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jeremybenn |
/*-
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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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* $FreeBSD: src/include/resolv.h,v 1.21 2002/03/23 17:24:53 imp 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 <sys/socket.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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* 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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#define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
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#define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
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#define RES_DFLRETRY 2 /* Default #/tries. */
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#define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
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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) (struct sockaddr_in * const *ns, 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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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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res_send_qhook qhook; /* query hook */
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res_send_rhook rhook; /* response hook */
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int res_h_errno; /* last one set for this context */
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int _vcsock; /* PRIVATE: for res_send VC i/o */
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u_int _flags; /* PRIVATE: see below */
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union {
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char pad[52]; /* On an i386 this means 512b total. */
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struct {
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u_int16_t nscount;
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u_int16_t nsmap[MAXNS];
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int nssocks[MAXNS];
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u_int16_t nscount6;
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u_int16_t nsinit;
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struct sockaddr_in6 *nsaddrs[MAXNS];
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unsigned long long int initstamp
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__attribute__((packed));
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#if 0
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unsigned int _initstamp[2];
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#endif
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} _ext;
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} _u;
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};
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typedef struct __res_state *res_state;
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/* for INET6 */
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/*
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* replacement of __res_state, separated to keep binary compatibility.
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*/
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struct __res_state_ext {
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struct sockaddr_storage nsaddr_list[MAXNS];
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struct {
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int af; /* address family for addr, mask */
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union {
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struct in_addr ina;
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struct in6_addr in6a;
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} addr, mask;
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} sort_list[MAXRESOLVSORT];
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};
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/*
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* * Resolver flags (used to be discrete per-module statics ints).
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* */
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#define RES_F_VC 0x00000001 /* socket is TCP */
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#define RES_F_CONN 0x00000002 /* socket is connected */
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/* res_findzonecut() options */
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#define RES_EXHAUSTIVE 0x00000001 /* always do all queries */
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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_ROTATE 0x00004000 /* rotate ns list after each query */
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#define RES_NOCHECKNAME 0x00008000 /* do not check names for sanity. */
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#define RES_KEEPTSIG 0x00010000 /* do not strip TSIG records */
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#define RES_BLAST 0x00020000 /* blast all recursive servers */
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#define RES_USEBSTRING 0x00040000 /* IPv6 reverse lookup with byte
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strings */
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#define RES_NOIP6DOTINT 0x00080000 /* Do not use .ip6.int in IPv6
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reverse lookup */
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#define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT)
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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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#define RES_SET_H_ERRNO(r,x) \
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do \
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{ \
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(r)->res_h_errno = x; \
