1 files changed, 130 insertions, 0 deletions
diff --git a/lib/pleroma/web/nodeinfo/nodeinfo.ex b/lib/pleroma/web/nodeinfo/nodeinfo.ex
new file mode 100644
index 000000000..d26b7c938
--- /dev/null
+++ b/lib/pleroma/web/nodeinfo/nodeinfo.ex
@@ -0,0 +1,130 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.Nodeinfo.Nodeinfo do
+  alias Pleroma.Config
+  alias Pleroma.Stats
+  alias Pleroma.User
+  alias Pleroma.Web.ActivityPub.MRF
+  alias Pleroma.Web.Federator.Publisher
+
+  # returns a nodeinfo 2.0 map, since 2.1 just adds a repository field
+  # under software.
+  def get_nodeinfo("2.0") do
+    stats = Stats.get_stats()
+
+    quarantined = Config.get([:instance, :quarantined_instances], [])
+
+    staff_accounts =
+      User.all_superusers()
+      |> Enum.map(fn u -> u.ap_id end)
+
+    federation_response =
+      if Config.get([:instance, :mrf_transparency]) do
+        {:ok, data} = MRF.describe()
+
+        data
+        |> Map.merge(%{quarantined_instances: quarantined})
+      else
+        %{}
+      end
+      |> Map.put(:enabled, Config.get([:instance, :federating]))
+
+    features =
+      [
+        "pleroma_api",
+        "mastodon_api",
+        "mastodon_api_streaming",
+        "polls",
+        "pleroma_explicit_addressing",
+        "shareable_emoji_packs",
+        "multifetch",
+        "pleroma:api/v1/notifications:include_types_filter",
+        if Config.get([:media_proxy, :enabled]) do
+          "media_proxy"
+        end,
+        if Config.get([:gopher, :enabled]) do
+          "gopher"
+        end,
+        if Config.get([:chat, :enabled]) do
+          "chat"
+        end,
+        if Config.get([:instance, :allow_relay]) do
+          "relay"
+        end,
+        if Config.get([:instance, :safe_dm_mentions]) do
+          "safe_dm_mentions"
+        end,
+        "pleroma_emoji_reactions"
+      ]
+      |> Enum.filter(& &1)
+
+    %{
+      version: "2.0",
+      software: %{
+        name: Pleroma.Application.name() |> String.downcase(),
+        version: Pleroma.Application.version()
+      },
+      protocols: Publisher.gather_nodeinfo_protocol_names(),
+      services: %{
+        inbound: [],
+        outbound: []
+      },
+      openRegistrations: Config.get([:instance, :registrations_open]),
+      usage: %{
+        users: %{
+          total: Map.get(stats, :user_count, 0)
+        },
+        localPosts: Map.get(stats, :status_count, 0)
+      },
+      metadata: %{
+        nodeName: Config.get([:instance, :name]),
+        nodeDescription: Config.get([:instance, :description]),
+        private: !Config.get([:instance, :public], true),
+        suggestions: %{
+          enabled: false
+        },
+        staffAccounts: staff_accounts,
+        federation: federation_response,
+        pollLimits: Config.get([:instance, :poll_limits]),
+        postFormats: Config.get([:instance, :allowed_post_formats]),
+        uploadLimits: %{
+          general: Config.get([:instance, :upload_limit]),
+          avatar: Config.get([:instance, :avatar_upload_limit]),
+          banner: Config.get([:instance, :banner_upload_limit]),
+          background: Config.get([:instance, :background_upload_limit])
+        },
+        fieldsLimits: %{
+          maxFields: Config.get([:instance, :max_account_fields]),
+          maxRemoteFields: Config.get([:instance, :max_remote_account_fields]),
+          nameLength: Config.get([:instance, :account_field_name_length]),
+          valueLength: Config.get([:instance, :account_field_value_length])
+        },
+        accountActivationRequired: Config.get([:instance, :account_activation_required], false),
+        invitesEnabled: Config.get([:instance, :invites_enabled], false),
+        mailerEnabled: Config.get([Pleroma.Emails.Mailer, :enabled], false),
+        features: features,
+        restrictedNicknames: Config.get([Pleroma.User, :restricted_nicknames]),
+        skipThreadContainment: Config.get([:instance, :skip_thread_containment], false)
+      }
+    }
+  end
+
+  def get_nodeinfo("2.1") do
+    raw_response = get_nodeinfo("2.0")
+
+    updated_software =
+      raw_response
+      |> Map.get(:software)
+      |> Map.put(:repository, Pleroma.Application.repository())
+
+    raw_response
+    |> Map.put(:software, updated_software)
+    |> Map.put(:version, "2.1")
+  end
+
+  def get_nodeinfo(_version) do
+    {:error, :missing}
+  end
+end