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101 lines
3.2 KiB
Elixir
101 lines
3.2 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.ActivityPub.ObjectValidator do
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@moduledoc """
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This module is responsible for validating an object (which can be an activity)
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and checking if it is both well formed and also compatible with our view of
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the system.
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"""
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alias Pleroma.Object
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alias Pleroma.User
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alias Pleroma.Web.ActivityPub.ObjectValidators.ChatMessageValidator
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alias Pleroma.Web.ActivityPub.ObjectValidators.CreateChatMessageValidator
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alias Pleroma.Web.ActivityPub.ObjectValidators.DeleteValidator
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alias Pleroma.Web.ActivityPub.ObjectValidators.LikeValidator
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alias Pleroma.Web.ActivityPub.ObjectValidators.Types
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@spec validate(map(), keyword()) :: {:ok, map(), keyword()} | {:error, any()}
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def validate(object, meta)
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def validate(%{"type" => "Delete"} = object, meta) do
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with cng <- DeleteValidator.cast_and_validate(object),
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do_not_federate <- DeleteValidator.do_not_federate?(cng),
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{:ok, object} <- Ecto.Changeset.apply_action(cng, :insert) do
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object = stringify_keys(object)
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meta = Keyword.put(meta, :do_not_federate, do_not_federate)
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{:ok, object, meta}
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end
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end
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def validate(%{"type" => "Like"} = object, meta) do
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with {:ok, object} <-
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object
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|> LikeValidator.cast_and_validate()
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|> Ecto.Changeset.apply_action(:insert) do
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object = stringify_keys(object)
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{:ok, object, meta}
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end
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end
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def validate(%{"type" => "ChatMessage"} = object, meta) do
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with {:ok, object} <-
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object
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|> ChatMessageValidator.cast_and_validate()
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|> Ecto.Changeset.apply_action(:insert) do
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object = stringify_keys(object)
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{:ok, object, meta}
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end
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end
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def validate(%{"type" => "Create", "object" => object} = create_activity, meta) do
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with {:ok, object_data} <- cast_and_apply(object),
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meta = Keyword.put(meta, :object_data, object_data |> stringify_keys),
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{:ok, create_activity} <-
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create_activity
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|> CreateChatMessageValidator.cast_and_validate(meta)
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|> Ecto.Changeset.apply_action(:insert) do
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create_activity = stringify_keys(create_activity)
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{:ok, create_activity, meta}
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end
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end
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def cast_and_apply(%{"type" => "ChatMessage"} = object) do
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ChatMessageValidator.cast_and_apply(object)
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end
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def cast_and_apply(o), do: {:error, {:validator_not_set, o}}
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def stringify_keys(%{__struct__: _} = object) do
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object
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|> Map.from_struct()
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|> stringify_keys
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end
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def stringify_keys(object) when is_map(object) do
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object
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|> Map.new(fn {key, val} -> {to_string(key), stringify_keys(val)} end)
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end
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def stringify_keys(object) when is_list(object) do
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object
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|> Enum.map(&stringify_keys/1)
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end
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def stringify_keys(object), do: object
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def fetch_actor(object) do
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with {:ok, actor} <- Types.ObjectID.cast(object["actor"]) do
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User.get_or_fetch_by_ap_id(actor)
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end
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end
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def fetch_actor_and_object(object) do
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fetch_actor(object)
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Object.normalize(object["object"])
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:ok
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end
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end
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