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Authentication library for Elixir using Plug
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Files
lib/openmaize/logout.ex
defmodule Openmaize.Logout do
@moduledoc """
Plug to handle logout requests.
After logging out, the user's token is added to a store of invalidated
tokens, so it cannot be used again.
If the token was stored in a cookie, then the cookie will be deleted.
If the token was stored in sessionStorage, then you need to use the
front-end framework to delete the token.
## Examples with Phoenix
In the `web/router.ex` file, add the following line (you can use
a different controller and route):
get "/logout", PageController, :logout
And then in the `page_controller.ex` file, add:
plug Openmaize.Logout when action in [:logout]
"""
import Plug.Conn
alias Openmaize.JWTmanager
@behaviour Plug
def init(opts), do: opts
@doc """
Handle logout.
"""
def call(%Plug.Conn{req_cookies: %{"access_token" => token}} = conn, _opts) do
JWTmanager.add_jwt(token)
assign(conn, :current_user, nil)
|> delete_resp_cookie("access_token")
|> put_private(:openmaize_info, "You have been logged out")
end
def call(%Plug.Conn{req_headers: headers} = conn, _opts) do
case List.keyfind(headers, "authorization", 0) do
{_, "Bearer " <> token} -> JWTmanager.add_jwt(token)
nil -> nil
end
assign(conn, :current_user, nil)
|> put_private(:openmaize_info, "You have been logged out")
end
end