xref: /freebsd/include/resolv.h (revision e45764721aedfa6460e1767664864bda9457c10e)
15342d17fSHajimu UMEMOTO /*
2046c3635SPedro F. Giffuni  * Portions Copyright (C) 2004, 2005, 2008, 2009  Internet Systems Consortium, Inc. ("ISC")
3046c3635SPedro F. Giffuni  * Portions Copyright (C) 1995-2003  Internet Software Consortium.
4046c3635SPedro F. Giffuni  *
5046c3635SPedro F. Giffuni  * Permission to use, copy, modify, and/or distribute this software for any
6046c3635SPedro F. Giffuni  * purpose with or without fee is hereby granted, provided that the above
7046c3635SPedro F. Giffuni  * copyright notice and this permission notice appear in all copies.
8046c3635SPedro F. Giffuni  *
9046c3635SPedro F. Giffuni  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10046c3635SPedro F. Giffuni  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11046c3635SPedro F. Giffuni  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12046c3635SPedro F. Giffuni  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13046c3635SPedro F. Giffuni  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14046c3635SPedro F. Giffuni  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15046c3635SPedro F. Giffuni  * PERFORMANCE OF THIS SOFTWARE.
16046c3635SPedro F. Giffuni  */
17046c3635SPedro F. Giffuni 
18046c3635SPedro F. Giffuni /*
195342d17fSHajimu UMEMOTO  * Copyright (c) 1983, 1987, 1989
2059deaec5SRodney W. Grimes  *    The Regents of the University of California.  All rights reserved.
2159deaec5SRodney W. Grimes  *
2259deaec5SRodney W. Grimes  * Redistribution and use in source and binary forms, with or without
2359deaec5SRodney W. Grimes  * modification, are permitted provided that the following conditions
2459deaec5SRodney W. Grimes  * are met:
2559deaec5SRodney W. Grimes  * 1. Redistributions of source code must retain the above copyright
2659deaec5SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer.
2759deaec5SRodney W. Grimes  * 2. Redistributions in binary form must reproduce the above copyright
2859deaec5SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer in the
2959deaec5SRodney W. Grimes  *    documentation and/or other materials provided with the distribution.
30f2556687SWarner Losh  * 3. Neither the name of the University nor the names of its contributors
3159deaec5SRodney W. Grimes  *    may be used to endorse or promote products derived from this software
3259deaec5SRodney W. Grimes  *    without specific prior written permission.
3359deaec5SRodney W. Grimes  *
3459deaec5SRodney W. Grimes  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
3559deaec5SRodney W. Grimes  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
3659deaec5SRodney W. Grimes  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
3759deaec5SRodney W. Grimes  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
3859deaec5SRodney W. Grimes  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
3959deaec5SRodney W. Grimes  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4059deaec5SRodney W. Grimes  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4159deaec5SRodney W. Grimes  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4259deaec5SRodney W. Grimes  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4359deaec5SRodney W. Grimes  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4459deaec5SRodney W. Grimes  * SUCH DAMAGE.
450160f9c0SPeter Wemm  */
460160f9c0SPeter Wemm 
47dde4a85dSHajimu UMEMOTO /*%
481363f04cSPaul Traina  *	@(#)resolv.h	8.1 (Berkeley) 6/2/93
49046c3635SPedro F. Giffuni  *	$Id: resolv.h,v 1.30 2009/03/03 01:52:48 each Exp $
50a4add9a9SPeter Wemm  * $FreeBSD$
5159deaec5SRodney W. Grimes  */
5259deaec5SRodney W. Grimes 
5359deaec5SRodney W. Grimes #ifndef _RESOLV_H_
5459deaec5SRodney W. Grimes #define	_RESOLV_H_
5559deaec5SRodney W. Grimes 
561363f04cSPaul Traina #include <sys/param.h>
5759deaec5SRodney W. Grimes #include <sys/types.h>
581363f04cSPaul Traina #include <sys/cdefs.h>
597d56d374SYoshinobu Inoue #include <sys/socket.h>
601363f04cSPaul Traina #include <stdio.h>
615342d17fSHajimu UMEMOTO #include <arpa/nameser.h>
621363f04cSPaul Traina 
63dde4a85dSHajimu UMEMOTO /*%
64315d6d9cSPeter Wemm  * Revision information.  This is the release date in YYYYMMDD format.
65315d6d9cSPeter Wemm  * It can change every day so the right thing to do with it is use it
66315d6d9cSPeter Wemm  * in preprocessor commands such as "#if (__RES > 19931104)".  Do not
671363f04cSPaul Traina  * compare for equality; rather, use it to determine whether your resolver
681363f04cSPaul Traina  * is new enough to contain a certain feature.
691363f04cSPaul Traina  */
701363f04cSPaul Traina 
71046c3635SPedro F. Giffuni #define	__RES	20090302
725342d17fSHajimu UMEMOTO 
73dde4a85dSHajimu UMEMOTO /*%
745342d17fSHajimu UMEMOTO  * This used to be defined in res_query.c, now it's in herror.c.
755342d17fSHajimu UMEMOTO  * [XXX no it's not.  It's in irs/irs_data.c]
765342d17fSHajimu UMEMOTO  * It was
775342d17fSHajimu UMEMOTO  * never extern'd by any *.h file before it was placed here.  For thread
785342d17fSHajimu UMEMOTO  * aware programs, the last h_errno value set is stored in res->h_errno.
