1 /*- 2 * SPDX-License-Identifier: (ISC AND BSD-3-Clause) 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 * $FreeBSD$ 52 */ 53 54 #ifndef _ARPA_NAMESER_H_ 55 #define _ARPA_NAMESER_H_ 56 57 /*! \file */ 58 59 #define BIND_4_COMPAT 60 61 #include <sys/param.h> 62 #include <sys/types.h> 63 #include <sys/cdefs.h> 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 73 #define __NAMESER 20090302 /*%< New interface version stamp. */ 74 /* 75 * Define constants based on RFC0883, RFC1034, RFC 1035 76 */ 77 #define NS_PACKETSZ 512 /*%< default UDP packet size */ 78 #define NS_MAXDNAME 1025 /*%< maximum domain name (presentation format)*/ 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 (sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff") 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 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 97 * in synch with it. 98 */ 99 typedef 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 * Network name (compressed or not) type. Equivalent to a pointer when used 112 * in a function prototype. Can be const'd. 113 */ 114 typedef u_char ns_nname[NS_MAXNNAME]; 115 typedef const u_char *ns_nname_ct; 116 typedef u_char *ns_nname_t; 117 118 struct ns_namemap { ns_nname_ct base; int len; }; 119 typedef struct ns_namemap *ns_namemap_t; 120 typedef const struct ns_namemap *ns_namemap_ct; 121 122 /*% 123 * This is a message handle. It is caller allocated and has no dynamic data. 124 * This structure is intended to be opaque to all but ns_parse.c, thus the 125 * leading _'s on the member names. Use the accessor functions, not the _'s. 126 */ 127 typedef struct __ns_msg { 128 const u_char *_msg, *_eom; 129 u_int16_t _id, _flags, _counts[ns_s_max]; 130 const u_char *_sections[ns_s_max]; 131 ns_sect _sect; 132 int _rrnum; 133 const u_char *_msg_ptr; 134 } ns_msg; 135 136 /* Private data structure - do not use from outside library. */ 137 struct _ns_flagdata { int mask, shift; }; 138 extern struct _ns_flagdata _ns_flagdata[]; 139 140 /* Accessor macros - this is part of the public interface. */ 141 142 #define ns_msg_id(handle) ((handle)._id + 0) 143 #define ns_msg_base(handle) ((handle)._msg + 0) 144 #define ns_msg_end(handle) ((handle)._eom + 0) 145 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) 146 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 147 148 /*% 149 * This is a parsed record. It is caller allocated and has no dynamic data. 150 */ 151 typedef struct __ns_rr { 152 char name[NS_MAXDNAME]; 153 u_int16_t type; 154 u_int16_t rr_class; 155 u_int32_t ttl; 156 u_int16_t rdlength; 157 const u_char * rdata; 158 } ns_rr; 159 160 /* 161 * Same thing, but using uncompressed network binary names, and real C types. 162 */ 163 typedef struct __ns_rr2 { 164 ns_nname nname; 165 size_t nnamel; 166 int type; 167 int rr_class; 168 u_int ttl; 169 int rdlength; 170 const u_char * rdata; 171 } ns_rr2; 172 173 /* Accessor macros - this is part of the public interface. */ 174 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 175 #define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname) 176 #define ns_rr_nnamel(rr) ((rr).nnamel + 0) 177 #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 178 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 179 #define ns_rr_ttl(rr) ((rr).ttl + 0) 180 #define ns_rr_rdlen(rr) ((rr).rdlength + 0) 181 #define ns_rr_rdata(rr) ((rr).rdata + 0) 182 183 /*% 184 * These don't have to be in the same order as in the packet flags word, 185 * and they can even overlap in some cases, but they will need to be kept 186 * in synch with ns_parse.c:ns_flagdata[]. 