1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.ActivityPub.ObjectValidator do
7 This module is responsible for validating an object (which can be an activity)
8 and checking if it is both well formed and also compatible with our view of
14 alias Pleroma.Web.ActivityPub.ObjectValidators.ChatMessageValidator
15 alias Pleroma.Web.ActivityPub.ObjectValidators.CreateChatMessageValidator
16 alias Pleroma.Web.ActivityPub.ObjectValidators.DeleteValidator
17 alias Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator
18 alias Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator
19 alias Pleroma.Web.ActivityPub.ObjectValidators.Types
20 alias Pleroma.Web.ActivityPub.ObjectValidators.UndoValidator
22 @spec validate(map(), keyword()) :: {:ok, map(), keyword()} | {:error, any()}
23 def validate(object, meta)
25 def validate(%{"type" => "Undo"} = object, meta) do
28 |> UndoValidator.cast_and_validate()
29 |> Ecto.Changeset.apply_action(:insert) do
30 object = stringify_keys(object)
35 def validate(%{"type" => "Delete"} = object, meta) do
36 with cng <- DeleteValidator.cast_and_validate(object),
37 do_not_federate <- DeleteValidator.do_not_federate?(cng),
38 {:ok, object} <- Ecto.Changeset.apply_action(cng, :insert) do
39 object = stringify_keys(object)
40 meta = Keyword.put(meta, :do_not_federate, do_not_federate)
45 def validate(%{"type" => "Like"} = object, meta) do
48 |> LikeValidator.cast_and_validate()
49 |> Ecto.Changeset.apply_action(:insert) do
50 object = stringify_keys(object)
55 def validate(%{"type" => "ChatMessage"} = object, meta) do
58 |> ChatMessageValidator.cast_and_validate()
59 |> Ecto.Changeset.apply_action(:insert) do
60 object = stringify_keys(object)
65 def validate(%{"type" => "EmojiReact"} = object, meta) do
68 |> EmojiReactValidator.cast_and_validate()
69 |> Ecto.Changeset.apply_action(:insert) do
70 object = stringify_keys(object |> Map.from_struct())
75 def validate(%{"type" => "Create", "object" => object} = create_activity, meta) do
76 with {:ok, object_data} <- cast_and_apply(object),
77 meta = Keyword.put(meta, :object_data, object_data |> stringify_keys),
78 {:ok, create_activity} <-
80 |> CreateChatMessageValidator.cast_and_validate(meta)
81 |> Ecto.Changeset.apply_action(:insert) do
82 create_activity = stringify_keys(create_activity)
83 {:ok, create_activity, meta}
87 def cast_and_apply(%{"type" => "ChatMessage"} = object) do
88 ChatMessageValidator.cast_and_apply(object)
91 def cast_and_apply(o), do: {:error, {:validator_not_set, o}}
93 def stringify_keys(%{__struct__: _} = object) do
99 def stringify_keys(object) when is_map(object) do
101 |> Map.new(fn {key, val} -> {to_string(key), stringify_keys(val)} end)
104 def stringify_keys(object) when is_list(object) do
106 |> Enum.map(&stringify_keys/1)
109 def stringify_keys(object), do: object
111 def fetch_actor(object) do
112 with {:ok, actor} <- Types.ObjectID.cast(object["actor"]) do
113 User.get_or_fetch_by_ap_id(actor)
117 def fetch_actor_and_object(object) do
119 Object.normalize(object["object"])