protected function setUp()
{
parent::setUp();
// login user
self::loginHelper(self::TEST_ENCRYPTION_UTIL_USER1);
\OC_User::setUserId(self::TEST_ENCRYPTION_UTIL_USER1);
$this->userId = self::TEST_ENCRYPTION_UTIL_USER1;
$this->pass = self::TEST_ENCRYPTION_UTIL_USER1;
// set content for encrypting / decrypting in tests
$this->dataUrl = __DIR__ . '/../lib/crypt.php';
$this->dataShort = 'hats';
$this->dataLong = file_get_contents(__DIR__ . '/../lib/crypt.php');
$this->legacyData = __DIR__ . '/legacy-text.txt';
$this->legacyEncryptedData = __DIR__ . '/legacy-encrypted-text.txt';
$this->legacyEncryptedDataKey = __DIR__ . '/encryption.key';
$this->legacyKey = "30943623843030686906";
$keypair = \OCA\Files_Encryption\Crypt::createKeypair();
$this->genPublicKey = $keypair['publicKey'];
$this->genPrivateKey = $keypair['privateKey'];
$this->publicKeyDir = \OCA\Files_Encryption\Keymanager::getPublicKeyPath();
$this->encryptionDir = '/' . $this->userId . '/' . 'files_encryption';
$this->keysPath = $this->encryptionDir . '/' . 'keys';
$this->publicKeyPath = $this->publicKeyDir . '/' . $this->userId . '.publicKey';
// e.g. data/public-keys/admin.publicKey
$this->privateKeyPath = $this->encryptionDir . '/' . $this->userId . '.privateKey';
// e.g. data/admin/admin.privateKey
$this->view = new \OC\Files\View('/');
$this->util = new \OCA\Files_Encryption\Util($this->view, $this->userId);
// remember files_trashbin state
$this->stateFilesTrashbin = \OC_App::isEnabled('files_trashbin');
// we don't want to tests with app files_trashbin enabled
\OC_App::disable('files_trashbin');
}
/**
* decrypt private key and add it to the current session
* @param array $params with 'uid' and 'password'
* @return mixed session or false
*/
public function initEncryption($params)
{
$session = new Session($this->view);
// we tried to initialize the encryption app for this session
$session->setInitialized(Session::INIT_EXECUTED);
$encryptedKey = Keymanager::getPrivateKey($this->view, $params['uid']);
$privateKey = false;
if ($encryptedKey) {
$privateKey = Crypt::decryptPrivateKey($encryptedKey, $params['password']);
}
if ($privateKey === false) {
\OCP\Util::writeLog('Encryption library', 'Private key for user "' . $params['uid'] . '" is not valid! Maybe the user password was changed from outside if so please change it back to gain access', \OCP\Util::ERROR);
return false;
}
$session->setPrivateKey($privateKey);
$session->setInitialized(Session::INIT_SUCCESSFUL);
return $session;
}
/**
* @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
\OC_User::createUser(self::TEST_ENCRYPTION_HOOKS_USER3, 'newUserPassword');
\OCA\Files_Encryption\Hooks::postCreateUser(array('uid' => self::TEST_ENCRYPTION_HOOKS_USER3, 'password' => 'newUserPassword'));
$this->assertTrue($view->file_exists(\OCA\Files_Encryption\Keymanager::getPublicKeyPath() . '/' . self::TEST_ENCRYPTION_HOOKS_USER3 . '.publicKey'));
$this->assertTrue($view->file_exists(self::TEST_ENCRYPTION_HOOKS_USER3 . '/files_encryption/' . self::TEST_ENCRYPTION_HOOKS_USER3 . '.privateKey'));
// check if we are able to decrypt the private key
$encryptedKey = \OCA\Files_Encryption\Keymanager::getPrivateKey($view, self::TEST_ENCRYPTION_HOOKS_USER3);
$privateKey = \OCA\Files_Encryption\Crypt::decryptPrivateKey($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\Files_Encryption\Hooks::setPassphrase(array('uid' => self::TEST_ENCRYPTION_HOOKS_USER3, 'password' => 'passwordChanged'));
$encryptedKey = \OCA\Files_Encryption\Keymanager::getPrivateKey($view, self::TEST_ENCRYPTION_HOOKS_USER3);
