mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2025-01-19 02:56:15 +00:00
005a7d841d
With Security supporting AES encryption it is also ideal to have AES compatible cookies. Refactor and simplify code. Dynamic invocation of static method is a bit obtuse and the various methods don't all have the same arguments.
557 lines
14 KiB
PHP
557 lines
14 KiB
PHP
<?php
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/**
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* Cookie Component
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*
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* PHP 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Controller.Component
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* @since CakePHP(tm) v 1.2.0.4213
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('Component', 'Controller');
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App::uses('Security', 'Utility');
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App::uses('Hash', 'Utility');
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/**
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* Cookie Component.
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*
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* Cookie handling for the controller.
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*
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* @package Cake.Controller.Component
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* @link http://book.cakephp.org/2.0/en/core-libraries/components/cookie.html
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*
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*/
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class CookieComponent extends Component {
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/**
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* The name of the cookie.
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*
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* Overridden with the controller beforeFilter();
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* $this->Cookie->name = 'CookieName';
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*
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* @var string
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*/
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public $name = 'CakeCookie';
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/**
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* The time a cookie will remain valid.
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*
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* Can be either integer Unix timestamp or a date string.
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*
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* Overridden with the controller beforeFilter();
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* $this->Cookie->time = '5 Days';
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*
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* @var mixed
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*/
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public $time = null;
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/**
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* Cookie path.
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*
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* Overridden with the controller beforeFilter();
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* $this->Cookie->path = '/';
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*
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* The path on the server in which the cookie will be available on.
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* If public $cookiePath is set to '/foo/', the cookie will only be available
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* within the /foo/ directory and all sub-directories such as /foo/bar/ of domain.
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* The default value is the entire domain.
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*
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* @var string
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*/
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public $path = '/';
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/**
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* Domain path.
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*
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* The domain that the cookie is available.
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*
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* Overridden with the controller beforeFilter();
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* $this->Cookie->domain = '.example.com';
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*
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* To make the cookie available on all subdomains of example.com.
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* Set $this->Cookie->domain = '.example.com'; in your controller beforeFilter
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*
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* @var string
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*/
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public $domain = '';
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/**
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* Secure HTTPS only cookie.
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*
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* Overridden with the controller beforeFilter();
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* $this->Cookie->secure = true;
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*
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* Indicates that the cookie should only be transmitted over a secure HTTPS connection.
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* When set to true, the cookie will only be set if a secure connection exists.
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*
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* @var boolean
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*/
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public $secure = false;
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/**
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* Encryption key.
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*
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* Overridden with the controller beforeFilter();
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* $this->Cookie->key = 'SomeRandomString';
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*
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* @var string
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*/
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public $key = null;
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/**
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* HTTP only cookie
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*
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* Set to true to make HTTP only cookies. Cookies that are HTTP only
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* are not accessible in Javascript.
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*
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* @var boolean
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*/
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public $httpOnly = false;
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/**
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* Values stored in the cookie.
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*
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* Accessed in the controller using $this->Cookie->read('Name.key');
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*
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* @see CookieComponent::read();
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* @var string
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*/
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protected $_values = array();
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/**
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* Type of encryption to use.
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*
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* Currently two methods are available: cipher and rijndael
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* Defaults to Security::cipher(). Cipher is horribly insecure and only
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* the default because of backwards compatibility. In new applications you should
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* always change this to 'aes' or 'rijndael'.
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*
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* @var string
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*/
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protected $_type = 'cipher';
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/**
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* Used to reset cookie time if $expire is passed to CookieComponent::write()
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*
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* @var string
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*/
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protected $_reset = null;
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/**
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* Expire time of the cookie
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*
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* This is controlled by CookieComponent::time;
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*
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* @var string
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*/
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protected $_expires = 0;
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/**
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* A reference to the Controller's CakeResponse object
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*
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* @var CakeResponse
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*/
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protected $_response = null;
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/**
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* Constructor
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*
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* @param ComponentCollection $collection A ComponentCollection for this component
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* @param array $settings Array of settings.
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*/
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public function __construct(ComponentCollection $collection, $settings = array()) {
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$this->key = Configure::read('Security.salt');
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parent::__construct($collection, $settings);
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if (isset($this->time)) {
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$this->_expire($this->time);
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}
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$controller = $collection->getController();
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if ($controller && isset($controller->response)) {
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$this->_response = $controller->response;
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} else {
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$this->_response = new CakeResponse();
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}
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}
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/**
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* Start CookieComponent for use in the controller
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*
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* @param Controller $controller
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* @return void
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*/
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public function startup(Controller $controller) {
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$this->_expire($this->time);
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$this->_values[$this->name] = array();
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}
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/**
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* Write a value to the $_COOKIE[$key];
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*
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* Optional [Name.], required key, optional $value, optional $encrypt, optional $expires
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* $this->Cookie->write('[Name.]key, $value);
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*
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* By default all values are encrypted.
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* You must pass $encrypt false to store values in clear test
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*
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* You must use this method before any output is sent to the browser.
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* Failure to do so will result in header already sent errors.
