Merge branch 'develop' into feature/database-compaction
[akkoma] / lib / pleroma / web / federator / federator.ex
index 4d6ebff8e42434f7c48b7542fe803fd48bcab6c5..a1f6373a45b0b2d9a3a58249ef12976516cc5d3c 100644 (file)
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Web.Federator do
-  use GenServer
+  alias Pleroma.Activity
   alias Pleroma.User
-  alias Pleroma.Web.{WebFinger, Websub}
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.ActivityPub.Relay
+  alias Pleroma.Web.ActivityPub.Transmogrifier
+  alias Pleroma.Web.ActivityPub.Utils
+  alias Pleroma.Web.ActivityPub.Visibility
+  alias Pleroma.Web.Federator.RetryQueue
+  alias Pleroma.Web.OStatus
+  alias Pleroma.Object.Containment
+  alias Pleroma.Web.Salmon
+  alias Pleroma.Web.WebFinger
+  alias Pleroma.Web.Websub
+
   require Logger
 
   @websub Application.get_env(:pleroma, :websub)
   @ostatus Application.get_env(:pleroma, :ostatus)
-  @httpoison Application.get_env(:pleroma, :httpoison)
-  @max_jobs 10
 
-  def start_link do
-    spawn(fn ->
-      Process.sleep(1000 * 60 * 1) # 1 minute
-      enqueue(:refresh_subscriptions, nil)
-    end)
-    GenServer.start_link(__MODULE__, {:sets.new(), :queue.new()}, name: __MODULE__)
+  def init do
+    # 1 minute
+    Process.sleep(1000 * 60)
+    refresh_subscriptions()
+  end
+
+  # Client API
+
+  def incoming_doc(doc) do
+    PleromaJobQueue.enqueue(:federator_incoming, __MODULE__, [:incoming_doc, doc])
+  end
+
+  def incoming_ap_doc(params) do
+    PleromaJobQueue.enqueue(:federator_incoming, __MODULE__, [:incoming_ap_doc, params])
+  end
+
+  def publish(activity, priority \\ 1) do
+    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:publish, activity], priority)
+  end
+
+  def publish_single_ap(params) do
+    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:publish_single_ap, params])
+  end
+
+  def publish_single_websub(websub) do
+    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:publish_single_websub, websub])
+  end
+
+  def verify_websub(websub) do
+    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:verify_websub, websub])
+  end
+
+  def request_subscription(sub) do
+    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:request_subscription, sub])
+  end
+
+  def refresh_subscriptions do
+    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:refresh_subscriptions])
+  end
+
+  def publish_single_salmon(params) do
+    PleromaJobQueue.enqueue(:federator_outgoing, __MODULE__, [:publish_single_salmon, params])
   end
 
-  def handle(:refresh_subscriptions, _) do
+  # Job Worker Callbacks
+
+  def perform(:refresh_subscriptions) do
     Logger.debug("Federator running refresh subscriptions")
     Websub.refresh_subscriptions()
+
     spawn(fn ->
-      Process.sleep(1000 * 60 * 60 * 6) # 6 hours
-      enqueue(:refresh_subscriptions, nil)
+      # 6 hours
+      Process.sleep(1000 * 60 * 60 * 6)
+      refresh_subscriptions()
     end)
   end
 
-  def handle(:request_subscription, websub) do
+  def perform(:request_subscription, websub) do
     Logger.debug("Refreshing #{websub.topic}")
-    with {:ok, websub } <- Websub.request_subscription(websub) do
+
+    with {:ok, websub} <- Websub.request_subscription(websub) do
       Logger.debug("Successfully refreshed #{websub.topic}")
     else
       _e -> Logger.debug("Couldn't refresh #{websub.topic}")
     end
   end
 
-  def handle(:publish, activity) do
+  def perform(:publish, activity) do
     Logger.debug(fn -> "Running publish for #{activity.data["id"]}" end)
-    with actor when not is_nil(actor) <- User.get_cached_by_ap_id(activity.data["actor"]) do
-      Logger.debug(fn -> "Sending #{activity.data["id"]} out via websub" end)
-      Websub.publish(Pleroma.Web.OStatus.feed_path(actor), actor, activity)
 
+    with actor when not is_nil(actor) <- User.get_cached_by_ap_id(activity.data["actor"]) do
       {:ok, actor} = WebFinger.ensure_keys_present(actor)
-      Logger.debug(fn -> "Sending #{activity.data["id"]} out via salmon" end)
-      Pleroma.Web.Salmon.publish(actor, activity)
+
+      if Visibility.is_public?(activity) do
+        if OStatus.is_representable?(activity) do
+          Logger.info(fn -> "Sending #{activity.data["id"]} out via WebSub" end)
+          Websub.publish(Pleroma.Web.OStatus.feed_path(actor), actor, activity)
+
+          Logger.info(fn -> "Sending #{activity.data["id"]} out via Salmon" end)
+          Pleroma.Web.Salmon.publish(actor, activity)
+        end
+
+        if Keyword.get(Application.get_env(:pleroma, :instance), :allow_relay) do
+          Logger.info(fn -> "Relaying #{activity.data["id"]} out" end)
+          Relay.publish(activity)
+        end
+      end
+
+      Logger.info(fn -> "Sending #{activity.data["id"]} out via AP" end)
+      Pleroma.Web.ActivityPub.ActivityPub.publish(actor, activity)
     end
   end
 
