1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 * Copyright (c) 2016, Chris Fraire <cfraire@me.com>. 5 */ 6 7 /* 8 * Copyright (c) 1983, 1989, 1993 9 * The Regents of the University of California. All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 /* 41 * Portions Copyright (C) 2004, 2005, 2008, 2009 42 * Internet Systems Consortium, Inc. ("ISC") 43 * Portions Copyright (C) 1996-2003 Internet Software Consortium. 44 * 45 * Permission to use, copy, modify, and/or distribute this software for any 46 * purpose with or without fee is hereby granted, provided that the above 47 * copyright notice and this permission notice appear in all copies. 48 * 49 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 50 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 51 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 52 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 53 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 54 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 55 * PERFORMANCE OF THIS SOFTWARE. 56 */ 57 58 /* 59 * $Id: nameser.h,v 8.50 2003/05/27 23:36:52 marka Exp $ 60 */ 61 62 #ifndef _ARPA_NAMESER_H 63 #define _ARPA_NAMESER_H 64 65 #include <sys/isa_defs.h> 66 67 68 #ifdef __cplusplus 69 extern "C" { 70 #endif 71 72 #define BIND_4_COMPAT 73 74 /* 75 * Revision information. This is the release date in YYYYMMDD format. 76 * It can change every day so the right thing to do with it is use it 77 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not 78 * compare for equality; rather, use it to determine whether your libresolv 79 * contains a new enough lib/nameser/ to support the feature you need. 80 */ 81 82 #define __NAMESER 20090302 /* New interface version stamp. */ 83 84 /* 85 * Define constants based on RFC 883, RFC 1034, RFC 1035 86 */ 87 #define NS_PACKETSZ 512 /* default UDP packet size */ 88 #define NS_MAXDNAME 1025 /* maximum domain name */ 89 #define NS_MAXMSG 65535 /* maximum message size */ 90 #define NS_MAXCDNAME 255 /* maximum compressed domain name */ 91 #define NS_MAXLABEL 63 /* maximum length of domain label */ 92 #define NS_MAXLABELS 128 /* theoretical max #/labels per domain name */ 93 #define NS_MAXNNAME 256 /* maximum uncompressed (binary) domain name */ 94 #define NS_MAXPADDR (sizeof ("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) 95 #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ 96 #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ 97 #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ 98 #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */ 99 #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */ 100 #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */ 101 #define NS_INADDRSZ 4 /* IPv4 T_A */ 102 #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ 103 #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ 104 #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ 105 106 /* 107 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 108 * in synch with it. 109 */ 110 typedef enum __ns_sect { 111 ns_s_qd = 0, /* Query: Question. */ 112 ns_s_zn = 0, /* Update: Zone. */ 113 ns_s_an = 1, /* Query: Answer. */ 114 ns_s_pr = 1, /* Update: Prerequisites. */ 115 ns_s_ns = 2, /* Query: Name servers. */ 116 ns_s_ud = 2, /* Update: Update. */ 117 ns_s_ar = 3, /* Query|Update: Additional records. */ 118 ns_s_max = 4 119 } ns_sect; 120 121 /* 122 * Network name (compressed or not) type. Equivalent to a pointer when used 123 * in a function prototype. Can be const'd. 124 */ 125 typedef uchar_t ns_nname[NS_MAXNNAME]; 126 typedef const uchar_t *ns_nname_ct; 127 typedef uchar_t *ns_nname_t; 128 129 struct ns_namemap { ns_nname_ct base; int len; }; 130 typedef