| | 1 | /* |
| | 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights |
| | 7 | * Reserved. This file contains Original Code and/or Modifications of |
| | 8 | * Original Code as defined in and that are subject to the Apple Public |
| | 9 | * Source License Version 1.1 (the "License"). You may not use this file |
| | 10 | * except in compliance with the License. Please obtain a copy of the |
| | 11 | * License at http://www.apple.com/publicsource and read it before using |
| | 12 | * this file. |
| | 13 | * |
| | 14 | * The Original Code and all software distributed under the License are |
| | 15 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 16 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 17 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 18 | * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the |
| | 19 | * License for the specific language governing rights and limitations |
| | 20 | * under the License. |
| | 21 | * |
| | 22 | * @APPLE_LICENSE_HEADER_END@ |
| | 23 | */ |
| | 24 | /* |
| | 25 | * ++Copyright++ 1983, 1987, 1989, 1993 |
| | 26 | * - |
| | 27 | * Copyright (c) 1983, 1987, 1989, 1993 |
| | 28 | * The Regents of the University of California. All rights reserved. |
| | 29 | * |
| | 30 | * Redistribution and use in source and binary forms, with or without |
| | 31 | * modification, are permitted provided that the following conditions |
| | 32 | * are met: |
| | 33 | * 1. Redistributions of source code must retain the above copyright |
| | 34 | * notice, this list of conditions and the following disclaimer. |
| | 35 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 36 | * notice, this list of conditions and the following disclaimer in the |
| | 37 | * documentation and/or other materials provided with the distribution. |
| | 38 | * 3. All advertising materials mentioning features or use of this software |
| | 39 | * must display the following acknowledgement: |
| | 40 | * This product includes software developed by the University of |
| | 41 | * California, Berkeley and its contributors. |
| | 42 | * 4. Neither the name of the University nor the names of its contributors |
| | 43 | * may be used to endorse or promote products derived from this software |
| | 44 | * without specific prior written permission. |
| | 45 | * |
| | 46 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 47 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 48 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 49 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 50 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 51 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 52 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 53 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 54 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 55 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 56 | * SUCH DAMAGE. |
| | 57 | * - |
| | 58 | * Portions Copyright (c) 1993 by Digital Equipment Corporation. |
| | 59 | * |
| | 60 | * Permission to use, copy, modify, and distribute this software for any |
| | 61 | * purpose with or without fee is hereby granted, provided that the above |
| | 62 | * copyright notice and this permission notice appear in all copies, and that |
| | 63 | * the name of Digital Equipment Corporation not be used in advertising or |
| | 64 | * publicity pertaining to distribution of the document or software without |
| | 65 | * specific, written prior permission. |
| | 66 | * |
| | 67 | * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL |
| | 68 | * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES |
| | 69 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT |
| | 70 | * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| | 71 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| | 72 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
| | 73 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
| | 74 | * SOFTWARE. |
| | 75 | * - |
| | 76 | * --Copyright-- |
| | 77 | */ |
| | 78 | |
| | 79 | /* |
| | 80 | * @(#)resolv.h 8.1 (Berkeley) 6/2/93 |
| | 81 | * $Id: resolv.h,v 1.2 1999/10/14 21:56:45 wsanchez Exp $ |
| | 82 | */ |
| | 83 | |
| | 84 | #ifndef _RESOLV_H_ |
| | 85 | #define _RESOLV_H_ |
| | 86 | |
| | 87 | #include <sys/param.h> |
| | 88 | #if (!defined(BSD)) || (BSD < 199306) |
| | 89 | # include <sys/bitypes.h> |
| | 90 | #else |
| | 91 | # include <sys/types.h> |
| | 92 | #endif |
| | 93 | #include <sys/cdefs.h> |
| | 94 | #include <stdio.h> |
| | 95 | |
| | 96 | /* |
| | 97 | * revision information. this is the release date in YYYYMMDD format. |
| | 98 | * it can change every day so the right thing to do with it is use it |
| | 99 | * in preprocessor commands such as "#if (__RES > 19931104)". do not |
| | 100 | * compare for equality; rather, use it to determine whether your resolver |
| | 101 | * is new enough to contain a certain feature. |
| | 102 | */ |
| | 103 | |
| | 104 | #define __RES 19950621 |
| | 105 | |
| | 106 | /* |
| | 107 | * Resolver configuration file. |
| | 108 | * Normally not present, but may contain the address of the |
| | 109 | * inital name server(s) to query and the domain search list. |
| | 110 | */ |
| | 111 | |
| | 112 | #ifndef _PATH_RESCONF |
| | 113 | #define _PATH_RESCONF "/etc/resolv.conf" |
| | 114 | #endif |
| | 115 | |
| | 116 | /* |
| | 117 | * Global defines and variables for resolver stub. |
| | 118 | */ |
| | 119 | #define MAXNS 3 /* max # name servers we'll track */ |
| | 120 | #define MAXDFLSRCH 3 /* # default domain levels to try */ |
| | 121 | #define MAXDNSRCH 6 /* max # domains in search path */ |
| | 122 | #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ |
| | 123 | |
| | 124 | #define RES_TIMEOUT 5 /* min. seconds between retries */ |
| | 125 | #define MAXRESOLVSORT 10 /* number of net to sort on */ |
| | 126 | #define RES_MAXNDOTS 15 /* should reflect bit field size */ |
| | 127 | |
| | 128 | struct __res_state { |
| | 129 | int retrans; /* retransmition time interval */ |
| | 130 | int retry; /* number of times to retransmit */ |
| | 131 | u_long options; /* option flags - see below. */ |
| | 132 | int nscount; /* number of name servers */ |
| | 133 | struct sockaddr_in |
| | 134 | nsaddr_list[MAXNS]; /* address of name server */ |
| | 135 | #define nsaddr nsaddr_list[0] /* for backward compatibility */ |
| | 136 | u_short id; /* current packet id */ |
| | 137 | char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ |
| | 138 | char defdname[MAXDNAME]; /* default domain */ |
| | 139 | u_long pfcode; /* RES_PRF_ flags - see below. */ |
| | 140 | unsigned ndots:4; /* threshold for initial abs. query */ |
| | 141 | unsigned nsort:4; /* number of elements in sort_list[] */ |
| | 142 | char unused[3]; |
| | 143 | struct { |
| | 144 | struct in_addr addr; |
| | 145 | u_int32_t mask; |
| | 146 | } sort_list[MAXRESOLVSORT]; |
| | 147 | }; |
| | 148 | |
| | 149 | /* |
| | 150 | * Resolver options (keep these in synch with res_debug.c, please) |
| | 151 | */ |
| | 152 | #define RES_INIT 0x00000001 /* address initialized */ |
| | 153 | #define RES_DEBUG 0x00000002 /* print debug messages */ |
| | 154 | #define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/ |
| | 155 | #define RES_USEVC 0x00000008 /* use virtual circuit */ |
| | 156 | #define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */ |
| | 157 | #define RES_IGNTC 0x00000020 /* ignore trucation errors */ |
| | 158 | #define RES_RECURSE 0x00000040 /* recursion desired */ |
| | 159 | #define RES_DEFNAMES 0x00000080 /* use default domain name */ |
| | 160 | #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */ |
| | 161 | #define RES_DNSRCH 0x00000200 /* search up local domain tree */ |
| | 162 | #define RES_INSECURE1 0x00000400 /* type 1 security disabled */ |
| | 163 | #define RES_INSECURE2 0x00000800 /* type 2 security disabled */ |
| | 164 | #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */ |
| | 165 | |
| | 166 | #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) |
| | 167 | |
| | 168 | /* |
| | 169 | * Resolver "pfcode" values. Used by dig. |
| | 170 | */ |
| | 171 | #define RES_PRF_STATS 0x00000001 |
| | 172 | /* 0x00000002 */ |
| | 173 | #define RES_PRF_CLASS 0x00000004 |
| | 174 | #define RES_PRF_CMD 0x00000008 |
| | 175 | #define RES_PRF_QUES 0x00000010 |
