[package] firewall: process custom rules after forwardings and redirects, this actual...

[openwrt.git] / package / firewall / files / uci_firewall.sh

diff --git a/package/firewall/files/uci_firewall.sh b/package/firewall/files/uci_firewall.sh
index 579a8a6..c197003 100755 (executable)
--- a/package/firewall/files/uci_firewall.sh
+++ b/package/firewall/files/uci_firewall.sh
@@ -55,39 +55,56 @@ create_zone() {
 }
 
 addif() {
-       local dev
-       config_get dev core $2
-       [ -n "$dev" -a "$dev" != "$1" ] && delif "$dev" "$2"
-       [ -n "$dev" -a "$dev" == "$1" ] && return
-       logger "adding $1 to firewall zone $2"
-       $IPTABLES -A input -i $1 -j zone_$2
-       $IPTABLES -I zone_$2_MSSFIX 1 -o $1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
-       $IPTABLES -I zone_$2_ACCEPT 1 -o $1 -j ACCEPT
-       $IPTABLES -I zone_$2_DROP 1 -o $1 -j DROP
-       $IPTABLES -I zone_$2_REJECT 1 -o $1 -j reject
-       $IPTABLES -I zone_$2_ACCEPT 1 -i $1 -j ACCEPT
-       $IPTABLES -I zone_$2_DROP 1 -i $1 -j DROP
-       $IPTABLES -I zone_$2_REJECT 1 -i $1 -j reject
-       $IPTABLES -I zone_$2_nat 1 -t nat -o $1 -j MASQUERADE 
-       $IPTABLES -I PREROUTING 1 -t nat -i $1 -j zone_$2_prerouting 
-       $IPTABLES -A forward -i $1 -j zone_$2_forward
-       uci_set_state firewall core "$2" "$1"
+       local network="$1"
+       local ifname="$2"
+       local zone="$3"
+
+       local n_if n_zone
+       config_get n_if core "${network}_ifname"
+       config_get n_zone core "${network}_zone"
+       [ -n "$n_zone" ] && {
+               if [ "$n_zone" != "$zone" ]; then
+                       delif "$network" "$n_if" "$n_zone"
+               else
+                       return
+               fi
+       }
+
+       logger "adding $network ($ifname) to firewall zone $zone"
+       $IPTABLES -A input -i "$ifname" -j zone_${zone}
+       $IPTABLES -I zone_${zone}_MSSFIX 1 -o "$ifname" -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
+       $IPTABLES -I zone_${zone}_ACCEPT 1 -o "$ifname" -j ACCEPT
+       $IPTABLES -I zone_${zone}_DROP 1 -o "$ifname" -j DROP
+       $IPTABLES -I zone_${zone}_REJECT 1 -o "$ifname" -j reject
+       $IPTABLES -I zone_${zone}_ACCEPT 1 -i "$ifname" -j ACCEPT
+       $IPTABLES -I zone_${zone}_DROP 1 -i "$ifname" -j DROP
+       $IPTABLES -I zone_${zone}_REJECT 1 -i "$ifname" -j reject
+       $IPTABLES -I zone_${zone}_nat 1 -t nat -o "$ifname" -j MASQUERADE 
+       $IPTABLES -I PREROUTING 1 -t nat -i "$ifname" -j zone_${zone}_prerouting 
+       $IPTABLES -A forward -i "$ifname" -j zone_${zone}_forward
+       uci_set_state firewall core "${network}_ifname" "$ifname"
+       uci_set_state firewall core "${network}_zone" "$zone"
 }
 
