1 /* $NetBSD: nameser.h,v 1.28 2023/05/23 10:22:42 andvar 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/param.h> 59 #include <sys/types.h> 60 #include <sys/cdefs.h> 61 62 #if !defined(_NETBSD_SOURCE) 63 typedef unsigned char u_char; 64 typedef unsigned short u_short; 65 typedef unsigned int u_int; 66 typedef unsigned long u_long; 67 #endif 68 69 /*% 70 * Revision information. This is the release date in YYYYMMDD format. 71 * It can change every day so the right thing to do with it is use it 72 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not 73 * compare for equality; rather, use it to determine whether your libbind.a 74 * contains a new enough lib/nameser/ to support the feature you need. 75 */ 76 77 #define __NAMESER 20090302 /*%< New interface version stamp. */ 78 /* 79 * Define constants based on RFC0883, RFC1034, RFC 1035 80 */ 81 #define NS_PACKETSZ 512 /*%< default UDP packet size */ 82 #define NS_MAXDNAME 1025 /*%< maximum domain name (presentation format)*/ 83 #define NS_MAXMSG 65535 /*%< maximum message size */ 84 #define NS_MAXCDNAME 255 /*%< maximum compressed domain name */ 85 #define NS_MAXLABEL 63 /*%< maximum length of domain label */ 86 #define NS_MAXLABELS 128 /*%< theoretical max #/labels per domain name */ 87 #define NS_MAXNNAME 256 /*%< maximum uncompressed (binary) domain name*/ 88 #define NS_MAXPADDR (sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff") 89 #define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */ 90 #define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */ 91 #define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */ 92 #define NS_INT32SZ 4 /*%< #/bytes of data in a uint32_t */ 93 #define NS_INT16SZ 2 /*%< #/bytes of data in a uint16_t */ 94 #define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */ 95 #define NS_INADDRSZ 4 /*%< IPv4 T_A */ 96 #define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */ 97 #define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */ 98 #define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */ 99 100 /* 101 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 102 * in synch with it. 103 */ 104 typedef enum __ns_sect { 105 ns_s_qd = 0, /*%< Query: Question. */ 106 ns_s_zn = 0, /*%< Update: Zone. */ 107 ns_s_an = 1, /*%< Query: Answer. */ 108 ns_s_pr = 1, /*%< Update: Prerequisites. */ 109 ns_s_ns = 2, /*%< Query: Name servers. */ 110 ns_s_ud = 2, /*%< Update: Update. */ 111 ns_s_ar = 3, /*%< Query|Update: Additional records. */ 112 ns_s_max = 4 113 } ns_sect; 114 115 /*% 116 * Network name (compressed or not) type. Equivalent to a pointer when used 117 * in a function prototype. Can be const'd. 118 */ 119 typedef u_char ns_nname[NS_MAXNNAME]; 120 typedef const u_char *ns_nname_ct; 121 typedef u_char *ns_nname_t; 122 123 struct ns_namemap { ns_nname_ct base; int len; }; 124 typedef struct ns_namemap *ns_namemap_t; 125 typedef const struct ns_namemap *ns_namemap_ct; 126 127 /*% 128 * This is a message handle. It is caller allocated and has no dynamic data. 129 * This structure is intended to be opaque to all but ns_parse.c, thus the 130 * leading _'s on the member names. Use the accessor functions, not the _'s. 131 */ 132 typedef struct __ns_msg { 133 const u_char *_msg, *_eom; 134 uint16_t _id, _flags, _counts[ns_s_max]; 135 const u_char *_sections[ns_s_max]; 136 ns_sect _sect; 137 int _rrnum; 138 const u_char *_msg_ptr; 139 } ns_msg; 140 141 /* 142 * This is a newmsg handle, used when