Dr Andrew Scott
G7VAV
Senior Lecturer
School of Computing
and Communications
D35 InfoLab21
Lancaster University
Lancaster, LA1 4WA
United Kingdom
School of Computing
and Communications
D35 InfoLab21
Lancaster University
Lancaster, LA1 4WA
United Kingdom
| April 2024 | ||||||
| Mo | Tu | We | Th | Fr | Sa | Su |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 | 1 | 2 | 3 | 4 | 5 |
| 6 | 7 | 8 | 9 | 10 | 11 | 12 |
nameser.h
001: /* 002: * Copyright (c) 1983, 1989, 1993 003: * The Regents of the University of California. All rights reserved. 004: * 005: * Redistribution and use in source and binary forms, with or without 006: * modification, are permitted provided that the following conditions 007: * are met: 008: * 1. Redistributions of source code must retain the above copyright 009: * notice, this list of conditions and the following disclaimer. 010: * 2. Redistributions in binary form must reproduce the above copyright 011: * notice, this list of conditions and the following disclaimer in the 012: * documentation and/or other materials provided with the distribution. 013: * 4. Neither the name of the University nor the names of its contributors 014: * may be used to endorse or promote products derived from this software 015: * without specific prior written permission. 016: * 017: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 018: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 019: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 020: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 021: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 022: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 023: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 024: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 025: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 026: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 027: * SUCH DAMAGE. 028: */ 029: 030: /* 031: * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 032: * Copyright (c) 1996-1999 by Internet Software Consortium. 033: * 034: * Permission to use, copy, modify, and distribute this software for any 035: * purpose with or without fee is hereby granted, provided that the above 036: * copyright notice and this permission notice appear in all copies. 037: * 038: * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS 039: * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES 040: * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE 041: * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 042: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 043: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 044: * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 045: * SOFTWARE. 046: */ 047: 048: /* 049: * $BINDId: nameser.h,v 8.37 2000/03/30 21:16:49 vixie Exp $ 050: */ 051: 052: #ifndef _ARPA_NAMESER_H_ 053: #define _ARPA_NAMESER_H_ 054: 055: /*! \file */ 056: 057: #define BIND_4_COMPAT 058: 059: #include <sys/param.h> 060: #if (!defined(BSD)) || (BSD < 199306) 061: # include <sys/bitypes.h> 062: #else 063: # include <sys/types.h> 064: #endif 065: #include <sys/cdefs.h> 066: 067: /*% 068: * Revision information. This is the release date in YYYYMMDD format. 