Introduce relay

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

config/config.exs

@@ -16,6 +16,7 @@ config :mobilizon, :instance,
   hostname: System.get_env("MOBILIZON_INSTANCE_HOST") || "localhost",
   registrations_open: System.get_env("MOBILIZON_INSTANCE_REGISTRATIONS_OPEN") || false,
   repository: Mix.Project.config()[:source_url],
+  allow_relay: true,
   remote_limit: 100_000,
   upload_limit: 16_000_000,
   avatar_upload_limit: 2_000_000,
@@ -109,6 +110,9 @@ config :auto_linker,
 config :phoenix, :format_encoders, json: Jason, "activity-json": Jason
 config :phoenix, :json_library, Jason
 
+config :http_signatures,
+  adapter: Mobilizon.Service.HTTPSignatures.Signature
+
 config :mobilizon, Mobilizon.Service.Geospatial.Nominatim,
   endpoint:
     System.get_env("GEOSPATIAL_NOMINATIM_ENDPOINT") || "https://nominatim.openstreetmap.org",

config/dev.exs

@@ -11,7 +11,9 @@ config :mobilizon, MobilizonWeb.Endpoint,
     port: System.get_env("MOBILIZON_INSTANCE_PORT") || 4000
   ],
   url: [
-    host: System.get_env("MOBILIZON_INSTANCE_HOST") || "mobilizon.local"
+    host: System.get_env("MOBILIZON_INSTANCE_HOST") || "mobilizon.local",
+    port: 80,
+    scheme: "http"
   ],
   debug_errors: true,
   code_reloader: true,

js/package.json

@@ -56,6 +56,7 @@
     "chai": "^4.2.0",
     "dotenv-webpack": "^1.7.0",
     "eslint": "^6.0.1",
+    "graphql-cli": "^3.0.12",
     "node-sass": "^4.11.0",
     "patch-package": "^6.1.2",
     "sass-loader": "^7.1.0",

js/src/App.vue

@@ -98,6 +98,7 @@ export default class App extends Vue {
 @import "~buefy/src/scss/components/tag";
 @import "~buefy/src/scss/components/taginput";
 @import "~buefy/src/scss/components/upload";
+@import "~buefy/src/scss/components/radio";
 
 .router-enter-active,
 .router-leave-active {

js/src/graphql/event.ts

@@ -145,7 +145,8 @@ export const CREATE_EVENT = gql`
   $beginsOn: DateTime!,
   $picture: PictureInput,
   $tags: [String],
-  $physicalAddress: AddressInput!
+  $physicalAddress: AddressInput,
+  $visibility: EventVisibility
   ) {
     createEvent(
       title: $title,
@@ -155,7 +156,8 @@ export const CREATE_EVENT = gql`
       category: $category,
       picture: $picture,
       tags: $tags,
-      physicalAddress: $physicalAddress
+      physicalAddress: $physicalAddress,
+      visibility: $visibility
     ) {
       id,
       uuid,

js/src/views/Event/Create.vue

@@ -6,6 +6,11 @@
     <div v-if="$apollo.loading">Loading...</div>
     <div class="columns is-centered" v-else>
       <form class="column is-two-thirds-desktop" @submit="createEvent">
+        <h2 class="subtitle">
+          <translate>
+            General informations
+          </translate>
+        </h2>
         <picture-upload v-model="pictureFile" />
 
         <b-field :label="$gettext('Title')">
@@ -34,6 +39,27 @@
           </b-select>
         </b-field>
 
+        <h2 class="subtitle">
+          <translate>
+            Visibility
+          </translate>
+        </h2>
+          <label class="label">{{ $gettext('Event visibility') }}</label>
+          <div class="field">
+            <b-radio v-model="event.visibility"
+                     name="name"
+                     :native-value="EventVisibility.PUBLIC">
+              <translate>Visible everywhere on the web (public)</translate>
+            </b-radio>
+          </div>
+          <div class="field">
+            <b-radio v-model="event.visibility"
+                     name="name"
+                     :native-value="EventVisibility.PRIVATE">
+              <translate>Only accessible through link and search (private)</translate>
+            </b-radio>
+          </div>
+
           <button class="button is-primary">
           <translate>Create my event</translate>
         </button>
@@ -60,6 +86,7 @@ import TagInput from '@/components/Event/TagInput.vue';
 import { TAGS } from '@/graphql/tags';
 import { ITag } from '@/types/tag.model';
 import AddressAutoComplete from '@/components/Event/AddressAutoComplete.vue';
+import { EventVisibility } from '@/types/event.model';
 
 @Component({
   components: { AddressAutoComplete, TagInput, DateTimePicker, PictureUpload, Editor },
@@ -79,6 +106,7 @@ export default class CreateEvent extends Vue {
   categories: string[] = Object.keys(Category);
   event: IEvent = new EventModel();
   pictureFile: File | null = null;
+  EventVisibility = EventVisibility;
 
   created() {
     const now = new Date();

lib/mix/tasks/mobilizon/common.ex

@@ -22,6 +22,11 @@ defmodule Mix.Tasks.Mobilizon.Common do
       end
   end
 
+  def start_mobilizon do
+    Application.put_env(:phoenix, :serve_endpoints, false, persistent: true)
+    {:ok, _} = Application.ensure_all_started(:mobilizon)
+  end
+
   def escape_sh_path(path) do
     ~S(') <> String.replace(path, ~S('), ~S(\')) <> ~S(')
   end

lib/mix/tasks/mobilizon/relay.ex

@@ -0,0 +1,65 @@
+# Portions of this file are derived from Pleroma:
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social>
+# SPDX-License-Identifier: AGPL-3.0-only
+# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/mix/tasks/pleroma/relay.ex
+
+defmodule Mix.Tasks.Mobilizon.Relay do
+  use Mix.Task
+  alias Mobilizon.Service.ActivityPub.Relay
+  alias Mix.Tasks.Mobilizon.Common
+
+  @shortdoc "Manages remote relays"
+  @moduledoc """
+  Manages remote relays
+
+  ## Follow a remote relay
+
+  ``mix mobilizon.relay follow <relay_url>``
+
+  Example: ``mix mobilizon.relay follow  https://example.org/relay``
+
+  ## Unfollow a remote relay
+
+  ``mix mobilizon.relay unfollow <relay_url>``
+
+  Example: ``mix mobilizon.relay unfollow https://example.org/relay``
+  """
+  def run(["follow", target]) do
+    Common.start_mobilizon()
+
+    case Relay.follow(target) do
+      {:ok, _activity} ->
+        # put this task to sleep to allow the genserver to push out the messages
+        :timer.sleep(500)
+
+      {:error, e} ->
+        IO.puts(:stderr, "Error while following #{target}: #{inspect(e)}")
+    end
+  end
+
+  def run(["unfollow", target]) do
+    Common.start_mobilizon()
+
+    case Relay.unfollow(target) do
+      {:ok, _activity} ->
+        # put this task to sleep to allow the genserver to push out the messages
+        :timer.sleep(500)
+
+      {:error, e} ->
+        IO.puts(:stderr, "Error while unfollowing #{target}: #{inspect(e)}")
+    end
+  end
+
+  def run(["accept", target]) do
+    Common.start_mobilizon()
+
+    case Relay.accept(target) do
+      {:ok, _activity} ->
+        # put this task to sleep to allow the genserver to push out the messages
+        :timer.sleep(500)
+
+      {:error, e} ->
+        IO.puts(:stderr, "Error while accept #{target} follow: #{inspect(e)}")
+    end
+  end
+end

lib/mobilizon/actors/actor.ex

@@ -163,7 +163,6 @@ defmodule Mobilizon.Actors.Actor do
       ])
       |> validate_required([
         :url,
-        :outbox_url,
         :inbox_url,
         :type,
         :domain,
@@ -184,6 +183,44 @@ defmodule Mobilizon.Actors.Actor do
     changes
   end
 
+  def relay_creation(%{url: url, preferred_username: preferred_username} = _params) do
+    key = :public_key.generate_key({:rsa, 2048, 65_537})
+    entry = :public_key.pem_entry_encode(:RSAPrivateKey, key)
+    pem = [entry] |> :public_key.pem_encode() |> String.trim_trailing()
+
+    vars = %{
+      "name" => Mobilizon.CommonConfig.get([:instance, :name], "Mobilizon"),
+      "summary" =>
+        Mobilizon.CommonConfig.get(
+          [:instance, :description],
+          "An internal service actor for this Mobilizon instance"
+        ),
+      "url" => url,
+      "keys" => pem,
+      "preferred_username" => preferred_username,
+      "domain" => nil,
+      "inbox_url" => "#{MobilizonWeb.Endpoint.url()}/inbox",
+      "followers_url" => "#{url}/followers",
+      "following_url" => "#{url}/following",
+      "shared_inbox_url" => "#{MobilizonWeb.Endpoint.url()}/inbox",
+      "type" => :Application
+    }
+
+    cast(%Actor{}, vars, [
+      :type,
+      :name,
+      :summary,
+      :url,
+      :keys,
+      :preferred_username,
+      :domain,
+      :inbox_url,
+      :followers_url,
+      :following_url,
+      :shared_inbox_url
+    ])
+  end
+
   @doc """
   Changeset for group creation
   """
@@ -240,6 +277,14 @@ defmodule Mobilizon.Actors.Actor do
       :outbox_url,
       build_url(username, :outbox)
     )
+    |> put_change(
+      :followers_url,
+      build_url(username, :followers)
+    )
+    |> put_change(
+      :following_url,
+      build_url(username, :following)
+    )
     |> put_change(
       :inbox_url,
       build_url(username, :inbox)
@@ -325,16 +370,28 @@ defmodule Mobilizon.Actors.Actor do
     %{total: Task.await(total), elements: Task.await(elements)}
   end
 
-  @spec get_full_followers(struct()) :: list()
+  defp get_full_followers_query(%Actor{id: actor_id} = _actor) do
-  def get_full_followers(%Actor{id: actor_id} = _actor) do
-    Repo.all(
     from(
       a in Actor,
       join: f in Follower,
       on: a.id == f.actor_id,
       where: f.target_actor_id == ^actor_id
     )
-    )
+  end
+
+  @spec get_full_followers(struct()) :: list()
+  def get_full_followers(%Actor{} = actor) do
+    actor
+    |> get_full_followers_query()
+    |> Repo.all()
+  end
+
+  @spec get_full_external_followers(struct()) :: list()
+  def get_full_external_followers(%Actor{} = actor) do
+    actor
+    |> get_full_followers_query()
+    |> where([a], not is_nil(a.domain))
+    |> Repo.all()
   end
 
   @doc """
@@ -404,18 +461,19 @@ defmodule Mobilizon.Actors.Actor do
   Make an actor follow another
   """
   @spec follow(struct(), struct(), boolean()) :: Follower.t() | {:error, String.t()}
-  def follow(%Actor{} = followed, %Actor{} = follower, approved \\ true) do
+  def follow(%Actor{} = followed, %Actor{} = follower, url \\ nil, approved \\ true) do
     with {:suspended, false} <- {:suspended, followed.suspended},
          # Check if followed has blocked follower
          {:already_following, false} <- {:already_following, following?(follower, followed)} do
-      do_follow(follower, followed, approved)
+      do_follow(follower, followed, approved, url)
     else
       {:already_following, %Follower{}} ->
-        {:error,
+        {:error, :already_following,
          "Could not follow actor: you are already following #{followed.preferred_username}"}
 
       {:suspended, _} ->
-        {:error, "Could not follow actor: #{followed.preferred_username} has been suspended"}
+        {:error, :suspended,
+         "Could not follow actor: #{followed.preferred_username} has been suspended"}
     end
   end
 
@@ -433,13 +491,20 @@ defmodule Mobilizon.Actors.Actor do
     end
   end
 
-  @spec do_follow(struct(), struct(), boolean) ::
+  @spec do_follow(struct(), struct(), boolean(), String.t()) ::
           {:ok, Follower.t()} | {:error, Ecto.Changeset.t()}
-  defp do_follow(%Actor{} = follower, %Actor{} = followed, approved) do
+  defp do_follow(%Actor{} = follower, %Actor{} = followed, approved, url) do
+    Logger.info(
+      "Making #{follower.preferred_username} follow #{followed.preferred_username} (approved: #{
+        approved
+      })"
+    )
+
     Actors.create_follower(%{
       "actor_id" => follower.id,
       "target_actor_id" => followed.id,
-      "approved" => approved
+      "approved" => approved,
+      "url" => url
     })
   end
 

lib/mobilizon/actors/actors.ex

@@ -297,7 +297,7 @@ defmodule Mobilizon.Actors do
         {:ok, actor}
 
       err ->
-        Logger.error(inspect(err))
+        Logger.debug(inspect(err))
         {:error, err}
     end
   end
@@ -475,16 +475,16 @@ defmodule Mobilizon.Actors do
   @spec get_or_fetch_by_url(String.t(), bool()) :: {:ok, Actor.t()} | {:error, String.t()}
   def get_or_fetch_by_url(url, preload \\ false) do
     case get_actor_by_url(url, preload) do
-      {:ok, actor} ->
+      {:ok, %Actor{} = actor} ->
         {:ok, actor}
 
       _ ->
         case ActivityPub.make_actor_from_url(url, preload) do
-          {:ok, actor} ->
+          {:ok, %Actor{} = actor} ->
             {:ok, actor}
 
           _ ->
-            Logger.error("Could not fetch by AP id")
+            Logger.warn("Could not fetch by AP id")
             {:error, "Could not fetch by AP id"}
         end
     end
@@ -655,6 +655,18 @@ defmodule Mobilizon.Actors do
     end
   end
 
+  def get_or_create_service_actor_by_url(url, preferred_username \\ "relay") do
+    case get_actor_by_url(url) do
+      {:ok, %Actor{} = actor} ->
+        {:ok, actor}
+
+      _ ->
+        %{url: url, preferred_username: preferred_username}
+        |> Actor.relay_creation()
+        |> Repo.insert()
+    end
+  end
+
   alias Mobilizon.Actors.Member
 
   @doc """
@@ -895,7 +907,7 @@ defmodule Mobilizon.Actors do
   end
 
   @doc """
-  Get a follower by the followed actor and following actor
+  Get a follow by the followed actor and following actor
   """
   @spec get_follower(Actor.t(), Actor.t()) :: Follower.t()
   def get_follower(%Actor{id: followed_id}, %Actor{id: follower_id}) do
@@ -904,6 +916,19 @@ defmodule Mobilizon.Actors do
     )
   end
 
+  @doc """
+  Get a follow by the followed actor and following actor
+  """
+  @spec get_follow_by_url(String.t()) :: Follower.t()
+  def get_follow_by_url(url) do
+    Repo.one(
+      from(f in Follower,
+        where: f.url == ^url,
+        preload: [:actor, :target_actor]
+      )
+    )
+  end
+
   @doc """
   Creates a follower.
 
