From e9982c521b187136fd197d11a1e5d9b022da5e38 Mon Sep 17 00:00:00 2001
From: href <href@random.sh>
Date: Fri, 30 Nov 2018 19:33:34 +0100
Subject: Upload filter: anonymize filename

It replaces the original filename with a randomly generated string.
---
 lib/pleroma/upload/filter/anonymize_filename.ex | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 lib/pleroma/upload/filter/anonymize_filename.ex

(limited to 'lib')

diff --git a/lib/pleroma/upload/filter/anonymize_filename.ex b/lib/pleroma/upload/filter/anonymize_filename.ex
new file mode 100644
index 000000000..a83e764e5
--- /dev/null
+++ b/lib/pleroma/upload/filter/anonymize_filename.ex
@@ -0,0 +1,10 @@
+defmodule Pleroma.Upload.Filter.AnonymizeFilename do
+  @moduledoc "Replaces the original filename with a randomly generated string."
+  @behaviour Pleroma.Upload.Filter
+
+  def filter(upload) do
+    extension = List.last(String.split(upload.name, "."))
+    string = Base.url_encode64(:crypto.strong_rand_bytes(10), padding: false)
+    {:ok, %Pleroma.Upload{upload | name: string <> "." <> extension}}
+  end
+end
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