UndoValidator: Add UndoValidator.

This commit is contained in:
lain 2020-05-05 14:17:47 +02:00
parent 8b2457bdbf
commit f1da8882f9
5 changed files with 127 additions and 1 deletions

View file

@ -10,6 +10,19 @@ defmodule Pleroma.Web.ActivityPub.Builder do
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.ActivityPub.Visibility
@spec undo(User.t(), Activity.t()) :: {:ok, map(), keyword()}
def undo(actor, object) do
{:ok,
%{
"id" => Utils.generate_activity_id(),
"actor" => actor.ap_id,
"type" => "Undo",
"object" => object.data["id"],
"to" => object.data["to"] || [],
"cc" => object.data["cc"] || []
}, []}
end
@spec like(User.t(), Object.t()) :: {:ok, map(), keyword()}
def like(actor, object) do
object_actor = User.get_cached_by_ap_id(object.data["actor"])

View file

@ -12,10 +12,19 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidator do
alias Pleroma.Object
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator
alias Pleroma.Web.ActivityPub.ObjectValidators.UndoValidator
@spec validate(map(), keyword()) :: {:ok, map(), keyword()} | {:error, any()}
def validate(object, meta)
def validate(%{"type" => "Undo"} = object, meta) do
with {:ok, object} <-
object |> UndoValidator.cast_and_validate() |> Ecto.Changeset.apply_action(:insert) do
object = stringify_keys(object |> Map.from_struct())
{:ok, object, meta}
end
end
def validate(%{"type" => "Like"} = object, meta) do
with {:ok, object} <-
object |> LikeValidator.cast_and_validate() |> Ecto.Changeset.apply_action(:insert) do

View file

@ -5,6 +5,7 @@
defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations do
import Ecto.Changeset
alias Pleroma.Activity
alias Pleroma.Object
alias Pleroma.User
@ -22,7 +23,7 @@ def validate_actor_presence(cng, field_name \\ :actor) do
def validate_object_presence(cng, field_name \\ :object) do
cng
|> validate_change(field_name, fn field_name, object ->
if Object.get_cached_by_ap_id(object) do
if Object.get_cached_by_ap_id(object) || Activity.get_by_ap_id(object) do
[]
else
[{field_name, "can't find object"}]

View file

@ -0,0 +1,62 @@
# 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.UndoValidator do
use Ecto.Schema
alias Pleroma.Activity
alias Pleroma.Web.ActivityPub.ObjectValidators.Types
import Ecto.Changeset
import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
@primary_key false
embedded_schema do
field(:id, Types.ObjectID, primary_key: true)
field(:type, :string)
field(:object, Types.ObjectID)
field(:actor, Types.ObjectID)
field(:to, {:array, :string}, default: [])
field(:cc, {:array, :string}, default: [])
end
def cast_and_validate(data) do
data
|> cast_data()
|> validate_data()
end
def cast_data(data) do
%__MODULE__{}
|> changeset(data)
end
def changeset(struct, data) do
struct
|> cast(data, __schema__(:fields))
end
def validate_data(data_cng) do
data_cng
|> validate_inclusion(:type, ["Undo"])
|> validate_required([:id, :type, :object, :actor, :to, :cc])
|> validate_actor_presence()
|> validate_object_presence()
|> validate_undo_rights()
end
def validate_undo_rights(cng) do
actor = get_field(cng, :actor)
object = get_field(cng, :object)
with %Activity{data: %{"actor" => object_actor}} <- Activity.get_by_ap_id(object),
true <- object_actor != actor do
cng
|> add_error(:actor, "not the same as object actor")
else
_ -> cng
end
end
end

View file

@ -1,6 +1,7 @@
defmodule Pleroma.Web.ActivityPub.ObjectValidatorTest do
use Pleroma.DataCase
alias Pleroma.Web.ActivityPub.Builder
alias Pleroma.Web.ActivityPub.ObjectValidator
alias Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator
alias Pleroma.Web.ActivityPub.Utils
@ -8,6 +9,46 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidatorTest do
import Pleroma.Factory
describe "Undos" do
setup do
user = insert(:user)
{:ok, post_activity} = CommonAPI.post(user, %{"status" => "uguu"})
{:ok, like} = CommonAPI.favorite(user, post_activity.id)
{:ok, valid_like_undo, []} = Builder.undo(user, like)
%{user: user, like: like, valid_like_undo: valid_like_undo}
end
test "it validates a basic like undo", %{valid_like_undo: valid_like_undo} do
assert {:ok, _, _} = ObjectValidator.validate(valid_like_undo, [])
end
test "it does not validate if the actor of the undo is not the actor of the object", %{
valid_like_undo: valid_like_undo
} do
other_user = insert(:user, ap_id: "https://gensokyo.2hu/users/raymoo")
bad_actor =
valid_like_undo
|> Map.put("actor", other_user.ap_id)
{:error, cng} = ObjectValidator.validate(bad_actor, [])
assert {:actor, {"not the same as object actor", []}} in cng.errors
end
test "it does not validate if the object is missing", %{valid_like_undo: valid_like_undo} do
missing_object =
valid_like_undo
|> Map.put("object", "https://gensokyo.2hu/objects/1")
{:error, cng} = ObjectValidator.validate(missing_object, [])
assert {:object, {"can't find object", []}} in cng.errors
assert length(cng.errors) == 1
end
end
describe "likes" do
setup do
user = insert(:user)