968 lines
34 KiB
Elixir
968 lines
34 KiB
Elixir
# Portions of this file are derived from Pleroma:
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# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social>
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# SPDX-License-Identifier: AGPL-3.0-only
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# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/web/activity_pub/transmogrifier.ex
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defmodule Mobilizon.Federation.ActivityPub.Transmogrifier do
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@moduledoc """
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A module to handle coding from internal to wire ActivityPub and back.
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"""
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alias Mobilizon.{Actors, Discussions, Events, Posts, Resources, Todos}
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alias Mobilizon.Actors.{Actor, Follower, Member}
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alias Mobilizon.Discussions.Comment
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alias Mobilizon.Events.{Event, Participant}
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alias Mobilizon.Posts.Post
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alias Mobilizon.Resources.Resource
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alias Mobilizon.Todos.{Todo, TodoList}
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alias Mobilizon.Federation.ActivityPub
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alias Mobilizon.Federation.ActivityPub.{Activity, Relay, Utils}
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alias Mobilizon.Federation.ActivityPub.Types.Ownable
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alias Mobilizon.Federation.ActivityStream.{Converter, Convertible}
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alias Mobilizon.Tombstone
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alias Mobilizon.Web.Endpoint
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alias Mobilizon.Web.Email.{Group, Participation}
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require Logger
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def handle_incoming(%{"id" => nil}), do: :error
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def handle_incoming(%{"id" => ""}), do: :error
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def handle_incoming(%{"type" => "Flag"} = data) do
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with params <- Converter.Flag.as_to_model(data) do
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params = %{
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reporter_id: params["reporter"].id,
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reported_id: params["reported"].id,
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comments_ids: params["comments"] |> Enum.map(& &1.id),
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content: params["content"] || "",
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additional: %{
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"cc" => [params["reported"].url]
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},
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event_id: if(is_nil(params["event"]), do: nil, else: params["event"].id || nil),
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local: false
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}
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ActivityPub.flag(params, false)
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end
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end
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@doc """
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Handles a `Create` activity for `Note` (comments) objects
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The following actions are performed
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* Fetch the author of the activity
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* Convert the ActivityStream data to the comment model format (it also finds and inserts tags)
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* Get (by it's URL) or create the comment with this data
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* Insert eventual mentions in the database
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* Convert the comment back in ActivityStreams data
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* Wrap this data back into a `Create` activity
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* Return the activity and the comment object
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"""
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def handle_incoming(%{"type" => "Create", "object" => %{"type" => "Note"} = object}) do
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Logger.info("Handle incoming to create notes")
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with object_data when is_map(object_data) <-
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object |> Converter.Comment.as_to_model_data(),
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{:existing_comment, {:error, :comment_not_found}} <-
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{:existing_comment, Discussions.get_comment_from_url_with_preload(object_data.url)},
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object_data <- transform_object_data_for_discussion(object_data) do
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# Check should be better
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{:ok, %Activity{} = activity, entity} =
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if is_data_for_comment_or_discussion?(object_data) do
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Logger.debug("Chosing to create a regular comment")
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ActivityPub.create(:comment, object_data, false)
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else
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Logger.debug("Chosing to initialize or add a comment to a conversation")
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ActivityPub.create(:discussion, object_data, false)
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end
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{:ok, activity, entity}
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else
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{:existing_comment, {:ok, %Comment{} = comment}} ->
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{:ok, nil, comment}
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end
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end
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@doc """
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Handles a `Create` activity for `Event` objects
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The following actions are performed
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* Fetch the author of the activity
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* Convert the ActivityStream data to the event model format (it also finds and inserts tags)
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* Get (by it's URL) or create the event with this data
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* Insert eventual mentions in the database
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* Convert the event back in ActivityStreams data
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* Wrap this data back into a `Create` activity
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* Return the activity and the event object
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"""
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def handle_incoming(%{"type" => "Create", "object" => %{"type" => "Event"} = object}) do
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Logger.info("Handle incoming to create event")
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with object_data when is_map(object_data) <-
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object |> Converter.Event.as_to_model_data(),
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{:existing_event, nil} <- {:existing_event, Events.get_event_by_url(object_data.url)},
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{:ok, %Activity{} = activity, %Event{} = event} <-
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ActivityPub.create(:event, object_data, false) do
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{:ok, activity, event}
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else
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{:existing_event, %Event{} = event} -> {:ok, nil, event}
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{:error, _, _} -> :error
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{:error, _} -> :error
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end
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end
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def handle_incoming(%{
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"type" => "Create",
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"object" => %{"type" => "Group", "id" => group_url} = _object
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}) do
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Logger.info("Handle incoming to create a group")
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with {:ok, %Actor{} = group} <- ActivityPub.get_or_fetch_actor_by_url(group_url) do
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{:ok, nil, group}
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end
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end
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def handle_incoming(%{
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"type" => "Create",
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"object" => %{"type" => "Member"} = object
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}) do
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Logger.info("Handle incoming to create a member")
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with object_data when is_map(object_data) <-
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object |> Converter.Member.as_to_model_data(),
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{:existing_member, nil} <-
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{:existing_member, Actors.get_member_by_url(object_data.url)},
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{:ok, %Activity{} = activity, %Member{} = member} <-
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ActivityPub.join_group(object_data, false) do
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{:ok, activity, member}
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else
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{:existing_member, %Member{} = member} ->
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{:ok, nil, member}
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end
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end
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def handle_incoming(%{
