xref: /illumos-gate/usr/src/head/arpa/nameser.h (revision ffe0b5fa)
17c478bd9Sstevel@tonic-gate /*
29525b14bSRao Shoaib  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
37c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
4b31320a7SChris Fraire  * Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
57c478bd9Sstevel@tonic-gate  */
67c478bd9Sstevel@tonic-gate 
77c478bd9Sstevel@tonic-gate /*
87c478bd9Sstevel@tonic-gate  * Copyright (c) 1983, 1989, 1993
97c478bd9Sstevel@tonic-gate  *    The Regents of the University of California.  All rights reserved.
107c478bd9Sstevel@tonic-gate  *
117c478bd9Sstevel@tonic-gate  * Redistribution and use in source and binary forms, with or without
127c478bd9Sstevel@tonic-gate  * modification, are permitted provided that the following conditions
137c478bd9Sstevel@tonic-gate  * are met:
147c478bd9Sstevel@tonic-gate  * 1. Redistributions of source code must retain the above copyright
157c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer.
167c478bd9Sstevel@tonic-gate  * 2. Redistributions in binary form must reproduce the above copyright
177c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer in the
187c478bd9Sstevel@tonic-gate  *    documentation and/or other materials provided with the distribution.
197c478bd9Sstevel@tonic-gate  * 3. All advertising materials mentioning features or use of this software
207c478bd9Sstevel@tonic-gate  *    must display the following acknowledgement:
216e270ca8SMarcel Telka  *	This product includes software developed by the University of
226e270ca8SMarcel Telka  *	California, Berkeley and its contributors.
237c478bd9Sstevel@tonic-gate  * 4. Neither the name of the University nor the names of its contributors
247c478bd9Sstevel@tonic-gate  *    may be used to endorse or promote products derived from this software
257c478bd9Sstevel@tonic-gate  *    without specific prior written permission.
267c478bd9Sstevel@tonic-gate  *
277c478bd9Sstevel@tonic-gate  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
287c478bd9Sstevel@tonic-gate  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
297c478bd9Sstevel@tonic-gate  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
307c478bd9Sstevel@tonic-gate  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
317c478bd9Sstevel@tonic-gate  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
327c478bd9Sstevel@tonic-gate  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
337c478bd9Sstevel@tonic-gate  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
347c478bd9Sstevel@tonic-gate  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
357c478bd9Sstevel@tonic-gate  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
367c478bd9Sstevel@tonic-gate  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
377c478bd9Sstevel@tonic-gate  * SUCH DAMAGE.
387c478bd9Sstevel@tonic-gate  */
397c478bd9Sstevel@tonic-gate 
407c478bd9Sstevel@tonic-gate /*
419525b14bSRao Shoaib  * Portions Copyright (C) 2004, 2005, 2008, 2009
429525b14bSRao Shoaib  * Internet Systems Consortium, Inc. ("ISC")
439525b14bSRao Shoaib  * Portions Copyright (C) 1996-2003  Internet Software Consortium.
447c478bd9Sstevel@tonic-gate  *
459525b14bSRao Shoaib  * Permission to use, copy, modify, and/or distribute this software for any
467c478bd9Sstevel@tonic-gate  * purpose with or without fee is hereby granted, provided that the above
477c478bd9Sstevel@tonic-gate  * copyright notice and this permission notice appear in all copies.
487c478bd9Sstevel@tonic-gate  *
499525b14bSRao Shoaib  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
509525b14bSRao Shoaib  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
519525b14bSRao Shoaib  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
529525b14bSRao Shoaib  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
539525b14bSRao Shoaib  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
549525b14bSRao Shoaib  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
559525b14bSRao Shoaib  * PERFORMANCE OF THIS SOFTWARE.
567c478bd9Sstevel@tonic-gate  */
577c478bd9Sstevel@tonic-gate 
587c478bd9Sstevel@tonic-gate /*
597c478bd9Sstevel@tonic-gate  *	$Id: nameser.h,v 8.50 2003/05/27 23:36:52 marka Exp $
607c478bd9Sstevel@tonic-gate  */
617c478bd9Sstevel@tonic-gate 
627c478bd9Sstevel@tonic-gate #ifndef _ARPA_NAMESER_H
637c478bd9Sstevel@tonic-gate #define	_ARPA_NAMESER_H
647c478bd9Sstevel@tonic-gate 
657c478bd9Sstevel@tonic-gate #include <sys/isa_defs.h>
667c478bd9Sstevel@tonic-gate 
677c478bd9Sstevel@tonic-gate 
687c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
697c478bd9Sstevel@tonic-gate extern "C" {
707c478bd9Sstevel@tonic-gate #endif
717c478bd9Sstevel@tonic-gate 
727c478bd9Sstevel@tonic-gate #define	BIND_4_COMPAT
737c478bd9Sstevel@tonic-gate 
747c478bd9Sstevel@tonic-gate /*
757c478bd9Sstevel@tonic-gate  * Revision information.  This is the release date in YYYYMMDD format.
767c478bd9Sstevel@tonic-gate  * It can change every day so the right thing to do with it is use it
777c478bd9Sstevel@tonic-gate  * in preprocessor commands such as "#if (__NAMESER > 19931104)".  Do not
787c478bd9Sstevel@tonic-gate  * compare for equality; rather, use it to determine whether your libresolv
797c478bd9Sstevel@tonic-gate  * contains a new enough lib/nameser/ to support the feature you need.
807c478bd9Sstevel@tonic-gate  */
817c478bd9Sstevel@tonic-gate 
829525b14bSRao Shoaib #define	__NAMESER	20090302	/* New interface version stamp. */
837c478bd9Sstevel@tonic-gate 
847c478bd9Sstevel@tonic-gate /*
857c478bd9Sstevel@tonic-gate  * Define constants based on RFC 883, RFC 1034, RFC 1035
867c478bd9Sstevel@tonic-gate  */
877c478bd9Sstevel@tonic-gate #define	NS_PACKETSZ	512	/* default UDP packet size */
887c478bd9Sstevel@tonic-gate #define	NS_MAXDNAME	1025	/* maximum domain name */
897c478bd9Sstevel@tonic-gate #define	NS_MAXMSG	65535	/* maximum message size */
907c478bd9Sstevel@tonic-gate #define	NS_MAXCDNAME	255	/* maximum compressed domain name */
917c478bd9Sstevel@tonic-gate #define	NS_MAXLABEL	63	/* maximum length of domain label */
929525b14bSRao Shoaib #define	NS_MAXLABELS	128	/* theoretical max #/labels per domain name */
939525b14bSRao Shoaib #define	NS_MAXNNAME	256	/* maximum uncompressed (binary) domain name */
949525b14bSRao Shoaib #define	NS_MAXPADDR	(sizeof ("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"))
957c478bd9Sstevel@tonic-gate #define	NS_HFIXEDSZ	12	/* #/bytes of fixed data in header */
967c478bd9Sstevel@tonic-gate #define	NS_QFIXEDSZ	4	/* #/bytes of fixed data in query */
977c478bd9Sstevel@tonic-gate #define	NS_RRFIXEDSZ	10	/* #/bytes of fixed data in r record */
987c478bd9Sstevel@tonic-gate #define	NS_INT32SZ	4	/* #/bytes of data in a u_int32_t */
997c478bd9Sstevel@tonic-gate #define	NS_INT16SZ	2	/* #/bytes of data in a u_int16_t */
1007c478bd9Sstevel@tonic-gate #define	NS_INT8SZ	1	/* #/bytes of data in a u_int8_t */
1017c478bd9Sstevel@tonic-gate #define	NS_INADDRSZ	4	/* IPv4 T_A */
1027c478bd9Sstevel@tonic-gate #define	NS_IN6ADDRSZ	16	/* IPv6 T_AAAA */
1037c478bd9Sstevel@tonic-gate #define	NS_CMPRSFLGS	0xc0	/* Flag bits indicating name compression. */
1047c478bd9Sstevel@tonic-gate #define	NS_DEFAULTPORT	53	/* For both TCP and UDP. */
1057c478bd9Sstevel@tonic-gate 
1067c478bd9Sstevel@tonic-gate /*
1077c478bd9Sstevel@tonic-gate  * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
1087c478bd9Sstevel@tonic-gate  * in synch with it.
