From 97921d0c25469bd905906406c70a96eeb7fd1664 Mon Sep 17 00:00:00 2001
From: Bjoern Schiessle <schiessle@owncloud.com>
Date: Mon, 3 Feb 2014 13:39:05 +0100
Subject: [PATCH] add function to extract filename from sharekey name + tests

---
 apps/files_encryption/lib/keymanager.php   | 18 +++++++++++++++++-
 apps/files_encryption/tests/keymanager.php | 20 ++++++++++++++++++++
 2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/apps/files_encryption/lib/keymanager.php b/apps/files_encryption/lib/keymanager.php
index 17b8180bfdd..7abc565f609 100755
--- a/apps/files_encryption/lib/keymanager.php
+++ b/apps/files_encryption/lib/keymanager.php
@@ -437,7 +437,7 @@ class Keymanager {
 			$filename = pathinfo($filePath, PATHINFO_BASENAME);
 			foreach($view->getDirectoryContent($parentDir) as $content) {
 				$path = $content['path'];
-				if (strpos($content['name'], $filename) === 0) {
+				if (self::getFilenameFromShareKey($content['name'])  === $filename) {
 					$view->unlink('/' . $userId . '/' . $path);
 				}
 			}
@@ -538,4 +538,20 @@ class Keymanager {
 		return $targetPath;
 
 	}
+
+	/**
+	 * @brief extract filename from share key name
+	 * @param string $shareKey (filename.userid.sharekey)
+	 * @return mixed filename or false
+	 */
+	protected static function getFilenameFromShareKey($shareKey) {
+		$parts = explode('.', $shareKey);
+
+		$filename = false;
+		if(count($parts) > 2) {
+			$filename = implode('.', array_slice($parts, 0, count($parts)-2));
+		}
+
+		return $filename;
+	}
 }
diff --git a/apps/files_encryption/tests/keymanager.php b/apps/files_encryption/tests/keymanager.php
index 58a57ee5af4..6f32c50743c 100644
--- a/apps/files_encryption/tests/keymanager.php
+++ b/apps/files_encryption/tests/keymanager.php
@@ -136,6 +136,17 @@ class Test_Encryption_Keymanager extends \PHPUnit_Framework_TestCase {
 		$this->assertArrayHasKey('key', $sslInfo);
 	}
 
+	/**
+	 * @small
+	 */
+	function testGetFilenameFromShareKey() {
+		$this->assertEquals("file",
+				\TestProtectedKeymanagerMethods::testGetFilenameFromShareKey("file.user.shareKey"));
+		$this->assertEquals("file.name.with.dots",
+				\TestProtectedKeymanagerMethods::testGetFilenameFromShareKey("file.name.with.dots.user.shareKey"));
+		$this->assertFalse(\TestProtectedKeymanagerMethods::testGetFilenameFromShareKey("file.txt"));
+	}
+
 	/**
 	 * @medium
 	 */
@@ -234,3 +245,12 @@ class Test_Encryption_Keymanager extends \PHPUnit_Framework_TestCase {
 		\OC_FileProxy::$enabled = $proxyStatus;
 	}
 }
+
+/**
+ * dummy class to access protected methods of \OCA\Encryption\Keymanager for testing
+ */
+class TestProtectedKeymanagerMethods extends \OCA\Encryption\Keymanager {
+	public static function testGetFilenameFromShareKey($sharekey) {
+		return self::getFilenameFromShareKey($sharekey);
+	}
+}
\ No newline at end of file
-- 
2.39.5