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"type" => "Create",
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"object" =>
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%{"type" => "Article", "actor" => _actor, "attributedTo" => _attributed_to} = object
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}) do
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Logger.info("Handle incoming to create articles")
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with object_data when is_map(object_data) <-
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object |> Converter.Post.as_to_model_data(),
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{:existing_post, nil} <-
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{:existing_post, Posts.get_post_by_url(object_data.url)},
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{:ok, %Activity{} = activity, %Post{} = post} <-
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ActivityPub.create(:post, object_data, false) do
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{:ok, activity, post}
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else
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{:existing_post, %Post{} = post} ->
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{:ok, nil, post}
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end
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end
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# This is a hack to handle Tombstones fetched by AP
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def handle_incoming(%{
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"type" => "Create",
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"object" => %{"type" => "Tombstone", "id" => object_url} = _object
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}) do
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Logger.info("Handle incoming to create a tombstone")
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case ActivityPub.fetch_object_from_url(object_url, force: true) do
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# We already have the tombstone, object is probably already deleted
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{:ok, %Tombstone{} = tombstone} ->
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{:ok, nil, tombstone}
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# Hack because deleted comments
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{:ok, %Comment{deleted_at: deleted_at} = comment} when not is_nil(deleted_at) ->
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{:ok, nil, comment}
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{:ok, entity} ->
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ActivityPub.delete(entity, Relay.get_actor(), false)
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end
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end
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def handle_incoming(
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%{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = _data
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) do
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with {:ok, %Actor{} = followed} <- ActivityPub.get_or_fetch_actor_by_url(followed, true),
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{:ok, %Actor{} = follower} <- ActivityPub.get_or_fetch_actor_by_url(follower),
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{:ok, activity, object} <- ActivityPub.follow(follower, followed, id, false) do
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{:ok, activity, object}
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else
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e ->
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Logger.warn("Unable to handle Follow activity #{inspect(e)}")
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:error
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end
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end
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def handle_incoming(%{
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"type" => "Create",
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"object" => %{"type" => "TodoList", "id" => object_url} = object,
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"actor" => actor_url
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}) do
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Logger.info("Handle incoming to create a todo list")
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with {:existing_todo_list, nil} <-
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{:existing_todo_list, Todos.get_todo_list_by_url(object_url)},
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{:ok, %Actor{url: actor_url}} <- ActivityPub.get_or_fetch_actor_by_url(actor_url),
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object_data when is_map(object_data) <-
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object |> Converter.TodoList.as_to_model_data(),
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{:ok, %Activity{} = activity, %TodoList{} = todo_list} <-
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ActivityPub.create(:todo_list, object_data, false, %{"actor" => actor_url}) do
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{:ok, activity, todo_list}
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else
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{:error, :group_not_found} -> :error
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{:existing_todo_list, %TodoList{} = todo_list} -> {:ok, nil, todo_list}
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end
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end
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def handle_incoming(%{
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"type" => "Create",
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"object" => %{"type" => "Todo", "id" => object_url} = object
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}) do
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Logger.info("Handle incoming to create a todo")
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with {:existing_todo, nil} <-
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{:existing_todo, Todos.get_todo_by_url(object_url)},
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object_data <-
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object |> Converter.Todo.as_to_model_data(),
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{:ok, %Activity{} = activity, %Todo{} = todo} <-
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ActivityPub.create(:todo, object_data, false) do
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{:ok, activity, todo}
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else
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{:existing_todo, %Todo{} = todo} -> {:ok, nil, todo}
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end
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end
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def handle_incoming(
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%{
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"type" => activity_type,
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"object" => %{"type" => object_type, "id" => object_url} = object
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} = data
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)
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when activity_type in ["Create", "Add"] and
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object_type in ["Document", "ResourceCollection"] do
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Logger.info("Handle incoming to create a resource")
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Logger.debug(inspect(data))
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with {:existing_resource, nil} <-
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{:existing_resource, Resources.get_resource_by_url(object_url)},
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object_data when is_map(object_data) <-
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object |> Converter.Resource.as_to_model_data(),
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{:member, true} <-
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{:member, Actors.is_member?(object_data.creator_id, object_data.actor_id)},
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{:ok, %Activity{} = activity, %Resource{} = resource} <-
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ActivityPub.create(:resource, object_data, false) do
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{:ok, activity, resource}
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else
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{:existing_resource, %Resource{} = resource} ->
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{:ok, nil, resource}
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{:member, false} ->
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# At some point this should refresh the list of group members
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# if the group is not local before simply returning an error
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:error
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{:error, e} ->
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Logger.debug(inspect(e))
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:error
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end
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end
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def handle_incoming(
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%{
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"type" => "Accept",
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"object" => accepted_object,
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"actor" => _actor,
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"id" => id
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} = data
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) do
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with actor_url <- Utils.get_actor(data),
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{:ok, %Actor{} = actor} <- ActivityPub.get_or_fetch_actor_by_url(actor_url),
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{:object_not_found, {:ok, %Activity{} = activity, object}} <-
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{:object_not_found,
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do_handle_incoming_accept_following(accepted_object, actor) ||
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do_handle_incoming_accept_join(accepted_object, actor)} do
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{:ok, activity, object}
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else
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{:object_not_found, nil} ->
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Logger.warn(
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"Unable to process Accept activity #{inspect(id)}. Object #{inspect(accepted_object)} wasn't found."