constructing new messages with 143 * ns_newmsg_init, et al. 144 */ 145 struct ns_newmsg { 146 ns_msg msg; 147 const u_char *dnptrs[25]; 148 const u_char **lastdnptr; 149 }; 150 typedef struct ns_newmsg ns_newmsg; 151 152 /* Private data structure - do not use from outside library. */ 153 struct _ns_flagdata { int mask, shift; }; 154 extern struct _ns_flagdata _ns_flagdata[]; 155 156 /* Accessor macros - this is part of the public interface. */ 157 158 #define ns_msg_id(handle) ((handle)._id + 0) 159 #define ns_msg_base(handle) ((handle)._msg + 0) 160 #define ns_msg_end(handle) ((handle)._eom + 0) 161 #define ns_msg_size(handle) ((size_t)((handle)._eom - (handle)._msg)) 162 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 163 164 /*% 165 * This is a parsed record. It is caller allocated and has no dynamic data. 166 */ 167 typedef struct __ns_rr { 168 char name[NS_MAXDNAME]; 169 uint16_t type; 170 uint16_t rr_class; 171 uint32_t ttl; 172 uint16_t rdlength; 173 const u_char * rdata; 174 } ns_rr; 175 176 /* 177 * Same thing, but using uncompressed network binary names, and real C types. 178 */ 179 typedef struct __ns_rr2 { 180 ns_nname nname; 181 size_t nnamel; 182 int type; 183 int rr_class; 184 u_int ttl; 185 int rdlength; 186 const u_char * rdata; 187 } ns_rr2; 188 189 /* Accessor macros - this is part of the public interface. */ 190 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 191 #define ns_rr_nname(rr) ((const ns_nname_t)(rr).nname) 192 #define ns_rr_nnamel(rr) ((rr).nnamel + 0) 193 #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 194 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 195 #define ns_rr_ttl(rr) ((u_long)(rr).ttl + 0) 196 #define ns_rr_rdlen(rr) ((size_t)(rr).rdlength + 0) 197 #define ns_rr_rdata(rr) ((rr).rdata + 0) 198 199 /*% 200 * These don't have to be in the same order as in the packet flags word, 201 * and they can even overlap in some cases, but they will need to be kept 202 * in synch with ns_parse.c:ns_flagdata[]. 203 */ 204 typedef enum __ns_flag { 205 ns_f_qr, /*%< Question/Response. */ 206 ns_f_opcode, /*%< Operation code. */ 207 ns_f_aa, /*%< Authoritative Answer. */ 208 ns_f_tc, /*%< Truncation occurred. */ 209 ns_f_rd, /*%< Recursion Desired. */ 210 ns_f_ra, /*%< Recursion Available. */ 211 ns_f_z, /*%< MBZ. */ 212 ns_f_ad, /*%< Authentic Data (DNSSEC). */ 213 ns_f_cd, /*%< Checking Disabled (DNSSEC). */ 214 ns_f_rcode, /*%< Response code. */ 215 ns_f_max 216 } ns_flag; 217 218 /*% 219 * Currently defined opcodes. 220 */ 221 typedef enum __ns_opcode { 222 ns_o_query = 0, /*%< Standard query. */ 223 ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */ 224 ns_o_status = 2, /*%< Name server status query (unsupported). */ 225 /* Opcode 3 is undefined/reserved. */ 226 ns_o_notify = 4, /*%< Zone change notification. */ 227 ns_o_update = 5, /*%< Zone update message. */ 228 ns_o_max = 6 229 } ns_opcode; 230 231 /*% 232 * Currently defined response codes. 