OpenSolaris_b135/head/resolv.h
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T
* All Rights Reserved
*
* Portions of this source code were derived from Berkeley
* 4.3 BSD under license from the regents of the University of
* California.
*/
/*
* BIND 4.9.4:
*/
/*
* 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--
*
* End BIND 4.9.4
*/
/*
* Copyright (c) 1983, 1987, 1989
* 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) 1996-1999 by Internet Software Consortium.
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM 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.
*/
/*
* @(#)resolv.h 8.1 (Berkeley) 6/2/93
* $Id: resolv.h,v 8.52 2003/04/29 02:27:03 marka Exp $
*/
#ifndef _RESOLV_H_
#define _RESOLV_H_
#include <sys/param.h>
#include <stdio.h>
#include <arpa/nameser.h>
#include <sys/socket.h>
#ifdef __cplusplus
extern "C" {
#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 20090302
#define RES_SET_H_ERRNO(r, x) __h_errno_set(r, x)
struct __res_state; /* forward */
void __h_errno_set(struct __res_state *res, int err);
/*
* Resolver configuration file.
* Normally not present, but may contain the address of the
* initial name server(s) to query and the domain search list.
*/
#ifndef _PATH_RESCONF
#define _PATH_RESCONF "/etc/resolv.conf"
#endif
#ifdef __STDC__
#ifndef __P
#define __P(x) x
#endif
#else
#ifndef __P
#define __P(x) ()
#endif
#endif /* __STDC__ */
typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
res_sendhookact;
typedef res_sendhookact (*res_send_qhook)__P((struct sockaddr * const *ns,
const uchar_t **query,
int *querylen,
uchar_t *ans,
int anssiz,
int *resplen));
typedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr *ns,
const uchar_t *query,
int querylen,
uchar_t *ans,
int anssiz,
int *resplen));
struct res_sym {
int number; /* Identifying number, like T_MX */
const char *name; /* Its symbolic name, like "MX" */
const char *humanname; /* Its fun name, like "mail exchanger" */
};
/*
* Global defines and variables for resolver stub.
*/
/* ADDRSORT and MAXADDR retained for compatibility; not used */
#define ADDRSORT 1 /* enable the address-sorting option */
#define MAXADDR 10 /* max # addresses to sort by */
#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 */
#define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
#define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
#define RES_DFLRETRY 2 /* Default #/tries. */
#define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
struct __res_state_ext;
struct __res_state {
int retrans; /* retransmission time interval */
int retry; /* number of times to retransmit */
#ifdef __sun
uint_t options; /* option flags - see below. */
#else
ulong_t options; /* option flags - see below. */
#endif
int nscount; /* number of name servers */
struct sockaddr_in
nsaddr_list[MAXNS]; /* address of name server */
#define nsaddr nsaddr_list[0] /* for backward compatibility */
ushort_t id; /* current packet id */
char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
char defdname[256]; /* default domain (deprecated) */
#ifdef __sun
uint_t pfcode; /* RES_PRF_ flags - see below. */
#else
ulong_t pfcode; /* RES_PRF_ flags - see below. */
#endif
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;
unsigned int mask;
} sort_list[MAXRESOLVSORT];
res_send_qhook qhook; /* query hook */
res_send_rhook rhook; /* response hook */
int res_h_errno; /* last one set for this context */
int _vcsock; /* PRIVATE: for res_send VC i/o */
uint_t _flags; /* PRIVATE: see below */
uint_t _pad; /* make _u 64 bit aligned */
union {
/* On an 32-bit arch this means 512b total. */
char pad[72 - 4*sizeof (int) - 2*sizeof (void *)];
struct {
uint16_t nscount;
uint16_t nstimes[MAXNS]; /* ms. */
int nssocks[MAXNS];
struct __res_state_ext *ext; /* extention for IPv6 */
uchar_t _rnd[16]; /* PRIVATE: random state */
} _ext;
} _u;
};
typedef struct __res_state *res_state;
union res_sockaddr_union {
struct sockaddr_in sin;
#ifdef IN6ADDR_ANY_INIT
struct sockaddr_in6 sin6;
#endif
#ifdef ISC_ALIGN64
int64_t __align64; /* 64bit alignment */
#else
int32_t __align32; /* 32bit alignment */
#endif
char __space[128]; /* max size */
};
/*
* Resolver flags (used to be discrete per-module statics ints).
