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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
  13  
  14  /**
  15   * Adds basic `SessionUpdateTimestampHandlerInterface` behaviors to another `SessionHandlerInterface`.
  16   *
  17   * @author Nicolas Grekas <p@tchwork.com>
  18   */
  19  class StrictSessionHandler extends AbstractSessionHandler
  20  {
  21      private $handler;
  22      private $doDestroy;
  23  
  24      public function __construct(\SessionHandlerInterface $handler)
  25      {
  26          if ($handler instanceof \SessionUpdateTimestampHandlerInterface) {
  27              throw new \LogicException(sprintf('"%s" is already an instance of "SessionUpdateTimestampHandlerInterface", you cannot wrap it with "%s".', \get_class($handler), self::class));
  28          }
  29  
  30          $this->handler = $handler;
  31      }
  32  
  33      /**
  34       * {@inheritdoc}
  35       */
  36      public function open($savePath, $sessionName)
  37      {
  38          parent::open($savePath, $sessionName);
  39  
  40          return $this->handler->open($savePath, $sessionName);
  41      }
  42  
  43      /**
  44       * {@inheritdoc}
  45       */
  46      protected function doRead($sessionId)
  47      {
  48          return $this->handler->read($sessionId);
  49      }
  50  
  51      /**
  52       * {@inheritdoc}
  53       */
  54      public function updateTimestamp($sessionId, $data)
  55      {
  56          return $this->write($sessionId, $data);
  57      }
  58  
  59      /**
  60       * {@inheritdoc}
  61       */
  62      protected function doWrite($sessionId, $data)
  63      {
  64          return $this->handler->write($sessionId, $data);
  65      }
  66  
  67      /**
  68       * {@inheritdoc}
  69       */
  70      public function destroy($sessionId)
  71      {
  72          $this->doDestroy = true;
  73          $destroyed = parent::destroy($sessionId);
  74  
  75          return $this->doDestroy ? $this->doDestroy($sessionId) : $destroyed;
  76      }
  77  
  78      /**
  79       * {@inheritdoc}
  80       */
  81      protected function doDestroy($sessionId)
  82      {
  83          $this->doDestroy = false;
  84  
  85          return $this->handler->destroy($sessionId);
  86      }
  87  
  88      /**
  89       * {@inheritdoc}
  90       */
  91      public function close()
  92      {
  93          return $this->handler->close();
  94      }
  95  
  96      /**
  97       * @return bool
  98       */
  99      public function gc($maxlifetime)
 100      {
 101          return $this->handler->gc($maxlifetime);
 102      }
 103  }