct; 122 123/* 124 * This is a message handle. It is caller allocated and has no dynamic data. 125 * This structure is intended to be opaque to all but ns_parse.c, thus the 126 * leading _'s on the member names. Use the accessor functions, not the _'s. 127 */ 128typedef struct __ns_msg { 129 const u_char *_msg; 130 const u_char *_eom; 131 u_int16_t _id; 132 u_int16_t _flags; 133 u_int16_t _counts[ns_s_max]; 134 const u_char *_sections[ns_s_max]; 135 ns_sect _sect; 136 int _rrnum; 137 const u_char *_msg_ptr; 138} ns_msg; 139 140/* 141 * This is a newmsg handle, used when constructing new messages with 142 * ns_newmsg_init(), et al. 143 */ 144struct ns_newmsg { 145 ns_msg msg; 146 const u_char *dnptrs[25]; 147 const u_char **lastdnptr; 148}; 149typedef struct ns_newmsg ns_newmsg; 150 151/* Private data structure - do not use from outside library. */ 152struct _ns_flagdata { int mask, shift; }; 153extern struct _ns_flagdata _ns_flagdata[]; 154 155/* Accessor macros - this is part of the public interface. */ 156 157#define ns_msg_id(handle) ((handle)._id + 0) 158#define ns_msg_base(handle) ((handle)._msg + 0) 159#define ns_msg_end(handle) ((handle)._eom + 0) 160#define ns_msg_size(handle) ((handle)._eom - (handle)._msg) 161#define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 162 163/* 164 * This is a parsed record. It is caller allocated and has no dynamic data. 165 */ 166typedef struct __ns_rr { 167 char name[NS_MAXDNAME]; 168 u_int16_t type; 169 u_int16_t rr_class; 170 u_int32_t ttl; 171 u_int16_t rdlength; 172 const u_char *rdata; 173} ns_rr; 174 175/* 176 * Same thing, but using uncompressed network binary names, and real C types. 177 */ 178typedef struct __ns_rr2 { 179 ns_nname nname; 180 size_t nnamel; 181 int type; 182 int rr_class; 183 u_int ttl; 184 int rdlength; 185 const u_char *rdata; 186} ns_rr2; 187 188/* Accessor macros - this is part of the public interface. */ 189#define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 190#define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname) 191#define ns_rr_nnamel(rr) ((rr).nnamel + 0) 192#define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 193#define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 194#define ns_rr_ttl(rr) ((rr).ttl + 0) 195#define ns_rr_rdlen(rr) ((rr).rdlength + 0) 196#define ns_rr_rdata(rr) ((rr).rdata + 0) 197 198/* 199 * These don't have to be in the same order as in the packet flags word, 200 * and they can even overlap in some cases, but they will need to be kept 201 * in synch with ns_parse.c:ns_flagdata[]. 202 */ 203typedef enum __ns_flag { 204 ns_f_qr, /* Question/Response. */ 205 ns_f_opcode, /* Operation code. */ 206 ns_f_aa, /* Authoritative Answer. */ 207 ns_f_tc, /* Truncation occurred. */ 208 ns_f_rd, /* Recursion Desired. */ 209 ns_f_ra, /* Recursion Available. */ 210 ns_f_z, /* MBZ. */ 211 ns_f_ad, /* Authentic Data (DNSSEC). */ 212 ns_f_cd, /* Checking Disabled (DNSSEC). */ 213 ns_f_rcode, /* Response code. */ 214 ns_f_max 215} ns_flag; 216 217/* 218 * Currently defined opcodes. 219 */ 220typedef enum __ns_opcode { 221 ns_o_query = 0, /* Standard query. */ 222 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ 223 ns_o_status = 2, /* Name server status query (unsupported). */ 224 /* Opcode 3 is undefined/reserved. */ 225 ns_o_notify = 4, /* Zone change notification. */ 226 ns_o_update = 5, /* Zone update message. */ 227 ns_o_max = 6 228} ns_opcode; 229 230/* 231 * Currently defined response codes. 