git.squeep.com Git - akkoma/blob - lib/pleroma/web/fallback_redirect_controller.ex

   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Fallback.RedirectController do
   6   use Pleroma.Web, :controller
   7   require Logger
   8   alias Pleroma.User
   9   alias Pleroma.Web.Metadata
  10   alias Pleroma.Web.Preload
  11
  12   def api_not_implemented(conn, _params) do
  13     conn
  14     |> put_status(404)
  15     |> json(%{error: "Not implemented"})
  16   end
  17
  18   def redirector(conn, _params, code \\ 200) do
  19     conn
  20     |> put_resp_content_type("text/html")
  21     |> send_file(code, index_file_path())
  22   end
  23
  24   def redirector_with_meta(conn, %{"maybe_nickname_or_id" => maybe_nickname_or_id} = params) do
  25     with %User{} = user <- User.get_cached_by_nickname_or_id(maybe_nickname_or_id) do
  26       redirector_with_meta(conn, %{user: user})
  27     else
  28       nil ->
  29         redirector(conn, params)
  30     end
  31   end
  32
  33   def redirector_with_meta(conn, params) do
  34     {:ok, index_content} = File.read(index_file_path())
  35
  36     tags = build_tags(conn, params)
  37     preloads = preload_data(conn, params)
  38
  39     response =
  40       index_content
  41       |> String.replace("<!--server-generated-meta-->", tags)
  42       |> String.replace("<!--server-generated-initial-data-->", preloads)
  43
  44     conn
  45     |> put_resp_content_type("text/html")
  46     |> send_resp(200, response)
  47   end
  48
  49   def redirector_with_preload(conn, %{"path" => ["pleroma", "admin"]}) do
  50     redirect(conn, to: "/pleroma/admin/")
  51   end
  52
  53   def redirector_with_preload(conn, params) do
  54     {:ok, index_content} = File.read(index_file_path())
  55     preloads = preload_data(conn, params)
  56
  57     response =
  58       index_content
  59       |> String.replace("<!--server-generated-initial-data-->", preloads)
  60
  61     conn
  62     |> put_resp_content_type("text/html")
  63     |> send_resp(200, response)
  64   end
  65
  66   def registration_page(conn, params) do
  67     redirector(conn, params)
  68   end
  69
  70   def empty(conn, _params) do
  71     conn
  72     |> put_status(204)
  73     |> text("")
  74   end
  75
  76   defp index_file_path do
  77     Pleroma.Plugs.InstanceStatic.file_path("index.html")
  78   end
  79
  80   defp build_tags(conn, params) do
  81     try do
  82       Metadata.build_tags(params)
  83     rescue
  84       e ->
  85         Logger.error(
  86           "Metadata rendering for #{conn.request_path} failed.\n" <>
  87             Exception.format(:error, e, __STACKTRACE__)
  88         )
  89
  90         ""
  91     end
  92   end
  93
  94   defp preload_data(conn, params) do
  95     try do
  96       Preload.build_tags(conn, params)
  97     rescue
  98       e ->
  99         Logger.error(
 100           "Preloading for #{conn.request_path} failed.\n" <>
 101             Exception.format(:error, e, __STACKTRACE__)
 102         )
 103
 104         ""
 105     end
 106   end
 107 end