williamr@2: /*-
williamr@2:  * Copyright (c) 1983, 1987, 1989, 1993
williamr@2:  *	The Regents of the University of California.  All rights reserved.
williamr@2:  *
williamr@2:  * Redistribution and use in source and binary forms, with or without
williamr@2:  * modification, are permitted provided that the following conditions
williamr@2:  * are met:
williamr@2:  * 1. Redistributions of source code must retain the above copyright
williamr@2:  *    notice, this list of conditions and the following disclaimer.
williamr@2:  * 2. Redistributions in binary form must reproduce the above copyright
williamr@2:  *    notice, this list of conditions and the following disclaimer in the
williamr@2:  *    documentation and/or other materials provided with the distribution.
williamr@2:  * 4. Neither the name of the University nor the names of its contributors
williamr@2:  *    may be used to endorse or promote products derived from this software
williamr@2:  *    without specific prior written permission.
williamr@2:  *
williamr@2:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
williamr@2:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
williamr@2:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
williamr@2:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
williamr@2:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
williamr@2:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
williamr@2:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
williamr@2:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
williamr@2:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
williamr@2:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
williamr@2:  * SUCH DAMAGE.
williamr@2:  */
williamr@2: 
williamr@2: /*
williamr@2:  * Portions Copyright (c) 1996 by Internet Software Consortium.
williamr@2:  *
williamr@2:  * Permission to use, copy, modify, and distribute this software for any
williamr@2:  * purpose with or without fee is hereby granted, provided that the above
williamr@2:  * copyright notice and this permission notice appear in all copies.
williamr@2:  *
williamr@2:  * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
williamr@2:  * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
williamr@2:  * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
williamr@2:  * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
williamr@2:  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
williamr@2:  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
williamr@2:  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
williamr@2:  * SOFTWARE.
williamr@2:  * © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved.
williamr@2:  */
williamr@2: 
williamr@2: /*
williamr@2:  *	@(#)resolv.h	8.1 (Berkeley) 6/2/93
williamr@2:  *	From Id: resolv.h,v 8.12 1998/04/28 19:36:46 halley Exp $
williamr@2:  * $FreeBSD: src/include/resolv.h,v 1.26 2004/09/09 17:39:47 yar Exp $
williamr@2:  */
williamr@2: 
williamr@2: #ifndef _RESOLV_H_
williamr@2: #define	_RESOLV_H_
williamr@2: 
williamr@2: #include <sys/param.h>
williamr@2: #include <sys/types.h>
williamr@2: #include <sys/cdefs.h>
williamr@2: #include <sys/socket.h>
williamr@2: #include <stdio.h>
williamr@2: 
williamr@2: /*
williamr@2:  * Revision information.  This is the release date in YYYYMMDD format.
williamr@2:  * It can change every day so the right thing to do with it is use it
williamr@2:  * in preprocessor commands such as "#if (__RES > 19931104)".  Do not
williamr@2:  * compare for equality; rather, use it to determine whether your resolver
williamr@2:  * is new enough to contain a certain feature.
williamr@2:  */
williamr@2: 
williamr@2: #define	__RES	19960801
williamr@2: 
williamr@2: /*
williamr@2:  * Resolver configuration file.
williamr@2:  * Normally not present, but may contain the address of the
williamr@2:  * inital name server(s) to query and the domain search list.
williamr@2:  */
williamr@2: 
williamr@2: #ifndef _PATH_RESCONF
williamr@2: #define	_PATH_RESCONF        "/etc/resolv.conf"
williamr@2: #endif
williamr@2: 
williamr@2: /*
williamr@2:  * Global defines and variables for resolver stub.
