1 /* 2 * Copyright (c) 1983, 1987, 1989 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /* 31 * Portions Copyright (c) 1996-1999 by Internet Software Consortium. 32 * 33 * Permission to use, copy, modify, and distribute this software for any 34 * purpose with or without fee is hereby granted, provided that the above 35 * copyright notice and this permission notice appear in all copies. 36 * 37 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS 38 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE 40 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 41 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 42 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 43 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 44 * SOFTWARE. 45 */ 46 47 /* 48 * @(#)resolv.h 8.1 (Berkeley) 6/2/93 49 * $BINDId: resolv.h,v 8.31 2000/03/30 20:16:50 vixie Exp $ 50 */ 51 52 #ifndef _RESOLV_H_ 53 #define _RESOLV_H_ 54 55 #include <sys/cdefs.h> 56 #include <sys/param.h> 57 #include <sys/types.h> 58 #include <stdio.h> 59 #include <netinet/in.h> 60 #include <arpa/nameser.h> 61 #include <bits/types/res_state.h> 62 63 /* 64 * Global defines and variables for resolver stub. 65 */ 66 #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ 67 68 #define RES_TIMEOUT 5 /* min. seconds between retries */ 69 #define RES_MAXNDOTS 15 /* should reflect bit field size */ 70 #define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */ 71 #define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */ 72 #define RES_DFLRETRY 2 /* Default #/tries. */ 73 #define RES_MAXTIME 65535 /* Infinity, in milliseconds. */ 74 75 #define nsaddr nsaddr_list[0] /* for backward compatibility */ 76 77 /* 78 * Revision information. This is the release date in YYYYMMDD format. 79 * It can change every day so the right thing to do with it is use it 80 * in preprocessor commands such as "#if (__RES > 19931104)". Do not 81 * compare for equality; rather, use it to determine whether your resolver 82 * is new enough to contain a certain feature. 83 */ 84 85 #define __RES 19991006 86 87 /* 88 * Resolver configuration file. 89 * Normally not present, but may contain the address of the 90 * inital name server(s) to query and the domain search list. 91 */ 92 93 #ifndef _PATH_RESCONF 94 #define _PATH_RESCONF "/etc/resolv.conf" 95 #endif 96 97 struct res_sym { 98 int number; /* Identifying number, like T_MX */ 99 char * name; /* Its symbolic name, like "MX" */ 100 char * humanname; /* Its fun name, like "mail exchanger" */ 101 }; 102 103 /* 104 * Resolver options (keep these in synch with res_debug.c, please) 105 */ 106 #define RES_INIT 0x00000001 /* address initialized */ 107 #define RES_DEBUG 0x00000002 /* print debug messages */ 108 #define RES_AAONLY \ 109 __glibc_macro_warning ("RES_AAONLY is deprecated") 0x00000004 110 #define RES_USEVC 0x00000008 /* use virtual circuit */ 111 #define RES_PRIMARY \ 112 __glibc_macro_warning ("RES_PRIMARY is deprecated") 0x00000010 113 #define RES_IGNTC 0x00000020 /* ignore trucation errors */ 114 #define RES_RECURSE 0x00000040 /* recursion desired */ 115 #define RES_DEFNAMES 0x00000080 /* use default domain name */ 116 #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */ 117 #define RES_DNSRCH 0x00000200 /* search up local domain tree */ 118 #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */ 119 #define RES_ROTATE 0x00004000 /* rotate ns list after each query */ 120 #define RES_NOCHECKNAME \ 121 __glibc_macro_warning ("RES_NOCHECKNAME is deprecated") 0x00008000 122 #define RES_KEEPTSIG \ 123 __glibc_macro_warning ("RES_KEEPTSIG is deprecated") 0x00010000 124 #define RES_BLAST \ 125 __glibc_macro_warning ("RES_BLAST is deprecated") 0x00020000 126 #define RES_USE_EDNS0 0x00100000 /* Use