dns.subproj/resolv8_compat.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * ++Copyright++ 1983, 1987, 1989, 1993
  27  * -
  28  * Copyright (c) 1983, 1987, 1989, 1993
  29  *    The Regents of the University of California.  All rights reserved.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. All advertising materials mentioning features or use of this software
  40  *    must display the following acknowledgement:
  41  *      This product includes software developed by the University of
  42  *      California, Berkeley and its contributors.
  43  * 4. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  * -
  59  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
  60  *
  61  * Permission to use, copy, modify, and distribute this software for any
  62  * purpose with or without fee is hereby granted, provided that the above
  63  * copyright notice and this permission notice appear in all copies, and that
  64  * the name of Digital Equipment Corporation not be used in advertising or
  65  * publicity pertaining to distribution of the document or software without
  66  * specific, written prior permission.
  67  *
  68  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  69  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  70  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
  71  * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  72  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  73  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  74  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  75  * SOFTWARE.
  76  * -
  77  * --Copyright--
  78  */
  79
  80 /*
  81  *      @(#)resolv.h    8.1 (Berkeley) 6/2/93
  82  *      $Id: resolv8_compat.h,v 1.2 2003/02/18 17:29:25 majka Exp $
  83  */
  84
  85 #ifndef _RESOLV_H_
  86 #define _RESOLV_H_
  87
  88 #include <sys/param.h>
  89 #if (!defined(BSD)) || (BSD < 199306)
  90 # include <sys/bitypes.h>
  91 #else
  92 # include <sys/types.h>
  93 #endif
  94 #include <sys/cdefs.h>
  95 #include <stdio.h>
  96
  97 /*
  98  * revision information.  this is the release date in YYYYMMDD format.
  99  * it can change every day so the right thing to do with it is use it
 100  * in preprocessor commands such as "#if (__RES > 19931104)".  do not
 101  * compare for equality; rather, use it to determine whether your resolver
 102  * is new enough to contain a certain feature.
 103  */
 104
 105 #define __RES   19950621
 106
 107 /*
 108  * Resolver configuration file.
 109  * Normally not present, but may contain the address of the
 110  * inital name server(s) to query and the domain search list.
 111  */
 112
 113 #ifndef _PATH_RESCONF
 114 #define _PATH_RESCONF        "/etc/resolv.conf"
 115 #endif
 116
 117 /*
 118  * Global defines and variables for resolver stub.
 119  */
 120 #define MAXNS                   3       /* max # name servers we'll track */
 121 #define MAXDFLSRCH              3       /* # default domain levels to try */
 122 #define MAXDNSRCH               6       /* max # domains in search path */
 123 #define LOCALDOMAINPARTS        2       /* min levels in name that is "local" */
 124
 125 #define RES_TIMEOUT             5       /* min. seconds between retries */
 126 #define MAXRESOLVSORT           10      /* number of net to sort on */
 127 #define RES_MAXNDOTS            15      /* should reflect bit field size */
 128
 129 struct __res_state {
 130         int     retrans;                /* retransmition time interval */
 131         int     retry;                  /* number of times to retransmit */
 132         u_long  options;                /* option flags - see below. */
 133         int     nscount;                /* number of name servers */
 134         struct sockaddr_in
 135                 nsaddr_list[MAXNS];     /* address of name server */
 136 #define nsaddr  nsaddr_list[0]          /* for backward compatibility */
 137         u_short id;                     /* current packet id */
 138         char    *dnsrch[MAXDNSRCH+1];   /* components of domain to search */
 139         char    defdname[MAXDNAME];     /* default domain */
 140         u_long  pfcode;                 /* RES_PRF_ flags - see below. */
 141         unsigned ndots:4;               /* threshold for initial abs. query */
 142         unsigned nsort:4;               /* number of elements in sort_list[] */
 143         char    unused[3];
 144         struct {
 145                 struct in_addr  addr;
 146                 u_int32_t       mask;
 147         } sort_list[MAXRESOLVSORT];
 148 };
 149
 150 /*
 151  * Resolver options (keep these in synch with res_debug.c, please)
 152  */
 153 #define RES_INIT        0x00000001      /* address initialized */
 154 #define RES_DEBUG       0x00000002      /* print debug messages */
 155 #define RES_AAONLY      0x00000004      /* authoritative answers only (!IMPL)*/
 156 #define RES_USEVC       0x00000008      /* use virtual circuit */
 157 #define RES_PRIMARY     0x00000010      /* query primary server only (!IMPL) */
 158 #define RES_IGNTC       0x00000020      /* ignore trucation errors */
 159 #define RES_RECURSE     0x00000040      /* recursion desired */
 160 #define RES_DEFNAMES    0x00000080      /* use default domain name */
 161 #define RES_STAYOPEN    0x00000100      /* Keep TCP socket open */
 162 #define RES_DNSRCH      0x00000200      /* search up local domain tree */
 163 #define RES_INSECURE1   0x00000400      /* type 1 security disabled */
 164 #define RES_INSECURE2   0x00000800      /* type 2 security disabled */
 165 #define RES_NOALIASES   0x00001000      /* shuts off HOSTALIASES feature */
 166
 167 #define RES_DEFAULT     (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
 168
 169 /*
 170  * Resolver "pfcode" values.  Used by dig.
