Merge remote-tracking branch 'remotes/origin/develop' into feature/object-hashtags...

[akkoma] / lib / pleroma / web / plugs / frontend_static.ex

diff --git a/lib/pleroma/web/plugs/frontend_static.ex b/lib/pleroma/web/plugs/frontend_static.ex
index ceb10dcf87a253431f77fdf5a38d38257cd949f9..eb385e94dfc97020acd05ba0b3d988fa9e1007a9 100644 (file)
--- a/lib/pleroma/web/plugs/frontend_static.ex
+++ b/lib/pleroma/web/plugs/frontend_static.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Plugs.FrontendStatic do
@@ -10,6 +10,8 @@ defmodule Pleroma.Web.Plugs.FrontendStatic do
   """
   @behaviour Plug
 
+  @api_routes Pleroma.Web.get_api_routes()
+
   def file_path(path, frontend_type \\ :primary) do
     if configuration = Pleroma.Config.get([:frontends, frontend_type]) do
       instance_static_path = Pleroma.Config.get([:instance, :static_dir], "instance/static")
@@ -34,22 +36,31 @@ defmodule Pleroma.Web.Plugs.FrontendStatic do
   end
 
   def call(conn, opts) do
-    frontend_type = Map.get(opts, :frontend_type, :primary)
-    path = file_path("", frontend_type)
-
-    if path do
-      conn
-      |> call_static(opts, path)
+    with false <- api_route?(conn.path_info),
+         false <- invalid_path?(conn.path_info),
+         frontend_type <- Map.get(opts, :frontend_type, :primary),
+         path when not is_nil(path) <- file_path("", frontend_type) do
+      call_static(conn, opts, path)
     else
-      conn
+      _ ->
+        conn
     end
   end
 
-  defp call_static(conn, opts, from) do
-    opts =
-      opts
-      |> Map.put(:from, from)
+  defp invalid_path?(list) do
+    invalid_path?(list, :binary.compile_pattern(["/", "\\", ":", "\0"]))
+  end
 
+  defp invalid_path?([h | _], _match) when h in [".", "..", ""], do: true
+  defp invalid_path?([h | t], match), do: String.contains?(h, match) or invalid_path?(t)
+  defp invalid_path?([], _match), do: false
+
+  defp api_route?([h | _]) when h in @api_routes, do: true
+  defp api_route?([_ | t]), do: api_route?(t)
+  defp api_route?([]), do: false
+
+  defp call_static(conn, opts, from) do
+    opts = Map.put(opts, :from, from)
     Plug.Static.call(conn, opts)
   end
 end