shorewall_code/Shorewall/Actions/action.Multicast

#
# Shorewall -- /usr/share/shorewall/action.Multicast
#
# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
#
# (c) 2011-2017 Tom Eastep (teastep@shorewall.net)
#
# Complete documentation is available at http://shorewall.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of Version 2 of the GNU General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Multicast[([<action>|-[,{audit|-}])]
#
# Default action is DROP
#
###############################################################################

DEFAULTS DROP,-

?if __ADDRTYPE
    @1	-	-	-	;; -m addrtype --dst-type MULTICAST
?else
    ?begin perl;

    use strict;
    use Shorewall::IPAddrs;
    use Shorewall::Config;
    use Shorewall::Chains;

    my ( $action, $audit ) = get_action_params( 2 );
    my $chainref           = get_action_chain;
    my ( $level, $tag )    = get_action_logging;

    fatal_error "Invalid parameter to action Multicast" if supplied $audit && $audit ne 'audit';

    my $target = require_audit ( $action , $audit );
    my $dest   = ( $family == F_IPV4 ) ? join( ' ', '-d', IPv4_MULTICAST . ' ' ) : join( ' ', '-d', IPv6_MULTICAST . ' ' );

    log_rule_limit( $level, $chainref, 'Multicast' , $action, '', $tag, 'add', $dest ) if $level ne '';
    add_jump $chainref, $target, 0, $dest;

    1;

    ?end perl;
?endif