feat(nodeinfo): extract and save NodeInfo information from instances to display it on instances list

We also try to detect the application actor if it's not given by NodeInfo metadata (FEP-2677)
(guessing for Mobilizon, PeerTube & Mastodon).

Closes #1392

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/federation/node_info.ex

@@ -7,22 +7,43 @@ defmodule Mobilizon.Federation.NodeInfo do
   require Logger
 
   @application_uri "https://www.w3.org/ns/activitystreams#Application"
+  @nodeinfo_rel_2_0 "http://nodeinfo.diaspora.software/ns/schema/2.0"
+  @nodeinfo_rel_2_1 "http://nodeinfo.diaspora.software/ns/schema/2.1"
+
   @env Application.compile_env(:mobilizon, :env)
 
   @spec application_actor(String.t()) :: String.t() | nil
   def application_actor(host) do
-    prefix = if @env !== :dev, do: "https", else: "http"
+    Logger.debug("Fetching application actor from NodeInfo data for domain #{host}")
 
-    case WebfingerClient.get("#{prefix}://#{host}/.well-known/nodeinfo") do
+    case fetch_nodeinfo_endpoint(host) do
-      {:ok, %{body: body, status: code}} when code in 200..299 ->
+      {:ok, body} ->
         extract_application_actor(body)
 
-      err ->
+      {:error, :node_info_meta_http_error} ->
-        Logger.debug("Failed to fetch NodeInfo data #{inspect(err)}")
         nil
     end
   end
 
+  @spec nodeinfo(String.t()) :: {:ok, map()} | {:error, atom()}
+  def nodeinfo(host) do
+    Logger.debug("Fetching NodeInfo details for domain #{host}")
+
+    with {:ok, endpoint} when is_binary(endpoint) <- fetch_nodeinfo_details(host),
+         :ok <- Logger.debug("Going to get NodeInfo information from URL #{endpoint}"),
+         {:ok, %{body: body, status: code}} when code in 200..299 <- WebfingerClient.get(endpoint) do
+      Logger.debug("Found nodeinfo information for domain #{host}")
+      {:ok, body}
+    else
+      {:error, err} ->
+        {:error, err}
+
+      err ->
+        Logger.debug("Failed to fetch NodeInfo data from endpoint #{inspect(err)}")
+        {:error, :node_info_endpoint_http_error}
+    end
+  end
+
   defp extract_application_actor(body) do
     body
     |> Map.get("links", [])
@@ -31,4 +52,54 @@ defmodule Mobilizon.Federation.NodeInfo do
     end)
     |> Map.get("href")
   end
+
+  @spec fetch_nodeinfo_endpoint(String.t()) :: {:ok, map()} | {:error, atom()}
+  defp fetch_nodeinfo_endpoint(host) do
+    prefix = if @env !== :dev, do: "https", else: "http"
+
+    case WebfingerClient.get("#{prefix}://#{host}/.well-known/nodeinfo") do
+      {:ok, %{body: body, status: code}} when code in 200..299 ->
+        {:ok, body}
+
+      err ->
+        Logger.debug("Failed to fetch NodeInfo data #{inspect(err)}")
+        {:error, :node_info_meta_http_error}
+    end
+  end
+
+  @spec fetch_nodeinfo_details(String.t()) :: {:ok, String.t()} | {:error, atom()}
+  defp fetch_nodeinfo_details(host) do
+    with {:ok, body} <- fetch_nodeinfo_endpoint(host) do
+      extract_nodeinfo_endpoint(body)
+    end
+  end
+
+  @spec extract_nodeinfo_endpoint(map()) ::
+          {:ok, String.t()}
+          | {:error, :no_node_info_endpoint_found | :no_valid_node_info_endpoint_found}
+  defp extract_nodeinfo_endpoint(body) do
+    links = Map.get(body, "links", [])
+
+    relation =
+      find_nodeinfo_relation(links, @nodeinfo_rel_2_1) ||
+        find_nodeinfo_relation(links, @nodeinfo_rel_2_0)
+
+    if is_nil(relation) do
+      {:error, :no_node_info_endpoint_found}
+    else
+      endpoint = Map.get(relation, "href")
+
+      if is_nil(endpoint) do
+        {:error, :no_valid_node_info_endpoint_found}
+      else
+        {:ok, endpoint}
+      end
+    end
+  end
+
+  defp find_nodeinfo_relation(links, relation) do
+    Enum.find(links, fn %{"rel" => rel, "href" => href} ->
+      rel == relation and is_binary(href)
+    end)
+  end
 end

lib/graphql/resolvers/admin.ex

@@ -490,19 +490,35 @@ defmodule Mobilizon.GraphQL.Resolvers.Admin do
         context: %{current_user: %User{role: role}}
       })
       when is_admin(role) do
-    remote_relay = Actors.get_relay(domain)
+    remote_relay = Instances.get_instance_actor(domain)
     local_relay = Relay.get_actor()
 