187 */ 188 typedef enum __ns_flag { 189 ns_f_qr, /*%< Question/Response. */ 190 ns_f_opcode, /*%< Operation code. */ 191 ns_f_aa, /*%< Authoritative Answer. */ 192 ns_f_tc, /*%< Truncation occurred. */ 193 ns_f_rd, /*%< Recursion Desired. */ 194 ns_f_ra, /*%< Recursion Available. */ 195 ns_f_z, /*%< MBZ. */ 196 ns_f_ad, /*%< Authentic Data (DNSSEC). */ 197 ns_f_cd, /*%< Checking Disabled (DNSSEC). */ 198 ns_f_rcode, /*%< Response code. */ 199 ns_f_max 200 } ns_flag; 201 202 /*% 203 * Currently defined opcodes. 204 */ 205 typedef enum __ns_opcode { 206 ns_o_query = 0, /*%< Standard query. */ 207 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */ 208 ns_o_status = 2, /*%< Name server status query (unsupported). */ 209 /* Opcode 3 is undefined/reserved. */ 210 ns_o_notify = 4, /*%< Zone change notification. */ 211 ns_o_update = 5, /*%< Zone update message. */ 212 ns_o_max = 6 213 } ns_opcode; 214 215 /*% 216 * Currently defined response codes. 217 */ 218 typedef enum __ns_rcode { 219 ns_r_noerror = 0, /*%< No error occurred. */ 220 ns_r_formerr = 1, /*%< Format error. */ 221 ns_r_servfail = 2, /*%< Server failure. */ 222 ns_r_nxdomain = 3, /*%< Name error. */ 223 ns_r_notimpl = 4, /*%< Unimplemented. */ 224 ns_r_refused = 5, /*%< Operation refused. */ 225 /* these are for BIND_UPDATE */ 226 ns_r_yxdomain = 6, /*%< Name exists */ 227 ns_r_yxrrset = 7, /*%< RRset exists */ 228 ns_r_nxrrset = 8, /*%< RRset does not exist */ 229 ns_r_notauth = 9, /*%< Not authoritative for zone */ 230 ns_r_notzone = 10, /*%< Zone of record different from zone section */ 231 ns_r_max = 11, 232 /* The following are EDNS extended rcodes */ 233 ns_r_badvers = 16, 234 /* The following are TSIG errors */ 235 ns_r_badsig = 16, 236 ns_r_badkey = 17, 237 ns_r_badtime = 18 238 } ns_rcode; 239 240 /* BIND_UPDATE */ 241 typedef enum __ns_update_operation { 242 ns_uop_delete = 0, 243 ns_uop_add = 1, 244 ns_uop_max = 2 245 } ns_update_operation; 246 247 /*% 248 * This structure is used for TSIG authenticated messages 249 */ 250 struct ns_tsig_key { 251 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 252 unsigned char *data; 253 int len; 254 }; 255 typedef struct ns_tsig_key ns_tsig_key; 256 257 /*% 258 * This structure is used for TSIG authenticated TCP messages 259 */ 260 struct ns_tcp_tsig_state { 261 int counter; 262 struct dst_key *key; 263 void *ctx; 264 unsigned char sig[NS_PACKETSZ]; 265 int siglen; 266 }; 267 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 268 269 #define NS_TSIG_FUDGE 300 270 #define NS_TSIG_TCP_COUNT 100 271 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 272 273 #define NS_TSIG_ERROR_NO_TSIG -10 274 #define NS_TSIG_ERROR_NO_SPACE -11 275 #define NS_TSIG_ERROR_FORMERR -12 276 277 /*% 278 * Currently defined type values for resources and queries. 279 */ 280 typedef enum __ns_type { 281 ns_t_invalid = 0, /*%< Cookie. */ 282 ns_t_a = 1, /*%< Host address. */ 283 ns_t_ns = 2, /*%< Authoritative server. */ 284 ns_t_md = 3, /*%< Mail destination. */ 285 ns_t_mf = 4, /*%< Mail forwarder. */ 286 ns_t_cname = 5, /*%< Canonical name. */ 287 ns_t_soa = 6, /*%< Start of authority zone. */ 288 ns_t_mb = 7, /*%< Mailbox domain name. */ 289 ns_t_mg = 8, /*%< Mail group member. */ 290 ns_t_mr = 9, /*%< Mail rename name. */ 291 ns_t_null = 10, /*%< Null resource record. */ 292 ns_t_wks = 11, /*%< Well known service. */ 293 ns_t_ptr = 12, /*%< Domain name pointer. */ 294 ns_t_hinfo = 13, /*%< Host information. */ 295 ns_t_minfo = 14, /*%< Mailbox information. */ 296 ns_t_mx = 15, /*%< Mail routing information. */ 297 ns_t_txt = 16, /*%< Text strings. */ 298 ns_t_rp = 17, /*%< Responsible person. */ 299 ns_t_afsdb = 18, /*%< AFS cell database. */ 300 ns_t_x25 = 19, /*%< X_25 calling address. */ 301 ns_t_isdn = 20, /*%< ISDN calling address. */ 302 ns_t_rt = 21, /*%< Router. */ 303 ns_t_nsap = 22, /*%< NSAP address. */ 304 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */ 305 ns_t_sig = 24, /*%< Security signature. */ 306 ns_t_key = 25, /*%< Security key. */ 307 ns_t_px = 26, /*%< X.400 mail mapping. */ 308 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */ 309 ns_t_aaaa = 28, /*%< IPv6 Address. */ 310 ns_t_loc = 29, /*%< Location Information. */ 311 ns_t_nxt = 30, /*%< Next domain (security). */ 312 ns_t_eid = 31, /*%< Endpoint identifier. */ 313 ns_t_nimloc = 32, /*%< Nimrod Locator. */ 314 ns_t_srv = 33, /*%< Server Selection. */ 315 ns_t_atma = 34, /*%< ATM Address */ 316 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */ 317 ns_t_kx = 36, /*%< Key Exchange */ 318 ns_t_cert = 37, /*%< Certification record */ 319 ns_t_a6 = 38, /*%< IPv6 address (experimental) */ 320 ns_t_dname = 39, /*%< Non-terminal DNAME */ 321 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */ 322 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */ 323 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */ 324 ns_t_ds = 43, /*%< Delegation Signer */ 325 ns_t_sshfp = 44, /*%< SSH Fingerprint */ 326 ns_t_ipseckey = 45, /*%< IPSEC Key */ 327 ns_t_rrsig = 46, /*%< RRset Signature */ 328 ns_t_nsec = 47, /*%< Negative security */ 329 ns_t_dnskey = 48, /*%< DNS Key */ 330 ns_t_dhcid = 49, /*%< Dynamic host configuratin identifier */ 331 ns_t_nsec3 = 50, /*%< Negative security type 3 */ 332 ns_t_nsec3param = 51, /*%< Negative security type 3 parameters */ 333 ns_t_hip = 55, /*%< Host Identity Protocol */ 334 ns_t_spf = 99, /*%< Sender Policy Framework */ 335 ns_t_tkey = 249, /*%< Transaction key */ 336 ns_t_tsig = 250, /*%< Transaction signature. */ 337 ns_t_ixfr = 251, /*%< Incremental zone transfer. */ 338 ns_t_axfr = 252, /*%< Transfer zone of authority. */ 339 ns_t_mailb = 253, /*%< Transfer mailbox records. */ 340 ns_t_maila = 254, /*%< Transfer mail agent records. */ 341 ns_t_any = 255, /*%< Wildcard match. */ 342 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */ 343 ns_t_dlv = 32769, /*%< DNSSEC look-aside validatation. */ 344 ns_t_max = 65536 345 } ns_type; 346 347 /* Exclusively a QTYPE? (not also an RTYPE) */ 348 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 349 (t) == ns_t_mailb || (t) == ns_t_maila) 350 /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 351 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 352 /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 353 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 354 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 355 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 356 (t) == ns_t_zxfr) 357 358 /*% 359 * Values for class field 360 */ 361 typedef enum __ns_class { 362 ns_c_invalid = 0, /*%< Cookie. */ 363 ns_c_in = 1, /*%< Internet. */ 364 ns_c_2 = 2, /*%< unallocated/unsupported. */ 365 ns_c_chaos = 3, /*%< MIT Chaos-net. */ 366 ns_c_hs = 4, /*%< MIT Hesiod. */ 367 /* Query class values which do not appear in resource records */ 368 ns_c_none = 254, /*%< for prereq. sections in update requests */ 369 ns_c_any = 255, /*%< Wildcard match. */ 370 