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<?php |
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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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* @since 1.2.0 |
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* @license http://www.opensource.org/licenses/mit-license.php MIT License |
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*/ |
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namespace Cake\Controller\Component; |
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use Cake\Controller\Component; |
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use Cake\I18n\Time; |
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use Cake\Network\Request; |
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use Cake\Network\Response; |
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use Cake\Utility\CookieCryptTrait; |
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use Cake\Utility\Hash; |
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use Cake\Utility\Security; |
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/** |
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* Cookie Component. |
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* |
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* Provides enhanced cookie handling features for use in the controller layer. |
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* In addition to the basic features offered be Cake\Network\Response, this class lets you: |
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* |
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* - Create and read encrypted cookies. |
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* - Store non-scalar data. |
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* - Use hash compatible syntax to read/write/delete values. |
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* |
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* @link http://book.cakephp.org/3.0/en/controllers/components/cookie.html |
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*/ |
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class CookieComponent extends Component |
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{ |
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use CookieCryptTrait; |
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/** |
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* Default config |
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* |
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* - `expires` - How long the cookies should last for. Defaults to 1 month. |
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* - `path` - The path on the server in which the cookie will be available on. |
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* If path is set to '/foo/', the cookie will only be available within the |
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* /foo/ directory and all sub-directories such as /foo/bar/ of domain. |
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* The default value is base path of app. For e.g. if your app is running |
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* under a subfolder "cakeapp" of document root the path would be "/cakeapp/" |
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* else it would be "/". |
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* - `domain` - The domain that the cookie is available. To make the cookie |
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* available on all subdomains of example.com set domain to '.example.com'. |
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* - `secure` - Indicates that the cookie should only be transmitted over a |
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* secure HTTPS connection. When set to true, the cookie will only be set if |
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* a secure connection exists. |
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* - `key` - Encryption key used when encrypted cookies are enabled. Defaults to Security.salt. |
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* - `httpOnly` - Set to true to make HTTP only cookies. Cookies that are HTTP only |
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* are not accessible in JavaScript. Default false. |
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* - `encryption` - Type of encryption to use. Defaults to 'aes'. |
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* |
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* @var array |
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*/ |
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protected $_defaultConfig = [ |
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'path' => null, |
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'domain' => '', |
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'secure' => false, |
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'key' => null, |
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'httpOnly' => false, |
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'encryption' => 'aes', |
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'expires' => '+1 month', |
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]; |
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/** |
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* Config specific to a given top level key name. |
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* |
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* The values in this array are merged with the general config |
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* to generate the configuration for a given top level cookie name. |
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* |
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* @var array |
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*/ |
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protected $_keyConfig = []; |
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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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* @var string |
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*/ |
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protected $_values = []; |
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/** |
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* A map of keys that have been loaded. |
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* |
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* Since CookieComponent lazily reads cookie data, |
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* we need to track which cookies have been read to account for |
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* read, delete, read patterns. |
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* |
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* @var array |
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*/ |
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protected $_loaded = []; |
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/** |
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* A reference to the Controller's Cake\Network\Response object |
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* |
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* @var \Cake\Network\Response |
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*/ |
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protected $_response = null; |
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/** |
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* Initialize config data and properties. |
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* |
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* @param array $config The config data. |
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* @return void |
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*/ |
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public function initialize(array $config) |
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{ |
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if (!$this->_config['key']) { |
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$this->config('key', Security::salt()); |
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} |
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$controller = $this->_registry->getController(); |
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if ($controller !== null) { |
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$this->_response =& $controller->response; |
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} |
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if ($controller === null) { |
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$this->request = Request::createFromGlobals(); |
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$this->_response = new Response(); |
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} |
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if (empty($this->_config['path'])) { |
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$this->config('path', $this->request->webroot); |
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} |
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} |
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/** |
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* Set the configuration for a specific top level key. |
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* |
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* ### Examples: |
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* |
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* Set a single config option for a key: |
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* |
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* ``` |
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* $this->Cookie->configKey('User', 'expires', '+3 months'); |
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* ``` |
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* |
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* Set multiple options: |
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* |
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* ``` |
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* $this->Cookie->configKey('User', [ |
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* 'expires', '+3 months', |
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* 'httpOnly' => true, |
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* ]); |
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* ``` |
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* |
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* @param string $keyname The top level keyname to configure. |
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* @param null|string|array $option Either the option name to set, or an array of options to set, |
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* or null to read config options for a given key. |
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* @param string|null $value Either the value to set, or empty when $option is an array. |