struct ns_namemap *ns_namemap_t; 131 typedef const struct ns_namemap *ns_namemap_ct; 132 133 /* 134 * This is a message handle. It is caller allocated and has no dynamic data. 135 * This structure is intended to be opaque to all but ns_parse.c, thus the 136 * leading _'s on the member names. Use the accessor functions, not the _'s. 137 */ 138 typedef struct __ns_msg { 139 const uchar_t *_msg, *_eom; 140 uint16_t _id, _flags, _counts[ns_s_max]; 141 const uchar_t *_sections[ns_s_max]; 142 ns_sect _sect; 143 int _rrnum; 144 const uchar_t *_msg_ptr; 145 } ns_msg; 146 147 /* 148 * This is a newmsg handle, used when constructing new messages with 149 * ns_newmsg_init, et al. 150 */ 151 struct ns_newmsg { 152 ns_msg msg; 153 const uchar_t *dnptrs[25]; 154 const uchar_t **lastdnptr; 155 }; 156 typedef struct ns_newmsg ns_newmsg; 157 158 /* Private data structure - do not use from outside library. */ 159 struct _ns_flagdata { int mask, shift; }; 160 extern struct _ns_flagdata _ns_flagdata[]; 161 162 /* Accessor macros - this is part of the public interface. */ 163 #define ns_msg_id(handle) ((handle)._id + 0) 164 #define ns_msg_base(handle) ((handle)._msg + 0) 165 #define ns_msg_end(handle) ((handle)._eom + 0) 166 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) 167 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 168 169 /* 170 * This is a parsed record. It is caller allocated and has no dynamic data. 171 */ 172 typedef struct __ns_rr { 173 char name[NS_MAXDNAME]; 174 uint16_t type; 175 uint16_t rr_class; 176 uint32_t ttl; 177 uint16_t rdlength; 178 const uchar_t *rdata; 179 } ns_rr; 180 181 /* 182 * Same thing, but using uncompressed network binary names, and real C types. 183 */ 184 typedef struct __ns_rr2 { 185 ns_nname nname; 186 size_t nnamel; 187 int type; 188 int rr_class; 189 uint_t ttl; 190 int rdlength; 191 const uchar_t *rdata; 192 } ns_rr2; 193 194 /* Accessor macros - this is part of the public interface. */ 195 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 196 #define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname) 197 #define ns_rr_nnamel(rr) ((rr).nnamel + 0) 198 #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 199 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 200 #define ns_rr_ttl(rr) ((rr).ttl + 0) 201 #define ns_rr_rdlen(rr) ((rr).rdlength + 0) 202 #define ns_rr_rdata(rr) ((rr).rdata + 0) 203 204 /* 205 * These don't have to be in the same order as in the packet flags word, 206 * and they can even overlap in some cases, but they will need to be kept 207 * in synch with ns_parse.c:ns_flagdata[]. 208 */ 209 typedef enum __ns_flag { 210 ns_f_qr, /* Question/Response. */ 211 ns_f_opcode, /* Operation code. */ 212 ns_f_aa, /* Authoritative Answer. */ 213 ns_f_tc, /* Truncation occurred. */ 214 ns_f_rd, /* Recursion Desired. */ 215 ns_f_ra, /* Recursion Available. */ 216 ns_f_z, /* MBZ. */ 217 ns_f_ad, /* Authentic Data (DNSSEC). */ 218 ns_f_cd, /* Checking Disabled (DNSSEC). */ 219 ns_f_rcode, /* Response code. */ 220 ns_f_max 221 } ns_flag; 222 223 /* 224 * Currently defined opcodes. 225 */ 226 typedef enum __ns_opcode { 227 ns_o_query = 0, /* Standard query. */ 228 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ 229 ns_o_status = 2, /* Name server status query (unsupported). */ 230 /* Opcode 3 is undefined/reserved. */ 231 ns_o_notify = 4, /* Zone change notification. */ 232 ns_o_update = 5, /* Zone update message. */ 233 ns_o_max = 6 234 } ns_opcode; 235 236 /* 237 * Currently defined response codes. 