#!/bin/sh

lock="/tmp/rotlock"

[[ -e $lock ]] || echo "unlocked" > "$lock"

status=$(<$lock)

if [ $BLOCK_BUTTON -gt 0 ]; then
    case $status in
        "unlocked") status="locked" ;;
        "locked") status="unlocked";;
    esac
    echo $status > "$lock"
fi

case $status in
    "locked") echo "";;
    "unlocked") echo "";;
esac