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)
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:error
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e ->
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Logger.warn(
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"Unable to process Accept activity #{inspect(id)} for object #{inspect(accepted_object)} only returned #{
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inspect(e)
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}"
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)
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:error
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||
end
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||
end
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||
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def handle_incoming(
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%{"type" => "Reject", "object" => rejected_object, "actor" => _actor, "id" => id} = data
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) do
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with actor_url <- Utils.get_actor(data),
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{:ok, %Actor{} = actor} <- ActivityPub.get_or_fetch_actor_by_url(actor_url),
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{:object_not_found, {:ok, activity, object}} <-
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{:object_not_found,
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do_handle_incoming_reject_following(rejected_object, actor) ||
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do_handle_incoming_reject_join(rejected_object, actor) ||
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do_handle_incoming_reject_invite(rejected_object, actor)} do
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{:ok, activity, object}
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else
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{:object_not_found, nil} ->
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Logger.warn(
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"Unable to process Reject activity #{inspect(id)}. Object #{inspect(rejected_object)} wasn't found."
|
||
)
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||
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||
:error
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||
|
||
e ->
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||
Logger.warn(
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||
"Unable to process Reject activity #{inspect(id)} for object #{inspect(rejected_object)} only returned #{
|
||
inspect(e)
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||
}"
|
||
)
|
||
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||
:error
|
||
end
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||
end
|
||
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||
def handle_incoming(
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||
%{"type" => "Announce", "object" => object, "actor" => _actor, "id" => _id} = data
|
||
) do
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||
with actor_url <- Utils.get_actor(data),
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{:ok, %Actor{id: actor_id, suspended: false} = actor} <-
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ActivityPub.get_or_fetch_actor_by_url(actor_url),
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:ok <- Logger.debug("Fetching contained object"),
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{:ok, entity} <- process_announce_data(object, actor),
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||
:ok <- eventually_create_share(object, entity, actor_id) do
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||
{:ok, nil, entity}
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||
else
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||
e ->
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||
Logger.debug(inspect(e))
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||
:error
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||
end
|
||
end
|
||
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||
def handle_incoming(%{
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||
"type" => "Update",
|
||