1097c478bd9Sstevel@tonic-gate  */
1107c478bd9Sstevel@tonic-gate typedef enum __ns_sect {
1117c478bd9Sstevel@tonic-gate 	ns_s_qd = 0,		/* Query: Question. */
1127c478bd9Sstevel@tonic-gate 	ns_s_zn = 0,		/* Update: Zone. */
1137c478bd9Sstevel@tonic-gate 	ns_s_an = 1,		/* Query: Answer. */
1147c478bd9Sstevel@tonic-gate 	ns_s_pr = 1,		/* Update: Prerequisites. */
1157c478bd9Sstevel@tonic-gate 	ns_s_ns = 2,		/* Query: Name servers. */
1167c478bd9Sstevel@tonic-gate 	ns_s_ud = 2,		/* Update: Update. */
1177c478bd9Sstevel@tonic-gate 	ns_s_ar = 3,		/* Query|Update: Additional records. */
1187c478bd9Sstevel@tonic-gate 	ns_s_max = 4
1197c478bd9Sstevel@tonic-gate } ns_sect;
1207c478bd9Sstevel@tonic-gate 
1219525b14bSRao Shoaib /*
1229525b14bSRao Shoaib  * Network name (compressed or not) type.  Equivalent to a pointer when used
1239525b14bSRao Shoaib  * in a function prototype.  Can be const'd.
1249525b14bSRao Shoaib  */
1259525b14bSRao Shoaib typedef uchar_t ns_nname[NS_MAXNNAME];
1269525b14bSRao Shoaib typedef const uchar_t *ns_nname_ct;
1279525b14bSRao Shoaib typedef uchar_t *ns_nname_t;
1289525b14bSRao Shoaib 
1299525b14bSRao Shoaib struct ns_namemap { ns_nname_ct base; int len; };
1309525b14bSRao Shoaib typedef struct ns_namemap *ns_namemap_t;
1319525b14bSRao Shoaib typedef const struct ns_namemap *ns_namemap_ct;
1329525b14bSRao Shoaib 
1337c478bd9Sstevel@tonic-gate /*
1347c478bd9Sstevel@tonic-gate  * This is a message handle.  It is caller allocated and has no dynamic data.
1357c478bd9Sstevel@tonic-gate  * This structure is intended to be opaque to all but ns_parse.c, thus the
1367c478bd9Sstevel@tonic-gate  * leading _'s on the member names.  Use the accessor functions, not the _'s.
1377c478bd9Sstevel@tonic-gate  */
1387c478bd9Sstevel@tonic-gate typedef struct __ns_msg {
1397c478bd9Sstevel@tonic-gate 	const uchar_t	*_msg, *_eom;
1407c478bd9Sstevel@tonic-gate 	uint16_t	_id, _flags, _counts[ns_s_max];
1417c478bd9Sstevel@tonic-gate 	const uchar_t	*_sections[ns_s_max];
1427c478bd9Sstevel@tonic-gate 	ns_sect		_sect;
1437c478bd9Sstevel@tonic-gate 	int		_rrnum;
1447c478bd9Sstevel@tonic-gate 	const uchar_t	*_msg_ptr;
1457c478bd9Sstevel@tonic-gate } ns_msg;
1467c478bd9Sstevel@tonic-gate 
1479525b14bSRao Shoaib /*
1489525b14bSRao Shoaib  * This is a newmsg handle, used when constructing new messages with
1499525b14bSRao Shoaib  * ns_newmsg_init, et al.
1509525b14bSRao Shoaib  */
1519525b14bSRao Shoaib struct ns_newmsg {
1529525b14bSRao Shoaib 	ns_msg		msg;
1539525b14bSRao Shoaib 	const uchar_t	*dnptrs[25];
1549525b14bSRao Shoaib 	const uchar_t	**lastdnptr;
1559525b14bSRao Shoaib };
1569525b14bSRao Shoaib typedef struct ns_newmsg ns_newmsg;
1579525b14bSRao Shoaib 
1587c478bd9Sstevel@tonic-gate /* Private data structure - do not use from outside library. */
1597c478bd9Sstevel@tonic-gate struct _ns_flagdata {  int mask, shift;  };
1607c478bd9Sstevel@tonic-gate extern struct _ns_flagdata _ns_flagdata[];
1617c478bd9Sstevel@tonic-gate 
1627c478bd9Sstevel@tonic-gate /* Accessor macros - this is part of the public interface. */
1637c478bd9Sstevel@tonic-gate #define	ns_msg_id(handle) ((handle)._id + 0)
1647c478bd9Sstevel@tonic-gate #define	ns_msg_base(handle) ((handle)._msg + 0)
1657c478bd9Sstevel@tonic-gate #define	ns_msg_end(handle) ((handle)._eom + 0)
1667c478bd9Sstevel@tonic-gate #define	ns_msg_size(handle) ((handle)._eom - (handle)._msg)
1677c478bd9Sstevel@tonic-gate #define	ns_msg_count(handle, section) ((handle)._counts[section] + 0)
1687c478bd9Sstevel@tonic-gate 
1697c478bd9Sstevel@tonic-gate /*
1707c478bd9Sstevel@tonic-gate  * This is a parsed record.  It is caller allocated and has no dynamic data.
1717c478bd9Sstevel@tonic-gate  */
1727c478bd9Sstevel@tonic-gate typedef	struct __ns_rr {
1737c478bd9Sstevel@tonic-gate 	char		name[NS_MAXDNAME];
1747c478bd9Sstevel@tonic-gate 	uint16_t	type;
1757c478bd9Sstevel@tonic-gate 	uint16_t	rr_class;
1767c478bd9Sstevel@tonic-gate 	uint32_t	ttl;
1777c478bd9Sstevel@tonic-gate 	uint16_t	rdlength;
1787c478bd9Sstevel@tonic-gate 	const uchar_t	*rdata;
1797c478bd9Sstevel@tonic-gate } ns_rr;
1807c478bd9Sstevel@tonic-gate 
1819525b14bSRao Shoaib /*
1829525b14bSRao Shoaib  * Same thing, but using uncompressed network binary names, and real C types.
1839525b14bSRao Shoaib  */
1849525b14bSRao Shoaib typedef	struct __ns_rr2 {
1859525b14bSRao Shoaib 	ns_nname	nname;
1869525b14bSRao Shoaib 	size_t		nnamel;
1879525b14bSRao Shoaib 	int		type;
1889525b14bSRao Shoaib 	int		rr_class;
1899525b14bSRao Shoaib 	uint_t		ttl;
1909525b14bSRao Shoaib 	int		rdlength;
1919525b14bSRao Shoaib 	const uchar_t	*rdata;
1929525b14bSRao Shoaib } ns_rr2;
1939525b14bSRao Shoaib 
1947c478bd9Sstevel@tonic-gate /* Accessor macros - this is part of the public interface. */
1957c478bd9Sstevel@tonic-gate #define	ns_rr_name(rr)	(((rr).name[0] != '\0') ? (rr).name : ".")
1969525b14bSRao Shoaib #define	ns_rr_nname(rr)	((const ns_nname_t)(rr).nname)
1979525b14bSRao Shoaib #define	ns_rr_nnamel(rr) ((rr).nnamel + 0)
1987c478bd9Sstevel@tonic-gate #define	ns_rr_type(rr)	((ns_type)((rr).type + 0))
1997c478bd9Sstevel@tonic-gate #define	ns_rr_class(rr)	((ns_class)((rr).rr_class + 0))
2007c478bd9Sstevel@tonic-gate #define	ns_rr_ttl(rr)	((rr).ttl + 0)
2017c478bd9Sstevel@tonic-gate #define	ns_rr_rdlen(rr)	((rr).rdlength + 0)
2027c478bd9Sstevel@tonic-gate #define	ns_rr_rdata(rr)	((rr).rdata + 0)
2037c478bd9Sstevel@tonic-gate 
2047c478bd9Sstevel@tonic-gate /*
2057c478bd9Sstevel@tonic-gate  * These don't have to be in the same order as in the packet flags word,
2067c478bd9Sstevel@tonic-gate  * and they can even overlap in some cases, but they will need to be kept
2077c478bd9Sstevel@tonic-gate  * in synch with ns_parse.c:ns_flagdata[].
