Add Established action.

Signed-off-by: Tom Eastep <teastep@shorewall.net>

Shorewall/action.Established

@@ -0,0 +1,79 @@
+#
+# Shorewall 4 - Established Action
+#
+#    /usr/share/shorewall/action.Established
+#
+#     This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
+#
+#     (c) 2011,2012 - 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.
+#
+#   Established[([<action>])]
+#
+#       Default action is DROP
+#
+##########################################################################################
+?FORMAT 2
+
+DEFAULTS DROP,-
+
+?BEGIN PERL;
+
+use Shorewall::IPAddrs;
+use Shorewall::Config;
+use Shorewall::Chains;
+use Shorewall::Rules qw( process_rule1 );
+
+my ( $action, $audit ) = get_action_params( 2 );
+
+if ( supplied $audit ) {
+     fatal_error "Established parameter ($audit) to action Established" if $audit ne 'audit';
+     $action = "A_$action";
+}    
+
+my ( $level, $tag ) = get_action_logging;
+
+$action = join( ':', $action, $level, $tag ) if "${level}${tag}";
+
+my $chainref = get_action_chain;
+
+process_rule1( $chainref,                           # Chainref
+	       "$globals{STATEMATCH} ESTABLISHED ", # Rule
+	       $action,                             # Target
+	       '',                                  # Current Param
+	       '-',                                 # Source
+	       '-',                                 # Dest
+	       '-',                                 # Proto
+	       '-',                                 # Port(s)
+	       '-',                                 # Source Port(s)
+	       '-',                                 # Original Dest
+	       '-',                                 # Rate Limit
+	       '-',                                 # User
+	       '-',                                 # Mark
+	       '-',                                 # Connlimit
+	       '-',                                 # Time
+	       '-',                                 # Headers,
+	       '-',                                 # condition,
+	       '-',                                 # helper,
+	       0,                                   # Wildcard
+);
+
+allow_optimize( $chainref );
+
+1;
+
+?END PERL;

Shorewall/actions.std

@@ -38,6 +38,7 @@ A_Reject	                # Audited Default action for REJECT policy
 Broadcast   noinline            # Handles Broadcast/Multicast/Anycast
 Drop		                # Default Action for DROP policy
 DropSmurfs  noinline            # Drop smurf packets
+Established nolinline		# Handles packets in the ESTABLISHED state
 Invalid     noinline            # Handles packets in the INVALID conntrack state
 NotSyn      noinline            # Handles TCP packets which do not have SYN=1 and ACK=0
 Reject                          # Default Action for REJECT policy

Shorewall6/actions.std

@@ -26,6 +26,7 @@ AllowICMPs   	                # Accept needed ICMP6 types
 Broadcast   noinline      	# Handles Broadcast/Multicast/Anycast
 Drop		        	# Default Action for DROP policy
 DropSmurfs  noinline     	# Handles packets with a broadcast source address
+Established nolinline		# Handles packets in the ESTABLISHED state
 Invalid	    noinline		# Handles packets in the INVALID conntrack state
 NotSyn	    noinline 		# Handles TCP packets that do not have SYN=1 and ACK=0
 Reject		        	# Default Action for REJECT policy