-    result = %{
+    result =
-      has_relay: !is_nil(remote_relay),
+      if is_nil(remote_relay) do
-      relay_address:
+        %{
-        if(is_nil(remote_relay),
+          has_relay: false,
-          do: nil,
+          relay_address: nil,
-          else: "#{remote_relay.preferred_username}@#{remote_relay.domain}"
+          follower_status: nil,
-        ),
+          followed_status: nil,
-      follower_status: follow_status(remote_relay, local_relay),
+          software: nil,
-      followed_status: follow_status(local_relay, remote_relay)
+          software_version: nil
         }
+      else
+        %{
+          has_relay: !is_nil(remote_relay.actor),
+          relay_address:
+            if(is_nil(remote_relay.actor),
+              do: nil,
+              else: Actor.preferred_username_and_domain(remote_relay.actor)
+            ),
+          follower_status: follow_status(remote_relay.actor, local_relay),
+          followed_status: follow_status(local_relay, remote_relay.actor),
+          instance_name: remote_relay.instance_name,
+          instance_description: remote_relay.instance_description,
+          software: remote_relay.software,
+          software_version: remote_relay.software_version
+        }
+      end
 
     case Instances.instance(domain) do
       nil -> {:error, :not_found}

lib/graphql/schema/admin.ex

@@ -227,6 +227,16 @@ defmodule Mobilizon.GraphQL.Schema.AdminType do
     field(:relay_address, :string,
       description: "If this instance has a relay, it's federated username"
     )
+
+    field(:instance_name, :string, description: "This instance's name")
+
+    field(:instance_description, :string, description: "This instance's description")
+
+    field(:software, :string, description: "The software this instance declares running")
+
+    field(:software_version, :string,
+      description: "The software version this instance declares running"
+    )
   end
 
   @desc """

lib/mobilizon/instances/instance_actor.ex

@@ -0,0 +1,39 @@
+defmodule Mobilizon.Instances.InstanceActor do
+  @moduledoc """
+  An instance actor
+  """
+  use Ecto.Schema
+  import Ecto.Changeset
+  alias Mobilizon.Actors.Actor
+
+  @type t :: %__MODULE__{
+          domain: String.t(),
+          actor: Actor.t(),
+          instance_name: String.t(),
+          instance_description: String.t(),
+          software: String.t(),
+          software_version: String.t()
+        }
+
+  schema "instance_actors" do
+    field(:domain, :string)
+    field(:instance_name, :string)
+    field(:instance_description, :string)
+    field(:software, :string)
+    field(:software_version, :string)
+    belongs_to(:actor, Actor)
+
+    timestamps()
+  end
+
+  @required_attrs [:domain]
+  @optional_attrs [:actor_id, :instance_name, :instance_description, :software, :software_version]
+  @attrs @required_attrs ++ @optional_attrs
+
+  def changeset(%__MODULE__{} = instance_actor, attrs) do
+    instance_actor
+    |> cast(attrs, @attrs)
+    |> validate_required(@required_attrs)
+    |> unique_constraint(:domain)
+  end
+end

lib/mobilizon/instances/instances.ex

@@ -4,7 +4,7 @@ defmodule Mobilizon.Instances do
   """
   alias Ecto.Adapters.SQL
   alias Mobilizon.Actors.{Actor, Follower}
-  alias Mobilizon.Instances.Instance
+  alias Mobilizon.Instances.{Instance, InstanceActor}
   alias Mobilizon.Storage.{Page, Repo}
   import Ecto.Query
 
@@ -12,13 +12,13 @@ defmodule Mobilizon.Instances do
 
   @spec instances(Keyword.t()) :: Page.t(Instance.t())
   def instances(options) do
-    page = Keyword.get(options, :page)
+    page = Keyword.get(options, :page, 1)
-    limit = Keyword.get(options, :limit)
+    limit = Keyword.get(options, :limit, 10)
-    order_by = Keyword.get(options, :order_by)
+    order_by = Keyword.get(options, :order_by, :event_count)
-    direction = Keyword.get(options, :direction)
+    direction = Keyword.get(options, :direction, :desc)
     filter_domain = Keyword.get(options, :filter_domain)
-    # suspend_status = Keyword.get(options, :filter_suspend_status)
+    # suspend_status = Keyword.get(options, :filter_suspend_status, :all)
-    follow_status = Keyword.get(options, :filter_follow_status)
+    follow_status = Keyword.get(options, :filter_follow_status, :all)
 
     order_by_options = Keyword.new([{direction, order_by}])
 
@@ -42,7 +42,9 @@ defmodule Mobilizon.Instances do
     query =
       Instance
       |> join(:left, [i], s in subquery(subquery), on: i.domain == s.domain)
-      |> select([i, s], {i, s})
+      |> join(:left, [i], ia in InstanceActor, on: i.domain == ia.domain)
+      |> join(:left, [_i, _s, ia], a in Actor, on: ia.actor_id == a.id)
+      |> select([i, s, ia, a], {i, s, ia, a})
       |> order_by(^order_by_options)
 
     query =
@@ -100,16 +102,72 @@ defmodule Mobilizon.Instances do
             following: following,
             following_approved: following_approved,
             has_relay: has_relay
-          }}
+          }, instance_meta, instance_actor}
        ) do
     instance
     |> Map.put(:follower_status, follow_status(following, following_approved))
     |> Map.put(:followed_status, follow_status(follower, follower_approved))
     |> Map.put(:has_relay, has_relay)
+    |> Map.put(:instance_actor, instance_actor)
+    |> add_metadata_details(instance_meta)
+  end
+
+  @spec add_metadata_details(map(), InstanceActor.t() | nil) :: map()
+  defp add_metadata_details(instance, nil), do: instance
+
+  defp add_metadata_details(instance, instance_meta) do
+    instance
+    |> Map.put(:instance_name, instance_meta.instance_name)
+    |> Map.put(:instance_description, instance_meta.instance_description)
+    |> Map.put(:software, instance_meta.software)
+    |> Map.put(:software_version, instance_meta.software_version)
   end
 
