141c99275SPeter Avalos /* 241c99275SPeter Avalos * Copyright (c) 1983, 1989, 1993 341c99275SPeter Avalos * The Regents of the University of California. All rights reserved. 441c99275SPeter Avalos * 541c99275SPeter Avalos * Redistribution and use in source and binary forms, with or without 641c99275SPeter Avalos * modification, are permitted provided that the following conditions 741c99275SPeter Avalos * are met: 841c99275SPeter Avalos * 1. Redistributions of source code must retain the above copyright 941c99275SPeter Avalos * notice, this list of conditions and the following disclaimer. 1041c99275SPeter Avalos * 2. Redistributions in binary form must reproduce the above copyright 1141c99275SPeter Avalos * notice, this list of conditions and the following disclaimer in the 1241c99275SPeter Avalos * documentation and/or other materials provided with the distribution. 1341c99275SPeter Avalos * 3. All advertising materials mentioning features or use of this software 1441c99275SPeter Avalos * must display the following acknowledgement: 1541c99275SPeter Avalos * This product includes software developed by the University of 1641c99275SPeter Avalos * California, Berkeley and its contributors. 1741c99275SPeter Avalos * 4. Neither the name of the University nor the names of its contributors 1841c99275SPeter Avalos * may be used to endorse or promote products derived from this software 1941c99275SPeter Avalos * without specific prior written permission. 2041c99275SPeter Avalos * 2141c99275SPeter Avalos * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2241c99275SPeter Avalos * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2341c99275SPeter Avalos * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2441c99275SPeter Avalos * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2541c99275SPeter Avalos * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2641c99275SPeter Avalos * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2741c99275SPeter Avalos * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2841c99275SPeter Avalos * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2941c99275SPeter Avalos * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3041c99275SPeter Avalos * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3141c99275SPeter Avalos * SUCH DAMAGE. 3241c99275SPeter Avalos * 3341c99275SPeter Avalos * @(#)nameser.h 8.2 (Berkeley) 2/16/94 3441c99275SPeter Avalos * - 3541c99275SPeter Avalos * Portions Copyright (c) 1993 by Digital Equipment Corporation. 3641c99275SPeter Avalos * 3741c99275SPeter Avalos * Permission to use, copy, modify, and distribute this software for any 3841c99275SPeter Avalos * purpose with or without fee is hereby granted, provided that the above 3941c99275SPeter Avalos * copyright notice and this permission notice appear in all copies, and that 4041c99275SPeter Avalos * the name of Digital Equipment Corporation not be used in advertising or 4141c99275SPeter Avalos * publicity pertaining to distribution of the document or software without 4241c99275SPeter Avalos * specific, written prior permission. 