1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Upload.Filter.Dedupe do
6 @behaviour Pleroma.Upload.Filter
9 def filter(%Upload{name: name, tempfile: tempfile} = upload) do
16 :crypto.hash(:sha256, File.read!(tempfile))
17 |> Base.encode16(case: :lower)
19 filename = shasum <> "." <> extension
20 {:ok, %Upload{upload | id: shasum, path: filename}}
23 def filter(_), do: :ok