233 */ 234 typedef enum __ns_rcode { 235 ns_r_noerror = 0, /*%< No error occurred. */ 236 ns_r_formerr = 1, /*%< Format error. */ 237 ns_r_servfail = 2, /*%< Server failure. */ 238 ns_r_nxdomain = 3, /*%< Name error. */ 239 ns_r_notimpl = 4, /*%< Unimplemented. */ 240 ns_r_refused = 5, /*%< Operation refused. */ 241 /* these are for BIND_UPDATE */ 242 ns_r_yxdomain = 6, /*%< Name exists */ 243 ns_r_yxrrset = 7, /*%< RRset exists */ 244 ns_r_nxrrset = 8, /*%< RRset does not exist */ 245 ns_r_notauth = 9, /*%< Not authoritative for zone */ 246 ns_r_notzone = 10, /*%< Zone of record different from zone section */ 247 ns_r_max = 11, 248 /* The following are EDNS extended rcodes */ 249 ns_r_badvers = 16, 250 /* The following are TSIG errors */ 251 ns_r_badsig = 16, 252 ns_r_badkey = 17, 253 ns_r_badtime = 18 254 } ns_rcode; 255 256 /* BIND_UPDATE */ 257 typedef enum __ns_update_operation { 258 ns_uop_delete = 0, 259 ns_uop_add = 1, 260 ns_uop_max = 2 261 } ns_update_operation; 262 263 /*% 264 * This structure is used for TSIG authenticated messages 265 */ 266 struct ns_tsig_key { 267 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 268 unsigned char *data; 269 int len; 270 }; 271 typedef struct ns_tsig_key ns_tsig_key; 272 273 /*% 274 * This structure is used for TSIG authenticated TCP messages 275 */ 276 struct ns_tcp_tsig_state { 277 int counter; 278 struct dst_key *key; 279 void *ctx; 280 unsigned char sig[NS_PACKETSZ]; 281 int siglen; 282 }; 283 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 284 285 #define NS_TSIG_FUDGE 300 286 #define NS_TSIG_TCP_COUNT 100 287 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 288 289 #define NS_TSIG_ERROR_NO_TSIG -10 290 #define NS_TSIG_ERROR_NO_SPACE -11 291 #define NS_TSIG_ERROR_FORMERR -12 292 293 /*% 294 * Currently defined type values for resources and queries. 295 */ 296 typedef enum __ns_type { 297 ns_t_invalid = 0, /*%< Cookie. */ 298 ns_t_a = 1, /*%< Host address. */ 299 ns_t_ns = 2, /*%< Authoritative server. */ 300 ns_t_md = 3, /*%< Mail destination. */ 301 ns_t_mf = 4, /*%< Mail forwarder. */ 302 ns_t_cname = 5, /*%< Canonical name. */ 303 ns_t_soa = 6, /*%< Start of authority zone. */ 304 ns_t_mb = 7, /*%< Mailbox domain name. */ 305 ns_t_mg = 8, /*%< Mail group member. */ 306 ns_t_mr = 9, /*%< Mail rename name. */ 307 ns_t_null = 10, /*%< Null resource record. */ 308 ns_t_wks = 11, /*%< Well known service. */ 309 ns_t_ptr = 12, /*%< Domain name pointer. */ 310 ns_t_hinfo = 13, /*%< Host information. */ 311 ns_t_minfo = 14, /*%< Mailbox information. */ 312 ns_t_mx = 15, /*%< Mail routing information. */ 313 ns_t_txt = 16, /*%< Text strings. */ 314 ns_t_rp = 17, /*%< Responsible person. */ 315 ns_t_afsdb = 18, /*%< AFS cell database. */ 316 ns_t_x25 = 19, /*%< X_25 calling address. */ 317 ns_t_isdn = 20, /*%< ISDN calling address. */ 318 ns_t_rt = 21, /*%< Router. */ 319 ns_t_nsap = 22, /*%< NSAP address. */ 320 ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */ 321 ns_t_sig = 24, /*%< Security signature. */ 322 ns_t_key = 25, /*%< Security key. */ 323 ns_t_px = 26, /*%< X.400 mail mapping. */ 324 ns_t_gpos = 27, /*%< Geographical position (withdrawn). */ 325 ns_t_aaaa = 28, /*%< IPv6 Address. */ 326 ns_t_loc = 29, /*%< Location Information. */ 327 ns_t_nxt = 30, /*%< Next domain (security). */ 328 ns_t_eid = 31, /*%< Endpoint identifier. */ 329 ns_t_nimloc = 32, /*%< Nimrod Locator. */ 330 ns_t_srv = 33, /*%< Server Selection. */ 331 ns_t_atma = 34, /*%< ATM Address */ 332 ns_t_naptr = 35, /*%< Naming Authority PoinTeR */ 333 ns_t_kx = 36, /*%< Key Exchange */ 334 ns_t_cert = 37, /*%< Certification record */ 335 ns_t_a6 = 38, /*%< IPv6 address (experimental) */ 336 ns_t_dname = 39, /*%< Non-terminal DNAME */ 337 ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */ 338 ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */ 339 ns_t_apl = 42, /*%< Address prefix list (RFC3123) */ 340 ns_t_ds = 43, /*%< Delegation Signer */ 341 ns_t_sshfp = 