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207 mateuszvis 1
/*!\file resolv.h
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 * Resolver API.
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 */
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/*-
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 * Copyright (c) 1983, 1987, 1989, 1993
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 *      The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *      This product includes software developed by the University of
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 *      California, Berkeley and its contributors.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * -
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 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies, and that
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 * the name of Digital Equipment Corporation not be used in advertising or
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 * publicity pertaining to distribution of the document or software without
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 * specific, written prior permission.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
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 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
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 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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 * SOFTWARE.
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 * -
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 * --Copyright--
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 *
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 *      @(#)resolv.h    8.1 (Berkeley) 6/2/93
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 *      From Id: resolv.h,v 4.9.1.2 1993/05/17 09:59:01 vixie Exp
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 *      $Id: resolv.h,v 1.7 1996/08/29 20:00:58 peter Exp $
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 */
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#ifndef _RESOLV_H_
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#define _RESOLV_H_
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#include <stdio.h>
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#ifndef __SYS_W32API_H
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#include <sys/w32api.h>
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#endif
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#ifndef __SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifndef __SYS_WTYPES_H
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#include <sys/wtypes.h>
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#endif
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#ifndef __SYS_CDEFS_H
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#include <sys/cdefs.h>
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#endif
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/*
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 * revision information.  this is the release date in YYYYMMDD format.
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 * it can change every day so the right thing to do with it is use it
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 * in preprocessor commands such as "#if (__RES > 19931104)".  do not
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 * compare for equality; rather, use it to determine whether your resolver
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 * is new enough to contain a certain feature.
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 */
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#define __RES   19960229
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/*
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 * Resolver configuration file.
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 * Normally not present, but may contain the address of the
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 * inital name server(s) to query and the domain search list.
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 */
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#ifndef _PATH_RESCONF
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#define _PATH_RESCONF   "/etc/resolv.conf"
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#endif
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/*
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 * Global defines and variables for resolver stub.
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 */
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#define MAXNS                   3       /* max # name servers we'll track */
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#define MAXDFLSRCH              3       /* # default domain levels to try */
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#define MAXDNSRCH               6       /* max # domains in search path */
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#define LOCALDOMAINPARTS        2       /* min levels in name that is "local" */
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#define RES_TIMEOUT             5       /* min. seconds between retries */
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#define MAXRESOLVSORT           10      /* number of net to sort on */
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#define RES_MAXNDOTS            15      /* should reflect bit field size */
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struct __res_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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        u_long   options;               /* option flags - see below. */
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        int      nscount;               /* number of name servers */
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        struct   sockaddr_in
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                 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    *dnsrch[MAXDNSRCH+1];   /* components of domain to search */
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        char     defdname[MAXDNAME];    /* default domain */
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        u_long   pfcode;                /* RES_PRF_ flags - see below. */
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        unsigned ndots:4;               /* threshold for initial abs. query */
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        unsigned nsort:4;               /* number of elements in sort_list[] */
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        char    unused[3];
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        struct {
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          struct in_addr  addr;
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          u_long          mask;
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      } sort_list[MAXRESOLVSORT];
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        char pad[72];                   /* On an i386 this means 512b total. */
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};
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/*
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 * Resolver options (keep these in synch with res_debug.c, please)
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 */
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#define RES_INIT        0x00000001      /* address initialized */
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#define RES_DEBUG       0x00000002      /* print debug messages */
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#define RES_AAONLY      0x00000004      /* authoritative answers only (!IMPL)*/
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#define RES_USEVC       0x00000008      /* use virtual circuit */
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#define RES_PRIMARY     0x00000010      /* query primary server only (!IMPL) */
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#define RES_IGNTC       0x00000020      /* ignore truncation errors */
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#define RES_RECURSE     0x00000040      /* recursion desired */
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#define RES_DEFNAMES    0x00000080      /* use default domain name */
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#define RES_STAYOPEN    0x00000100      /* Keep TCP socket open */
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#define RES_DNSRCH      0x00000200      /* search up local domain tree */
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#define RES_INSECURE1   0x00000400      /* type 1 security disabled */
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#define RES_INSECURE2   0x00000800      /* type 2 security disabled */
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#define RES_NOALIASES   0x00001000      /* shuts off HOSTALIASES feature */
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#define RES_USE_INET6   0x00002000      /* use/map IPv6 in gethostbyname() */
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#define RES_DEFAULT     (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
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/*
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 * Resolver "pfcode" values.  Used by dig.
