1 /* 2 * Copyright (c) 1983, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1996-1999 by Internet Software Consortium. 36 * 37 * Permission to use, copy, modify, and distribute this software for any 38 * purpose with or without fee is hereby granted, provided that the above 39 * copyright notice and this permission notice appear in all copies. 40 * 41 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS 42 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE 44 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 45 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 46 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 47 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 48 * SOFTWARE. 49 */ 50 51 /* 52 * $Id: nameser.h,v 1.2.2.4 2003/06/27 03:51:37 marka Exp $ 53 */ 54 55 #ifndef REPLACE_ARPA_NAMESER_H_ 56 #define REPLACE_ARPA_NAMESER_H_ 57 58 #ifndef __P 59 # define __P(x) x 60 #endif 61 62 #if defined( HAVE_ARPA_NAMESER_H ) && defined( HAVE_NS_TYPE ) 63 #define dn_expand __dn_expand 64 int dn_expand __P((const u_char *, const u_char *, const u_char *, 65 char *, int)); 66 #endif 67 #define dn_skipname __dn_skipname 68 int dn_skipname __P((const u_char *, const u_char *)); 69 70 #include <sys/param.h> 71 #ifdef HAVE_SYS_TYPES_H 72 #include <sys/types.h> /* types (u_char .. etc..) */ 73 #endif 74 75 #ifdef HAVE_INTTYPES_H 76 #include <inttypes.h> 77 #endif 78 79 #ifndef HAVE_U_INT8_T 80 # ifdef HAVE_UINT8_T 81 typedef uint8_t u_int8_t; 82 # else 83 typedef unsigned char u_int8_t; 84 # endif 85 #endif 86 87 #ifndef HAVE_U_INT16_T 88 # ifdef HAVE_UINT16_T 89 typedef uint16_t u_int16_t; 90 # else 91 typedef unsigned short u_int16_t; 92 # endif 93 #endif 94 95 #ifndef HAVE_U_INT32_T 96 # ifdef HAVE_UINT32_T 97 typedef uint32_t u_int32_t; 98 # else 99 typedef unsigned int u_int32_t; 100 # endif 101 #endif 102 103 104 #if 0 105 #if (!defined(BSD)) || (BSD < 199306) 106 # include <sys/bitypes.h> 107 #else 108 # include <sys/types.h> 109 #endif 110 #include <sys/cdefs.h> 111 #endif 112 113 /* 114 * Revision information. This is the release date in YYYYMMDD format. 115 * It can change every day so the right thing to do with it is use it 116 * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not 117 * compare for equality; rather, use it to determine whether your libbind.a 118 * contains a new enough lib/nameser/ to support the feature you need. 119 */ 120 121 #define __NAMESER 19991006 /* New interface version stamp. */ 122 123 /* 124 * Define constants based on RFC 883, RFC 1034, RFC 1035 125 */ 126 #define NS_PACKETSZ 512 /* default UDP packet size */ 127 #define NS_MAXDNAME 1025 /* maximum domain name */ 128 #define NS_MAXMSG 65535 /* maximum message size */ 129 #define NS_MAXCDNAME 255 /* maximum compressed domain name */ 130 #define NS_MAXLABEL 63 /* maximum length of domain label */ 131 #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ 132 #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ 133 #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ 134 #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */ 135 #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */ 136 #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */ 137 #define NS_INADDRSZ 4 /* IPv4 T_A */ 138 #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ 139 #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ 140 #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ 141 142 /* 143 * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 144 * in synch with it. 145 */ 146 typedef enum __ns_sect { 147 ns_s_qd = 0, /* Query: Question. */ 148 ns_s_zn = 0, /* Update: Zone. */ 149 ns_s_an = 1, /* Query: Answer. */ 150 ns_s_pr = 1, /* Update: Prerequisites. */ 151 ns_s_ns = 2, /* Query: Name servers. */ 152 ns_s_ud = 2, /* Update: Update. */ 153 ns_s_ar = 3, /* Query|Update: Additional records. */ 154 ns_s_max = 4 155 } ns_sect; 156 157 /* 158 * This is a message handle. It is caller allocated and has no dynamic data. 159 * This structure is intended to be opaque to all but ns_parse.c, thus the 160 * leading _'s on the member names. Use the accessor functions, not the _'s. 161 */ 162 typedef struct __ns_msg { 163 const u_char *_msg, *_eom; 164 u_int16_t _id, _flags, _counts[ns_s_max]; 165 const u_char *_sections[ns_s_max]; 166 ns_sect _sect; 167 int _rrnum; 168 const u_char *_msg_ptr; 169 } ns_msg; 170 171 /* Private data structure - do not use from outside library. */ 172 struct _ns_flagdata { int mask, shift; }; 173 extern struct _ns_flagdata _ns_flagdata[]; 174 175 /* Accessor macros - this is part of the public interface. */ 176 177 #define ns_msg_id(handle) ((handle)._id + 0) 178 #define ns_msg_base(handle) ((handle)._msg + 0) 179 #define ns_msg_end(handle) ((handle)._eom + 0) 180 #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) 181 #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 182 183 /* 184 * This is a parsed record. It is caller allocated and has no dynamic data. 185 */ 186 typedef struct __ns_rr { 187 char name[NS_MAXDNAME]; 188 u_int16_t type; 189 u_int16_t rr_class; 190 u_int32_t ttl; 191 u_int16_t rdlength; 192 const u_char * rdata; 193 } ns_rr; 194 195 /* Accessor macros - this is part of the public interface. */ 196 #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 197 #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 198 #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 199 #define ns_rr_ttl(rr) ((rr).ttl + 0) 200 #define ns_rr_rdlen(rr) ((rr).rdlength + 0) 201 #define ns_rr_rdata(rr) ((rr).rdata + 0) 202 203 /* 204 * These don't have to be in the same order as in the packet flags word, 205 * and they can even overlap in some cases, but they will need to be kept 206 * in synch with ns_parse.c:ns_flagdata[]. 207 */ 208 typedef enum __ns_flag { 209 ns_f_qr, /* Question/Response. */ 210 ns_f_opcode, /* Operation code. */ 211 ns_f_aa, /* Authoritative Answer. */ 212 ns_f_tc, /* Truncation occurred. */ 213 ns_f_rd, /* Recursion Desired. */ 214 ns_f_ra, /* Recursion Available. */ 215 ns_f_z, /* MBZ. */ 216 ns_f_ad, /* Authentic Data (DNSSEC). */ 217 ns_f_cd, /* Checking Disabled (DNSSEC). */ 218 ns_f_rcode, /* Response code. */ 219 ns_f_max 220 } ns_flag; 221 222 /* 223 * Currently defined opcodes. 224 */ 225 typedef enum __ns_opcode { 226 ns_o_query = 0, /* Standard query. */ 227 ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ 228 ns_o_status = 2, /* Name server status query (unsupported). */ 229 /* Opcode 3 is undefined/reserved. */ 230 ns_o_notify = 4, /* Zone change notification. */ 231 ns_o_update = 5, /* Zone update message. */ 232 ns_o_max = 6 233 } ns_opcode; 234 235 /* 236 * Currently defined response codes. 