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- /********************************************************copyrite.xmc***/
- /* */
- /* Licensed Materials - Property of IBM */
- /* */
- /* This module is "Restricted Materials of IBM": */
- /* Program Number: 5798RXW */
- /* Program Name: IBM TCP/IP Version 1.2 for OS/2 */
- /* (C) Copyright IBM Corporation. 1990, 1991. */
- /* */
- /* See IBM Copyright Instructions. */
- /* */
- /********************************************************copyrite.xmc***/
- /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not 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 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * @(#)nameser.h 5.20 (Berkeley) 10/7/88
- */
- #ifndef __32BIT__
- #define _Packed
- #define _Seg16
- #define _Far16
- #define _Cdecl
- #endif
-
- /*
- * 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 0 /* standard query */
- #define IQUERY 1 /* inverse query */
- #define CQUERYM 2 /* completion query (multiple) */
- #define CQUERYU 3 /* completion query (unique) */
- /* non standard */
- #define UPDATEA 100 /* add resource record */
- #define UPDATED 101 /* delete resource record */
- #define UPDATEM 102 /* modify resource record */
- #define ZONEINIT 103 /* initial zone transfer */
- #define ZONEREF 104 /* incremental zone referesh */
-
- /*
- * 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 */
- /* non standard */
- #define NOCHANGE 100 /* 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 */
- /* non standard */
- #define T_UINFO 100 /* user (finger) information */
- #define T_UID 101 /* user ID */
- #define T_GID 102 /* group ID */
- /* 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 */
- /* Query class values which do not appear in resource records */
- #define C_ANY 255 /* wildcard match */
-
- /*
- * 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 {
- u_short id; /* query identification number */
- u_char rd:1; /* recursion desired */
- u_char tc:1; /* truncated message */
- u_char aa:1; /* authoritive answer */
- u_char opcode:4; /* purpose of message */
- u_char qr:1; /* response flag */
- /* fields in fourth byte */
- u_char rcode:4; /* response code */
- u_char unused:2; /* unused bits */
- u_char pr:1; /* primary server required (non standard) */
- u_char ra:1; /* recursion available */
- /* remaining bytes */
- u_short qdcount; /* number of question entries */
- u_short ancount; /* number of answer entries */
- u_short nscount; /* number of authority entries */
- u_short arcount; /* number of resource entries */
- } HEADER;
-
- /*
- * Defines for handling compressed domain names
- */
- #define INDIR_MASK 0xc0
-
- /*
- * Structure for passing resource records around.
- */
- _Packed struct rrec {
- short r_zone; /* zone number */
- short r_class; /* class number */
- short r_type; /* type number */
- u_long r_ttl; /* time to live */
- short r_size; /* size of data area */
- char * _Seg16 r_data; /* pointer to data */
- };
-
- #if 0
- extern u_short _Far16 _Cdecl getshort();
- extern u_long _Far16 _Cdecl getlong();
- #endif