Toggle VPNs

toggle_vpn

#!/usr/bin/env bash

IFS=$'\n'
VPNS=($(nmcli con | grep vpn))
UUID_REGEX="^.*\(\w\{8\}.*\w\{12\}\).*$"

is_active_vpn() {
    row=$(nmcli con | grep $1 | sed 's/\s*$//g' ) # Trim whitespace so we can test ending column
    if [[ $row =~ ^.*--$ ]]; then
        echo -n 0
    else
        echo -n 1
    fi
}

toggle_vpn() {
    active=$(is_active_vpn $1)
    if [ $active = 1 ]; then
        stop_vpn $1
    else
        start_vpn $1
    fi
}

start_vpn() {
    echo "Starting VPN..."
    nmcli con up $1
}

stop_vpn() {
    echo "Stopping VPN..."
    nmcli con down $1
}


PS3='Please enter your choice: '

# allow the user to choose a vpn
select vpn in "${VPNS[@]}"
do
    # leave the loop if the user says 'stop'
    if [[ "$REPLY" == stop ]]; then break; fi

    # complain if no vpn was selected, and loop to ask again
    if [[ "$vpn" == "" ]]
    then
        echo "'$REPLY' is not a valid number"
        continue
    fi

    # toggle the vpn by uuid
    uuid=$(echo $vpn | sed -n "s/$UUID_REGEX/\1/p")
    toggle_vpn $uuid

    break
done