xref: /freebsd/include/resolv.h (revision dde4a85d9ddb5d516c37a565156ef509738c3c22)
15342d17fSHajimu UMEMOTO /*
25342d17fSHajimu UMEMOTO  * Copyright (c) 1983, 1987, 1989
359deaec5SRodney W. Grimes  *    The Regents of the University of California.  All rights reserved.
459deaec5SRodney W. Grimes  *
559deaec5SRodney W. Grimes  * Redistribution and use in source and binary forms, with or without
659deaec5SRodney W. Grimes  * modification, are permitted provided that the following conditions
759deaec5SRodney W. Grimes  * are met:
859deaec5SRodney W. Grimes  * 1. Redistributions of source code must retain the above copyright
959deaec5SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer.
1059deaec5SRodney W. Grimes  * 2. Redistributions in binary form must reproduce the above copyright
1159deaec5SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer in the
1259deaec5SRodney W. Grimes  *    documentation and/or other materials provided with the distribution.
1359deaec5SRodney W. Grimes  * 3. All advertising materials mentioning features or use of this software
1459deaec5SRodney W. Grimes  *    must display the following acknowledgement:
1559deaec5SRodney W. Grimes  * 	This product includes software developed by the University of
1659deaec5SRodney W. Grimes  * 	California, Berkeley and its contributors.
1759deaec5SRodney W. Grimes  * 4. Neither the name of the University nor the names of its contributors
1859deaec5SRodney W. Grimes  *    may be used to endorse or promote products derived from this software
1959deaec5SRodney W. Grimes  *    without specific prior written permission.
2059deaec5SRodney W. Grimes  *
2159deaec5SRodney W. Grimes  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
2259deaec5SRodney W. Grimes  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2359deaec5SRodney W. Grimes  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2459deaec5SRodney W. Grimes  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2559deaec5SRodney W. Grimes  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2659deaec5SRodney W. Grimes  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2759deaec5SRodney W. Grimes  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2859deaec5SRodney W. Grimes  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2959deaec5SRodney W. Grimes  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
3059deaec5SRodney W. Grimes  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
3159deaec5SRodney W. Grimes  * SUCH DAMAGE.
320160f9c0SPeter Wemm  */
330160f9c0SPeter Wemm 
340160f9c0SPeter Wemm /*
355342d17fSHajimu UMEMOTO  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
365342d17fSHajimu UMEMOTO  * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
3759deaec5SRodney W. Grimes  *
3859deaec5SRodney W. Grimes  * Permission to use, copy, modify, and distribute this software for any
3959deaec5SRodney W. Grimes  * purpose with or without fee is hereby granted, provided that the above
400160f9c0SPeter Wemm  * copyright notice and this permission notice appear in all copies.
4159deaec5SRodney W. Grimes  *
425342d17fSHajimu UMEMOTO  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
435342d17fSHajimu UMEMOTO  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
445342d17fSHajimu UMEMOTO  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
455342d17fSHajimu UMEMOTO  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
465342d17fSHajimu UMEMOTO  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
475342d17fSHajimu UMEMOTO  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
485342d17fSHajimu UMEMOTO  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
490160f9c0SPeter Wemm  */
500160f9c0SPeter Wemm 
51dde4a85dSHajimu UMEMOTO /*%
521363f04cSPaul Traina  *	@(#)resolv.h	8.1 (Berkeley) 6/2/93
53dde4a85dSHajimu UMEMOTO  *	$Id: resolv.h,v 1.19.18.3 2005/08/25 04:43:51 marka Exp $
54a4add9a9SPeter Wemm  * $FreeBSD$
5559deaec5SRodney W. Grimes  */
5659deaec5SRodney W. Grimes 
5759deaec5SRodney W. Grimes #ifndef _RESOLV_H_
5859deaec5SRodney W. Grimes #define	_RESOLV_H_
5959deaec5SRodney W. Grimes 
601363f04cSPaul Traina #include <sys/param.h>
6159deaec5SRodney W. Grimes #include <sys/types.h>
621363f04cSPaul Traina #include <sys/cdefs.h>
637d56d374SYoshinobu Inoue #include <sys/socket.h>
641363f04cSPaul Traina #include <stdio.h>
655342d17fSHajimu UMEMOTO #include <arpa/nameser.h>
661363f04cSPaul Traina 
67dde4a85dSHajimu UMEMOTO /*%
68315d6d9cSPeter Wemm  * Revision information.  This is the release date in YYYYMMDD format.
69315d6d9cSPeter Wemm  * It can change every day so the right thing to do with it is use it
70315d6d9cSPeter Wemm  * in preprocessor commands such as "#if (__RES > 19931104)".  Do not
711363f04cSPaul Traina  * compare for equality; rather, use it to determine whether your resolver
721363f04cSPaul Traina  * is new enough to contain a certain feature.
731363f04cSPaul Traina  */
741363f04cSPaul Traina 
755342d17fSHajimu UMEMOTO #define	__RES	20030124
765342d17fSHajimu UMEMOTO 
77dde4a85dSHajimu UMEMOTO /*%
785342d17fSHajimu UMEMOTO  * This used to be defined in res_query.c, now it's in herror.c.
