<?php
/**
* cc_validation Class.
*
* @package classes
* @copyright Copyright 2003-2010 Zen Cart Development Team
* @copyright Portions Copyright 2003 osCommerce
* @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
* @version $Id: cc_validation.php 16435 2010-05-28 09:34:32Z drbyte $
*/
if (!defined('IS_ADMIN_FLAG')) {
die('Illegal Access');
}
/**
* cc_validation Class.
* Class to validate credit card numbers etc
*
* @package classes
*/
class cc_validation extends base {
var $cc_type, $cc_number, $cc_expiry_month, $cc_expiry_year;
function validate($number, $expiry_m, $expiry_y, $start_m = null, $start_y = null) {
$this->cc_number = preg_replace('/[^0-9]/', '', $number);
// NOTE: We check Solo before Maestro, and Maestro/Switch *before* we check Visa/Mastercard, so we don't have to rule-out numerous types from V/MC matching rules.
if (preg_match('/^(6334[5-9][0-9]|6767[0-9]{2})[0-9]{10}([0-9]{2,3}?)?$/', $this->cc_number) && CC_ENABLED_SOLO=='1') {
$this->cc_type = "Solo"; // is also a Maestro product
} else if (preg_match('/^(49369[8-9]|490303|6333[0-4][0-9]|6759[0-9]{2}|5[0678][0-9]{4}|6[0-9][02-9][02-9][0-9]{2})[0-9]{6,13}?$/', $this->cc_number) && (CC_ENABLED_MAESTRO=='1' || CC_ENABLED_SWITCH=='1')) {
$this->cc_type = "Maestro";
} else if (preg_match('/^(49030[2-9]|49033[5-9]|4905[0-9]{2}|49110[1-2]|49117[4-9]|49918[0-2]|4936[0-9]{2}|564182|6333[0-4][0-9])[0-9]{10}([0-9]{2,3}?)?$/', $this->cc_number) && (CC_ENABLED_MAESTRO=='1' || CC_ENABLED_SWITCH=='1')) {
$this->cc_type = "Maestro"; // SWITCH is now Maestro
} elseif (preg_match('/^4[0-9]{12}([0-9]{3})?$/', $this->cc_number) && CC_ENABLED_VISA=='1') {
$this->cc_type = 'Visa';
} elseif (preg_match('/^5[1-5][0-9]{14}$/', $this->cc_number) && CC_ENABLED_MC=='1') {
$this->cc_type = 'MasterCard';
} elseif (preg_match('/^3[47][0-9]{13}$/', $this->cc_number) && CC_ENABLED_AMEX=='1') {
$this->cc_type = 'American Express';
} elseif (preg_match('/^3(0[0-5]|[68][0-9])[0-9]{11}$/', $this->cc_number) && CC_ENABLED_DINERS_CLUB=='1') {
$this->cc_type = 'Diners Club';
} elseif (preg_match('/^(6011[0-9]{12}|622[1-9][0-9]{12}|64[4-9][0-9]{13}|65[0-9]{14})$/', $this->cc_number) && CC_ENABLED_DISCOVER=='1') {
$this->cc_type = 'Discover';
} elseif (preg_match('/^(35(28|29|[3-8][0-9])[0-9]{12}|2131[0-9]{11}|1800[0-9]{11})$/', $this->cc_number) && CC_ENABLED_JCB=='1') {
$this->cc_type = "JCB";
} elseif (preg_match('/^5610[0-9]{12}$/', $this->cc_number) && CC_ENABLED_AUSTRALIAN_BANKCARD=='1') {
$this->cc_type = 'Australian BankCard'; // NOTE: is now obsolete
} else {
return -1;
}
if (is_numeric($expiry_m) && ($expiry_m > 0) && ($expiry_m < 13)) {
$this->cc_expiry_month = $expiry_m;
} else {
return -2;
}
$current_year = date('Y');
if (strlen($expiry_y) == 2) $expiry_y = intval(substr($current_year, 0, 2) . $expiry_y);
if (is_numeric($expiry_y) && ($expiry_y >= $current_year) && ($expiry_y <= ($current_year + 10))) {
$this->cc_expiry_year = $expiry_y;
} else {
return -3;
}
if ($expiry_y == $current_year) {
if ($expiry_m < date('n')) {
return -4;
}
}
// check the issue month & year but only for Switch/Solo cards
if (($start_m || $start_y) && in_array($this->cc_type, array('Switch', 'Solo'))) {
if (!(is_numeric($start_m) && ($start_m > 0) && ($start_m < 13))) {
return -2;
}
if (strlen($start_y) == 2) {
if ($start_y > 80) {
$start_y = intval('19' . $start_y);
} else {
$start_y = intval('20' . $start_y);
}
}
if (!is_numeric($start_y) || ($start_y > $current_year)) {
return -3;
}
if (!($start_y >= ($current_year - 10))) {
return -3;
}
}
return $this->is_valid();
}
function is_valid() {
$cardNumber = strrev($this->cc_number);
$numSum = 0;
for ($i=0; $i<strlen($cardNumber); $i++) {
$currentNum = substr($cardNumber, $i, 1);
// Double every second digit
if ($i % 2 == 1) {
$currentNum *= 2;
}
// Add digits of 2-digit numbers together
if ($currentNum > 9) {
$firstNum = $currentNum % 10;
$secondNum = ($currentNum - $firstNum) / 10;
$currentNum = $firstNum + $secondNum;
}
$numSum += $currentNum;
}
// If the total has no remainder it's OK
return ($numSum % 10 == 0);
}
}