232 */ 233typedef enum __ns_rcode { 234 ns_r_noerror = 0, /* No error occurred. */ 235 ns_r_formerr = 1, /* Format error. */ 236 ns_r_servfail = 2, /* Server failure. */ 237 ns_r_nxdomain = 3, /* Name error. */ 238 ns_r_notimpl = 4, /* Unimplemented. */ 239 ns_r_refused = 5, /* Operation refused. */ 240 /* these are for BIND_UPDATE */ 241 ns_r_yxdomain = 6, /* Name exists */ 242 ns_r_yxrrset = 7, /* RRset exists */ 243 ns_r_nxrrset = 8, /* RRset does not exist */ 244 ns_r_notauth = 9, /* Not authoritative for zone */ 245 ns_r_notzone = 10, /* Zone of record different from zone section */ 246 ns_r_max = 11, 247 /* The following are EDNS extended rcodes */ 248 ns_r_badvers = 16, 249 /* The following are TSIG errors */ 250 ns_r_badsig = 16, 251 ns_r_badkey = 17, 252 ns_r_badtime = 18 253} ns_rcode; 254 255/* BIND_UPDATE */ 256typedef enum __ns_update_operation { 257 ns_uop_delete = 0, 258 ns_uop_add = 1, 259 ns_uop_max = 2 260} ns_update_operation; 261 262/* 263 * This structure is used for TSIG authenticated messages 264 */ 265struct ns_tsig_key { 266 char name[NS_MAXDNAME]; 267 char alg[NS_MAXDNAME]; 268 unsigned char *data; 269 int len; 270}; 271typedef struct ns_tsig_key ns_tsig_key; 272 273/* 274 * This structure is used for TSIG authenticated TCP messages 275 */ 276struct ns_tcp_tsig_state { 277 int counter; 278 struct dst_key *key; 279 void *ctx; 280 unsigned char sig[NS_PACKETSZ]; 281 int siglen; 282}; 283typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 284 285#define NS_TSIG_FUDGE 300 286#define NS_TSIG_TCP_COUNT 100 287#define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 288 289#define NS_TSIG_ERROR_NO_TSIG -10 290#define NS_TSIG_ERROR_NO_SPACE -11 291#define NS_TSIG_ERROR_FORMERR -12 292 293/* 294 * Currently defined type values for resources and queries. 295 */ 296typedef enum __ns_type { 297 ns_t_invalid = 0, /* Cookie. */ 298 ns_t_a = 1, /* Host address. */ 299 ns_t_ns = 2, /* Authoritative server. */ 300 ns_t_md = 3, /* Mail destination. */ 301 ns_t_mf = 4, /* Mail forwarder. */ 302 ns_t_cname = 5, /* Canonical name. */ 303 ns_t_soa = 6, /* Start of authority zone. */ 304 ns_t_mb = 7, /* Mailbox domain name. */ 305 ns_t_mg = 8, /* Mail group member. */ 306 ns_t_mr = 9, /* Mail rename name. */ 307 ns_t_null = 10, /* Null resource record. */ 308 ns_t_wks = 11, /* Well known service. */ 309 ns_t_ptr = 12, /* Domain name pointer. */ 310 ns_t_hinfo = 13, /* Host information. */ 311 ns_t_minfo = 14, /* Mailbox information. */ 312 ns_t_mx = 15, /* Mail routing information. */ 313 ns_t_txt = 16, /* Text strings. */ 314 ns_t_rp = 17, /* Responsible person. */ 315 ns_t_afsdb = 18, /* AFS cell database. */ 316 ns_t_x25 = 19, /* X_25 calling address. */ 317 ns_t_isdn = 20, /* ISDN calling address. */ 318 ns_t_rt = 21, /* Router. */ 319 ns_t_nsap = 22, /* NSAP address. */ 320 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 321 ns_t_sig = 24, /* Security signature. */ 322 ns_t_key = 25, /* Security key. */ 323 ns_t_px = 26, /* X.400 mail mapping. */ 324 ns_t_gpos = 27, /* Geographical position (withdrawn). */ 325 ns_t_aaaa = 28, /* Ip6 Address. */ 326 ns_t_loc = 29, /* Location Information. */ 327 ns_t_nxt = 30, /* Next domain (security). */ 328 ns_t_eid = 31, /* Endpoint identifier. */ 329 ns_t_nimloc = 32, /* Nimrod Locator. */ 330 ns_t_srv = 33, /* Server Selection. */ 331 ns_t_atma = 34, /* ATM Address */ 332 ns_t_naptr = 35, /* Naming Authority PoinTeR */ 333 ns_t_kx = 