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