1 /* $NetBSD: nameser.h,v 1.25 2009/04/12 17:07:34 christos Exp $ */ 2 3 /* 4 * Portions Copyright (C) 2004, 2005, 2008, 2009 Internet Systems Consortium, Inc. ("ISC") 5 * Portions Copyright (C) 1996-2003 Internet Software Consortium. 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* 21 * Copyright (c) 1983, 1989, 1993 22 * The Regents of the University of California. All rights reserved. 23 * 24 * Redistribution and use in source and binary forms, with or without 25 * modification, are permitted provided that the following conditions 26 * are met: 27 * 1. Redistributions of source code must retain the above copyright 28 * notice, this list of conditions and the following disclaimer. 29 * 2. Redistributions in binary form must reproduce the above copyright 30 * notice, this list of conditions and the following disclaimer in the 31 * documentation and/or other materials provided with the distribution. 32 * 3. Neither the name of the University nor the names of its contributors 33 * may be used to endorse or promote products derived from this software 34 * without specific prior written permission. 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 37 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 39 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 40 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 41 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 42 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 44 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 45 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 46 * SUCH DAMAGE. 47 */ 48 49 /* 50 * Id: nameser.h,v 1.16 2009/03/03 01:52:48 each Exp 51 */ 52 53 #ifndef _ARPA_NAMESER_H_ 54 #define _ARPA_NAMESER_H_ 55 56 #define BIND_4_COMPAT 57 58 #include <sys/types.h> 59 #include <sys/cdefs.h> 60 61 /* 62 * Revision information. This is the release date in YYYYMMDD format. 63 * It can change every day so the right thing to do with it is use it 64 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not 65 * compare for equality; rather, use it to determine whether your libbind.a 66 * contains a new enough lib/nameser/ to support the feature you need. 67 */ 68 69 #define __NAMESER 20090302 /*%< New interface version stamp. */ 70 71 /* 72 * Define constants based on RFC0883, RFC1034, RFC 1035 73 */ 74 #define NS_PACKETSZ 512 /* default UDP packet size */ 75 #define NS_MAXDNAME 1025 /* maximum domain name (presentation format)*/ 76 #define NS_MAXMSG 65535 /* maximum message size */ 77 #define NS_MAXCDNAME 255 /* maximum compressed domain name */ 78 #define NS_MAXLABEL 63 /* maximum length of domain label */ 79 #define NS_MAXLABELS 128 /* theoretical max #/labels per domain name */ 80 #define NS_MAXNNAME 256 /* maximum uncompressed (binary) domain name*/ 81 #define NS_MAXPADDR (sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff") 82 #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ 83 #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ 84 #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ 85 #define NS_INT32SZ 4 /* #/bytes of data in a uint32_t */ 86 #define NS_INT16SZ 2 /* #/bytes of data in a uint16_t */ 87 #define NS_INT8SZ 1 /* #/bytes of data in a uint8_t */ 88 #define NS_INADDRSZ 4 /* IPv4 T_A */ 89 #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ 90 #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ 91 #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ 92 93 /* 94 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 95 * in synch with it. 96 */ 97 typedef enum __ns_sect { 98 ns_s_qd = 0, /* Query: Question. */ 99 ns_s_zn = 0, /* Update: Zone. */ 100 ns_s_an = 1, /* Query: Answer. */ 101 ns_s_pr = 1, /* Update: Prerequisites. */ 102 ns_s_ns = 2, /* Query: Name servers. */ 