2087c478bd9Sstevel@tonic-gate  */
2097c478bd9Sstevel@tonic-gate typedef enum __ns_flag {
2107c478bd9Sstevel@tonic-gate 	ns_f_qr,		/* Question/Response. */
2117c478bd9Sstevel@tonic-gate 	ns_f_opcode,		/* Operation code. */
2127c478bd9Sstevel@tonic-gate 	ns_f_aa,		/* Authoritative Answer. */
2137c478bd9Sstevel@tonic-gate 	ns_f_tc,		/* Truncation occurred. */
2147c478bd9Sstevel@tonic-gate 	ns_f_rd,		/* Recursion Desired. */
2157c478bd9Sstevel@tonic-gate 	ns_f_ra,		/* Recursion Available. */
2167c478bd9Sstevel@tonic-gate 	ns_f_z,			/* MBZ. */
2177c478bd9Sstevel@tonic-gate 	ns_f_ad,		/* Authentic Data (DNSSEC). */
2187c478bd9Sstevel@tonic-gate 	ns_f_cd,		/* Checking Disabled (DNSSEC). */
2197c478bd9Sstevel@tonic-gate 	ns_f_rcode,		/* Response code. */
2207c478bd9Sstevel@tonic-gate 	ns_f_max
2217c478bd9Sstevel@tonic-gate } ns_flag;
2227c478bd9Sstevel@tonic-gate 
2237c478bd9Sstevel@tonic-gate /*
2247c478bd9Sstevel@tonic-gate  * Currently defined opcodes.
2257c478bd9Sstevel@tonic-gate  */
2267c478bd9Sstevel@tonic-gate typedef enum __ns_opcode {
2277c478bd9Sstevel@tonic-gate 	ns_o_query = 0,		/* Standard query. */
2287c478bd9Sstevel@tonic-gate 	ns_o_iquery = 1,	/* Inverse query (deprecated/unsupported). */
2297c478bd9Sstevel@tonic-gate 	ns_o_status = 2,	/* Name server status query (unsupported). */
2307c478bd9Sstevel@tonic-gate 				/* Opcode 3 is undefined/reserved. */
2317c478bd9Sstevel@tonic-gate 	ns_o_notify = 4,	/* Zone change notification. */
2327c478bd9Sstevel@tonic-gate 	ns_o_update = 5,	/* Zone update message. */
2337c478bd9Sstevel@tonic-gate 	ns_o_max = 6
2347c478bd9Sstevel@tonic-gate } ns_opcode;
2357c478bd9Sstevel@tonic-gate 
2367c478bd9Sstevel@tonic-gate /*
2377c478bd9Sstevel@tonic-gate  * Currently defined response codes.
2387c478bd9Sstevel@tonic-gate  */
2397c478bd9Sstevel@tonic-gate typedef	enum __ns_rcode {
2407c478bd9Sstevel@tonic-gate 	ns_r_noerror = 0,	/* No error occurred. */
2417c478bd9Sstevel@tonic-gate 	ns_r_formerr = 1,	/* Format error. */
2427c478bd9Sstevel@tonic-gate 	ns_r_servfail = 2,	/* Server failure. */
2437c478bd9Sstevel@tonic-gate 	ns_r_nxdomain = 3,	/* Name error. */
2447c478bd9Sstevel@tonic-gate 	ns_r_notimpl = 4,	/* Unimplemented. */
2457c478bd9Sstevel@tonic-gate 	ns_r_refused = 5,	/* Operation refused. */
2467c478bd9Sstevel@tonic-gate 	/* these are for BIND_UPDATE */
2477c478bd9Sstevel@tonic-gate 	ns_r_yxdomain = 6,	/* Name exists */
2487c478bd9Sstevel@tonic-gate 	ns_r_yxrrset = 7,	/* RRset exists */
2497c478bd9Sstevel@tonic-gate 	ns_r_nxrrset = 8,	/* RRset does not exist */
2507c478bd9Sstevel@tonic-gate 	ns_r_notauth = 9,	/* Not authoritative for zone */
2517c478bd9Sstevel@tonic-gate 	ns_r_notzone = 10,	/* Zone of record different from zone section */
2527c478bd9Sstevel@tonic-gate 	ns_r_max = 11,
2537c478bd9Sstevel@tonic-gate 	/* The following are EDNS extended rcodes */
2547c478bd9Sstevel@tonic-gate 	ns_r_badvers = 16,
2557c478bd9Sstevel@tonic-gate 	/* The following are TSIG errors */
2567c478bd9Sstevel@tonic-gate 	ns_r_badsig = 16,
2577c478bd9Sstevel@tonic-gate 	ns_r_badkey = 17,
2587c478bd9Sstevel@tonic-gate 	ns_r_badtime = 18
2597c478bd9Sstevel@tonic-gate } ns_rcode;
2607c478bd9Sstevel@tonic-gate 
2617c478bd9Sstevel@tonic-gate /* BIND_UPDATE */
2627c478bd9Sstevel@tonic-gate typedef enum __ns_update_operation {
2637c478bd9Sstevel@tonic-gate 	ns_uop_delete = 0,
2647c478bd9Sstevel@tonic-gate 	ns_uop_add = 1,
2657c478bd9Sstevel@tonic-gate 	ns_uop_max = 2
2667c478bd9Sstevel@tonic-gate } ns_update_operation;
2677c478bd9Sstevel@tonic-gate 
2687c478bd9Sstevel@tonic-gate /*
2697c478bd9Sstevel@tonic-gate  * This RR-like structure is particular to UPDATE.
2707c478bd9Sstevel@tonic-gate  */
2717c478bd9Sstevel@tonic-gate struct ns_updrec {
2727c478bd9Sstevel@tonic-gate 	struct ns_updrec *r_prev;	/* prev record */
2737c478bd9Sstevel@tonic-gate 	struct ns_updrec *r_next;	/* next record */
2749525b14bSRao Shoaib 	uint8_t		r_section;	/* ZONE/PREREQUISITE/UPDATE */
2757c478bd9Sstevel@tonic-gate 	char		*r_dname;	/* owner of the RR */
2767c478bd9Sstevel@tonic-gate 	uint16_t	r_class;	/* class number */
2777c478bd9Sstevel@tonic-gate 	uint16_t	r_type;		/* type number */
2787c478bd9Sstevel@tonic-gate 	uint32_t	r_ttl;		/* time to live */
2797c478bd9Sstevel@tonic-gate 	uchar_t		*r_data;	/* rdata fields as text string */
2807c478bd9Sstevel@tonic-gate 	uint16_t	r_size;		/* size of r_data field */
2817c478bd9Sstevel@tonic-gate 	int		r_opcode;	/* type of operation */
2827c478bd9Sstevel@tonic-gate 	/* following fields for private use by the resolver/server routines */
2837c478bd9Sstevel@tonic-gate 	struct ns_updrec *r_grpnext;	/* next record when grouped */
2847c478bd9Sstevel@tonic-gate 	struct databuf *r_dp;		/* databuf to process */
2857c478bd9Sstevel@tonic-gate 	struct databuf *r_deldp;	/* databuf's deleted/overwritten */
2867c478bd9Sstevel@tonic-gate 	uint16_t	r_zone;		/* zone number on server */
2877c478bd9Sstevel@tonic-gate };
2887c478bd9Sstevel@tonic-gate typedef struct ns_updrec ns_updrec;
2897c478bd9Sstevel@tonic-gate 
2907c478bd9Sstevel@tonic-gate /*
2917c478bd9Sstevel@tonic-gate  * This structure is used for TSIG authenticated messages
2927c478bd9Sstevel@tonic-gate  */
2937c478bd9Sstevel@tonic-gate struct ns_tsig_key {
2947c478bd9Sstevel@tonic-gate 		char name[NS_MAXDNAME], alg[NS_MAXDNAME];
2957c478bd9Sstevel@tonic-gate 		unsigned char *data;
2967c478bd9Sstevel@tonic-gate 		int len;
2977c478bd9Sstevel@tonic-gate };
2987c478bd9Sstevel@tonic-gate typedef struct ns_tsig_key ns_tsig_key;
2997c478bd9Sstevel@tonic-gate 
3007c478bd9Sstevel@tonic-gate /*
3017c478bd9Sstevel@tonic-gate  * This structure is used for TSIG authenticated TCP messages
3027c478bd9Sstevel@tonic-gate  */
3037c478bd9Sstevel@tonic-gate struct ns_tcp_tsig_state {
3047c478bd9Sstevel@tonic-gate 	int counter;
3057c478bd9Sstevel@tonic-gate 	struct dst_key *key;
3067c478bd9Sstevel@tonic-gate 	void *ctx;
3077c478bd9Sstevel@tonic-gate 	unsigned char sig[NS_PACKETSZ];
3087c478bd9Sstevel@tonic-gate 	int siglen;
3097c478bd9Sstevel@tonic-gate };
3107c478bd9Sstevel@tonic-gate typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
3117c478bd9Sstevel@tonic-gate 
3127c478bd9Sstevel@tonic-gate #define	NS_TSIG_FUDGE 300
3137c478bd9Sstevel@tonic-gate #define	NS_TSIG_TCP_COUNT 100
3147c478bd9Sstevel@tonic-gate #define	NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT"
3157c478bd9Sstevel@tonic-gate 
3167c478bd9Sstevel@tonic-gate #define	NS_TSIG_ERROR_NO_TSIG -10
3177c478bd9Sstevel@tonic-gate #define	NS_TSIG_ERROR_NO_SPACE -11
3187c478bd9Sstevel@tonic-gate #define	NS_TSIG_ERROR_FORMERR -12
3197c478bd9Sstevel@tonic-gate 
3207c478bd9Sstevel@tonic-gate /*
3217c478bd9Sstevel@tonic-gate  * Currently defined type values for resources and queries.