238 */ 239 typedef enum __ns_rcode { 240 ns_r_noerror = 0, /* No error occurred. */ 241 ns_r_formerr = 1, /* Format error. */ 242 ns_r_servfail = 2, /* Server failure. */ 243 ns_r_nxdomain = 3, /* Name error. */ 244 ns_r_notimpl = 4, /* Unimplemented. */ 245 ns_r_refused = 5, /* Operation refused. */ 246 /* these are for BIND_UPDATE */ 247 ns_r_yxdomain = 6, /* Name exists */ 248 ns_r_yxrrset = 7, /* RRset exists */ 249 ns_r_nxrrset = 8, /* RRset does not exist */ 250 ns_r_notauth = 9, /* Not authoritative for zone */ 251 ns_r_notzone = 10, /* Zone of record different from zone section */ 252 ns_r_max = 11, 253 /* The following are EDNS extended rcodes */ 254 ns_r_badvers = 16, 255 /* The following are TSIG errors */ 256 ns_r_badsig = 16, 257 ns_r_badkey = 17, 258 ns_r_badtime = 18 259 } ns_rcode; 260 261 /* BIND_UPDATE */ 262 typedef enum __ns_update_operation { 263 ns_uop_delete = 0, 264 ns_uop_add = 1, 265 ns_uop_max = 2 266 } ns_update_operation; 267 268 /* 269 * This RR-like structure is particular to UPDATE. 270 */ 271 struct ns_updrec { 272 struct ns_updrec *r_prev; /* prev record */ 273 struct ns_updrec *r_next; /* next record */ 274 uint8_t r_section; /* ZONE/PREREQUISITE/UPDATE */ 275 char *r_dname; /* owner of the RR */ 276 uint16_t r_class; /* class number */ 277 uint16_t r_type; /* type number */ 278 uint32_t r_ttl; /* time to live */ 279 uchar_t *r_data; /* rdata fields as text string */ 280 uint16_t r_size; /* size of r_data field */ 281 int r_opcode; /* type of operation */ 282 /* following fields for private use by the resolver/server routines */ 283 struct ns_updrec *r_grpnext; /* next record when grouped */ 284 struct databuf *r_dp; /* databuf to process */ 285 struct databuf *r_deldp; /* databuf's deleted/overwritten */ 286 uint16_t r_zone; /* zone number on server */ 287 }; 288 typedef struct ns_updrec ns_updrec; 289 290 /* 291 * This structure is used for TSIG authenticated messages 292 */ 293 struct ns_tsig_key { 294 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 295 unsigned char *data; 296 int len; 297 }; 298 typedef struct ns_tsig_key ns_tsig_key; 299 300 /* 301 * This structure is used for TSIG authenticated TCP messages 302 */ 303 struct ns_tcp_tsig_state { 304 int counter; 305 struct dst_key *key; 306 void *ctx; 307 unsigned char sig[NS_PACKETSZ]; 308 int siglen; 309 }; 310 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 311 312 #define NS_TSIG_FUDGE 300 313 #define NS_TSIG_TCP_COUNT 100 314 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 315 316 #define NS_TSIG_ERROR_NO_TSIG -10 317 #define NS_TSIG_ERROR_NO_SPACE -11 318 #define NS_TSIG_ERROR_FORMERR -12 319 320 /* 321 * Currently defined type values for resources and queries. 322 */ 323 typedef enum __ns_type { 324 ns_t_invalid = 0, /* Cookie. */ 325 ns_t_a = 1, /* Host address. */ 326 ns_t_ns = 2, /* Authoritative server. */ 327 ns_t_md = 3, /* Mail destination. */ 328 ns_t_mf = 4, /* Mail forwarder. */ 329 ns_t_cname = 5, /* Canonical name. */ 330 ns_t_soa = 6, /* Start of authority zone. */ 331 ns_t_mb = 7, /* Mailbox domain name. */ 332 ns_t_mg = 8, /* Mail group member. */ 333 ns_t_mr = 9, /* Mail rename name. */ 334 ns_t_null = 10, /* Null resource record. */ 335 ns_t_wks = 11, /* Well known service. */ 336 ns_t_ptr = 12, /* Domain name pointer. */ 337 ns_t_hinfo = 13, /* Host information. */ 338 ns_t_minfo = 14, /* Mailbox information. */ 339 ns_t_mx = 15, /* Mail routing information. */ 340 ns_t_txt = 16, /* Text strings. */ 341 ns_t_rp = 17, /* Responsible person. */ 342 ns_t_afsdb = 18, /* AFS cell database. */ 343 ns_t_x25 = 19, /* X_25 calling address. */ 344 ns_t_isdn = 20, /* ISDN calling address. */ 345 ns_t_rt = 21, /* Router. */ 346 ns_t_nsap = 22, /* NSAP address. */ 347 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 348 ns_t_sig = 24, /* Security signature. */ 349 ns_t_key = 25, /* Security