| /*- |
| * Copyright (c) 1983, 1987, 1989, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Berkeley and its contributors. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| /* |
| * Portions Copyright (c) 1996 by Internet Software Consortium. |
| * |
| * Permission to use, copy, modify, and distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS |
| * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE |
| * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
| * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
| * SOFTWARE. |
| */ |
| |
| /* |
| * @(#)resolv.h 8.1 (Berkeley) 6/2/93 |
| * From Id: resolv.h,v 8.12 1998/04/28 19:36:46 halley Exp $ |
| * $FreeBSD: src/include/resolv.h,v 1.21 2002/03/23 17:24:53 imp Exp $ |
| */ |
| |
| #ifndef _RESOLV_H_ |
| #define _RESOLV_H_ |
| |
| #include <sys/param.h> |
| #include <sys/types.h> |
| #include <sys/cdefs.h> |
| #include <sys/socket.h> |
| #include <stdio.h> |
| |
| /* |
| * Revision information. This is the release date in YYYYMMDD format. |
| * It can change every day so the right thing to do with it is use it |
| * in preprocessor commands such as "#if (__RES > 19931104)". Do not |
| * compare for equality; rather, use it to determine whether your resolver |
| * is new enough to contain a certain feature. |
| */ |
| |
| #define __RES 19960801 |
| |
| /* |
| * Resolver configuration file. |
| * Normally not present, but may contain the address of the |
| * inital name server(s) to query and the domain search list. |
| */ |
| |
| #ifndef _PATH_RESCONF |
| #define _PATH_RESCONF "/etc/resolv.conf" |
| #endif |
| |
| /* |
| * Global defines and variables for resolver stub. |
| */ |
| #define MAXNS 3 /* max # name servers we'll track */ |
| #define MAXDFLSRCH 3 /* # default domain levels to try */ |
| #define MAXDNSRCH 6 /* max # domains in search path */ |
| #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ |
| |
| #define RES_TIMEOUT 5 /* min. seconds between retries */ |
| #define MAXRESOLVSORT 10 /* number of net to sort on */ |
| #define RES_MAXNDOTS 15 /* should reflect bit field size */ |
| #define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */ |
| #define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */ |
| #define RES_DFLRETRY 2 /* Default #/tries. */ |
| #define RES_MAXTIME 65535 /* Infinity, in milliseconds. */ |
| |
| |
| typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } |
| res_sendhookact; |
| typedef res_sendhookact (*res_send_qhook) (struct sockaddr_in * const *ns, const u_char **query, |
| int *querylen, |
| u_char *ans, |
| int anssiz, |
| int *resplen); |
| |
| typedef res_sendhookact (*res_send_rhook) (const struct sockaddr_in *ns, |
| const u_char *query, |
| int querylen, |
| u_char *ans, |
| int anssiz, |
| int *resplen); |
| |
| |
| struct __res_state { |
| int retrans; /* retransmition time interval */ |
| int retry; /* number of times to retransmit */ |
| u_long options; /* option flags - see below. */ |
| int nscount; /* number of name servers */ |
| struct sockaddr_in |
| nsaddr_list[MAXNS]; /* address of name server */ |
| #define nsaddr nsaddr_list[0] /* for backward compatibility */ |
| u_short id; /* current message id */ |
| char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ |
| char defdname[256]; /* default domain (deprecated) */ |
| u_long pfcode; /* RES_PRF_ flags - see below. */ |
| unsigned ndots:4; /* threshold for initial abs. query */ |
| unsigned nsort:4; /* number of elements in sort_list[] */ |
| char unused[3]; |
| struct { |
| struct in_addr addr; |
| u_int32_t mask; |
| } sort_list[MAXRESOLVSORT]; |
| res_send_qhook qhook; /* query hook */ |
| res_send_rhook rhook; /* response hook */ |
| int res_h_errno; /* last one set for this context */ |
| int _vcsock; /* PRIVATE: for res_send VC i/o */ |
| u_int _flags; /* PRIVATE: see below */ |
| union { |
| char pad[52]; /* On an i386 this means 512b total. */ |
| struct { |
| u_int16_t nscount; |
| u_int16_t nsmap[MAXNS]; |
| int nssocks[MAXNS]; |
| u_int16_t nscount6; |
| u_int16_t nsinit; |
| struct sockaddr_in6 *nsaddrs[MAXNS]; |
| unsigned long long int initstamp |
| __attribute__((packed)); |
| #if 0 |
| unsigned int _initstamp[2]; |
| #endif |
| } _ext; |
| } _u; |
| }; |
| |
| typedef struct __res_state *res_state; |
| |
| /* for INET6 */ |
| /* |
| * replacement of __res_state, separated to keep binary compatibility. |
