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-rw-r--r--package/firewall/files/lib/fw.sh9
1 files changed, 9 insertions, 0 deletions
diff --git a/package/firewall/files/lib/fw.sh b/package/firewall/files/lib/fw.sh
index 3549f8aa4c..16a39b6a66 100644
--- a/package/firewall/files/lib/fw.sh
+++ b/package/firewall/files/lib/fw.sh
@@ -218,3 +218,12 @@ fw_get_family_mode() {
esac
}
+fw_get_negation() {
+ local _var="$1"
+ local _flag="$2"
+ local _ipaddr="$3"
+
+ [ "${_ipaddr#!}" != "$_ipaddr" ] && \
+ export -n -- "$_var=! $_flag ${_ipaddr#!}" || \
+ export -n -- "$_var=${_ipaddr:+$_flag $_ipaddr}"
+}