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.AnswerValidator
18 alias Pleroma.Web.ActivityPub.ObjectValidators.BlockValidator
19 alias Pleroma.Web.ActivityPub.ObjectValidators.ChatMessageValidator
20 alias Pleroma.Web.ActivityPub.ObjectValidators.CreateChatMessageValidator
21 alias Pleroma.Web.ActivityPub.ObjectValidators.CreateGenericValidator
22 alias Pleroma.Web.ActivityPub.ObjectValidators.DeleteValidator
23 alias Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator
24 alias Pleroma.Web.ActivityPub.ObjectValidators.FollowValidator
25 alias Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator
26 alias Pleroma.Web.ActivityPub.ObjectValidators.QuestionValidator
27 alias Pleroma.Web.ActivityPub.ObjectValidators.UndoValidator
28 alias Pleroma.Web.ActivityPub.ObjectValidators.UpdateValidator
30 @spec validate(map(), keyword()) :: {:ok, map(), keyword()} | {:error, any()}
31 def validate(object, meta)
33 def validate(%{"type" => "Follow"} = object, meta) do
36 |> FollowValidator.cast_and_validate()
37 |> Ecto.Changeset.apply_action(:insert) do
38 object = stringify_keys(object)
43 def validate(%{"type" => "Block"} = block_activity, meta) do
44 with {:ok, block_activity} <-
46 |> BlockValidator.cast_and_validate()
47 |> Ecto.Changeset.apply_action(:insert) do
48 block_activity = stringify_keys(block_activity)
49 outgoing_blocks = Pleroma.Config.get([:activitypub, :outgoing_blocks])
52 if !outgoing_blocks do
53 Keyword.put(meta, :do_not_federate, true)
58 {:ok, block_activity, meta}
62 def validate(%{"type" => "Update"} = update_activity, meta) do
63 with {:ok, update_activity} <-
65 |> UpdateValidator.cast_and_validate()
66 |> Ecto.Changeset.apply_action(:insert) do
67 update_activity = stringify_keys(update_activity)
68 {:ok, update_activity, meta}
72 def validate(%{"type" => "Undo"} = object, meta) do
75 |> UndoValidator.cast_and_validate()
76 |> Ecto.Changeset.apply_action(:insert) do
77 object = stringify_keys(object)
78 undone_object = Activity.get_by_ap_id(object["object"])
82 |> Keyword.put(:object_data, undone_object.data)
88 def validate(%{"type" => "Delete"} = object, meta) do
89 with cng <- DeleteValidator.cast_and_validate(object),
90 do_not_federate <- DeleteValidator.do_not_federate?(cng),
91 {:ok, object} <- Ecto.Changeset.apply_action(cng, :insert) do
92 object = stringify_keys(object)
93 meta = Keyword.put(meta, :do_not_federate, do_not_federate)
98 def validate(%{"type" => "Like"} = object, meta) do
101 |> LikeValidator.cast_and_validate()
102 |> Ecto.Changeset.apply_action(:insert) do
103 object = stringify_keys(object)
108 def validate(%{"type" => "ChatMessage"} = object, meta) do
109 with {:ok, object} <-
111 |> ChatMessageValidator.cast_and_validate()
112 |> Ecto.Changeset.apply_action(:insert) do
113 object = stringify_keys(object)
118 def validate(%{"type" => "Question"} = object, meta) do
119 with {:ok, object} <-
121 |> QuestionValidator.cast_and_validate()
122 |> Ecto.Changeset.apply_action(:insert) do
123 object = stringify_keys(object)
128 def validate(%{"type" => "Answer"} = object, meta) do
129 with {:ok, object} <-
131 |> AnswerValidator.cast_and_validate()
132 |> Ecto.Changeset.apply_action(:insert) do
133 object = stringify_keys(object)
138 def validate(%{"type" => "EmojiReact"} = object, meta) do
139 with {:ok, object} <-
141 |> EmojiReactValidator.cast_and_validate()
142 |> Ecto.Changeset.apply_action(:insert) do
143 object = stringify_keys(object)
149 %{"type" => "Create", "object" => %{"type" => "ChatMessage"} = object} = create_activity,
152 with {:ok, object_data} <- cast_and_apply(object),
153 meta = Keyword.put(meta, :object_data, object_data |> stringify_keys),
154 {:ok, create_activity} <-
156 |> CreateChatMessageValidator.cast_and_validate(meta)
157 |> Ecto.Changeset.apply_action(:insert) do
158 create_activity = stringify_keys(create_activity)
159 {:ok, create_activity, meta}
164 %{"type" => "Create", "object" => %{"type" => objtype} = object} = create_activity,
167 when objtype in ["Question", "Answer"] do
168 with {:ok, object_data} <- cast_and_apply(object),
169 meta = Keyword.put(meta, :object_data, object_data |> stringify_keys),
170 {:ok, create_activity} <-
172 |> CreateGenericValidator.cast_and_validate(meta)
173 |> Ecto.Changeset.apply_action(:insert) do
174 create_activity = stringify_keys(create_activity)
175 {:ok, create_activity, meta}
179 def validate(%{"type" => "Announce"} = object, meta) do
180 with {:ok, object} <-
182 |> AnnounceValidator.cast_and_validate()
183 |> Ecto.Changeset.apply_action(:insert) do
184 object = stringify_keys(object)
189 def cast_and_apply(%{"type" => "ChatMessage"} = object) do
190 ChatMessageValidator.cast_and_apply(object)
193 def cast_and_apply(%{"type" => "Question"} = object) do
194 QuestionValidator.cast_and_apply(object)
197 def cast_and_apply(%{"type" => "Answer"} = object) do
198 AnswerValidator.cast_and_apply(object)
201 def cast_and_apply(o), do: {:error, {:validator_not_set, o}}
203 # is_struct/1 isn't present in Elixir 1.8.x
204 def stringify_keys(%{__struct__: _} = object) do
210 def stringify_keys(object) when is_map(object) do
212 |> Map.new(fn {key, val} -> {to_string(key), stringify_keys(val)} end)
215 def stringify_keys(object) when is_list(object) do
217 |> Enum.map(&stringify_keys/1)
220 def stringify_keys(object), do: object
222 def fetch_actor(object) do
223 with {:ok, actor} <- ObjectValidators.ObjectID.cast(object["actor"]) do
224 User.get_or_fetch_by_ap_id(actor)
228 def fetch_actor_and_object(object) do
230 Object.normalize(object["object"], true)