159deaec5SRodney W. Grimes /*- 259deaec5SRodney W. Grimes * Copyright (c) 1983, 1987, 1989, 1993 359deaec5SRodney W. Grimes * The Regents of the University of California. All rights reserved. 459deaec5SRodney W. Grimes * 559deaec5SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 659deaec5SRodney W. Grimes * modification, are permitted provided that the following conditions 759deaec5SRodney W. Grimes * are met: 859deaec5SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 959deaec5SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 1059deaec5SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 1159deaec5SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 1259deaec5SRodney W. Grimes * documentation and/or other materials provided with the distribution. 1359deaec5SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 1459deaec5SRodney W. Grimes * must display the following acknowledgement: 1559deaec5SRodney W. Grimes * This product includes software developed by the University of 1659deaec5SRodney W. Grimes * California, Berkeley and its contributors. 1759deaec5SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 1859deaec5SRodney W. Grimes * may be used to endorse or promote products derived from this software 1959deaec5SRodney W. Grimes * without specific prior written permission. 2059deaec5SRodney W. Grimes * 2159deaec5SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2259deaec5SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2359deaec5SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2459deaec5SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2559deaec5SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2659deaec5SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2759deaec5SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2859deaec5SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2959deaec5SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3059deaec5SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3159deaec5SRodney W. Grimes * SUCH DAMAGE. 3259deaec5SRodney W. Grimes * 3359deaec5SRodney W. Grimes * - 3459deaec5SRodney W. Grimes * Portions Copyright (c) 1993 by Digital Equipment Corporation. 3559deaec5SRodney W. Grimes * 3659deaec5SRodney W. Grimes * Permission to use, copy, modify, and distribute this software for any 3759deaec5SRodney W. Grimes * purpose with or without fee is hereby granted, provided that the above 3859deaec5SRodney W. Grimes * copyright notice and this permission notice appear in all copies, and that 3959deaec5SRodney W. Grimes * the name of Digital Equipment Corporation not be used in advertising or 4059deaec5SRodney W. Grimes * publicity pertaining to distribution of the document or software without 4159deaec5SRodney W. Grimes * specific, written prior permission. 4259deaec5SRodney W. Grimes * 4359deaec5SRodney W. Grimes * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 4459deaec5SRodney W. Grimes * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 4559deaec5SRodney W. Grimes * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 4659deaec5SRodney W. Grimes * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 4759deaec5SRodney W. Grimes * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 4859deaec5SRodney W. Grimes * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 4959deaec5SRodney W. Grimes * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 5059deaec5SRodney W. Grimes * SOFTWARE. 