* @(#)nameser.h 8.2 (Berkeley) 2/16/94
* -
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
+ *
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies, and that
* the name of Digital Equipment Corporation not be used in advertising or
* publicity pertaining to distribution of the document or software without
* specific, written prior permission.
- *
+ *
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
/* number of bytes of fixed size data in resource record */
#define RRFIXEDSZ 10
-/*
- * Internet nameserver port number
- */
-#define NAMESERVER_PORT 53
-
/*
* Currently defined opcodes
*/
#define QUERY 0x0 /* standard query */
#define IQUERY 0x1 /* inverse query */
#define STATUS 0x2 /* nameserver status query */
-/*#define xxx 0x3 /* 0x3 reserved */
+#if 0
+#define xxx 0x3 /* 0x3 reserved */
+#endif
/* non standard - supports ALLOW_UPDATES stuff from Mike Schwartz */
#define UPDATEA 0x9 /* add resource record */
#define UPDATED 0xa /* delete a specific resource record */
#define ZONEINIT 0xe /* initial zone transfer */
#define ZONEREF 0xf /* incremental zone referesh */
+/*
+ * Undefine various #defines from various System V-flavored OSes (Solaris,
+ * SINIX, HP-UX) so the compiler doesn't whine that we redefine them.
+ */
+#ifdef T_NULL
+#undef T_NULL
+#endif
+#ifdef T_OPT
+#undef T_OPT
+#endif
+#ifdef T_UNSPEC
+#undef T_UNSPEC
+#endif
+#ifdef NOERROR
+#undef NOERROR
+#endif
+
/*
* Currently defined response codes
*/
#define T_TXT 16 /* text strings */
#define T_RP 17 /* responsible person */
#define T_AFSDB 18 /* AFS cell database */
+#define T_X25 19 /* X_25 calling address */
+#define T_ISDN 20 /* ISDN calling address */
+#define T_RT 21 /* router */
#define T_NSAP 22 /* NSAP address */
#define T_NSAP_PTR 23 /* reverse lookup for NSAP */
+#define T_SIG 24 /* security signature */
+#define T_KEY 25 /* security key */
+#define T_PX 26 /* X.400 mail mapping */
+#define T_GPOS 27 /* geographical position (withdrawn) */
+#define T_AAAA 28 /* IP6 Address */
+#define T_LOC 29 /* Location Information */
+#define T_NXT 30 /* Next Valid Name in Zone */
+#define T_EID 31 /* Endpoint identifier */
+#define T_NIMLOC 32 /* Nimrod locator */
+#define T_SRV 33 /* Server selection */
+#define T_ATMA 34 /* ATM Address */
+#define T_NAPTR 35 /* Naming Authority PoinTeR */
+#define T_KX 36 /* Key Exchanger */
+#define T_CERT 37 /* Certificates in the DNS */
+#define T_A6 38 /* IP6 address */
+#define T_DNAME 39 /* non-terminal redirection */
+#define T_SINK 40 /* unknown */
+#define T_OPT 41 /* EDNS0 option (meta-RR) */
+#define T_APL 42 /* lists of address prefixes */
+#define T_DS 43 /* Delegation Signer */
+#define T_SSHFP 44 /* SSH Fingerprint */
+#define T_IPSECKEY 45 /* IPsec keying material */
+#define T_RRSIG 46 /* new security signature */
+#define T_NSEC 47 /* provable insecure information */
+#define T_DNSKEY 48 /* new security key */
+#define T_DHCID 49 /* DHCP IDentifier */
+#define T_NSEC3 50 /* Next SECure record v3 */
+#define T_NSEC3PARAM 51 /* NSEC3 PARAMeter */
+#define T_TLSA 52 /* TLS Authentication */
+#define T_SMIMEA 53 /* S/MIME Authentication */
+/* Unassigned */
+#define T_HIP 55 /* Host Identity Protocol */
+#define T_NINFO 56 /* zone status information */
+#define T_RKEY 57 /* Record encryption KEY */
+#define T_TALINK 58 /* Trust Anchor LINK */
+#define T_CDS 59 /* Child Delegation Signer */
+#define T_CDNSKEY 60 /* Child DNSKEY */
+#define T_OPENPGPKEY 61 /* OpenPGP KEY */
+#define T_CSYNC 62 /* Child to parent SYNChronization */
+#define T_ZONEMD 63 /* ZONE data Message Digest */
