File Coverage

blib/lib/File/VirusScan.pm

Criterion	Covered	Total	%
statement	49	57	85.9
branch	9	12	75.0
condition	3	6	50.0
subroutine	10	11	90.9
pod	3	3	100.0
total	74	89	83.1

package File::VirusScan;
use strict;
use warnings;
use Carp;
use 5.008;

use File::VirusScan::Result;
use File::VirusScan::ResultSet;

our $VERSION = '0.105';

# We don't use Module::Pluggable.  Most users of this module will have
# one or two virus scanners, with the other half-dozen or so plugins
# going unused, so there's no sense in finding/loading all plugins.
sub new
{
	my ($class, $conf) = @_;

	if(!exists $conf->{engines} || !scalar keys %{ $conf->{engines} }) {
		croak q{Must supply an 'engines' value to constructor};
	}

	my %backends;

	# Load and initialise our backend engines
	while (my ($moniker, $backend_conf) = each %{ $conf->{engines} }) {

		$moniker =~ s/[^-A-Za-z0-9_:]//;
		my $backclass = $moniker;

		substr($backclass, 0, 1, 'File::VirusScan::Engine::') if substr($backclass, 0, 1) eq '-';

		eval qq{use $backclass;};  ## no critic(StringyEval)
		if($@) {                   ## no critic(PunctuationVars)
			croak "Unable to find class $backclass for backend '$moniker'";
		}

		$backends{$moniker} = $backclass->new($backend_conf);
	}

	my $self = { always_scan => $conf->{always_scan}, };

	if(exists $conf->{order}) {
		$self->{_backends} = [ @backends{ @{ $conf->{order} } } ];
	} else {
		$self->{_backends} = [ values %backends ];
	}

	return bless $self, $class;
}

sub scan
{
	my ($self, $path) = @_;

	my $result = File::VirusScan::ResultSet->new();

	for my $back (@{ $self->{_backends} }) {

		my $scan_result = eval { $back->scan($path) };

		if($@) {
			$result->add(File::VirusScan::Result->error("Error calling ->scan(): $@"));
		} else {
			$result->add($scan_result);
		}

		if(!$self->{always_scan}
			&& $result->has_virus())
		{
			last;
		}
	}

	return $result;
}

sub get_backends
{
	my ($self) = @_;
	return $self->{_backends};
}

1;
__END__