5159deaec5SRodney W. Grimes * - 5259deaec5SRodney W. Grimes * --Copyright-- 531363f04cSPaul Traina * 541363f04cSPaul Traina * @(#)resolv.h 8.1 (Berkeley) 6/2/93 55315d6d9cSPeter Wemm * From Id: resolv.h,v 8.17 1996/11/26 10:11:20 vixie Exp 56315d6d9cSPeter Wemm * $Id: resolv.h,v 1.7 1996/08/29 20:00:58 peter Exp $ 5759deaec5SRodney W. Grimes */ 5859deaec5SRodney W. Grimes 5959deaec5SRodney W. Grimes #ifndef _RESOLV_H_ 6059deaec5SRodney W. Grimes #define _RESOLV_H_ 6159deaec5SRodney W. Grimes 621363f04cSPaul Traina #include <sys/param.h> 6359deaec5SRodney W. Grimes #include <sys/types.h> 641363f04cSPaul Traina #include <sys/cdefs.h> 651363f04cSPaul Traina #include <stdio.h> 661363f04cSPaul Traina 671363f04cSPaul Traina /* 68315d6d9cSPeter Wemm * Revision information. This is the release date in YYYYMMDD format. 69315d6d9cSPeter Wemm * It can change every day so the right thing to do with it is use it 70315d6d9cSPeter Wemm * in preprocessor commands such as "#if (__RES > 19931104)". Do not 711363f04cSPaul Traina * compare for equality; rather, use it to determine whether your resolver 721363f04cSPaul Traina * is new enough to contain a certain feature. 731363f04cSPaul Traina */ 741363f04cSPaul Traina 75315d6d9cSPeter Wemm #define __RES 19960801 761363f04cSPaul Traina 7759deaec5SRodney W. Grimes /* 7859deaec5SRodney W. Grimes * Resolver configuration file. 7959deaec5SRodney W. Grimes * Normally not present, but may contain the address of the 8059deaec5SRodney W. Grimes * inital name server(s) to query and the domain search list. 8159deaec5SRodney W. Grimes */ 8259deaec5SRodney W. Grimes 8359deaec5SRodney W. Grimes #ifndef _PATH_RESCONF 8459deaec5SRodney W. Grimes #define _PATH_RESCONF "/etc/resolv.conf" 8559deaec5SRodney W. Grimes #endif 8659deaec5SRodney W. Grimes 8759deaec5SRodney W. Grimes /* 8859deaec5SRodney W. Grimes * Global defines and variables for resolver stub. 8959deaec5SRodney W. Grimes */ 9059deaec5SRodney W. Grimes #define MAXNS 3 /* max # name servers we'll track */ 9159deaec5SRodney W. Grimes #define MAXDFLSRCH 3 /* # default domain levels to try */ 9259deaec5SRodney W. Grimes #define MAXDNSRCH 6 /* max # domains in search path */ 9359deaec5SRodney W. Grimes #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ 9459deaec5SRodney W. Grimes 9559deaec5SRodney W. Grimes #define RES_TIMEOUT 5 /* min. seconds between retries */ 961363f04cSPaul Traina #define MAXRESOLVSORT 10 /* number of net to sort on */ 971363f04cSPaul Traina #define RES_MAXNDOTS 15 /* should reflect bit field size */ 9859deaec5SRodney W. Grimes 9959deaec5SRodney W. Grimes struct __res_state { 10059deaec5SRodney W. Grimes int retrans; /* retransmition time interval */ 10159deaec5SRodney W. Grimes int retry; /* number of times to retransmit */ 1021363f04cSPaul Traina u_long options; /* option flags - see below. */ 10359deaec5SRodney W. Grimes int nscount; /* number of name servers */ 1041363f04cSPaul Traina struct sockaddr_in 1051363f04cSPaul Traina nsaddr_list[MAXNS]; /* address of name server */ 10659deaec5SRodney W. Grimes #define nsaddr nsaddr_list[0] /* for backward compatibility */ 107315d6d9cSPeter Wemm u_short id; /* current message id */ 10859deaec5SRodney W. Grimes char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ 109315d6d9cSPeter Wemm char defdname[256]; /* default domain (deprecated) */ 1101363f04cSPaul Traina u_long pfcode; /* RES_PRF_ flags - see below. */ 1111363f04cSPaul Traina unsigned ndots:4; /* threshold for initial abs. query */ 1121363f04cSPaul Traina unsigned nsort:4; /* number of elements