$privateKey = \OCA\Files_Encryption\Crypt::decryptPrivateKey($encryptedKey, 'passwordChanged');
$this->assertTrue(is_string($privateKey));
// now create a files folder to simulate a already used account
$view->mkdir('/' . self::TEST_ENCRYPTION_HOOKS_USER3 . '/files');
// change the password after the user logged in, now the password should not change
\OCA\Files_Encryption\Hooks::setPassphrase(array('uid' => self::TEST_ENCRYPTION_HOOKS_USER3, 'password' => 'passwordChanged2'));
$encryptedKey = \OCA\Files_Encryption\Keymanager::getPrivateKey($view, self::TEST_ENCRYPTION_HOOKS_USER3);
$privateKey = \OCA\Files_Encryption\Crypt::decryptPrivateKey($encryptedKey, 'passwordChanged2');
$this->assertFalse($privateKey);
$privateKey = \OCA\Files_Encryption\Crypt::decryptPrivateKey($encryptedKey, 'passwordChanged');
$this->assertTrue(is_string($privateKey));
}
$errorMessage = $l->t('Please repeat the new recovery password');
\OCP\JSON::error(array('data' => array('message' => $errorMessage)));
exit;
}
if ($_POST['newPassword'] !== $_POST['confirmPassword']) {
$errorMessage = $l->t('Repeated recovery key password does not match the provided recovery key password');
\OCP\JSON::error(array('data' => array('message' => $errorMessage)));
exit;
}
$view = new \OC\Files\View('/');
$util = new \OCA\Files_Encryption\Util(new \OC\Files\View('/'), \OCP\User::getUser());
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$keyId = $util->getRecoveryKeyId();
$encryptedRecoveryKey = \OCA\Files_Encryption\Keymanager::getPrivateSystemKey($keyId);
$decryptedRecoveryKey = $encryptedRecoveryKey ? \OCA\Files_Encryption\Crypt::decryptPrivateKey($encryptedRecoveryKey, $oldPassword) : false;
if ($decryptedRecoveryKey) {
$cipher = \OCA\Files_Encryption\Helper::getCipher();
$encryptedKey = \OCA\Files_Encryption\Crypt::symmetricEncryptFileContent($decryptedRecoveryKey, $newPassword, $cipher);
if ($encryptedKey) {
\OCA\Files_Encryption\Keymanager::setPrivateSystemKey($encryptedKey, $keyId);
$return = true;
}
}
\OC_FileProxy::$enabled = $proxyStatus;
// success or failure
if ($return) {
\OCP\JSON::success(array('data' => array('message' => $l->t('Password successfully changed.'))));
} else {
\OCP\JSON::error(array('data' => array('message' => $l->t('Could not change the password. Maybe the old password was not correct.'))));
}
/**
* @medium
*/
function testFailShareFile()
{
// login as admin
self::loginHelper(self::TEST_ENCRYPTION_SHARE_USER1);
// save file with content
$cryptedFile = file_put_contents('crypt:///' . self::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->filename, $this->dataShort);
// test that data was successfully written
$this->assertInternalType('int', $cryptedFile);
// disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
// get the file info from previous created file
$fileInfo = $this->view->getFileInfo('/' . self::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->filename);
// check if we have a valid file info
$this->assertInstanceOf('\\OC\\Files\\FileInfo', $fileInfo);
// check if the unencrypted file size is stored
$this->assertGreaterThan(0, $fileInfo['unencrypted_size']);
// break users public key
$this->view->rename(\OCA\Files_Encryption\Keymanager::getPublicKeyPath() . '/' . self::TEST_ENCRYPTION_SHARE_USER3 . '.publicKey', \OCA\Files_Encryption\Keymanager::getPublicKeyPath() . '/' . self::TEST_ENCRYPTION_SHARE_USER3 . '.publicKey_backup');
// re-enable the file proxy
\OC_FileProxy::$enabled = $proxyStatus;
// share the file
try {
\OCP\Share::shareItem('file', $fileInfo['fileid'], \OCP\Share::SHARE_TYPE_GROUP, self::TEST_ENCRYPTION_SHARE_GROUP1, \OCP\Constants::PERMISSION_ALL);