795342d17fSHajimu UMEMOTO  *
805342d17fSHajimu UMEMOTO  * XXX:	There doesn't seem to be a good reason for exposing RES_SET_H_ERRNO
815342d17fSHajimu UMEMOTO  *	(and __h_errno_set) to the public via <resolv.h>.
825342d17fSHajimu UMEMOTO  * XXX:	__h_errno_set is really part of IRS, not part of the resolver.
835342d17fSHajimu UMEMOTO  *	If somebody wants to build and use a resolver that doesn't use IRS,
845342d17fSHajimu UMEMOTO  *	what do they do?  Perhaps something like
855342d17fSHajimu UMEMOTO  *		#ifdef WANT_IRS
865342d17fSHajimu UMEMOTO  *		# define RES_SET_H_ERRNO(r,x) __h_errno_set(r,x)
875342d17fSHajimu UMEMOTO  *		#else
885342d17fSHajimu UMEMOTO  *		# define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x))
895342d17fSHajimu UMEMOTO  *		#endif
905342d17fSHajimu UMEMOTO  */
915342d17fSHajimu UMEMOTO 
925342d17fSHajimu UMEMOTO #define RES_SET_H_ERRNO(r,x) __h_errno_set(r,x)
93dde4a85dSHajimu UMEMOTO struct __res_state; /*%< forward */
945342d17fSHajimu UMEMOTO __BEGIN_DECLS
955342d17fSHajimu UMEMOTO void __h_errno_set(struct __res_state *, int);
965342d17fSHajimu UMEMOTO __END_DECLS
971363f04cSPaul Traina 
98dde4a85dSHajimu UMEMOTO /*%
9959deaec5SRodney W. Grimes  * Resolver configuration file.
10059deaec5SRodney W. Grimes  * Normally not present, but may contain the address of the
1015342d17fSHajimu UMEMOTO  * initial name server(s) to query and the domain search list.
10259deaec5SRodney W. Grimes  */
10359deaec5SRodney W. Grimes 
10459deaec5SRodney W. Grimes #ifndef _PATH_RESCONF
10559deaec5SRodney W. Grimes #define	_PATH_RESCONF        "/etc/resolv.conf"
10659deaec5SRodney W. Grimes #endif
10759deaec5SRodney W. Grimes 
1085342d17fSHajimu UMEMOTO typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
1095342d17fSHajimu UMEMOTO 	res_sendhookact;
1105342d17fSHajimu UMEMOTO 
1115342d17fSHajimu UMEMOTO typedef res_sendhookact (*res_send_qhook)(struct sockaddr * const *,
1125342d17fSHajimu UMEMOTO 					  const u_char **, int *,
1135342d17fSHajimu UMEMOTO 					  u_char *, int, int *);
1145342d17fSHajimu UMEMOTO 
1155342d17fSHajimu UMEMOTO typedef res_sendhookact (*res_send_rhook)(const struct sockaddr *,
1165342d17fSHajimu UMEMOTO 					  const u_char *, int, u_char *,
1175342d17fSHajimu UMEMOTO 					  int, int *);
1185342d17fSHajimu UMEMOTO 
1195342d17fSHajimu UMEMOTO struct res_sym {
120dde4a85dSHajimu UMEMOTO 	int		number;	   /*%< Identifying number, like T_MX */
121dde4a85dSHajimu UMEMOTO 	const char *	name;	   /*%< Its symbolic name, like "MX" */
122dde4a85dSHajimu UMEMOTO 	const char *	humanname; /*%< Its fun name, like "mail exchanger" */
1235342d17fSHajimu UMEMOTO };
1245342d17fSHajimu UMEMOTO 
125dde4a85dSHajimu UMEMOTO /*%
12659deaec5SRodney W. Grimes  * Global defines and variables for resolver stub.
12759deaec5SRodney W. Grimes  */
128dde4a85dSHajimu UMEMOTO #define	MAXNS			3	/*%< max # name servers we'll track */
129dde4a85dSHajimu UMEMOTO #define	MAXDFLSRCH		3	/*%< # default domain levels to try */
130dde4a85dSHajimu UMEMOTO #define	MAXDNSRCH		6	/*%< max # domains in search path */
131dde4a85dSHajimu UMEMOTO #define	LOCALDOMAINPARTS	2	/*%< min levels in name that is "local" */
132dde4a85dSHajimu UMEMOTO #define	RES_TIMEOUT		5	/*%< min. seconds between retries */
133dde4a85dSHajimu UMEMOTO #define	MAXRESOLVSORT		10	/*%< number of net to sort on */
134dde4a85dSHajimu UMEMOTO #define	RES_MAXNDOTS		15	/*%< should reflect bit field size */
135dde4a85dSHajimu UMEMOTO #define	RES_MAXRETRANS		30	/*%< only for resolv.conf/RES_OPTIONS */
136dde4a85dSHajimu UMEMOTO #define	RES_MAXRETRY		5	/*%< only for resolv.conf/RES_OPTIONS */
137dde4a85dSHajimu UMEMOTO #define	RES_DFLRETRY		2	/*%< Default #/tries. */
138dde4a85dSHajimu UMEMOTO #define	RES_MAXTIME		65535	/*%< Infinity, in milliseconds. */
1395342d17fSHajimu UMEMOTO struct __res_state_ext;
14059deaec5SRodney W. Grimes 
14159deaec5SRodney W. Grimes struct __res_state {
142dde4a85dSHajimu UMEMOTO 	int	retrans;	 	/*%< retransmission time interval */
143dde4a85dSHajimu UMEMOTO 	int	retry;			/*%< number of times to retransmit */
1445342d17fSHajimu UMEMOTO 	/*
1455342d17fSHajimu UMEMOTO 	 * XXX: If `sun' is defined, `options' and `pfcode' are
1465342d17fSHajimu UMEMOTO 	 * defined as u_int in original BIND9 distribution.  However,
1475342d17fSHajimu UMEMOTO 	 * it breaks binary backward compatibility against FreeBSD's
1485342d17fSHajimu UMEMOTO 	 * resolver.  So, we changed not to see `sun'.
