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   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.ObjectValidator do
   6   @moduledoc """
   7   This module is responsible for validating an object (which can be an activity)
   8   and checking if it is both well formed and also compatible with our view of
   9   the system.
  10   """
  11
  12   alias Pleroma.Object
  13   alias Pleroma.User
  14   alias Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator
  15
  16   @spec validate(map(), keyword()) :: {:ok, map(), keyword()} | {:error, any()}
  17   def validate(object, meta)
  18
  19   def validate(%{"type" => "Like"} = object, meta) do
  20     with {:ok, object} <-
  21            object |> LikeValidator.cast_and_validate() |> Ecto.Changeset.apply_action(:insert) do
  22       object = stringify_keys(object |> Map.from_struct())
  23       {:ok, object, meta}
  24     end
  25   end
  26
  27   def stringify_keys(object) do
  28     object
  29     |> Enum.map(fn {key, val} -> {to_string(key), val} end)
  30     |> Enum.into(%{})
  31   end
  32
  33   def fetch_actor_and_object(object) do
  34     User.get_or_fetch_by_ap_id(object["actor"])
  35     Object.normalize(object["object"])
  36     :ok
  37   end
  38 end