} catch (\Exception $e) {
$this->assertEquals(0, strpos($e->getMessage(), "Following users are not set up for encryption"));
}
// login as admin
self::loginHelper(self::TEST_ENCRYPTION_SHARE_USER1);
// check if share key for user1 not exists
$this->assertFalse($this->view->file_exists('/' . self::TEST_ENCRYPTION_SHARE_USER1 . '/files_encryption/keys/' . $this->filename . '/' . self::TEST_ENCRYPTION_SHARE_USER3 . '.shareKey'));
// disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
// break user1 public key
$this->view->rename(\OCA\Files_Encryption\Keymanager::getPublicKeyPath() . '/' . self::TEST_ENCRYPTION_SHARE_USER3 . '.publicKey_backup', \OCA\Files_Encryption\Keymanager::getPublicKeyPath() . '/' . self::TEST_ENCRYPTION_SHARE_USER3 . '.publicKey');
// remove share file
$this->view->unlink('/' . self::TEST_ENCRYPTION_SHARE_USER1 . '/files_encryption/keys/' . $this->filename . '/' . self::TEST_ENCRYPTION_SHARE_USER3 . '.shareKey');
// re-enable the file proxy
\OC_FileProxy::$enabled = $proxyStatus;
// unshare the file with user1
\OCP\Share::unshare('file', $fileInfo['fileid'], \OCP\Share::SHARE_TYPE_GROUP, self::TEST_ENCRYPTION_SHARE_GROUP1);
// check if share key not exists
$this->assertFalse($this->view->file_exists('/' . self::TEST_ENCRYPTION_SHARE_USER1 . '/files_encryption/keys/' . $this->filename . '/' . self::TEST_ENCRYPTION_SHARE_USER3 . '.shareKey'));
// cleanup
$this->view->chroot('/' . self::TEST_ENCRYPTION_SHARE_USER1 . '/files/');
$this->view->unlink($this->filename);
$this->view->chroot('/');
}
/**
* @return bool
*/
public function stream_close()
{
$this->flush();
// if there is no valid private key return false
if ($this->privateKey === false) {
// cleanup
if ($this->meta['mode'] !== 'r' && $this->meta['mode'] !== 'rb' && !$this->isLocalTmpFile) {
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
if ($this->rootView->file_exists($this->rawPath) && $this->size === 0) {
fclose($this->handle);
$this->rootView->unlink($this->rawPath);
}
// Re-enable proxy - our work is done
\OC_FileProxy::$enabled = $proxyStatus;
}
// if private key is not valid redirect user to a error page
Helper::redirectToErrorPage($this->session);
}
if ($this->meta['mode'] !== 'r' && $this->meta['mode'] !== 'rb' && $this->isLocalTmpFile === false && $this->size > 0 && $this->unencryptedSize > 0) {
// only write keyfiles if it was a new file
if ($this->newFile === true) {
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
// Fetch user's public key
$this->publicKey = Keymanager::getPublicKey($this->rootView, $this->keyId);
// Check if OC sharing api is enabled
$sharingEnabled = \OCP\Share::isEnabled();
// Get all users sharing the file includes current user
$uniqueUserIds = $this->util->getSharingUsersArray($sharingEnabled, $this->relPath);
$checkedUserIds = $this->util->filterShareReadyUsers($uniqueUserIds);
// Fetch public keys for all sharing users
$publicKeys = Keymanager::getPublicKeys($this->rootView, $checkedUserIds['ready']);
// Encrypt enc key for all sharing users
$this->encKeyfiles = Crypt::multiKeyEncrypt($this->plainKey, $publicKeys);
// Save the new encrypted file key
Keymanager::setFileKey($this->rootView, $this->util, $this->relPath, $this->encKeyfiles['data']);
// Save the sharekeys
Keymanager::setShareKeys($this->rootView, $this->util, $this->relPath, $this->encKeyfiles['keys']);
// Re-enable proxy - our work is done
\OC_FileProxy::$enabled = $proxyStatus;
}
// we need to update the file info for the real file, not for the
// part file.
