use Pleroma.Web, :controller
alias Pleroma.Config
- alias Pleroma.Helpers.MogrifyHelper
+ alias Pleroma.Helpers.MediaHelper
alias Pleroma.ReverseProxy
alias Pleroma.Web.MediaProxy
def remote(conn, %{"sig" => sig64, "url" => url64}) do
with {_, true} <- {:enabled, MediaProxy.enabled?()},
{:ok, url} <- MediaProxy.decode_url(sig64, url64),
+ {_, false} <- {:in_banned_urls, MediaProxy.in_banned_urls(url)},
:ok <- MediaProxy.verify_request_path_and_url(conn, url) do
- proxy_opts = Config.get([:media_proxy, :proxy_opts], [])
- ReverseProxy.call(conn, url, proxy_opts)
+ ReverseProxy.call(conn, url, media_proxy_opts())
else
{:enabled, false} ->
send_resp(conn, 404, Plug.Conn.Status.reason_phrase(404))
+ {:in_banned_urls, true} ->
+ send_resp(conn, 404, Plug.Conn.Status.reason_phrase(404))
+
{:error, :invalid_signature} ->
send_resp(conn, 403, Plug.Conn.Status.reason_phrase(403))
defp handle_preview(conn, url) do
with {:ok, %{status: status} = head_response} when status in 200..299 <-
- Tesla.head(url, opts: [adapter: [timeout: preview_head_request_timeout()]]) do
+ Tesla.head(url,
+ opts: [adapter: [timeout: preview_head_request_timeout(), follow_redirect: true]]
+ ) do
content_type = Tesla.get_header(head_response, "content-type")
handle_preview(content_type, conn, url)
else
end
end
+ # TODO: find a workaround so avatar_static and banner_static can work.
+ # Those only permit GIFs for animation, so we have to permit a way to
+ # allow those to get real static variants.
+ defp handle_preview("image/gif" = _content_type, conn, url) do
+ mediaproxy_url = url |> MediaProxy.url()
+
+ redirect(conn, external: mediaproxy_url)
+ end
+
+ defp handle_preview("image/png" <> _ = _content_type, conn, url) do
+ handle_png_preview(conn, url)
+ end
+
+ defp handle_preview("image/" <> _ = _content_type, conn, url) do
+ handle_jpeg_preview(conn, url)
+ end
+
+ defp handle_preview("video/" <> _ = _content_type, conn, url) do
+ handle_video_preview(conn, url)
+ end
+
+ defp handle_preview(content_type, conn, _url) do
+ send_resp(conn, :unprocessable_entity, "Unsupported content type: #{content_type}.")
+ end
+
+ defp handle_png_preview(%{params: params} = conn, url) do
+ quality = Config.get!([:media_preview_proxy, :image_quality])
+
+ with {thumbnail_max_width, thumbnail_max_height} <- thumbnail_max_dimensions(params),
+ {:ok, thumbnail_binary} <-
+ MediaHelper.image_resize(
+ url,
+ %{
+ max_width: thumbnail_max_width,
+ max_height: thumbnail_max_height,
+ quality: quality,
+ format: "png"
+ }
+ ) do
+ conn
+ |> put_resp_header("content-type", "image/png")
+ |> put_resp_header("content-disposition", "inline; filename=\"preview.png\"")
+ |> send_resp(200, thumbnail_binary)
+ else
+ _ ->
+ send_resp(conn, :failed_dependency, "Can't handle preview.")
+ end
+ end
+
+ defp handle_jpeg_preview(%{params: params} = conn, url) do
+ quality = Config.get!([:media_preview_proxy, :image_quality])
+
+ with {thumbnail_max_width, thumbnail_max_height} <- thumbnail_max_dimensions(params),
+ {:ok, thumbnail_binary} <-
+ MediaHelper.image_resize(
+ url,
+ %{max_width: thumbnail_max_width, max_height: thumbnail_max_height, quality: quality}
+ ) do
+ conn
+ |> put_resp_header("content-type", "image/jpeg")
+ |> put_resp_header("content-disposition", "inline; filename=\"preview.jpg\"")
+ |> send_resp(200, thumbnail_binary)
+ else
+ _ ->
+ send_resp(conn, :failed_dependency, "Can't handle preview.")
