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package Net::DNS::Parameters;
################################################
##
## Domain Name System (DNS) Parameters
## (last updated 2022-12-06)
##
################################################
use strict;
use warnings;
our $VERSION = (qw$Id: Parameters.pm 1886 2022-12-20 11:27:25Z willem $)[2];
use integer;
use Carp;
use base qw(Exporter);
our @EXPORT_OK = qw(
classbyname classbyval %classbyname
typebyname typebyval %typebyname
opcodebyname opcodebyval
rcodebyname rcodebyval
ednsoptionbyname ednsoptionbyval
dsotypebyname dsotypebyval
);
our %EXPORT_TAGS = (
class => [qw(classbyname classbyval)],
type => [qw(typebyname typebyval)],
opcode => [qw(opcodebyname opcodebyval)],
rcode => [qw(rcodebyname rcodebyval)],
ednsoption => [qw(ednsoptionbyname ednsoptionbyval)],
dsotype => [qw(dsotypebyname dsotypebyval)],
);
# Registry: DNS CLASSes
my @classbyname = (
IN => 1, # RFC1035
CH => 3, # Chaosnet
HS => 4, # Hesiod
NONE => 254, # RFC2136
ANY => 255, # RFC1035
);
our %classbyval = reverse( CLASS0 => 0, @classbyname );
push @classbyname, map { /^\d/ ? $_ : lc($_) } @classbyname;
our %classbyname = ( '*' => 255, @classbyname );
# Registry: Resource Record (RR) TYPEs
my @typebyname = (
A => 1, # RFC1035
NS => 2, # RFC1035
MD => 3, # RFC1035
MF => 4, # RFC1035
CNAME => 5, # RFC1035
SOA => 6, # RFC1035
MB => 7, # RFC1035
MG => 8, # RFC1035
MR => 9, # RFC1035
NULL => 10, # RFC1035
WKS => 11, # RFC1035
PTR => 12, # RFC1035
HINFO => 13, # RFC1035
MINFO => 14, # RFC1035
MX => 15, # RFC1035
TXT => 16, # RFC1035
RP => 17, # RFC1183
AFSDB => 18, # RFC1183 RFC5864
X25 => 19, # RFC1183
ISDN => 20, # RFC1183
RT => 21, # RFC1183
NSAP => 22, # RFC1706
'NSAP-PTR' => 23, # RFC1706
SIG => 24, # RFC2536 RFC2931 RFC3110 RFC4034
KEY => 25, # RFC2536 RFC2539 RFC3110 RFC4034
PX => 26, # RFC2163
GPOS => 27, # RFC1712
AAAA => 28, # RFC3596
LOC => 29, # RFC1876
NXT => 30, # RFC2535 RFC3755
EID => 31, # http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt
NIMLOC => 32, # http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt
SRV => 33, # RFC2782
ATMA => 34, # http://www.broadband-forum.org/ftp/pub/approved-specs/af-dans-0152.000.pdf
NAPTR => 35, # RFC3403
KX => 36, # RFC2230
CERT => 37, # RFC4398
A6 => 38, # RFC2874 RFC3226 RFC6563
DNAME => 39, # RFC6672
SINK => 40, # draft-eastlake-kitchen-sink
OPT => 41, # RFC3225 RFC6891
APL => 42, # RFC3123
DS => 43, # RFC4034
SSHFP => 44, # RFC4255
IPSECKEY => 45, # RFC4025
RRSIG => 46, # RFC4034
NSEC => 47, # RFC4034 RFC9077
DNSKEY => 48, # RFC4034
DHCID => 49, # RFC4701
NSEC3 => 50, # RFC5155 RFC9077
NSEC3PARAM => 51, # RFC5155
TLSA => 52, # RFC6698
