| /* |
| * Copyright (c) 1983, 1989, 1993 |
| * 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. |
| * 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. |
| */ |
| |
| /* |
| * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") |
| * 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. |
| */ |
| |
| #ifndef _ARPA_NAMESER_H_ |
| #define _ARPA_NAMESER_H_ |
| |
| #include <sys/param.h> |
| #include <sys/types.h> |
| #include <stdint.h> |
| |
| /* |
| * Define constants based on RFC 883, RFC 1034, RFC 1035 |
| */ |
| #define NS_PACKETSZ 512 /*%< default UDP packet size */ |
| #define NS_MAXDNAME 1025 /*%< maximum domain name */ |
| #define NS_MAXMSG 65535 /*%< maximum message size */ |
| #define NS_MAXCDNAME 255 /*%< maximum compressed domain name */ |
| #define NS_MAXLABEL 63 /*%< maximum length of domain label */ |
| #define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */ |
| #define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */ |
| #define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */ |
| #define NS_INT32SZ 4 /*%< #/bytes of data in a uint32_t */ |
| #define NS_INT16SZ 2 /*%< #/bytes of data in a uint16_t */ |
| #define NS_INT8SZ 1 /*%< #/bytes of data in a uint8_t */ |
| #define NS_INADDRSZ 4 /*%< IPv4 T_A */ |
| #define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */ |
| #define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */ |
| #define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */ |
| /* |
| * These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord() |
| * in synch with it. |
| */ |
| typedef enum __ns_sect { |
| ns_s_qd = 0, /*%< Query: Question. */ |
| ns_s_zn = 0, /*%< Update: Zone. */ |
| ns_s_an = 1, /*%< Query: Answer. */ |
| ns_s_pr = 1, /*%< Update: Prerequisites. */ |
| ns_s_ns = 2, /*%< Query: Name servers. */ |
| ns_s_ud = 2, /*%< Update: Update. */ |
| ns_s_ar = 3, /*%< Query|Update: Additional records. */ |
| ns_s_max = 4 |
| } ns_sect; |
| |
| /*% |
| * This is a message handle. It is caller allocated and has no dynamic data. |
| * This structure is intended to be opaque to all but ns_parse.c, thus the |
| * leading _'s on the member names. Use the accessor functions, not the _'s. |
| */ |
| typedef struct __ns_msg { |
| const unsigned char *_msg, *_eom; |
| uint16_t _id, _flags, _counts[ns_s_max]; |
| const unsigned char *_sections[ns_s_max]; |
| ns_sect _sect; |
| int _rrnum; |
| const unsigned char *_msg_ptr; |
| } ns_msg; |
| |
| /* Private data structure - do not use from outside library. */ |
| struct _ns_flagdata { int mask, shift; }; |
| extern const struct _ns_flagdata _ns_flagdata[]; |
| |
| /* Accessor macros - this is part of the public interface. */ |
| |
| #define ns_msg_id(handle) ((handle)._id + 0) |
| #define ns_msg_base(handle) ((handle)._msg + 0) |
| #define ns_msg_end(handle) ((handle)._eom + 0) |
| #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) |
| #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) |
| |
| /*% |
| * This is a parsed record. It is caller allocated and has no dynamic data. |
| */ |
| typedef struct __ns_rr { |
| char name[NS_MAXDNAME]; |
| uint16_t type; |
| uint16_t rr_class; |
| uint32_t ttl; |
