resolv.h revision 36898
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. 3236888Speter */ 3336888Speter 3436888Speter/* 3536888Speter * Portions Copyright (c) 1996 by Internet Software Consortium. 361539Srgrimes * 371539Srgrimes * Permission to use, copy, modify, and distribute this software for any 381539Srgrimes * purpose with or without fee is hereby granted, provided that the above 3936888Speter * copyright notice and this permission notice appear in all copies. 408858Srgrimes * 4136888Speter * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS 4236888Speter * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES 4336888Speter * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE 4436888Speter * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 451539Srgrimes * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 461539Srgrimes * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 471539Srgrimes * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 481539Srgrimes * SOFTWARE. 4936888Speter */ 5036888Speter 5136888Speter/* 523070Spst * @(#)resolv.h 8.1 (Berkeley) 6/2/93 5336888Speter * From Id: resolv.h,v 8.12 1998/04/28 19:36:46 halley Exp $ 5436898Speter * $Id: resolv.h,v 1.15 1998/06/11 08:55:13 peter Exp $ 551539Srgrimes */ 561539Srgrimes 571539Srgrimes#ifndef _RESOLV_H_ 581539Srgrimes#define _RESOLV_H_ 591539Srgrimes 603070Spst#include <sys/param.h> 611539Srgrimes#include <sys/types.h> 623070Spst#include <sys/cdefs.h> 633070Spst#include <stdio.h> 643070Spst 651539Srgrimes/* 6621055Speter * Revision information. This is the release date in YYYYMMDD format. 6721055Speter * It can change every day so the right thing to do with it is use it 6821055Speter * in preprocessor commands such as "#if (__RES > 19931104)". Do not 693070Spst * compare for equality; rather, use it to determine whether your resolver 703070Spst * is new enough to contain a certain feature. 713070Spst */ 723070Spst 7321055Speter#define __RES 19960801 743070Spst 753070Spst/* 7636888Speter * This used to be defined in res_query.c, now it's in herror.c. It was 7736888Speter * never extern'd by any *.h file before it was placed here. herror.c is 7836888Speter * part of libresolv.a even though it might make more sense in libnetdb.a 7936888Speter * or even libnet.a. 8036888Speter */ 8136888Speter 8236888Speterextern int h_errno; 8336888Speter 8436888Speter/* 851539Srgrimes * Resolver configuration file. 861539Srgrimes * Normally not present, but may contain the address of the 871539Srgrimes * inital name server(s) to query and the domain search list. 881539Srgrimes */ 891539Srgrimes 901539Srgrimes#ifndef _PATH_RESCONF 913070Spst#define _PATH_RESCONF "/etc/resolv.conf" 921539Srgrimes#endif 931539Srgrimes 941539Srgrimes/* 951539Srgrimes * Global defines and variables for resolver stub. 961539Srgrimes */ 971539Srgrimes#define MAXNS 3 /* max # name servers we'll track */ 981539Srgrimes#define MAXDFLSRCH 3 /* # default domain levels to try */ 991539Srgrimes#define MAXDNSRCH 6 /* max # domains in search path */ 1001539Srgrimes#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ 1011539Srgrimes 1021539Srgrimes#define RES_TIMEOUT 5 /* min. seconds between retries */ 1033070Spst#define MAXRESOLVSORT 10 /* number of net to sort on */ 1043070Spst#define RES_MAXNDOTS 15 /* should reflect bit field size */ 1051539Srgrimes 1061539Srgrimesstruct __res_state { 1071539Srgrimes int retrans; /* retransmition time interval */ 1081539Srgrimes int retry; /* number of times to retransmit */ 1093070Spst u_long options; /* option flags - see below. */ 1101539Srgrimes int nscount; /* number of name servers */ 1113070Spst struct sockaddr_in 1123070Spst nsaddr_list[MAXNS]; /* address of name server */ 1131539Srgrimes#define nsaddr nsaddr_list[0] /* for backward compatibility */ 11421055Speter u_short id; /* current message id */ 1151539Srgrimes char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ 11621055Speter char defdname[256]; /* default domain (deprecated) */ 1173070Spst u_long pfcode; /* RES_PRF_ flags - see below. */ 1183070Spst unsigned ndots:4; /* threshold for initial abs. query */ 1193070Spst unsigned nsort:4; /* number of elements in sort_list[] */ 1203070Spst char unused[3]; 1213070Spst struct { 1223070Spst struct in_addr addr; 1233070Spst u_int32_t mask; 1243070Spst } sort_list[MAXRESOLVSORT]; 12521055Speter char pad[72]; /* on an i386 this means 512b total */ 1261539Srgrimes}; 1271539Srgrimes 