SMIMEA => 53, # RFC8162
HIP => 55, # RFC8005
NINFO => 56, #
RKEY => 57, #
TALINK => 58, #
CDS => 59, # RFC7344
CDNSKEY => 60, # RFC7344
OPENPGPKEY => 61, # RFC7929
CSYNC => 62, # RFC7477
ZONEMD => 63, # RFC8976
SVCB => 64, # RFC-ietf-dnsop-svcb-https-10
HTTPS => 65, # RFC-ietf-dnsop-svcb-https-10
SPF => 99, # RFC7208
UINFO => 100, # IANA-Reserved
UID => 101, # IANA-Reserved
GID => 102, # IANA-Reserved
UNSPEC => 103, # IANA-Reserved
NID => 104, # RFC6742
L32 => 105, # RFC6742
L64 => 106, # RFC6742
LP => 107, # RFC6742
EUI48 => 108, # RFC7043
EUI64 => 109, # RFC7043
TKEY => 249, # RFC2930
TSIG => 250, # RFC8945
IXFR => 251, # RFC1995
AXFR => 252, # RFC1035 RFC5936
MAILB => 253, # RFC1035
MAILA => 254, # RFC1035
ANY => 255, # RFC1035 RFC6895 RFC8482
URI => 256, # RFC7553
CAA => 257, # RFC8659
AVC => 258, #
DOA => 259, # draft-durand-doa-over-dns
AMTRELAY => 260, # RFC8777
TA => 32768, # http://cameo.library.cmu.edu/ http://www.watson.org/~weiler/INI1999-19.pdf
DLV => 32769, # RFC8749 RFC4431
);
our %typebyval = reverse( TYPE0 => 0, @typebyname );
push @typebyname, map { /^\d/ ? $_ : lc($_) } @typebyname;
our %typebyname = ( '*' => 255, @typebyname );
# Registry: DNS OpCodes
my @opcodebyname = (
QUERY => 0, # RFC1035
IQUERY => 1, # RFC3425
STATUS => 2, # RFC1035
NOTIFY => 4, # RFC1996
UPDATE => 5, # RFC2136
DSO => 6, # RFC8490
);
our %opcodebyval = reverse @opcodebyname;
push @opcodebyname, map { /^\d/ ? $_ : lc($_) } @opcodebyname;
our %opcodebyname = ( NS_NOTIFY_OP => 4, @opcodebyname );
# Registry: DNS RCODEs
my @rcodebyname = (
NOERROR => 0, # RFC1035
FORMERR => 1, # RFC1035
SERVFAIL => 2, # RFC1035
NXDOMAIN => 3, # RFC1035
NOTIMP => 4, # RFC1035
REFUSED => 5, # RFC1035
YXDOMAIN => 6, # RFC2136 RFC6672
YXRRSET => 7, # RFC2136
NXRRSET => 8, # RFC2136
NOTAUTH => 9, # RFC2136
NOTAUTH => 9, # RFC8945
NOTZONE => 10, # RFC2136
DSOTYPENI => 11, # RFC8490
BADVERS => 16, # RFC6891
BADSIG => 16, # RFC8945
BADKEY => 17, # RFC8945
BADTIME => 18, # RFC8945
BADMODE => 19, # RFC2930
BADNAME => 20, # RFC2930
BADALG => 21, # RFC2930
BADTRUNC => 22, # RFC8945
BADCOOKIE => 23, # RFC7873
);
our %rcodebyval = reverse( BADSIG => 16, @rcodebyname );
push @rcodebyname, map { /^\d/ ? $_ : lc($_) } @rcodebyname;
our %rcodebyname = @rcodebyname;
# Registry: DNS EDNS0 Option Codes (OPT)
my @ednsoptionbyname = (
LLQ => 1, # RFC8764
UL => 2, # http://files.dns-sd.org/draft-sekar-dns-ul.txt
NSID => 3, # RFC5001
DAU => 5, # RFC6975
DHU => 6, # RFC6975
N3U => 7, # RFC6975
'CLIENT-SUBNET' => 8, # RFC7871
EXPIRE => 9, # RFC7314
COOKIE => 10, # RFC7873
'TCP-KEEPALIVE' => 11, # RFC7828
PADDING => 12, # RFC7830
CHAIN => 13, # RFC7901
'KEY-TAG' => 14, # RFC8145
