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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [resolv.h] - Blame information for rev 173

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1 30 unneback
/*-
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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) 1996 by Internet Software Consortium.
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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.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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 * CONSORTIUM 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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/*
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 *      @(#)resolv.h    8.1 (Berkeley) 6/2/93
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 *      From Id: resolv.h,v 8.12 1998/04/28 19:36:46 halley Exp $
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 *      $Id: resolv.h,v 1.2 2001-09-27 12:01:48 chris Exp $
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 */
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#ifndef _RESOLV_H_
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#define _RESOLV_H_
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/cdefs.h>
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#include <stdio.h>
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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   19960801
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/*
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 * This used to be defined in res_query.c, now it's in herror.c.  It was
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 * never extern'd by any *.h file before it was placed here.  herror.c is
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 * part of libresolv.a even though it might make more sense in libnetdb.a
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 * or even libnet.a.
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 */
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extern int h_errno;
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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 message id */
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        char    *dnsrch[MAXDNSRCH+1];   /* components of domain to search */
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        char    defdname[256];          /* default domain (deprecated) */
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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_int32_t       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_NOTLDQUERY  0x00004000      /* Don't query TLD names */
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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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#define RES_PRF_UPDATE  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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typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
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        res_sendhookact;
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typedef res_sendhookact (*res_send_qhook)__P((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)__P((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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struct res_sym {
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        int     number;         /* Identifying number, like T_MX */
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        char *  name;           /* Its symbolic name, like "MX" */
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        char *  humanname;      /* Its fun name, like "mail exchanger" */
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};
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extern struct __res_state _res;
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extern const struct res_sym __p_class_syms[];
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extern const struct res_sym __p_type_syms[];
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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 sym_ston        __sym_ston
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#define sym_ntos        __sym_ntos
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#define sym_ntop        __sym_ntop
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#define b64_ntop        __b64_ntop
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#define b64_pton        __b64_pton
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#define loc_ntoa        __loc_ntoa
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#define loc_aton        __loc_aton
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#define fp_resstat      __fp_resstat
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#define p_query         __p_query
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#define dn_skipname     __dn_skipname
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#define fp_resstat      __fp_resstat
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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_query         __p_query
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#define p_cdnname       __p_cdnname
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#define p_section       __p_section
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#define p_cdname        __p_cdname
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#define p_fqnname       __p_fqnname
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#define p_fqname        __p_fqname
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#define p_option        __p_option
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#define p_secstodate    __p_secstodate
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#define dn_count_labels __dn_count_labels
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#define dn_comp         __dn_comp
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#define dn_expand       __dn_expand
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#define res_init        __res_init
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#define res_randomid    __res_randomid
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#define res_query       __res_query
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#define res_search      __res_search
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#define res_querydomain __res_querydomain
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#define res_mkquery     __res_mkquery
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#define res_send        __res_send
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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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#define res_close       __res_close
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#define res_mkupdate    __res_mkupdate
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#define res_mkupdrec    __res_mkupdrec
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#define res_freeupdrec  __res_freeupdrec
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__BEGIN_DECLS
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int             res_hnok __P((const char *));
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int             res_ownok __P((const char *));
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int             res_mailok __P((const char *));
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int             res_dnok __P((const char *));
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int             sym_ston __P((const struct res_sym *, const char *, int *));
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const char *    sym_ntos __P((const struct res_sym *, int, int *));
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const char *    sym_ntop __P((const struct res_sym *, int, int *));
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int             b64_ntop __P((u_char const *, size_t, char *, size_t));
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int             b64_pton __P((char const *, u_char *, size_t));
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int             loc_aton __P((const char *, u_char *));
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const char *    loc_ntoa __P((const u_char *, char *));
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int             dn_skipname __P((const u_char *, const u_char *));
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void            fp_resstat __P((struct __res_state *, FILE *));
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void            fp_query __P((const u_char *, FILE *));
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void            fp_nquery __P((const u_char *, int, FILE *));
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const char *    hostalias __P((const char *));
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void            putlong __P((u_int32_t, u_char *));
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void            putshort __P((u_int16_t, u_char *));
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const char *    p_class __P((int));
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const char *    p_time __P((u_int32_t));
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const char *    p_type __P((int));
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void            p_query __P((const u_char *));
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const u_char *  p_cdnname __P((const u_char *, const u_char *, int, FILE *));
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const u_char *  p_cdname __P((const u_char *, const u_char *, FILE *));
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const u_char *  p_fqnname __P((const u_char *, const u_char *,
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                               int, char *, int));
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const u_char *  p_fqname __P((const u_char *, const u_char *, FILE *));
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const char *    p_option __P((u_long));
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char *          p_secstodate __P((u_long));
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int             dn_count_labels __P((const char *));
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int             dn_comp __P((const char *, u_char *, int,
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                             u_char **, u_char **));
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int             dn_expand __P((const u_char *, const u_char *, const u_char *,
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                               char *, int));
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int             res_init __P((void));
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u_int           res_randomid __P((void));
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int             res_query __P((const char *, int, int, u_char *, int));
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int             res_search __P((const char *, int, int, u_char *, int));
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int             res_querydomain __P((const char *, const char *, int, int,
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                                     u_char *, int));
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int             res_mkquery __P((int, const char *, int, int, const u_char *,
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                                 int, const u_char *, u_char *, int));
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int             res_send __P((const u_char *, int, u_char *, int));
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int             res_isourserver __P((const struct sockaddr_in *));
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int             res_nameinquery __P((const char *, int, int,
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                                     const u_char *, const u_char *));
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int             res_queriesmatch __P((const u_char *, const u_char *,
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                                      const u_char *, const u_char *));
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void            res_close __P((void));
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const char *    p_section __P((int, int));
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/* XXX The following depend on the ns_updrec typedef in arpa/nameser.h */
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#ifdef _ARPA_NAMESER_H_
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int             res_update __P((ns_updrec *));
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int             res_mkupdate __P((ns_updrec *, u_char *, int));
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ns_updrec *     res_mkupdrec __P((int, const char *, u_int, u_int, u_long));
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void            res_freeupdrec __P((ns_updrec *));
303
#endif
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__END_DECLS
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#endif /* !_RESOLV_H_ */

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