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# $Id: 05-CERT.t 1528 2017-01-18 21:44:58Z willem $	-*-perl-*-
#

use strict;
use Test::More;
use Net::DNS;

my @prerequisite = qw(
		MIME::Base64
		);

foreach my $package (@prerequisite) {
	next if eval "require $package";
	plan skip_all => "$package not installed";
	exit;
}

plan tests => 24;


my $name = 'CERT.example';
my $type = 'CERT';
my $code = 37;
my @attr = qw( certtype keytag algorithm cert );
my @data = qw( 1 2 3 MTIzNDU2Nzg5YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXo= );
my @also = qw( certificate format tag );

my $wire = '00010002033132333435363738396162636465666768696a6b6c6d6e6f707172737475767778797a';


{
	my $typecode = unpack 'xn', new Net::DNS::RR(". $type")->encode;
	is( $typecode, $code, "$type RR type code = $code" );

	my $hash = {};
	@{$hash}{@attr} = @data;

	my $rr = new Net::DNS::RR(
		name => $name,
		type => $type,
		%$hash
		);

	my $string = $rr->string;
	my $rr2	   = new Net::DNS::RR($string);
	is( $rr2->string, $string, 'new/string transparent' );

	is( $rr2->encode, $rr->encode, 'new($string) and new(%hash) equivalent' );

	foreach (@attr) {
		next if /certificate/;
		is( $rr->$_, $hash->{$_}, "expected result from rr->$_()" );
	}

	foreach (@also) {
		is( $rr2->$_, $rr->$_, "additional attribute rr->$_()" );
	}


	my $null    = new Net::DNS::RR("$name NULL")->encode;
	my $empty   = new Net::DNS::RR("$name $type")->encode;
	my $rxbin   = decode Net::DNS::RR( \$empty )->encode;
	my $txtext  = new Net::DNS::RR("$name $type")->string;
	my $rxtext  = new Net::DNS::RR($txtext)->encode;
	my $encoded = $rr->encode;
	my $decoded = decode Net::DNS::RR( \$encoded );
	my $hex1    = unpack 'H*', $encoded;
	my $hex2    = unpack 'H*', $decoded->encode;
	my $hex3    = unpack 'H*', substr( $encoded, length $null );
	is( $hex2,	     $hex1,	    'encode/decode transparent' );
	is( $hex3,	     $wire,	    'encoded RDATA matches example' );
	is( length($empty),  length($null), 'encoded RDATA can be empty' );
	is( length($rxbin),  length($null), 'decoded RDATA can be empty' );
	is( length($rxtext), length($null), 'string RDATA can be empty' );
}


{
	is( Net::DNS::RR->new("foo IN CERT 0 2 3 foo=")->certtype,  0,	'certtype may be zero' );
	is( Net::DNS::RR->new("foo IN CERT 1 0 3 foo=")->keytag,    0,	'keytag may be zero' );
	is( Net::DNS::RR->new("foo IN CERT 1 2 0 foo=")->algorithm, 0,	'algorithm may be zero' );
	is( Net::DNS::RR->new("foo IN CERT 1 2 3 ''  ")->cert,	    '', 'cert may be empty' );
}


{
	my $rr = Net::DNS::RR->new("foo IN CERT 1 2 3 foo=");
	is( $rr->algorithm('MNEMONIC'), 'DSA', 'algorithm mnemonic' );
	$rr->algorithm(255);
	is( $rr->algorithm('MNEMONIC'), 255, 'algorithm with no mnemonic' );

	eval { $rr->algorithm('X'); };
	my $exception = $1 if $@ =~ /^(.+)\n/;
	ok( $exception ||= '', "unknown mnemonic\t[$exception]" );
}


{
	my $rr = Net::DNS::RR->new("foo IN CERT 1 2 3 foo=");
	is( $rr->certtype('PKIX'), 1, 'valid certtype mnemonic' );
	eval { $rr->certtype('X'); };
	my $exception = $1 if $@ =~ /^(.+)\n/;
	ok( $exception ||= '', "unknown mnemonic\t[$exception]" );
}


exit;

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