| 1 | /* resolv.h,v 1.5 2004/09/14 22:27:35 bird Exp */
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| 2 | /** @file
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| 3 | * FreeBSD 5.3
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| 4 | * @changed bird: For IGCC.
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| 5 | */
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| 6 | /*-
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| 7 | * Copyright (c) 1983, 1987, 1989, 1993
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| 8 | * The Regents of the University of California. All rights reserved.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without
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| 11 | * modification, are permitted provided that the following conditions
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| 12 | * are met:
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| 13 | * 1. Redistributions of source code must retain the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright
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| 16 | * notice, this list of conditions and the following disclaimer in the
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| 17 | * documentation and/or other materials provided with the distribution.
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| 18 | * 3. All advertising materials mentioning features or use of this software
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| 19 | * must display the following acknowledgement:
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| 20 | * This product includes software developed by the University of
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| 21 | * California, Berkeley and its contributors.
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| 22 | * 4. Neither the name of the University nor the names of its contributors
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| 23 | * may be used to endorse or promote products derived from this software
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| 24 | * without specific prior written permission.
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| 25 | *
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| 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 36 | * SUCH DAMAGE.
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| 37 | */
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| 38 |
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| 39 | /*
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| 40 | * Portions Copyright (c) 1996 by Internet Software Consortium.
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| 41 | *
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| 42 | * Permission to use, copy, modify, and distribute this software for any
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| 43 | * purpose with or without fee is hereby granted, provided that the above
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| 44 | * copyright notice and this permission notice appear in all copies.
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| 45 | *
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| 46 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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| 47 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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| 48 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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| 49 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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| 50 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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| 51 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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| 52 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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| 53 | * SOFTWARE.
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| 54 | */
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| 55 |
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| 56 | /*
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| 57 | * @(#)resolv.h 8.1 (Berkeley) 6/2/93
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| 58 | * From Id: resolv.h,v 8.12 1998/04/28 19:36:46 halley Exp $
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| 59 | * $FreeBSD: src/include/resolv.h,v 1.25 2004/03/15 17:08:28 des Exp $
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| 60 | */
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| 61 |
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| 62 | #ifndef _RESOLV_H_
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| 63 | #define _RESOLV_H_
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| 64 |
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| 65 | /* toolkit includes a bunch of headers */
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| 66 | #ifndef TCPV40HDRS
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| 67 | #include <sys/param.h>
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| 68 | #include "types.h" /* bird - IBM fancy - #include <types.h> frequently includes the wrong header. */
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| 69 | #include <sys/types.h>
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| 70 | #include <sys/cdefs.h>
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| 71 | #include <sys/socket.h>
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| 72 | #include <stdio.h>
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| 73 | #ifdef __USE_LIBC_TCPIP
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| 74 | #include <netinet/in.h> /* for the struct __res_state */
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| 75 | #endif
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| 76 |
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| 77 | /*
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| 78 | * Revision information. This is the release date in YYYYMMDD format.
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| 79 | * It can change every day so the right thing to do with it is use it
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| 80 | * in preprocessor commands such as "#if (__RES > 19931104)". Do not
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| 81 | * compare for equality; rather, use it to determine whether your resolver
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| 82 | * is new enough to contain a certain feature.
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| 83 | */
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| 84 |
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| 85 | #define __RES 19960801
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| 86 |
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| 87 | /*
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| 88 | * Resolver configuration file.
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| 89 | * Normally not present, but may contain the address of the
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| 90 | * inital name server(s) to query and the domain search list.
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| 91 | */
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| 92 |
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| 93 | #ifndef _PATH_RESCONF
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| 94 | #define _PATH_RESCONF "/@unixroot/etc/resolv.conf"
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| 95 | #endif
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| 96 | #endif /* TCPV40HDRS */
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| 97 |
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| 98 | /*
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| 99 | * Global defines and variables for resolver stub.
