+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Web.ActivityPub.SideEffects do
@moduledoc """
This module looks at an inserted object and executes the side effects that it
"""
alias Pleroma.Activity
alias Pleroma.Activity.Ir.Topics
- alias Pleroma.ActivityExpiration
alias Pleroma.Chat
alias Pleroma.Chat.MessageReference
alias Pleroma.FollowingRelationship
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
+ alias Pleroma.Web.ActivityPub.Builder
alias Pleroma.Web.ActivityPub.Pipeline
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.Push
alias Pleroma.Web.Streamer
- alias Pleroma.Workers.BackgroundWorker
+ require Logger
+
+ @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+ @ap_streamer Pleroma.Config.get([:side_effects, :ap_streamer], ActivityPub)
+ @logger Pleroma.Config.get([:side_effects, :logger], Logger)
+
+ @behaviour Pleroma.Web.ActivityPub.SideEffects.Handling
+
+ @impl true
def handle(object, meta \\ [])
+ # Task this handles
+ # - Follows
+ # - Sends a notification
+ @impl true
+ def handle(
+ %{
+ data: %{
+ "actor" => actor,
+ "type" => "Accept",
+ "object" => follow_activity_id
+ }
+ } = object,
+ meta
+ ) do
+ with %Activity{actor: follower_id} = follow_activity <-
+ Activity.get_by_ap_id(follow_activity_id),
+ %User{} = followed <- User.get_cached_by_ap_id(actor),
+ %User{} = follower <- User.get_cached_by_ap_id(follower_id),
+ {:ok, follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "accept"),
+ {:ok, _follower, followed} <-
+ FollowingRelationship.update(follower, followed, :follow_accept) do
+ Notification.update_notification_type(followed, follow_activity)
+ end
+
+ {:ok, object, meta}
+ end
+
+ # Task this handles
+ # - Rejects all existing follow activities for this person
+ # - Updates the follow state
+ # - Dismisses notification
+ @impl true
+ def handle(
+ %{
+ data: %{
+ "actor" => actor,
+ "type" => "Reject",
+ "object" => follow_activity_id
+ }
+ } = object,
+ meta
+ ) do
+ with %Activity{actor: follower_id} = follow_activity <-
+ Activity.get_by_ap_id(follow_activity_id),
+ %User{} = followed <- User.get_cached_by_ap_id(actor),
+ %User{} = follower <- User.get_cached_by_ap_id(follower_id),
+ {:ok, _follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "reject") do
+ FollowingRelationship.update(follower, followed, :follow_reject)
+ Notification.dismiss(follow_activity)
+ end
+
+ {:ok, object, meta}
+ end
+
# Tasks this handle
# - Follows if possible
# - Sends a notification
# - Generates accept or reject if appropriate
+ @impl true
def handle(
%{
data: %{
) do
with %User{} = follower <- User.get_cached_by_ap_id(following_user),
%User{} = followed <- User.get_cached_by_ap_id(followed_user),
- {_, {:ok, _}, _, _} <-
+ {_, {:ok, _, _}, _, _} <-
{:following, User.follow(follower, followed, :follow_pending), follower, followed} do
- if followed.local && !followed.locked do
- Utils.update_follow_state_for_all(object, "accept")
- FollowingRelationship.update(follower, followed, :follow_accept)
- User.update_follower_count(followed)
- User.update_following_count(follower)
-
- %{
- to: [following_user],
- actor: followed,
- object: follow_id,
- local: true
- }
- |> ActivityPub.accept()
+ if followed.local && !followed.is_locked do
+ {:ok, accept_data, _} = Builder.accept(followed, object)
+ {:ok, _activity, _} = Pipeline.common_pipeline(accept_data, local: true)
end
else
- {:following, {:error, _}, follower, followed} ->
- Utils.update_follow_state_for_all(object, "reject")
- FollowingRelationship.update(follower, followed, :follow_reject)
-
- if followed.local do
- %{
- to: [follower.ap_id],
- actor: followed,
- object: follow_id,
- local: true
- }
- |> ActivityPub.reject()
- end
+ {:following, {:error, _}, _follower, followed} ->
+ {:ok, reject_data, _} = Builder.reject(followed, object)
+ {:ok, _activity, _} = Pipeline.common_pipeline(reject_data, local: true)
_ ->
nil
# Tasks this handles:
# - Unfollow and block
+ @impl true
def handle(
%{data: %{"type" => "Block", "object" => blocked_user, "actor" => blocking_user}} =
