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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Support\Subscription;
use OC\User\Backend;
use OCP\AppFramework\QueryException;
use OCP\IConfig;
use OCP\IGroupManager;
use OCP\IServerContainer;
use OCP\IUserManager;
use OCP\Notification\IManager;
use OCP\Support\Subscription\Exception\AlreadyRegisteredException;
use OCP\Support\Subscription\IRegistry;
use OCP\Support\Subscription\ISubscription;
use OCP\Support\Subscription\ISupportedApps;
use OCP\User\Backend\ICountMappedUsersBackend;
use OCP\User\Backend\ICountUsersBackend;
use Psr\Log\LoggerInterface;
class Registry implements IRegistry {
/** @var ISubscription */
private $subscription = null;
/** @var string */
private $subscriptionService = null;
/** @var IConfig */
private $config;
/** @var IServerContainer */
private $container;
/** @var IUserManager */
private $userManager;
/** @var IGroupManager */
private $groupManager;
/** @var LoggerInterface */
private $logger;
public function __construct(IConfig $config,
IServerContainer $container,
IUserManager $userManager,
IGroupManager $groupManager,
LoggerInterface $logger) {
$this->config = $config;
$this->container = $container;
$this->userManager = $userManager;
$this->groupManager = $groupManager;
$this->logger = $logger;
}
private function getSubscription(): ?ISubscription {
if ($this->subscription === null && $this->subscriptionService !== null) {
try {
$this->subscription = $this->container->query($this->subscriptionService);
} catch (QueryException $e) {
// Ignore this
}
}
return $this->subscription;
}
/**
* Register a subscription instance. In case it is called multiple times the
* first one is used.
*
* @param ISubscription $subscription
* @throws AlreadyRegisteredException
*
* @since 17.0.0
*/
public function register(ISubscription $subscription): void {
if ($this->subscription !== null || $this->subscriptionService !== null) {
throw new AlreadyRegisteredException();
}
$this->subscription = $subscription;
}
public function registerService(string $subscriptionService): void {
if ($this->subscription !== null || $this->subscriptionService !== null) {
throw new AlreadyRegisteredException();
}
$this->subscriptionService = $subscriptionService;
}
/**
* Fetches the list of app IDs that are supported by the subscription
*
* @since 17.0.0
*/
public function delegateGetSupportedApps(): array {
if ($this->getSubscription() instanceof ISupportedApps) {
return $this->getSubscription()->getSupportedApps();
}
return [];
}
/**
* Indicates if a valid subscription is available
*
* @since 17.0.0
*/
public function delegateHasValidSubscription(): bool {
// Allow overwriting this manually for environments where the subscription information cannot be fetched
if ($this->config->getSystemValueBool('has_valid_subscription')) {
return true;
}
if ($this->getSubscription() instanceof ISubscription) {
return $this->getSubscription()->hasValidSubscription();
}
return false;
}
/**
* Indicates if the subscription has extended support
*
* @since 17.0.0
*/
public function delegateHasExtendedSupport(): bool {
if ($this->getSubscription() instanceof ISubscription) {
return $this->getSubscription()->hasExtendedSupport();
}
return false;
}
/**
* Indicates if a hard user limit is reached and no new users should be created
*
* @param IManager|null $notificationManager
* @since 21.0.0
*/
public function delegateIsHardUserLimitReached(?IManager $notificationManager = null): bool {
$subscription = $this->getSubscription();
if ($subscription instanceof ISubscription &&
$subscription->hasValidSubscription()) {
$userLimitReached = $subscription->isHardUserLimitReached();
if ($userLimitReached && $notificationManager instanceof IManager) {
$this->notifyAboutReachedUserLimit($notificationManager);
}
return $userLimitReached;
}
$isOneClickInstance = $this->config->getSystemValueBool('one-click-instance', false);
if (!$isOneClickInstance) {
return false;
}
$userCount = $this->getUserCount();
$hardUserLimit = $this->config->getSystemValueInt('one-click-instance.user-limit', 50);
$userLimitReached = $userCount >= $hardUserLimit;
if ($userLimitReached && $notificationManager instanceof IManager) {
$this->notifyAboutReachedUserLimit($notificationManager);
}
return $userLimitReached;
}
private function getUserCount(): int {
$userCount = 0;
$backends = $this->userManager->getBackends();
foreach ($backends as $backend) {
if ($backend instanceof ICountMappedUsersBackend) {
$userCount += $backend->countMappedUsers();
} elseif ($backend->implementsActions(Backend::COUNT_USERS)) {
/** @var ICountUsersBackend $backend */
$backendUsers = $backend->countUsers();
if ($backendUsers !== false) {
$userCount += $backendUsers;
} else {
// TODO what if the user count can't be determined?
$this->logger->warning('Can not determine user count for ' . get_class($backend), ['app' => 'lib']);
}
}
}
$disabledUsers = $this->config->getUsersForUserValue('core', 'enabled', 'false');
$disabledUsersCount = count($disabledUsers);
$userCount = $userCount - $disabledUsersCount;
if ($userCount < 0) {
$userCount = 0;
// this should never happen
$this->logger->warning("Total user count was negative (users: $userCount, disabled: $disabledUsersCount)", ['app' => 'lib']);
}
return $userCount;
}
private function notifyAboutReachedUserLimit(IManager $notificationManager): void {
$admins = $this->groupManager->get('admin')->getUsers();
$notification = $notificationManager->createNotification();
$notification->setApp('core')
->setObject('user_limit_reached', '1')
->setSubject('user_limit_reached');
if ($notificationManager->getCount($notification) > 0
&& !$this->reIssue()
) {
return;
}
$notificationManager->markProcessed($notification);
$notification->setDateTime(new \DateTime());
foreach ($admins as $admin) {
$notification->setUser($admin->getUID());
$notificationManager->notify($notification);
}
$this->logger->warning('The account limit was reached and the new account was not created', ['app' => 'lib']);
}
protected function reIssue(): bool {
$lastNotification = (int)$this->config->getAppValue('lib', 'last_subscription_reminder', '0');
if ((time() - $lastNotification) >= 86400) {
$this->config->setAppValue('lib', 'last_subscription_reminder', (string)time());
return true;
}
return false;
}
}
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