1 /* 2 * Copyright 2005 Niels Provos <provos@citi.umich.edu> 3 * 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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Niels Provos. 16 * 4. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* $OpenBSD: resolv.h,v 1.15 2004/01/22 21:48:02 espie Exp $ */ 32 33 /* 34 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. Neither the name of the project nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 */ 61 62 /* 63 * ++Copyright++ 1983, 1987, 1989, 1993 64 * - 65 * Copyright (c) 1983, 1987, 1989, 1993 66 * The Regents of the University of California. All rights reserved. 67 * 68 * Redistribution and use in source and binary forms, with or without 69 * modification, are permitted provided that the following conditions 70 * are met: 71 * 1. Redistributions of source code must retain the above copyright 72 * notice, this list of conditions and the following disclaimer. 73 * 2. Redistributions in binary form must reproduce the above copyright 74 * notice, this list of conditions and the following disclaimer in the 75 * documentation and/or other materials provided with the distribution. 76 * 3. Neither the name of the University nor the names of its contributors 77 * may be used to endorse or promote products derived from this software 78 * without specific prior written permission. 79 * 80 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 81 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 82 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 83 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 84 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 85 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 86 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 87 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 88 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 89 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 90 * SUCH DAMAGE. 91 * - 92 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 93 * 94 * Permission to use, copy, modify, and distribute this software for any 95 * purpose with or without fee is hereby granted, provided that the above 96 * copyright notice and this permission notice appear in all copies, and that 97 * the name of Digital Equipment Corporation not be used in advertising or 98 * publicity pertaining to distribution of the document or software without 99 * specific, written prior permission. 100 * 101 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 102 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 103 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 104 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 105 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 106 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 107 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 108 * SOFTWARE. 109 * - 110 * --Copyright-- 111 */ 112 113 /* 114 * @(#)resolv.h 8.1 (Berkeley) 6/2/93 115 * $From: resolv.h,v 8.17 1996/11/26 10:11:20 vixie Exp $ 116 */ 117 118 #ifndef _RESOLV_H_ 119 #define _RESOLV_H_ 120 121 #include <sys/param.h> 122 #if (!defined(BSD)) || (BSD < 199306) 123 # include <sys/bitypes.h> 124 #else 125 # include <sys/types.h> 126 #endif 127 #include <sys/cdefs.h> 128 #include <sys/socket.h> 129 #include <stdio.h> 130 131 /* 132 * Revision information. This is the release date in YYYYMMDD format. 133 * It can change every day so the right thing to do with it is use it 134 * in preprocessor commands such as "#if (__RES > 19931104)". Do not 135 * compare for equality; rather, use it to determine whether your resolver 136 * is new enough to contain a certain feature. 