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

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

[skip ci]

apps/files_trashbin/lib/Sabre/TrashbinPlugin.php

@@ -8,8 +8,11 @@ declare(strict_types=1);
  */
 namespace OCA\Files_Trashbin\Sabre;
 
+use OC\Files\FileInfo;
+use OC\Files\View;
 use OCA\DAV\Connector\Sabre\FilesPlugin;
 use OCP\IPreview;
+use Psr\Log\LoggerInterface;
 use Sabre\DAV\INode;
 use Sabre\DAV\PropFind;
 use Sabre\DAV\Server;
@@ -42,6 +45,7 @@ class TrashbinPlugin extends ServerPlugin {
 
 		$this->server->on('propFind', [$this, 'propFind']);
 		$this->server->on('afterMethod:GET', [$this,'httpGet']);
+		$this->server->on('beforeMove', [$this, 'beforeMove']);
 	}
 
 
@@ -123,4 +127,47 @@ class TrashbinPlugin extends ServerPlugin {
 			$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);
+			$destinationNodeParent = $this->server->tree->getNodeForPath(dirname($destinationPath));
+		} catch (\Sabre\DAV\Exception $e) {
+			\OCP\Server::get(LoggerInterface::class)
+				->error($e->getMessage(), ['app' => 'files_trashbin', 'exception' => $e]);
+			return true;
+		}
+
+		// Check if a file is being restored before proceeding
+		if (!$node instanceof ITrash || !$destinationNodeParent instanceof RestoreFolder) {
+			return true;
+		}
+
+		$fileInfo = $node->getFileInfo();
+		if (!$fileInfo instanceof ITrashItem) {
+			return true;
+		}
+		$restoreFolder = dirname($fileInfo->getOriginalLocation());
+		$freeSpace = $this->view->free_space($restoreFolder);
+		if ($freeSpace === FileInfo::SPACE_NOT_COMPUTED ||
+			$freeSpace === FileInfo::SPACE_UNKNOWN ||
+			$freeSpace === FileInfo::SPACE_UNLIMITED) {
+			return true;
+		}
+		$filesize = $fileInfo->getSize();
+		if ($freeSpace < $filesize) {
+			$this->server->httpResponse->setStatus(507);
+			return false;
+		}
+
+		return true;
+	}
 }

apps/files_trashbin/tests/Sabre/TrashbinPluginTest.php

@@ -0,0 +1,67 @@
+<?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);
+		$view->method('free_space')->willReturn($quota);
+
+		$plugin = new TrashbinPlugin($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 ]
+		];
+	}
+}