<?php
namespace wcf\page;
use \wcf\system\exception\IllegalLinkException;
use \wcf\system\WCF;

/**
 * Shows information about Tims chat.
 *
 * @author 	Tim Düsterhus
 * @copyright	2010-2012 Tim Düsterhus
 * @license	Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
 * @package	be.bastelstu.wcf.chat
 * @subpackage	page
 */
class ChatCopyrightPage extends AbstractPage {
	/**
	 * @see \wcf\page\AbstractPage::$neededModules
	 */
	public $neededModules = array('CHAT_ACTIVE');
	
	/**
	 * @see \wcf\page\AbstractPage::$neededPermissions
	 */
	public $neededPermissions = array();
	
	/**
	 * shortcut for the active request
	 * @see wcf\system\request\Request::getRequestObject()
	 */
	public $request = null;
	
	/**
	 * Disallows direct access.
	 * 
	 * @see wcf\page\IPage::__run()
	 */
	public function __run() {
		if (($this->request = \wcf\system\request\RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
		
		parent::__run();
	}
	
	/**
	 * @see	\wcf\page\IPage::readParameters()
	 */
	public function readParameters() {
		//     ###
		//   ##   ##
		//  #       #
		//  # ##### #
		// # #     # #
		// # # * * # #
		// # #     # #
		// #  #   #  #
		//  #  ###  #
		//  #       #
		//   #######
		//   # # # #
		//   # # # #
		//   # # # #
		
		if (isset($_GET['sheep'])) $this->useTemplate = false;
	}
	
	/**
	 * @see	\wcf\page\IPage::show()
	 */
	public function show() {
		// guests are not supported
		if (!WCF::getUser()->userID) {
			throw new \wcf\system\exception\PermissionDeniedException();
		}
		
		parent::show();
		if ($this->useTemplate) exit;
		@header('Content-type: image/png');
		\wcf\util\HeaderUtil::sendNoCacheHeaders();
		$images = explode("\n\n", file_get_contents(__FILE__, null, null, __COMPILER_HALT_OFFSET__+2));
		echo base64_decode($images[array_rand($images)]);
		exit;
	}
}
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