| */ |
| struct __res_state_ext { |
| struct sockaddr_storage nsaddr_list[MAXNS]; |
| struct { |
| int af; /* address family for addr, mask */ |
| union { |
| struct in_addr ina; |
| struct in6_addr in6a; |
| } addr, mask; |
| } sort_list[MAXRESOLVSORT]; |
| }; |
| |
| /* |
| * * Resolver flags (used to be discrete per-module statics ints). |
| * */ |
| #define RES_F_VC 0x00000001 /* socket is TCP */ |
| #define RES_F_CONN 0x00000002 /* socket is connected */ |
| |
| /* res_findzonecut() options */ |
| #define RES_EXHAUSTIVE 0x00000001 /* always do all queries */ |
| |
| /* |
| * Resolver options (keep these in synch with res_debug.c, please) |
| */ |
| #define RES_INIT 0x00000001 /* address initialized */ |
| #define RES_DEBUG 0x00000002 /* print debug messages */ |
| #define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/ |
| #define RES_USEVC 0x00000008 /* use virtual circuit */ |
| #define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */ |
| #define RES_IGNTC 0x00000020 /* ignore truncation errors */ |
| #define RES_RECURSE 0x00000040 /* recursion desired */ |
| #define RES_DEFNAMES 0x00000080 /* use default domain name */ |
| #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */ |
| #define RES_DNSRCH 0x00000200 /* search up local domain tree */ |
| #define RES_INSECURE1 0x00000400 /* type 1 security disabled */ |
| #define RES_INSECURE2 0x00000800 /* type 2 security disabled */ |
| #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */ |
| #define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */ |
| #define RES_ROTATE 0x00004000 /* rotate ns list after each query */ |
| #define RES_NOCHECKNAME 0x00008000 /* do not check names for sanity. */ |
| #define RES_KEEPTSIG 0x00010000 /* do not strip TSIG records */ |
| #define RES_BLAST 0x00020000 /* blast all recursive servers */ |
| #define RES_USEBSTRING 0x00040000 /* IPv6 reverse lookup with byte |
| strings */ |
| #define RES_NOIP6DOTINT 0x00080000 /* Do not use .ip6.int in IPv6 |
| reverse lookup */ |
| |
| #define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT) |
| |
| /* |
| * Resolver "pfcode" values. Used by dig. |
| */ |
| #define RES_PRF_STATS 0x00000001 |
| #define RES_PRF_UPDATE 0x00000002 |
| #define RES_PRF_CLASS 0x00000004 |
| #define RES_PRF_CMD 0x00000008 |
| #define RES_PRF_QUES 0x00000010 |
| #define RES_PRF_ANS 0x00000020 |
| #define RES_PRF_AUTH 0x00000040 |
| #define RES_PRF_ADD 0x00000080 |
| #define RES_PRF_HEAD1 0x00000100 |
| #define RES_PRF_HEAD2 0x00000200 |
| #define RES_PRF_TTLID 0x00000400 |
| #define RES_PRF_HEADX 0x00000800 |
| #define RES_PRF_QUERY 0x00001000 |
| #define RES_PRF_REPLY 0x00002000 |
| #define RES_PRF_INIT 0x00004000 |
| /* 0x00008000 */ |
| |
| #define RES_SET_H_ERRNO(r,x) \ |
| do \ |
| { \ |
| (r)->res_h_errno = x; \ |
| h_errno = (x); \ |
| } \ |
| while (0) |
| |
| struct res_sym { |
| int number; /* Identifying number, like T_MX */ |
| char * name; /* Its symbolic name, like "MX" */ |
| char * humanname; /* Its fun name, like "mail exchanger" */ |
| }; |
| |
| extern struct __res_state _res; |
| /* for INET6 */ |
| extern struct __res_state_ext _res_ext; |
| |
| extern const struct res_sym __p_class_syms[]; |
| extern const struct res_sym __p_type_syms[]; |
| |
| /* Private routines shared between libc/net, named, nslookup and others. */ |
| #define res_hnok __res_hnok |
| #define res_hostalias __res_hostalias |
| #define res_ownok __res_ownok |
| #define res_mailok __res_mailok |
| #define res_dnok __res_dnok |
| #define sym_ston __sym_ston |
| #define sym_ntos __sym_ntos |
| #define sym_ntop __sym_ntop |
| #define b64_ntop __b64_ntop |
| #define b64_pton __b64_pton |
| #define loc_ntoa __loc_ntoa |
| #define loc_aton __loc_aton |
| #define fp_resstat __fp_resstat |
| #define p_query __p_query |
| #define dn_skipname __dn_skipname |
| #define fp_resstat __fp_resstat |
| #define fp_query __fp_query |
| #define fp_nquery __fp_nquery |
| #define hostalias __hostalias |
| #define putlong __putlong |
| #define putshort __putshort |
| #define p_class __p_class |
| #define p_rcode __p_rcode |
| #define p_time __p_time |
| #define p_type __p_type |
| #define p_query __p_query |
| #define p_cdnname __p_cdnname |
| #define p_section __p_section |
| #define p_cdname __p_cdname |
| #define p_fqnname __p_fqnname |
| #define p_fqname __p_fqname |
| #define p_option __p_option |
