akkoma/lib/pleroma/web/rich_media/helpers.ex
2019-06-25 17:44:24 +03:00

50 lines
1.7 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright _ 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.RichMedia.Helpers do
alias Pleroma.Activity
alias Pleroma.HTML
alias Pleroma.Object
alias Pleroma.Web.RichMedia.Parser
@private_ip_regexp ~r/(127\.)|(10\.\d+\.\d+.\d+)|(192\.168\.)
|(^172\.1[6-9]\.)|(^172\.2[0-9]\.)|(^172\.3[0-1]\.)|(localhost)/
defp validate_page_url(page_url) when is_binary(page_url) do
validate_tld = Application.get_env(:auto_linker, :opts)[:validate_tld]
cond do
Regex.match?(@private_ip_regexp, page_url) ->
:error
AutoLinker.Parser.url?(page_url, scheme: true, validate_tld: validate_tld) ->
URI.parse(page_url) |> validate_page_url
true ->
:error
end
end
defp validate_page_url(%URI{authority: nil}), do: :error
defp validate_page_url(%URI{scheme: nil}), do: :error
defp validate_page_url(%URI{}), do: :ok
defp validate_page_url(_), do: :error
def fetch_data_for_activity(%Activity{data: %{"type" => "Create"}} = activity) do
with true <- Pleroma.Config.get([:rich_media, :enabled]),
%Object{} = object <- Object.normalize(activity),
false <- object.data["sensitive"] || false,
{:ok, page_url} <- HTML.extract_first_external_url(object, object.data["content"]),
:ok <- validate_page_url(page_url),
{:ok, rich_media} <- Parser.parse(page_url) do
%{page_url: page_url, rich_media: rich_media}
else
_ -> %{}
end
end
def fetch_data_for_activity(_), do: %{}
def perform(:fetch, %Activity{} = activity), do: fetch_data_for_activity(activity)
end