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 */
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#define RES_PRF_STATS   0x00000001
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/*                      0x00000002      */
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#define RES_PRF_CLASS   0x00000004
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#define RES_PRF_CMD     0x00000008
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#define RES_PRF_QUES    0x00000010
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#define RES_PRF_ANS     0x00000020
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#define RES_PRF_AUTH    0x00000040
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#define RES_PRF_ADD     0x00000080
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#define RES_PRF_HEAD1   0x00000100
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#define RES_PRF_HEAD2   0x00000200
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#define RES_PRF_TTLID   0x00000400
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#define RES_PRF_HEADX   0x00000800
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#define RES_PRF_QUERY   0x00001000
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#define RES_PRF_REPLY   0x00002000
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#define RES_PRF_INIT    0x00004000
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/*                      0x00008000      */
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/* hooks are still experimental as of 4.9.2 */
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typedef enum {
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        res_goahead,
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        res_nextns,
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        res_modified,
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        res_done,
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        res_error
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      } res_sendhookact;
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typedef res_sendhookact (*res_send_qhook)(struct sockaddr_in * const *ns,
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                                          const u_char **query,
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                                          int *querylen,
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                                          u_char *ans,
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                                          int anssiz,
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                                          int *resplen);
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typedef res_sendhookact (*res_send_rhook)(const struct sockaddr_in *ns,
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                                          const u_char *query,
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                                          int querylen,
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                                          u_char *ans,
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                                          int anssiz,
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                                          int *resplen);
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W32_DATA struct __res_state _res;
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W32_DATA int h_errno;
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/* Private routines shared between libc/net, named, nslookup and others. */
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#define res_hnok         __res_hnok
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#define res_ownok        __res_ownok
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#define res_mailok       __res_mailok
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#define res_dnok         __res_dnok
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#define loc_ntoa         __loc_ntoa
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#define loc_aton         __loc_aton
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#define dn_skipname      __dn_skipname
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#define fp_query         __fp_query
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#define fp_nquery        __fp_nquery
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#define hostalias        __hostalias
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#define putlong          __putlong
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#define putshort         __putshort
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#define p_class          __p_class
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#define p_time           __p_time
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#define p_type           __p_type
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#define p_cdnname        __p_cdnname
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#define p_cdname         __p_cdname
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#define p_fqname         __p_fqname
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#define p_rr             __p_rr
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#define p_option         __p_option
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#define res_randomid     __res_randomid
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#define res_isourserver  __res_isourserver
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#define res_nameinquery  __res_nameinquery
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#define res_queriesmatch __res_queriesmatch
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__BEGIN_DECLS
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W32_FUNC int      __res_hnok   (const char *);
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W32_FUNC int      __res_ownok  (const char *);
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W32_FUNC int      __res_mailok (const char *);
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W32_FUNC int      __res_dnok   (const char *);
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W32_FUNC int      __loc_aton   (const char *ascii, u_char *binary);
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W32_FUNC char *   __loc_ntoa   (const u_char *binary, char *ascii);
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W32_FUNC int      __dn_skipname(const u_char *, const u_char *);
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W32_FUNC void     __fp_resstat (struct __res_state *, FILE *);
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W32_FUNC void     __fp_query   (const u_char *, FILE *);
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W32_FUNC void     __fp_nquery  (const u_char *, int, FILE *);
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W32_FUNC char    *__hostalias  (const char *);
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W32_FUNC void     __putlong    (u_long,  u_char *);
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W32_FUNC void     __putshort   (u_short, u_char *);
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W32_FUNC char    *__p_time     (u_long);
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W32_FUNC void     __p_query    (const u_char *);
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W32_FUNC const u_char *__p_cdnname (const u_char *, const u_char *, int, FILE *);
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W32_FUNC const u_char *__p_cdname  (const u_char *, const u_char *, FILE *);
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W32_FUNC const u_char *__p_fqname  (const u_char *, const u_char *, FILE *);
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W32_FUNC const u_char *__p_rr      (const u_char *, const u_char *, FILE *);
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W32_FUNC const char   *__p_type    (int);
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W32_FUNC const char   *__p_class   (int);
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W32_FUNC const char   *__p_option  (u_long option);
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W32_FUNC int     dn_comp   (const char *, u_char *, int, u_char **, u_char **);
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W32_FUNC int     dn_expand (const u_char *, const u_char *, const u_char *, char *, int);
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W32_FUNC int     res_init        (void);
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W32_FUNC u_short res_randomid    (void);
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W32_FUNC int     res_query       (const char *, int, int, u_char *, int);
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W32_FUNC int     res_search      (const char *, int, int, u_char *, int);
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W32_FUNC int     res_querydomain (const char *, const char *, int, int, u_char *, int);
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W32_FUNC int     res_mkquery     (int, const char *, int, int, const u_char *, int, const u_char *, u_char *, int);
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W32_FUNC int     res_send        (const u_char *, int, u_char *, int);
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W32_FUNC int     res_isourserver (const struct sockaddr_in *);
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W32_FUNC int     res_nameinquery (const char *, int, int, const u_char *, const u_char *);
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W32_FUNC int     res_queriesmatch(const u_char *, const u_char *, const u_char *, const u_char *);
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W32_FUNC void    res_send_setqhook (res_send_qhook hook);
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W32_FUNC void    res_send_setrhook (res_send_rhook hook);
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__END_DECLS
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#endif /* !_RESOLV_H_ */