103 ns_s_ud = 2, /* Update: Update. */ 104 ns_s_ar = 3, /* Query|Update: Additional records. */ 105 ns_s_max = 4 106 } ns_sect; 107 108 /* 109 * Network name (compressed or not) type. Equivilent to a pointer when used 110 * in a function prototype. Can be const'd. 111 */ 112 typedef u_char ns_nname[NS_MAXNNAME]; 113 typedef const u_char *ns_nname_ct; 114 typedef u_char *ns_nname_t; 115 116 #pragma clang diagnostic push 117 #pragma clang diagnostic ignored "-Wnullability-completeness" 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 uint16_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 * This is a newmsg handle, used when constructing new messages with 137 * ns_newmsg_init, et al. 138 */ 139 struct ns_newmsg { 140 ns_msg msg; 141 const u_char *dnptrs[25]; 142 const u_char **lastdnptr; 143 }; 144 typedef struct ns_newmsg ns_newmsg; 145 146 /* Accessor macros - this is part of the public interface. */ 147 148 #define ns_msg_id(handle) ((handle)._id + 0) 149 #define ns_msg_base(handle) ((handle)._msg + 0) 150 #define ns_msg_end(handle) ((handle)._eom + 0) 151 #define ns_msg_size(handle) ((size_t)((handle)._eom - (handle)._msg)) 152 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 153 154 /* 155 * This is a parsed record. It is caller allocated and has no dynamic data. 156 */ 157 typedef struct __ns_rr { 158 char name[NS_MAXDNAME]; 159 uint16_t type; 160 uint16_t rr_class; 161 uint32_t ttl; 162 uint16_t rdlength; 163 const u_char * rdata; 164 } ns_rr; 165 166 /* 167 * Same thing, but using uncompressed network binary names, and real C types. 168 */ 169 typedef struct __ns_rr2 { 170 ns_nname nname; 171 size_t nnamel; 172 int type; 173 int rr_class; 174 u_int ttl; 175 int rdlength; 176 const u_char * rdata; 177 } ns_rr2; 178 /* Accessor macros - this is part of the public interface. */ 179 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 180 #define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname) 181 #define ns_rr_nnamel(rr) ((rr).nnamel + 0) 182 #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 183 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 184 #define ns_rr_ttl(rr) ((u_long)(rr).ttl + 0) 185 #define ns_rr_rdlen(rr) ((size_t)(rr).rdlength + 0) 186 #define ns_rr_rdata(rr) ((rr).rdata + 0) 187 188 /* 189 * These don't have to be in the same order as in the packet flags word, 190 * and they can even overlap in some cases, but they will need to be kept 191 * in synch with ns_parse.c:ns_flagdata[]. 192 */ 193 typedef enum __ns_flag { 194 ns_f_qr, /* Question/Response. */ 195 ns_f_opcode, /* Operation code. */ 196 ns_f_aa, /* Authoritative Answer. */ 197 ns_f_tc, /* Truncation occurred. */ 198 ns_f_rd, /* Recursion Desired. */ 199 ns_f_ra, /* Recursion Available. */ 200 ns_f_z, /* MBZ. */ 201 ns_f_ad, /* Authentic Data (DNSSEC). */ 202 ns_f_cd, /* Checking Disabled (DNSSEC). */ 203 ns_f_rcode, /* Response code. */ 204 ns_f_max 205 } ns_flag; 206 207 /* 208 * Currently defined opcodes. 209 */ 210 typedef enum __ns_opcode { 211 ns_o_query = 0, /* Standard query. */ 212 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ 213 ns_o_status = 2, /* Name server status query (unsupported). */ 214 /* Opcode 3 is undefined/reserved. */ 215 ns_o_notify = 4, /* Zone change notification. */ 216 ns_o_update = 5, /* Zone update message. */ 217 ns_o_max = 6 218 } ns_opcode; 219 220 /* 221 * Currently defined response codes. 