1495342d17fSHajimu UMEMOTO 	 */
1505342d17fSHajimu UMEMOTO #if defined(sun) && 0
151dde4a85dSHajimu UMEMOTO 	u_int	options;		/*%< option flags - see below. */
1525342d17fSHajimu UMEMOTO #else
153dde4a85dSHajimu UMEMOTO 	u_long	options;		/*%< option flags - see below. */
1545342d17fSHajimu UMEMOTO #endif
155dde4a85dSHajimu UMEMOTO 	int	nscount;		/*%< number of name servers */
1561363f04cSPaul Traina 	struct sockaddr_in
157dde4a85dSHajimu UMEMOTO 		nsaddr_list[MAXNS];	/*%< address of name server */
158dde4a85dSHajimu UMEMOTO #define	nsaddr	nsaddr_list[0]		/*%< for backward compatibility */
159dde4a85dSHajimu UMEMOTO 	u_short	id;			/*%< current message id */
160dde4a85dSHajimu UMEMOTO 	char	*dnsrch[MAXDNSRCH+1];	/*%< components of domain to search */
161dde4a85dSHajimu UMEMOTO 	char	defdname[256];		/*%< default domain (deprecated) */
1625342d17fSHajimu UMEMOTO #if defined(sun) && 0
163dde4a85dSHajimu UMEMOTO 	u_int	pfcode;			/*%< RES_PRF_ flags - see below. */
1645342d17fSHajimu UMEMOTO #else
165dde4a85dSHajimu UMEMOTO 	u_long	pfcode;			/*%< RES_PRF_ flags - see below. */
1665342d17fSHajimu UMEMOTO #endif
167dde4a85dSHajimu UMEMOTO 	unsigned ndots:4;		/*%< threshold for initial abs. query */
168dde4a85dSHajimu UMEMOTO 	unsigned nsort:4;		/*%< number of elements in sort_list[] */
1691363f04cSPaul Traina 	char	unused[3];
1701363f04cSPaul Traina 	struct {
1711363f04cSPaul Traina 		struct in_addr	addr;
1721363f04cSPaul Traina 		u_int32_t	mask;
1731363f04cSPaul Traina 	} sort_list[MAXRESOLVSORT];
174dde4a85dSHajimu UMEMOTO 	res_send_qhook qhook;		/*%< query hook */
175dde4a85dSHajimu UMEMOTO 	res_send_rhook rhook;		/*%< response hook */
176dde4a85dSHajimu UMEMOTO 	int	res_h_errno;		/*%< last one set for this context */
177dde4a85dSHajimu UMEMOTO 	int	_vcsock;		/*%< PRIVATE: for res_send VC i/o */
178dde4a85dSHajimu UMEMOTO 	u_int	_flags;			/*%< PRIVATE: see below */
179dde4a85dSHajimu UMEMOTO 	u_int	_pad;			/*%< make _u 64 bit aligned */
1805342d17fSHajimu UMEMOTO 	union {
1815342d17fSHajimu UMEMOTO 		/* On an 32-bit arch this means 512b total. */
182*e4576472SHajimu UMEMOTO 		char	pad[72 - 4*sizeof (int) - 3*sizeof (void *)];
1835342d17fSHajimu UMEMOTO 		struct {
1845342d17fSHajimu UMEMOTO 			u_int16_t		nscount;
185dde4a85dSHajimu UMEMOTO 			u_int16_t		nstimes[MAXNS];	/*%< ms. */
1865342d17fSHajimu UMEMOTO 			int			nssocks[MAXNS];
1872f98c0baSUlrich Spörlein 			struct __res_state_ext *ext;	/*%< extension for IPv6 */
1885342d17fSHajimu UMEMOTO 		} _ext;
1895342d17fSHajimu UMEMOTO 	} _u;
190*e4576472SHajimu UMEMOTO 	u_char	*_rnd;			/*%< PRIVATE: random state */
19159deaec5SRodney W. Grimes };
19259deaec5SRodney W. Grimes 
1935342d17fSHajimu UMEMOTO typedef struct __res_state *res_state;
1945342d17fSHajimu UMEMOTO 
1955342d17fSHajimu UMEMOTO union res_sockaddr_union {
1965342d17fSHajimu UMEMOTO 	struct sockaddr_in	sin;
1975342d17fSHajimu UMEMOTO #ifdef IN6ADDR_ANY_INIT
1985342d17fSHajimu UMEMOTO 	struct sockaddr_in6	sin6;
1995342d17fSHajimu UMEMOTO #endif
2005342d17fSHajimu UMEMOTO #ifdef ISC_ALIGN64
201dde4a85dSHajimu UMEMOTO 	int64_t			__align64;	/*%< 64bit alignment */
2025342d17fSHajimu UMEMOTO #else
203dde4a85dSHajimu UMEMOTO 	int32_t			__align32;	/*%< 32bit alignment */
2045342d17fSHajimu UMEMOTO #endif
205dde4a85dSHajimu UMEMOTO 	char			__space[128];   /*%< max size */
2067d56d374SYoshinobu Inoue };
2077d56d374SYoshinobu Inoue 
208dde4a85dSHajimu UMEMOTO /*%
2095342d17fSHajimu UMEMOTO  * Resolver flags (used to be discrete per-module statics ints).
