[package] firewall: fix serious bug in state var handling (#9746)

[openwrt.git] / package / firewall / files / lib / core_interface.sh

diff --git a/package/firewall/files/lib/core_interface.sh b/package/firewall/files/lib/core_interface.sh
index 69ddc34..84e07e0 100644 (file)
--- a/package/firewall/files/lib/core_interface.sh
+++ b/package/firewall/files/lib/core_interface.sh
@@ -1,4 +1,35 @@
-# Copyright (C) 2009-2010 OpenWrt.org
+# Copyright (C) 2009-2011 OpenWrt.org
+
+fw__uci_state_add() {
+       local var="$1"
+       local item="$2"
+
+       local val="$(uci_get_state firewall core $var)"
+       local e1; for e1 in $item; do
+               local e2; for e2 in $val; do
+                       [ "$e1" = "$e2" ] && e1=""
+               done
+               val="${val:+$val${e1:+ }}$e1"
+       done
+
+       uci_toggle_state firewall core $var "$val"
+}
+
+fw__uci_state_del() {
+       local var="$1"
+       local item="$2"
+
+       local rest=""
+       local val="$(uci_get_state firewall core $var)"
+       local e1; for e1 in $val; do
+               local e2; for e2 in $item; do
+                       [ "$e1" = "$e2" ] && e1=""
+               done
+               rest="${rest:+$rest${e1:+ }}$e1"
+       done
+
+       uci_toggle_state firewall core $var "$val"
+}
 
 fw_configure_interface() {
        local iface=$1
@@ -12,8 +43,9 @@ fw_configure_interface() {
        }
 
        [ -n "$ifname" ] || {
-               ifname=$(uci_get_state network "$iface" ifname "$iface")
+               ifname=$(uci_get_state network "$iface" ifname)
                ifname="${ifname%%:*}"
+               [ -z "$ifname" ] && return 0
        }
 
        [ "$ifname" == "lo" ] && return 0
@@ -27,8 +59,8 @@ fw_configure_interface() {
                local ifname=$3
                local subnet=$4
 
-               local inet onet
-               local mode=$(fw_get_family_mode x $zone i)
+               local inet onet mode
+               fw_get_family_mode mode x $zone i
 
                case "$mode/$subnet" in
                        # Zone supports v6 only or dual, need v6
@@ -50,8 +82,13 @@ fw_configure_interface() {
 
                        # Need v4 while zone is v6
                        */*.*) fw_log info "zone $zone does not support IPv4 address family, skipping"; return ;;
+
+                       # Strip prefix
+                       *) mode="${mode#G}" ;;
                esac
 
+               lock /var/run/firewall-interface.lock
+
                fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -o "$ifname" $onet }
                fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -i "$ifname" $inet }
                fw $action $mode f ${chain}_DROP   DROP   $ { -o "$ifname" $onet }
@@ -59,13 +96,15 @@ fw_configure_interface() {
                fw $action $mode f ${chain}_REJECT reject $ { -o "$ifname" $onet }
                fw $action $mode f ${chain}_REJECT reject $ { -i "$ifname" $inet }
 
-               fw $action $mode n ${chain}_nat MASQUERADE $ { -o "$ifname" $onet }
                fw $action $mode f ${chain}_MSSFIX TCPMSS  $ { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu $onet }
 
                fw $action $mode f input   ${chain}         $ { -i "$ifname" $inet }
                fw $action $mode f forward ${chain}_forward $ { -i "$ifname" $inet }
                fw $action $mode n PREROUTING ${chain}_prerouting $ { -i "$ifname" $inet }
                fw $action $mode r PREROUTING ${chain}_notrack    $ { -i "$ifname" $inet }
+               fw $action $mode n POSTROUTING ${chain}_nat       $ { -o "$ifname" $onet }
+
+               lock -u /var/run/firewall-interface.lock
        }
 
        local old_zones old_ifname old_subnets
@@ -82,7 +121,10 @@ fw_configure_interface() {
                                fw__do_rules del $z $old_ifname $n
                        done
 
-                       [ -n "$old_subnets" ] || ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+                       [ -n "$old_subnets" ] || {
+                               fw__uci_state_del "${z}_networks" "$iface"
+                               env -i ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+                       }
                done
 
                local old_aliases
@@ -119,14 +161,14 @@ fw_configure_interface() {
                fw_sysctl_interface $ifname
                fw_callback post interface
 
-               uci_set_state firewall core "${iface}_aliases" "$aliases"
+               uci_toggle_state firewall core "${iface}_aliases" "$aliases"
        } || {
                local subnets=
                config_get subnets core "${iface}_subnets"
                append subnets "$aliasnet"
 
                config_set core "${iface}_subnets" "$subnets"
-               uci_set_state firewall core "${iface}_subnets" "$subnets"
+               uci_toggle_state firewall core "${iface}_subnets" "$subnets"
        }
 
        local new_zones=
@@ -135,15 +177,18 @@ fw_configure_interface() {
                list_contains zone_network "$iface" || return
 
                fw_log info "adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name"
-               fw__do_rules add ${zone_name} "$ifname" $aliasnet
+               fw__do_rules add ${zone_name} "$ifname" "$aliasnet"
                append new_zones $zone_name
 
-               [ -n "$aliasnet" ] || ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+               [ -n "$aliasnet" ] || {
+                       fw__uci_state_add "${zone_name}_networks" "${zone_network}"
+                       env -i ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+               }
        }
        config_foreach load_zone zone
 
-       uci_set_state firewall core "${iface}_zone" "$new_zones"
-       uci_set_state firewall core "${iface}_ifname" "$ifname"
+       uci_toggle_state firewall core "${iface}_zone" "$new_zones"
+       uci_toggle_state firewall core "${iface}_ifname" "$ifname"
 }
 
 fw_sysctl_interface() {