downloadhandler.php | searchcode

/js/ajax/downloads/downloadhandler.php

https://github.com/Tirsofreelance/snippets
PHP | 99 lines | 63 code | 19 blank | 17 comment | 5 complexity | 4da69242337213d9aa0cb26de49f58fe MD5 | raw file

<?php

// get filename

$file = $_GET['file'];

$fileexists = false;



if (strlen($file) > 0) {



	// find file location from root

	$p = strpos($file, '://');

	if ($p > 0) $file = substr($file, strpos($file, '/', $p+3)+1);



	// find physical file location

	$filepath = str_repeat('../', substr_count($_SERVER["PHP_SELF"], '/')-1).$file;

	$filepath = realpath($filepath);



	// find filename

	$filename = substr(strrchr($file,'/'),1);



	// find extension

	$ext = strtolower(substr(strrchr($file,'.'),1));



	// does file exist

	$fileexists = file_exists($filepath);

	

	// determine mime type

	switch($ext)

	{

		case "mp3": $mime="audio/mp3"; break;

		case "wav": $mime="audio/x-wav"; break;

		case "wma": $mime="audio/x-ms-wma"; break;

		case "ogg": $mime="audio/x-ogg"; break;

		case "mid": $mime="audio/x-midi"; break;

		case "mpg": $mime="video/mpeg"; break;

		case "mpeg": $mime="video/mpeg"; break;

		case "avi": $mime="video/x-msvideo"; break;

		case "wmv": $mime="video/x-ms-wmv"; break;

		case "mov": $mime="video/quicktime"; break;

		case "qt": $mime="video/quicktime"; break;

		

		case "pdf": $mime="application/pdf"; break;

		case "doc": $mime="application/msword"; break;

		case "xls": $mime="application/ms-excel"; break;

		case "ppt": $mime="application/ms-powerpoint"; break;

		case "txt": $mime="text/plain"; break;

		case "rtf": $mime="application/rtf"; break;

		

		case "exe": $mime="application/octet-stream"; break;

		case "msi": $mime="application/octet-stream"; break;

		case "iso": $mime="application/octet-stream"; break;

		case "zip": $mime="application/zip"; break;

		case "tar": $mime="application/x-tar"; break;

		case "gz": $mime="application/x-gzip"; break;

		case "rar": $mime="application/rar"; break;

		case "lha": $mime="application/lha"; break;

		case "jar": $mime="application/x-java-archive"; break;



		default: $mime="application/force-download"; break;

	}



}



/*

// debug

echo("<p>file: $file</p>");

echo("<p>filepath: $filepath</p>");

echo("<p>filename: $filename</p>");

echo("<p>ext: $ext</p>");

echo("<p>fileexists: $fileexists</p>");

echo("<p>mime: $mime</p>");

*/



if ($fileexists) {



	if(ini_get('zlib.output_compression')) ini_set('zlib.output_compression', 'Off');

	header('Pragma: public');

	header('Expires: 0');

	header('Cache-Control: must-revalidate, post-check=0, pre-check=0');

	header('Cache-Control: private',false);

	header("Content-Type: $mime");

	header("Content-Disposition: attachment; filename=\"$filename\"");

	header("Content-Transfer-Encoding: binary");

	header("Content-Length: ".filesize($filepath));

	readfile($filepath);



}

else {



	// file not found

	header('HTTP/1.0 404 Not Found');

	echo('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">');

	echo('<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"><head><meta http-equiv="content-type" content="application/xhtml+xml; charset=iso-8859-1" /><title>file not found</title></head><body>');

	echo('<h1>file not found</h1><p>Sorry, but the file you requested could not be found.</p><p>Please click back to return to the page you were viewing.</p>');

	echo('</body></html>');



}



exit();

?>