100 lines
2.4 KiB
Elixir
100 lines
2.4 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator do
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use Ecto.Schema
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alias Pleroma.Object
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alias Pleroma.Web.ActivityPub.ObjectValidators.Types
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alias Pleroma.Web.ActivityPub.Utils
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import Ecto.Changeset
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import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
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@primary_key false
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embedded_schema do
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field(:id, Types.ObjectID, primary_key: true)
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field(:type, :string)
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field(:object, Types.ObjectID)
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field(:actor, Types.ObjectID)
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field(:context, :string)
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field(:to, {:array, :string}, default: [])
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field(:cc, {:array, :string}, default: [])
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end
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def cast_and_validate(data) do
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data
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|> cast_data()
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|> validate_data()
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end
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def cast_data(data) do
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%__MODULE__{}
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|> changeset(data)
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end
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def changeset(struct, data) do
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struct
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|> cast(data, __schema__(:fields))
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|> fix_after_cast()
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end
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def fix_after_cast(cng) do
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cng
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|> fix_recipients()
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|> fix_context()
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end
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def fix_context(cng) do
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object = get_field(cng, :object)
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with nil <- get_field(cng, :context),
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%Object{data: %{"context" => context}} <- Object.get_cached_by_ap_id(object) do
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cng
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|> put_change(:context, context)
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else
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_ ->
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cng
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end
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end
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def fix_recipients(cng) do
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to = get_field(cng, :to)
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cc = get_field(cng, :cc)
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object = get_field(cng, :object)
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with {[], []} <- {to, cc},
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%Object{data: %{"actor" => actor}} <- Object.get_cached_by_ap_id(object),
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{:ok, actor} <- Types.ObjectID.cast(actor) do
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cng
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|> put_change(:to, [actor])
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else
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_ ->
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cng
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end
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end
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def validate_data(data_cng) do
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data_cng
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|> validate_inclusion(:type, ["Like"])
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|> validate_required([:id, :type, :object, :actor, :context, :to, :cc])
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|> validate_actor_presence()
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|> validate_object_presence()
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|> validate_existing_like()
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end
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def validate_existing_like(%{changes: %{actor: actor, object: object}} = cng) do
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if Utils.get_existing_like(actor, %{data: %{"id" => object}}) do
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cng
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|> add_error(:actor, "already liked this object")
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|> add_error(:object, "already liked by this actor")
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else
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cng
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end
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end
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def validate_existing_like(cng), do: cng
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end
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