Merge branch 'fix/credo-issues' into 'develop'

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

diff --git a/lib/pleroma/web/media_proxy/controller.ex b/lib/pleroma/web/media_proxy/controller.ex
index d0b92d0c10445ccb2dc9ed6b1b52f8f2f8e3b0a1..c0552d89f4bd98ea09d2ad047ba974c02f8b3846 100644 (file)
--- a/lib/pleroma/web/media_proxy/controller.ex
+++ b/lib/pleroma/web/media_proxy/controller.ex
@@ -1,14 +1,18 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.MediaProxy.MediaProxyController do
   use Pleroma.Web, :controller
-  alias Pleroma.{Web.MediaProxy, ReverseProxy}
+  alias Pleroma.ReverseProxy
+  alias Pleroma.Web.MediaProxy
 
   @default_proxy_opts [max_body_length: 25 * 1_048_576, http: [follow_redirect: true]]
 
-  def remote(conn, params = %{"sig" => sig64, "url" => url64}) do
+  def remote(conn, %{"sig" => sig64, "url" => url64} = params) do
     with config <- Pleroma.Config.get([:media_proxy], []),
          true <- Keyword.get(config, :enabled, false),
          {:ok, url} <- MediaProxy.decode_url(sig64, url64),
-         filename <- Path.basename(URI.parse(url).path),
          :ok <- filename_matches(Map.has_key?(params, "filename"), conn.request_path, url) do
       ReverseProxy.call(conn, url, Keyword.get(config, :proxy_opts, @default_proxy_opts))
     else
@@ -24,11 +28,17 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
   end
 
   def filename_matches(has_filename, path, url) do
-    filename = MediaProxy.filename(url)
+    filename =
+      url
+      |> MediaProxy.filename()
+      |> URI.decode()
+
+    path = URI.decode(path)
 
-    cond do
-      has_filename && filename && Path.basename(path) != filename -> {:wrong_filename, filename}
-      true -> :ok
+    if has_filename && filename && Path.basename(path) != filename do
+      {:wrong_filename, filename}
+    else
+      :ok
     end
   end
 end