2105342d17fSHajimu UMEMOTO  */
211dde4a85dSHajimu UMEMOTO #define	RES_F_VC	0x00000001	/*%< socket is TCP */
212dde4a85dSHajimu UMEMOTO #define	RES_F_CONN	0x00000002	/*%< socket is connected */
213dde4a85dSHajimu UMEMOTO #define	RES_F_EDNS0ERR	0x00000004	/*%< EDNS0 caused errors */
214dde4a85dSHajimu UMEMOTO #define	RES_F__UNUSED	0x00000008	/*%< (unused) */
215dde4a85dSHajimu UMEMOTO #define	RES_F_LASTMASK	0x000000F0	/*%< ordinal server of last res_nsend */
216dde4a85dSHajimu UMEMOTO #define	RES_F_LASTSHIFT	4		/*%< bit position of LASTMASK "flag" */
2175342d17fSHajimu UMEMOTO #define	RES_GETLAST(res) (((res)._flags & RES_F_LASTMASK) >> RES_F_LASTSHIFT)
2185342d17fSHajimu UMEMOTO 
2195342d17fSHajimu UMEMOTO /* res_findzonecut2() options */
220dde4a85dSHajimu UMEMOTO #define	RES_EXHAUSTIVE	0x00000001	/*%< always do all queries */
221dde4a85dSHajimu UMEMOTO #define	RES_IPV4ONLY	0x00000002	/*%< IPv4 only */
222dde4a85dSHajimu UMEMOTO #define	RES_IPV6ONLY	0x00000004	/*%< IPv6 only */
2235342d17fSHajimu UMEMOTO 
224dde4a85dSHajimu UMEMOTO /*%
22559deaec5SRodney W. Grimes  * Resolver options (keep these in synch with res_debug.c, please)
22659deaec5SRodney W. Grimes  */
227dde4a85dSHajimu UMEMOTO #define RES_INIT	0x00000001	/*%< address initialized */
228dde4a85dSHajimu UMEMOTO #define RES_DEBUG	0x00000002	/*%< print debug messages */
229dde4a85dSHajimu UMEMOTO #define RES_AAONLY	0x00000004	/*%< authoritative answers only (!IMPL)*/
230dde4a85dSHajimu UMEMOTO #define RES_USEVC	0x00000008	/*%< use virtual circuit */
231dde4a85dSHajimu UMEMOTO #define RES_PRIMARY	0x00000010	/*%< query primary server only (!IMPL) */
232dde4a85dSHajimu UMEMOTO #define RES_IGNTC	0x00000020	/*%< ignore truncation errors */
233dde4a85dSHajimu UMEMOTO #define RES_RECURSE	0x00000040	/*%< recursion desired */
234dde4a85dSHajimu UMEMOTO #define RES_DEFNAMES	0x00000080	/*%< use default domain name */
235dde4a85dSHajimu UMEMOTO #define RES_STAYOPEN	0x00000100	/*%< Keep TCP socket open */
236dde4a85dSHajimu UMEMOTO #define RES_DNSRCH	0x00000200	/*%< search up local domain tree */
237dde4a85dSHajimu UMEMOTO #define	RES_INSECURE1	0x00000400	/*%< type 1 security disabled */
238dde4a85dSHajimu UMEMOTO #define	RES_INSECURE2	0x00000800	/*%< type 2 security disabled */
239dde4a85dSHajimu UMEMOTO #define	RES_NOALIASES	0x00001000	/*%< shuts off HOSTALIASES feature */
240dde4a85dSHajimu UMEMOTO #define	RES_USE_INET6	0x00002000	/*%< use/map IPv6 in gethostbyname() */
241dde4a85dSHajimu UMEMOTO #define RES_ROTATE	0x00004000	/*%< rotate ns list after each query */
242dde4a85dSHajimu UMEMOTO #define	RES_NOCHECKNAME	0x00008000	/*%< do not check names for sanity. */
243dde4a85dSHajimu UMEMOTO #define	RES_KEEPTSIG	0x00010000	/*%< do not strip TSIG records */
244dde4a85dSHajimu UMEMOTO #define	RES_BLAST	0x00020000	/*%< blast all recursive servers */
24554ebdd63SHajimu UMEMOTO #define RES_NSID	0x00040000      /*%< request name server ID */
246dde4a85dSHajimu UMEMOTO #define RES_NOTLDQUERY	0x00100000	/*%< don't unqualified name as a tld */
247dde4a85dSHajimu UMEMOTO #define RES_USE_DNSSEC	0x00200000	/*%< use DNSSEC using OK bit in OPT */
2485342d17fSHajimu UMEMOTO /* #define RES_DEBUG2	0x00400000 */	/* nslookup internal */
249ce6282dbSHajimu UMEMOTO /* KAME extensions: use higher bit to avoid conflict with ISC use */
250dde4a85dSHajimu UMEMOTO #define RES_USE_DNAME	0x10000000	/*%< use DNAME */
251dde4a85dSHajimu UMEMOTO #define RES_USE_EDNS0	0x40000000	/*%< use EDNS0 if configured */
252dde4a85dSHajimu UMEMOTO #define RES_NO_NIBBLE2	0x80000000	/*%< disable alternate nibble lookup */
25359deaec5SRodney W. Grimes 
2545342d17fSHajimu UMEMOTO #define RES_DEFAULT	(RES_RECURSE | RES_DEFNAMES | \
2555342d17fSHajimu UMEMOTO 			 RES_DNSRCH | RES_NO_NIBBLE2)
25659deaec5SRodney W. Grimes 
257dde4a85dSHajimu UMEMOTO /*%
25859deaec5SRodney W. Grimes  * Resolver "pfcode" values.  Used by dig.
