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Revision 1257 Revision 2049
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 *
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 *
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 * An open source application development framework for PHP
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 * An open source application development framework for PHP
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 *
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 *
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 * This content is released under the MIT License (MIT)
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 * This content is released under the MIT License (MIT)
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 *
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 *
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 * Copyright (c) 2014 - 2016, British Columbia Institute of Technology
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 * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
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 *
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * THE SOFTWARE.
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 * THE SOFTWARE.
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 *
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 *
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 * @package	CodeIgniter
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 * @package	CodeIgniter
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 * @author	EllisLab Dev Team
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 * @author	EllisLab Dev Team
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 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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 * @copyright	Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
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 * @copyright	Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
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 * @license	http://opensource.org/licenses/MIT	MIT License
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 * @license	http://opensource.org/licenses/MIT	MIT License
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 * @link	https://codeigniter.com
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 * @link	https://codeigniter.com
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 * @since	Version 3.0.0
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 * @since	Version 3.0.0
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 * @filesource
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 * @filesource
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 */
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 */
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	 * @param	string	$session_data	Serialized session data
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	 * @param	string	$session_data	Serialized session data
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	 * @return	bool
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	 * @return	bool
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	 */
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	 */
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	public function write($session_id, $session_data)
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	public function write($session_id, $session_data)
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	{
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	{
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		if ( ! isset($this->_memcached))
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		if ( ! isset($this->_memcached, $this->_lock_key))
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		{
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		{
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			return $this->_fail();
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			return $this->_fail();
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		}
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		}
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		// Was the ID regenerated?
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		// Was the ID regenerated?
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		elseif ($session_id !== $this->_session_id)
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		elseif ($session_id !== $this->_session_id)
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			$this->_fingerprint = md5('');
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			$this->_fingerprint = md5('');
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			$this->_session_id = $session_id;
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			$this->_session_id = $session_id;
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		}
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		if (isset($this->_lock_key))
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		}
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		{
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			$key = $this->_key_prefix.$session_id;
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			$this->_memcached->replace($this->_lock_key, time(), 300);
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			if ($this->_fingerprint !== ($fingerprint = md5($session_data)))
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			{
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				if ($this->_memcached->set($key, $session_data, $this->_config['expiration']))
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				{
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					$this->_fingerprint = $fingerprint;
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					return $this->_success;
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		$key = $this->_key_prefix.$session_id;
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				}
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				return $this->_fail();
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		$this->_memcached->replace($this->_lock_key, time(), 300);
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			}
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			elseif (
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				$this->_memcached->touch($key, $this->_config['expiration'])
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		if ($this->_fingerprint !== ($fingerprint = md5($session_data)))
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		{
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				OR ($this->_memcached->getResultCode() === Memcached::RES_NOTFOUND && $this->_memcached->set($key, $session_data, $this->_config['expiration']))
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			if ($this->_memcached->set($key, $session_data, $this->_config['expiration']))
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			)
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			{
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				$this->_fingerprint = $fingerprint;
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				return $this->_success;
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			}
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			return $this->_fail();
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		}
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		elseif (
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			$this->_memcached->touch($key, $this->_config['expiration'])
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			OR ($this->_memcached->getResultCode() === Memcached::RES_NOTFOUND && $this->_memcached->set($key, $session_data, $this->_config['expiration']))
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			{
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		)
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				return $this->_success;
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		{
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			}
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			return $this->_success;
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			$this->_lock = FALSE;
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			$this->_lock = FALSE;
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		}
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		}
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		return TRUE;
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		return TRUE;
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	}
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}
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	}
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}