36, /* Key Exchange */ 334 ns_t_cert = 37, /* Certification record */ 335 ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ 336 ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ 337 ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 338 ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 339 ns_t_apl = 42, /* Address prefix list (RFC 3123) */ 340 ns_t_ds = 43, /* Delegation Signer */ 341 ns_t_sshfp = 44, /* SSH Fingerprint */ 342 ns_t_ipseckey = 45, /* IPSEC Key */ 343 ns_t_rrsig = 46, /* RRset Signature */ 344 ns_t_nsec = 47, /* Negative security */ 345 ns_t_dnskey = 48, /* DNS Key */ 346 ns_t_dhcid = 49, /* Dynamic host configuratin identifier */ 347 ns_t_nsec3 = 50, /* Negative security type 3 */ 348 ns_t_nsec3param = 51, /* Negative security type 3 parameters */ 349 ns_t_hip = 55, /* Host Identity Protocol */ 350 ns_t_spf = 99, /* Sender Policy Framework */ 351 ns_t_tkey = 249, /* Transaction key */ 352 ns_t_tsig = 250, /* Transaction signature. */ 353 ns_t_ixfr = 251, /* Incremental zone transfer. */ 354 ns_t_axfr = 252, /* Transfer zone of authority. */ 355 ns_t_mailb = 253, /* Transfer mailbox records. */ 356 ns_t_maila = 254, /* Transfer mail agent records. */ 357 ns_t_any = 255, /* Wildcard match. */ 358 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 359 ns_t_dlv = 32769, /* DNSSEC look-aside validatation. */ 360 ns_t_max = 65536 361} ns_type; 362 363/* Exclusively a QTYPE? (not also an RTYPE) */ 364#define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 365 (t) == ns_t_mailb || (t) == ns_t_maila) 366/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 367#define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 368/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 369#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 370#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 371#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 372 (t) == ns_t_zxfr) 373 374/* 375 * Values for class field 376 */ 377typedef enum __ns_class { 378 ns_c_invalid = 0, /* Cookie. */ 379 ns_c_in = 1, /* Internet. */ 380 ns_c_2 = 2, /* unallocated/unsupported. */ 381 ns_c_chaos = 3, /* MIT Chaos-net. */ 382 ns_c_hs = 4, /* MIT Hesiod. */ 383 /* Query class values which do not appear in resource records */ 384 ns_c_none = 254, /* for prereq. sections in update requests */ 385 ns_c_any = 255, /* Wildcard match. */ 386 ns_c_max = 65536 387} ns_class; 388 389/* DNSSEC constants. */ 390 391typedef enum __ns_key_types { 392 ns_kt_rsa = 1, /* key type RSA/MD5 */ 393 ns_kt_dh = 2, /* Diffie Hellman */ 394 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ 395 ns_kt_private = 254 /* Private key type starts with OID */ 396} ns_key_types; 397 398typedef enum __ns_cert_types { 399 cert_t_pkix = 1, /* PKIX (X.509v3) */ 400 cert_t_spki = 2, /* SPKI */ 401 cert_t_pgp = 3, /* PGP */ 402 cert_t_url = 253, /* URL private type */ 403 cert_t_oid = 254 /* OID private type */ 404} ns_cert_types; 405 406/* Flags field of the KEY RR rdata. */ 407#define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ 408#define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ 409#define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ 410#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ 411#define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ 412/* The type bits can also be interpreted independently, as single bits: */ 413#define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ 414#define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ 415#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 416#define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */ 417#define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ 418#define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */ 419#define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */ 420#define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */ 421#define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */ 422#define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */ 423#define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */ 424#define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */ 425#define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */ 426#define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ 427#define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ 428#define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ 429#define NS_KEY_RESERVED_BITMASK (NS_KEY_RESERVED2 | NS_KEY_RESERVED4 \ 430 | NS_KEY_RESERVED5 | NS_KEY_RESERVED8 | NS_KEY_RESERVED9 \ 431 | NS_KEY_RESERVED10 | NS_KEY_RESERVED11) 432#define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */ 433 434/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 435#define NS_ALG_MD5RSA 1 /* MD5 with RSA */ 436#define NS_ALG_DH 2 /* Diffie Hellman KEY */ 437#define NS_ALG_DSA 3 /* DSA KEY */ 438#define NS_ALG_DSS NS_ALG_DSA 439#define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ 440#define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ 441 442/* Protocol values */ 443/* value 0 is reserved */ 444#define NS_KEY_PROT_TLS 1 445#define NS_KEY_PROT_EMAIL 2 446#define NS_KEY_PROT_DNSSEC 3 447#define NS_KEY_PROT_IPSEC 4 448#define NS_KEY_PROT_ANY 255 449 450/* Signatures */ 451#define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ 452#define NS_MD5RSA_MAX_BITS 4096 453 /* Total of binary mod and exp */ 454#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 455 /* Max length of text sig block */ 456#define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 457#define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 458#define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 459 460#define NS_DSA_SIG_SIZE 41 461#define NS_DSA_MIN_SIZE 213 462#define NS_DSA_MAX_BYTES 405 463 464/* Offsets into SIG record rdata to find various values */ 465#define NS_SIG_TYPE 0 /* Type flags */ 466#define NS_SIG_ALG 2 /* Algorithm */ 467#define NS_SIG_LABELS 3 /* How many labels in name */ 468#define NS_SIG_OTTL 4 /* Original TTL */ 469#define NS_SIG_EXPIR 8 /* Expiration time */ 470#define NS_SIG_SIGNED 12 /* Signature time */ 471#define NS_SIG_FOOT 16 /* Key footprint */ 472#define NS_SIG_SIGNER 18 /* Domain name of who signed it */ 473 474/* How RR types are represented as bit-flags in NXT records */ 475#define NS_NXT_BITS 8 476#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 477#define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 478#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 479#define NS_NXT_MAX 127 480 481/* 482 * EDNS0 extended flags, host order. 483 */ 484#define NS_OPT_DNSSEC_OK 0x8000U 485#define NS_OPT_NSID 3 486 487/* 488 * Inline versions of get/put short/long. Pointer is advanced. 