3227c478bd9Sstevel@tonic-gate  */
3237c478bd9Sstevel@tonic-gate typedef enum __ns_type {
3247c478bd9Sstevel@tonic-gate 	ns_t_invalid = 0,	/* Cookie. */
3257c478bd9Sstevel@tonic-gate 	ns_t_a = 1,		/* Host address. */
3267c478bd9Sstevel@tonic-gate 	ns_t_ns = 2,		/* Authoritative server. */
3277c478bd9Sstevel@tonic-gate 	ns_t_md = 3,		/* Mail destination. */
3287c478bd9Sstevel@tonic-gate 	ns_t_mf = 4,		/* Mail forwarder. */
3297c478bd9Sstevel@tonic-gate 	ns_t_cname = 5,		/* Canonical name. */
3307c478bd9Sstevel@tonic-gate 	ns_t_soa = 6,		/* Start of authority zone. */
3317c478bd9Sstevel@tonic-gate 	ns_t_mb = 7,		/* Mailbox domain name. */
3327c478bd9Sstevel@tonic-gate 	ns_t_mg = 8,		/* Mail group member. */
3337c478bd9Sstevel@tonic-gate 	ns_t_mr = 9,		/* Mail rename name. */
3347c478bd9Sstevel@tonic-gate 	ns_t_null = 10,		/* Null resource record. */
3357c478bd9Sstevel@tonic-gate 	ns_t_wks = 11,		/* Well known service. */
3367c478bd9Sstevel@tonic-gate 	ns_t_ptr = 12,		/* Domain name pointer. */
3377c478bd9Sstevel@tonic-gate 	ns_t_hinfo = 13,	/* Host information. */
3387c478bd9Sstevel@tonic-gate 	ns_t_minfo = 14,	/* Mailbox information. */
3397c478bd9Sstevel@tonic-gate 	ns_t_mx = 15,		/* Mail routing information. */
3407c478bd9Sstevel@tonic-gate 	ns_t_txt = 16,		/* Text strings. */
3417c478bd9Sstevel@tonic-gate 	ns_t_rp = 17,		/* Responsible person. */
3427c478bd9Sstevel@tonic-gate 	ns_t_afsdb = 18,	/* AFS cell database. */
3437c478bd9Sstevel@tonic-gate 	ns_t_x25 = 19,		/* X_25 calling address. */
3447c478bd9Sstevel@tonic-gate 	ns_t_isdn = 20,		/* ISDN calling address. */
3457c478bd9Sstevel@tonic-gate 	ns_t_rt = 21,		/* Router. */
3467c478bd9Sstevel@tonic-gate 	ns_t_nsap = 22,		/* NSAP address. */
3477c478bd9Sstevel@tonic-gate 	ns_t_nsap_ptr = 23,	/* Reverse NSAP lookup (deprecated). */
3487c478bd9Sstevel@tonic-gate 	ns_t_sig = 24,		/* Security signature. */
3497c478bd9Sstevel@tonic-gate 	ns_t_key = 25,		/* Security key. */
3507c478bd9Sstevel@tonic-gate 	ns_t_px = 26,		/* X.400 mail mapping. */
3517c478bd9Sstevel@tonic-gate 	ns_t_gpos = 27,		/* Geographical position (withdrawn). */
3527c478bd9Sstevel@tonic-gate 	ns_t_aaaa = 28,		/* IPv6 Address. */
3537c478bd9Sstevel@tonic-gate 	ns_t_loc = 29,		/* Location Information. */
3547c478bd9Sstevel@tonic-gate 	ns_t_nxt = 30,		/* Next domain (security). */
3557c478bd9Sstevel@tonic-gate 	ns_t_eid = 31,		/* Endpoint identifier. */
3567c478bd9Sstevel@tonic-gate 	ns_t_nimloc = 32,	/* Nimrod Locator. */
3577c478bd9Sstevel@tonic-gate 	ns_t_srv = 33,		/* Server Selection. */
3587c478bd9Sstevel@tonic-gate 	ns_t_atma = 34,		/* ATM Address */
3597c478bd9Sstevel@tonic-gate 	ns_t_naptr = 35,	/* Naming Authority PoinTeR */
3607c478bd9Sstevel@tonic-gate 	ns_t_kx = 36,		/* Key Exchange */
3617c478bd9Sstevel@tonic-gate 	ns_t_cert = 37,		/* Certification record */
3627c478bd9Sstevel@tonic-gate 	ns_t_a6 = 38,		/* IPv6 address (deprecated) */
3637c478bd9Sstevel@tonic-gate 	ns_t_dname = 39,	/* Non-terminal DNAME (for IPv6) */
3647c478bd9Sstevel@tonic-gate 	ns_t_sink = 40,		/* Kitchen sink (experimentatl) */
3657c478bd9Sstevel@tonic-gate 	ns_t_opt = 41,		/* EDNS0 option (meta-RR) */
3667c478bd9Sstevel@tonic-gate 	ns_t_apl = 42,		/* Address prefix list (RFC 3123) */
3679525b14bSRao Shoaib 	ns_t_ds = 43,		/* Delegation Signer */
3689525b14bSRao Shoaib 	ns_t_sshfp = 44,	/* SSH Fingerprint */
3699525b14bSRao Shoaib 	ns_t_ipseckey = 45,	/* IPSEC Key */
3709525b14bSRao Shoaib 	ns_t_rrsig = 46,	/* RRset Signature */
3719525b14bSRao Shoaib 	ns_t_nsec = 47,		/* Negative security */
3729525b14bSRao Shoaib 	ns_t_dnskey = 48,	/* DNS Key */
3739525b14bSRao Shoaib 	ns_t_dhcid = 49,	/* Dynamic host configuratin identifier */
3749525b14bSRao Shoaib 	ns_t_nsec3 = 50,	/* Negative security type 3 */
3759525b14bSRao Shoaib 	ns_t_nsec3param = 51,	/* Negative security type 3 parameters */
376*ffe0b5faSSebastian Wiedenroth 	ns_t_tlsa = 52,		/* TLSA (RFC 6698) */
377*ffe0b5faSSebastian Wiedenroth 	ns_t_smimea = 53,	/* S/MIME cert association (RFC 8162) */
3789525b14bSRao Shoaib 	ns_t_hip = 55,		/* Host Identity Protocol */
379*ffe0b5faSSebastian Wiedenroth 	ns_t_cds = 59,		/* Child DS (RFC 7344) */
380*ffe0b5faSSebastian Wiedenroth 	ns_t_cdnskey = 60,	/* DNSKEY(s) the Child wants reflected in DS */
381*ffe0b5faSSebastian Wiedenroth 	ns_t_openpgpkey = 61,	/* OpenPGP Key (RFC 7929) */
382*ffe0b5faSSebastian Wiedenroth 	ns_t_csync = 62,	/* Child-To-Parent Synchronization (RFC 7477) */
3839525b14bSRao Shoaib 	ns_t_spf = 99,		/* Sender Policy Framework */
3847c478bd9Sstevel@tonic-gate 	ns_t_tkey = 249,	/* Transaction key */
3857c478bd9Sstevel@tonic-gate 	ns_t_tsig = 250,	/* Transaction signature. */
3867c478bd9Sstevel@tonic-gate 	ns_t_ixfr = 251,	/* Incremental zone transfer. */
3877c478bd9Sstevel@tonic-gate 	ns_t_axfr = 252,	/* Transfer zone of authority. */
3887c478bd9Sstevel@tonic-gate 	ns_t_mailb = 253,	/* Transfer mailbox records. */