| uint16_t rdlength; |
| const unsigned char * rdata; |
| } ns_rr; |
| |
| /* Accessor macros - this is part of the public interface. */ |
| #define ns_rr_name(rr) (((rr).name[0] != '\0') ? (rr).name : ".") |
| #define ns_rr_type(rr) ((ns_type)((rr).type + 0)) |
| #define ns_rr_class(rr) ((ns_class)((rr).rr_class + 0)) |
| #define ns_rr_ttl(rr) ((rr).ttl + 0) |
| #define ns_rr_rdlen(rr) ((rr).rdlength + 0) |
| #define ns_rr_rdata(rr) ((rr).rdata + 0) |
| |
| /*% |
| * These don't have to be in the same order as in the packet flags word, |
| * and they can even overlap in some cases, but they will need to be kept |
| * in synch with ns_parse.c:ns_flagdata[]. |
| */ |
| typedef enum __ns_flag { |
| ns_f_qr, /*%< Question/Response. */ |
| ns_f_opcode, /*%< Operation code. */ |
| ns_f_aa, /*%< Authoritative Answer. */ |
| ns_f_tc, /*%< Truncation occurred. */ |
| ns_f_rd, /*%< Recursion Desired. */ |
| ns_f_ra, /*%< Recursion Available. */ |
| ns_f_z, /*%< MBZ. */ |
| ns_f_ad, /*%< Authentic Data (DNSSEC). */ |
| ns_f_cd, /*%< Checking Disabled (DNSSEC). */ |
| ns_f_rcode, /*%< Response code. */ |
| ns_f_max |
| } ns_flag; |
| |
| /*% |
| * Currently defined opcodes. |
| */ |
| typedef enum __ns_opcode { |
| ns_o_query = 0, /*%< Standard query. */ |
| ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */ |
| ns_o_status = 2, /*%< Name server status query (unsupported). */ |
| /* Opcode 3 is undefined/reserved. */ |
| ns_o_notify = 4, /*%< Zone change notification. */ |
| ns_o_update = 5, /*%< Zone update message. */ |
| ns_o_max = 6 |
| } ns_opcode; |
| |
| /*% |
| * Currently defined response codes. |
| */ |
| typedef enum __ns_rcode { |
| ns_r_noerror = 0, /*%< No error occurred. */ |
| ns_r_formerr = 1, /*%< Format error. */ |
| ns_r_servfail = 2, /*%< Server failure. */ |
| ns_r_nxdomain = 3, /*%< Name error. */ |
| ns_r_notimpl = 4, /*%< Unimplemented. */ |
| ns_r_refused = 5, /*%< Operation refused. */ |
| /* these are for BIND_UPDATE */ |
| ns_r_yxdomain = 6, /*%< Name exists */ |
| ns_r_yxrrset = 7, /*%< RRset exists */ |
| ns_r_nxrrset = 8, /*%< RRset does not exist */ |
| ns_r_notauth = 9, /*%< Not authoritative for zone */ |
| ns_r_notzone = 10, /*%< Zone of record different from zone section */ |
| ns_r_max = 11, |
| /* The following are EDNS extended rcodes */ |
| ns_r_badvers = 16, |
| /* The following are TSIG errors */ |
| ns_r_badsig = 16, |
| ns_r_badkey = 17, |
| ns_r_badtime = 18 |
| } ns_rcode; |
| |
| /* BIND_UPDATE */ |
| typedef enum __ns_update_operation { |
| ns_uop_delete = 0, |
| ns_uop_add = 1, |
| ns_uop_max = 2 |
| } ns_update_operation; |
| |
| /*% |
| * This structure is used for TSIG authenticated messages |
| */ |
| struct ns_tsig_key { |
| char name[NS_MAXDNAME], alg[NS_MAXDNAME]; |
| unsigned char *data; |
| int len; |
| }; |
| typedef struct ns_tsig_key ns_tsig_key; |
| |
| /*% |
| * This structure is used for TSIG authenticated TCP messages |
| */ |
| struct ns_tcp_tsig_state { |
| int counter; |
| struct dst_key *key; |
| void *ctx; |
| unsigned char sig[NS_PACKETSZ]; |
| int siglen; |
| }; |
| typedef struct ns_tcp_tsig_state ns_tcp_tsig_state; |
| |
| #define NS_TSIG_FUDGE 300 |
| #define NS_TSIG_TCP_COUNT 100 |
