1 /* $NetBSD: nameser.h,v 1.1.1.3 2014/07/12 11:57:57 spz Exp $ */ 2 /* 3 * Copyright (c) 1983, 1989, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * Copyright (c) 2004,2009 by Internet Systems Consortium, Inc. ("ISC") 33 * Copyright (c) 1996-2003 by Internet Software Consortium 34 * 35 * Permission to use, copy, modify, and distribute this software for any 36 * purpose with or without fee is hereby granted, provided that the above 37 * copyright notice and this permission notice appear in all copies. 38 * 39 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 40 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 41 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 42 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 43 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 44 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 45 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 46 * 47 * Internet Systems Consortium, Inc. 48 * 950 Charter Street 49 * Redwood City, CA 94063 50 * <info@isc.org> 51 * https://www.isc.org/ 52 */ 53 54 /* 55 * Id: nameser.h,v 1.7 2009/11/24 02:06:56 sar Exp 56 */ 57 58 #ifndef _ARPA_NAMESER_H_ 59 #define _ARPA_NAMESER_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 19991006 /* New interface version stamp. */ 70 71 /* 72 * Define constants based on RFC 883, RFC 1034, RFC 1035 73 */ 74 #define NS_PACKETSZ 512 /* maximum packet size */ 75 #define NS_MAXDNAME 1025 /* maximum domain name */ 76 #define NS_MAXCDNAME 255 /* maximum compressed domain name */ 77 #define NS_MAXLABEL 63 /* maximum length of domain label */ 78 #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ 79 #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ 80 #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ 81 #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */ 82 #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */ 83 #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */ 84 #define NS_INADDRSZ 4 /* IPv4 T_A */ 85 #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ 86 #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ 87 #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ 88 89 /* 90 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 91 * in synch with it. 92 */ 93 typedef enum __ns_sect { 94 ns_s_qd = 0, /* Query: Question. */ 95 ns_s_zn = 0, /* Update: Zone. */ 96 ns_s_an = 1, /* Query: Answer. */ 97 ns_s_pr = 1, /* Update: Prerequisites. */ 98 ns_s_ns = 2, /* Query: Name servers. */ 99 ns_s_ud = 2, /* Update: Update. */ 100 ns_s_ar = 3, /* Query|Update: Additional records. */ 101 ns_s_max = 4 102 } ns_sect; 103 104 /* 105 * This is a message handle. It is caller allocated and has no dynamic data. 106 * This structure is intended to be opaque to all but ns_parse.c, thus the 107 * leading _'s on the member names. Use the accessor functions, not the _'s. 108 */ 109 typedef struct __ns_msg { 110 const u_int8_t *_msg, *_eom; 111 u_int16_t _id, _flags, _counts[ns_s_max]; 112 const u_int8_t *_sections[ns_s_max]; 113 ns_sect _sect; 114 int _rrnum; 115 const u_int8_t *_ptr; 116 } ns_msg; 117 118 /* Private data structure - do not use from outside library. */ 119 struct _ns_flagdata { int mask, shift; }; 120 extern struct _ns_flagdata _ns_flagdata[]; 121 122 /* Accessor macros - this is part of the public interface. */ 123 #define ns_msg_getflag(handle, flag) ( \ 124 ((handle)._flags & _ns_flagdata[flag].mask) \ 125 >> _ns_flagdata[flag].shift \ 126 ) 127 #define ns_msg_id(handle) ((handle)._id + 0) 128 #define ns_msg_base(handle) ((handle)._msg + 0) 129 #define ns_msg_end(handle) ((handle)._eom + 0) 130 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) 131 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 132 133 /* 134 * This is a parsed record. It is caller allocated and has no dynamic data. 135 */ 136 typedef struct __ns_rr { 137 char name[NS_MAXDNAME]; 138 u_int16_t type; 139 u_int16_t rr_class; 140 u_int32_t ttl; 141 u_int16_t rdlength; 142 const