Donwload, verify and run NymVPN desktop alpha binary

nym-vpn-desktop-install-run.sh

#!/bin/bash

# this is an edited version of a script called nym-vpn-install-run.sh by @tommy1987
# link to the original script https://gist.github.com/tommyv1987/7d210d4daa8f7abc61f9a696d0321f19

echo "welcome to the NYM client installation"
echo "disclaimer: macOS arch version is only available post 0.0.4"

version="0.0.4"
mac_file="nym-vpn-desktop_${version}_macos_x86_64"
linux_file="nym-vpn-desktop_${version}_ubuntu-22.04_x86_64"
mac_arch_file="nym-vpn-desktop_${version}_macos_aarch64"
sandbox_env_url="https://raw.githubusercontent.com/nymtech/nym/develop/envs/sandbox.env"
download_page="https://github.com/nymtech/nym/releases/tag/nym-vpn-alpha-${version}"
nym_vpn_dir="${HOME}/nym-vpn-latest"
machine=$(uname -s)

# not sure if this is needed let's see...
# this is more from a dev perspective given the pre-reqs by https://tauri.app/v1/guides/getting-started/prerequisites/
check_and_install_packages() {
    for pkg in build-essential libssl-dev libayatana-appindicator3-dev libgtk-3-dev librsvg2-dev librsvg2-dev libwebkit2gtk-4.0-dev; do
        if ! dpkg -l | grep -qw $pkg; then
            apt --fix-broken install #just in case something isn't correct
            echo "installing missing package: $pkg"
            sudo apt-get install -y $pkg
        else
            echo "package $pkg is already installed."
        fi
    done
}

case "$machine" in
Darwin*)
    arch=$(uname -m)
    case "$arch" in
    x86_64)
        file=$mac_file
        ;;
    arm64)
        file=$mac_arch_file
        ;;
    *)
        echo "unsupported macOS architecture: $arch"
        exit 1
        ;;
    esac
    ;;
Linux*)
    file=$linux_file
    check_and_install_packages
    ;;
*)
    echo "invalid platform. This script supports Mac and Linux only."
    exit 1
    ;;
esac

download="https://github.com/nymtech/nym/releases/download/nym-vpn-alpha-${version}/${file}.tar.gz"

if [ -d "$nym_vpn_dir" ]; then
    echo "deleting existing directory $nym_vpn_dir..."
    rm -rf "$nym_vpn_dir"
fi

echo "creating $nym_vpn_dir directory..."
mkdir -p "$nym_vpn_dir"

cd "$nym_vpn_dir"

echo "downloading $file.tar.gz..."
curl -LO "$download"

echo "extracting $file.tar.gz..."
tar -xvf "$file.tar.gz"

read -p "do you want to verify the checksum? [y/N]: " verify_checksum

if [[ $verify_checksum == [yY] ]]; then
    echo "please enter the full text for example: '2e0b33c1468a7453745f9a3325989399ba216972689b6a76348a1c6759a5e7e6' for your ${file}.tar.gz"
    read -p "what is the checksum presented on the downloads page for the tar.gz file: ${download_page}?  " checksum

    if command -v sha256sum &>/dev/null; then
        calculated_checksum=$(sha256sum "$file.tar.gz" | awk '{print $1}')
    elif command -v shasum &>/dev/null; then
        calculated_checksum=$(shasum -a 256 "$file.tar.gz" | awk '{print $1}')
    else
        echo "checksum tool not found. unable to verify the checksum. 🤔 "
        exit 1
    fi
    if [ "$calculated_checksum" == "$checksum" ]; then
        echo "checksum verified. download is valid."
    else
        echo "checksum does not match. the binary may be corrupted or tampered with - contact a nym member"
        exit 1
    fi
else
    echo "skipping checksum verification..."
fi

echo "to run the vpn, we have to mount the dmg then move it to Applications"
echo "🏎 🛠 - time to mount - 🏎 🛠 "

if [ "$machine" == "Darwin" ]; then
    echo "running on macOS"
    app_name="nym-vpn.app"
    dmg_path="${nym_vpn_dir}/${file}/${file}.dmg"

    mount_point="/tmp/nym-vpn-mount"
    mkdir -p "$mount_point"

    echo "mounting .dmg file..."
    hdiutil attach -mountpoint "$mount_point" "$dmg_path"

    echo "copying ${app_name} to /Applications..."
    cp -R "$mount_point/$app_name" /Applications/

    echo "unmounting .dmg file..."
    if ! hdiutil detach "$mount_point"; then
        echo "regular unmount failed, attempting to force unmount..."
        hdiutil detach "$mount_point" -force
    fi
    echo "${app_name} has been installed to /Applications."
else
    chmod u+x ./"$file"/nym-vpn_${version}_amd64.AppImage
    echo "moving the nym-vpn client binary to $nym_vpn_dir..."
    mv ./"$file"/nym-vpn_${version}_amd64.AppImage $nym_vpn_dir
   
fi

echo "creating the configuration file in the root directory"
cd $nym_vpn_dir

echo "downloading .env file..."
curl -L "$sandbox_env_url" -o .env

echo "script completed. the VPN binary and configuration files are in $nym_vpn_dir."
echo "to run the VPN please use:"
echo "MacOS: sudo -E /Applications/nym-vpn.app/Contents/MacOS/nym-vpn"
echo "Linux: sudo -E ~/nym-vpn-latest/nym-vpn_${version}_amd64.AppImage"

case "$machine" in
Darwin*)
    echo "cleaning up files..."
    rm -rf "macos" "dmg" "$file".tar.gz
    echo "opening ${app_name}..."
    open "/Applications/nym-vpn.app/Contents/MacOS/nym-vpn"
    ;;
Linux*)
    echo "cleaning up files"
    rm -rf "$file".tar.gz
    echo "now running the vpn binary"
    sudo -E ~/nym-vpn-latest/nym-vpn_${version}_amd64.AppImage
    ;;
*)
    echo "not valid machine download"
    ;;
esac