   defp follow_status(true, true), do: :approved
   defp follow_status(true, false), do: :pending
   defp follow_status(false, _), do: :none
   defp follow_status(nil, _), do: :none
+
+  @spec get_instance_actor(String.t()) :: InstanceActor.t() | nil
+  def get_instance_actor(domain) do
+    InstanceActor
+    |> Repo.get_by(domain: domain)
+    |> Repo.preload(:actor)
+  end
+
+  @doc """
+  Creates an instance actor.
+  """
+  @spec create_instance_actor(map) :: {:ok, InstanceActor.t()} | {:error, Ecto.Changeset.t()}
+  def create_instance_actor(attrs \\ %{}) do
+    with {:ok, %InstanceActor{} = instance_actor} <-
+           %InstanceActor{}
+           |> InstanceActor.changeset(attrs)
+           |> Repo.insert(on_conflict: :replace_all, conflict_target: :domain) do
+      {:ok, Repo.preload(instance_actor, :actor)}
+    end
+  end
+
+  @doc """
+  Updates an instance actor.
+  """
+  @spec update_instance_actor(InstanceActor.t(), map) ::
+          {:ok, InstanceActor.t()} | {:error, Ecto.Changeset.t()}
+  def update_instance_actor(%InstanceActor{} = instance_actor, attrs) do
+    with {:ok, %InstanceActor{} = instance_actor} <-
+           instance_actor
+           |> Repo.preload(:actor)
+           |> InstanceActor.changeset(attrs)
+           |> Repo.update() do
+      {:ok, Repo.preload(instance_actor, :actor)}
+    end
+  end
+
+  @doc """
+  Deletes a post
+  """
+  @spec delete_instance_actor(InstanceActor.t()) :: {:ok, Post.t()} | {:error, Ecto.Changeset.t()}
+  def delete_instance_actor(%InstanceActor{} = instance_actor) do
+    Repo.delete(instance_actor)
+  end
 end

lib/service/workers/refresh_instances.ex

@@ -3,14 +3,16 @@ defmodule Mobilizon.Service.Workers.RefreshInstances do
   Worker to refresh the instances materialized view and the relay actors
   """
 
-  use Oban.Worker, unique: [period: :infinity, keys: [:event_uuid, :action]]
+  use Oban.Worker
 
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Federation.ActivityPub.Actor, as: ActivityPubActor
   alias Mobilizon.Federation.ActivityPub.Relay
+  alias Mobilizon.Federation.NodeInfo
   alias Mobilizon.Instances
-  alias Mobilizon.Instances.Instance
+  alias Mobilizon.Instances.{Instance, InstanceActor}
   alias Oban.Job
+  require Logger
 
   @impl Oban.Worker
   @spec perform(Oban.Job.t()) :: :ok
@@ -30,6 +32,8 @@ defmodule Mobilizon.Service.Workers.RefreshInstances do
     {:error, :not_remote_instance}
   end
 
+  @spec refresh_instance_actor(Instance.t()) ::
+          {:ok, InstanceActor.t()} | {:error, Ecto.Changeset.t()} | {:error, atom}
   def refresh_instance_actor(%Instance{domain: domain}) do
     %Actor{url: url} = Relay.get_actor()
     %URI{host: host} = URI.new!(url)
@@ -37,7 +41,67 @@ defmodule Mobilizon.Service.Workers.RefreshInstances do
     if host == domain do
       {:error, :not_remote_instance}
     else
-      ActivityPubActor.find_or_make_actor_from_nickname("relay@#{domain}")
+      actor_id =
+        case fetch_actor(domain) do
+          {:ok, %Actor{id: actor_id}} -> actor_id
+          _ -> nil
+        end
+
+      with instance_metadata <- fetch_instance_metadata(domain),
+           :ok <- Logger.debug("Ready to save instance actor details"),
+           {:ok, %InstanceActor{}} <-
+             Instances.create_instance_actor(%{
+               domain: domain,
+               actor_id: actor_id,
+               instance_name: get_in(instance_metadata, ["metadata", "nodeName"]),
+               instance_description: get_in(instance_metadata, ["metadata", "nodeDescription"]),
+               software: get_in(instance_metadata, ["software", "name"]),
+               software_version: get_in(instance_metadata, ["software", "version"])
+             }) do
+        Logger.info("Saved instance actor details for domain #{host}")
+      else
+        err ->
+          Logger.error(inspect(err))
       end
     end
   end
+
+  defp mobilizon(domain), do: "relay@#{domain}"
+  defp peertube(domain), do: "peertube@#{domain}"
+  defp mastodon(domain), do: "#{domain}@#{domain}"
+
+  defp fetch_actor(domain) do
+    case NodeInfo.application_actor(domain) do
+      nil -> guess_application_actor(domain)
+      url -> ActivityPubActor.get_or_fetch_actor_by_url(url)
+    end
+  end
+
+  defp fetch_instance_metadata(domain) do
+    case NodeInfo.nodeinfo(domain) do
+      {:error, _} ->
+        %{}
+
+      {:ok, metadata} ->
+        metadata
+    end
+  end
+
+  defp guess_application_actor(domain) do
+    Enum.find_value(
+      [
+        &mobilizon/1,
+        &peertube/1,
+        &mastodon/1
+      ],
+      {:error, :no_application_actor_found},
+      fn username_pattern ->
+        case ActivityPubActor.find_or_make_actor_from_nickname(username_pattern.(domain)) do
+          {:ok, %Actor{type: :Application} = actor} -> {:ok, actor}
+          {:error, _err} -> false
+          {:ok, _actor} -> false
+        end
+      end
+    )
+  end
+end