-  def handle(:verify_websub, websub) do
-    Logger.debug(fn -> "Running websub verification for #{websub.id} (#{websub.topic}, #{websub.callback})" end)
+  def perform(:verify_websub, websub) do
+    Logger.debug(fn ->
+      "Running WebSub verification for #{websub.id} (#{websub.topic}, #{websub.callback})"
+    end)
+
     @websub.verify(websub)
   end
 
-  def handle(:incoming_doc, doc) do
-    Logger.debug("Got document, trying to parse")
+  def perform(:incoming_doc, doc) do
+    Logger.info("Got document, trying to parse")
     @ostatus.handle_incoming(doc)
   end
 
-  def handle(:publish_single_websub, %{xml: xml, topic: topic, callback: callback, secret: secret}) do
-    signature = @websub.sign(secret || "", xml)
-    Logger.debug(fn -> "Pushing #{topic} to #{callback}" end)
+  def perform(:incoming_ap_doc, params) do
+    Logger.info("Handling incoming AP activity")
 
-    with {:ok, %{status_code: code}} <- @httpoison.post(callback, xml, [
-                  {"Content-Type", "application/atom+xml"},
-                  {"X-Hub-Signature", "sha1=#{signature}"}
-                ], timeout: 10000, recv_timeout: 20000) do
-      Logger.debug(fn -> "Pushed to #{callback}, code #{code}" end)
-    else e ->
-        Logger.debug(fn -> "Couldn't push to #{callback}, #{inspect(e)}" end)
+    params = Utils.normalize_params(params)
+
+    # 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} <- ap_enabled_actor(params["actor"]),
+         nil <- Activity.normalize(params["id"]),
+         :ok <- Containment.contain_origin_from_id(params["actor"], params),
+         {:ok, activity} <- Transmogrifier.handle_incoming(params) do
+      {:ok, activity}
+    else
+      %Activity{} ->
+        Logger.info("Already had #{params["id"]}")
+        :error
+
+      _e ->
+        # Just drop those for now
+        Logger.info("Unhandled activity")
+        Logger.info(Poison.encode!(params, pretty: 2))
+        :error
     end
   end
 
-  def handle(type, payload) do
-    Logger.debug(fn -> "Unknown task: #{type}" end)
-    {:error, "Don't know what do do with this"}
+  def perform(:publish_single_salmon, params) do
+    Salmon.send_to_user(params)
   end
 
-  def enqueue(type, payload) do
-    if Mix.env == :test do
-      handle(type, payload)
-    else
-      GenServer.cast(__MODULE__, {:enqueue, type, payload})
+  def perform(:publish_single_ap, params) do
+    case ActivityPub.publish_one(params) do
+      {:ok, _} ->
+        :ok
+
+      {:error, _} ->
+        RetryQueue.enqueue(params, ActivityPub)
     end
   end
 
-  def maybe_start_job(running_jobs, queue) do
-    if (:sets.size(running_jobs) < @max_jobs) && !:queue.is_empty(queue) do
-      {{:value, {type, payload}}, queue} = :queue.out(queue)
-      {:ok, pid} = Task.start(fn -> handle(type, payload) end)
-      mref = Process.monitor(pid)
-      {:sets.add_element(mref, running_jobs), queue}
-    else
-      {running_jobs, queue}
+  def perform(
+        :publish_single_websub,
+        %{xml: _xml, topic: _topic, callback: _callback, secret: _secret} = params
+      ) do
+    case Websub.publish_one(params) do
+      {:ok, _} ->
+        :ok
+
+      {:error, _} ->
+        RetryQueue.enqueue(params, Websub)
     end
   end
 
-  def handle_cast({:enqueue, type, payload}, {running_jobs, queue}) do
-    queue = :queue.in({type, payload}, queue)
-    {running_jobs, queue} = maybe_start_job(running_jobs, queue)
-    {:noreply, {running_jobs, queue}}
+  def perform(type, _) do
+    Logger.debug(fn -> "Unknown task: #{type}" end)
+    {:error, "Don't know what to do with this"}
   end
 
-  def handle_info({:DOWN, ref, :process, _pid, _reason}, {running_jobs, queue}) do
-    running_jobs = :sets.del_element(ref, running_jobs)
-    {running_jobs, queue} = maybe_start_job(running_jobs, queue)
-    {:noreply, {running_jobs, queue}}
-  end
+  def ap_enabled_actor(id) do
+    user = User.get_by_ap_id(id)
 
-  def handle_cast(m, state) do
-    IO.inspect("Unknown: #{inspect(m)}, #{inspect(state)}")
-    {:noreply, state}
+    if User.ap_enabled?(user) do
+      {:ok, user}
+    else
+      ActivityPub.make_user_from_ap_id(id)
+    end
   end
 end