44, /*%< SSH Fingerprint */ 342 ns_t_ipseckey = 45, /*%< IPSEC Key */ 343 ns_t_rrsig = 46, /*%< RRset Signature */ 344 ns_t_nsec = 47, /*%< Negative security */ 345 ns_t_dnskey = 48, /*%< DNS Key */ 346 ns_t_dhcid = 49, /*%< Dynamic host configuration identifier */ 347 ns_t_nsec3 = 50, /*%< Negative security type 3 */ 348 ns_t_nsec3param = 51, /*%< Negative security type 3 parameters */ 349 ns_t_hip = 55, /*%< Host Identity Protocol */ 350 ns_t_spf = 99, /*%< Sender Policy Framework */ 351 ns_t_tkey = 249, /*%< Transaction key */ 352 ns_t_tsig = 250, /*%< Transaction signature. */ 353 ns_t_ixfr = 251, /*%< Incremental zone transfer. */ 354 ns_t_axfr = 252, /*%< Transfer zone of authority. */ 355 ns_t_mailb = 253, /*%< Transfer mailbox records. */ 356 ns_t_maila = 254, /*%< Transfer mail agent records. */ 357 ns_t_any = 255, /*%< Wildcard match. */ 358 ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */ 359 ns_t_dlv = 32769, /*%< DNSSEC look-aside validatation. */ 360 ns_t_max = 65536 361 } ns_type; 362 363 /* Exclusively a QTYPE? (not also an RTYPE) */ 364 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 365 (t) == ns_t_mailb || (t) == ns_t_maila) 366 /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 367 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 368 /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 369 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 370 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 371 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 372 (t) == ns_t_zxfr) 373 374 /*% 375 * Values for class field 376 */ 377 typedef enum __ns_class { 378 ns_c_invalid = 0, /*%< Cookie. */ 379 ns_c_in = 1, /*%< Internet. */ 380 ns_c_2 = 2, /*%< unallocated/unsupported. */ 381 ns_c_chaos = 3, /*%< MIT Chaos-net. */ 382 ns_c_hs = 4, /*%< MIT Hesiod. */ 383 /* Query class values which do not appear in resource records */ 384 ns_c_none = 254, /*%< for prereq. sections in update requests */ 385 ns_c_any = 255, /*%< Wildcard match. */ 386 ns_c_max = 65536 387 } ns_class; 388 389 /* DNSSEC constants. */ 390 391 typedef enum __ns_key_types { 392 ns_kt_rsa = 1, /*%< key type RSA/MD5 */ 393 ns_kt_dh = 2, /*%< Diffie Hellman */ 394 ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */ 395 ns_kt_private = 254 /*%< Private key type starts with OID */ 396 } ns_key_types; 397 398 typedef enum __ns_cert_types { 399 cert_t_pkix = 1, /*%< PKIX (X.509v3) */ 400 cert_t_spki = 2, /*%< SPKI */ 401 cert_t_pgp = 3, /*%< PGP */ 402 cert_t_url = 253, /*%< URL private type */ 403 cert_t_oid = 254 /*%< OID private type */ 404 } ns_cert_types; 405 406 /* Flags field of the KEY RR rdata. */ 407 #define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */ 408 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */ 409 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */ 410 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */ 411 #define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */ 412 /* The type bits can also be interpreted independently, as single bits: */ 413 #define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */ 414 #define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */ 415 #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 416 #define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */ 417 #define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */ 418 #define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */ 419 #define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */ 420 #define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */ 421 #define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */ 422 #define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */ 423 #define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */ 424 #define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */ 425 #define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */ 426 #define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */ 427 #define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */ 428 #define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */ 429 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 430 NS_KEY_RESERVED4 | \ 431 NS_KEY_RESERVED5 | \ 432 NS_KEY_RESERVED8 | \ 433 NS_KEY_RESERVED9 | \ 434 NS_KEY_RESERVED10 | \ 435 NS_KEY_RESERVED11 ) 436 #define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */ 437 438 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 439 #define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */ 440 #define NS_ALG_DH 2 /*%< Diffie Hellman KEY */ 441 #define NS_ALG_DSA 3 /*%< DSA KEY */ 442 #define NS_ALG_DSS NS_ALG_DSA 443 #define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */ 444 #define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */ 445 446 /* Protocol values */ 447 /* value 0 is reserved */ 448 #define NS_KEY_PROT_TLS 1 449 #define NS_KEY_PROT_EMAIL 2 450 #define NS_KEY_PROT_DNSSEC 3 451 #define NS_KEY_PROT_IPSEC 4 452 #define NS_KEY_PROT_ANY 255 453 454 /* Signatures */ 455 #define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */ 456 #define NS_MD5RSA_MAX_BITS 4096 457 /* Total of binary mod and exp */ 458 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 459 /* Max length of text sig block */ 460 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 461 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 462 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 463 464 #define NS_DSA_SIG_SIZE 41 465 #define NS_DSA_MIN_SIZE 213 466 #define NS_DSA_MAX_BYTES 405 467 468 /* Offsets into SIG record rdata to find various values */ 469 #define NS_SIG_TYPE 0 /*%< Type flags */ 470 #define NS_SIG_ALG 2 /*%< Algorithm */ 471 #define NS_SIG_LABELS 3 /*%< How many labels in name */ 472 #define NS_SIG_OTTL 4 /*%< Original TTL */ 473 #define NS_SIG_EXPIR 8 /*%< Expiration time */ 474 #define NS_SIG_SIGNED 12 /*%< Signature time */ 475 #define NS_SIG_FOOT 16 /*%< Key footprint */ 476 #define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */ 477 478 /* How RR types are represented as bit-flags in NXT records */ 479 #define NS_NXT_BITS 8 480 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 481 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 482 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 483 #define NS_NXT_MAX 127 484 485 /*% 486 * EDNS0 extended flags and option codes, host order. 487 */ 488 #define NS_OPT_DNSSEC_OK 0x8000U 489 #define NS_OPT_NSID 3 490 491 /*% 492 * Inline versions of get/put short/long. Pointer is advanced. 