like_validator.ex (1990B)
- # Pleroma: A lightweight social networking server
- # Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
- # SPDX-License-Identifier: AGPL-3.0-only
- defmodule Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator do
- use Ecto.Schema
- alias Pleroma.Object
- alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
- alias Pleroma.Web.ActivityPub.Utils
- import Ecto.Changeset
- import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
- @primary_key false
- embedded_schema do
- quote do
- unquote do
- import Elixir.Pleroma.Web.ActivityPub.ObjectValidators.CommonFields
- message_fields()
- activity_fields()
- end
- end
- field(:context, :string)
- end
- def cast_and_validate(data) do
- data
- |> cast_data()
- |> validate_data()
- end
- def cast_data(data) do
- data =
- data
- |> fix()
- %__MODULE__{}
- |> changeset(data)
- end
- def changeset(struct, data) do
- struct
- |> cast(data, __schema__(:fields))
- end
- defp fix(data) do
- data =
- data
- |> CommonFixes.fix_actor()
- |> CommonFixes.fix_activity_addressing()
- with %Object{} = object <- Object.normalize(data["object"]) do
- data
- |> CommonFixes.fix_activity_context(object)
- |> CommonFixes.fix_object_action_recipients(object)
- else
- _ -> data
- end
- end
- defp validate_data(data_cng) do
- data_cng
- |> validate_inclusion(:type, ["Like"])
- |> validate_required([:id, :type, :object, :actor, :context, :to, :cc])
- |> validate_actor_presence()
- |> validate_object_presence()
- |> validate_existing_like()
- end
- defp validate_existing_like(%{changes: %{actor: actor, object: object}} = cng) do
- if Utils.get_existing_like(actor, %{data: %{"id" => object}}) do
- cng
- |> add_error(:actor, "already liked this object")
- |> add_error(:object, "already liked by this actor")
- else
- cng
- end
- end
- defp validate_existing_like(cng), do: cng
- end