| | 176 | #define RES_PRF_ANS 0x00000020 |
| | 177 | #define RES_PRF_AUTH 0x00000040 |
| | 178 | #define RES_PRF_ADD 0x00000080 |
| | 179 | #define RES_PRF_HEAD1 0x00000100 |
| | 180 | #define RES_PRF_HEAD2 0x00000200 |
| | 181 | #define RES_PRF_TTLID 0x00000400 |
| | 182 | #define RES_PRF_HEADX 0x00000800 |
| | 183 | #define RES_PRF_QUERY 0x00001000 |
| | 184 | #define RES_PRF_REPLY 0x00002000 |
| | 185 | #define RES_PRF_INIT 0x00004000 |
| | 186 | /* 0x00008000 */ |
| | 187 | |
| | 188 | /* hooks are still experimental as of 4.9.2 */ |
| | 189 | typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } |
| | 190 | res_sendhookact; |
| | 191 | |
| | 192 | typedef res_sendhookact (*res_send_qhook)__P((struct sockaddr_in * const *ns, |
| | 193 | const u_char **query, |
| | 194 | int *querylen, |
| | 195 | u_char *ans, |
| | 196 | int anssiz, |
| | 197 | int *resplen)); |
| | 198 | |
| | 199 | typedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr_in *ns, |
| | 200 | const u_char *query, |
| | 201 | int querylen, |
| | 202 | u_char *ans, |
| | 203 | int anssiz, |
| | 204 | int *resplen)); |
| | 205 | |
| | 206 | extern struct __res_state _res; |
| | 207 | |
| | 208 | /* Private routines shared between libc/net, named, nslookup and others. */ |
| | 209 | #define dn_skipname __dn_skipname |
| | 210 | #define fp_query __fp_query |
| | 211 | #define fp_nquery __fp_nquery |
| | 212 | #define hostalias __hostalias |
| | 213 | #define putlong __putlong |
| | 214 | #define putshort __putshort |
| | 215 | #define p_class __p_class |
| | 216 | #define p_time __p_time |
| | 217 | #define p_type __p_type |
| | 218 | #define p_cdnname __p_cdnname |
| | 219 | #define p_cdname __p_cdname |
| | 220 | #define p_fqname __p_fqname |
| | 221 | #define p_rr __p_rr |
| | 222 | #define p_option __p_option |
| | 223 | #define res_randomid __res_randomid |
| | 224 | #define res_isourserver __res_isourserver |
| | 225 | #define res_nameinquery __res_nameinquery |
| | 226 | #define res_queriesmatch __res_queriesmatch |
| | 227 | __BEGIN_DECLS |
| | 228 | int __dn_skipname __P((const u_char *, const u_char *)); |
| | 229 | void __fp_resstat __P((struct __res_state *, FILE *)); |
| | 230 | void __fp_query __P((const u_char *, FILE *)); |
| | 231 | void __fp_nquery __P((const u_char *, int, FILE *)); |
| | 232 | char *__hostalias __P((const char *)); |
| | 233 | void __putlong __P((u_int32_t, u_char *)); |
| | 234 | void __putshort __P((u_int16_t, u_char *)); |
| | 235 | char *__p_time __P((u_int32_t)); |
| | 236 | void __p_query __P((const u_char *)); |
| | 237 | const u_char *__p_cdnname __P((const u_char *, const u_char *, int, FILE *)); |
| | 238 | const u_char *__p_cdname __P((const u_char *, const u_char *, FILE *)); |
| | 239 | const u_char *__p_fqname __P((const u_char *, const u_char *, FILE *)); |
| | 240 | const u_char *__p_rr __P((const u_char *, const u_char *, FILE *)); |
| | 241 | const char *__p_type __P((int)); |
| | 242 | const char *__p_class __P((int)); |
| | 243 | const char *__p_option __P((u_long option)); |
| | 244 | int dn_comp __P((const char *, u_char *, int, u_char **, u_char **)); |
| | 245 | int dn_expand __P((const u_char *, const u_char *, const u_char *, |
| | 246 | char *, int)); |
| | 247 | int res_init __P((void)); |
| | 248 | u_int16_t res_randomid __P((void)); |
| | 249 | int res_query __P((const char *, int, int, u_char *, int)); |
| | 250 | int res_search __P((const char *, int, int, u_char *, int)); |
| | 251 | int res_querydomain __P((const char *, const char *, int, int, |
| | 252 | u_char *, int)); |
| | 253 | int res_mkquery __P((int, const char *, int, int, const u_char *, int, |
| | 254 | const u_char *, u_char *, int)); |
| | 255 | int res_send __P((const u_char *, int, u_char *, int)); |
| | 256 | int res_isourserver __P((const struct sockaddr_in *)); |
| | 257 | int res_nameinquery __P((const char *, int, int, |
| | 258 | const u_char *, const u_char *)); |
| | 259 | int res_queriesmatch __P((const u_char *, const u_char *, |
| | 260 | const u_char *, const u_char *)); |
| | 261 | __END_DECLS |
| | 262 | |
| | 263 | #endif /* !_RESOLV_H_ */ |
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