| #define NS_TSIG_ALG_HMAC_MD5 "HMAC-MD5.SIG-ALG.REG.INT" |
| |
| #define NS_TSIG_ERROR_NO_TSIG -10 |
| #define NS_TSIG_ERROR_NO_SPACE -11 |
| #define NS_TSIG_ERROR_FORMERR -12 |
| |
| /*% |
| * Currently defined type values for resources and queries. |
| */ |
| typedef enum __ns_type |
| { |
| ns_t_invalid = 0, |
| |
| ns_t_a = 1, |
| ns_t_ns = 2, |
| ns_t_md = 3, |
| ns_t_mf = 4, |
| ns_t_cname = 5, |
| ns_t_soa = 6, |
| ns_t_mb = 7, |
| ns_t_mg = 8, |
| ns_t_mr = 9, |
| ns_t_null = 10, |
| ns_t_wks = 11, |
| ns_t_ptr = 12, |
| ns_t_hinfo = 13, |
| ns_t_minfo = 14, |
| ns_t_mx = 15, |
| ns_t_txt = 16, |
| ns_t_rp = 17, |
| ns_t_afsdb = 18, |
| ns_t_x25 = 19, |
| ns_t_isdn = 20, |
| ns_t_rt = 21, |
| ns_t_nsap = 22, |
| ns_t_nsap_ptr = 23, |
| ns_t_sig = 24, |
| ns_t_key = 25, |
| ns_t_px = 26, |
| ns_t_gpos = 27, |
| ns_t_aaaa = 28, |
| ns_t_loc = 29, |
| ns_t_nxt = 30, |
| ns_t_eid = 31, |
| ns_t_nimloc = 32, |
| ns_t_srv = 33, |
| ns_t_atma = 34, |
| ns_t_naptr = 35, |
| ns_t_kx = 36, |
| ns_t_cert = 37, |
| ns_t_a6 = 38, |
| ns_t_dname = 39, |
| ns_t_sink = 40, |
| ns_t_opt = 41, |
| ns_t_apl = 42, |
| ns_t_ds = 43, |
| ns_t_sshfp = 44, |
| ns_t_ipseckey = 45, |
| ns_t_rrsig = 46, |
| ns_t_nsec = 47, |
| ns_t_dnskey = 48, |
| ns_t_dhcid = 49, |
| ns_t_nsec3 = 50, |
| ns_t_nsec3param = 51, |
| ns_t_tlsa = 52, |
| ns_t_smimea = 53, |
| ns_t_hip = 55, |
| ns_t_ninfo = 56, |
| ns_t_rkey = 57, |
| ns_t_talink = 58, |
| ns_t_cds = 59, |
| ns_t_cdnskey = 60, |
| ns_t_openpgpkey = 61, |
| ns_t_csync = 62, |
| ns_t_spf = 99, |
| ns_t_uinfo = 100, |
| ns_t_uid = 101, |
| ns_t_gid = 102, |
| ns_t_unspec = 103, |
| ns_t_nid = 104, |
| ns_t_l32 = 105, |
| ns_t_l64 = 106, |
| ns_t_lp = 107, |
| ns_t_eui48 = 108, |
| ns_t_eui64 = 109, |
| ns_t_tkey = 249, |
| ns_t_tsig = 250, |
| ns_t_ixfr = 251, |
| ns_t_axfr = 252, |
| ns_t_mailb = 253, |
| ns_t_maila = 254, |
| ns_t_any = 255, |
| ns_t_uri = 256, |
| ns_t_caa = 257, |
| ns_t_avc = 258, |
| ns_t_ta = 32768, |
| ns_t_dlv = 32769, |
| |
| ns_t_max = 65536 |
| } ns_type; |
| |
| /*% |
| * Values for class field |
| */ |
| typedef enum __ns_class { |
| ns_c_invalid = 0, /*%< Cookie. */ |
| ns_c_in = 1, /*%< Internet. */ |
| ns_c_2 = 2, /*%< unallocated/unsupported. */ |
| ns_c_chaos = 3, /*%< MIT Chaos-net. */ |
| ns_c_hs = 4, /*%< MIT Hesiod. */ |
| /* Query class values which do not appear in resource records */ |
| ns_c_none = 254, /*%< for prereq. sections in update requests */ |
| ns_c_any = 255, /*%< Wildcard match. */ |
| ns_c_max = 65536 |
| } ns_class; |
| |
| /* Certificate type values in CERT resource records. */ |
| typedef enum __ns_cert_types { |
| cert_t_pkix = 1, /*%< PKIX (X.509v3) */ |
| cert_t_spki = 2, /*%< SPKI */ |
| cert_t_pgp = 3, /*%< PGP */ |
| cert_t_url = 253, /*%< URL private type */ |
| cert_t_oid = 254 /*%< OID private type */ |
| } ns_cert_types; |
| |
| /*% |
| * EDNS0 extended flags and option codes, host order. |
| */ |
| #define NS_OPT_DNSSEC_OK 0x8000U |
| #define NS_OPT_NSID 3 |
| |
| /*% |
| * Inline versions of get/put short/long. Pointer is advanced. |
| */ |
| #define NS_GET16(s, cp) do { \ |
| const unsigned char *t_cp = (const unsigned char *)(cp); \ |
