git.squeep.com Git - akkoma/blob - lib/pleroma/web/rich_media/helpers.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.RichMedia.Helpers do
   6   alias Pleroma.Activity
   7   alias Pleroma.Object
   8   alias Pleroma.HTML
   9   alias Pleroma.Web.RichMedia.Parser
  10
  11   defp validate_page_url(page_url) when is_binary(page_url) do
  12     if AutoLinker.Parser.is_url?(page_url, true) do
  13       URI.parse(page_url) |> validate_page_url
  14     else
  15       :error
  16     end
  17   end
  18
  19   defp validate_page_url(%URI{authority: nil}), do: :error
  20   defp validate_page_url(%URI{scheme: nil}), do: :error
  21   defp validate_page_url(%URI{}), do: :ok
  22   defp validate_page_url(_), do: :error
  23
  24   def fetch_data_for_activity(%Activity{} = activity) do
  25     with true <- Pleroma.Config.get([:rich_media, :enabled]),
  26          %Object{} = object <- Object.normalize(activity.data["object"]),
  27          {:ok, page_url} <- HTML.extract_first_external_url(object, object.data["content"]),
  28          :ok <- validate_page_url(page_url),
  29          {:ok, rich_media} <- Parser.parse(page_url) do
  30       %{page_url: page_url, rich_media: rich_media}
  31     else
  32       _ -> %{}
  33     end
  34   end
  35 end