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   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.Nodeinfo.NodeinfoController do
   6   use Pleroma.Web, :controller
   7
   8   alias Pleroma.Config
   9   alias Pleroma.Stats
  10   alias Pleroma.User
  11   alias Pleroma.Web
  12   alias Pleroma.Web.ActivityPub.MRF
  13   alias Pleroma.Web.Federator.Publisher
  14
  15   def schemas(conn, _params) do
  16     response = %{
  17       links: [
  18         %{
  19           rel: "http://nodeinfo.diaspora.software/ns/schema/2.0",
  20           href: Web.base_url() <> "/nodeinfo/2.0.json"
  21         },
  22         %{
  23           rel: "http://nodeinfo.diaspora.software/ns/schema/2.1",
  24           href: Web.base_url() <> "/nodeinfo/2.1.json"
  25         }
  26       ]
  27     }
  28
  29     json(conn, response)
  30   end
  31
  32   # returns a nodeinfo 2.0 map, since 2.1 just adds a repository field
  33   # under software.
  34   def raw_nodeinfo do
  35     stats = Stats.get_stats()
  36     exclusions = Config.get([:instance, :mrf_transparency_exclusions], [])
  37
  38     quarantined =
  39       Config.get([:instance, :quarantined_instances], [])
  40       |> Enum.filter(fn x -> !Enum.member?(exclusions, x) end)
  41
  42     staff_accounts =
  43       User.all_superusers()
  44       |> Enum.map(fn u -> u.ap_id end)
  45       |> Enum.filter(fn u -> not Enum.member?(Config.get([:instance, :staff_transparency]), u) end)
  46
  47     federation_response =
  48       if Config.get([:instance, :mrf_transparency]) do
  49         {:ok, data} = MRF.describe()
  50
  51         data
  52         |> Map.merge(%{quarantined_instances: quarantined})
  53       else
  54         %{}
  55       end
  56       |> Map.put(:enabled, Config.get([:instance, :federating]))
  57
  58     features =
  59       [
  60         "pleroma_api",
  61         "mastodon_api",
  62         "mastodon_api_streaming",
  63         "polls",
  64         "pleroma_explicit_addressing",
  65         "shareable_emoji_packs",
  66         "multifetch",
  67         "pleroma:api/v1/notifications:include_types_filter",
  68         if Config.get([:media_proxy, :enabled]) do
  69           "media_proxy"
  70         end,
  71         if Config.get([:gopher, :enabled]) do
  72           "gopher"
  73         end,
  74         if Config.get([:chat, :enabled]) do
  75           "chat"
  76         end,
  77         if Config.get([:instance, :allow_relay]) do
  78           "relay"
  79         end,
  80         if Config.get([:instance, :safe_dm_mentions]) do
  81           "safe_dm_mentions"
  82         end
  83       ]
  84       |> Enum.filter(& &1)
  85
  86     %{
  87       version: "2.0",
  88       software: %{
  89         name: Pleroma.Application.name() |> String.downcase(),
  90         version: Pleroma.Application.version()
  91       },
  92       protocols: Publisher.gather_nodeinfo_protocol_names(),
  93       services: %{
  94         inbound: [],
  95         outbound: []
  96       },
  97       openRegistrations: Config.get([:instance, :registrations_open]),
  98       usage: %{
  99         users: %{
 100           total: Map.get(stats, :user_count, 0)
 101         },
 102         localPosts: Map.get(stats, :status_count, 0)
 103       },
 104       metadata: %{
 105         nodeName: Config.get([:instance, :name]),
 106         nodeDescription: Config.get([:instance, :description]),
 107         private: !Config.get([:instance, :public], true),
 108         suggestions: %{
 109           enabled: false
 110         },
 111         staffAccounts: staff_accounts,
 112         federation: federation_response,
 113         pollLimits: Config.get([:instance, :poll_limits]),
 114         postFormats: Config.get([:instance, :allowed_post_formats]),
 115         uploadLimits: %{
 116           general: Config.get([:instance, :upload_limit]),
 117           avatar: Config.get([:instance, :avatar_upload_limit]),
 118           banner: Config.get([:instance, :banner_upload_limit]),
 119           background: Config.get([:instance, :background_upload_limit])
 120         },
 121         fieldsLimits: %{
 122           maxFields: Config.get([:instance, :max_account_fields]),
 123           maxRemoteFields: Config.get([:instance, :max_remote_account_fields]),
 124           nameLength: Config.get([:instance, :account_field_name_length]),
 125           valueLength: Config.get([:instance, :account_field_value_length])
 126         },
 127         accountActivationRequired: Config.get([:instance, :account_activation_required], false),
 128         invitesEnabled: Config.get([:instance, :invites_enabled], false),
 129         mailerEnabled: Config.get([Pleroma.Emails.Mailer, :enabled], false),
 130         features: features,
 131         restrictedNicknames: Config.get([Pleroma.User, :restricted_nicknames]),
 132         skipThreadContainment: Config.get([:instance, :skip_thread_containment], false)
 133       }
 134     }
 135   end
 136
 137   # Schema definition: https://github.com/jhass/nodeinfo/blob/master/schemas/2.0/schema.json
 138   # and https://github.com/jhass/nodeinfo/blob/master/schemas/2.1/schema.json
 139   def nodeinfo(conn, %{"version" => "2.0"}) do
 140     conn
 141     |> put_resp_header(
 142       "content-type",
 143       "application/json; profile=http://nodeinfo.diaspora.software/ns/schema/2.0#; charset=utf-8"
 144     )
 145     |> json(raw_nodeinfo())
 146   end
 147
 148   def nodeinfo(conn, %{"version" => "2.1"}) do
 149     raw_response = raw_nodeinfo()
 150
 151     updated_software =
 152       raw_response
 153       |> Map.get(:software)
 154       |> Map.put(:repository, Pleroma.Application.repository())
 155
 156     response =
 157       raw_response
 158       |> Map.put(:software, updated_software)
 159       |> Map.put(:version, "2.1")
 160
 161     conn
 162     |> put_resp_header(
 163       "content-type",
 164       "application/json; profile=http://nodeinfo.diaspora.software/ns/schema/2.1#; charset=utf-8"
 165     )
 166     |> json(response)
 167   end
 168
 169   def nodeinfo(conn, _) do
 170     render_error(conn, :not_found, "Nodeinfo schema version not handled")
 171   end
 172 end