distraction.party/lib/pleroma/upload.ex
2018-03-30 15:01:53 +02:00

108 lines
2.7 KiB
Elixir

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)
# fix content type on some image uploads
content_type =
if file.content_type in [nil, "application/octet-stream"] do
get_content_type(file.path)
else
file.content_type
end
%{
"type" => "Image",
"url" => [
%{
"type" => "Link",
"mediaType" => content_type,
"href" => url_for(Path.join(uuid, :cow_uri.urlencode(file.filename)))
}
],
"name" => file.filename,
"uuid" => uuid
}
end
def store(%{"img" => "data:image/" <> image_data}) 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, :cow_uri.urlencode(filename)))
}
],
"name" => filename,
"uuid" => uuid
}
end
defp upload_path do
settings = Application.get_env(:pleroma, Pleroma.Upload)
Keyword.fetch!(settings, :uploads)
end
defp url_for(file) do
"#{Web.base_url()}/media/#{file}"
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"
<<0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00>> ->
"audio/ogg"
<<0x52, 0x49, 0x46, 0x46, _, _, _, _>> ->
"audio/wav"
_ ->
"application/octet-stream"
end
end)
case match do
{:ok, type} -> type
_e -> "application/octet-stream"
end
end
end