107 lines
2.9 KiB
Elixir
107 lines
2.9 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 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.AnnounceValidator do
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use Ecto.Schema
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alias Pleroma.EctoType.ActivityPub.ObjectValidators
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alias Pleroma.Object
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alias Pleroma.User
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alias Pleroma.Web.ActivityPub.Utils
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alias Pleroma.Web.ActivityPub.Visibility
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import Ecto.Changeset
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import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
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require Pleroma.Constants
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@primary_key false
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embedded_schema do
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field(:id, ObjectValidators.ObjectID, primary_key: true)
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field(:type, :string)
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field(:object, ObjectValidators.ObjectID)
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field(:actor, ObjectValidators.ObjectID)
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field(:context, :string, autogenerate: {Utils, :generate_context_id, []})
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field(:to, ObjectValidators.Recipients, default: [])
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field(:cc, ObjectValidators.Recipients, default: [])
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field(:published, ObjectValidators.DateTime)
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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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end
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defp validate_data(data_cng) do
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data_cng
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|> validate_inclusion(:type, ["Announce"])
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|> validate_required([:id, :type, :object, :actor, :to, :cc])
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|> validate_actor_presence()
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|> validate_object_presence()
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|> validate_existing_announce()
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|> validate_announcable()
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end
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def validate_announcable(cng) do
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with actor when is_binary(actor) <- get_field(cng, :actor),
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object when is_binary(object) <- get_field(cng, :object),
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%User{} = actor <- User.get_cached_by_ap_id(actor),
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%Object{} = object <- Object.get_cached_by_ap_id(object),
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false <- Visibility.is_public?(object) do
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same_actor = object.data["actor"] == actor.ap_id
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recipients = get_field(cng, :to) ++ get_field(cng, :cc)
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local_public = Utils.as_local_public()
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is_public =
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Enum.member?(recipients, Pleroma.Constants.as_public()) or
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Enum.member?(recipients, local_public)
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cond do
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same_actor && is_public ->
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cng
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|> add_error(:actor, "can not announce this object publicly")
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!same_actor ->
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cng
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|> add_error(:actor, "can not announce this object")
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true ->
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cng
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end
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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_announce(cng) do
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actor = get_field(cng, :actor)
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object = get_field(cng, :object)
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if actor && object && Utils.get_existing_announce(actor, %{data: %{"id" => object}}) do
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cng
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|> add_error(:actor, "already announced this object")
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|> add_error(:object, "already announced 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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end
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