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, should_dedupe) do
   6     content_type = get_content_type(file.path)
   7     uuid = get_uuid(file, should_dedupe)
   8     name = get_name(file, uuid, content_type, should_dedupe)
   9     upload_folder = get_upload_path(uuid, should_dedupe)
  10     url_path = get_url(name, uuid, should_dedupe)
  11
  12     File.mkdir_p!(upload_folder)
  13     result_file = Path.join(upload_folder, name)
  14
  15     if File.exists?(result_file) do
  16       File.rm!(file.path)
  17     else
  18       File.cp!(file.path, result_file)
  19     end
  20
  21     %{
  22       "type" => "Image",
  23       "url" => [
  24         %{
  25           "type" => "Link",
  26           "mediaType" => content_type,
  27           "href" => url_path
  28         }
  29       ],
  30       "name" => name
  31     }
  32   end
  33
  34   def store(%{"img" => "data:image/" <> image_data}, should_dedupe) do
  35     parsed = Regex.named_captures(~r/(?<filetype>jpeg|png|gif);base64,(?<data>.*)/, image_data)
  36     data = Base.decode64!(parsed["data"], ignore: :whitespace)
  37     uuid = UUID.generate()
  38     uuidpath = Path.join(upload_path(), uuid)
  39     uuid = UUID.generate()
  40
  41     File.mkdir_p!(upload_path())
  42
  43     File.write!(uuidpath, data)
  44
  45     content_type = get_content_type(uuidpath)
  46
  47     name =
  48       create_name(
  49         String.downcase(Base.encode16(:crypto.hash(:sha256, data))),
  50         parsed["filetype"],
  51         content_type
  52       )
  53
  54     upload_folder = get_upload_path(uuid, should_dedupe)
  55     url_path = get_url(name, uuid, should_dedupe)
  56
  57     File.mkdir_p!(upload_folder)
  58     result_file = Path.join(upload_folder, name)
  59
  60     if should_dedupe do
  61       if !File.exists?(result_file) do
  62         File.rename(uuidpath, result_file)
  63       else
  64         File.rm!(uuidpath)
  65       end
  66     else
  67       File.rename(uuidpath, result_file)
  68     end
  69
  70     %{
  71       "type" => "Image",
  72       "url" => [
  73         %{
  74           "type" => "Link",
  75           "mediaType" => content_type,
  76           "href" => url_path
  77         }
  78       ],
  79       "name" => name
  80     }
  81   end
  82
  83   def strip_exif_data(file) do
  84     settings = Application.get_env(:pleroma, Pleroma.Upload)
  85     @do_strip = Keyword.fetch!(settings, :strip_exif)
  86     if @do_strip == true do
  87         Mogrify.open(file) |> Mogrify.custom("strip") |> Mogrify.save(in_place: true)
  88     end
  89   end
  90
  91   def upload_path do
  92     settings = Application.get_env(:pleroma, Pleroma.Upload)
  93     Keyword.fetch!(settings, :uploads)
  94   end
  95
  96   defp create_name(uuid, ext, type) do
  97     case type do
  98       "application/octet-stream" ->
  99         String.downcase(Enum.join([uuid, ext], "."))
 100
 101       "audio/mpeg" ->
 102         String.downcase(Enum.join([uuid, "mp3"], "."))
 103
 104       _ ->
 105         String.downcase(Enum.join([uuid, List.last(String.split(type, "/"))], "."))
 106     end
 107   end
 108
 109   defp get_uuid(file, should_dedupe) do
 110     if should_dedupe do
 111       Base.encode16(:crypto.hash(:sha256, File.read!(file.path)))
 112     else
 113       UUID.generate()
 114     end
 115   end
 116
 117   defp get_name(file, uuid, type, should_dedupe) do
 118     if should_dedupe do
 119       create_name(uuid, List.last(String.split(file.filename, ".")), type)
 120     else
 121       unless String.contains?(file.filename, ".") do
 122         case type do
 123           "image/png" -> file.filename <> ".png"
 124           "image/jpeg" -> file.filename <> ".jpg"
 125           "image/gif" -> file.filename <> ".gif"
 126           "video/webm" -> file.filename <> ".webm"
 127           "video/mp4" -> file.filename <> ".mp4"
 128           "audio/mpeg" -> file.filename <> ".mp3"
 129           "audio/ogg" -> file.filename <> ".ogg"
 130           "audio/wav" -> file.filename <> ".wav"
 131           _ -> file.filename
 132         end
 133       else
 134         file.filename
 135       end
 136     end
 137   end
 138
 139   defp get_upload_path(uuid, should_dedupe) do
 140     if should_dedupe do
 141       upload_path()
 142     else
 143       Path.join(upload_path(), uuid)
 144     end
 145   end
 146
 147   defp get_url(name, uuid, should_dedupe) do
 148     if should_dedupe do
 149       url_for(:cow_uri.urlencode(name))
 150     else
 151       url_for(Path.join(uuid, :cow_uri.urlencode(name)))
 152     end
 153   end
 154
 155   defp url_for(file) do
 156     "#{Web.base_url()}/media/#{file}"
 157   end
 158
 159   def get_content_type(file) do
 160     match =
 161       File.open(file, [:read], fn f ->
 162         case IO.binread(f, 8) do
 163           <<0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A>> ->
 164             "image/png"
 165
 166           <<0x47, 0x49, 0x46, 0x38, _, 0x61, _, _>> ->
 167             "image/gif"
 168
 169           <<0xFF, 0xD8, 0xFF, _, _, _, _, _>> ->
 170             "image/jpeg"
 171
 172           <<0x1A, 0x45, 0xDF, 0xA3, _, _, _, _>> ->
 173             "video/webm"
 174
 175           <<0x00, 0x00, 0x00, _, 0x66, 0x74, 0x79, 0x70>> ->
 176             "video/mp4"
 177
 178           <<0x49, 0x44, 0x33, _, _, _, _, _>> ->
 179             "audio/mpeg"
 180
 181           <<255, 251, _, 68, 0, 0, 0, 0>> ->
 182             "audio/mpeg"
 183
 184           <<0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00>> ->
 185             "audio/ogg"
 186
 187           <<0x52, 0x49, 0x46, 0x46, _, _, _, _>> ->
 188             "audio/wav"
 189
 190           _ ->
 191             "application/octet-stream"
 192         end
 193       end)
 194
 195     case match do
 196       {:ok, type} -> type
 197       _e -> "application/octet-stream"
 198     end
 199   end
 200 end