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Diffstat (limited to 'private/inc/sockets/arpa/nameser.h')
| -rw-r--r-- | private/inc/sockets/arpa/nameser.h | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/private/inc/sockets/arpa/nameser.h b/private/inc/sockets/arpa/nameser.h new file mode 100644 index 000000000..73e0489a6 --- /dev/null +++ b/private/inc/sockets/arpa/nameser.h @@ -0,0 +1,298 @@ +/*++ + +Copyright (c) 1991 Microsoft Corporation + +Module Name: + + nameser.h + +Abstract: + + Definitions for the DNS resolver and nameserver. + +Author: + + Mike Massa (mikemas) Jan 31, 1992 + +Revision History: + + Who When What + -------- -------- ---------------------------------------------- + mikemas 01-31-92 created + +Notes: + +--*/ + +/****************************************************************** + * + * SpiderTCP BIND + * + * Copyright 1990 Spider Systems Limited + * + * NAMESER.H + * + ******************************************************************/ + +/* + * /usr/projects/tcp/SCCS.rel3/rel/src/include/arpa/0/s.nameser.h + * @(#)nameser.h 5.3 + * + * Last delta created 14:06:04 3/4/91 + * This file extracted 11:19:28 3/8/91 + * + * Modifications: + * + * GSS 20 Jul 90 New File + */ + +/* + * Copyright (c) 1983, 1989 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that: (1) source distributions retain this entire copyright + * notice and comment, and (2) distributions including binaries display + * the following acknowledgement: ``This product includes software + * developed by the University of California, Berkeley and its contributors'' + * in the documentation or other materials provided with the distribution + * and in all advertising materials mentioning features or use of this + * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * @(#)nameser.h 5.24 (Berkeley) 6/1/90 + */ + +#ifndef _NAMESER_INCLUDED +#define _NAMESER_INCLUDED + + +/* + * 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 */ + /* Number of bytes of fixed size data in query structure */ +#define QFIXEDSZ 4 + /* number of bytes of fixed size data in resource record */ +#define RRFIXEDSZ 10 + +/* + * 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 */ + /* non standard */ +#define UPDATEA 0x9 /* add resource record */ +#define UPDATED 0xa /* delete a specific resource record */ +#define UPDATEDA 0xb /* delete all nemed 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 */ + +/* + * Currently defined response codes + */ +#ifndef NOERROR +#define NOERROR 0 /* no error */ +#endif +#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 */ + /* non standard */ +#define NOCHANGE 0xf /* update failed to change db */ + +/* + * 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 /* connonical 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_AFSDB 18 /* AFS database servers */ + /* 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 at MIT */ +#define C_HS 4 /* for Hesiod name server at MIT */ + /* 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 +#define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */ +#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(MIPSEL) || \ + defined(BIT_ZERO_ON_RIGHT) +#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 (BIT_ZERO_ON_LEFT) +#define BYTE_ORDER BIG_ENDIAN +#endif +#ifndef BYTE_ORDER /* still not defined */ +#if defined(u3b2) || defined(m68k) +#define BYTE_ORDER BIG_ENDIAN +#endif +#if defined(i286) || defined(i386) || defined(_MIPS_) || defined(_ALPHA_) || defined(_PPC_) +#define BYTE_ORDER LITTLE_ENDIAN +#endif +#endif /* ~BYTE_ORDER */ +#endif /* BYTE_ORDER */ + +#ifndef BYTE_ORDER + /* you must determine what the correct bit order is for your compiler */ + UNDEFINED_BIT_ORDER; +#endif +/* + * Structure for query header, the order of the fields is machine and + * compiler dependent, in our case, the bits within a byte are assignd + * least significant first, while the order of transmition is most + * significant first. This requires a somewhat confusing rearrangement. + */ + +typedef struct { + unsigned short id; /* query identification number */ +#if BYTE_ORDER == BIG_ENDIAN + /* fields in third byte */ + unsigned char qr:1; /* response flag */ + unsigned char opcode:4; /* purpose of message */ + unsigned char aa:1; /* authoritive answer */ + unsigned char tc:1; /* truncated message */ + unsigned char rd:1; /* recursion desired */ + /* fields in fourth byte */ + unsigned char ra:1; /* recursion available */ + unsigned char pr:1; /* primary server required (non standard) */ + unsigned char unused:2; /* unused bits */ + unsigned char rcode:4; /* response code */ +#endif +#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN + /* fields in third byte */ + unsigned char rd:1; /* recursion desired */ + unsigned char tc:1; /* truncated message */ + unsigned char aa:1; /* authoritive answer */ + unsigned char opcode:4; /* purpose of message */ + unsigned char qr:1; /* response flag */ + /* fields in fourth byte */ + unsigned char rcode:4; /* response code */ + unsigned char unused:2; /* unused bits */ + unsigned char pr:1; /* primary server required (non standard) */ + unsigned char ra:1; /* recursion available */ +#endif + /* remaining bytes */ + unsigned short qdcount; /* number of question entries */ + unsigned short ancount; /* number of answer entries */ + unsigned short nscount; /* number of authority entries */ + unsigned short arcount; /* number of resource entries */ +} HEADER; + +/* + * Defines for handling compressed domain names + */ +#define INDIR_MASK 0xc0 + +/* + * Structure for passing resource records around. + */ +struct rrec { + short r_zone; /* zone number */ + short r_class; /* class number */ + short r_type; /* type number */ + unsigned long r_ttl; /* time to live */ + int r_size; /* size of data area */ + char *r_data; /* pointer to data */ +}; + +extern unsigned short _getshort(); +extern unsigned long _getlong(); + +/* + * Inline versions of get/put short/long. + * Pointer is advanced; we assume that both arguments + * are lvalues and will already be in registers. + * cp MUST be unsigned char *. + */ +#define GETSHORT(s, cp) { \ + (s) = *(cp)++ << 8; \ + (s) |= *(cp)++; \ +} + +#define GETLONG(l, cp) { \ + (l) = *(cp)++ << 8; \ + (l) |= *(cp)++; (l) <<= 8; \ + (l) |= *(cp)++; (l) <<= 8; \ + (l) |= *(cp)++; \ +} + + +#define PUTSHORT(s, cp) { \ + *(cp)++ = (s) >> 8; \ + *(cp)++ = (s); \ +} + +/* + * Warning: PUTLONG destroys its first argument. + */ +#define PUTLONG(l, cp) { \ + (cp)[3] = l; \ + (cp)[2] = (l >>= 8); \ + (cp)[1] = (l >>= 8); \ + (cp)[0] = l >> 8; \ + (cp) += sizeof(unsigned long); \ +} + +#endif // _NAMESER_INCLUDED |