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| /*!\file resolv.h |
| * Resolver API. |
| */ |
| |
| /*- |
| * 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) 1993 by Digital Equipment Corporation. |
| * |
| * 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, and that |
| * the name of Digital Equipment Corporation not be used in advertising or |
| * publicity pertaining to distribution of the document or software without |
| * specific, written prior permission. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT |
| * CORPORATION 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. |
| * - |
| * --Copyright-- |
| * |
| * @(#)resolv.h 8.1 (Berkeley) 6/2/93 |
| * From Id: resolv.h,v 4.9.1.2 1993/05/17 09:59:01 vixie Exp |
| * $Id: resolv.h,v 1.7 1996/08/29 20:00:58 peter Exp $ |
| */ |
| |
| #ifndef _RESOLV_H_ |
| #define _RESOLV_H_ |
| |
| #include <stdio.h> |
| |
| #ifndef __SYS_W32API_H |
| #include <sys/w32api.h> |
| #endif |
| |
| #ifndef __SYS_PARAM_H |
| #include <sys/param.h> |
| #endif |
| |
| #ifndef __SYS_WTYPES_H |
| #include <sys/wtypes.h> |
| #endif |
| |
| #ifndef __SYS_CDEFS_H |
| #include <sys/cdefs.h> |
| #endif |
| |
| |
| /* |
| * 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 19960229 |
| |
| /* |
| * 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 */ |
| |
| 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 packet id */ |
| char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ |
| char defdname[MAXDNAME]; /* default domain */ |
| 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_long mask; |
| } sort_list[MAXRESOLVSORT]; |
| char pad[72]; /* On an i386 this means 512b total. */ |
| }; |
| |
| /* |
| * 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_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) |
| |
| /* |
| * Resolver "pfcode" values. Used by dig. |
| */ |
| #define RES_PRF_STATS 0x00000001 |
| /* 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 */ |
| |
| /* hooks are still experimental as of 4.9.2 */ |
| 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); |
| |
| W32_DATA struct __res_state _res; |
| |
| W32_DATA int h_errno; |
| |
| /* Private routines shared between libc/net, named, nslookup and others. */ |
| #define res_hnok __res_hnok |
| #define res_ownok __res_ownok |
| #define res_mailok __res_mailok |
| #define res_dnok __res_dnok |
| #define loc_ntoa __loc_ntoa |
| #define loc_aton __loc_aton |
| #define dn_skipname __dn_skipname |
| #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_time __p_time |
| #define p_type __p_type |
| #define p_cdnname __p_cdnname |
| #define p_cdname __p_cdname |
| #define p_fqname __p_fqname |
| #define p_rr __p_rr |
| #define p_option __p_option |
| #define res_randomid __res_randomid |
| #define res_isourserver __res_isourserver |
| #define res_nameinquery __res_nameinquery |
| #define res_queriesmatch __res_queriesmatch |
| |
| __BEGIN_DECLS |
| |
| W32_FUNC int __res_hnok (const char *); |
| W32_FUNC int __res_ownok (const char *); |
| W32_FUNC int __res_mailok (const char *); |
| W32_FUNC int __res_dnok (const char *); |
| W32_FUNC int __loc_aton (const char *ascii, u_char *binary); |
| W32_FUNC char * __loc_ntoa (const u_char *binary, char *ascii); |
| W32_FUNC int __dn_skipname(const u_char *, const u_char *); |
| W32_FUNC void __fp_resstat (struct __res_state *, FILE *); |
| W32_FUNC void __fp_query (const u_char *, FILE *); |
| W32_FUNC void __fp_nquery (const u_char *, int, FILE *); |
| W32_FUNC char *__hostalias (const char *); |
| W32_FUNC void __putlong (u_long, u_char *); |
| W32_FUNC void __putshort (u_short, u_char *); |
| W32_FUNC char *__p_time (u_long); |
| W32_FUNC void __p_query (const u_char *); |
| |
| W32_FUNC const u_char *__p_cdnname (const u_char *, const u_char *, int, FILE *); |
| W32_FUNC const u_char *__p_cdname (const u_char *, const u_char *, FILE *); |
| W32_FUNC const u_char *__p_fqname (const u_char *, const u_char *, FILE *); |
| W32_FUNC const u_char *__p_rr (const u_char *, const u_char *, FILE *); |
| W32_FUNC const char *__p_type (int); |
| W32_FUNC const char *__p_class (int); |
| W32_FUNC const char *__p_option (u_long option); |
| |
| W32_FUNC int dn_comp (const char *, u_char *, int, u_char **, u_char **); |
| W32_FUNC int dn_expand (const u_char *, const u_char *, const u_char *, char *, int); |
| |
| W32_FUNC int res_init (void); |
| W32_FUNC u_short res_randomid (void); |
| W32_FUNC int res_query (const char *, int, int, u_char *, int); |
| W32_FUNC int res_search (const char *, int, int, u_char *, int); |
| W32_FUNC int res_querydomain (const char *, const char *, int, int, u_char *, int); |
| W32_FUNC int res_mkquery (int, const char *, int, int, const u_char *, int, const u_char *, u_char *, int); |
| W32_FUNC int res_send (const u_char *, int, u_char *, int); |
| W32_FUNC int res_isourserver (const struct sockaddr_in *); |
| W32_FUNC int res_nameinquery (const char *, int, int, const u_char *, const u_char *); |
| W32_FUNC int res_queriesmatch(const u_char *, const u_char *, const u_char *, const u_char *); |
| |
| W32_FUNC void res_send_setqhook (res_send_qhook hook); |
| W32_FUNC void res_send_setrhook (res_send_rhook hook); |
| |
| __END_DECLS |
| |
| #endif /* !_RESOLV_H_ */ |