Description :
*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
RCODE_MASK => 1111_1111_1111_0000
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
BITS_OPCODE_MASK => 1000_0111_1111_1111
* * $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, # rfc1035.txt
T_NS => 2, # rfc1035.txt
T_MD => 3, # rfc1035.txt
T_MF => 4, # rfc1035.txt
T_CNAME => 5, # rfc1035.txt
T_SOA => 6, # rfc1035.txt
T_MB => 7, # rfc1035.txt
T_MG => 8, # rfc1035.txt
T_MR => 9, # rfc1035.txt
T_NULL => 10, # rfc1035.txt
T_WKS => 11, # rfc1035.txt
T_PTR => 12, # rfc1035.txt
T_HINFO => 13, # rfc1035.txt
T_MINFO => 14, # rfc1035.txt
T_MX => 15, # rfc1035.txt
T_TXT => 16, # rfc1035.txt
T_RP => 17, # rfc1183.txt
T_AFSDB => 18, # rfc1183.txt
T_X25 => 19, # rfc1183.txt
T_ISDN => 20, # rfc1183.txt
T_RT => 21, # rfc1183.txt
T_NSAP => 22, # rfc1706.txt
T_NSAP_PTR => 23, # rfc1348.txt
T_SIG => 24, # rfc2535.txt
T_KEY => 25, # rfc2535.txt
T_PX => 26, # rfc2163.txt
T_GPOS => 27, # rfc1712.txt
T_AAAA => 28, # rfc1886.txt
T_LOC => 29, # rfc1876.txt
T_NXT => 30, # rfc2535.txt
T_EID => 31, # draft-ietf-nimrod-dns-02.txt
T_NIMLOC => 32, # draft-ietf-nimrod-dns-02.txt
T_SRV => 33, # rfc2052.txt
T_ATMA => 34, # af-saa-0069.000.txt
T_NAPTR => 35, # rfc2168.txt
T_KX => 36, # rfc2230.txt
T_CERT => 37, # rfc2538.txt
T_A6 => 38, # rfc2874.txt
T_DNAME => 39, # rfc2672.txt
T_SINK => 40, # draft-ietf-dnsind-kitchen-sink-01.txt
T_OPT => 41, # rfc2671.txt
T_APL => 42, # rfc3123.txt
T_DS => 43, # draft-ietf-dnsext-delegation-signer-15.txt
T_SSHFP => 44, # rfc4255.txt
T_IPSECKEY => 45, # rfc4025.txt
T_RRSIG => 46, # rfc4034.txt
T_NSEC => 47, # rfc4034.txt
T_DNSKEY => 48, # rfc4034.txt
T_DHCID => 49, # rfc4701.txt
T_NSEC3 => 50, # rfc5155.txt
T_NSEC3PARAM => 51, # rfc5155.txt
T_HIP => 55, # rfc5205.txt
T_NINFO => 56, # unknown
T_RKEY => 57, # draft-reid-dnsext-rkey-00.txt
T_ALINK => 58, # draft-ietf-dnsop-dnssec-trust-history-02.txt
T_CDS => 59, # draft-barwood-dnsop-ds-publish-02.txt
T_UINFO => 100, # reserved
T_UID => 101, # reserved
T_GID => 102, # reserved
T_UNSPEC => 103, # reserved
T_TKEY => 249, # rfc2930.txt
T_TSIG => 250, # rfc2931.txt
T_IXFR => 251, # rfc1995.txt
T_AXFR => 252, # rfc1035.txt
T_MAILB => 253, # rfc973.txt
T_MAILA => 254, # rfc973.txt
T_ANY => 255, # rfc1886.txt
* * (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
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