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.AcceptRejectValidator
17 alias Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator
18 alias Pleroma.Web.ActivityPub.ObjectValidators.AnswerValidator
19 alias Pleroma.Web.ActivityPub.ObjectValidators.AudioValidator
20 alias Pleroma.Web.ActivityPub.ObjectValidators.BlockValidator
21 alias Pleroma.Web.ActivityPub.ObjectValidators.ChatMessageValidator
22 alias Pleroma.Web.ActivityPub.ObjectValidators.CreateChatMessageValidator
23 alias Pleroma.Web.ActivityPub.ObjectValidators.CreateGenericValidator
24 alias Pleroma.Web.ActivityPub.ObjectValidators.DeleteValidator
25 alias Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator
26 alias Pleroma.Web.ActivityPub.ObjectValidators.FollowValidator
27 alias Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator
28 alias Pleroma.Web.ActivityPub.ObjectValidators.QuestionValidator
29 alias Pleroma.Web.ActivityPub.ObjectValidators.UndoValidator
30 alias Pleroma.Web.ActivityPub.ObjectValidators.UpdateValidator
32 @spec validate(map(), keyword()) :: {:ok, map(), keyword()} | {:error, any()}
33 def validate(object, meta)
35 def validate(%{"type" => type} = object, meta)
36 when type in ~w[Accept Reject] do
39 |> AcceptRejectValidator.cast_and_validate()
40 |> Ecto.Changeset.apply_action(:insert) do
41 object = stringify_keys(object)
46 def validate(%{"type" => "Follow"} = object, meta) do
49 |> FollowValidator.cast_and_validate()
50 |> Ecto.Changeset.apply_action(:insert) do
51 object = stringify_keys(object)
56 def validate(%{"type" => "Block"} = block_activity, meta) do
57 with {:ok, block_activity} <-
59 |> BlockValidator.cast_and_validate()
60 |> Ecto.Changeset.apply_action(:insert) do
61 block_activity = stringify_keys(block_activity)
62 outgoing_blocks = Pleroma.Config.get([:activitypub, :outgoing_blocks])
65 if !outgoing_blocks do
66 Keyword.put(meta, :do_not_federate, true)
71 {:ok, block_activity, meta}
75 def validate(%{"type" => "Update"} = update_activity, meta) do
76 with {:ok, update_activity} <-
78 |> UpdateValidator.cast_and_validate()
79 |> Ecto.Changeset.apply_action(:insert) do
80 update_activity = stringify_keys(update_activity)
81 {:ok, update_activity, meta}
85 def validate(%{"type" => "Undo"} = object, meta) do
88 |> UndoValidator.cast_and_validate()
89 |> Ecto.Changeset.apply_action(:insert) do
90 object = stringify_keys(object)
91 undone_object = Activity.get_by_ap_id(object["object"])
95 |> Keyword.put(:object_data, undone_object.data)
101 def validate(%{"type" => "Delete"} = object, meta) do
102 with cng <- DeleteValidator.cast_and_validate(object),
103 do_not_federate <- DeleteValidator.do_not_federate?(cng),
104 {:ok, object} <- Ecto.Changeset.apply_action(cng, :insert) do
105 object = stringify_keys(object)
106 meta = Keyword.put(meta, :do_not_federate, do_not_federate)
111 def validate(%{"type" => "Like"} = object, meta) do
112 with {:ok, object} <-
114 |> LikeValidator.cast_and_validate()
115 |> Ecto.Changeset.apply_action(:insert) do
116 object = stringify_keys(object)
121 def validate(%{"type" => "ChatMessage"} = object, meta) do
122 with {:ok, object} <-
124 |> ChatMessageValidator.cast_and_validate()
125 |> Ecto.Changeset.apply_action(:insert) do
126 object = stringify_keys(object)
131 def validate(%{"type" => "Question"} = object, meta) do
132 with {:ok, object} <-
134 |> QuestionValidator.cast_and_validate()
135 |> Ecto.Changeset.apply_action(:insert) do
136 object = stringify_keys(object)
141 def validate(%{"type" => "Audio"} = object, meta) do
142 with {:ok, object} <-
144 |> AudioValidator.cast_and_validate()
145 |> Ecto.Changeset.apply_action(:insert) do
146 object = stringify_keys(object)
151 def validate(%{"type" => "Answer"} = object, meta) do
152 with {:ok, object} <-
154 |> AnswerValidator.cast_and_validate()
155 |> Ecto.Changeset.apply_action(:insert) do
156 object = stringify_keys(object)
161 def validate(%{"type" => "EmojiReact"} = object, meta) do
162 with {:ok, object} <-
164 |> EmojiReactValidator.cast_and_validate()
165 |> Ecto.Changeset.apply_action(:insert) do
166 object = stringify_keys(object)
172 %{"type" => "Create", "object" => %{"type" => "ChatMessage"} = object} = create_activity,
175 with {:ok, object_data} <- cast_and_apply(object),
176 meta = Keyword.put(meta, :object_data, object_data |> stringify_keys),
177 {:ok, create_activity} <-
179 |> CreateChatMessageValidator.cast_and_validate(meta)
180 |> Ecto.Changeset.apply_action(:insert) do
181 create_activity = stringify_keys(create_activity)
182 {:ok, create_activity, meta}
187 %{"type" => "Create", "object" => %{"type" => objtype} = object} = create_activity,
190 when objtype in ~w[Question Answer Audio] do
191 with {:ok, object_data} <- cast_and_apply(object),
192 meta = Keyword.put(meta, :object_data, object_data |> stringify_keys),
193 {:ok, create_activity} <-
195 |> CreateGenericValidator.cast_and_validate(meta)
196 |> Ecto.Changeset.apply_action(:insert) do
197 create_activity = stringify_keys(create_activity)
198 {:ok, create_activity, meta}
202 def validate(%{"type" => "Announce"} = object, meta) do
203 with {:ok, object} <-
205 |> AnnounceValidator.cast_and_validate()
206 |> Ecto.Changeset.apply_action(:insert) do
207 object = stringify_keys(object)
212 def cast_and_apply(%{"type" => "ChatMessage"} = object) do
213 ChatMessageValidator.cast_and_apply(object)
216 def cast_and_apply(%{"type" => "Question"} = object) do
217 QuestionValidator.cast_and_apply(object)
220 def cast_and_apply(%{"type" => "Answer"} = object) do
221 AnswerValidator.cast_and_apply(object)
224 def cast_and_apply(%{"type" => "Audio"} = object) do
225 AudioValidator.cast_and_apply(object)
228 def cast_and_apply(o), do: {:error, {:validator_not_set, o}}
230 # is_struct/1 isn't present in Elixir 1.8.x
231 def stringify_keys(%{__struct__: _} = object) do
237 def stringify_keys(object) when is_map(object) do
239 |> Map.new(fn {key, val} -> {to_string(key), stringify_keys(val)} end)
242 def stringify_keys(object) when is_list(object) do
244 |> Enum.map(&stringify_keys/1)
247 def stringify_keys(object), do: object
249 def fetch_actor(object) do
250 with {:ok, actor} <- ObjectValidators.ObjectID.cast(object["actor"]) do
251 User.get_or_fetch_by_ap_id(actor)
255 def fetch_actor_and_object(object) do
257 Object.normalize(object["object"], true)