priv/repo/migrations/20231220092536_add_actor_instances.exs

@@ -0,0 +1,17 @@
+defmodule Mobilizon.Storage.Repo.Migrations.AddActorInstances do
+  use Ecto.Migration
+
+  def change do
+    create table(:instance_actors) do
+      add(:domain, :string)
+      add(:instance_name, :string)
+      add(:instance_description, :string)
+      add(:software, :string)
+      add(:software_version, :string)
+      add(:actor_id, references(:actors, on_delete: :delete_all))
+      timestamps()
+    end
+
+    create(unique_index(:instance_actors, [:domain]))
+  end
+end

public/img/wordpress-logo.svg

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg fill="#000000" version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" 
+	 width="800px" height="800px" viewBox="0 0 96.24 96.24" xml:space="preserve"
+	>
+<g>
+	<path d="M48.122,0C21.587,0,0.001,21.585,0.001,48.118c0,26.535,21.587,48.122,48.12,48.122c26.532,0,48.117-21.587,48.117-48.122
+		C96.239,21.586,74.654,0,48.122,0z M4.857,48.118c0-6.271,1.345-12.227,3.746-17.606l20.638,56.544
+		C14.81,80.042,4.857,65.243,4.857,48.118z M48.122,91.385c-4.247,0-8.346-0.623-12.222-1.763L48.88,51.903l13.301,36.433
+		c0.086,0.215,0.191,0.411,0.308,0.596C57.992,90.514,53.16,91.385,48.122,91.385z M54.083,27.834
+		c2.604-0.137,4.953-0.412,4.953-0.412c2.33-0.276,2.057-3.701-0.277-3.564c0,0-7.007,0.549-11.532,0.549
+		c-4.25,0-11.396-0.549-11.396-0.549c-2.332-0.137-2.604,3.427-0.273,3.564c0,0,2.208,0.275,4.537,0.412l6.74,18.469l-9.468,28.395
+		L21.615,27.835c2.608-0.136,4.952-0.412,4.952-0.412c2.33-0.275,2.055-3.702-0.278-3.562c0,0-7.004,0.549-11.53,0.549
+		c-0.813,0-1.77-0.021-2.784-0.052C19.709,12.611,33.008,4.856,48.122,4.856c11.265,0,21.519,4.306,29.215,11.357
+		c-0.187-0.01-0.368-0.035-0.562-0.035c-4.248,0-7.264,3.702-7.264,7.679c0,3.564,2.055,6.582,4.248,10.146
+		c1.647,2.882,3.567,6.585,3.567,11.932c0,3.704-1.422,8-3.293,13.986l-4.315,14.421L54.083,27.834z M69.871,85.516l13.215-38.208
+		c2.471-6.171,3.29-11.106,3.29-15.497c0-1.591-0.104-3.07-0.292-4.449c3.38,6.163,5.303,13.236,5.301,20.758
+		C91.384,64.08,82.732,78.016,69.871,85.516z"/>
+</g>
+</svg>

src/assets/oruga-tailwindcss.css

@@ -293,7 +293,7 @@ button.menubar__button {
   @apply px-3 dark:text-black;
 }
 .pagination-link-current {
-  @apply bg-primary dark:bg-primary cursor-not-allowed pointer-events-none border-primary text-white dark:text-zinc-900;
+  @apply bg-primary dark:bg-primary cursor-not-allowed pointer-events-none border-primary text-white;
 }
 .pagination-ellipsis {
   @apply text-center m-1 text-gray-300;

src/components/Settings/SettingMenuItem.vue

@@ -2,8 +2,8 @@
   <li
     class="setting-menu-item"
     :class="{
-      'cursor-pointer bg-mbz-yellow-alt-500 dark:bg-mbz-purple-500': isActive,
+      'cursor-pointer bg-mbz-yellow-alt-500 dark:bg-mbz-purple-600': isActive,
-      'bg-mbz-yellow-alt-100 hover:bg-mbz-yellow-alt-200 dark:bg-mbz-purple-300 dark:hover:bg-mbz-purple-400 dark:text-white':
+      'bg-mbz-yellow-alt-100 hover:bg-mbz-yellow-alt-200 dark:bg-mbz-purple-500 dark:hover:bg-mbz-purple-600 dark:text-white':
         !isActive,
     }"
   >

src/components/Settings/SettingMenuSection.vue

@@ -1,6 +1,6 @@
 <template>
   <li
-    class="bg-mbz-yellow-alt-300 text-violet-2 dark:bg-mbz-purple-500 dark:text-zinc-100 text-xl"
+    class="bg-mbz-yellow-alt-300 text-violet-2 dark:bg-mbz-purple-700 dark:text-zinc-100 text-xl"
   >
     <router-link
       class="cursor-pointer my-2 mx-0 py-2 px-3 font-medium block no-underline"

src/graphql/admin.ts

@@ -81,6 +81,10 @@ export const INSTANCE_FRAGMENT = gql`
   fragment InstanceFragment on Instance {
     domain
     hasRelay
+    instanceName
+    instanceDescription
+    software
+    softwareVersion
     relayAddress
     followerStatus
     followedStatus

src/i18n/en_US.json

@@ -1638,5 +1638,8 @@
   "Return to the event page": "Return to the event page",
   "Cancel participation": "Cancel participation",
   "Add a recipient": "Add a recipient",
-  "Announcements for {eventTitle}": "Announcements for {eventTitle}"
+  "Announcements for {eventTitle}": "Announcements for {eventTitle}",
+  "Visit {instance_domain}": "Visit {instance_domain}",
+  "Software details: {software_details}": "Software details: {software_details}",
+  "Only instances with an application actor can be followed": "Only instances with an application actor can be followed"
 }

