WHMCS licensing addon issues (again)

[anglian]

OK, I am getting really frustrated with the licensing addon and the total lack of any support from WHMCS helpdesk.

 

I am hoping someone will do me a huge favour and provide a working licensing addon script (including .sql file) with license key and local keys saved to a database, for the following code

 

<?php
echo "Hello World!"; 
?>

 

I am sure I can manage to get the integration done eventually if I can only get a working version first.

Surely this is something that WHMCS should provide when the addon is purchased!

 

I know I would be very grateful for such code and it would help me a lot, and I am sure would be of great value to other members of the community.

[jclarke]

These blog posts may help you, they go into detail on how to configure and use the license addon as well as storing the license key and local key into a MySQL database.

 

http://markustenghamn.com/configure-setup-whmcs-licensing-addon

http://markustenghamn.com/whmcs-licensing-addon-storing-the-local-key

[anglian]

Hi,

Thanks for the reply, I have read them about 20 times, and even using the basic code & integration script there cannot get it to work

 

My code looks like

 

<?php
include 'licensefunction.php';

$licensekey = "vox12-613698c3a7";
$localkey = '';

$results = check_license($licensekey,$localkey);

if ($results["status"]=="Active") {

if (isset($_POST['add1'])) {
$result = $_POST['add1'] + $_POST['add2'];
echo $result;
}
?>
<form method="POST" action="#">
<input type="text" name="add1"> plus 
<input type="text" name="add2">
<input type="submit" value="Solve">
</form>

<?php

}
else {
echo 'License could not be verified';
}

?>

 

and

 

licensefunction.php is like

<?php
/*
*************************************************************************
*                                                                       *
* WHMCompleteSolution - Client Management, Billing & Support System     *
* Copyright (c) 2007-2012 WHMCS. All Rights Reserved,                   *
* Licensing Addon Integration Code                                      *
* Last Modified: 1st October 2010                                       *
*                                                                       *
*************************************************************************
*/