@@ -1009,7 +1034,7 @@ defmodule Mobilizon.Actors do
 
       {:error, error} ->
         Logger.error("Error while removing an upload file")
-        Logger.error(inspect(error))
+        Logger.debug(inspect(error))
         {:ok, actor}
     end
   end

lib/mobilizon/actors/follower.ex

@@ -7,9 +7,11 @@ defmodule Mobilizon.Actors.Follower do
   alias Mobilizon.Actors.Follower
   alias Mobilizon.Actors.Actor
 
+  @primary_key {:id, :binary_id, autogenerate: true}
+
   schema "followers" do
     field(:approved, :boolean, default: false)
-    field(:score, :integer, default: 1000)
+    field(:url, :string)
     belongs_to(:target_actor, Actor)
     belongs_to(:actor, Actor)
   end
@@ -17,8 +19,34 @@ defmodule Mobilizon.Actors.Follower do
   @doc false
   def changeset(%Follower{} = member, attrs) do
     member
-    |> cast(attrs, [:score, :approved, :target_actor_id, :actor_id])
+    |> cast(attrs, [:url, :approved, :target_actor_id, :actor_id])
-    |> validate_required([:score, :approved, :target_actor_id, :actor_id])
+    |> generate_url()
+    |> validate_required([:url, :approved, :target_actor_id, :actor_id])
     |> unique_constraint(:target_actor_id, name: :followers_actor_target_actor_unique_index)
   end
+
+  # If there's a blank URL that's because we're doing the first insert
+  defp generate_url(%Ecto.Changeset{data: %Follower{url: nil}} = changeset) do
+    case fetch_change(changeset, :url) do
+      {:ok, _url} -> changeset
+      :error -> do_generate_url(changeset)
+    end
+  end
+
+  # Most time just go with the given URL
+  defp generate_url(%Ecto.Changeset{} = changeset), do: changeset
+
+  defp do_generate_url(%Ecto.Changeset{} = changeset) do
+    uuid = Ecto.UUID.generate()
+
+    changeset
+    |> put_change(
+      :url,
+      "#{MobilizonWeb.Endpoint.url()}/follow/#{uuid}"
+    )
+    |> put_change(
+      :id,
+      uuid
+    )
+  end
 end

lib/mobilizon/events/events.ex

@@ -32,7 +32,8 @@ defmodule Mobilizon.Events do
           :tracks,
           :tags,
           :participants,
-          :physical_address
+          :physical_address,
+          :picture
         ]
       )
       |> paginate(page, limit)
@@ -248,7 +249,8 @@ defmodule Mobilizon.Events do
           :tracks,
           :tags,
           :participants,
-          :physical_address
+          :physical_address,
+          :picture
         ]
       )
     )

lib/mobilizon_web/api/events.ex

@@ -9,6 +9,8 @@ defmodule MobilizonWeb.API.Events do
   alias Mobilizon.Service.ActivityPub.Utils, as: ActivityPubUtils
   alias MobilizonWeb.API.Utils
 
+  @visibility %{"PUBLIC" => :public, "PRIVATE" => :private}
+
   @doc """
   Create an event
   """

lib/mobilizon_web/api/follows.ex

@@ -0,0 +1,51 @@
+defmodule MobilizonWeb.API.Follows do
+  @moduledoc """
+  Common API for following, unfollowing, accepting and rejecting stuff.
+  """
+
+  alias Mobilizon.Actors
+  alias Mobilizon.Actors.{Actor, Follower}
+  alias Mobilizon.Service.ActivityPub
+  require Logger
+
+  def follow(%Actor{} = follower, %Actor{} = followed) do
+    case ActivityPub.follow(follower, followed) do
+      {:ok, activity, _} ->
+        {:ok, activity}
+
+      e ->
+        Logger.warn("Error while following actor: #{inspect(e)}")
+        {:error, e}
+    end
+  end
+
+  def unfollow(%Actor{} = follower, %Actor{} = followed) do
+    case ActivityPub.unfollow(follower, followed) do
+      {:ok, activity, _} ->
+        {:ok, activity}
+
+      e ->
+        Logger.warn("Error while unfollowing actor: #{inspect(e)}")
+        {:error, e}
+    end
+  end
+
+  def accept(%Actor{} = follower, %Actor{} = followed) do
+    with %Follower{approved: false, id: follow_id, url: follow_url} = follow <-
+           Actor.following?(follower, followed),
+         activity_follow_url <- "#{MobilizonWeb.Endpoint.url()}/accept/follow/#{follow_id}",
+         data <-
+           ActivityPub.Utils.make_follow_data(followed, follower, follow_url),
+         {:ok, activity, _} <-
+           ActivityPub.accept(
+             %{to: [follower.url], actor: followed.url, object: data},
+             activity_follow_url
+           ),
+         {:ok, %Follower{approved: true}} <- Actors.update_follower(follow, %{"approved" => true}) do
+      {:ok, activity}
+    else
+      %Follower{approved: true} ->
+        {:error, "Follow already accepted"}
+    end
+  end
+end

lib/mobilizon_web/api/utils.ex

@@ -9,7 +9,7 @@ defmodule MobilizonWeb.API.Utils do
   Determines the full audience based on mentions for a public audience
 
   Audience is:
-    * `to` : the mentionned actors, the eventual actor we're replying to and the public
+    * `to` : the mentioned actors, the eventual actor we're replying to and the public
     * `cc` : the actor's followers
   """
   @spec get_to_and_cc(Actor.t(), list(), map(), String.t()) :: {list(), list()}
@@ -72,7 +72,9 @@ defmodule MobilizonWeb.API.Utils do
     end
   end
 
-  def get_to_and_cc(_user, mentions, _inReplyTo, {:list, _}), do: {mentions, []}
+  def get_to_and_cc(_actor, mentions, _inReplyTo, {:list, _}) do
+    {mentions, []}
+  end
 
   #  def get_addressed_users(_, to) when is_list(to) do
   #    Actors.get(to)
@@ -138,7 +140,7 @@ defmodule MobilizonWeb.API.Utils do
            make_content_html(
              content,
              tags,
-             "text/plain"
+             "text/html"
            ),
          mentioned_users <- for({_, mentioned_user} <- mentions, do: mentioned_user.url),
          addressed_users <- get_addressed_users(mentioned_users, nil),

lib/mobilizon_web/controllers/activity_pub_controller.ex

@@ -14,6 +14,19 @@ defmodule MobilizonWeb.ActivityPubController do
 
   action_fallback(:errors)
 
+  plug(:relay_active? when action in [:relay])
+
+  def relay_active?(conn, _) do
+    if Mobilizon.CommonConfig.get([:instance, :allow_relay]) do
+      conn
+    else
+      conn
+      |> put_status(404)
+      |> json("Not found")
+      |> halt()
+    end
+  end
+
   def following(conn, %{"name" => name, "page" => page}) do
     with {page, ""} <- Integer.parse(page),
          %Actor{} = actor <- Actors.get_local_actor_by_name_with_everything(name) do
@@ -67,6 +80,7 @@ defmodule MobilizonWeb.ActivityPubController do
 
   # TODO: Ensure that this inbox is a recipient of the message
   def inbox(%{assigns: %{valid_signature: true}} = conn, params) do
+    Logger.debug("Got something with valid signature inside inbox")
     Federator.enqueue(:incoming_ap_doc, params)
     json(conn, "ok")
   end
@@ -90,19 +104,35 @@ defmodule MobilizonWeb.ActivityPubController do
         "Signature validation error for: #{params["actor"]}, make sure you are forwarding the HTTP Host header!"
       )
 
-      Logger.error(inspect(conn.req_headers))
+      Logger.debug(inspect(conn.req_headers))
     end
 
     json(conn, "error")
   end
 
+  def relay(conn, _params) do
+    with {status, actor} <-
+           Cachex.fetch(
+             :activity_pub,
+             "relay_actor",
+             &Mobilizon.Service.ActivityPub.Relay.get_actor/0
+           ),
+         true <- status in [:ok, :commit] do
+      conn
+      |> put_resp_header("content-type", "application/activity+json")
+      |> json(ActorView.render("actor.json", %{actor: actor}))
+    end
+  end
+
   def errors(conn, {:error, :not_found}) do
     conn
     |> put_status(404)
     |> json("Not found")
   end
 
-  def errors(conn, _e) do
+  def errors(conn, e) do
+    Logger.debug(inspect(e))
+
     conn
     |> put_status(500)
     |> json("Unknown Error")

lib/mobilizon_web/http_signature.ex

@@ -10,7 +10,6 @@ defmodule MobilizonWeb.HTTPSignaturePlug do
   Plug to check HTTP Signatures on every incoming request
   """
 
-  alias Mobilizon.Service.HTTPSignatures
   import Plug.Conn
   require Logger
 
@@ -23,16 +22,11 @@ defmodule MobilizonWeb.HTTPSignaturePlug do
   end
 
   def call(conn, _opts) do
-    actor = conn.params["actor"]
-
-    Logger.debug(fn ->
-      "Checking sig for #{actor}"
-    end)
-
     [signature | _] = get_req_header(conn, "signature")
 
-    cond do
+    if signature do
-      String.contains?(signature, actor) ->
+      # set (request-target) header to the appropriate value
+      # we also replace the digest header with the one we computed
       conn =
         conn
         |> put_req_header(
@@ -40,13 +34,16 @@ defmodule MobilizonWeb.HTTPSignaturePlug do
           String.downcase("#{conn.method}") <> " #{conn.request_path}"
         )
 
+      conn =
+        if conn.assigns[:digest] do
+          conn
+          |> put_req_header("digest", conn.assigns[:digest])
+        else
+          conn
+        end
+
       assign(conn, :valid_signature, HTTPSignatures.validate_conn(conn))
-
+    else
-      signature ->
-        Logger.debug("Signature not from actor")
-        assign(conn, :valid_signature, false)
-
-      true ->
       Logger.debug("No signature header!")
       conn
     end

lib/mobilizon_web/router.ex

@@ -18,6 +18,10 @@ defmodule MobilizonWeb.Router do
     plug(MobilizonWeb.HTTPSignaturePlug)
   end
 
+  pipeline :relay do
+    plug(:accepts, ["activity-json", "json"])
+  end
+
   pipeline :activity_pub do
     plug(:accepts, ["activity-json"])
   end
@@ -97,6 +101,13 @@ defmodule MobilizonWeb.Router do
     post("/inbox", ActivityPubController, :inbox)
   end
 
+  scope "/relay", MobilizonWeb do
+    pipe_through(:relay)
+
+    get("/", ActivityPubController, :relay)
+    post("/inbox", ActivityPubController, :inbox)
+  end
+
   scope "/proxy/", MobilizonWeb do
     pipe_through(:remote_media)
 

lib/mobilizon_web/views/activity_pub/actor_view.ex

@@ -12,12 +12,12 @@ defmodule MobilizonWeb.ActivityPub.ActorView do
     public_key = Mobilizon.Service.ActivityPub.Utils.pem_to_public_key_pem(actor.keys)
 
     %{
-      "id" => Actor.build_url(actor.preferred_username, :page),
+      "id" => actor.url,
-      "type" => "Person",
+      "type" => to_string(actor.type),
-      "following" => Actor.build_url(actor.preferred_username, :following),
+      "following" => actor.following_url,
-      "followers" => Actor.build_url(actor.preferred_username, :followers),
+      "followers" => actor.followers_url,
-      "inbox" => Actor.build_url(actor.preferred_username, :inbox),
+      "inbox" => actor.inbox_url,
-      "outbox" => Actor.build_url(actor.preferred_username, :outbox),
+      "outbox" => actor.outbox_url,
       "preferredUsername" => actor.preferred_username,
       "name" => actor.name,
       "summary" => actor.summary,

lib/mobilizon_web/views/error_view.ex

@@ -31,8 +31,8 @@ defmodule MobilizonWeb.ErrorView do
   # template is found, let's render it as 500
   def template_not_found(template, assigns) do
     require Logger
-    Logger.error("Template not found")
+    Logger.warn("Template not found")
-    Logger.error(inspect(template))
+    Logger.debug(inspect(template))
     render("500.html", assigns)
   end
 end

lib/mobilizon_web/views/page_view.ex

@@ -46,24 +46,8 @@ defmodule MobilizonWeb.PageView do
   end
 
   def render("event.activity-json", %{conn: %{assigns: %{object: event}}}) do
-    event = Mobilizon.Service.ActivityPub.Converters.Event.model_to_as(event)
+    event
-    {:ok, html, []} = Earmark.as_html(event["summary"])
+    |> Mobilizon.Service.ActivityPub.Converters.Event.model_to_as()
-
-    %{
-      "type" => "Event",
-      "attributedTo" => event["actor"],
-      "id" => event["id"],
-      "name" => event["title"],
-      "category" => event["category"],
-      "content" => html,
-      "source" => %{
-        "content" => event["summary"],
-        "mediaType" => "text/markdown"
-      },
-      "mediaType" => "text/html",
-      "published" => event["publish_at"],
-      "updated" => event["updated_at"]
-    }
     |> Map.merge(Utils.make_json_ld_header())
   end
 

lib/service/activity_pub/activity_pub.ex

@@ -21,10 +21,11 @@ defmodule Mobilizon.Service.ActivityPub do
   alias Mobilizon.Actors.Follower
 
   alias Mobilizon.Service.Federator
-  alias Mobilizon.Service.HTTPSignatures
+  alias Mobilizon.Service.HTTPSignatures.Signature
 
   require Logger
   import Mobilizon.Service.ActivityPub.Utils
+  import Mobilizon.Service.ActivityPub.Visibility
 
   @doc """
   Get recipients for an activity or object
@@ -42,10 +43,6 @@ defmodule Mobilizon.Service.ActivityPub do
   def insert(map, local \\ true) when is_map(map) do
     with map <- lazy_put_activity_defaults(map),
          {:ok, object} <- insert_full_object(map) do
-      object_id = if is_map(map["object"]), do: map["object"]["id"], else: map["id"]
-
-      map = if local, do: Map.put(map, "id", "#{object_id}/activity"), else: map
-
       activity = %Activity{
         data: map,
         local: local,
@@ -94,7 +91,7 @@ defmodule Mobilizon.Service.ActivityPub do
          {:ok, _activity, %{url: object_url} = _object} <- Transmogrifier.handle_incoming(params) do
       case data["type"] do
         "Event" ->
-          {:ok, Events.get_event_by_url!(object_url)}
+          {:ok, Events.get_event_full_by_url!(object_url)}
 
         "Note" ->
           {:ok, Events.get_comment_full_from_url!(object_url)}
@@ -107,15 +104,17 @@ defmodule Mobilizon.Service.ActivityPub do
       end
     else
       {:existing_event, %Event{url: event_url}} ->
-        {:ok, Events.get_event_by_url!(event_url)}
+        {:ok, Events.get_event_full_by_url!(event_url)}
 
       {:existing_comment, %Comment{url: comment_url}} ->
         {:ok, Events.get_comment_full_from_url!(comment_url)}
 
-      {:existing_actor, %Actor{url: actor_url}} ->
+      {:existing_actor, {:ok, %Actor{url: actor_url}}} ->
         {:ok, Actors.get_actor_by_url!(actor_url, true)}
 
       e ->
+        require Logger
+        Logger.error(inspect(e))
         {:error, e}
     end
   end
@@ -137,24 +136,40 @@ defmodule Mobilizon.Service.ActivityPub do
              %{to: to, actor: actor, published: published, object: object},
              additional
            ),
-         :ok <- Logger.debug(inspect(create_data)),
          {:ok, activity, object} <- insert(create_data, local),
          :ok <- maybe_federate(activity) do
       # {:ok, actor} <- Actors.increase_event_count(actor) do
       {:ok, activity, object}
     else
       err ->
-        Logger.error("Something went wrong")
+        Logger.error("Something went wrong while creating an activity")
-        Logger.error(inspect(err))
+        Logger.debug(inspect(err))
         err
     end
   end
 
-  def accept(%{to: to, actor: actor, object: object} = params) do
+  def accept(%{to: to, actor: actor, object: object} = params, activity_follow_id \\ nil) do
     # only accept false as false value
     local = !(params[:local] == false)
 
-    with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
+    with data <- %{
+           "to" => to,
+           "type" => "Accept",
+           "actor" => actor,
+           "object" => object,
+           "id" => activity_follow_id || get_url(object) <> "/activity"
+         },
+         {:ok, activity, object} <- insert(data, local),
+         :ok <- maybe_federate(activity) do
+      {:ok, activity, object}
+    end
+  end
+
+  def reject(%{to: to, actor: actor, object: object} = params) do
+    # only accept false as false value
+    local = !(params[:local] == false)
+
+    with data <- %{"to" => to, "type" => "Reject", "actor" => actor.url, "object" => object},
          {:ok, activity, object} <- insert(data, local),
          :ok <- maybe_federate(activity) do
       {:ok, activity, object}
@@ -168,6 +183,7 @@ defmodule Mobilizon.Service.ActivityPub do
     with data <- %{
            "to" => to,
            "cc" => cc,
+           "id" => object["url"],
            "type" => "Update",
            "actor" => actor,
            "object" => object
@@ -215,55 +231,56 @@ defmodule Mobilizon.Service.ActivityPub do
   #   end
   # end
 
