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<?php
/**
*
* @package \phpbb\request\request
* @copyright (c) 2010 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
namespace phpbb\request;
/**
* Replacement for a superglobal (like $_GET or $_POST) which calls
* trigger_error on all operations but isset, overloads the [] operator with SPL.
*
* @package \phpbb\request\request
*/
class deactivated_super_global implements \ArrayAccess, \Countable, \IteratorAggregate
{
/**
* @var string Holds the name of the superglobal this is replacing.
*/
private $name;
/**
* @var \phpbb\request\request_interface::POST|GET|REQUEST|COOKIE Super global constant.
*/
private $super_global;
/**
* @var \phpbb\request\request_interface The request class instance holding the actual request data.
*/
private $request;
/**
* Constructor generates an error message fitting the super global to be used within the other functions.
*
* @param \phpbb\request\request_interface $request A request class instance holding the real super global data.
* @param string $name Name of the super global this is a replacement for - e.g. '_GET'.
* @param \phpbb\request\request_interface::POST|GET|REQUEST|COOKIE $super_global The variable's super global constant.
*/
public function __construct(\phpbb\request\request_interface $request, $name, $super_global)
{
$this->request = $request;
$this->name = $name;
$this->super_global = $super_global;
}
/**
* Calls trigger_error with the file and line number the super global was used in.
*/
private function error()
{
$file = '';
$line = 0;
$message = 'Illegal use of $' . $this->name . '. You must use the request class or request_var() to access input data. Found in %s on line %d. This error message was generated by deactivated_super_global.';
$backtrace = debug_backtrace();
if (isset($backtrace[1]))
{
$file = $backtrace[1]['file'];
$line = $backtrace[1]['line'];
}
trigger_error(sprintf($message, $file, $line), E_USER_ERROR);
}
/**
* Redirects isset to the correct request class call.
*
* @param string $offset The key of the super global being accessed.
*
* @return bool Whether the key on the super global exists.
*/
public function offsetExists($offset)
{
return $this->request->is_set($offset, $this->super_global);
}
/**#@+
* Part of the \ArrayAccess implementation, will always result in a FATAL error.
*/
public function offsetGet($offset)
{
$this->error();
}
public function offsetSet($offset, $value)
{
$this->error();
}
public function offsetUnset($offset)
{
$this->error();
}
/**#@-*/
/**
* Part of the \Countable implementation, will always result in a FATAL error
*/
public function count()
{
$this->error();
}
/**
* Part of the Traversable/IteratorAggregate implementation, will always result in a FATAL error
*/
public function getIterator()
{
$this->error();
}
}
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