// Begin Check Function

function check_license($licensekey,$localkey="") {
   $whmcsurl = "http://mydomain.com/";
   $licensing_secret_key = "mysecretkey"; # Unique value, should match what is set in the product configuration for MD5 Hash Verification
   $check_token = time().md5(mt_rand(1000000000,9999999999).$licensekey);
   $checkdate = date("Ymd"); # Current date
   $usersip = isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR'];
   $localkeydays = 15; # How long the local key is valid for in between remote checks
   $allowcheckfaildays = 5; # How many days to allow after local key expiry before blocking access if connection cannot be made
   $localkeyvalid = false;
   if ($localkey) {
       $localkey = str_replace("\n",'',$localkey); # Remove the line breaks
	$localdata = substr($localkey,0,strlen($localkey)-32); # Extract License Data
	$md5hash = substr($localkey,strlen($localkey)-32); # Extract MD5 Hash
       if ($md5hash==md5($localdata.$licensing_secret_key)) {
           $localdata = strrev($localdata); # Reverse the string
   		$md5hash = substr($localdata,0,32); # Extract MD5 Hash
   		$localdata = substr($localdata,32); # Extract License Data
   		$localdata = base64_decode($localdata);
   		$localkeyresults = unserialize($localdata);
           $originalcheckdate = $localkeyresults["checkdate"];
           if ($md5hash==md5($originalcheckdate.$licensing_secret_key)) {
               $localexpiry = date("Ymd",mktime(0,0,0,date("m"),date("d")-$localkeydays,date("Y")));
               if ($originalcheckdate>$localexpiry) {
                   $localkeyvalid = true;
                   $results = $localkeyresults;
                   $validdomains = explode(",",$results["validdomain"]);
                   if (!in_array($_SERVER['SERVER_NAME'], $validdomains)) {
                       $localkeyvalid = false;
                       $localkeyresults["status"] = "Invalid";
                       $results = array();
                   }
                   $validips = explode(",",$results["validip"]);
                   if (!in_array($usersip, $validips)) {
                       $localkeyvalid = false;
                       $localkeyresults["status"] = "Invalid";
                       $results = array();
                   }
                   if ($results["validdirectory"]!=dirname(__FILE__)) {
                       $localkeyvalid = false;
                       $localkeyresults["status"] = "Invalid";
                       $results = array();
                   }
               }
           }
       }
   }
   if (!$localkeyvalid) {
       $postfields["licensekey"] = $licensekey;
       $postfields["domain"] = $_SERVER['SERVER_NAME'];
       $postfields["ip"] = $usersip;
       $postfields["dir"] = dirname(__FILE__);
       if ($check_token) $postfields["check_token"] = $check_token;
       if (function_exists("curl_exec")) {
           $ch = curl_init();
           curl_setopt($ch, CURLOPT_URL, $whmcsurl."modules/servers/licensing/verify.php");
           curl_setopt($ch, CURLOPT_POST, 1);
           curl_setopt($ch, CURLOPT_POSTFIELDS, $postfields);
           curl_setopt($ch, CURLOPT_TIMEOUT, 30);
           curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
           $data = curl_exec($ch);
           curl_close($ch);
       } else {
           $fp = fsockopen($whmcsurl, 80, $errno, $errstr, 5);
        if ($fp) {
       		$querystring = "";
               foreach ($postfields AS $k=>$v) {
                   $querystring .= "$k=".urlencode($v)."&";
               }
               $header="POST ".$whmcsurl."modules/servers/licensing/verify.php HTTP/1.0\r\n";
       		$header.="Host: ".$whmcsurl."\r\n";
       		$header.="Content-type: application/x-www-form-urlencoded\r\n";
       		$header.="Content-length: ".@strlen($querystring)."\r\n";
       		$header.="Connection: close\r\n\r\n";
       		$header.=$querystring;
       		$data="";
       		@stream_set_timeout($fp, 20);
       		@fputs($fp, $header);
       		$status = @socket_get_status($fp);
       		while (!@feof($fp)&&$status) {
       		    $data .= @fgets($fp, 1024);
       			$status = @socket_get_status($fp);
       		}
       		@fclose ($fp);
           }
       }
       if (!$data) {
           $localexpiry = date("Ymd",mktime(0,0,0,date("m"),date("d")-($localkeydays+$allowcheckfaildays),date("Y")));
           if ($originalcheckdate>$localexpiry) {
               $results = $localkeyresults;
           } else {
               $results["status"] = "Invalid";
               $results["description"] = "Remote Check Failed";
               return $results;
           }
       } else {
           preg_match_all('/<(.*?)>([^<]+)<\/\\1>/i', $data, $matches);
           $results = array();
           foreach ($matches[1] AS $k=>$v) {
               $results[$v] = $matches[2][$k];
           }
       }
       if ($results["md5hash"]) {
           if ($results["md5hash"]!=md5($licensing_secret_key.$check_token)) {
               $results["status"] = "Invalid";
               $results["description"] = "MD5 Checksum Verification Failed";
               return $results;
           }
       }
       if ($results["status"]=="Active") {
           $results["checkdate"] = $checkdate;
           $data_encoded = serialize($results);
           $data_encoded = base64_encode($data_encoded);
           $data_encoded = md5($checkdate.$licensing_secret_key).$data_encoded;
           $data_encoded = strrev($data_encoded);
           $data_encoded = $data_encoded.md5($data_encoded.$licensing_secret_key);
           $data_encoded = wordwrap($data_encoded,80,"\n",true);
           $results["localkey"] = $data_encoded;
       }
       $results["remotecheck"] = true;
   }
   unset($postfields,$data,$matches,$whmcsurl,$licensing_secret_key,$checkdate,$usersip,$localkeydays,$allowcheckfaildays,$md5hash);
   return $results;
}

// End Check Function
?>

 

Can anyone see any reason why this does not work? The domain & secret key have been removed here but are correct in my actual test script

[anglian]

This issue was resolved, thanks to Joe (Serverping)

[vec]

what was the problem?

[jclarke]

It ended up being a DNS issue with the server he was running the code on, it couldn't resolve the domain name of his WHMCS instance so the license check was failing.