1281539Srgrimes/* 1291539Srgrimes * Resolver options (keep these in synch with res_debug.c, please) 1301539Srgrimes */ 13110132Speter#define RES_INIT 0x00000001 /* address initialized */ 13210132Speter#define RES_DEBUG 0x00000002 /* print debug messages */ 13310132Speter#define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/ 13410132Speter#define RES_USEVC 0x00000008 /* use virtual circuit */ 13510132Speter#define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */ 13613771Smpp#define RES_IGNTC 0x00000020 /* ignore truncation errors */ 13710132Speter#define RES_RECURSE 0x00000040 /* recursion desired */ 13810132Speter#define RES_DEFNAMES 0x00000080 /* use default domain name */ 13910132Speter#define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */ 14010132Speter#define RES_DNSRCH 0x00000200 /* search up local domain tree */ 1413070Spst#define RES_INSECURE1 0x00000400 /* type 1 security disabled */ 1423070Spst#define RES_INSECURE2 0x00000800 /* type 2 security disabled */ 14310132Speter#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */ 14417902Speter#define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */ 14528982Sbrian#define RES_NOTLDQUERY 0x00004000 /* Don't query TLD names */ 1461539Srgrimes 14710132Speter#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) 1481539Srgrimes 1491539Srgrimes/* 1501539Srgrimes * Resolver "pfcode" values. Used by dig. 1511539Srgrimes */ 1523070Spst#define RES_PRF_STATS 0x00000001 15336888Speter#define RES_PRF_UPDATE 0x00000002 1543070Spst#define RES_PRF_CLASS 0x00000004 1553070Spst#define RES_PRF_CMD 0x00000008 1563070Spst#define RES_PRF_QUES 0x00000010 1573070Spst#define RES_PRF_ANS 0x00000020 1583070Spst#define RES_PRF_AUTH 0x00000040 1593070Spst#define RES_PRF_ADD 0x00000080 1603070Spst#define RES_PRF_HEAD1 0x00000100 1613070Spst#define RES_PRF_HEAD2 0x00000200 1623070Spst#define RES_PRF_TTLID 0x00000400 1633070Spst#define RES_PRF_HEADX 0x00000800 1643070Spst#define RES_PRF_QUERY 0x00001000 1653070Spst#define RES_PRF_REPLY 0x00002000 1663070Spst#define RES_PRF_INIT 0x00004000 1673070Spst/* 0x00008000 */ 1681539Srgrimes 1693070Spsttypedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } 1703070Spst res_sendhookact; 1711539Srgrimes 1723070Spsttypedef res_sendhookact (*res_send_qhook)__P((struct sockaddr_in * const *ns, 1733070Spst const u_char **query, 1743070Spst int *querylen, 1753070Spst u_char *ans, 1763070Spst int anssiz, 1773070Spst int *resplen)); 1783070Spst 1793070Spsttypedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr_in *ns, 1803070Spst const u_char *query, 1813070Spst int querylen, 1823070Spst u_char *ans, 1833070Spst int anssiz, 1843070Spst int *resplen)); 1853070Spst 18621055Speterstruct res_sym { 18721055Speter int number; /* Identifying number, like T_MX */ 18821055Speter char * name; /* Its symbolic name, like "MX" */ 18921055Speter char * humanname; /* Its fun name, like "mail exchanger" */ 19021055Speter}; 19121055Speter 1921539Srgrimesextern struct __res_state _res; 19321055Speterextern const struct res_sym __p_class_syms[]; 19421055Speterextern const struct res_sym __p_type_syms[]; 1951539Srgrimes 1961539Srgrimes/* Private routines shared between libc/net, named, nslookup and others. */ 19717902Speter#define res_hnok __res_hnok 19817902Speter#define res_ownok __res_ownok 19917902Speter#define res_mailok __res_mailok 20017902Speter#define res_dnok __res_dnok 20121055Speter#define sym_ston __sym_ston 20221055Speter#define sym_ntos __sym_ntos 20321055Speter#define sym_ntop __sym_ntop 20421055Speter#define b64_ntop __b64_ntop 20521055Speter#define b64_pton __b64_pton 20617902Speter#define loc_ntoa __loc_ntoa 20717902Speter#define loc_aton __loc_aton 20836898Speter#define fp_resstat __fp_resstat 20936898Speter#define p_query __p_query 2101539Srgrimes#define dn_skipname __dn_skipname 21121055Speter#define fp_resstat __fp_resstat 2121539Srgrimes#define fp_query __fp_query 2133070Spst#define fp_nquery __fp_nquery 2141539Srgrimes#define hostalias __hostalias 2151539Srgrimes#define putlong __putlong 2161539Srgrimes#define putshort __putshort 2173070Spst#define p_class __p_class 2183070Spst#define p_time __p_time 2193070Spst#define p_type __p_type 22021055Speter#define p_query __p_query 2213070Spst#define p_cdnname __p_cdnname 22236898Speter#define p_section __p_section 2233070Spst#define p_cdname __p_cdname 22421055Speter#define p_fqnname __p_fqnname 2253070Spst#define p_fqname __p_fqname 