akkoma/lib/pleroma/upload.ex

90 lines
2.4 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 == "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
# PNG: 89 50 4E 47 0D 0A 1A 0A
# GIF: 47 49 46 38 37 61
# GIF: 47 49 46 38 39 61
# JPEG: FF D8 FF DB
# JPEG: FF D8 FF E0 ?? ?? 4A 46 49 46 00 01
# JPEG: FF D8 FF E1 ?? ?? 45 78 69 66 00 00
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"
_ ->
"application/octet-stream"
end
end)
case match do
{:ok, type} -> type
_e -> "application/octet-stream"
end
end
end