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Merge pull request #47896 from nextcloud/fix/resiliant-user-removal
fix: Make user removal more resilient
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30 changes: 30 additions & 0 deletions
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lib/private/Repair/AddCleanupDeletedUsersBackgroundJob.php
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| <?php | ||
|
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| declare(strict_types=1); | ||
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| /** | ||
| * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors | ||
| * SPDX-License-Identifier: AGPL-3.0-or-later | ||
| */ | ||
| namespace OC\Repair; | ||
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| use OC\User\BackgroundJobs\CleanupDeletedUsers; | ||
| use OCP\BackgroundJob\IJobList; | ||
| use OCP\Migration\IOutput; | ||
| use OCP\Migration\IRepairStep; | ||
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| class AddCleanupDeletedUsersBackgroundJob implements IRepairStep { | ||
| private IJobList $jobList; | ||
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| public function __construct(IJobList $jobList) { | ||
| $this->jobList = $jobList; | ||
| } | ||
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| public function getName(): string { | ||
| return 'Add cleanup-deleted-users background job'; | ||
| } | ||
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| public function run(IOutput $output) { | ||
| $this->jobList->add(CleanupDeletedUsers::class); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| <?php | ||
|
|
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| declare(strict_types=1); | ||
|
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| /** | ||
| * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors | ||
| * SPDX-License-Identifier: AGPL-3.0-or-later | ||
| */ | ||
| namespace OC\User\BackgroundJobs; | ||
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| use OC\User\Manager; | ||
| use OC\User\PartiallyDeletedUsersBackend; | ||
| use OC\User\User; | ||
| use OCP\AppFramework\Utility\ITimeFactory; | ||
| use OCP\BackgroundJob\IJob; | ||
| use OCP\BackgroundJob\TimedJob; | ||
| use OCP\EventDispatcher\IEventDispatcher; | ||
| use OCP\IConfig; | ||
| use Psr\Log\LoggerInterface; | ||
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| class CleanupDeletedUsers extends TimedJob { | ||
| public function __construct( | ||
| ITimeFactory $time, | ||
| private Manager $userManager, | ||
| private IConfig $config, | ||
| private LoggerInterface $logger, | ||
| ) { | ||
| parent::__construct($time); | ||
| $this->setTimeSensitivity(IJob::TIME_INSENSITIVE); | ||
| $this->setInterval(24 * 3600); | ||
| } | ||
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| protected function run($argument): void { | ||
| $backend = new PartiallyDeletedUsersBackend($this->config); | ||
| $users = $backend->getUsers(); | ||
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| if (empty($users)) { | ||
| $this->logger->debug('No failed deleted users found.'); | ||
| return; | ||
| } | ||
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| foreach ($users as $userId) { | ||
| if ($this->userManager->userExists($userId)) { | ||
| $this->logger->info('Skipping user {userId}, marked as deleted, as they still exists in user backend.', ['userId' => $userId]); | ||
| $backend->unmarkUser($userId); | ||
| continue; | ||
| } | ||
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| try { | ||
| $user = new User( | ||
| $userId, | ||
| $backend, | ||
| \OCP\Server::get(IEventDispatcher::class), | ||
| $this->userManager, | ||
| $this->config, | ||
| ); | ||
| $user->delete(); | ||
| $this->logger->info('Cleaned up deleted user {userId}', ['userId' => $userId]); | ||
| } catch (\Throwable $error) { | ||
| $this->logger->warning('Could not cleanup deleted user {userId}', ['userId' => $userId, 'exception' => $error]); | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| <?php | ||
|
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| /** | ||
| * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors | ||
| * SPDX-License-Identifier: AGPL-3.0-or-later | ||
| */ | ||
| namespace OC\User; | ||
|
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| use OCP\IConfig; | ||
| use OCP\IUserBackend; | ||
| use OCP\User\Backend\IGetHomeBackend; | ||
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| /** | ||
| * This is a "fake" backend for users that were deleted, | ||
| * but not properly removed from Nextcloud (e.g. an exception occurred). | ||
| * This backend is only needed because some APIs in user-deleted-events require a "real" user with backend. | ||
| */ | ||
| class PartiallyDeletedUsersBackend extends Backend implements IGetHomeBackend, IUserBackend { | ||
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| public function __construct( | ||
| private IConfig $config, | ||
| ) { | ||
| } | ||
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| public function deleteUser($uid): bool { | ||
| // fake true, deleting failed users is automatically handled by User::delete() | ||
| return true; | ||
| } | ||
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| public function getBackendName(): string { | ||
| return 'deleted users'; | ||
| } | ||
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| public function userExists($uid) { | ||
| return $this->config->getUserValue($uid, 'core', 'deleted') === 'true'; | ||
| } | ||
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| public function getHome(string $uid): string|false { | ||
| return $this->config->getUserValue($uid, 'core', 'deleted.home-path') ?: false; | ||
| } | ||
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| public function getUsers($search = '', $limit = null, $offset = null) { | ||
| return $this->config->getUsersForUserValue('core', 'deleted', 'true'); | ||
| } | ||
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| /** | ||
| * Unmark a user as deleted. | ||
| * This typically the case if the user deletion failed in the backend but before the backend deleted the user, | ||
| * meaning the user still exists so we unmark them as it still can be accessed (and deleted) normally. | ||
| */ | ||
| public function unmarkUser(string $userId): void { | ||
| $this->config->deleteUserValue($userId, 'core', 'deleted'); | ||
| $this->config->deleteUserValue($userId, 'core', 'deleted.home-path'); | ||
| } | ||
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| } |
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