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h_errno = (x); \
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} \
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while (0)
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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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/* for INET6 */
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extern struct __res_state_ext _res_ext;
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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_hostalias __res_hostalias
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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_rcode __p_rcode
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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_nclose __res_nclose
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#define res_ninit __res_ninit
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#define res_nmkquery __res_nmkquery
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#define res_npquery __res_npquery
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#define res_nquery __res_nquery
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#define res_nquerydomain __res_nquerydomain
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#define res_nsearch __res_nsearch
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#define res_nsend __res_nsend
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#define res_nisourserver __res_nisourserver
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#define res_queriesmatch __res_queriesmatch
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#define res_close __res_close
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#define res_opt __res_opt
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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(const char *);
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int res_ownok(const char *);
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int res_mailok(const char *);
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int res_dnok(const char *);
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int sym_ston(const struct res_sym *, const char *, int *);
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const char * sym_ntos(const struct res_sym *, int, int *);
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const char * sym_ntop(const struct res_sym *, int, int *);
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326 |
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int b64_ntop(u_char const *, size_t, char *, size_t);
|
327 |
|
|
int b64_pton(char const *, u_char *, size_t);
|
328 |
|
|
int loc_aton(const char *, u_char *);
|
329 |
|
|
const char * loc_ntoa(const u_char *, char *);
|
330 |
|
|
int dn_skipname(const u_char *, const u_char *);
|
331 |
|
|
void fp_resstat(struct __res_state *, FILE *);
|
332 |
|
|
void fp_query(const u_char *, FILE *);
|
333 |
|
|
void fp_nquery(const u_char *, int, FILE *);
|
334 |
|
|
const char * hostalias(const char *);
|
335 |
|
|
void putlong(u_int32_t, u_char *);
|
336 |
|
|
void putshort(u_int16_t, u_char *);
|
337 |
|
|
const char * p_class(int);
|
338 |
|
|
const char * p_rcode (int);
|
339 |
|
|
const char * p_time(u_int32_t);
|
340 |
|
|
const char * p_type(int);
|
341 |
|
|
void p_query(const u_char *);
|
342 |
|
|
const u_char * p_cdnname(const u_char *, const u_char *, int, FILE *);
|
343 |
|
|
const u_char * p_cdname(const u_char *, const u_char *, FILE *);
|
344 |
|
|
const u_char * p_fqnname(const u_char *, const u_char *,
|
345 |
|
|
int, char *, int);
|
346 |
|
|
const u_char * p_fqname(const u_char *, const u_char *, FILE *);
|
347 |
|
|
const char * p_option(u_long);
|
348 |
|
|
char * p_secstodate(u_long);
|
349 |
|
|
int dn_count_labels(const char *);
|
350 |
|
|
int dn_comp(const char *, u_char *, int, u_char **, u_char **);
|
351 |
|
|
int dn_expand(const u_char *, const u_char *, const u_char *,
|
352 |
|
|
char *, int);
|
353 |
|
|
int res_init(void);
|
354 |
|
|
u_int res_randomid(void);
|
355 |
|
|
int res_query(const char *, int, int, u_char *, int);
|
356 |
|
|
int res_search(const char *, int, int, u_char *, int);
|
357 |
|
|
int res_querydomain(const char *, const char *, int, int,
|
358 |
|
|
u_char *, int);
|
359 |
|
|
int res_mkquery(int, const char *, int, int, const u_char *,
|
360 |
|
|
int, const u_char *, u_char *, int);
|
361 |
|
|
int res_send(const u_char *, int, u_char *, int);
|
362 |
|
|
int res_isourserver(const struct sockaddr_in *);
|
363 |
|
|
int res_nameinquery(const char *, int, int,
|
364 |
|
|
const u_char *, const u_char *);
|
365 |
|
|
void res_npquery (const res_state, const u_char *, int, FILE *);
|
366 |
|
|
const char * res_hostalias (const res_state, const char *, char *, size_t);
|
367 |
|
|
int res_nquery (res_state, const char *, int, int, u_char *, int);
|
368 |
|
|
int res_nsearch (res_state, const char *, int, int, u_char *, int);
|
369 |
|
|
int res_nquerydomain (res_state, const char *, const char *, int,
|
370 |
|
|
int, u_char *, int);
|
371 |
|
|
int res_nmkquery (res_state, int, const char *, int, int,
|
372 |
|
|
const u_char *, int, const u_char *, u_char *,
|
373 |
|
|
int);
|
374 |
|
|
int res_nsend (res_state, const u_char *, int, u_char *, int);
|
375 |
|
|
void res_nclose (res_state);
|
376 |
|
|
|
377 |
|
|
int res_queriesmatch(const u_char *, const u_char *,
|
378 |
|
|
const u_char *, const u_char *);
|
379 |
|
|
void res_close(void);
|
380 |
|
|
int res_opt(int, u_char *, int, int);
|
381 |
|
|
const char * p_section(int, int);
|
382 |
|
|
/* XXX The following depend on the ns_updrec typedef in arpa/nameser.h */
|
383 |
|
|
#ifdef _ARPA_NAMESER_H_
|
384 |
|
|
int res_update(ns_updrec *);
|
385 |
|
|
int res_mkupdate(ns_updrec *, u_char *, int);
|
386 |
|
|
ns_updrec * res_mkupdrec(int, const char *, u_int, u_int, u_long);
|
387 |
|
|
void res_freeupdrec(ns_updrec *);
|
388 |
|
|
#endif
|
389 |
|
|
|
390 |
|
|
__END_DECLS
|
391 |
|
|
|
392 |
|
|
#endif /* !_RESOLV_H_ */
|