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-rw-r--r--package/firewall/files/lib/fw.sh17
1 files changed, 17 insertions, 0 deletions
diff --git a/package/firewall/files/lib/fw.sh b/package/firewall/files/lib/fw.sh
index 16a39b6a66..19dddef443 100644
--- a/package/firewall/files/lib/fw.sh
+++ b/package/firewall/files/lib/fw.sh
@@ -227,3 +227,20 @@ fw_get_negation() {
export -n -- "$_var=! $_flag ${_ipaddr#!}" || \
export -n -- "$_var=${_ipaddr:+$_flag $_ipaddr}"
}
+
+fw_get_subnet4() {
+ local _var="$1"
+ local _flag="$2"
+ local _name="$3"
+
+ local _ipaddr="$(uci_get_state network "${_name#!}" ipaddr)"
+ local _netmask="$(uci_get_state network "${_name#!}" netmask)"
+
+ case "$_ipaddr" in
+ *.*.*.*)
+ [ "${_name#!}" != "$_name" ] && \
+ export -n -- "$_var=! $_flag $_ipaddr/${_netmask:-255.255.255.255}" || \
+ export -n -- "$_var=$_flag $_ipaddr/${_netmask:-255.255.255.255}"
+ ;;
+ esac
+}