3897c478bd9Sstevel@tonic-gate 	ns_t_maila = 254,	/* Transfer mail agent records. */
3907c478bd9Sstevel@tonic-gate 	ns_t_any = 255,		/* Wildcard match. */
3917c478bd9Sstevel@tonic-gate 	ns_t_zxfr = 256,	/* BIND-specific, nonstandard. */
392*ffe0b5faSSebastian Wiedenroth 	ns_t_caa = 257,		/* Certification Authority Restriction */
3939525b14bSRao Shoaib 	ns_t_dlv = 32769,	/* DNSSEC look-aside validatation. */
3947c478bd9Sstevel@tonic-gate 	ns_t_max = 65536
3957c478bd9Sstevel@tonic-gate } ns_type;
3967c478bd9Sstevel@tonic-gate 
3977c478bd9Sstevel@tonic-gate /* Exclusively a QTYPE? (not also an RTYPE) */
3987c478bd9Sstevel@tonic-gate #define	ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
3997c478bd9Sstevel@tonic-gate 		(t) == ns_t_mailb || (t) == ns_t_maila)
4007c478bd9Sstevel@tonic-gate /* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
4017c478bd9Sstevel@tonic-gate #define	ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
4027c478bd9Sstevel@tonic-gate /* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
4037c478bd9Sstevel@tonic-gate #define	ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
4047c478bd9Sstevel@tonic-gate #define	ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
4057c478bd9Sstevel@tonic-gate #define	ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
4067c478bd9Sstevel@tonic-gate 		(t) == ns_t_zxfr)
4077c478bd9Sstevel@tonic-gate 
4087c478bd9Sstevel@tonic-gate /*
4097c478bd9Sstevel@tonic-gate  * Values for class field
4107c478bd9Sstevel@tonic-gate  */
4117c478bd9Sstevel@tonic-gate typedef enum __ns_class {
4127c478bd9Sstevel@tonic-gate 	ns_c_invalid = 0,	/* Cookie. */
4137c478bd9Sstevel@tonic-gate 	ns_c_in = 1,		/* Internet. */
4147c478bd9Sstevel@tonic-gate 	ns_c_2 = 2,		/* unallocated/unsupported. */
4157c478bd9Sstevel@tonic-gate 	ns_c_chaos = 3,		/* MIT Chaos-net. */
4167c478bd9Sstevel@tonic-gate 	ns_c_hs = 4,		/* MIT Hesiod. */
4177c478bd9Sstevel@tonic-gate 	/* Query class values which do not appear in resource records */
4187c478bd9Sstevel@tonic-gate 	ns_c_none = 254,	/* for prereq. sections in update requests */
4197c478bd9Sstevel@tonic-gate 	ns_c_any = 255,		/* Wildcard match. */
4207c478bd9Sstevel@tonic-gate 	ns_c_max = 65536
4217c478bd9Sstevel@tonic-gate } ns_class;
4227c478bd9Sstevel@tonic-gate 
4237c478bd9Sstevel@tonic-gate /* DNSSEC constants. */
4247c478bd9Sstevel@tonic-gate 
4257c478bd9Sstevel@tonic-gate typedef enum __ns_key_types {
4267c478bd9Sstevel@tonic-gate 	ns_kt_rsa = 1,		/* key type RSA/MD5 */
4277c478bd9Sstevel@tonic-gate 	ns_kt_dh  = 2,		/* Diffie Hellman */
4287c478bd9Sstevel@tonic-gate 	ns_kt_dsa = 3,		/* Digital Signature Standard (MANDATORY) */
4297c478bd9Sstevel@tonic-gate 	ns_kt_private = 254	/* Private key type starts with OID */
4307c478bd9Sstevel@tonic-gate } ns_key_types;
4317c478bd9Sstevel@tonic-gate 
4327c478bd9Sstevel@tonic-gate typedef enum __ns_cert_types {
4337c478bd9Sstevel@tonic-gate 	cert_t_pkix = 1,	/* PKIX (X.509v3) */
4347c478bd9Sstevel@tonic-gate 	cert_t_spki = 2,	/* SPKI */
4357c478bd9Sstevel@tonic-gate 	cert_t_pgp  = 3,	/* PGP */
4367c478bd9Sstevel@tonic-gate 	cert_t_url  = 253,	/* URL private type */
4377c478bd9Sstevel@tonic-gate 	cert_t_oid  = 254	/* OID private type */
4387c478bd9Sstevel@tonic-gate } ns_cert_types;
4397c478bd9Sstevel@tonic-gate 
4407c478bd9Sstevel@tonic-gate /* Flags field of the KEY RR rdata. */
4417c478bd9Sstevel@tonic-gate #define	NS_KEY_TYPEMASK		0xC000	/* Mask for "type" bits */
4427c478bd9Sstevel@tonic-gate #define	NS_KEY_TYPE_AUTH_CONF	0x0000	/* Key usable for both */
4437c478bd9Sstevel@tonic-gate #define	NS_KEY_TYPE_CONF_ONLY	0x8000	/* Key usable for confidentiality */
4447c478bd9Sstevel@tonic-gate #define	NS_KEY_TYPE_AUTH_ONLY	0x4000	/* Key usable for authentication */
4457c478bd9Sstevel@tonic-gate #define	NS_KEY_TYPE_NO_KEY	0xC000	/* No key usable for either; no key */
4467c478bd9Sstevel@tonic-gate /* The type bits can also be interpreted independently, as single bits: */
4477c478bd9Sstevel@tonic-gate #define	NS_KEY_NO_AUTH		0x8000	/* Key unusable for authentication */
4487c478bd9Sstevel@tonic-gate #define	NS_KEY_NO_CONF		0x4000	/* Key unusable for confidentiality */
4497c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED2	0x2000	/* Security is *mandatory* if bit=0 */
4507c478bd9Sstevel@tonic-gate #define	NS_KEY_EXTENDED_FLAGS	0x1000	/* reserved - must be zero */
4517c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED4	0x0800  /* reserved - must be zero */
4527c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED5	0x0400  /* reserved - must be zero */
4537c478bd9Sstevel@tonic-gate #define	NS_KEY_NAME_TYPE	0x0300	/* these bits determine the type */
4547c478bd9Sstevel@tonic-gate #define	NS_KEY_NAME_USER	0x0000	/* key is assoc. with user */
4557c478bd9Sstevel@tonic-gate #define	NS_KEY_NAME_ENTITY	0x0200	/* key is assoc. with entity eg host */
