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| 1 | +<?php |
| 2 | + |
| 3 | +declare(strict_types=1); |
| 4 | +/** |
| 5 | + * @copyright Copyright (c) 2021 Robin Appelman <robin@icewind.nl> |
| 6 | + * |
| 7 | + * @license GNU AGPL version 3 or any later version |
| 8 | + * |
| 9 | + * This program is free software: you can redistribute it and/or modify |
| 10 | + * it under the terms of the GNU Affero General Public License as |
| 11 | + * published by the Free Software Foundation, either version 3 of the |
| 12 | + * License, or (at your option) any later version. |
| 13 | + * |
| 14 | + * This program is distributed in the hope that it will be useful, |
| 15 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | + * GNU Affero General Public License for more details. |
| 18 | + * |
| 19 | + * You should have received a copy of the GNU Affero General Public License |
| 20 | + * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | + * |
| 22 | + */ |
| 23 | + |
| 24 | +namespace OC\Authentication\Listeners; |
| 25 | + |
| 26 | +use OC\Files\Cache\Cache; |
| 27 | +use OCP\EventDispatcher\Event; |
| 28 | +use OCP\EventDispatcher\IEventListener; |
| 29 | +use OCP\Files\Config\IMountProviderCollection; |
| 30 | +use OCP\Files\Storage\IStorage; |
| 31 | +use OCP\User\Events\BeforeUserDeletedEvent; |
| 32 | +use OCP\User\Events\UserDeletedEvent; |
| 33 | + |
| 34 | +class UserDeletedFilesCleanupListener implements IEventListener { |
| 35 | + /** @var array<string,IStorage> */ |
| 36 | + private $homeStorageCache = []; |
| 37 | + |
| 38 | + /** @var IMountProviderCollection */ |
| 39 | + private $mountProviderCollection; |
| 40 | + |
| 41 | + public function __construct(IMountProviderCollection $mountProviderCollection) { |
| 42 | + $this->mountProviderCollection = $mountProviderCollection; |
| 43 | + } |
| 44 | + |
| 45 | + public function handle(Event $event): void { |
| 46 | + // since we can't reliably get the user home storage after the user is deleted |
| 47 | + // but the user deletion might get canceled during the before event |
| 48 | + // we only cache the user home storage during the before event and then do the |
| 49 | + // action deletion during the after event |
| 50 | + |
| 51 | + if ($event instanceof BeforeUserDeletedEvent) { |
| 52 | + $userHome = $this->mountProviderCollection->getHomeMountForUser($event->getUser()); |
| 53 | + $storage = $userHome->getStorage(); |
| 54 | + if (!$storage) { |
| 55 | + throw new \Exception("User has no home storage"); |
| 56 | + } |
| 57 | + $this->homeStorageCache[$event->getUser()->getUID()] = $storage; |
| 58 | + } |
| 59 | + if ($event instanceof UserDeletedEvent) { |
| 60 | + if (!isset($this->homeStorageCache[$event->getUser()->getUID()])) { |
| 61 | + throw new \Exception("UserDeletedEvent fired without matching BeforeUserDeletedEvent"); |
| 62 | + } |
| 63 | + $storage = $this->homeStorageCache[$event->getUser()->getUID()]; |
| 64 | + $cache = $storage->getCache(); |
| 65 | + if ($cache instanceof Cache) { |
| 66 | + $cache->clear(); |
| 67 | + } else { |
| 68 | + throw new \Exception("Home storage has invalid cache"); |
| 69 | + } |
| 70 | + $storage->rmdir(''); |
| 71 | + } |
| 72 | + } |
| 73 | +} |
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