Net::DNS::Codes - collection of C library DNS codes

  use Net::DNS::Codes qw(
	:header
	:RRs
	:constants
	:all
    (or any individual item)
  );

  --------- :header -------

  $textval = RBitsTxt->{masked_bits};
  $textval = RcodeTxt->{numeric};
  $textval = OpcodeTxt->{numeric};
  $code = (one of text below)

QR AA TC RD RA MBZ Z AD CD

BITS_QUERY BITS_IQUERY BITS_STATUS BITS_NS_NOTIFY_OP BITS_NS_UPDATE_OP

QUERY IQUERY STATUS NS_NOTIFY_OP NS_UPDATE_OP

NOERROR FORMERR SERVFAIL NXDOMAIN NOTIMP REFUSED YXDOMAIN YXRRSET NXRRSET NOTAUTH NOTZONE BADSIG BADKEY BADTIME

  ------- :RRs -------

  $textval = ClassTxt->{numeric};  
  $textval = TypeTxt->{numeric};
  $code = (one of text below)

C_IN C_CHAOS C_HS C_NONE C_ANY

T_A T_NS T_MD T_MF T_CNAME T_SOA T_MB T_MG T_MR T_NULL T_WKS T_PTR T_HINFO T_MINFO T_MX T_TXT T_RP T_AFSDB T_X25 T_ISDN T_RT T_NSAP T_NSAP_PTR T_SIG T_KEY T_PX T_GPOS T_AAAA T_LOC T_NXT T_EID T_NIMLOC T_SRV T_ATMA T_NAPTR T_KX T_CERT T_A6 T_DNAME T_SINK T_OPT T_TKEY T_TSIG T_IXFR T_AXFR T_MAILB T_MAILA T_ANY

  ------- :constants -------
  $code = (one of test below)

PACKETSZ NS_PACKETSZ MAXDNAME NS_MAXDNAME MAXCDNAME NS_MAXCDNAME MAXLABEL NS_MAXLABEL HFIXEDSZ NS_HFIXEDSZ QFIXEDSZ NS_QFIXEDSZ RRFIXEDSZ NS_RRFIXEDSZ INT32SZ NS_INT32SZ INT16SZ NS_INT16SZ NS_INT8SZ INADDRSZ NS_INADDRSZ IN6ADDRSZ NS_IN6ADDRSZ INDIR_MASK NS_CMPRSFLGS NAMESERVER_PORT NS_DEFAULTPORT

  $code = INT8SZ (not a DNS code, added for convenience)

Net::DNS::Codes provides forward and reverse lookup for most common C library DNS codes as well as all the codes for the DNS HEADER field.

* $bitmask = XX

  Return the bitmask for the code:

   15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0
  +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
  |QR|   Opcode  |AA|TC|RD|RA| Z|AD|CD|   Rcode   |
  +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15

  QR		=>	1000_0000_0000_0000
  BitsOpcode	=>	Opcode binary value
			left shifted 11 bits
  AA		=>	100_0000_0000
  TC		=>	10_0000_0000
  RD		=>	1_0000_0000
  RA		=>	1000_0000
  MBZ or Z	=>	100_0000
  AD		=>	10_0000
  CD		=>	1_0000
  Rcode		=>	Rcode binary value

  where BitsOpcode =

  BITS_QUERY	    =>    0, 
  BITS_IQUERY	    =>    1000_0000_0000 # 1 << 11
  BITS_STATUS	    =>  1_0000_0000_0000 # 2 << 11
  BITS_NS_NOTIFY_OP => 10_0000_0000_0000 # 4 << 11
  BITS_NS_UPDATE_OP => 10_1000_0000_0000 # 5 << 11

* $textval = RBitsTxt->{masked_bits};

Returns the TEXT string for the bit fields above.

  NOTE: that MBZ and Z have the same value. 
  The text string 'MBZ' is returned for 0x1 << 6

* $textval = RcodeTxt->{numeric};

  Return the TEXT string for numeric code.

	NOERROR		=> 0,
	FORMERR		=> 1,
	SERVFAIL	=> 2,
	NXDOMAIN	=> 3,
	NOTIMP		=> 4,
	REFUSED		=> 5,
	YXDOMAIN	=> 6,
	YXRRSET		=> 7,
	NXRRSET		=> 8,
	NOTAUTH		=> 9,
	NOTZONE		=> 10,
	BADSIG		=> 16,
	BADKEY		=> 17,
	BADTIME		=> 18,

* $textval = OpcodeTxt->{numeric};

  Return the TEXT string for numeric code.

	QUERY		=> 0,
	IQUERY		=> 1,
	STATUS		=> 2, 
	NS_NOTIFY_OP	=> 4, 
	NS_UPDATE_OP	=> 5,  

* $textval = ClassTxt->{numeric};

  Return the TEXT string for numeric code.

	C_IN	    => 1,
	C_CHAOS	 => 3,
	C_HS	    => 4,
	C_NONE	  => 254,
	C_ANY	   => 255,

* $textval = TypeTxt->{numeric};

  Return the TEXT string for numeric code.