493 */ 494 #define NS_GET16(s, cp) do { \ 495 const u_char *t_cp = (const u_char *)(cp); \ 496 (s) = ((uint16_t)t_cp[0] << 8) \ 497 | ((uint16_t)t_cp[1]) \ 498 ; \ 499 (cp) += NS_INT16SZ; \ 500 } while (/*CONSTCOND*/0) 501 502 #define NS_GET32(l, cp) do { \ 503 const u_char *t_cp = (const u_char *)(cp); \ 504 (l) = ((uint32_t)t_cp[0] << 24) \ 505 | ((uint32_t)t_cp[1] << 16) \ 506 | ((uint32_t)t_cp[2] << 8) \ 507 | ((uint32_t)t_cp[3]) \ 508 ; \ 509 (cp) += NS_INT32SZ; \ 510 } while (/*CONSTCOND*/0) 511 512 #define NS_PUT16(s, cp) do { \ 513 uint32_t t_s = (uint32_t)(s); \ 514 u_char *t_cp = (u_char *)(cp); \ 515 *t_cp++ = t_s >> 8; \ 516 *t_cp = t_s; \ 517 (cp) += NS_INT16SZ; \ 518 } while (/*CONSTCOND*/0) 519 520 #define NS_PUT32(l, cp) do { \ 521 uint32_t t_l = (uint32_t)(l); \ 522 u_char *t_cp = (u_char *)(cp); \ 523 *t_cp++ = t_l >> 24; \ 524 *t_cp++ = t_l >> 16; \ 525 *t_cp++ = t_l >> 8; \ 526 *t_cp = t_l; \ 527 (cp) += NS_INT32SZ; \ 528 } while (/*CONSTCOND*/0) 529 530 /*% 531 * ANSI C identifier hiding for bind's lib/nameser. 532 */ 533 #define ns_msg_getflag __ns_msg_getflag 534 #define ns_get16 __ns_get16 535 #define ns_get32 __ns_get32 536 #define ns_put16 __ns_put16 537 #define ns_put32 __ns_put32 538 #define ns_initparse __ns_initparse 539 #define ns_skiprr __ns_skiprr 540 #define ns_parserr __ns_parserr 541 #define ns_parserr2 __ns_parserr2 542 #define ns_sprintrr __ns_sprintrr 543 #define ns_sprintrrf __ns_sprintrrf 544 #define ns_format_ttl __ns_format_ttl 545 #define ns_parse_ttl __ns_parse_ttl 546 #define ns_datetosecs __ns_datetosecs 547 #define ns_name_ntol __ns_name_ntol 548 #define ns_name_ntop __ns_name_ntop 549 #define ns_name_pton __ns_name_pton 550 #define ns_name_pton2 __ns_name_pton2 551 #define ns_name_unpack __ns_name_unpack 552 #define ns_name_unpack2 __ns_name_unpack2 553 #define ns_name_pack __ns_name_pack 554 #define ns_name_compress __ns_name_compress 555 #define ns_name_uncompress __ns_name_uncompress 556 #define ns_name_skip __ns_name_skip 557 #define ns_name_rollback __ns_name_rollback 558 #define ns_name_length __ns_name_length 559 #define ns_name_eq __ns_name_eq 560 #define ns_name_owned __ns_name_owned 561 #define ns_name_map __ns_name_map 562 #define ns_name_labels __ns_name_labels 563 #define ns_sign __ns_sign 564 #define ns_sign2 __ns_sign2 565 #define ns_sign_tcp __ns_sign_tcp 566 #define ns_sign_tcp2 __ns_sign_tcp2 567 #define ns_sign_tcp_init __ns_sign_tcp_init 568 #define ns_find_tsig __ns_find_tsig 569 #define ns_verify __ns_verify 570 #define ns_verify_tcp __ns_verify_tcp 571 #define ns_verify_tcp_init __ns_verify_tcp_init 572 #define ns_samedomain __ns_samedomain 573 #define ns_subdomain __ns_subdomain 574 #define ns_makecanon __ns_makecanon 575 #define ns_samename __ns_samename 576 #define ns_newmsg_init __ns_newmsg_init 577 #define ns_newmsg_copy __ns_newmsg_copy 578 #define ns_newmsg_id __ns_newmsg_id 579 #define ns_newmsg_flag __ns_newmsg_flag 580 #define ns_newmsg_q __ns_newmsg_q 581 #define ns_newmsg_rr __ns_newmsg_rr 582 #define ns_newmsg_done __ns_newmsg_done 583 #define ns_rdata_unpack __ns_rdata_unpack 584 #define ns_rdata_equal __ns_rdata_equal 585 #define ns_rdata_refers __ns_rdata_refers 586 587 __BEGIN_DECLS 588 int ns_msg_getflag(ns_msg, int); 589 uint16_t ns_get16(const u_char *); 590 uint32_t ns_get32(const u_char *); 591 void ns_put16(uint16_t, u_char *); 592 void ns_put32(uint32_t, u_char *); 593 int ns_initparse(const u_char *, int, ns_msg *); 594 int ns_skiprr(const u_char *, const u_char *, ns_sect, int); 595 int ns_parserr(ns_msg *, ns_sect, int, ns_rr *); 596 int ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *); 597 int ns_sprintrr(const ns_msg *, const ns_rr *, 598 const char *, const char *, char *, size_t); 599 int ns_sprintrrf(const u_char *, size_t, const char *, 600 ns_class, ns_type, u_long, const u_char *, 601 size_t, const