795342d17fSHajimu UMEMOTO  * [XXX no it's not.  It's in irs/irs_data.c]
805342d17fSHajimu UMEMOTO  * It was
815342d17fSHajimu UMEMOTO  * never extern'd by any *.h file before it was placed here.  For thread
825342d17fSHajimu UMEMOTO  * aware programs, the last h_errno value set is stored in res->h_errno.
835342d17fSHajimu UMEMOTO  *
845342d17fSHajimu UMEMOTO  * XXX:	There doesn't seem to be a good reason for exposing RES_SET_H_ERRNO
855342d17fSHajimu UMEMOTO  *	(and __h_errno_set) to the public via <resolv.h>.
865342d17fSHajimu UMEMOTO  * XXX:	__h_errno_set is really part of IRS, not part of the resolver.
875342d17fSHajimu UMEMOTO  *	If somebody wants to build and use a resolver that doesn't use IRS,
885342d17fSHajimu UMEMOTO  *	what do they do?  Perhaps something like
895342d17fSHajimu UMEMOTO  *		#ifdef WANT_IRS
905342d17fSHajimu UMEMOTO  *		# define RES_SET_H_ERRNO(r,x) __h_errno_set(r,x)
915342d17fSHajimu UMEMOTO  *		#else
925342d17fSHajimu UMEMOTO  *		# define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x))
935342d17fSHajimu UMEMOTO  *		#endif
945342d17fSHajimu UMEMOTO  */
955342d17fSHajimu UMEMOTO 
965342d17fSHajimu UMEMOTO #define RES_SET_H_ERRNO(r,x) __h_errno_set(r,x)
97dde4a85dSHajimu UMEMOTO struct __res_state; /*%< forward */
985342d17fSHajimu UMEMOTO __BEGIN_DECLS
995342d17fSHajimu UMEMOTO void __h_errno_set(struct __res_state *, int);
1005342d17fSHajimu UMEMOTO __END_DECLS
1011363f04cSPaul Traina 
102dde4a85dSHajimu UMEMOTO /*%
10359deaec5SRodney W. Grimes  * Resolver configuration file.
10459deaec5SRodney W. Grimes  * Normally not present, but may contain the address of the
1055342d17fSHajimu UMEMOTO  * initial name server(s) to query and the domain search list.
10659deaec5SRodney W. Grimes  */
10759deaec5SRodney W. Grimes 
10859deaec5SRodney W. Grimes #ifndef _PATH_RESCONF
10959deaec5SRodney W. Grimes #define	_PATH_RESCONF        "/etc/resolv.conf"
11059deaec5SRodney W. Grimes #endif
11159deaec5SRodney W. Grimes 
1125342d17fSHajimu UMEMOTO typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
1135342d17fSHajimu UMEMOTO 	res_sendhookact;
1145342d17fSHajimu UMEMOTO 
1155342d17fSHajimu UMEMOTO typedef res_sendhookact (*res_send_qhook)(struct sockaddr * const *,
1165342d17fSHajimu UMEMOTO 					  const u_char **, int *,
1175342d17fSHajimu UMEMOTO 					  u_char *, int, int *);
1185342d17fSHajimu UMEMOTO 
1195342d17fSHajimu UMEMOTO typedef res_sendhookact (*res_send_rhook)(const struct sockaddr *,
1205342d17fSHajimu UMEMOTO 					  const u_char *, int, u_char *,
1215342d17fSHajimu UMEMOTO 					  int, int *);
1225342d17fSHajimu UMEMOTO 
1235342d17fSHajimu UMEMOTO struct res_sym {
124dde4a85dSHajimu UMEMOTO 	int		number;	   /*%< Identifying number, like T_MX */
125dde4a85dSHajimu UMEMOTO 	const char *	name;	   /*%< Its symbolic name, like "MX" */
126dde4a85dSHajimu UMEMOTO 	const char *	humanname; /*%< Its fun name, like "mail exchanger" */
1275342d17fSHajimu UMEMOTO };
1285342d17fSHajimu UMEMOTO 
129dde4a85dSHajimu UMEMOTO /*%
13059deaec5SRodney W. Grimes  * Global defines and variables for resolver stub.
13159deaec5SRodney W. Grimes  */
132dde4a85dSHajimu UMEMOTO #define	MAXNS			3	/*%< max # name servers we'll track */
133dde4a85dSHajimu UMEMOTO #define	MAXDFLSRCH		3	/*%< # default domain levels to try */
134dde4a85dSHajimu UMEMOTO #define	MAXDNSRCH		6	/*%< max # domains in search path */
135dde4a85dSHajimu UMEMOTO #define	LOCALDOMAINPARTS	2	/*%< min levels in name that is "local" */
136dde4a85dSHajimu UMEMOTO #define	RES_TIMEOUT		5	/*%< min. seconds between retries */
137dde4a85dSHajimu UMEMOTO #define	MAXRESOLVSORT		10	/*%< number of net to sort on */
138dde4a85dSHajimu UMEMOTO #define	RES_MAXNDOTS		15	/*%< should reflect bit field size */
139dde4a85dSHajimu UMEMOTO #define	RES_MAXRETRANS		30	/*%< only for resolv.conf/RES_OPTIONS */
140dde4a85dSHajimu UMEMOTO #define	RES_MAXRETRY		5	/*%< only for resolv.conf/RES_OPTIONS */
141dde4a85dSHajimu UMEMOTO #define	RES_DFLRETRY		2	/*%< Default #/tries. */
142dde4a85dSHajimu UMEMOTO #define	RES_MAXTIME		65535	/*%< Infinity, in milliseconds. */
1435342d17fSHajimu UMEMOTO struct __res_state_ext;
14459deaec5SRodney W. Grimes 
14559deaec5SRodney W. Grimes struct __res_state {
146dde4a85dSHajimu UMEMOTO 	int	retrans;	 	/*%< retransmission time interval */
147dde4a85dSHajimu UMEMOTO 	int	retry;			/*%< number of times to retransmit */
1485342d17fSHajimu UMEMOTO 	/*
1495342d17fSHajimu UMEMOTO 	 * XXX: If `sun' is defined, `options' and `pfcode' are
1505342d17fSHajimu UMEMOTO 	 * defined as u_int in original BIND9 distribution.  However,
1515342d17fSHajimu UMEMOTO 	 * it breaks binary backward compatibility against FreeBSD's
1525342d17fSHajimu UMEMOTO 	 * resolver.  So, we changed not to see `sun'.