222 */ 223 typedef enum __ns_rcode { 224 ns_r_noerror = 0, /* No error occurred. */ 225 ns_r_formerr = 1, /* Format error. */ 226 ns_r_servfail = 2, /* Server failure. */ 227 ns_r_nxdomain = 3, /* Name error. */ 228 ns_r_notimpl = 4, /* Unimplemented. */ 229 ns_r_refused = 5, /* Operation refused. */ 230 /* these are for BIND_UPDATE */ 231 ns_r_yxdomain = 6, /* Name exists */ 232 ns_r_yxrrset = 7, /* RRset exists */ 233 ns_r_nxrrset = 8, /* RRset does not exist */ 234 ns_r_notauth = 9, /* Not authoritative for zone */ 235 ns_r_notzone = 10, /* Zone of record different from zone section */ 236 ns_r_max = 11, 237 /* The following are EDNS extended rcodes */ 238 ns_r_badvers = 16, 239 /* The following are TSIG errors */ 240 ns_r_badsig = 16, 241 ns_r_badkey = 17, 242 ns_r_badtime = 18 243 } ns_rcode; 244 245 /* BIND_UPDATE */ 246 typedef enum __ns_update_operation { 247 ns_uop_delete = 0, 248 ns_uop_add = 1, 249 ns_uop_max = 2 250 } ns_update_operation; 251 252 /* 253 * This structure is used for TSIG authenticated messages 254 */ 255 struct ns_tsig_key { 256 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 257 unsigned char *data; 258 int len; 259 }; 260 typedef struct ns_tsig_key ns_tsig_key; 261 262 /* 263 * This structure is used for TSIG authenticated TCP messages 264 */ 265 struct ns_tcp_tsig_state { 266 int counter; 267 struct dst_key *key; 268 void *ctx; 269 unsigned char sig[NS_PACKETSZ]; 270 int siglen; 271 }; 272 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 273 274 #pragma clang diagnostic pop 275 276 #define NS_TSIG_FUDGE 300 277 #define NS_TSIG_TCP_COUNT 100 278 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 279 280 #define NS_TSIG_ERROR_NO_TSIG -10 281 #define NS_TSIG_ERROR_NO_SPACE -11 282 #define NS_TSIG_ERROR_FORMERR -12 283 284 /* 285 * Currently defined type values for resources and queries. 286 */ 287 typedef enum __ns_type { 288 ns_t_invalid = 0, /* Cookie. */ 289 ns_t_a = 1, /* Host address. */ 290 ns_t_ns = 2, /* Authoritative server. */ 291 ns_t_md = 3, /* Mail destination. */ 292 ns_t_mf = 4, /* Mail forwarder. */ 293 ns_t_cname = 5, /* Canonical name. */ 294 ns_t_soa = 6, /* Start of authority zone. */ 295 ns_t_mb = 7, /* Mailbox domain name. */ 296 ns_t_mg = 8, /* Mail group member. */ 297 ns_t_mr = 9, /* Mail rename name. */ 298 ns_t_null = 10, /* Null resource record. */ 299 ns_t_wks = 11, /* Well known service. */ 300 ns_t_ptr = 12, /* Domain name pointer. */ 301 ns_t_hinfo = 13, /* Host information. */ 302 ns_t_minfo = 14, /* Mailbox information. */ 303 ns_t_mx = 15, /* Mail routing information. */ 304 ns_t_txt = 16, /* Text strings. */ 305 ns_t_rp = 17, /* Responsible person. */ 306 ns_t_afsdb = 18, /* AFS cell database. */ 307 ns_t_x25 = 19, /* X_25 calling address. */ 308 ns_t_isdn = 20, /* ISDN calling address. */ 309 ns_t_rt = 21, /* Router. */ 310 ns_t_nsap = 22, /* NSAP address. */ 311 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 312 ns_t_sig = 24, /* Security signature. */ 313 ns_t_key = 25, /* Security key. */ 314 ns_t_px = 26, /* X.400 mail mapping. */ 315 ns_t_gpos = 27, /* Geographical position (withdrawn). */ 316 ns_t_aaaa = 28, /* IPv6 Address. */ 317 ns_t_loc = 29, /* Location Information. */ 318 ns_t_nxt = 30, /* Next domain (security). */ 319 ns_t_eid = 31, /* Endpoint identifier. */ 320 ns_t_nimloc = 32, /* Nimrod Locator. */ 321 ns_t_srv = 33, /* Server Selection. */ 322 ns_t_atma = 34, /* ATM Address */ 323 ns_t_naptr = 35, /* Naming Authority PoinTeR */ 324 ns_t_kx = 36, /* Key Exchange */ 325 ns_t_cert = 37, /* Certification record */ 326 ns_t_a6 = 38, /* IPv6 address (experimental) */ 327 ns_t_dname = 39, /* Non-terminal DNAME */ 328 ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 329 ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 330 ns_t_apl = 42, /* Address prefix list (RFC 3123) */ 331 ns_t_ds = 43, /* Delegation Signer */ 332 ns_t_sshfp = 44, /* SSH Fingerprint */ 333 ns_t_ipseckey = 45, /* IPSEC Key */ 334 ns_t_rrsig = 46, /* RRset Signature */ 335 ns_t_nsec = 47, /* Negative security */ 336 ns_t_dnskey = 48, /* DNS Key */ 337 