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*
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* @param string|array $key Key for the value
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* @param mixed $value Value
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* @param boolean $encrypt Set to true to encrypt value, false otherwise
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* @param integer|string $expires Can be either the number of seconds until a cookie
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* expires, or a strtotime compatible time offset.
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* @return void
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* @link http://book.cakephp.org/2.0/en/core-libraries/components/cookie.html#CookieComponent::write
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*/
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public function write($key, $value = null, $encrypt = true, $expires = null) {
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if (empty($this->_values[$this->name])) {
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$this->read();
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}
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if ($encrypt === null) {
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$encrypt = true;
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}
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$this->_encrypted = $encrypt;
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$this->_expire($expires);
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if (!is_array($key)) {
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$key = array($key => $value);
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}
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foreach ($key as $name => $value) {
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if (strpos($name, '.') === false) {
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$this->_values[$this->name][$name] = $value;
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$this->_write("[$name]", $value);
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} else {
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$names = explode('.', $name, 2);
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if (!isset($this->_values[$this->name][$names[0]])) {
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$this->_values[$this->name][$names[0]] = array();
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}
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$this->_values[$this->name][$names[0]] = Hash::insert($this->_values[$this->name][$names[0]], $names[1], $value);
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$this->_write('[' . implode('][', $names) . ']', $value);
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}
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}
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$this->_encrypted = true;
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}
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/**
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* Read the value of the $_COOKIE[$key];
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*
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* Optional [Name.], required key
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* $this->Cookie->read(Name.key);
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*
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* @param string $key Key of the value to be obtained. If none specified, obtain map key => values
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* @return string or null, value for specified key
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* @link http://book.cakephp.org/2.0/en/core-libraries/components/cookie.html#CookieComponent::read
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*/
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public function read($key = null) {
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if (empty($this->_values[$this->name]) && isset($_COOKIE[$this->name])) {
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$this->_values[$this->name] = $this->_decrypt($_COOKIE[$this->name]);
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}
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if (empty($this->_values[$this->name])) {
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$this->_values[$this->name] = array();
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}
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if ($key === null) {
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return $this->_values[$this->name];
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}
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if (strpos($key, '.') !== false) {
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$names = explode('.', $key, 2);
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$key = $names[0];
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}
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if (!isset($this->_values[$this->name][$key])) {
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return null;
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}
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if (!empty($names[1])) {
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return Hash::get($this->_values[$this->name][$key], $names[1]);
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}
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return $this->_values[$this->name][$key];
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}
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/**
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* Returns true if given variable is set in cookie.
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*
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* @param string $var Variable name to check for
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* @return boolean True if variable is there
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*/
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public function check($key = null) {
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if (empty($key)) {
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return false;
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}
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return $this->read($key) !== null;
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}
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/**
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* Delete a cookie value
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*
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* Optional [Name.], required key
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* $this->Cookie->read('Name.key);
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*
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* You must use this method before any output is sent to the browser.
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* Failure to do so will result in header already sent errors.
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*
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* @param string $key Key of the value to be deleted
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* @return void
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* @link http://book.cakephp.org/2.0/en/core-libraries/components/cookie.html#CookieComponent::delete
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*/
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public function delete($key) {
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if (empty($this->_values[$this->name])) {
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$this->read();
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}
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if (strpos($key, '.') === false) {
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if (isset($this->_values[$this->name][$key]) && is_array($this->_values[$this->name][$key])) {
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foreach ($this->_values[$this->name][$key] as $idx => $val) {
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$this->_delete("[$key][$idx]");
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}
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}
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$this->_delete("[$key]");
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unset($this->_values[$this->name][$key]);
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return;
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}
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$names = explode('.', $key, 2);
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if (isset($this->_values[$this->name][$names[0]])) {
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$this->_values[$this->name][$names[0]] = Hash::remove($this->_values[$this->name][$names[0]], $names[1]);
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}
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$this->_delete('[' . implode('][', $names) . ']');
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}
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/**
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* Destroy current cookie
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*
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* You must use this method before any output is sent to the browser.
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* Failure to do so will result in header already sent errors.
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*
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* @return void
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* @link http://book.cakephp.org/2.0/en/core-libraries/components/cookie.html#CookieComponent::destroy
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*/
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public function destroy() {
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if (isset($_COOKIE[$this->name])) {
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$this->_values[$this->name] = $this->_decrypt($_COOKIE[$this->name]);
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}
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foreach ($this->_values[$this->name] as $name => $value) {
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if (is_array($value)) {
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foreach ($value as $key => $val) {
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unset($this->_values[$this->name][$name][$key]);
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$this->_delete("[$name][$key]");
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}
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}
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unset($this->_values[$this->name][$name]);
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$this->_delete("[$name]");
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}
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}
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/**
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* Will allow overriding default encryption method. Use this method
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* in ex: AppController::beforeFilter() before you have read or
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* written any cookies.
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*
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* @param string $type Encryption method
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* @return void
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*/
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public function type($type = 'cipher') {
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$availableTypes = array(
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'cipher',
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'rijndael',
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'aes'
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);
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if (!in_array($type, $availableTypes)) {
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trigger_error(__d('cake_dev', 'You must use cipher, rijndael or aes for cookie encryption type'), E_USER_WARNING);
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$type = 'cipher';
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}
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$this->_type = $type;
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}
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/**
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* Set the expire time for a session variable.