25959deaec5SRodney W. Grimes  */
2601363f04cSPaul Traina #define	RES_PRF_STATS	0x00000001
2610160f9c0SPeter Wemm #define	RES_PRF_UPDATE	0x00000002
2621363f04cSPaul Traina #define	RES_PRF_CLASS   0x00000004
2631363f04cSPaul Traina #define	RES_PRF_CMD	0x00000008
2641363f04cSPaul Traina #define	RES_PRF_QUES	0x00000010
2651363f04cSPaul Traina #define	RES_PRF_ANS	0x00000020
2661363f04cSPaul Traina #define	RES_PRF_AUTH	0x00000040
2671363f04cSPaul Traina #define	RES_PRF_ADD	0x00000080
2681363f04cSPaul Traina #define	RES_PRF_HEAD1	0x00000100
2691363f04cSPaul Traina #define	RES_PRF_HEAD2	0x00000200
2701363f04cSPaul Traina #define	RES_PRF_TTLID	0x00000400
2711363f04cSPaul Traina #define	RES_PRF_HEADX	0x00000800
2721363f04cSPaul Traina #define	RES_PRF_QUERY	0x00001000
2731363f04cSPaul Traina #define	RES_PRF_REPLY	0x00002000
2741363f04cSPaul Traina #define	RES_PRF_INIT	0x00004000
2755342d17fSHajimu UMEMOTO #define	RES_PRF_TRUNC	0x00008000
2765342d17fSHajimu UMEMOTO /*			0x00010000	*/
27759deaec5SRodney W. Grimes 
2785342d17fSHajimu UMEMOTO /* Things involving an internal (static) resolver context. */
2795342d17fSHajimu UMEMOTO __BEGIN_DECLS
2805342d17fSHajimu UMEMOTO extern struct __res_state *__res_state(void);
2815342d17fSHajimu UMEMOTO __END_DECLS
2825342d17fSHajimu UMEMOTO #define _res (*__res_state())
2831363f04cSPaul Traina 
2845342d17fSHajimu UMEMOTO #ifndef __BIND_NOSTATIC
2855342d17fSHajimu UMEMOTO #define fp_nquery		__fp_nquery
2865342d17fSHajimu UMEMOTO #define fp_query		__fp_query
2875342d17fSHajimu UMEMOTO #define hostalias		__hostalias
2885342d17fSHajimu UMEMOTO #define p_query			__p_query
2895342d17fSHajimu UMEMOTO #define res_close		__res_close
2905342d17fSHajimu UMEMOTO #define res_init		__res_init
2915342d17fSHajimu UMEMOTO #define res_isourserver		__res_isourserver
2925342d17fSHajimu UMEMOTO #define res_mkquery		__res_mkquery
2935342d17fSHajimu UMEMOTO #define res_opt			__res_opt
2945342d17fSHajimu UMEMOTO #define res_query		__res_query
2955342d17fSHajimu UMEMOTO #define res_querydomain		__res_querydomain
2965342d17fSHajimu UMEMOTO #define res_search		__res_search
2975342d17fSHajimu UMEMOTO #define res_send		__res_send
2985342d17fSHajimu UMEMOTO #define res_sendsigned		__res_sendsigned
299315d6d9cSPeter Wemm 
30033dee819SBrian Feldman __BEGIN_DECLS
3015342d17fSHajimu UMEMOTO void		fp_nquery(const u_char *, int, FILE *);
3025342d17fSHajimu UMEMOTO void		fp_query(const u_char *, FILE *);
3035342d17fSHajimu UMEMOTO const char *	hostalias(const char *);
3045342d17fSHajimu UMEMOTO void		p_query(const u_char *);
3055342d17fSHajimu UMEMOTO void		res_close(void);
3065342d17fSHajimu UMEMOTO int		res_init(void);
3075342d17fSHajimu UMEMOTO int		res_isourserver(const struct sockaddr_in *);
3085342d17fSHajimu UMEMOTO int		res_mkquery(int, const char *, int, int, const u_char *,
3095342d17fSHajimu UMEMOTO 				 int, const u_char *, u_char *, int);
3105342d17fSHajimu UMEMOTO int		res_opt(int, u_char *, int, int);
3115342d17fSHajimu UMEMOTO int		res_query(const char *, int, int, u_char *, int);
3125342d17fSHajimu UMEMOTO int		res_querydomain(const char *, const char *, int, int,
3135342d17fSHajimu UMEMOTO 				     u_char *, int);
3145342d17fSHajimu UMEMOTO int		res_search(const char *, int, int, u_char *, int);
3155342d17fSHajimu UMEMOTO int		res_send(const u_char *, int, u_char *, int);
3165342d17fSHajimu UMEMOTO int		res_sendsigned(const u_char *, int, ns_tsig_key *,
3175342d17fSHajimu UMEMOTO 				    u_char *, int);
31833dee819SBrian Feldman __END_DECLS
3195342d17fSHajimu UMEMOTO #endif
3207d56d374SYoshinobu Inoue 
3215342d17fSHajimu UMEMOTO #if !defined(SHARED_LIBBIND) || defined(LIB)
3225342d17fSHajimu UMEMOTO /*
3235342d17fSHajimu UMEMOTO  * If libbind is a shared object (well, DLL anyway)