key. */ 350 ns_t_px = 26, /* X.400 mail mapping. */ 351 ns_t_gpos = 27, /* Geographical position (withdrawn). */ 352 ns_t_aaaa = 28, /* IPv6 Address. */ 353 ns_t_loc = 29, /* Location Information. */ 354 ns_t_nxt = 30, /* Next domain (security). */ 355 ns_t_eid = 31, /* Endpoint identifier. */ 356 ns_t_nimloc = 32, /* Nimrod Locator. */ 357 ns_t_srv = 33, /* Server Selection. */ 358 ns_t_atma = 34, /* ATM Address */ 359 ns_t_naptr = 35, /* Naming Authority PoinTeR */ 360 ns_t_kx = 36, /* Key Exchange */ 361 ns_t_cert = 37, /* Certification record */ 362 ns_t_a6 = 38, /* IPv6 address (deprecated) */ 363 ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ 364 ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 365 ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 366 ns_t_apl = 42, /* Address prefix list (RFC 3123) */ 367 ns_t_ds = 43, /* Delegation Signer */ 368 ns_t_sshfp = 44, /* SSH Fingerprint */ 369 ns_t_ipseckey = 45, /* IPSEC Key */ 370 ns_t_rrsig = 46, /* RRset Signature */ 371 ns_t_nsec = 47, /* Negative security */ 372 ns_t_dnskey = 48, /* DNS Key */ 373 ns_t_dhcid = 49, /* Dynamic host configuratin identifier */ 374 ns_t_nsec3 = 50, /* Negative security type 3 */ 375 ns_t_nsec3param = 51, /* Negative security type 3 parameters */ 376 ns_t_tlsa = 52, /* TLSA (RFC 6698) */ 377 ns_t_smimea = 53, /* S/MIME cert association (RFC 8162) */ 378 ns_t_hip = 55, /* Host Identity Protocol */ 379 ns_t_cds = 59, /* Child DS (RFC 7344) */ 380 ns_t_cdnskey = 60, /* DNSKEY(s) the Child wants reflected in DS */ 381 ns_t_openpgpkey = 61, /* OpenPGP Key (RFC 7929) */ 382 ns_t_csync = 62, /* Child-To-Parent Synchronization (RFC 7477) */ 383 ns_t_spf = 99, /* Sender Policy Framework */ 384 ns_t_tkey = 249, /* Transaction key */ 385 ns_t_tsig = 250, /* Transaction signature. */ 386 ns_t_ixfr = 251, /* Incremental zone transfer. */ 387 ns_t_axfr = 252, /* Transfer zone of authority. */ 388 ns_t_mailb = 253, /* Transfer mailbox records. */ 389 ns_t_maila = 254, /* Transfer mail agent records. */ 390 ns_t_any = 255, /* Wildcard match. */ 391 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 392 ns_t_caa = 257, /* Certification Authority Restriction */ 393 ns_t_dlv = 32769, /* DNSSEC look-aside validatation. */ 394 ns_t_max = 65536 395 } ns_type; 396 397 /* Exclusively a QTYPE? (not also an RTYPE) */ 398 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 399 (t) == ns_t_mailb || (t) == ns_t_maila) 400 /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 401 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 402 /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 403 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 404 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 405 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 406 (t) == ns_t_zxfr) 407 408 /* 409 * Values for class field 410 */ 411 typedef enum __ns_class { 412 ns_c_invalid = 0, /* Cookie. */ 413 ns_c_in = 1, /* Internet. */ 414 ns_c_2 = 2, /* unallocated/unsupported. */ 415 ns_c_chaos = 3, /* MIT Chaos-net. */ 416 ns_c_hs = 4, /* MIT Hesiod. */ 417 /* Query class values which do not appear in resource records */ 418 ns_c_none = 254, /* for prereq. sections in update requests */ 419 ns_c_any = 255, /* Wildcard match. */ 420 ns_c_max = 65536 421 } ns_class; 422 423 /* DNSSEC constants. */ 424 425 typedef enum __ns_key_types { 426 ns_kt_rsa = 1, /* key type RSA/MD5 */ 427 ns_kt_dh = 2, /* Diffie Hellman */ 428 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ 429 ns_kt_private = 254 /* Private key type starts with OID */ 430 } ns_key_types; 431 432 typedef enum __ns_cert_types { 433 cert_t_pkix = 1, /* PKIX (X.509v3) */ 434 cert_t_spki = 2, /* SPKI */ 435 cert_t_pgp = 3, /* PGP */ 436 cert_t_url = 253, /* URL private type */ 437 cert_t_oid = 254 /* OID private type */ 438 } ns_cert_types; 439 440 /* Flags field of the KEY RR rdata. */ 441 #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ 442 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ 443 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ 444 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ 445 #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ 446 /* The type bits can also be interpreted independently, as single bits: */ 447 #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ 448 #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ 449 #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 450 #define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */ 451 #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ 452 #define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */ 453 #define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */ 454 #define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */ 455 #define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */ 456 #define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */ 457 #define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */ 458 #define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */ 459 #define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */ 460 #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ 461 #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ 462 #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ 463 #define NS_KEY_RESERVED_BITMASK (NS_KEY_RESERVED2 | \ 464 NS_KEY_RESERVED4 | \ 465 NS_KEY_RESERVED5 | \ 466 NS_KEY_RESERVED8 | \ 467 NS_KEY_RESERVED9 | \ 468 NS_KEY_RESERVED10 | \ 469 NS_KEY_RESERVED11) 470 #define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */ 471 472 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 473 #define NS_ALG_MD5RSA 1 /* MD5 with RSA */ 474 #define NS_ALG_DH 2 /* Diffie Hellman KEY */ 475 #define NS_ALG_DSA 3 /* DSA KEY */ 476 #define NS_ALG_DSS NS_ALG_DSA 477 #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ 478 #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ 479 480 /* Protocol values */ 481 /* value 0 is reserved */ 482 #define NS_KEY_PROT_TLS 1 483 #define NS_KEY_PROT_EMAIL 2 484 #define NS_KEY_PROT_DNSSEC 3 485 #define NS_KEY_PROT_IPSEC 4 486 #define NS_KEY_PROT_ANY 255 487 488 /* Signatures */ 489 #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ 490 #define NS_MD5RSA_MAX_BITS 4096 491 /* Total of binary mod and exp */ 492 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 493 /* Max length of text sig block */ 494 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 495 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 496 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 497 498 #define NS_DSA_SIG_SIZE 41 499 #define NS_DSA_MIN_SIZE 213 500 #define NS_DSA_MAX_BYTES 405 501 502 /* Offsets into SIG record rdata to find various values */ 503 #define NS_SIG_TYPE 0 /* Type flags */ 504 #define NS_SIG_ALG 2 /* Algorithm */ 505 #define NS_SIG_LABELS 3 /* How many labels in name */ 506 #define NS_SIG_OTTL 4 /* Original TTL */ 507 #define NS_SIG_EXPIR 8 /* Expiration time */ 508 #define NS_SIG_SIGNED 12 /* Signature time */ 509 #define NS_SIG_FOOT 16 /* Key footprint */ 510 #define NS_SIG_SIGNER 18 /* Domain name of who signed it */ 511 512 /* How RR types are represented as bit-flags in NXT records */ 513 #define NS_NXT_BITS 8 514 #define NS_NXT_BIT_SET(n, p) \ 515 (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 516 #define NS_NXT_BIT_CLEAR(n, p) \ 517 (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 518 #define NS_NXT_BIT_ISSET(n, p) \ 519 (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 520 #define NS_NXT_MAX 127 521 522 /* 523 * EDNS0 extended flags, host order. 