069: * It can change every day so the right thing to do with it is use it 070: * in preprocessor commands such as "#if (__NAMESER > 19931104)". Do not 071: * compare for equality; rather, use it to determine whether your libbind.a 072: * contains a new enough lib/nameser/ to support the feature you need. 073: */ 074: 075: #define __NAMESER 19991006 /*%< New interface version stamp. */ 076: /* 077: * Define constants based on RFC 883, RFC 1034, RFC 1035 078: */ 079: #define NS_PACKETSZ 512 /*%< default UDP packet size */ 080: #define NS_MAXDNAME 1025 /*%< maximum domain name */ 081: #define NS_MAXMSG 65535 /*%< maximum message size */ 082: #define NS_MAXCDNAME 255 /*%< maximum compressed domain name */ 083: #define NS_MAXLABEL 63 /*%< maximum length of domain label */ 084: #define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */ 085: #define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */ 086: #define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */ 087: #define NS_INT32SZ 4 /*%< #/bytes of data in a u_int32_t */ 088: #define NS_INT16SZ 2 /*%< #/bytes of data in a u_int16_t */ 089: #define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */ 090: #define NS_INADDRSZ 4 /*%< IPv4 T_A */ 091: #define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */ 092: #define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */ 093: #define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */ 094: /* 095: * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() 096: * in synch with it. 097: */ 098: typedef enum __ns_sect { 099: ns_s_qd = 0, /*%< Query: Question. */ 100: ns_s_zn = 0, /*%< Update: Zone. */ 101: ns_s_an = 1, /*%< Query: Answer. */ 102: ns_s_pr = 1, /*%< Update: Prerequisites. */ 103: ns_s_ns = 2, /*%< Query: Name servers. */ 104: ns_s_ud = 2, /*%< Update: Update. */ 105: ns_s_ar = 3, /*%< Query|Update: Additional records. */ 106: ns_s_max = 4 107: } ns_sect; 108: 109: /*% 110: * This is a message handle. It is caller allocated and has no dynamic data. 111: * This structure is intended to be opaque to all but ns_parse.c, thus the 112: * leading _'s on the member names. Use the accessor functions, not the _'s. 113: */ 114: typedef struct __ns_msg { 115: const u_char *_msg, *_eom; 116: u_int16_t _id, _flags, _counts[ns_s_max]; 117: const u_char *_sections[ns_s_max]; 118: ns_sect _sect; 119: int _rrnum; 120: const u_char *_msg_ptr; 121: } ns_msg; 122: 123: /* Private data structure - do not use from outside library. */ 124: struct _ns_flagdata { int mask, shift; }; 125: extern const struct _ns_flagdata _ns_flagdata[]; 126: 127: /* Accessor macros - this is part of the public interface. */ 128: 129: #define ns_msg_id(handle) ((handle)._id + 0) 130: #define ns_msg_base(handle) ((handle)._msg + 0) 131: #define ns_msg_end(handle) ((handle)._eom + 0) 132: #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) 133: #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) 134: 135: /*% 136: * This is a parsed record. It is caller allocated and has no dynamic data. 137: */ 138: typedef struct __ns_rr { 139: char name[NS_MAXDNAME]; 140: u_int16_t type; 141: u_int16_t rr_class; 142: u_int32_t ttl; 143: u_int16_t rdlength; 144: const u_char * rdata; 145: } ns_rr; 146: 147: /* Accessor macros - this is part of the public interface. */ 148: #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") 149: #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) 150: #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) 151: #define ns_rr_ttl(rr) ((rr).ttl + 0) 152: #define ns_rr_rdlen(rr) ((rr).rdlength + 0) 153: #define ns_rr_rdata(rr) ((rr).rdata + 0) 154: 155: /*% 156: * These don't have to be in the same order as in the packet flags word, 157: * and they can even overlap in some cases, but they will need to be kept 158: * in synch with ns_parse.c:ns_flagdata[]. 159: */ 160: typedef enum __ns_flag { 161: ns_f_qr, /*%< Question/Response. */ 162: ns_f_opcode, /*%< Operation code. */ 163: ns_f_aa, /*%< Authoritative Answer. */ 164: ns_f_tc, /*%< Truncation occurred. */ 165: ns_f_rd, /*%< Recursion Desired. */ 166: ns_f_ra, /*%< Recursion Available. */ 167: ns_f_z, /*%< MBZ. */ 168: ns_f_ad, /*%< Authentic Data (DNSSEC). */ 169: ns_f_cd, /*%< Checking Disabled (DNSSEC). */ 170: ns_f_rcode, /*%< Response code. */ 171: ns_f_max 172: } ns_flag; 173: 174: /*% 175: * Currently defined opcodes. 