| 1 | /* Modified for EMX by hv 1994,1996
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| 2 | *
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| 3 | * Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | * 1. Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * 3. All advertising materials mentioning features or use of this software
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| 15 | * must display the following acknowledgement:
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| 16 | * This product includes software developed by the University of
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| 17 | * California, Berkeley and its contributors.
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| 18 | * 4. Neither the name of the University nor the names of its contributors
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| 19 | * may be used to endorse or promote products derived from this software
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| 20 | * without specific prior written permission.
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| 21 | *
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| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 32 | * SUCH DAMAGE.
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| 33 | *
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| 34 | * from: @(#)resolv.h 5.15 (Berkeley) 4/3/91
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| 35 | * resolv.h,v 1.1 2003/04/16 15:53:07 bird Exp
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| 36 | */
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| 37 |
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| 38 | #ifndef _RESOLV_H_
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| 39 | #define _RESOLV_H_
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| 40 |
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| 41 | #if defined (__cplusplus)
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| 42 | extern "C" {
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| 43 | #endif
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| 44 |
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| 45 | #pragma pack(4)
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| 46 |
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| 47 | /*
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| 48 | * Resolver configuration file.
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| 49 | * Normally not present, but may contain the address of the
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| 50 | * inital name server(s) to query and the domain search list.
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| 51 | */
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| 52 |
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| 53 | #ifndef _PATH_RESCONF
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| 54 | #define _PATH_RESCONF "/tcpip/etc/resolv.conf"
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| 55 | #endif
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| 56 |
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| 57 | /*
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| 58 | * Global defines and variables for resolver stub.
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| 59 | */
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| 60 | #define MAXNS 3 /* max # name servers we'll track */
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| 61 | #define MAXDFLSRCH 3 /* # default domain levels to try */
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| 62 | #define MAXDNSRCH 6 /* max # domains in search path */
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| 63 | #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
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| 64 | #define MAXDNSLUS 4 /* max # of host lookup types */
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| 65 |
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| 66 | #define RES_TIMEOUT 5 /* min. seconds between retries */
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| 67 |
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| 68 | #pragma pack(4)
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| 69 | struct state {
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| 70 | int retrans; /* retransmition time interval */
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| 71 | int retry; /* number of times to retransmit */
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| 72 | long options; /* option flags - see below. */
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| 73 | int nscount; /* number of name servers */
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| 74 | struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
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| 75 | #define nsaddr nsaddr_list[0] /* for backward compatibility */
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| 76 | u_short id; /* current packet id */
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| 77 | char defdname[MAXDNAME]; /* default domain */
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| 78 | char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
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| 79 | /* char lookups[MAXDNSLUS];*/ /* not in OS/2 */
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| 80 | };
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| 81 | #pragma pack(1)
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| 82 |
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| 83 | /*
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| 84 | * Resolver options
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| 85 | */
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| 86 | #define RES_INIT 0x0001 /* address initialized */
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| 87 | #define RES_DEBUG 0x0002 /* print debug messages */
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| 88 | #define RES_AAONLY 0x0004 /* authoritative answers only */
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| 89 | #define RES_USEVC 0x0008 /* use virtual circuit */
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| 90 | #define RES_PRIMARY 0x0010 /* query primary server only */
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| 91 | #define RES_IGNTC 0x0020 /* ignore trucation errors */
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| 92 | #define RES_RECURSE 0x0040 /* recursion desired */
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| 93 | #define RES_DEFNAMES 0x0080 /* use default domain name */
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| 94 | #define RES_STAYOPEN 0x0100 /* Keep TCP socket open */
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| 95 | #define RES_DNSRCH 0x0200 /* search up local domain tree */
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| 96 |
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| 97 | #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
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| 98 |
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| 99 | extern struct state _res;
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| 100 |
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| 101 | /* Private routines shared between libc/net, named, nslookup and others. */
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| 102 | int dn_skipname (__const__ u_char *, __const__ u_char *);
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| 103 | void putlong (u_long, u_char *);
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| 104 | void putshort (u_short, u_char *);
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| 105 |
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| 106 | /* public routines */
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| 107 | int dn_comp(__const__ u_char *, u_char *, int, u_char **, u_char **);
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| 108 | int dn_expand(__const__ u_char *, __const__ u_char *, __const__ u_char *,
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| 109 | u_char *, int);
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| 110 | int res_init(void);
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| 111 | int res_mkquery(int, __const__ char *, int, int, __const__ char *, int,
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| 112 | __const__ struct rrec *, char *, int);
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| 113 | int res_send(__const__ char *, int, char *, int);
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| 114 |
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| 115 | #if defined (__cplusplus)
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| 116 | }
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| 117 | #endif
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| 118 |
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| 119 | #endif /* !_RESOLV_H_ */
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