4567c478bd9Sstevel@tonic-gate #define	NS_KEY_NAME_ZONE	0x0100	/* key is zone key */
4577c478bd9Sstevel@tonic-gate #define	NS_KEY_NAME_RESERVED	0x0300	/* reserved meaning */
4587c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED8	0x0080  /* reserved - must be zero */
4597c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED9	0x0040  /* reserved - must be zero */
4607c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED10	0x0020  /* reserved - must be zero */
4617c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED11	0x0010  /* reserved - must be zero */
4627c478bd9Sstevel@tonic-gate #define	NS_KEY_SIGNATORYMASK	0x000F	/* key can sign RR's of same name */
4637c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED_BITMASK (NS_KEY_RESERVED2 | \
4647c478bd9Sstevel@tonic-gate     NS_KEY_RESERVED4 | \
4657c478bd9Sstevel@tonic-gate     NS_KEY_RESERVED5 | \
4667c478bd9Sstevel@tonic-gate     NS_KEY_RESERVED8 | \
4677c478bd9Sstevel@tonic-gate     NS_KEY_RESERVED9 | \
4687c478bd9Sstevel@tonic-gate     NS_KEY_RESERVED10 | \
4697c478bd9Sstevel@tonic-gate     NS_KEY_RESERVED11)
4707c478bd9Sstevel@tonic-gate #define	NS_KEY_RESERVED_BITMASK2	0xFFFF /* no bits defined here */
4717c478bd9Sstevel@tonic-gate 
4727c478bd9Sstevel@tonic-gate /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
4737c478bd9Sstevel@tonic-gate #define	NS_ALG_MD5RSA		1	/* MD5 with RSA */
4747c478bd9Sstevel@tonic-gate #define	NS_ALG_DH		2	/* Diffie Hellman KEY */
4757c478bd9Sstevel@tonic-gate #define	NS_ALG_DSA		3	/* DSA KEY */
4767c478bd9Sstevel@tonic-gate #define	NS_ALG_DSS		NS_ALG_DSA
4777c478bd9Sstevel@tonic-gate #define	NS_ALG_EXPIRE_ONLY	253	/* No alg, no security */
4787c478bd9Sstevel@tonic-gate #define	NS_ALG_PRIVATE_OID	254	/* Key begins with OID giving alg */
4797c478bd9Sstevel@tonic-gate 
4807c478bd9Sstevel@tonic-gate /* Protocol values  */
4817c478bd9Sstevel@tonic-gate /* value 0 is reserved */
4827c478bd9Sstevel@tonic-gate #define	NS_KEY_PROT_TLS		1
4837c478bd9Sstevel@tonic-gate #define	NS_KEY_PROT_EMAIL	2
4847c478bd9Sstevel@tonic-gate #define	NS_KEY_PROT_DNSSEC	3
4857c478bd9Sstevel@tonic-gate #define	NS_KEY_PROT_IPSEC	4
4867c478bd9Sstevel@tonic-gate #define	NS_KEY_PROT_ANY		255
4877c478bd9Sstevel@tonic-gate 
4887c478bd9Sstevel@tonic-gate /* Signatures */
4897c478bd9Sstevel@tonic-gate #define	NS_MD5RSA_MIN_BITS	 512	/* Size of a mod or exp in bits */
4907c478bd9Sstevel@tonic-gate #define	NS_MD5RSA_MAX_BITS	4096
4917c478bd9Sstevel@tonic-gate 	/* Total of binary mod and exp */
4927c478bd9Sstevel@tonic-gate #define	NS_MD5RSA_MAX_BYTES	((NS_MD5RSA_MAX_BITS+7/8)*2+3)
4937c478bd9Sstevel@tonic-gate 	/* Max length of text sig block */
4947c478bd9Sstevel@tonic-gate #define	NS_MD5RSA_MAX_BASE64	(((NS_MD5RSA_MAX_BYTES+2)/3)*4)
4957c478bd9Sstevel@tonic-gate #define	NS_MD5RSA_MIN_SIZE	((NS_MD5RSA_MIN_BITS+7)/8)
4967c478bd9Sstevel@tonic-gate #define	NS_MD5RSA_MAX_SIZE	((NS_MD5RSA_MAX_BITS+7)/8)
4977c478bd9Sstevel@tonic-gate 
4987c478bd9Sstevel@tonic-gate #define	NS_DSA_SIG_SIZE		41
4997c478bd9Sstevel@tonic-gate #define	NS_DSA_MIN_SIZE		213
5007c478bd9Sstevel@tonic-gate #define	NS_DSA_MAX_BYTES	405
5017c478bd9Sstevel@tonic-gate 
5027c478bd9Sstevel@tonic-gate /* Offsets into SIG record rdata to find various values */
5037c478bd9Sstevel@tonic-gate #define	NS_SIG_TYPE	0	/* Type flags */
5047c478bd9Sstevel@tonic-gate #define	NS_SIG_ALG	2	/* Algorithm */
5057c478bd9Sstevel@tonic-gate #define	NS_SIG_LABELS	3	/* How many labels in name */
5067c478bd9Sstevel@tonic-gate #define	NS_SIG_OTTL	4	/* Original TTL */
5077c478bd9Sstevel@tonic-gate #define	NS_SIG_EXPIR	8	/* Expiration time */
5087c478bd9Sstevel@tonic-gate #define	NS_SIG_SIGNED	12	/* Signature time */
5097c478bd9Sstevel@tonic-gate #define	NS_SIG_FOOT	16	/* Key footprint */
5107c478bd9Sstevel@tonic-gate #define	NS_SIG_SIGNER	18	/* Domain name of who signed it */
5117c478bd9Sstevel@tonic-gate 
5127c478bd9Sstevel@tonic-gate /* How RR types are represented as bit-flags in NXT records */
5137c478bd9Sstevel@tonic-gate #define	NS_NXT_BITS 8
5147c478bd9Sstevel@tonic-gate #define	NS_NXT_BIT_SET(n, p) \
5157c478bd9Sstevel@tonic-gate 	(p[(n)/NS_NXT_BITS] |=  (0x80>>((n)%NS_NXT_BITS)))
5167c478bd9Sstevel@tonic-gate #define	NS_NXT_BIT_CLEAR(n, p) \
5177c478bd9Sstevel@tonic-gate 	(p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
5187c478bd9Sstevel@tonic-gate #define	NS_NXT_BIT_ISSET(n, p) \
5197c478bd9Sstevel@tonic-gate 	(p[(n)/NS_NXT_BITS] &   (0x80>>((n)%NS_NXT_BITS)))
5207c478bd9Sstevel@tonic-gate #define	NS_NXT_MAX	127
5217c478bd9Sstevel@tonic-gate 
5227c478bd9Sstevel@tonic-gate /*
5237c478bd9Sstevel@tonic-gate  * EDNS0 extended flags, host order.
5247c478bd9Sstevel@tonic-gate  */
5257c478bd9Sstevel@tonic-gate #define	NS_OPT_DNSSEC_OK	0x8000U
5269525b14bSRao Shoaib #define	NS_OPT_NSID		3
5277c478bd9Sstevel@tonic-gate 
5287c478bd9Sstevel@tonic-gate /*
5297c478bd9Sstevel@tonic-gate  * Inline versions of get/put short/long.  Pointer is advanced.