176: */ 177: typedef enum __ns_opcode { 178: ns_o_query = 0, /*%< Standard query. */ 179: ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */ 180: ns_o_status = 2, /*%< Name server status query (unsupported). */ 181: /* Opcode 3 is undefined/reserved. */ 182: ns_o_notify = 4, /*%< Zone change notification. */ 183: ns_o_update = 5, /*%< Zone update message. */ 184: ns_o_max = 6 185: } ns_opcode; 186: 187: /*% 188: * Currently defined response codes. 189: */ 190: typedef enum __ns_rcode { 191: ns_r_noerror = 0, /*%< No error occurred. */ 192: ns_r_formerr = 1, /*%< Format error. */ 193: ns_r_servfail = 2, /*%< Server failure. */ 194: ns_r_nxdomain = 3, /*%< Name error. */ 195: ns_r_notimpl = 4, /*%< Unimplemented. */ 196: ns_r_refused = 5, /*%< Operation refused. */ 197: /* these are for BIND_UPDATE */ 198: ns_r_yxdomain = 6, /*%< Name exists */ 199: ns_r_yxrrset = 7, /*%< RRset exists */ 200: ns_r_nxrrset = 8, /*%< RRset does not exist */ 201: ns_r_notauth = 9, /*%< Not authoritative for zone */ 202: ns_r_notzone = 10, /*%< Zone of record different from zone section */ 203: ns_r_max = 11, 204: /* The following are EDNS extended rcodes */ 205: ns_r_badvers = 16, 206: /* The following are TSIG errors */ 207: ns_r_badsig = 16, 208: ns_r_badkey = 17, 209: ns_r_badtime = 18 210: } ns_rcode; 211: 212: /* BIND_UPDATE */ 213: typedef enum __ns_update_operation { 214: ns_uop_delete = 0, 215: ns_uop_add = 1, 216: ns_uop_max = 2 217: } ns_update_operation; 218: 219: /*% 220: * This structure is used for TSIG authenticated messages 221: */ 222: struct ns_tsig_key { 223: char name[NS_MAXDNAME], alg[NS_MAXDNAME]; 224: unsigned char *data; 225: int len; 226: }; 227: typedef struct ns_tsig_key ns_tsig_key; 228: 229: /*% 230: * This structure is used for TSIG authenticated TCP messages 231: */ 232: struct ns_tcp_tsig_state { 233: int counter; 234: struct dst_key *key; 235: void *ctx; 236: unsigned char sig[NS_PACKETSZ]; 237: int siglen; 238: }; 239: typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; 240: 241: #define NS_TSIG_FUDGE 300 242: #define NS_TSIG_TCP_COUNT 100 243: #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" 244: 245: #define NS_TSIG_ERROR_NO_TSIG -10 246: #define NS_TSIG_ERROR_NO_SPACE -11 247: #define NS_TSIG_ERROR_FORMERR -12 248: 249: /*% 250: * Currently defined type values for resources and queries. 251: */ 252: typedef enum __ns_type { 253: ns_t_invalid = 0, /*%< Cookie. */ 254: ns_t_a = 1, /*%< Host address. */ 255: ns_t_ns = 2, /*%< Authoritative server. */ 256: ns_t_md = 3, /*%< Mail destination. */ 257: ns_t_mf = 4, /*%< Mail forwarder. */ 258: ns_t_cname = 5, /*%< Canonical name. */ 259: ns_t_soa = 6, /*%< Start of authority zone. */ 260: ns_t_mb = 7, /*%< Mailbox domain name. */ 261: ns_t_mg = 8, /*%< Mail group member. */ 262: ns_t_mr = 9, /*%< Mail rename name. */ 263: ns_t_null = 10, /*%< Null resource record. */ 264: ns_t_wks = 11, /*%< Well known service. */ 265: ns_t_ptr = 12, /*%< Domain name pointer. */ 266: ns_t_hinfo = 13, /*%< Host information. */ 267: ns_t_minfo = 14, /*%< Mailbox information. */ 268: ns_t_mx = 15, /*%< Mail routing information. */ 269: ns_t_txt = 16, /*%< Text strings. */ 270: ns_t_rp = 17, /*%< Responsible person. */ 271: ns_t_afsdb = 18, /*%< AFS cell database. */ 272: ns_t_x25 = 19, /*%< X_25 calling address. */ 273: ns_t_isdn = 20, /*%< ISDN calling address. */ 274: ns_t_rt = 21, /*%< Router. */ 275: ns_t_nsap = 22, /*%< NSAP address. */ 276: ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */ 277: ns_t_sig = 24, /*%< Security signature. */ 278: ns_t_key = 25, /*%< Security key. */ 279: ns_t_px = 26, /*%< X.400 mail mapping. */ 280: ns_t_gpos = 27, /*%< Geographical position (withdrawn). */ 281: ns_t_aaaa = 28, /*%< Ip6 Address. */ 282: ns_t_loc = 29, /*%< Location Information. */ 283: ns_t_nxt = 30, /*%< Next domain (security). */ 284: ns_t_eid = 31, /*%< Endpoint identifier. */ 285: ns_t_nimloc = 32, /*%< Nimrod Locator. */ 286: ns_t_srv = 33, /*%< Server Selection. */ 287: ns_t_atma = 34, /*%< ATM Address */ 288: ns_t_naptr = 35, /*%< Naming Authority PoinTeR */ 289: ns_t_kx = 36, /*%< Key Exchange */ 290: ns_t_cert = 37, /*%< Certification record */ 291: ns_t_a6 = 38, /*%< IPv6 address (deprecated, use ns_t_aaaa) */ 292: ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */ 293: ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */ 294: ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */ 295: ns_t_apl = 42, /*%< Address prefix list (RFC3123) */ 296: ns_t_tkey = 249, /*%< Transaction key */ 297: ns_t_tsig = 250, /*%< Transaction signature. */ 298: ns_t_ixfr = 251, /*%< Incremental zone transfer. */ 299: ns_t_axfr = 252, /*%< Transfer zone of authority. */ 300: ns_t_mailb = 253, /*%< Transfer mailbox records. */ 301: ns_t_maila = 254, /*%< Transfer mail agent records. */ 302: ns_t_any = 255, /*%< Wildcard match. */ 303: ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */ 304: ns_t_max = 65536 305: } ns_type; 306: 307: /* Exclusively a QTYPE? (not also an RTYPE) */ 308: #define ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \ 309: (t) == ns_t_mailb || (t) == ns_t_maila) 310: /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */ 311: #define ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt) 312: /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */ 313: #define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t)) 314: #define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr) 315: #define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \ 316: (t) == ns_t_zxfr) 317: 318: /*% 319: * Values for class field 320: */ 321: typedef enum __ns_class { 322: ns_c_invalid = 0, /*%< Cookie. */ 323: ns_c_in = 1, /*%< Internet. */ 324: ns_c_2 = 2, /*%< unallocated/unsupported. */ 325: ns_c_chaos = 3, /*%< MIT Chaos-net. */ 326: ns_c_hs = 4, /*%< MIT Hesiod. */ 327: /* Query class values which do not appear in resource records */ 328: ns_c_none = 254, /*%< for prereq. sections in update requests */ 329: ns_c_any = 255, /*%< Wildcard match. */ 330: ns_c_max = 65536 331: } ns_class; 332: 333: /* DNSSEC constants. */ 334: 335: typedef enum __ns_key_types { 336: ns_kt_rsa = 1, /*%< key type RSA/MD5 */ 337: ns_kt_dh = 2, /*%< Diffie Hellman */ 338: ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */ 339: ns_kt_private = 254 /*%< Private key type starts with OID */ 340: } ns_key_types; 341: 342: typedef enum __ns_cert_types { 343: cert_t_pkix = 1, /*%< PKIX (X.509v3) */ 344: cert_t_spki = 2, /*%< SPKI */ 345: cert_t_pgp = 3, /*%< PGP */ 346: cert_t_url = 253, /*%< URL private type */ 347: cert_t_oid = 254 /*%< OID private type */ 348: } ns_cert_types; 349: 350: /* Flags field of the KEY RR rdata. */ 351: #define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */ 352: #define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */ 353: #define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */ 354: #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */ 355: #define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */ 356: /* The type bits can also be interpreted independently, as single bits: */ 357: #define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */ 358: #define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */ 359: #define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */ 360: #define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */ 361: #define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */ 362: #define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */ 363: #define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */ 364: #define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */ 365: #define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */ 366: #define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */ 367: #define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */ 368: #define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */ 369: #define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */ 370: #define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */ 371: #define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */ 372: #define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */ 373: #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \ 374: NS_KEY_RESERVED4 | \ 375: NS_KEY_RESERVED5 | \ 376: NS_KEY_RESERVED8 | \ 377: NS_KEY_RESERVED9 | \ 378: NS_KEY_RESERVED10 | \ 379: NS_KEY_RESERVED11 ) 380: #define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */ 381: /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 382: #define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */ 383: #define NS_ALG_DH 2 /*%< Diffie Hellman KEY */ 384: #define NS_ALG_DSA 3 /*%< DSA KEY */ 385: #define NS_ALG_DSS NS_ALG_DSA 386: #define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */ 387: #define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */ 388: /* Protocol values */ 389: /* value 0 is reserved */ 390: #define NS_KEY_PROT_TLS 1 391: #define NS_KEY_PROT_EMAIL 2 392: #define NS_KEY_PROT_DNSSEC 3 393: #define NS_KEY_PROT_IPSEC 4 394: #define NS_KEY_PROT_ANY 255 395: 396: /* Signatures */ 397: #define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */ 398: #define NS_MD5RSA_MAX_BITS 4096 399: /* Total of binary mod and exp */ 400: #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) 401: /* Max length of text sig block */ 402: #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) 403: #define NS_MD5RSA_MIN_SIZE ((NS_MD5RSA_MIN_BITS+7)/8) 404: #define NS_MD5RSA_MAX_SIZE ((NS_MD5RSA_MAX_BITS+7)/8) 405: 406: #define NS_DSA_SIG_SIZE 41 407: #define NS_DSA_MIN_SIZE 213 408: #define NS_DSA_MAX_BYTES 405 409: 410: /* Offsets into SIG record rdata to find various values */ 411: #define NS_SIG_TYPE 0 /*%< Type flags */ 412: #define NS_SIG_ALG 2 /*%< Algorithm */ 413: #define NS_SIG_LABELS 3 /*%< How many labels in name */ 414: #define NS_SIG_OTTL 4 /*%< Original TTL */ 415: #define NS_SIG_EXPIR 8 /*%< Expiration time */ 416: #define NS_SIG_SIGNED 12 /*%< Signature time */ 417: #define NS_SIG_FOOT 16 /*%< Key footprint */ 418: #define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */ 419: /* How RR types are represented as bit-flags in NXT records */ 420: #define NS_NXT_BITS 8 421: #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) 422: #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) 423: #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) 424: #define NS_NXT_MAX 127 425: 426: /*% 427: * EDNS0 extended flags and option codes, host order. 428: */ 429: #define NS_OPT_DNSSEC_OK 0x8000U 430: #define NS_OPT_NSID 3 431: 432: /*% 433: * Inline versions of get/put short/long. Pointer is advanced. 