	T_A		=> 1,
	T_NS		=> 2,
	T_MD		=> 3,
	T_MF		=> 4,
	T_CNAME		=> 5,
	T_SOA		=> 6,
	T_MB		=> 7,
	T_MG		=> 8,
	T_MR		=> 9,
	T_NULL		=> 10,
	T_WKS		=> 11,
	T_PTR		=> 12,
	T_HINFO		=> 13,
	T_MINFO		=> 14,
	T_MX		=> 15,
	T_TXT		=> 16,
	T_RP		=> 17,
	T_AFSDB		=> 18,
	T_X25		=> 19,
	T_ISDN		=> 20,
	T_RT		=> 21,
	T_NSAP		=> 22,
	T_NSAP_PTR	=> 23,
	T_SIG		=> 24,
	T_KEY		=> 25,
	T_PX		=> 26,
	T_GPOS		=> 27,
	T_AAAA		=> 28,
	T_LOC		=> 29,
	T_NXT		=> 30,
	T_EID		=> 31,
	T_NIMLOC	=> 32,
	T_SRV		=> 33,
	T_ATMA		=> 34,
	T_NAPTR		=> 35,
	T_KX		=> 36,
	T_CERT		=> 37,
	T_A6		=> 38,
	T_DNAME		=> 39,
	T_SINK		=> 40,
	T_OPT		=> 41,
	T_DS		=> 43,
	T_TKEY		=> 249,
	T_TSIG		=> 250,
	T_IXFR		=> 251,
	T_AXFR		=> 252,
	T_MAILB		=> 253,
	T_MAILA		=> 254,
	T_ANY		=> 255,

* (various constants)

  PACKETSZ        NS_PACKETSZ     512
  MAXDNAME        NS_MAXDNAME     1025
  MAXCDNAME       NS_MAXCDNAME    255 
  MAXLABEL        NS_MAXLABEL     63  
  HFIXEDSZ        NS_HFIXEDSZ     12  
  QFIXEDSZ        NS_QFIXEDSZ     4   
  RRFIXEDSZ       NS_RRFIXEDSZ    10  
  INT32SZ         NS_INT32SZ      4   
  INT16SZ         NS_INT16SZ      2   
  INT8SZ          NS_INT8SZ       1   
  INADDRSZ        NS_INADDRSZ     4   
  IN6ADDRSZ       NS_IN6ADDRSZ    16  
  INDIR_MASK      NS_CMPRSFLGS    0xc0
  NAMESERVER_PORT NS_DEFAULTPORT  53  

To install this module, type:

	perl Makfile.PL
	make
	make test
	make install

  ------- for tag :header -------

RBitsTxt RcodeTxt OpcodeTxt

QR AA TC RD RA MBZ Z AD CD

BITS_QUERY BITS_IQUERY BITS_STATUS BITS_NS_NOTIFY_OP BITS_NS_UPDATE_OP

QUERY IQUERY STATUS NS_NOTIFY_OP NS_UPDATE_OP

NOERROR FORMERR SERVFAIL NXDOMAIN NOTIMP REFUSED YXDOMAIN YXRRSET NXRRSET NOTAUTH NOTZONE BADSIG BADKEY BADTIME

  ------- for tag :RRs -------

  $textval = ClassTxt->{numeric};  
  $textval = TypeTxt->{numeric};
  $code = (one of text below)

C_IN C_CHAOS C_HS C_NONE C_ANY

T_A T_NS T_MD T_MF T_CNAME T_SOA T_MB T_MG T_MR T_NULL T_WKS T_PTR T_HINFO T_MINFO T_MX T_TXT T_RP T_AFSDB T_X25 T_ISDN T_RT T_NSAP T_NSAP_PTR T_SIG T_KEY T_PX T_GPOS T_AAAA T_LOC T_NXT T_EID T_NIMLOC T_SRV T_ATMA T_NAPTR T_KX T_CERT T_A6 T_DNAME T_SINK T_OPT T_DS T_TKEY T_TSIG T_IXFR T_AXFR T_MAILB T_MAILA T_ANY

  ------- for tag :constants -------

PACKETSZ NS_PACKETSZ MAXDNAME NS_MAXDNAME MAXCDNAME NS_MAXCDNAME MAXLABEL NS_MAXLABEL HFIXEDSZ NS_HFIXEDSZ QFIXEDSZ NS_QFIXEDSZ RRFIXEDSZ NS_RRFIXEDSZ INT32SZ NS_INT32SZ INT16SZ NS_INT16SZ NS_INT8SZ INADDRSZ NS_INADDRSZ IN6ADDRSZ NS_IN6ADDRSZ INDIR_MASK NS_CMPRSFLGS NAMESERVER_PORT NS_DEFAULTPORT INT8SZ

	:header
	:RRs
	:constants
	:all

Michael Robinton, michael@bizsystems.com

Copyright 2003, Michael Robinton & BizSystems This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

perl(1), /usr/include/resolv.h /usr/include/arpa/nameser.h /usr/include/namser_compat.h