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# $Id: 05-CNAME.t 1362 2015-06-23 08:47:14Z willem $ -*-perl-*-
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use strict;
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use Test::More tests => 13;
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use Net::DNS;
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my $name = 'CNAME.example';
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my $type = 'CNAME';
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my $code = 5;
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my @attr = qw( cname );
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my @data = qw( example.com );
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my @also = qw( );
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my $wire = '076578616d706c6503636f6d00';
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{
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my $typecode = unpack 'xn', new Net::DNS::RR(". $type")->encode;
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is( $typecode, $code, "$type RR type code = $code" );
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my $hash = {};
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@{$hash}{@attr} = @data;
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my $rr = new Net::DNS::RR(
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name => $name,
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type => $type,
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%$hash
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);
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my $string = $rr->string;
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my $rr2 = new Net::DNS::RR($string);
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is( $rr2->string, $string, 'new/string transparent' );
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is( $rr2->encode, $rr->encode, 'new($string) and new(%hash) equivalent' );
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foreach (@attr) {
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is( $rr->$_, $hash->{$_}, "expected result from rr->$_()" );
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}
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foreach (@also) {
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is( $rr2->$_, $rr->$_, "additional attribute rr->$_()" );
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}
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my $null = new Net::DNS::RR("$name NULL")->encode;
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my $empty = new Net::DNS::RR("$name $type")->encode;
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my $rxbin = decode Net::DNS::RR( \$empty )->encode;
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my $txtext = new Net::DNS::RR("$name $type")->string;
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my $rxtext = new Net::DNS::RR($txtext)->encode;
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my $encoded = $rr->encode;
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my $decoded = decode Net::DNS::RR( \$encoded );
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my $hex1 = unpack 'H*', $encoded;
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my $hex2 = unpack 'H*', $decoded->encode;
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my $hex3 = unpack 'H*', substr( $encoded, length $null );
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is( $hex2, $hex1, 'encode/decode transparent' );
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is( $hex3, $wire, 'encoded RDATA matches example' );
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is( length($empty), length($null), 'encoded RDATA can be empty' );
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is( length($rxbin), length($null), 'decoded RDATA can be empty' );
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is( length($rxtext), length($null), 'string RDATA can be empty' );
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}
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{
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my $lc = new Net::DNS::RR( lc ". $type @data" );
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my $rr = new Net::DNS::RR( uc ". $type @data" );
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my $hash = {};
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my $predecessor = $rr->encode( 0, $hash );
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my $compressed = $rr->encode( length $predecessor, $hash );
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ok( length $compressed < length $predecessor, 'encoded RDATA compressible' );
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isnt( $rr->encode, $lc->encode, 'encoded RDATA names not downcased' );
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is( $rr->canonical, $lc->encode, 'canonical RDATA names downcased' );
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}
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{
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my $rr = new Net::DNS::RR(". $type");
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foreach (@attr) {
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ok( !$rr->$_(), "'$_' attribute of empty RR undefined" );
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}
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}
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exit;
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