<?php

$instance = Instance::singleton ();

$file = $instance->getCorePath () . @$_GET ['file'];

$controlMime = array (	'css' 	=> 'text/css',
						'txt' 	=> 'text/plain',
						'jpg' 	=> 'image/jpeg',
						'jpeg' 	=> 'image/pjpeg',
						'gif' 	=> 'image/gif',
						'png' 	=> 'image/png',
						'webp' 	=> 'image/webp',
						'js' 	=> 'text/javascript',
						'ico'	=> 'image/x-icon');

$pieces = explode ('.', $file);

$ext = array_pop ($pieces);

if (!array_key_exists ($ext, $controlMime))
	throw new Exception ('Permission denied for specified file type!');

$file = realpath ($file);

if (!file_exists ($file) || !is_readable ($file))
	throw new Exception ('This file is not available!');

$mimeType = $controlMime [$ext];

header ('Content-Type: '. $mimeType);
header ('Content-Disposition: inline; filename=' . md5 ($file));

if (!$instance->onDebugMode ())
{
	header ('Date: '. date ('D, j M Y G:i:s', filemtime ($file)) .' GMT');
	header ('Expires: '. gmdate ('D, j M Y H:i:s', time () + 15552000) .' GMT');
	header ('Cache-Control: must-revalidate');
	header ('Pragma: cache');
}

if (filesize ($file))
{
	$binary	= fopen ($file, 'rb');

	$buffer = fread ($binary, filesize ($file));

	echo $buffer;
}