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<?php
/**
* You are allowed to use this API in your web application.
*
* Copyright (C) 2018 by customweb GmbH
*
* This program is licenced under the customweb software licence. With the
* purchase or the installation of the software in your application you
* accept the licence agreement. The allowed usage is outlined in the
* customweb software licence which can be found under
* http://www.sellxed.com/en/software-license-agreement
*
* Any modification or distribution is strictly forbidden. The license
* grants you the installation in one application. For multiuse you will need
* to purchase further licences at http://www.sellxed.com/shop.
*
* See the customweb software licence agreement for more details.
*
*/
/**
* Simple class which allows the interacting with IBANs.
*
* @author Thomas Hunziker
*
*/
class Customweb_Payment_Authorization_Method_Sepa_Iban {
private static $gmpInstalled = null;
private static $bcmathInstalled = null;
private $data = array();
/**
* This method accepts a map of IBAN formats. (e.g. given by self::getIbanFormats()).
* Only the given formats are used.
*
* @param string $data (Optional) List of formats. Default: All.
*/
public function __construct($data = null) {
if ($data === null) {
$this->data = self::getIbanFormats();
}
else {
$this->data = $data;
}
}
/**
* Checks if the given IBAN is valid.
*
* @param string $iban
* @throws Exception
* @return boolean
*/
public function validate($iban) {
$format = $this->getFormat($iban);
$allowedLength = $format['length'];
if (strlen($iban) != $allowedLength) {
throw new Customweb_Payment_Exception_PaymentErrorException(
new Customweb_Payment_Authorization_ErrorMessage(Customweb_I18n_Translation::__("The length of the IBAN is invalid.")));
}
$regex = '/^' . $format['format'] . '$/i';
if (!preg_match($regex, substr($iban, 4))) {
throw new Customweb_Payment_Exception_PaymentErrorException(
new Customweb_Payment_Authorization_ErrorMessage(Customweb_I18n_Translation::__("The format of the IBAN is invalid.")));
}
if (!self::validateCheckSum($iban)) {
throw new Customweb_Payment_Exception_PaymentErrorException(
new Customweb_Payment_Authorization_ErrorMessage(Customweb_I18n_Translation::__("The checksum of the IBAN is invalid.")));
}
return true;
}
/**
* Removes any obvious non valid char.
*
* @param string $bic
* @return string
*/
public function sanitize($iban) {
return strip_tags(str_replace(' ', '', $iban));
}
protected function getFormat($iban) {
$countryCode = self::extractCountryCode($iban);
if (isset($this->data[$countryCode])) {
return $this->data[$countryCode];
}
else {
throw new Exception(Customweb_Core_String::_("No valid country code in the given IBAN. Country Code: '!code'")->format(array('!code' => $countryCode)));
}
}
/**
* Returns true when the checksum of the given IBAN is valid.
*
* @param string $iban
* @return boolean
*/
public static function validateCheckSum($iban) {
$iban = strtoupper($iban);
$digitRepresentation = self::replaceLetters(substr($iban, 4) . substr($iban, 0, 4));
if (self::mod97($digitRepresentation) === 1) {
return true;
}
else {
return false;
}
}
/**
* This method calculates the mod 97 on the given number. Depending on the
* available native implementations the calcuation can be faster.
*
* @param string $numberAsString
* @return int
*/
private static function mod97($numberAsString) {
if (self::isBcMathInstalled()) {
return (int)bcmod($numberAsString, '97');
}
else if(self::isGmpInstalled()) {
return (int)gmp_intval(gmp_mod(gmp_init($numberAsString, 10),'97'));
}
else {
$checksum = intval(substr($numberAsString, 0, 1));
for ($pos = 1; $pos < strlen($numberAsString); $pos++) {
$checksum *= 10;
$checksum += intval(substr($numberAsString, $pos, 1));
$checksum %= 97;
}
return (int)$checksum;
}
}
private static function isGmpInstalled() {
if (self::$gmpInstalled === null) {
if (function_exists('gmp_intval')) {
self::$gmpInstalled = true;
}
else {
self::$gmpInstalled = false;
}
}
return self::$gmpInstalled;
}
private static function isBcMathInstalled() {
if (self::$bcmathInstalled === null) {
if (function_exists('bcmod')) {
self::$bcmathInstalled = true;
}
else {
self::$bcmathInstalled = false;
}
}
return self::$bcmathInstalled;
}
private static function replaceLetters($string) {
$replaceChars = range('A','Z');
foreach (range(10,35) as $number) {
$replacements[] = strval($number);
}
return str_replace($replaceChars, $replacements, $string);
}
public static function extractCountryCode($iban) {
return strtoupper(substr($iban, 0, 2));
}
/**
* Returns a map which contains a mapping between the format
* and the country code.
