/******************************************************************
*
* SpiderTCP BIND
*
* Copyright 1990 Spider Systems Limited
*
* RESOLV.H
*
******************************************************************/
/*
* /usr/projects/tcp/SCCS.rel3/rel/src/include/0/s.resolv.h
* @(#)resolv.h 5.3
*
* Last delta created 14:05:35 3/4/91
* This file extracted 11:19:25 3/8/91
*
* Modifications:
*
* GSS 20 Jul 90 New File
*/
/*
* Copyright (c) 1983, 1987, 1989 The 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.
*
* @(#)resolv.h 5.10 (Berkeley) 6/1/90
*/
#ifndef _RESOLV_INCLUDED
#define _RESOLV_INCLUDED
/*
* Global defines and variables for resolver stub.
*/
#define MAXNS 8 /* max # name servers we'll track per list */
#define MAXNSLIST 4 /* max # name servers lists we'll track */
#define MAXDFLSRCH 3 /* # default domain levels to try */
#define MAXDNSRCH 6 /* max # domains in search path */
#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
#define RES_TIMEOUT 5 /* min. seconds between retries */
typedef struct _ADDR_LIST {
u_long ServerCount;
u_long Servers[MAXNS];
} ADDR_LIST, FAR * LPADDR_LIST;
struct state {
long options; /* option flags - see below. */
int retrans; /* retransmition time interval */
u_short retry; /* number of times to retransmit */
u_short id; /* current packet id */
ADDR_LIST nslist[MAXNSLIST]; /* the server lists */
char defdname[MAXDNAME]; /* default domain */
char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
};
/*
* Resolver options
*/
#define RES_INIT 0x0001 /* address initialized */
#define RES_DEBUG 0x0002 /* print debug messages */
#define RES_AAONLY 0x0004 /* authoritative answers only */
#define RES_USEVC 0x0008 /* use virtual circuit */
#define RES_PRIMARY 0x0010 /* query primary server only */
#define RES_IGNTC 0x0020 /* ignore trucation errors */
#define RES_RECURSE 0x0040 /* recursion desired */
#define RES_DEFNAMES 0x0080 /* use default domain name */
#define RES_STAYOPEN 0x0100 /* Keep TCP socket open */
#define RES_DNSRCH 0x0200 /* search up local domain tree */
#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
//
// Resolver function prototypes
//
int
dn_expand(
IN unsigned char *msg,
IN unsigned char *eomorig,
IN unsigned char *comp_dn,
OUT unsigned char *exp_dn,
IN int length
);
int
dn_comp(
IN unsigned char *exp_dn,
OUT unsigned char *comp_dn,
IN int length,
IN unsigned char **dnptrs, OPTIONAL
IN OUT unsigned char **lastdnptr OPTIONAL
);
int
res_init(
void
);
int
res_send(
IN char *buf,
IN int buflen,
OUT char *answer,
IN int anslen
);
int
res_query(
IN char *name, /* domain name */
IN int class, /* class of query */
IN int type, /* type of query */
OUT unsigned char *answer, /* buffer to put answer */
IN int anslen /* size of answer buffer */
);
int
res_search(
IN char *name, /* domain name */
IN int class, /* class of query */
IN int type, /* type of query */
OUT unsigned char *answer, /* buffer to put answer */
IN int anslen /* size of answer */
);
int
res_mkquery(
IN int op, // opcode of query
IN char *dname, // domain name
IN int class, // class of query
IN int type, // type of query
IN char *data, OPTIONAL // resource record data
IN int datalen, OPTIONAL // length of data
IN struct rrec *newrr, OPTIONAL // new rr for modify or append
OUT char *buf, // buffer to put query
IN int buflen // size of buffer
);
#endif // _RESOLV_INCLUDED
