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<?php |
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/** |
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* WebHemi. |
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* |
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* PHP version 5.6 |
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* |
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* @copyright 2012 - 2016 Gixx-web (http://www.gixx-web.com) |
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* @license https://opensource.org/licenses/MIT The MIT License (MIT) |
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* |
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* @link http://www.gixx-web.com |
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*/ |
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namespace WebHemi\Application; |
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use RuntimeException; |
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/** |
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* Class SessionManager. |
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* |
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* @codeCoverageIgnore - Not testing session (yet). |
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*/ |
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class SessionManager |
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{ |
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/** @var string */ |
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private $namespace = '_webhemi'; |
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/** @var string */ |
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private $cookiePrefix = 'atsn'; |
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/** @var string */ |
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private $sessionNameSalt = 'WebHemi'; |
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/** @var array */ |
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private $readonly = []; |
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/** @var array */ |
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private $data = []; |
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/** |
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* SessionManager constructor. |
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*/ |
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public function __construct() |
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{ |
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ini_set('session.entropy_file', '/dev/urandom'); |
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ini_set('session.entropy_length', '16'); |
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ini_set('session.hash_function', 'sha256'); |
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ini_set('session.use_only_cookies', '1'); |
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ini_set('session.use_cookies', '1'); |
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ini_set('session.use_trans_sid', '0'); |
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ini_set('session.cookie_httponly', '1'); |
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ini_set('session.save_path', __DIR__.'/../../../data/session/'); |
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} |
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/** |
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* Saves data back to session. |
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*/ |
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public function __destruct() |
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{ |
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$_SESSION[$this->namespace] = $this->data; |
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session_write_close(); |
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} |
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/** |
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* Check whether the session has already been started. |
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* |
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* @return bool |
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*/ |
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private function sessionStarted() |
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{ |
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return session_status() === PHP_SESSION_ACTIVE; |
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} |
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/** |
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* Starts a session. |
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* |
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* @param string $name |
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* @param int $timeOut |
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* @param string $path |
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* @param string $domain |
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* @param bool $secure |
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* @param bool $httpOnly |
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* @return SessionManager |
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*/ |
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public function start($name, $timeOut = 3600, $path = '/', $domain = null, $secure = false, $httpOnly = false) |
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{ |
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if ($this->sessionStarted()) { |
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throw new RuntimeException('Cannot start session. Session is already started.', 1000); |
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} |
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session_name($this->cookiePrefix.'-'.bin2hex($name . $this->sessionNameSalt)); |
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session_set_cookie_params($timeOut, $path, $domain, $secure, $httpOnly); |
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session_start(); |
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if (isset($_SESSION[$this->namespace])) { |
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$this->data = $_SESSION[$this->namespace]; |
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} |
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return $this; |
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} |
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/** |
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* Regenerates session identifier. |
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* |
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* @return SessionManager |
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*/ |
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public function regenerateId() |
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{ |
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if (!$this->sessionStarted()) { |
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throw new RuntimeException('Cannot regenerate session identifier. Session is not started yet.', 1001); |
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} |
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// first save data. |
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$_SESSION[$this->namespace] = $this->data; |
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if (!session_regenerate_id(true)) { |
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throw new RuntimeException('Cannot regenerate session identifier. Unknown error.', 1002); |
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} |
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return $this; |
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} |
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/** |
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* Sets session data. |
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* |
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* @param string $name |
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* @param mixed $value |
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* @param bool $readonly |
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* @throws RuntimeException |
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* @return SessionManager |
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*/ |
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public function set($name, $value, $readonly = false) |
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{ |
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if (!$this->sessionStarted()) { |
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throw new RuntimeException('Cannot set session data. Session is not started yet.', 1003); |
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} |
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if (isset($this->readonly[$name])) { |
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throw new RuntimeException('Unable to overwrite data. Permission denied.', 1004); |
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} |
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if ($readonly) { |
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$this->readonly[$name] = $name; |
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} |
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$this->data[$name] = $value; |
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return $this; |
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} |
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/** |
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* Deletes session data. |
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* |
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* @param string $name |
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* @param bool $forceDelete |
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* @throws RuntimeException |
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* @return SessionManager |
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*/ |
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public function delete($name, $forceDelete = false) |
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{ |
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if (!$this->sessionStarted()) { |
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throw new RuntimeException('Cannot delete session data. Session is not started.', 1005); |
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} |
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if (!$forceDelete && isset($this->readonly[$name])) { |
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throw new RuntimeException('Unable to delete data. Permission denied.', 1006); |
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} |
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// hide errors if data not exists. |
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unset($this->readonly[$name]); |
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unset($this->data[$name]); |
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return $this; |
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} |
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/** |
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* Unlocks readonly data. |
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* |
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* @param string $name |
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* @return SessionManager |
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*/ |
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public function unlock($name) |
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{ |
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if (isset($this->readonly[$name])) { |
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unset($this->readonly[$name]); |
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} |
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return $this; |
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} |
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/** |
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* Returns the internal storage. |
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* |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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return $this->data; |
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} |
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} |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: