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#!/usr/bin/perl
# $Id: 03-rr.t 1910 2023-03-30 19:16:30Z willem $ -*-perl-*-
#
use strict;
use warnings;
use Test::More tests => 106;
use TestToolkit;
use_ok('Net::DNS::RR');
foreach my $testcase ( ## check plausible ways to create empty record
'example.com A',
'example.com IN',
'example.com IN A',
'example.com IN 123 A',
'example.com 123 A',
'example.com 123 IN A',
'example.com 123 In Aaaa',
'example.com A \\# 0',
) {
my $rr = Net::DNS::RR->new("$testcase");
is( length( $rr->rdata ), 0, "Net::DNS::RR->new( $testcase )" );
}
my ( $name, $class, $ttl, $type, $rdata ) = qw(example.com IN 123 A 192.0.2.1);
for my $rr ( Net::DNS::RR->new("$name $ttl $class $type $rdata") ) {
my $rdlen = length $rr->rdata; ## check basic functions
is( $rr->name, $name, 'expected value returned by $rr->name' );
is( $rr->owner, $name, 'expected value returned by $rr->owner' );
is( $rr->type, $type, 'expected value returned by $rr->type' );
is( $rr->class, $class, 'expected value returned by $rr->class' );
is( $rr->TTL, $ttl, 'expected value returned by $rr->TTL' );
is( $rr->rdstring, $rdata, 'expected value returned by $rr->rdstring' );
is( $rr->rdlength, $rdlen, 'expected value returned by $rr->rdlength' );
}
for my $example ( Net::DNS::RR->new('example.com. 0 IN A 192.0.2.1') ) {
my $expect = $example->string; ## check basic parsing of all acceptable forms of A record
foreach my $testcase (
join( "\t", qw( example.com 0 IN A ), q(\# 4 c0 00 02 01) ),
join( "\t", qw( example.com 0 IN A ), q(\# 4 c0000201 ) ),
'example.com 0 IN A 192.0.2.1',
'example.com 0 IN TYPE1 192.0.2.1',
'example.com 0 CLASS1 A 192.0.2.1',
'example.com 0 CLASS1 TYPE1 192.0.2.1',
'example.com 0 A 192.0.2.1',
'example.com 0 TYPE1 192.0.2.1',
'example.com IN A 192.0.2.1',
'example.com IN TYPE1 192.0.2.1',
'example.com CLASS1 A 192.0.2.1',
'example.com CLASS1 TYPE1 192.0.2.1',
'example.com A 192.0.2.1',
'example.com TYPE1 192.0.2.1',
'example.com IN 0 A 192.0.2.1',
'example.com IN 0 TYPE1 192.0.2.1',
'example.com CLASS1 0 A 192.0.2.1',
'example.com CLASS1 0 TYPE1 192.0.2.1',
) {
my $rr = Net::DNS::RR->new("$testcase");
$rr->ttl( $example->ttl ); # TTL only shown if defined
is( $rr->string, $expect, "Net::DNS::RR->new( $testcase )" );
}
}
for my $example ( Net::DNS::RR->new('example.com. 0 IN TXT "txt-data"') ) {
my $expect = $example->string; ## check parsing of comments, quotes and brackets
foreach my $testcase (
q(example.com 0 IN TXT txt-data ; space delimited),
q(example.com 0 TXT txt-data),
q(example.com IN TXT txt-data),
q(example.com TXT txt-data),
q(example.com IN 0 TXT txt-data),
q(example.com 0 IN TXT txt-data ; tab delimited),
q(example.com 0 TXT txt-data),
q(example.com IN TXT txt-data),
q(example.com TXT txt-data),
q(example.com IN 0 TXT txt-data),
q(example.com 0 IN TXT "txt-data" ; "quoted"),
q(example.com 0 TXT "txt-data"),
q(example.com IN TXT "txt-data"),
q(example.com TXT "txt-data"),
q(example.com IN 0 TXT "txt-data"),
'example.com ( 0 IN TXT txt-data ) ; bracketed',
) {
my $rr = Net::DNS::RR->new("$testcase");
$rr->ttl( $example->ttl ); # TTL only shown if defined
is( $rr->string, $expect, "Net::DNS::RR->new( $testcase )" );
}
}
foreach my $testcase ( ## check object construction from attribute list
[type => 'A', address => '192.0.2.1'],
[type => 'A', address => ['192.0.2.1']],
) {
my $rdata = Net::DNS::RR->new(@$testcase)->rdata;
my @array = map { ref($_) ? "[@$_]" : $_ } @$testcase;
is( length($rdata), 4, "Net::DNS::RR->new(@array)" );
}
foreach my $testcase (
[type => 'A', rdata => ''],
[name => 'example.com', type => 'MX'],
[type => 'MX', class => 'IN', ttl => 123],
) {
my $rr = Net::DNS::RR->new(@$testcase);
is( length( $rr->rdstring ), 0, "Net::DNS::RR->new( @$testcase )" );
}
foreach my $testcase ( ## check encode/decode functions
'example.com A',
'example.com IN',
'example.com IN A',
'example.com IN 123 A',
'example.com 123 A',
'example.com 123 IN A',
'example.com A 192.0.2.1',
'1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.B.D.0.1.0.0.2.ip6.arpa PTR example.com.'
) {
my $rr = Net::DNS::RR->new("$testcase");
my $encoded = $rr->encode;
my $decoded = Net::DNS::RR->decode( \$encoded );
$rr->ttl( $decoded->ttl ) unless $rr->ttl;
is( $decoded->string, $rr->string, "encode/decode $testcase" );
}
for my $rr ( Net::DNS::RR->new( type => 'OPT' ) ) {
my $encoded = $rr->encode; ## check OPT decode special case
my ( $decoded, $offset ) = Net::DNS::RR->decode( \$encoded );
is( $offset, length($encoded), 'decode OPT RR' );
}
foreach my $testcase ( ## check canonical encode function
'example.com 0 IN A',
'EXAMPLE.com 123 A 192.0.2.1',
) {
my $rr = Net::DNS::RR->new("$testcase");
my $expected = unpack 'H*', $rr->encode(0);
my $canonical = unpack 'H*', $rr->canonical;
is( $canonical, $expected, "canonical encode $testcase" );
}
foreach my $testcase ( ## check plain and generic formats
[owner => 'example.com.', type => 'A'],
[owner => 'example.com.', type => 'A', rdata => ''],
['example.com. IN NS a.iana-servers.net.'],
[ 'example.com. IN SOA (
sns.dns.icann.org. noc.dns.icann.org.
2015082417 ;serial
7200 ;refresh
3600 ;retry
1209600 ;expire
3600 ;minimum
)'
],
[owner => 'example.com.', type => 'ATMA'], ## unimplemented
[owner => 'example.com.', type => 'ATMA', rdata => ''],
[owner => 'example.com.', type => 'ATMA', rdata => 'octets'],
) {
my $rr = Net::DNS::RR->new(@$testcase);
my $type = $rr->type;
my $plain = Net::DNS::RR->new( $rr->plain );
is( $plain->string, $rr->string, "parse rr->plain format $type" );
my $rfc3597 = Net::DNS::RR->new( $rr->generic );
is( $rfc3597->string, $rr->string, "parse rr->generic format $type" );
}
foreach my $attr ( [], ['preference'], ['X'] ) { ## check RR sorting functions
my $func = Net::DNS::RR::MX->get_rrsort_func(@$attr);
is( ref($func), 'CODE', "MX->get_rrsort_func(@$attr)" );
}
eval { ## no critic # exercise printing functions
require Data::Dumper;
require IO::File;
local $Data::Dumper::Maxdepth;
local $Data::Dumper::Sortkeys;
local $Data::Dumper::Useqq;
my $object = Net::DNS::RR->new('example.com A 192.0.2.1');
my $file = "03-rr.tmp";
my $handle = IO::File->new( $file, '>' ) || die "Could not open $file for writing";
select( ( select($handle), $object->print )[0] );
select( ( select($handle), $object->dump )[0] );
$Data::Dumper::Maxdepth = 6;
$Data::Dumper::Sortkeys = 1;
$Data::Dumper::Useqq = 1;
select( ( select($handle), $object->dump )[0] );
close($handle);
unlink($file);
Net::DNS::RR::_wrap( 'exercise', '', "\n", "\n", "line\n", 'wrapping' );
};
is( Net::DNS::RR->new( type => 'A' )->DESTROY, undef, 'DESTROY() exists to placate pre-5.18 AUTOLOAD' );
exception( 'unrecognised class method', sub { Net::DNS::RR->unknown() } );
noexception( 'RR->unknown() returns undef', sub { die if defined Net::DNS::RR->unknown() } );
exception( "unparsable RR->new(undef)", sub { Net::DNS::RR->new(undef) } );
exception( "unparsable RR->new( [] )", sub { Net::DNS::RR->new( [] ) } );
exception( "unparsable RR->new( {} )", sub { Net::DNS::RR->new( {} ) } );
exception( "unparsable RR->new('()')", sub { Net::DNS::RR->new('()') } );
exception( "unparsable RR->new('. NULL x')", sub { Net::DNS::RR->new('. NULL x') } );
exception( "unparsable RR->new('. ATMA x')", sub { Net::DNS::RR->new('. ATMA x') } );
exception( "unparsable RR->new('. BOGUS x')", sub { Net::DNS::RR->new('. BOGUS x') } );
foreach ( '# 0 c0000201', '# 3 c0000201', '# 5 c0000201' ) {
exception( "mismatched length $_", sub { Net::DNS::RR->new(". A $_") } );
}
exception( 'RR type is immutable', sub { Net::DNS::RR->new( type => 'AAAA' )->type('BOGUS') } );
exception( 'unrecognised time unit', sub { Net::DNS::RR->new( type => 'AAAA' )->ttl('1y') } );
exception( 'unrecognised method', sub { Net::DNS::RR->new( type => 'AAAA', bogus => 0 ) } );
exception( 'unimplemented RRtype', sub { Net::DNS::RR->new( type => 'ATMA', bogus => 0 ) } );
exception( 'RR->string warning', sub { Net::DNS::RR->new( type => 'MINFO', emailbx => '.' )->string } );
exception( 'RR->rdstring warning', sub { Net::DNS::RR->new( type => 'MINFO', emailbx => '.' )->rdstring } );
foreach ( '', '0841424344454647480001', '0000010001000000010004', ) {
exception( 'decode(corrupt data)', sub { Net::DNS::RR->decode( \pack 'H*', $_ ) } );
}
exception( 'rdatastr deprecation warning', sub { Net::DNS::RR->new( type => 'AAAA' )->rdatastr for ( 1 .. 2 ) } );
exit;
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