 delif() {
-       logger "removing $1 from firewall zone $2"
-       $IPTABLES -D input -i $1 -j zone_$2
-       $IPTABLES -D zone_$2_MSSFIX -o $1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
-       $IPTABLES -D zone_$2_ACCEPT -o $1 -j ACCEPT
-       $IPTABLES -D zone_$2_DROP -o $1 -j DROP
-       $IPTABLES -D zone_$2_REJECT -o $1 -j reject
-       $IPTABLES -D zone_$2_ACCEPT -i $1 -j ACCEPT
-       $IPTABLES -D zone_$2_DROP -i $1 -j DROP
-       $IPTABLES -D zone_$2_REJECT -i $1 -j reject
-       $IPTABLES -D zone_$2_nat -t nat -o $1 -j MASQUERADE 
-       $IPTABLES -D PREROUTING -t nat -i $1 -j zone_$2_prerouting 
-       $IPTABLES -D forward -i $1 -j zone_$2_forward
-       uci_revert_state firewall core "$2"
+       local network="$1"
+       local ifname="$2"
+       local zone="$3"
+
+       logger "removing $network ($ifname) from firewall zone $zone"
+       $IPTABLES -D input -i "$ifname" -j zone_$zone
+       $IPTABLES -D zone_${zone}_MSSFIX -o "$ifname" -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
+       $IPTABLES -D zone_${zone}_ACCEPT -o "$ifname" -j ACCEPT
+       $IPTABLES -D zone_${zone}_DROP -o "$ifname" -j DROP
+       $IPTABLES -D zone_${zone}_REJECT -o "$ifname" -j reject
+       $IPTABLES -D zone_${zone}_ACCEPT -i "$ifname" -j ACCEPT
+       $IPTABLES -D zone_${zone}_DROP -i "$ifname" -j DROP
+       $IPTABLES -D zone_${zone}_REJECT -i "$ifname" -j reject
+       $IPTABLES -D zone_${zone}_nat -t nat -o "$ifname" -j MASQUERADE 
+       $IPTABLES -D PREROUTING -t nat -i "$ifname" -j zone_${zone}_prerouting 
+       $IPTABLES -D forward -i "$ifname" -j zone_${zone}_forward
+       uci_revert_state firewall core "${network}_ifname"
+       uci_revert_state firewall core "${network}_zone"
 }
 
 load_synflood() {
@@ -137,21 +154,22 @@ fw_defaults() {
        $IPTABLES -P FORWARD DROP
 
        $IPTABLES -F
-       $IPTABLES -t mangle -F
        $IPTABLES -t nat -F
-       $IPTABLES -t mangle -X
        $IPTABLES -t nat -X
        $IPTABLES -X
-       
-       $IPTABLES -A INPUT -m state --state INVALID -j DROP
+
+       config_get_bool drop_invalid $1 drop_invalid 1
+
+       [ "$drop_invalid" -gt 0 ] && {
+               $IPTABLES -A INPUT -m state --state INVALID -j DROP
+               $IPTABLES -A OUTPUT -m state --state INVALID -j DROP
+               $IPTABLES -A FORWARD -m state --state INVALID -j DROP
+       }
+
        $IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-               
-       $IPTABLES -A OUTPUT -m state --state INVALID -j DROP
        $IPTABLES -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-       
-       $IPTABLES -A FORWARD -m state --state INVALID -j DROP
        $IPTABLES -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-       
+
        $IPTABLES -A INPUT -i lo -j ACCEPT
        $IPTABLES -A OUTPUT -o lo -j ACCEPT
 
@@ -383,12 +401,12 @@ fw_init() {
        config_foreach fw_defaults defaults
        echo "Loading zones"
        config_foreach fw_zone zone
-       echo "Loading rules"
-       config_foreach fw_rule rule
        echo "Loading forwarding"
        config_foreach fw_forwarding forwarding
        echo "Loading redirects"
        config_foreach fw_redirect redirect
+       echo "Loading rules"
+       config_foreach fw_rule rule
        echo "Loading includes"
        config_foreach fw_include include
        uci_set_state firewall core loaded 1
@@ -399,9 +417,7 @@ fw_init() {
 
 fw_stop() {
        $IPTABLES -F
-       $IPTABLES -t mangle -F
        $IPTABLES -t nat -F
-       $IPTABLES -t mangle -X
        $IPTABLES -t nat -X
        $IPTABLES -X
        $IPTABLES -P INPUT ACCEPT