in sort_list[] */ 1131363f04cSPaul Traina char unused[3]; 1141363f04cSPaul Traina struct { 1151363f04cSPaul Traina struct in_addr addr; 1161363f04cSPaul Traina u_int32_t mask; 1171363f04cSPaul Traina } sort_list[MAXRESOLVSORT]; 118315d6d9cSPeter Wemm char pad[72]; /* on an i386 this means 512b total */ 11959deaec5SRodney W. Grimes }; 12059deaec5SRodney W. Grimes 12159deaec5SRodney W. Grimes /* 12259deaec5SRodney W. Grimes * Resolver options (keep these in synch with res_debug.c, please) 12359deaec5SRodney W. Grimes */ 1241363f04cSPaul Traina #define RES_INIT 0x00000001 /* address initialized */ 1251363f04cSPaul Traina #define RES_DEBUG 0x00000002 /* print debug messages */ 126d58a9efdSPeter Wemm #define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/ 1271363f04cSPaul Traina #define RES_USEVC 0x00000008 /* use virtual circuit */ 128d58a9efdSPeter Wemm #define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */ 12971d9c781SMike Pritchard #define RES_IGNTC 0x00000020 /* ignore truncation errors */ 1301363f04cSPaul Traina #define RES_RECURSE 0x00000040 /* recursion desired */ 1311363f04cSPaul Traina #define RES_DEFNAMES 0x00000080 /* use default domain name */ 1321363f04cSPaul Traina #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */ 1331363f04cSPaul Traina #define RES_DNSRCH 0x00000200 /* search up local domain tree */ 1341363f04cSPaul Traina #define RES_INSECURE1 0x00000400 /* type 1 security disabled */ 1351363f04cSPaul Traina #define RES_INSECURE2 0x00000800 /* type 2 security disabled */ 136d58a9efdSPeter Wemm #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */ 13774b3fad6SPeter Wemm #define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */ 13859deaec5SRodney W. Grimes 13959deaec5SRodney W. Grimes #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) 14059deaec5SRodney W. Grimes 14159deaec5SRodney W. Grimes /* 14259deaec5SRodney W. Grimes * Resolver "pfcode" values. Used by dig. 14359deaec5SRodney W. Grimes */ 1441363f04cSPaul Traina #define RES_PRF_STATS 0x00000001 1451363f04cSPaul Traina /* 0x00000002 */ 1461363f04cSPaul Traina #define RES_PRF_CLASS 0x00000004 1471363f04cSPaul Traina #define RES_PRF_CMD 0x00000008 1481363f04cSPaul Traina #define RES_PRF_QUES 0x00000010 1491363f04cSPaul Traina #define RES_PRF_ANS 0x00000020 1501363f04cSPaul Traina #define RES_PRF_AUTH 0x00000040 1511363f04cSPaul Traina #define RES_PRF_ADD 0x00000080 1521363f04cSPaul Traina #define RES_PRF_HEAD1 0x00000100 1531363f04cSPaul Traina #define RES_PRF_HEAD2 0x00000200 1541363f04cSPaul Traina #define RES_PRF_TTLID 0x00000400 1551363f04cSPaul Traina #define RES_PRF_HEADX 0x00000800 1561363f04cSPaul Traina #define RES_PRF_QUERY 0x00001000 1571363f04cSPaul Traina #define RES_PRF_REPLY 0x00002000 1581363f04cSPaul Traina #define RES_PRF_INIT 0x00004000 1591363f04cSPaul Traina /* 0x00008000 */ 16059deaec5SRodney W. Grimes 1611363f04cSPaul Traina /* hooks are still experimental as of 4.9.2 */ 1621363f04cSPaul Traina typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } 1631363f04cSPaul Traina res_sendhookact; 1641363f04cSPaul Traina 1651363f04cSPaul Traina typedef res_sendhookact (*res_send_qhook)__P((struct sockaddr_in * const *ns, 1661363f04cSPaul Traina const u_char **query, 1671363f04cSPaul Traina int *querylen, 1681363f04cSPaul Traina u_char *ans, 1691363f04cSPaul Traina int anssiz, 1701363f04cSPaul Traina int *resplen)); 1711363f04cSPaul Traina 1721363f04cSPaul Traina typedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr_in *ns, 1731363f04cSPaul Traina const u_char *query, 1741363f04cSPaul Traina int querylen, 1751363f04cSPaul Traina u_char *ans, 1761363f04cSPaul Traina int anssiz, 1771363f04cSPaul Traina int *resplen)); 17859deaec5SRodney W. Grimes 179315d6d9cSPeter Wemm struct res_sym { 180315d6d9cSPeter Wemm int number; /* Identifying number, like T_MX */ 181315d6d9cSPeter Wemm char * name; /* Its symbolic name, like "MX" */ 182315d6d9cSPeter Wemm char * humanname; /* Its fun name, like "mail exchanger" */ 183315d6d9cSPeter Wemm }; 184315d6d9cSPeter Wemm 18559deaec5SRodney W. Grimes extern struct __res_state _res; 186315d6d9cSPeter Wemm extern const struct res_sym __p_class_syms[]; 187315d6d9cSPeter Wemm extern const struct res_sym __p_type_syms[]; 18859deaec5SRodney W. Grimes 18959deaec5SRodney W. Grimes /* Private routines shared between libc/net, named, nslookup and others. */ 19074b3fad6SPeter Wemm #define res_hnok __res_hnok 19174b3fad6SPeter Wemm #define res_ownok __res_ownok 19274b3fad6SPeter Wemm #define res_mailok __res_mailok 19374b3fad6SPeter Wemm #define res_dnok __res_dnok 194315d6d9cSPeter Wemm #define sym_ston __sym_ston 195315d6d9cSPeter Wemm #define sym_ntos __sym_ntos 196315d6d9cSPeter Wemm #define sym_ntop __sym_ntop 197315d6d9cSPeter Wemm #define b64_ntop __b64_ntop 198315d6d9cSPeter Wemm #define b64_pton __b64_pton 19974b3fad6SPeter Wemm #define loc_ntoa __loc_ntoa 20074b3fad6SPeter Wemm #define loc_aton __loc_aton 20159deaec5SRodney W. Grimes #define dn_skipname __dn_skipname 202315d6d9cSPeter Wemm #define fp_resstat __fp_resstat 20359deaec5SRodney W. Grimes #define fp_query __fp_query 2041363f04cSPaul Traina #define fp_nquery __fp_nquery 20559deaec5SRodney W. Grimes #define hostalias __hostalias 20659deaec5SRodney W. Grimes #define putlong __putlong 20759deaec5SRodney W. Grimes #define putshort __putshort 20859deaec5SRodney W. Grimes #define p_class __p_class 20959deaec5SRodney W. Grimes #define p_time __p_time 21059deaec5SRodney W. Grimes #define p_type __p_type 211315d6d9cSPeter Wemm #define p_query __p_query 2121363f04cSPaul Traina #define p_cdnname __p_cdnname 2131363f04cSPaul Traina #define p_cdname __p_cdname 214315d6d9cSPeter Wemm #define p_fqnname __p_fqnname 2151363f04cSPaul Traina #define p_fqname __p_fqname 2161363f04cSPaul Traina #define p_rr __p_rr 2171363f04cSPaul Traina #define p_option __p_option 218315d6d9cSPeter Wemm #define p_secstodate __p_secstodate 219315d6d9cSPeter Wemm #define dn_count_labels __dn_count_labels 220315d6d9cSPeter Wemm #define dn_comp __dn_comp 221d58a9efdSPeter Wemm #define res_randomid __res_randomid 222315d6d9cSPeter Wemm #define res_send __res_send 223d58a9efdSPeter Wemm #define res_isourserver __res_isourserver 224d58a9efdSPeter Wemm #define res_nameinquery __res_nameinquery 225d58a9efdSPeter Wemm #define res_queriesmatch __res_queriesmatch 226315d6d9cSPeter Wemm #define res_close __res_close 227315d6d9cSPeter Wemm 228315d6d9cSPeter Wemm #ifdef BIND_RES_POSIX3 229315d6d9cSPeter Wemm #define dn_expand __dn_expand 230315d6d9cSPeter Wemm #define res_init __res_init 231315d6d9cSPeter Wemm #define res_query __res_query 232315d6d9cSPeter Wemm #define res_search __res_search 233315d6d9cSPeter Wemm #define res_querydomain __res_querydomain 234315d6d9cSPeter Wemm #define res_mkquery __res_mkquery 235315d6d9cSPeter Wemm #endif 2361363f04cSPaul Traina 23759deaec5SRodney W. Grimes __BEGIN_DECLS 238315d6d9cSPeter Wemm int res_hnok __P((const char *)); 239315d6d9cSPeter Wemm int res_ownok __P((const