Merge remote-tracking branch 'remotes/origin/develop' into 2168-media-preview-proxy

[akkoma] / lib / pleroma / mime.ex

diff --git a/lib/pleroma/mime.ex b/lib/pleroma/mime.ex
index 2cb3d8bd15f940ecaa16f8e248c44035486054c8..6ee055f500083492549930801cc3948266b287d1 100644 (file)
--- a/lib/pleroma/mime.ex
+++ b/lib/pleroma/mime.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.MIME do
   @moduledoc """
   Returns the mime-type of a binary and optionally a normalized file-name.
@@ -5,7 +9,7 @@ defmodule Pleroma.MIME do
   @default "application/octet-stream"
   @read_bytes 35
 
-  @spec file_mime_type(String.t()) ::
+  @spec file_mime_type(String.t(), String.t()) ::
           {:ok, content_type :: String.t(), filename :: String.t()} | {:error, any()} | :error
   def file_mime_type(path, filename) do
     with {:ok, content_type} <- file_mime_type(path),
@@ -98,10 +102,18 @@ defmodule Pleroma.MIME do
     "audio/ogg"
   end
 
-  defp check_mime_type(<<0x52, 0x49, 0x46, 0x46, _::binary>>) do
+  defp check_mime_type(<<"RIFF", _::binary-size(4), "WAVE", _::binary>>) do
     "audio/wav"
   end
 
+  defp check_mime_type(<<"RIFF", _::binary-size(4), "WEBP", _::binary>>) do
+    "image/webp"
+  end
+
+  defp check_mime_type(<<"RIFF", _::binary-size(4), "AVI.", _::binary>>) do
+    "video/avi"
+  end
+
   defp check_mime_type(_) do
     @default
   end