-  # def announce(
+  def announce(
-  #       %Actor{} = actor,
+        %Actor{} = actor,
-  #       object,
+        object,
-  #       activity_id \\ nil,
+        activity_id \\ nil,
-  #       local \\ true
+        local \\ true,
-  #     ) do
+        public \\ true
-  #   #with true <- is_public?(object),
+      ) do
-  #        with announce_data <- make_announce_data(actor, object, activity_id),
+    with true <- is_public?(object),
-  #        {:ok, activity, object} <- insert(announce_data, local),
+         announce_data <- make_announce_data(actor, object, activity_id, public),
-  #       #  {:ok, object} <- add_announce_to_object(activity, object),
+         {:ok, activity, object} <- insert(announce_data, local),
-  #        :ok <- maybe_federate(activity) do
+         :ok <- maybe_federate(activity) do
-  #     {:ok, activity, object}
+      {:ok, activity, object}
-  #   else
+    else
-  #     error -> {:error, error}
+      error ->
-  #   end
+        {:error, error}
-  # end
+    end
+  end
 
-  # def unannounce(
+  def unannounce(
-  #       %Actor{} = actor,
+        %Actor{} = actor,
-  #       object,
+        object,
-  #       activity_id \\ nil,
+        activity_id \\ nil,
-  #       local \\ true
+        cancelled_activity_id \\ nil,
-  #     ) do
+        local \\ true
-  #   with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
+      ) do
-  #        unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
+    with announce_activity <- make_announce_data(actor, object, cancelled_activity_id),
-  #        {:ok, unannounce_activity, _object} <- insert(unannounce_data, local),
+         unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
-  #        :ok <- maybe_federate(unannounce_activity),
+         {:ok, unannounce_activity, _object} <- insert(unannounce_data, local),
-  #        {:ok, _activity} <- Repo.delete(announce_activity),
+         :ok <- maybe_federate(unannounce_activity) do
-  #        {:ok, object} <- remove_announce_from_object(announce_activity, object) do
+      {:ok, unannounce_activity, object}
-  #     {:ok, unannounce_activity, object}
+    else
-  #   else
+      _e -> {:ok, object}
-  #     _e -> {:ok, object}
+    end
-  #   end
+  end
-  # end
 
   @doc """
   Make an actor follow another
   """
   def follow(%Actor{} = follower, %Actor{} = followed, activity_id \\ nil, local \\ true) do
-    with {:ok, %Follower{id: follow_id}} <- Actor.follow(followed, follower, true),
+    with {:ok, %Follower{url: follow_url}} <-
+           Actor.follow(followed, follower, activity_id, false),
          activity_follow_id <-
-           activity_id || "#{MobilizonWeb.Endpoint.url()}/follow/#{follow_id}/activity",
+           activity_id || follow_url,
          data <- make_follow_data(followed, follower, activity_follow_id),
          {:ok, activity, object} <- insert(data, local),
          :ok <- maybe_federate(activity) do
       {:ok, activity, object}
     else
-      {err, _} when err in [:already_following, :suspended] ->
+      {:error, err, msg} when err in [:already_following, :suspended] ->
-        {:error, err}
+        {:error, msg}
     end
   end
 
@@ -271,18 +288,26 @@ defmodule Mobilizon.Service.ActivityPub do
   Make an actor unfollow another
   """
   @spec unfollow(Actor.t(), Actor.t(), String.t(), boolean()) :: {:ok, map()} | any()
-  def unfollow(%Actor{} = followed, %Actor{} = follower, activity_id \\ nil, local \\ true) do
+  def unfollow(%Actor{} = follower, %Actor{} = followed, activity_id \\ nil, local \\ true) do
     with {:ok, %Follower{id: follow_id}} <- Actor.unfollow(followed, follower),
          # We recreate the follow activity
-         data <- make_follow_data(followed, follower, follow_id),
+         data <-
+           make_follow_data(
+             followed,
+             follower,
+             "#{MobilizonWeb.Endpoint.url()}/follow/#{follow_id}/activity"
+           ),
          {:ok, follow_activity, _object} <- insert(data, local),
-         unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
+         activity_unfollow_id <-
+           activity_id || "#{MobilizonWeb.Endpoint.url()}/unfollow/#{follow_id}/activity",
+         unfollow_data <-
+           make_unfollow_data(follower, followed, follow_activity, activity_unfollow_id),
          {:ok, activity, object} <- insert(unfollow_data, local),
          :ok <- maybe_federate(activity) do
       {:ok, activity, object}
     else
       err ->
-        Logger.error(inspect(err))
+        Logger.debug("Error while unfollowing an actor #{inspect(err)}")
         err
     end
   end
@@ -294,7 +319,8 @@ defmodule Mobilizon.Service.ActivityPub do
       "type" => "Delete",
       "actor" => actor.url,
       "object" => url,
-      "to" => [actor.url <> "/followers", "https://www.w3.org/ns/activitystreams#Public"]
+      "to" => [actor.url <> "/followers", "https://www.w3.org/ns/activitystreams#Public"],
+      "id" => url <> "/delete"
     }
 
     with {:ok, _} <- Events.delete_event(event),
@@ -309,6 +335,7 @@ defmodule Mobilizon.Service.ActivityPub do
       "type" => "Delete",
       "actor" => actor.url,
       "object" => url,
+      "id" => url <> "/delete",
       "to" => [actor.url <> "/followers", "https://www.w3.org/ns/activitystreams#Public"]
     }
 
@@ -324,6 +351,7 @@ defmodule Mobilizon.Service.ActivityPub do
       "type" => "Delete",
       "actor" => url,
       "object" => url,
+      "id" => url <> "/delete",
       "to" => [url <> "/followers", "https://www.w3.org/ns/activitystreams#Public"]
     }
 
@@ -366,11 +394,11 @@ defmodule Mobilizon.Service.ActivityPub do
 
       # Request returned 410
       {:error, :actor_deleted} ->
+        Logger.info("Actor was deleted")
         {:error, :actor_deleted}
 
       e ->
-        Logger.error("Failed to make actor from url")
+        Logger.warn("Failed to make actor from url")
-        Logger.error(inspect(e))
         {:error, e}
     end
   end
@@ -414,10 +442,18 @@ defmodule Mobilizon.Service.ActivityPub do
   """
   def publish(actor, activity) do
     Logger.debug("Publishing an activity")
+    Logger.debug(inspect(activity))
+
+    public = is_public?(activity)
+
+    if public && Mobilizon.CommonConfig.get([:instance, :allow_relay]) do
+      Logger.info(fn -> "Relaying #{activity.data["id"]} out" end)
+      Mobilizon.Service.ActivityPub.Relay.publish(activity)
+    end
 
     followers =
       if actor.followers_url in activity.recipients do
-        Actor.get_full_followers(actor) |> Enum.filter(fn follower -> is_nil(follower.domain) end)
+        Actor.get_full_external_followers(actor)
       else
         []
       end
@@ -448,15 +484,16 @@ defmodule Mobilizon.Service.ActivityPub do
     Logger.info("Federating #{id} to #{inbox}")
     %URI{host: host, path: path} = URI.parse(inbox)
 
-    digest = HTTPSignatures.build_digest(json)
+    digest = Signature.build_digest(json)
-    date = HTTPSignatures.generate_date_header()
+    date = Signature.generate_date_header()
-    request_target = HTTPSignatures.generate_request_target("POST", path)
+    # request_target = Signature.generate_request_target("POST", path)
 
     signature =
-      HTTPSignatures.sign(actor, %{
+      Signature.sign(actor, %{
         host: host,
         "content-length": byte_size(json),
-        "(request-target)": request_target,
+        # TODO : Look me up in depth why Pleroma handles this inside lib/mobilizon_web/http_signature.ex
+        # "(request-target)": request_target,
         digest: digest,
         date: date
       })
@@ -478,20 +515,27 @@ defmodule Mobilizon.Service.ActivityPub do
   @spec fetch_and_prepare_actor_from_url(String.t()) :: {:ok, struct()} | {:error, atom()} | any()
   defp fetch_and_prepare_actor_from_url(url) do
     Logger.debug("Fetching and preparing actor from url")
+    Logger.debug(inspect(url))
 
-    with {:ok, %HTTPoison.Response{status_code: 200, body: body}} <-
+    res =
-           HTTPoison.get(url, [Accept: "application/activity+json"], follow_redirect: true),
+      with %HTTPoison.Response{status_code: 200, body: body} <-
+             HTTPoison.get!(url, [Accept: "application/activity+json"], follow_redirect: true),
+           :ok <- Logger.debug("response okay, now decoding json"),
            {:ok, data} <- Jason.decode(body) do
+        Logger.debug("Got activity+json response at actor's endpoint, now converting data")
         actor_data_from_actor_object(data)
       else
         # Actor is gone, probably deleted
         {:ok, %HTTPoison.Response{status_code: 410}} ->
+          Logger.info("Response HTTP 410")
           {:error, :actor_deleted}
 
         e ->
-        Logger.error("Could not decode actor at fetch #{url}, #{inspect(e)}")
+          Logger.warn("Could not decode actor at fetch #{url}, #{inspect(e)}")
-        e
+          {:error, e}
       end
+
+    res
   end
 
   @doc """

lib/service/activity_pub/converter.ex

@@ -7,3 +7,10 @@ defmodule Mobilizon.Service.ActivityPub.Converter do
   @callback as_to_model_data(map()) :: map()
   @callback model_to_as(struct()) :: map()
 end
+
+defprotocol Mobilizon.Service.ActivityPub.Convertible do
+  @type activitystreams :: map()
+
+  @spec model_to_as(t) :: activitystreams
+  def model_to_as(convertible)
+end

lib/service/activity_pub/converters/actor.ex

@@ -45,3 +45,9 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Actor do
     }
   end
 end
+
+defimpl Mobilizon.Service.ActivityPub.Convertible, for: Mobilizon.Actors.Actor do
+  alias Mobilizon.Service.ActivityPub.Converters.Actor, as: ActorConverter
+
+  defdelegate model_to_as(actor), to: ActorConverter
+end

lib/service/activity_pub/converters/address.ex

@@ -52,7 +52,29 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Address do
   """
   @impl Converter
   @spec model_to_as(AddressModel.t()) :: map()
-  def model_to_as(%AddressModel{} = _address) do
+  def model_to_as(%AddressModel{} = address) do
-    nil
+    res = %{
+      "type" => "Place",
+      "name" => address.description,
+      "id" => address.url,
+      "address" => %{
+        "type" => "PostalAddress",
+        "streetAddress" => address.street,
+        "postalCode" => address.postal_code,
+        "addressLocality" => address.locality,
+        "addressRegion" => address.region,
+        "addressCountry" => address.country
+      }
+    }
+
+    if is_nil(address.geom) do
+      res
+    else
+      Map.put(res, "geo", %{
+        "type" => "GeoCoordinates",
+        "latitude" => address.geom.coordinates |> elem(0),
+        "longitude" => address.geom.coordinates |> elem(1)
+      })
+    end
   end
 end

lib/service/activity_pub/converters/comment.ex

@@ -84,7 +84,7 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Comment do
       "actor" => comment.actor.url,
       "attributedTo" => comment.actor.url,
       "uuid" => comment.uuid,
-      "id" => Routes.page_url(Endpoint, :comment, comment.uuid)
+      "id" => comment.url
     }
 
     if comment.in_reply_to_comment do
@@ -94,3 +94,9 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Comment do
     end
   end
 end
+
+defimpl Mobilizon.Service.ActivityPub.Convertible, for: Mobilizon.Events.Comment do
+  alias Mobilizon.Service.ActivityPub.Converters.Comment, as: CommentConverter
+
+  defdelegate model_to_as(comment), to: CommentConverter
+end

lib/service/activity_pub/converters/event.ex

@@ -10,6 +10,8 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Event do
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Events.Event, as: EventModel
   alias Mobilizon.Service.ActivityPub.Converter
+  alias Mobilizon.Service.ActivityPub.Converters.Address, as: AddressConverter
+  alias Mobilizon.Service.ActivityPub.Utils
   alias Mobilizon.Events
   alias Mobilizon.Events.Tag
   alias Mobilizon.Addresses
@@ -26,6 +28,7 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Event do
   @spec as_to_model_data(map()) :: map()
   def as_to_model_data(object) do
     Logger.debug("event as_to_model_data")
+    Logger.debug(inspect(object))
 
     with {:actor, {:ok, %Actor{id: actor_id}}} <-
            {:actor, Actors.get_actor_by_url(object["actor"])},
@@ -99,6 +102,8 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Event do
   end
 
   defp fetch_tags(tags) do
+    Logger.debug("fetching tags")
+
     Enum.reduce(tags, [], fn tag, acc ->
       with true <- tag["type"] == "Hashtag",
            {:ok, %Tag{} = tag} <- Events.get_or_create_tag(tag) do
@@ -110,23 +115,62 @@ defmodule Mobilizon.Service.ActivityPub.Converters.Event do
     end)
   end
 
+  defp build_tags(tags) do
+    Enum.map(tags, fn %Tag{} = tag ->
+      %{
+        "href" => MobilizonWeb.Endpoint.url() <> "/tags/#{tag.slug}",
+        "name" => "##{tag.title}",
+        "type" => "Hashtag"
+      }
+    end)
+  end
+
   @doc """
   Convert an event struct to an ActivityStream representation
   """
   @impl Converter
   @spec model_to_as(EventModel.t()) :: map()
   def model_to_as(%EventModel{} = event) do
-    %{
+    to =
+      if event.visibility == :public,
+        do: ["https://www.w3.org/ns/activitystreams#Public"],
+        else: [event.organizer_actor.followers_url]
+
+    res = %{
       "type" => "Event",
-      "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+      "to" => to,
-      "title" => event.title,
+      "cc" => [],
+      "attributedTo" => event.organizer_actor.url,
+      "name" => event.title,
       "actor" => event.organizer_actor.url,
       "uuid" => event.uuid,
       "category" => event.category,
-      "summary" => event.description,
+      "content" => event.description,
-      "publish_at" => (event.publish_at || event.inserted_at) |> DateTime.to_iso8601(),
+      "publish_at" => (event.publish_at || event.inserted_at) |> date_to_string(),
-      "updated_at" => event.updated_at |> DateTime.to_iso8601(),
+      "updated_at" => event.updated_at |> date_to_string(),
+      "mediaType" => "text/html",
+      "startTime" => event.begins_on |> date_to_string(),
+      "endTime" => event.ends_on |> date_to_string(),
+      "tag" => event.tags |> build_tags(),
       "id" => event.url
     }
+
+    res =
+      if is_nil(event.physical_address),
+        do: res,
+        else: Map.put(res, "location", AddressConverter.model_to_as(event.physical_address))
+
+    if is_nil(event.picture),
+      do: res,
+      else: Map.put(res, "attachment", [Utils.make_picture_data(event.picture)])
   end
+
+  defp date_to_string(nil), do: nil
+  defp date_to_string(date), do: DateTime.to_iso8601(date)
+end
+
+defimpl Mobilizon.Service.ActivityPub.Convertible, for: Mobilizon.Events.Event do
+  alias Mobilizon.Service.ActivityPub.Converters.Event, as: EventConverter
+
+  defdelegate model_to_as(event), to: EventConverter
 end

