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

   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.Visibility do
   6   alias Pleroma.Activity
   7   alias Pleroma.Object
   8   alias Pleroma.Repo
   9   alias Pleroma.User
  10
  11   def is_public?(%Object{data: %{"type" => "Tombstone"}}), do: false
  12   def is_public?(%Object{data: data}), do: is_public?(data)
  13   def is_public?(%Activity{data: data}), do: is_public?(data)
  14   def is_public?(%{"directMessage" => true}), do: false
  15
  16   def is_public?(data) do
  17     "https://www.w3.org/ns/activitystreams#Public" in (data["to"] ++ (data["cc"] || []))
  18   end
  19
  20   def is_private?(activity) do
  21     with false <- is_public?(activity),
  22          %User{follower_address: follower_address} <-
  23            User.get_cached_by_ap_id(activity.data["actor"]) do
  24       follower_address in activity.data["to"]
  25     else
  26       _ -> false
  27     end
  28   end
  29
  30   def is_direct?(%Activity{data: %{"directMessage" => true}}), do: true
  31   def is_direct?(%Object{data: %{"directMessage" => true}}), do: true
  32
  33   def is_direct?(activity) do
  34     !is_public?(activity) && !is_private?(activity)
  35   end
  36
  37   def visible_for_user?(activity, nil) do
  38     is_public?(activity)
  39   end
  40
  41   def visible_for_user?(activity, user) do
  42     x = [user.ap_id | user.following]
  43     y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || [])
  44     visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))
  45   end
  46
  47   def entire_thread_visible_for_user?(%Activity{} = activity, %User{} = user) do
  48     {:ok, %{rows: [[result]]}} =
  49       Ecto.Adapters.SQL.query(Repo, "SELECT thread_visibility($1, $2)", [
  50         user.ap_id,
  51         activity.data["id"]
  52       ])
  53
  54     result
  55   end
  56
  57   def get_visibility(object) do
  58     public = "https://www.w3.org/ns/activitystreams#Public"
  59     to = object.data["to"] || []
  60     cc = object.data["cc"] || []
  61
  62     cond do
  63       public in to ->
  64         "public"
  65
  66       public in cc ->
  67         "unlisted"
  68
  69       # this should use the sql for the object's activity
  70       Enum.any?(to, &String.contains?(&1, "/followers")) ->
  71         "private"
  72
  73       object.data["directMessage"] == true ->
  74         "direct"
  75
  76       length(cc) > 0 ->
  77         "private"
  78
  79       true ->
  80         "direct"
  81     end
  82   end
  83 end