fix(files_trashbin): check if there is enough space before restoring

Signed-off-by: Kent Delante <kent.delante@proton.me>

Author: leftybournes

apps/files_trashbin/lib/Sabre/TrashbinPlugin.php

@@ -8,6 +8,7 @@
  */
 namespace OCA\Files_Trashbin\Sabre;
 
+use OC\Files\View;
 use OCA\DAV\Connector\Sabre\FilesPlugin;
 use OCA\Files_Trashbin\Trash\ITrashItem;
 use OCP\IPreview;
@@ -32,6 +33,7 @@ class TrashbinPlugin extends ServerPlugin {
 
 	public function __construct(
 		private IPreview $previewManager,
+		private View $view,
 	) {
 	}
 
@@ -40,6 +42,7 @@ public function initialize(Server $server) {
 
 		$this->server->on('propFind', [$this, 'propFind']);
 		$this->server->on('afterMethod:GET', [$this,'httpGet']);
+		$this->server->on('beforeMove', [$this, 'beforeMove']);
 	}
 
 
@@ -129,4 +132,40 @@ public function httpGet(RequestInterface $request, ResponseInterface $response):
 			$response->addHeader('Content-Disposition', 'attachment; filename="' . $node->getFilename() . '"');
 		}
 	}
+
+	/**
+	 * Check if a user has available space before attempting to
+	 * restore from trashbin unless they have unlimited quota.
+	 *
+	 * @param string $sourcePath
+	 * @param string $destinationPath
+	 * @return bool
+	 */
+	public function beforeMove(string $sourcePath, string $destinationPath): bool {
+		try {
+			$node = $this->server->tree->getNodeForPath($sourcePath);
+			$destinationNode = $this->server->tree->getNodeForPath(dirname($destinationPath));
+		} catch (\Exception $e) {
+			return true;
+		}
+
+		// Check if a file is being restored before proceeding
+		if (!$node instanceof ITrash || !$destinationNode instanceof RestoreFolder) {
+			return true;
+		}
+
+		$fileInfo = $node->getFileInfo();
+		if (!$fileInfo instanceof ITrashItem) {
+			return true;
+		}
+		$restoreFolder = dirname($fileInfo->getOriginalLocation());
+		$freeSpace = $this->view->free_space($restoreFolder);
+		$filesize = $fileInfo->getSize();
+		if ($freeSpace >= 0 && $freeSpace < $filesize) {
+			$this->server->httpResponse->setStatus(507);
+			return false;
+		}
+
+		return true;
+	}
 }

apps/files_trashbin/src/files_actions/restoreAction.ts

@@ -3,6 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 import { getCurrentUser } from '@nextcloud/auth'
+import { showError } from '@nextcloud/dialogs'
 import { emit } from '@nextcloud/event-bus'
 import { Permission, Node, View, FileAction } from '@nextcloud/files'
 import { t } from '@nextcloud/l10n'
@@ -52,6 +53,9 @@ export const restoreAction = new FileAction({
 			emit('files:node:deleted', node)
 			return true
 		} catch (error) {
+			if (error.response?.status === 507) {
+				showError(t('files_trashbin', 'Not enough free space to restore the file/folder'))
+			}
 			logger.error('Failed to restore node', { error, node })
 			return false
 		}

apps/files_trashbin/tests/Sabre/TrashbinPluginTest.php

@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Files_Trashbin\Tests\Sabre;
+
+use OC\Files\FileInfo;
+use OC\Files\View;
+use OCA\Files_Trashbin\Sabre\ITrash;
+use OCA\Files_Trashbin\Sabre\RestoreFolder;
+use OCA\Files_Trashbin\Sabre\TrashbinPlugin;
+use OCA\Files_Trashbin\Trash\ITrashItem;
+use OCP\IPreview;
+use Sabre\DAV\Server;
+use Sabre\DAV\Tree;
+use Test\TestCase;
+
+class TrashbinPluginTest extends TestCase {
+	private Server $server;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$tree = $this->createMock(Tree::class);
+		$this->server = new Server($tree);
+	}
+
+	/**
+	 * @dataProvider quotaProvider
+	 */
+	public function testQuota(int $quota, int $fileSize, bool $expectedResult): void {
+		$fileInfo = $this->createMock(ITrashItem::class);
+		$fileInfo->method('getSize')->willReturn($fileSize);
+		$trashNode = $this->createMock(ITrash::class);
+		$trashNode->method('getFileInfo')->willReturn($fileInfo);
+		$restoreNode = $this->createMock(RestoreFolder::class);
+		$this->server->tree->method('getNodeForPath')->willReturn($trashNode, $restoreNode);
+		$previewManager = $this->createMock(IPreview::class);
+		$view = $this->createMock(View::class);
+		$view->method('free_space')->willReturn($freeSpace);
+		$plugin = new TrashbinPlugin($previewManager, $view);
+		$plugin->initialize($this->server);
+
+		$sourcePath = 'trashbin/test/trash/file1';
+		$destinationPath = 'trashbin/test/restore/file1';
+		$this->assertEquals($expectedResult, $plugin->beforeMove($sourcePath, $destinationPath));
+	}
+
+	public function quotaProvider(): array {
+		return [
+			[ 1024, 512, true ],
+			[ 512, 513, false ],
+			[ FileInfo::SPACE_NOT_COMPUTED, 1024, true ],
+			[ FileInfo::SPACE_UNKNOWN, 1024, true ],
+			[ FileInfo::SPACE_UNLIMITED, 1024, true ]
+		];
+	}
+}