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*
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* Creates a new expire time for a session variable.
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* $expire can be either integer Unix timestamp or a date string.
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*
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* Used by write()
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* CookieComponent::write(string, string, boolean, 8400);
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* CookieComponent::write(string, string, boolean, '5 Days');
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*
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* @param integer|string $expires Can be either Unix timestamp, or date string
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* @return integer Unix timestamp
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*/
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protected function _expire($expires = null) {
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if ($expires === null) {
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return $this->_expires;
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}
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$this->_reset = $this->_expires;
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if (!$expires) {
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return $this->_expires = 0;
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}
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$now = new DateTime();
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if (is_int($expires) || is_numeric($expires)) {
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return $this->_expires = $now->format('U') + intval($expires);
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}
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$now->modify($expires);
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return $this->_expires = $now->format('U');
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}
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/**
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* Set cookie
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*
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* @param string $name Name for cookie
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* @param string $value Value for cookie
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* @return void
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*/
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protected function _write($name, $value) {
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$this->_response->cookie(array(
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'name' => $this->name . $name,
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'value' => $this->_encrypt($value),
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'expire' => $this->_expires,
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'path' => $this->path,
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'domain' => $this->domain,
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'secure' => $this->secure,
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'httpOnly' => $this->httpOnly
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));
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if (!empty($this->_reset)) {
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$this->_expires = $this->_reset;
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$this->_reset = null;
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}
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}
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/**
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* Sets a cookie expire time to remove cookie value
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*
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* @param string $name Name of cookie
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* @return void
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*/
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protected function _delete($name) {
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$this->_response->cookie(array(
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'name' => $this->name . $name,
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'value' => '',
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'expire' => time() - 42000,
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'path' => $this->path,
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'domain' => $this->domain,
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'secure' => $this->secure,
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'httpOnly' => $this->httpOnly
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));
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}
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/**
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* Encrypts $value using public $type method in Security class
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*
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* @param string $value Value to encrypt
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* @return string Encoded values
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*/
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protected function _encrypt($value) {
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if (is_array($value)) {
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$value = $this->_implode($value);
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}
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if (!$this->_encrypted) {
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return $value;
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}
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$prefix = "Q2FrZQ==.";
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if ($this->_type === 'rijndael') {
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$cipher = Security::rijndael($value, $this->key, 'encrypt');
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}
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if ($this->_type === 'cipher') {
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$cipher = Security::cipher($value, $this->key);
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}
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if ($this->_type === 'aes') {
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$cipher = Security::encrypt($value, $this->key);
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}
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return $prefix . base64_encode($cipher);
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}
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/**
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* Decrypts $value using public $type method in Security class
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*
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* @param array $values Values to decrypt
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* @return string decrypted string
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*/
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protected function _decrypt($values) {
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$decrypted = array();
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$type = $this->_type;
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foreach ((array)$values as $name => $value) {
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if (is_array($value)) {
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foreach ($value as $key => $val) {
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$decrypted[$name][$key] = $this->_decode($val);
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}
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} else {
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$decrypted[$name] = $this->_decode($value);
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}
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}
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return $decrypted;
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}
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/**
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* Decodes and decrypts a single value.
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*
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* @param string $value The value to decode & decrypt.
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* @return string Decoded value.
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*/
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protected function _decode($value) {
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$prefix = 'Q2FrZQ==.';
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$pos = strpos($value, $prefix);
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if ($pos === false) {
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return $this->_explode($value);
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}
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$value = base64_decode(substr($value, strlen($prefix)));
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if ($this->_type === 'rijndael') {
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$plain = Security::rijndael($value, $this->key, 'decrypt');
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}
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if ($this->_type === 'cipher') {
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$plain = Security::cipher($value, $this->key);
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}
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if ($this->_type === 'aes') {
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$plain = Security::decrypt($value, $this->key);
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}
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return $this->_explode($plain);
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}
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/**
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* Implode method to keep keys are multidimensional arrays
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*
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* @param array $array Map of key and values
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* @return string A json encoded string.
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*/
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protected function _implode(array $array) {
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return json_encode($array);
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}
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/**
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* Explode method to return array from string set in CookieComponent::_implode()
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* Maintains reading backwards compatibility with 1.x CookieComponent::_implode().
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*
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* @param string $string A string containing JSON encoded data, or a bare string.
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* @return array Map of key and values
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*/
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protected function _explode($string) {
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$first = substr($string, 0, 1);
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if ($first === '{' || $first === '[') {
|
|
$ret = json_decode($string, true);
|
|
return ($ret) ? $ret : $string;
|
|
}
|
|
$array = array();
|
|
foreach (explode(',', $string) as $pair) {
|
|
$key = explode('|', $pair);
|
|
if (!isset($key[1])) {
|
|
return $key[0];
|
|
}
|
|
$array[$key[0]] = $key[1];
|
|
}
|
|
return $array;
|
|
}
|
|
}
|