defmodule Pleroma.Web.ActivityPub.Visibility do alias Pleroma.Activity alias Pleroma.Object alias Pleroma.User def is_public?(%Object{data: %{"type" => "Tombstone"}}), do: false def is_public?(%Object{data: data}), do: is_public?(data) def is_public?(%Activity{data: data}), do: is_public?(data) def is_public?(%{"directMessage" => true}), do: false def is_public?(data) do "https://www.w3.org/ns/activitystreams#Public" in (data["to"] ++ (data["cc"] || [])) 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)) else false end end def is_direct?(%Activity{data: %{"directMessage" => true}}), do: true def is_direct?(%Object{data: %{"directMessage" => true}}), do: true def is_direct?(activity) do !is_public?(activity) && !is_private?(activity) end def visible_for_user?(activity, nil) do is_public?(activity) end def visible_for_user?(activity, user) do x = [user.ap_id | user.following] y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || []) visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y)) end # guard def entire_thread_visible_for_user?(nil, _user), do: false # XXX: Probably even more inefficient than the previous implementation intended to be a placeholder untill https://git.pleroma.social/pleroma/pleroma/merge_requests/971 is in develop # credo:disable-for-previous-line Credo.Check.Readability.MaxLineLength def entire_thread_visible_for_user?( %Activity{} = tail, # %Activity{data: %{"object" => %{"inReplyTo" => parent_id}}} = tail, user ) do case Object.normalize(tail) do %{data: %{"inReplyTo" => parent_id}} when is_binary(parent_id) -> parent = Activity.get_in_reply_to_activity(tail) visible_for_user?(tail, user) && entire_thread_visible_for_user?(parent, user) _ -> visible_for_user?(tail, user) end end end