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- /*
- * ++Copyright++ 1983, 1987, 1989, 1993
- * -
- * 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
- * $Id: resolv.h,v 8.3 1995/06/29 09:26:10 vixie Exp $
- */
-
- #ifndef __netlib_resolv_h
- #define __netlib_resolv_h
-
- /* Freenet programmers interface - resolv.h - edited by stewart 7/2/96 */
-
- #include "sys/types.h"
- #include "netinet/in.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 "InetDBase:resconf"
- #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_int32_t 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 trucation 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);
-
-
- 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;
- 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_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 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_time __p_time
- #define p_type __p_type
- #define p_query __p_query
- #define p_cdnname __p_cdnname
- #define p_cdname __p_cdname
- #define p_fqnname __p_fqnname
- #define p_fqname __p_fqname
- #define p_rr __p_rr
- #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_queriesmatch __res_queriesmatch
- #define res_close __res_close
-
- #ifdef __cplusplus
- /* Since this code is going to externally linked, we MUST guarantee link
- * success by ensuring that the compiler knows that it was compiled as C
- * code with the extern C, and provide full ANSI prototypes despite the
- * source code being K&R style
- */
- extern "C" {
- #endif
-
- /*
- * Skip over a compressed domain name. Return the size or -1.
- */
- extern int __dn_skipname (const u_char * /*comp_dn*/, const u_char * /*eom*/);
-
- /*
- * Compress domain name 'exp_dn' into 'comp_dn'.
- * Return the size of the compressed name or -1.
- * 'length' is the size of the array pointed to by 'comp_dn'.
- * 'dnptrs' is a list of pointers to previous compressed names. dnptrs[0]
- * is a pointer to the beginning of the message. The list ends with NULL.
- * 'lastdnptr' is a pointer to the end of the arrary pointed to
- * by 'dnptrs'. Side effect is to update the list of pointers for
- * labels inserted into the message as we compress the name.
- * If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
- * is NULL, we don't update the list.
- */
- extern int dn_comp (const char * /*exp_dn*/, u_char * /*comp_dn*/, int /*length*/,
- u_char ** /*dnptrs*/, u_char ** /*lastdnptr*/);
-
- /*
- * Expand compressed domain name 'comp_dn' to full domain name.
- * 'msg' is a pointer to the begining of the message,
- * 'eomorig' points to the first location after the message,
- * 'exp_dn' is a pointer to a buffer of size 'length' for the result.
- * Return size of compressed name or -1 if there was an error.
- */
- extern int dn_expand (const u_char * /*msg*/, const u_char * /*eomorig*/,
- const u_char * /*comp_dn*/, char * /*exp_dn*/, int /*length*/);
-
-
-
- extern int res_hnok(const char *);
- extern int res_ownok(const char *);
- extern int res_mailok(const char *);
- extern int res_dnok(const char *);
- extern int sym_ston(const struct res_sym *, char *, int *);
- extern const char * sym_ntos(const struct res_sym *, int, int *);
- extern const char * sym_ntop(const struct res_sym *, int, int *);
- extern int b64_ntop(u_char const *, size_t, char *, size_t);
- extern int b64_pton(char const *, u_char *, size_t);
- extern int loc_aton(const char *, u_char *);
- extern const char * loc_ntoa(const u_char *, char *);
- extern int dn_skipname(const u_char *, const u_char *);
- extern void fp_resstat(struct __res_state *, FILE *);
- extern void fp_query(const u_char *, FILE *);
- extern void fp_nquery(const u_char *, int, FILE *);
- extern const char * hostalias(const char *);
- extern void putlong(u_int32_t, u_char *);
- extern void putshort(u_int16_t, u_char *);
- extern const char * p_class(int);
- extern const char * p_time(u_int32_t);
- extern const char * p_type(int);
- extern void p_query(const u_char *);
- extern const u_char * p_cdnname(const u_char *, const u_char *, int, FILE *);
- extern const u_char * p_cdname(const u_char *, const u_char *, FILE *);
- extern const u_char * p_fqnname(const u_char *cp, const u_char *msg,
- int, char *, int);
- extern const u_char * p_fqname(const u_char *, const u_char *, FILE *);
- extern const u_char * p_rr(const u_char *, const u_char *, FILE *);
- extern const char * p_option(u_long option);
- extern char * p_secstodate(u_long);
- extern int dn_count_labels(char *);
- extern int dn_comp(const char *, u_char *, int,
- u_char **, u_char **);
- extern int dn_expand(const u_char *, const u_char *, const u_char *,
- char *, int);
- extern int _resolver_init(void);
- extern u_int res_randomid(void);
- extern int res_query(const char *, int, int, u_char *, int);
- extern int res_search(const char *, int, int, u_char *, int);
- extern int res_querydomain(const char *, const char *, int, int,
- u_char *, int);
- extern int res_mkquery(int, const char *, int, int, const u_char *, int,
- const u_char *, u_char *, int);
- extern int res_send(const u_char *, int, u_char *, int);
- extern int res_isourserver(const struct sockaddr_in *);
- extern int res_nameinquery(const char *, int, int,
- const u_char *, const u_char *);
- extern int res_queriesmatch(const u_char *, const u_char *,
- const u_char *, const u_char *);
- extern void res_close(void);
-
- #ifdef __cplusplus
- /* end of C++ protection for the prototypes */
- }
- #endif
-
- /* end of resolv.h */
- #endif
-