src/i18n/fr_FR.json

@@ -1632,5 +1632,8 @@
   "Return to the event page": "Retourner à la page de l'événement",
   "Cancel participation": "Annuler la participation",
   "Add a recipient": "Ajouter un·e destinataire",
-  "Announcements for {eventTitle}": "Annonces pour {eventTitle}"
+  "Announcements for {eventTitle}": "Annonces pour {eventTitle}",
+  "Visit {instance_domain}": "Visiter {instance_domain}",
+  "Software details: {software_details}": "Détails du logiciel : {software_details}",
+  "Only instances with an application actor can be followed": "Seules les instances avec un acteur application peuvent être suivies"
 }

src/types/instance.model.ts

@@ -3,6 +3,10 @@ import { InstanceFollowStatus } from "./enums";
 export interface IInstance {
   domain: string;
   hasRelay: boolean;
+  instanceName: string | null;
+  instanceDescription: string | null;
+  software: string | null;
+  softwareVersion: string | null;
   relayAddress: string | null;
   followerStatus: InstanceFollowStatus;
   followedStatus: InstanceFollowStatus;

src/views/Admin/InstanceView.vue

@@ -2,12 +2,50 @@
   <div v-if="instance">
     <breadcrumbs-nav
       :links="[
-        { name: RouteName.ADMIN, text: $t('Admin') },
+        { name: RouteName.ADMIN, text: t('Admin') },
-        { name: RouteName.INSTANCES, text: $t('Instances') },
+        { name: RouteName.INSTANCES, text: t('Instances') },
         { text: instance.domain },
       ]"
     />
-    <h1 class="text-2xl">{{ instance.domain }}</h1>
+    <section
+      class="flex flex-wrap md:flex-nowrap items-center justify-between gap-4"
+    >
+      <div>
+        <h2 class="text-4xl font-bold" v-if="instance.instanceName">
+          {{ instance.instanceName }}
+        </h2>
+        <h2 class="text-4xl font-bold" v-else>{{ instance.domain }}</h2>
+        <p
+          v-if="instance.instanceDescription"
+          class="text-slate-700 dark:text-slate-400 my-4"
+        >
+          {{ instance.instanceDescription }}
+        </p>
+        <i18n-t
+          v-if="instance.software && instance.softwareVersion"
+          keypath="Software details: {software_details}"
+          class="my-4"
+        >
+          <template #software_details>
+            <span class="capitalize">
+              {{ instance.software }} - {{ instance.softwareVersion }}
+            </span>
+          </template>
+        </i18n-t>
+      </div>
+      <o-button
+        tag="a"
+        :href="`https://${instance.domain}`"
+        target="_blank"
+        rel="noopener noreferrer"
+        icon-right="open-in-new"
+        class="mx-auto md:mx-0"
+        >{{
+          t("Visit {instance_domain}", { instance_domain: instance.domain })
+        }}
+      </o-button>
+    </section>
+    <section>
       <div
         class="grid md:grid-cols-2 xl:grid-cols-4 gap-2 content-center text-center mt-2"
       >
@@ -21,7 +59,7 @@
             <span class="mb-4 text-xl font-semibold block">{{
               instance.personCount
             }}</span>
-          <span class="text-sm block">{{ $t("Profiles") }}</span>
+            <span class="text-sm block">{{ t("Profiles") }}</span>
           </router-link>
         </div>
         <div class="bg-gray-50 dark:bg-mbz-purple-500 rounded-xl p-8">
@@ -34,42 +72,52 @@
             <span class="mb-4 text-xl font-semibold block">{{
               instance.groupCount
             }}</span>
-          <span class="text-sm block">{{ $t("Groups") }}</span>
+            <span class="text-sm block">{{ t("Groups") }}</span>
           </router-link>
         </div>
         <div class="bg-zinc-50 dark:bg-mbz-purple-500 rounded-xl p-8">
           <span class="mb-4 text-xl font-semibold block">{{
             instance.followingsCount
           }}</span>
-        <span class="text-sm block">{{ $t("Followings") }}</span>
+          <span class="text-sm block">{{ t("Followings") }}</span>
         </div>
         <div class="bg-zinc-50 dark:bg-mbz-purple-500 rounded-xl p-8">
           <span class="mb-4 text-xl font-semibold block">{{
             instance.followersCount
           }}</span>
-        <span class="text-sm block">{{ $t("Followers") }}</span>
+          <span class="text-sm block">{{ t("Followers") }}</span>
         </div>
         <div class="bg-zinc-50 dark:bg-mbz-purple-500 rounded-xl p-8">
           <router-link
-          :to="{ name: RouteName.REPORTS, query: { domain: instance.domain } }"
+            :to="{
+              name: RouteName.REPORTS,
+              query: { domain: instance.domain },
+            }"
           >
             <span class="mb-4 text-xl font-semibold block">{{
               instance.reportsCount
             }}</span>
-          <span class="text-sm block">{{ $t("Reports") }}</span>
+            <span class="text-sm block">{{ t("Reports") }}</span>
           </router-link>
         </div>
         <div class="bg-zinc-50 dark:bg-mbz-purple-500 rounded-xl p-8">
           <span class="mb-4 font-semibold block">{{
             formatBytes(instance.mediaSize)
           }}</span>
-        <span class="text-sm block">{{ $t("Uploaded media size") }}</span>
+          <span class="text-sm block">{{ t("Uploaded media size") }}</span>
         </div>
       </div>
+    </section>
+    <section>
       <div class="mt-3 grid xl:grid-cols-2 gap-4">
         <div
           class="border bg-white dark:bg-mbz-purple-500 dark:border-mbz-purple-700 p-6 shadow-md rounded-md"
-        v-if="instance.hasRelay"
+          v-if="
+            instance.hasRelay &&
+            !['mastodon', 'peertube'].includes(
+              instance.software?.toLowerCase() ?? ''
+            )
+          "
         >
           <button
             @click="
@@ -80,7 +128,7 @@
             v-if="instance.followedStatus == InstanceFollowStatus.APPROVED"
             class="bg-primary hover:bg-primary-700 focus:outline-none focus:ring-2 focus:ring-gray-400 focus:ring-offset-2 focus:ring-offset-gray-50 text-white hover:text-white font-semibold h-12 px-6 rounded-lg w-full flex items-center justify-center sm:w-auto"
           >
-          {{ $t("Stop following instance") }}
+            {{ t("Stop following instance") }}
           </button>
           <button
             @click="
@@ -91,18 +139,18 @@
             v-else-if="instance.followedStatus == InstanceFollowStatus.PENDING"
             class="bg-primary hover:bg-primary-700 focus:outline-none focus:ring-2 focus:ring-gray-400 focus:ring-offset-2 focus:ring-offset-gray-50 text-white hover:text-white font-semibold h-12 px-6 rounded-lg w-full flex items-center justify-center sm:w-auto"
           >
-          {{ $t("Cancel follow request") }}
+            {{ t("Cancel follow request") }}
           </button>
           <button
             @click="followInstance"
             v-else
             class="bg-primary hover:bg-primary-700 focus:outline-none focus:ring-2 focus:ring-gray-400 focus:ring-offset-2 focus:ring-offset-gray-50 text-white hover:text-white font-semibold h-12 px-6 rounded-lg w-full flex items-center justify-center sm:w-auto"
           >
-          {{ $t("Follow instance") }}
+            {{ t("Follow instance") }}
           </button>
         </div>
         <div v-else class="md:h-48 py-16 text-center opacity-50">
-        {{ $t("Only Mobilizon instances can be followed") }}
+          {{ t("Only instances with an application actor can be followed") }}
         </div>
         <div
           class="border bg-white dark:bg-mbz-purple-500 dark:border-mbz-purple-700 p-6 shadow-md rounded-md flex flex-col gap-2"
@@ -116,7 +164,7 @@
             v-if="instance.followerStatus == InstanceFollowStatus.PENDING"
             class="bg-green-700 hover:bg-primary-700 focus:outline-none focus:ring-2 focus:ring-gray-400 focus:ring-offset-2 focus:ring-offset-gray-50 text-white hover:text-white font-semibold h-12 px-6 rounded-lg w-full flex items-center justify-center sm:w-auto"
           >
-          {{ $t("Accept follow") }}
+            {{ t("Accept follow") }}
           </button>
           <button
             @click="
@@ -127,13 +175,14 @@
             v-if="instance.followerStatus != InstanceFollowStatus.NONE"
             class="bg-red-700 hover:bg-primary-700 focus:outline-none focus:ring-2 focus:ring-gray-400 focus:ring-offset-2 focus:ring-offset-gray-50 text-white hover:text-white font-semibold h-12 px-6 rounded-lg w-full flex items-center justify-center sm:w-auto"
           >
-          {{ $t("Reject follow") }}
+            {{ t("Reject follow") }}
           </button>
           <p v-if="instance.followerStatus == InstanceFollowStatus.NONE">
-          {{ $t("This instance doesn't follow yours.") }}
+            {{ t("This instance doesn't follow yours.") }}
           </p>
         </div>
       </div>
+    </section>
   </div>
 </template>
 <script lang="ts" setup>
@@ -152,6 +201,7 @@ import { InstanceFollowStatus } from "@/types/enums";
 import { useMutation, useQuery } from "@vue/apollo-composable";
 import { computed, inject } from "vue";
 import { Notifier } from "@/plugins/notifier";
+import { useI18n } from "vue-i18n";
 
