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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.ObjectValidators.EventValidator do
   6   use Ecto.Schema
   7
   8   alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
   9   alias Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
  10   alias Pleroma.Web.ActivityPub.Transmogrifier
  11
  12   import Ecto.Changeset
  13
  14   @primary_key false
  15   @derive Jason.Encoder
  16
  17   # Extends from NoteValidator
  18   embedded_schema do
  19     quote do
  20       unquote do
  21         import Elixir.Pleroma.Web.ActivityPub.ObjectValidators.CommonFields
  22         message_fields()
  23         object_fields()
  24         status_object_fields()
  25       end
  26     end
  27   end
  28
  29   def cast_and_apply(data) do
  30     data
  31     |> cast_data
  32     |> apply_action(:insert)
  33   end
  34
  35   def cast_and_validate(data) do
  36     data
  37     |> cast_data()
  38     |> validate_data()
  39   end
  40
  41   def cast_data(data) do
  42     %__MODULE__{}
  43     |> changeset(data)
  44   end
  45
  46   defp fix(data) do
  47     data
  48     |> CommonFixes.fix_actor()
  49     |> CommonFixes.fix_object_defaults()
  50     |> Transmogrifier.fix_emoji()
  51   end
  52
  53   def changeset(struct, data) do
  54     data = fix(data)
  55
  56     struct
  57     |> cast(data, __schema__(:fields) -- [:attachment, :tag])
  58     |> cast_embed(:attachment)
  59     |> cast_embed(:tag)
  60   end
  61
  62   defp validate_data(data_cng) do
  63     data_cng
  64     |> validate_inclusion(:type, ["Event"])
  65     |> validate_required([:id, :actor, :attributedTo, :type, :context, :context_id])
  66     |> CommonValidations.validate_any_presence([:cc, :to])
  67     |> CommonValidations.validate_fields_match([:actor, :attributedTo])
  68     |> CommonValidations.validate_actor_presence()
  69     |> CommonValidations.validate_host_match()
  70   end
  71 end