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
12 alias Pleroma.Activity
13 alias Pleroma.EctoType.ActivityPub.ObjectValidators
16 alias Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator
17 alias Pleroma.Web.ActivityPub.ObjectValidators.BlockValidator
18 alias Pleroma.Web.ActivityPub.ObjectValidators.ChatMessageValidator
19 alias Pleroma.Web.ActivityPub.ObjectValidators.CreateChatMessageValidator
20 alias Pleroma.Web.ActivityPub.ObjectValidators.DeleteValidator
21 alias Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator
22 alias Pleroma.Web.ActivityPub.ObjectValidators.FollowValidator
23 alias Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator
24 alias Pleroma.Web.ActivityPub.ObjectValidators.UndoValidator
25 alias Pleroma.Web.ActivityPub.ObjectValidators.UpdateValidator
27 @spec validate(map(), keyword()) :: {:ok, map(), keyword()} | {:error, any()}
28 def validate(object, meta)
30 def validate(%{"type" => "Follow"} = object, meta) do
33 |> FollowValidator.cast_and_validate()
34 |> Ecto.Changeset.apply_action(:insert) do
35 object = stringify_keys(object)
40 def validate(%{"type" => "Block"} = block_activity, meta) do
41 with {:ok, block_activity} <-
43 |> BlockValidator.cast_and_validate()
44 |> Ecto.Changeset.apply_action(:insert) do
45 block_activity = stringify_keys(block_activity)
46 outgoing_blocks = Pleroma.Config.get([:activitypub, :outgoing_blocks])
49 if !outgoing_blocks do
50 Keyword.put(meta, :do_not_federate, true)
55 {:ok, block_activity, meta}
59 def validate(%{"type" => "Update"} = update_activity, meta) do
60 with {:ok, update_activity} <-
62 |> UpdateValidator.cast_and_validate()
63 |> Ecto.Changeset.apply_action(:insert) do
64 update_activity = stringify_keys(update_activity)
65 {:ok, update_activity, meta}
69 def validate(%{"type" => "Undo"} = object, meta) do
72 |> UndoValidator.cast_and_validate()
73 |> Ecto.Changeset.apply_action(:insert) do
74 object = stringify_keys(object)
75 undone_object = Activity.get_by_ap_id(object["object"])
79 |> Keyword.put(:object_data, undone_object.data)
85 def validate(%{"type" => "Delete"} = object, meta) do
86 with cng <- DeleteValidator.cast_and_validate(object),
87 do_not_federate <- DeleteValidator.do_not_federate?(cng),
88 {:ok, object} <- Ecto.Changeset.apply_action(cng, :insert) do
89 object = stringify_keys(object)
90 meta = Keyword.put(meta, :do_not_federate, do_not_federate)
95 def validate(%{"type" => "Like"} = object, meta) do
98 |> LikeValidator.cast_and_validate()
99 |> Ecto.Changeset.apply_action(:insert) do
100 object = stringify_keys(object)
105 def validate(%{"type" => "ChatMessage"} = object, meta) do
106 with {:ok, object} <-
108 |> ChatMessageValidator.cast_and_validate()
109 |> Ecto.Changeset.apply_action(:insert) do
110 object = stringify_keys(object)
115 def validate(%{"type" => "EmojiReact"} = object, meta) do
116 with {:ok, object} <-
118 |> EmojiReactValidator.cast_and_validate()
119 |> Ecto.Changeset.apply_action(:insert) do
120 object = stringify_keys(object |> Map.from_struct())
125 def validate(%{"type" => "Create", "object" => object} = create_activity, meta) do
126 with {:ok, object_data} <- cast_and_apply(object),
127 meta = Keyword.put(meta, :object_data, object_data |> stringify_keys),
128 {:ok, create_activity} <-
130 |> CreateChatMessageValidator.cast_and_validate(meta)
131 |> Ecto.Changeset.apply_action(:insert) do
132 create_activity = stringify_keys(create_activity)
133 {:ok, create_activity, meta}
137 def validate(%{"type" => "Announce"} = object, meta) do
138 with {:ok, object} <-
140 |> AnnounceValidator.cast_and_validate()
141 |> Ecto.Changeset.apply_action(:insert) do
142 object = stringify_keys(object |> Map.from_struct())
147 def cast_and_apply(%{"type" => "ChatMessage"} = object) do
148 ChatMessageValidator.cast_and_apply(object)
151 def cast_and_apply(o), do: {:error, {:validator_not_set, o}}
153 def stringify_keys(%{__struct__: _} = object) do
159 def stringify_keys(object) when is_map(object) do
161 |> Map.new(fn {key, val} -> {to_string(key), stringify_keys(val)} end)
164 def stringify_keys(object) when is_list(object) do
166 |> Enum.map(&stringify_keys/1)
169 def stringify_keys(object), do: object
171 def fetch_actor(object) do
172 with {:ok, actor} <- ObjectValidators.ObjectID.cast(object["actor"]) do
173 User.get_or_fetch_by_ap_id(actor)
177 def fetch_actor_and_object(object) do
179 Object.normalize(object["object"], true)