PHP CORRUPT ZIP ERROR ON DOWNLOAD

[radhavallabh]

I used the following script to limit number of downloads but the downloaded zip files become corrupt.

I altered the code several times but no positive result.

This is the code can anyone debug this script

 

$path ="http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
//addslashes($_SERVER['REQUEST_URI']);
$ip = addslashes($_SERVER['REMOTE_ADDR']);
$dl = false;


$sql = sprintf("SELECT UNIX_TIMESTAMP(last_access) last_time FROM downloaded WHERE filepath = '%s' AND ipadres = '%s' ORDER BY last_access DESC", $path, $ip);
$res = mysql_query($sql);
if (mysql_num_rows($res) > 0) {
$last_xs = mysql_result($res, 0, 'last_time')+3600;
if ($last_xs < time()) {
mysql_query(sprintf("REPLACE downloaded SET filepath = '%s', ipadres = '%s', last_access = NOW()", $path, $ip));
$dl = true;
} 
} else {
$sql = sprintf("REPLACE downloaded SET filepath = '%s', ipadres = '%s', last_access = NOW()", $path, $ip);
mysql_query($sql);
$dl = true;
}
echo"<br> here is : ".$path."<br>";

if ($dl) {
$fullPath = $_SERVER['DOCUMENT_ROOT'].$path;
if(ini_get('zlib.output_compression')) 
ini_set('zlib.output_compression', 'Off'); 
//$chunksize = 1*(1024*1024);
if ($fd = fopen ($path, "r")) {
$fname = basename($path);
header("Content-Type: application/zip"); 
header("Content-Transfer-Encoding: Binary"); 
header("Content-Length: ".filesize($path)); 
header("Content-Disposition: attachment; filename=\"".basename($fname)."\""); 
header("Content-Description: File Transfer");
//header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
//header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: private");
header("Accept-Ranges: bytes");
header('Vary: User-Agent'); 

while(!feof($fd)) {
//$buffer = fread($fd,500*1024);
$buffer = fread($fd,filesize($path));
//$buffer = readfile($fd);
//$buffer = fread($fd, $chunksize);
//$buffer = fread($fd, (1*(1024*1024)));
//$buffer = file_get_contents($fd);
echo $buffer;
//ob_flush();
ob_end_flush();

}
fclose ($fd);
exit;
}
} else {
header('HTTP/1.0 503 Service Unavailable');
die('Abort, You reached your download limit for this file.');
}
?>

 

I tried several options as shown with //

Inputs by you all will be extremely helpful.

[radhavallabh]

Updated Code that I tried to fix the issue but no yield result. I use this script to offer zip downloads of 2 to 15Mb size. But they corrupt after download.

 

$path ="http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
//addslashes($_SERVER['REQUEST_URI']);
$ip = addslashes($_SERVER['REMOTE_ADDR']);
$dl = false;


$sql = sprintf("SELECT UNIX_TIMESTAMP(last_access) last_time FROM downloaded WHERE filepath = '%s' AND ipadres = '%s' ORDER BY last_access DESC", $path, $ip);
$res = mysql_query($sql);
if (mysql_num_rows($res) > 0) {
$last_xs = mysql_result($res, 0, 'last_time')+3600;
if ($last_xs < time()) {
	mysql_query(sprintf("REPLACE downloaded SET filepath = '%s', ipadres = '%s', last_access = NOW()", $path, $ip));
	$dl = true;
} 
} else {
$sql = sprintf("REPLACE downloaded SET filepath = '%s', ipadres = '%s', last_access = NOW()", $path, $ip);
mysql_query($sql);
$dl = true;
}
//echo"<br> here is : ".$path."<br>";

