From 114aa8d1119568feeccfb669dd22ceaf17d696e8 Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jow@openwrt.org>
Date: Fri, 20 Feb 2009 00:38:37 +0000
Subject: [PATCH] applications/luci-splash: firewall fixes

---
 .../luci-splash/root/etc/init.d/luci_splash   | 27 +++++++++++++------
 modules/freifunk/root/etc/firewall.freifunk   |  6 +++++
 2 files changed, 25 insertions(+), 8 deletions(-)

diff --git a/applications/luci-splash/root/etc/init.d/luci_splash b/applications/luci-splash/root/etc/init.d/luci_splash
index 85ea8ecaaf..1d6e98814c 100755
--- a/applications/luci-splash/root/etc/init.d/luci_splash
+++ b/applications/luci-splash/root/etc/init.d/luci_splash
@@ -17,10 +17,11 @@ iface_add() {
 	[ -n "$netmask" ] || return 0
 	
 	eval "$(ipcalc.sh $ipaddr $netmask)"
-	
-	iptables -t nat -A zone_${zone}_prerouting -s "$NETWORK/$PREFIX" -p ! tcp -j luci_splash_portal
-	iptables -t nat -A zone_${zone}_prerouting -s "$NETWORK/$PREFIX" -d ! "$ipaddr" -j luci_splash_portal
-	iptables -t nat -A zone_${zone}_prerouting -s "$NETWORK/$PREFIX" -d "$ipaddr" -p tcp -m multiport ! --dport 22,80,443 -j luci_splash_portal
+
+	iptables -t nat -A prerouting_${zone} -j luci_splash_prerouting
+	iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -p ! tcp -j luci_splash_portal
+	iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -d ! "$ipaddr" -j luci_splash_portal
+	iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -d "$ipaddr" -p tcp -m multiport ! --dport 22,80,443 -j luci_splash_portal
 }
 
 blacklist_add() {
@@ -44,9 +45,9 @@ start() {
 	config_load luci_splash
 	
 	### Create subchains
-	iptables -t nat -N luci_splash
 	iptables -t nat -N luci_splash_portal
 	iptables -t nat -N luci_splash_leases
+	iptables -t nat -N luci_splash_prerouting
 	
 	### Build the main and portal rule
 	config_foreach blacklist_add blacklist
@@ -70,16 +71,26 @@ start() {
 	start-stop-daemon -S -b -q -x /usr/bin/luci-splashd
 }
 
-stop() {	
+iface_del() {
+	config_get zone "$1" zone                                                                
+	[ -n "$zone" ] || return 0
+	iptables -t nat -D prerouting_${zone} -j luci_splash_prerouting
+}
+
+stop() {
+	### Clear interface rules
+	config_load luci_splash
+	config_foreach iface_del iface
+        
 	### Clear subchains
 	iptables -t nat -F luci_splash_leases
 	iptables -t nat -F luci_splash_portal
-	iptables -t nat -F luci_splash	
+	iptables -t nat -F luci_splash_prerouting
 	
 	### Delete subchains
 	iptables -t nat -X luci_splash_leases
 	iptables -t nat -X luci_splash_portal
-	iptables -t nat -X luci_splash
+	iptables -t nat -X luci_splash_prerouting
 
 	### Stop the splash httpd
 	start-stop-daemon -K -q -x /usr/bin/luci-splashd
diff --git a/modules/freifunk/root/etc/firewall.freifunk b/modules/freifunk/root/etc/firewall.freifunk
index 663fc615aa..c70ac3a2ac 100644
--- a/modules/freifunk/root/etc/firewall.freifunk
+++ b/modules/freifunk/root/etc/firewall.freifunk
@@ -13,6 +13,8 @@ apply_advanced() {
 	local accept_source_route
 
 	config_get_bool tcp_ecn $1 tcp_ecn 1
+	config_get ip_conntrack_max $1 ip_conntrack_max
+	config_get_bool tcp_westwood $1 tcp_westwood 0
 	config_get_bool tcp_window_scaling $1 tcp_window_scaling 1
 	config_get_bool accept_redirects $1 accept_redirects 0
 	config_get_bool accept_source_route $1 accept_source_route 0
@@ -24,6 +26,8 @@ apply_advanced() {
 
 	sysctl -w net.ipv4.tcp_ecn=$tcp_ecn >/dev/null
 	sysctl -w net.ipv4.tcp_window_scaling=$tcp_window_scaling >/dev/null
+	sysctl -w net.ipv4.tcp_westwood=$tcp_westwood >/dev/null
+	sysctl -w net.ipv4.ip_conntrack_max=$ip_conntrack_max >/dev/null
 
 	for f in /proc/sys/net/ipv4/conf/*/accept_redirects; do
 		echo $accept_redirects > $f
@@ -51,3 +55,5 @@ apply_nat_fix() {
 uci_set_state firewall core loaded 1
 config_foreach fw_addif interface
 config_foreach apply_nat_fix interface
+
+[ -x /etc/init.d/luci_splash ] && /etc/init.d/luci_splash start
-- 
2.30.2