"object" => %{"type" => object_type} = object,
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||
"actor" => _actor_id
|
||
})
|
||
when object_type in ["Person", "Group", "Application", "Service", "Organization"] do
|
||
with {:ok, %Actor{suspended: false} = old_actor} <-
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ActivityPub.get_or_fetch_actor_by_url(object["id"]),
|
||
object_data <-
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||
object |> Converter.Actor.as_to_model_data(),
|
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{:ok, %Activity{} = activity, %Actor{} = new_actor} <-
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||
ActivityPub.update(old_actor, object_data, false) do
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||
{:ok, activity, new_actor}
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||
else
|
||
e ->
|
||
Logger.debug(inspect(e))
|
||
:error
|
||
end
|
||
end
|
||
|
||
def handle_incoming(
|
||
%{"type" => "Update", "object" => %{"type" => "Event"} = object, "actor" => _actor} =
|
||
update_data
|
||
) do
|
||
with actor <- Utils.get_actor(update_data),
|
||
{:ok, %Actor{url: actor_url, suspended: false}} <-
|
||
ActivityPub.get_or_fetch_actor_by_url(actor),
|
||
{:ok, %Event{} = old_event} <-
|
||
object |> Utils.get_url() |> ActivityPub.fetch_object_from_url(),
|
||
object_data <- Converter.Event.as_to_model_data(object),
|
||
{:origin_check, true} <- {:origin_check, Utils.origin_check?(actor_url, update_data)},
|
||
{:ok, %Activity{} = activity, %Event{} = new_event} <-
|
||
ActivityPub.update(old_event, object_data, false) do
|
||
{:ok, activity, new_event}
|
||
else
|
||
_e ->
|
||
:error
|
||
end
|
||
end
|
||
|
||
def handle_incoming(
|
||
%{"type" => "Update", "object" => %{"type" => "Note"} = object, "actor" => _actor} =
|
||
update_data
|
||
) do
|
||
Logger.info("Handle incoming to update a note")
|
||
|
||
with actor <- Utils.get_actor(update_data),
|
||
{:ok, %Actor{url: actor_url, suspended: false}} <-
|
||
ActivityPub.get_or_fetch_actor_by_url(actor),
|
||
{:origin_check, true} <- {:origin_check, Utils.origin_check?(actor_url, update_data)},
|
||
object_data <- Converter.Comment.as_to_model_data(object),
|
||
{:ok, old_entity} <- object |> Utils.get_url() |> ActivityPub.fetch_object_from_url(),
|
||
object_data <- transform_object_data_for_discussion(object_data),
|
||
{:ok, %Activity{} = activity, new_entity} <-
|
||
ActivityPub.update(old_entity, object_data, false) do
|
||
{:ok, activity, new_entity}
|
||
else
|
||
_e ->
|
||
:error
|
||
end
|
||
end
|
||
|
||
def handle_incoming(
|
||
%{"type" => "Update", "object" => %{"type" => "Member"} = object, "actor" => _actor} =
|
||
update_data
|
||
) do
|
||
Logger.info("Handle incoming to update a member")
|
||
|
||
with actor <- Utils.get_actor(update_data),
|
||
{:ok, %Actor{url: actor_url, suspended: false} = actor} <-
|
||
ActivityPub.get_or_fetch_actor_by_url(actor),
|
||
{:origin_check, true} <- {:origin_check, Utils.origin_check?(actor_url, update_data)},
|
||
object_data <- Converter.Member.as_to_model_data(object),
|
||
{:ok, old_entity} <- object |> Utils.get_url() |> ActivityPub.fetch_object_from_url(),
|
||
{:ok, %Activity{} = activity, new_entity} <-
|
||
ActivityPub.update(old_entity, object_data, false, %{moderator: actor}) do
|
||
{:ok, activity, new_entity}
|
||
else
|
||
_e ->
|
||
:error
|
||
end
|
||
end
|
||
|
||
def handle_incoming(%{
|
||
"type" => "Update",
|
||
"object" => %{"type" => "Tombstone"} = object,
|
||
"actor" => _actor
|
||
}) do
|
||
Logger.info("Handle incoming to update a tombstone")
|
||
|
||
with object_url <- Utils.get_url(object),
|
||
{:ok, entity} <- ActivityPub.fetch_object_from_url(object_url) do
|
||
ActivityPub.delete(entity, Relay.get_actor(), false)
|
||
else
|
||
{:ok, %Tombstone{} = tombstone} ->
|
||
{:ok, nil, tombstone}
|
||
end
|
||
end
|
||
|
||
def handle_incoming(
|
||
%{
|
||
"type" => "Undo",
|
||
"object" => %{
|
||
"type" => "Announce",
|
||
"object" => object_id,
|
||
"id" => cancelled_activity_id
|
||
},
|
||
"actor" => _actor,
|
||
"id" => id
|
||
} = data
|
||
) do
|
||
with actor <- Utils.get_actor(data),
|
||
{:ok, %Actor{} = actor} <- ActivityPub.get_or_fetch_actor_by_url(actor),
|
||
{:ok, object} <- fetch_obj_helper_as_activity_streams(object_id),
|
||
{:ok, activity, object} <-
|
