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- /*
- * ++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.
- * -
- * --Copyright--
- */
-
- /*
- * @(#)nameser.h 8.1 (Berkeley) 6/2/93
- * $Id: nameser.h,v 8.2 1995/06/29 09:26:11 vixie Exp $
- */
-
- #ifndef _NAMESER_H_
- #define _NAMESER_H_
-
- /* Freenet programmers interface - arpa/nameser.h - edited by stewart 2/2/96 */
-
- /*
- * This file is severely hacked to compile cleanly with the rest of NetLib
- * on ARM processors (in little-endian mode)
- *
- * S.N.Brodie@ecs.soton.ac.uk added this block for RISC OS NetLib
- */
- #include "NetLib:sys.h.types"
- #define int16_t short
- #define u_int16_t unsigned short
- #define int32_t long
- #define u_int32_t unsigned long
- #ifndef BSD
- #define BSD 199103
- #endif
- /* End S.N.B. addition */
-
- /*
- * 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 19950621 /* interface version stamp */
-
- /*
- * Define constants based on rfc883
- */
- #define PACKETSZ 512 /* maximum packet size */
- #define MAXDNAME 256 /* 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 /* for sizeof(struct inaddr) != 4 */
-
- /*
- * 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 */
- #ifdef ALLOW_UPDATES
- /* non standard - supports ALLOW_UPDATES stuff from Mike Schwartz */
- # define UPDATEA 0x9 /* add resource record */
- # define UPDATED 0xa /* delete a specific resource record */
- # define UPDATEDA 0xb /* delete all named resource record */
- # define UPDATEM 0xc /* modify a specific resource record */
- # define UPDATEMA 0xd /* modify all named resource record */
- # define ZONEINIT 0xe /* initial zone transfer */
- # define ZONEREF 0xf /* incremental zone referesh */
- #endif
-
- /*
- * 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 */
- #ifdef ALLOW_UPDATES
- /* non standard */
- # define NOCHANGE 0xf /* update failed to change db */
- #endif
-
- /*
- * 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 */
- /* 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_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 */
-
- /*
- * 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) && !defined(__arm)
- # 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) || defined(__arm)
- #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; /* authoritive answer */
- unsigned tc: 1; /* truncated message */
- unsigned rd: 1; /* recursion desired */
- /* fields in fourth byte */
- unsigned ra: 1; /* recursion available */
- unsigned pr: 1; /* primary required */
- unsigned unused :2; /* unused bits (MBZ as of 4.9.3a3) */
- 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; /* authoritive answer */
- unsigned opcode :4; /* purpose of message */
- unsigned qr :1; /* response flag */
- /* fields in fourth byte */
- unsigned rcode :4; /* response code */
- unsigned unused :2; /* unused bits (MBZ as of 4.9.3a3) */
- unsigned pr: 1; /* primary required */
- 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
-
- /*
- * Structure for passing resource records around.
- */
- struct rrec {
- int16_t r_zone; /* zone number */
- int16_t r_class; /* class number */
- int16_t r_type; /* type number */
- u_int32_t r_ttl; /* time to live */
- int r_size; /* size of data area */
- char *r_data; /* pointer to data */
- };
-
- extern u_int16_t _getshort(const u_char *);
- extern u_int32_t _getlong(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_ */
-