activitypub: publisher: align sharedinbox usage with AP specification rules

[akkoma] / lib / pleroma / web / activity_pub / visibility.ex

diff --git a/lib/pleroma/web/activity_pub/visibility.ex b/lib/pleroma/web/activity_pub/visibility.ex
index 46dd465752d46d9bea47d53438120340911d4b01..2666edc7ce0934302011cc748aafb0bf3959d413 100644 (file)
--- a/lib/pleroma/web/activity_pub/visibility.ex
+++ b/lib/pleroma/web/activity_pub/visibility.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.ActivityPub.Visibility do
   alias Pleroma.Activity
   alias Pleroma.Object
@@ -14,11 +18,12 @@ defmodule Pleroma.Web.ActivityPub.Visibility do
   end
 
   def is_private?(activity) do
-    unless is_public?(activity) do
-      follower_address = User.get_cached_by_ap_id(activity.data["actor"]).follower_address
-      Enum.any?(activity.data["to"], &(&1 == follower_address))
+    with false <- is_public?(activity),
+         %User{follower_address: follower_address} <-
+           User.get_cached_by_ap_id(activity.data["actor"]) do
+      follower_address in activity.data["to"]
     else
-      false
+      _ -> false
     end
   end
 
@@ -29,6 +34,20 @@ defmodule Pleroma.Web.ActivityPub.Visibility do
     !is_public?(activity) && !is_private?(activity)
   end
 
+  def is_list?(%{data: %{"listMessage" => _}}), do: true
+  def is_list?(_), do: false
+
+  def visible_for_user?(%{actor: ap_id}, %User{ap_id: ap_id}), do: true
+
+  def visible_for_user?(%{data: %{"listMessage" => list_ap_id}} = activity, %User{} = user) do
+    user.ap_id in activity.data["to"] ||
+      list_ap_id
+      |> Pleroma.List.get_by_ap_id()
+      |> Pleroma.List.member?(user)
+  end
+
+  def visible_for_user?(%{data: %{"listMessage" => _}}, nil), do: false
+
   def visible_for_user?(activity, nil) do
     is_public?(activity)
   end
@@ -65,6 +84,12 @@ defmodule Pleroma.Web.ActivityPub.Visibility do
       Enum.any?(to, &String.contains?(&1, "/followers")) ->
         "private"
 
+      object.data["directMessage"] == true ->
+        "direct"
+
+      is_binary(object.data["listMessage"]) ->
+        "list"
+
       length(cc) > 0 ->
         "private"