4341c99275SPeter Avalos * 4441c99275SPeter Avalos * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 4541c99275SPeter Avalos * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 4641c99275SPeter Avalos * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 4741c99275SPeter Avalos * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 4841c99275SPeter Avalos * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 4941c99275SPeter Avalos * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 5041c99275SPeter Avalos * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 5141c99275SPeter Avalos * SOFTWARE. 5241c99275SPeter Avalos * - 5341c99275SPeter Avalos * --Copyright-- 5441c99275SPeter Avalos */ 5541c99275SPeter Avalos 5641c99275SPeter Avalos #ifndef _NAMESER_H_ 5741c99275SPeter Avalos #define _NAMESER_H_ 5841c99275SPeter Avalos 5941c99275SPeter Avalos #include <sys/types.h> 6041c99275SPeter Avalos 6141c99275SPeter Avalos /* 6241c99275SPeter Avalos * Define constants based on rfc883 6341c99275SPeter Avalos */ 6441c99275SPeter Avalos #define PACKETSZ 512 /* maximum packet size */ 6541c99275SPeter Avalos #define MAXDNAME 256 /* maximum domain name */ 6641c99275SPeter Avalos #define MAXCDNAME 255 /* maximum compressed domain name */ 6741c99275SPeter Avalos #define MAXLABEL 63 /* maximum length of domain label */ 6841c99275SPeter Avalos /* Number of bytes of fixed size data in query structure */ 6941c99275SPeter Avalos #define QFIXEDSZ 4 7041c99275SPeter Avalos /* number of bytes of fixed size data in resource record */ 7141c99275SPeter Avalos #define RRFIXEDSZ 10 7241c99275SPeter Avalos 7341c99275SPeter Avalos /* 7441c99275SPeter Avalos * Currently defined opcodes 7541c99275SPeter Avalos */ 7641c99275SPeter Avalos #define QUERY 0x0 /* standard query */ 7741c99275SPeter Avalos #define IQUERY 0x1 /* inverse query */ 7841c99275SPeter Avalos #define STATUS 0x2 /* nameserver status query */ 7941c99275SPeter Avalos #if 0 8041c99275SPeter Avalos #define xxx 0x3 /* 0x3 reserved */ 8141c99275SPeter Avalos #endif 8241c99275SPeter Avalos /* non standard - supports ALLOW_UPDATES stuff from Mike Schwartz */ 8341c99275SPeter Avalos #define UPDATEA 0x9 /* add resource record */ 8441c99275SPeter Avalos #define UPDATED 0xa /* delete a specific resource record */ 8541c99275SPeter Avalos #define UPDATEDA 0xb /* delete all named resource record */ 8641c99275SPeter Avalos #define UPDATEM 0xc /* modify a specific resource record */ 8741c99275SPeter Avalos #define UPDATEMA 0xd /* modify all named resource record */ 8841c99275SPeter Avalos 8941c99275SPeter Avalos #define ZONEINIT 0xe /* initial zone transfer */ 9041c99275SPeter Avalos #define ZONEREF 0xf /* incremental zone referesh */ 9141c99275SPeter Avalos 9241c99275SPeter Avalos /* 9341c99275SPeter Avalos * Undefine various #defines from various System V-flavored OSes (Solaris, 9441c99275SPeter Avalos * SINIX, HP-UX) so the compiler doesn't whine that we redefine them. 9541c99275SPeter Avalos */ 9641c99275SPeter Avalos #ifdef T_NULL 9741c99275SPeter Avalos #undef T_NULL 9841c99275SPeter Avalos #endif 9941c99275SPeter Avalos #ifdef T_OPT 10041c99275SPeter Avalos #undef T_OPT 10141c99275SPeter Avalos #endif 10241c99275SPeter Avalos #ifdef