openwrt auto set tinyproxy bind when openvpn tun0 up (location: /etc/openvpn.user)

openvpn.user

#!/bin/sh
#
# This file is interpreted as shell script.
# Put your custom openvpn action here, they will
# be executed with each opevnp event.
#
# $ACTION
#      <down>    down action is generated after the TUN/TAP device is closed
#      <up>      up action is generated after the TUN/TAP device is opened
# $INSTANCE  Name of the openvpn instance which went up or down

if [[ "$ACTION" == "up" && "$2" == "tun0" ]] ; then
    uci set tinyproxy.@tinyproxy[0].Bind=$5
    uci commit tinyproxy
    service tinyproxy restart
    logger -t "openvpn($INSTANCE)" -p daemon.notice "set tinyproxy bind ip $5"
fi