5307c478bd9Sstevel@tonic-gate  */
5317c478bd9Sstevel@tonic-gate #define	NS_GET16(s, cp) do { \
5327c478bd9Sstevel@tonic-gate 	register const uchar_t *t_cp = (const uchar_t *)(cp); \
5337c478bd9Sstevel@tonic-gate 	(s) = ((uint16_t)t_cp[0] << 8) \
5347c478bd9Sstevel@tonic-gate 	    | ((uint16_t)t_cp[1]) \
5357c478bd9Sstevel@tonic-gate 	; \
5367c478bd9Sstevel@tonic-gate 	(cp) += NS_INT16SZ; \
5377c478bd9Sstevel@tonic-gate } while (0)
5387c478bd9Sstevel@tonic-gate 
5397c478bd9Sstevel@tonic-gate #define	NS_GET32(l, cp) do { \
5407c478bd9Sstevel@tonic-gate 	register const uchar_t *t_cp = (const uchar_t *)(cp); \
5417c478bd9Sstevel@tonic-gate 	(l) = ((uint32_t)t_cp[0] << 24) \
5427c478bd9Sstevel@tonic-gate 	    | ((uint32_t)t_cp[1] << 16) \
5437c478bd9Sstevel@tonic-gate 	    | ((uint32_t)t_cp[2] << 8) \
5447c478bd9Sstevel@tonic-gate 	    | ((uint32_t)t_cp[3]) \
5457c478bd9Sstevel@tonic-gate 	; \
5467c478bd9Sstevel@tonic-gate 	(cp) += NS_INT32SZ; \
5477c478bd9Sstevel@tonic-gate } while (0)
5487c478bd9Sstevel@tonic-gate 
5497c478bd9Sstevel@tonic-gate #define	NS_PUT16(s, cp) do { \
5507c478bd9Sstevel@tonic-gate 	register uint16_t t_s = (uint16_t)(s); \
5517c478bd9Sstevel@tonic-gate 	register uchar_t *t_cp = (uchar_t *)(cp); \
5527c478bd9Sstevel@tonic-gate 	*t_cp++ = t_s >> 8; \
5537c478bd9Sstevel@tonic-gate 	*t_cp   = t_s; \
5547c478bd9Sstevel@tonic-gate 	(cp) += NS_INT16SZ; \
5557c478bd9Sstevel@tonic-gate } while (0)
5567c478bd9Sstevel@tonic-gate 
5577c478bd9Sstevel@tonic-gate #define	NS_PUT32(l, cp) do { \
5587c478bd9Sstevel@tonic-gate 	register uint32_t t_l = (uint32_t)(l); \
5597c478bd9Sstevel@tonic-gate 	register uchar_t *t_cp = (uchar_t *)(cp); \
5607c478bd9Sstevel@tonic-gate 	*t_cp++ = t_l >> 24; \
5617c478bd9Sstevel@tonic-gate 	*t_cp++ = t_l >> 16; \
5627c478bd9Sstevel@tonic-gate 	*t_cp++ = t_l >> 8; \
5637c478bd9Sstevel@tonic-gate 	*t_cp   = t_l; \
5647c478bd9Sstevel@tonic-gate 	(cp) += NS_INT32SZ; \
5657c478bd9Sstevel@tonic-gate } while (0)
5667c478bd9Sstevel@tonic-gate 
5677c478bd9Sstevel@tonic-gate /*
5687c478bd9Sstevel@tonic-gate  * ANSI C identifier hiding.
5697c478bd9Sstevel@tonic-gate  */
5707c478bd9Sstevel@tonic-gate #define	ns_msg_getflag		__ns_msg_getflag
5717c478bd9Sstevel@tonic-gate #define	ns_get16		__ns_get16
5727c478bd9Sstevel@tonic-gate #define	ns_get32		__ns_get32
5737c478bd9Sstevel@tonic-gate #define	ns_put16		__ns_put16
5747c478bd9Sstevel@tonic-gate #define	ns_put32		__ns_put32
5757c478bd9Sstevel@tonic-gate #define	ns_initparse		__ns_initparse
5767c478bd9Sstevel@tonic-gate #define	ns_skiprr		__ns_skiprr
5777c478bd9Sstevel@tonic-gate #define	ns_parserr		__ns_parserr
5789525b14bSRao Shoaib #define	ns_parserr2		__ns_parserr2
5797c478bd9Sstevel@tonic-gate #define	ns_sprintrr		__ns_sprintrr
5807c478bd9Sstevel@tonic-gate #define	ns_sprintrrf		__ns_sprintrrf
5817c478bd9Sstevel@tonic-gate #define	ns_format_ttl		__ns_format_ttl
5827c478bd9Sstevel@tonic-gate #define	ns_parse_ttl		__ns_parse_ttl
5837c478bd9Sstevel@tonic-gate #define	ns_datetosecs		__ns_datetosecs
5847c478bd9Sstevel@tonic-gate #define	ns_name_ntol		__ns_name_ntol
5857c478bd9Sstevel@tonic-gate #define	ns_name_ntop		__ns_name_ntop
5867c478bd9Sstevel@tonic-gate #define	ns_name_pton		__ns_name_pton
587b31320a7SChris Fraire #define	ns_name_pton2		__ns_name_pton2
5887c478bd9Sstevel@tonic-gate #define	ns_name_unpack		__ns_name_unpack
5897c478bd9Sstevel@tonic-gate #define	ns_name_pack		__ns_name_pack
5907c478bd9Sstevel@tonic-gate #define	ns_name_compress	__ns_name_compress
5917c478bd9Sstevel@tonic-gate #define	ns_name_uncompress	__ns_name_uncompress
5927c478bd9Sstevel@tonic-gate #define	ns_name_skip		__ns_name_skip
5937c478bd9Sstevel@tonic-gate #define	ns_name_rollback	__ns_name_rollback
5949525b14bSRao Shoaib #define	ns_name_length		__ns_name_length
5959525b14bSRao Shoaib #define	ns_name_eq		__ns_name_eq
5969525b14bSRao Shoaib #define	ns_name_owned		__ns_name_owned
5979525b14bSRao Shoaib #define	ns_name_map		__ns_name_map
5989525b14bSRao Shoaib #define	ns_name_labels		__ns_name_labels
5997c478bd9Sstevel@tonic-gate #define	ns_sign			__ns_sign
6007c478bd9Sstevel@tonic-gate #define	ns_sign2		__ns_sign2
6017c478bd9Sstevel@tonic-gate #define	ns_sign_tcp		__ns_sign_tcp
6027c478bd9Sstevel@tonic-gate #define	ns_sign_tcp2		__ns_sign_tcp2
6037c478bd9Sstevel@tonic-gate #define	ns_sign_tcp_init	__ns_sign_tcp_init
6047c478bd9Sstevel@tonic-gate #define	ns_find_tsig		__ns_find_tsig
6057c478bd9Sstevel@tonic-gate #define	ns_verify		__ns_verify
6067c478bd9Sstevel@tonic-gate #define	ns_verify_tcp		__ns_verify_tcp
6077c478bd9Sstevel@tonic-gate #define	ns_verify_tcp_init	__ns_verify_tcp_init
6087c478bd9Sstevel@tonic-gate #define	ns_samedomain		__ns_samedomain
6097c478bd9Sstevel@tonic-gate #define	ns_subdomain		__ns_subdomain
6107c478bd9Sstevel@tonic-gate #define	ns_makecanon		__ns_makecanon
6117c478bd9Sstevel@tonic-gate #define	ns_samename		__ns_samename
6129525b14bSRao Shoaib #define	ns_newmsg_init		__ns_newmsg_init
6139525b14bSRao Shoaib #define	ns_newmsg_copy		__ns_newmsg_copy
6149525b14bSRao Shoaib #define	ns_newmsg_id		__ns_newmsg_id
6159525b14bSRao Shoaib #define	ns_newmsg_flag		__ns_newmsg_flag
6169525b14bSRao Shoaib #define	ns_newmsg_q		__ns_newmsg_q
6179525b14bSRao Shoaib #define	ns_newmsg_rr		__ns_newmsg_rr
6189525b14bSRao Shoaib #define	ns_newmsg_done		__ns_newmsg_done
6199525b14bSRao Shoaib #define	ns_rdata_unpack		__ns_rdata_unpack
6209525b14bSRao Shoaib #define	ns_rdata_equal		__ns_rdata_equal
6219525b14bSRao Shoaib #define	ns_rdata_refers		__ns_rdata_refers
6227c478bd9Sstevel@tonic-gate 
6237c478bd9Sstevel@tonic-gate int		ns_msg_getflag(ns_msg, int);
6247c478bd9Sstevel@tonic-gate uint_t		ns_get16(const uchar_t *);
6257c478bd9Sstevel@tonic-gate ulong_t		ns_get32(const uchar_t *);
6267c478bd9Sstevel@tonic-gate void		ns_put16(uint_t, uchar_t *);
6277c478bd9Sstevel@tonic-gate void		ns_put32(ulong_t, uchar_t *);