+#define T_SVCB 64 /* SerViCe Binding */
+#define T_HTTPS 65 /* HTTPS binding */
/* non standard */
+#define T_SPF 99 /* sender policy framework */
#define T_UINFO 100 /* user (finger) information */
#define T_UID 101 /* user ID */
#define T_GID 102 /* group ID */
#define T_UNSPEC 103 /* Unspecified format (binary data) */
+#define T_NID 104 /* Node IDentifier */
+#define T_L32 105 /* Locator 32-bit */
+#define T_L64 106 /* Locator 64-bit */
+#define T_LP 107 /* Locator Pointer */
+#define T_EUI48 108 /* an EUI-48 address */
+#define T_EUI64 109 /* an EUI-64 address */
/* Query type values which do not appear in resource records */
+#define T_TKEY 249 /* Transaction Key [RFC2930] */
+#define T_TSIG 250 /* Transaction Signature [RFC2845] */
+#define T_IXFR 251 /* incremental transfer [RFC1995] */
#define T_AXFR 252 /* transfer zone of authority */
#define T_MAILB 253 /* transfer mailbox records */
#define T_MAILA 254 /* transfer mail agent records */
#define T_ANY 255 /* wildcard match */
+#define T_URI 256 /* uri records [RFC7553] */
+#define T_CAA 257 /* Certification Authority Authorization */
+#define T_AVC 258 /* Application Visibility and Control */
+#define T_DOA 259 /* Digital Object Architecture */
+#define T_AMTRELAY 260 /* Automatic Multicast Tunneling RELAY */
+#define T_TA 32768 /* DNSSEC Trust Authorities */
+#define T_DLV 32769 /* DNSSEC Lookaside Validation */
/*
* Values for class field
#define C_HS 4 /* for Hesiod name server (MIT) (XXX) */
/* Query class values which do not appear in resource records */
#define C_ANY 255 /* wildcard match */
+#define C_QU 0x8000 /* mDNS QU flag in queries */
+#define C_CACHE_FLUSH 0x8000 /* mDNS cache flush flag in replies */
/*
- * Status return codes for T_UNSPEC conversion routines
+ * Values for EDNS option types
*/
-#define CONV_SUCCESS 0
-#define CONV_OVERFLOW -1
-#define CONV_BADFMT -2
-#define CONV_BADCKSUM -3
-#define CONV_BADBUFLEN -4
+#define E_LLQ 1 /* long lived queries protocol */
+#define E_UL 2 /* dynamic dns update leases */
+#define E_NSID 3 /* name server identifier */
+#define E_DAU 5 /* signal DNSSEC algorithm understood */
+#define E_DHU 6 /* signal DS hash understood */
+#define E_N3U 7 /* signal NSEC3 hash understood */
+#define E_ECS 8 /* EDNS client subnet */
+#define E_EXPIRE 9 /* zone expiration */
+#define E_COOKIE 10 /* DNS cookies */
+#define E_KEEPALIVE 11 /* TCP keepalive */
+#define E_PADDING 12 /* pad DNS messages */
+#define E_CHAIN 13 /* chain DNS queries */
+#define E_KEYTAG 14 /* EDNS key tag */
+#define E_CLIENTTAG 16 /* EDNS client tag */
+#define E_SERVERTAG 17 /* EDNS server tag */
/*
- * Structure for query header.
+ * Values for DNSSEC Algorithms
+ * https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml
*/
-typedef struct {
- u_int16_t id; /* query identification number */
- u_int8_t flags1; /* first byte of flags */
- u_int8_t flags2; /* second byte of flags */
- u_int16_t qdcount; /* number of question entries */
- u_int16_t ancount; /* number of answer entries */
- u_int16_t nscount; /* number of authority entries */
- u_int16_t arcount; /* number of resource entries */
-} HEADER;
+
+#define A_DELETE 0
+#define A_RSAMD5 1
+#define A_DH 2
+#define A_DSA 3
+#define A_RSASHA1 5
+#define A_DSA_NSEC3_SHA1 6
+#define A_RSASHA1_NSEC3_SHA1 7
+#define A_RSASHA256 8
+#define A_RSASHA512 10
+#define A_ECC_GOST 12
+#define A_ECDSAP256SHA256 13
+#define A_ECDSAP384SHA384 14
+#define A_ED25519 15
+#define A_ED448 16
+#define A_INDIRECT 252
+#define A_PRIVATEDNS 253
+#define A_PRIVATEOID 254
/*
- * Macros for subfields of flag fields.
