| t2ex/bsd_source/lib/libc/src_bsd/include/arpa/nameser.h | bare source | permlink (0.04 seconds) |
1: /* $OpenBSD: nameser.h,v 1.11 2005/12/20 02:06:56 millert Exp $ */ 2: 3: /* 4: * ++Copyright++ 1983, 1989, 1993 5: * - 6: * Copyright (c) 1983, 1989, 1993 7: * The Regents of the University of California. All rights reserved. 8: * 9: * Redistribution and use in source and binary forms, with or without 10: * modification, are permitted provided that the following conditions 11: * are met: 12: * 1. Redistributions of source code must retain the above copyright 13: * notice, this list of conditions and the following disclaimer. 14: * 2. Redistributions in binary form must reproduce the above copyright 15: * notice, this list of conditions and the following disclaimer in the 16: * documentation and/or other materials provided with the distribution. 17: * 3. 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: * Portions Copyright (c) 1993 by Digital Equipment Corporation. 34: * 35: * Permission to use, copy, modify, and distribute this software for any 36: * purpose with or without fee is hereby granted, provided that the above 37: * copyright notice and this permission notice appear in all copies, and that 38: * the name of Digital Equipment Corporation not be used in advertising or 39: * publicity pertaining to distribution of the document or software without 40: * specific, written prior permission. 41: * 42: * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 43: * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 44: * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 45: * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 46: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 47: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 48: * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 49: * SOFTWARE. 50: * - 51: * Portions Copyright (c) 1995 by International Business Machines, Inc. 52: * 53: * International Business Machines, Inc. (hereinafter called IBM) grants 54: * permission under its copyrights to use, copy, modify, and distribute this 55: * Software with or without fee, provided that the above copyright notice and 56: * all paragraphs of this notice appear in all copies, and that the name of IBM 57: * not be used in connection with the marketing of any product incorporating 58: * the Software or modifications thereof, without specific, written prior 59: * permission. 60: * 61: * To the extent it has a right to do so, IBM grants an immunity from suit 62: * under its patents, if any, for the use, sale or manufacture of products to 63: * the extent that such products are used for performing Domain Name System 64: * dynamic updates in TCP/IP networks by means of the Software. No immunity is 65: * granted for any product per se or for any other function of any product. 66: * 67: * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, 68: * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 69: * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, 70: * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING 71: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN 72: * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. 73: * --Copyright-- 74: */ 75: 76: /* 77: * @(#)nameser.h 8.1 (Berkeley) 6/2/93 78: * $From: nameser.h,v 8.11 1996/10/08 04:51:02 vixie Exp $ 79: */ 80: 81: #ifndef _NAMESER_H_ 82: #define _NAMESER_H_ 83: 84: #include <sys/cdefs.h> 85: #include <sys/param.h> 86: 87: /* 88: * revision information. this is the release date in YYYYMMDD format. 89: * it can change every day so the right thing to do with it is use it 90: * in preprocessor commands such as "#if (__BIND > 19931104)". do not 91: * compare for equality; rather, use it to determine whether your resolver 92: * is new enough to contain a certain feature. 