Blaguth

Basic Access Authentication in Plug applications.

Installation

Add Blaguth as a dependency to your mix.exs file:

defp deps do
  [{:blaguth, "~> 1.2.0"}]
end

After you are done, run mix deps.get in your shell to fetch the dependencies.

Usage

Add Blaguth on top of a Plug Stack as follows:

defmodule CavePlug do
  import Plug.Conn
  use Plug.Builder

  plug Blaguth, realm: "Secret",
    credentials: {"Ali Baba", "Open Sesame"}

  plug :index

  def index(conn, _opts) do
    send_resp(conn, 200, "Hello Ali Baba")
  end
end

If you need more precise control over authentication process:

defmodule AdvancedPlug do
  import Plug.Conn
  use Plug.Router

  plug Blaguth

  plug :match
  plug :dispatch

  get "/" do
    send_resp(conn, 200, "Everyone can see me!")
  end

  get "/secret" do
    if authenticated?(conn.assigns) do
      send_resp(conn, 200, "I'm only accessible if you know the password")
    else
      Blaguth.halt_with_login(conn, "Secret")
    end
  end

  defp authenticated?(%{credentials: {user, pass}}) do
    User.authenticate(user, pass)
  end
end