58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/* @(#)resolv.h 1.1 92/07/30 SMI; from UCB 5.5 2/12/87 */
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/*
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* Copyright (c) 1983, 1987 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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/*
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* Global defines and variables for resolver stub.
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*/
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#ifndef _resolv_h
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#define _resolv_h
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#define ADDRSORT 1 /* enable the address-sorting option */
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#define MAXADDR 10 /* max # addresses to sort by */
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#define MAXNS 3 /* max # name servers we'll track */
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#define MAXDNSRCH 3 /* max # default domain levels to try */
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#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
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#define RES_TIMEOUT 6 /* seconds between retries */
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struct state {
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int retrans; /* retransmition time interval */
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int retry; /* number of times to retransmit */
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long options; /* option flags - see below. */
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int nscount; /* number of name servers */
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struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
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#define nsaddr nsaddr_list[0] /* for backward compatibility */
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u_short id; /* current packet id */
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char defdname[MAXDNAME]; /* default domain */
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char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
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int ascount; /* number of addresses */
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struct in_addr sort_list[MAXADDR]; /* address sorting list */
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};
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/*
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* Resolver options
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*/
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#define RES_INIT 0x0001 /* address initialized */
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#define RES_DEBUG 0x0002 /* print debug messages */
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#define RES_AAONLY 0x0004 /* authoritative answers only */
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#define RES_USEVC 0x0008 /* use virtual circuit */
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#define RES_PRIMARY 0x0010 /* query primary server only */
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#define RES_IGNTC 0x0020 /* ignore trucation errors */
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#define RES_RECURSE 0x0040 /* recursion desired */
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#define RES_DEFNAMES 0x0080 /* use default domain name */
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#define RES_STAYOPEN 0x0100 /* Keep TCP socket open */
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#define RES_DNSRCH 0x0200 /* search up local domain tree */
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#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
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extern struct state _res;
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extern char *p_cdname(), *p_rr(), *p_type(), *p_class();
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#endif /*!_resolv_h*/
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