1535342d17fSHajimu UMEMOTO 	 */
1545342d17fSHajimu UMEMOTO #if defined(sun) && 0
155dde4a85dSHajimu UMEMOTO 	u_int	options;		/*%< option flags - see below. */
1565342d17fSHajimu UMEMOTO #else
157dde4a85dSHajimu UMEMOTO 	u_long	options;		/*%< option flags - see below. */
1585342d17fSHajimu UMEMOTO #endif
159dde4a85dSHajimu UMEMOTO 	int	nscount;		/*%< number of name servers */
1601363f04cSPaul Traina 	struct sockaddr_in
161dde4a85dSHajimu UMEMOTO 		nsaddr_list[MAXNS];	/*%< address of name server */
162dde4a85dSHajimu UMEMOTO #define	nsaddr	nsaddr_list[0]		/*%< for backward compatibility */
163dde4a85dSHajimu UMEMOTO 	u_short	id;			/*%< current message id */
164dde4a85dSHajimu UMEMOTO 	char	*dnsrch[MAXDNSRCH+1];	/*%< components of domain to search */
165dde4a85dSHajimu UMEMOTO 	char	defdname[256];		/*%< default domain (deprecated) */
1665342d17fSHajimu UMEMOTO #if defined(sun) && 0
167dde4a85dSHajimu UMEMOTO 	u_int	pfcode;			/*%< RES_PRF_ flags - see below. */
1685342d17fSHajimu UMEMOTO #else
169dde4a85dSHajimu UMEMOTO 	u_long	pfcode;			/*%< RES_PRF_ flags - see below. */
1705342d17fSHajimu UMEMOTO #endif
171dde4a85dSHajimu UMEMOTO 	unsigned ndots:4;		/*%< threshold for initial abs. query */
172dde4a85dSHajimu UMEMOTO 	unsigned nsort:4;		/*%< number of elements in sort_list[] */
1731363f04cSPaul Traina 	char	unused[3];
1741363f04cSPaul Traina 	struct {
1751363f04cSPaul Traina 		struct in_addr	addr;
1761363f04cSPaul Traina 		u_int32_t	mask;
1771363f04cSPaul Traina 	} sort_list[MAXRESOLVSORT];
178dde4a85dSHajimu UMEMOTO 	res_send_qhook qhook;		/*%< query hook */
179dde4a85dSHajimu UMEMOTO 	res_send_rhook rhook;		/*%< response hook */
180dde4a85dSHajimu UMEMOTO 	int	res_h_errno;		/*%< last one set for this context */
181dde4a85dSHajimu UMEMOTO 	int	_vcsock;		/*%< PRIVATE: for res_send VC i/o */
182dde4a85dSHajimu UMEMOTO 	u_int	_flags;			/*%< PRIVATE: see below */
183dde4a85dSHajimu UMEMOTO 	u_int	_pad;			/*%< make _u 64 bit aligned */
1845342d17fSHajimu UMEMOTO 	union {
1855342d17fSHajimu UMEMOTO 		/* On an 32-bit arch this means 512b total. */
1865342d17fSHajimu UMEMOTO 		char	pad[72 - 4*sizeof (int) - 2*sizeof (void *)];
1875342d17fSHajimu UMEMOTO 		struct {
1885342d17fSHajimu UMEMOTO 			u_int16_t		nscount;
189dde4a85dSHajimu UMEMOTO 			u_int16_t		nstimes[MAXNS];	/*%< ms. */
1905342d17fSHajimu UMEMOTO 			int			nssocks[MAXNS];
191dde4a85dSHajimu UMEMOTO 			struct __res_state_ext *ext;	/*%< extention for IPv6 */
1925342d17fSHajimu UMEMOTO 		} _ext;
1935342d17fSHajimu UMEMOTO 	} _u;
19459deaec5SRodney W. Grimes };
19559deaec5SRodney W. Grimes 
1965342d17fSHajimu UMEMOTO typedef struct __res_state *res_state;
1975342d17fSHajimu UMEMOTO 
1985342d17fSHajimu UMEMOTO union res_sockaddr_union {
1995342d17fSHajimu UMEMOTO 	struct sockaddr_in	sin;
2005342d17fSHajimu UMEMOTO #ifdef IN6ADDR_ANY_INIT
2015342d17fSHajimu UMEMOTO 	struct sockaddr_in6	sin6;
2025342d17fSHajimu UMEMOTO #endif
2035342d17fSHajimu UMEMOTO #ifdef ISC_ALIGN64
204dde4a85dSHajimu UMEMOTO 	int64_t			__align64;	/*%< 64bit alignment */
2055342d17fSHajimu UMEMOTO #else
206dde4a85dSHajimu UMEMOTO 	int32_t			__align32;	/*%< 32bit alignment */
2075342d17fSHajimu UMEMOTO #endif
208dde4a85dSHajimu UMEMOTO 	char			__space[128];   /*%< max size */
2097d56d374SYoshinobu Inoue };
2107d56d374SYoshinobu Inoue 
211dde4a85dSHajimu UMEMOTO /*%
2125342d17fSHajimu UMEMOTO  * Resolver flags (used to be discrete per-module statics ints).