object,
#
# For a local user, we also get a changeset with the full information, so we
# can update non-federating, non-activitypub settings as well.
+ @impl true
def handle(%{data: %{"type" => "Update", "object" => updated_object}} = object, meta) do
if changeset = Keyword.get(meta, :user_update_changeset) do
changeset
# Tasks this handles:
# - Add like to object
# - Set up notification
+ @impl true
def handle(%{data: %{"type" => "Like"}} = object, meta) do
liked_object = Object.get_by_ap_id(object.data["object"])
Utils.add_like_to_object(object, liked_object)
# - Rollback if we couldn't create it
# - Increase the user note count
# - Increase the reply count
+ # - Increase replies count
+ # - Set up ActivityExpiration
# - Set up notifications
+ @impl true
def handle(%{data: %{"type" => "Create"}} = activity, meta) do
with {:ok, object, meta} <- handle_object_creation(meta[:object_data], meta),
%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
{:ok, notifications} = Notification.create_notifications(activity, do_send: false)
{:ok, _user} = ActivityPub.increase_note_count_if_public(user, object)
- if in_reply_to = object.data["inReplyTo"] do
+ if in_reply_to = object.data["inReplyTo"] && object.data["type"] != "Answer" do
Object.increase_replies_count(in_reply_to)
end
- if expires_at = activity.data["expires_at"] do
- ActivityExpiration.create(activity, expires_at)
- end
-
- BackgroundWorker.enqueue("fetch_data_for_activity", %{"activity_id" => activity.id})
+ ConcurrentLimiter.limit(Pleroma.Web.RichMedia.Helpers, fn ->
+ Task.start(fn -> Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity) end)
+ end)
meta =
meta
# - Add announce to object
# - Set up notification
# - Stream out the announce
+ @impl true
def handle(%{data: %{"type" => "Announce"}} = object, meta) do
announced_object = Object.get_by_ap_id(object.data["object"])
user = User.get_cached_by_ap_id(object.data["actor"])
{:ok, object, meta}
end
+ @impl true
def handle(%{data: %{"type" => "Undo", "object" => undone_object}} = object, meta) do
with undone_object <- Activity.get_by_ap_id(undone_object),
:ok <- handle_undoing(undone_object) do
# Tasks this handles:
# - Add reaction to object
# - Set up notification
+ @impl true
def handle(%{data: %{"type" => "EmojiReact"}} = object, meta) do
reacted_object = Object.get_by_ap_id(object.data["object"])
Utils.add_emoji_reaction_to_object(object, reacted_object)
# - Reduce the user note count
# - Reduce the reply count
# - Stream out the activity
+ @impl true
def handle(%{data: %{"type" => "Delete", "object" => deleted_object}} = object, meta) do
deleted_object =
- Object.normalize(deleted_object, false) || User.get_cached_by_ap_id(deleted_object)
+ Object.normalize(deleted_object, fetch: false) ||
+ User.get_cached_by_ap_id(deleted_object)
result =
case deleted_object do
%Object{} ->
- with {:ok, deleted_object, activity} <- Object.delete(deleted_object),
- %User{} = user <- User.get_cached_by_ap_id(deleted_object.data["actor"]) do
- User.remove_pinnned_activity(user, activity)
+ with {:ok, deleted_object, _activity} <- Object.delete(deleted_object),
+ {_, actor} when is_binary(actor) <- {:actor, deleted_object.data["actor"]},
+ %User{} = user <- User.get_cached_by_ap_id(actor) do