ns_c_max = 65536 371 } ns_class; 372 373 /* DNSSEC constants. */ 374 375 typedef enum __ns_key_types { 376 ns_kt_rsa = 1, /*%< key type RSA/MD5 */ 377 ns_kt_dh = 2, /*%< Diffie Hellman */ 378 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */ 379 ns_kt_private = 254 /*%< Private key type starts with OID */ 380 } ns_key_types; 381 382 typedef enum __ns_cert_types { 383 cert_t_pkix = 1, /*%< PKIX (X.509v3) */ 384 cert_t_spki = 2, /*%< SPKI */ 385 cert_t_pgp = 3, /*%< PGP */ 386 cert_t_url = 253, /*%< URL private type */ 387 cert_t_oid = 254 /*%< OID private type */ 388 } ns_cert_types; 389 390 /* Flags field of the KEY RR rdata. */ 391 #define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */ 392 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */ 393 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */ 394 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */ 395 #define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */ 396 /* The type bits can also be interpreted independently, as single bits: */ 397 #define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */ 398 #define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */ 399 #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 400 #define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */ 401 #define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */ 402 #define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */ 403 #define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */ 404 #define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */ 405 #define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */ 406 #define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */ 407 #define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */ 408 #define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */ 409 #define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */ 410 #define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */ 411 #define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */ 412 #define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */ 413 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 414 NS_KEY_RESERVED4 | \ 415 NS_KEY_RESERVED5 | \ 416 NS_KEY_RESERVED8 | \ 417 NS_KEY_RESERVED9 | \ 418 NS_KEY_RESERVED10 | \ 419 NS_KEY_RESERVED11 ) 420 #define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */ 421 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 422 #define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */ 423 #define NS_ALG_DH 2 /*%< Diffie Hellman KEY */ 424 #define NS_ALG_DSA 3 /*%< DSA KEY */ 425 #define NS_ALG_DSS NS_ALG_DSA 426 #define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */ 427 #define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */ 428 /* Protocol values */ 429 /* value 0 is reserved */ 430 #define NS_KEY_PROT_TLS 1 431 #define NS_KEY_PROT_EMAIL 2 432 #define NS_KEY_PROT_DNSSEC 3 433 #define NS_KEY_PROT_IPSEC 4 434 #define NS_KEY_PROT_ANY 255 435 436 /* Signatures */ 437 #define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */ 438 #define NS_MD5RSA_MAX_BITS 4096 439 /* Total of binary mod and exp */ 440 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 441 /* Max length of text sig block */ 442 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 443 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 444 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 445 446 #define NS_DSA_SIG_SIZE 41 447 #define NS_DSA_MIN_SIZE 213 448 #define NS_DSA_MAX_BYTES 405 449 450 /* Offsets into SIG record rdata to find various values */ 451 #define NS_SIG_TYPE 0 /*%< Type flags */ 452 #define NS_SIG_ALG 2 /*%< Algorithm */ 453 #define NS_SIG_LABELS 3 /*%< How many labels in name */ 454 #define NS_SIG_OTTL 4 /*%< Original TTL */ 455 #define NS_SIG_EXPIR 8 /*%< Expiration time */ 456 #define NS_SIG_SIGNED 12 /*%< Signature time */ 457 #define NS_SIG_FOOT 16 /*%< Key footprint */ 458 #define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */ 459 /* How RR types are represented as bit-flags in NXT records */ 460 #define NS_NXT_BITS 8 461 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 462 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 463 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 464 #define NS_NXT_MAX 127 465 466 /*% 467 * EDNS0 extended flags and option codes, host order. 468 */ 469 #define NS_OPT_DNSSEC_OK 0x8000U 470 #define NS_OPT_NSID 3 471 472 /*% 473 * Inline versions of get/put short/long. Pointer is advanced. 474 */ 475 #define NS_GET16(s, cp) do { \ 476 register const u_char *t_cp = (const u_char *)(cp); \ 477 (s) = ((u_int16_t)t_cp[0] << 8) \ 478 | ((u_int16_t)t_cp[1]) \ 479 ; \ 480 (cp) += NS_INT16SZ; \ 481 } while (0) 482 483 #define NS_GET32(l, cp) do { \ 484 register const u_char *t_cp = (const u_char *)(cp); \ 485 (l) = ((u_int32_t)t_cp[0] << 24) \ 486 | ((u_int32_t)t_cp[1] << 16) \ 487 | ((u_int32_t)t_cp[2] << 8) \ 488 | ((u_int32_t)t_cp[3]) \ 489 ; \ 490 (cp) += NS_INT32SZ; \ 491 } while (0) 492 493 #define NS_PUT16(s, cp) do { \ 494 register u_int16_t t_s = (u_int16_t)(s); \ 495 register u_char *t_cp = (u_char *)(cp); \ 496 *t_cp++ = t_s >> 8; \ 497 *t_cp = t_s; \ 498 (cp) += NS_INT16SZ; \ 499 } while (0) 500 501 #define NS_PUT32(l, cp) do { \ 502 register u_int32_t t_l = (u_int32_t)(l); \ 503 register u_char *t_cp = (u_char *)(cp); \ 504 *t_cp++ = t_l >> 24; \ 505 *t_cp++ = t_l >> 16; \ 506 *t_cp++ = t_l >> 8; \ 507 *t_cp = t_l; \ 508 (cp) += NS_INT32SZ; \ 509 } while (0) 510 511 /*% 512 * ANSI C identifier hiding for bind's lib/nameser. 513 */ 514 #define ns_msg_getflag __ns_msg_getflag 515 #define ns_get16 __ns_get16 516 #define ns_get32 __ns_get32 517 #define ns_put16 __ns_put16 518 #define ns_put32 __ns_put32 519 #define ns_initparse __ns_initparse 520 #define ns_skiprr __ns_skiprr 521 #define ns_parserr __ns_parserr 522 #define ns_parserr2 __ns_parserr2 523 #define ns_sprintrr __ns_sprintrr 524 #define ns_sprintrrf __ns_sprintrrf 525 #define ns_format_ttl __ns_format_ttl 526 #define ns_parse_ttl __ns_parse_ttl 527 #if 0 528 #define ns_datetosecs __ns_datetosecs 529 #endif 530 #define ns_name_ntol __ns_name_ntol 531 #define ns_name_ntop __ns_name_ntop 532 #define ns_name_pton __ns_name_pton 533 #define ns_name_pton2 __ns_name_pton2 534 #define ns_name_unpack __ns_name_unpack 535 #define ns_name_unpack2 __ns_name_unpack2 536 #define ns_name_pack __ns_name_pack 537 #define ns_name_compress __ns_name_compress 538 #define ns_name_uncompress __ns_name_uncompress 539 #define ns_name_skip __ns_name_skip 540 #define ns_name_rollback __ns_name_rollback 541 #define ns_name_length __ns_name_length 542 #define ns_name_eq __ns_name_eq 543 #define ns_name_owned __ns_name_owned 544 #define ns_name_map __ns_name_map 545 #define ns_name_labels __ns_name_labels 546 #if 0 547 #define ns_sign __ns_sign 548 #define ns_sign2 __ns_sign2 549 #define ns_sign_tcp __ns_sign_tcp 550 #define ns_sign_tcp2 __ns_sign_tcp2 551 #define ns_sign_tcp_init __ns_sign_tcp_init 552 #define ns_find_tsig __ns_find_tsig 553 #define