resolv.h revision 28982
11539Srgrimes/*- 21539Srgrimes * Copyright (c) 1983, 1987, 1989, 1993 31539Srgrimes * The Regents of the University of California. All rights reserved. 41539Srgrimes * 51539Srgrimes * Redistribution and use in source and binary forms, with or without 61539Srgrimes * modification, are permitted provided that the following conditions 71539Srgrimes * are met: 81539Srgrimes * 1. Redistributions of source code must retain the above copyright 91539Srgrimes * notice, this list of conditions and the following disclaimer. 101539Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111539Srgrimes * notice, this list of conditions and the following disclaimer in the 121539Srgrimes * documentation and/or other materials provided with the distribution. 131539Srgrimes * 3. All advertising materials mentioning features or use of this software 141539Srgrimes * must display the following acknowledgement: 151539Srgrimes * This product includes software developed by the University of 161539Srgrimes * California, Berkeley and its contributors. 171539Srgrimes * 4. Neither the name of the University nor the names of its contributors 181539Srgrimes * may be used to endorse or promote products derived from this software 191539Srgrimes * without specific prior written permission. 201539Srgrimes * 211539Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221539Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231539Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241539Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251539Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261539Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271539Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281539Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291539Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301539Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311539Srgrimes * SUCH DAMAGE. 321539Srgrimes * 331539Srgrimes * - 341539Srgrimes * Portions Copyright (c) 1993 by Digital Equipment Corporation. 358858Srgrimes * 361539Srgrimes * Permission to use, copy, modify, and distribute this software for any 371539Srgrimes * purpose with or without fee is hereby granted, provided that the above 381539Srgrimes * copyright notice and this permission notice appear in all copies, and that 391539Srgrimes * the name of Digital Equipment Corporation not be used in advertising or 401539Srgrimes * publicity pertaining to distribution of the document or software without 411539Srgrimes * specific, written prior permission. 428858Srgrimes * 431539Srgrimes * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 441539Srgrimes * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 451539Srgrimes * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 461539Srgrimes * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 471539Srgrimes * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 481539Srgrimes * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 491539Srgrimes * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 501539Srgrimes * SOFTWARE. 511539Srgrimes * - 521539Srgrimes * --Copyright-- 533070Spst * 543070Spst * @(#)resolv.h 8.1 (Berkeley) 6/2/93 5526975Speter * From Id: resolv.h,v 8.18 1997/06/01 20:34:32 vixie Exp 5628982Sbrian * $Id: resolv.h,v 1.13 1997/06/27 08:32:38 peter Exp $ 571539Srgrimes */ 581539Srgrimes 591539Srgrimes#ifndef _RESOLV_H_ 601539Srgrimes#define _RESOLV_H_ 611539Srgrimes 623070Spst#include <sys/param.h> 631539Srgrimes#include <sys/types.h> 643070Spst#include <sys/cdefs.h> 653070Spst#include <stdio.h> 663070Spst 671539Srgrimes/* 6821055Speter * Revision information. This is the release date in YYYYMMDD format. 6921055Speter * It can change every day so the right thing to do with it is use it 7021055Speter * in preprocessor commands such as "#if (__RES > 19931104)". Do not 713070Spst * compare for equality; rather, use it to determine whether your resolver 723070Spst * is new enough to contain a certain feature. 733070Spst */ 743070Spst 7521055Speter#define __RES 19960801 763070Spst 773070Spst/* 781539Srgrimes * Resolver configuration file. 791539Srgrimes * Normally not present, but may contain the address of the 801539Srgrimes * inital name server(s) to query and the domain search list. 811539Srgrimes */ 821539Srgrimes 831539Srgrimes#ifndef _PATH_RESCONF 843070Spst#define _PATH_RESCONF "/etc/resolv.conf" 851539Srgrimes#endif 861539Srgrimes 871539Srgrimes/* 881539Srgrimes * Global defines and variables for resolver stub. 891539Srgrimes */ 901539Srgrimes#define MAXNS 3 /* max # name servers we'll track */ 911539Srgrimes#define MAXDFLSRCH 3 /* # default domain levels to try */ 921539Srgrimes#define MAXDNSRCH 6 /* max # domains in search path */ 931539Srgrimes#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ 941539Srgrimes 