*
* @return multitype:multitype:number string
*/
public static function getIbanFormats() {
return self::$formats;
}
private static $formats = array(
'AL' => array(
'length' => 28,
'format' => '[0-9]{8}[a-zA-Z0-9]{16}',
),
'AD' => array(
'length' => 24,
'format' => '[0-9]{8}[a-zA-Z0-9]{12}',
),
'AT' => array(
'length' => 20,
'format' => '[0-9]{16}',
),
'AZ' => array(
'length' => 28,
'format' => '[a-zA-Z0-9]{4}[0-9]{20}',
),
'BH' => array(
'length' => 22,
'format' => '[A-Za-z]{4}[a-zA-Z0-9]{14}',
),
'BE' => array(
'length' => 16,
'format' => '[0-9]{12}',
),
'BA' => array(
'length' => 20,
'format' => '[0-9]{16}',
),
'BR' => array(
'length' => 29,
'format' => '[0-9]{23}[A-Za-z]{1}[a-zA-Z0-9]{1}',
),
'BG' => array(
'length' => 22,
'format' => '[A-Za-z]{4}[0-9]{6}[a-zA-Z0-9]{8}',
),
'CR' => array(
'length' => 21,
'format' => '[0-9]{17}',
),
'HR' => array(
'length' => 21,
'format' => '[0-9]{17}',
),
'CY' => array(
'length' => 28,
'format' => '[0-9]{8}[a-zA-Z0-9]{16}',
),
'CZ' => array(
'length' => 24,
'format' => '[0-9]{20}',
),
'DK' => array(
'length' => 18,
'format' => '[0-9]{14}',
),
'DO' => array(
'length' => 28,
'format' => '[A-Za-z]{4}[0-9]{20}',
),
'EE' => array(
'length' => 20,
'format' => '[0-9]{16}',
),
'FO' => array(
'length' => 18,
'format' => '[0-9]{14}',
),
'FI' => array(
'length' => 18,
'format' => '[0-9]{14}',
),
'FR' => array(
'length' => 27,
'format' => '[0-9]{10}[a-zA-Z0-9]{11}[0-9]{2}',
),
'GE' => array(
'length' => 22,
'format' => '[A-Za-z]{2}[0-9]{16}',
),
'DE' => array(
'length' => 22,
'format' => '[0-9]{18}',
),
'GI' => array(
'length' => 23,
'format' => '[A-Za-z]{4}[a-zA-Z0-9]{15}',
),
'GR' => array(
'length' => 27,
'format' => '[0-9]{7}[a-zA-Z0-9]{16}',
),
'GL' => array(
'length' => 18,
'format' => '[0-9]{14}',
),
'GT' => array(
'length' => 28,
'format' => '[a-zA-Z0-9]{24}',
),
'HU' => array(
'length' => 28,
'format' => '[0-9]{24}',
),
'IS' => array(
'length' => 26,
'format' => '[0-9]{22}',
),
'IE' => array(
'length' => 22,
'format' => '[a-zA-Z0-9]{4}[0-9]{14}',
),
'IL' => array(
'length' => 23,
'format' => '[0-9]{19}',
),
'IT' => array(
'length' => 27,
'format' => '[A-Za-z]{1}[0-9]{10}[a-zA-Z0-9]{12}',
),
'JO' => array(
'length' => 30,
'format' => '[A-Za-z]{4}[0-9]{22}',
),
'KZ' => array(
'length' => 20,
'format' => '[0-9]{3}[a-zA-Z0-9]{13}',
),
'KU' => array(
'length' => 30,