2135342d17fSHajimu UMEMOTO  */
214dde4a85dSHajimu UMEMOTO #define	RES_F_VC	0x00000001	/*%< socket is TCP */
215dde4a85dSHajimu UMEMOTO #define	RES_F_CONN	0x00000002	/*%< socket is connected */
216dde4a85dSHajimu UMEMOTO #define	RES_F_EDNS0ERR	0x00000004	/*%< EDNS0 caused errors */
217dde4a85dSHajimu UMEMOTO #define	RES_F__UNUSED	0x00000008	/*%< (unused) */
218dde4a85dSHajimu UMEMOTO #define	RES_F_LASTMASK	0x000000F0	/*%< ordinal server of last res_nsend */
219dde4a85dSHajimu UMEMOTO #define	RES_F_LASTSHIFT	4		/*%< bit position of LASTMASK "flag" */
2205342d17fSHajimu UMEMOTO #define	RES_GETLAST(res) (((res)._flags & RES_F_LASTMASK) >> RES_F_LASTSHIFT)
2215342d17fSHajimu UMEMOTO 
2225342d17fSHajimu UMEMOTO /* res_findzonecut2() options */
223dde4a85dSHajimu UMEMOTO #define	RES_EXHAUSTIVE	0x00000001	/*%< always do all queries */
224dde4a85dSHajimu UMEMOTO #define	RES_IPV4ONLY	0x00000002	/*%< IPv4 only */
225dde4a85dSHajimu UMEMOTO #define	RES_IPV6ONLY	0x00000004	/*%< IPv6 only */
2265342d17fSHajimu UMEMOTO 
227dde4a85dSHajimu UMEMOTO /*%
22859deaec5SRodney W. Grimes  * Resolver options (keep these in synch with res_debug.c, please)
22959deaec5SRodney W. Grimes  */
230dde4a85dSHajimu UMEMOTO #define RES_INIT	0x00000001	/*%< address initialized */
231dde4a85dSHajimu UMEMOTO #define RES_DEBUG	0x00000002	/*%< print debug messages */
232dde4a85dSHajimu UMEMOTO #define RES_AAONLY	0x00000004	/*%< authoritative answers only (!IMPL)*/
233dde4a85dSHajimu UMEMOTO #define RES_USEVC	0x00000008	/*%< use virtual circuit */
234dde4a85dSHajimu UMEMOTO #define RES_PRIMARY	0x00000010	/*%< query primary server only (!IMPL) */
235dde4a85dSHajimu UMEMOTO #define RES_IGNTC	0x00000020	/*%< ignore truncation errors */
236dde4a85dSHajimu UMEMOTO #define RES_RECURSE	0x00000040	/*%< recursion desired */
237dde4a85dSHajimu UMEMOTO #define RES_DEFNAMES	0x00000080	/*%< use default domain name */
238dde4a85dSHajimu UMEMOTO #define RES_STAYOPEN	0x00000100	/*%< Keep TCP socket open */
239dde4a85dSHajimu UMEMOTO #define RES_DNSRCH	0x00000200	/*%< search up local domain tree */
240dde4a85dSHajimu UMEMOTO #define	RES_INSECURE1	0x00000400	/*%< type 1 security disabled */
241dde4a85dSHajimu UMEMOTO #define	RES_INSECURE2	0x00000800	/*%< type 2 security disabled */
242dde4a85dSHajimu UMEMOTO #define	RES_NOALIASES	0x00001000	/*%< shuts off HOSTALIASES feature */
243dde4a85dSHajimu UMEMOTO #define	RES_USE_INET6	0x00002000	/*%< use/map IPv6 in gethostbyname() */
244dde4a85dSHajimu UMEMOTO #define RES_ROTATE	0x00004000	/*%< rotate ns list after each query */
245dde4a85dSHajimu UMEMOTO #define	RES_NOCHECKNAME	0x00008000	/*%< do not check names for sanity. */
246dde4a85dSHajimu UMEMOTO #define	RES_KEEPTSIG	0x00010000	/*%< do not strip TSIG records */
247dde4a85dSHajimu UMEMOTO #define	RES_BLAST	0x00020000	/*%< blast all recursive servers */
248dde4a85dSHajimu UMEMOTO #define RES_NOTLDQUERY	0x00100000	/*%< don't unqualified name as a tld */
249dde4a85dSHajimu UMEMOTO #define RES_USE_DNSSEC	0x00200000	/*%< use DNSSEC using OK bit in OPT */
2505342d17fSHajimu UMEMOTO /* #define RES_DEBUG2	0x00400000 */	/* nslookup internal */
251ce6282dbSHajimu UMEMOTO /* KAME extensions: use higher bit to avoid conflict with ISC use */
252dde4a85dSHajimu UMEMOTO #define RES_USE_DNAME	0x10000000	/*%< use DNAME */
253dde4a85dSHajimu UMEMOTO #define RES_USE_EDNS0	0x40000000	/*%< use EDNS0 if configured */
254dde4a85dSHajimu UMEMOTO #define RES_NO_NIBBLE2	0x80000000	/*%< disable alternate nibble lookup */
25559deaec5SRodney W. Grimes 
2565342d17fSHajimu UMEMOTO #define RES_DEFAULT	(RES_RECURSE | RES_DEFNAMES | \
2575342d17fSHajimu UMEMOTO 			 RES_DNSRCH | RES_NO_NIBBLE2)
25859deaec5SRodney W. Grimes 
259dde4a85dSHajimu UMEMOTO /*%
26059deaec5SRodney W. Grimes  * Resolver "pfcode" values.  Used by dig.