| #define p_secstodate __p_secstodate |
| #define dn_count_labels __dn_count_labels |
| #define dn_comp __dn_comp |
| #define dn_expand __dn_expand |
| #define res_init __res_init |
| #define res_randomid __res_randomid |
| #define res_query __res_query |
| #define res_search __res_search |
| #define res_querydomain __res_querydomain |
| #define res_mkquery __res_mkquery |
| #define res_send __res_send |
| #define res_isourserver __res_isourserver |
| #define res_nameinquery __res_nameinquery |
| #define res_nclose __res_nclose |
| #define res_ninit __res_ninit |
| #define res_nmkquery __res_nmkquery |
| #define res_npquery __res_npquery |
| #define res_nquery __res_nquery |
| #define res_nquerydomain __res_nquerydomain |
| #define res_nsearch __res_nsearch |
| #define res_nsend __res_nsend |
| #define res_nisourserver __res_nisourserver |
| #define res_queriesmatch __res_queriesmatch |
| #define res_close __res_close |
| #define res_opt __res_opt |
| #define res_mkupdate __res_mkupdate |
| #define res_mkupdrec __res_mkupdrec |
| #define res_freeupdrec __res_freeupdrec |
| |
| __BEGIN_DECLS |
| int res_hnok(const char *); |
| int res_ownok(const char *); |
| int res_mailok(const char *); |
| int res_dnok(const char *); |
| int sym_ston(const struct res_sym *, const char *, int *); |
| const char * sym_ntos(const struct res_sym *, int, int *); |
| const char * sym_ntop(const struct res_sym *, int, int *); |
| int b64_ntop(u_char const *, size_t, char *, size_t); |
| int b64_pton(char const *, u_char *, size_t); |
| int loc_aton(const char *, u_char *); |
| const char * loc_ntoa(const u_char *, char *); |
| int dn_skipname(const u_char *, const u_char *); |
| void fp_resstat(struct __res_state *, FILE *); |
| void fp_query(const u_char *, FILE *); |
| void fp_nquery(const u_char *, int, FILE *); |
| const char * hostalias(const char *); |
| void putlong(u_int32_t, u_char *); |
| void putshort(u_int16_t, u_char *); |
| const char * p_class(int); |
| const char * p_rcode (int); |
| const char * p_time(u_int32_t); |
| const char * p_type(int); |
| void p_query(const u_char *); |
| const u_char * p_cdnname(const u_char *, const u_char *, int, FILE *); |
| const u_char * p_cdname(const u_char *, const u_char *, FILE *); |
| const u_char * p_fqnname(const u_char *, const u_char *, |
| int, char *, int); |
| const u_char * p_fqname(const u_char *, const u_char *, FILE *); |
| const char * p_option(u_long); |
| char * p_secstodate(u_long); |
| int dn_count_labels(const char *); |
| int dn_comp(const char *, u_char *, int, u_char **, u_char **); |
| int dn_expand(const u_char *, const u_char *, const u_char *, |
| char *, int); |
| int res_init(void); |
| u_int res_randomid(void); |
| int res_query(const char *, int, int, u_char *, int); |
| int res_search(const char *, int, int, u_char *, int); |
| int res_querydomain(const char *, const char *, int, int, |
| u_char *, int); |
| int res_mkquery(int, const char *, int, int, const u_char *, |
| int, const u_char *, u_char *, int); |
| int res_send(const u_char *, int, u_char *, int); |
| int res_isourserver(const struct sockaddr_in *); |
| int res_nameinquery(const char *, int, int, |
| const u_char *, const u_char *); |
| void res_npquery (const res_state, const u_char *, int, FILE *); |
| const char * res_hostalias (const res_state, const char *, char *, size_t); |
| int res_nquery (res_state, const char *, int, int, u_char *, int); |
| int res_nsearch (res_state, const char *, int, int, u_char *, int); |
| int res_nquerydomain (res_state, const char *, const char *, int, |
| int, u_char *, int); |
| int res_nmkquery (res_state, int, const char *, int, int, |
| const u_char *, int, const u_char *, u_char *, |
| int); |
| int res_nsend (res_state, const u_char *, int, u_char *, int); |
| void res_nclose (res_state); |
| |
| int res_queriesmatch(const u_char *, const u_char *, |
| const u_char *, const u_char *); |
| void res_close(void); |
| int res_opt(int, u_char *, int, int); |
| const char * p_section(int, int); |
| /* XXX The following depend on the ns_updrec typedef in arpa/nameser.h */ |
| #ifdef _ARPA_NAMESER_H_ |
| int res_update(ns_updrec *); |
| int res_mkupdate(ns_updrec *, u_char *, int); |
| ns_updrec * res_mkupdrec(int, const char *, u_int, u_int, u_long); |
| void res_freeupdrec(ns_updrec *); |
| #endif |
| |
| __END_DECLS |
| |
| #endif /* !_RESOLV_H_ */ |