ns_verify __ns_verify 554 #define ns_verify_tcp __ns_verify_tcp 555 #define ns_verify_tcp_init __ns_verify_tcp_init 556 #endif 557 #define ns_samedomain __ns_samedomain 558 #if 0 559 #define ns_subdomain __ns_subdomain 560 #endif 561 #define ns_makecanon __ns_makecanon 562 #define ns_samename __ns_samename 563 564 __BEGIN_DECLS 565 int ns_msg_getflag(ns_msg, int); 566 u_int ns_get16(const u_char *); 567 u_long ns_get32(const u_char *); 568 void ns_put16(u_int, u_char *); 569 void ns_put32(u_long, u_char *); 570 int ns_initparse(const u_char *, int, ns_msg *); 571 int ns_skiprr(const u_char *, const u_char *, ns_sect, int); 572 int ns_parserr(ns_msg *, ns_sect, int, ns_rr *); 573 int ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *); 574 int ns_sprintrr(const ns_msg *, const ns_rr *, 575 const char *, const char *, char *, size_t); 576 int ns_sprintrrf(const u_char *, size_t, const char *, 577 ns_class, ns_type, u_long, const u_char *, 578 size_t, const char *, const char *, 579 char *, size_t); 580 int ns_format_ttl(u_long, char *, size_t); 581 int ns_parse_ttl(const char *, u_long *); 582 #if 0 583 u_int32_t ns_datetosecs(const char *cp, int *errp); 584 #endif 585 int ns_name_ntol(const u_char *, u_char *, size_t); 586 int ns_name_ntop(const u_char *, char *, size_t); 587 int ns_name_pton(const char *, u_char *, size_t); 588 int ns_name_pton2(const char *, u_char *, size_t, size_t *); 589 int ns_name_unpack(const u_char *, const u_char *, 590 const u_char *, u_char *, size_t); 591 int ns_name_unpack2(const u_char *, const u_char *, 592 const u_char *, u_char *, size_t, 593 size_t *); 594 int ns_name_pack(const u_char *, u_char *, int, 595 const u_char **, const u_char **); 596 int ns_name_uncompress(const u_char *, const u_char *, 597 const u_char *, char *, size_t); 598 int ns_name_compress(const char *, u_char *, size_t, 599 const u_char **, const u_char **); 600 int ns_name_skip(const u_char **, const u_char *); 601 void ns_name_rollback(const u_char *, const u_char **, 602 const u_char **); 603 ssize_t ns_name_length(ns_nname_ct, size_t); 604 int ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t); 605 int ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int); 606 int ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int); 607 int ns_name_labels(ns_nname_ct, size_t); 608 #if 0 609 int ns_sign(u_char *, int *, int, int, void *, 610 const u_char *, int, u_char *, int *, time_t); 611 int ns_sign2(u_char *, int *, int, int, void *, 612 const u_char *, int, u_char *, int *, time_t, 613 u_char **, u_char **); 614 int ns_sign_tcp(u_char *, int *, int, int, 615 ns_tcp_tsig_state *, int); 616 int ns_sign_tcp2(u_char *, int *, int, int, 617 ns_tcp_tsig_state *, int, 618 u_char **, u_char **); 619 int ns_sign_tcp_init(void *, const u_char *, int, 620 ns_tcp_tsig_state *); 621 u_char *ns_find_tsig(u_char *, u_char *); 622 int ns_verify(u_char *, int *, void *, 623 const u_char *, int, u_char *, int *, 624 time_t *, int); 625 int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int); 626 int ns_verify_tcp_init(void *, const u_char *, int, 627 ns_tcp_tsig_state *); 628 #endif 629 int ns_samedomain(const char *, const char *); 630 #if 0 631 int ns_subdomain(const char *, const char *); 632 #endif 633 int ns_makecanon(const char *, char *, size_t); 634 int ns_samename(const char *, const char *); 635 __END_DECLS 636 637 #ifdef BIND_4_COMPAT 638 #include <arpa/nameser_compat.h> 639 #endif 640 641 #endif /* !_ARPA_NAMESER_H_ */ 642 /*! \file */ 643