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<?php
class event
{
private static $white_list;
private static function init()
{
event::$white_list = array('10.8.0.2');
}
// execute function $name in file $fname
// if want to call a function of a class, have 2 choice:
// 1. pass an array as $name, put every level of class in it, like:
// A::B::C() should be passed like array("A", "B", "C").
// 2. pass a string with :: directly, it will be automatically
// translated.
// return value will be FALSE on failure, return value of target
// function otherwise. NULL when no return value.
public static function exec_func($fname, $name, $arg)
{
if(!file_exists($fname))
{
return false;
}
require_once($fname);
if(is_string($name) && strpos($name, ":") !== FALSE)
{
$name = preg_split("/::/", $name);
}
if(is_string($name) && !is_callable($name))
{
return false;
}
if(is_array($name) && !is_callable(join($name, "::")))
{
return false;
}
if($arg == NULL)
{
$res = call_user_func($name);
}
else
{
$res = call_user_func_array($name, $arg);
}
if($res === false)
{
return false;
}
return $res;
}
public static function validate_ip()
{
event::init();
if (!empty($_SERVER['HTTP_CLIENT_IP']))
{
$ip=$_SERVER['HTTP_CLIENT_IP'];
}
else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
{
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}
else
{
$ip=$_SERVER['REMOTE_ADDR'];
}
return in_array($ip, event::$white_list);
}
}
?>
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