26159deaec5SRodney W. Grimes  */
2621363f04cSPaul Traina #define	RES_PRF_STATS	0x00000001
2630160f9c0SPeter Wemm #define	RES_PRF_UPDATE	0x00000002
2641363f04cSPaul Traina #define	RES_PRF_CLASS   0x00000004
2651363f04cSPaul Traina #define	RES_PRF_CMD	0x00000008
2661363f04cSPaul Traina #define	RES_PRF_QUES	0x00000010
2671363f04cSPaul Traina #define	RES_PRF_ANS	0x00000020
2681363f04cSPaul Traina #define	RES_PRF_AUTH	0x00000040
2691363f04cSPaul Traina #define	RES_PRF_ADD	0x00000080
2701363f04cSPaul Traina #define	RES_PRF_HEAD1	0x00000100
2711363f04cSPaul Traina #define	RES_PRF_HEAD2	0x00000200
2721363f04cSPaul Traina #define	RES_PRF_TTLID	0x00000400
2731363f04cSPaul Traina #define	RES_PRF_HEADX	0x00000800
2741363f04cSPaul Traina #define	RES_PRF_QUERY	0x00001000
2751363f04cSPaul Traina #define	RES_PRF_REPLY	0x00002000
2761363f04cSPaul Traina #define	RES_PRF_INIT	0x00004000
2775342d17fSHajimu UMEMOTO #define	RES_PRF_TRUNC	0x00008000
2785342d17fSHajimu UMEMOTO /*			0x00010000	*/
27959deaec5SRodney W. Grimes 
2805342d17fSHajimu UMEMOTO /* Things involving an internal (static) resolver context. */
2815342d17fSHajimu UMEMOTO __BEGIN_DECLS
2825342d17fSHajimu UMEMOTO extern struct __res_state *__res_state(void);
2835342d17fSHajimu UMEMOTO __END_DECLS
2845342d17fSHajimu UMEMOTO #define _res (*__res_state())
2851363f04cSPaul Traina 
2865342d17fSHajimu UMEMOTO #ifndef __BIND_NOSTATIC
2875342d17fSHajimu UMEMOTO #define fp_nquery		__fp_nquery
2885342d17fSHajimu UMEMOTO #define fp_query		__fp_query
2895342d17fSHajimu UMEMOTO #define hostalias		__hostalias
2905342d17fSHajimu UMEMOTO #define p_query			__p_query
2915342d17fSHajimu UMEMOTO #define res_close		__res_close
2925342d17fSHajimu UMEMOTO #define res_init		__res_init
2935342d17fSHajimu UMEMOTO #define res_isourserver		__res_isourserver
2945342d17fSHajimu UMEMOTO #define res_mkquery		__res_mkquery
2955342d17fSHajimu UMEMOTO #define res_opt			__res_opt
2965342d17fSHajimu UMEMOTO #define res_query		__res_query
2975342d17fSHajimu UMEMOTO #define res_querydomain		__res_querydomain
2985342d17fSHajimu UMEMOTO #define res_search		__res_search
2995342d17fSHajimu UMEMOTO #define res_send		__res_send
3005342d17fSHajimu UMEMOTO #define res_sendsigned		__res_sendsigned
301315d6d9cSPeter Wemm 
30233dee819SBrian Feldman __BEGIN_DECLS
3035342d17fSHajimu UMEMOTO void		fp_nquery(const u_char *, int, FILE *);
3045342d17fSHajimu UMEMOTO void		fp_query(const u_char *, FILE *);
3055342d17fSHajimu UMEMOTO const char *	hostalias(const char *);
3065342d17fSHajimu UMEMOTO void		p_query(const u_char *);
3075342d17fSHajimu UMEMOTO void		res_close(void);
3085342d17fSHajimu UMEMOTO int		res_init(void);
3095342d17fSHajimu UMEMOTO int		res_isourserver(const struct sockaddr_in *);
3105342d17fSHajimu UMEMOTO int		res_mkquery(int, const char *, int, int, const u_char *,
3115342d17fSHajimu UMEMOTO 				 int, const u_char *, u_char *, int);
3125342d17fSHajimu UMEMOTO int		res_opt(int, u_char *, int, int);
3135342d17fSHajimu UMEMOTO int		res_query(const char *, int, int, u_char *, int);
3145342d17fSHajimu UMEMOTO int		res_querydomain(const char *, const char *, int, int,
3155342d17fSHajimu UMEMOTO 				     u_char *, int);
3165342d17fSHajimu UMEMOTO int		res_search(const char *, int, int, u_char *, int);
3175342d17fSHajimu UMEMOTO int		res_send(const u_char *, int, u_char *, int);
3185342d17fSHajimu UMEMOTO int		res_sendsigned(const u_char *, int, ns_tsig_key *,
3195342d17fSHajimu UMEMOTO 				    u_char *, int);
32033dee819SBrian Feldman __END_DECLS
3215342d17fSHajimu UMEMOTO #endif
3227d56d374SYoshinobu Inoue 
3235342d17fSHajimu UMEMOTO #if !defined(SHARED_LIBBIND) || defined(LIB)
3245342d17fSHajimu UMEMOTO /*