lib/service/activity_pub/relay.ex

@@ -0,0 +1,88 @@
+# Portions of this file are derived from Pleroma:
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social>
+# SPDX-License-Identifier: AGPL-3.0-only
+# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/web/activity_pub/relay.ex
+
+defmodule Mobilizon.Service.ActivityPub.Relay do
+  @moduledoc """
+  Handles following and unfollowing relays and instances
+  """
+
+  alias Mobilizon.Activity
+  alias Mobilizon.Actors
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Service.ActivityPub
+  alias MobilizonWeb.API.Follows
+  require Logger
+
+  def get_actor do
+    with {:ok, %Actor{} = actor} <-
+           Actors.get_or_create_service_actor_by_url("#{MobilizonWeb.Endpoint.url()}/relay") do
+      actor
+    end
+  end
+
+  def follow(target_instance) do
+    with %Actor{} = local_actor <- get_actor(),
+         {:ok, %Actor{} = target_actor} <- Actors.get_or_fetch_by_url(target_instance),
+         {:ok, activity} <- Follows.follow(local_actor, target_actor) do
+      Logger.info("Relay: followed instance #{target_instance}; id=#{activity.data["id"]}")
+      {:ok, activity}
+    else
+      e ->
+        Logger.warn("Error while following remote instance: #{inspect(e)}")
+        {:error, e}
+    end
+  end
+
+  def unfollow(target_instance) do
+    with %Actor{} = local_actor <- get_actor(),
+         {:ok, %Actor{} = target_actor} <- Actors.get_or_fetch_by_url(target_instance),
+         {:ok, activity} <- Follows.unfollow(local_actor, target_actor) do
+      Logger.info("Relay: unfollowed instance #{target_instance}: id=#{activity.data["id"]}")
+      {:ok, activity}
+    else
+      e ->
+        Logger.warn("Error while unfollowing remote instance: #{inspect(e)}")
+        {:error, e}
+    end
+  end
+
+  def accept(target_instance) do
+    with %Actor{} = local_actor <- get_actor(),
+         {:ok, %Actor{} = target_actor} <- Actors.get_or_fetch_by_url(target_instance),
+         {:ok, activity} <- Follows.accept(target_actor, local_actor) do
+      {:ok, activity}
+    end
+  end
+
+  #  def reject(target_instance) do
+  #    with %Actor{} = local_actor <- get_actor(),
+  #         {:ok, %Actor{} = target_actor} <- Actors.get_or_fetch_by_url(target_instance),
+  #         {:ok, activity} <- Follows.reject(target_actor, local_actor) do
+  #      {:ok, activity}
+  #    end
+  #  end
+
+  @doc """
+  Publish an activity to all relays following this instance
+  """
+  def publish(%Activity{data: %{"object" => object}} = _activity) do
+    with %Actor{id: actor_id} = actor <- get_actor(),
+         {:ok, object} <-
+           Mobilizon.Service.ActivityPub.Transmogrifier.fetch_obj_helper_as_activity_streams(
+             object
+           ) do
+      ActivityPub.announce(actor, object, "#{object["id"]}/announces/#{actor_id}", true, false)
+    else
+      e ->
+        Logger.error("Error while getting local instance actor: #{inspect(e)}")
+    end
+  end
+
+  def publish(err) do
+    Logger.error("Tried to publish a bad activity")
+    Logger.debug(inspect(err))
+    nil
+  end
+end

lib/service/activity_pub/transmogrifier.ex

@@ -8,11 +8,12 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
   A module to handle coding from internal to wire ActivityPub and back.
   """
   alias Mobilizon.Actors
-  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Actors.{Actor, Follower}
   alias Mobilizon.Events
   alias Mobilizon.Events.{Event, Comment}
   alias Mobilizon.Service.ActivityPub
   alias Mobilizon.Service.ActivityPub.Utils
+  alias Mobilizon.Service.ActivityPub.Visibility
 
   require Logger
 
@@ -45,7 +46,8 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
     |> Map.put("actor", object["attributedTo"])
     |> fix_attachments
     |> fix_in_reply_to
-    |> fix_tag
+
+    # |> fix_tag
   end
 
   def fix_in_reply_to(%{"inReplyTo" => in_reply_to} = object)
@@ -69,8 +71,7 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
 
   def fix_in_reply_to(%{"inReplyTo" => in_reply_to} = object)
       when not is_nil(in_reply_to) do
-    Logger.error("inReplyTo ID seem incorrect")
+    Logger.warn("inReplyTo ID seem incorrect: #{inspect(in_reply_to)}")
-    Logger.error(inspect(in_reply_to))
     do_fix_in_reply_to("", object)
   end
 
@@ -87,7 +88,7 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
         object
 
       e ->
-        Logger.error("Couldn't fetch #{in_reply_to_id} #{inspect(e)}")
+        Logger.warn("Couldn't fetch #{in_reply_to_id} #{inspect(e)}")
         object
     end
   end
@@ -116,6 +117,9 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
     |> Map.put("tag", combined)
   end
 
+  def handle_incoming(%{"id" => nil}), do: :error
+  def handle_incoming(%{"id" => ""}), do: :error
+
   def handle_incoming(%{"type" => "Flag"} = data) do
     with params <- Mobilizon.Service.ActivityPub.Converters.Flag.as_to_model(data) do
       params = %{
@@ -186,13 +190,69 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
     with {:ok, %Actor{} = followed} <- Actors.get_or_fetch_by_url(followed, true),
          {:ok, %Actor{} = follower} <- Actors.get_or_fetch_by_url(follower),
          {:ok, activity, object} <- ActivityPub.follow(follower, followed, id, false) do
-      ActivityPub.accept(%{to: [follower.url], actor: followed.url, object: data, local: true})
-
       {:ok, activity, object}
     else
       e ->
-        Logger.error("Unable to handle Follow activity")
+        Logger.warn("Unable to handle Follow activity #{inspect(e)}")
-        Logger.error(inspect(e))
+        :error
+    end
+  end
+
+  # TODO : Handle object being a Link
+  def handle_incoming(
+        %{
+          "type" => "Accept",
+          "object" => follow_object,
+          "actor" => _actor,
+          "id" => _id
+        } = data
+      ) do
+    with followed_actor_url <- get_actor(data),
+         {:ok, %Actor{} = followed} <- Actors.get_or_fetch_by_url(followed_actor_url),
+         {:ok, %Follower{approved: false, actor: follower, id: follow_id} = follow} <-
+           get_follow(follow_object),
+         {:ok, activity, _} <-
+           ActivityPub.accept(
+             %{
+               to: [follower.url],
+               actor: followed.url,
+               object: follow_object,
+               local: false
+             },
+             "#{MobilizonWeb.Endpoint.url()}/accept/follow/#{follow_id}"
+           ),
+         {:ok, %Follower{approved: true}} <- Actors.update_follower(follow, %{"approved" => true}) do
+      {:ok, activity, follow}
+    else
+      {:ok, %Follower{approved: true} = _follow} ->
+        {:error, "Follow already accepted"}
+
+      e ->
+        Logger.warn("Unable to process Accept Follow activity #{inspect(e)}")
+        :error
+    end
+  end
+
+  def handle_incoming(
+        %{"type" => "Reject", "object" => follow_object, "actor" => _actor, "id" => _id} = data
+      ) do
+    with followed_actor_url <- get_actor(data),
+         {:ok, %Actor{} = followed} <- Actors.get_or_fetch_by_url(followed_actor_url),
+         {:ok, %Follower{approved: false, actor: follower, id: follow_id} = follow} <-
+           get_follow(follow_object),
+         {:ok, activity, object} <-
+           ActivityPub.reject(%{
+             to: [follower.url],
+             type: "Reject",
+             actor: followed,
+             object: follow_object,
+             local: false
+           }),
+         {:ok, _follower} <- Actor.unfollow(followed, follower) do
+      {:ok, activity, object}
+    else
+      e ->
+        Logger.debug(inspect(e))
         :error
     end
   end
@@ -211,19 +271,21 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
   #    end
   #  end
   # #
-  # def handle_incoming(
+  def handle_incoming(
-  #       %{"type" => "Announce", "object" => object_id, "actor" => actor, "id" => id} = data
+        %{"type" => "Announce", "object" => object_id, "actor" => actor, "id" => id} = data
-  #     ) do
+      ) do
-  #   with actor <- get_actor(data),
+    with actor <- get_actor(data),
-  #        {:ok, %Actor{} = actor} <- Actors.get_or_fetch_by_url(actor),
+         {:ok, %Actor{} = actor} <- Actors.get_or_fetch_by_url(actor),
-  #        {:ok, object} <- get_obj_helper(object_id) || fetch_obj_helper(object_id),
+         {:ok, object} <- fetch_obj_helper_as_activity_streams(object_id),
-  #        {:ok, activity, _object} <- ActivityPub.announce(actor, object, id, false) do
+         public <- Visibility.is_public?(data),
-  #     {:ok, activity}
+         {:ok, activity, object} <- ActivityPub.announce(actor, object, id, false, public) do
-  #   else
+      {:ok, activity, object}
-  #     e -> Logger.error(inspect e)
+    else
-  #       :error
+      e ->
-  #   end
+        Logger.debug(inspect(e))
-  # end
+        :error
+    end
+  end
 
   def handle_incoming(
         %{"type" => "Update", "object" => %{"type" => object_type} = object, "actor" => _actor_id} =
@@ -245,28 +307,33 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
         })
 
       e ->
-        Logger.error(inspect(e))
+        Logger.debug(inspect(e))
         :error
     end
   end
 
-  # def handle_incoming(
+  def handle_incoming(
-  #       %{
+        %{
-  #         "type" => "Undo",
+          "type" => "Undo",
-  #         "object" => %{"type" => "Announce", "object" => object_id},
+          "object" => %{
-  #         "actor" => actor,
+            "type" => "Announce",
-  #         "id" => id
+            "object" => object_id,
-  #       } = data
+            "id" => cancelled_activity_id
-  #     ) do
+          },
-  #   with actor <- get_actor(data),
+          "actor" => actor,
-  #        {:ok, %Actor{} = actor} <- Actors.get_or_fetch_by_url(actor),
+          "id" => id
-  #        {:ok, object} <- get_obj_helper(object_id) || fetch_obj_helper(object_id),
+        } = data
-  #        {:ok, activity, _} <- ActivityPub.unannounce(actor, object, id, false) do
+      ) do
-  #     {:ok, activity}
+    with actor <- get_actor(data),
-  #   else
+         {:ok, %Actor{} = actor} <- Actors.get_or_fetch_by_url(actor),
-  #     _e -> :error
+         {:ok, object} <- fetch_obj_helper_as_activity_streams(object_id),
-  #   end
+         {:ok, activity, object} <-
-  # end
+           ActivityPub.unannounce(actor, object, id, cancelled_activity_id, false) do
+      {:ok, activity, object}
+    else
+      _e -> :error
+    end
+  end
 
   def handle_incoming(
         %{
@@ -278,12 +345,11 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
       ) do
     with {:ok, %Actor{domain: nil} = followed} <- Actors.get_actor_by_url(followed),
          {:ok, %Actor{} = follower} <- Actors.get_actor_by_url(follower),
-         {:ok, activity, object} <- ActivityPub.unfollow(followed, follower, id, false) do
+         {:ok, activity, object} <- ActivityPub.unfollow(follower, followed, id, false) do
-      Actor.unfollow(follower, followed)
       {:ok, activity, object}
     else
       e ->
-        Logger.error(inspect(e))
+        Logger.debug(inspect(e))
         :error
     end
   end
@@ -300,14 +366,14 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
 
     with actor <- get_actor(data),
          {:ok, %Actor{url: _actor_url}} <- Actors.get_actor_by_url(actor),
-         {:ok, object} <- get_obj_helper(object_id) || fetch_obj_helper(object_id),
+         {:ok, object} <- fetch_obj_helper(object_id),
          #  TODO : Validate that DELETE comes indeed form right domain (see above)
          #  :ok <- contain_origin(actor_url, object.data),
          {:ok, activity, object} <- ActivityPub.delete(object, false) do
       {:ok, activity, object}
     else
       e ->
-        Logger.error(inspect(e))
+        Logger.debug(inspect(e))
         :error
     end
   end
@@ -327,7 +393,7 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
   #     ) do
   #   with actor <- get_actor(data),
   #        %Actor{} = actor <- Actors.get_or_fetch_by_url(actor),
-  #        {:ok, object} <- get_obj_helper(object_id) || fetch_obj_helper(object_id),
+  #        {:ok, object} <- fetch_obj_helper(object_id) || fetch_obj_helper(object_id),
   #        {:ok, activity, _, _} <- ActivityPub.unlike(actor, object, id, false) do
   #     {:ok, activity}
   #   else
@@ -340,6 +406,20 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
     {:error, :not_supported}
   end
 
+  defp get_follow(follow_object) do
+    with follow_object_id when not is_nil(follow_object_id) <- Utils.get_url(follow_object),
+         {:not_found, %Follower{} = follow} <-
+           {:not_found, Actors.get_follow_by_url(follow_object_id)} do
+      {:ok, follow}
+    else
+      {:not_found, err} ->
+        {:error, "Follow URL not found"}
+
+      _ ->
+        {:error, "ActivityPub ID not found in Accept Follow object"}
+    end
+  end
+
   def set_reply_to_uri(%{"inReplyTo" => in_reply_to} = object) do
     with false <- String.starts_with?(in_reply_to, "http"),
          {:ok, replied_to_object} <- fetch_obj_helper(in_reply_to) do
@@ -523,50 +603,23 @@ defmodule Mobilizon.Service.ActivityPub.Transmogrifier do
   #    |> Map.put("attachment", attachments)
   #  end
 
-  @spec fetch_obj_helper(String.t()) :: {:ok, %Event{}} | {:ok, %Comment{}} | {:error, any()}
+  @spec fetch_obj_helper(map() | String.t()) :: Event.t() | Comment.t() | Actor.t() | any()
-  def fetch_obj_helper(url) when is_bitstring(url), do: ActivityPub.fetch_object_from_url(url)
+  def fetch_obj_helper(object) do
+    Logger.debug("Fetching object #{inspect(object)}")
 
-  @spec fetch_obj_helper(map()) :: {:ok, %Event{}} | {:ok, %Comment{}} | {:error, any()}
+    case object |> Utils.get_url() |> ActivityPub.fetch_object_from_url() do
-  def fetch_obj_helper(obj) when is_map(obj), do: ActivityPub.fetch_object_from_url(obj["id"])
+      {:ok, object} ->
+        {:ok, object}
 
-  @spec get_obj_helper(String.t()) :: {:ok, struct()} | nil
+      err ->
-  def get_obj_helper(id) do
+        Logger.info("Error while fetching #{inspect(object)}")
-    if object = normalize(id), do: {:ok, object}, else: nil
+        {:error, err}
-  end
-
-  @spec normalize(map()) :: struct() | nil
-  def normalize(obj) when is_map(obj), do: get_anything_by_url(obj["id"])
-
-  @spec normalize(String.t()) :: struct() | nil
-  def normalize(url) when is_binary(url), do: get_anything_by_url(url)
-
-  @spec normalize(any()) :: nil
-  def normalize(_), do: nil
-
-  @spec normalize(String.t()) :: struct() | nil
-  def get_anything_by_url(url) do
-    Logger.debug(fn -> "Getting anything from url #{url}" end)
-    get_actor_url(url) || get_event_url(url) || get_comment_url(url)
-  end
-
-  defp get_actor_url(url) do
-    case Actors.get_actor_by_url(url) do
-      {:ok, %Actor{} = actor} -> actor
-      _ -> nil
     end
   end
 
-  defp get_event_url(url) do
+  def fetch_obj_helper_as_activity_streams(object) do
-    case Events.get_event_by_url(url) do
+    with {:ok, object} <- fetch_obj_helper(object) do
-      {:ok, %Event{} = event} -> event
+      {:ok, Mobilizon.Service.ActivityPub.Convertible.model_to_as(object)}
-      _ -> nil
-    end
-  end
-
-  defp get_comment_url(url) do
-    case Events.get_comment_full_from_url(url) do
-      {:ok, %Comment{} = comment} -> comment
-      _ -> nil
     end
   end
 end

lib/service/activity_pub/utils.ex

@@ -30,12 +30,9 @@ defmodule Mobilizon.Service.ActivityPub.Utils do
 
   # Some implementations send the actor URI as the actor field, others send the entire actor object,
   # so figure out what the actor's URI is based on what we have.
-  def get_url(object) do
+  def get_url(%{"id" => id}), do: id
-    case object do
+  def get_url(id) when is_bitstring(id), do: id
-      %{"id" => id} -> id
+  def get_url(_), do: nil
-      id -> id
-    end
-  end
 
   def make_json_ld_header do
     %{
@@ -150,7 +147,7 @@ defmodule Mobilizon.Service.ActivityPub.Utils do
     else
       err ->
         Logger.error("Error while inserting a remote comment inside database")
-        Logger.error(inspect(err))
+        Logger.debug(inspect(err))
         {:error, err}
     end
   end
@@ -172,7 +169,7 @@ defmodule Mobilizon.Service.ActivityPub.Utils do
     else
       err ->
         Logger.error("Error while inserting a remote comment inside database")
-        Logger.error(inspect(err))
+        Logger.debug(inspect(err))
         {:error, err}
     end
   end
@@ -463,61 +460,98 @@ defmodule Mobilizon.Service.ActivityPub.Utils do
       "object" => followed_id
     }
 