3245342d17fSHajimu UMEMOTO  * these externs break the linker when resolv.h is
3255342d17fSHajimu UMEMOTO  * included by a lib client (like named)
3265342d17fSHajimu UMEMOTO  * Make them go away if a client is including this
3275342d17fSHajimu UMEMOTO  *
3285342d17fSHajimu UMEMOTO  */
3295342d17fSHajimu UMEMOTO extern const struct res_sym __p_key_syms[];
3305342d17fSHajimu UMEMOTO extern const struct res_sym __p_cert_syms[];
331315d6d9cSPeter Wemm extern const struct res_sym __p_class_syms[];
332315d6d9cSPeter Wemm extern const struct res_sym __p_type_syms[];
3335342d17fSHajimu UMEMOTO extern const struct res_sym __p_rcode_syms[];
3345342d17fSHajimu UMEMOTO #endif /* SHARED_LIBBIND */
33559deaec5SRodney W. Grimes 
336315d6d9cSPeter Wemm #define b64_ntop		__b64_ntop
337315d6d9cSPeter Wemm #define b64_pton		__b64_pton
3385342d17fSHajimu UMEMOTO #define dn_comp			__dn_comp
3395342d17fSHajimu UMEMOTO #define dn_count_labels		__dn_count_labels
3405342d17fSHajimu UMEMOTO #define dn_expand		__dn_expand
34159deaec5SRodney W. Grimes #define dn_skipname		__dn_skipname
342315d6d9cSPeter Wemm #define fp_resstat		__fp_resstat
3435342d17fSHajimu UMEMOTO #define loc_aton		__loc_aton
3445342d17fSHajimu UMEMOTO #define loc_ntoa		__loc_ntoa
3451363f04cSPaul Traina #define p_cdname		__p_cdname
3465342d17fSHajimu UMEMOTO #define p_cdnname		__p_cdnname
3475342d17fSHajimu UMEMOTO #define p_class			__p_class
3481363f04cSPaul Traina #define p_fqname		__p_fqname
3495342d17fSHajimu UMEMOTO #define p_fqnname		__p_fqnname
3501363f04cSPaul Traina #define p_option		__p_option
351315d6d9cSPeter Wemm #define p_secstodate		__p_secstodate
3525342d17fSHajimu UMEMOTO #define p_section		__p_section
3535342d17fSHajimu UMEMOTO #define p_time			__p_time
3545342d17fSHajimu UMEMOTO #define p_type			__p_type
3555342d17fSHajimu UMEMOTO #define p_rcode			__p_rcode
3565342d17fSHajimu UMEMOTO #define p_sockun		__p_sockun
3575342d17fSHajimu UMEMOTO #define putlong			__putlong
3585342d17fSHajimu UMEMOTO #define putshort		__putshort
3595342d17fSHajimu UMEMOTO #define res_dnok		__res_dnok
3605342d17fSHajimu UMEMOTO #if 0
3615342d17fSHajimu UMEMOTO #define res_findzonecut		__res_findzonecut
3625342d17fSHajimu UMEMOTO #endif
363d808369aSHajimu UMEMOTO #define res_findzonecut2	__res_findzonecut2
3645342d17fSHajimu UMEMOTO #define res_hnok		__res_hnok
3655342d17fSHajimu UMEMOTO #define res_hostalias		__res_hostalias
3665342d17fSHajimu UMEMOTO #define res_mailok		__res_mailok
367d58a9efdSPeter Wemm #define res_nameinquery		__res_nameinquery
3685342d17fSHajimu UMEMOTO #define res_nclose		__res_nclose
3695342d17fSHajimu UMEMOTO #define res_ninit		__res_ninit
3705342d17fSHajimu UMEMOTO #define res_nmkquery		__res_nmkquery
3715342d17fSHajimu UMEMOTO #define res_pquery		__res_pquery
3725342d17fSHajimu UMEMOTO #define res_nquery		__res_nquery
3735342d17fSHajimu UMEMOTO #define res_nquerydomain	__res_nquerydomain
3745342d17fSHajimu UMEMOTO #define res_nsearch		__res_nsearch
3755342d17fSHajimu UMEMOTO #define res_nsend		__res_nsend
3765342d17fSHajimu UMEMOTO #if 0
3775342d17fSHajimu UMEMOTO #define res_nsendsigned		__res_nsendsigned
3785342d17fSHajimu UMEMOTO #endif
3795342d17fSHajimu UMEMOTO #define res_nisourserver	__res_nisourserver
3805342d17fSHajimu UMEMOTO #define res_ownok		__res_ownok
381d58a9efdSPeter Wemm #define res_queriesmatch	__res_queriesmatch
382046c3635SPedro F. Giffuni #define res_rndinit		__res_rndinit
3835342d17fSHajimu UMEMOTO #define res_randomid		__res_randomid
384046c3635SPedro F. Giffuni #define res_nrandomid		__res_nrandomid
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
38954ebdd63SHajimu UMEMOTO #define res_nopt_rdata       	__res_nopt_rdata
3905342d17fSHajimu UMEMOTO #define res_ndestroy		__res_ndestroy
