public function __construct()
{
parent::__construct();
$this->db->where('remember_me', FALSE)->where('UNIX_TIMESTAMP(last_activity) <', time() - strtoseconds($this->config->nf_cookie_expire))->delete('nf_sessions');
$this->_ip_address = isset($_SERVER['HTTP_X_REAL_IP']) ? $_SERVER['HTTP_X_REAL_IP'] : $_SERVER['REMOTE_ADDR'];
$this->_host_name = utf8_string(gethostbyaddr($this->_ip_address));
if (isset($_COOKIE[$this->config->nf_cookie_name]) && $this->_check_cookie($cookie = $_COOKIE[$this->config->nf_cookie_name], $last_activity)) {
if (strtotime($this->config->nf_cookie_expire, $last_activity) < time()) {
$this->_session_id();
} else {
$this->_session_id = $cookie;
}
$this->db->where('session_id', $cookie)->update('nf_sessions', array('session_id' => $this->_session_id, 'ip_address' => $this->_ip_address, 'host_name' => $this->_host_name, 'last_activity' => now()));
if (!is_null($time_zone = $this('session', 'time_zone'))) {
set_time_zone($time_zone);
$this->db->update_time_zone();
}
} else {
if (!is_asset() && !$this->config->ajax_url && !$this->config->ajax_header && $_SERVER['REQUEST_METHOD'] != 'OPTIONS') {
$this->_session_id();
$crawler = is_crawler();
if ($crawler !== FALSE) {
$this->db->insert('nf_crawlers', array('name' => $crawler, 'path' => $this->config->request_url));
}
$this->db->insert('nf_sessions', array('session_id' => $this->_session_id, 'ip_address' => $this->_ip_address, 'host_name' => $this->_host_name, 'is_crawler' => $crawler !== FALSE));
$this->_user_data['session']['date'] = time();
$this->_user_data['session']['javascript'] = FALSE;
$this->_user_data['session']['referer'] = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '';
$this->_user_data['session']['user_agent'] = $_SERVER['HTTP_USER_AGENT'];
}
}
statistics('nf_sessions_max_simultaneous', $this->_sessions = $this->db->select('COUNT(DISTINCT IFNULL(user_id, session_id))')->from('nf_sessions')->where('last_activity > DATE_SUB(NOW(), INTERVAL 5 MINUTE)')->where('is_crawler', FALSE)->row(), function ($a, $b) {
return $a > $b;
});
}
/**
* enable_tmz_support() - switch to custom time zone
*
* @return - returns true (successful) or false (failed)
*/
function enable_tmz_support() {
return (set_time_zone(CACTI_CUSTOM_TIME_ZONE)) ? true : false;
}