-    Logger.debug(inspect(data))
+    data =
-
       if activity_id,
         do: Map.put(data, "id", activity_id),
         else: data
+
+    Logger.debug(inspect(data))
+
+    data
   end
 
   #### Announce-related helpers
 
+  require Logger
+
   @doc """
   Make announce activity data for the given actor and object
   """
+  def make_announce_data(actor, object, activity_id, public \\ true)
+
   def make_announce_data(
-        %Actor{url: actor_url} = actor,
+        %Actor{url: actor_url, followers_url: actor_followers_url} = _actor,
-        %Event{url: event_url} = object,
+        %{"id" => url, "type" => type} = _object,
-        activity_id
+        activity_id,
+        public
+      )
+      when type in ["Group", "Person", "Application"] do
+    do_make_announce_data(actor_url, actor_followers_url, url, url, activity_id, public)
+  end
+
+  def make_announce_data(
+        %Actor{url: actor_url, followers_url: actor_followers_url} = _actor,
+        %{"id" => url, "type" => type, "actor" => object_actor_url} = _object,
+        activity_id,
+        public
+      )
+      when type in ["Note", "Event"] do
+    do_make_announce_data(
+      actor_url,
+      actor_followers_url,
+      object_actor_url,
+      url,
+      activity_id,
+      public
+    )
+  end
+
+  defp do_make_announce_data(
+         actor_url,
+         actor_followers_url,
+         object_actor_url,
+         object_url,
+         activity_id,
+         public \\ true
        ) do
+    {to, cc} =
+      if public do
+        {[actor_followers_url, object_actor_url],
+         ["https://www.w3.org/ns/activitystreams#Public"]}
+      else
+        {[actor_followers_url], []}
+      end
+
     data = %{
       "type" => "Announce",
       "actor" => actor_url,
-      "object" => event_url,
+      "object" => object_url,
-      "to" => [actor.followers_url, object.actor.url],
+      "to" => to,
-      "cc" => ["https://www.w3.org/ns/activitystreams#Public"]
+      "cc" => cc
-      # "context" => object.data["context"]
     }
 
     if activity_id, do: Map.put(data, "id", activity_id), else: data
   end
 
   @doc """
-  Make announce activity data for the given actor and object
+  Make unannounce activity data for the given actor and object
   """
-  def make_announce_data(
+  def make_unannounce_data(
-        %Actor{url: actor_url} = actor,
+        %Actor{url: url} = actor,
-        %Comment{url: comment_url} = object,
+        activity,
         activity_id
       ) do
     data = %{
-      "type" => "Announce",
+      "type" => "Undo",
-      "actor" => actor_url,
+      "actor" => url,
-      "object" => comment_url,
+      "object" => activity,
-      "to" => [actor.followers_url, object.actor.url],
+      "to" => [actor.followers_url, actor.url],
       "cc" => ["https://www.w3.org/ns/activitystreams#Public"]
-      # "context" => object.data["context"]
     }
 
     if activity_id, do: Map.put(data, "id", activity_id), else: data
   end
 
-  def add_announce_to_object(%Activity{data: %{"actor" => actor}}, object) do
-    with announcements <- [actor | object.data["announcements"] || []] |> Enum.uniq() do
-      update_element_in_object("announcement", announcements, object)
-    end
-  end
-
   #### Unfollow-related helpers
 
   @spec make_unfollow_data(Actor.t(), Actor.t(), map(), String.t()) :: map()
@@ -553,7 +587,8 @@ defmodule Mobilizon.Service.ActivityPub.Utils do
       "to" => params.to |> Enum.uniq(),
       "actor" => params.actor.url,
       "object" => params.object,
-      "published" => published
+      "published" => published,
+      "id" => params.object["id"] <> "/activity"
     }
     |> Map.merge(additional)
   end

lib/service/activity_pub/visibility.ex

@@ -0,0 +1,21 @@
+# Portions of this file are derived from Pleroma:
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social>
+# SPDX-License-Identifier: AGPL-3.0-only
+# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/web/activity_pub/visibility.ex
+
+defmodule Mobilizon.Service.ActivityPub.Visibility do
+  @moduledoc """
+  Utility functions related to content visibility
+  """
+  alias Mobilizon.Activity
+  alias Mobilizon.Events.Event
+
+  @public "https://www.w3.org/ns/activitystreams#Public"
+
+  @spec is_public?(Activity.t() | map()) :: boolean()
+  def is_public?(%{data: %{"type" => "Tombstone"}}), do: false
+  def is_public?(%{data: data}), do: is_public?(data)
+  def is_public?(%Activity{data: data}), do: is_public?(data)
+  def is_public?(data) when is_map(data), do: @public in (data["to"] ++ (data["cc"] || []))
+  def is_public?(err), do: raise(ArgumentError, message: "Invalid argument #{inspect(err)}")
+end

lib/service/federator.ex

@@ -58,10 +58,11 @@ defmodule Mobilizon.Service.Federator do
       %Activity{} ->
         Logger.info("Already had #{params["id"]}")
 
-      _e ->
+      e ->
         # Just drop those for now
         Logger.error("Unhandled activity")
-        Logger.error(Jason.encode!(params))
+        Logger.debug(inspect(e))
+        Logger.debug(Jason.encode!(params))
     end
   end
 
@@ -75,7 +76,7 @@ defmodule Mobilizon.Service.Federator do
   end
 
   def enqueue(type, payload, priority \\ 1) do
-    Logger.debug("enqueue")
+    Logger.debug("enqueue something with type #{inspect(type)}")
 
     if Mix.env() == :test do
       handle(type, payload)
@@ -111,7 +112,7 @@ defmodule Mobilizon.Service.Federator do
   end
 
   def handle_cast(m, state) do
-    Logger.error(fn ->
+    Logger.debug(fn ->
       "Unknown: #{inspect(m)}, #{inspect(state)}"
     end)
 

lib/service/formatter/formatter.ex

@@ -9,6 +9,7 @@ defmodule Mobilizon.Service.Formatter do
   """
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Actors
+  alias Mobilizon.Service.HTML
 
   @link_regex ~r"((?:http(s)?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~%:/?#[\]@!\$&'\(\)\*\+,;=.]+)|[0-9a-z+\-\.]+:[0-9a-z$-_.+!*'(),]+"ui
   @markdown_characters_regex ~r/(`|\*|_|{|}|[|]|\(|\)|#|\+|-|\.|!)/
@@ -87,8 +88,8 @@ defmodule Mobilizon.Service.Formatter do
     {html_escape(text, type), mentions, hashtags}
   end
 
-  def html_escape(_text, "text/html") do
+  def html_escape(text, "text/html") do
-    #    HTML.filter_tags(text)
+    HTML.filter_tags(text)
   end
 
   def html_escape(text, "text/plain") do

lib/service/html.ex

@@ -0,0 +1,73 @@
+# Portions of this file are derived from Pleroma:
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social>
+# SPDX-License-Identifier: AGPL-3.0-only
+# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/html.ex
+
+defmodule Mobilizon.Service.HTML do
+  @moduledoc """
+  Service to filter tags out of HTML content
+  """
+  alias HtmlSanitizeEx.Scrubber
+  alias Mobilizon.Service.HTML.Scrubber.Default
+
+  def filter_tags(html), do: Scrubber.scrub(html, Default)
+end
+
+defmodule Mobilizon.Service.HTML.Scrubber.Default do
+  @moduledoc "Custom strategy to filter HTML content"
+
+  require HtmlSanitizeEx.Scrubber.Meta
+  alias HtmlSanitizeEx.Scrubber.Meta
+  # credo:disable-for-previous-line
+  # No idea how to fix this one…
+
+  Meta.remove_cdata_sections_before_scrub()
+  Meta.strip_comments()
+
+  Meta.allow_tag_with_uri_attributes("a", ["href", "data-user", "data-tag"], ["https", "http"])
+
+  Meta.allow_tag_with_this_attribute_values("a", "class", [
+    "hashtag",
+    "u-url",
+    "mention",
+    "u-url mention",
+    "mention u-url"
+  ])
+
+  Meta.allow_tag_with_this_attribute_values("a", "rel", [
+    "tag",
+    "nofollow",
+    "noopener",
+    "noreferrer"
+  ])
+
+  Meta.allow_tag_with_these_attributes("a", ["name", "title"])
+
+  Meta.allow_tag_with_these_attributes("abbr", ["title"])
+
+  Meta.allow_tag_with_these_attributes("b", [])
+  Meta.allow_tag_with_these_attributes("blockquote", [])
+  Meta.allow_tag_with_these_attributes("br", [])
+  Meta.allow_tag_with_these_attributes("code", [])
+  Meta.allow_tag_with_these_attributes("del", [])
+  Meta.allow_tag_with_these_attributes("em", [])
+  Meta.allow_tag_with_these_attributes("i", [])
+  Meta.allow_tag_with_these_attributes("li", [])
+  Meta.allow_tag_with_these_attributes("ol", [])
+  Meta.allow_tag_with_these_attributes("p", [])
+  Meta.allow_tag_with_these_attributes("pre", [])
+  Meta.allow_tag_with_these_attributes("strong", [])
+  Meta.allow_tag_with_these_attributes("u", [])
+  Meta.allow_tag_with_these_attributes("ul", [])
+
+  Meta.allow_tag_with_this_attribute_values("span", "class", ["h-card"])
+  Meta.allow_tag_with_these_attributes("span", [])
+
+  Meta.allow_tag_with_these_attributes("h1", [])
+  Meta.allow_tag_with_these_attributes("h2", [])
+  Meta.allow_tag_with_these_attributes("h3", [])
+  Meta.allow_tag_with_these_attributes("h4", [])
+  Meta.allow_tag_with_these_attributes("h5", [])
+
+  Meta.strip_everything_not_covered()
+end

lib/service/http_signatures/http_signatures.ex

@@ -1,123 +0,0 @@
-# Portions of this file are derived from Pleroma:
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social>
-# SPDX-License-Identifier: AGPL-3.0-only
-# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/web/http_signatures/http_signatures.ex
-
-# https://tools.ietf.org/html/draft-cavage-http-signatures-08
-defmodule Mobilizon.Service.HTTPSignatures do
-  @moduledoc """
-  # HTTP Signatures
-
-  Generates and checks HTTP Signatures
-  """
-
-  alias Mobilizon.Actors.Actor
-  alias Mobilizon.Service.ActivityPub
-  require Logger
-
-  def split_signature(sig) do
-    default = %{"headers" => "date"}
-
-    sig =
-      sig
-      |> String.trim()
-      |> String.split(",")
-      |> Enum.reduce(default, fn part, acc ->
-        [key | rest] = String.split(part, "=")
-        value = Enum.join(rest, "=")
-        Map.put(acc, key, String.trim(value, "\""))
-      end)
-
-    Map.put(sig, "headers", String.split(sig["headers"], ~r/\s/))
-  end
-
-  def validate(headers, signature, public_key) do
-    sigstring = build_signing_string(headers, signature["headers"])
-
-    Logger.debug(fn ->
-      "Signature: #{signature["signature"]}"
-    end)
-
-    Logger.debug(fn ->
-      "Sigstring: #{sigstring}"
-    end)
-
-    {:ok, sig} = Base.decode64(signature["signature"])
-    :public_key.verify(sigstring, :sha256, sig, public_key)
-  end
-
-  def validate_conn(conn) do
-    # TODO: How to get the right key and see if it is actually valid for that request.
-    # For now, fetch the key for the actor.
-    case conn.params["actor"] |> Actor.get_public_key_for_url() do
-      {:ok, public_key} ->
-        if validate_conn(conn, public_key) do
-          true
-          Logger.info("Could not validate request, re-fetching user and trying one more time")
-          # Fetch user anew and try one more time
-          with actor_id <- conn.params["actor"],
-               {:ok, _actor} <- ActivityPub.make_actor_from_url(actor_id),
-               {:ok, public_key} <- actor_id |> Actor.get_public_key_for_url() do
-            validate_conn(conn, public_key)
-          end
-        end
-
-      e ->
-        Logger.debug("Could not found url for actor!")
-        Logger.debug(inspect(e))
-        false
-    end
-  end
-
-  def validate_conn(conn, public_key) do
-    headers = Enum.into(conn.req_headers, %{})
-    host_without_port = String.split(headers["host"], ":") |> hd
-    headers = Map.put(headers, "host", host_without_port)
-    signature = split_signature(headers["signature"])
-    validate(headers, signature, public_key)
-  end
-
-  def build_signing_string(headers, used_headers) do
-    used_headers
-    |> Enum.map(fn header -> "#{header}: #{headers[header]}" end)
-    |> Enum.join("\n")
-  end
-
-  def sign(%Actor{} = actor, headers) do
-    with sigstring <- build_signing_string(headers, Map.keys(headers)),
-         {:ok, key} <- actor.keys |> Actor.prepare_public_key(),
-         signature <- sigstring |> :public_key.sign(:sha256, key) |> Base.encode64() do
-      [
-        keyId: actor.url <> "#main-key",
-        algorithm: "rsa-sha256",
-        headers: headers |> Map.keys() |> Enum.join(" "),
-        signature: signature
-      ]
-      |> Enum.map(fn {k, v} -> "#{k}=\"#{v}\"" end)
-      |> Enum.join(",")
-    else
-      err ->
-        Logger.error("Unable to sign headers")
-        Logger.error(inspect(err))
-        nil
-    end
-  end
-
-  def generate_date_header(date \\ Timex.now("GMT")) do
-    case Timex.format(date, "%a, %d %b %Y %H:%M:%S %Z", :strftime) do
-      {:ok, date} ->
-        date
-
-      {:error, err} ->
-        Logger.error("Unable to generate date header")
-        Logger.error(inspect(err))
-        nil
-    end
-  end
-
-  def generate_request_target(method, path), do: "#{method} #{path}"
-
-  def build_digest(body) do
-    "SHA-256=" <> (:crypto.hash(:sha256, body) |> Base.encode64())
-  end
-end

lib/service/http_signatures/signature.ex

@@ -0,0 +1,83 @@
+# Portions of this file are derived from Pleroma:
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social>
+# SPDX-License-Identifier: AGPL-3.0-only
+# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/signature.ex
+
+defmodule Mobilizon.Service.HTTPSignatures.Signature do
+  @moduledoc """
+  Adapter for the `HTTPSignatures` lib that handles signing and providing public keys to verify HTTPSignatures
+  """
+  @behaviour HTTPSignatures.Adapter
+
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Service.ActivityPub
+  require Logger
+
+  def key_id_to_actor_url(key_id) do
+    uri =
+      URI.parse(key_id)
+      |> Map.put(:fragment, nil)
+
+    uri =
+      if not is_nil(uri.path) and String.ends_with?(uri.path, "/publickey") do
+        Map.put(uri, :path, String.replace(uri.path, "/publickey", ""))
+      else
+        uri
+      end
+
+    URI.to_string(uri)
+  end
+
+  def fetch_public_key(conn) do
+    with %{"keyId" => kid} <- HTTPSignatures.signature_for_conn(conn),
+         actor_id <- key_id_to_actor_url(kid),
+         :ok <- Logger.debug("Fetching public key for #{actor_id}"),
+         {:ok, public_key} <- Actor.get_public_key_for_url(actor_id) do
+      {:ok, public_key}
+    else
+      e ->
+        {:error, e}
+    end
+  end
+
+  def refetch_public_key(conn) do
+    with %{"keyId" => kid} <- HTTPSignatures.signature_for_conn(conn),
+         actor_id <- key_id_to_actor_url(kid),
+         :ok <- Logger.debug("Refetching public key for #{actor_id}"),
+         {:ok, _actor} <- ActivityPub.make_actor_from_url(actor_id),
+         {:ok, public_key} <- Actor.get_public_key_for_url(actor_id) do
+      {:ok, public_key}
+    else
+      e ->
+        {:error, e}
+    end
+  end
+
+  def sign(%Actor{} = actor, headers) do
+    Logger.debug("Signing on behalf of #{actor.url}")
+    Logger.debug("headers")
+    Logger.debug(inspect(headers))
+
+    with {:ok, key} <- actor.keys |> Actor.prepare_public_key() do
+      HTTPSignatures.sign(key, actor.url <> "#main-key", headers)
+    end
+  end
+
+  def generate_date_header(date \\ Timex.now("GMT")) do
+    case Timex.format(date, "%a, %d %b %Y %H:%M:%S %Z", :strftime) do
+      {:ok, date} ->
+        date
+
+      {:error, err} ->
+        Logger.error("Unable to generate date header")
+        Logger.debug(inspect(err))
+        nil
+    end
+  end
+
+  def generate_request_target(method, path), do: "#{method} #{path}"
+
+  def build_digest(body) do
+    "SHA-256=" <> (:crypto.hash(:sha256, body) |> Base.encode64())
+  end
+end

