iptables

net/firewall/iptables/ebtables.initd

@@ -0,0 +1,104 @@
+#!/sbin/openrc-run
+# Copyright 1999-2007 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/net-firewall/ebtables/files/ebtables.initd,v 1.2 2007/09/28 19:22:14 pva Exp $
+
+extra_commands="save reload"
+extra_started_commands="panic"
+
+ebtables_bin="/sbin/ebtables"
+ebtables_save=${EBTABLES_SAVE}
+ebtables_tables=$(grep -E '^ebtable_' /proc/modules | cut -f1 -d' ' | sed s/ebtable_//)
+if [ "$ebtables_tables" == "" ] ; then
+	ebtables_tables=${TABLE_NAMES}
+fi
+
+# Add ip netns if configured to run in a netns namespace
+if [ -n "$netns" ]; then
+	ebtables_bin="ip netns exec $netns $ebtables_bin"
+fi
+
+depend() {
+	before net
+	use logger
+}
+
+set_table_policy() {
+	local chains table=$1 policy=$2
+	case ${table} in
+		nat)    chains="PREROUTING POSTROUTING OUTPUT";;
+		broute) chains="BROUTING";;
+		filter) chains="INPUT FORWARD OUTPUT";;
+		*)      chains="";;
+	esac
+	local chain
+	for chain in ${chains} ; do
+		${ebtables_bin} -t ${table} -P ${chain} ${policy}
+	done
+}
+
+checkconfig() {
+	if [ ! -f ${ebtables_save} ] ; then
+		eerror "Not starting ebtables.  First create some rules then run:"
+		eerror "/etc/init.d/ebtables save"
+		return 1
+	fi
+	return 0
+}
+
+start() {
+	checkconfig || return 1
+	ebegin "Loading ebtables state and starting bridge firewall"
+	${ebtables_bin}-restore ${SAVE_RESTORE_OPTIONS} < "${ebtables_save}"
+	eend $?
+}
+
+stop() {
+	if [ "${SAVE_ON_STOP}" = "yes" ] ; then
+		save || return 1
+	fi
+	ebegin "Stopping bridge firewall"
+	local a
+	for a in ${ebtables_tables}; do
+		set_table_policy $a ACCEPT
+
+		${ebtables_bin} -t $a -F
+		${ebtables_bin} -t $a -X
+	done
+	eend $?
+}
+
+reload() {
+	ebegin "Flushing bridge firewall"
+	local a
+	for a in ${ebtables_tables}; do
+		${ebtables_bin} -t $a -F
+		${ebtables_bin} -t $a -X
+	done
+	eend $?
+
+	start
+}
+
+save() {
+	ebegin "Saving ebtables state"
+	checkpath -Fm 0600 "${ebtables_save}"
+	for a in ${ebtables_tables} ; do
+		${ebtables_bin}-save -t ${a} ${SAVE_RESTORE_OPTIONS} >> "${ebtables_save}"
+	done
+	eend $?
+}
+
+panic() {
+	service_started ebtables && svc_stop
+
+	local a
+	ebegin "Dropping all packets forwarded on bridges"
+	for a in ${ebtables_tables}; do
+		${ebtables_bin} -t $a -F
+		${ebtables_bin} -t $a -X
+
+		set_table_policy $a DROP
+	done
+	eend $?
+}