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sources/apps/files_encryption/tests/hooks.php 18 KB
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  <?php
  /**
   * ownCloud
   *
   * @author Bjoern Schiessle
   * @copyright 2014 Bjoern Schiessle <schiessle@owncloud.com>
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
   * License as published by the Free Software Foundation; either
   * version 3 of the License, or any later version.
   *
   * This library 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 along with this library.  If not, see <http://www.gnu.org/licenses/>.
   *
   */
  
  require_once __DIR__ . '/../../../lib/base.php';
  require_once __DIR__ . '/../lib/crypt.php';
  require_once __DIR__ . '/../lib/keymanager.php';
  require_once __DIR__ . '/../lib/stream.php';
  require_once __DIR__ . '/../lib/util.php';
  require_once __DIR__ . '/../appinfo/app.php';
  require_once __DIR__ . '/util.php';
  
  use OCA\Encryption;
  
  /**
   * Class Test_Encryption_Hooks
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   * this class provide basic hook app tests
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   */
  class Test_Encryption_Hooks extends \PHPUnit_Framework_TestCase {
  
  	const TEST_ENCRYPTION_HOOKS_USER1 = "test-encryption-hooks-user1";
  	const TEST_ENCRYPTION_HOOKS_USER2 = "test-encryption-hooks-user2";
  
  	/**
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  	 * @var \OC\Files\View
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  	 */
  	public $user1View;     // view on /data/user1/files
  	public $user2View;     // view on /data/user2/files
  	public $rootView; // view on /data/user
  	public $data;
  	public $filename;
  	public $folder;
  
  	public static function setUpBeforeClass() {
  		// reset backend
  		\OC_User::clearBackends();
  		\OC_User::useBackend('database');
  
  		\OC_Hook::clear('OC_Filesystem');
  		\OC_Hook::clear('OC_User');
  
  		// clear share hooks
  		\OC_Hook::clear('OCP\\Share');
  		\OC::registerShareHooks();
  		\OCP\Util::connectHook('OC_Filesystem', 'setup', '\OC\Files\Storage\Shared', 'setup');
  
  		// Filesystem related hooks
  		\OCA\Encryption\Helper::registerFilesystemHooks();
  
  		// Sharing related hooks
  		\OCA\Encryption\Helper::registerShareHooks();
  
  		// clear and register proxies
  		\OC_FileProxy::clearProxies();
  		\OC_FileProxy::register(new OCA\Encryption\Proxy());
  
  		// create test user
  		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1, true);
  		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2, true);
  	}
  
  	function setUp() {
  		// set user id
  		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
  		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
  
  		// init filesystem view
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  		$this->user1View = new \OC\Files\View('/'. \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '/files');
  		$this->user2View = new \OC\Files\View('/'. \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '/files');
  		$this->rootView = new \OC\Files\View('/');
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  		// init short data
  		$this->data = 'hats';
  		$this->filename = 'enc_hooks_tests-' . uniqid() . '.txt';
  		$this->folder = 'enc_hooks_tests_folder-' . uniqid();
  
  	}
  
  	public static function tearDownAfterClass() {
  		// cleanup test user
  		\OC_User::deleteUser(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
  		\OC_User::deleteUser(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
  	}
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  	function testDisableHook() {
  		// encryption is enabled and running so we should have some user specific
  		// settings in oc_preferences
  		$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*preferences` WHERE `appid` = ?');
  		$result = $query->execute(array('files_encryption'));
  		$row = $result->fetchRow();
  		$this->assertTrue(is_array($row));
  
  		// disabling the app should delete all user specific settings
  		\OCA\Encryption\Hooks::preDisable(array('app' => 'files_encryption'));
  
  		// check if user specific settings for the encryption app are really gone
  		$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*preferences` WHERE `appid` = ?');
  		$result = $query->execute(array('files_encryption'));
  		$row = $result->fetchRow();
  		$this->assertFalse($row);
  
  		// relogin user to initialize the encryption again
  		$user =  \OCP\User::getUser();
  		\Test_Encryption_Util::loginHelper($user);
  
  	}
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  	function testDeleteHooks() {
  
  		// remember files_trashbin state
  		$stateFilesTrashbin = OC_App::isEnabled('files_trashbin');
  
  		// we want to tests with app files_trashbin disabled
  		\OC_App::disable('files_trashbin');
  
  		// make sure that the trash bin is disabled
  		$this->assertFalse(\OC_APP::isEnabled('files_trashbin'));
  
  		$this->user1View->file_put_contents($this->filename, $this->data);
  
  		// check if all keys are generated
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
  
  
  		\Test_Encryption_Util::logoutHelper();
  		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
  		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
  