951539Srgrimes#define RES_TIMEOUT 5 /* min. seconds between retries */ 963070Spst#define MAXRESOLVSORT 10 /* number of net to sort on */ 973070Spst#define RES_MAXNDOTS 15 /* should reflect bit field size */ 981539Srgrimes 991539Srgrimesstruct __res_state { 1001539Srgrimes int retrans; /* retransmition time interval */ 1011539Srgrimes int retry; /* number of times to retransmit */ 1023070Spst u_long options; /* option flags - see below. */ 1031539Srgrimes int nscount; /* number of name servers */ 1043070Spst struct sockaddr_in 1053070Spst nsaddr_list[MAXNS]; /* address of name server */ 1061539Srgrimes#define nsaddr nsaddr_list[0] /* for backward compatibility */ 10721055Speter u_short id; /* current message id */ 1081539Srgrimes char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ 10921055Speter char defdname[256]; /* default domain (deprecated) */ 1103070Spst u_long pfcode; /* RES_PRF_ flags - see below. */ 1113070Spst unsigned ndots:4; /* threshold for initial abs. query */ 1123070Spst unsigned nsort:4; /* number of elements in sort_list[] */ 1133070Spst char unused[3]; 1143070Spst struct { 1153070Spst struct in_addr addr; 1163070Spst u_int32_t mask; 1173070Spst } sort_list[MAXRESOLVSORT]; 11821055Speter char pad[72]; /* on an i386 this means 512b total */ 1191539Srgrimes}; 1201539Srgrimes 1211539Srgrimes/* 1221539Srgrimes * Resolver options (keep these in synch with res_debug.c, please) 1231539Srgrimes */ 12410132Speter#define RES_INIT 0x00000001 /* address initialized */ 12510132Speter#define RES_DEBUG 0x00000002 /* print debug messages */ 12610132Speter#define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/ 12710132Speter#define RES_USEVC 0x00000008 /* use virtual circuit */ 12810132Speter#define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */ 12913771Smpp#define RES_IGNTC 0x00000020 /* ignore truncation errors */ 13010132Speter#define RES_RECURSE 0x00000040 /* recursion desired */ 13110132Speter#define RES_DEFNAMES 0x00000080 /* use default domain name */ 13210132Speter#define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */ 13310132Speter#define RES_DNSRCH 0x00000200 /* search up local domain tree */ 1343070Spst#define RES_INSECURE1 0x00000400 /* type 1 security disabled */ 1353070Spst#define RES_INSECURE2 0x00000800 /* type 2 security disabled */ 13610132Speter#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */ 13717902Speter#define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */ 13828982Sbrian#define RES_NOTLDQUERY 0x00004000 /* Don't query TLD names */ 1391539Srgrimes 14010132Speter#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) 1411539Srgrimes 1421539Srgrimes/* 1431539Srgrimes * Resolver "pfcode" values. Used by dig. 1441539Srgrimes */ 1453070Spst#define RES_PRF_STATS 0x00000001 1463070Spst/* 0x00000002 */ 1473070Spst#define RES_PRF_CLASS 0x00000004 1483070Spst#define RES_PRF_CMD 0x00000008 1493070Spst#define RES_PRF_QUES 0x00000010 1503070Spst#define RES_PRF_ANS 0x00000020 1513070Spst#define RES_PRF_AUTH 0x00000040 1523070Spst#define RES_PRF_ADD 0x00000080 1533070Spst#define RES_PRF_HEAD1 0x00000100 1543070Spst#define RES_PRF_HEAD2 0x00000200 1553070Spst#define RES_PRF_TTLID 0x00000400 1563070Spst#define RES_PRF_HEADX 0x00000800 1573070Spst#define RES_PRF_QUERY 0x00001000 1583070Spst#define RES_PRF_REPLY 0x00002000 1593070Spst#define RES_PRF_INIT 0x00004000 1603070Spst/* 0x00008000 */ 1611539Srgrimes 1623070Spst/* hooks are still experimental as of 4.9.2 */ 1633070Spsttypedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } 1643070Spst res_sendhookact; 1651539Srgrimes 1663070Spsttypedef res_sendhookact (*res_send_qhook)__P((struct sockaddr_in * const *ns, 1673070Spst const u_char **query, 1683070Spst int *querylen, 1693070Spst u_char *ans, 1703070Spst int anssiz, 1713070Spst int *resplen)); 1723070Spst 1733070Spsttypedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr_in *ns, 1743070Spst const u_char *query, 1753070Spst int querylen, 1763070Spst u_char *ans, 1773070Spst int anssiz, 1783070Spst int *resplen)); 1793070Spst 18021055Speterstruct res_sym { 18121055Speter int number; /* Identifying number, like T_MX */ 18221055Speter char * name; /* Its symbolic name, like "MX" */ 18321055Speter char * humanname; /* Its fun name, like "mail exchanger" */ 18421055Speter}; 18521055Speter 1861539Srgrimesextern struct __res_state _res; 18721055Speterextern const struct res_sym __p_class_syms[]; 18821055Speterextern const struct res_sym __p_type_syms[]; 1891539Srgrimes 1901539Srgrimes/* Private routines shared between libc/net, named, nslookup and others. */ 19117902Speter#define res_hnok __res_hnok 19217902Speter#define res_ownok __res_ownok 19317902Speter#define res_mailok __res_mailok 19417902Speter#define res_dnok __res_dnok 19521055Speter#define sym_ston __sym_ston 19621055Speter#define sym_ntos __sym_ntos 