sl@0: /* sl@0: * Copyright (c) 1983, 1989, 1993 sl@0: * The Regents of the University of California. All rights reserved. sl@0: * sl@0: * Redistribution and use in source and binary forms, with or without sl@0: * modification, are permitted provided that the following conditions sl@0: * are met: sl@0: * 1. Redistributions of source code must retain the above copyright sl@0: * notice, this list of conditions and the following disclaimer. sl@0: * 2. Redistributions in binary form must reproduce the above copyright sl@0: * notice, this list of conditions and the following disclaimer in the sl@0: * documentation and/or other materials provided with the distribution. sl@0: * 4. Neither the name of the University nor the names of its contributors sl@0: * may be used to endorse or promote products derived from this software sl@0: * without specific prior written permission. sl@0: * sl@0: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND sl@0: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE sl@0: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE sl@0: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE sl@0: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL sl@0: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS sl@0: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) sl@0: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT sl@0: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY sl@0: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF sl@0: * SUCH DAMAGE. sl@0: sl@0: sl@0: * Copyright (c) 1996 by Internet Software Consortium. sl@0: * sl@0: * Permission to use, copy, modify, and distribute this software for any sl@0: * purpose with or without fee is hereby granted, provided that the above sl@0: * copyright notice and this permission notice appear in all copies. sl@0: * sl@0: * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS sl@0: * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES sl@0: * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE sl@0: * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL sl@0: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR sl@0: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS sl@0: * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS sl@0: * SOFTWARE. sl@0: * Portions Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. sl@0: */ sl@0: sl@0: /* sl@0: * From: Id: nameser.h,v 8.16 1998/02/06 00:35:58 halley Exp sl@0: * $FreeBSD: src/include/arpa/nameser.h,v 1.16 2002/03/23 17:24:55 imp Exp $ sl@0: */ sl@0: sl@0: #ifndef _ARPA_NAMESER_H_ sl@0: #define _ARPA_NAMESER_H_ sl@0: sl@0: #define BIND_4_COMPAT sl@0: sl@0: #include sl@0: #include sl@0: sl@0: /* sl@0: * revision information. this is the release date in YYYYMMDD format. sl@0: * it can change every day so the right thing to do with it is use it sl@0: * in preprocessor commands such as "#if (__NAMESER > 19931104)". do not sl@0: * compare for equality; rather, use it to determine whether your libnameser.a sl@0: * is new enough to contain a certain feature. sl@0: */ sl@0: sl@0: /* XXXRTH I made this bigger than __BIND in 4.9.5 T6B */ sl@0: #define __NAMESER 19961001 /* New interface version stamp. */ sl@0: sl@0: /* sl@0: * Define constants based on RFC 883, RFC 1034, RFC 1035 sl@0: */ sl@0: #define NS_PACKETSZ 512 /* maximum packet size */ sl@0: #define NS_MAXDNAME 1025 /* maximum domain name */ sl@0: #define NS_MAXCDNAME 