2263070Spst#define p_option __p_option 22721055Speter#define p_secstodate __p_secstodate 22821055Speter#define dn_count_labels __dn_count_labels 22921055Speter#define dn_comp __dn_comp 23036898Speter#define dn_expand __dn_expand 23136898Speter#define res_init __res_init 23210132Speter#define res_randomid __res_randomid 23336898Speter#define res_query __res_query 23436898Speter#define res_search __res_search 23536898Speter#define res_querydomain __res_querydomain 23636898Speter#define res_mkquery __res_mkquery 23736898Speter#define res_send __res_send 23810132Speter#define res_isourserver __res_isourserver 23910132Speter#define res_nameinquery __res_nameinquery 24010132Speter#define res_queriesmatch __res_queriesmatch 24121055Speter#define res_close __res_close 24236898Speter#define res_mkupdate __res_mkupdate 24336898Speter#define res_mkupdrec __res_mkupdrec 24436898Speter#define res_freeupdrec __res_freeupdrec 2453070Spst 2461539Srgrimes__BEGIN_DECLS 24721055Speterint res_hnok __P((const char *)); 24821055Speterint res_ownok __P((const char *)); 24921055Speterint res_mailok __P((const char *)); 25021055Speterint res_dnok __P((const char *)); 25136888Speterint sym_ston __P((const struct res_sym *, const char *, int *)); 25221055Speterconst char * sym_ntos __P((const struct res_sym *, int, int *)); 25321055Speterconst char * sym_ntop __P((const struct res_sym *, int, int *)); 25421055Speterint b64_ntop __P((u_char const *, size_t, char *, size_t)); 25521055Speterint b64_pton __P((char const *, u_char *, size_t)); 25621055Speterint loc_aton __P((const char *, u_char *)); 25721055Speterconst char * loc_ntoa __P((const u_char *, char *)); 25821055Speterint dn_skipname __P((const u_char *, const u_char *)); 25921055Spetervoid fp_resstat __P((struct __res_state *, FILE *)); 26021055Spetervoid fp_query __P((const u_char *, FILE *)); 26121055Spetervoid fp_nquery __P((const u_char *, int, FILE *)); 26221055Speterconst char * hostalias __P((const char *)); 26321055Spetervoid putlong __P((u_int32_t, u_char *)); 26421055Spetervoid putshort __P((u_int16_t, u_char *)); 26521055Speterconst char * p_class __P((int)); 26621055Speterconst char * p_time __P((u_int32_t)); 26721055Speterconst char * p_type __P((int)); 26821055Spetervoid p_query __P((const u_char *)); 26921055Speterconst u_char * p_cdnname __P((const u_char *, const u_char *, int, FILE *)); 27021055Speterconst u_char * p_cdname __P((const u_char *, const u_char *, FILE *)); 27121055Speterconst u_char * p_fqnname __P((const u_char *, const u_char *, 27221055Speter int, char *, int)); 27321055Speterconst u_char * p_fqname __P((const u_char *, const u_char *, FILE *)); 27421055Speterconst char * p_option __P((u_long)); 27521055Speterchar * p_secstodate __P((u_long)); 27636888Speterint dn_count_labels __P((const char *)); 27721055Speterint dn_comp __P((const char *, u_char *, int, 27821055Speter u_char **, u_char **)); 27921055Speterint dn_expand __P((const u_char *, const u_char *, const u_char *, 28021055Speter char *, int)); 28121055Speterint res_init __P((void)); 28221055Speteru_int res_randomid __P((void)); 28321055Speterint res_query __P((const char *, int, int, u_char *, int)); 28421055Speterint res_search __P((const char *, int, int, u_char *, int)); 28521055Speterint res_querydomain __P((const char *, const char *, int, int, 28621055Speter u_char *, int)); 28721055Speterint res_mkquery __P((int, const char *, int, int, const u_char *, 28821055Speter int, const u_char *, u_char *, int)); 28921055Speterint res_send __P((const u_char *, int, u_char *, int)); 29021055Speterint res_isourserver __P((const struct sockaddr_in *)); 29121055Speterint res_nameinquery __P((const char *, int, int, 29221055Speter const u_char *, const u_char *)); 29321055Speterint res_queriesmatch __P((const u_char *, const u_char *, 29421055Speter const u_char *, const u_char *)); 29521055Spetervoid res_close __P((void)); 29636888Speterconst char * p_section __P((int, int)); 29736898Speter/* XXX The following depend on the ns_updrec typedef in arpa/nameser.h */ 29836898Speter#ifdef _ARPA_NAMESER_H_ 29936888Speterint res_update __P((ns_updrec *)); 30036888Speterint res_mkupdate __P((ns_updrec *, u_char *, int)); 30136888Speterns_updrec * res_mkupdrec __P((int, const char *, u_int, u_int, u_long)); 30236888Spetervoid res_freeupdrec __P((ns_updrec *)); 30336898Speter#endif 3041539Srgrimes__END_DECLS 3051539Srgrimes 3061539Srgrimes#endif /* !_RESOLV_H_ */ 307