 const props = defineProps<{ domain: string }>();
 
@@ -164,6 +214,8 @@ const instance = computed(() => instanceResult.value?.instance);
 
 const notifier = inject<Notifier>("notifier");
 
+const { t } = useI18n({ useScope: "global" });
+
 const { mutate: acceptInstance, onError: onAcceptInstanceError } = useMutation(
   ACCEPT_RELAY,
   () => ({

src/views/Admin/InstancesView.vue

@@ -72,21 +72,65 @@
             name: RouteName.INSTANCE,
             params: { domain: instance.domain },
           }"
-          class="flex items-center mb-2 rounded bg-mbz-yellow-alt-300 dark:bg-mbz-purple-400 p-4 flex-wrap justify-center gap-x-2 gap-y-3"
+          class="flex items-center mb-2 rounded bg-mbz-yellow-alt-300 hover:bg-mbz-yellow-alt-200 dark:bg-mbz-purple-600 dark:hover:bg-mbz-purple-700 p-4 flex-wrap justify-center gap-x-2 gap-y-3"
           v-for="instance in instances.elements"
           :key="instance.domain"
         >
           <div class="grow overflow-hidden flex items-center gap-1">
             <img
               class="w-12"
-              v-if="instance.hasRelay"
+              v-if="instance.software === 'Mobilizon'"
               src="/img/logo.svg"
               alt=""
             />
-            <CloudQuestion v-else :size="36" />
+            <mastodon-logo
+              class="w-8 mx-2"
+              alt=""
+              v-else-if="instance.software?.toLowerCase() === 'mastodon'"
+            />
+            <img
+              class="w-8 mx-2"
+              v-else-if="instance.software?.toLowerCase() === 'gancio'"
+              src="/img/gancio.png"
+              alt=""
+            />
+            <img
+              class="w-8 mx-2"
+              v-else-if="instance.software?.toLowerCase() === 'wordpress'"
+              src="/img/wordpress-logo.svg"
+              alt=""
+            />
+            <CloudQuestion class="mx-1.5" v-else :size="36" />
 
