From 2c4844237f294d27f58737f9694f77b1cfcb10e7 Mon Sep 17 00:00:00 2001 From: Ivan Tashkinov Date: Thu, 30 Apr 2020 18:19:51 +0300 Subject: [PATCH] Refactoring of :if_func / :unless_func plug options (general availability). Added tests for Pleroma.Web.Plug. --- lib/pleroma/plugs/ensure_authenticated_plug.ex | 17 +--- lib/pleroma/plugs/federating_plug.ex | 3 + .../web/activity_pub/activity_pub_controller.ex | 2 +- lib/pleroma/web/feed/user_controller.ex | 2 +- lib/pleroma/web/ostatus/ostatus_controller.ex | 2 +- lib/pleroma/web/static_fe/static_fe_controller.ex | 2 +- lib/pleroma/web/web.ex | 10 ++- test/plugs/ensure_authenticated_plug_test.exs | 4 +- test/web/plugs/plug_test.exs | 91 ++++++++++++++++++++++ 9 files changed, 109 insertions(+), 24 deletions(-) create mode 100644 test/web/plugs/plug_test.exs diff --git a/lib/pleroma/plugs/ensure_authenticated_plug.ex b/lib/pleroma/plugs/ensure_authenticated_plug.ex index 9c8f5597f..9d5176e2b 100644 --- a/lib/pleroma/plugs/ensure_authenticated_plug.ex +++ b/lib/pleroma/plugs/ensure_authenticated_plug.ex @@ -19,22 +19,7 @@ defmodule Pleroma.Plugs.EnsureAuthenticatedPlug do conn end - def perform(conn, options) do - perform = - cond do - options[:if_func] -> options[:if_func].() - options[:unless_func] -> !options[:unless_func].() - true -> true - end - - if perform do - fail(conn) - else - conn - end - end - - def fail(conn) do + def perform(conn, _) do conn |> render_error(:forbidden, "Invalid credentials.") |> halt() diff --git a/lib/pleroma/plugs/federating_plug.ex b/lib/pleroma/plugs/federating_plug.ex index 7d947339f..09038f3c6 100644 --- a/lib/pleroma/plugs/federating_plug.ex +++ b/lib/pleroma/plugs/federating_plug.ex @@ -19,6 +19,9 @@ defmodule Pleroma.Web.FederatingPlug do def federating?, do: Pleroma.Config.get([:instance, :federating]) + # Definition for the use in :if_func / :unless_func plug options + def federating?(_conn), do: federating?() + defp fail(conn) do conn |> put_status(404) diff --git a/lib/pleroma/web/activity_pub/activity_pub_controller.ex b/lib/pleroma/web/activity_pub/activity_pub_controller.ex index d625530ec..a909516be 100644 --- a/lib/pleroma/web/activity_pub/activity_pub_controller.ex +++ b/lib/pleroma/web/activity_pub/activity_pub_controller.ex @@ -34,7 +34,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do plug( EnsureAuthenticatedPlug, - [unless_func: &FederatingPlug.federating?/0] when action not in @federating_only_actions + [unless_func: &FederatingPlug.federating?/1] when action not in @federating_only_actions ) plug( diff --git a/lib/pleroma/web/feed/user_controller.ex b/lib/pleroma/web/feed/user_controller.ex index e27f85929..1b72e23dc 100644 --- a/lib/pleroma/web/feed/user_controller.ex +++ b/lib/pleroma/web/feed/user_controller.ex @@ -27,7 +27,7 @@ defmodule Pleroma.Web.Feed.UserController do when format in ["json", "activity+json"] do with %{halted: false} = conn <- Pleroma.Plugs.EnsureAuthenticatedPlug.call(conn, - unless_func: &Pleroma.Web.FederatingPlug.federating?/0 + unless_func: &Pleroma.Web.FederatingPlug.federating?/1 ) do ActivityPubController.call(conn, :user) end diff --git a/lib/pleroma/web/ostatus/ostatus_controller.ex b/lib/pleroma/web/ostatus/ostatus_controller.ex index 6fd3cfce5..6971cd9f8 100644 --- a/lib/pleroma/web/ostatus/ostatus_controller.ex +++ b/lib/pleroma/web/ostatus/ostatus_controller.ex @@ -17,7 +17,7 @@ defmodule Pleroma.Web.OStatus.OStatusController do alias Pleroma.Web.Router plug(Pleroma.Plugs.EnsureAuthenticatedPlug, - unless_func: &Pleroma.Web.FederatingPlug.federating?/0 + unless_func: &Pleroma.Web.FederatingPlug.federating?/1 ) plug( diff --git a/lib/pleroma/web/static_fe/static_fe_controller.ex b/lib/pleroma/web/static_fe/static_fe_controller.ex index 7a35238d7..c3efb6651 100644 --- a/lib/pleroma/web/static_fe/static_fe_controller.ex +++ b/lib/pleroma/web/static_fe/static_fe_controller.ex @@ -18,7 +18,7 @@ defmodule Pleroma.Web.StaticFE.StaticFEController do plug(:assign_id) plug(Pleroma.Plugs.EnsureAuthenticatedPlug, - unless_func: &Pleroma.Web.FederatingPlug.federating?/0 + unless_func: &Pleroma.Web.FederatingPlug.federating?/1 ) @page_keys ["max_id", "min_id", "limit", "since_id", "order"] diff --git a/lib/pleroma/web/web.ex b/lib/pleroma/web/web.ex index 08e42a7e5..4f9281851 100644 --- a/lib/pleroma/web/web.ex +++ b/lib/pleroma/web/web.ex @@ -200,11 +200,17 @@ defmodule Pleroma.Web do @impl Plug @doc """ - If marked as skipped, returns `conn`, otherwise calls `perform/2`. + Before-plug hook that + * ensures the plug is not skipped + * processes `:if_func` / `:unless_func` functional pre-run conditions + * adds plug to the list of called plugs and calls `perform/2` if checks are passed + Note: multiple invocations of the same plug (with different or same options) are allowed. """ def call(%Plug.Conn{} = conn, options) do - if PlugHelper.plug_skipped?