adds 5 new chains to the uci firewall that can be used to hook custom rules

[openwrt/svn-archive/archive.git] / package / firewall / files / uci_firewall.sh

diff --git a/package/firewall/files/uci_firewall.sh b/package/firewall/files/uci_firewall.sh
index 88e6976dace280f1e10603f6a019f7f8999e767c..f6e82bcb69fea3ac8992daa508e7eb6cb0492eaf 100755 (executable)
--- a/package/firewall/files/uci_firewall.sh
+++ b/package/firewall/files/uci_firewall.sh
@@ -163,6 +163,7 @@ fw_rule() {
        local dest_port
        local proto
        local target
+       local ruleset
 
        config_get src $1 src
        config_get src_ip $1 src_ip
@@ -180,6 +181,8 @@ fw_rule() {
        [ -n "$dest" ] && TARGET=zone_${dest}_$target || TARGET=$target
        [ -n "$dest_port" -a -z "$proto" ] && { \
                echo "dport may only be used it proto is defined"; return; }
+       [ -n "$src_port" -a -z "$proto" ] && { \
+               echo "sport may only be used it proto is defined"; return; }
        $IPTABLES -I $ZONE 1 \
                ${proto:+-p $proto} \
                ${src_ip:+-s $src_ip} \
@@ -210,7 +213,7 @@ fw_redirect() {
        local src_mac
        local dest_ip
        local dest_port
-       local protocol
+       local proto
        
        config_get src $1 src
        config_get src_ip $1 src_ip
@@ -219,22 +222,24 @@ fw_redirect() {
        config_get src_mac $1 src_mac
        config_get dest_ip $1 dest_ip
        config_get dest_port $1 dest_port
-       config_get protocol $1 protocol
+       config_get proto $1 proto
        [ -z "$src" -o -z "$dest_ip" ] && { \
                echo "redirect needs src and dest_ip"; return ; }
-       [ -n "$dest_port" -a -z "$protocol" ] && { \
+       [ -n "$dest_port" -a -z "$proto" ] && { \
                echo "dport may only be used it proto is defined"; return; }
+       [ -n "$src_port" -a -z "$proto" ] && { \
+               echo "sport may only be used it proto is defined"; return; }
        $IPTABLES -A zone_${src}_prerouting -t nat \
-               ${protocol:+-p $protocol} \
-               ${src_ip:+-s $srcdip} \
+               ${proto:+-p $proto} \
+               ${src_ip:+-s $src_ip} \
                ${src_port:+--sport $src_port} \
                ${src_dport:+--dport $src_dport} \
                ${src_mac:+-m mac --mac-source $src_mac} \
                -j DNAT --to-destination $dest_ip${dest_port:+:$dest_port}
        $IPTABLES -I zone_${src}_forward 1 \
-               ${protocol:+-p $protocol} \
+               ${proto:+-p $proto} \
                -d $dest_ip \
-               ${src_ip:+-s $srcdip} \
+               ${src_ip:+-s $src_ip} \
                ${src_port:+--sport $src_port} \
                ${dest_port:+--dport $dest_port} \
                ${src_mac:+-m mac --mac-source $src_mac} \
@@ -256,6 +261,19 @@ fw_addif() {
        (ACTION="ifup" INTERFACE="$1" . /etc/hotplug.d/iface/20-firewall)
 }
 
+fw_custom_chains() {
+       $IPTABLES -N input_rule
+       $IPTABLES -N output_rule
+       $IPTABLES -N forward_rule
+       $IPTABLES -N prerouting_rule -t nat
+       $IPTABLES -N postrouting_rule -t nat
+       $IPTABLES -A INPUT -j input_rule
+       $IPTABLES -A OUTPUT -j output_rule
+       $IPTABLES -A FORWARD -j forward_rule
+       $IPTABLES -A PREROUTING -t nat -j prerouting_rule
+       $IPTABLES -A POSTROUTING -t nat -j postrouting_rule
+}
+
 fw_init() {
        echo "Loading defaults"
        config_foreach fw_defaults defaults
@@ -269,7 +287,9 @@ fw_init() {
        config_foreach fw_redirect redirect
        echo "Loading includes"
        config_foreach fw_include include
-       
+       echo "Adding custom chains"
+       fw_custom_chains
+
        uci_set_state firewall core "" firewall_state 
        uci_set_state firewall core loaded 1
        unset CONFIG_APPEND