143 lines
4.0 KiB
PHP
143 lines
4.0 KiB
PHP
<?php
|
|
/**
|
|
* ownCloud
|
|
*
|
|
* @author Sam Tuke
|
|
* @copyright 2012 Sam Tuke samtuke@owncloud.org
|
|
*
|
|
* 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/>.
|
|
*
|
|
*/
|
|
|
|
namespace OCA\Encryption;
|
|
|
|
/**
|
|
* Class for hook specific logic
|
|
*/
|
|
|
|
class Hooks {
|
|
|
|
# TODO: use passphrase for encrypting private key that is separate to the login password
|
|
|
|
/**
|
|
* @brief Startup encryption backend upon user login
|
|
* @note This method should never be called for users using client side encryption
|
|
*/
|
|
public static function login( $params ) {
|
|
|
|
// if ( Crypt::mode( $params['uid'] ) == 'server' ) {
|
|
|
|
# TODO: use lots of dependency injection here
|
|
|
|
$view = new \OC_FilesystemView( '/' );
|
|
|
|
$util = new Util( $view, $params['uid'] );
|
|
|
|
if ( ! $util->ready() ) {
|
|
|
|
\OC_Log::write( 'Encryption library', 'User account "' . $params['uid'] . '" is not ready for encryption; configuration started' , \OC_Log::DEBUG );
|
|
|
|
return $util->setupServerSide( $params['password'] );
|
|
|
|
}
|
|
|
|
\OC_FileProxy::$enabled = false;
|
|
|
|
$encryptedKey = Keymanager::getPrivateKey( $view, $params['uid'] );
|
|
|
|
\OC_FileProxy::$enabled = true;
|
|
|
|
# TODO: dont manually encrypt the private keyfile - use the config options of openssl_pkey_export instead for better mobile compatibility
|
|
|
|
$privateKey = Crypt::symmetricDecryptFileContent( $encryptedKey, $params['password'] );
|
|
|
|
$session = new Session();
|
|
|
|
$session->setPrivateKey( $privateKey, $params['uid'] );
|
|
|
|
$view1 = new \OC_FilesystemView( '/' . $params['uid'] );
|
|
|
|
// Set legacy encryption key if it exists, to support
|
|
// depreciated encryption system
|
|
if (
|
|
$view1->file_exists( 'encryption.key' )
|
|
&& $legacyKey = $view1->file_get_contents( 'encryption.key' )
|
|
) {
|
|
|
|
$_SESSION['legacyenckey'] = Crypt::legacyDecrypt( $legacyKey, $params['password'] );
|
|
|
|
}
|
|
// }
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Change a user's encryption passphrase
|
|
* @param array $params keys: uid, password
|
|
*/
|
|
public static function setPassphrase( $params ) {
|
|
|
|
// Only attempt to change passphrase if server-side encryption
|
|
// is in use (client-side encryption does not have access to
|
|
// the necessary keys)
|
|
if ( Crypt::mode() == 'server' ) {
|
|
|
|
// Get existing decrypted private key
|
|
$privateKey = $_SESSION['privateKey'];
|
|
|
|
// Encrypt private key with new user pwd as passphrase
|
|
$encryptedPrivateKey = Crypt::symmetricEncryptFileContent( $privateKey, $params['password'] );
|
|
|
|
// Save private key
|
|
Keymanager::setPrivateKey( $encryptedPrivateKey );
|
|
|
|
# NOTE: Session does not need to be updated as the
|
|
# private key has not changed, only the passphrase
|
|
# used to decrypt it has changed
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief update the encryption key of the file uploaded by the client
|
|
*/
|
|
public static function updateKeyfile( $params ) {
|
|
|
|
if ( Crypt::mode() == 'client' ) {
|
|
|
|
if ( isset( $params['properties']['key'] ) ) {
|
|
|
|
Keymanager::setFileKey( $params['path'], $params['properties']['key'] );
|
|
|
|
} else {
|
|
|
|
\OC_Log::write(
|
|
'Encryption library', "Client side encryption is enabled but the client doesn't provide a encryption key for the file!"
|
|
, \OC_Log::ERROR
|
|
);
|
|
|
|
error_log( "Client side encryption is enabled but the client doesn't provide an encryption key for the file!" );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
?>
|