if ($dl) {
$fullPath = $_SERVER['DOCUMENT_ROOT'].$path;
// if(ini_get('zlib.output_compression')) 
       //   ini_set('zlib.output_compression', 'Off'); 
	//$chunksize = 1*(1024*1024);
if ($fd = fopen ($path, "r")) {
	$fname = basename($path);
        header("Content-Type: application/zip"); 
        header("Content-Transfer-Encoding: Binary"); 
       // header("Content-Length: ".filesize($path)); 
	//header('Content-Disposition: attachment; filename="'.basename($path).'"'); 
	//header('Content-Disposition: filename="'.$fname.'"');
	//header( 'Content-Disposition: attachment; filename="'.$path['basename'].'"' );
        header("Content-Disposition: attachment; filename=\"".basename($path)."\""); 
	header("Content-Description: File Transfer");
	//header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
	//header("Cache-Control: no-store, no-cache, must-revalidate");
	header("Cache-Control: private");
	header("Accept-Ranges: bytes");
	header('Vary: User-Agent'); 
        	
	while(!feof($fd)) {
		$buffer = fread($fd, 2048);
		//$buffer = fread($fd,500*1024);
		//$buffer = fread($fd,filesize($fname));
		//$buffer = readfile($fd);
	//$buffer = fread($fd, $chunksize);
	//$buffer = fread($fd, (1*(1024*1024)));
	//$buffer = file_get_contents($fd);
		echo $buffer;
		//ob_flush();
		//ob_end_flush();

	}
	fclose ($fd);
	exit;
}
} else {
header('HTTP/1.0 503 Service Unavailable');
die('Abort, You reached your download limit for this file.');
}

[radhavallabh]

Updated Content Length header yet zip file corrupts-

 

 

$path ="http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
//addslashes($_SERVER['REQUEST_URI']);
$ip = addslashes($_SERVER['REMOTE_ADDR']);
$dl = false;


$sql = sprintf("SELECT UNIX_TIMESTAMP(last_access) last_time FROM downloaded WHERE filepath = '%s' AND ipadres = '%s' ORDER BY last_access DESC", $path, $ip);
$res = mysql_query($sql);
if (mysql_num_rows($res) > 0) {
$last_xs = mysql_result($res, 0, 'last_time')+3600;
if ($last_xs < time()) {
	mysql_query(sprintf("REPLACE downloaded SET filepath = '%s', ipadres = '%s', last_access = NOW()", $path, $ip));
	$dl = true;
} 
} else {
$sql = sprintf("REPLACE downloaded SET filepath = '%s', ipadres = '%s', last_access = NOW()", $path, $ip);
mysql_query($sql);
$dl = true;
}
//echo"<br> here is : ".$path."<br>";
$fname = basename($path);
echo"<br> here is : ".$fname."<br>";
if ($dl) {
$fullPath = $_SERVER['DOCUMENT_ROOT'].$path;
// if(ini_get('zlib.output_compression')) 
       //   ini_set('zlib.output_compression', 'Off'); 
	//$chunksize = 1*(1024*1024);
if ($fd = fopen ($path, "r")) {
	$fname = basename($path);
	header("Pragma: public"); 
        header("Content-Type: application/zip"); 
        header("Content-Transfer-Encoding: Binary"); 
       	header("Content-Length: ".filesize($fname)); 
	//header('Content-Disposition: attachment; filename="'.basename($path).'"'); 
	//header('Content-Disposition: filename="'.$fname.'"');
	//header( 'Content-Disposition: attachment; filename="'.$path['basename'].'"' );
        header("Content-Disposition: attachment; filename=\"".basename($path)."\""); 
	header("Content-Description: File Transfer");
	header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
	//header("Cache-Control: no-store, no-cache, must-revalidate");
	header("Cache-Control: private");
	header("Accept-Ranges: bytes");
	header('Vary: User-Agent'); 
        	
	while(!feof($fd)) {
		$buffer = fread($fd, 2048);
		//$buffer = fread($fd,500*1024);
		//$buffer = fread($fd,filesize($fname));
		//$buffer = readfile($fd);
	//$buffer = fread($fd, $chunksize);
	//$buffer = fread($fd, (1*(1024*1024)));
	//$buffer = file_get_contents($fd);
		echo $buffer;
		//ob_flush();
		//ob_end_flush();

	}
	fclose ($fd);
	exit;
}
} else {
header('HTTP/1.0 503 Service Unavailable');
die('Abort, You reached your download limit for this file.');
}