char *, const char *, 602 char *, size_t); 603 int ns_format_ttl(u_long, char *, size_t); 604 int ns_parse_ttl(const char *, u_long *); 605 uint32_t ns_datetosecs(const char *cp, int *errp); 606 int ns_name_ntol(const u_char *, u_char *, size_t); 607 int ns_name_ntop(const u_char *, char *, size_t); 608 int ns_name_pton(const char *, u_char *, size_t); 609 int ns_name_pton2(const char *, u_char *, size_t, size_t *); 610 int ns_name_unpack(const u_char *, const u_char *, 611 const u_char *, u_char *, size_t); 612 int ns_name_unpack2(const u_char *, const u_char *, 613 const u_char *, u_char *, size_t, 614 size_t *); 615 int ns_name_pack(const u_char *, u_char *, int, 616 const u_char **, const u_char **); 617 int ns_name_uncompress(const u_char *, const u_char *, 618 const u_char *, char *, size_t); 619 int ns_name_compress(const char *, u_char *, size_t, 620 const u_char **, const u_char **); 621 int ns_name_skip(const u_char **, const u_char *); 622 void ns_name_rollback(const u_char *, const u_char **, 623 const u_char **); 624 #ifndef __LIBC12_SOURCE__ 625 int ns_sign(u_char *, int *, int, int, void *, 626 const u_char *, int, u_char *, int *, time_t) 627 __RENAME(__ns_sign50); 628 int ns_sign2(u_char *, int *, int, int, void *, 629 const u_char *, int, u_char *, int *, time_t, 630 u_char **, u_char **) 631 __RENAME(__ns_sign250); 632 #endif 633 ssize_t ns_name_length(ns_nname_ct, size_t); 634 int ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t); 635 int ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int); 636 int ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int); 637 int ns_name_labels(ns_nname_ct, size_t); 638 int ns_sign_tcp(u_char *, int *, int, int, 639 ns_tcp_tsig_state *, int); 640 int ns_sign_tcp2(u_char *, int *, int, int, 641 ns_tcp_tsig_state *, int, 642 u_char **, u_char **); 643 int ns_sign_tcp_init(void *, const u_char *, int, 644 ns_tcp_tsig_state *); 645 u_char *ns_find_tsig(u_char *, u_char *); 646 #ifndef __LIBC12_SOURCE__ 647 int ns_verify(u_char *, int *, void *, 648 const u_char *, int, u_char *, int *, 649 time_t *, int) 650 __RENAME(__ns_verify50); 651 #endif 652 int ns_verify_tcp(u_char *, int *, ns_tcp_tsig_state *, int); 653 int ns_verify_tcp_init(void *, const u_char *, int, 654 ns_tcp_tsig_state *); 655 int ns_samedomain(const char *, const char *); 656 int ns_subdomain(const char *, const char *); 657 int ns_makecanon(const char *, char *, size_t); 658 int ns_samename(const char *, const char *); 659 int ns_newmsg_init(u_char *buffer, size_t bufsiz, ns_newmsg *); 660 int ns_newmsg_copy(ns_newmsg *, ns_msg *); 661 void ns_newmsg_id(ns_newmsg *handle, uint16_t id); 662 void ns_newmsg_flag(ns_newmsg *handle, ns_flag flag, u_int value); 663 int ns_newmsg_q(ns_newmsg *handle, ns_nname_ct qname, 664 ns_type qtype, ns_class qclass); 665 int ns_newmsg_rr(ns_newmsg *handle, ns_sect sect, 666 ns_nname_ct name, ns_type type, 667 ns_class rr_class, uint32_t ttl, 668 uint16_t rdlen, const u_char *rdata); 669 size_t ns_newmsg_done(ns_newmsg *handle); 670 ssize_t ns_rdata_unpack(const u_char *, const u_char *, ns_type, 671 const u_char *, size_t, u_char *, size_t); 672 int ns_rdata_equal(ns_type, 673 const u_char *, size_t, 674 const u_char *, size_t); 675 int ns_rdata_refers(ns_type, 676 const u_char *, size_t, 677 const u_char *); 678 __END_DECLS 679 680 #ifdef BIND_4_COMPAT 681 #include <arpa/nameser_compat.h> 682 #endif 683 684 #endif /* !_ARPA_NAMESER_H_ */ 685