+ User.remove_pinned_object_id(user, deleted_object.data["id"])
{:ok, user} = ActivityPub.decrease_note_count_if_public(user, deleted_object)
MessageReference.delete_for_object(deleted_object)
- ActivityPub.stream_out(object)
- ActivityPub.stream_out_participations(deleted_object, user)
+ @ap_streamer.stream_out(object)
+ @ap_streamer.stream_out_participations(deleted_object, user)
:ok
+ else
+ {:actor, _} ->
+ @logger.error("The object doesn't have an actor: #{inspect(deleted_object)}")
+ :no_object_actor
end
%User{} ->
end
end
+ # Tasks this handles:
+ # - adds pin to user
+ # - removes expiration job for pinned activity, if was set for expiration
+ @impl true
+ def handle(%{data: %{"type" => "Add"} = data} = object, meta) do
+ with %User{} = user <- User.get_cached_by_ap_id(data["actor"]),
+ {:ok, _user} <- User.add_pinned_object_id(user, data["object"]) do
+ # if pinned activity was scheduled for deletion, we remove job
+ if expiration = Pleroma.Workers.PurgeExpiredActivity.get_expiration(meta[:activity_id]) do
+ Oban.cancel_job(expiration.id)
+ end
+
+ {:ok, object, meta}
+ else
+ nil ->
+ {:error, :user_not_found}
+
+ {:error, changeset} ->
+ if changeset.errors[:pinned_objects] do
+ {:error, :pinned_statuses_limit_reached}
+ else
+ changeset.errors
+ end
+ end
+ end
+
+ # Tasks this handles:
+ # - removes pin from user
+ # - removes corresponding Add activity
+ # - if activity had expiration, recreates activity expiration job
+ @impl true
+ def handle(%{data: %{"type" => "Remove"} = data} = object, meta) do
+ with %User{} = user <- User.get_cached_by_ap_id(data["actor"]),
+ {:ok, _user} <- User.remove_pinned_object_id(user, data["object"]) do
+ data["object"]
+ |> Activity.add_by_params_query(user.ap_id, user.featured_address)
+ |> Repo.delete_all()
+
+ # if pinned activity was scheduled for deletion, we reschedule it for deletion
+ if meta[:expires_at] do
+ # MRF.ActivityExpirationPolicy used UTC timestamps for expires_at in original implementation
+ {:ok, expires_at} =
+ Pleroma.EctoType.ActivityPub.ObjectValidators.DateTime.cast(meta[:expires_at])
+
+ Pleroma.Workers.PurgeExpiredActivity.enqueue(%{
+ activity_id: meta[:activity_id],
+ expires_at: expires_at
+ })
+ end
+
+ {:ok, object, meta}
+ else
+ nil -> {:error, :user_not_found}
+ error -> error
+ end
+ end
+
# Nothing to do
+ @impl true
def handle(object, meta) do
{:ok, object, meta}
end
streamables =
[[actor, recipient], [recipient, actor]]
+ |> Enum.uniq()
|> Enum.map(fn [user, other_user] ->
if user.local do
{:ok, chat} = Chat.bump_or_create(user.id, other_user.ap_id)
{:ok, cm_ref} = MessageReference.create(chat, object, user.ap_id != actor.ap_id)
+ @cachex.put(
+ :chat_message_id_idempotency_key_cache,
+ cm_ref.id,
+ meta[:idempotency_key]
+ )
+
{
["user", "user:pleroma_chat"],
{user, %{cm_ref | chat: chat, object: object}}
end
end
- def handle_object_creation(%{"type" => "Question"} = object, meta) do
+ def handle_object_creation(%{"type" => objtype} = object, meta)
+ when objtype in ~w[Audio Video Question Event Article] do
with {:ok, object, meta} <- Pipeline.common_pipeline(object, meta) do
{:ok, object, meta}
end
|> Keyword.put(:notifications, notifications ++ existing)
end
+ @impl true
def handle_after_transaction(meta) do
meta
|> send_notifications()
projects / akkoma / blobdiff