489 */ 490#define NS_GET16(s, cp) do { \ 491 register const u_char *t_cp = (const u_char *)(cp); \ 492 (s) = ((u_int16_t)t_cp[0] << 8) \ 493 | ((u_int16_t)t_cp[1]) \ 494 ; \ 495 (cp) += NS_INT16SZ; \ 496} while (0) 497 498#define NS_GET32(l, cp) do { \ 499 register const u_char *t_cp = (const u_char *)(cp); \ 500 (l) = ((u_int32_t)t_cp[0] << 24) \ 501 | ((u_int32_t)t_cp[1] << 16) \ 502 | ((u_int32_t)t_cp[2] << 8) \ 503 | ((u_int32_t)t_cp[3]) \ 504 ; \ 505 (cp) += NS_INT32SZ; \ 506} while (0) 507 508#define NS_PUT16(s, cp) do { \ 509 register u_int16_t t_s = (u_int16_t)(s); \ 510 register u_char *t_cp = (u_char *)(cp); \ 511 *t_cp++ = t_s >> 8; \ 512 *t_cp = t_s; \ 513 (cp) += NS_INT16SZ; \ 514} while (0) 515 516#define NS_PUT32(l, cp) do { \ 517 register u_int32_t t_l = (u_int32_t)(l); \ 518 register u_char *t_cp = (u_char *)(cp); \ 519 *t_cp++ = t_l >> 24; \ 520 *t_cp++ = t_l >> 16; \ 521 *t_cp++ = t_l >> 8; \ 522 *t_cp = t_l; \ 523 (cp) += NS_INT32SZ; \ 524} while (0) 525 526/* 527 * ANSI C identifier hiding for bind's lib/nameser. 528 */ 529#define ns_msg_getflag __ns_msg_getflag 530#define ns_get16 __ns_get16 531#define ns_get32 __ns_get32 532#define ns_put16 __ns_put16 533#define ns_put32 __ns_put32 534#define ns_initparse __ns_initparse 535#define ns_skiprr __ns_skiprr 536#define ns_parserr __ns_parserr 537#define ns_parserr2 __ns_parserr2 538#define ns_sprintrr __ns_sprintrr 539#define ns_sprintrrf __ns_sprintrrf 540#define ns_format_ttl __ns_format_ttl 541#define ns_parse_ttl __ns_parse_ttl 542#define ns_datetosecs __ns_datetosecs 543#define ns_name_ntol __ns_name_ntol 544#define ns_name_ntop __ns_name_ntop 545#define ns_name_pton __ns_name_pton 546#define ns_name_pton2 __ns_name_pton2 547#define ns_name_unpack __ns_name_unpack 548#define ns_name_unpack2 __ns_name_unpack2 549#define ns_name_pack __ns_name_pack 550#define ns_name_compress __ns_name_compress 551#define ns_name_uncompress __ns_name_uncompress 552#define ns_name_skip __ns_name_skip 553#define ns_name_rollback __ns_name_rollback 554#define ns_name_length __ns_name_length 555#define ns_name_eq __ns_name_eq 556#define ns_name_owned __ns_name_owned 557#define ns_name_map __ns_name_map 558#define ns_name_labels __ns_name_labels 559#define ns_sign __ns_sign 560#define ns_sign2 __ns_sign2 561#define ns_sign_tcp __ns_sign_tcp 562#define ns_sign_tcp2 __ns_sign_tcp2 563#define ns_sign_tcp_init __ns_sign_tcp_init 564#define ns_find_tsig __ns_find_tsig 565#define ns_verify __ns_verify 566#define ns_verify_tcp __ns_verify_tcp 567#define ns_verify_tcp_init __ns_verify_tcp_init 568#define ns_samedomain __ns_samedomain 569#define ns_subdomain __ns_subdomain 570#define ns_makecanon __ns_makecanon 571#define ns_samename __ns_samename 572#define ns_newmsg_init __ns_newmsg_init 573#define ns_newmsg_copy __ns_newmsg_copy 574#define ns_newmsg_id __ns_newmsg_id 575#define ns_newmsg_flag __ns_newmsg_flag 576#define ns_newmsg_q __ns_newmsg_q 577#define ns_newmsg_rr __ns_newmsg_rr 578#define ns_newmsg_done __ns_newmsg_done 579#define ns_rdata_unpack __ns_rdata_unpack 580#define ns_rdata_equal __ns_rdata_equal 581#define ns_rdata_refers __ns_rdata_refers 582 583 584#ifdef __cplusplus 585extern "C" { 586#endif 587 588int ns_msg_getflag(ns_msg, int); 589u_int ns_get16(const u_char *); 590u_long ns_get32(const u_char *); 591void ns_put16(u_int, u_char *); 592void ns_put32(u_long, u_char *); 593int ns_initparse(const u_char *, int, ns_msg *); 594int ns_skiprr(const u_char *, const u_char *, ns_sect, int); 595int ns_parserr(ns_msg *, ns_sect, int, ns_rr *); 596int ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *); 597int ns_sprintrr(const ns_msg *, const ns_rr *, 598 