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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.MastodonAPI.InstanceView do
   6   use Pleroma.Web, :view
   7
   8   alias Pleroma.Config
   9   alias Pleroma.Web.ActivityPub.MRF
  10
  11   @mastodon_api_level "2.7.2"
  12
  13   def render("show.json", _) do
  14     instance = Config.get(:instance)
  15
  16     %{
  17       uri: Pleroma.Web.Endpoint.url(),
  18       title: Keyword.get(instance, :name),
  19       description: Keyword.get(instance, :description),
  20       version: "#{@mastodon_api_level} (compatible; #{Pleroma.Application.named_version()})",
  21       email: Keyword.get(instance, :email),
  22       urls: %{
  23         streaming_api: Pleroma.Web.Endpoint.websocket_url()
  24       },
  25       stats: Pleroma.Stats.get_stats(),
  26       thumbnail: Pleroma.Web.Endpoint.url() <> Keyword.get(instance, :instance_thumbnail),
  27       languages: ["en"],
  28       registrations: Keyword.get(instance, :registrations_open),
  29       approval_required: Keyword.get(instance, :account_approval_required),
  30       # Extra (not present in Mastodon):
  31       max_toot_chars: Keyword.get(instance, :limit),
  32       poll_limits: Keyword.get(instance, :poll_limits),
  33       upload_limit: Keyword.get(instance, :upload_limit),
  34       avatar_upload_limit: Keyword.get(instance, :avatar_upload_limit),
  35       background_upload_limit: Keyword.get(instance, :background_upload_limit),
  36       banner_upload_limit: Keyword.get(instance, :banner_upload_limit),
  37       background_image: Pleroma.Web.Endpoint.url() <> Keyword.get(instance, :background_image),
  38       chat_limit: Keyword.get(instance, :chat_limit),
  39       description_limit: Keyword.get(instance, :description_limit),
  40       pleroma: %{
  41         metadata: %{
  42           account_activation_required: Keyword.get(instance, :account_activation_required),
  43           features: features(),
  44           federation: federation(),
  45           fields_limits: fields_limits(),
  46           post_formats: Config.get([:instance, :allowed_post_formats])
  47         },
  48         stats: %{mau: Pleroma.User.active_user_count()},
  49         vapid_public_key: Keyword.get(Pleroma.Web.Push.vapid_config(), :public_key)
  50       }
  51     }
  52   end
  53
  54   def features do
  55     [
  56       "pleroma_api",
  57       "mastodon_api",
  58       "mastodon_api_streaming",
  59       "polls",
  60       "pleroma_explicit_addressing",
  61       "shareable_emoji_packs",
  62       "multifetch",
  63       "pleroma:api/v1/notifications:include_types_filter",
  64       if Config.get([:media_proxy, :enabled]) do
  65         "media_proxy"
  66       end,
  67       if Config.get([:gopher, :enabled]) do
  68         "gopher"
  69       end,
  70       if Config.get([:chat, :enabled]) do
  71         "chat"
  72       end,
  73       if Config.get([:instance, :allow_relay]) do
  74         "relay"
  75       end,
  76       if Config.get([:instance, :safe_dm_mentions]) do
  77         "safe_dm_mentions"
  78       end,
  79       "pleroma_emoji_reactions",
  80       "pleroma_chat_messages"
  81     ]
  82     |> Enum.filter(& &1)
  83   end
  84
  85   def federation do
  86     quarantined = Config.get([:instance, :quarantined_instances], [])
  87
  88     if Config.get([:mrf, :transparency]) do
  89       {:ok, data} = MRF.describe()
  90
  91       data
  92       |> Map.merge(%{quarantined_instances: quarantined})
  93     else
  94       %{}
  95     end
  96     |> Map.put(:enabled, Config.get([:instance, :federating]))
  97   end
  98
  99   def fields_limits do
 100     %{
 101       max_fields: Config.get([:instance, :max_account_fields]),
 102       max_remote_fields: Config.get([:instance, :max_remote_account_fields]),
 103       name_length: Config.get([:instance, :account_field_name_length]),
 104       value_length: Config.get([:instance, :account_field_value_length])
 105     }
 106   end
 107 end