(conn, __MODULE__) do + if PlugHelper.plug_skipped?(conn, __MODULE__) || + (options[:if_func] && !options[:if_func].(conn)) || + (options[:unless_func] && options[:unless_func].(conn)) do conn else conn = diff --git a/test/plugs/ensure_authenticated_plug_test.exs b/test/plugs/ensure_authenticated_plug_test.exs index 689fe757f..4e6142aab 100644 --- a/test/plugs/ensure_authenticated_plug_test.exs +++ b/test/plugs/ensure_authenticated_plug_test.exs @@ -27,8 +27,8 @@ defmodule Pleroma.Plugs.EnsureAuthenticatedPlugTest do describe "with :if_func / :unless_func options" do setup do %{ - true_fn: fn -> true end, - false_fn: fn -> false end + true_fn: fn _conn -> true end, + false_fn: fn _conn -> false end } end diff --git a/test/web/plugs/plug_test.exs b/test/web/plugs/plug_test.exs new file mode 100644 index 000000000..943e484e7 --- /dev/null +++ b/test/web/plugs/plug_test.exs @@ -0,0 +1,91 @@ +# Pleroma: A lightweight social networking server +# Copyright © 2017-2020 Pleroma Authors +# SPDX-License-Identifier: AGPL-3.0-only + +defmodule Pleroma.Web.PlugTest do + @moduledoc "Tests for the functionality added via `use Pleroma.Web, :plug`" + + alias Pleroma.Plugs.ExpectAuthenticatedCheckPlug + alias Pleroma.Plugs.ExpectPublicOrAuthenticatedCheckPlug + alias Pleroma.Plugs.PlugHelper + + import Mock + + use Pleroma.Web.ConnCase + + describe "when plug is skipped, " do + setup_with_mocks( + [ + {ExpectPublicOrAuthenticatedCheckPlug, [:passthrough], []} + ], + %{conn: conn} + ) do + conn = ExpectPublicOrAuthenticatedCheckPlug.skip_plug(conn) + %{conn: conn} + end + + test "it neither adds plug to called plugs list nor calls `perform/2`, " <> + "regardless of :if_func / :unless_func options", + %{conn: conn} do + for opts <- [%{}, %{if_func: fn _ -> true end}, %{unless_func: fn _ -> false end}] do + ret_conn = ExpectPublicOrAuthenticatedCheckPlug.call(conn, opts) + + refute called(ExpectPublicOrAuthenticatedCheckPlug.perform(:_, :_)) + refute PlugHelper.plug_called?(ret_conn, ExpectPublicOrAuthenticatedCheckPlug) + end + end + end + + describe "when plug is NOT skipped, " do + setup_with_mocks([{ExpectAuthenticatedCheckPlug, [:passthrough], []}]) do + :ok + end + + test "with no pre-run checks, adds plug to called plugs list and calls `perform/2`", %{ + conn: conn + } do + ret_conn = ExpectAuthenticatedCheckPlug.call(conn, %{}) + + assert called(ExpectAuthenticatedCheckPlug.perform(ret_conn, :_)) + assert PlugHelper.plug_called?(ret_conn, ExpectAuthenticatedCheckPlug) + end + + test "when :if_func option is given, calls the plug only if provided function evals tru-ish", + %{conn: conn} do + ret_conn = ExpectAuthenticatedCheckPlug.call(conn, %{if_func: fn _ -> false end}) + + refute called(ExpectAuthenticatedCheckPlug.perform(:_, :_)) + refute PlugHelper.plug_called?(ret_conn, ExpectAuthenticatedCheckPlug) + + ret_conn = ExpectAuthenticatedCheckPlug.call(conn, %{if_func: fn _ -> true end}) + + assert called(ExpectAuthenticatedCheckPlug.perform(ret_conn, :_)) + assert PlugHelper.plug_called?(ret_conn, ExpectAuthenticatedCheckPlug) + end + + test "if :unless_func option is given, calls the plug only if provided function evals falsy", + %{conn: conn} do + ret_conn = ExpectAuthenticatedCheckPlug.call(conn, %{unless_func: fn _ -> true end}) + + refute called(ExpectAuthenticatedCheckPlug.perform(:_, :_)) + refute PlugHelper.plug_called?(ret_conn, ExpectAuthenticatedCheckPlug) + + ret_conn = ExpectAuthenticatedCheckPlug.call(conn, %{unless_func: fn _ -> false end}) + + assert called(ExpectAuthenticatedCheckPlug.perform(ret_conn, :_)) + assert PlugHelper.plug_called?(ret_conn, ExpectAuthenticatedCheckPlug) + end + + test "allows a plug to be called multiple times (even if it's in called plugs list)", %{ + conn: conn + } do + conn = ExpectAuthenticatedCheckPlug.call(conn, %{an_option: :value1}) + assert called(ExpectAuthenticatedCheckPlug.perform(conn, %{an_option: :value1})) + + assert PlugHelper.plug_called?(conn, ExpectAuthenticatedCheckPlug) + + conn = ExpectAuthenticatedCheckPlug.call(conn, %{an_option: :value2}) + assert called(ExpectAuthenticatedCheckPlug.perform(conn, %{an_option: :value2})) + end + end +end