X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/c981dfc94b394c8f7579905a74c348c22a39d471..a8c33a5850cd9d2f39e56c06b645c283225d78c4:/nameser.h diff --git a/nameser.h b/nameser.h index 21f50e6c..820458c2 100644 --- a/nameser.h +++ b/nameser.h @@ -1,4 +1,3 @@ -/* @(#) $Header: /tcpdump/master/tcpdump/nameser.h,v 1.6 2001-01-28 07:47:56 itojun Exp $ (LBL) */ /* * Copyright (c) 1983, 1989, 1993 * The Regents of the University of California. All rights reserved. @@ -34,14 +33,14 @@ * @(#)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 @@ -71,11 +70,6 @@ /* number of bytes of fixed size data in resource record */ #define RRFIXEDSZ 10 -/* - * Internet nameserver port number - */ -#define NAMESERVER_PORT 53 - /* * Currently defined opcodes */ @@ -95,6 +89,23 @@ #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 */ @@ -145,20 +156,35 @@ #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 */ /* 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_UNSPECA 104 /* "unspecified ascii". Ugly MIT hack */ +#define T_UNSPECA 104 /* "unspecified ASCII". Ugly MIT hack */ /* 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] */ /* * Values for class field @@ -169,6 +195,8 @@ #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 @@ -183,91 +211,32 @@ * Structure for query header. */ 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; + 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; /* * Macros for subfields of flag fields. */ -#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 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 */ +#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 */ /* * Defines for handling compressed domain names, EDNS0 labels, etc. */ #define INDIR_MASK 0xc0 /* 11.... */ #define EDNS0_MASK 0x40 /* 01.... */ -# define EDNS0_ELT_BITLABEL 0x01 - -/* - * Structure for passing resource records around. - */ -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 */ -}; - -/* - * 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. - */ -#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; \ -} - -/* - * Warning: PUTLONG --no-longer-- destroys its first argument. if you - * were depending on this "feature", you will lose. - */ -#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 EDNS0_ELT_BITLABEL 0x01 #endif /* !_NAMESER_H_ */