||
ActivityPub.unannounce(actor, object, id, cancelled_activity_id, false) do
|
||
{:ok, activity, object}
|
||
else
|
||
_e -> :error
|
||
end
|
||
end
|
||
|
||
def handle_incoming(
|
||
%{
|
||
"type" => "Undo",
|
||
"object" => %{"type" => "Follow", "object" => followed},
|
||
"actor" => follower,
|
||
"id" => id
|
||
} = _data
|
||
) do
|
||
with {:ok, %Actor{domain: nil} = followed} <- ActivityPub.get_or_fetch_actor_by_url(followed),
|
||
{:ok, %Actor{} = follower} <- ActivityPub.get_or_fetch_actor_by_url(follower),
|
||
{:ok, activity, object} <- ActivityPub.unfollow(follower, followed, id, false) do
|
||
{:ok, activity, object}
|
||
else
|
||
e ->
|
||
Logger.debug(inspect(e))
|
||
:error
|
||
end
|
||
end
|
||
|
||
# We assume everyone on the same instance as the object
|
||
# or who is member of a group has the right to delete the object
|
||
def handle_incoming(
|
||
%{"type" => "Delete", "object" => object, "actor" => _actor, "id" => _id} = data
|
||
) do
|
||
with actor_url <- Utils.get_actor(data),
|
||
{:ok, %Actor{} = actor} <- ActivityPub.get_or_fetch_actor_by_url(actor_url),
|
||
object_id <- Utils.get_url(object),
|
||
{:ok, object} <- ActivityPub.fetch_object_from_url(object_id),
|
||
{:origin_check, true} <-
|
||
{:origin_check,
|
||
Utils.origin_check_from_id?(actor_url, object_id) ||
|
||
Utils.activity_actor_is_group_member?(actor, object)},
|
||
{:ok, activity, object} <- ActivityPub.delete(object, actor, false) do
|
||
{:ok, activity, object}
|
||
else
|
||
{:origin_check, false} ->
|
||
Logger.warn("Object origin check failed")
|
||
:error
|
||
|
||
e ->
|
||
Logger.debug(inspect(e))
|
||
:error
|
||
end
|
||
end
|
||
|
||
def handle_incoming(
|
||
%{
|
||
"type" => "Join",
|
||
"object" => object,
|
||
"actor" => _actor,
|
||
"id" => id,
|
||
"participationMessage" => note
|
||
} = data
|
||
) do
|
||
with actor <- Utils.get_actor(data),
|
||
{:ok, %Actor{url: _actor_url, suspended: false} = actor} <-
|
||
ActivityPub.get_or_fetch_actor_by_url(actor),
|
||
object <- Utils.get_url(object),
|
||
{:ok, object} <- ActivityPub.fetch_object_from_url(object),
|
||
{:ok, activity, object} <-
|
||
ActivityPub.join(object, actor, false, %{url: id, metadata: %{message: note}}) do
|
||
{:ok, activity, object}
|
||
else
|
||
e ->
|
||
Logger.debug(inspect(e))
|
||
:error
|
||
end
|
||
end
|
||
|
||
def handle_incoming(%{"type" => "Leave", "object" => object, "actor" => actor} = data) do
|
||
with actor <- Utils.get_actor(data),
|
||
{:ok, %Actor{} = actor} <- ActivityPub.get_or_fetch_actor_by_url(actor),
|
||
object <- Utils.get_url(object),
|
||
{:ok, object} <- ActivityPub.fetch_object_from_url(object),
|
||
{:ok, activity, object} <- ActivityPub.leave(object, actor, false) do
|
||
{:ok, activity, object}
|
||
else
|
||
{:only_organizer, true} ->
|
||
Logger.warn(
|
||
"Actor #{inspect(actor)} tried to leave event #{inspect(object)} but it was the only organizer so we didn't detach it"
|
||
)
|
||
|
||
:error
|
||
|
||
_e ->
|
||
:error
|
||
end
|
||
end
|
||
|
||
def handle_incoming(
|
||
%{
|
||
"type" => "Invite",
|
||
"object" => object,
|
||
"actor" => _actor,
|
||
"id" => id,
|
||
"target" => target
|
||
} = data
|
||
) do
|
||
Logger.info("Handle incoming to invite someone")
|
||
|
||
with {:ok, %Actor{} = actor} <-
|
||
data |> Utils.get_actor() |> ActivityPub.get_or_fetch_actor_by_url(),
|
||
{:ok, object} <- object |> Utils.get_url() |> ActivityPub.fetch_object_from_url(),
|
||
{:ok, %Actor{} = target} <-
|
||
target |> Utils.get_url() |> ActivityPub.get_or_fetch_actor_by_url(),
|
||
{:ok, activity, %Member{} = member} <-
|
||
ActivityPub.invite(object, actor, target, false, %{url: id}),
|
||
:ok <- Group.send_invite_to_user(member) do
|
||
{:ok, activity, member}
|
||
end
|
||
end
|
||
|
||
def handle_incoming(
|
||
%{"type" => "Remove", "actor" => actor, "object" => object, "origin" => origin} = data
|
||
) do
|
||
Logger.info("Handle incoming to remove a member from a group")
|
||
|
||
with {:ok, %Actor{id: moderator_id} = moderator} <-
|
||
data |> Utils.get_actor() |> ActivityPub.get_or_fetch_actor_by_url(),
|
||
{:ok, %Actor{id: person_id}} <-
|
||
object |> Utils.get_url() |> ActivityPub.get_or_fetch_actor_by_url(),
|
||
{:ok, %Actor{type: :Group, id: group_id} = group} <-
|
||
origin |> Utils.get_url() |> ActivityPub.get_or_fetch_actor_by_url(),
