--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Constraints;
+
+use Symfony\Component\Validator\Context\ExecutionContextInterface;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+/**
+ * @author Manuel Reinhard <manu@sprain.ch>
+ * @author Michael Schummel
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ *
+ * @see http://www.michael-schummel.de/2007/10/05/iban-prufung-mit-php/
+ */
+class IbanValidator extends ConstraintValidator
+{
+ /**
+ * IBAN country specific formats.
+ *
+ * The first 2 characters from an IBAN format are the two-character ISO country code.
+ * The following 2 characters represent the check digits calculated from the rest of the IBAN characters.
+ * The rest are up to thirty alphanumeric characters for
+ * a BBAN (Basic Bank Account Number) which has a fixed length per country and,
+ * included within it, a bank identifier with a fixed position and a fixed length per country
+ *
+ * @see http://www.swift.com/dsp/resources/documents/IBAN_Registry.pdf
+ *
+ * @var array
+ */
+ private static $formats = array(
+ 'AD' => 'AD\d{2}\d{4}\d{4}[\dA-Z]{12}', // Andorra
+ 'AE' => 'AE\d{2}\d{3}\d{16}', // United Arab Emirates
+ 'AL' => 'AL\d{2}\d{8}[\dA-Z]{16}', // Albania
+ 'AO' => 'AO\d{2}\d{21}', // Angola
+ 'AT' => 'AT\d{2}\d{5}\d{11}', // Austria
+ 'AX' => 'FI\d{2}\d{6}\d{7}\d{1}', // Aland Islands
+ 'AZ' => 'AZ\d{2}[A-Z]{4}[\dA-Z]{20}', // Azerbaijan
+ 'BA' => 'BA\d{2}\d{3}\d{3}\d{8}\d{2}', // Bosnia and Herzegovina
+ 'BE' => 'BE\d{2}\d{3}\d{7}\d{2}', // Belgium
+ 'BF' => 'BF\d{2}\d{23}', // Burkina Faso
+ 'BG' => 'BG\d{2}[A-Z]{4}\d{4}\d{2}[\dA-Z]{8}', // Bulgaria
+ 'BH' => 'BH\d{2}[A-Z]{4}[\dA-Z]{14}', // Bahrain
+ 'BI' => 'BI\d{2}\d{12}', // Burundi
+ 'BJ' => 'BJ\d{2}[A-Z]{1}\d{23}', // Benin
+ 'BL' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Saint Barthelemy
+ 'BR' => 'BR\d{2}\d{8}\d{5}\d{10}[A-Z][\dA-Z]', // Brazil
+ 'CG' => 'CG\d{2}\d{23}', // Congo
+ 'CH' => 'CH\d{2}\d{5}[\dA-Z]{12}', // Switzerland
+ 'CI' => 'CI\d{2}[A-Z]{1}\d{23}', // Ivory Coast
+ 'CM' => 'CM\d{2}\d{23}', // Cameron
+ 'CR' => 'CR\d{2}\d{3}\d{14}', // Costa Rica
+ 'CV' => 'CV\d{2}\d{21}', // Cape Verde
+ 'CY' => 'CY\d{2}\d{3}\d{5}[\dA-Z]{16}', // Cyprus
+ 'CZ' => 'CZ\d{2}\d{20}', // Czech Republic
+ 'DE' => 'DE\d{2}\d{8}\d{10}', // Germany
+ 'DO' => 'DO\d{2}[\dA-Z]{4}\d{20}', // Dominican Republic
+ 'DK' => 'DK\d{2}\d{4}\d{10}', // Denmark
+ 'DZ' => 'DZ\d{2}\d{20}', // Algeria
+ 'EE' => 'EE\d{2}\d{2}\d{2}\d{11}\d{1}', // Estonia
+ 'ES' => 'ES\d{2}\d{4}\d{4}\d{1}\d{1}\d{10}', // Spain (also includes Canary Islands, Ceuta and Melilla)
+ 'FI' => 'FI\d{2}\d{6}\d{7}\d{1}', // Finland
+ 'FO' => 'FO\d{2}\d{4}\d{9}\d{1}', // Faroe Islands
+ 'FR' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // France
+ 'GF' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // French Guyana
+ 'GB' => 'GB\d{2}[A-Z]{4}\d{6}\d{8}', // United Kingdom of Great Britain and Northern Ireland
+ 'GE' => 'GE\d{2}[A-Z]{2}\d{16}', // Georgia
+ 'GI' => 'GI\d{2}[A-Z]{4}[\dA-Z]{15}', // Gibraltar
+ 'GL' => 'GL\d{2}\d{4}\d{9}\d{1}', // Greenland
+ 'GP' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Guadeloupe
+ 'GR' => 'GR\d{2}\d{3}\d{4}[\dA-Z]{16}', // Greece
+ 'GT' => 'GT\d{2}[\dA-Z]{4}[\dA-Z]{20}', // Guatemala
+ 'HR' => 'HR\d{2}\d{7}\d{10}', // Croatia
+ 'HU' => 'HU\d{2}\d{3}\d{4}\d{1}\d{15}\d{1}', // Hungary
+ 'IE' => 'IE\d{2}[A-Z]{4}\d{6}\d{8}', // Ireland
+ 'IL' => 'IL\d{2}\d{3}\d{3}\d{13}', // Israel
+ 'IR' => 'IR\d{2}\d{22}', // Iran
