1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.Plugs.FrontendStatic do
6 require Pleroma.Constants
9 This is a shim to call `Plug.Static` but with runtime `from` configuration`. It dispatches to the different frontends.
13 def file_path(path, frontend_type \\ :primary) do
14 if configuration = Pleroma.Config.get([:frontends, frontend_type]) do
15 instance_static_path = Pleroma.Config.get([:instance, :static_dir], "instance/static")
20 configuration["name"],
31 |> Keyword.put(:from, "__unconfigured_frontend_static_plug")
33 |> Map.put(:frontend_type, opts[:frontend_type])
34 |> Map.put(:if, Keyword.get(opts, :if, true))
37 def call(conn, opts) do
38 with false <- api_route?(conn.path_info),
39 false <- invalid_path?(conn.path_info),
40 true <- enabled?(opts[:if]),
41 frontend_type <- Map.get(opts, :frontend_type, :primary),
42 path when not is_nil(path) <- file_path("", frontend_type) do
43 call_static(conn, opts, path)
50 defp enabled?(if_opt) when is_function(if_opt), do: if_opt.()
51 defp enabled?(true), do: true
52 defp enabled?(_), do: false
54 defp invalid_path?(list) do
55 invalid_path?(list, :binary.compile_pattern(["/", "\\", ":", "\0"]))
58 defp invalid_path?([h | _], _match) when h in [".", "..", ""], do: true
59 defp invalid_path?([h | t], match), do: String.contains?(h, match) or invalid_path?(t)
60 defp invalid_path?([], _match), do: false
62 defp api_route?([]), do: false
64 defp api_route?([h | t]) do
65 api_routes = Pleroma.Web.Router.get_api_routes()
66 if h in api_routes, do: true, else: api_route?(t)
69 defp call_static(conn, opts, from) do
70 opts = Map.put(opts, :from, from)
71 Plug.Static.call(conn, opts)