'EXTENDED-ERROR' => 15, # RFC8914
'CLIENT-TAG' => 16, # draft-bellis-dnsop-edns-tags
'SERVER-TAG' => 17, # draft-bellis-dnsop-edns-tags
'UMBRELLA-IDENT' => 20292, # https://developer.cisco.com/docs/cloud-security/#!integrating-network-devic
DEVICEID => 26946, # https://developer.cisco.com/docs/cloud-security/#!network-devices-getting-s
);
our %ednsoptionbyval = reverse @ednsoptionbyname;
push @ednsoptionbyname, map { /^\d/ ? $_ : lc($_) } @ednsoptionbyname;
our %ednsoptionbyname = @ednsoptionbyname;
# Registry: DNS Header Flags
my @dnsflagbyname = (
AA => 0x0400, # RFC1035
TC => 0x0200, # RFC1035
RD => 0x0100, # RFC1035
RA => 0x0080, # RFC1035
AD => 0x0020, # RFC4035 RFC6840
CD => 0x0010, # RFC4035 RFC6840
);
push @dnsflagbyname, map { /^\d/ ? $_ : lc($_) } @dnsflagbyname;
our %dnsflagbyname = @dnsflagbyname;
# Registry: EDNS Header Flags (16 bits)
my @ednsflagbyname = (
DO => 0x8000, # RFC4035 RFC3225 RFC6840
);
push @ednsflagbyname, map { /^\d/ ? $_ : lc($_) } @ednsflagbyname;
our %ednsflagbyname = @ednsflagbyname;
# Registry: DSO Type Codes
my @dsotypebyname = (
KEEPALIVE => 0x0001, # RFC8490
RETRYDELAY => 0x0002, # RFC8490
ENCRYPTIONPADDING => 0x0003, # RFC8490
SUBSCRIBE => 0x0040, # RFC8765
PUSH => 0x0041, # RFC8765
UNSUBSCRIBE => 0x0042, # RFC8765
RECONFIRM => 0x0043, # RFC8765
);
our %dsotypebyval = reverse @dsotypebyname;
push @dsotypebyname, map { /^\d/ ? $_ : lc($_) } @dsotypebyname;
our %dsotypebyname = @dsotypebyname;
# Registry: Extended DNS Error Codes
my @dnserrorbyval = (
0 => 'Other Error', # RFC8914
1 => 'Unsupported DNSKEY Algorithm', # RFC8914
2 => 'Unsupported DS Digest Type', # RFC8914
3 => 'Stale Answer', # RFC8914 RFC8767
4 => 'Forged Answer', # RFC8914
5 => 'DNSSEC Indeterminate', # RFC8914
6 => 'DNSSEC Bogus', # RFC8914
7 => 'Signature Expired', # RFC8914
8 => 'Signature Not Yet Valid', # RFC8914
9 => 'DNSKEY Missing', # RFC8914
10 => 'RRSIGs Missing', # RFC8914
11 => 'No Zone Key Bit Set', # RFC8914
12 => 'NSEC Missing', # RFC8914
13 => 'Cached Error', # RFC8914
14 => 'Not Ready', # RFC8914
15 => 'Blocked', # RFC8914
16 => 'Censored', # RFC8914
17 => 'Filtered', # RFC8914
18 => 'Prohibited', # RFC8914
19 => 'Stale NXDomain Answer', # RFC8914
20 => 'Not Authoritative', # RFC8914
21 => 'Not Supported', # RFC8914
22 => 'No Reachable Authority', # RFC8914
23 => 'Network Error', # RFC8914
24 => 'Invalid Data', # RFC8914
25 => 'Signature Expired before Valid', # https://github.com/NLnetLabs/unbound/pull/604#discussion_r802678343
26 => 'Too Early', # RFC9250
27 => 'Unsupported NSEC3 Iterations Value', # RFC9276
28 => 'Unable to conform to policy', #
);
our %dnserrorbyval = @dnserrorbyval;