             <div class="">
-              <h3 class="text-lg truncate">{{ instance.domain }}</h3>
+              <h3
+                class="text-lg truncate font-bold text-slate-800 dark:text-slate-100"
+                v-if="instance.instanceName"
+              >
+                {{ instance.instanceName }}
+              </h3>
+              <h3
+                class="text-lg truncate font-bold text-slate-800 dark:text-slate-100"
+                v-else
+              >
+                {{ instance.domain }}
+              </h3>
+              <p
+                v-if="instance.instanceName"
+                class="inline-flex gap-2 text-slate-700 dark:text-slate-300"
+              >
+                <span class="capitalize" v-if="instance.software">{{
+                  instance.software
+                }}</span>
+                -
+                <span>{{ instance.domain }}</span>
+              </p>
+              <p
+                v-else-if="instance.software"
+                class="capitalize text-slate-700 dark:text-slate-300"
+              >
+                {{ instance.software }}
+              </p>
               <span
                 class="text-sm"
                 v-if="instance.followedStatus === InstanceFollowStatus.APPROVED"
@@ -186,6 +230,7 @@ import { useRouter } from "vue-router";
 import { useHead } from "@unhead/vue";
 import CloudQuestion from "../../../node_modules/vue-material-design-icons/CloudQuestion.vue";
 import { Notifier } from "@/plugins/notifier";
+import MastodonLogo from "@/components/Share/MastodonLogo.vue";
 
 const INSTANCES_PAGE_LIMIT = 10;
 

test/federation/node_info_test.exs

@@ -8,6 +8,10 @@ defmodule Mobilizon.Federation.NodeInfoTest do
   @instance_domain "event-federation.eu"
   @nodeinfo_fixture_path "test/fixtures/nodeinfo/wp-event-federation.json"
   @nodeinfo_regular_fixture_path "test/fixtures/nodeinfo/regular.json"
+  @nodeinfo_both_versions_fixture_path "test/fixtures/nodeinfo/both_versions.json"
+  @nodeinfo_older_versions_fixture_path "test/fixtures/nodeinfo/older_versions.json"
+  @nodeinfo_data_fixture_path "test/fixtures/nodeinfo/data.json"
+  @nodeinfo_wp_data_fixture_path "test/fixtures/nodeinfo/wp-data.json"
 
   describe "getting application actor" do
     test "from wordpress event federation" do
@@ -57,4 +61,128 @@ defmodule Mobilizon.Federation.NodeInfoTest do
       assert nil == NodeInfo.application_actor(@instance_domain)
     end
   end
+
+  describe "getting informations" do
+    test "with both 2.0 and 2.1 endpoints" do
+      nodeinfo_end_point_data =
+        @nodeinfo_both_versions_fixture_path |> File.read!() |> Jason.decode!()
+
+      nodeinfo_data = @nodeinfo_data_fixture_path |> File.read!() |> Jason.decode!()
+
+      WebfingerClientMock
+      |> expect(:call, fn
+        %{
+          method: :get,
+          url: "https://mobilizon.fr/.well-known/nodeinfo"
+        },
+        _opts ->
+          {:ok, %Tesla.Env{status: 200, body: nodeinfo_end_point_data}}
+      end)
+
+      WebfingerClientMock
+      |> expect(:call, fn
+        %{
+          method: :get,
+          url: "https://mobilizon.fr/.well-known/nodeinfo/2.1"
+        },
+        _opts ->
+          {:ok, %Tesla.Env{status: 200, body: nodeinfo_data}}
+      end)
+
+      assert {:ok, data} = NodeInfo.nodeinfo("mobilizon.fr")
+      assert data["version"] == "2.1"
+      assert data["software"]["name"] == "Mobilizon"
+      # Added in 2.1
+      refute is_nil(data["software"]["repository"])
+    end
+
+    test "with only 2.0 endpoint" do
+      nodeinfo_end_point_data = @nodeinfo_regular_fixture_path |> File.read!() |> Jason.decode!()
+      nodeinfo_wp_data = @nodeinfo_wp_data_fixture_path |> File.read!() |> Jason.decode!()
+
+      WebfingerClientMock
+      |> expect(:call, fn
+        %{
+          method: :get,
+          url: "https://event-federation.eu/.well-known/nodeinfo"
+        },
+        _opts ->
+          {:ok, %Tesla.Env{status: 200, body: nodeinfo_end_point_data}}
+      end)
+
+      WebfingerClientMock
+      |> expect(:call, fn
+        %{
+          method: :get,
+          url: "https://event-federation.eu/wp-json/activitypub/1.0/nodeinfo"
+        },
+        _opts ->
+          {:ok, %Tesla.Env{status: 200, body: nodeinfo_wp_data}}
+      end)
+
+      assert {:ok, data} = NodeInfo.nodeinfo("event-federation.eu")
+      assert data["version"] == "2.0"
+      assert data["software"]["name"] == "wordpress"
+      # Added in 2.1
+      assert is_nil(data["software"]["repository"])
+    end
+
+    test "with no valid endpoint" do
+      nodeinfo_end_point_data =
+        @nodeinfo_older_versions_fixture_path |> File.read!() |> Jason.decode!()
+
+      WebfingerClientMock
+      |> expect(:call, fn
+        %{
+          method: :get,
+          url: "https://somewhere.tld/.well-known/nodeinfo"
+        },
+        _opts ->
+          {:ok, %Tesla.Env{status: 200, body: nodeinfo_end_point_data}}
+      end)
+
+      assert {:error, :no_node_info_endpoint_found} = NodeInfo.nodeinfo("somewhere.tld")
+    end
+
+    test "with no answer from well-known endpoint" do
+      WebfingerClientMock
+      |> expect(:call, fn
+        %{
+          method: :get,
+          url: "https://somewhere.tld/.well-known/nodeinfo"
+        },
+        _opts ->
+          {:ok, %Tesla.Env{status: 404}}
+      end)
+
+      assert {:error, :node_info_meta_http_error} = NodeInfo.nodeinfo("somewhere.tld")
+    end
+
+    test "with no answer from version endpoint" do
+      nodeinfo_end_point_data =
+        @nodeinfo_both_versions_fixture_path |> File.read!() |> Jason.decode!()
+
+      WebfingerClientMock
+      |> expect(:call, fn
+        %{
+          method: :get,
+          url: "https://mobilizon.fr/.well-known/nodeinfo"
+        },
+        _opts ->
+          {:ok, %Tesla.Env{status: 200, body: nodeinfo_end_point_data}}
+      end)
+
+      WebfingerClientMock
+      |> expect(:call, fn
+        %{
+          method: :get,
+          url: "https://mobilizon.fr/.well-known/nodeinfo/2.1"
+        },
+        _opts ->
+          {:ok, %Tesla.Env{status: 404}}
+      end)
+
+      assert {:error, :node_info_endpoint_http_error} = NodeInfo.nodeinfo("mobilizon.fr")
+    end
+  end
 end