3255342d17fSHajimu UMEMOTO  * If libbind is a shared object (well, DLL anyway)
3265342d17fSHajimu UMEMOTO  * these externs break the linker when resolv.h is
3275342d17fSHajimu UMEMOTO  * included by a lib client (like named)
3285342d17fSHajimu UMEMOTO  * Make them go away if a client is including this
3295342d17fSHajimu UMEMOTO  *
3305342d17fSHajimu UMEMOTO  */
3315342d17fSHajimu UMEMOTO extern const struct res_sym __p_key_syms[];
3325342d17fSHajimu UMEMOTO extern const struct res_sym __p_cert_syms[];
333315d6d9cSPeter Wemm extern const struct res_sym __p_class_syms[];
334315d6d9cSPeter Wemm extern const struct res_sym __p_type_syms[];
3355342d17fSHajimu UMEMOTO extern const struct res_sym __p_rcode_syms[];
3365342d17fSHajimu UMEMOTO #endif /* SHARED_LIBBIND */
33759deaec5SRodney W. Grimes 
338315d6d9cSPeter Wemm #define b64_ntop		__b64_ntop
339315d6d9cSPeter Wemm #define b64_pton		__b64_pton
3405342d17fSHajimu UMEMOTO #define dn_comp			__dn_comp
3415342d17fSHajimu UMEMOTO #define dn_count_labels		__dn_count_labels
3425342d17fSHajimu UMEMOTO #define dn_expand		__dn_expand
34359deaec5SRodney W. Grimes #define dn_skipname		__dn_skipname
344315d6d9cSPeter Wemm #define fp_resstat		__fp_resstat
3455342d17fSHajimu UMEMOTO #define loc_aton		__loc_aton
3465342d17fSHajimu UMEMOTO #define loc_ntoa		__loc_ntoa
3471363f04cSPaul Traina #define p_cdname		__p_cdname
3485342d17fSHajimu UMEMOTO #define p_cdnname		__p_cdnname
3495342d17fSHajimu UMEMOTO #define p_class			__p_class
3501363f04cSPaul Traina #define p_fqname		__p_fqname
3515342d17fSHajimu UMEMOTO #define p_fqnname		__p_fqnname
3521363f04cSPaul Traina #define p_option		__p_option
353315d6d9cSPeter Wemm #define p_secstodate		__p_secstodate
3545342d17fSHajimu UMEMOTO #define p_section		__p_section
3555342d17fSHajimu UMEMOTO #define p_time			__p_time
3565342d17fSHajimu UMEMOTO #define p_type			__p_type
3575342d17fSHajimu UMEMOTO #define p_rcode			__p_rcode
3585342d17fSHajimu UMEMOTO #define p_sockun		__p_sockun
3595342d17fSHajimu UMEMOTO #define putlong			__putlong
3605342d17fSHajimu UMEMOTO #define putshort		__putshort
3615342d17fSHajimu UMEMOTO #define res_dnok		__res_dnok
3625342d17fSHajimu UMEMOTO #if 0
3635342d17fSHajimu UMEMOTO #define res_findzonecut		__res_findzonecut
3645342d17fSHajimu UMEMOTO #endif
365d808369aSHajimu UMEMOTO #define res_findzonecut2	__res_findzonecut2
3665342d17fSHajimu UMEMOTO #define res_hnok		__res_hnok
3675342d17fSHajimu UMEMOTO #define res_hostalias		__res_hostalias
3685342d17fSHajimu UMEMOTO #define res_mailok		__res_mailok
369d58a9efdSPeter Wemm #define res_nameinquery		__res_nameinquery
3705342d17fSHajimu UMEMOTO #define res_nclose		__res_nclose
3715342d17fSHajimu UMEMOTO #define res_ninit		__res_ninit
3725342d17fSHajimu UMEMOTO #define res_nmkquery		__res_nmkquery
3735342d17fSHajimu UMEMOTO #define res_pquery		__res_pquery
3745342d17fSHajimu UMEMOTO #define res_nquery		__res_nquery
3755342d17fSHajimu UMEMOTO #define res_nquerydomain	__res_nquerydomain
3765342d17fSHajimu UMEMOTO #define res_nsearch		__res_nsearch
3775342d17fSHajimu UMEMOTO #define res_nsend		__res_nsend
3785342d17fSHajimu UMEMOTO #if 0
3795342d17fSHajimu UMEMOTO #define res_nsendsigned		__res_nsendsigned
3805342d17fSHajimu UMEMOTO #endif
3815342d17fSHajimu UMEMOTO #define res_nisourserver	__res_nisourserver
3825342d17fSHajimu UMEMOTO #define res_ownok		__res_ownok
383d58a9efdSPeter Wemm #define res_queriesmatch	__res_queriesmatch
3845342d17fSHajimu UMEMOTO #define res_randomid		__res_randomid
3855342d17fSHajimu UMEMOTO #define sym_ntop		__sym_ntop
3865342d17fSHajimu UMEMOTO #define sym_ntos		__sym_ntos
3875342d17fSHajimu UMEMOTO #define sym_ston		__sym_ston