255 /* maximum compressed domain name */ sl@0: #define NS_MAXLABEL 63 /* maximum length of domain label */ sl@0: #define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ sl@0: #define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ sl@0: #define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ sl@0: #define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */ sl@0: #define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */ sl@0: #define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */ sl@0: #define NS_INADDRSZ 4 /* IPv4 T_A */ sl@0: #define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */ sl@0: #define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ sl@0: #define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ sl@0: sl@0: /* sl@0: * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() sl@0: * in synch with it. sl@0: */ sl@0: typedef enum __ns_sect { sl@0: ns_s_qd = 0, /* Query: Question. */ sl@0: ns_s_zn = 0, /* Update: Zone. */ sl@0: ns_s_an = 1, /* Query: Answer. */ sl@0: ns_s_pr = 1, /* Update: Prerequisites. */ sl@0: ns_s_ns = 2, /* Query: Name servers. */ sl@0: ns_s_ud = 2, /* Update: Update. */ sl@0: ns_s_ar = 3, /* Query|Update: Additional records. */ sl@0: ns_s_max = 4 sl@0: } ns_sect; sl@0: sl@0: /* sl@0: * This is a message handle. It is caller allocated and has no dynamic data. sl@0: * This structure is intended to be opaque to all but ns_parse.c, thus the sl@0: * leading _'s on the member names. Use the accessor functions, not the _'s. sl@0: */ sl@0: typedef struct __ns_msg { sl@0: const u_char *_msg, *_eom; sl@0: u_int16_t _id, _flags, _counts[ns_s_max]; sl@0: const u_char *_sections[ns_s_max]; sl@0: ns_sect _sect; sl@0: int _rrnum; sl@0: const u_char *_ptr; sl@0: } ns_msg; sl@0: sl@0: /* Private data structure - do not use from outside library. */ sl@0: struct _ns_flagdata { int mask, shift; }; sl@0: extern struct _ns_flagdata _ns_flagdata[]; sl@0: sl@0: /* Accessor macros - this is part of the public interface. */ sl@0: #define ns_msg_getflag(handle, flag) ( \ sl@0: ((handle)._flags & _ns_flagdata[flag].mask) \ sl@0: >> _ns_flagdata[flag].shift \ sl@0: ) sl@0: #define ns_msg_id(handle) ((handle)._id + 0) sl@0: #define ns_msg_base(handle) ((handle)._msg + 0) sl@0: #define ns_msg_end(handle) ((handle)._eom + 0) sl@0: #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) sl@0: #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) sl@0: sl@0: /* sl@0: * This is a parsed record. It is caller allocated and has no dynamic data. sl@0: */ sl@0: typedef struct __ns_rr { sl@0: char name[NS_MAXDNAME]; /* XXX need to malloc */ sl@0: u_int16_t type; sl@0: u_int16_t rr_class; sl@0: u_int32_t ttl; sl@0: u_int16_t rdlength; sl@0: const u_char *rdata; sl@0: } ns_rr; sl@0: sl@0: /* Accessor macros - this is part of the public interface. */ sl@0: #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") sl@0: #define ns_rr_type(rr) ((rr).type + 0) sl@0: #define ns_rr_class(rr) ((rr).rr_class + 0) sl@0: #define ns_rr_ttl(rr) ((rr).ttl + 0) sl@0: #define ns_rr_rdlen(rr) ((rr).rdlength + 0) sl@0: #define ns_rr_rdata(rr) ((rr).rdata + 0) sl@0: sl@0: /* sl@0: * These don't have to be in the same order as in the packet flags word, sl@0: * and they can even overlap in some cases, but they will need to be kept sl@0: * in synch with ns_parse.c:ns_flagdata[]. sl@0: */ sl@0: typedef enum __ns_flag { sl@0: ns_f_qr, /* Question/Response. */ sl@0: ns_f_opcode, /* Operation code. */ sl@0: ns_f_aa, /* Authoritative Answer. */ sl@0: ns_f_tc, /* Truncation occurred. */ sl@0: ns_f_rd, /* Recursion Desired. */ sl@0: ns_f_ra, /* Recursion Available. */ sl@0: ns_f_z, /* MBZ. */ sl@0: ns_f_ad, /* Authentic Data (DNSSEC). */ sl@0: ns_f_cd, /* Checking Disabled (DNSSEC). */ sl@0: ns_f_rcode, /* Response code. */ sl@0: ns_f_max sl@0: } ns_flag; sl@0: sl@0: /* sl@0: * Currently defined opcodes. sl@0: */ sl@0: typedef enum __ns_opcode { sl@0: ns_o_query = 0, /* Standard query. */ sl@0: ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ sl@0: ns_o_status = 2, /* Name server status query (unsupported). */ sl@0: /* Opcode 3 is undefined/reserved. */ sl@0: ns_o_notify = 4, /* Zone change notification. */ sl@0: ns_o_update = 5, /* Zone update message. */ sl@0: ns_o_max = 6 sl@0: } ns_opcode; sl@0: sl@0: /* sl@0: * Currently defined response codes. sl@0: */ sl@0: typedef enum __ns_rcode { sl@0: ns_r_noerror = 0, /* No error occurred. */ sl@0: ns_r_formerr = 1, /* Format error. */ sl@0: ns_r_servfail = 2, /* Server failure. */ sl@0: ns_r_nxdomain = 3, /* Name error. */ sl@0: ns_r_notimpl = 4, /* Unimplemented. */ sl@0: ns_r_refused = 5, /* Operation refused. */ sl@0: /* these are for BIND_UPDATE */ sl@0: ns_r_yxdomain = 6, /* Name exists */ sl@0: ns_r_yxrrset = 7, /* RRset exists */ sl@0: ns_r_nxrrset = 8, /* RRset does not exist */ sl@0: ns_r_notauth = 9, /* Not authoritative for zone */ sl@0: ns_r_notzone = 10, /* Zone of record different from zone section */ sl@0: ns_r_max = 11 sl@0: } ns_rcode; sl@0: sl@0: /* BIND_UPDATE */ sl@0: typedef enum __ns_update_operation { sl@0: ns_uop_delete = 0, sl@0: ns_uop_add = 1, sl@0: ns_uop_max = 2 sl@0: } ns_update_operation; sl@0: sl@0: /* sl@0: * This RR-like structure is particular to UPDATE. sl@0: */ sl@0: struct ns_updrec { sl@0: struct ns_updrec *r_prev; /* prev record */ sl@0: struct ns_updrec *r_next; /* next record */ sl@0: u_int8_t r_section; /* ZONE/PREREQUISITE/UPDATE */ sl@0: char * r_dname; /* owner of the RR */ sl@0: u_int16_t r_class; /* class number */ sl@0: u_int16_t r_type; /* type number */ sl@0: u_int32_t r_ttl; /* time to live */ sl@0: u_char * r_data; /* rdata fields as text string */ sl@0: u_int16_t r_size; /* size of r_data field */ sl@0: int r_opcode; /* type of operation */ sl@0: /* following fields for private use by the resolver/server routines */ sl@0: struct ns_updrec *r_grpnext; /* next record when grouped */ sl@0: struct databuf *r_dp; /* databuf to process */ sl@0: struct databuf *r_deldp; /* databuf's deleted/overwritten */ sl@0: u_int16_t r_zone; /* zone number on server */ sl@0: }; sl@0: typedef struct ns_updrec ns_updrec; sl@0: sl@0: /* sl@0: * Currently defined type values for resources and queries. sl@0: */ sl@0: typedef enum __ns_type { sl@0: ns_t_a = 1, /* Host address. */ sl@0: ns_t_ns = 2, /* Authoritative server. */ sl@0: ns_t_md = 3, /* Mail destination. */ sl@0: ns_t_mf = 4, /* Mail forwarder. */ sl@0: ns_t_cname = 5, /* Canonical name. */ sl@0: ns_t_soa = 6, /* Start of authority zone. */ sl@0: ns_t_mb = 7, /* Mailbox domain name. */ sl@0: ns_t_mg = 8, /* Mail group member. */ sl@0: ns_t_mr = 9, /* Mail rename name. */ sl@0: ns_t_null = 10, /* Null resource record. */ sl@0: ns_t_wks = 11, /* Well known service. */ sl@0: ns_t_ptr = 12, /* Domain name pointer. */ sl@0: ns_t_hinfo = 13, /* Host information. */ sl@0: ns_t_minfo = 14, /* Mailbox information. */ sl@0: ns_t_mx = 15, /* Mail routing information. */ sl@0: ns_t_txt = 16, /* Text strings. */ sl@0: ns_t_rp = 17, /* Responsible person. */ sl@0: ns_t_afsdb = 18, /* AFS cell database. */ sl@0: ns_t_x25 = 19, /* X_25 calling address. */ sl@0: ns_t_isdn = 20, /* ISDN calling address. */ sl@0: ns_t_rt = 21, /* Router. */ sl@0: ns_t_nsap = 22, /* NSAP address. */ sl@0: ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ sl@0: ns_t_sig = 24, /* Security signature. */ sl@0: ns_t_key = 25, /* Security key. */ sl@0: ns_t_px = 26, /* X.400 mail mapping. */ sl@0: ns_t_gpos = 27, /* Geographical position (withdrawn). */ sl@0: ns_t_aaaa = 28, /* Ip6 Address. */ sl@0: ns_t_loc = 29, /* Location Information. */ sl@0: ns_t_nxt = 30, /* Next domain (security). */ sl@0: ns_t_eid = 31, /* Endpoint identifier. */ sl@0: ns_t_nimloc = 32, /* Nimrod Locator. */ sl@0: ns_t_srv = 33, /* Server Selection. */ sl@0: ns_t_atma = 34, /* ATM Address */ sl@0: ns_t_naptr = 35, /* Naming Authority PoinTeR */ sl@0: ns_t_opt = 41, /* OPT pseudo-RR, RFC2761 */ sl@0: /* Query type values which do not appear in resource records. */ sl@0: ns_t_ixfr = 251, /* Incremental zone transfer. */ sl@0: ns_t_axfr = 252, /* Transfer zone of authority. */ sl@0: ns_t_mailb = 253, /* Transfer mailbox records. */ sl@0: ns_t_maila = 254, /* Transfer mail agent records. */ sl@0: ns_t_any = 255, /* Wildcard match. */ sl@0: ns_t_max = 65536 sl@0: } ns_type; sl@0: sl@0: /* sl@0: * Values for class field sl@0: */ sl@0: typedef enum __ns_class { sl@0: ns_c_in = 1, /* Internet. */ sl@0: /* Class 2 unallocated/unsupported. */ sl@0: ns_c_chaos = 3, /* MIT Chaos-net. */ sl@0: ns_c_hs = 4, /* MIT Hesiod. */ sl@0: /* Query class values which do not appear in resource records */ sl@0: ns_c_none = 254, /* for prereq. sections in update requests */ sl@0: ns_c_any = 255, /* Wildcard match. */ sl@0: ns_c_max = 65536 sl@0: } ns_class; sl@0: sl@0: /* sl@0: * Flags field of the KEY RR rdata sl@0: */ sl@0: #define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */ sl@0: #define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */ sl@0: #define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */ sl@0: #define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */ sl@0: #define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */ sl@0: /* The type bits can also be interpreted independently, as single bits: */ sl@0: #define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */ sl@0: #define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */ sl@0: #define NS_KEY_EXPERIMENTAL 0x2000 /* Security is *mandatory* if bit=0 */ sl@0: #define NS_KEY_RESERVED3 0x1000 /* reserved - must be zero */ sl@0: #define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */ sl@0: #define NS_KEY_USERACCOUNT 0x0400 /* key is assoc. with a user acct */ sl@0: #define NS_KEY_ENTITY 0x0200 /* key is assoc. with entity eg host */ sl@0: #define NS_KEY_ZONEKEY 0x0100 /* key is zone key */ sl@0: #define NS_KEY_IPSEC 0x0080 /* key is for IPSEC (host or user)*/ sl@0: #define NS_KEY_EMAIL 0x0040 /* key is for email (MIME security) */ sl@0: #define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */ sl@0: #define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */ sl@0: #define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */ sl@0: sl@0: #define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED3 | \ sl@0: NS_KEY_RESERVED4 | \ sl@0: NS_KEY_RESERVED10 | \ sl@0: NS_KEY_RESERVED11 ) sl@0: sl@0: /* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */ sl@0: #define NS_ALG_MD5RSA 1 /* MD5 with RSA */ sl@0: #define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */ sl@0: #define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */ sl@0: sl@0: /* Signatures */ sl@0: #define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */ sl@0: #define NS_MD5RSA_MAX_BITS 2552 sl@0: /* Total of binary mod and exp */ sl@0: #define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3) sl@0: /* Max length of text sig block */ sl@0: #define NS_MD5RSA_MAX_BASE64 (((NS_MD5RSA_MAX_BYTES+2)/3)*4) sl@0: sl@0: /* Offsets into SIG record rdata to find various values */ sl@0: #define NS_SIG_TYPE 0 /* Type flags */ sl@0: #define NS_SIG_ALG 2 /* Algorithm */ sl@0: #define NS_SIG_LABELS 3 /* How many labels in name */ sl@0: #define NS_SIG_OTTL 4 /* Original TTL */ sl@0: #define NS_SIG_EXPIR 8 /* Expiration time */ sl@0: #define NS_SIG_SIGNED 12 /* Signature time */ sl@0: #define NS_SIG_FOOT 16 /* Key footprint */ sl@0: #define NS_SIG_SIGNER 18 /* Domain name of who signed it */ sl@0: sl@0: /* How RR types are represented as bit-flags in NXT records */ sl@0: #define NS_NXT_BITS 8 sl@0: #define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS))) sl@0: #define NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS))) sl@0: #define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS))) sl@0: sl@0: sl@0: /* sl@0: * Inline versions of get/put short/long. Pointer is advanced. sl@0: */ sl@0: #define NS_GET16(s, cp) { \ sl@0: register u_char *t_cp = (u_char *)(cp); \ sl@0: (s) = ((u_int16_t)t_cp[0] << 8) \ sl@0: | ((u_int16_t)t_cp[1]) \ sl@0: ; \ sl@0: (cp) += NS_INT16SZ; \ sl@0: } sl@0: sl@0: #define NS_GET32(l, cp) { \ sl@0: register u_char *t_cp = (u_char *)(cp); \ sl@0: (l) = ((u_int32_t)t_cp[0] << 24) \ sl@0: | ((u_int32_t)t_cp[1] << 16) \ sl@0: | ((u_int32_t)t_cp[2] << 8) \ sl@0: | ((u_int32_t)t_cp[3]) \ sl@0: ; \ sl@0: (cp) += NS_INT32SZ; \ sl@0: } sl@0: sl@0: #define NS_PUT16(s, cp) { \ sl@0: register u_int16_t t_s = (u_int16_t)(s); \ sl@0: register u_char *t_cp = (u_char *)(cp); \ sl@0: *t_cp++ = t_s >> 8; \ sl@0: *t_cp = t_s; \ sl@0: (cp) += NS_INT16SZ; \ sl@0: } sl@0: sl@0: #define NS_PUT32(l, cp) { \ sl@0: register u_int32_t t_l = (u_int32_t)(l); \ sl@0: register u_char *t_cp = (u_char *)(cp); \ sl@0: *t_cp++ = t_l >> 24; \ sl@0: *t_cp++ = t_l >> 16; \ sl@0: *t_cp++ = t_l >> 8; \ sl@0: *t_cp = t_l; \ sl@0: (cp) += NS_INT32SZ; \ sl@0: } sl@0: sl@0: /* sl@0: * ANSI C identifier hiding. sl@0: */ sl@0: #define ns_get16 __ns_get16 sl@0: #define ns_get32 __ns_get32 sl@0: #define ns_put16 __ns_put16 sl@0: #define ns_put32 __ns_put32 sl@0: #define ns_initparse __ns_initparse sl@0: #define ns_parserr __ns_parserr sl@0: #define ns_sprintrr __ns_sprintrr sl@0: #define ns_sprintrrf __ns_sprintrrf sl@0: #define ns_format_ttl __ns_format_ttl sl@0: #define ns_parse_ttl __ns_parse_ttl sl@0: #define ns_name_ntop __ns_name_ntop sl@0: #define ns_name_pton __ns_name_pton sl@0: #define ns_name_unpack __ns_name_unpack sl@0: #define ns_name_pack __ns_name_pack sl@0: #define ns_name_compress __ns_name_compress sl@0: #define ns_name_uncompress __ns_name_uncompress sl@0: sl@0: #ifdef BIND_4_COMPAT sl@0: #include sl@0: #endif sl@0: sl@0: #endif /* !_ARPA_NAMESER_H_ */