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<?php |
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/** |
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* sysPass |
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* |
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* @author nuxsmin |
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* @link https://syspass.org |
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* @copyright 2012-2018, Rubén Domínguez nuxsmin@$syspass.org |
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* |
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* This file is part of sysPass. |
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* |
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* sysPass is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* sysPass is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with sysPass. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace SP\Core\Crypt; |
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use Defuse\Crypto\Exception\CryptoException; |
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use Defuse\Crypto\Key; |
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use SP\Http\Request; |
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/** |
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* Class SecureKeyCookie |
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* |
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* @package SP\Core\Crypt |
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*/ |
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final class SecureKeyCookie extends Cookie |
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{ |
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/** |
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* Nombre de la cookie |
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*/ |
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const COOKIE_NAME = 'SYSPASS_SK'; |
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/** |
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* Llave usada para encriptar los datos |
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* |
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* @var Key |
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*/ |
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private $securedKey; |
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/** |
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* @var string |
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*/ |
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private $cypher; |
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/** |
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* @param Request $request |
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* |
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* @return SecureKeyCookie |
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*/ |
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public static function factory(Request $request) |
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{ |
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$self = new self(self::COOKIE_NAME, $request); |
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$self->cypher = $self->getCypher(); |
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return $self; |
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} |
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/** |
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* Devolver la llave de cifrado para los datos de la cookie |
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* |
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* @return string |
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*/ |
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public function getCypher() |
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{ |
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return sha1($this->request->getHeader('User-Agent') . $this->request->getClientAddress()); |
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} |
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/** |
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* Obtener una llave de encriptación |
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* |
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* @return Key|false|string |
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*/ |
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public function getKey() |
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{ |
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$cookie = $this->getCookie(); |
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if ($cookie !== false) { |
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$data = $this->getCookieData($cookie, $this->cypher); |
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if ($data !== false) { |
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/** @var Vault $vault */ |
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$vault = unserialize($data, ['allowed_classes' => Vault::class]); |
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if ($vault !== false |
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&& ($vault instanceof Vault) === true |
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) { |
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try { |
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$this->securedKey = Key::loadFromAsciiSafeString($vault->getData($this->cypher)); |
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return $this->securedKey; |
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} catch (CryptoException $e) { |
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logger($e->getMessage(), 'EXCEPTION'); |
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} |
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return false; |
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} |
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} else { |
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logger('Cookie verification error', 'ERROR'); |
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} |
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} elseif (($this->securedKey instanceof Key) === true) { |
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return $this->securedKey; |
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} |
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return $this->saveKey() ? $this->securedKey : false; |
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} |
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/** |
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* Guardar una llave de encriptación |
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* |
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* @return Key|false |
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*/ |
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public function saveKey() |
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{ |
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try { |
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if ($this->setCookie($this->sign($this->generateSecuredData()->getSerialized(), $this->cypher)) === false) { |
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logger('Could not generate session\'s key cookie', 'ERROR'); |
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unset($this->securedKey); |
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return false; |
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} |
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logger('Generating a new session\'s key cookie'); |
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return true; |
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} catch (CryptoException $e) { |
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logger($e->getMessage(), 'EXCEPTION'); |
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} |
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return false; |
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} |
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/** |
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* @return Vault |
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* @throws CryptoException |
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* @throws \Defuse\Crypto\Exception\EnvironmentIsBrokenException |
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*/ |
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public function generateSecuredData() |
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{ |
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$this->securedKey = Key::createNewRandomKey(); |
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return (new Vault()) |
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->saveData($this->securedKey->saveToAsciiSafeString(), $this->cypher); |
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} |
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/** |
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* @return Key |
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*/ |
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public function getSecuredKey() |
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{ |
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return $this->securedKey; |
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} |
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} |
nuxsmin /
sysPass
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