Control openVPN client

openvpn.sh

#!/bin/bash
# https://www.aandcp.com/launchdaemons-and-mac-os-x-openvpn-as-an-example

### FURTHER TUNNELING ############################
# You can enable unreachable URLs by
# Pick the host from the URI you can't reach and find its IPs by running, e.g.
# dig vw-bellhop.test.bussys.trimble.com +noall +answer
# Then followed by for each IP address, add the route
# sudo route add 44.236.79.253/32 -interface utun0
#
# To see all your routes run:
# netstat -rn | grep utun0
#
# To delete a route, run, e.g.
# sudo route delete 45.63.3.250/32
##################################################


SWITCH="unload"

#Print acceptable params
helpme() {
    echo
    echo "`basename $0` help page"
    echo "A parameter can be:...[on|ON|start|load] | [off|OFF|stop|unload] | status"
    echo "-------------------------------------------------------------------------"
    echo "Example calls:"
    echo -e "`basename $0` off\n`basename $0` ON\n`basename $0` status"
    echo
    echo "Turning ON | OFF the Open VPN client requires elevated privileges."
    exit 1
} #helpme()

getStatus() {
    echo "Determining if Open VPN client is running...."
    pgrep -l openvpn
    if [ $? -eq 0 ]; then
        echo -e "\nOpen VPN client is most likely running... Checking further..."
        if [ `ifconfig | grep "inet " | wc -l` == 3 ]; then
            echo "Service already loaded:"
        else
            echo "Service is not running:"
        fi
    else
        echo "Service is not running:"
    fi
    ifconfig | grep "inet "
    echo -e "\nRouting tables for the VPN interface:\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
    netstat -rn | grep utun0
    exit 0
}

#Parse various arguments
parse_args() {
    echo "#########################################################################"
    echo "############################### `basename $0` ##############################"
    echo "#########################################################################"
    case "$1" in
            on|ON|start|load)
                SWITCH=load ;;
            off|OFF|stop|unload)
                SWITCH=unload ;;
            status)
                getStatus ;;
            -h|--help|-?|/?|/h)
                helpme ;;
            *)
                echo -e "Invalid argument.\nPrinting HELP information:"; helpme ;;
    esac
    echo "ARG PARSING DONE."
} #parse_args()

[[ -z $1 ]] && helpme
parse_args $@

sudo -S launchctl $SWITCH /opt/local/openvpn/LaunchDaemons/com.trimblecorp.openvpn.plist

echo "SERVICE has been successfully: "$SWITCH"ed!"