T_UNSPEC 10341c99275SPeter Avalos #undef T_UNSPEC 10441c99275SPeter Avalos #endif 10541c99275SPeter Avalos #ifdef NOERROR 10641c99275SPeter Avalos #undef NOERROR 10741c99275SPeter Avalos #endif 10841c99275SPeter Avalos 10941c99275SPeter Avalos /* 11041c99275SPeter Avalos * Currently defined response codes 11141c99275SPeter Avalos */ 11241c99275SPeter Avalos #define NOERROR 0 /* no error */ 11341c99275SPeter Avalos #define FORMERR 1 /* format error */ 11441c99275SPeter Avalos #define SERVFAIL 2 /* server failure */ 11541c99275SPeter Avalos #define NXDOMAIN 3 /* non existent domain */ 11641c99275SPeter Avalos #define NOTIMP 4 /* not implemented */ 11741c99275SPeter Avalos #define REFUSED 5 /* query refused */ 11841c99275SPeter Avalos /* non standard */ 11941c99275SPeter Avalos #define NOCHANGE 0xf /* update failed to change db */ 12041c99275SPeter Avalos 12141c99275SPeter Avalos /* 12241c99275SPeter Avalos * Type values for resources and queries 12341c99275SPeter Avalos */ 12441c99275SPeter Avalos #define T_A 1 /* host address */ 12541c99275SPeter Avalos #define T_NS 2 /* authoritative server */ 12641c99275SPeter Avalos #define T_MD 3 /* mail destination */ 12741c99275SPeter Avalos #define T_MF 4 /* mail forwarder */ 12841c99275SPeter Avalos #define T_CNAME 5 /* connonical name */ 12941c99275SPeter Avalos #define T_SOA 6 /* start of authority zone */ 13041c99275SPeter Avalos #define T_MB 7 /* mailbox domain name */ 13141c99275SPeter Avalos #define T_MG 8 /* mail group member */ 13241c99275SPeter Avalos #define T_MR 9 /* mail rename name */ 13341c99275SPeter Avalos #define T_NULL 10 /* null resource record */ 13441c99275SPeter Avalos #define T_WKS 11 /* well known service */ 13541c99275SPeter Avalos #define T_PTR 12 /* domain name pointer */ 13641c99275SPeter Avalos #define T_HINFO 13 /* host information */ 13741c99275SPeter Avalos #define T_MINFO 14 /* mailbox information */ 13841c99275SPeter Avalos #define T_MX 15 /* mail routing information */ 13941c99275SPeter Avalos #define T_TXT 16 /* text strings */ 14041c99275SPeter Avalos #define T_RP 17 /* responsible person */ 14141c99275SPeter Avalos #define T_AFSDB 18 /* AFS cell database */ 14241c99275SPeter Avalos #define T_X25 19 /* X_25 calling address */ 14341c99275SPeter Avalos #define T_ISDN 20 /* ISDN calling address */ 14441c99275SPeter Avalos #define T_RT 21 /* router */ 14541c99275SPeter Avalos #define T_NSAP 22 /* NSAP address */ 14641c99275SPeter Avalos #define T_NSAP_PTR 23 /* reverse lookup for NSAP */ 14741c99275SPeter Avalos #define T_SIG 24 /* security signature */ 14841c99275SPeter Avalos #define T_KEY 25 /* security key */ 14941c99275SPeter Avalos #define T_PX 26 /* X.400 mail mapping */ 15041c99275SPeter Avalos #define T_GPOS 27 /* geographical position (withdrawn) */ 15141c99275SPeter Avalos #define T_AAAA 28 /* IP6 Address */ 15241c99275SPeter Avalos #define T_LOC 29 /* Location Information */ 15341c99275SPeter Avalos #define T_NXT 30 /* Next Valid Name in Zone */ 15441c99275SPeter Avalos #define T_EID 31 /* Endpoint identifier */ 15541c99275SPeter Avalos #define T_NIMLOC 32 /* Nimrod locator */ 15641c99275SPeter Avalos #define T_SRV 33 /* Server selection */ 15741c99275SPeter Avalos #define T_ATMA 34 /* ATM Address */ 15841c99275SPeter Avalos #define T_NAPTR 35 /* Naming Authority PoinTeR */ 15941c99275SPeter Avalos #define T_KX 36 /* Key Exchanger */ 16041c99275SPeter Avalos #define T_CERT 37 /* Certificates in the DNS */ 16141c99275SPeter Avalos #define T_A6 38 /* IP6 address */ 16241c99275SPeter Avalos #define T_DNAME 39 /* non-terminal redirection */ 16341c99275SPeter Avalos #define T_SINK 40 /* unknown */ 16441c99275SPeter Avalos #define T_OPT 41 /* EDNS0 option (meta-RR) */ 16541c99275SPeter Avalos #define T_APL 42 /* lists of address prefixes */ 16641c99275SPeter Avalos #define T_DS 43 /* Delegation Signer */ 16741c99275SPeter Avalos #define T_SSHFP 44 /* SSH Fingerprint */ 16841c99275SPeter Avalos #define T_IPSECKEY 45 /* IPsec keying material */ 16941c99275SPeter Avalos #define T_RRSIG 46 /* new security signature */ 17041c99275SPeter Avalos #define T_NSEC 47 /* provable insecure information */ 17141c99275SPeter Avalos #define T_DNSKEY 48 /* new security key */ 17241c99275SPeter Avalos /* non standard */ 17341c99275SPeter Avalos #define T_SPF 99 /* sender policy framework */ 17441c99275SPeter Avalos #define T_UINFO 100 /* user (finger) information */ 17541c99275SPeter Avalos #define T_UID 101 /* user ID */ 17641c99275SPeter Avalos #define T_GID 102 /* group ID */ 17741c99275SPeter Avalos #define T_UNSPEC 103 /* Unspecified format (binary data) */ 178*ed775ee7SAntonio Huete Jimenez #define T_UNSPECA 104 /* "unspecified ASCII". Ugly MIT hack */ 17941c99275SPeter Avalos /* Query type values which do not appear in resource records */ 18041c99275SPeter Avalos #define T_TKEY 249 /* Transaction Key [RFC2930] */ 18141c99275SPeter Avalos #define T_TSIG 250 /* Transaction Signature [RFC2845] */ 18241c99275SPeter Avalos #define T_IXFR 251 /* incremental transfer [RFC1995] */ 18341c99275SPeter Avalos #define T_AXFR 252 /* transfer zone of authority */ 18441c99275SPeter Avalos #define T_MAILB 253 /* transfer mailbox records */ 18541c99275SPeter Avalos #define T_MAILA 254 /* transfer mail agent records */ 18641c99275SPeter Avalos #define T_ANY 255 /* wildcard match */ 187*ed775ee7SAntonio Huete Jimenez #define T_URI 256 /* uri records [RFC7553] */ 18841c99275SPeter Avalos 18941c99275SPeter Avalos /* 19041c99275SPeter Avalos * Values for class field 19141c99275SPeter Avalos */ 19241c99275SPeter Avalos 19341c99275SPeter Avalos #define C_IN 1 /* the arpa internet */ 19441c99275SPeter Avalos #define C_CHAOS 3 /* for chaos net (MIT) */ 19541c99275SPeter Avalos #define C_HS 4 /* for Hesiod name server (MIT) (XXX) */ 19641c99275SPeter Avalos /* Query class values which do not appear in resource records */ 19741c99275SPeter Avalos #define C_ANY 255 /* wildcard match */ 19841c99275SPeter Avalos #define C_QU 0x8000 /* mDNS QU flag in queries */ 19941c99275SPeter Avalos #define C_CACHE_FLUSH 0x8000 /* mDNS cache flush flag in replies */ 20041c99275SPeter Avalos 20141c99275SPeter Avalos /* 202*ed775ee7SAntonio Huete Jimenez * Values for EDNS option types 203*ed775ee7SAntonio Huete Jimenez */ 204*ed775ee7SAntonio Huete Jimenez #define E_LLQ 1 /* long lived queries protocol */ 205*ed775ee7SAntonio Huete Jimenez #define E_UL 2 /* dynamic dns update leases */ 206*ed775ee7SAntonio Huete Jimenez #define E_NSID 3 /* name server identifier */ 207*ed775ee7SAntonio Huete Jimenez #define E_DAU 5 /* signal DNSSEC algorithm understood */ 208*ed775ee7SAntonio Huete Jimenez #define E_DHU 6 /* signal DS hash understood */ 209*ed775ee7SAntonio Huete Jimenez #define E_N3U 7 /* signal NSEC3 hash understood */ 210*ed775ee7SAntonio Huete Jimenez #define E_ECS 8 /* EDNS client subnet */ 211*ed775ee7SAntonio Huete Jimenez #define E_EXPIRE 9 /* zone expiration */ 212*ed775ee7SAntonio Huete Jimenez #define E_COOKIE 10 /* DNS cookies */ 213*ed775ee7SAntonio Huete Jimenez #define E_KEEPALIVE 11 /* TCP keepalive */ 214*ed775ee7SAntonio Huete Jimenez #define E_PADDING 12 /* pad DNS messages */ 215*ed775ee7SAntonio Huete Jimenez #define E_CHAIN 13 /* chain DNS queries */ 216*ed775ee7SAntonio Huete Jimenez #define E_KEYTAG 14 /* EDNS key tag */ 217*ed775ee7SAntonio Huete Jimenez #define E_CLIENTTAG 16 /* EDNS client tag */ 218*ed775ee7SAntonio Huete Jimenez #define E_SERVERTAG 17 /* EDNS server tag */ 219*ed775ee7SAntonio Huete Jimenez 220*ed775ee7SAntonio Huete Jimenez /* 221*ed775ee7SAntonio Huete Jimenez * Values for DNSSEC Algorithms 222*ed775ee7SAntonio Huete Jimenez * https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml 223*ed775ee7SAntonio Huete Jimenez */ 224*ed775ee7SAntonio Huete Jimenez 225*ed775ee7SAntonio Huete Jimenez #define A_DELETE 0 226*ed775ee7SAntonio Huete Jimenez #define A_RSAMD5 1 227*ed775ee7SAntonio Huete Jimenez #define A_DH 2 228*ed775ee7SAntonio Huete Jimenez #define A_DSA 3 229*ed775ee7SAntonio Huete Jimenez #define A_RSASHA1 5 230*ed775ee7SAntonio Huete Jimenez #define A_DSA_NSEC3_SHA1 6 231*ed775ee7SAntonio Huete Jimenez #define A_RSASHA1_NSEC3_SHA1 7 232*ed775ee7SAntonio Huete Jimenez #define A_RSASHA256 8 233*ed775ee7SAntonio Huete Jimenez #define A_RSASHA512 10 234*ed775ee7SAntonio Huete Jimenez #define A_ECC_GOST 12 235*ed775ee7SAntonio Huete Jimenez #define A_ECDSAP256SHA256 13 236*ed775ee7SAntonio Huete Jimenez #define A_ECDSAP384SHA384 14 237*ed775ee7SAntonio Huete Jimenez #define A_ED25519 15 238*ed775ee7SAntonio Huete Jimenez #define A_ED448 16 239*ed775ee7SAntonio Huete Jimenez #define A_INDIRECT 252 240*ed775ee7SAntonio Huete Jimenez #define A_PRIVATEDNS 253 241*ed775ee7SAntonio Huete Jimenez #define A_PRIVATEOID 254 242*ed775ee7SAntonio Huete Jimenez 243*ed775ee7SAntonio Huete Jimenez /* 244*ed775ee7SAntonio Huete Jimenez * Values for NSEC3 algorithms 245*ed775ee7SAntonio Huete Jimenez * https://www.iana.org/assignments/dnssec-nsec3-parameters/dnssec-nsec3-parameters.xhtml 246*ed775ee7SAntonio Huete Jimenez */ 247*ed775ee7SAntonio Huete Jimenez #define NSEC_SHA1 1 248*ed775ee7SAntonio Huete Jimenez 249*ed775ee7SAntonio Huete Jimenez /* 250*ed775ee7SAntonio Huete Jimenez * Values for delegation signer algorithms 251*ed775ee7SAntonio Huete Jimenez * https://www.iana.org/assignments/ds-rr-types/ds-rr-types.xhtml 252*ed775ee7SAntonio Huete Jimenez */ 253*ed775ee7SAntonio Huete Jimenez #define DS_SHA1 1 254*ed775ee7SAntonio Huete Jimenez #define