  
  		$this->user2View->file_put_contents($this->filename, $this->data);
  
  		// check if all keys are generated
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
  
  
  		// create a dummy file that we can delete something outside of data/user/files
  		// in this case no share or file keys should be deleted
  		$this->rootView->file_put_contents(self::TEST_ENCRYPTION_HOOKS_USER2 . "/" . $this->filename, $this->data);
  
  		// delete dummy file outside of data/user/files
  		$this->rootView->unlink(self::TEST_ENCRYPTION_HOOKS_USER2 . "/" . $this->filename);
  
  		// all keys should still exist
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
  
  
  		// delete the file in data/user/files
  		// now the correspondig share and file keys from user2 should be deleted
  		$this->user2View->unlink($this->filename);
  
  		// check if keys from user2 are really deleted
  		$this->assertFalse($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
  		$this->assertFalse($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
  
  		// but user1 keys should still exist
  		$this->assertTrue($this->rootView->file_exists(
  				self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  				. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  		$this->assertTrue($this->rootView->file_exists(
  				self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
  
  		if ($stateFilesTrashbin) {
  			OC_App::enable('files_trashbin');
  		}
  		else {
  			OC_App::disable('files_trashbin');
  		}
  	}
  
  	function testDeleteHooksForSharedFiles() {
  
  		\Test_Encryption_Util::logoutHelper();
  		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
  		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
  
  		// remember files_trashbin state
  		$stateFilesTrashbin = OC_App::isEnabled('files_trashbin');
  
  		// we want to tests with app files_trashbin disabled
  		\OC_App::disable('files_trashbin');
  
  		// make sure that the trash bin is disabled
  		$this->assertFalse(\OC_APP::isEnabled('files_trashbin'));
  
  		$this->user1View->file_put_contents($this->filename, $this->data);
  
  		// check if all keys are generated
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
  
  		// get the file info from previous created file
  		$fileInfo = $this->user1View->getFileInfo($this->filename);
  
  		// check if we have a valid file info
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  		$this->assertTrue($fileInfo instanceof \OC\Files\FileInfo);
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  		// share the file with user2
  		\OCP\Share::shareItem('file', $fileInfo['fileid'], \OCP\Share::SHARE_TYPE_USER, self::TEST_ENCRYPTION_HOOKS_USER2, OCP\PERMISSION_ALL);
  
  		// check if new share key exists
  		$this->assertTrue($this->rootView->file_exists(
  			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
  
  		\Test_Encryption_Util::logoutHelper();
  		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
  		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
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  		// user2 update the shared file
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  		$this->user2View->file_put_contents($this->filename, $this->data);
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  		// keys should be stored at user1s dir, not in user2s
  		$this->assertFalse($this->rootView->file_exists(
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  			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
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  		$this->assertFalse($this->rootView->file_exists(
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  			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
  
  		// delete the Shared file from user1 in data/user2/files/Shared
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  		$result = $this->user2View->unlink($this->filename);
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  		$this->assertTrue($result);
  
  		// share key for user2 from user1s home should be gone, all other keys should still exists
  		$this->assertTrue($this->rootView->file_exists(









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  			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  		$this->assertFalse($this->rootView->file_exists(
  				self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  				. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));









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  		$this->assertTrue($this->rootView->file_exists(









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  			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->filename . '.key'));









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  		// cleanup









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  		\Test_Encryption_Util::logoutHelper();
  		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
  		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);









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  		if ($stateFilesTrashbin) {
  			OC_App::enable('files_trashbin');
  		}
  		else {
  			OC_App::disable('files_trashbin');
  		}
  	}
  
  	/**









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  	 * test rename operation









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  	 */
  	function testRenameHook() {
  
  		// save file with content
  		$cryptedFile = file_put_contents('crypt:///' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->filename, $this->data);
  
  		// test that data was successfully written
  		$this->assertTrue(is_int($cryptedFile));
  
  		// check if keys exists
  		$this->assertTrue($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . self::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  
  		$this->assertTrue($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/'
  			. $this->filename . '.key'));









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  		// make subfolder and sub-subfolder









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  		$this->rootView->mkdir('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder);









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  		$this->rootView->mkdir('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder . '/' . $this->folder);









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  		$this->assertTrue($this->rootView->is_dir('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder . '/' . $this->folder));









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  		// move the file to the sub-subfolder









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  		$root = $this->rootView->getRoot();
  		$this->rootView->chroot('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/');









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  		$this->rootView->rename($this->filename, '/' . $this->folder . '/' . $this->folder . '/' . $this->filename);









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  		$this->rootView->chroot($root);
  
  		$this->assertFalse($this->rootView->file_exists('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->filename));