 171  */
 172 #define RES_PRF_STATS   0x00000001
 173 /*                      0x00000002      */
 174 #define RES_PRF_CLASS   0x00000004
 175 #define RES_PRF_CMD     0x00000008
 176 #define RES_PRF_QUES    0x00000010
 177 #define RES_PRF_ANS     0x00000020
 178 #define RES_PRF_AUTH    0x00000040
 179 #define RES_PRF_ADD     0x00000080
 180 #define RES_PRF_HEAD1   0x00000100
 181 #define RES_PRF_HEAD2   0x00000200
 182 #define RES_PRF_TTLID   0x00000400
 183 #define RES_PRF_HEADX   0x00000800
 184 #define RES_PRF_QUERY   0x00001000
 185 #define RES_PRF_REPLY   0x00002000
 186 #define RES_PRF_INIT    0x00004000
 187 /*                      0x00008000      */
 188
 189 /* hooks are still experimental as of 4.9.2 */
 190 typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
 191         res_sendhookact;
 192
 193 typedef res_sendhookact (*res_send_qhook)__P((struct sockaddr_in * const *ns,
 194                                               const u_char **query,
 195                                               int *querylen,
 196                                               u_char *ans,
 197                                               int anssiz,
 198                                               int *resplen));
 199
 200 typedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr_in *ns,
 201                                               const u_char *query,
 202                                               int querylen,
 203                                               u_char *ans,
 204                                               int anssiz,
 205                                               int *resplen));
 206
 207 extern struct __res_state _res;
 208
 209 /* Private routines shared between libc/net, named, nslookup and others. */
 210 #define dn_skipname     __dn_skipname
 211 #define fp_query        __fp_query
 212 #define fp_nquery       __fp_nquery
 213 #define hostalias       __hostalias
 214 #define putlong         __putlong
 215 #define putshort        __putshort
 216 #define p_class         __p_class
 217 #define p_time          __p_time
 218 #define p_type          __p_type
 219 #define p_cdnname       __p_cdnname
 220 #define p_cdname        __p_cdname
 221 #define p_fqname        __p_fqname
 222 #define p_rr            __p_rr
 223 #define p_option        __p_option
 224 #define res_randomid    __res_randomid
 225 #define res_isourserver __res_isourserver
 226 #define res_nameinquery __res_nameinquery
 227 #define res_queriesmatch __res_queriesmatch
 228 __BEGIN_DECLS
 229 int      __dn_skipname __P((const u_char *, const u_char *));
 230 void     __fp_resstat __P((struct __res_state *, FILE *));
 231 void     __fp_query __P((const u_char *, FILE *));
 232 void     __fp_nquery __P((const u_char *, int, FILE *));
 233 char    *__hostalias __P((const char *));
 234 void     __putlong __P((u_int32_t, u_char *));
 235 void     __putshort __P((u_int16_t, u_char *));
 236 char    *__p_time __P((u_int32_t));
 237 void     __p_query __P((const u_char *));
 238 const u_char *__p_cdnname __P((const u_char *, const u_char *, int, FILE *));
 239 const u_char *__p_cdname __P((const u_char *, const u_char *, FILE *));
 240 const u_char *__p_fqname __P((const u_char *, const u_char *, FILE *));
 241 const u_char *__p_rr __P((const u_char *, const u_char *, FILE *));
 242 const char *__p_type __P((int));
 243 const char *__p_class __P((int));
 244 const char *__p_option __P((u_long option));
 245 int      dn_comp __P((const char *, u_char *, int, u_char **, u_char **));
 246 int      dn_expand __P((const u_char *, const u_char *, const u_char *,
 247                         char *, int));
 248 int      res_init __P((void));
 249 u_int16_t res_randomid __P((void));
 250 int      res_query __P((const char *, int, int, u_char *, int));
 251 int      res_search __P((const char *, int, int, u_char *, int));
 252 int      res_querydomain __P((const char *, const char *, int, int,
 253                               u_char *, int));
 254 int      res_mkquery __P((int, const char *, int, int, const u_char *, int,
 255                           const u_char *, u_char *, int));
 256 int      res_send __P((const u_char *, int, u_char *, int));
 257 int      res_isourserver __P((const struct sockaddr_in *));
 258 int      res_nameinquery __P((const char *, int, int,
 259                               const u_char *, const u_char *));
 260 int      res_queriesmatch __P((const u_char *, const u_char *,
 261                                const u_char *, const u_char *));
 262 __END_DECLS
 263
 264 #endif /* !_RESOLV_H_ */