3915342d17fSHajimu UMEMOTO #define	res_nametoclass		__res_nametoclass
3925342d17fSHajimu UMEMOTO #define	res_nametotype		__res_nametotype
3935342d17fSHajimu UMEMOTO #define	res_setservers		__res_setservers
3945342d17fSHajimu UMEMOTO #define	res_getservers		__res_getservers
3952d39807fSHajimu UMEMOTO #if 0
3965342d17fSHajimu UMEMOTO #define	res_buildprotolist	__res_buildprotolist
3975342d17fSHajimu UMEMOTO #define	res_destroyprotolist	__res_destroyprotolist
3985342d17fSHajimu UMEMOTO #define	res_destroyservicelist	__res_destroyservicelist
3995342d17fSHajimu UMEMOTO #define	res_get_nibblesuffix	__res_get_nibblesuffix
4005342d17fSHajimu UMEMOTO #define	res_get_nibblesuffix2	__res_get_nibblesuffix2
4015342d17fSHajimu UMEMOTO #endif
4025342d17fSHajimu UMEMOTO #define	res_ourserver_p		__res_ourserver_p
4032d39807fSHajimu UMEMOTO #if 0
4045342d17fSHajimu UMEMOTO #define	res_protocolname	__res_protocolname
4055342d17fSHajimu UMEMOTO #define	res_protocolnumber	__res_protocolnumber
4062d39807fSHajimu UMEMOTO #endif
4075342d17fSHajimu UMEMOTO #define	res_send_setqhook	__res_send_setqhook
4085342d17fSHajimu UMEMOTO #define	res_send_setrhook	__res_send_setrhook
4092d39807fSHajimu UMEMOTO #if 0
4105342d17fSHajimu UMEMOTO #define	res_servicename		__res_servicename
4115342d17fSHajimu UMEMOTO #define	res_servicenumber	__res_servicenumber
4122d39807fSHajimu UMEMOTO #endif
41359deaec5SRodney W. Grimes __BEGIN_DECLS
414bb28f3c2SWarner Losh int		res_hnok(const char *);
415bb28f3c2SWarner Losh int		res_ownok(const char *);
416bb28f3c2SWarner Losh int		res_mailok(const char *);
417bb28f3c2SWarner Losh int		res_dnok(const char *);
418bb28f3c2SWarner Losh int		sym_ston(const struct res_sym *, const char *, int *);
419bb28f3c2SWarner Losh const char *	sym_ntos(const struct res_sym *, int, int *);
420bb28f3c2SWarner Losh const char *	sym_ntop(const struct res_sym *, int, int *);
421bb28f3c2SWarner Losh int		b64_ntop(u_char const *, size_t, char *, size_t);
422bb28f3c2SWarner Losh int		b64_pton(char const *, u_char *, size_t);
423bb28f3c2SWarner Losh int		loc_aton(const char *, u_char *);
424bb28f3c2SWarner Losh const char *	loc_ntoa(const u_char *, char *);
425bb28f3c2SWarner Losh int		dn_skipname(const u_char *, const u_char *);
426bb28f3c2SWarner Losh void		putlong(u_int32_t, u_char *);
427bb28f3c2SWarner Losh void		putshort(u_int16_t, u_char *);
4285342d17fSHajimu UMEMOTO #ifndef __ultrix__
4295342d17fSHajimu UMEMOTO u_int16_t	_getshort(const u_char *);
4305342d17fSHajimu UMEMOTO u_int32_t	_getlong(const u_char *);
4315342d17fSHajimu UMEMOTO #endif
432bb28f3c2SWarner Losh const char *	p_class(int);
433bb28f3c2SWarner Losh const char *	p_time(u_int32_t);
434bb28f3c2SWarner Losh const char *	p_type(int);
4355342d17fSHajimu UMEMOTO const char *	p_rcode(int);
4365342d17fSHajimu UMEMOTO const char *	p_sockun(union res_sockaddr_union, char *, size_t);
437bb28f3c2SWarner Losh const u_char *	p_cdnname(const u_char *, const u_char *, int, FILE *);
438bb28f3c2SWarner Losh const u_char *	p_cdname(const u_char *, const u_char *, FILE *);
4395342d17fSHajimu UMEMOTO const u_char *	p_fqnname(const u_char *, const u_char *, int, char *, int);
440bb28f3c2SWarner Losh const u_char *	p_fqname(const u_char *, const u_char *, FILE *);
441bb28f3c2SWarner Losh const char *	p_option(u_long);
442bb28f3c2SWarner Losh char *		p_secstodate(u_long);
443bb28f3c2SWarner Losh int		dn_count_labels(const char *);
444bb28f3c2SWarner Losh int		dn_comp(const char *, u_char *, int, u_char **, u_char **);
445bb28f3c2SWarner Losh int		dn_expand(const u_char *, const u_char *, const u_char *,
446bb28f3c2SWarner Losh 			  char *, int);
447*e4576472SHajimu UMEMOTO void		res_rndinit(res_state);