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  		$this->assertTrue($this->rootView->file_exists('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder . '/' . $this->folder . '/' . $this->filename));









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  		// keys should be renamed too
  		$this->assertFalse($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . self::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  		$this->assertFalse($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/'
  			. $this->filename . '.key'));
  
  		$this->assertTrue($this->rootView->file_exists(









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  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/' . $this->folder . '/' . $this->folder . '/'
  			. $this->filename . '.' . self::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  		$this->assertTrue($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->folder . '/' . $this->folder . '/'
  			. $this->filename . '.key'));
  
  		// cleanup
  		$this->rootView->unlink('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder);
  	}
  
  	/**
  	 * test rename operation
  	 */
  	function testCopyHook() {
  
  		// save file with content
  		$cryptedFile = file_put_contents('crypt:///' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->filename, $this->data);
  
  		// test that data was successfully written
  		$this->assertTrue(is_int($cryptedFile));
  
  		// check if keys exists
  		$this->assertTrue($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
  			. $this->filename . '.' . self::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  
  		$this->assertTrue($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/'
  			. $this->filename . '.key'));
  
  		// make subfolder and sub-subfolder
  		$this->rootView->mkdir('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder);
  		$this->rootView->mkdir('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder . '/' . $this->folder);
  
  		$this->assertTrue($this->rootView->is_dir('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder . '/' . $this->folder));
  
  		// copy the file to the sub-subfolder
  		\OC\Files\Filesystem::copy($this->filename, '/' . $this->folder . '/' . $this->folder . '/' . $this->filename);
  
  		$this->assertTrue($this->rootView->file_exists('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->filename));
  		$this->assertTrue($this->rootView->file_exists('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder . '/' . $this->folder . '/' . $this->filename));
  
  		// keys should be copied too
  		$this->assertTrue($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'









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  			. $this->filename . '.' . self::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  		$this->assertTrue($this->rootView->file_exists(









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  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/'
  			. $this->filename . '.key'));
  
  		$this->assertTrue($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/' . $this->folder . '/' . $this->folder . '/'
  			. $this->filename . '.' . self::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
  		$this->assertTrue($this->rootView->file_exists(
  			'/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->folder . '/' . $this->folder . '/'









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  			. $this->filename . '.key'));
  
  		// cleanup
  		$this->rootView->unlink('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->folder);









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  		$this->rootView->unlink('/' . self::TEST_ENCRYPTION_HOOKS_USER1 . '/files/' . $this->filename);
  	}
  
  	/**
  	 * @brief replacing encryption keys during password change should be allowed
  	 *        until the user logged in for the first time
  	 */
  	public function testSetPassphrase() {
  
  		$view = new \OC\Files\View();
  
  		// set user password for the first time
  		\OCA\Encryption\Hooks::postCreateUser(array('uid' => 'newUser', 'password' => 'newUserPassword'));
  
  		$this->assertTrue($view->file_exists('public-keys/newUser.public.key'));
  		$this->assertTrue($view->file_exists('newUser/files_encryption/newUser.private.key'));
  
  		// check if we are able to decrypt the private key
  		$encryptedKey = \OCA\Encryption\Keymanager::getPrivateKey($view, 'newUser');
  		$privateKey = \OCA\Encryption\Crypt::decryptPrivateKey($encryptedKey, 'newUserPassword');
  		$this->assertTrue(is_string($privateKey));
  
  		// change the password before the user logged-in for the first time,
  		// we can replace the encryption keys
  		\OCA\Encryption\Hooks::setPassphrase(array('uid' => 'newUser', 'password' => 'passwordChanged'));
  
  		$encryptedKey = \OCA\Encryption\Keymanager::getPrivateKey($view, 'newUser');
  		$privateKey = \OCA\Encryption\Crypt::decryptPrivateKey($encryptedKey, 'passwordChanged');
  		$this->assertTrue(is_string($privateKey));
  
  		// now create a files folder to simulate a already used account
  		$view->mkdir('/newUser/files');
  
  		// change the password after the user logged in, now the password should not change
  		\OCA\Encryption\Hooks::setPassphrase(array('uid' => 'newUser', 'password' => 'passwordChanged2'));
  
  		$encryptedKey = \OCA\Encryption\Keymanager::getPrivateKey($view, 'newUser');
  		$privateKey = \OCA\Encryption\Crypt::decryptPrivateKey($encryptedKey, 'passwordChanged2');
  		$this->assertFalse($privateKey);
  
  		$privateKey = \OCA\Encryption\Crypt::decryptPrivateKey($encryptedKey, 'passwordChanged');
  		$this->assertTrue(is_string($privateKey));









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  	}
  
  }