u_int8_t *rdata; 143 } ns_rr; 144 145 /* Accessor macros - this is part of the public interface. */ 146 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 147 #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 148 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 149 #define ns_rr_ttl(rr) ((rr).ttl + 0) 150 #define ns_rr_rdlen(rr) ((rr).rdlength + 0) 151 #define ns_rr_rdata(rr) ((rr).rdata + 0) 152 153 /* 154 * These don't have to be in the same order as in the packet flags word, 155 * and they can even overlap in some cases, but they will need to be kept 156 * in synch with ns_parse.c:ns_flagdata[]. 157 */ 158 typedef enum __ns_flag { 159 ns_f_qr, /* Question/Response. */ 160 ns_f_opcode, /* Operation code. */ 161 ns_f_aa, /* Authoritative Answer. */ 162 ns_f_tc, /* Truncation occurred. */ 163 ns_f_rd, /* Recursion Desired. */ 164 ns_f_ra, /* Recursion Available. */ 165 ns_f_z, /* MBZ. */ 166 ns_f_ad, /* Authentic Data (DNSSEC). */ 167 ns_f_cd, /* Checking Disabled (DNSSEC). */ 168 ns_f_rcode, /* Response code. */ 169 ns_f_max 170 } ns_flag; 171 172 /* 173 * Currently defined opcodes. 174 */ 175 typedef enum __ns_opcode { 176 ns_o_query = 0, /* Standard query. */ 177 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ 178 ns_o_status = 2, /* Name server status query (unsupported). */ 179 /* Opcode 3 is undefined/reserved. */ 180 ns_o_notify = 4, /* Zone change notification. */ 181 ns_o_update = 5, /* Zone update message. */ 182 ns_o_max = 6 183 } ns_opcode; 184 185 /* 186 * Currently defined response codes. 187 */ 188 typedef enum __ns_rcode { 189 ns_r_noerror = 0, /* No error occurred. */ 190 ns_r_formerr = 1, /* Format error. */ 191 ns_r_servfail = 2, /* Server failure. */ 192 ns_r_nxdomain = 3, /* Name error. */ 193 ns_r_notimpl = 4, /* Unimplemented. */ 194 ns_r_refused = 5, /* Operation refused. */ 195 /* these are for BIND_UPDATE */ 196 ns_r_yxdomain = 6, /* Name exists */ 197 ns_r_yxrrset = 7, /* RRset exists */ 198 ns_r_nxrrset = 8, /* RRset does not exist */ 199 ns_r_notauth = 9, /* Not authoritative for zone */ 200 ns_r_notzone = 10, /* Zone of record different from zone section */ 201 ns_r_max = 11, 202 /* The following are TSIG extended errors */ 203 ns_r_badsig = 16, 204 ns_r_badkey = 17, 205 ns_r_badtime = 18 206 } ns_rcode; 207 208 /* BIND_UPDATE */ 209 typedef enum __ns_update_operation { 210 ns_uop_delete = 0, 211 ns_uop_add = 1, 212 ns_uop_max = 2 213 } ns_update_operation; 214 215 /* 216 * This structure is used for TSIG authenticated messages 217 */ 218 struct ns_tsig_key { 219 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 220 unsigned char *data; 221 unsigned len; 222 }; 223 typedef struct ns_tsig_key ns_tsig_key; 224 225 /* 226 * This structure is used for TSIG authenticated TCP messages 227 */ 228 struct ns_tcp_tsig_state { 229 int counter; 230 struct dst_key *key; 231 void *ctx; 232 unsigned char sig[NS_PACKETSZ]; 233 unsigned siglen; 234 }; 235 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 236 237 #define NS_TSIG_FUDGE 300 238 #define NS_TSIG_TCP_COUNT 100 239 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 240 241 #define NS_TSIG_ERROR_NO_TSIG -10 242 #define NS_TSIG_ERROR_NO_SPACE -11 243 #define NS_TSIG_ERROR_FORMERR -12 244 245 /* 246 * Currently defined type values for resources and queries. 247 */ 248 typedef enum __ns_type { 249 ns_t_invalid = 0, /* Cookie. */ 250 ns_t_a = 1, /* Host address. */ 251 ns_t_ns = 2, /* Authoritative server. */ 252 ns_t_md = 3, /* Mail destination. */ 253 ns_t_mf = 4, /* Mail forwarder. */ 254 ns_t_cname = 5, /* Canonical name. */ 255 ns_t_soa = 6, /* Start of authority zone. */ 256 ns_t_mb = 7, /* Mailbox domain name. */ 257 ns_t_mg = 8, /* Mail group member. */ 258 ns_t_mr = 9, /* Mail rename name. */ 259 ns_t_null = 10, /* Null resource record. */ 260 ns_t_wks = 11, /* Well known service. */ 261 ns_t_ptr = 12, /* Domain name pointer. */ 262 ns_t_hinfo = 13, /* Host information. */ 263 ns_t_minfo = 14, /* Mailbox