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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Plugs.UserIsAdminPlug do
   6   import Pleroma.Web.TranslationHelpers
   7   import Plug.Conn
   8
   9   alias Pleroma.User
  10   alias Pleroma.Web.OAuth
  11
  12   def init(options) do
  13     options
  14   end
  15
  16   def call(%Plug.Conn{assigns: %{token: %OAuth.Token{scopes: oauth_scopes} = _token}} = conn, _) do
  17     if OAuth.Scopes.contains_admin_scopes?(oauth_scopes) do
  18       # Note: checking for _any_ admin scope presence, not necessarily fitting requested action.
  19       #   Thus, controller must explicitly invoke OAuthScopesPlug to verify scope requirements.
  20       conn
  21     else
  22       fail(conn)
  23     end
  24   end
  25
  26   unless Pleroma.Config.enforce_oauth_admin_scope_usage?() do
  27     # To do: once AdminFE makes use of "admin" scope, disable the following func definition
  28     #   (fail on no admin scope(s) in token even if `is_admin` is true)
  29     def call(%Plug.Conn{assigns: %{user: %User{is_admin: true}}} = conn, _) do
  30       conn
  31     end
  32   end
  33
  34   def call(conn, _) do
  35     fail(conn)
  36   end
  37
  38   defp fail(conn) do
  39     conn
  40     |> render_error(:forbidden, "User is not an admin or OAuth admin scope is not granted.")
  41     |> halt()
  42   end
  43 end