+ 'IS' => 'IS\d{2}\d{4}\d{2}\d{6}\d{10}', // Iceland
+ 'IT' => 'IT\d{2}[A-Z]{1}\d{5}\d{5}[\dA-Z]{12}', // Italy
+ 'JO' => 'JO\d{2}[A-Z]{4}\d{4}[\dA-Z]{18}', // Jordan
+ 'KW' => 'KW\d{2}[A-Z]{4}\d{22}', // KUWAIT
+ 'KZ' => 'KZ\d{2}\d{3}[\dA-Z]{13}', // Kazakhstan
+ 'LB' => 'LB\d{2}\d{4}[\dA-Z]{20}', // LEBANON
+ 'LI' => 'LI\d{2}\d{5}[\dA-Z]{12}', // Liechtenstein (Principality of)
+ 'LT' => 'LT\d{2}\d{5}\d{11}', // Lithuania
+ 'LU' => 'LU\d{2}\d{3}[\dA-Z]{13}', // Luxembourg
+ 'LV' => 'LV\d{2}[A-Z]{4}[\dA-Z]{13}', // Latvia
+ 'MC' => 'MC\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Monaco
+ 'MD' => 'MD\d{2}[\dA-Z]{2}[\dA-Z]{18}', // Moldova
+ 'ME' => 'ME\d{2}\d{3}\d{13}\d{2}', // Montenegro
+ 'MF' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Saint Martin (French part)
+ 'MG' => 'MG\d{2}\d{23}', // Madagascar
+ 'MK' => 'MK\d{2}\d{3}[\dA-Z]{10}\d{2}', // Macedonia, Former Yugoslav Republic of
+ 'ML' => 'ML\d{2}[A-Z]{1}\d{23}', // Mali
+ 'MQ' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Martinique
+ 'MR' => 'MR13\d{5}\d{5}\d{11}\d{2}', // Mauritania
+ 'MT' => 'MT\d{2}[A-Z]{4}\d{5}[\dA-Z]{18}', // Malta
+ 'MU' => 'MU\d{2}[A-Z]{4}\d{2}\d{2}\d{12}\d{3}[A-Z]{3}', // Mauritius
+ 'MZ' => 'MZ\d{2}\d{21}', // Mozambique
+ 'NC' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // New Caledonia
+ 'NL' => 'NL\d{2}[A-Z]{4}\d{10}', // The Netherlands
+ 'NO' => 'NO\d{2}\d{4}\d{6}\d{1}', // Norway
+ 'PF' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // French Polynesia
+ 'PK' => 'PK\d{2}[A-Z]{4}[\dA-Z]{16}', // Pakistan
+ 'PL' => 'PL\d{2}\d{8}\d{16}', // Poland
+ 'PM' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Saint Pierre et Miquelon
+ 'PS' => 'PS\d{2}[A-Z]{4}[\dA-Z]{21}', // Palestine, State of
+ 'PT' => 'PT\d{2}\d{4}\d{4}\d{11}\d{2}', // Portugal (plus Azores and Madeira)
+ 'QA' => 'QA\d{2}[A-Z]{4}[\dA-Z]{21}', // Qatar
+ 'RE' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Reunion
+ 'RO' => 'RO\d{2}[A-Z]{4}[\dA-Z]{16}', // Romania
+ 'RS' => 'RS\d{2}\d{3}\d{13}\d{2}', // Serbia
+ 'SA' => 'SA\d{2}\d{2}[\dA-Z]{18}', // Saudi Arabia
+ 'SE' => 'SE\d{2}\d{3}\d{16}\d{1}', // Sweden
+ 'SI' => 'SI\d{2}\d{5}\d{8}\d{2}', // Slovenia
+ 'SK' => 'SK\d{2}\d{4}\d{6}\d{10}', // Slovak Republic
+ 'SM' => 'SM\d{2}[A-Z]{1}\d{5}\d{5}[\dA-Z]{12}', // San Marino
+ 'SN' => 'SN\d{2}[A-Z]{1}\d{23}', // Senegal
+ 'TF' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // French Southern Territories
+ 'TL' => 'TL\d{2}\d{3}\d{14}\d{2}', // Timor-Leste
+ 'TN' => 'TN59\d{2}\d{3}\d{13}\d{2}', // Tunisia
+ 'TR' => 'TR\d{2}\d{5}[\dA-Z]{1}[\dA-Z]{16}', // Turkey
+ 'UA' => 'UA\d{2}[A-Z]{6}[\dA-Z]{19}', // Ukraine
+ 'VG' => 'VG\d{2}[A-Z]{4}\d{16}', // Virgin Islands, British
+ 'WF' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Wallis and Futuna Islands
+ 'XK' => 'XK\d{2}\d{4}\d{10}\d{2}', // Republic of Kosovo
+ 'YT' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Mayotte
+ );
+
+ /**
+ * {@inheritdoc}
+ */
+ public function validate($value, Constraint $constraint)
+ {
+ if (!$constraint instanceof Iban) {
+ throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Iban');
+ }
+
+ if (null === $value || '' === $value) {
+ return;
+ }
+
+ if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) {
+ throw new UnexpectedTypeException($value, 'string');
+ }
+
+ $value = (string) $value;
+
+ // Remove spaces and convert to uppercase
+ $canonicalized = str_replace(' ', '', strtoupper($value));
+
+ // The IBAN must contain only digits and characters...