########
# The following functions are wrappers around similarly named hashes.
sub classbyname {
my $name = shift;
return $classbyname{$name} || $classbyname{uc $name} || return do {
croak qq[unknown class "$name"] unless $name =~ m/^(CLASS)?(\d+)/i;
my $val = 0 + $2;
croak qq[classbyname("$name") out of range] if $val > 0xffff;
return $val;
}
}
sub classbyval {
my $val = shift;
return $classbyval{$val} || return do {
$val += 0;
croak qq[classbyval($val) out of range] if $val > 0xffff;
return "CLASS$val";
}
}
sub typebyname {
my $name = shift;
return $typebyname{$name} || return do {
if ( $name =~ m/^(TYPE)?(\d+)/i ) {
my $val = 0 + $2;
croak qq[typebyname("$name") out of range] if $val > 0xffff;
return $val;
}
_typespec("$name.RRNAME") unless $typebyname{uc $name};
return $typebyname{uc $name} || croak qq[unknown type "$name"];
}
}
sub typebyval {
my $val = shift;
return $typebyval{$val} || return do {
$val += 0;
croak qq[typebyval($val) out of range] if $val > 0xffff;
$typebyval{$val} = "TYPE$val";
_typespec("$val.RRTYPE");
return $typebyval{$val};
}
}
sub opcodebyname {
my $arg = shift;
my $val = $opcodebyname{$arg};
return $val if defined $val;
return $arg if $arg =~ /^\d/;
croak qq[unknown opcode "$arg"];
}
sub opcodebyval {
my $val = shift;
return $opcodebyval{$val} || return "$val";
}
sub rcodebyname {
my $arg = shift;
my $val = $rcodebyname{$arg};
return $val if defined $val;
return $arg if $arg =~ /^\d/;
croak qq[unknown rcode "$arg"];
}
sub rcodebyval {
my $val = shift;
return $rcodebyval{$val} || return "$val";
}
sub ednsoptionbyname {
my $arg = shift;
my $val = $ednsoptionbyname{$arg};
return $val if defined $val;
return $arg if $arg =~ /^\d/;
croak qq[unknown option "$arg"];
}
sub ednsoptionbyval {
my $val = shift;
return $ednsoptionbyval{$val} || return "$val";
}
sub dsotypebyname {
my $arg = shift;
my $val = $dsotypebyname{$arg};
return $val if defined $val;
return $arg if $arg =~ /^\d/;
croak qq[unknown DSO type "$arg"];
}
sub dsotypebyval {
my $val = shift;
return $dsotypebyval{$val} || return "$val";
}
use constant EXTLANG => defined eval { require Net::DNS::Extlang };
sub _typespec {
my $generate = defined wantarray;
return EXTLANG ? eval <<'END' : ''; # no critic
my ($node) = @_; ## draft-levine-dnsextlang
my $instance = Net::DNS::Extlang->new();
my $basename = $instance->domain || return '';
require Net::DNS::Resolver;
my $resolver = Net::DNS::Resolver->new();
my $response = $resolver->send( "$node.$basename", 'TXT' ) || return '';
foreach my $txt ( grep { $_->type eq 'TXT' } $response->answer ) {
my @stanza = $txt->txtdata;
my ( $tag, $identifier, @attribute ) = @stanza;
next unless defined($tag) && $tag =~ /^RRTYPE=\d+$/;
if ( $identifier =~ /^(\w+):(\d+)\W*/ ) {
my ( $mnemonic, $rrtype ) = ( uc($1), $2 );
croak qq["$mnemonic" is a CLASS identifier] if $classbyname{$mnemonic};
for ( typebyval($rrtype) ) {
next if /^$mnemonic$/i; # duplicate registration
croak qq["$mnemonic" conflicts with TYPE$rrtype ($_)] unless /^TYPE\d+$/;
my $known = $typebyname{$mnemonic};
croak qq["$mnemonic" conflicts with TYPE$known] if $known;
$typebyval{$rrtype} = $mnemonic;
$typebyname{$mnemonic} = $rrtype;
}
}
return unless $generate;
my $recipe = $instance->xlstorerecord( $identifier, @attribute );
return $instance->compilerr($recipe);
}
END
}
1;
__END__
=head1 NAME
Net::DNS::Parameters - DNS parameter assignments
=head1 SYNOPSIS
use Net::DNS::Parameters;
=head1 DESCRIPTION
Net::DNS::Parameters is a Perl package representing the DNS parameter
allocation (key,value) tables as recorded in the definitive registry
maintained and published by IANA.
=head1 FUNCTIONS
=head2 classbyname, typebyname, opcodebyname, rcodebyname, ednsoptionbyname, dsotypebyname
Access functions which return the numerical code corresponding to
the given mnemonic.
=head2 classbyval, typebyval, opcodebyval, rcodebyval, ednsoptionbyval, dsotypebyval
Access functions which return the canonical mnemonic corresponding to
the given numerical code.
=head1 COPYRIGHT
Copyright (c)2012,2016 Dick Franks.
Portions Copyright (c)1997 Michael Fuhr.
Portions Copyright (c)2003 Olaf Kolkman.
All rights reserved.
=head1 LICENSE
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted, provided
that the original copyright notices appear in all copies and that both
copyright notice and this permission notice appear in supporting
documentation, and that the name of the author not be used in advertising
or publicity pertaining to distribution of the software without specific
prior written permission.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
=head1 SEE ALSO
L<perl>, L<Net::DNS>,
L<IANA Registry|http://www.iana.org/assignments/dns-parameters>
=cut