const char *, const char *, char *, size_t); 599int ns_sprintrrf(const u_char *, size_t, const char *, 600 ns_class, ns_type, u_long, const u_char *, 601 size_t, const char *, const char *, 602 char *, size_t); 603int ns_format_ttl(u_long, char *, size_t); 604int ns_parse_ttl(const char *, u_long *); 605u_int32_t ns_datetosecs(const char *cp, int *errp); 606int ns_name_ntol(const u_char *, u_char *, size_t); 607int ns_name_ntop(const u_char *, char *, size_t); 608int ns_name_pton(const char *, u_char *, size_t); 609int ns_name_pton2(const char *, u_char *, size_t, size_t *); 610int ns_name_unpack(const u_char *, const u_char *, 611 const u_char *, u_char *, size_t); 612int ns_name_unpack2(const u_char *, const u_char *, 613 const u_char *, u_char *, size_t, size_t *); 614int ns_name_pack(const u_char *, u_char *, int, 615 const u_char **, const u_char **); 616int ns_name_uncompress(const u_char *, const u_char *, 617 const u_char *, char *, size_t); 618int ns_name_compress(const char *, u_char *, size_t, 619 const u_char **, const u_char **); 620int ns_name_skip(const u_char **, const u_char *); 621void ns_name_rollback(const u_char *, const u_char **, const u_char **); 622ssize_t ns_name_length(ns_nname_ct nname, size_t nameSize); 623int ns_name_eq(ns_nname_ct a, size_t aLength, ns_nname_ct b, 624 size_t bLength); 625int ns_name_owned(ns_namemap_ct a, int aLength, ns_namemap_ct b, 626 int bLength); 627int ns_name_map(ns_nname_ct nname, size_t nameLength, ns_namemap_t map, 628 int mapSize); 629int ns_name_labels(ns_nname_ct, size_t); 630int ns_sign(u_char *, int *, int, int, void *, 631 const u_char *, int, u_char *, int *, time_t); 632int ns_sign2(u_char *, int *, int, int, void *, 633 const u_char *, int, u_char *, int *, time_t, 634 u_char **, u_char **); 635int ns_sign_tcp(u_char *, int *, int, int, 636 ns_tcp_tsig_state *, int); 637int ns_sign_tcp2(u_char *, int *, int, int, 638 ns_tcp_tsig_state *, int, 639 u_char **, u_char **); 640int ns_sign_tcp_init(void *, const u_char *, int, 641 ns_tcp_tsig_state *); 642u_char *ns_find_tsig(u_char *, u_char *); 643int ns_verify(u_char *, int *, void *, 644 const u_char *, int, u_char *, int *, 645 time_t *, int); 646int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int); 647int ns_verify_tcp_init(void *, const u_char *, int, 648 ns_tcp_tsig_state *); 649int ns_samedomain(const char *, const char *); 650int ns_subdomain(const char *, const char *); 651int ns_makecanon(const char *, char *, size_t); 652int ns_samename(const char *, const char *); 653int ns_newmsg_init(u_char *buffer, size_t bufsiz, ns_newmsg *); 654int ns_newmsg_copy(ns_newmsg *, ns_msg *); 655void ns_newmsg_id(ns_newmsg *handle, u_int16_t id); 656void ns_newmsg_flag(ns_newmsg *handle, ns_flag flag, u_int value); 657int ns_newmsg_q(ns_newmsg *handle, ns_nname_ct qname, ns_type qtype, 658 ns_class qclass); 659int ns_newmsg_rr(ns_newmsg *handle, ns_sect sect, ns_nname_ct name, 660 ns_type type, ns_class rr_class, u_int32_t ttl, u_int16_t rdlen, 661 const u_char *rdata); 662size_t ns_newmsg_done(ns_newmsg *handle); 663ssize_t ns_rdata_unpack(const u_char *, const u_char *, ns_type, const u_char *, 664 size_t, u_char *, size_t); 665int ns_rdata_equal(ns_type, const u_char *, size_t, const u_char *, size_t); 666int ns_rdata_refers(ns_type, const u_char *, size_t, const u_char *); 667 668#ifdef __cplusplus 669} 670#endif 671 672#include <arpa/nameser_compat.h> 673 674#endif /* _ARPA_NAMESER_H_ */ 675