License Add On gives Remote Check Failed

[mfoland]

Playing around with the license script to put in a product I am licensing, and I am getting remote check failed. All of my code is correct, and goes to the right paths, etc... but for some reason on a remote site when trying to use the license of the software, when it goes to "call home", I get the Remote Check Failed.

 

Here's my php code. I want it to call home everytime. I have it to where it stores the license key in a flat text file.

 

<?php
ini_set('display_errors', 'Off');
error_reporting(0);
$loc = $_SERVER['DOCUMENT_ROOT'];
// Replace "yourprefix" with your own unique prefix to avoid conflicts with
// other instances of the licensing addon included within the same scope
function CloseAlert_check_license($licensekey, $localkey='') {

   // -----------------------------------
   //  -- Configuration Values --
   // -----------------------------------

   // Enter the url to your WHMCS installation here -- this calls home
   $whmcsurl = 'whmcspath';
   // Must match what is specified in the MD5 Hash Verification field
   // of the licensing product that will be used with this check.
   $licensing_secret_key = 'hidden_secret_key';
   // The number of days to wait between performing remote license checks
   $localkeydays = 0; //--Call home every time
   // The number of days to allow failover for after local key expiry
   $allowcheckfaildays = 0;

   // -----------------------------------
   //  -- Do not edit below this line --
   // -----------------------------------

   $check_token = time() . md5(mt_rand(1000000000, 9999999999) . $licensekey);
   $checkdate = date("Ymd");
   $domain = $_SERVER['SERVER_NAME'];
   $usersip = isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR'];
   //$dirpath = dirname(__FILE__);
	$dirpath = dirname($loc.'/closenet/');
   $verifyfilepath = 'modules/servers/licensing/verify.php';
   $localkeyvalid = false;
   if ($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();
                   }
                   $validdirs = explode(',', $results['validdirectory']);
                   if (!in_array($dirpath, $validdirs)) {
                       $localkeyvalid = false;
                       $localkeyresults['status'] = "Invalid";
                       $results = array();
                   }
               }
           }
       }
   }
   if (!$localkeyvalid) {
       $responseCode = 0;
       $postfields = array(
           'licensekey' => $licensekey,
           'domain' => $domain,
           'ip' => $usersip,
           'dir' => $dirpath,
       );
       if ($check_token) $postfields['check_token'] = $check_token;
       $query_string = '';
       foreach ($postfields AS $k=>$v) {
           $query_string .= $k.'='.urlencode($v).'&';
       }
       if (function_exists('curl_exec')) {
           $ch = curl_init();
           curl_setopt($ch, CURLOPT_URL, $whmcsurl . $verifyfilepath);
           curl_setopt($ch, CURLOPT_POST, 1);
					 curl_setopt($ch, CURLOPT_FRESH_CONNECT, 1);
           curl_setopt($ch, CURLOPT_POSTFIELDS, $query_string);
           curl_setopt($ch, CURLOPT_TIMEOUT, 30);
           curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
           $data = curl_exec($ch);
           $responseCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
           curl_close($ch);
       } else {
           $responseCodePattern = '/^HTTP\/\d+\.\d+\s+(\d+)/';
           $fp = @fsockopen($whmcsurl, 80, $errno, $errstr, 5);
           if ($fp) {
               $newlinefeed = "\r\n";
               $header = "POST ".$whmcsurl . $verifyfilepath . " HTTP/1.0" . $newlinefeed;
               $header .= "Host: ".$whmcsurl . $newlinefeed;
               $header .= "Content-type: application/x-www-form-urlencoded" . $newlinefeed;
               $header .= "Content-length: ".@strlen($query_string) . $newlinefeed;
               $header .= "Connection: close" . $newlinefeed . $newlinefeed;
               $header .= $query_string;
               $data = $line = '';
               @stream_set_timeout($fp, 20);
               @fputs($fp, $header);
               $status = @socket_get_status($fp);
               while (!@feof($fp)&&$status) {
                   $line = @fgets($fp, 1024);
                   $patternMatches = array();
                   if (!$responseCode
                       && preg_match($responseCodePattern, trim($line), $patternMatches)
                   ) {
                       $responseCode = (empty($patternMatches[1])) ? 0 : $patternMatches[1];
                   }
                   $data .= $line;
                   $status = @socket_get_status($fp);
               }
               @fclose ($fp);
           }
       }
       if ($responseCode != 200) {
           $localexpiry = date("Ymd", mktime(0, 0, 0, date("m"), date("d") - ($localkeydays + $allowcheckfaildays), date("Y")));
           if ($originalcheckdate > $localexpiry) {
               $results = $localkeyresults;
           } else {
               $results = array();
               $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 (!is_array($results)) {
           die("Invalid License Server Response");
       }
       if ($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;
}

// Get the license key and local key from storage
// These are typically stored either in flat files or an SQL database
$licensekey = "";
$localkey = "";
$base = __DIR__;
$handle = fopen($base."/license.txt", "r");
if ($handle){
$count = 0;
while (($line = fgets($handle)) !== false) {
// process the line reas
if ($count == 0) {
$licensekey = trim($line);
} else if ($count ==1) {
$localkey = trim($line);
}
$count++;
}
fclose ($handle);
} else {
die ("Could not read the license file. Please contact Support.");
}

// Validate the license key information
$results = CloseAlert_check_license($licensekey, $localkey);

// Raw output of results for debugging purpose
echo '<textarea cols="100" rows="20">' . print_r($results, true) . '</textarea>';
// Interpret response
switch ($results['status']) {
   case "Active":
       // get new local key and save it somewhere
       $localkeydata = str_replace(' ','',preg_replace('/\s+/', ' ',$results['localkey']));
			$handle = fopen($base."/license.txt", "r");
if ($handle){
$count = 0;
while (($line = fgets($handle)) !== false) {
// process the line reas
if ($count == 0) {
$licensekey = trim($line);
break;
} $count++;
}
fclose(handle);
//$localkey = trime($line);
//}
//$count++;
//}
//fclose ($handle);
if (isset($results['localkey'])) {
$textfile = fopen($base."license.txt", "w") or die ("Unable to open file!");
$contents = $licensekey."\n".$localkeydata."\n";
fwrite($textfile, $contents);
fclose($textfile);
}
} else {
die ("Could not read the license file. Please contact Support.");
}
       break;
   case "Invalid":
       //die("License key is Invalid");
			//include('../license/manageLicense.php');
       break;
   case "Expired":
       //die("License key is Expired");
       break;
   case "Suspended":
       //die("License key is Suspended");
			//include('../license/manageLicense.php');
			//--Figure out how to include our licenseManage.php page to input key
       break;
   default:
       die("Invalid Response");
       break;
}