EDNS0. */ 127 #define RES_SNGLKUP 0x00200000 /* one outstanding request at a time */ 128 #define RES_SNGLKUPREOP 0x00400000 /* -"-, but open new socket for each 129 request */ 130 #define RES_USE_DNSSEC 0x00800000 /* use DNSSEC using OK bit in OPT */ 131 #define RES_NOTLDQUERY 0x01000000 /* Do not look up unqualified name 132 as a TLD. */ 133 #define RES_NORELOAD 0x02000000 /* No automatic configuration reload. */ 134 #define RES_TRUSTAD 0x04000000 /* Request AD bit, keep it in responses. */ 135 #define RES_NOAAAA 0x08000000 /* Suppress AAAA queries. */ 136 137 #define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH) 138 139 /* 140 * Resolver "pfcode" values. Used by dig. 141 */ 142 #define RES_PRF_STATS 0x00000001 143 #define RES_PRF_UPDATE 0x00000002 144 #define RES_PRF_CLASS 0x00000004 145 #define RES_PRF_CMD 0x00000008 146 #define RES_PRF_QUES 0x00000010 147 #define RES_PRF_ANS 0x00000020 148 #define RES_PRF_AUTH 0x00000040 149 #define RES_PRF_ADD 0x00000080 150 #define RES_PRF_HEAD1 0x00000100 151 #define RES_PRF_HEAD2 0x00000200 152 #define RES_PRF_TTLID 0x00000400 153 #define RES_PRF_HEADX 0x00000800 154 #define RES_PRF_QUERY 0x00001000 155 #define RES_PRF_REPLY 0x00002000 156 #define RES_PRF_INIT 0x00004000 157 /* 0x00008000 */ 158 159 /* Things involving an internal (static) resolver context. */ 160 __BEGIN_DECLS 161 extern struct __res_state *__res_state(void) __attribute__ ((__const__)); 162 __END_DECLS 163 #define _res (*__res_state()) 164 165 #define fp_nquery __fp_nquery 166 #define fp_query __fp_query 167 #define hostalias __hostalias 168 #define p_query __p_query 169 #define res_close __res_close 170 #define res_init __res_init 171 #define res_isourserver __res_isourserver 172 173 #ifdef _LIBC 174 # define __RESOLV_DEPRECATED 175 # define __RESOLV_DEPRECATED_MSG(msg) 176 #else 177 # define __RESOLV_DEPRECATED __attribute_deprecated__ 178 # define __RESOLV_DEPRECATED_MSG(msg) __attribute_deprecated_msg__ (msg) 179 #endif 180 181 __BEGIN_DECLS 182 void fp_nquery (const unsigned char *, int, FILE *) __THROW 183 __RESOLV_DEPRECATED; 184 void fp_query (const unsigned char *, FILE *) __THROW 185 __RESOLV_DEPRECATED; 186 const char * hostalias (const char *) __THROW 187 __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead"); 188 void p_query (const unsigned char *) __THROW 189 __RESOLV_DEPRECATED; 190 void res_close (void) __THROW; 191 int res_init (void) __THROW; 192 int res_isourserver (const struct sockaddr_in *) __THROW 193 __RESOLV_DEPRECATED; 194 int res_mkquery (int, const char *, int, int, 195 const unsigned char *, int, const unsigned char *, 196 unsigned char *, int) __THROW; 197 int res_query (const char *, int, int, unsigned char *, int) 198 __THROW; 199 int res_querydomain (const char *, const char *, int, int, 200 unsigned char *, int) __THROW; 201 int res_search (const char *, int, int, unsigned char *, int) 202 __THROW; 203 int res_send (const unsigned char *, int, unsigned char *, int) 204 __THROW; 205 __END_DECLS 206 207 #define b64_ntop __b64_ntop 208 #define b64_pton __b64_pton 209 #define dn_count_labels __dn_count_labels 210 #define fp_resstat __fp_resstat 211 #define loc_aton __loc_aton 212 #define loc_ntoa __loc_ntoa 213 #define p_cdname __p_cdname 214 #define p_cdnname __p_cdnname 215 #define p_class __p_class 216 #define p_fqname __p_fqname 217 #define p_fqnname __p_fqnname 218 #define p_option __p_option 219 #define p_time __p_time 220 #define p_type __p_type 221 #define p_rcode __p_rcode 222 #define putlong __putlong 223 #define putshort __putshort 224 #define res_hostalias __res_hostalias 225 #define res_nameinquery __res_nameinquery 226 #define res_nclose __res_nclose 227 #define res_ninit __res_ninit 228 #define res_queriesmatch __res_queriesmatch 229 #define res_randomid __res_randomid 230 #define sym_ntop __sym_ntop 231 #define sym_ntos __sym_ntos 232 #define sym_ston __sym_ston 233 __BEGIN_DECLS 234 int res_hnok (const char *) __THROW; 235 int res_ownok (const char *) __THROW; 236 int res_mailok (const char *) __THROW; 237 int res_dnok (const char *) __THROW; 238 int sym_ston (const struct res_sym *, const char *, int *) __THROW 239 __RESOLV_DEPRECATED; 240 const char * sym_ntos (const struct res_sym *, int, int *) __THROW 241 __RESOLV_DEPRECATED; 242 const char * sym_ntop (const struct res_sym *, int, int *) __THROW 243 __RESOLV_DEPRECATED; 244 int b64_ntop (const unsigned char *, size_t, char *, size_t) 245 __THROW; 246 int b64_pton (char const *, unsigned char *, size_t) __THROW; 247 int loc_aton (const char *__ascii, unsigned char *__binary) __THROW 248 __RESOLV_DEPRECATED; 249 const char * loc_ntoa (const unsigned char *__binary, char *__ascii) __THROW 250 __RESOLV_DEPRECATED; 251 int dn_skipname (const unsigned char *, const unsigned char *) 252 __THROW; 253 void putlong (uint32_t, unsigned char *) __THROW 254 __RESOLV_DEPRECATED_MSG ("use NS_PUT16 instead"); 255 void putshort (uint16_t, unsigned char *) __THROW 256 __RESOLV_DEPRECATED_MSG ("use NS_PUT32 instead"); 257 const char * p_class (int) __THROW __RESOLV_DEPRECATED; 258 const char * p_time (uint32_t) __THROW __RESOLV_DEPRECATED; 259 const char * p_type (int) __THROW __RESOLV_DEPRECATED; 260 const char * p_rcode (int) __THROW __RESOLV_DEPRECATED; 261 const unsigned char * p_cdnname (const unsigned char *, const unsigned char *, 262 int, FILE *) __THROW __RESOLV_DEPRECATED; 263 const unsigned char * p_cdname (const unsigned char *, const unsigned char *, 264 FILE *) __THROW __RESOLV_DEPRECATED; 265 const unsigned char * p_fqnname (const unsigned char *__cp, 266 const unsigned char *__msg, 267 int, char *, int) __THROW __RESOLV_DEPRECATED; 268 const unsigned char * p_fqname (const unsigned char *, const unsigned char *, 269 FILE *) __THROW __RESOLV_DEPRECATED; 270 const char * p_option (unsigned long __option) __THROW __RESOLV_DEPRECATED; 271 int dn_count_labels (const char *) __THROW __RESOLV_DEPRECATED; 272 int dn_comp (const char *, unsigned char *, int, unsigned char **, 273 unsigned char **) __THROW; 274 int dn_expand (const unsigned char *, const unsigned char *, 275 const unsigned char *, char *, int) __THROW; 276 unsigned int res_randomid (void) __THROW 277 __RESOLV_DEPRECATED_MSG ("use getentropy instead"); 278 int res_nameinquery (const char *, int, int, 279 const unsigned char *, 280 const unsigned char *) __THROW 281 __RESOLV_DEPRECATED; 282 int res_queriesmatch (const unsigned char *, 283 const unsigned char *, 284 const unsigned char *, 285 const unsigned char *) __THROW 286 __RESOLV_DEPRECATED; 287 /* Things involving a resolver context. */ 288 int res_ninit (res_state) __THROW; 289 void fp_resstat (const res_state, FILE *) __THROW 290 __RESOLV_DEPRECATED; 291 const char * res_hostalias (const res_state, const char *, char *, size_t) 292 __THROW __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead"); 293 int res_nquery (res_state, const char *, int, int, 294 unsigned char *, int) __THROW; 295 int res_nsearch (res_state, const char *, int, int, 296 unsigned char *, int) __THROW; 297 int res_nquerydomain (res_state, const char *, const char *, int, 298 int, unsigned char *, int) __THROW; 299 int res_nmkquery (res_state, int, const char *, int, int, 300 const unsigned char *, int, 301 const unsigned char *, unsigned char *, int) 302 __THROW; 303 int res_nsend (res_state, const unsigned char *, int, 304 unsigned char *, int) __THROW; 305 void res_nclose (res_state) __THROW; 306 307 __END_DECLS 308 309 #endif /* !_RESOLV_H_ */ 310