/**
* if session is started, check if ownCloud key pair is set up, if not create it
* @param \OC\Files\View $view
*
* @note The ownCloud key pair is used to allow public link sharing even if encryption is enabled
*/
public function __construct($view)
{
$this->view = $view;
if (!$this->view->is_dir('files_encryption')) {
$this->view->mkdir('files_encryption');
}
$appConfig = \OC::$server->getAppConfig();
$publicShareKeyId = Helper::getPublicShareKeyId();
if ($publicShareKeyId === false) {
$publicShareKeyId = 'pubShare_' . substr(md5(time()), 0, 8);
$appConfig->setValue('files_encryption', 'publicShareKeyId', $publicShareKeyId);
}
if (!Keymanager::publicShareKeyExists($view)) {
$keypair = Crypt::createKeypair();
// Save public key
Keymanager::setPublicKey($keypair['publicKey'], $publicShareKeyId);
// Encrypt private key empty passphrase
$cipher = Helper::getCipher();
$encryptedKey = Crypt::symmetricEncryptFileContent($keypair['privateKey'], '', $cipher);
if ($encryptedKey) {
Keymanager::setPrivateSystemKey($encryptedKey, $publicShareKeyId);
} else {
\OCP\Util::writeLog('files_encryption', 'Could not create public share keys', \OCP\Util::ERROR);
}
}
if (Helper::isPublicAccess() && !self::getPublicSharePrivateKey()) {
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$encryptedKey = Keymanager::getPrivateSystemKey($publicShareKeyId);
$privateKey = Crypt::decryptPrivateKey($encryptedKey, '');
self::setPublicSharePrivateKey($privateKey);
\OC_FileProxy::$enabled = $proxyStatus;
}
}
/**
* if session is started, check if ownCloud key pair is set up, if not create it
* @param \OC\Files\View $view
*
* @note The ownCloud key pair is used to allow public link sharing even if encryption is enabled
*/
public function __construct($view)
{
$this->view = $view;
if (!$this->view->is_dir('owncloud_private_key')) {
$this->view->mkdir('owncloud_private_key');
}
$appConfig = \OC::$server->getAppConfig();
$publicShareKeyId = $appConfig->getValue('files_encryption', 'publicShareKeyId');
if ($publicShareKeyId === null) {
$publicShareKeyId = 'pubShare_' . substr(md5(time()), 0, 8);
$appConfig->setValue('files_encryption', 'publicShareKeyId', $publicShareKeyId);
}
if (!$this->view->file_exists("/public-keys/" . $publicShareKeyId . ".public.key") || !$this->view->file_exists("/owncloud_private_key/" . $publicShareKeyId . ".private.key")) {
$keypair = Crypt::createKeypair();
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
// Save public key
if (!$view->is_dir('/public-keys')) {
$view->mkdir('/public-keys');
}
$this->view->file_put_contents('/public-keys/' . $publicShareKeyId . '.public.key', $keypair['publicKey']);
// Encrypt private key empty passphrase
$cipher = \OCA\Encryption\Helper::getCipher();
$encryptedKey = \OCA\Encryption\Crypt::symmetricEncryptFileContent($keypair['privateKey'], '', $cipher);
if ($encryptedKey) {
Keymanager::setPrivateSystemKey($encryptedKey, $publicShareKeyId . '.private.key');
} else {
\OCP\Util::writeLog('files_encryption', 'Could not create public share keys', \OCP\Util::ERROR);
}
\OC_FileProxy::$enabled = $proxyStatus;
}
if (\OCA\Encryption\Helper::isPublicAccess()) {
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$encryptedKey = $this->view->file_get_contents('/owncloud_private_key/' . $publicShareKeyId . '.private.key');
$privateKey = Crypt::decryptPrivateKey($encryptedKey, '');
$this->setPublicSharePrivateKey($privateKey);
$this->setInitialized(\OCA\Encryption\Session::INIT_SUCCESSFUL);
\OC_FileProxy::$enabled = $proxyStatus;
}
}
/**
* enable recovery
*
* @param string $recoveryKeyId
* @param string $recoveryPassword
* @internal param \OCA\Encryption\Util $util
* @internal param string $password
* @return bool
*/
public static function adminEnableRecovery($recoveryKeyId, $recoveryPassword)
{
$view = new \OC\Files\View('/');
$appConfig = \OC::$server->getAppConfig();
if ($recoveryKeyId === null) {
$recoveryKeyId = 'recovery_' . substr(md5(time()), 0, 8);
$appConfig->setValue('files_encryption', 'recoveryKeyId', $recoveryKeyId);
}
if (!$view->is_dir('/owncloud_private_key')) {
$view->mkdir('/owncloud_private_key');
}
if (!$view->file_exists("/public-keys/" . $recoveryKeyId . ".public.key") || !$view->file_exists("/owncloud_private_key/" . $recoveryKeyId . ".private.key")) {
$keypair = \OCA\Encryption\Crypt::createKeypair();
\OC_FileProxy::$enabled = false;
// Save public key
if (!$view->is_dir('/public-keys')) {
$view->mkdir('/public-keys');
}
$view->file_put_contents('/public-keys/' . $recoveryKeyId . '.public.key', $keypair['publicKey']);
$cipher = \OCA\Encryption\Helper::getCipher();
$encryptedKey = \OCA\Encryption\Crypt::symmetricEncryptFileContent($keypair['privateKey'], $recoveryPassword, $cipher);
if ($encryptedKey) {
Keymanager::setPrivateSystemKey($encryptedKey, $recoveryKeyId . '.private.key');
// Set recoveryAdmin as enabled
$appConfig->setValue('files_encryption', 'recoveryAdminEnabled', 1);
$return = true;
}
\OC_FileProxy::$enabled = true;
} else {
// get recovery key and check the password
$util = new \OCA\Encryption\Util(new \OC\Files\View('/'), \OCP\User::getUser());
$return = $util->checkRecoveryPassword($recoveryPassword);
if ($return) {
$appConfig->setValue('files_encryption', 'recoveryAdminEnabled', 1);
}
}
return $return;
}
/**
* enable recovery
*
* @param string $recoveryKeyId
* @param string $recoveryPassword
* @return bool
*/
public static function adminEnableRecovery($recoveryKeyId, $recoveryPassword)
{
$view = new \OC\Files\View('/');
$appConfig = \OC::$server->getAppConfig();
if ($recoveryKeyId === null) {
$recoveryKeyId = 'recovery_' . substr(md5(time()), 0, 8);
$appConfig->setValue('files_encryption', 'recoveryKeyId', $recoveryKeyId);
}
if (!Keymanager::recoveryKeyExists($view)) {
$keypair = Crypt::createKeypair();
// Save public key
Keymanager::setPublicKey($keypair['publicKey'], $recoveryKeyId);
$cipher = Helper::getCipher();
$encryptedKey = Crypt::symmetricEncryptFileContent($keypair['privateKey'], $recoveryPassword, $cipher);
if ($encryptedKey) {
Keymanager::setPrivateSystemKey($encryptedKey, $recoveryKeyId);
// Set recoveryAdmin as enabled
$appConfig->setValue('files_encryption', 'recoveryAdminEnabled', 1);
$return = true;
}
} else {
// get recovery key and check the password
$util = new Util(new \OC\Files\View('/'), \OCP\User::getUser());
$return = $util->checkRecoveryPassword($recoveryPassword);
if ($return) {
$appConfig->setValue('files_encryption', 'recoveryAdminEnabled', 1);
}
}
return $return;
}