+ end
+ end
+
+ defp handle_video_preview(conn, url) do
+ with {:ok, thumbnail_binary} <-
+ MediaHelper.video_framegrab(url) do
+ conn
+ |> put_resp_header("content-type", "image/jpeg")
+ |> put_resp_header("content-disposition", "inline; filename=\"preview.jpg\"")
+ |> send_resp(200, thumbnail_binary)
+ else
+ _ ->
+ send_resp(conn, :failed_dependency, "Can't handle preview.")
+ end
+ end
+
defp thumbnail_max_dimensions(params) do
config = Config.get([:media_preview_proxy], [])
{thumbnail_max_width, thumbnail_max_height}
end
- defp thumbnail_binary(url, body, params) do
- {thumbnail_max_width, thumbnail_max_height} = thumbnail_max_dimensions(params)
-
- with true <- Config.get([:media_preview_proxy, :enable_eimp]),
- {:ok, [type: image_type, width: source_width, height: source_height]} <-
- :eimp.identify(body),
- scale_factor <-
- Enum.max([source_width / thumbnail_max_width, source_height / thumbnail_max_height]),
- {:ok, thumbnail_binary} =
- :eimp.convert(body, image_type, [
- {:scale, {round(source_width / scale_factor), round(source_height / scale_factor)}}
- ]) do
- {:ok, thumbnail_binary}
- else
- _ ->
- mogrify_dimensions = "#{thumbnail_max_width}x#{thumbnail_max_height}"
-
- with {:ok, path} <- MogrifyHelper.store_as_temporary_file(url, body),
- %Mogrify.Image{} <-
- MogrifyHelper.in_place_resize_to_limit(path, mogrify_dimensions),
- {:ok, thumbnail_binary} <- File.read(path),
- _ <- File.rm(path) do
- {:ok, thumbnail_binary}
- else
- _ -> :error
- end
- end
- end
-
- defp handle_preview("image/" <> _ = content_type, %{params: params} = conn, url) do
- with {:ok, %{status: status, body: image_contents}} when status in 200..299 <-
- url
- |> MediaProxy.url()
- |> Tesla.get(opts: [adapter: [timeout: preview_timeout()]]),
- {:ok, thumbnail_binary} <- thumbnail_binary(url, image_contents, params) do
- conn
- |> put_resp_header("content-type", content_type)
- |> send_resp(200, thumbnail_binary)
- else
- {_, %{status: _}} ->
- send_resp(conn, :failed_dependency, "Can't fetch the image.")
-
- {:error, :recv_response_timeout} ->
- send_resp(conn, :failed_dependency, "Downstream timeout.")
-
- _ ->
- send_resp(conn, :failed_dependency, "Can't handle image preview.")
- end
- end
-
- defp handle_preview(content_type, conn, _url) do
- send_resp(conn, :unprocessable_entity, "Unsupported content type: #{content_type}.")
+ defp preview_head_request_timeout do
+ Keyword.get(media_preview_proxy_opts(), :head_request_max_read_duration) ||
+ Keyword.get(media_proxy_opts(), :max_read_duration) ||
+ ReverseProxy.max_read_duration_default()
end
- defp preview_head_request_timeout do
- Config.get([:media_preview_proxy, :proxy_opts, :head_request_max_read_duration]) ||
- preview_timeout()
+ defp media_proxy_opts do
+ Config.get([:media_proxy, :proxy_opts], [])
end
- defp preview_timeout do
- Config.get([:media_preview_proxy, :proxy_opts, :max_read_duration]) ||
- Config.get([:media_proxy, :proxy_opts, :max_read_duration]) ||
- ReverseProxy.max_read_duration_default()
+ defp media_preview_proxy_opts do
+ Config.get([:media_preview_proxy, :proxy_opts], [])
end
end
projects / akkoma / blobdiff