williamr@2:  */
williamr@2: #define	MAXNS			3	/* max # name servers we'll track */
williamr@2: #define	MAXDFLSRCH		3	/* # default domain levels to try */
williamr@2: #define	MAXDNSRCH		6	/* max # domains in search path */
williamr@2: #define	LOCALDOMAINPARTS	2	/* min levels in name that is "local" */
williamr@2: 
williamr@2: #define	RES_TIMEOUT		5	/* min. seconds between retries */
williamr@2: #define	RES_DFLRETRY		4	/* retries per each name server */
williamr@2: #define	MAXRESOLVSORT		10	/* number of net to sort on */
williamr@2: #define	RES_MAXNDOTS		15	/* should reflect bit field size */
williamr@2: #define	RES_MAXRETRANS		30	/* only for resolv.conf/RES_OPTIONS */
williamr@2: #define	RES_MAXRETRY		5	/* only for resolv.conf/RES_OPTIONS */
williamr@2: 
williamr@2: struct __res_state {
williamr@2: 	int	retrans;	 	/* retransmition time interval */
williamr@2: 	int	retry;			/* number of times to retransmit */
williamr@2: 	u_long	options;		/* option flags - see below. */
williamr@2: 	int	nscount;		/* number of name servers */
williamr@2: 	struct sockaddr_in
williamr@2: 		nsaddr_list[MAXNS];	/* address of name server */
williamr@2: #define	nsaddr	nsaddr_list[0]		/* for backward compatibility */
williamr@2: 	u_short	id;			/* current message id */
williamr@2: 	char	*dnsrch[MAXDNSRCH+1];	/* components of domain to search */
williamr@2: 	char	defdname[256];		/* default domain (deprecated) */
williamr@2: 	u_long	pfcode;			/* RES_PRF_ flags - see below. */
williamr@2: 	unsigned ndots:4;		/* threshold for initial abs. query */
williamr@2: 	unsigned nsort:4;		/* number of elements in sort_list[] */
williamr@2: 	char	unused[3];
williamr@2: 	struct {
williamr@2: 		struct in_addr	addr;
williamr@2: 		u_int32_t	mask;
williamr@2: 	} sort_list[MAXRESOLVSORT];
williamr@2: 	char	pad[72];		/* on an i386 this means 512b total */
williamr@2: };
williamr@2: 
williamr@2: /* for INET6 */
williamr@2: /*
williamr@2:  * replacement of __res_state, separated to keep binary compatibility.
williamr@2:  */
williamr@2: struct __res_state_ext {
williamr@2: 	struct sockaddr_storage nsaddr_list[MAXNS];
williamr@2: 	struct {
williamr@2: 		int	af;		/* address family for addr, mask */
williamr@2: 		union {
williamr@2: 			struct	in_addr ina;
williamr@2: 			struct	in6_addr in6a;
williamr@2: 		} addr, mask;
williamr@2: 	} sort_list[MAXRESOLVSORT];
williamr@2: };
williamr@2: 
williamr@2: /*
williamr@2:  * Resolver options (keep these in synch with res_debug.c, please)
williamr@2:  */
williamr@2: #define RES_INIT	0x00000001	/* address initialized */
williamr@2: #define RES_DEBUG	0x00000002	/* print debug messages */
williamr@2: #define RES_AAONLY	0x00000004	/* authoritative answers only (!IMPL)*/
williamr@2: #define RES_USEVC	0x00000008	/* use virtual circuit */
williamr@2: #define RES_PRIMARY	0x00000010	/* query primary server only (!IMPL) */
williamr@2: #define RES_IGNTC	0x00000020	/* ignore truncation errors */
williamr@2: #define RES_RECURSE	0x00000040	/* recursion desired */
williamr@2: #define RES_DEFNAMES	0x00000080	/* use default domain name */
williamr@2: #define RES_STAYOPEN	0x00000100	/* Keep TCP socket open */
williamr@2: #define RES_DNSRCH	0x00000200	/* search up local domain tree */
williamr@2: #define	RES_INSECURE1	0x00000400	/* type 1 security disabled */
williamr@2: #define	RES_INSECURE2	0x00000800	/* type 2 security disabled */
williamr@2: #define	RES_NOALIASES	0x00001000	/* shuts off HOSTALIASES feature */
williamr@2: #define	RES_USE_INET6	0x00002000	/* use/map IPv6 in gethostbyname() */
williamr@2: #define	RES_NOTLDQUERY	0x00004000	/* Don't query TLD names */
williamr@2: /* KAME extensions: use higher bit to avoid conflict with ISC use */
williamr@2: #define	RES_USE_EDNS0	0x40000000	/* use EDNS0 */
williamr@2: 
williamr@2: #define RES_DEFAULT	(RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
williamr@2: 
williamr@2: /*
williamr@2:  * Resolver "pfcode" values.  Used by dig.