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| 100 | */
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| 101 | #define MAXNS 3 /* max # name servers we'll track */
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| 102 | #define MAXDFLSRCH 3 /* # default domain levels to try */
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| 103 | #ifdef TCPV40HDRS
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| 104 | #define MAXDNSRCH 3 /* max # domains in search path */
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| 105 | #else
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| 106 | #define MAXDNSRCH 6 /* max # domains in search path */
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| 107 | #endif
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| 108 | #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
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| 109 |
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| 110 | #ifdef __USE_LIBC_TCPIP
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| 111 | #define RES_TIMEOUT 5 /* min. seconds between retries */
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| 112 | #else
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| 113 | #define RES_TIMEOUT 4 /* min. seconds between retries */
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| 114 | #endif
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| 115 | #ifndef TCPV40HDRS
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| 116 | #define MAXRESOLVSORT 10 /* number of net to sort on */
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| 117 | #define RES_MAXNDOTS 15 /* should reflect bit field size */
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| 118 | #endif
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| 119 | #ifdef __USE_LIBC_TCPIP
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| 120 | #define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
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| 121 | #define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
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| 122 | #endif
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| 123 |
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| 124 | #ifndef TCPV40HDRS
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| 125 |
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| 126 | #pragma pack(4)
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| 127 | struct __res_state {
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| 128 | int retrans; /* retransmition time interval */
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| 129 | int retry; /* number of times to retransmit */
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| 130 | u_long options; /* option flags - see below. */
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| 131 | int nscount; /* number of name servers */
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| 132 | struct sockaddr_in
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| 133 | nsaddr_list[MAXNS]; /* address of name server */
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| 134 | #define nsaddr nsaddr_list[0] /* for backward compatibility */
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| 135 | u_short id; /* current message id */
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| 136 | char defdname[256]; /* default domain (deprecated) */
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| 137 | char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
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| 138 | u_long pfcode; /* RES_PRF_ flags - see below. */
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| 139 | unsigned ndots:4; /* threshold for initial abs. query */
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| 140 | unsigned nsort:4; /* number of elements in sort_list[] */
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| 141 | char unused[3];
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| 142 | struct {
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| 143 | struct in_addr addr;
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| 144 | u_int32_t mask;
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| 145 | } sort_list[MAXRESOLVSORT];
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| 146 | char pad[72]; /* on an i386 this means 512b total */
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| 147 | };
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| 148 | #pragma pack()
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| 149 |
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| 150 | #if 0 /* OS/2 doesn't implement INET6, yet :-) */
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| 151 | /* for INET6 */
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| 152 | /*
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| 153 | * replacement of __res_state, separated to keep binary compatibility.
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| 154 | */
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| 155 | struct __res_state_ext {
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| 156 | struct sockaddr_storage nsaddr_list[MAXNS];
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| 157 | struct {
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| 158 | int af; /* address family for addr, mask */
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| 159 | union {
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| 160 | struct in_addr ina;
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| 161 | struct in6_addr in6a;
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| 162 | } addr, mask;
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| 163 | } sort_list[MAXRESOLVSORT];
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| 164 | };
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| 165 | #endif /* Not implemented */
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| 166 |
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| 167 | #else /* TCPV40HDRS */
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| 168 |
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| 169 | #pragma pack(4)
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| 170 | struct state {
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| 171 | int retrans; /* retransmition time interval */
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| 172 | int retry; /* number of times to retransmit */
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| 173 | long options; /* option flags - see below. */
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| 174 | int nscount; /* number of name servers */
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| 175 | struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
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| 176 | #define nsaddr nsaddr_list[0] /* for backward compatibility */
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| 177 | u_short id; /* current package id */
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| 178 | char defdname[MAXDNAME]; /* default domain */
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| 179 | char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
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| 180 | };
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| 181 | #pragma pack()
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| 182 |
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| 183 | #endif
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| 184 |
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| 185 | /*
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| 186 | * Resolver options (keep these in synch with res_debug.c, please)
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| 187 | */
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| 188 | #define RES_INIT 0x00000001 /* address initialized */
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| 189 | #define RES_DEBUG 0x00000002 /* print debug messages */
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| 190 | #define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/
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| 191 | #define RES_USEVC 0x00000008 /* use virtual circuit */
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| 192 | #define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */
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| 193 | #define RES_IGNTC 0x00000020 /* ignore truncation errors */
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| 194 | #define RES_RECURSE 0x00000040 /* recursion desired */
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| 195 | #define RES_DEFNAMES 0x00000080 /* use default domain name */
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| 196 | #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */
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| 197 | #define RES_DNSRCH 0x00000200 /* search up local domain tree */
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| 198 | #if !defined(TCPV40HDRS)
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| 199 | #define RES_INSECURE1 0x00000400 /* type 1 security disabled */
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| 200 | #define RES_INSECURE2 0x00000800 /* type 2 security disabled */
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| 201 | #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
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| 202 | #define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */
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| 203 | #endif /* !TCPV40HDRS */
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| 204 | /** @todo #define RES_USE_EDNS0 0x40000000*/ /* use EDNS0 */
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| 205 |
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| 206 | #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
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| 207 |
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| 208 | #ifndef TCPV40HDRS
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| 209 | /*
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| 210 | * Resolver "pfcode" values. Used by dig.
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| 211 | */
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| 212 | #define RES_PRF_STATS 0x00000001
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| 213 | /** @todo #define RES_PRF_UPDATE 0x00000002*/
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| 214 | #define RES_PRF_CLASS 0x00000004
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| 215 | #define RES_PRF_CMD 0x00000008
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| 216 | #define RES_PRF_QUES 0x00000010
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| 217 | #define RES_PRF_ANS 0x00000020
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| 218 | #define RES_PRF_AUTH 0x00000040
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| 219 | #define RES_PRF_ADD 0x00000080
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| 220 | #define RES_PRF_HEAD1 0x00000100
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| 221 | #define RES_PRF_HEAD2 0x00000200
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| 222 | #define RES_PRF_TTLID 0x00000400
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| 223 | #define RES_PRF_HEADX 0x00000800
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| 224 | #define RES_PRF_QUERY 0x00001000
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| 225 | #define RES_PRF_REPLY 0x00002000
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| 226 | #define RES_PRF_INIT 0x00004000
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| 227 | /* 0x00008000 */
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| 228 |
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| 229 | typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
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| 230 | res_sendhookact;
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| 231 |
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| 232 | typedef res_sendhookact (* TCPCALL res_send_qhook)(struct sockaddr_in * const *ns,
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| 233 | const u_char **query,
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| 234 | int *querylen,
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| 235 | u_char *ans,
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| 236 | int anssiz,
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| 237 | int *resplen);
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| 238 |
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| 239 | typedef res_sendhookact (* TCPCALL res_send_rhook)(const struct sockaddr_in *ns,
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| 240 | const u_char *query,
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| 241 | int querylen,
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| 242 | u_char *ans,
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| 243 | int anssiz,
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| 244 | int *resplen);
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| 245 |
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| 246 | #pragma pack(4) /* not necessary */
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| 247 | struct res_sym {
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| 248 | int number; /* Identifying number, like T_MX */
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| 249 | char * name; /* Its symbolic name, like "MX" */
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| 250 | char * humanname; /* Its fun name, like "mail exchanger" */
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| 251 | };
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| 252 | #pragma pack()
