Merge branch 'develop' into activation-meta

[akkoma] / lib / pleroma / web / media_proxy / media_proxy_controller.ex

diff --git a/lib/pleroma/web/media_proxy/media_proxy_controller.ex b/lib/pleroma/web/media_proxy/media_proxy_controller.ex
index 1e9520d462c36fc29da22698e87fc533db0f237b..9a64b0ef35776f9b2a3c189481fed15c30ae698a 100644 (file)
--- a/lib/pleroma/web/media_proxy/media_proxy_controller.ex
+++ b/lib/pleroma/web/media_proxy/media_proxy_controller.ex
@@ -1,9 +1,10 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MediaProxy.MediaProxyController do
   use Pleroma.Web, :controller
+
   alias Pleroma.ReverseProxy
   alias Pleroma.Web.MediaProxy
 
@@ -13,10 +14,11 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
     with config <- Pleroma.Config.get([:media_proxy], []),
          true <- Keyword.get(config, :enabled, false),
          {:ok, url} <- MediaProxy.decode_url(sig64, url64),
+         {_, false} <- {:in_banned_urls, MediaProxy.in_banned_urls(url)},
          :ok <- filename_matches(params, conn.request_path, url) do
       ReverseProxy.call(conn, url, Keyword.get(config, :proxy_opts, @default_proxy_opts))
     else
-      false ->
+      error when error in [false, {:in_banned_urls, true}] ->
         send_resp(conn, 404, Plug.Conn.Status.reason_phrase(404))
 
       {:error, :invalid_signature} ->
@@ -30,7 +32,7 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
   def filename_matches(%{"filename" => _} = _, path, url) do
     filename = MediaProxy.filename(url)
 
-    if filename && Path.basename(path) != filename do
+    if filename && does_not_match(path, filename) do
       {:wrong_filename, filename}
     else
       :ok
@@ -38,4 +40,9 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
   end
 
   def filename_matches(_, _, _), do: :ok
+
+  defp does_not_match(path, filename) do
+    basename = Path.basename(path)
+    basename != filename and URI.decode(basename) != filename and URI.encode(basename) != filename
+  end
 end