DS_SHA256 2 255*ed775ee7SAntonio Huete Jimenez #define DS_GOST 3 256*ed775ee7SAntonio Huete Jimenez #define DS_SHA384 4 257*ed775ee7SAntonio Huete Jimenez 258*ed775ee7SAntonio Huete Jimenez 259*ed775ee7SAntonio Huete Jimenez /* 26041c99275SPeter Avalos * Status return codes for T_UNSPEC conversion routines 26141c99275SPeter Avalos */ 26241c99275SPeter Avalos #define CONV_SUCCESS 0 26341c99275SPeter Avalos #define CONV_OVERFLOW -1 26441c99275SPeter Avalos #define CONV_BADFMT -2 26541c99275SPeter Avalos #define CONV_BADCKSUM -3 26641c99275SPeter Avalos #define CONV_BADBUFLEN -4 26741c99275SPeter Avalos 26841c99275SPeter Avalos /* 26941c99275SPeter Avalos * Structure for query header. 27041c99275SPeter Avalos */ 27141c99275SPeter Avalos typedef struct { 272*ed775ee7SAntonio Huete Jimenez nd_uint16_t id; /* query identification number */ 273*ed775ee7SAntonio Huete Jimenez nd_uint16_t flags; /* QR, Opcode, AA, TC, RD, RA, RCODE */ 274*ed775ee7SAntonio Huete Jimenez nd_uint16_t qdcount; /* number of question entries */ 275*ed775ee7SAntonio Huete Jimenez nd_uint16_t ancount; /* number of answer entries */ 276*ed775ee7SAntonio Huete Jimenez nd_uint16_t nscount; /* number of authority entries */ 277*ed775ee7SAntonio Huete Jimenez nd_uint16_t arcount; /* number of resource entries */ 278*ed775ee7SAntonio Huete Jimenez } dns_header_t; 27941c99275SPeter Avalos 28041c99275SPeter Avalos /* 28141c99275SPeter Avalos * Macros for subfields of flag fields. 28241c99275SPeter Avalos */ 283*ed775ee7SAntonio Huete Jimenez #define DNS_QR(flags) ((flags) & 0x8000) /* response flag */ 284*ed775ee7SAntonio Huete Jimenez #define DNS_OPCODE(flags) (((flags) >> 11) & 0xF) /* purpose of message */ 285*ed775ee7SAntonio Huete Jimenez #define DNS_AA(flags) (flags & 0x0400) /* authoritative answer */ 286*ed775ee7SAntonio Huete Jimenez #define DNS_TC(flags) (flags & 0x0200) /* truncated message */ 287*ed775ee7SAntonio Huete Jimenez #define DNS_RD(flags) (flags & 0x0100) /* recursion desired */ 288*ed775ee7SAntonio Huete Jimenez #define DNS_RA(flags) (flags & 0x0080) /* recursion available */ 289*ed775ee7SAntonio Huete Jimenez #define DNS_AD(flags) (flags & 0x0020) /* authentic data from named */ 290*ed775ee7SAntonio Huete Jimenez #define DNS_CD(flags) (flags & 0x0010) /* checking disabled by resolver */ 291*ed775ee7SAntonio Huete Jimenez #define DNS_RCODE(flags) (flags & 0x000F) /* response code */ 29241c99275SPeter Avalos 29341c99275SPeter Avalos /* 29441c99275SPeter Avalos * Defines for handling compressed domain names, EDNS0 labels, etc. 29541c99275SPeter Avalos */ 296*ed775ee7SAntonio Huete Jimenez #define TYPE_MASK 0xc0 /* mask for the type bits of the item */ 297*ed775ee7SAntonio Huete Jimenez #define TYPE_INDIR 0xc0 /* 11.... - pointer */ 298*ed775ee7SAntonio Huete Jimenez #define TYPE_RESERVED 0x80 /* 10.... - reserved */ 299*ed775ee7SAntonio Huete Jimenez #define TYPE_EDNS0 0x40 /* 01.... - EDNS(0) label */ 300*ed775ee7SAntonio Huete Jimenez #define TYPE_LABEL 0x00 /* 00.... - regular label */ 30141c99275SPeter Avalos # define EDNS0_ELT_BITLABEL 0x01 30241c99275SPeter Avalos 30341c99275SPeter Avalos #endif /* !_NAMESER_H_ */ 304