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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.Plugs.EnsurePublicOrAuthenticatedPlug do
   6   @moduledoc """
   7   Ensures instance publicity or _user_ authentication
   8   (app-bound user-unbound tokens are accepted only if the instance is public).
   9   """
  10
  11   import Pleroma.Web.TranslationHelpers
  12   import Plug.Conn
  13
  14   alias Pleroma.Config
  15   alias Pleroma.User
  16
  17   use Pleroma.Web, :plug
  18
  19   def init(options) do
  20     options
  21   end
  22
  23   @impl true
  24   def perform(conn, _) do
  25     public? = Config.get!([:instance, :public])
  26
  27     case {public?, conn} do
  28       {true, _} ->
  29         conn
  30
  31       {false, %{assigns: %{user: %User{}}}} ->
  32         conn
  33
  34       {false, _} ->
  35         conn
  36         |> render_error(:forbidden, "This resource requires authentication.")
  37         |> halt
  38     end
  39   end
  40 end