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* @return array|null |
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*/ |
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public function configKey($keyname, $option = null, $value = null) |
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{ |
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if ($option === null) { |
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$default = $this->_config; |
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$local = isset($this->_keyConfig[$keyname]) ? $this->_keyConfig[$keyname] : []; |
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return $local + $default; |
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} |
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if (!is_array($option)) { |
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$option = [$option => $value]; |
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} |
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$this->_keyConfig[$keyname] = $option; |
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return null; |
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} |
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/** |
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* Events supported by this component. |
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* |
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* @return array |
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*/ |
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public function implementedEvents() |
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{ |
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return []; |
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} |
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/** |
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* Write a value to the response cookies. |
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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 $value Value |
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* @return void |
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*/ |
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public function write($key, $value = null) |
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{ |
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if (!is_array($key)) { |
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$key = [$key => $value]; |
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} |
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$keys = []; |
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foreach ($key as $name => $value) { |
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$this->_load($name); |
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$this->_values = Hash::insert($this->_values, $name, $value); |
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$parts = explode('.', $name); |
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$keys[] = $parts[0]; |
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} |
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foreach ($keys as $name) { |
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$this->_write($name, $this->_values[$name]); |
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} |
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} |
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/** |
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* Read the value of key path from request cookies. |
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* |
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* This method will also allow you to read cookies that have been written in this |
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* request, but not yet sent to the client. |
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* |
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* @param string|null $key Key of the value to be obtained. |
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* @return string or null, value for specified key |
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*/ |
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public function read($key = null) |
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{ |
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$this->_load($key); |
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return Hash::get($this->_values, $key); |
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} |
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/** |
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* Load the cookie data from the request and response objects. |
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* |
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* Based on the configuration data, cookies will be decrypted. When cookies |
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* contain array data, that data will be expanded. |
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* |
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* @param string|array $key The key to load. |
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* @return void |
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*/ |
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protected function _load($key) |
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{ |
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$parts = explode('.', $key); |
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$first = array_shift($parts); |
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if (isset($this->_loaded[$first])) { |
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return; |
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} |
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if (!isset($this->request->cookies[$first])) { |
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return; |
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} |
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$cookie = $this->request->cookies[$first]; |
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$config = $this->configKey($first); |
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$this->_loaded[$first] = true; |
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$this->_values[$first] = $this->_decrypt($cookie, $config['encryption']); |
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} |
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/** |
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* Returns true if given key is set in the cookie. |
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* |
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* @param string|null $key Key to check for |
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* @return bool True if the key exists |
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*/ |
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public function check($key = null) |
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{ |
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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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* 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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* Deleting a top level key will delete all keys nested within that key. |
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* For example deleting the `User` key, will also delete `User.email`. |
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* |
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* @param string $key Key of the value to be deleted |
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* @return void |
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*/ |
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public function delete($key) |
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{ |
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$this->_load($key); |
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$this->_values = Hash::remove($this->_values, $key); |
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$parts = explode('.', $key); |
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$top = $parts[0]; |
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if (isset($this->_values[$top])) { |
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$this->_write($top, $this->_values[$top]); |
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} else { |
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$this->_delete($top); |
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} |
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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, $value) |
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{ |
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$config = $this->configKey($name); |
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$expires = new Time($config['expires']); |
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$this->_response->cookie([ |
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'name' => $name, |
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'value' => $this->_encrypt($value, $config['encryption']), |
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'expire' => $expires->format('U'), |
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'path' => $config['path'], |
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'domain' => $config['domain'], |
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'secure' => $config['secure'], |
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'httpOnly' => $config['httpOnly'] |
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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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* This is only done once all values in a cookie key have been |
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* removed with delete. |
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* |
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328
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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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|
|
|
{ |
|
333
|
|
|
$config = $this->configKey($name); |
|
334
|
|
|
$expires = new Time('now'); |
|
335
|
|
|
|
|
336
|
|
|
$this->_response->cookie([ |
|
337
|
|
|
'name' => $name, |
|
338
|
|
|
'value' => '', |
|
339
|
|
|
'expire' => $expires->format('U') - 42000, |
|
340
|
|
|
'path' => $config['path'], |
|
341
|
|
|
'domain' => $config['domain'], |
|
342
|
|
|
'secure' => $config['secure'], |
|
343
|
|
|
'httpOnly' => $config['httpOnly'] |
|
344
|
|
|
]); |
|
345
|
|
|
} |
|
346
|
|
|
|
|
347
|
|
|
/** |
|
348
|
|
|
* Returns the encryption key to be used. |
|
349
|
|
|
* |
|
350
|
|
|
* @return string |
|
351
|
|
|
*/ |
|
352
|
|
|
protected function _getCookieEncryptionKey() |
|
353
|
|
|
{ |
|
354
|
|
|
return $this->_config['key']; |
|
355
|
|
|
} |
|
356
|
|
|
} |
|
357
|
|
|
|
If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.