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<?php
declare(strict_types=1);
/**
* @copyright 2018 Maxence Lange <maxence@artificial-owl.com>
* @copyright 2022 Carl Schwan <carl@carlschwan.eu>
*
* @license GNU AGPL version 3 or any later version
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Social\WellKnown;
use OCA\Social\Db\CacheActorsRequest;
use OCA\Social\Exceptions\CacheActorDoesNotExistException;
use OCA\Social\Service\CacheActorService;
use OCA\Social\Service\ConfigService;
use OCA\Social\Service\FediverseService;
use OCP\AppFramework\Http;
use OCP\Http\WellKnown\IHandler;
use OCP\Http\WellKnown\IRequestContext;
use OCP\Http\WellKnown\IResponse;
use OCP\IURLGenerator;
class WebfingerHandler implements IHandler {
private IURLGenerator $urlGenerator;
private CacheActorsRequest $cacheActorsRequest;
private CacheActorService $cacheActorService;
private FediverseService $fediverseService;
private ConfigService $configService;
public function __construct(
IURLGenerator $urlGenerator, CacheActorsRequest $cacheActorsRequest,
CacheActorService $cacheActorService, FediverseService $fediverseService,
ConfigService $configService
) {
$this->urlGenerator = $urlGenerator;
$this->cacheActorsRequest = $cacheActorsRequest;
$this->cacheActorService = $cacheActorService;
$this->fediverseService = $fediverseService;
$this->configService = $configService;
}
public function handle(string $service, IRequestContext $context, ?IResponse $previousResponse): ?IResponse {
// See https://docs.joinmastodon.org/spec/webfinger/
$this->fediverseService->jailed();
$subject = $context->getHttpRequest()->getParam('resource');
if (strpos($subject, 'acct:') === 0) {
$subject = substr($subject, 5);
}
$actor = null;
try {
$actor = $this->cacheActorService->getFromLocalAccount($subject);
} catch (CacheActorDoesNotExistException $e) {
}
if ($actor === null) {
try {
$actor = $this->cacheActorsRequest->getFromId($subject);
} catch (CacheActorDoesNotExistException $e) {
}
}
if ($actor === null || !$actor->isLocal()) {
return new JrdResponse('', Http::STATUS_NOT_FOUND);
}
// ActivityPub profile
$href = $this->configService->getSocialUrl() . '@' . $actor->getPreferredUsername();
$href = rtrim($href, '/');
$response = new JrdResponse($subject);
$response->addAlias($href);
$response->addLink('self', 'application/activity+json', $href);
// Nextcloud profile page
$profilePageUrl = $this->urlGenerator->linkToRouteAbsolute('core.ProfilePage.index', [
'targetUserId' => $actor->getPreferredUsername()
]);
$response->addAlias($profilePageUrl);
$response->addLink('http://webfinger.net/rel/profile-page', 'text/html', $profilePageUrl);
// Ostatus subscribe url
$subscribe = $this->urlGenerator->linkToRouteAbsolute('social.OStatus.subscribe') . '?uri={uri}';
$response->addLink(
'http://ostatus.org/schema/1.0/subscribe',
'',
'',
null,
null,
['template' => $subscribe]
);
return $response;
}
}
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