git.squeep.com Git - akkoma/blob - lib/pleroma/upload.ex

   1 defmodule Pleroma.Upload do
   2   alias Ecto.UUID
   3   alias Pleroma.Web
   4
   5   def store(%Plug.Upload{} = file) do
   6     uuid = UUID.generate()
   7     upload_folder = Path.join(upload_path(), uuid)
   8     File.mkdir_p!(upload_folder)
   9     result_file = Path.join(upload_folder, file.filename)
  10     File.cp!(file.path, result_file)
  11
  12     # fix content type on some image uploads
  13     content_type =
  14       if file.content_type in [nil, "application/octet-stream"] do
  15         get_content_type(file.path)
  16       else
  17         file.content_type
  18       end
  19
  20     %{
  21       "type" => "Image",
  22       "url" => [
  23         %{
  24           "type" => "Link",
  25           "mediaType" => content_type,
  26           "href" => url_for(Path.join(uuid, :cow_uri.urlencode(file.filename)))
  27         }
  28       ],
  29       "name" => file.filename,
  30       "uuid" => uuid
  31     }
  32   end
  33
  34   def store(%{"img" => "data:image/" <> image_data}) do
  35     parsed = Regex.named_captures(~r/(?<filetype>jpeg|png|gif);base64,(?<data>.*)/, image_data)
  36     data = Base.decode64!(parsed["data"])
  37     uuid = UUID.generate()
  38     upload_folder = Path.join(upload_path(), uuid)
  39     File.mkdir_p!(upload_folder)
  40     filename = Base.encode16(:crypto.hash(:sha256, data)) <> ".#{parsed["filetype"]}"
  41     result_file = Path.join(upload_folder, filename)
  42
  43     File.write!(result_file, data)
  44
  45     content_type = "image/#{parsed["filetype"]}"
  46
  47     %{
  48       "type" => "Image",
  49       "url" => [
  50         %{
  51           "type" => "Link",
  52           "mediaType" => content_type,
  53           "href" => url_for(Path.join(uuid, :cow_uri.urlencode(filename)))
  54         }
  55       ],
  56       "name" => filename,
  57       "uuid" => uuid
  58     }
  59   end
  60
  61   def upload_path do
  62     settings = Application.get_env(:pleroma, Pleroma.Upload)
  63     Keyword.fetch!(settings, :uploads)
  64   end
  65
  66   defp url_for(file) do
  67     "#{Web.base_url()}/media/#{file}"
  68   end
  69
  70   def get_content_type(file) do
  71     match =
  72       File.open(file, [:read], fn f ->
  73         case IO.binread(f, 8) do
  74           <<0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A>> ->
  75             "image/png"
  76
  77           <<0x47, 0x49, 0x46, 0x38, _, 0x61, _, _>> ->
  78             "image/gif"
  79
  80           <<0xFF, 0xD8, 0xFF, _, _, _, _, _>> ->
  81             "image/jpeg"
  82
  83           <<0x1A, 0x45, 0xDF, 0xA3, _, _, _, _>> ->
  84             "video/webm"
  85
  86           <<0x00, 0x00, 0x00, _, 0x66, 0x74, 0x79, 0x70>> ->
  87             "video/mp4"
  88
  89           <<0x49, 0x44, 0x33, _, _, _, _, _>> ->
  90             "audio/mpeg"
  91
  92           <<0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00>> ->
  93             "audio/ogg"
  94
  95           <<0x52, 0x49, 0x46, 0x46, _, _, _, _>> ->
  96             "audio/wav"
  97
  98           _ ->
  99             "application/octet-stream"
 100         end
 101       end)
 102
 103     case match do
 104       {:ok, type} -> type
 105       _e -> "application/octet-stream"
 106     end
 107   end
 108 end