Exclude file name patterns; ignore gentoo webapp files

lib/private/IntegrityCheck/Iterator/ExcludeFileByNameFilterIterator.php

@@ -26,7 +26,7 @@
 
 /**
  * Class ExcludeFileByNameFilterIterator provides a custom iterator which excludes
- * entries with the specified file name from the file list.
+ * entries with the specified file name from the file list. These file names are matched exactly.
  *
  * @package OC\Integritycheck\Iterator
  */
@@ -42,21 +42,42 @@ class ExcludeFileByNameFilterIterator extends \RecursiveFilterIterator {
 		'.DS_Store', // Mac OS X
 		'Thumbs.db', // Microsoft Windows
 		'.directory', // Dolphin (KDE)
-		'.webapp', // Gentoo/Funtoo & derivatives use a tool known as webapp-config to manager wep-apps.
+		'.webapp', // Gentoo/Funtoo & derivatives use a tool known as webapp-config to manage web-apps.
 	];
 
+	/**
+	 * Array of excluded file name parts. Those are not scanned by the integrity checker.
+	 * These strings are regular expressions and any file names
+	 * matching these expressions are ignored.
+	 *
+	 * @var array
+	 */
+	private $excludedFilenamePatterns = [
+		'/^\.webapp-nextcloud-(\d+\.){2}(\d+)(-r\d+)?$/', // Gentoo/Funtoo & derivatives use a tool known as webapp-config to manage wep-apps.
+ 	];
+
 	/**
 	 * @return bool
 	 */
 	public function accept() {
-		if($this->isDir()) {
+		/** @var \SplFileInfo $current */
+		$current = $this->current();
+
+		if ($current->isDir()) {
 			return true;
 		}
 
-		return !\in_array(
-			$this->current()->getFilename(),
-			$this->excludedFilenames,
-			true
-		);
+		$currentFileName = $current->getFilename();
+		if (in_array($currentFileName, $this->excludedFilenames, true)){
+			return false;
+		}
+
+		foreach ($this->excludedFilenamePatterns as $pattern){
+			if (preg_match($pattern, $currentFileName) > 0){
+				return false;
+			}
+		}
+
+		return true;
 	}
 }

tests/lib/IntegrityCheck/Iterator/ExcludeFileByNameFilterIteratorTest.php

@@ -0,0 +1,94 @@
+<?php
+/**
+ * @author Victor Dubiniuk <dubiniuk@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace Test\IntegrityCheck\Iterator;
+
+use \OC\IntegrityCheck\Iterator\ExcludeFileByNameFilterIterator;
+use Test\TestCase;
+
+class ExcludeFileByNameFilterIteratorTest extends TestCase {
+	/** @var ExcludeFileByNameFilterIterator|\PHPUnit\Framework\MockObject\MockObject */
+	protected $filter;
+
+	public function setUp() {
+		parent::setUp();
+		$this->filter = $this->getMockBuilder(ExcludeFileByNameFilterIterator::class)
+			->disableOriginalConstructor()
+			->setMethods(['current'])
+			->getMock();
+	}
+
+	public function fileNameProvider(): array {
+		return [
+			['a file', true],
+			['Thumbs.db', false],
+			['another file', true],
+			['.directory', false],
+			['.webapp-nextcloud-15.0.2', false],
+			['.webapp-nextcloud-14.0.5-r3', false],
+			['wx.webapp-nextcloud-obee', true],
+		];
+	}
+
+	/**
+	 * @dataProvider fileNameProvider
+	 * @param string $fileName
+	 * @param bool $expectedResult
+	 */
+	public function testAcceptForFiles($fileName, $expectedResult): void {
+		$iteratorMock = $this->getMockBuilder(\RecursiveDirectoryIterator::class)
+			->disableOriginalConstructor()
+			->setMethods(['getFilename', 'isDir'])
+			->getMock();
+
+		$iteratorMock->method('getFilename')
+			->willReturn($fileName);
+		$iteratorMock->method('isDir')
+			->willReturn(false);
+		$this->filter->method('current')
+			->willReturn($iteratorMock);
+
+		$actualResult = $this->filter->accept();
+		$this->assertEquals($expectedResult, $actualResult);
+	}
+
+	/**
+	 * @dataProvider fileNameProvider
+	 * @param string $fileName
+	 * @param bool $expectedResult
+	 */
+	public function testAcceptForDirs($fileName, $expectedResult): void {
+		$iteratorMock = $this->getMockBuilder(\RecursiveDirectoryIterator::class)
+			->disableOriginalConstructor()
+			->setMethods(['getFilename', 'isDir'])
+			->getMock();
+
+		$iteratorMock->method('getFilename')
+			->willReturn($fileName);
+		$iteratorMock->method('isDir')
+			->willReturn(true);
+		$this->filter->method('current')
+			->willReturn($iteratorMock);
+
+		$actualResult = $this->filter->accept();
+		$this->assertTrue($actualResult);
+	}
+}