*/
#define RES_F_VC 0x00000001 /* socket is TCP */
#define RES_F_CONN 0x00000002 /* socket is connected */
#define RES_F_EDNS0ERR 0x00000004 /* EDNS0 caused errors */
#define RES_F__UNUSED 0x00000008 /* (unused) */
#define RES_F_LASTMASK 0x000000F0 /* ordinal server of last res_nsend */
#define RES_F_LASTSHIFT 4 /* bit position of LASTMASK "flag" */
#define RES_GETLAST(res) (((res)._flags & RES_F_LASTMASK) >> RES_F_LASTSHIFT)
/* res_findzonecut2() options */
#define RES_EXHAUSTIVE 0x00000001 /* always do all queries */
#define RES_IPV4ONLY 0x00000002 /* IPv4 only */
#define RES_IPV6ONLY 0x00000004 /* IPv6 only */
/*
* 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_ROTATE 0x00004000 /* rotate ns list after each query */
#define RES_NOCHECKNAME 0x00008000 /* do not check names for sanity. */
#define RES_KEEPTSIG 0x00010000 /* do not strip TSIG records */
#define RES_BLAST 0x00020000 /* blast all recursive servers */
#define RES_NO_NIBBLE 0x00040000 /* disable IPv6 nibble mode reverse */
#define RES_NO_BITSTRING 0x00080000 /* disable IPv6 bitstring mode revrse */
#define RES_NOTLDQUERY 0x00100000 /* don't unqualified name as a tld */
#define RES_USE_DNSSEC 0x00200000 /* use DNSSEC using OK bit in OPT */
/* KAME extensions: use higher bit to avoid conflict with ISC use */
#define RES_USE_DNAME 0x10000000 /* use DNAME */
#define RES_USE_EDNS0 0x40000000 /* use EDNS0 if configured */
#define RES_NO_NIBBLE2 0x80000000 /* disable alternate nibble lookup */
#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
/*
* Resolver "pfcode" values. Used by dig.
*/
#define RES_PRF_STATS 0x00000001
#define RES_PRF_UPDATE 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
#define RES_PRF_TRUNC 0x00008000
/* 0x00010000 */
/* Things involving an internal (static) resolver context. */
#ifdef _REENTRANT
extern struct __res_state *__res_state(void);
#define _res (*__res_state())
#else
#ifndef __BIND_NOSTATIC
extern struct __res_state _res;
#endif
#endif
#ifndef __BIND_NOSTATIC
void fp_nquery __P((const uchar_t *, int, FILE *));
void fp_query __P((const uchar_t *, FILE *));
const char *hostalias __P((const char *));
void p_query __P((const uchar_t *));
void res_close __P((void));
int res_init __P((void));
int res_isourserver __P((const struct sockaddr_in *));
int res_mkquery __P((int, const char *, int, int, const uchar_t *,
int, const uchar_t *, uchar_t *, int));
int res_query __P((const char *, int, int, uchar_t *, int));
int res_querydomain __P((const char *, const char *, int, int,
uchar_t *, int));
int res_search __P((const char *, int, int, uchar_t *, int));
int res_send __P((const uchar_t *, int, uchar_t *, int));
int res_sendsigned __P((const uchar_t *, int, ns_tsig_key *,
uchar_t *, int));
#endif /* __BIND_NOSTATIC */
extern const struct res_sym __p_key_syms[];
extern const struct res_sym __p_cert_syms[];
extern const struct res_sym __p_class_syms[];
extern const struct res_sym __p_type_syms[];
extern const struct res_sym __p_rcode_syms[];
int res_hnok __P((const char *));
int res_ownok __P((const char *));
int res_mailok __P((const char *));
int res_dnok __P((const char *));
int sym_ston __P((const struct res_sym *, const char *, int *));
const char *sym_ntos __P((const struct res_sym *, int, int *));
const char *sym_ntop __P((const struct res_sym *, int, int *));
int b64_ntop __P((uchar_t const *, size_t, char *, size_t));
int b64_pton __P((char const *, uchar_t *, size_t));
int loc_aton __P((const char *ascii, uchar_t *binary));