'format' => '[A-Za-z]{4}[a-zA-Z0-9]{22}',
),
'LV' => array(
'length' => 21,
'format' => '[A-Za-z]{4}[a-zA-Z0-9]{13}',
),
'LB' => array(
'length' => 28,
'format' => '[0-9]{4}[a-zA-Z0-9]{20}',
),
'LI' => array(
'length' => 21,
'format' => '[0-9]{5}[a-zA-Z0-9]{12}',
),
'LT' => array(
'length' => 20,
'format' => '[0-9]{16}',
),
'LU' => array(
'length' => 20,
'format' => '[0-9]{3}[a-zA-Z0-9]{13}',
),
'MK' => array(
'length' => 19,
'format' => '[0-9]{3}[a-zA-Z0-9]{10}[0-9]{2}',
),
'MT' => array(
'length' => 31,
'format' => '[A-Za-z]{4}[0-9]{5}[a-zA-Z0-9]{18}',
),
'MR' => array(
'length' => 27,
'format' => '[0-9]{23}',
),
'MU' => array(
'length' => 30,
'format' => '[A-Za-z]{4}[0-9]{19}[A-Za-z]{3}',
),
'MO' => array(
'length' => 27,
'format' => '[0-9]{10}[a-zA-Z0-9]{11}[0-9]{2}',
),
'MD' => array(
'length' => 24,
'format' => '[a-zA-Z0-9]{2}[0-9]{18}',
),
'ME' => array(
'length' => 22,
'format' => '[0-9]{18}',
),
'NL' => array(
'length' => 18,
'format' => '[A-Za-z]{4}[0-9]{10}',
),
'NO' => array(
'length' => 15,
'format' => '[0-9]{11}',
),
'PK' => array(
'length' => 24,
'format' => '[a-zA-Z0-9]{4}[0-9]{16}',
),
'PS' => array(
'length' => 29,
'format' => '[a-zA-Z0-9]{4}[0-9]{21}',
),
'PL' => array(
'length' => 28,
'format' => '[0-9]{24}',
),
'PT' => array(
'length' => 25,
'format' => '[0-9]{21}',
),
'QA' => array(
'length' => 29,
'format' => '[A-Za-z]{4}[a-zA-Z0-9]{21}',
),
'RO' => array(
'length' => 24,
'format' => '[A-Za-z]{4}[a-zA-Z0-9]{16}',
),
'SM' => array(
'length' => 27,
'format' => '[A-Za-z]{1}[0-9]{10}[a-zA-Z0-9]{12}',
),
'SA' => array(
'length' => 24,
'format' => '[0-9]{2}[a-zA-Z0-9]{18}',
),
'RS' => array(
'length' => 22,
'format' => '[0-9]{18}',
),
'SK' => array(
'length' => 24,
'format' => '[0-9]{20}',
),
'SI' => array(
'length' => 19,
'format' => '[0-9]{15}',
),
'ES' => array(
'length' => 24,
'format' => '[0-9]{20}',
),
'SE' => array(
'length' => 24,
'format' => '[0-9]{20}',
),
'CH' => array(
'length' => 21,
'format' => '[0-9]{5}[a-zA-Z0-9]{12}',
),
'TN' => array(
'length' => 24,
'format' => '[0-9]{20}',
),
'TR' => array(
'length' => 26,
'format' => '[0-9]{5}[a-zA-Z0-9]{17}',
),
'AE' => array(
'length' => 23,
'format' => '[0-9]{3}[a-zA-Z0-9]{16}',
),
'GB' => array(
'length' => 22,
'format' => '[A-Za-z]{4}[0-9]{14}',
),
'VG' => array(
'length' => 24,
'format' => '[a-zA-Z0-9]{4}[0-9]{16}',
),
);
}