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      1 /*	$NetBSD: res.h,v 1.1.1.2 2012/09/09 16:08:11 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 2009  Internet Systems Consortium, Inc. ("ISC")
      5  *
      6  * Permission to use, copy, modify, and/or distribute this software for any
      7  * purpose with or without fee is hereby granted, provided that the above
      8  * copyright notice and this permission notice appear in all copies.
      9  *
     10  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
     11  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
     12  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
     13  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
     14  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
     15  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
     16  * PERFORMANCE OF THIS SOFTWARE.
     17  */
     18 
     19 /*
     20  *	@(#)res.h	5.10 (Berkeley) 6/1/90
     21  *	Id: res.h,v 1.3 2009/03/03 23:49:07 tbox Exp
     22  */
     23 
     24 /*
     25  *******************************************************************************
     26  *
     27  *  res.h --
     28  *
     29  *	Definitions used by modules of the name server lookup program.
     30  *
     31  *	Copyright (c) 1985
     32  *	Andrew Cherenson
     33  *	U.C. Berkeley
     34  *	CS298-26  Fall 1985
     35  *
     36  *******************************************************************************
     37  */
     38 
     39 #define TRUE	1
     40 #define FALSE	0
     41 typedef int Boolean;
     42 
     43 #define MAXALIASES	35
     44 #define MAXADDRS	35
     45 #define MAXDOMAINS	35
     46 #define MAXSERVERS	10
     47 
     48 /*
     49  *  Define return statuses in addtion to the ones defined in namserv.h
     50  *   let SUCCESS be a synonym for NOERROR
     51  *
     52  *	TIME_OUT	- a socket connection timed out.
     53  *	NO_INFO		- the server didn't find any info about the host.
     54  *	ERROR		- one of the following types of errors:
     55  *			   dn_expand, res_mkquery failed
     56  *			   bad command line, socket operation failed, etc.
     57  *	NONAUTH		- the server didn't have the desired info but
     58  *			  returned the name(s) of some servers who should.
     59  *	NO_RESPONSE	- the server didn't respond.
     60  *
     61  */
     62 
     63 #ifdef ERROR
     64 #undef ERROR
     65 #endif
     66 
     67 #define  SUCCESS		0
     68 #define  TIME_OUT		-1
     69 #define  NO_INFO		-2
     70 #define  ERROR			-3
     71 #define  NONAUTH		-4
     72 #define  NO_RESPONSE		-5
     73 
     74 /*
     75  *  Define additional options for the resolver state structure.
     76  *
     77  *   RES_DEBUG2		more verbose debug level
     78  */
     79 
     80 #define RES_DEBUG2	0x00400000
     81 
     82 /*
     83  *  Maximum length of server, host and file names.
     84  */
     85 
     86 #define NAME_LEN 256
     87 
     88 
     89 /*
     90  * Modified struct hostent from <netdb.h>
     91  *
     92  * "Structures returned by network data base library.  All addresses
     93  * are supplied in host order, and returned in network order (suitable
     94  * for use in system calls)."
     95  */
     96 
     97 typedef struct {
     98 	int     addrType;
     99 	int     addrLen;
    100 	char    *addr;
    101 } AddrInfo;
    102 
    103 typedef struct	{
    104 	char	*name;		/* official name of host */
    105 	char	**domains;	/* domains it serves */
    106 	AddrInfo **addrList;	/* list of addresses from name server */
    107 } ServerInfo;
    108 
    109 typedef struct	{
    110 	char	*name;		/* official name of host */
    111 	char	**aliases;	/* alias list */
    112 	AddrInfo **addrList;	/* list of addresses from name server */
    113 	ServerInfo **servers;
    114 } HostInfo;
    115 
    116 /*
    117  *  External routines:
    118  */
    119 
    120 extern int pickString(const char *, char *, size_t);
    121 extern int matchString(const char *, const char *);
    122 extern int StringToType(char *, int, FILE *);
    123 extern int StringToClass(char *, int, FILE *);
    124 
    125