Edit - givejs.php

Edit: givejs.php

<?php

//////////////////////////////////////////////////////////////
//===========================================================
// givejs.php
//===========================================================
// SITEPAD
// Inspired by the DESIRE to be the BEST OF ALL
// ----------------------------------------------------------
// Started by: Pulkit Gupta
// Date:	   23rd Jan 2017
// Time:	   23:00 hrs
// Site:	   http://sitepad.com/wordpress (SITEPAD)
// ----------------------------------------------------------
// Please Read the Terms of use at http://sitepad.com/tos
// ----------------------------------------------------------
//===========================================================
// (c)SitePad Team
//===========================================================
//////////////////////////////////////////////////////////////

// Read the file
$data = '';
$self_path = dirname(__FILE__);
$files = array(
		// Admin JS
		'sitepad-editor.js',
		'html2canvas.min.js',
	);

// What files to give		
$give = @$_REQUEST['give'];

if(!empty($give)){
	
	$give = explode(',', $give);
	
	// Check all files are in the supported list
	foreach($give as $file){
		if(in_array($file, $files)){
			$final[md5($file)] = $file;
		}
	}
	
}

// Give all
if(empty($final)){
	$final = $files;
}

foreach($final as $k => $v){
	//echo $k.'<br>';
	$data .= file_get_contents($self_path.'/'.$v)."\n\n";
}

// We are zipping if possible
if(function_exists('ob_gzhandler') && !ini_get('zlib.output_compression')){
	ob_start('ob_gzhandler');
}
		
// Type javascript
header("Content-type: text/javascript; charset: UTF-8");

// Set a zero Mtime
$filetime = filemtime($self_path.'/sitepad-editor.js');

// Cache Control
header("Cache-Control: must-revalidate");

// Checking if the client is validating his cache and if it is current.
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && (@strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $filetime)) {
	
	// Client's cache IS current, so we just respond '304 Not Modified'.
	header('Last-Modified: '.gmdate('D, d M Y H:i:s', $filetime).' GMT', true, 304);
	
	return;
	
}else{
	
	// Image not cached or cache outdated, we respond '200 OK' and output the image.
	header('Last-Modified: '.gmdate('D, d M Y H:i:s', $filetime).' GMT', true, 200);
	
}

echo $data;

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