alias Pleroma.Object
alias Pleroma.Web.RichMedia.Parser
+ @options [
+ pool: :media,
+ max_body: 2_000_000,
+ recv_timeout: 2_000
+ ]
+
@spec validate_page_url(URI.t() | binary()) :: :ok | :error
defp validate_page_url(page_url) when is_binary(page_url) do
- validate_tld = Pleroma.Config.get([Pleroma.Formatter, :validate_tld])
+ validate_tld = Config.get([Pleroma.Formatter, :validate_tld])
page_url
|> Linkify.Parser.url?(validate_tld: validate_tld)
|> hd
end
- def fetch_data_for_activity(%Activity{data: %{"type" => "Create"}} = activity) do
+ def fetch_data_for_object(object) do
with true <- 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, page_url} <-
+ HTML.extract_first_external_url_from_object(object),
:ok <- validate_page_url(page_url),
{:ok, rich_media} <- Parser.parse(page_url) do
%{page_url: page_url, rich_media: rich_media}
end
end
+ def fetch_data_for_activity(%Activity{data: %{"type" => "Create"}} = activity) do
+ with true <- Config.get([:rich_media, :enabled]),
+ %Object{} = object <- Object.normalize(activity, fetch: false) do
+ fetch_data_for_object(object)
+ else
+ _ -> %{}
+ end
+ end
+
def fetch_data_for_activity(_), do: %{}
- def perform(:fetch, %Activity{} = activity) do
- fetch_data_for_activity(activity)
- :ok
+ def rich_media_get(url) do
+ headers = [{"user-agent", Pleroma.Application.user_agent() <> "; Bot"}]
+
+ head_check =
+ case Pleroma.HTTP.head(url, headers, @options) do
+ # If the HEAD request didn't reach the server for whatever reason,
+ # we assume the GET that comes right after won't either
+ {:error, _} = e ->
+ e
+
+ {:ok, %Tesla.Env{status: 200, headers: headers}} ->
+ with :ok <- check_content_type(headers),
+ :ok <- check_content_length(headers),
+ do: :ok
+
+ _ ->
+ :ok
+ end
+
+ with :ok <- head_check, do: Pleroma.HTTP.get(url, headers, @options)
+ end
+
+ defp check_content_type(headers) do
+ case List.keyfind(headers, "content-type", 0) do
+ {_, content_type} ->
+ case Plug.Conn.Utils.media_type(content_type) do
+ {:ok, "text", "html", _} -> :ok
+ _ -> {:error, {:content_type, content_type}}
+ end
+
+ _ ->
+ :ok
+ end
+ end
+
+ @max_body @options[:max_body]
+ defp check_content_length(headers) do
+ case List.keyfind(headers, "content-length", 0) do
+ {_, maybe_content_length} ->
+ case Integer.parse(maybe_content_length) do
+ {content_length, ""} when content_length <= @max_body -> :ok
+ {_, ""} -> {:error, :body_too_large}
+ _ -> :ok
+ end
+
+ _ ->
+ :ok
+ end
end
end