Refactor User.post_register_action/1 emails

[akkoma] / lib / pleroma / web / federator / federator.ex

diff --git a/lib/pleroma/web/federator/federator.ex b/lib/pleroma/web/federator/federator.ex
index bb9eadfee6b620c5e24821ae46e4c4f4d6835f18..13065414545829c8bf4696bbfff83246433ea551 100644 (file)
--- a/lib/pleroma/web/federator/federator.ex
+++ b/lib/pleroma/web/federator/federator.ex
@@ -1,26 +1,33 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Federator do
-  alias Pleroma.Workers.Publisher, as: PublisherWorker
-  alias Pleroma.Workers.Receiver, as: ReceiverWorker
-  alias Pleroma.Workers.Subscriber, as: SubscriberWorker
+  alias Pleroma.Activity
+  alias Pleroma.Object.Containment
+  alias Pleroma.User
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.ActivityPub.Transmogrifier
+  alias Pleroma.Web.ActivityPub.Utils
+  alias Pleroma.Web.Federator.Publisher
+  alias Pleroma.Workers.PublisherWorker
+  alias Pleroma.Workers.ReceiverWorker
 
   require Logger
 
-  def init do
-    # 1 minute
-    refresh_subscriptions(schedule_in: 60)
-  end
-
-  @doc "Addresses [memory leaks on recursive replies fetching](https://git.pleroma.social/pleroma/pleroma/issues/161)"
+  @doc """
+  Returns `true` if the distance to target object does not exceed max configured value.
+  Serves to prevent fetching of very long threads, especially useful on smaller instances.
+  Addresses [memory leaks on recursive replies fetching](https://git.pleroma.social/pleroma/pleroma/issues/161).
+  Applies to fetching of both ancestor (reply-to) and child (reply) objects.
+  """
   # credo:disable-for-previous-line Credo.Check.Readability.MaxLineLength
-  def allowed_incoming_reply_depth?(depth) do
-    max_replies_depth = Pleroma.Config.get([:instance, :federation_incoming_replies_max_depth])
+  def allowed_thread_distance?(distance) do
+    max_distance = Pleroma.Config.get([:instance, :federation_incoming_replies_max_depth])
 
-    if max_replies_depth do
-      (depth || 1) <= max_replies_depth
+    if max_distance && max_distance >= 0 do
+      # Default depth is 0 (an object has zero distance from itself in its thread)
+      (distance || 0) <= max_distance
     else
       true
     end
@@ -28,51 +35,77 @@ defmodule Pleroma.Web.Federator do
 
   # Client API
 
-  def incoming_doc(doc) do
-    %{"op" => "incoming_doc", "body" => doc}
-    |> ReceiverWorker.new(worker_args(:federator_incoming))
-    |> Pleroma.Repo.insert()
-  end
-
   def incoming_ap_doc(params) do
-    %{"op" => "incoming_ap_doc", "params" => params}
-    |> ReceiverWorker.new(worker_args(:federator_incoming))
-    |> Pleroma.Repo.insert()
+    ReceiverWorker.enqueue("incoming_ap_doc", %{"params" => params})
   end
 
   def publish(%{id: "pleroma:fakeid"} = activity) do
-    PublisherWorker.perform_publish(activity)
+    perform(:publish, activity)
   end
 
   def publish(activity) do
-    %{"op" => "publish", "activity_id" => activity.id}
-    |> PublisherWorker.new(worker_args(:federator_outgoing))
-    |> Pleroma.Repo.insert()
+    PublisherWorker.enqueue("publish", %{"activity_id" => activity.id})
   end
 
-  def verify_websub(websub) do
-    %{"op" => "verify_websub", "websub_id" => websub.id}
-    |> SubscriberWorker.new(worker_args(:federator_outgoing))
-    |> Pleroma.Repo.insert()
+  # Job Worker Callbacks
+
+  @spec perform(atom(), module(), any()) :: {:ok, any()} | {:error, any()}
+  def perform(:publish_one, module, params) do
+    apply(module, :publish_one, [params])
   end
 
-  def request_subscription(websub) do
-    %{"op" => "request_subscription", "websub_id" => websub.id}
-    |> SubscriberWorker.new(worker_args(:federator_outgoing))
-    |> Pleroma.Repo.insert()
+  def perform(:publish, activity) do
+    Logger.debug(fn -> "Running publish for #{activity.data["id"]}" end)
+
+    with %User{} = actor <- User.get_cached_by_ap_id(activity.data["actor"]),
+         {:ok, actor} <- User.ensure_keys_present(actor) do
+      Publisher.publish(actor, activity)
+    end
   end
 
-  def refresh_subscriptions(worker_args \\ []) do
-    %{"op" => "refresh_subscriptions"}
-    |> SubscriberWorker.new(worker_args ++ [max_attempts: 1] ++ worker_args(:federator_outgoing))
-    |> Pleroma.Repo.insert()
+  def perform(:incoming_ap_doc, params) do
+    Logger.debug("Handling incoming AP activity")
+
+    actor =
+      params
+      |> Map.get("actor")
+      |> Utils.get_ap_id()
+
+    # NOTE: we use the actor ID to do the containment, this is fine because an
+    # actor shouldn't be acting on objects outside their own AP server.
+    with {_, {:ok, _user}} <- {:actor, ap_enabled_actor(actor)},
+         nil <- Activity.normalize(params["id"]),
+         {_, :ok} <-
+           {:correct_origin?, Containment.contain_origin_from_id(actor, params)},
+         {:ok, activity} <- Transmogrifier.handle_incoming(params) do
+      {:ok, activity}
+    else
+      {:correct_origin?, _} ->
+        Logger.debug("Origin containment failure for #{params["id"]}")
+        {:error, :origin_containment_failed}
+
+      %Activity{} ->
+        Logger.debug("Already had #{params["id"]}")
+        {:error, :already_present}
+
+      {:actor, e} ->
+        Logger.debug("Unhandled actor #{actor}, #{inspect(e)}")
+        {:error, e}
+
+      e ->
+        # Just drop those for now
+        Logger.debug(fn -> "Unhandled activity\n" <> Jason.encode!(params, pretty: true) end)
+        {:error, e}
+    end
   end
 
-  defp worker_args(queue) do
-    if max_attempts = Pleroma.Config.get([:workers, :retries, queue]) do
-      [max_attempts: max_attempts]
+  def ap_enabled_actor(id) do
+    user = User.get_cached_by_ap_id(id)
+
+    if User.ap_enabled?(user) do
+      {:ok, user}
     else
-      []
+      ActivityPub.make_user_from_ap_id(id)
     end
   end
 end