| (s) = ((uint16_t)t_cp[0] << 8) \ |
| | ((uint16_t)t_cp[1]) \ |
| ; \ |
| (cp) += NS_INT16SZ; \ |
| } while (0) |
| |
| #define NS_GET32(l, cp) do { \ |
| const unsigned char *t_cp = (const unsigned char *)(cp); \ |
| (l) = ((uint32_t)t_cp[0] << 24) \ |
| | ((uint32_t)t_cp[1] << 16) \ |
| | ((uint32_t)t_cp[2] << 8) \ |
| | ((uint32_t)t_cp[3]) \ |
| ; \ |
| (cp) += NS_INT32SZ; \ |
| } while (0) |
| |
| #define NS_PUT16(s, cp) do { \ |
| uint16_t t_s = (uint16_t)(s); \ |
| unsigned char *t_cp = (unsigned char *)(cp); \ |
| *t_cp++ = t_s >> 8; \ |
| *t_cp = t_s; \ |
| (cp) += NS_INT16SZ; \ |
| } while (0) |
| |
| #define NS_PUT32(l, cp) do { \ |
| uint32_t t_l = (uint32_t)(l); \ |
| unsigned char *t_cp = (unsigned char *)(cp); \ |
| *t_cp++ = t_l >> 24; \ |
| *t_cp++ = t_l >> 16; \ |
| *t_cp++ = t_l >> 8; \ |
| *t_cp = t_l; \ |
| (cp) += NS_INT32SZ; \ |
| } while (0) |
| |
| __BEGIN_DECLS |
| int ns_msg_getflag (ns_msg, int) __THROW; |
| unsigned int ns_get16 (const unsigned char *) __THROW; |
| unsigned long ns_get32 (const unsigned char *) __THROW; |
| void ns_put16 (unsigned int, unsigned char *) __THROW; |
| void ns_put32 (unsigned long, unsigned char *) __THROW; |
| int ns_initparse (const unsigned char *, int, ns_msg *) __THROW; |
| int ns_skiprr (const unsigned char *, const unsigned char *, |
| ns_sect, int) __THROW; |
| int ns_parserr (ns_msg *, ns_sect, int, ns_rr *) __THROW; |
| int ns_sprintrr (const ns_msg *, const ns_rr *, |
| const char *, const char *, char *, size_t) |
| __THROW; |
| int ns_sprintrrf (const unsigned char *, size_t, const char *, |
| ns_class, ns_type, unsigned long, |
| const unsigned char *, size_t, const char *, |
| const char *, char *, size_t) __THROW; |
| int ns_format_ttl (unsigned long, char *, size_t) __THROW; |
| int ns_parse_ttl (const char *, unsigned long *) __THROW; |
| uint32_t ns_datetosecs (const char *, int *) __THROW; |
| int ns_name_ntol (const unsigned char *, unsigned char *, size_t) |
| __THROW; |
| int ns_name_ntop (const unsigned char *, char *, size_t) __THROW; |
| int ns_name_pton (const char *, unsigned char *, size_t) __THROW; |
| int ns_name_unpack (const unsigned char *, const unsigned char *, |
| const unsigned char *, unsigned char *, size_t) |
| __THROW; |
| int ns_name_pack (const unsigned char *, unsigned char *, int, |
| const unsigned char **, const unsigned char **) |
| __THROW; |
| int ns_name_uncompress (const unsigned char *, |
| const unsigned char *, |
| const unsigned char *, |
| char *, size_t) __THROW; |
| int ns_name_compress (const char *, unsigned char *, size_t, |
| const unsigned char **, |
| const unsigned char **) __THROW; |
| int ns_name_skip (const unsigned char **, const unsigned char *) |
| __THROW; |
| void ns_name_rollback (const unsigned char *, |
| const unsigned char **, |
| const unsigned char **) __THROW; |
| int ns_samedomain (const char *, const char *) __THROW; |
| int ns_subdomain (const char *, const char *) __THROW; |
| int ns_makecanon (const char *, char *, size_t) __THROW; |
| int ns_samename (const char *, const char *) __THROW; |
| __END_DECLS |
| |
| #include <arpa/nameser_compat.h> |
| |
| #endif /* !_ARPA_NAMESER_H_ */ |
| /*! \file */ |