Connect / Disconnect from Wireguard Client on GL MT1300 travel router.

wireguard.sh

#!/usr/bin/env sh

function usage() {
  cat << EOF
Usage: $0 [options...]
This script allows for easy access to connect or disconnect the wireguard vpn client.

Options:
  -h  show the help and exit
  -u  wireguard Up
  -d  wireguard Down
  -t  wireguard toggle
  -s  display wireguard status
EOF
}

function parse_args() {
    while getopts ":hudts" OPT; do
        case $OPT in
            h)
                usage
                exit 0
                ;;
            u)
                MODE="1"
                ;;
            d)
                MODE="0"
                ;;
            t)
                if [ $(uci get wireguard.@proxy[0].enable) -ne 1 ]; then
                    MODE="1"
                else
                    MODE="0"
                fi
                ;;
            s)
                if [ $(uci get wireguard.@proxy[0].enable) -ne 1 ]; then
                    echo "Status: Down"
                else
                    echo "Status: Up"
                fi
                exit 0
                ;;
            \?)
                echo "Invalid option: -$OPTARG" >&2
                echo ""
                usage
                exit 1
                ;;
        esac
    done
}

function wireguard_enable() {
    local _ENABLE=${1:-1}

    if [ $_ENABLE -eq 1 ]; then
        if [ $(uci get wireguard.@proxy[0].enable) -ne 1 ]; then
            echo "Connecting to VPN..."
            uci set wireguard.@proxy[0].enable='1'
            uci commit
            /etc/init.d/wireguard reload >/dev/null 2>&1
        fi
    else
        echo "Disconnecting from VPN..."
        uci set wireguard.@proxy[0].enable='0'
        uci commit
        /etc/init.d/wireguard reload >/dev/null 2>&1
    fi
}

if [ $(uci get wireguard.@proxy[0].enable) -ne 1 ]; then
    MODE="1"
else
    MODE="0"
fi

parse_args $@

wireguard_enable $MODE