93: */ 94: 95: #define __BIND 19960801 /* interface version stamp */ 96: 97: /* 98: * Define constants based on rfc883 99: */ 100: #define PACKETSZ 512 /* maximum packet size */ 101: #define MAXDNAME 1025 /* maximum presentation domain name */ 102: #define MAXCDNAME 255 /* maximum compressed domain name */ 103: #define MAXLABEL 63 /* maximum length of domain label */ 104: #define HFIXEDSZ 12 /* #/bytes of fixed data in header */ 105: #define QFIXEDSZ 4 /* #/bytes of fixed data in query */ 106: #define RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ 107: #define INT32SZ 4 /* for systems without 32-bit ints */ 108: #define INT16SZ 2 /* for systems without 16-bit ints */ 109: #define INADDRSZ 4 /* IPv4 T_A */ 110: #define IN6ADDRSZ 16 /* IPv6 T_AAAA */ 111: 112: /* 113: * Internet nameserver port number 114: */ 115: #define NAMESERVER_PORT 53 116: 117: /* 118: * Currently defined opcodes 119: */ 120: #define QUERY 0x0 /* standard query */ 121: #define IQUERY 0x1 /* inverse query */ 122: #define STATUS 0x2 /* nameserver status query */ 123: /*#define xxx 0x3*/ /* 0x3 reserved */ 124: #define NS_NOTIFY_OP 0x4 /* notify secondary of SOA change */ 125: /* 126: * Currently defined response codes 127: */ 128: #define NOERROR 0 /* no error */ 129: #define FORMERR 1 /* format error */ 130: #define SERVFAIL 2 /* server failure */ 131: #define NXDOMAIN 3 /* non existent domain */ 132: #define NOTIMP 4 /* not implemented */ 133: #define REFUSED 5 /* query refused */ 134: 135: /* 136: * Type values for resources and queries 137: */ 138: #define T_A 1 /* host address */ 139: #define T_NS 2 /* authoritative server */ 140: #define T_MD 3 /* mail destination */ 141: #define T_MF 4 /* mail forwarder */ 142: #define T_CNAME 5 /* canonical name */ 143: #define T_SOA 6 /* start of authority zone */ 144: #define T_MB 7 /* mailbox domain name */ 145: #define T_MG 8 /* mail group member */ 146: #define T_MR 9 /* mail rename name */ 147: #define T_NULL 10 /* null resource record */ 148: #define T_WKS 11 /* well known service */ 149: #define T_PTR 12 /* domain name pointer */ 150: #define T_HINFO 13 /* host information */ 151: #define T_MINFO 14 /* mailbox information */ 152: #define T_MX 15 /* mail routing information */ 153: #define T_TXT 16 /* text strings */ 154: #define T_RP 17 /* responsible person */ 155: #define T_AFSDB 18 /* AFS cell database */ 156: #define T_X25 19 /* X_25 calling address */ 157: #define T_ISDN 20 /* ISDN calling address */ 158: #define T_RT 21 /* router */ 159: #define T_NSAP 22 /* NSAP address */ 160: #define T_NSAP_PTR 23 /* reverse NSAP lookup (deprecated) */ 161: #define T_SIG 24 /* security signature */ 162: #define T_KEY 25 /* security key */ 163: #define T_PX 26 /* X.400 mail mapping */ 164: #define T_GPOS 27 /* geographical position (withdrawn) */ 165: #define T_AAAA 28 /* IP6 Address */ 166: #define T_LOC 29 /* Location Information */ 167: #define T_NXT 30 /* Next Valid Name in Zone */ 168: #define T_EID 31 /* Endpoint identifier */ 169: #define T_NIMLOC 32 /* Nimrod locator */ 170: #define T_SRV 33 /* Server selection */ 171: #define T_ATMA 34 /* ATM Address */ 172: #define T_NAPTR 35 /* Naming Authority PoinTeR */ 173: #define T_KX 36 /* Key Exchanger */ 174: #define T_CERT 37 /* CERT */ 175: #define T_A6 38 /* A6 */ 176: #define T_DNAME 39 /* DNAME */ 177: #define T_SINK 40 /* SINK */ 178: #define T_OPT 41 /* OPT pseudo-RR, RFC2671 */ 179: #define T_APL 42 /* APL */ 180: #define T_DS 43 /* Delegation Signer */ 181: #define T_SSHFP 44 /* SSH Key Fingerprint */ 182: #define T_RRSIG 46 /* RRSIG */ 183: #define T_NSEC 47 /* NSEC */ 184: #define T_DNSKEY 48 /* DNSKEY */ 185: /* non standard */ 186: #define T_UINFO 100 /* user (finger) information */ 187: #define T_UID 101 /* user ID */ 188: #define T_GID 102 /* group ID */ 189: #define T_UNSPEC 103 /* Unspecified format (binary data) */ 190: /* Query type values which do not appear in resource records */ 191: #define T_TKEY 249 /* Transaction Key */ 192: #define T_TSIG 250 /* Transaction Signature */ 193: #define T_IXFR 251 /* incremental zone transfer */ 194: #define T_AXFR 252 /* transfer zone of authority */ 195: #define T_MAILB 253 /* transfer mailbox records */ 196: #define T_MAILA 254 /* transfer mail agent records */ 197: #define T_ANY 255 /* wildcard match */ 198: 199: /* 200: * Values for class field 201: */ 202: 203: #define C_IN 1 /* the arpa internet */ 204: #define C_CHAOS 3 /* for chaos net (MIT) */ 205: #define C_HS 4 /* for Hesiod name server (MIT) (XXX) */ 206: /* Query class values which do not appear in resource records */ 207: #define C_ANY 255 /* wildcard match */ 208: 209: /* 210: * Flags field of the KEY RR rdata 211: */ 212: #define KEYFLAG_TYPEMASK 0xC000 /* Mask for "type" bits */ 213: #define KEYFLAG_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ 214: #define KEYFLAG_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ 215: #define KEYFLAG_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ 216: #define KEYFLAG_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ 217: /* The type bits can also be interpreted independently, as single bits: */ 218: #define KEYFLAG_NO_AUTH 0x8000 /* Key not usable for authentication */ 219: #define KEYFLAG_NO_CONF 0x4000 /* Key not usable for confidentiality */ 220: 221: #define KEYFLAG_EXPERIMENTAL 0x2000 /* Security is *mandatory* if bit=0 */ 222: #define KEYFLAG_RESERVED3 0x1000 /* reserved - must be zero */ 223: #define KEYFLAG_RESERVED4 0x0800 /* reserved - must be zero */ 224: #define KEYFLAG_USERACCOUNT 0x0400 /* key is assoc. with a user acct */ 225: #define KEYFLAG_ENTITY 0x0200 /* key is assoc. with entity eg host */ 226: #define KEYFLAG_ZONEKEY 0x0100 /* key is zone key for the zone named */ 227: #define KEYFLAG_IPSEC 0x0080 /* key is for IPSEC use (host or user)*/ 228: #define KEYFLAG_EMAIL 0x0040 /* key is for email (MIME security) */ 229: #define KEYFLAG_RESERVED10 0x0020 /* reserved - must be zero */ 230: #define KEYFLAG_RESERVED11 0x0010 /* reserved - must be zero */ 231: #define KEYFLAG_SIGNATORYMASK 0x000F /* key can sign DNS RR's of same name */ 232: 233: #define KEYFLAG_RESERVED_BITMASK ( KEYFLAG_RESERVED3 | \ 234: KEYFLAG_RESERVED4 | \ 235: KEYFLAG_RESERVED10| KEYFLAG_RESERVED11) 236: 237: /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ 238: #define ALGORITHM_MD5RSA 1 /* MD5 with RSA */ 239: #define ALGORITHM_EXPIRE_ONLY 253 /* No alg, no security */ 240: #define ALGORITHM_PRIVATE_OID 254 /* Key begins with OID indicating alg */ 241: 242: /* Signatures */ 243: /* Size of a mod or exp in bits */ 244: #define MIN_MD5RSA_KEY_PART_BITS 512 245: #define MAX_MD5RSA_KEY_PART_BITS 2552 246: /* Total of binary mod and exp, bytes */ 247: #define MAX_MD5RSA_KEY_BYTES ((MAX_MD5RSA_KEY_PART_BITS+7/8)*2+3) 248: /* Max length of text sig block */ 249: #define MAX_KEY_BASE64 (((MAX_MD5RSA_KEY_BYTES+2)/3)*4) 250: 251: /* 252: * EDNS0 Z-field extended flags 253: */ 254: #define DNS_MESSAGEEXTFLAG_DO 0x8000U 255: 256: /* 257: * Status return codes for T_UNSPEC conversion routines 258: */ 259: #define CONV_SUCCESS 0 260: #define CONV_OVERFLOW (-1) 261: #define CONV_BADFMT (-2) 262: #define CONV_BADCKSUM (-3) 263: #define CONV_BADBUFLEN (-4) 264: 265: #if !defined(_BYTE_ORDER) || \ 266: (_BYTE_ORDER != _BIG_ENDIAN && _BYTE_ORDER != _LITTLE_ENDIAN && \ 267: _BYTE_ORDER != _PDP_ENDIAN) 268: /* you must determine what the correct bit order is for 269: * your compiler - the next line is an intentional error 270: * which will force your compiles to bomb until you fix 271: * the above macros. 