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| 253 |
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| 254 | __BEGIN_DECLS
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| 255 | extern struct __res_state _ress[2];
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| 256 | #define _res (_ress[0])
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| 257 | /** @todo threaded stuff.... */
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| 258 | __END_DECLS
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| 259 |
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| 260 | extern const struct res_sym __p_class_syms[];
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| 261 | extern const struct res_sym __p_type_syms[];
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| 262 |
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| 263 | /* Private routines shared between libc/net, named, nslookup and others. */
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| 264 | #define res_hnok __res_hnok
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| 265 | #define res_ownok __res_ownok
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| 266 | #define res_mailok __res_mailok
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| 267 | #define res_dnok __res_dnok
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| 268 | #define sym_ston __sym_ston
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| 269 | #define sym_ntos __sym_ntos
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| 270 | #define sym_ntop __sym_ntop
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| 271 | #define b64_ntop __b64_ntop
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| 272 | #define b64_pton __b64_pton
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| 273 | #define loc_ntoa __loc_ntoa
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| 274 | #define loc_aton __loc_aton
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| 275 | #define fp_resstat __fp_resstat
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| 276 | #define p_query __p_query
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| 277 | #define dn_skipname __dn_skipname
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| 278 | /* duplicate in FreeBSD 5.3 */
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| 279 | #define fp_query __fp_query
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| 280 | #define fp_nquery __fp_nquery
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| 281 | #define hostalias __hostalias
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| 282 | #define putlong __putlong
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| 283 | #define putshort __putshort
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| 284 | #define p_class __p_class
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| 285 | #define p_time __p_time
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| 286 | #define p_type __p_type
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| 287 | /* duplicate in FreeBSD 5.3 */
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| 288 | #define p_cdnname __p_cdnname
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| 289 | /*#define p_section __p_section*/
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| 290 | #define p_cdname __p_cdname
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| 291 | #define p_fqnname __p_fqnname
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| 292 | #define p_fqname __p_fqname
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| 293 | #define p_option __p_option
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| 294 | #define p_secstodate __p_secstodate
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| 295 | #define dn_count_labels __dn_count_labels
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| 296 | #define dn_comp __dn_comp
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| 297 | #define dn_expand __dn_expand
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| 298 | #define res_init __res_init
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| 299 | #define res_randomid __res_randomid
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| 300 | #define res_query __res_query
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| 301 | #define res_search __res_search
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| 302 | #define res_querydomain __res_querydomain
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| 303 | #define res_mkquery __res_mkquery
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| 304 | #define res_send __res_send
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| 305 | #define res_isourserver __res_isourserver
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| 306 | #define res_nameinquery __res_nameinquery
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| 307 | #define res_queriesmatch __res_queriesmatch
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| 308 | #define res_close __res_close
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| 309 | /*#define res_opt __res_opt
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| 310 | #define res_mkupdate __res_mkupdate
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| 311 | #define res_mkupdrec __res_mkupdrec
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| 312 | #define res_freeupdrec __res_freeupdrec
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| 313 | */
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| 314 |
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| 315 | /* not in FreeBSD 5.3 header */
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| 316 | #define p_rr __p_rr
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| 317 |
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| 318 |
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| 319 | __BEGIN_DECLS
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| 320 | int TCPCALL res_hnok(const char *);
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| 321 | int TCPCALL res_ownok(const char *);
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| 322 | int TCPCALL res_mailok(const char *);
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| 323 | int TCPCALL res_dnok(const char *);
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| 324 | int TCPCALL sym_ston(const struct res_sym *, char *, int *);
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| 325 | const char * TCPCALL sym_ntos(const struct res_sym *, int, int *);
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| 326 | const char * TCPCALL sym_ntop(const struct res_sym *, int, int *);
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| 327 | int TCPCALL b64_ntop(u_char const *, size_t, char *, size_t);
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| 328 | int TCPCALL b64_pton(char const *, u_char *, size_t);
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| 329 | int TCPCALL loc_aton(const char *, u_char *);