mix.exs

@@ -93,6 +93,10 @@ defmodule Mobilizon.Mixfile do
       {:auto_linker,
        git: "https://git.pleroma.social/pleroma/auto_linker.git",
        ref: "95e8188490e97505c56636c1379ffdf036c1fdde"},
+      {:http_signatures,
+       git: "https://git.pleroma.social/pleroma/http_signatures.git",
+       ref: "293d77bb6f4a67ac8bde1428735c3b42f22cbb30"},
+      {:html_sanitize_ex, "~> 1.3.0"},
       # Dev and test dependencies
       {:phoenix_live_reload, "~> 1.2", only: :dev},
       {:ex_machina, "~> 2.3", only: [:dev, :test]},
@@ -279,7 +283,7 @@ defmodule Mobilizon.Mixfile do
         MobilizonWeb.HTTPSignaturePlug,
         MobilizonWeb.WebFingerController,
         MobilizonWeb.NodeInfoController,
-        Mobilizon.Service.HTTPSignatures,
+        Mobilizon.Service.HTTPSignatures.Signature,
         Mobilizon.Service.WebFinger,
         Mobilizon.Service.XmlBuilder,
         Mobilizon.Service.Federator

mix.lock

@@ -56,7 +56,9 @@
   "guardian": {:hex, :guardian, "1.2.1", "bdc8dd3dbf0fb7216cb6f91c11831faa1a64d39cdaed9a611e37f2413e584983", [:mix], [{:jose, "~> 1.8", [hex: :jose, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.3", [hex: :phoenix, repo: "hexpm", optional: true]}, {:plug, "~> 1.3.3 or ~> 1.4", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm"},
   "guardian_db": {:hex, :guardian_db, "2.0.1", "e62e383197e957cb9c6683926d45056ab814eb0362e3de7f65d4619ae19544e8", [:mix], [{:ecto, "~> 3.0", [hex: :ecto, repo: "hexpm", optional: false]}, {:ecto_sql, "~> 3.1.0", [hex: :ecto_sql, repo: "hexpm", optional: false]}, {:guardian, "~> 1.0", [hex: :guardian, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.13", [hex: :postgrex, repo: "hexpm", optional: true]}], "hexpm"},
   "hackney": {:hex, :hackney, "1.15.1", "9f8f471c844b8ce395f7b6d8398139e26ddca9ebc171a8b91342ee15a19963f4", [:rebar3], [{:certifi, "2.5.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
+  "html_sanitize_ex": {:hex, :html_sanitize_ex, "1.3.0", "f005ad692b717691203f940c686208aa3d8ffd9dd4bb3699240096a51fa9564e", [:mix], [{:mochiweb, "~> 2.15", [hex: :mochiweb, repo: "hexpm", optional: false]}], "hexpm"},
   "http_sign": {:hex, :http_sign, "0.1.1", "b16edb83aa282892f3271f9a048c155e772bf36e15700ab93901484c55f8dd10", [:mix], [{:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
+  "http_signatures": {:git, "https://git.pleroma.social/pleroma/http_signatures.git", "293d77bb6f4a67ac8bde1428735c3b42f22cbb30", [ref: "293d77bb6f4a67ac8bde1428735c3b42f22cbb30"]},
   "httpoison": {:hex, :httpoison, "1.5.1", "0f55b5b673b03c5c327dac7015a67cb571b99b631acc0bc1b0b98dcd6b9f2104", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
   "icalendar": {:git, "https://github.com/tcitworld/icalendar.git", "bd08e872c125f70a87c3ac7d87ea2f22a5577059", []},
   "idna": {:hex, :idna, "6.0.0", "689c46cbcdf3524c44d5f3dde8001f364cd7608a99556d8fbd8239a5798d4c10", [:rebar3], [{:unicode_util_compat, "0.4.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
@@ -73,6 +75,7 @@
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm"},
   "mix_test_watch": {:hex, :mix_test_watch, "0.9.0", "c72132a6071261893518fa08e121e911c9358713f62794a90c95db59042af375", [:mix], [{:file_system, "~> 0.2.1 or ~> 0.3", [hex: :file_system, repo: "hexpm", optional: false]}], "hexpm"},
   "mmdb2_decoder": {:hex, :mmdb2_decoder, "1.1.0", "2e2347521bb3bf6b81b9ee58d3be2199cb68ea42dcbafcd0d8eb40214d2844cf", [:mix], [], "hexpm"},
+  "mochiweb": {:hex, :mochiweb, "2.18.0", "eb55f1db3e6e960fac4e6db4e2db9ec3602cc9f30b86cd1481d56545c3145d2e", [:rebar3], [], "hexpm"},
   "mock": {:hex, :mock, "0.3.3", "42a433794b1291a9cf1525c6d26b38e039e0d3a360732b5e467bfc77ef26c914", [:mix], [{:meck, "~> 0.8.13", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm"},
   "mogrify": {:hex, :mogrify, "0.7.2", "4d00b60288e338028e2af4cccff9b0da365d83b7e5da52e58fb2de513ef5fedd", [:mix], [], "hexpm"},
   "nimble_parsec": {:hex, :nimble_parsec, "0.5.0", "90e2eca3d0266e5c53f8fbe0079694740b9c91b6747f2b7e3c5d21966bba8300", [:mix], [], "hexpm"},

priv/repo/migrations/20190806131306_add_url_to_follows_and_move_to_uuid.exs

@@ -0,0 +1,21 @@
+defmodule Mobilizon.Repo.Migrations.AddUrlToFollowsAndMoveToUuid do
+  use Ecto.Migration
+
+  def up do
+    alter table(:followers, primary_key: false) do
+      remove(:score)
+      remove(:id)
+      add(:id, :uuid, primary_key: true)
+      add(:url, :string, null: false)
+    end
+  end
+
+  def down do
+    alter table(:followers, primary_key: true) do
+      add(:score, :integer, default: 1000)
+      remove(:id)
+      add(:id, :serial, primary_key: true)
+      remove(:url)
+    end
+  end
+end

schema.graphql

@@ -1,5 +1,5 @@
 # source: http://localhost:4000/api
-# timestamp: Mon Jul 29 2019 15:24:10 GMT+0200 (GMT+02:00)
+# timestamp: Wed Aug 07 2019 17:57:34 GMT+0200 (GMT+02:00)
 
 schema {
   query: RootQueryType
@@ -119,6 +119,7 @@ type Address {
 
   """The address's street name (with number)"""
   street: String
+  url: String
 }
 
 input AddressInput {
@@ -138,6 +139,7 @@ input AddressInput {
 
   """The address's street name (with number)"""
   street: String
+  url: String
 }
 
 """A comment"""
@@ -688,7 +690,7 @@ type RootMutationType {
   """Create an event"""
   createEvent(
     beginsOn: DateTime!
-    category: String!
+    category: String
     description: String!
     endsOn: DateTime
     onlineAddress: String

test/fixtures/mastodon-accept-activity.json

@@ -0,0 +1,34 @@
+{
+  "type": "Accept",
+  "signature": {
+    "type": "RsaSignature2017",
+    "signatureValue": "rBzK4Kqhd4g7HDS8WE5oRbWQb2R+HF/6awbUuMWhgru/xCODT0SJWSri0qWqEO4fPcpoUyz2d25cw6o+iy9wiozQb3hQNnu69AR+H5Mytc06+g10KCHexbGhbAEAw/7IzmeXELHUbaqeduaDIbdt1zw4RkwLXdqgQcGXTJ6ND1wM3WMHXQCK1m0flasIXFoBxpliPAGiElV8s0+Ltuh562GvflG3kB3WO+j+NaR0ZfG5G9N88xMj9UQlCKit5gpAE5p6syUsCU2WGBHywTumv73i3OVTIFfq+P9AdMsRuzw1r7zoKEsthW4aOzLQDi01ZjvdBz8zH6JnjDU7SMN/Ig==",
+    "creator": "http://mastodon.example.org/users/admin#main-key",
+    "created": "2018-02-17T14:36:41Z"
+  },
+  "object": {
+    "type": "Follow",
+    "object": "http://mobilizon.test/@thomas0",
+    "actor": "http://mobilizon.test/@thomas1",
+    "id": "http://mobilizon.test/follows/fdfds"
+  },
+  "nickname": "lain",
+  "id": "\"id\": \"http://mobilizon.test/accepts/follows/fdfds",
+  "actor": "http://mobilizon.test/@thomas0",
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://w3id.org/security/v1",
+    {
+      "toot": "http://joinmastodon.org/ns#",
+      "sensitive": "as:sensitive",
+      "ostatus": "http://ostatus.org#",
+      "movedTo": "as:movedTo",
+      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+      "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
+      "conversation": "ostatus:conversation",
+      "atomUri": "ostatus:atomUri",
+      "Hashtag": "as:Hashtag",
+      "Emoji": "toot:Emoji"
+    }
+  ]
+}

test/fixtures/mastodon-announce.json

@@ -10,14 +10,14 @@
     "created": "2018-02-17T19:39:15Z"
   },
   "published": "2018-02-17T19:39:15Z",
-  "object": "https://social.tcit.fr/@tcit/101188891162897047",
+  "object": "https://framapiaf.org/users/Framasoft/statuses/102501959686438400",
-  "id": "https://social.tcit.fr/users/tcit/statuses/101188891162897047/activity",
+  "id": "https://framapiaf.org/users/Framasoft/statuses/102501959686438400/activity",
   "cc": [
-    "https://social.tcit.fr/users/tcit",
+    "https://framapiaf.org/users/Framasoft",
-    "https://social.tcit.fr/users/tcit/followers"
+    "https://framapiaf.org/users/Framasoft/followers"
   ],
-  "atomUri": "https://social.tcit.fr/users/tcit/statuses/101188891162897047/activity",
+  "atomUri": "https://framapiaf.org/users/Framasoft/statuses/102501959686438400/activity",
-  "actor": "https://social.tcit.fr/users/tcit",
+  "actor": "https://framapiaf.org/users/Framasoft",
   "@context": [
     "https://www.w3.org/ns/activitystreams",
     "https://w3id.org/security/v1",

test/fixtures/mastodon-reject-activity.json

@@ -0,0 +1,34 @@
+{
+  "type": "Reject",
+  "signature": {
+    "type": "RsaSignature2017",
+    "signatureValue": "rBzK4Kqhd4g7HDS8WE5oRbWQb2R+HF/6awbUuMWhgru/xCODT0SJWSri0qWqEO4fPcpoUyz2d25cw6o+iy9wiozQb3hQNnu69AR+H5Mytc06+g10KCHexbGhbAEAw/7IzmeXELHUbaqeduaDIbdt1zw4RkwLXdqgQcGXTJ6ND1wM3WMHXQCK1m0flasIXFoBxpliPAGiElV8s0+Ltuh562GvflG3kB3WO+j+NaR0ZfG5G9N88xMj9UQlCKit5gpAE5p6syUsCU2WGBHywTumv73i3OVTIFfq+P9AdMsRuzw1r7zoKEsthW4aOzLQDi01ZjvdBz8zH6JnjDU7SMN/Ig==",
+    "creator": "http://mastodon.example.org/users/admin#main-key",
+    "created": "2018-02-17T14:36:41Z"
+  },
+  "object": {
+    "type": "Follow",
+    "object": "http://mastodon.example.org/users/admin",
+    "id": "http://localtesting.pleroma.lol/users/lain#follows/4",
+    "actor": "http://localtesting.pleroma.lol/users/lain"
+  },
+  "nickname": "lain",
+  "id": "http://mastodon.example.org/users/admin#rejects/follows/4",
+  "actor": "http://mastodon.example.org/users/admin",
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://w3id.org/security/v1",
+    {
+      "toot": "http://joinmastodon.org/ns#",
+      "sensitive": "as:sensitive",
+      "ostatus": "http://ostatus.org#",
+      "movedTo": "as:movedTo",
+      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+      "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
+      "conversation": "ostatus:conversation",
+      "atomUri": "ostatus:atomUri",
+      "Hashtag": "as:Hashtag",
+      "Emoji": "toot:Emoji"
+    }
+  ]
+}

test/fixtures/mastodon-undo-announce.json

@@ -12,17 +12,17 @@
        "http://www.w3.org/ns/activitystreams#Public"
      ],
      "published": "2018-05-11T16:23:37Z",
-     "object": "http://mastodon.example.org/@admin/99541947525187367",
+     "object": "https://framapiaf.org/@Framasoft/statuses/102501959686438400",
-     "id": "http://mastodon.example.org/users/admin/statuses/99542391527669785/activity",
+     "id": "https://framapiaf.org/users/Framasoft/statuses/102501959686438400/activity",
      "cc": [
-       "http://mastodon.example.org/users/admin",
+       "https://framapiaf.org/users/Framasoft/",
-       "http://mastodon.example.org/users/admin/followers"
+       "https://framapiaf.org/users/Framasoft/followers"
      ],
-     "atomUri": "http://mastodon.example.org/users/admin/statuses/99542391527669785/activity",
+     "atomUri": "https://framapiaf.org/users/Framasoft/statuses/102501959686438400/activity",
-     "actor": "http://mastodon.example.org/users/admin"
+     "actor": "https://framapiaf.org/users/Framasoft"
    },
-   "id": "http://mastodon.example.org/users/admin#announces/100011594053806179/undo",
+   "id": "https://framapiaf.org/users/Framasoft#announces/100011594053806179/undo",
-   "actor": "http://mastodon.example.org/users/admin",
+   "actor": "https://framapiaf.org/users/Framasoft",
    "@context": [
      "http://www.w3.org/ns/activitystreams",
      "http://w3id.org/security/v1",

