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Diffstat (limited to 'include/arpa/nameser.h')
| -rw-r--r-- | include/arpa/nameser.h | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h new file mode 100644 index 000000000..ba6014216 --- /dev/null +++ b/include/arpa/nameser.h @@ -0,0 +1,392 @@ +/* + * ++Copyright++ 1983, 1989, 1993 + * - + * Copyright (c) 1983, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * - + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * - + * Portions Copyright (c) 1995 by International Business Machines, Inc. + * + * International Business Machines, Inc. (hereinafter called IBM) grants + * permission under its copyrights to use, copy, modify, and distribute this + * Software with or without fee, provided that the above copyright notice and + * all paragraphs of this notice appear in all copies, and that the name of IBM + * not be used in connection with the marketing of any product incorporating + * the Software or modifications thereof, without specific, written prior + * permission. + * + * To the extent it has a right to do so, IBM grants an immunity from suit + * under its patents, if any, for the use, sale or manufacture of products to + * the extent that such products are used for performing Domain Name System + * dynamic updates in TCP/IP networks by means of the Software. No immunity is + * granted for any product per se or for any other function of any product. + * + * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, + * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN + * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. + * --Copyright-- + */ + +/* + * @(#)nameser.h 8.1 (Berkeley) 6/2/93 + * $Id: nameser.h,v 1.1 2000/05/14 04:16:36 erik Exp $ + */ + +#ifndef _NAMESER_H_ +#define _NAMESER_H_ + +#include <sys/param.h> +#if (!defined(BSD)) || (BSD < 199306) +# include <sys/bitypes.h> +#else +# include <sys/types.h> +#endif +#include <sys/cdefs.h> + +#ifdef _AUX_SOURCE +# include <sys/types.h> +#endif + +/* + * revision information. this is the release date in YYYYMMDD format. + * it can change every day so the right thing to do with it is use it + * in preprocessor commands such as "#if (__BIND > 19931104)". do not + * compare for equality; rather, use it to determine whether your resolver + * is new enough to contain a certain feature. + */ + +#define __BIND 19960801 /* interface version stamp */ + +/* + * Define constants based on rfc883 + */ +#define PACKETSZ 512 /* maximum packet size */ +#define MAXDNAME 1025 /* maximum domain name */ +#define MAXCDNAME 255 /* maximum compressed domain name */ +#define MAXLABEL 63 /* maximum length of domain label */ +#define HFIXEDSZ 12 /* #/bytes of fixed data in header */ +#define QFIXEDSZ 4 /* #/bytes of fixed data in query */ +#define RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ +#define INT32SZ 4 /* for systems without 32-bit ints */ +#define INT16SZ 2 /* for systems without 16-bit ints */ +#define INADDRSZ 4 /* IPv4 T_A */ +#define IN6ADDRSZ 16 /* IPv6 T_AAAA */ + +/* + * Internet nameserver port number + */ +#define NAMESERVER_PORT 53 + +/* + * Currently defined opcodes + */ +#define QUERY 0x0 /* standard query */ +#define IQUERY 0x1 /* inverse query */ +#define STATUS 0x2 /* nameserver status query */ +/*#define xxx 0x3*/ /* 0x3 reserved */ +#define NS_NOTIFY_OP 0x4 /* notify secondary of SOA change */ +/* + * Currently defined response codes + */ +#define NOERROR 0 /* no error */ +#define FORMERR 1 /* format error */ +#define SERVFAIL 2 /* server failure */ +#define NXDOMAIN 3 /* non existent domain */ +#define NOTIMP 4 /* not implemented */ +#define REFUSED 5 /* query refused */ + +/* + * Type values for resources and queries + */ +#define T_A 1 /* host address */ +#define T_NS 2 /* authoritative server */ +#define T_MD 3 /* mail destination */ +#define T_MF 4 /* mail forwarder */ +#define T_CNAME 5 /* canonical name */ +#define T_SOA 6 /* start of authority zone */ +#define T_MB 7 /* mailbox domain name */ +#define T_MG 8 /* mail group member */ +#define T_MR 9 /* mail rename name */ +#define T_NULL 10 /* null resource record */ +#define T_WKS 11 /* well known service */ +#define T_PTR 12 /* domain name pointer */ +#define T_HINFO 13 /* host