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# 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.ObjectValidators.AddRemoveValidator do
use Ecto.Schema
import Ecto.Changeset
import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
require Pleroma.Constants
alias Pleroma.EctoType.ActivityPub.ObjectValidators
alias Pleroma.User
@primary_key false
embedded_schema do
field(:id, ObjectValidators.ObjectID, primary_key: true)
field(:target)
field(:object, ObjectValidators.ObjectID)
field(:actor, ObjectValidators.ObjectID)
field(:type)
field(:to, ObjectValidators.Recipients, default: [])
field(:cc, ObjectValidators.Recipients, default: [])
end
def cast_and_validate(data) do
{:ok, actor} = User.get_or_fetch_by_ap_id(data["actor"])
{:ok, actor} = maybe_refetch_user(actor)
data
|> maybe_fix_data_for_mastodon(actor)
|> cast_data()
|> validate_data(actor)
end
defp maybe_fix_data_for_mastodon(data, actor) do
# Mastodon sends pin/unpin objects without id, to, cc fields
data
|> Map.put_new("id", Pleroma.Web.ActivityPub.Utils.generate_activity_id())
|> Map.put_new("to", [Pleroma.Constants.as_public()])
|> Map.put_new("cc", [actor.follower_address])
end
defp cast_data(data) do
cast(%__MODULE__{}, data, __schema__(:fields))
end
defp validate_data(changeset, actor) do
changeset
|> validate_required([:id, :target, :object, :actor, :type, :to, :cc])
|> validate_inclusion(:type, ~w(Add Remove))
|> validate_actor_presence()
|> validate_collection_belongs_to_actor(actor)
|> validate_object_presence()
end
defp validate_collection_belongs_to_actor(changeset, actor) do
validate_change(changeset, :target, fn :target, target ->
if target == actor.featured_address do
[]
else
[target: "collection doesn't belong to actor"]
end
end)
end
defp maybe_refetch_user(%User{featured_address: address} = user) when is_binary(address) do
{:ok, user}
end
defp maybe_refetch_user(%User{ap_id: ap_id}) do
Pleroma.Web.ActivityPub.Transmogrifier.upgrade_user_from_ap_id(ap_id)
end
end
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