137 */ 138 139 #define __RES 19960801 140 141 /* 142 * Resolver configuration file. 143 * Normally not present, but may contain the address of the 144 * initial name server(s) to query and the domain search list. 145 */ 146 147 #ifndef _PATH_RESCONF 148 #define _PATH_RESCONF "/etc/resolv.conf" 149 #endif 150 151 #include "dnsres.h" 152 153 /* 154 * Resolver options (keep these in synch with res_debug.c, please) 155 */ 156 #define RES_INIT 0x00000001 /* address initialized */ 157 #define RES_DEBUG 0x00000002 /* print debug messages */ 158 #define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/ 159 #define RES_USEVC 0x00000008 /* use virtual circuit */ 160 #define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */ 161 #define RES_IGNTC 0x00000020 /* ignore trucation errors */ 162 #define RES_RECURSE 0x00000040 /* recursion desired */ 163 #define RES_DEFNAMES 0x00000080 /* use default domain name */ 164 #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */ 165 #define RES_DNSRCH 0x00000200 /* search up local domain tree */ 166 #define RES_INSECURE1 0x00000400 /* type 1 security disabled */ 167 #define RES_INSECURE2 0x00000800 /* type 2 security disabled */ 168 #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */ 169 #define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */ 170 /* KAME extensions: use higher bit to avoid conflict with ISC use */ 171 #define RES_USE_EDNS0 0x40000000 /* use EDNS0 */ 172 /* DNSSEC extensions: use higher bit to avoid conflict with ISC use */ 173 #define RES_USE_DNSSEC 0x20000000 /* use DNSSEC using OK bit in OPT */ 174 175 #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) 176 177 /* 178 * Resolver "pfcode" values. Used by dig. 179 */ 180 #define RES_PRF_STATS 0x00000001 181 /* 0x00000002 */ 182 #define RES_PRF_CLASS 0x00000004 183 #define RES_PRF_CMD 0x00000008 184 #define RES_PRF_QUES 0x00000010 185 #define RES_PRF_ANS 0x00000020 186 #define RES_PRF_AUTH 0x00000040 187 #define RES_PRF_ADD 0x00000080 188 #define RES_PRF_HEAD1 0x00000100 189 #define RES_PRF_HEAD2 0x00000200 190 #define RES_PRF_TTLID 0x00000400 191 #define RES_PRF_HEADX 0x00000800 192 #define RES_PRF_QUERY 0x00001000 193 #define RES_PRF_REPLY 0x00002000 194 #define RES_PRF_INIT 0x00004000 195 /* 0x00008000 */ 196 197 /* hooks are still experimental as of 4.9.2 */ 198 typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } 199 res_sendhookact; 200 201 typedef res_sendhookact (*res_send_qhook)(struct sockaddr_in * const *ns, 202 const unsigned char **query, 203 int *querylen, 204 unsigned char *ans, 205 int anssiz, 206 int *resplen); 207 208 typedef res_sendhookact (*res_send_rhook)(const struct sockaddr_in *ns, 209 const unsigned char *query, 210 int querylen, 211 unsigned char *ans, 212 int anssiz, 213 int *resplen); 214 215 struct res_sym { 216 int number; /* Identifying number, like T_MX */ 217 char * name; /* Its symbolic name, like "MX" */ 218 char * humanname; /* Its fun name, like "mail exchanger" */ 219 }; 220 221 extern const struct res_sym __dnsres_p_class_syms[]; 222 extern const struct res_sym __dnsres_p_type_syms[]; 223 224 /* Private routines shared between libc/net, named, nslookup and others. */ 225 #define res_hnok __dnsres_res_hnok 226 #define res_ownok __dnsres_res_ownok 227 #define res_mailok __dnsres_res_mailok 228 #define res_dnok __dnsres_res_dnok 229 #define sym_ston __dnsres_sym_ston 230 #define sym_ntos __dnsres_sym_ntos 231 #define sym_ntop __dnsres_sym_ntop 232 #define b64_ntop __dnsres_b64_ntop 233 #define b64_pton __dnsres_b64_pton 234 #define loc_ntoa __dnsres_loc_ntoa 235 #define loc_aton __dnsres_loc_aton 236 #define dn_skipname __dnsres_dn_skipname 237 #define fp_resstat __dnsres_fp_resstat 238 #define fp_query __dnsres_fp_query 239 #define fp_nquery __dnsres_fp_nquery 240 #define hostalias __dnsres_hostalias 241 #define putlong __dnsres_putlong 242 #define putshort __dnsres_putshort 243 #define p_class __dnsres_p_class 244 #define p_time __dnsres_p_time 245 #define p_type __dnsres_p_type 246 #define p_query __dnsres_p_query 247 #define p_cdnname __dnsres_p_cdnname 248 #define p_cdname __dnsres_p_cdname 249 #define p_fqnname __dnsres_p_fqnname 250 #define p_fqname __dnsres_p_fqname 251 #define p_rr __dnsres_p_rr 252 #define p_option __dnsres_p_option 253 #define p_secstodate __dnsres_p_secstodate 254 #define dn_count_labels __dnsres_dn_count_labels 255 #define dn_comp __dnsres_dn_comp 256 #define res_randomid __dnsres_res_randomid 257 #define res_send __dnsres_res_send 258 #define res_isourserver __dnsres_res_isourserver 259 #define res_nameinquery __dnsres_res_nameinquery 260 #define res_queriesmatch __dnsres_res_queriesmatch 261 #define