+ * Values for NSEC3 algorithms
+ * https://www.iana.org/assignments/dnssec-nsec3-parameters/dnssec-nsec3-parameters.xhtml
+ */
+#define NSEC_SHA1 1
+
+/*
+ * Values for delegation signer algorithms
+ * https://www.iana.org/assignments/ds-rr-types/ds-rr-types.xhtml
*/
-#define DNS_QR(np) ((np)->flags1 & 0x80) /* response flag */
-#define DNS_OPCODE(np) ((((np)->flags1) >> 3) & 0xF) /* purpose of message */
-#define DNS_AA(np) ((np)->flags1 & 0x04) /* authoritative answer */
-#define DNS_TC(np) ((np)->flags1 & 0x02) /* truncated message */
-#define DNS_RD(np) ((np)->flags1 & 0x01) /* recursion desired */
+#define DS_SHA1 1
+#define DS_SHA256 2
+#define DS_GOST 3
+#define DS_SHA384 4
-#define DNS_RA(np) ((np)->flags2 & 0x80) /* recursion available */
-#define DNS_AD(np) ((np)->flags2 & 0x20) /* authentic data from named */
-#define DNS_CD(np) ((np)->flags2 & 0x10) /* checking disabled by resolver */
-#define DNS_RCODE(np) ((np)->flags2 & 0xF) /* response code */
/*
- * Defines for handling compressed domain names
+ * Status return codes for T_UNSPEC conversion routines
*/
-#define INDIR_MASK 0xc0
+#define CONV_SUCCESS 0
+#define CONV_OVERFLOW -1
+#define CONV_BADFMT -2
+#define CONV_BADCKSUM -3
+#define CONV_BADBUFLEN -4
/*
- * Structure for passing resource records around.
+ * Structure for query header.
*/
-struct rrec {
- int16_t r_zone; /* zone number */
- int16_t r_class; /* class number */
- int16_t r_type; /* type number */
- u_int32_t r_ttl; /* time to live */
- int r_size; /* size of data area */
- char *r_data; /* pointer to data */
-};
-
-extern u_int16_t _getshort();
-extern u_int32_t _getlong();
+typedef struct {
+ nd_uint16_t id; /* query identification number */
+ nd_uint16_t flags; /* QR, Opcode, AA, TC, RD, RA, RCODE */
+ nd_uint16_t qdcount; /* number of question entries */
+ nd_uint16_t ancount; /* number of answer entries */
+ nd_uint16_t nscount; /* number of authority entries */
+ nd_uint16_t arcount; /* number of resource entries */
+} dns_header_t;
/*
- * Inline versions of get/put short/long. Pointer is advanced.
- * We also assume that a "u_int16_t" holds 2 "chars"
- * and that a "u_int32_t" holds 4 "chars".
- *
- * These macros demonstrate the property of C whereby it can be
- * portable or it can be elegant but never both.
+ * Macros for subfields of flag fields.
*/
-#define GETSHORT(s, cp) { \
- register u_char *t_cp = (u_char *)(cp); \
- (s) = ((u_int16_t)t_cp[0] << 8) | (u_int16_t)t_cp[1]; \
- (cp) += 2; \
-}
-
-#define GETLONG(l, cp) { \
- register u_char *t_cp = (u_char *)(cp); \
- (l) = (((u_int32_t)t_cp[0]) << 24) \
- | (((u_int32_t)t_cp[1]) << 16) \
- | (((u_int32_t)t_cp[2]) << 8) \
- | (((u_int32_t)t_cp[3])); \
- (cp) += 4; \
-}
-
-#define PUTSHORT(s, cp) { \
- register u_int16_t t_s = (u_int16_t)(s); \
- register u_char *t_cp = (u_char *)(cp); \
- *t_cp++ = t_s >> 8; \
- *t_cp = t_s; \
- (cp) += 2; \
-}
+#define DNS_QR(flags) ((flags) & 0x8000) /* response flag */
+#define DNS_OPCODE(flags) (((flags) >> 11) & 0xF) /* purpose of message */
+#define DNS_AA(flags) (flags & 0x0400) /* authoritative answer */
+#define DNS_TC(flags) (flags & 0x0200) /* truncated message */
+#define DNS_RD(flags) (flags & 0x0100) /* recursion desired */
+#define DNS_RA(flags) (flags & 0x0080) /* recursion available */
+#define DNS_AD(flags) (flags & 0x0020) /* authentic data from named */
+#define DNS_CD(flags) (flags & 0x0010) /* checking disabled by resolver */
+#define DNS_RCODE(flags) (flags & 0x000F) /* response code */
/*
- * Warning: PUTLONG --no-longer-- destroys its first argument. if you
- * were depending on this "feature", you will lose.
+ * Defines for handling compressed domain names, EDNS0 labels, etc.
*/
-#define PUTLONG(l, cp) { \
- register u_int32_t t_l = (u_int32_t)(l); \
- register u_char *t_cp = (u_char *)(cp); \
- *t_cp++ = t_l >> 24; \
- *t_cp++ = t_l >> 16; \
- *t_cp++ = t_l >> 8; \
- *t_cp = t_l; \
- (cp) += 4; \
-}
+#define TYPE_MASK 0xc0 /* mask for the type bits of the item */
+#define TYPE_INDIR 0xc0 /* 11.... - pointer */
+#define TYPE_RESERVED 0x80 /* 10.... - reserved */
+#define TYPE_EDNS0 0x40 /* 01.... - EDNS(0) label */
+#define TYPE_LABEL 0x00 /* 00.... - regular label */
+# define EDNS0_ELT_BITLABEL 0x01
#endif /* !_NAMESER_H_ */
projects / tcpdump / blobdiff