448bb28f3c2SWarner Losh u_int		res_randomid(void);
449*e4576472SHajimu UMEMOTO u_int		res_nrandomid(res_state);
4505342d17fSHajimu UMEMOTO int		res_nameinquery(const char *, int, int, const u_char *,
4515342d17fSHajimu UMEMOTO 				const u_char *);
452bb28f3c2SWarner Losh int		res_queriesmatch(const u_char *, const u_char *,
453bb28f3c2SWarner Losh 				 const u_char *, const u_char *);
454bb28f3c2SWarner Losh const char *	p_section(int, int);
4555342d17fSHajimu UMEMOTO /* Things involving a resolver context. */
4565342d17fSHajimu UMEMOTO int		res_ninit(res_state);
4575342d17fSHajimu UMEMOTO int		res_nisourserver(const res_state, const struct sockaddr_in *);
4585342d17fSHajimu UMEMOTO void		fp_resstat(const res_state, FILE *);
4595342d17fSHajimu UMEMOTO void		res_pquery(const res_state, const u_char *, int, FILE *);
4605342d17fSHajimu UMEMOTO const char *	res_hostalias(const res_state, const char *, char *, size_t);
4615342d17fSHajimu UMEMOTO int		res_nquery(res_state, const char *, int, int, u_char *, int);
4625342d17fSHajimu UMEMOTO int		res_nsearch(res_state, const char *, int, int, u_char *, int);
4635342d17fSHajimu UMEMOTO int		res_nquerydomain(res_state, const char *, const char *,
4645342d17fSHajimu UMEMOTO 				 int, int, u_char *, int);
4655342d17fSHajimu UMEMOTO int		res_nmkquery(res_state, int, const char *, int, int,
4665342d17fSHajimu UMEMOTO 			     const u_char *, int, const u_char *,
4675342d17fSHajimu UMEMOTO 			     u_char *, int);
4685342d17fSHajimu UMEMOTO int		res_nsend(res_state, const u_char *, int, u_char *, int);
4695342d17fSHajimu UMEMOTO #if 0
4705342d17fSHajimu UMEMOTO int		res_nsendsigned(res_state, const u_char *, int,
4715342d17fSHajimu UMEMOTO 				ns_tsig_key *, u_char *, int);
4725342d17fSHajimu UMEMOTO int		res_findzonecut(res_state, const char *, ns_class, int,
4735342d17fSHajimu UMEMOTO 				char *, size_t, struct in_addr *, int);
474d808369aSHajimu UMEMOTO #endif
4755342d17fSHajimu UMEMOTO int		res_findzonecut2(res_state, const char *, ns_class, int,
4765342d17fSHajimu UMEMOTO 				 char *, size_t,
4775342d17fSHajimu UMEMOTO 				 union res_sockaddr_union *, int);
4785342d17fSHajimu UMEMOTO void		res_nclose(res_state);
4795342d17fSHajimu UMEMOTO int		res_nopt(res_state, int, u_char *, int, int);
48054ebdd63SHajimu UMEMOTO int		res_nopt_rdata(res_state, int, u_char *, int, u_char *,
48154ebdd63SHajimu UMEMOTO 			       u_short, u_short, u_char *);
4825342d17fSHajimu UMEMOTO void		res_send_setqhook(res_send_qhook);
4835342d17fSHajimu UMEMOTO void		res_send_setrhook(res_send_rhook);
4845342d17fSHajimu UMEMOTO int		__res_vinit(res_state, int);
4852d39807fSHajimu UMEMOTO #if 0
4865342d17fSHajimu UMEMOTO void		res_destroyservicelist(void);
4875342d17fSHajimu UMEMOTO const char *	res_servicename(u_int16_t, const char *);
4885342d17fSHajimu UMEMOTO const char *	res_protocolname(int);
4895342d17fSHajimu UMEMOTO void		res_destroyprotolist(void);
4905342d17fSHajimu UMEMOTO void		res_buildprotolist(void);
4915342d17fSHajimu UMEMOTO const char *	res_get_nibblesuffix(res_state);
4925342d17fSHajimu UMEMOTO const char *	res_get_nibblesuffix2(res_state);
4935342d17fSHajimu UMEMOTO #endif
4945342d17fSHajimu UMEMOTO void		res_ndestroy(res_state);
4955342d17fSHajimu UMEMOTO u_int16_t	res_nametoclass(const char *, int *);
4965342d17fSHajimu UMEMOTO u_int16_t	res_nametotype(const char *, int *);
4975342d17fSHajimu UMEMOTO void		res_setservers(res_state, const union res_sockaddr_union *,
4985342d17fSHajimu UMEMOTO 			       int);
4995342d17fSHajimu UMEMOTO int		res_getservers(res_state, union res_sockaddr_union *, int);
50059deaec5SRodney W. Grimes __END_DECLS
50159deaec5SRodney W. Grimes 
50259deaec5SRodney W. Grimes #endif /* !_RESOLV_H_ */
503dde4a85dSHajimu UMEMOTO /*! \file */
504