|
||
{:is_admin, {:ok, %Member{role: role}}}
|
||
when role in [:moderator, :administrator, :creator] <-
|
||
{:is_admin, Actors.get_member(moderator_id, group_id)},
|
||
{:is_member, {:ok, %Member{role: role} = member}} when role != :rejected <-
|
||
{:is_member, Actors.get_member(person_id, group_id)} do
|
||
ActivityPub.remove(member, group, moderator, false)
|
||
else
|
||
{:is_admin, {:ok, %Member{}}} ->
|
||
Logger.warn(
|
||
"Person #{inspect(actor)} is not an admin from #{inspect(origin)} and can't remove member #{
|
||
inspect(object)
|
||
}"
|
||
)
|
||
|
||
{:error, "Member already removed"}
|
||
|
||
{:is_member, {:ok, %Member{role: :rejected}}} ->
|
||
Logger.warn("Member #{inspect(object)} already removed from #{inspect(origin)}")
|
||
{:error, "Member already removed"}
|
||
end
|
||
end
|
||
|
||
#
|
||
# # TODO
|
||
# # Accept
|
||
# # Undo
|
||
#
|
||
# def handle_incoming(
|
||
# %{
|
||
# "type" => "Undo",
|
||
# "object" => %{"type" => "Like", "object" => object_id},
|
||
# "actor" => _actor,
|
||
# "id" => id
|
||
# } = data
|
||
# ) do
|
||
# with actor <- Utils.get_actor(data),
|
||
# %Actor{} = actor <- ActivityPub.get_or_fetch_actor_by_url(actor),
|
||
# {:ok, object} <- fetch_obj_helper(object_id) || fetch_obj_helper(object_id),
|
||
# {:ok, activity, _, _} <- ActivityPub.unlike(actor, object, id, false) do
|
||
# {:ok, activity}
|
||
# else
|
||
# _e -> :error
|
||
# end
|
||
# end
|
||
|
||
def handle_incoming(object) do
|
||
Logger.info("Handing something with type #{object["type"]} not supported")
|
||
Logger.debug(inspect(object))
|
||
{:error, :not_supported}
|
||
end
|
||
|
||
@doc """
|
||
Handle incoming `Accept` activities wrapping a `Follow` activity
|
||
"""
|
||
def do_handle_incoming_accept_following(follow_object, %Actor{} = actor) do
|
||
with {:follow, {:ok, %Follower{approved: false, target_actor: followed} = follow}} <-
|
||
{:follow, get_follow(follow_object)},
|
||
{:same_actor, true} <- {:same_actor, actor.id == followed.id},
|
||
{:ok, %Activity{} = activity, %Follower{approved: true} = follow} <-
|
||
ActivityPub.accept(
|
||
:follow,
|
||
follow,
|
||
false
|
||
) do
|
||
{:ok, activity, follow}
|
||
else
|
||
{:follow, _} ->
|
||
Logger.debug(
|
||
"Tried to handle an Accept activity but it's not containing a Follow activity"
|
||
)
|
||
|
||
nil
|
||
|
||
{:same_actor} ->
|
||
{:error, "Actor who accepted the follow wasn't the target. Quite odd."}
|
||
|
||
{:ok, %Follower{approved: true} = _follow} ->
|
||
{:error, "Follow already accepted"}
|
||
end
|
||
end
|
||
|
||
@doc """
|
||
Handle incoming `Reject` activities wrapping a `Follow` activity
|
||
"""
|
||
def do_handle_incoming_reject_following(follow_object, %Actor{} = actor) do
|
||
with {:follow, {:ok, %Follower{target_actor: followed} = follow}} <-
|
||
{:follow, get_follow(follow_object)},
|
||
{:same_actor, true} <- {:same_actor, actor.id == followed.id},
|
||
{:ok, activity, _} <-
|
||
ActivityPub.reject(:follow, follow) do
|
||
{:ok, activity, follow}
|
||
else
|
||
{:follow, _err} ->
|
||
Logger.debug(
|
||
"Tried to handle a Reject activity but it's not containing a Follow activity"
|
||
)
|
||
|
||
nil
|
||
|
||
{:same_actor} ->
|
||
{:error, "Actor who rejected the follow wasn't the target. Quite odd."}
|
||
|
||
{:ok, %Follower{approved: true} = _follow} ->
|
||
{:error, "Follow already accepted"}
|
||
end
|
||
end
|
||
|
||
# Handle incoming `Accept` activities wrapping a `Join` activity on an event
|
||
defp do_handle_incoming_accept_join(join_object, %Actor{} = actor_accepting) do
|
||
case get_participant(join_object) do
|
||
{:ok, participant} ->
|
||
do_handle_incoming_accept_join_event(participant, actor_accepting)
|
||
|
||
{:error, _err} ->
|
||
case get_member(join_object) do
|
||
{:ok, member} ->
|
||
do_handle_incoming_accept_join_group(member, actor_accepting)
|
||
|
||
{:error, _err} ->
|
||
nil
|
||
end
|
||
end
|
||
end
|
||
|
||
defp do_handle_incoming_accept_join_event(%Participant{role: :participant}, _actor) do
|
||
Logger.debug(
|
||
"Tried to handle an Accept activity on a Join activity with a event object but the participant is already validated"
|
||
)
|
||
|
||
nil
|
||
end
|
||
|
||
defp do_handle_incoming_accept_join_event(
|
||
%Participant{role: role, event: event} = participant,
|
||
%Actor{} = actor_accepting
|
||
)
