prevent illegal licenses

homer09001

im looking for a way to prevent people pirating a script of mine, bassicaly the idea i have is to have a file on my server that contains MD5() encrypted top level domains of all licensed sites running my script, at the same time the script itself checks to see if the current top level domain matches any of the encrypted urls in the file on my server.

i know how to do it, i am just wondering how i go about doing it when an individual server does not allow remote url includes?

NogDog

[man]cURL[/man]

homer09001

ok thanks, so can i include that file simply by placing the following code:

<?php

$ch = curl_init("http://www.mysite.com/licenses.php");
curl_exec($ch);
curl_close($ch);
?>

NogDog

Unless you just want to directly output the contents of the URL, you will probably want to use the CURLOPT_RETURNTRANSFER option in a [man]curl_setopt/man function so that you can have the results of the curl_exec() returned to a variable, which you can then inspect for the data of interest.

homer09001

okay so i managed to get CURL to echo out the contents of the file, but idealy i need it to load a remote php file and allow me to echo out the vars from the remote file?

here is my code at the moment:

<?php 

$ch = curl_init(); 
$timeout = 0; 
curl_setopt ($ch, CURLOPT_URL, 'http://dth-scripts.com/VASlicenses.php'); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);

$file_contents = curl_exec($ch); 
curl_close($ch); 

// display file 
print($file_contents);
echo $var1; // Var from remote file

//$host = $_SERVER['HTTP_HOST'];
//echo $host;
?>

Horizon88

Are you planning on using something like the Zend Encoder? What prevents people from just removing this?

homer09001

Horizon88 wrote:
Are you planning on using something like the Zend Encoder? What prevents people from just removing this?

i have thought about this, the only problem with using Zend Encoder is not every webhost has it?

so what i was intending on doing was creating a variable which will differ with every domain, that is checked in a couple of random files within the script itself, granted its still not foolproof but its a get around for the problem with Zend

homer09001

hmm sorry Double Post please delete