#!/bin/sh

# Copyright (C) 2022-2024 Thien Tran
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

set -eu -o pipefail

unpriv(){
  sudo -u nobody "${@}"
}

download() {
  unpriv curl -s --proxy http://127.0.0.1:8082 "${1}" | sudo tee "${2}" > /dev/null
}

sudo dnf config-manager --add-repo https://repository.mullvad.net/rpm/stable/mullvad.repo
sudo dnf install -y mullvad-vpn

umask 022

sudo mkdir -p /etc/qubes-bind-dirs.d
echo 'binds+=( '\'''/etc/mullvad-vpn''\'' )' | sudo tee /etc/qubes-bind-dirs.d/50_user.conf 

sudo mkdir -p /etc/systemd/system/systemd-resolved.service.d
download https://raw.githubusercontent.com/TommyTran732/QubesOS-Scripts/main/etc/systemd/system/systemd-resolved.service.d/override.conf /etc/systemd/system/systemd-resolved.service.d/override.conf

download https://raw.githubusercontent.com/TommyTran732/QubesOS-Scripts/main/etc/systemd/system/dnat-to-ns.service /etc/systemd/system/dnat-to-ns.service
download https://raw.githubusercontent.com/TommyTran732/QubesOS-Scripts/main/etc/systemd/system/dnat-to-ns.path /etc/systemd/system/dnat-to-ns.path

sudo systemctl enable dnat-to-ns.path

# Follow these instructions on how to set up the ProxyVM: https://privsec.dev/posts/qubes/using-mullvad-vpn-on-qubes-os/#creating-the-proxyvm