524 */ 525 #define NS_OPT_DNSSEC_OK 0x8000U 526 #define NS_OPT_NSID 3 527 528 /* 529 * Inline versions of get/put short/long. Pointer is advanced. 530 */ 531 #define NS_GET16(s, cp) do { \ 532 register const uchar_t *t_cp = (const uchar_t *)(cp); \ 533 (s) = ((uint16_t)t_cp[0] << 8) \ 534 | ((uint16_t)t_cp[1]) \ 535 ; \ 536 (cp) += NS_INT16SZ; \ 537 } while (0) 538 539 #define NS_GET32(l, cp) do { \ 540 register const uchar_t *t_cp = (const uchar_t *)(cp); \ 541 (l) = ((uint32_t)t_cp[0] << 24) \ 542 | ((uint32_t)t_cp[1] << 16) \ 543 | ((uint32_t)t_cp[2] << 8) \ 544 | ((uint32_t)t_cp[3]) \ 545 ; \ 546 (cp) += NS_INT32SZ; \ 547 } while (0) 548 549 #define NS_PUT16(s, cp) do { \ 550 register uint16_t t_s = (uint16_t)(s); \ 551 register uchar_t *t_cp = (uchar_t *)(cp); \ 552 *t_cp++ = t_s >> 8; \ 553 *t_cp = t_s; \ 554 (cp) += NS_INT16SZ; \ 555 } while (0) 556 557 #define NS_PUT32(l, cp) do { \ 558 register uint32_t t_l = (uint32_t)(l); \ 559 register uchar_t *t_cp = (uchar_t *)(cp); \ 560 *t_cp++ = t_l >> 24; \ 561 *t_cp++ = t_l >> 16; \ 562 *t_cp++ = t_l >> 8; \ 563 *t_cp = t_l; \ 564 (cp) += NS_INT32SZ; \ 565 } while (0) 566 567 /* 568 * ANSI C identifier hiding. 569 */ 570 #define ns_msg_getflag __ns_msg_getflag 571 #define ns_get16 __ns_get16 572 #define ns_get32 __ns_get32 573 #define ns_put16 __ns_put16 574 #define ns_put32 __ns_put32 575 #define ns_initparse __ns_initparse 576 #define ns_skiprr __ns_skiprr 577 #define ns_parserr __ns_parserr 578 #define ns_parserr2 __ns_parserr2 579 #define ns_sprintrr __ns_sprintrr 580 #define ns_sprintrrf __ns_sprintrrf 581 #define ns_format_ttl __ns_format_ttl 582 #define ns_parse_ttl __ns_parse_ttl 583 #define ns_datetosecs __ns_datetosecs 584 #define ns_name_ntol __ns_name_ntol 585 #define ns_name_ntop __ns_name_ntop 586 #define ns_name_pton __ns_name_pton 587 #define ns_name_pton2 __ns_name_pton2 588 #define ns_name_unpack __ns_name_unpack 589 #define ns_name_pack __ns_name_pack 590 #define ns_name_compress __ns_name_compress 591 #define ns_name_uncompress __ns_name_uncompress 592 #define ns_name_skip __ns_name_skip 593 #define ns_name_rollback __ns_name_rollback 594 #define ns_name_length __ns_name_length 595 #define ns_name_eq __ns_name_eq 596 #define ns_name_owned __ns_name_owned 597 #define ns_name_map __ns_name_map 598 #define ns_name_labels __ns_name_labels 599 #define ns_sign __ns_sign 600 #define ns_sign2 __ns_sign2 601 #define ns_sign_tcp __ns_sign_tcp 602 #define ns_sign_tcp2 __ns_sign_tcp2 603 #define ns_sign_tcp_init __ns_sign_tcp_init 604 #define ns_find_tsig __ns_find_tsig 605 #define ns_verify __ns_verify 606 #define ns_verify_tcp __ns_verify_tcp 607 #define ns_verify_tcp_init __ns_verify_tcp_init 608 #define ns_samedomain __ns_samedomain 609 #define ns_subdomain __ns_subdomain 610 #define ns_makecanon __ns_makecanon 611 #define ns_samename __ns_samename 612 #define ns_newmsg_init __ns_newmsg_init 613 #define ns_newmsg_copy __ns_newmsg_copy 614 #define ns_newmsg_id __ns_newmsg_id 615 #define ns_newmsg_flag __ns_newmsg_flag 616 #define ns_newmsg_q __ns_newmsg_q 617 #define ns_newmsg_rr __ns_newmsg_rr 618 #define ns_newmsg_done __ns_newmsg_done 619 #define ns_rdata_unpack __ns_rdata_unpack 620 #define ns_rdata_equal __ns_rdata_equal 621 #define ns_rdata_refers __ns_rdata_refers 622 623 int ns_msg_getflag(ns_msg, int); 624 uint_t ns_get16(const uchar_t *); 625 ulong_t ns_get32(const uchar_t *); 626 void ns_put16(uint_t, uchar_t *); 627 void ns_put32(ulong_t, uchar_t *); 628 int ns_initparse(const uchar_t *, int, ns_msg *); 629 int ns_skiprr(const uchar_t *, const uchar_t *, ns_sect, int); 630 int ns_parserr(ns_msg *, ns_sect, int, ns_rr *); 631 int ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *); 632 int ns_sprintrr(const ns_msg *, const ns_rr *, 633 const char *, const char *, char *, size_t); 634 int ns_sprintrrf(const uchar_t *, size_t, const char *, 635 ns_class, ns_type, ulong_t, const uchar_t *, 636 size_t, const char *, const char *, 637 char *, size_t); 638 int ns_format_ttl(ulong_t, char *, size_t); 639 int ns_parse_ttl(const char *, ulong_t *); 640 uint32_t ns_datetosecs(const char *cp, int *errp); 641 int ns_name_ntol(const uchar_t *, uchar_t *, size_t); 642 int ns_name_ntop(const uchar_t *, char *, size_t); 643 int ns_name_pton(const char *, uchar_t *, size_t); 644 int ns_name_pton2(const char *, uchar_t *, size_t, size_t *); 645 int ns_name_unpack(const uchar_t *, const uchar_t *, 646 const uchar_t *, uchar_t *, size_t); 647 int ns_name_pack(const uchar_t *, uchar_t *, int, 648 const uchar_t **, const uchar_t **); 649 int ns_name_uncompress(const uchar_t *, const uchar_t *, 650 const uchar_t *, char *, size_t); 651 int ns_name_compress(const char *, uchar_t *, size_t, 652 const uchar_t **, const uchar_t **); 653 int ns_name_skip(const uchar_t **, const uchar_t *); 654 void ns_name_rollback(const uchar_t *, const uchar_t **, 655 const uchar_t **); 656 ssize_t ns_name_length(ns_nname_ct, size_t); 657 int ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t); 658 int ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int); 659 int ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int); 660 int ns_name_labels(ns_nname_ct, size_t); 661 int ns_sign(uchar_t *, int *, int, int, void *, 662 const uchar_t *, int, uchar_t *, int *, time_t); 663 int ns_sign2(uchar_t *, int *, int, int, void *, 664 const uchar_t *, int, uchar_t *, int *, time_t, 665 uchar_t **, uchar_t **); 666 int ns_sign_tcp(uchar_t *, int *, int, int, 667 ns_tcp_tsig_state *, int); 668 int ns_sign_tcp2(uchar_t *, int *, int, int, 669 ns_tcp_tsig_state *, int, 670 uchar_t **, uchar_t **); 671 int ns_sign_tcp_init(void *, const uchar_t *, int, 672 ns_tcp_tsig_state *); 673 uchar_t *ns_find_tsig(uchar_t *, uchar_t *); 674 int ns_verify(uchar_t *, int *, void *, 675 const uchar_t *, int, uchar_t *, int *, 676 time_t *, int); 677 int ns_verify_tcp(uchar_t *, int *, ns_tcp_tsig_state *, int); 678 int ns_verify_tcp_init(void *, const uchar_t *, int, 679 ns_tcp_tsig_state *); 680 int ns_samedomain(const char *, const char *); 681 int ns_subdomain(const char *, const char *); 682 int ns_makecanon(const char *, char *, size_t); 683 int ns_samename(const char *, const char *); 684 int ns_newmsg_init(uchar_t *buffer, size_t bufsiz, ns_newmsg *); 685 int ns_newmsg_copy(ns_newmsg *, ns_msg *); 686 void ns_newmsg_id(ns_newmsg *handle, uint16_t id); 687 void ns_newmsg_flag(ns_newmsg *handle, ns_flag flag, uint_t value); 688 int ns_newmsg_q(ns_newmsg *handle, ns_nname_ct qname, 689 ns_type qtype, ns_class qclass); 690 int ns_newmsg_rr(ns_newmsg *handle, ns_sect sect, 691 ns_nname_ct name, ns_type type, 692 ns_class rr_class, uint32_t ttl, 693 uint16_t rdlen, const uchar_t *rdata); 694 size_t ns_newmsg_done(ns_newmsg *handle); 695 ssize_t ns_rdata_unpack(const uchar_t *, const uchar_t *, ns_type, 696 const uchar_t *, size_t, uchar_t *, size_t); 697 int ns_rdata_equal(ns_type, const uchar_t *, size_t, 698 const uchar_t *, size_t); 699 int ns_rdata_refers(ns_type, 700 const uchar_t *, size_t, 701 const uchar_t *); 702 703 #ifdef BIND_4_COMPAT 704 #include <arpa/nameser_compat.h> 705 #endif 706 707 #ifdef __cplusplus 708 } 709 #endif 710 711 #endif /* !_ARPA_NAMESER_H */ 712