File Coverage

blib/lib/CVSS.pm

Criterion	Covered	Total	%
statement	36	43	83.7
branch	1	8	12.5
condition	1	2	50.0
subroutine	11	15	73.3
pod	5	5	100.0
total	54	73	73.9

package CVSS;

use feature ':5.10';
use strict;
use utf8;
use warnings;

use Carp     ();
use Exporter qw(import);

use constant DEBUG => $ENV{CVSS_DEBUG};

use CVSS::v2;
use CVSS::v3;
use CVSS::v4;

our @EXPORT = qw(encode_cvss decode_cvss cvss_to_xml);

our $VERSION = '1.15';
$VERSION =~ tr/_//d;    ## no critic

my $CVSS_CLASSES = {'2.0' => 'CVSS::v2', '3.0' => 'CVSS::v3', '3.1' => 'CVSS::v3', '4.0' => 'CVSS::v4'};

sub encode_cvss { __PACKAGE__->new(@_)->to_string }
sub decode_cvss { __PACKAGE__->from_vector_string(shift) }

sub cvss_to_xml { @_ > 1 ? __PACKAGE__->new(@_)->to_xml : __PACKAGE__->from_vector_string(shift)->to_xml }

sub new {

    my ($class, %params) = @_;
    Carp::croak 'Missing CVSS version' unless $params{version};

    my $cvss_class = $CVSS_CLASSES->{$params{version}} or Carp::croak 'Unknown CVSS version';
    return $cvss_class->new(%params);

}

sub from_vector_string {

    my ($class, $vector_string) = @_;

    my %metrics    = split /[\/:]/, $vector_string;
    my $version    = delete $metrics{CVSS} || '2.0';
    my $cvss_class = $CVSS_CLASSES->{$version} or Carp::croak 'Unknown CVSS version';

    DEBUG and say STDERR "-- CVSS v$version -- Vector String: $vector_string";

    return $cvss_class->new(version => sprintf('%.1f', $version), metrics => \%metrics,
        vector_string => $vector_string);

}

1;

__END__