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|
#!/usr/bin/perl
# $Id: 72-TSIG-verify.t 1990 2024-09-18 13:16:07Z willem $ -*-perl-*-
#
use strict;
use warnings;
use IO::File;
use Test::More;
use TestToolkit;
use Net::DNS;
my @prerequisite = qw(
Digest::HMAC
Digest::MD5
Digest::SHA
MIME::Base64
);
foreach my $package (@prerequisite) {
next if eval "require $package"; ## no critic
plan skip_all => "$package not installed";
exit;
}
plan tests => 26;
my $tsig = Net::DNS::RR->new( type => 'TSIG' );
my $class = ref($tsig);
my $tsigkey = 'tsigkey72.txt';
END { unlink($tsigkey) if defined $tsigkey; }
my $fh_tsigkey = IO::File->new( $tsigkey, '>' ) || die "$tsigkey $!";
print $fh_tsigkey <<'END';
key "host1-host2.example." {
algorithm hmac-sha256;
secret "f+JImRXRzLpKseG+bP+W9Vwb2QAgtFuIlRU80OA3NU8=";
};
END
close($fh_tsigkey);
for my $packet ( Net::DNS::Packet->new('query.example') ) {
$packet->sign_tsig($tsigkey);
$packet->encode;
my $verified = $packet->verify();
my $verifyerr = $packet->verifyerr();
ok( $verified, "verify signed packet $verifyerr" );
is( ref($verified), $class, 'packet->verify returns TSIG' );
}
for my $packet ( Net::DNS::Packet->new('query.example') ) {
$packet->sign_tsig($tsigkey);
$packet->encode;
$packet->push( update => rr_add( type => 'NULL' ) );
my $verified = $packet->verify();
my $verifyerr = $packet->verifyerr();
ok( !$verified, "verify corrupt packet $verifyerr" );
is( $verified, undef, 'packet->verify returns undef' );
}
for my $query ( Net::DNS::Packet->new('query.example') ) {
$query->sign_tsig($tsigkey);
$query->encode;
my $reply = $query->reply;
$reply->sign_tsig($query);
$reply->encode;
my $verified = $reply->verify($query);
my $verifyerr = $reply->verifyerr();
ok( $verified, "verify reply packet $verifyerr" );
}
{
my @packet = map { Net::DNS::Packet->new($_) } ( 0 .. 3 );
my $signed = $tsigkey;
foreach my $packet (@packet) {
$signed = $packet->sign_tsig($signed);
$packet->encode;
is( ref($signed), $class, 'sign multi-packet' );
}
my @verified;
foreach my $packet (@packet) {
@verified = $packet->verify(@verified);
my ($verified) = @verified;
my $verifyerr = $packet->verifyerr();
ok( $verified, "verify multi-packet $verifyerr" );
}
my @unverifiable;
$packet[2]->sigrr->fudge(0);
foreach my $packet (@packet) {
@unverifiable = $packet->verify(@unverifiable);
my $verifyerr = $packet->verifyerr();
ok( 1, "verify corrupt multi-packet $verifyerr" );
}
my ($verified) = @unverifiable;
is( $verified, undef, 'final packet->verify returns undef' );
}
for my $packet ( Net::DNS::Packet->new('query.example') ) {
$packet->sign_tsig( $tsigkey, fudge => 0 );
my $encoded = $packet->encode;
sleep 2; # guarantee one complete second delay
my $query = Net::DNS::Packet->new( \$encoded );
$query->verify();
is( $query->verifyerr, 'BADTIME', 'unverifiable query packet: BADTIME' );
}
for my $packet ( Net::DNS::Packet->new() ) {
$packet->sign_tsig($tsigkey);
$packet->sigrr->error('BADTIME');
my $encoded = $packet->encode;
my $decoded = Net::DNS::Packet->new( \$encoded );
ok( $decoded->sigrr->other, 'time appended to BADTIME response' );
}
for my $query ( Net::DNS::Packet->new('query.example') ) {
$query->sign_tsig($tsigkey);
$query->encode;
my $reply = $query->reply;
$reply->sign_tsig($query);
$reply->encode;
$reply->sigrr->algorithm('hmac-sha1');
my $verified = $reply->verify($query);
my $verifyerr = $reply->verifyerr();
ok( !$verified, "mismatched verify keys $verifyerr" );
}
for my $packet ( Net::DNS::Packet->new('query.example') ) {
$packet->sign_tsig($tsigkey);
$packet->encode;
my $tsig = $packet->reply->sign_tsig($tsigkey);
$tsig->algorithm('hmac-sha1');
my $verified = $packet->verify($tsig);
my $verifyerr = $packet->verifyerr();
ok( !$verified, "mismatched verify keys $verifyerr" );
}
for my $packet ( Net::DNS::Packet->new() ) {
$packet->sign_tsig($tsigkey);
$packet->encode;
$packet->sigrr->macbin( substr $packet->sigrr->macbin, 0, 9 );
$packet->verify();
is( $packet->verifyerr, 'BADTRUNC', 'signature too short: BADTRUNC' );
}
for my $packet ( Net::DNS::Packet->new() ) {
$packet->sign_tsig($tsigkey);
$packet->encode;
my $macbin = $packet->sigrr->macbin;
$packet->sigrr->macbin( join '', $packet->sigrr->macbin, 'x' );
$packet->verify();
is( $packet->verifyerr, 'BADTRUNC', 'signature too long: BADTRUNC' );
}
for my $packet ( Net::DNS::Packet->new() ) {
$packet->sign_tsig($tsigkey);
my $null = Net::DNS::RR->new( type => 'NULL' );
exception( 'unexpected argument', sub { $packet->sigrr->verify($null) } );
exception( 'unexpected argument', sub { $packet->sigrr->verify( $packet, $null ) } );
}
exit;
|