information */ +#define T_MINFO 14 /* mailbox information */ +#define T_MX 15 /* mail routing information */ +#define T_TXT 16 /* text strings */ +#define T_RP 17 /* responsible person */ +#define T_AFSDB 18 /* AFS cell database */ +#define T_X25 19 /* X_25 calling address */ +#define T_ISDN 20 /* ISDN calling address */ +#define T_RT 21 /* router */ +#define T_NSAP 22 /* NSAP address */ +#define T_NSAP_PTR 23 /* reverse NSAP lookup (deprecated) */ +#define T_SIG 24 /* security signature */ +#define T_KEY 25 /* security key */ +#define T_PX 26 /* X.400 mail mapping */ +#define T_GPOS 27 /* geographical position (withdrawn) */ +#define T_AAAA 28 /* IP6 Address */ +#define T_LOC 29 /* Location Information */ +#define T_NXT 30 /* Next Valid Name in Zone */ +#define T_EID 31 /* Endpoint identifier */ +#define T_NIMLOC 32 /* Nimrod locator */ +#define T_SRV 33 /* Server selection */ +#define T_ATMA 34 /* ATM Address */ +#define T_NAPTR 35 /* Naming Authority PoinTeR */ + /* non standard */ +#define T_UINFO 100 /* user (finger) information */ +#define T_UID 101 /* user ID */ +#define T_GID 102 /* group ID */ +#define T_UNSPEC 103 /* Unspecified format (binary data) */ + /* Query type values which do not appear in resource records */ +#define T_IXFR 251 /* incremental zone transfer */ +#define T_AXFR 252 /* transfer zone of authority */ +#define T_MAILB 253 /* transfer mailbox records */ +#define T_MAILA 254 /* transfer mail agent records */ +#define T_ANY 255 /* wildcard match */ + +/* + * Values for class field + */ + +#define C_IN 1 /* the arpa internet */ +#define C_CHAOS 3 /* for chaos net (MIT) */ +#define C_HS 4 /* for Hesiod name server (MIT) (XXX) */ + /* Query class values which do not appear in resource records */ +#define C_ANY 255 /* wildcard match */ + +/* + * Flags field of the KEY RR rdata + */ +#define KEYFLAG_TYPEMASK 0xC000 /* Mask for "type" bits */ +#define KEYFLAG_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ +#define KEYFLAG_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ +#define KEYFLAG_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ +#define KEYFLAG_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ +/* The type bits can also be interpreted independently, as single bits: */ +#define KEYFLAG_NO_AUTH 0x8000 /* Key not usable for authentication */ +#define KEYFLAG_NO_CONF 0x4000 /* Key not usable for confidentiality */ + +#define KEYFLAG_EXPERIMENTAL 0x2000 /* Security is *mandatory* if bit=0 */ +#define KEYFLAG_RESERVED3 0x1000 /* reserved - must be zero */ +#define KEYFLAG_RESERVED4 0x0800 /* reserved - must be zero */ +#define KEYFLAG_USERACCOUNT 0x0400 /* key is assoc. with a user acct */ +#define KEYFLAG_ENTITY 0x0200 /* key is assoc. with entity eg host */ +#define KEYFLAG_ZONEKEY 0x0100 /* key is zone key for the zone named */ +#define KEYFLAG_IPSEC 0x0080 /* key is for IPSEC use (host or user)*/ +#define KEYFLAG_EMAIL 0x0040 /* key is for email (MIME security) */ +#define KEYFLAG_RESERVED10 0x0020 /* reserved - must be zero */ +#define KEYFLAG_RESERVED11 0x0010 /* reserved - must be zero */ +#define KEYFLAG_SIGNATORYMASK 0x000F /* key can sign DNS RR's of same name */ + +#define KEYFLAG_RESERVED_BITMASK ( KEYFLAG_RESERVED3 | \ + KEYFLAG_RESERVED4 | \ + KEYFLAG_RESERVED10| KEYFLAG_RESERVED11) + +/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ +#define ALGORITHM_MD5RSA 1 /* MD5 with RSA */ +#define ALGORITHM_EXPIRE_ONLY 253 /* No alg, no security */ +#define ALGORITHM_PRIVATE_OID 254 /* Key begins with OID indicating alg */ + +/* Signatures */ + /* Size of a mod or exp in bits */ +#define MIN_MD5RSA_KEY_PART_BITS 512 +#define MAX_MD5RSA_KEY_PART_BITS 2552 + /* Total of binary mod and exp, bytes */ +#define MAX_MD5RSA_KEY_BYTES ((MAX_MD5RSA_KEY_PART_BITS+7/8)*2+3) + /* Max length of text sig block */ +#define MAX_KEY_BASE64 (((MAX_MD5RSA_KEY_BYTES+2)/3)*4) + +/* + * Status return codes for T_UNSPEC conversion routines + */ +#define CONV_SUCCESS 0 +#define CONV_OVERFLOW (-1) +#define CONV_BADFMT (-2) +#define CONV_BADCKSUM (-3) +#define CONV_BADBUFLEN (-4) + +#ifndef BYTE_ORDER +#if (BSD >= 199103) +# include <machine/endian.h> +#else +#ifdef linux +# include <endian.h> +#else +#define LITTLE_ENDIAN 1234 /* least-significant