ns_t_dhcid = 49, /* Dynamic host configuratin identifier */ 338 ns_t_nsec3 = 50, /* Negative security type 3 */ 339 ns_t_nsec3param = 51, /* Negative security type 3 parameters */ 340 ns_t_hip = 55, /* Host Identity Protocol */ 341 ns_t_spf = 99, /* Sender Policy Framework */ 342 ns_t_tkey = 249, /* Transaction key */ 343 ns_t_tsig = 250, /* Transaction signature. */ 344 ns_t_ixfr = 251, /* Incremental zone transfer. */ 345 ns_t_axfr = 252, /* Transfer zone of authority. */ 346 ns_t_mailb = 253, /* Transfer mailbox records. */ 347 ns_t_maila = 254, /* Transfer mail agent records. */ 348 ns_t_any = 255, /* Wildcard match. */ 349 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 350 ns_t_dlv = 32769, /* DNSSEC look-aside validatation. */ 351 ns_t_max = 65536 352 } ns_type; 353 354 /* Exclusively a QTYPE? (not also an RTYPE) */ 355 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 356 (t) == ns_t_mailb || (t) == ns_t_maila) 357 /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 358 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 359 /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 360 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 361 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 362 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 363 (t) == ns_t_zxfr) 364 365 /* 366 * Values for class field 367 */ 368 typedef enum __ns_class { 369 ns_c_invalid = 0, /* Cookie. */ 370 ns_c_in = 1, /* Internet. */ 371 ns_c_2 = 2, /* unallocated/unsupported. */ 372 ns_c_chaos = 3, /* MIT Chaos-net. */ 373 ns_c_hs = 4, /* MIT Hesiod. */ 374 /* Query class values which do not appear in resource records */ 375 ns_c_none = 254, /* for prereq. sections in update requests */ 376 ns_c_any = 255, /* Wildcard match. */ 377 ns_c_max = 65536 378 } ns_class; 379 380 /* DNSSEC constants. */ 381 382 typedef enum __ns_key_types { 383 ns_kt_rsa = 1, /* key type RSA/MD5 */ 384 ns_kt_dh = 2, /* Diffie Hellman */ 385 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ 386 ns_kt_private = 254 /* Private key type starts with OID */ 387 } ns_key_types; 388 389 typedef enum __ns_cert_types { 390 cert_t_pkix = 1, /* PKIX (X.509v3) */ 391 cert_t_spki = 2, /* SPKI */ 392 cert_t_pgp = 3, /* PGP */ 393 cert_t_url = 253, /* URL private type */ 394 cert_t_oid = 254 /* OID private type */ 395 } ns_cert_types; 396 397 /* Flags field of the KEY RR rdata. */ 398 #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ 399 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ 400 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ 401 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ 402 #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ 403 /* The type bits can also be interpreted independently, as single bits: */ 404 #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ 405 #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ 406 #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 407 #define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */ 408 #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ 409 #define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */ 410 #define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */ 411 #define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */ 412 #define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */ 413 #define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */ 414 #define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */ 415 #define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */ 416 #define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */ 417 #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ 418 #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ 419 #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ 420 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 421 NS_KEY_RESERVED4 | \ 422 NS_KEY_RESERVED5 | \ 423 NS_KEY_RESERVED8 | \ 424 NS_KEY_RESERVED9 | \ 425 NS_KEY_RESERVED10 | \ 426 NS_KEY_RESERVED11 ) 427 #define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */ 428 429 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 430 #define NS_ALG_MD5RSA 1 /* MD5 with RSA */ 431 #define NS_ALG_DH 2 /* Diffie Hellman KEY */ 432 #define NS_ALG_DSA 3 /* DSA KEY */ 433 #define NS_ALG_DSS NS_ALG_DSA 434 #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ 435 #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ 436 437 /* Protocol values */ 438 /* value 0 is reserved */ 439 #define NS_KEY_PROT_TLS 1 440 #define NS_KEY_PROT_EMAIL 2 441 #define NS_KEY_PROT_DNSSEC 3 442 #define NS_KEY_PROT_IPSEC 4 443 #define NS_KEY_PROT_ANY 255 444 445 /* Signatures */ 446 #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ 447 #define NS_MD5RSA_MAX_BITS 4096 448 /* Total of binary mod and exp */ 449 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 450 /* Max length of text sig block */ 451 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 452 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 453 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 454 455 #define NS_DSA_SIG_SIZE 41 456 #define NS_DSA_MIN_SIZE 213 457 #define NS_DSA_MAX_BYTES 405 458 459 /* Offsets into SIG record rdata to find various values */ 460 #define NS_SIG_TYPE 0 /* Type flags */ 461 #define NS_SIG_ALG 2 /* Algorithm */ 462 #define NS_SIG_LABELS 3 /* How many labels in name */ 463 #define NS_SIG_OTTL 4 /* Original TTL */ 464 #define NS_SIG_EXPIR 8 /* Expiration time */ 465 #define NS_SIG_SIGNED 12 /* Signature time */ 466 #define NS_SIG_FOOT 16 /* Key footprint */ 467 #define NS_SIG_SIGNER 18 /* Domain name of who signed it */ 468 469 /* How RR types are represented as bit-flags in NXT records */ 470 #define NS_NXT_BITS 8 471 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 472 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 473 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 474 #define NS_NXT_MAX 127 475 476 /* 477 * EDNS0 extended flags and option codes, host order. 478 */ 479 #define NS_OPT_DNSSEC_OK 0x8000U 480 #define NS_OPT_NSID 3 481 #define NS_OPT_PADDING 12 482 483 /* 484 * Inline versions of get/put short/long. Pointer is advanced. 485 */ 486 #define NS_GET16(s, cp) do { \ 487 const u_char *t_cp = (const u_char *)(cp); \ 488 (s) = ((uint16_t)t_cp[0] << 8) \ 489 | ((uint16_t)t_cp[1]) \ 490 ; \ 491 (cp) += NS_INT16SZ; \ 492 } while (/*CONSTCOND*/0) 493 494 #define NS_GET32(l, cp) do { \ 495 const u_char *t_cp = (const u_char *)(cp); \ 496 (l) = ((uint32_t)t_cp[0] << 24) \ 497 | ((uint32_t)t_cp[1] << 16) \ 498 | ((uint32_t)t_cp[2] << 8) \ 499 | ((uint32_t)t_cp[3]) \ 500 ; \ 501 (cp) += NS_INT32SZ; \ 502 } while (/*CONSTCOND*/0) 503 504 #define NS_PUT16(s, cp) do { \ 505 uint32_t t_s = (uint32_t)(s); \ 506 u_char *t_cp = (u_char *)(cp); \ 507 *t_cp++ = t_s >> 8; \ 508 *t_cp = t_s; \ 509 (cp) += NS_INT16SZ; \ 510 } while (/*CONSTCOND*/0) 511 512 #define NS_PUT32(l, cp) do { \ 513 uint32_t t_l = (uint32_t)(l); \ 514 u_char *t_cp = (u_char *)(cp); \ 515 *t_cp++ = t_l >> 24; \ 516 *t_cp++ = t_l >> 16; \ 517 *t_cp++ = t_l >> 8; \ 518 *t_cp = t_l; \ 519 (cp) += NS_INT32SZ; \ 520 } while (/*CONSTCOND*/0) 521 522 __BEGIN_DECLS 523 524 #if !defined(__LP64__) 525 /* Annoyingly, LP32 shipped with __ names. */ 526 #define ns_format_ttl __ns_format_ttl 527 #define ns_get16 __ns_get16 528 #define ns_get32 __ns_get32 529 #define ns_initparse __ns_initparse 530 #define ns_makecanon __ns_makecanon 531 #define ns_msg_getflag __ns_msg_getflag 532 #define ns_name_compress __ns_name_compress 