3885342d17fSHajimu UMEMOTO #define res_nopt		__res_nopt
3895342d17fSHajimu UMEMOTO #define res_ndestroy		__res_ndestroy
3905342d17fSHajimu UMEMOTO #define	res_nametoclass		__res_nametoclass
3915342d17fSHajimu UMEMOTO #define	res_nametotype		__res_nametotype
3925342d17fSHajimu UMEMOTO #define	res_setservers		__res_setservers
3935342d17fSHajimu UMEMOTO #define	res_getservers		__res_getservers
3942d39807fSHajimu UMEMOTO #if 0
3955342d17fSHajimu UMEMOTO #define	res_buildprotolist	__res_buildprotolist
3965342d17fSHajimu UMEMOTO #define	res_destroyprotolist	__res_destroyprotolist
3975342d17fSHajimu UMEMOTO #define	res_destroyservicelist	__res_destroyservicelist
3985342d17fSHajimu UMEMOTO #define	res_get_nibblesuffix	__res_get_nibblesuffix
3995342d17fSHajimu UMEMOTO #define	res_get_nibblesuffix2	__res_get_nibblesuffix2
4005342d17fSHajimu UMEMOTO #endif
4015342d17fSHajimu UMEMOTO #define	res_ourserver_p		__res_ourserver_p
4022d39807fSHajimu UMEMOTO #if 0
4035342d17fSHajimu UMEMOTO #define	res_protocolname	__res_protocolname
4045342d17fSHajimu UMEMOTO #define	res_protocolnumber	__res_protocolnumber
4052d39807fSHajimu UMEMOTO #endif
4065342d17fSHajimu UMEMOTO #define	res_send_setqhook	__res_send_setqhook
4075342d17fSHajimu UMEMOTO #define	res_send_setrhook	__res_send_setrhook
4082d39807fSHajimu UMEMOTO #if 0
4095342d17fSHajimu UMEMOTO #define	res_servicename		__res_servicename
4105342d17fSHajimu UMEMOTO #define	res_servicenumber	__res_servicenumber
4112d39807fSHajimu UMEMOTO #endif
41259deaec5SRodney W. Grimes __BEGIN_DECLS
413bb28f3c2SWarner Losh int		res_hnok(const char *);
414bb28f3c2SWarner Losh int		res_ownok(const char *);
415bb28f3c2SWarner Losh int		res_mailok(const char *);
416bb28f3c2SWarner Losh int		res_dnok(const char *);
417bb28f3c2SWarner Losh int		sym_ston(const struct res_sym *, const char *, int *);
418bb28f3c2SWarner Losh const char *	sym_ntos(const struct res_sym *, int, int *);
419bb28f3c2SWarner Losh const char *	sym_ntop(const struct res_sym *, int, int *);
420bb28f3c2SWarner Losh int		b64_ntop(u_char const *, size_t, char *, size_t);
421bb28f3c2SWarner Losh int		b64_pton(char const *, u_char *, size_t);
422bb28f3c2SWarner Losh int		loc_aton(const char *, u_char *);
423bb28f3c2SWarner Losh const char *	loc_ntoa(const u_char *, char *);
424bb28f3c2SWarner Losh int		dn_skipname(const u_char *, const u_char *);
425bb28f3c2SWarner Losh void		putlong(u_int32_t, u_char *);
426bb28f3c2SWarner Losh void		putshort(u_int16_t, u_char *);
4275342d17fSHajimu UMEMOTO #ifndef __ultrix__
4285342d17fSHajimu UMEMOTO u_int16_t	_getshort(const u_char *);
4295342d17fSHajimu UMEMOTO u_int32_t	_getlong(const u_char *);
4305342d17fSHajimu UMEMOTO #endif
431bb28f3c2SWarner Losh const char *	p_class(int);
432bb28f3c2SWarner Losh const char *	p_time(u_int32_t);
433bb28f3c2SWarner Losh const char *	p_type(int);
4345342d17fSHajimu UMEMOTO const char *	p_rcode(int);
4355342d17fSHajimu UMEMOTO const char *	p_sockun(union res_sockaddr_union, char *, size_t);
436bb28f3c2SWarner Losh const u_char *	p_cdnname(const u_char *, const u_char *, int, FILE *);
437bb28f3c2SWarner Losh const u_char *	p_cdname(const u_char *, const u_char *, FILE *);
4385342d17fSHajimu UMEMOTO const u_char *	p_fqnname(const u_char *, const u_char *, int, char *, int);
439bb28f3c2SWarner Losh const u_char *	p_fqname(const u_char *, const u_char *, FILE *);
440bb28f3c2SWarner Losh const char *	p_option(u_long);
441bb28f3c2SWarner Losh char *		p_secstodate(u_long);
442bb28f3c2SWarner Losh int		dn_count_labels(const char *);
443bb28f3c2SWarner Losh int		dn_comp(const char *, u_char *, int, u_char **, u_char **);
