Add admin interface to manage instances subscriptions

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/mobilizon_web/controllers/activity_pub_controller.ex

@@ -17,6 +17,7 @@ defmodule MobilizonWeb.ActivityPubController do
 
   action_fallback(:errors)
 
+  plug(MobilizonWeb.Plugs.Federating when action in [:inbox, :relay])
   plug(:relay_active? when action in [:relay])
 
   def relay_active?(conn, _) do
@@ -114,7 +115,7 @@ defmodule MobilizonWeb.ActivityPubController do
   end
 
   def relay(conn, _params) do
-    with {:commit, %Actor{} = actor} <- Cache.get_relay() do
+    with {status, %Actor{} = actor} when status in [:commit, :ok] <- Cache.get_relay() do
       conn
       |> put_resp_header("content-type", "application/activity+json")
       |> json(ActorView.render("actor.json", %{actor: actor}))

lib/mobilizon_web/controllers/page_controller.ex

@@ -28,13 +28,22 @@ defmodule MobilizonWeb.PageController do
 
   defp render_or_error(conn, check_fn, status, object_type, object) do
     if check_fn.(status, object) do
-      render(conn, object_type, object: object)
+      case object do
+        %Mobilizon.Tombstone{} ->
+          conn
+          |> put_status(:gone)
+          |> render(object_type, object: object)
+
+        _ ->
+          render(conn, object_type, object: object)
+      end
     else
       {:error, :not_found}
     end
   end
 
   defp is_visible?(%{visibility: v}), do: v in [:public, :unlisted]
+  defp is_visible?(%Mobilizon.Tombstone{}), do: true
 
   defp ok_status?(status), do: status in [:ok, :commit]
   defp ok_status?(status, _), do: ok_status?(status)

lib/mobilizon_web/controllers/web_finger_controller.ex

@@ -9,6 +9,7 @@ defmodule MobilizonWeb.WebFingerController do
   """
   use MobilizonWeb, :controller
 
+  plug(MobilizonWeb.Plugs.Federating)
   alias Mobilizon.Service.WebFinger
 
   @doc """