const char *loc_ntoa __P((const uchar_t *binary, char *ascii));
int dn_skipname __P((const uchar_t *, const uchar_t *));
void putlong __P((unsigned int, uchar_t *));
void putshort __P((unsigned short, uchar_t *));
const char *p_class __P((int));
const char *p_time __P((unsigned int));
const char *p_type __P((int));
const char *p_rcode __P((int));
const char *p_sockun __P((union res_sockaddr_union, char *, size_t));
const uchar_t *p_cdnname __P((const uchar_t *, const uchar_t *, int,
FILE *));
const uchar_t *p_cdname __P((const uchar_t *, const uchar_t *, FILE *));
const uchar_t *p_fqnname __P((const uchar_t *cp, const uchar_t *msg,
int, char *, int));
const uchar_t *p_fqname __P((const uchar_t *, const uchar_t *, FILE *));
const char *p_option __P((uint_t option));
char *p_secstodate __P((uint_t));
int dn_count_labels __P((const char *));
int dn_comp __P((const char *, uchar_t *, int,
uchar_t **, uchar_t **));
int dn_expand __P((const uchar_t *, const uchar_t *,
const uchar_t *, char *, int));
void res_rndinit __P((res_state));
uint_t res_randomid __P((void));
uint_t res_nrandomid __P((res_state));
int res_nameinquery __P((const char *, int, int,
const uchar_t *, const uchar_t *));
int res_queriesmatch __P((const uchar_t *, const uchar_t *,
const uchar_t *, const uchar_t *));
const char *p_section __P((int section, int opcode));
/* Things involving a resolver context. */
int res_ninit __P((res_state));
int res_nisourserver __P((const res_state,
const struct sockaddr_in *));
void fp_resstat __P((const res_state, FILE *));
void res_pquery __P((const res_state, const uchar_t *, int, FILE *));
const char *res_hostalias __P((const res_state, const char *,
char *, size_t));
int res_nquery __P((res_state,
const char *, int, int, uchar_t *, int));
int res_nsearch __P((res_state, const char *, int,
int, uchar_t *, int));
int res_nquerydomain __P((res_state,
const char *, const char *, int, int,
uchar_t *, int));
int res_nmkquery __P((res_state,
int, const char *, int, int, const uchar_t *,
int, const uchar_t *, uchar_t *, int));
int res_nsend __P((res_state, const uchar_t *, int, uchar_t *,
int));
int res_nsendsigned __P((res_state, const uchar_t *, int,
ns_tsig_key *, uchar_t *, int));
int res_findzonecut __P((res_state, const char *, ns_class, int,
char *, size_t, struct in_addr *, int));
int res_findzonecut2 __P((res_state, const char *, ns_class, int,
char *, size_t, union res_sockaddr_union *,
int));
void res_nclose __P((res_state));
int res_nopt __P((res_state, int, uchar_t *, int, int));
int res_nopt_rdata __P((res_state, int, uchar_t *, int, uchar_t *,
ushort_t, ushort_t, uchar_t *));
void res_send_setqhook __P((res_send_qhook hook));
void res_send_setrhook __P((res_send_rhook hook));
int __res_vinit __P((res_state, int));
void res_destroyservicelist __P((void));
const char *res_servicename __P((uint16_t port, const char *proto));
const char *res_protocolname __P((int num));
void res_destroyprotolist __P((void));
void res_buildprotolist __P((void));
const char *res_get_nibblesuffix __P((res_state));
const char *res_get_nibblesuffix2 __P((res_state));
void res_ndestroy __P((res_state));
uint16_t res_nametoclass __P((const char *buf, int *success));
uint16_t res_nametotype __P((const char *buf, int *success));
void res_setservers __P((res_state,
const union res_sockaddr_union *, int));
int res_getservers __P((res_state,
union res_sockaddr_union *, int));
#ifdef __cplusplus
}
#endif
#endif /* !_RESOLV_H_ */