defmodule Pleroma.Upload do
alias Ecto.UUID
- alias Pleroma.Web
- def store(%Plug.Upload{} = file) do
- uuid = UUID.generate
- upload_folder = Path.join(upload_path(), uuid)
- File.mkdir_p!(upload_folder)
- result_file = Path.join(upload_folder, file.filename)
- File.cp!(file.path, result_file)
-
- %{
- "type" => "Image",
- "url" => [%{
- "type" => "Link",
- "mediaType" => file.content_type,
- "href" => url_for(Path.join(uuid, file.filename))
- }],
- "name" => file.filename,
- "uuid" => uuid
- }
- end
-
- def store(%{"img" => "data:image/" <> image_data}) do
+
+ def check_file_size(path, nil), do: true
+
+ def check_file_size(path, size_limit) do
+ {:ok, %{size: size}} = File.stat(path)
+ size <= size_limit
+ end
+
+ def store(file, should_dedupe, size_limit \\ nil)
+
+ def store(%Plug.Upload{} = file, should_dedupe, size_limit) do
+ content_type = get_content_type(file.path)
+
+ with uuid <- get_uuid(file, should_dedupe),
+ name <- get_name(file, uuid, content_type, should_dedupe),
+ true <- check_file_size(file.path, size_limit) do
+ strip_exif_data(content_type, file.path)
+
+ {:ok, url_path} = uploader().put_file(name, uuid, file.path, content_type, should_dedupe)
+
+ %{
+ "type" => "Document",
+ "url" => [
+ %{
+ "type" => "Link",
+ "mediaType" => content_type,
+ "href" => url_path
+ }
+ ],
+ "name" => name
+ }
+ else
+ _e -> nil
+ end
+ end
+
+ def store(%{"img" => "data:image/" <> image_data}, should_dedupe, size_limit) do
parsed = Regex.named_captures(~r/(?<filetype>jpeg|png|gif);base64,(?<data>.*)/, image_data)
- data = Base.decode64!(parsed["data"])
- uuid = UUID.generate
- upload_folder = Path.join(upload_path(), uuid)
- File.mkdir_p!(upload_folder)
- filename = Base.encode16(:crypto.hash(:sha256, data)) <> ".#{parsed["filetype"]}"
- result_file = Path.join(upload_folder, filename)
-
- File.write!(result_file, data)
-
- content_type = "image/#{parsed["filetype"]}"
-
- %{
- "type" => "Image",
- "url" => [%{
- "type" => "Link",
- "mediaType" => content_type,
- "href" => url_for(Path.join(uuid, filename))
- }],
- "name" => filename,
- "uuid" => uuid
- }
- end
-
- defp upload_path do
+ data = Base.decode64!(parsed["data"], ignore: :whitespace)
+
+ with tmp_path <- tempfile_for_image(data),
+ uuid <- UUID.generate(),
+ true <- check_file_size(tmp_path, size_limit) do
+ content_type = get_content_type(tmp_path)
+ strip_exif_data(content_type, tmp_path)
+
+ name =
+ create_name(
+ String.downcase(Base.encode16(:crypto.hash(:sha256, data))),
+ parsed["filetype"],
+ content_type
+ )
+
+ {:ok, url_path} = uploader().put_file(name, uuid, tmp_path, content_type, should_dedupe)
+
+ %{
+ "type" => "Image",
+ "url" => [
+ %{
+ "type" => "Link",
+ "mediaType" => content_type,
+ "href" => url_path
+ }
+ ],
+ "name" => name
+ }
+ else
+ _e -> nil
+ end
+ end
+
+ @doc """
+ Creates a tempfile using the Plug.Upload Genserver which cleans them up
+ automatically.
+ """
+ def tempfile_for_image(data) do
+ {:ok, tmp_path} = Plug.Upload.random_file("profile_pics")
+ {:ok, tmp_file} = File.open(tmp_path, [:write, :raw, :binary])
+ IO.binwrite(tmp_file, data)
+
+ tmp_path
+ end
+
+ def strip_exif_data(content_type, file) do
settings = Application.get_env(:pleroma, Pleroma.Upload)
- Keyword.fetch!(settings, :uploads)
+ do_strip = Keyword.fetch!(settings, :strip_exif)
+ [filetype, _ext] = String.split(content_type, "/")
+
+ if filetype == "image" and do_strip == true do
+ Mogrify.open(file) |> Mogrify.custom("strip") |> Mogrify.save(in_place: true)
+ end
+ end
+
+ defp create_name(uuid, ext, type) do
+ case type do
+ "application/octet-stream" ->
+ String.downcase(Enum.join([uuid, ext], "."))
+
+ "audio/mpeg" ->
+ String.downcase(Enum.join([uuid, "mp3"], "."))
+
+ _ ->
+ String.downcase(Enum.join([uuid, List.last(String.split(type, "/"))], "."))
+ end
+ end
+
+ defp get_uuid(file, should_dedupe) do
+ if should_dedupe do
+ Base.encode16(:crypto.hash(:sha256, File.read!(file.path)))
+ else
+ UUID.generate()
+ end
+ end
+
+ defp get_name(file, uuid, type, should_dedupe) do
+ if should_dedupe do
+ create_name(uuid, List.last(String.split(file.filename, ".")), type)
+ else
+ parts = String.split(file.filename, ".")
+
+ new_filename =
+ if length(parts) > 1 do
+ Enum.drop(parts, -1) |> Enum.join(".")
+ else
+ Enum.join(parts)
+ end
+
+ case type do
+ "application/octet-stream" -> file.filename
+ "audio/mpeg" -> new_filename <> ".mp3"
+ "image/jpeg" -> new_filename <> ".jpg"
+ _ -> Enum.join([new_filename, String.split(type, "/") |> List.last()], ".")
+ end
+ end
+ end
+
+ def get_content_type(file) do
+ match =
+ File.open(file, [:read], fn f ->
+ case IO.binread(f, 8) do
+ <<0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A>> ->
+ "image/png"
+
+ <<0x47, 0x49, 0x46, 0x38, _, 0x61, _, _>> ->
+ "image/gif"
+
+ <<0xFF, 0xD8, 0xFF, _, _, _, _, _>> ->
+ "image/jpeg"
+
+ <<0x1A, 0x45, 0xDF, 0xA3, _, _, _, _>> ->
+ "video/webm"
+
+ <<0x00, 0x00, 0x00, _, 0x66, 0x74, 0x79, 0x70>> ->
+ "video/mp4"
+
+ <<0x49, 0x44, 0x33, _, _, _, _, _>> ->
+ "audio/mpeg"
+
+ <<255, 251, _, 68, 0, 0, 0, 0>> ->
+ "audio/mpeg"
+
+ <<0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00>> ->
+ case IO.binread(f, 27) do
+ <<_::size(160), 0x80, 0x74, 0x68, 0x65, 0x6F, 0x72, 0x61>> ->
+ "video/ogg"
+
+ _ ->
+ "audio/ogg"
+ end
+
+ <<0x52, 0x49, 0x46, 0x46, _, _, _, _>> ->
+ "audio/wav"
+
+ _ ->
+ "application/octet-stream"
+ end
+ end)
+
+ case match do
+ {:ok, type} -> type
+ _e -> "application/octet-stream"
+ end
end
- defp url_for(file) do
- "#{Web.base_url()}/media/#{file}"
+ defp uploader() do
+ Pleroma.Config.get!([Pleroma.Upload, :uploader])
end
end
projects / akkoma / blobdiff