gnu-social/components/Subscription/Controller/Subscribers.php

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<?php
declare(strict_types = 1);
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
namespace Component\Subscription\Controller;
use App\Core\DB;
use App\Core\Form;
use function App\Core\I18n\_m;
use App\Core\Log;
use App\Core\Router;
use App\Entity\Actor;
use App\Util\Common;
use App\Util\Exception\ClientException;
use App\Util\Exception\RedirectException;
use App\Util\Exception\ServerException;
use Component\Collection\Util\Controller\CircleController;
use Component\Subscription\Subscription as SubscriptionComponent;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\HttpFoundation\Request;
/**
* Collection of an actor's subscribers
*/
class Subscribers extends CircleController
{
/**
* @throws ServerException
*/
public function subscribersByActor(Request $request, Actor $actor): array
{
return [
'_template' => 'collection/actors.html.twig',
'title' => _m('Subscribers'),
'empty_message' => _m('No subscribers.'),
'sort_form_fields' => [],
'page' => $this->int('page') ?? 1,
'actors' => $actor->getSubscribers(),
];
}
/**
* @throws ClientException
* @throws ServerException
*/
public function subscribersByActorId(Request $request, int $id): array
{
$actor = Actor::getById($id);
if (\is_null($actor)) {
throw new ClientException(_m('No such actor.'), 404);
}
return $this->subscribersByActor($request, $actor);
}
/**
* @throws \App\Util\Exception\DuplicateFoundException
* @throws \App\Util\Exception\NoLoggedInUser
* @throws \App\Util\Exception\NotFoundException
* @throws \App\Util\Exception\ServerException
* @throws ClientException
* @throws RedirectException
*/
public function subscribersAdd(Request $request, int $object_id): array
{
$subject = Common::ensureLoggedIn();
$object = Actor::getById($object_id);
$form = Form::create(
[
['subscriber_add', SubmitType::class, ['label' => _m('Subscribe!')]],
],
);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
if (!\is_null(SubscriptionComponent::subscribe($subject, $object))) {
DB::flush();
SubscriptionComponent::refreshSubscriptionCount($subject, $object);
}
// Redirect user to where they came from
// Prevent open redirect
if (!\is_null($from = $this->string('from'))) {
if (Router::isAbsolute($from)) {
Log::warning("Actor {$object_id} attempted to reply to a note and then get redirected to another host, or the URL was invalid ({$from})");
throw new ClientException(_m('Can not redirect to outside the website from here'), 400); // 400 Bad request (deceptive)
}
// TODO anchor on element id
throw new RedirectException(url: $from);
}
// If we don't have a URL to return to, go to the instance root
throw new RedirectException('root');
}
return [
'_template' => 'subscription/add_subscriber.html.twig',
'form' => $form->createView(),
'object' => $object,
];
}
/**
* @throws \App\Util\Exception\DuplicateFoundException
* @throws \App\Util\Exception\NoLoggedInUser
* @throws \App\Util\Exception\NotFoundException
* @throws \App\Util\Exception\ServerException
* @throws ClientException
* @throws RedirectException
*/
public function subscribersRemove(Request $request, int $object_id): array
{
$subject = Common::ensureLoggedIn();
$object = Actor::getById($object_id);
$form = Form::create(
[
['subscriber_remove', SubmitType::class, ['label' => _m('Unsubscribe')]],
],
);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
if (!\is_null(SubscriptionComponent::unsubscribe($subject, $object))) {
DB::flush();
SubscriptionComponent::refreshSubscriptionCount($subject, $object);
}
// Redirect user to where they came from
// Prevent open redirect
if (!\is_null($from = $this->string('from'))) {
if (Router::isAbsolute($from)) {
Log::warning("Actor {$object_id} attempted to subscribe an actor and then get redirected to another host, or the URL was invalid ({$from})");
throw new ClientException(_m('Can not redirect to outside the website from here'), 400); // 400 Bad request (deceptive)
}
// TODO anchor on element id
throw new RedirectException(url: $from);
}
// If we don't have a URL to return to, go to the instance root
throw new RedirectException('root');
}
return [
'_template' => 'subscription/remove_subscriber.html.twig',
'form' => $form->createView(),
'object' => $object,
];
}
}