information. */ 264 ns_t_mx = 15, /* Mail routing information. */ 265 ns_t_txt = 16, /* Text strings. */ 266 ns_t_rp = 17, /* Responsible person. */ 267 ns_t_afsdb = 18, /* AFS cell database. */ 268 ns_t_x25 = 19, /* X_25 calling address. */ 269 ns_t_isdn = 20, /* ISDN calling address. */ 270 ns_t_rt = 21, /* Router. */ 271 ns_t_nsap = 22, /* NSAP address. */ 272 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 273 ns_t_sig = 24, /* Security signature. */ 274 ns_t_key = 25, /* Security key. */ 275 ns_t_px = 26, /* X.400 mail mapping. */ 276 ns_t_gpos = 27, /* Geographical position (withdrawn). */ 277 ns_t_aaaa = 28, /* Ip6 Address. */ 278 ns_t_loc = 29, /* Location Information. */ 279 ns_t_nxt = 30, /* Next domain (security). */ 280 ns_t_eid = 31, /* Endpoint identifier. */ 281 ns_t_nimloc = 32, /* Nimrod Locator. */ 282 ns_t_srv = 33, /* Server Selection. */ 283 ns_t_atma = 34, /* ATM Address */ 284 ns_t_naptr = 35, /* Naming Authority PoinTeR */ 285 ns_t_kx = 36, /* Key Exchange */ 286 ns_t_cert = 37, /* Certification record */ 287 ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ 288 ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ 289 ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 290 ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 291 ns_t_tsig = 250, /* Transaction signature. */ 292 ns_t_ixfr = 251, /* Incremental zone transfer. */ 293 ns_t_axfr = 252, /* Transfer zone of authority. */ 294 ns_t_mailb = 253, /* Transfer mailbox records. */ 295 ns_t_maila = 254, /* Transfer mail agent records. */ 296 ns_t_any = 255, /* Wildcard match. */ 297 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 298 ns_t_max = 65536 299 } ns_type; 300 301 /* Exclusively a QTYPE? (not also an RTYPE) */ 302 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 303 (t) == ns_t_mailb || (t) == ns_t_maila) 304 /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 305 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 306 /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 307 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 308 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 309 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 310 (t) == ns_t_zxfr) 311 312 /* 313 * Values for class field 314 */ 315 typedef enum __ns_class { 316 ns_c_invalid = 0, /* Cookie. */ 317 ns_c_in = 1, /* Internet. */ 318 ns_c_2 = 2, /* unallocated/unsupported. */ 319 ns_c_chaos = 3, /* MIT Chaos-net. */ 320 ns_c_hs = 4, /* MIT Hesiod. */ 321 /* Query class values which do not appear in resource records */ 322 ns_c_none = 254, /* for prereq. sections in update requests */ 323 ns_c_any = 255, /* Wildcard match. */ 324 ns_c_max = 65536 325 } ns_class; 326 327 /* DNSSEC constants. */ 328 329 typedef enum __ns_key_types { 330 ns_kt_rsa = 1, /* key type RSA/MD5 */ 331 ns_kt_dh = 2, /* Diffie Hellman */ 332 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ 333 ns_kt_private = 254 /* Private key type starts with OID */ 334 } ns_key_types; 335 336 typedef enum __ns_cert_types { 337 cert_t_pkix = 1, /* PKIX (X.509v3) */ 338 cert_t_spki = 2, /* SPKI */ 339 cert_t_pgp = 3, /* PGP */ 340 cert_t_url = 253, /* URL private type */ 341 cert_t_oid = 254 /* OID private type */ 342 } ns_cert_types; 343 344 /* Flags field of the KEY RR rdata. */ 345 #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ 346 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ 347 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ 348 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ 349 #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ 350 /* The type bits can also be interpreted independently, as single bits: */ 351 #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ 352 #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ 353 #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 354 #define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */ 355 #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ 356 #define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */ 357 #define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */ 358 #define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */ 359 #define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */ 360 #define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */ 361 #define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */ 362 #define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */ 363 #define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */ 364 #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ 365 #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ 366 #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ 367 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 368 NS_KEY_RESERVED4 | \ 369 NS_KEY_RESERVED5 | \ 370 NS_KEY_RESERVED8 | \ 371 NS_KEY_RESERVED9 | \ 372 NS_KEY_RESERVED10 | \ 373 NS_KEY_RESERVED11 ) 374 #define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */ 375 376 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 377 #define NS_ALG_MD5RSA 1 /* MD5 with RSA */ 378 #define NS_ALG_DH 2 /* Diffie Hellman KEY */ 379 #define NS_ALG_DSA 3 /* DSA KEY */ 380 #define NS_ALG_DSS NS_ALG_DSA 381 #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ 382 #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ 383 384 /* Protocol values */ 385 /* value 0 is reserved */ 386 #define NS_KEY_PROT_TLS 1 387 #define NS_KEY_PROT_EMAIL 2 388 #define NS_KEY_PROT_DNSSEC 3 389 #define NS_KEY_PROT_IPSEC 4 390 #define NS_KEY_PROT_ANY 255 391 392 /* Signatures */ 393 #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ 394 #define NS_MD5RSA_MAX_BITS 2552 395 /* Total of binary mod and exp */ 396 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 397 /* Max length of text sig block */ 398 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 399 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 400 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 401 402 #define NS_DSA_SIG_SIZE 41 403 #define NS_DSA_MIN_SIZE 213 404 #define NS_DSA_MAX_BYTES 405 405 406 /* Offsets into SIG record rdata to find various values */ 407 #define NS_SIG_TYPE 0 /* Type flags */ 408 #define NS_SIG_ALG 2 /* Algorithm */ 409 #define NS_SIG_LABELS 3 /* How many labels in name */ 410 #define NS_SIG_OTTL 4 /* Original TTL */ 411 #define NS_SIG_EXPIR 8 /* Expiration time */ 412 #define NS_SIG_SIGNED 12 /* Signature time */ 413 #define NS_SIG_FOOT 16 /* Key footprint */ 414 #define NS_SIG_SIGNER 18 /* Domain name of who signed it */ 415 416 /* How RR types are represented as bit-flags in NXT records */ 417 #define NS_NXT_BITS 8 418 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 419 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 420 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 421 #define NS_NXT_MAX 127 422 423 /* 424 * Inline versions of get/put short/long. Pointer is advanced. 425 */ 426 #define NS_GET16(s, cp) do { \ 427 register u_int8_t *t_cp = (u_int8_t *)(cp); \ 428 (s) = ((u_int16_t)t_cp[0] << 8) \ 429 | ((u_int16_t)t_cp[1]) \ 430 ; \ 431 (cp) += NS_INT16SZ; \ 432 } while (0) 433 434 #define NS_GET32(l, cp) do { \ 435 register u_int8_t *t_cp = (u_int8_t *)(cp); \ 436 (l) = ((u_int32_t)t_cp[0] << 24) \ 437 | ((u_int32_t)t_cp[1] << 16) \ 438 | ((u_int32_t)t_cp[2] << 8) \ 439 | ((u_int32_t)t_cp[3]) \ 440 ; \ 441 (cp) += NS_INT32SZ; \ 442 } while (0) 443 444 #define NS_PUT16(s, cp) do { \ 445 register u_int16_t t_s = (u_int16_t)(s); \ 446 register u_int8_t *t_cp = (u_int8_t *)(cp); \ 447 *t_cp++ = t_s >> 8; \ 448 *t_cp = t_s; \ 449 (cp) += NS_INT16SZ; \ 450 } while (0) 451 452 #define NS_PUT32(l, cp) do { \ 453 register u_int32_t t_l = (u_int32_t)(l); \ 454 register u_int8_t *t_cp = (u_int8_t *)(cp); \ 455 *t_cp++ = t_l >> 24; \ 456 *t_cp++ = t_l >> 16; \ 457 *t_cp++ = t_l >> 8; \ 458 *t_cp = t_l; \ 459 (cp) += NS_INT32SZ; \ 460 } while (0) 461 462 #include <arpa/nameser_compat.h> 463 464 #endif /* !_ARPA_NAMESER_H_ */ 465