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| 330 | const char * TCPCALL loc_ntoa(const u_char *, char *);
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| 331 | int TCPCALL dn_skipname(const u_char *, const u_char *);
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| 332 | void TCPCALL fp_resstat(struct __res_state *, int);
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| 333 | void TCPCALL fp_query(const u_char *, int);
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| 334 | void TCPCALL fp_nquery(const u_char *, int, int);
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| 335 | const char * TCPCALL hostalias(const char *);
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| 336 | void TCPCALL putlong(u_int32_t, u_char *);
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| 337 | void TCPCALL putshort(u_int16_t, u_char *);
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| 338 | const char * TCPCALL p_class(int);
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| 339 | const char * TCPCALL p_time(u_int32_t);
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| 340 | const char * TCPCALL p_type(int);
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| 341 | void TCPCALL p_query(const u_char *);
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| 342 | const u_char * TCPCALL p_cdnname(const u_char *, const u_char *, int, int);
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| 343 | const u_char * TCPCALL p_cdname(const u_char *, const u_char *, int);
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| 344 | const u_char * TCPCALL p_fqnname(const u_char *cp, const u_char *msg,
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| 345 | int, char *, int);
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| 346 | const u_char * TCPCALL p_fqname(const u_char *, const u_char *, int);
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| 347 | const char * TCPCALL p_option(u_long option);
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| 348 | char * TCPCALL p_secstodate(u_long);
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| 349 | int TCPCALL dn_count_labels(char *);
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| 350 | int TCPCALL dn_comp(const char *, u_char *, int, u_char **, u_char **);
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| 351 | int TCPCALL dn_expand(const u_char *, const u_char *, const u_char *,
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| 352 | char *, int);
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| 353 | int TCPCALL res_init(void);
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| 354 | u_int TCPCALL res_randomid(void);
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| 355 | int TCPCALL res_query(const char *, int, int, u_char *, int);
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| 356 | int TCPCALL res_search(const char *, int, int, u_char *, int);
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| 357 | int TCPCALL res_querydomain(const char *, const char *, int, int,
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| 358 | u_char *, int);
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| 359 | int TCPCALL res_mkquery(int, const char *, int, int, const u_char *, int,
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| 360 | const u_char *, u_char *, int);
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| 361 | int TCPCALL res_send(const u_char *, int, u_char *, int);
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| 362 | int TCPCALL res_isourserver(const struct sockaddr_in *);
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| 363 | int TCPCALL res_nameinquery(const char *, int, int,
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| 364 | const u_char *, const u_char *);
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| 365 | int TCPCALL res_queriesmatch(const u_char *, const u_char *,
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| 366 | const u_char *, const u_char *);
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| 367 | void TCPCALL res_close(void);
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| 368 | /** @todo int res_opt(int, u_char *, int, int); */
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| 369 | /** @todo const char * p_section(int, int); */
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| 370 | /* XXX These must be exported for BIND4 compatibility. */
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| 371 | /** @todo void __putlong(u_int32_t, u_char *); */
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| 372 | /** @todo void __putshort(u_int16_t, u_char *); */
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| 373 | /** @todo u_int32_t _getlong(const u_char *); */
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| 374 | /** @todo u_int16_t _getshort(const u_char *); */
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| 375 | /* XXX The following depend on the ns_updrec typedef in arpa/nameser.h */
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| 376 | #ifdef _ARPA_NAMESER_H_
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| 377 | /** @todo int res_update(ns_updrec *); */
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| 378 | /** @todo int res_mkupdate(ns_updrec *, u_char *, int); */
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| 379 | /** @todo ns_updrec * res_mkupdrec(int, const char *, u_int, u_int, u_long); */
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| 380 | /** @todo void res_freeupdrec(ns_updrec *); */
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| 381 | #endif
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| 382 |
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| 383 |
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| 384 | /* not in FreeBSD 5.3 */
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| 385 | const u_char * TCPCALL p_rr(const u_char *, const u_char *, int);
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| 386 | int TCPCALL dn_find(u_char *exp_dn, u_char *msg,
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| 387 | u_char **dnptrs, u_char **lastdnptr);
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| 388 |
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| 389 | __END_DECLS
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| 390 |
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| 391 | #else /* TCPV40HDRS */
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| 392 |
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| 393 | extern struct state _res;
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| 394 |
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| 395 | #endif /* TCPV40HDRS */
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| 396 |
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| 397 |
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| 398 | #endif /* !_RESOLV_H_ */
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