tims-todo/application/libraries/MY_Session.php

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2014-08-08 15:41:59 -04:00
<?php
/**
* Extension of Session Library to
* allow preliminary invalidation, and json-encoded session data
*/
class MY_Session extends CI_Session {
/**
* Check if the session is valid
*
* @return bool
*/
public function session_valid()
{
$ip_address = $_SERVER['REMOTE_ADDR'];
$user_agent = $_SERVER['HTTP_USER_AGENT'];
$ip_blacklist = [
'0.0.0.0',
'127.0.0.1'
];
$ua_blacklist = [
'false',
FALSE,
'',
'PHPUnit'
];
if (in_array($ip_address, $ip_blacklist) || in_array($user_agent, $ua_blacklist))
{
$this->sess_destroy();
return FALSE;
}
return TRUE;
}
/**
* Fetch/validate the current session data
*
* @return bool
*/
public function sess_read()
{
return ($this->session_valid()) ? parent::sess_read() : FALSE;
}
/**
* Validate the session before creation
*/
public function sess_create()
{
return ($this->session_valid()) ? parent::sess_create() : FALSE;
}
/**
* Serialize the session data to JSON
*
* @param array $data
* @return string
*/
public function _serialize($data)
{
return json_encode($data);
}
/**
* Unserialize the session data
*
* @param string $data
* @return mixed
*/
public function _unserialize($data)
{
return json_decode($data, TRUE);
}
}
/* End of file MY_Session.php */
/* Location: ./application/libraries/MY_Session.php */