<?php

//
//  Copyright (c) 2011, Maths for More S.L. http://www.wiris.com
//  This file is part of WIRIS Plugin.
//
//  WIRIS Plugin is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  any later version.
//
//  WIRIS Plugin is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with WIRIS Plugin. If not, see <http://www.gnu.org/licenses/>.
//

include 'libwiris.php';

if (empty($_GET['formula'])) {
	echo 'Error: no image name has been sended.';
}
else {
	$config = wrs_loadConfig(WRS_CONFIG_FILE);
	$formula = basename($_GET['formula']);
	$filePath = wrs_getCacheDirectory($config) . '/' . $formula;
	
	if (is_file($filePath)) {
		header('Content-Type: image/png');
		readfile($filePath);
	}
	else {
		header('Content-Type: image/gif');
		readfile('../core/cas.gif');
	}
}
?>