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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations do
import Ecto.Changeset
alias Pleroma.Activity
alias Pleroma.Object
alias Pleroma.User
def validate_recipients_presence(cng, fields \\ [:to, :cc]) do
non_empty =
fields
|> Enum.map(fn field -> get_field(cng, field) end)
|> Enum.any?(fn
[] -> false
_ -> true
end)
if non_empty do
cng
else
fields
|> Enum.reduce(cng, fn field, cng ->
cng
|> add_error(field, "no recipients in any field")
end)
end
end
def validate_actor_presence(cng, options \\ []) do
field_name = Keyword.get(options, :field_name, :actor)
cng
|> validate_change(field_name, fn field_name, actor ->
case User.get_cached_by_ap_id(actor) do
%User{deactivated: true} ->
[{field_name, "user is deactivated"}]
%User{} ->
[]
_ ->
[{field_name, "can't find user"}]
end
end)
end
def validate_object_presence(cng, options \\ []) do
field_name = Keyword.get(options, :field_name, :object)
allowed_types = Keyword.get(options, :allowed_types, false)
cng
|> validate_change(field_name, fn field_name, object_id ->
object = Object.get_cached_by_ap_id(object_id) || Activity.get_by_ap_id(object_id)
cond do
!object ->
[{field_name, "can't find object"}]
object && allowed_types && object.data["type"] not in allowed_types ->
[{field_name, "object not in allowed types"}]
true ->
[]
end
end)
end
def validate_object_or_user_presence(cng, options \\ []) do
field_name = Keyword.get(options, :field_name, :object)
options = Keyword.put(options, :field_name, field_name)
actor_cng =
cng
|> validate_actor_presence(options)
object_cng =
cng
|> validate_object_presence(options)
if actor_cng.valid?, do: actor_cng, else: object_cng
end
end
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