char *)); 240315d6d9cSPeter Wemm int res_mailok __P((const char *)); 241315d6d9cSPeter Wemm int res_dnok __P((const char *)); 242315d6d9cSPeter Wemm int sym_ston __P((const struct res_sym *, char *, int *)); 243315d6d9cSPeter Wemm const char * sym_ntos __P((const struct res_sym *, int, int *)); 244315d6d9cSPeter Wemm const char * sym_ntop __P((const struct res_sym *, int, int *)); 245315d6d9cSPeter Wemm int b64_ntop __P((u_char const *, size_t, char *, size_t)); 246315d6d9cSPeter Wemm int b64_pton __P((char const *, u_char *, size_t)); 247315d6d9cSPeter Wemm int loc_aton __P((const char *, u_char *)); 248315d6d9cSPeter Wemm const char * loc_ntoa __P((const u_char *, char *)); 249315d6d9cSPeter Wemm int dn_skipname __P((const u_char *, const u_char *)); 250315d6d9cSPeter Wemm void fp_resstat __P((struct __res_state *, FILE *)); 251315d6d9cSPeter Wemm void fp_query __P((const u_char *, FILE *)); 252315d6d9cSPeter Wemm void fp_nquery __P((const u_char *, int, FILE *)); 253315d6d9cSPeter Wemm const char * hostalias __P((const char *)); 254315d6d9cSPeter Wemm void putlong __P((u_int32_t, u_char *)); 255315d6d9cSPeter Wemm void putshort __P((u_int16_t, u_char *)); 256315d6d9cSPeter Wemm const char * p_class __P((int)); 257315d6d9cSPeter Wemm const char * p_time __P((u_int32_t)); 258315d6d9cSPeter Wemm const char * p_type __P((int)); 259315d6d9cSPeter Wemm void p_query __P((const u_char *)); 260315d6d9cSPeter Wemm const u_char * p_cdnname __P((const u_char *, const u_char *, int, FILE *)); 261315d6d9cSPeter Wemm const u_char * p_cdname __P((const u_char *, const u_char *, FILE *)); 262315d6d9cSPeter Wemm const u_char * p_fqnname __P((const u_char *, const u_char *, 263315d6d9cSPeter Wemm int, char *, int)); 264315d6d9cSPeter Wemm const u_char * p_fqname __P((const u_char *, const u_char *, FILE *)); 265315d6d9cSPeter Wemm const u_char * p_rr __P((const u_char *, const u_char *, FILE *)); 266315d6d9cSPeter Wemm const char * p_option __P((u_long)); 267315d6d9cSPeter Wemm char * p_secstodate __P((u_long)); 268315d6d9cSPeter Wemm int dn_count_labels __P((char *)); 269315d6d9cSPeter Wemm int dn_comp __P((const char *, u_char *, int, 270315d6d9cSPeter Wemm u_char **, u_char **)); 27159deaec5SRodney W. Grimes int dn_expand __P((const u_char *, const u_char *, const u_char *, 2721363f04cSPaul Traina char *, int)); 27359deaec5SRodney W. Grimes int res_init __P((void)); 274315d6d9cSPeter Wemm u_int res_randomid __P((void)); 2751363f04cSPaul Traina int res_query __P((const char *, int, int, u_char *, int)); 2761363f04cSPaul Traina int res_search __P((const char *, int, int, u_char *, int)); 2771363f04cSPaul Traina int res_querydomain __P((const char *, const char *, int, int, 2781363f04cSPaul Traina u_char *, int)); 279315d6d9cSPeter Wemm int res_mkquery __P((int, const char *, int, int, const u_char *, 280315d6d9cSPeter Wemm int, const u_char *, u_char *, int)); 2811363f04cSPaul Traina int res_send __P((const u_char *, int, u_char *, int)); 282d58a9efdSPeter Wemm int res_isourserver __P((const struct sockaddr_in *)); 283d58a9efdSPeter Wemm int res_nameinquery __P((const char *, int, int, 284d58a9efdSPeter Wemm const u_char *, const u_char *)); 285d58a9efdSPeter Wemm int res_queriesmatch __P((const u_char *, const u_char *, 286d58a9efdSPeter Wemm const u_char *, const u_char *)); 287315d6d9cSPeter Wemm void res_close __P((void)); 28859deaec5SRodney W. Grimes __END_DECLS 28959deaec5SRodney W. Grimes 29059deaec5SRodney W. Grimes #endif /* !_RESOLV_H_ */ 291