allow only one file for each IP

Hi, I have this code and need to use "ignore_user_abort(true)" the right way:

$file = addslashes($_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", $file, $ip);
$res = mysql_query($sql);
if (mysql_num_rows($res) > 0) {

$last_xs = mysql_result($res, 0, 'last_time')+3600;

$now = time();

if ($last_xs < $now) {

$dl = true;

} 
} else {

$dl = true;
}

if ($dl) {

mysql_query(sprintf("REPLACE downloaded SET filepath = '%s', ipadres = '%s', last_access = NOW()", $file, $ip));

ignore_user_abort(true);

dl_file_resume(ltrim($file, '/')); // this function is just a download function with resume abbility

mysql_close($cs_conn);
} else {

header('HTTP/1.0 503 Service Unavailable');
}
exit;
?>

what do I need to do that it works for 100%

[Join us @ facebook]

What exactly do you want to do? Allow 1 download to the same file per hour?

yes for each user, I want to block multiple access for download clients.

I guess what I need to do is to update the record if the file download is finished...

[Join us @ facebook]

with ignore_user_abort(true) you only have to delete the record in the end of the script

with ignore_user_abort(true) you only have to delete the record in the end of the script

will say I need to che4ck like this?

if (ignore_user_abort(true) == 1) {
  // delete teh record?
}

and this code at after the code where the output starts

[Join us @ facebook]

I don't think you need to check this, but the way you write it will work definately

I don't think you need to check this, but the way you write it will work definately

how to work without validation?

[Join us @ facebook]

There is no need for validation. The ignore_user_abort() is a directive.

There is no need for validation. The ignore_user_abort() is a directive.

this is what I don't understand, I need to use the code like this?

   

ignore_user_abort(true);
dl_file_resume(ltrim($file, '/'));
// code to delete the record

[Join us @ facebook]

Yes.

If you run the ignore_user_abort(true); command then the script wont stop until the process finishes.

Yes.

If you run the ignore_user_abort(true); command then the script wont stop until the process finishes.

so if I use the delete statement at the end after the download is finished. it should work because the user will not download the file again right?

but what if someone want to continue the download later?

[Join us @ facebook]

Yes.

If you run the ignore_user_abort(true); command then the script wont stop until the process finishes.

so if I use the delete statement at the end after the download is finished. it should work because the user will not download the file again right?

It will work because even if the download corrupts the user will be able to download it again.

... hm, I'm still not sure if this will work with these download managers...

and what if the user need to download a CD (900 GB) and has a slow connection and need several attempts (using a DL manager) this way the use has  created x * 900GB as traffic...

[Join us @ facebook]

This wont work with download managers.

To make it work with a download manager you need to work it out more. Check this directive :

$_SERVER['HTTP_RANGE']

This wont work with download managers.

To make it work with a download manager you need to work it out more. Check this directive :

$_SERVER['HTTP_RANGE']

I know I use this function to have this resume function:

Code:

<?php
function dl_file_resume($file){

    //First, see if the file exists
    if (!is_file($file)) { die("<b>404 File not found!</b>"); }
   
    //Gather relevent info about file
    $len = filesize($file);
    $filename = basename($file);
    $file_extension = strtolower(substr(strrchr($filename,"."),1));
   
    //This will set the Content-Type to the appropriate setting for the file
    switch( $file_extension ) {
        case "exe": $ctype="application/octet-stream"; break;
        case "zip": $ctype="application/zip"; break;
        case "mp3": $ctype="audio/mpeg"; break;
        case "mpg":$ctype="video/mpeg"; break;
        case "avi": $ctype="video/x-msvideo"; break;
        default: $ctype="application/force-download";
    }
   
    //Begin writing headers
    header("Cache-Control:");
    header("Cache-Control: public");
   
    //Use the switch-generated Content-Type
    header("Content-Type: $ctype");
    if (strstr($_SERVER['HTTP_USER_AGENT'], "MSIE")) {
        # workaround for IE filename bug with multiple periods / multiple dots in filename
        # that adds square brackets to filename - eg. setup.abc.exe becomes setup[1].abc.exe
        $iefilename = preg_replace('/\./', '%2e', $filename, substr_count($filename, '.') - 1);
        header("Content-Disposition: attachment; filename=\"$iefilename\"");
    } else {
        header("Content-Disposition: attachment; filename=\"$filename\"");
    }
    header("Accept-Ranges: bytes");
   
    $size=filesize($file);
    //check if http_range is sent by browser (or download manager)
    if(isset($_SERVER['HTTP_RANGE'])) {
        list($a, $range)=explode("=",$_SERVER['HTTP_RANGE']);
        //if yes, download missing part
        str_replace($range, "-", $range);
        $size2=$size-1;
        $new_length=$size2-$range;
        header("HTTP/1.1 206 Partial Content");
        header("Content-Length: $new_length");
        header("Content-Range: bytes $range$size2/$size");
    } else {
        $size2=$size-1;
        header("Content-Range: bytes 0-$size2/$size");
        header("Content-Length: ".$size);
    }
    //open the file
    $fp=fopen("$file","rb");
    //seek to start of missing part
    fseek($fp,$range);
    //start buffered download
    while(!feof($fp)){
        //reset time limit for big files
        set_time_limit(0);
        print(fread($fp,1024*8));
        flush();
        ob_flush();
    }
    fclose($fp);
    exit;
}

Nick,

what I need to do is to limit the connections from the DL manager which downloads the file several time, of course not the whole one but almost

[Join us @ facebook]

So instead of using 5 concurrent connections it should allow 3?

So instead of using 5 concurrent connections it should allow 3?

1 or 2

is 5 a setting I can change on my server?

[Join us @ facebook]

You should do that yourself, by checking how many times the user entered the if(isset($_SERVER['HTTP_RANGE'])) {?> and I am not sure if this is going to work.

[Guest]

[62.885]

Googlebot