|
||
when role in [:not_approved, :rejected] do
|
||
# TODO: The actor that accepts the Join activity may another one that the event organizer ?
|
||
# Or maybe for groups it's the group that sends the Accept activity
|
||
with {:same_actor, true} <- {:same_actor, actor_accepting.id == event.organizer_actor_id},
|
||
{:ok, %Activity{} = activity, %Participant{role: :participant} = participant} <-
|
||
ActivityPub.accept(
|
||
:join,
|
||
participant,
|
||
false
|
||
),
|
||
:ok <-
|
||
Participation.send_emails_to_local_user(participant) do
|
||
{:ok, activity, participant}
|
||
else
|
||
{:same_actor} ->
|
||
{:error, "Actor who accepted the join wasn't the event organizer. Quite odd."}
|
||
|
||
{:ok, %Participant{role: :participant} = _follow} ->
|
||
{:error, "Participant"}
|
||
end
|
||
end
|
||
|
||
defp do_handle_incoming_accept_join_group(%Member{role: :member}, _actor) do
|
||
Logger.debug(
|
||
"Tried to handle an Accept activity on a Join activity with a group object but the member is already validated"
|
||
)
|
||
|
||
nil
|
||
end
|
||
|
||
defp do_handle_incoming_accept_join_group(
|
||
%Member{role: role, parent: _group} = member,
|
||
%Actor{} = _actor_accepting
|
||
)
|
||
when role in [:not_approved, :rejected, :invited] do
|
||
# TODO: The actor that accepts the Join activity may another one that the event organizer ?
|
||
# Or maybe for groups it's the group that sends the Accept activity
|
||
with {:ok, %Activity{} = activity, %Member{role: :member} = member} <-
|
||
ActivityPub.accept(
|
||
:invite,
|
||
member,
|
||
false
|
||
) do
|
||
{:ok, activity, member}
|
||
end
|
||
end
|
||
|
||
# Handle incoming `Reject` activities wrapping a `Join` activity on an event
|
||
defp do_handle_incoming_reject_join(join_object, %Actor{} = actor_accepting) do
|
||
with {:join_event, {:ok, %Participant{event: event, role: role} = participant}}
|
||
when role != :rejected <-
|
||
{:join_event, get_participant(join_object)},
|
||
# TODO: The actor that accepts the Join activity may another one that the event organizer ?
|
||
# Or maybe for groups it's the group that sends the Accept activity
|
||
{:same_actor, true} <- {:same_actor, actor_accepting.id == event.organizer_actor_id},
|
||
{:ok, activity, participant} <-
|
||
ActivityPub.reject(:join, participant, false),
|
||
:ok <- Participation.send_emails_to_local_user(participant) do
|
||
{:ok, activity, participant}
|
||
else
|
||
{:join_event, {:ok, %Participant{role: :rejected}}} ->
|
||
Logger.warn(
|
||
"Tried to handle an Reject activity on a Join activity with a event object but the participant is already rejected"
|
||
)
|
||
|
||
nil
|
||
|
||
{:join_event, _err} ->
|
||
Logger.debug(
|
||
"Tried to handle an Reject activity but it's not containing a Join activity on a event"
|
||
)
|
||
|
||
nil
|
||
|
||
{:same_actor} ->
|
||
{:error, "Actor who rejected the join wasn't the event organizer. Quite odd."}
|
||
|
||
{:ok, %Participant{role: :participant} = _follow} ->
|
||
{:error, "Participant"}
|
||
end
|
||
end
|
||
|
||
defp do_handle_incoming_reject_invite(invite_object, %Actor{} = actor_rejecting) do
|
||
with {:invite, {:ok, %Member{role: :invited, actor_id: actor_id} = member}} <-
|
||
{:invite, get_member(invite_object)},
|
||
{:same_actor, true} <- {:same_actor, actor_rejecting.id === actor_id},
|
||
{:ok, activity, member} <-
|
||
ActivityPub.reject(:invite, member, false) do
|
||
{:ok, activity, member}
|
||
end
|
||
end
|
||
|
||
# If the object has been announced by a group let's use one of our members to fetch it
|
||
@spec fetch_object_optionnally_authenticated(String.t(), Actor.t() | any()) ::
|
||
{:ok, struct()} | {:error, any()}
|
||
defp fetch_object_optionnally_authenticated(url, %Actor{type: :Group, id: group_id}) do
|
||
case Actors.get_single_group_member_actor(group_id) do
|
||
%Actor{} = actor ->
|
||
ActivityPub.fetch_object_from_url(url, on_behalf_of: actor, force: true)
|
||
|
||
_err ->
|
||