+ if (!ctype_alnum($canonicalized)) {
+ if ($this->context instanceof ExecutionContextInterface) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::INVALID_CHARACTERS_ERROR)
+ ->addViolation();
+ } else {
+ $this->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::INVALID_CHARACTERS_ERROR)
+ ->addViolation();
+ }
+
+ return;
+ }
+
+ // ...start with a two-letter country code
+ $countryCode = substr($canonicalized, 0, 2);
+
+ if (!ctype_alpha($countryCode)) {
+ if ($this->context instanceof ExecutionContextInterface) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::INVALID_COUNTRY_CODE_ERROR)
+ ->addViolation();
+ } else {
+ $this->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::INVALID_COUNTRY_CODE_ERROR)
+ ->addViolation();
+ }
+
+ return;
+ }
+
+ // ...have a format available
+ if (!array_key_exists($countryCode, self::$formats)) {
+ if ($this->context instanceof ExecutionContextInterface) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::NOT_SUPPORTED_COUNTRY_CODE_ERROR)
+ ->addViolation();
+ } else {
+ $this->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::NOT_SUPPORTED_COUNTRY_CODE_ERROR)
+ ->addViolation();
+ }
+
+ return;
+ }
+
+ // ...and have a valid format
+ if (!preg_match('/^'.self::$formats[$countryCode].'$/', $canonicalized)
+ ) {
+ if ($this->context instanceof ExecutionContextInterface) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::INVALID_FORMAT_ERROR)
+ ->addViolation();
+ } else {
+ $this->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::INVALID_FORMAT_ERROR)
+ ->addViolation();
+ }
+
+ return;
+ }
+
+ // Move the first four characters to the end
+ // e.g. CH93 0076 2011 6238 5295 7
+ // -> 0076 2011 6238 5295 7 CH93
+ $canonicalized = substr($canonicalized, 4).substr($canonicalized, 0, 4);
+
+ // Convert all remaining letters to their ordinals
+ // The result is an integer, which is too large for PHP's int
+ // data type, so we store it in a string instead.
+ // e.g. 0076 2011 6238 5295 7 CH93
+ // -> 0076 2011 6238 5295 7 121893
+ $checkSum = self::toBigInt($canonicalized);
+
+ // Do a modulo-97 operation on the large integer
+ // We cannot use PHP's modulo operator, so we calculate the
+ // modulo step-wisely instead
+ if (1 !== self::bigModulo97($checkSum)) {
+ if ($this->context instanceof ExecutionContextInterface) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::CHECKSUM_FAILED_ERROR)
+ ->addViolation();
+ } else {
+ $this->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Iban::CHECKSUM_FAILED_ERROR)
+ ->addViolation();
+ }
+ }
+ }
+
+ private static function toBigInt($string)
+ {
+ $chars = str_split($string);
+ $bigInt = '';
+
+ foreach ($chars as $char) {
+ // Convert uppercase characters to ordinals, starting with 10 for "A"
+ if (ctype_upper($char)) {
+ $bigInt .= (ord($char) - 55);
+
+ continue;
+ }
+
+ // Simply append digits
+ $bigInt .= $char;
+ }
+
+ return $bigInt;
+ }
+
+ private static function bigModulo97($bigInt)
+ {
+ $parts = str_split($bigInt, 7);
+ $rest = 0;
+
+ foreach ($parts as $part) {
+ $rest = ($rest.$part) % 97;
+ }
+
+ return $rest;
+ }
+}
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