6287c478bd9Sstevel@tonic-gate int		ns_initparse(const uchar_t *, int, ns_msg *);
6297c478bd9Sstevel@tonic-gate int		ns_skiprr(const uchar_t *, const uchar_t *, ns_sect, int);
6307c478bd9Sstevel@tonic-gate int		ns_parserr(ns_msg *, ns_sect, int, ns_rr *);
6319525b14bSRao Shoaib int		ns_parserr2(ns_msg *, ns_sect, int, ns_rr2 *);
6327c478bd9Sstevel@tonic-gate int		ns_sprintrr(const ns_msg *, const ns_rr *,
6337c478bd9Sstevel@tonic-gate     const char *, const char *, char *, size_t);
6347c478bd9Sstevel@tonic-gate int		ns_sprintrrf(const uchar_t *, size_t, const char *,
6357c478bd9Sstevel@tonic-gate     ns_class, ns_type, ulong_t, const uchar_t *,
6367c478bd9Sstevel@tonic-gate     size_t, const char *, const char *,
6377c478bd9Sstevel@tonic-gate     char *, size_t);
6387c478bd9Sstevel@tonic-gate int		ns_format_ttl(ulong_t, char *, size_t);
6397c478bd9Sstevel@tonic-gate int		ns_parse_ttl(const char *, ulong_t *);
6407c478bd9Sstevel@tonic-gate uint32_t	ns_datetosecs(const char *cp, int *errp);
6417c478bd9Sstevel@tonic-gate int		ns_name_ntol(const uchar_t *, uchar_t *, size_t);
6427c478bd9Sstevel@tonic-gate int		ns_name_ntop(const uchar_t *, char *, size_t);
6437c478bd9Sstevel@tonic-gate int		ns_name_pton(const char *, uchar_t *, size_t);
644b31320a7SChris Fraire int		ns_name_pton2(const char *, uchar_t *, size_t, size_t *);
6457c478bd9Sstevel@tonic-gate int		ns_name_unpack(const uchar_t *, const uchar_t *,
6467c478bd9Sstevel@tonic-gate 				    const uchar_t *, uchar_t *, size_t);
6477c478bd9Sstevel@tonic-gate int		ns_name_pack(const uchar_t *, uchar_t *, int,
6487c478bd9Sstevel@tonic-gate     const uchar_t **, const uchar_t **);
6497c478bd9Sstevel@tonic-gate int		ns_name_uncompress(const uchar_t *, const uchar_t *,
6507c478bd9Sstevel@tonic-gate 					const uchar_t *, char *, size_t);
6517c478bd9Sstevel@tonic-gate int		ns_name_compress(const char *, uchar_t *, size_t,
6527c478bd9Sstevel@tonic-gate 			const uchar_t **, const uchar_t **);
6537c478bd9Sstevel@tonic-gate int		ns_name_skip(const uchar_t **, const uchar_t *);
6547c478bd9Sstevel@tonic-gate void	ns_name_rollback(const uchar_t *, const uchar_t **,
6557c478bd9Sstevel@tonic-gate 			const uchar_t **);
6569525b14bSRao Shoaib ssize_t		ns_name_length(ns_nname_ct, size_t);
6579525b14bSRao Shoaib int		ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t);
6589525b14bSRao Shoaib int		ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int);
6599525b14bSRao Shoaib int		ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int);
6609525b14bSRao Shoaib int		ns_name_labels(ns_nname_ct, size_t);
6617c478bd9Sstevel@tonic-gate int		ns_sign(uchar_t *, int *, int, int, void *,
6627c478bd9Sstevel@tonic-gate 			const uchar_t *, int, uchar_t *, int *, time_t);
6637c478bd9Sstevel@tonic-gate int		ns_sign2(uchar_t *, int *, int, int, void *,
6647c478bd9Sstevel@tonic-gate 			const uchar_t *, int, uchar_t *, int *, time_t,
6657c478bd9Sstevel@tonic-gate 			uchar_t **, uchar_t **);
6667c478bd9Sstevel@tonic-gate int		ns_sign_tcp(uchar_t *, int *, int, int,
6677c478bd9Sstevel@tonic-gate 			ns_tcp_tsig_state *, int);
6687c478bd9Sstevel@tonic-gate int		ns_sign_tcp2(uchar_t *, int *, int, int,
6697c478bd9Sstevel@tonic-gate 			ns_tcp_tsig_state *, int,
6707c478bd9Sstevel@tonic-gate 			uchar_t **, uchar_t **);
6717c478bd9Sstevel@tonic-gate int		ns_sign_tcp_init(void *, const uchar_t *, int,
6727c478bd9Sstevel@tonic-gate 					ns_tcp_tsig_state *);
6737c478bd9Sstevel@tonic-gate uchar_t		*ns_find_tsig(uchar_t *, uchar_t *);
6747c478bd9Sstevel@tonic-gate int		ns_verify(uchar_t *, int *, void *,
6757c478bd9Sstevel@tonic-gate 			const uchar_t *, int, uchar_t *, int *,
6767c478bd9Sstevel@tonic-gate 			time_t *, int);
6777c478bd9Sstevel@tonic-gate int		ns_verify_tcp(uchar_t *, int *, ns_tcp_tsig_state *, int);
6787c478bd9Sstevel@tonic-gate int		ns_verify_tcp_init(void *, const uchar_t *, int,
6797c478bd9Sstevel@tonic-gate 					ns_tcp_tsig_state *);
6807c478bd9Sstevel@tonic-gate int		ns_samedomain(const char *, const char *);
6817c478bd9Sstevel@tonic-gate int		ns_subdomain(const char *, const char *);
6827c478bd9Sstevel@tonic-gate int		ns_makecanon(const char *, char *, size_t);
6837c478bd9Sstevel@tonic-gate int		ns_samename(const char *, const char *);
6849525b14bSRao Shoaib int		ns_newmsg_init(uchar_t *buffer, size_t bufsiz, ns_newmsg *);
6859525b14bSRao Shoaib int		ns_newmsg_copy(ns_newmsg *, ns_msg *);
6869525b14bSRao Shoaib void		ns_newmsg_id(ns_newmsg *handle, uint16_t id);
6879525b14bSRao Shoaib void		ns_newmsg_flag(ns_newmsg *handle, ns_flag flag, uint_t value);
6889525b14bSRao Shoaib int		ns_newmsg_q(ns_newmsg *handle, ns_nname_ct qname,
6899525b14bSRao Shoaib 			    ns_type qtype, ns_class qclass);
6909525b14bSRao Shoaib int		ns_newmsg_rr(ns_newmsg *handle, ns_sect sect,
6919525b14bSRao Shoaib 			    ns_nname_ct name, ns_type type,
6929525b14bSRao Shoaib 			    ns_class rr_class, uint32_t ttl,
6939525b14bSRao Shoaib 			    uint16_t rdlen, const uchar_t *rdata);
6949525b14bSRao Shoaib size_t		ns_newmsg_done(ns_newmsg *handle);
6959525b14bSRao Shoaib ssize_t		ns_rdata_unpack(const uchar_t *, const uchar_t *, ns_type,
6969525b14bSRao Shoaib 				const uchar_t *, size_t, uchar_t *, size_t);
6979525b14bSRao Shoaib int		ns_rdata_equal(ns_type, const uchar_t *, size_t,
6989525b14bSRao Shoaib 				const uchar_t *, size_t);
6999525b14bSRao Shoaib int		ns_rdata_refers(ns_type,
7009525b14bSRao Shoaib 				const uchar_t *, size_t,
7019525b14bSRao Shoaib 				const uchar_t *);
7027c478bd9Sstevel@tonic-gate 
7037c478bd9Sstevel@tonic-gate #ifdef BIND_4_COMPAT
7047c478bd9Sstevel@tonic-gate #include <arpa/nameser_compat.h>
7057c478bd9Sstevel@tonic-gate #endif
7067c478bd9Sstevel@tonic-gate 
7077c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
7087c478bd9Sstevel@tonic-gate }
7097c478bd9Sstevel@tonic-gate #endif
7107c478bd9Sstevel@tonic-gate 
7117c478bd9Sstevel@tonic-gate #endif	/* !_ARPA_NAMESER_H */
712