fetch_object_optionnally_authenticated(url, nil)
|
||
end
|
||
end
|
||
|
||
defp fetch_object_optionnally_authenticated(url, _),
|
||
do: ActivityPub.fetch_object_from_url(url, force: true)
|
||
|
||
defp eventually_create_share(object, entity, actor_id) do
|
||
with object_id <- object |> Utils.get_url(),
|
||
%Actor{id: object_owner_actor_id} <- Ownable.actor(entity) do
|
||
{:ok, %Mobilizon.Share{} = _share} =
|
||
Mobilizon.Share.create(object_id, actor_id, object_owner_actor_id)
|
||
end
|
||
|
||
:ok
|
||
end
|
||
|
||
# Comment initiates a whole discussion only if it has full title
|
||
@spec is_data_for_comment_or_discussion?(map()) :: boolean()
|
||
defp is_data_for_comment_or_discussion?(object_data) do
|
||
is_data_a_discussion_initialization?(object_data) and
|
||
is_nil(object_data.discussion_id)
|
||
end
|
||
|
||
# Comment initiates a whole discussion only if it has full title
|
||
@spec is_data_for_comment_or_discussion?(map()) :: boolean()
|
||
defp is_data_a_discussion_initialization?(object_data) do
|
||
not Map.has_key?(object_data, :title) or
|
||
is_nil(object_data.title) or object_data.title == ""
|
||
end
|
||
|
||
# Comment and conversations have different attributes for actor and groups
|
||
defp transform_object_data_for_discussion(object_data) do
|
||
# Basic comment
|
||
if is_data_a_discussion_initialization?(object_data) do
|
||
object_data
|
||
else
|
||
# Conversation
|
||
object_data
|
||
|> Map.put(:creator_id, object_data.actor_id)
|
||
|> Map.put(:actor_id, object_data.attributed_to_id)
|
||
end
|
||
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_follower_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
|
||
|
||
defp get_participant(join_object) do
|
||
with join_object_id when not is_nil(join_object_id) <- Utils.get_url(join_object),
|
||
{:not_found, %Participant{} = participant} <-
|
||
{:not_found, Events.get_participant_by_url(join_object_id)} do
|
||
{:ok, participant}
|
||
else
|
||
{:not_found, _err} ->
|
||
{:error, "Participant URL not found"}
|
||
|
||
_ ->
|
||
{:error, "ActivityPub ID not found in Accept Join object"}
|
||
end
|
||
end
|
||
|
||
@spec get_member(String.t() | map()) :: {:ok, Member.t()} | {:error, String.t()}
|
||
defp get_member(member_object) do
|
||
with member_object_id when not is_nil(member_object_id) <- Utils.get_url(member_object),
|
||
%Member{} = member <-
|
||
Actors.get_member_by_url(member_object_id) do
|
||
{:ok, member}
|
||
else
|
||
{:error, :member_not_found} ->
|
||
{:error, "Member URL not found"}
|
||
|
||
_ ->
|
||
{:error, "ActivityPub ID not found in Accept Join object"}
|
||
end
|
||
end
|
||
|
||
def prepare_outgoing(%{"type" => _type} = data) do
|
||
data =
|
||
data
|
||
|> Map.merge(Utils.make_json_ld_header())
|
||
|
||
{:ok, data}
|
||
end
|
||
|
||
@spec fetch_obj_helper(map() | String.t()) :: Event.t() | Comment.t() | Actor.t() | any()
|
||
def fetch_obj_helper(object) do
|
||
Logger.debug("fetch_obj_helper")
|
||
Logger.debug("Fetching object #{inspect(object)}")
|
||
|
||
case object |> Utils.get_url() |> ActivityPub.fetch_object_from_url() do
|
||
{:ok, object} ->
|
||
{:ok, object}
|
||
|
||
err ->
|
||
Logger.warn("Error while fetching #{inspect(object)}")
|
||
{:error, err}
|
||
end
|
||
end
|
||
|
||
def fetch_obj_helper_as_activity_streams(object) do
|
||
Logger.debug("fetch_obj_helper_as_activity_streams")
|
||
|
||
with {:ok, object} <- fetch_obj_helper(object) do
|
||
{:ok, Convertible.model_to_as(object)}
|
||
end
|
||
end
|
||
|
||
# Otherwise we need to fetch what's at the URL (this is possible only for objects, not activities)
|
||
defp process_announce_data(%{"id" => url}, %Actor{} = actor),
|
||
do: process_announce_data(url, actor)
|
||
|
||
defp process_announce_data(url, %Actor{} = actor) do
|
||
if Utils.are_same_origin?(url, Endpoint.url()) do
|
||
ActivityPub.fetch_object_from_url(url, force: false)
|
||
else
|
||
fetch_object_optionnally_authenticated(url, actor)
|
||
end
|
||
end
|
||
end
|