124 lines
3.8 KiB
C
Executable file
124 lines
3.8 KiB
C
Executable 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
|
|
*/
|
|
|
|
/*
|
|
server/ip/gen/nameser.h
|
|
|
|
Created Sept 18, 1991 by Philip Homburg
|
|
*/
|
|
|
|
#ifndef __SERVER__IP__GEN__NAEMSER_H__
|
|
#define __SERVER__IP__GEN__NAEMSER_H__
|
|
|
|
typedef struct dns_hdr
|
|
{
|
|
u16_t dh_id;
|
|
u8_t dh_flag1;
|
|
u8_t dh_flag2;
|
|
u16_t dh_qdcount;
|
|
u16_t dh_ancount;
|
|
u16_t dh_nscount;
|
|
u16_t dh_arcount;
|
|
} dns_hdr_t;
|
|
|
|
#define DHF_QR 0x80
|
|
#define DHF_OPCODE 0x78
|
|
#define DHF_AA 0x04
|
|
#define DHF_TC 0x02
|
|
#define DHF_RD 0x01
|
|
|
|
#define DHF_RA 0x80
|
|
#define DHF_PR 0x40
|
|
#define DHF_UNUSED 0x30
|
|
#define DHF_RCODE 0x0F
|
|
|
|
|
|
/*
|
|
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
|
|
#define INDIR_MASK 0xc0
|
|
/* Defines for handling compressed domain names */
|
|
|
|
/*
|
|
Opcodes for DNS
|
|
*/
|
|
|
|
#define QUERY 0x0 /* standard query */
|
|
#define IQUERY 0x1 /* inverse query */
|
|
|
|
/*
|
|
Error 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 */
|
|
/* non standard */
|
|
#define NOCHANGE 0xf /* update failed to change db */
|
|
|
|
/* Valid types */
|
|
|
|
#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 */
|
|
/* 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 */
|
|
|
|
/* Valid classes */
|
|
|
|
#define C_IN 1 /* the internet */
|
|
#define C_CHAOS 3 /* for chaos net (MIT) */
|
|
#define C_HS 4 /* for Hesiod name server at MIT */
|
|
|
|
#define C_ANY 255 /* wildcard */
|
|
|
|
#endif /* __SERVER__IP__GEN__NAEMSER_H__ */
|