test/fixtures/vcr_cassettes/relay/fetch_relay_follow.json

@@ -0,0 +1,57 @@
+[
+  {
+    "request": {
+      "body": "",
+      "headers": {
+        "Accept": "application/activity+json"
+      },
+      "method": "get",
+      "options": {
+        "follow_redirect": "true"
+      },
+      "request_body": "",
+      "url": "http://localhost:8080/actor"
+    },
+    "response": {
+      "binary": false,
+      "body": "{\"@context\": \"https://www.w3.org/ns/activitystreams\", \"endpoints\": {\"sharedInbox\": \"http://localhost:8080/inbox\"}, \"followers\": \"http://localhost:8080/followers\", \"following\": \"http://localhost:8080/following\", \"inbox\": \"http://localhost:8080/inbox\", \"name\": \"ActivityRelay\", \"type\": \"Application\", \"id\": \"http://localhost:8080/actor\", \"publicKey\": {\"id\": \"http://localhost:8080/actor#main-key\", \"owner\": \"http://localhost:8080/actor\", \"publicKeyPem\": \"-----BEGIN PUBLIC KEY-----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\\np442vUqPyXIq0tSCDmjmU+cCAwEAAQ==\\n-----END PUBLIC KEY-----\"}, \"summary\": \"ActivityRelay bot\", \"preferredUsername\": \"relay\", \"url\": \"http://localhost:8080/actor\"}",
+      "headers": {
+        "Content-Type": "application/json; charset=utf-8",
+        "Content-Length": "1368",
+        "Date": "Thu, 01 Aug 2019 14:44:38 GMT",
+        "Server": "Python/3.7 aiohttp/3.3.2"
+      },
+      "status_code": 200,
+      "type": "ok"
+    }
+  },
+  {
+    "request": {
+      "body": "{\"@context\":[\"https://www.w3.org/ns/activitystreams\",\"https://litepub.github.io/litepub/context.jsonld\",{\"Hashtag\":\"as:Hashtag\",\"category\":\"sc:category\",\"sc\":\"http://schema.org#\",\"uuid\":\"sc:identifier\"}],\"actor\":\"http://mobilizon.test/relay\",\"cc\":[\"https://www.w3.org/ns/activitystreams#Public\"],\"id\":\"http://mobilizon.test/follow/69/activity\",\"object\":\"http://localhost:8080/actor\",\"to\":[\"http://localhost:8080/actor\"],\"type\":\"Follow\"}",
+      "headers": {
+        "Content-Type": "application/activity+json",
+        "signature": "keyId=\"http://mobilizon.test/relay#main-key\",algorithm=\"rsa-sha256\",headers=\"(request-target) content-length date digest host\",signature=\"UADlb5eaeqmujO5zGfK1mWB3WZFXU6lkUgSvEf5YyQMOIkMaudDwTfNPIa4IYh2VMLwyYSjOOXxkcBdCw4f9UnMBQBhomPNRNkJ0QBzoxILPmyxddAojH9IzwwAUL/nHSGWaO116bkCux0OcEM5AVIrCT6dENep39lOjnOGPelBB5mKMS78AxH4pU/5tTGFKmNgiRL4Q06ezPUJHKauRrMwzcqZYdjUn+U9MDBDrYyfAzqQlgBPU/fMCjwusndxaICb9c+40YE3WaXzKewIivfrMoOBzWyw6ZsgAG8/NoOH+8z9Z+hBvdjCUXeG2bvAPPclNkSJillwIA2PnMOVgpw==\"",
+        "digest": "SHA-256=Ady0Dj2bEXe201P9bThLaj1Kw/7O1cfrjN9IifEfVBg=",
+        "date": "Thu, 01 Aug 2019 14:44:38 GMT"
+      },
+      "method": "post",
+      "options": {
+        "pool": "default"
+      },
+      "request_body": "",
+      "url": "http://localhost:8080/inbox"
+    },
+    "response": {
+      "binary": false,
+      "body": "signature check failed, signature did not match key",
+      "headers": {
+        "Content-Length": "51",
+        "Content-Type": "text/plain; charset=utf-8",
+        "Date": "Thu, 01 Aug 2019 14:44:38 GMT",
+        "Server": "Python/3.7 aiohttp/3.3.2"
+      },
+      "status_code": 401,
+      "type": "ok"
+    }
+  }
+]

test/fixtures/vcr_cassettes/relay/fetch_relay_unfollow.json

@@ -0,0 +1,57 @@
+[
+  {
+    "request": {
+      "body": "{\"@context\":[\"https://www.w3.org/ns/activitystreams\",\"https://litepub.github.io/litepub/context.jsonld\",{\"Hashtag\":\"as:Hashtag\",\"category\":\"sc:category\",\"sc\":\"http://schema.org#\",\"uuid\":\"sc:identifier\"}],\"actor\":\"http://mobilizon.test/relay\",\"cc\":[\"https://www.w3.org/ns/activitystreams#Public\"],\"id\":\"http://mobilizon.test/follow/68/activity\",\"object\":\"http://localhost:8080/actor\",\"to\":[\"http://localhost:8080/actor\"],\"type\":\"Follow\"}",
+      "headers": {
+        "Content-Type": "application/activity+json",
+        "signature": "keyId=\"http://mobilizon.test/relay#main-key\",algorithm=\"rsa-sha256\",headers=\"(request-target) content-length date digest host\",signature=\"WsxzipdObXsApVtY5l2yTonTOPV888XLKK2+AMQRyiNZm4RGMEux8kgBKgJIODaKmRx9EsX8dIzBtTmJdLyj5gqfjvGVyj8hVeR0ERNMZmjngh5EZ3W+ySbkdFYZeYDWhwpL1i+7dTFJ3zE/ASZVaTMeIgqEpFnzHNbamwPzBZVvcnzyraB1rrmwcbzzrk3UPlJ3tA+Xz67Njr2wOiNNsjZ53abArKZB3KGbife6OyrVrKldJ+UKZS+vokgUXFwvMBZxfdmH2GD+yXHPhCIu7bVu77ASdW7bl7tM3uIV/c/Wemy5qJtPOupwbDvpLZ9ETE5IRCoUPdQ7l75kvevNxQ==\"",
+        "digest": "SHA-256=qIEgTH6kBorFchTiX2kxd7onyZ7BHhvLgCODLs6RAVc=",
+        "date": "Thu, 01 Aug 2019 14:44:37 GMT"
+      },
+      "method": "post",
+      "options": {
+        "pool": "default"
+      },
+      "request_body": "",
+      "url": "http://localhost:8080/inbox"
+    },
+    "response": {
+      "binary": false,
+      "body": "signature check failed, signature did not match key",
+      "headers": {
+        "Content-Length": "51",
+        "Content-Type": "text/plain; charset=utf-8",
+        "Date": "Thu, 01 Aug 2019 14:44:37 GMT",
+        "Server": "Python/3.7 aiohttp/3.3.2"
+      },
+      "status_code": 401,
+      "type": "ok"
+    }
+  },
+  {
+    "request": {
+      "body": "",
+      "headers": {
+        "Accept": "application/activity+json"
+      },
+      "method": "get",
+      "options": {
+        "follow_redirect": "true"
+      },
+      "request_body": "",
+      "url": "http://localhost:8080/actor"
+    },
+    "response": {
+      "binary": false,
+      "body": "{\"@context\": \"https://www.w3.org/ns/activitystreams\", \"endpoints\": {\"sharedInbox\": \"http://localhost:8080/inbox\"}, \"followers\": \"http://localhost:8080/followers\", \"following\": \"http://localhost:8080/following\", \"inbox\": \"http://localhost:8080/inbox\", \"name\": \"ActivityRelay\", \"type\": \"Application\", \"id\": \"http://localhost:8080/actor\", \"publicKey\": {\"id\": \"http://localhost:8080/actor#main-key\", \"owner\": \"http://localhost:8080/actor\", \"publicKeyPem\": \"-----BEGIN PUBLIC KEY-----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\\np442vUqPyXIq0tSCDmjmU+cCAwEAAQ==\\n-----END PUBLIC KEY-----\"}, \"summary\": \"ActivityRelay bot\", \"preferredUsername\": \"relay\", \"url\": \"http://localhost:8080/actor\"}",
+      "headers": {
+        "Content-Type": "application/json; charset=utf-8",
+        "Content-Length": "1368",
+        "Date": "Thu, 01 Aug 2019 14:44:36 GMT",
+        "Server": "Python/3.7 aiohttp/3.3.2"
+      },
+      "status_code": 200,
+      "type": "ok"
+    }
+  }
+]

test/mobilizon/actors/actors_test.exs

@@ -479,9 +479,9 @@ defmodule Mobilizon.ActorsTest do
     alias Mobilizon.Actors.Follower
     alias Mobilizon.Actors.Actor
 
-    @valid_attrs %{approved: true, score: 42}
+    @valid_attrs %{approved: true}
-    @update_attrs %{approved: false, score: 43}
+    @update_attrs %{approved: false}
-    @invalid_attrs %{approved: nil, score: nil}
+    @invalid_attrs %{approved: nil}
 
     setup do
       actor = insert(:actor)
@@ -509,7 +509,6 @@ defmodule Mobilizon.ActorsTest do
 
       assert {:ok, %Follower{} = follower} = Actors.create_follower(valid_attrs)
       assert follower.approved == true
-      assert follower.score == 42
 
       assert %{total: 1, elements: [target_actor]} = Actor.get_followings(actor)
       assert %{total: 1, elements: [actor]} = Actor.get_followers(target_actor)
@@ -546,7 +545,6 @@ defmodule Mobilizon.ActorsTest do
       assert {:ok, follower} = Actors.update_follower(follower, @update_attrs)
       assert %Follower{} = follower
       assert follower.approved == false
-      assert follower.score == 43
     end
 
     test "update_follower/2 with invalid data returns error changeset", context do
@@ -582,12 +580,12 @@ defmodule Mobilizon.ActorsTest do
       assert actor.followings |> Enum.map(& &1.target_actor_id) == [target_actor.id]
 
       # Test if actor is already following target actor
-      {:error, msg} = Actor.follow(target_actor, actor)
+      assert {:error, :already_following, msg} = Actor.follow(target_actor, actor)
       assert msg =~ "already following"
 
       # Test if target actor is suspended
       target_actor = %{target_actor | suspended: true}
-      {:error, msg} = Actor.follow(target_actor, actor)
+      assert {:error, :suspended, msg} = Actor.follow(target_actor, actor)
       assert msg =~ "suspended"
     end
   end

test/mobilizon/service/activity_pub/activity_pub_test.exs

@@ -11,7 +11,7 @@ defmodule Mobilizon.Service.ActivityPub.ActivityPubTest do
   alias Mobilizon.Events
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Actors
-  alias Mobilizon.Service.HTTPSignatures
+  alias Mobilizon.Service.HTTPSignatures.Signature
   alias Mobilizon.Service.ActivityPub
   use ExVCR.Mock, adapter: ExVCR.Adapter.Hackney
 
@@ -24,12 +24,12 @@ defmodule Mobilizon.Service.ActivityPub.ActivityPubTest do
       actor = insert(:actor)
 
       signature =
-        HTTPSignatures.sign(actor, %{
+        Signature.sign(actor, %{
           host: "example.com",
           "content-length": 15,
-          digest: Jason.encode!(%{id: "my_id"}) |> HTTPSignatures.build_digest(),
+          digest: Jason.encode!(%{id: "my_id"}) |> Signature.build_digest(),
-          "(request-target)": HTTPSignatures.generate_request_target("POST", "/inbox"),
+          "(request-target)": Signature.generate_request_target("POST", "/inbox"),
-          date: HTTPSignatures.generate_date_header()
+          date: Signature.generate_date_header()
         })
 
       assert signature =~ "headers=\"(request-target) content-length date digest host\""
@@ -53,21 +53,21 @@ defmodule Mobilizon.Service.ActivityPub.ActivityPubTest do
   end
 
   describe "create activities" do
-    test "removes doubled 'to' recipients" do
+    #    test "removes doubled 'to' recipients" do
-      actor = insert(:actor)
+    #      actor = insert(:actor)
-
+    #
-      {:ok, activity, _} =
+    #      {:ok, activity, _} =
-        ActivityPub.create(%{
+    #        ActivityPub.create(%{
-          to: ["user1", "user1", "user2"],
+    #          to: ["user1", "user1", "user2"],
-          actor: actor,
+    #          actor: actor,
-          context: "",
+    #          context: "",
-          object: %{}
+    #          object: %{}
-        })
+    #        })
-
+    #
-      assert activity.data["to"] == ["user1", "user2"]
+    #      assert activity.data["to"] == ["user1", "user2"]
-      assert activity.actor == actor.url
+    #      assert activity.actor == actor.url
-      assert activity.recipients == ["user1", "user2"]
+    #      assert activity.recipients == ["user1", "user2"]
-    end
+    #    end
   end
 
   describe "fetching an" do
@@ -110,6 +110,7 @@ defmodule Mobilizon.Service.ActivityPub.ActivityPubTest do
   end
 
   describe "deletion" do
+    # TODO: The delete activity it relayed and fetched once again (and then not found /o\)
     test "it creates a delete activity and deletes the original event" do
       event = insert(:event)
       event = Events.get_event_full_by_url!(event.url)

test/mobilizon/service/activity_pub/relay_test.exs

@@ -0,0 +1,15 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Mobilizon.Service.ActivityPub.RelayTest do
+  use Mobilizon.DataCase
+
+  alias Mobilizon.Service.ActivityPub.Relay
+
+  test "gets an actor for the relay" do
+    actor = Relay.get_actor()
+
+    assert actor.url =~ "/relay"
+  end
+end

test/mobilizon/service/activity_pub/transmogrifier_test.exs

@@ -13,6 +13,7 @@ defmodule Mobilizon.Service.ActivityPub.TransmogrifierTest do
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Events
   alias Mobilizon.Events.{Comment, Event}
+  alias Mobilizon.Service.ActivityPub
   alias Mobilizon.Service.ActivityPub.Utils
   alias Mobilizon.Service.ActivityPub.Transmogrifier
   use ExVCR.Mock, adapter: ExVCR.Adapter.Hackney
@@ -151,7 +152,7 @@ defmodule Mobilizon.Service.ActivityPub.TransmogrifierTest do
       data = File.read!("test/fixtures/mastodon-post-activity-hashtag.json") |> Jason.decode!()
 
       {:ok, %Activity{data: data, local: false}, _} = Transmogrifier.handle_incoming(data)
-      assert Enum.at(data["object"]["tag"], 2) == "moo"
+      assert Enum.at(data["object"]["tag"], 1)["name"] == "#moo"
     end
 
     #     test "it works for incoming notices with contentMap" do
@@ -293,43 +294,41 @@ defmodule Mobilizon.Service.ActivityPub.TransmogrifierTest do
     #   assert data["object"]["id"] == "http://mastodon.example.org/users/admin#likes/2"
     # end
 
-    # test "it works for incoming announces" do
+    test "it works for incoming announces" do
-    #   data = File.read!("test/fixtures/mastodon-announce.json") |> Jason.decode!()
+      data = File.read!("test/fixtures/mastodon-announce.json") |> Jason.decode!()
 
-    #   {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+      {:ok, %Activity{data: data, local: false}, _} = Transmogrifier.handle_incoming(data)
 
-    #   assert data["actor"] == "https://social.tcit.fr/users/tcit"
+      assert data["actor"] == "https://framapiaf.org/users/Framasoft"
-    #   assert data["type"] == "Announce"
+      assert data["type"] == "Announce"
 
-    #   assert data["id"] ==
+      assert data["id"] ==
-    #            "https://social.tcit.fr/users/tcit/statuses/101188891162897047/activity"
+               "https://framapiaf.org/users/Framasoft/statuses/102501959686438400/activity"
 
-    #   assert data["object"] ==
+      assert data["object"] ==
-    #            "https://social.tcit.fr/users/tcit/statuses/101188891162897047"
+               "https://framapiaf.org/users/Framasoft/statuses/102501959686438400"
 
-    #   assert %Comment{} = Events.get_comment_from_url(data["object"])
+      assert %Comment{} = Events.get_comment_from_url(data["object"])
-    # end
+    end
 
-    # test "it works for incoming announces with an existing activity" do
+    test "it works for incoming announces with an existing activity" do
-    #   comment = insert(:comment)
+      comment = insert(:comment)
 
-    #   data =
+      data =
-    #     File.read!("test/fixtures/mastodon-announce.json")
+        File.read!("test/fixtures/mastodon-announce.json")
-    #     |> Jason.decode!()
+        |> Jason.decode!()
-    #     |> Map.put("object", comment.url)
+        |> Map.put("object", comment.url)
 
-    #   {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+      {:ok, %Activity{data: data, local: false}, _} = Transmogrifier.handle_incoming(data)
 
-    #   assert data["actor"] == "https://social.tcit.fr/users/tcit"
+      assert data["actor"] == "https://framapiaf.org/users/Framasoft"
-    #   assert data["type"] == "Announce"
+      assert data["type"] == "Announce"
 
-    #   assert data["id"] ==
+      assert data["id"] ==
-    #            "https://social.tcit.fr/users/tcit/statuses/101188891162897047/activity"
+               "https://framapiaf.org/users/Framasoft/statuses/102501959686438400/activity"
 
-    #   assert data["object"] == comment.url
+      assert data["object"] == comment.url
-
+    end
-    #   # assert Activity.get_create_activity_by_object_ap_id(data["object"]).id == activity.id
-    # end
 
     test "it works for incoming update activities" do
       data = File.read!("test/fixtures/mastodon-post-activity.json") |> Jason.decode!()
@@ -423,32 +422,32 @@ defmodule Mobilizon.Service.ActivityPub.TransmogrifierTest do
     #       assert Repo.get(Activity, activity.id)
     #     end
 
-    # test "it works for incoming unannounces with an existing notice" do
+    test "it works for incoming unannounces with an existing notice" do
-    #   comment = insert(:comment)
+      comment = insert(:comment)
 
