tcpdump.1 is generated from tcpdump.1.in.

[tcpdump] / nameser.h

diff --git a/nameser.h b/nameser.h
index 54d70937de2781ac7736e35bd97755fb20e10289..f441f3ea6f568406ae99f9dfabc998469916bdce 100644 (file)
--- a/nameser.h
+++ b/nameser.h
@@ -1,3 +1,4 @@
+/* @(#) $Header: /tcpdump/master/tcpdump/nameser.h,v 1.16 2006-11-10 03:18:21 guy Exp $ (LBL) */

 /*
  * Copyright (c) 1983, 1989, 1993
  *     The Regents of the University of California.  All rights reserved.
 /*
  * Copyright (c) 1983, 1989, 1993
  *     The Regents of the University of California.  All rights reserved.


@@ -33,14 +34,14 @@
  *      @(#)nameser.h  8.2 (Berkeley) 2/16/94
  * -
  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
  *      @(#)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.
  * 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
  * 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


@@ -75,13 +76,24 @@
  */
 #define NAMESERVER_PORT        53
 
  */
 #define NAMESERVER_PORT        53
 

+/*
+ * Port for multicast DNS; see
+ *
+ *     http://files.multicastdns.org/draft-cheshire-dnsext-multicastdns.txt
+ *
+ * for the current mDNS spec.
+ */
+#define MULTICASTDNS_PORT      5353
+

 /*
  * Currently defined opcodes
  */
 #define QUERY          0x0             /* standard query */
 #define IQUERY         0x1             /* inverse query */
 #define STATUS         0x2             /* nameserver status query */
 /*
  * 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 */
        /* non standard - supports ALLOW_UPDATES stuff from Mike Schwartz */
 #define UPDATEA                0x9             /* add resource record */
 #define UPDATED                0xa             /* delete a specific resource record */


@@ -92,6 +104,23 @@
 #define ZONEINIT       0xe             /* initial zone transfer */
 #define ZONEREF                0xf             /* incremental zone referesh */
 
 #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
  */
 /*
  * Currently defined response codes
  */


@@ -125,14 +154,47 @@
 #define T_TXT          16              /* text strings */
 #define        T_RP            17              /* responsible person */
 #define        T_AFSDB         18              /* AFS cell database */
 #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_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 */

        /* non standard */
        /* 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_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 */

        /* Query type values which do not appear in resource records */
        /* 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_AXFR         252             /* transfer zone of authority */
 #define T_MAILB                253             /* transfer mailbox records */
 #define T_MAILA                254             /* transfer mail agent records */


@@ -147,6 +209,8 @@
 #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_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
 
 /*
  * Status return codes for T_UNSPEC conversion routines


@@ -157,67 +221,13 @@
 #define CONV_BADCKSUM -3
 #define CONV_BADBUFLEN -4
 
 #define CONV_BADCKSUM -3
 #define CONV_BADBUFLEN -4
 

-#ifndef BYTE_ORDER
-#define        LITTLE_ENDIAN   1234    /* least-significant byte first (vax, pc) */
-#define        BIG_ENDIAN      4321    /* most-significant byte first (IBM, net) */
-#define        PDP_ENDIAN      3412    /* LSB first in word, MSW first in long (pdp)*/
-
-#ifdef WORDS_BIGENDIAN
-#define BYTE_ORDER     BIG_ENDIAN
-#else
-#define BYTE_ORDER     LITTLE_ENDIAN
-#endif /* WORDS_BIGENDIAN */
-#endif /* BYTE_ORDER */
-
-#if !defined(BYTE_ORDER) || \
-    (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN && \
-    BYTE_ORDER != PDP_ENDIAN)
-       /* you must determine what the correct bit order is for
-        * your compiler - the next line is an intentional error
-        * which will force your compiles to bomb until you fix
-        * the above macros.
-        */
-  #error "Undefined or invalid BYTE_ORDER";
-#endif
-

 /*
 /*

- * Structure for query header.  The order of the fields is machine- and
- * compiler-dependent, depending on the byte/bit order and the layout
- * of bit fields.  We use bit fields only in int variables, as this
- * is all ANSI requires.  This requires a somewhat confusing rearrangement.
+ * Structure for query header.

  */
  */

-

 typedef struct {
        u_int16_t id;           /* query identification number */
 typedef struct {
        u_int16_t id;           /* query identification number */

-#if BYTE_ORDER == BIG_ENDIAN
-                       /* fields in third byte */
-       u_int   qr:1;           /* response flag */
-       u_int   opcode:4;       /* purpose of message */
-       u_int   aa:1;           /* authoritive answer */
-       u_int   tc:1;           /* truncated message */
-       u_int   rd:1;           /* recursion desired */
-                       /* fields in fourth byte */
-       u_int   ra:1;           /* recursion available */
-       u_int   pr:1;           /* primary server required (non standard) */
-       u_int   ad: 1;          /* authentic data from named */
-       u_int   cd: 1;          /* checking disabled by resolver */
-       u_int   rcode:4;        /* response code */
-#endif
-#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
-                       /* fields in third byte */
-       u_int   rd:1;           /* recursion desired */
-       u_int   tc:1;           /* truncated message */
-       u_int   aa:1;           /* authoritive answer */
-       u_int   opcode:4;       /* purpose of message */
-       u_int   qr:1;           /* response flag */
-                       /* fields in fourth byte */
-       u_int   rcode:4;        /* response code */
-       u_int   cd: 1;          /* checking disabled by resolver */
-       u_int   ad: 1;          /* authentic data from named */
-       u_int   pr:1;           /* primary server required (non standard) */
-       u_int   ra:1;           /* recursion available */
-#endif
-                       /* remaining bytes */
+       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 qdcount;      /* number of question entries */
        u_int16_t ancount;      /* number of answer entries */
        u_int16_t nscount;      /* number of authority entries */


@@ -225,9 +235,25 @@ typedef struct {
 } HEADER;
 
 /*
 } HEADER;
 
 /*

- * Defines for handling compressed domain names
+ * 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 */
+
+/*
+ * Defines for handling compressed domain names, EDNS0 labels, etc.

  */
  */

-#define INDIR_MASK     0xc0
+#define INDIR_MASK     0xc0    /* 11.... */
+#define EDNS0_MASK     0x40    /* 01.... */
+#  define EDNS0_ELT_BITLABEL 0x01

 
 /*
  * Structure for passing resource records around.
 
 /*
  * Structure for passing resource records around.


@@ -241,9 +267,6 @@ struct rrec {
        char    *r_data;                /* pointer to data */
 };
 
        char    *r_data;                /* pointer to data */
 };
 

-extern u_int16_t       _getshort();
-extern u_int32_t       _getlong();
-

 /*
  * Inline versions of get/put short/long.  Pointer is advanced.
  * We also assume that a "u_int16_t" holds 2 "chars"
 /*
  * Inline versions of get/put short/long.  Pointer is advanced.
  * We also assume that a "u_int16_t" holds 2 "chars"