434: */ 435: #define NS_GET16(s, cp) do { \ 436: register const u_char *t_cp = (const u_char *)(cp); \ 437: (s) = ((u_int16_t)t_cp[0] << 8) \ 438: | ((u_int16_t)t_cp[1]) \ 439: ; \ 440: (cp) += NS_INT16SZ; \ 441: } while (0) 442: 443: #define NS_GET32(l, cp) do { \ 444: register const u_char *t_cp = (const u_char *)(cp); \ 445: (l) = ((u_int32_t)t_cp[0] << 24) \ 446: | ((u_int32_t)t_cp[1] << 16) \ 447: | ((u_int32_t)t_cp[2] << 8) \ 448: | ((u_int32_t)t_cp[3]) \ 449: ; \ 450: (cp) += NS_INT32SZ; \ 451: } while (0) 452: 453: #define NS_PUT16(s, cp) do { \ 454: register u_int16_t t_s = (u_int16_t)(s); \ 455: register u_char *t_cp = (u_char *)(cp); \ 456: *t_cp++ = t_s >> 8; \ 457: *t_cp = t_s; \ 458: (cp) += NS_INT16SZ; \ 459: } while (0) 460: 461: #define NS_PUT32(l, cp) do { \ 462: register u_int32_t t_l = (u_int32_t)(l); \ 463: register u_char *t_cp = (u_char *)(cp); \ 464: *t_cp++ = t_l >> 24; \ 465: *t_cp++ = t_l >> 16; \ 466: *t_cp++ = t_l >> 8; \ 467: *t_cp = t_l; \ 468: (cp) += NS_INT32SZ; \ 469: } while (0) 470: 471: __BEGIN_DECLS 472: int ns_msg_getflag (ns_msg, int) __THROW; 473: u_int ns_get16 (const u_char *) __THROW; 474: u_long ns_get32 (const u_char *) __THROW; 475: void ns_put16 (u_int, u_char *) __THROW; 476: void ns_put32 (u_long, u_char *) __THROW; 477: int ns_initparse (const u_char *, int, ns_msg *) __THROW; 478: int ns_skiprr (const u_char *, const u_char *, ns_sect, int) 479: __THROW; 480: int ns_parserr (ns_msg *, ns_sect, int, ns_rr *) __THROW; 481: int ns_sprintrr (const ns_msg *, const ns_rr *, 482: const char *, const char *, char *, size_t) 483: __THROW; 484: int ns_sprintrrf (const u_char *, size_t, const char *, 485: ns_class, ns_type, u_long, const u_char *, 486: size_t, const char *, const char *, 487: char *, size_t) __THROW; 488: int ns_format_ttl (u_long, char *, size_t) __THROW; 489: int ns_parse_ttl (const char *, u_long *) __THROW; 490: u_int32_t ns_datetosecs (const char *, int *) __THROW; 491: int ns_name_ntol (const u_char *, u_char *, size_t) __THROW; 492: int ns_name_ntop (const u_char *, char *, size_t) __THROW; 493: int ns_name_pton (const char *, u_char *, size_t) __THROW; 494: int ns_name_unpack (const u_char *, const u_char *, 495: const u_char *, u_char *, size_t) __THROW; 496: int ns_name_pack (const u_char *, u_char *, int, 497: const u_char **, const u_char **) __THROW; 498: int ns_name_uncompress (const u_char *, const u_char *, 499: const u_char *, char *, size_t) __THROW; 500: int ns_name_compress (const char *, u_char *, size_t, 501: const u_char **, const u_char **) __THROW; 502: int ns_name_skip (const u_char **, const u_char *) __THROW; 503: void ns_name_rollback (const u_char *, const u_char **, 504: const u_char **) __THROW; 505: int ns_sign (u_char *, int *, int, int, void *, 506: const u_char *, int, u_char *, int *, time_t) __THROW; 507: int ns_sign2 (u_char *, int *, int, int, void *, 508: const u_char *, int, u_char *, int *, time_t, 509: u_char **, u_char **) __THROW; 510: int ns_sign_tcp (u_char *, int *, int, int, 511: ns_tcp_tsig_state *, int) __THROW; 512: int ns_sign_tcp2 (u_char *, int *, int, int, 513: ns_tcp_tsig_state *, int, 514: u_char **, u_char **) __THROW; 515: int ns_sign_tcp_init (void *, const u_char *, int, 516: ns_tcp_tsig_state *) __THROW; 517: u_char *ns_find_tsig (u_char *, u_char *) __THROW; 518: int ns_verify (u_char *, int *, void *, const u_char *, int, 519: u_char *, int *, time_t *, int) __THROW; 520: int ns_verify_tcp (u_char *, int *, ns_tcp_tsig_state *, int) 521: __THROW; 522: int ns_verify_tcp_init (void *, const u_char *, int, 523: ns_tcp_tsig_state *) __THROW; 524: int ns_samedomain (const char *, const char *) __THROW; 525: int ns_subdomain (const char *, const char *) __THROW; 526: int ns_makecanon (const char *, char *, size_t) __THROW; 527: int ns_samename (const char *, const char *) __THROW; 528: __END_DECLS 529: 530: #ifdef BIND_4_COMPAT 531: #include <arpa/nameser_compat.h> 532: #endif 533: 534: #endif /* !_ARPA_NAMESER_H_ */ 535: /*! \file */ 536:
for client
3.12.71.237
© Andrew Scott 2006 -
2024,
All Rights Reserved
All Rights Reserved
Andrew Scott