444bb28f3c2SWarner Losh int		dn_expand(const u_char *, const u_char *, const u_char *,
445bb28f3c2SWarner Losh 			  char *, int);
446bb28f3c2SWarner Losh u_int		res_randomid(void);
4475342d17fSHajimu UMEMOTO int		res_nameinquery(const char *, int, int, const u_char *,
4485342d17fSHajimu UMEMOTO 				const u_char *);
449bb28f3c2SWarner Losh int		res_queriesmatch(const u_char *, const u_char *,
450bb28f3c2SWarner Losh 				 const u_char *, const u_char *);
451bb28f3c2SWarner Losh const char *	p_section(int, int);
4525342d17fSHajimu UMEMOTO /* Things involving a resolver context. */
4535342d17fSHajimu UMEMOTO int		res_ninit(res_state);
4545342d17fSHajimu UMEMOTO int		res_nisourserver(const res_state, const struct sockaddr_in *);
4555342d17fSHajimu UMEMOTO void		fp_resstat(const res_state, FILE *);
4565342d17fSHajimu UMEMOTO void		res_pquery(const res_state, const u_char *, int, FILE *);
4575342d17fSHajimu UMEMOTO const char *	res_hostalias(const res_state, const char *, char *, size_t);
4585342d17fSHajimu UMEMOTO int		res_nquery(res_state, const char *, int, int, u_char *, int);
4595342d17fSHajimu UMEMOTO int		res_nsearch(res_state, const char *, int, int, u_char *, int);
4605342d17fSHajimu UMEMOTO int		res_nquerydomain(res_state, const char *, const char *,
4615342d17fSHajimu UMEMOTO 				 int, int, u_char *, int);
4625342d17fSHajimu UMEMOTO int		res_nmkquery(res_state, int, const char *, int, int,
4635342d17fSHajimu UMEMOTO 			     const u_char *, int, const u_char *,
4645342d17fSHajimu UMEMOTO 			     u_char *, int);
4655342d17fSHajimu UMEMOTO int		res_nsend(res_state, const u_char *, int, u_char *, int);
4665342d17fSHajimu UMEMOTO #if 0
4675342d17fSHajimu UMEMOTO int		res_nsendsigned(res_state, const u_char *, int,
4685342d17fSHajimu UMEMOTO 				ns_tsig_key *, u_char *, int);
4695342d17fSHajimu UMEMOTO int		res_findzonecut(res_state, const char *, ns_class, int,
4705342d17fSHajimu UMEMOTO 				char *, size_t, struct in_addr *, int);
471d808369aSHajimu UMEMOTO #endif
4725342d17fSHajimu UMEMOTO int		res_findzonecut2(res_state, const char *, ns_class, int,
4735342d17fSHajimu UMEMOTO 				 char *, size_t,
4745342d17fSHajimu UMEMOTO 				 union res_sockaddr_union *, int);
4755342d17fSHajimu UMEMOTO void		res_nclose(res_state);
4765342d17fSHajimu UMEMOTO int		res_nopt(res_state, int, u_char *, int, int);
4775342d17fSHajimu UMEMOTO void		res_send_setqhook(res_send_qhook);
4785342d17fSHajimu UMEMOTO void		res_send_setrhook(res_send_rhook);
4795342d17fSHajimu UMEMOTO int		__res_vinit(res_state, int);
4802d39807fSHajimu UMEMOTO #if 0
4815342d17fSHajimu UMEMOTO void		res_destroyservicelist(void);
4825342d17fSHajimu UMEMOTO const char *	res_servicename(u_int16_t, const char *);
4835342d17fSHajimu UMEMOTO const char *	res_protocolname(int);
4845342d17fSHajimu UMEMOTO void		res_destroyprotolist(void);
4855342d17fSHajimu UMEMOTO void		res_buildprotolist(void);
4865342d17fSHajimu UMEMOTO const char *	res_get_nibblesuffix(res_state);
4875342d17fSHajimu UMEMOTO const char *	res_get_nibblesuffix2(res_state);
4885342d17fSHajimu UMEMOTO #endif
4895342d17fSHajimu UMEMOTO void		res_ndestroy(res_state);
4905342d17fSHajimu UMEMOTO u_int16_t	res_nametoclass(const char *, int *);
4915342d17fSHajimu UMEMOTO u_int16_t	res_nametotype(const char *, int *);
4925342d17fSHajimu UMEMOTO void		res_setservers(res_state, const union res_sockaddr_union *,
4935342d17fSHajimu UMEMOTO 			       int);
4945342d17fSHajimu UMEMOTO int		res_getservers(res_state, union res_sockaddr_union *, int);
49559deaec5SRodney W. Grimes __END_DECLS
49659deaec5SRodney W. Grimes 
49759deaec5SRodney W. Grimes #endif /* !_RESOLV_H_ */
498dde4a85dSHajimu UMEMOTO /*! \file */
499