williamr@2:  */
williamr@2: #define	RES_PRF_STATS	0x00000001
williamr@2: #define	RES_PRF_UPDATE	0x00000002
williamr@2: #define	RES_PRF_CLASS   0x00000004
williamr@2: #define	RES_PRF_CMD	0x00000008
williamr@2: #define	RES_PRF_QUES	0x00000010
williamr@2: #define	RES_PRF_ANS	0x00000020
williamr@2: #define	RES_PRF_AUTH	0x00000040
williamr@2: #define	RES_PRF_ADD	0x00000080
williamr@2: #define	RES_PRF_HEAD1	0x00000100
williamr@2: #define	RES_PRF_HEAD2	0x00000200
williamr@2: #define	RES_PRF_TTLID	0x00000400
williamr@2: #define	RES_PRF_HEADX	0x00000800
williamr@2: #define	RES_PRF_QUERY	0x00001000
williamr@2: #define	RES_PRF_REPLY	0x00002000
williamr@2: #define	RES_PRF_INIT    0x00004000
williamr@2: /*			0x00008000	*/
williamr@2: 
williamr@2: typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
williamr@2: 	res_sendhookact;
williamr@2: 
williamr@2: typedef res_sendhookact (*res_send_qhook)(struct sockaddr * const *ns,
williamr@2: 					  const u_char **query,
williamr@2: 					  int *querylen,
williamr@2: 					  u_char *ans,
williamr@2: 					  int anssiz,
williamr@2: 					  int *resplen);
williamr@2: 
williamr@2: typedef res_sendhookact (*res_send_rhook)(const struct sockaddr *ns,
williamr@2: 					  const u_char *query,
williamr@2: 					  int querylen,
williamr@2: 					  u_char *ans,
williamr@2: 					  int anssiz,
williamr@2: 					  int *resplen);
williamr@2: 
williamr@2: struct res_sym {
williamr@2: 	int	number;		/* Identifying number, like T_MX */
williamr@2: 	char *	name;		/* Its symbolic name, like "MX" */
williamr@2: 	char *	humanname;	/* Its fun name, like "mail exchanger" */
williamr@2: };
williamr@2: 
williamr@2: __BEGIN_DECLS
williamr@2: extern struct __res_state *___res(void);
williamr@2: extern struct __res_state_ext *___res_ext(void);
williamr@2: __END_DECLS
williamr@2: #define	_res		(*___res())
williamr@2: #define	_res_ext	(*___res_ext())
williamr@2: /* for INET6 */
williamr@2: extern struct __res_state_ext _res_ext;
williamr@2: 
williamr@2: extern const struct res_sym __p_class_syms[];
williamr@2: extern const struct res_sym __p_type_syms[];
williamr@2: 
williamr@2: /* Private routines shared between libc/net, named, nslookup and others. */
williamr@2: #define	res_hnok	__res_hnok
williamr@2: #define	res_ownok	__res_ownok
williamr@2: #define	res_mailok	__res_mailok
williamr@2: #define	res_dnok	__res_dnok
williamr@2: #define	sym_ston	__sym_ston
williamr@2: #define	sym_ntos	__sym_ntos
williamr@2: #define	sym_ntop	__sym_ntop
williamr@2: #define	b64_ntop	__b64_ntop
williamr@2: #define	b64_pton	__b64_pton
williamr@2: #define	loc_ntoa	__loc_ntoa
williamr@2: #define	loc_aton	__loc_aton
williamr@2: #define	fp_resstat	__fp_resstat
williamr@2: #define	p_query		__p_query
williamr@2: #define	dn_skipname	__dn_skipname
williamr@2: #define	fp_resstat	__fp_resstat
williamr@2: #define	fp_query	__fp_query
williamr@2: #define	fp_nquery	__fp_nquery
williamr@2: #define	hostalias	__hostalias
williamr@2: #define	putlong		__putlong
williamr@2: #define	putshort	__putshort
williamr@2: #define	p_class		__p_class
williamr@2: #define	p_time		__p_time
williamr@2: #define	p_type		__p_type
williamr@2: #define	p_query		__p_query
williamr@2: #define	p_cdnname	__p_cdnname
williamr@2: #define	p_section	__p_section
williamr@2: #define	p_cdname	__p_cdname
williamr@2: #define	p_fqnname	__p_fqnname
williamr@2: #define	p_fqname	__p_fqname
williamr@2: #define	p_option	__p_option
williamr@2: #define	p_secstodate	__p_secstodate
williamr@2: #define	dn_count_labels	__dn_count_labels
williamr@2: #define	dn_comp		__dn_comp
williamr@2: #define	dn_expand	__dn_expand
williamr@2: #define	res_init	__res_init
williamr@2: #define	res_randomid	__res_randomid
williamr@2: #define	res_query	__res_query
williamr@2: #define	res_search	__res_search
williamr@2: #define	res_querydomain	__res_querydomain
williamr@2: #define	res_mkquery	__res_mkquery
williamr@2: #define	res_send	__res_send
williamr@2: #define	res_isourserver	__res_isourserver
williamr@2: #define	res_nameinquery	__res_nameinquery
williamr@2: #define	res_queriesmatch __res_queriesmatch
williamr@2: #define	res_close	__res_close
williamr@2: #define	res_opt		__res_opt
williamr@2: #define	res_mkupdate	__res_mkupdate
williamr@2: #define	res_mkupdrec	__res_mkupdrec
williamr@2: #define	res_freeupdrec	__res_freeupdrec
williamr@2: 
williamr@2: 
williamr@2: #endif /* !_RESOLV_H_ */