533 #define ns_name_ntol __ns_name_ntol 534 #define ns_name_ntop __ns_name_ntop 535 #define ns_name_pack __ns_name_pack 536 #define ns_name_pton __ns_name_pton 537 #define ns_name_rollback __ns_name_rollback 538 #define ns_name_skip __ns_name_skip 539 #define ns_name_uncompress __ns_name_uncompress 540 #define ns_name_unpack __ns_name_unpack 541 #define ns_parserr __ns_parserr 542 #define ns_put16 __ns_put16 543 #define ns_put32 __ns_put32 544 #define ns_samename __ns_samename 545 #define ns_skiprr __ns_skiprr 546 #define ns_sprintrr __ns_sprintrr 547 #define ns_sprintrrf __ns_sprintrrf 548 #endif 549 550 int ns_msg_getflag(ns_msg __handle, int __flag) __INTRODUCED_IN(22); 551 uint16_t ns_get16(const u_char* _Nonnull __src) __INTRODUCED_IN(22); 552 uint32_t ns_get32(const u_char* _Nonnull __src) __INTRODUCED_IN(22); 553 void ns_put16(uint16_t __src, u_char* _Nonnull __dst) __INTRODUCED_IN(22); 554 void ns_put32(uint32_t __src, u_char* _Nonnull __dst) __INTRODUCED_IN(22); 555 int ns_initparse(const u_char* _Nonnull __msg, int __msg_size, ns_msg* _Nonnull __handle) __INTRODUCED_IN(22); 556 int ns_skiprr(const u_char* _Nonnull __ptr, const u_char* _Nonnull __eom, ns_sect __section, int __count) __INTRODUCED_IN(22); 557 int ns_parserr(ns_msg* _Nonnull __handle, ns_sect __section, int __rr_number, ns_rr* _Nonnull __rr) __INTRODUCED_IN(22); 558 int ns_sprintrr(const ns_msg* _Nonnull __handle, const ns_rr* _Nonnull __rr, const char* _Nullable __name_ctx, const char* _Nullable __origin, char* _Nonnull __buf, size_t __buf_size) __INTRODUCED_IN(22); 559 int ns_sprintrrf(const u_char* _Nonnull __msg, size_t __msg_size, const char* _Nonnull __name, ns_class __class, ns_type __type, u_long __ttl, const u_char* _Nonnull __rdata, size_t __rdata_size, const char* _Nullable __name_ctx, const char* _Nullable __origin, char* _Nonnull __buf, size_t __buf_size) __INTRODUCED_IN(22); 560 int ns_format_ttl(u_long __ttl, char* _Nonnull __dst, size_t __dst_size) __INTRODUCED_IN(22); 561 int ns_name_ntol(const u_char* _Nonnull __src, u_char* _Nonnull __dst, size_t __dst_size) __INTRODUCED_IN(22); 562 int ns_name_ntop(const u_char* _Nonnull __src, char* _Nonnull __dst, size_t __dst_size) __INTRODUCED_IN(22); 563 int ns_name_pton(const char* _Nonnull __src, u_char* _Nonnull __dst, size_t __dst_size) __INTRODUCED_IN(22); 564 int ns_name_unpack(const u_char* _Nonnull __msg, const u_char* _Nonnull __eom, const u_char* _Nonnull __src, u_char* _Nonnull __dst, size_t __dst_size) __INTRODUCED_IN(22); 565 int ns_name_pack(const u_char* _Nonnull __src, u_char* _Nonnull __dst, int __dst_size, const u_char* _Nullable * _Nullable __dn_ptrs, const u_char* _Nullable * _Nullable __last_dn_ptr) __INTRODUCED_IN(22); 566 int ns_name_uncompress(const u_char* _Nonnull __msg, const u_char* _Nonnull __eom, const u_char* _Nonnull __src, char* _Nonnull __dst, size_t __dst_size) __INTRODUCED_IN(22); 567 int ns_name_compress(const char* _Nonnull __src, u_char* _Nonnull __dst, size_t __dst_size, const u_char* _Nullable * _Nullable __dn_ptrs, const u_char* _Nullable * _Nullable __last_dn_ptr) __INTRODUCED_IN(22); 568 int ns_name_skip(const u_char* _Nullable * _Nonnull __ptr_ptr, const u_char* _Nonnull __eom) __INTRODUCED_IN(22); 569 void ns_name_rollback(const u_char* _Nonnull __src, const u_char* _Nullable * _Nonnull __dn_ptrs, const u_char* _Nullable * _Nonnull __last_dn_ptr) __INTRODUCED_IN(22); 570 571 int ns_makecanon(const char* _Nonnull __src, char* _Nonnull __dst, size_t __dst_size) __INTRODUCED_IN(22); 572 int ns_samename(const char* _Nonnull __lhs, const char* _Nonnull __rhs) __INTRODUCED_IN(22); 573 574 __END_DECLS 575 576 #ifdef BIND_4_COMPAT 577 #include <arpa/nameser_compat.h> 578 #endif 579 580 #endif /* !_ARPA_NAMESER_H_ */ 581