170 lines
4.0 KiB
PHP
170 lines
4.0 KiB
PHP
<?php
|
|
/**
|
|
* ownCloud
|
|
*
|
|
* @author Sam Tuke
|
|
* @copyright 2012 Sam Tuke samtuke@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/>.
|
|
*
|
|
*/
|
|
|
|
namespace OCA\Encryption;
|
|
|
|
/**
|
|
* Class for handling encryption related session data
|
|
*/
|
|
|
|
class Session {
|
|
|
|
private $view;
|
|
|
|
/**
|
|
* @brief if session is started, check if ownCloud key pair is set up, if not create it
|
|
*
|
|
* 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' );
|
|
|
|
}
|
|
|
|
$publicShareKeyId = \OC_Appconfig::getValue('files_encryption', 'publicShareKeyId');
|
|
|
|
if ($publicShareKeyId === null) {
|
|
$publicShareKeyId = 'pubShare_'.substr(md5(time()),0,8);
|
|
\OC_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 empthy passphrase
|
|
$encryptedPrivateKey = Crypt::symmetricEncryptFileContent( $keypair['privateKey'], '' );
|
|
|
|
// Save private key
|
|
$this->view->file_put_contents( '/owncloud_private_key/'.$publicShareKeyId.'.private.key', $encryptedPrivateKey );
|
|
|
|
\OC_FileProxy::$enabled = $proxyStatus;
|
|
|
|
}
|
|
|
|
if(\OCP\USER::getUser() === false) {
|
|
// 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::symmetricDecryptFileContent( $encryptedKey, '' );
|
|
$this->setPrivateKey($privateKey);
|
|
|
|
\OC_FileProxy::$enabled = $proxyStatus;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Sets user private key to session
|
|
* @return bool
|
|
*
|
|
*/
|
|
public function setPrivateKey( $privateKey ) {
|
|
|
|
$_SESSION['privateKey'] = $privateKey;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Gets user private key from session
|
|
* @returns string $privateKey The user's plaintext private key
|
|
*
|
|
*/
|
|
public function getPrivateKey() {
|
|
|
|
if (
|
|
isset( $_SESSION['privateKey'] )
|
|
&& !empty( $_SESSION['privateKey'] )
|
|
) {
|
|
|
|
return $_SESSION['privateKey'];
|
|
|
|
} else {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Sets user legacy key to session
|
|
* @return bool
|
|
*
|
|
*/
|
|
public function setLegacyKey( $legacyKey ) {
|
|
|
|
if ( $_SESSION['legacyKey'] = $legacyKey ) {
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Gets user legacy key from session
|
|
* @returns string $legacyKey The user's plaintext legacy key
|
|
*
|
|
*/
|
|
public function getLegacyKey() {
|
|
|
|
if (
|
|
isset( $_SESSION['legacyKey'] )
|
|
&& !empty( $_SESSION['legacyKey'] )
|
|
) {
|
|
|
|
return $_SESSION['legacyKey'];
|
|
|
|
} else {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} |