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# Pleroma: A lightweight social networking server
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Object do
use Ecto.Schema
alias Pleroma.{Repo, Object, User, Activity, HTML}
import Ecto.{Query, Changeset}
schema "objects" do
field(:data, :map)
timestamps()
end
def create(data) do
Object.change(%Object{}, %{data: data})
|> Repo.insert()
end
def change(struct, params \\ %{}) do
struct
|> cast(params, [:data])
|> validate_required([:data])
|> unique_constraint(:ap_id, name: :objects_unique_apid_index)
end
def get_by_ap_id(nil), do: nil
def get_by_ap_id(ap_id) do
Repo.one(from(object in Object, where: fragment("(?)->>'id' = ?", object.data, ^ap_id)))
end
def normalize(obj) when is_map(obj), do: Object.get_by_ap_id(obj["id"])
def normalize(ap_id) when is_binary(ap_id), do: Object.get_by_ap_id(ap_id)
def normalize(_), do: nil
# Owned objects can only be mutated by their owner
def authorize_mutation(%Object{data: %{"actor" => actor}}, %User{ap_id: ap_id}),
do: actor == ap_id
# Legacy objects can be mutated by anybody
def authorize_mutation(%Object{}, %User{}), do: true
if Mix.env() == :test do
def get_cached_by_ap_id(ap_id) do
get_by_ap_id(ap_id)
end
else
def get_cached_by_ap_id(ap_id) do
key = "object:#{ap_id}"
Cachex.fetch!(:object_cache, key, fn _ ->
object = get_by_ap_id(ap_id)
if object do
{:commit, object}
else
{:ignore, object}
end
end)
end
end
def context_mapping(context) do
Object.change(%Object{}, %{data: %{"id" => context}})
end
def delete(%Object{data: %{"id" => id}} = object) do
with Repo.delete(object),
Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
{:ok, true} <- Cachex.del(:object_cache, "object:#{id}") do
{:ok, object}
end
end
def get_cached_scrubbed_html(content, scrubbers, object) do
key = "#{generate_scrubber_signature(scrubbers)}|#{object.id}"
Cachex.fetch!(:scrubber_cache, key, fn _key -> ensure_scrubbed_html(content, scrubbers) end)
end
def get_cached_stripped_html(content, object) do
get_cached_scrubbed_html(content, HtmlSanitizeEx.Scrubber.StripTags, object)
end
def ensure_scrubbed_html(
content,
scrubbers
) do
{:commit, HTML.filter_tags(content, scrubbers)}
end
defp generate_scrubber_signature(scrubber) when is_atom(scrubber) do
generate_scrubber_signature([scrubber])
end
defp generate_scrubber_signature(scrubbers) do
Enum.reduce(scrubbers, "", fn scrubber, signature ->
# If a scrubber does not have a version(e.g HtmlSanitizeEx.Scrubber) it is assumed it is always 0)
version =
if Kernel.function_exported?(scrubber, :version, 0) do
scrubber.version
else
0
end
"#{signature}#{to_string(scrubber)}#{version}"
end)
end
end
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