237 */ 238 typedef enum __ns_rcode { 239 ns_r_noerror = 0, /* No error occurred. */ 240 ns_r_formerr = 1, /* Format error. */ 241 ns_r_servfail = 2, /* Server failure. */ 242 ns_r_nxdomain = 3, /* Name error. */ 243 ns_r_notimpl = 4, /* Unimplemented. */ 244 ns_r_refused = 5, /* Operation refused. */ 245 /* these are for BIND_UPDATE */ 246 ns_r_yxdomain = 6, /* Name exists */ 247 ns_r_yxrrset = 7, /* RRset exists */ 248 ns_r_nxrrset = 8, /* RRset does not exist */ 249 ns_r_notauth = 9, /* Not authoritative for zone */ 250 ns_r_notzone = 10, /* Zone of record different from zone section */ 251 ns_r_max = 11, 252 /* The following are EDNS extended rcodes */ 253 ns_r_badvers = 16, 254 /* The following are TSIG errors */ 255 ns_r_badsig = 16, 256 ns_r_badkey = 17, 257 ns_r_badtime = 18 258 } ns_rcode; 259 260 /* BIND_UPDATE */ 261 typedef enum __ns_update_operation { 262 ns_uop_delete = 0, 263 ns_uop_add = 1, 264 ns_uop_max = 2 265 } ns_update_operation; 266 267 /* 268 * This structure is used for TSIG authenticated messages 269 */ 270 struct ns_tsig_key { 271 char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 272 unsigned char *data; 273 int len; 274 }; 275 typedef struct ns_tsig_key ns_tsig_key; 276 277 /* 278 * This structure is used for TSIG authenticated TCP messages 279 */ 280 struct ns_tcp_tsig_state { 281 int counter; 282 struct dst_key *key; 283 void *ctx; 284 unsigned char sig[NS_PACKETSZ]; 285 int siglen; 286 }; 287 typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 288 289 #define NS_TSIG_FUDGE 300 290 #define NS_TSIG_TCP_COUNT 100 291 #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 292 293 #define NS_TSIG_ERROR_NO_TSIG -10 294 #define NS_TSIG_ERROR_NO_SPACE -11 295 #define NS_TSIG_ERROR_FORMERR -12 296 297 /* 298 * Currently defined type values for resources and queries. 299 */ 300 typedef enum __ns_type { 301 ns_t_invalid = 0, /* Cookie. */ 302 ns_t_a = 1, /* Host address. */ 303 ns_t_ns = 2, /* Authoritative server. */ 304 ns_t_md = 3, /* Mail destination. */ 305 ns_t_mf = 4, /* Mail forwarder. */ 306 ns_t_cname = 5, /* Canonical name. */ 307 ns_t_soa = 6, /* Start of authority zone. */ 308 ns_t_mb = 7, /* Mailbox domain name. */ 309 ns_t_mg = 8, /* Mail group member. */ 310 ns_t_mr = 9, /* Mail rename name. */ 311 ns_t_null = 10, /* Null resource record. */ 312 ns_t_wks = 11, /* Well known service. */ 313 ns_t_ptr = 12, /* Domain name pointer. */ 314 ns_t_hinfo = 13, /* Host information. */ 315 ns_t_minfo = 14, /* Mailbox information. */ 316 ns_t_mx = 15, /* Mail routing information. */ 317 ns_t_txt = 16, /* Text strings. */ 318 ns_t_rp = 17, /* Responsible person. */ 319 ns_t_afsdb = 18, /* AFS cell database. */ 320 ns_t_x25 = 19, /* X_25 calling address. */ 321 ns_t_isdn = 20, /* ISDN calling address. */ 322 ns_t_rt = 21, /* Router. */ 323 ns_t_nsap = 22, /* NSAP address. */ 324 ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ 325 ns_t_sig = 24, /* Security signature. */ 326 ns_t_key = 25, /* Security key. */ 327 ns_t_px = 26, /* X.400 mail mapping. */ 328 ns_t_gpos = 27, /* Geographical position (withdrawn). */ 329 ns_t_aaaa = 28, /* Ip6 Address. */ 330 ns_t_loc = 29, /* Location Information. */ 331 ns_t_nxt = 30, /* Next domain (security). */ 332 ns_t_eid = 31, /* Endpoint identifier. */ 333 ns_t_nimloc = 32, /* Nimrod Locator. */ 334 ns_t_srv = 33, /* Server Selection. */ 335 ns_t_atma = 34, /* ATM Address */ 336 ns_t_naptr = 35, /* Naming Authority PoinTeR */ 337 ns_t_kx = 36, /* Key Exchange */ 338 ns_t_cert = 37, /* Certification record */ 339 ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ 340 ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ 341 ns_t_sink = 40, /* Kitchen sink (experimentatl) */ 342 ns_t_opt = 41, /* EDNS0 option (meta-RR) */ 343 ns_t_apl = 42, /* Address prefix list (RFC 3123) */ 344 ns_t_tkey = 249, /* Transaction key */ 345 ns_t_tsig = 250, /* Transaction signature. */ 346 ns_t_ixfr = 251, /* Incremental zone transfer. */ 347 ns_t_axfr = 252, /* Transfer zone of authority. */ 348 ns_t_mailb = 253, /* Transfer mailbox records. */ 349 ns_t_maila = 254, /* Transfer mail agent records. */ 350 ns_t_any = 255, /* Wildcard match. */ 351 ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ 352 ns_t_max = 65536 353 } ns_type; 354 355 /* Exclusively a QTYPE? (not also an RTYPE) */ 356 #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 357 (t) == ns_t_mailb || (t) == ns_t_maila) 358 /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 359 #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 360 /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 361 #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 362 #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 363 #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 364 (t) == ns_t_zxfr) 365 366 /* 367 * Values for class field 368 */ 369 typedef enum __ns_class { 370 ns_c_invalid = 0, /* Cookie. */ 371 ns_c_in = 1, /* Internet. */ 372 ns_c_2 = 2, /* unallocated/unsupported. */ 373 ns_c_chaos = 3, /* MIT Chaos-net. */ 374 ns_c_hs = 4, /* MIT Hesiod. */ 375 /* Query class values which do not appear in resource records */ 376 ns_c_none = 254, /* for prereq. sections in update requests */ 377 ns_c_any = 255, /* Wildcard match. */ 378 ns_c_max = 65536 379 } ns_class; 380 381 /* DNSSEC constants. */ 382 383 typedef enum __ns_key_types { 384 ns_kt_rsa = 1, /* key type RSA/MD5 */ 385 ns_kt_dh = 2, /* Diffie Hellman */ 386 ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */ 387 ns_kt_private = 254 /* Private key type starts with OID */ 388 } ns_key_types; 389 390 typedef enum __ns_cert_types { 391 cert_t_pkix = 1, /* PKIX (X.509v3) */ 392 cert_t_spki = 2, /* SPKI */ 393 cert_t_pgp = 3, /* PGP */ 394 cert_t_url = 253, /* URL private type */ 395 cert_t_oid = 254 /* OID private type */ 396 } ns_cert_types; 397 398 /* Flags field of the KEY RR rdata. */ 399 #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ 400 #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ 401 #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ 402 #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ 403 #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ 404 /* The type bits can also be interpreted independently, as single bits: */ 405 #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ 406 #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ 407 #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 408 #define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */ 409 #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ 410 #define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */ 411 #define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */ 412 #define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */ 413 #define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */ 414 #define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */ 415 #define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */ 416 #define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */ 417 #define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */ 418 #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ 419 #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ 420 #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ 421 #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 422 NS_KEY_RESERVED4 | \ 423 NS_KEY_RESERVED5 | \ 424 NS_KEY_RESERVED8 | \ 425 NS_KEY_RESERVED9 | \ 426 NS_KEY_RESERVED10 | \ 427 NS_KEY_RESERVED11 ) 428 #define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */ 429 430 /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 