Establish tcp vpn connection with a random top-ranked nordvpn server.

uvpn-nord

#!/bin/bash

## uvpn ::
# Establish tcp vpn with a random top-ranked nordvpn server.

# settings:
auth="$HOME/.config/nordvpn/login.conf"

# internal control:
config=
ip=
server=
url_api='https://api.nordvpn.com/v1'
url_configs='https://downloads.nordcdn.com/configs'


## functions ::

msg() {
	printf "\e[1;38;5;12m==> \e[0;38;5;15m$1\e[0m\n" "${@:2}"
}

msg2() {
	printf "\e[1;38;5;12m -> \e[0;38;5;15m$1\e[0m\n" "${@:2}"
}

msg_error() {
	printf "\e[1;38;5;9m==> ERROR: \e[0;38;5;15m$1\e[0m\n" "${@:2}" >&2
}

status_internet() {
    ping -q -c1 -W2 google.com &>/dev/null || \
        ping -q -c1 -W2 archlinux.org &>/dev/null || \
        ping -q -c1 -W4 google.com &>/dev/null
}


## main() ::

# ERROR: openvpn not installed:
if ! command -v openvpn &>/dev/null; then
   msg_errror 'openvpn is not installed'
   exit 3
fi

# ERROR: no internet connection:
if ! status_internet; then
    msg_error 'no internet connection'
    exit 2
fi

# get server hostname:
server="$(curl --silent "$url_api/servers/recommendations?limit=20" | \
    jq --raw-output '.[].hostname' | sort -R | head -n1)"

# ERROR: unable to download server list:
if [ -z "$server" ]; then
    msg_error 'unable to download server list'
    exit 4
fi
msg "$server"

# download openvpn config:
config="$(mktemp -p /tmp "$server.XXX.opvn")"
curl -s -o "$config" "$url_configs/files/ovpn_tcp/servers/$server.tcp.ovpn"

# ERROR: unable to download server config:
ip="$(grep -Po '^remote \K[^ ]+' "$config")"
if [ -z "$ip" ]; then
    msg_error 'unable to download server config'
    exit 5
fi
msg2 "$ip"

# add auth-user-pass to config:
if [ -f "$auth" ]; then
    sed -i "s|^auth-user-pass.*|auth-user-pass $auth|" "$config"
fi

# launch openvpn:
sudo openvpn "$config"

# cleanup:
rm -f "$config"