$path = Helper::stripPartialFileExtension($this->rawPath);
$fileInfo = array('mimetype' => $this->rootView->getMimeType($this->rawPath), 'encrypted' => true, 'unencrypted_size' => $this->unencryptedSize);
// if we write a part file we also store the unencrypted size for
// the part file so that it can be re-used later
$this->rootView->putFileInfo($this->rawPath, $fileInfo);
if ($path !== $this->rawPath) {
$this->rootView->putFileInfo($path, $fileInfo);
}
}
$result = fclose($this->handle);
if ($result === false) {
\OCP\Util::writeLog('Encryption library', 'Could not close stream, file could be corrupted', \OCP\Util::FATAL);
}
return $result;
}
$view = new \OC\Files\View('/');
$session = new \OCA\Files_Encryption\Session($view);
$user = \OCP\User::getUser();
$loginName = \OC::$server->getUserSession()->getLoginName();
// check new password
$passwordCorrect = \OCP\User::checkPassword($loginName, $newPassword);
if ($passwordCorrect !== false) {
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$encryptedKey = \OCA\Files_Encryption\Keymanager::getPrivateKey($view, $user);
$decryptedKey = $encryptedKey ? \OCA\Files_Encryption\Crypt::decryptPrivateKey($encryptedKey, $oldPassword) : false;
if ($decryptedKey) {
$cipher = \OCA\Files_Encryption\Helper::getCipher();
$encryptedKey = \OCA\Files_Encryption\Crypt::symmetricEncryptFileContent($decryptedKey, $newPassword, $cipher);
if ($encryptedKey) {
\OCA\Files_Encryption\Keymanager::setPrivateKey($encryptedKey, $user);
$session->setPrivateKey($decryptedKey);
$return = true;
}
} else {
$result = false;
$errorMessage = $l->t('The old password was not correct, please try again.');
}
\OC_FileProxy::$enabled = $proxyStatus;
} else {
$result = false;
$errorMessage = $l->t('The current log-in password was not correct, please try again.');
}
// success or failure
if ($return) {
$session->setInitialized(\OCA\Files_Encryption\Session::INIT_SUCCESSFUL);
/**
* @medium
*/
function testRecursiveDelShareKeysFile()
{
$this->view->mkdir('/' . self::TEST_USER . '/files/folder1');
$this->view->file_put_contents('/' . self::TEST_USER . '/files/folder1/existingFile.txt', 'data');
// create folder structure for some dummy share key files
$this->view->mkdir('/' . self::TEST_USER . '/files_encryption/keys/folder1');
$this->view->mkdir('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile.txt');
// create some dummy share keys
$this->view->file_put_contents('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile.txt/user1.shareKey', 'data');
$this->view->file_put_contents('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile.txt/user2.shareKey', 'data');
$this->view->file_put_contents('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile.txt/user3.shareKey', 'data');
$this->view->file_put_contents('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile.txt/' . self::TEST_USER . '.shareKey', 'data');
// recursive delete share keys from user1 and user2
\OCA\Files_Encryption\Keymanager::delShareKey($this->view, array('user1', 'user2', self::TEST_USER), \OCA\Files_Encryption\Keymanager::getKeyPath($this->view, new \OCA\Files_Encryption\Util($this->view, self::TEST_USER), '/folder1/existingFile.txt'), self::TEST_USER, '/folder1/existingFile.txt');
// check if share keys from user1 and user2 are deleted
$this->assertFalse($this->view->file_exists('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile/user1.shareKey'));
$this->assertFalse($this->view->file_exists('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile/user2.shareKey'));
// check if share keys for user3 and owner
$this->assertTrue($this->view->file_exists('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile.txt/' . self::TEST_USER . '.shareKey'));
$this->assertTrue($this->view->file_exists('/' . self::TEST_USER . '/files_encryption/keys/folder1/existingFile.txt/user3.shareKey'));
// cleanup
$this->view->deleteAll('/' . self::TEST_USER . '/files/folder1');
}