From 6b2e482b317dd94119a2a8f0b101ebd4c1c07753 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Wed, 9 Dec 2009 14:04:37 +0000
Subject: [PATCH] firewall: get rid of recursive shell script inclusion to
 improve hush compatibility

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18716 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/firewall/files/20-firewall     | 33 +----------------
 package/firewall/files/uci_firewall.sh | 50 +++++++++++++++++++++++---
 2 files changed, 46 insertions(+), 37 deletions(-)

diff --git a/package/firewall/files/20-firewall b/package/firewall/files/20-firewall
index 1cfc1b9c0..4b89326b5 100644
--- a/package/firewall/files/20-firewall
+++ b/package/firewall/files/20-firewall
@@ -2,35 +2,4 @@
 unset ZONE
 config_get ifname $INTERFACE ifname
 [ "$ifname" == "lo" ] && exit 0
-
-load_zones() {
-	local name
-	local network
-	config_get name $1 name
-	config_get network $1 network
-	[ -z "$network" ] && network=$name 
-	for n in $network; do
-		[ "$n" = "$INTERFACE" ] && ZONE="$ZONE $name"
-	done
-}
-
-config_foreach load_zones zone
-
-[ -z "$ZONE" ] && exit 0
-
-[ ifup = "$ACTION" ] && {
-	for z in $ZONE; do 
-		local loaded
-		config_get loaded core loaded
-		[ -n "$loaded" ] && addif "$INTERFACE" "$ifname" "$z"
-	done
-}
-
-[ ifdown = "$ACTION" ] && {
-	local up
-	config_get up "$INTERFACE" up
-
-	for z in $ZONE; do 
-		[ "$up" == "1" ] && delif "$INTERFACE" "$ifname" "$z"
-	done
-}
+fw_event "$ACTION" "$INTERFACE"
diff --git a/package/firewall/files/uci_firewall.sh b/package/firewall/files/uci_firewall.sh
index 478b95c93..21485cb5d 100755
--- a/package/firewall/files/uci_firewall.sh
+++ b/package/firewall/files/uci_firewall.sh
@@ -402,13 +402,52 @@ fw_include() {
 	[ -e $path ] && . $path
 }
 
+get_interface_zones() {
+	local interface="$2"
+	local name
+	local network
+	config_get name $1 name
+	config_get network $1 network
+	[ -z "$network" ] && network=$name 
+	for n in $network; do
+		[ "$n" = "$interface" ] && append add_zone "$name"
+	done
+}
+
+fw_event() {
+	local action="$1"
+	local interface="$2"
+	local ifname="$(sh -c ". /etc/functions.sh; config_load network; config_get "$interface" ifname")"
+	local up
+
+	[ -z "$ifname" ] && return 0
+	config_foreach get_interface_zones zone "$interface"
+	[ -z "$add_zone" ] && return 0
+
+	case "$action" in
+		ifup)
+			for z in $add_zone; do 
+				local loaded
+				config_get loaded core loaded
+				[ -n "$loaded" ] && addif "$interface" "$ifname" "$z"
+			done
+		;;
+		ifdown)
+			config_get up "$interface" up
+
+			for z in $ZONE; do 
+				[ "$up" == "1" ] && delif "$interface" "$ifname" "$z"
+			done
+		;;
+	esac
+}
+
 fw_addif() {
 	local up
 	local ifname
 	config_get up $1 up
-	config_get ifname $1 ifname
 	[ -n "$up" ] || return 0
-	(ACTION="ifup" INTERFACE="$1" . /etc/hotplug.d/iface/20-firewall)
+	fw_event ifup "$1"
 }
 
 fw_custom_chains() {
@@ -465,9 +504,10 @@ fw_init() {
 	config_foreach fw_zone_defaults zone
 	uci_set_state firewall core loaded 1
 	config_foreach fw_check_notrack zone
-	unset CONFIG_APPEND
-	config_load network
-	config_foreach fw_addif interface
+	INTERFACES="$(sh -c '. /etc/functions.sh; config_load network; config_foreach echo interface')"
+	for interface in $INTERFACES; do
+		fw_addif "$interface"
+	done
 }
 
 fw_stop() {
-- 
2.35.1