byte first (vax, pc) */ +#define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */ +#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp)*/ + +#if defined(vax) || defined(ns32000) || defined(sun386) || defined(i386) || \ + defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \ + defined(__alpha__) || defined(__alpha) +#define BYTE_ORDER LITTLE_ENDIAN +#endif + +#if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \ + defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \ + defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\ + defined(apollo) || defined(__convex__) || defined(_CRAY) || \ + defined(__hppa) || defined(__hp9000) || \ + defined(__hp9000s300) || defined(__hp9000s700) || \ + defined (BIT_ZERO_ON_LEFT) || defined(m68k) +#define BYTE_ORDER BIG_ENDIAN +#endif +#endif /* linux */ +#endif /* BSD */ +#endif /* BYTE_ORDER */ + +#if !defined(BYTE_ORDER) || \ + (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN && \ + BYTE_ORDER != PDP_ENDIAN) + /* you must determine what the correct bit order is for + * your compiler - the next line is an intentional error + * which will force your compiles to bomb until you fix + * the above macros. + */ + error "Undefined or invalid BYTE_ORDER"; +#endif + +/* + * Structure for query header. The order of the fields is machine- and + * compiler-dependent, depending on the byte/bit order and the layout + * of bit fields. We use bit fields only in int variables, as this + * is all ANSI requires. This requires a somewhat confusing rearrangement. + */ + +typedef struct { + unsigned id :16; /* query identification number */ +#if BYTE_ORDER == BIG_ENDIAN + /* fields in third byte */ + unsigned qr: 1; /* response flag */ + unsigned opcode: 4; /* purpose of message */ + unsigned aa: 1; /* authoritative answer */ + unsigned tc: 1; /* truncated message */ + unsigned rd: 1; /* recursion desired */ + /* fields in fourth byte */ + unsigned ra: 1; /* recursion available */ + unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ + unsigned ad: 1; /* authentic data from named */ + unsigned cd: 1; /* checking disabled by resolver */ + unsigned rcode :4; /* response code */ +#endif +#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN + /* fields in third byte */ + unsigned rd :1; /* recursion desired */ + unsigned tc :1; /* truncated message */ + unsigned aa :1; /* authoritative answer */ + unsigned opcode :4; /* purpose of message */ + unsigned qr :1; /* response flag */ + /* fields in fourth byte */ + unsigned rcode :4; /* response code */ + unsigned cd: 1; /* checking disabled by resolver */ + unsigned ad: 1; /* authentic data from named */ + unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ + unsigned ra :1; /* recursion available */ +#endif + /* remaining bytes */ + unsigned qdcount :16; /* number of question entries */ + unsigned ancount :16; /* number of answer entries */ + unsigned nscount :16; /* number of authority entries */ + unsigned arcount :16; /* number of resource entries */ +} HEADER; + +/* + * Defines for handling compressed domain names + */ +#define INDIR_MASK 0xc0 + +extern u_int16_t _getshort __P((const u_char *)); +extern u_int32_t _getlong __P((const u_char *)); + +/* + * Inline versions of get/put short/long. Pointer is advanced. + * + * These macros demonstrate the property of C whereby it can be + * portable or it can be elegant but rarely both. + */ +#define GETSHORT(s, cp) { \ + register u_char *t_cp = (u_char *)(cp); \ + (s) = ((u_int16_t)t_cp[0] << 8) \ + | ((u_int16_t)t_cp[1]) \ + ; \ + (cp) += INT16SZ; \ +} + +#define GETLONG(l, cp) { \ + register u_char *t_cp = (u_char *)(cp); \ + (l) = ((u_int32_t)t_cp[0] << 24) \ + | ((u_int32_t)t_cp[1] << 16) \ + | ((u_int32_t)t_cp[2] << 8) \ + | ((u_int32_t)t_cp[3]) \ + ; \ + (cp) += INT32SZ; \ +} + +#define PUTSHORT(s, cp) { \ + register u_int16_t t_s = (u_int16_t)(s); \ + register u_char *t_cp = (u_char *)(cp); \ + *t_cp++ = t_s >> 8; \ + *t_cp = t_s; \ + (cp) += INT16SZ; \ +} + +#define PUTLONG(l, cp) { \ + register u_int32_t t_l = (u_int32_t)(l); \ + register u_char *t_cp = (u_char *)(cp); \ + *t_cp++ = t_l >> 24; \ + *t_cp++ = t_l >> 16; \ + *t_cp++ = t_l >> 8; \ + *t_cp = t_l; \ + (cp) += INT32SZ; \ +} + +#endif /* !_NAMESER_H_ */ |