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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2020, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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 OC\Push;
use OCP\AppFramework\QueryException;
use OCP\ILogger;
use OCP\IServerContainer;
use OCP\Push\IManager;
use OCP\Push\IPushApp;
use OCP\Push\IValidateAccess;
class Manager implements IPushApp {
/** @var array */
private $validatorClasses = [];
/** @var string */
private $pushClass;
/** @var IPushApp */
private $push;
/** @var IServerContainer */
private $container;
/** @var ILogger */
private $logger;
public function __construct(IServerContainer $container, ILogger $logger) {
$this->container = $container;
$this->logger = $logger;
}
public function registerAccessValidator(string $appId, string $service): void {
$this->logger->debug('Adding access validator "' . $service . '" for app: '. $appId, ['app' => 'internal_push']);
$this->validatorClasses[$appId] = $service;
}
public function registerPushApp(string $service): void {
$this->logger->debug('Registering push app "' . $service, ['app' => 'internal_push']);
$this->pushClass = $service;
}
public function isAvailable(): bool {
return $this->getPushApp()->isAvailable();
}
public function push(string $appId, string $topic, \JsonSerializable $payload): void {
$this->getPushApp()->push($appId, $topic, $payload);
}
public function generateJWT(string $appId, string $topic): string {
return $this->getPushApp()->generateJWT($appId, $topic);
}
public function validateAccess(string $userId, string $appId, string $topic): bool {
if (!isset($this->validatorClasses[$appId])) {
$this->logger->debug('No validator found for ' . $appId, ['app' => 'internal_push']);
return false;
}
try {
$validator = $this->container->query($this->validatorClasses[$appId]);
} catch (QueryException $e) {
$this->logger->debug('Could not query ' . $appId, ['app' => 'internal_push']);
return false;
}
if (!($validator instanceof IValidateAccess)) {
$this->logger->debug($this->validatorClasses[$appId] . ' is not an instance of ' . IValidateAccess::class, ['app' => 'internal_push']);
return false;
}
try {
return $validator->hasAccess($topic, $userId);
} catch (\Throwable $e) {
$this->logger->logException($e, ['app' => 'internal_push']);
return false;
}
}
public function getEndpoint(string $appId, string $topic): string {
return $this->getPushApp()->getEndpoint($appId, $topic);
}
private function getPushApp(): IPushApp {
if ($this->push !== null) {
return $this->push;
}
$push = new VoidPushApp();
if ($this->pushClass !== null) {
try {
$query = $this->container->query($this->pushClass);
if ($query instanceof IPushApp) {
$push = $query;
} else {
$this->logger->debug($this->pushClass . ' is not and instance of ' . IPushApp::class, ['app' => 'internal_push']);
}
} catch (QueryException $e) {
$this->logger->debug('Could not query ' . $this->pushClass, ['app' => 'internal_push']);
}
}
$this->push = $push;
return $push;
}
}
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