19721055Speter#define sym_ntop __sym_ntop 19821055Speter#define b64_ntop __b64_ntop 19921055Speter#define b64_pton __b64_pton 20017902Speter#define loc_ntoa __loc_ntoa 20117902Speter#define loc_aton __loc_aton 2021539Srgrimes#define dn_skipname __dn_skipname 20321055Speter#define fp_resstat __fp_resstat 2041539Srgrimes#define fp_query __fp_query 2053070Spst#define fp_nquery __fp_nquery 2061539Srgrimes#define hostalias __hostalias 2071539Srgrimes#define putlong __putlong 2081539Srgrimes#define putshort __putshort 2093070Spst#define p_class __p_class 2103070Spst#define p_time __p_time 2113070Spst#define p_type __p_type 21221055Speter#define p_query __p_query 2133070Spst#define p_cdnname __p_cdnname 2143070Spst#define p_cdname __p_cdname 21521055Speter#define p_fqnname __p_fqnname 2163070Spst#define p_fqname __p_fqname 2173070Spst#define p_rr __p_rr 2183070Spst#define p_option __p_option 21921055Speter#define p_secstodate __p_secstodate 22021055Speter#define dn_count_labels __dn_count_labels 22121055Speter#define dn_comp __dn_comp 22210132Speter#define res_randomid __res_randomid 22310132Speter#define res_isourserver __res_isourserver 22410132Speter#define res_nameinquery __res_nameinquery 22510132Speter#define res_queriesmatch __res_queriesmatch 22621055Speter#define res_close __res_close 2273070Spst 22821055Speter#ifdef BIND_RES_POSIX3 22921055Speter#define dn_expand __dn_expand 23021055Speter#define res_init __res_init 23121055Speter#define res_query __res_query 23221055Speter#define res_search __res_search 23321055Speter#define res_querydomain __res_querydomain 23421055Speter#define res_mkquery __res_mkquery 23526975Speter#define res_send __res_send 23621055Speter#endif 23721055Speter 2381539Srgrimes__BEGIN_DECLS 23921055Speterint res_hnok __P((const char *)); 24021055Speterint res_ownok __P((const char *)); 24121055Speterint res_mailok __P((const char *)); 24221055Speterint res_dnok __P((const char *)); 24321055Speterint sym_ston __P((const struct res_sym *, char *, int *)); 24421055Speterconst char * sym_ntos __P((const struct res_sym *, int, int *)); 24521055Speterconst char * sym_ntop __P((const struct res_sym *, int, int *)); 24621055Speterint b64_ntop __P((u_char const *, size_t, char *, size_t)); 24721055Speterint b64_pton __P((char const *, u_char *, size_t)); 24821055Speterint loc_aton __P((const char *, u_char *)); 24921055Speterconst char * loc_ntoa __P((const u_char *, char *)); 25021055Speterint dn_skipname __P((const u_char *, const u_char *)); 25121055Spetervoid fp_resstat __P((struct __res_state *, FILE *)); 25221055Spetervoid fp_query __P((const u_char *, FILE *)); 25321055Spetervoid fp_nquery __P((const u_char *, int, FILE *)); 25421055Speterconst char * hostalias __P((const char *)); 25521055Spetervoid putlong __P((u_int32_t, u_char *)); 25621055Spetervoid putshort __P((u_int16_t, u_char *)); 25721055Speterconst char * p_class __P((int)); 25821055Speterconst char * p_time __P((u_int32_t)); 25921055Speterconst char * p_type __P((int)); 26021055Spetervoid p_query __P((const u_char *)); 26121055Speterconst u_char * p_cdnname __P((const u_char *, const u_char *, int, FILE *)); 26221055Speterconst u_char * p_cdname __P((const u_char *, const u_char *, FILE *)); 26321055Speterconst u_char * p_fqnname __P((const u_char *, const u_char *, 26421055Speter int, char *, int)); 26521055Speterconst u_char * p_fqname __P((const u_char *, const u_char *, FILE *)); 26621055Speterconst u_char * p_rr __P((const u_char *, const u_char *, FILE *)); 26721055Speterconst char * p_option __P((u_long)); 26821055Speterchar * p_secstodate __P((u_long)); 26921055Speterint dn_count_labels __P((char *)); 27021055Speterint dn_comp __P((const char *, u_char *, int, 27121055Speter u_char **, u_char **)); 27221055Speterint dn_expand __P((const u_char *, const u_char *, const u_char *, 27321055Speter char *, int)); 27421055Speterint res_init __P((void)); 27521055Speteru_int res_randomid __P((void)); 27621055Speterint res_query __P((const char *, int, int, u_char *, int)); 27721055Speterint res_search __P((const char *, int, int, u_char *, int)); 27821055Speterint res_querydomain __P((const char *, const char *, int, int, 27921055Speter u_char *, int)); 28021055Speterint res_mkquery __P((int, const char *, int, int, const u_char *, 28121055Speter int, const u_char *, u_char *, int)); 28221055Speterint res_send __P((const u_char *, int, u_char *, int)); 28321055Speterint res_isourserver __P((const struct sockaddr_in *)); 28421055Speterint res_nameinquery __P((const char *, int, int, 28521055Speter const u_char *, const u_char *)); 28621055Speterint res_queriesmatch __P((const u_char *, const u_char *, 28721055Speter const u_char *, const u_char *)); 28821055Spetervoid res_close __P((void)); 2891539Srgrimes__END_DECLS 2901539Srgrimes 2911539Srgrimes#endif /* !_RESOLV_H_ */ 292