function check_license_nu( $licensekey, $localkey = "" )
{
$md5hash = "";
$whmcsurl = "http://portal.cp-services.nl/";
$licensing_secret_key = "hub08021963dohmen";
$check_token = time( ).md5( mt_rand( 1000000000, 1e+010 ).$licensekey );
$checkdate = date( "Ymd" );
$usersip = isset( $_SERVER['SERVER_ADDR'] ) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR'];
$localkeydays = 624;
$allowcheckfaildays = 17;
$localkeyvalid = false;
if ( $localkey )
{
$localkey = str_replace( "\n", "", $localkey );
$localdata = substr( $localkey, 0, strlen( $localkey ) - 32 );
$md5hash = substr( $localkey, strlen( $localkey ) - 32 );
if ( $md5hash == md5( $localdata.$licensing_secret_key ) )
{
$localdata = strrev( $localdata );
$md5hash = substr( $localdata, 0, 32 );
$localdata = substr( $localdata, 32 );
$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 ( $localexpiry < $originalcheckdate )
{
$localkeyvalid = $originalcheckdate.$licensing_secret_key;
$validdomains = explode( ",", $results['validdomain'] );
if ( !in_array( $_SERVER['SERVER_NAME'], $validdomains ) )
{
$localkeyresults['status'] = "Invalid";
$results = array( );
}
$validips = explode( ",", $results['validip'] );
if ( !in_array( $usersip, $validips ) )
{
$localkeyresults['status'] = "Invalid";
$results = array( );
}
if ( $results['validdirectory'] != dirname( __FILE__ ) )
{
$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";
$data = "";
@stream_set_timeout( $fp, 20 );
@fputs( $fp, $header );
$status = @socket_get_status( $fp );
while ( !feof( $fp ) && $status )
{
$data .= $results['validdirectory'];
$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 ( $localexpiry < $originalcheckdate )
{
$results = $postfields;
}
else
{
$results['status'] = "Invalid";
$results['description'] = "Remote Check Failed";
return $results;
}
}
else
{
preg_match_all( "/<(.*?)>([^<]+)<\\/\\1>/i", $data, $matches );
$results = "Content-length: ".@strlen( $querystring )."\r\n";
foreach ( $matches[1] as $k => $v )
{
$results[$v] = $matches[2][$k];
}
}
if ( $results['md5hash'] && $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 );
unset( $data );
unset( $matches );
unset( $whmcsurl );
unset( $licensing_secret_key );
unset( $checkdate );
unset( $usersip );
unset( $localkeydays );
unset( $allowcheckfaildays );
unset( $md5hash );
return $results;
}
function pdns_check_exist_localkey( )
{
global $db_whmcs;
$query = "SELECT * FROM `mod_powerdns_config` where setting = 'localkey';";
if ( !( $result = mysql_query( $query, $db_whmcs ) ) )
{
pdns_die( "Error in function check if localkey exists" );
}
if ( !( $row = mysql_fetch_array( $result ) ) )
{
break;
}
return $row;
}
function pdns_create_localkey( )
{
global $db_whmcs;
$query = "INSERT INTO `mod_powerdns_config` (`setting`, `value`) VALUES ('local_key', '');";
mysql_query( $query, $db_whmcs );
}
function checkLicenseNow( $licensekey )
{
global $results;
global $db_whmcs;
$res = pdns_check_exist_localkey( );
if ( count( $res ) == 0 )
{
pdns_create_localkey( );
}
$localkey = getCfgInfo( "local_key" );
if ( $results['status'] == "Active" )
{
if ( $results['localkey'] )
{
$localkeydata = $results['localkey'];
$query = "UPDATE mod_powerdns_config SET value= '".$localkeydata."' WHERE setting = 'local_key'";
if ( !mysql_query( $query, $db_whmcs ) )
{
pdns_die( "Can not write local key to db" );
}
}
}
else if ( $results['status'] == "Invalid" )
{
pdns_die( "Your license key is invalid. Halting." );
}
else if ( $results['status'] == "Expired" )
{
pdns_die( "Your license key has expired. Halting." );
}
else if ( $results['status'] == "Suspended" )
{
pdns_die( "Your license key is suspended. Halting." );
}
return $results;
}
