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<?php
declare(strict_types=1);
/**
* Nextcloud - Social Support
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Maxence Lange <maxence@artificial-owl.com>
* @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
* @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\Controller;
use daita\MySmallPhpTools\Traits\Nextcloud\TNCDataResponse;
use Exception;
use OC\AppFramework\Http;
use OCA\Social\AppInfo\Application;
use OCA\Social\Db\NotesRequest;
use OCA\Social\Exceptions\SignatureIsGoneException;
use OCA\Social\Exceptions\UnknownItemException;
use OCA\Social\Service\ActivityPub\FollowService;
use OCA\Social\Service\ActivityService;
use OCA\Social\Service\ActorService;
use OCA\Social\Service\ImportService;
use OCA\Social\Service\MiscService;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\Response;
use OCP\IRequest;
class ActivityPubController extends Controller {
use TNCDataResponse;
/** @var SocialPubController */
private $socialPubController;
/** @var ActivityService */
private $activityService;
/** @var ImportService */
private $importService;
/** @var FollowService */
private $followService;
/** @var ActorService */
private $actorService;
/** @var NotesRequest */
private $notesRequest;
/** @var MiscService */
private $miscService;
/**
* ActivityPubController constructor.
*
* @param IRequest $request
* @param SocialPubController $socialPubController
* @param ActivityService $activityService
* @param ImportService $importService
* @param FollowService $followService
* @param ActorService $actorService
* @param NotesRequest $notesRequest
* @param MiscService $miscService
*/
public function __construct(
IRequest $request, SocialPubController $socialPubController,
ActivityService $activityService, ImportService $importService,
FollowService $followService, ActorService $actorService, NotesRequest $notesRequest,
MiscService $miscService
) {
parent::__construct(Application::APP_NAME, $request);
$this->socialPubController = $socialPubController;
$this->activityService = $activityService;
$this->importService = $importService;
$this->followService = $followService;
$this->actorService = $actorService;
$this->notesRequest = $notesRequest;
$this->miscService = $miscService;
}
/**
* returns information about an Actor, based on the username.
*
* This method should be called when a remote ActivityPub server require information
* about a local Social account
*
* The format is pure Json
*
* @NoCSRFRequired
* @PublicPage
*
* @param string $username
*
* @return Response
*/
public function actor(string $username): Response {
if (!$this->checkSourceActivityStreams()) {
return $this->socialPubController->actor($username);
}
try {
$actor = $this->actorService->getActor($username);
// $actor->setTopLevel(true);
return $this->directSuccess($actor);
} catch (Exception $e) {
return $this->fail($e);
}
}
/**
* Alias to the actor() method.
*
* Normal path is /apps/social/users/username
* This alias is /apps/social/@username
*
* @NoCSRFRequired
* @PublicPage
*
* @param string $username
*
* @return Response
*/
public function actorAlias(string $username): Response {
return $this->actor($username);
}
/**
* Shared inbox. does nothing.
*
* @NoCSRFRequired
* @PublicPage
*
* @return Response
*/
public function sharedInbox(): Response {
try {
$this->activityService->checkRequest($this->request);
$body = file_get_contents('php://input');
$this->miscService->log('Shared Inbox: ' . $body);
$activity = $this->importService->import($body);
try {
$this->importService->parse($activity);
} catch (UnknownItemException $e) {
}
return $this->success([]);
} catch (SignatureIsGoneException $e) {
return $this->fail($e, [], Http::STATUS_GONE);
} catch (Exception $e) {
return $this->fail($e);
}
}
/**
* Method is called when a remote ActivityPub server wants to POST in the INBOX of a USER
*
* Checking that the user exists, and that the header is properly signed.
*
* Does nothing. Should save data ($body) in database.
*
* @NoCSRFRequired
* @PublicPage
*
* @param string $username
*
* @return Response
*/
public function inbox(string $username): Response {
try {
$this->activityService->checkRequest($this->request);
$body = file_get_contents('php://input');
// TODO - check the recipient <-> username
// $actor = $this->actorService->getActor($username);
$this->miscService->log('Inbox: ' . $body);
$activity = $this->importService->import($body);
try {
$this->importService->parse($activity);
} catch (UnknownItemException $e) {
}
return $this->success([]);
} catch (SignatureIsGoneException $e) {
return $this->fail($e, [], Http::STATUS_GONE);
} catch (Exception $e) {
return $this->fail($e);
}
}
/**
* Outbox. does nothing.
*
* @NoCSRFRequired
* @PublicPage
*
* @param string $username
*
* @return Response
*/
public function outbox(string $username): Response {
return $this->success([$username]);
}
/**
* followers. does nothing.
*
* @NoCSRFRequired
* @PublicPage
*
* @param string $username
*
* @return Response
*/
public function followers(string $username): Response {
if (!$this->checkSourceActivityStreams()) {
return $this->socialPubController->followers($username);
}
try {
$actor = $this->actorService->getActor($username);
$followers = $this->followService->getFollowers($actor);
// $followers->setTopLevel(true);
return $this->directSuccess($followers);
} catch (Exception $e) {
return $this->fail($e);
}
}
/**
* following. does nothing.
*
* @NoCSRFRequired
* @PublicPage
*
* @param string $username
*
* @return Response
*/
public function following(string $username): Response {
if (!$this->checkSourceActivityStreams()) {
return $this->socialPubController->following($username);
}
return $this->success([$username]);
}
/**
* should return data about a post. do nothing.
*
* @NoCSRFRequired
* @PublicPage
*
* @param string $username
* @param $postId
*
* @return Response
*/
public function displayPost($username, $postId) {
if (!$this->checkSourceActivityStreams()) {
return $this->socialPubController->displayPost($username, $postId);
}
return $this->success([$username, $postId]);
}
/**
* Check that the request comes from an ActivityPub server, based on the header.
*
* If not, should forward to a readable webpage that displays content for navigation.
*
* @return bool
*/
private function checkSourceActivityStreams(): bool {
// uncomment this line to display the result that would be return to an ActivityPub service (TEST)
// return true;
if ($this->request->getHeader('Accept')
=== 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"') {
return true;
}
return false;
}
}
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