431 #define NS_ALG_MD5RSA 1 /* MD5 with RSA */ 432 #define NS_ALG_DH 2 /* Diffie Hellman KEY */ 433 #define NS_ALG_DSA 3 /* DSA KEY */ 434 #define NS_ALG_DSS NS_ALG_DSA 435 #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ 436 #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ 437 438 /* Protocol values */ 439 /* value 0 is reserved */ 440 #define NS_KEY_PROT_TLS 1 441 #define NS_KEY_PROT_EMAIL 2 442 #define NS_KEY_PROT_DNSSEC 3 443 #define NS_KEY_PROT_IPSEC 4 444 #define NS_KEY_PROT_ANY 255 445 446 /* Signatures */ 447 #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ 448 #define NS_MD5RSA_MAX_BITS 4096 449 /* Total of binary mod and exp */ 450 #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 451 /* Max length of text sig block */ 452 #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 453 #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 454 #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 455 456 #define NS_DSA_SIG_SIZE 41 457 #define NS_DSA_MIN_SIZE 213 458 #define NS_DSA_MAX_BYTES 405 459 460 /* Offsets into SIG record rdata to find various values */ 461 #define NS_SIG_TYPE 0 /* Type flags */ 462 #define NS_SIG_ALG 2 /* Algorithm */ 463 #define NS_SIG_LABELS 3 /* How many labels in name */ 464 #define NS_SIG_OTTL 4 /* Original TTL */ 465 #define NS_SIG_EXPIR 8 /* Expiration time */ 466 #define NS_SIG_SIGNED 12 /* Signature time */ 467 #define NS_SIG_FOOT 16 /* Key footprint */ 468 #define NS_SIG_SIGNER 18 /* Domain name of who signed it */ 469 470 /* How RR types are represented as bit-flags in NXT records */ 471 #define NS_NXT_BITS 8 472 #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 473 #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 474 #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 475 #define NS_NXT_MAX 127 476 477 /* 478 * EDNS0 extended flags, host order. 479 */ 480 #define NS_OPT_DNSSEC_OK 0x8000U 481 482 /* 483 * Inline versions of get/put short/long. Pointer is advanced. 484 */ 485 #define NS_GET16(s, cp) do { \ 486 register const u_char *t_cp = (const u_char *)(cp); \ 487 (s) = ((u_int16_t)t_cp[0] << 8) \ 488 | ((u_int16_t)t_cp[1]) \ 489 ; \ 490 (cp) += NS_INT16SZ; \ 491 } while (0) 492 493 #define NS_GET32(l, cp) do { \ 494 register const u_char *t_cp = (const u_char *)(cp); \ 495 (l) = ((u_int32_t)t_cp[0] << 24) \ 496 | ((u_int32_t)t_cp[1] << 16) \ 497 | ((u_int32_t)t_cp[2] << 8) \ 498 | ((u_int32_t)t_cp[3]) \ 499 ; \ 500 (cp) += NS_INT32SZ; \ 501 } while (0) 502 503 #define NS_PUT16(s, cp) do { \ 504 register u_int16_t t_s = (u_int16_t)(s); \ 505 register u_char *t_cp = (u_char *)(cp); \ 506 *t_cp++ = t_s >> 8; \ 507 *t_cp = t_s; \ 508 (cp) += NS_INT16SZ; \ 509 } while (0) 510 511 #define NS_PUT32(l, cp) do { \ 512 register u_int32_t t_l = (u_int32_t)(l); \ 513 register u_char *t_cp = (u_char *)(cp); \ 514 *t_cp++ = t_l >> 24; \ 515 *t_cp++ = t_l >> 16; \ 516 *t_cp++ = t_l >> 8; \ 517 *t_cp = t_l; \ 518 (cp) += NS_INT32SZ; \ 519 } while (0) 520 521 /* 522 * ANSI C identifier hiding for bind's lib/nameser. 523 */ 524 #define ns_msg_getflag __ns_msg_getflag 525 #define ns_get16 __ns_get16 526 #define ns_get32 __ns_get32 527 #define ns_put16 __ns_put16 528 #define ns_put32 __ns_put32 529 #define ns_initparse __ns_initparse 530 #define ns_skiprr __ns_skiprr 531 #define ns_parserr __ns_parserr 532 #define ns_sprintrr __ns_sprintrr 533 #define ns_sprintrrf __ns_sprintrrf 534 #define ns_format_ttl __ns_format_ttl 535 #define ns_parse_ttl __ns_parse_ttl 536 #define ns_datetosecs __ns_datetosecs 537 #define ns_name_ntol __ns_name_ntol 538 #define ns_name_ntop __ns_name_ntop 539 #define ns_name_pton __ns_name_pton 540 #define ns_name_unpack __ns_name_unpack 541 #define ns_name_pack __ns_name_pack 542 #define ns_name_compress __ns_name_compress 543 #define ns_name_uncompress __ns_name_uncompress 544 #define ns_name_skip __ns_name_skip 545 #define ns_name_rollback __ns_name_rollback 546 #define ns_sign __ns_sign 547 #define ns_sign2 __ns_sign2 548 #define ns_sign_tcp __ns_sign_tcp 549 #define ns_sign_tcp2 __ns_sign_tcp2 550 #define ns_sign_tcp_init __ns_sign_tcp_init 551 #define ns_find_tsig __ns_find_tsig 552 #define ns_verify __ns_verify 553 #define ns_verify_tcp __ns_verify_tcp 554 #define ns_verify_tcp_init __ns_verify_tcp_init 555 #define ns_samedomain __ns_samedomain 556 #define ns_subdomain __ns_subdomain 557 #define ns_makecanon __ns_makecanon 558 #define ns_samename __ns_samename 559 560 561 int ns_msg_getflag __P((ns_msg, int)); 562 u_int ns_get16 __P((const u_char *)); 563 u_long ns_get32 __P((const u_char *)); 564 void ns_put16 __P((u_int, u_char *)); 565 void ns_put32 __P((u_long, u_char *)); 566 int ns_initparse __P((const u_char *, int, ns_msg *)); 567 int ns_skiprr __P((const u_char *, const u_char *, ns_sect, int)); 568 int ns_parserr __P((ns_msg *, ns_sect, int, ns_rr *)); 569 int ns_sprintrr __P((const ns_msg *, const ns_rr *, 570 const char *, const char *, char *, size_t)); 571 int ns_sprintrrf __P((const u_char *, size_t, const char *, 572 ns_class, ns_type, u_long, const u_char *, 573 size_t, const char *, const char *, 574 char *, size_t)); 575 int ns_format_ttl __P((u_long, char *, size_t)); 576 int ns_parse_ttl __P((const char *, u_long *)); 577 u_int32_t ns_datetosecs __P((const char *cp, int *errp)); 578 int ns_name_ntol __P((const u_char *, u_char *, size_t)); 579 int ns_name_ntop __P((const u_char *, char *, size_t)); 580 int ns_name_pton __P((const char *, u_char *, size_t)); 581 int ns_name_unpack __P((const u_char *, const u_char *, 582 const u_char *, u_char *, size_t)); 583 int ns_name_pack __P((const u_char *, u_char *, int, 584 const u_char **, const u_char **)); 585 int ns_name_uncompress __P((const u_char *, const u_char *, 586 const u_char *, char *, size_t)); 587 int ns_name_compress __P((const char *, u_char *, size_t, 588 const u_char **, const u_char **)); 589 int ns_name_skip __P((const u_char **, const u_char *)); 590 void ns_name_rollback __P((const u_char *, const u_char **, 591 const u_char **)); 592 int ns_sign __P((u_char *, int *, int, int, void *, 593 const u_char *, int, u_char *, int *, time_t)); 594 int ns_sign2 __P((u_char *, int *, int, int, void *, 595 const u_char *, int, u_char *, int *, time_t, 596 u_char **, u_char **)); 597 int ns_sign_tcp __P((u_char *, int *, int, int, 598 ns_tcp_tsig_state *, int)); 599 int ns_sign_tcp2 __P((u_char *, int *, int, int, 600 ns_tcp_tsig_state *, int, 601 u_char **, u_char **)); 602 int ns_sign_tcp_init __P((void *, const u_char *, int, 603 ns_tcp_tsig_state *)); 604 u_char *ns_find_tsig __P((u_char *, u_char *)); 605 int ns_verify __P((u_char *, int *, void *, 606 const u_char *, int, u_char *, int *, 607 time_t *, int)); 608 int ns_verify_tcp __P((u_char *, int *, ns_tcp_tsig_state *, int)); 609 int ns_verify_tcp_init __P((void *, const u_char *, int, 610 ns_tcp_tsig_state *)); 611 int ns_samedomain __P((const char *, const char *)); 612 int ns_subdomain __P((const char *, const char *)); 613 int ns_makecanon __P((const char *, char *, size_t)); 614 int ns_samename __P((const char *, const char *)); 615 616 617 #endif /* !REPLACE_ARPA_NAMESER_H_ */ 618