git.squeep.com Git - akkoma/blob - lib/pleroma/web/activity_pub/visibility.ex

   1 defmodule Pleroma.Web.ActivityPub.Visibility do
   2   alias Pleroma.Activity
   3   alias Pleroma.Object
   4   alias Pleroma.User
   5
   6   def is_public?(%Object{data: %{"type" => "Tombstone"}}), do: false
   7   def is_public?(%Object{data: data}), do: is_public?(data)
   8   def is_public?(%Activity{data: data}), do: is_public?(data)
   9   def is_public?(%{"directMessage" => true}), do: false
  10
  11   def is_public?(data) do
  12     "https://www.w3.org/ns/activitystreams#Public" in (data["to"] ++ (data["cc"] || []))
  13   end
  14
  15   def is_private?(activity) do
  16     unless is_public?(activity) do
  17       follower_address = User.get_cached_by_ap_id(activity.data["actor"]).follower_address
  18       Enum.any?(activity.data["to"], &(&1 == follower_address))
  19     else
  20       false
  21     end
  22   end
  23
  24   def is_direct?(%Activity{data: %{"directMessage" => true}}), do: true
  25   def is_direct?(%Object{data: %{"directMessage" => true}}), do: true
  26
  27   def is_direct?(activity) do
  28     !is_public?(activity) && !is_private?(activity)
  29   end
  30
  31   def visible_for_user?(activity, nil) do
  32     is_public?(activity)
  33   end
  34
  35   def visible_for_user?(activity, user) do
  36     x = [user.ap_id | user.following]
  37     y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || [])
  38     visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))
  39   end
  40
  41   # guard
  42   def entire_thread_visible_for_user?(nil, _user), do: false
  43
  44   # 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
  45   # credo:disable-for-previous-line Credo.Check.Readability.MaxLineLength
  46
  47   def entire_thread_visible_for_user?(
  48         %Activity{} = tail,
  49         # %Activity{data: %{"object" => %{"inReplyTo" => parent_id}}} = tail,
  50         user
  51       ) do
  52     case Object.normalize(tail) do
  53       %{data: %{"inReplyTo" => parent_id}} when is_binary(parent_id) ->
  54         parent = Activity.get_in_reply_to_activity(tail)
  55         visible_for_user?(tail, user) && entire_thread_visible_for_user?(parent, user)
  56
  57       _ ->
  58         visible_for_user?(tail, user)
  59     end
  60   end
  61
  62   def get_visibility(object) do
  63     public = "https://www.w3.org/ns/activitystreams#Public"
  64     to = object.data["to"] || []
  65     cc = object.data["cc"] || []
  66
  67     cond do
  68       public in to ->
  69         "public"
  70
  71       public in cc ->
  72         "unlisted"
  73
  74       # this should use the sql for the object's activity
  75       Enum.any?(to, &String.contains?(&1, "/followers")) ->
  76         "private"
  77
  78       length(cc) > 0 ->
  79         "private"
  80
  81       true ->
  82         "direct"
  83     end
  84   end
  85 end