#!/bin/bash

##########################################################################
#
#  discript:   openvpn self-start script
#  user:       Romix
#
##########################################################################
CFG_FILE="/etc/openvpn/client.conf"
LOG_FILE="/tmp/openvpn.log"

check_run(){

    PID=`ps -ef|grep 'openvpn --config'|grep -v grep|awk '{print $2}'`

    if [ -z "${PID}" ] ;then
        return 0
    else
        return 1
    fi
}

do_start(){

    check_run

    if [ $? = "1" ];then
        echo -e "\033[31m The openvpn daemon is running...\033[0m"
    else
        openvpn --config $CFG_FILE --daemon

        sleep 1

        echo -e "\033[32m openvpn demon do start\033[0m"
    fi
}

do_stop(){

    for i in `ps -ef|grep 'openvpn --config'|grep -v grep|awk '{print $2}'`;do
        kill -9 $i
    done

    echo -e "\033[31m openvpn demon do stop\033[0m"

}


guard_run(){
    while true
    do
        sleep 30

        check_run

        if [ $? = "1" ]; then
            echo -e "\033[32m openvpn is started.\033[0m"
        else
            echo -e "\033[32m openvpn is stop.\033[0m"
            do_start
        fi

    done
}

case "$1" in
start)
        echo -e "\033[32m Radar System vpn network start...\033[0m"
do_start
        guard_run
        exit 0
;;
    restart|reload|force-reload)
        echo -e "\033[32m Radar System vpn network restart...\033[0m"
        do_stop

        sleep 1

        do_start

        guard_run
        exit 0
        ;;
    stop)
        echo -e "\033[31m Radar System vpn network stop...\033[0m"
        do_stop
        exit 0
        ;;
    *)
        echo -e "\033[31m Usage: $0 start|stop|restart\033[0m" >&2
        exit 3
        ;;
esac