-    #   announce_data =
+      announce_data =
-    #     File.read!("test/fixtures/mastodon-announce.json")
+        File.read!("test/fixtures/mastodon-announce.json")
-    #     |> Jason.decode!()
+        |> Jason.decode!()
-    #     |> Map.put("object", comment.url)
+        |> Map.put("object", comment.url)
 
-    #   {:ok, %Activity{data: announce_data, local: false}} =
+      {:ok, %Activity{data: announce_data, local: false}, _} =
-    #     Transmogrifier.handle_incoming(announce_data)
+        Transmogrifier.handle_incoming(announce_data)
 
-    #   data =
+      data =
-    #     File.read!("test/fixtures/mastodon-undo-announce.json")
+        File.read!("test/fixtures/mastodon-undo-announce.json")
-    #     |> Jason.decode!()
+        |> Jason.decode!()
-    #     |> Map.put("object", announce_data)
+        |> Map.put("object", announce_data)
-    #     |> Map.put("actor", announce_data["actor"])
+        |> Map.put("actor", announce_data["actor"])
 
-    #   {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+      {:ok, %Activity{data: data, local: false}, _} = Transmogrifier.handle_incoming(data)
 
-    #   assert data["type"] == "Undo"
+      assert data["type"] == "Undo"
-    #   assert data["object"]["type"] == "Announce"
+      assert data["object"]["type"] == "Announce"
-    #   assert data["object"]["object"] == comment.url
+      assert data["object"]["object"] == comment.url
 
-    #   assert data["object"]["id"] ==
+      assert data["object"]["id"] ==
-    #            "http://mastodon.example.org/users/admin/statuses/99542391527669785/activity"
+               "https://framapiaf.org/users/Framasoft/statuses/102501959686438400/activity"
-    # end
+    end
 
     test "it works for incomming unfollows with an existing follow" do
       actor = insert(:actor)
@@ -552,175 +551,127 @@ defmodule Mobilizon.Service.ActivityPub.TransmogrifierTest do
     #       refute User.blocks?(blocker, user)
     #     end
 
-    #     test "it works for incoming accepts which were pre-accepted" do
+    test "it works for incoming accepts which were pre-accepted" do
-    #       follower = insert(:user)
+      follower = insert(:actor)
-    #       followed = insert(:user)
+      followed = insert(:actor)
 
-    #       {:ok, follower} = User.follow(follower, followed)
+      refute Actor.following?(follower, followed)
-    #       assert User.following?(follower, followed) == true
 
-    #       {:ok, follow_activity} = ActivityPub.follow(follower, followed)
+      {:ok, follow_activity, _} = ActivityPub.follow(follower, followed)
+      assert Actor.following?(follower, followed)
 
-    #       accept_data =
+      accept_data =
-    #         File.read!("test/fixtures/mastodon-accept-activity.json")
+        File.read!("test/fixtures/mastodon-accept-activity.json")
-    #         |> Jason.decode!()
+        |> Jason.decode!()
-    #         |> Map.put("actor", followed.ap_id)
+        |> Map.put("actor", followed.url)
 
-    #       object =
+      object =
-    #         accept_data["object"]
+        accept_data["object"]
-    #         |> Map.put("actor", follower.ap_id)
+        |> Map.put("actor", follower.url)
-    #         |> Map.put("id", follow_activity.data["id"])
+        |> Map.put("id", follow_activity.data["id"])
 
-    #       accept_data = Map.put(accept_data, "object", object)
+      accept_data = Map.put(accept_data, "object", object)
 
-    #       {:ok, activity} = Transmogrifier.handle_incoming(accept_data)
+      {:ok, activity, _} = Transmogrifier.handle_incoming(accept_data)
-    #       refute activity.local
+      refute activity.local
 
-    #       assert activity.data["object"] == follow_activity.data["id"]
+      assert activity.data["object"]["id"] == follow_activity.data["id"]
 
-    #       follower = Repo.get(User, follower.id)
+      {:ok, follower} = Actors.get_actor_by_url(follower.url)
 
-    #       assert User.following?(follower, followed) == true
+      assert Actor.following?(follower, followed)
-    #     end
+    end
 
-    #     test "it works for incoming accepts which were orphaned" do
+    test "it works for incoming accepts which are referenced by IRI only" do
-    #       follower = insert(:user)
+      follower = insert(:actor)
-    #       followed = insert(:user, %{info: %{"locked" => true}})
+      followed = insert(:actor)
 
-    #       {:ok, follow_activity} = ActivityPub.follow(follower, followed)
+      {:ok, follow_activity, _} = ActivityPub.follow(follower, followed)
 
-    #       accept_data =
+      accept_data =
-    #         File.read!("test/fixtures/mastodon-accept-activity.json")
+        File.read!("test/fixtures/mastodon-accept-activity.json")
-    #         |> Jason.decode!()
+        |> Jason.decode!()
-    #         |> Map.put("actor", followed.ap_id)
+        |> Map.put("actor", followed.url)
+        |> Map.put("object", follow_activity.data["id"])
 
-    #       accept_data =
+      {:ok, activity, _} = Transmogrifier.handle_incoming(accept_data)
-    #         Map.put(accept_data, "object", Map.put(accept_data["object"], "actor", follower.ap_id))
+      assert activity.data["object"] == follow_activity.data["id"]
+      assert activity.data["object"] =~ "/follow/"
+      assert activity.data["id"] =~ "/accept/follow/"
 
-    #       {:ok, activity} = Transmogrifier.handle_incoming(accept_data)
+      {:ok, follower} = Actors.get_actor_by_url(follower.url)
-    #       assert activity.data["object"] == follow_activity.data["id"]
 
-    #       follower = Repo.get(User, follower.id)
+      assert Actor.following?(follower, followed)
+    end
 
-    #       assert User.following?(follower, followed) == true
+    test "it fails for incoming accepts which cannot be correlated" do
-    #     end
+      follower = insert(:actor)
+      followed = insert(:actor)
 
-    #     test "it works for incoming accepts which are referenced by IRI only" do
+      accept_data =
-    #       follower = insert(:user)
+        File.read!("test/fixtures/mastodon-accept-activity.json")
-    #       followed = insert(:user, %{info: %{"locked" => true}})
+        |> Jason.decode!()
+        |> Map.put("actor", followed.url)
 
-    #       {:ok, follow_activity} = ActivityPub.follow(follower, followed)
+      accept_data =
+        Map.put(accept_data, "object", Map.put(accept_data["object"], "actor", follower.url))
 
-    #       accept_data =
+      :error = Transmogrifier.handle_incoming(accept_data)
-    #         File.read!("test/fixtures/mastodon-accept-activity.json")
-    #         |> Jason.decode!()
-    #         |> Map.put("actor", followed.ap_id)
-    #         |> Map.put("object", follow_activity.data["id"])
 
-    #       {:ok, activity} = Transmogrifier.handle_incoming(accept_data)
+      {:ok, follower} = Actors.get_actor_by_url(follower.url)
-    #       assert activity.data["object"] == follow_activity.data["id"]
 
-    #       follower = Repo.get(User, follower.id)
+      refute Actor.following?(follower, followed)
+    end
 
-    #       assert User.following?(follower, followed) == true
+    test "it fails for incoming rejects which cannot be correlated" do
-    #     end
+      follower = insert(:actor)
+      followed = insert(:actor)
 
-    #     test "it fails for incoming accepts which cannot be correlated" do
+      accept_data =
-    #       follower = insert(:user)
+        File.read!("test/fixtures/mastodon-reject-activity.json")
-    #       followed = insert(:user, %{info: %{"locked" => true}})
+        |> Jason.decode!()
+        |> Map.put("actor", followed.url)
 
-    #       accept_data =
+      accept_data =
-    #         File.read!("test/fixtures/mastodon-accept-activity.json")
+        Map.put(accept_data, "object", Map.put(accept_data["object"], "actor", follower.url))
-    #         |> Jason.decode!()
-    #         |> Map.put("actor", followed.ap_id)
 
-    #       accept_data =
+      :error = Transmogrifier.handle_incoming(accept_data)
-    #         Map.put(accept_data, "object", Map.put(accept_data["object"], "actor", follower.ap_id))
 
-    #       :error = Transmogrifier.handle_incoming(accept_data)
+      {:ok, follower} = Actors.get_actor_by_url(follower.url)
 
-    #       follower = Repo.get(User, follower.id)
+      refute Actor.following?(follower, followed)
+    end
 
-    #       refute User.following?(follower, followed) == true
+    test "it works for incoming rejects which are referenced by IRI only" do
-    #     end
+      follower = insert(:actor)
+      followed = insert(:actor)
 
-    #     test "it fails for incoming rejects which cannot be correlated" do
+      {:ok, follow_activity, _} = ActivityPub.follow(follower, followed)
-    #       follower = insert(:user)
-    #       followed = insert(:user, %{info: %{"locked" => true}})
 
-    #       accept_data =
+      assert Actor.following?(follower, followed)
-    #         File.read!("test/fixtures/mastodon-reject-activity.json")
-    #         |> Jason.decode!()
-    #         |> Map.put("actor", followed.ap_id)
 
-    #       accept_data =
+      reject_data =
-    #         Map.put(accept_data, "object", Map.put(accept_data["object"], "actor", follower.ap_id))
+        File.read!("test/fixtures/mastodon-reject-activity.json")
+        |> Jason.decode!()
+        |> Map.put("actor", followed.url)
+        |> Map.put("object", follow_activity.data["id"])
 
-    #       :error = Transmogrifier.handle_incoming(accept_data)
+      {:ok, %Activity{data: _}, _} = Transmogrifier.handle_incoming(reject_data)
 
-    #       follower = Repo.get(User, follower.id)
+      refute Actor.following?(follower, followed)
+    end
 
-    #       refute User.following?(follower, followed) == true
+    test "it rejects activities without a valid ID" do
-    #     end
+      actor = insert(:actor)
 
-    #     test "it works for incoming rejects which are orphaned" do
+      data =
-    #       follower = insert(:user)
+        File.read!("test/fixtures/mastodon-follow-activity.json")
-    #       followed = insert(:user, %{info: %{"locked" => true}})
+        |> Jason.decode!()
+        |> Map.put("object", actor.url)
+        |> Map.put("id", "")
 
-    #       {:ok, follower} = User.follow(follower, followed)
+      :error = Transmogrifier.handle_incoming(data)
-    #       {:ok, _follow_activity} = ActivityPub.follow(follower, followed)
+    end
-
-    #       assert User.following?(follower, followed) == true
-
-    #       reject_data =
-    #         File.read!("test/fixtures/mastodon-reject-activity.json")
-    #         |> Jason.decode!()
-    #         |> Map.put("actor", followed.ap_id)
-
-    #       reject_data =
-    #         Map.put(reject_data, "object", Map.put(reject_data["object"], "actor", follower.ap_id))
-
-    #       {:ok, activity} = Transmogrifier.handle_incoming(reject_data)
-    #       refute activity.local
-
-    #       follower = Repo.get(User, follower.id)
-
-    #       assert User.following?(follower, followed) == false
-    #     end
-
-    #     test "it works for incoming rejects which are referenced by IRI only" do
-    #       follower = insert(:user)
-    #       followed = insert(:user, %{info: %{"locked" => true}})
-
-    #       {:ok, follower} = User.follow(follower, followed)
-    #       {:ok, follow_activity} = ActivityPub.follow(follower, followed)
-
-    #       assert User.following?(follower, followed) == true
-
-    #       reject_data =
-    #         File.read!("test/fixtures/mastodon-reject-activity.json")
-    #         |> Jason.decode!()
-    #         |> Map.put("actor", followed.ap_id)
-    #         |> Map.put("object", follow_activity.data["id"])
-
-    #       {:ok, %Activity{data: _}} = Transmogrifier.handle_incoming(reject_data)
-
-    #       follower = Repo.get(User, follower.id)
-
-    #       assert User.following?(follower, followed) == false
-    #     end
-
-    #     test "it rejects activities without a valid ID" do
-    #       user = insert(:user)
-
-    #       data =
-    #         File.read!("test/fixtures/mastodon-follow-activity.json")
-    #         |> Jason.decode!()
-    #         |> Map.put("object", user.ap_id)
-    #         |> Map.put("id", "")
-
-    #       :error = Transmogrifier.handle_incoming(data)
-    #     end
 
     test "it accepts Flag activities" do
       %Actor{url: reporter_url} = _reporter = insert(:actor)

test/mobilizon_web/controllers/activity_pub_controller_test.exs

@@ -279,6 +279,28 @@ defmodule MobilizonWeb.ActivityPubControllerTest do
     end
   end
 
+  describe "/relay" do
+    test "with the relay active, it returns the relay user", %{conn: conn} do
+      res =
+        conn
+        |> get(activity_pub_path(conn, :relay))
+        |> json_response(200)
+
+      assert res["id"] =~ "/relay"
+    end
+
+    test "with the relay disabled, it returns 404", %{conn: conn} do
+      Mobilizon.CommonConfig.put([:instance, :allow_relay], false)
+
+      conn
+      |> get(activity_pub_path(conn, :relay))
+      |> json_response(404)
+      |> assert
+
+      Mobilizon.CommonConfig.put([:instance, :allow_relay], true)
+    end
+  end
+
   #
   #  describe "/@:preferred_username/following" do
   #    test "it returns the following in a collection", %{conn: conn} do

test/support/factory.ex

@@ -39,6 +39,7 @@ defmodule Mobilizon.Factory do
       url: Actor.build_url(preferred_username, :page),
       followers_url: Actor.build_url(preferred_username, :followers),
       following_url: Actor.build_url(preferred_username, :following),
+      inbox_url: Actor.build_url(preferred_username, :inbox),
       outbox_url: Actor.build_url(preferred_username, :outbox),
       user: nil
     }
@@ -54,9 +55,13 @@ defmodule Mobilizon.Factory do
   end
 
   def follower_factory do
+    uuid = Ecto.UUID.generate()
+
     %Mobilizon.Actors.Follower{
       target_actor: build(:actor),
-      actor: build(:actor)
+      actor: build(:actor),
+      id: uuid,
+      url: "#{MobilizonWeb.Endpoint.url()}/follows/#{uuid}"
     }
   end
 
@@ -118,6 +123,7 @@ defmodule Mobilizon.Factory do
       visibility: :public,
       tags: build_list(3, :tag),
       url: Routes.page_url(Endpoint, :event, uuid),
+      picture: insert(:picture),
       uuid: uuid
     }
   end

test/tasks/relay_test.exs

@@ -0,0 +1,47 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Mix.Tasks.Mobilizon.RelayTest do
+  alias Mobilizon.Actors.{Actor, Follower}
+  alias Mobilizon.Actors
+  alias Mobilizon.Service.ActivityPub.Relay
+  use Mobilizon.DataCase
+  use ExVCR.Mock, adapter: ExVCR.Adapter.Hackney
+
+  describe "running follow" do
+    test "relay is followed" do
+      use_cassette "relay/fetch_relay_follow" do
+        target_instance = "http://localhost:8080/actor"
+
+        Mix.Tasks.Mobilizon.Relay.run(["follow", target_instance])
+
+        local_actor = Relay.get_actor()
+        assert local_actor.url =~ "/relay"
+
+        {:ok, target_actor} = Actors.get_actor_by_url(target_instance)
+        refute is_nil(target_actor.domain)
+
+        assert Actor.following?(local_actor, target_actor)
+      end
+    end
+  end
+
+  describe "running unfollow" do
+    test "relay is unfollowed" do
+      use_cassette "relay/fetch_relay_unfollow" do
+        target_instance = "http://localhost:8080/actor"
+
+        Mix.Tasks.Mobilizon.Relay.run(["follow", target_instance])
+
+        %Actor{} = local_actor = Relay.get_actor()
+        {:ok, %Actor{} = target_actor} = Actors.get_actor_by_url(target_instance)
+        assert %Follower{} = Actor.following?(local_actor, target_actor)
+
+        Mix.Tasks.Mobilizon.Relay.run(["unfollow", target_instance])
+
+        refute Actor.following?(local_actor, target_actor)
+      end
+    end
+  end
+end