test/fixtures/nodeinfo/both_versions.json

@@ -0,0 +1,12 @@
+{
+    "links": [
+        {
+            "rel": "http://nodeinfo.diaspora.software/ns/schema/2.0",
+            "href": "https://mobilizon.fr/.well-known/nodeinfo/2.0"
+        },
+        {
+            "rel": "http://nodeinfo.diaspora.software/ns/schema/2.1",
+            "href": "https://mobilizon.fr/.well-known/nodeinfo/2.1"
+        }
+    ]
+}

test/fixtures/nodeinfo/data.json

@@ -0,0 +1,29 @@
+{
+    "version": "2.1",
+    "protocols": [
+        "activitypub"
+    ],
+    "metadata": {
+        "nodeDescription": "Mobilizon.fr est l'instance Mobilizon de Framasoft.",
+        "nodeName": "Mobilizon"
+    },
+    "usage": {
+        "users": {
+            "total": 9204
+        },
+        "localComments": 3253,
+        "localPosts": 7545
+    },
+    "services": {
+        "outbound": [
+            "atom1.0"
+        ],
+        "inbound": []
+    },
+    "software": {
+        "name": "Mobilizon",
+        "version": "4.0.2",
+        "repository": "https://framagit.org/framasoft/mobilizon"
+    },
+    "openRegistrations": true
+}

test/fixtures/nodeinfo/older_versions.json

@@ -0,0 +1,8 @@
+{
+    "links": [
+        {
+            "rel": "http://nodeinfo.diaspora.software/ns/schema/1.1",
+            "href": "https://mobilizon.fr/.well-known/nodeinfo/1.1"
+        }
+    ]
+}

test/fixtures/nodeinfo/regular.json

@@ -1,8 +1,8 @@
 {
     "links": [
         {
-            "rel": "http:\/\/nodeinfo.diaspora.software\/ns\/schema\/2.0",
+            "rel": "http://nodeinfo.diaspora.software/ns/schema/2.0",
-            "href": "https:\/\/event-federation.eu\/wp-json\/activitypub\/1.0\/nodeinfo"
+            "href": "https://event-federation.eu/wp-json/activitypub/1.0/nodeinfo"
         }
     ]
 }

test/fixtures/nodeinfo/wp-data.json

@@ -0,0 +1,24 @@
+{
+    "version": "2.0",
+    "software": {
+        "name": "wordpress",
+        "version": "6.4.2"
+    },
+    "usage": {
+        "users": {
+            "total": 1,
+            "activeMonth": 1,
+            "activeHalfyear": 1
+        },
+        "localPosts": 3,
+        "localComments": 3
+    },
+    "openRegistrations": false,
+    "protocols": [
+        "activitypub"
+    ],
+    "services": {
+        "inbound": [],
+        "outbound": []
+    }
+}

test/fixtures/nodeinfo/wp-event-federation.json

@@ -1,8 +1,8 @@
 {
     "links": [
         {
-            "rel": "http:\/\/nodeinfo.diaspora.software\/ns\/schema\/2.0",
+            "rel": "http://nodeinfo.diaspora.software/ns/schema/2.0",
-            "href": "https:\/\/event-federation.eu\/wp-json\/activitypub\/1.0\/nodeinfo"
+            "href": "https://event-federation.eu/wp-json/activitypub/1.0/nodeinfo"
         },
         {
             "rel": "https://www.w3.org/ns/activitystreams#Application",