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#
#
#
use Test::Most;
bail_on_fail;
my ($image_path) = @ARGV;
ok (is_hybrid($image_path, 0), "Is hybrid");
# Verification if the Iso is hybrid
sub is_hybrid {
my ($img, $full) = @_;
open(my $iso, $img);
my $hybrid = hybrid1($iso);
$hybrid &= hybrid2($iso);
$hybrid &= hybrid3($iso);
if ($full) {
# system "dd if=$img of=/dev/my-pendrive bs=8";
}
close($iso);
return $hybrid;
}
# Check the first 512 bytes of the iso
sub hybrid1 {
my ($iso) = @_;
my $buffer;
my $hybrid;
foreach (0 .. 512) {
read($iso, $buffer, 1);
if ($buffer ne '\x00') {
$hybrid = 1;
}
}
return $hybrid;
}
#Check the 0x1fe & 0x1ff bytes of the iso
sub hybrid2 {
my ($iso) = @_;
my $hybrid;
my $buffer;
my $byte = "\x55";
seek($iso, 0x1fe, 0);
read($iso, $buffer, 1);
if ($buffer eq $byte) {
read($iso, $buffer, 1);
$byte = "\xaa";
if ($buffer eq $byte) {
$hybrid = 1;
}
}
return $hybrid;
}
# check from the 0x200 to the 0x8000 bytes
sub hybrid3 {
my ($iso) = @_;
my $hybrid = 1;
my $buffer;
seek($iso, 0x200, 0);
foreach (0x200 .. 0x8000) {
read($iso, $buffer, 1);
if ($buffer eq '\x00') {
$hybrid = 0;
}
}
return $hybrid;
}
done_testing();
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