res_close __dnsres_res_close 262 #define res_opt __dnsres_res_opt 263 264 #define dn_expand __dnsres_dn_expand 265 #define res_init_socket __dnsres_res_init_socket 266 #define res_query __dnsres_res_query 267 #define res_search __dnsres_res_search 268 #define res_querydomain __dnsres_res_querydomain 269 #define res_mkquery __dnsres_res_mkquery 270 #define getshort __dnsres_getshort 271 #define getlong __dnsres_getlong 272 273 struct dnsres_cbstate; 274 struct dnsres_socket; 275 struct dnsres_target; 276 struct res_search_state; 277 278 __BEGIN_DECLS 279 int res_hnok(const char *); 280 int res_ownok(const char *); 281 int res_mailok(const char *); 282 int res_dnok(const char *); 283 int sym_ston(const struct res_sym *, char *, int *); 284 const char * sym_ntos(const struct res_sym *, int, int *); 285 const char * sym_ntop(const struct res_sym *, int, int *); 286 int b64_ntop(unsigned char const *, size_t, char *, size_t); 287 int b64_pton(char const *, unsigned char *, size_t); 288 int loc_aton(const char *, unsigned char *); 289 const char * loc_ntoa(const unsigned char *, char *); 290 int dn_skipname(const unsigned char *, 291 const unsigned char *); 292 void fp_resstat(struct dnsres *, FILE *); 293 void fp_query(struct dnsres *, 294 const unsigned char *, FILE *); 295 void fp_nquery(struct dnsres *, 296 const unsigned char *msg, int len, FILE *file); 297 const char * hostalias(struct dnsres *, const char *); 298 void putlong(u_int32_t, unsigned char *); 299 void putshort(u_int16_t, unsigned char *); 300 const char * p_class(int); 301 const char * p_time(u_int32_t); 302 const char * p_type(int); 303 void p_query(struct dnsres *, 304 const unsigned char *); 305 const unsigned char * p_cdnname(const unsigned char *, const unsigned char *, 306 int, FILE *); 307 const unsigned char * p_cdname(const unsigned char *, const unsigned char *, 308 FILE *); 309 const unsigned char * p_fqnname(const unsigned char *, const unsigned char *, 310 int, char *, int); 311 const unsigned char * p_fqname(const unsigned char *, const unsigned char *, 312 FILE *); 313 const unsigned char * p_rr(struct dnsres *, 314 const unsigned char *, const unsigned char *, 315 FILE *); 316 const char * p_option(unsigned long); 317 char * p_secstodate(unsigned long); 318 int dn_count_labels(char *); 319 int dn_comp(const char *, unsigned char *, int, 320 unsigned char **, unsigned char **); 321 int dn_expand(const unsigned char *, const unsigned char *, 322 const unsigned char *, char *, int); 323 int res_init(struct dnsres *); 324 void res_init_socket(struct dnsres_socket *); 325 unsigned int res_randomid(void); 326 void res_query(struct dnsres *, 327 const char *, struct dnsres_target *, 328 void (*)(int, void *), void *); 329 void res_search(struct dnsres *, 330 const char *, struct dnsres_target * , 331 void (*)(int, void *), void *); 332 void res_querydomain(struct dnsres *, 333 const char *, const char *, 334 struct dnsres_target *, 335 void (*)(int, void *), void *); 336 int res_mkquery(struct dnsres *, 337 int, const char *, int, int, 338 const unsigned char *, int, const unsigned char *, 339 unsigned char *, int); 340 void res_send(struct dnsres *, 341 const unsigned char *, int, unsigned char *, int, 342 void (*)(int, struct res_search_state *), 343 struct res_search_state *) 344 __attribute__((__bounded__(__string__,4,5))); 345 int res_isourserver(struct dnsres *, 346 const struct sockaddr_in *); 347 int res_nameinquery(const char *, int, int, 348 const unsigned char *, const unsigned char *); 349 int res_opt(struct dnsres *_resp, int, u_char *, int, int); 350 int res_queriesmatch(const unsigned char *, 351 const unsigned char *, const unsigned char *, 352 const unsigned char *); 353 void res_close(struct dnsres_socket *); 354 unsigned short getshort(const unsigned char *); 355 unsigned int getlong(const unsigned char *); 356 __END_DECLS 357 358 #ifndef HAVE_FGETLN 359 char *fgetln(FILE *, size_t *); 360 #endif 361 362 #ifndef HAVE_STRLCPY 363 size_t strlcpy(char *dst, const char *src, size_t size); 364 #endif 365 366 #ifndef ARC4RANDOM 367 u_int32_t arc4random(void); 368 #endif 369 370 #endif /* !_RESOLV_H_ */ 371