272: */ 273: #error "Undefined or invalid _BYTE_ORDER"; 274: #endif 275: 276: /* 277: * Structure for query header. The order of the fields is machine- and 278: * compiler-dependent, depending on the byte/bit order and the layout 279: * of bit fields. We use bit fields only in int variables, as this 280: * is all ANSI requires. This requires a somewhat confusing rearrangement. 281: */ 282: 283: typedef struct { 284: unsigned id :16; /* query identification number */ 285: #if _BYTE_ORDER == _BIG_ENDIAN 286: /* fields in third byte */ 287: unsigned qr: 1; /* response flag */ 288: unsigned opcode: 4; /* purpose of message */ 289: unsigned aa: 1; /* authoritive answer */ 290: unsigned tc: 1; /* truncated message */ 291: unsigned rd: 1; /* recursion desired */ 292: /* fields in fourth byte */ 293: unsigned ra: 1; /* recursion available */ 294: unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ 295: unsigned ad: 1; /* authentic data from named */ 296: unsigned cd: 1; /* checking disabled by resolver */ 297: unsigned rcode :4; /* response code */ 298: #endif 299: #if _BYTE_ORDER == _LITTLE_ENDIAN || _BYTE_ORDER == _PDP_ENDIAN 300: /* fields in third byte */ 301: unsigned rd :1; /* recursion desired */ 302: unsigned tc :1; /* truncated message */ 303: unsigned aa :1; /* authoritive answer */ 304: unsigned opcode :4; /* purpose of message */ 305: unsigned qr :1; /* response flag */ 306: /* fields in fourth byte */ 307: unsigned rcode :4; /* response code */ 308: unsigned cd: 1; /* checking disabled by resolver */ 309: unsigned ad: 1; /* authentic data from named */ 310: unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ 311: unsigned ra :1; /* recursion available */ 312: #endif 313: /* remaining bytes */ 314: unsigned qdcount :16; /* number of question entries */ 315: unsigned ancount :16; /* number of answer entries */ 316: unsigned nscount :16; /* number of authority entries */ 317: unsigned arcount :16; /* number of resource entries */ 318: } HEADER; 319: 320: /* 321: * Defines for handling compressed domain names 322: */ 323: #define INDIR_MASK 0xc0 324: 325: extern u_int16_t _getshort(const unsigned char *); 326: extern u_int32_t _getlong(const unsigned char *); 327: 328: /* 329: * Inline versions of get/put short/long. Pointer is advanced. 330: * 331: * These macros demonstrate the property of C whereby it can be 332: * portable or it can be elegant but rarely both. 333: */ 334: #define GETSHORT(s, cp) { \ 335: unsigned char *t_cp = (unsigned char *)(cp); \ 336: (s) = ((u_int16_t)t_cp[0] << 8) \ 337: | ((u_int16_t)t_cp[1]) \ 338: ; \ 339: (cp) += INT16SZ; \ 340: } 341: 342: #define GETLONG(l, cp) { \ 343: unsigned char *t_cp = (unsigned char *)(cp); \ 344: (l) = ((u_int32_t)t_cp[0] << 24) \ 345: | ((u_int32_t)t_cp[1] << 16) \ 346: | ((u_int32_t)t_cp[2] << 8) \ 347: | ((u_int32_t)t_cp[3]) \ 348: ; \ 349: (cp) += INT32SZ; \ 350: } 351: 352: #define PUTSHORT(s, cp) { \ 353: u_int16_t t_s = (u_int16_t)(s); \ 354: unsigned char *t_cp = (unsigned char *)(cp); \ 355: *t_cp++ = t_s >> 8; \ 356: *t_cp = t_s; \ 357: (cp) += INT16SZ; \ 358: } 359: 360: #define PUTLONG(l, cp) { \ 361: u_int32_t t_l = (u_int32_t)(l); \ 362: unsigned char *t_cp = (unsigned char *)(cp); \ 363: *t_cp++ = t_l >> 24; \ 364: *t_cp++ = t_l >> 16; \ 365: *t_cp++ = t_l >> 8; \ 366: *t_cp = t_l; \ 367: (cp) += INT32SZ; \ 368: } 369: 370: #endif /* !_NAMESER_H_ */