170 lines
5.9 KiB
PHP
170 lines
5.9 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Validator\Constraints;
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use Egulias\EmailValidator\Validation\EmailValidation;
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use Egulias\EmailValidator\Validation\NoRFCWarningsValidation;
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use Symfony\Component\Validator\Constraint;
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use Symfony\Component\Validator\ConstraintValidator;
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use Symfony\Component\Validator\Exception\RuntimeException;
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use Symfony\Component\Validator\Exception\UnexpectedTypeException;
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/**
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* @author Bernhard Schussek <bschussek@gmail.com>
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*/
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class EmailValidator extends ConstraintValidator
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{
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/**
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* @internal
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*/
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const PATTERN_HTML5 = '/^[a-zA-Z0-9.!#$%&\'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+$/';
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/**
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* @internal
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*/
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const PATTERN_LOOSE = '/^.+\@\S+\.\S+$/';
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private static $emailPatterns = array(
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Email::VALIDATION_MODE_LOOSE => self::PATTERN_LOOSE,
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Email::VALIDATION_MODE_HTML5 => self::PATTERN_HTML5,
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);
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/**
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* @var string
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*/
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private $defaultMode;
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/**
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* @param string $defaultMode
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*/
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public function __construct($defaultMode = Email::VALIDATION_MODE_LOOSE)
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{
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if (\is_bool($defaultMode)) {
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@trigger_error(sprintf('Calling `new %s(%s)` is deprecated since Symfony 4.1, use `new %s("%s")` instead.', self::class, $defaultMode ? 'true' : 'false', self::class, $defaultMode ? Email::VALIDATION_MODE_STRICT : Email::VALIDATION_MODE_LOOSE), E_USER_DEPRECATED);
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$defaultMode = $defaultMode ? Email::VALIDATION_MODE_STRICT : Email::VALIDATION_MODE_LOOSE;
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}
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if (!\in_array($defaultMode, Email::$validationModes, true)) {
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throw new \InvalidArgumentException('The "defaultMode" parameter value is not valid.');
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}
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$this->defaultMode = $defaultMode;
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}
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/**
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* {@inheritdoc}
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*/
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public function validate($value, Constraint $constraint)
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{
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if (!$constraint instanceof Email) {
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throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Email');
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}
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if (null === $value || '' === $value) {
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return;
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}
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if (!is_scalar($value) && !(\is_object($value) && method_exists($value, '__toString'))) {
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throw new UnexpectedTypeException($value, 'string');
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}
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$value = (string) $value;
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if (null !== $constraint->strict) {
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@trigger_error(sprintf('The %s::$strict property is deprecated since Symfony 4.1. Use %s::mode="%s" instead.', Email::class, Email::class, Email::VALIDATION_MODE_STRICT), E_USER_DEPRECATED);
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if ($constraint->strict) {
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$constraint->mode = Email::VALIDATION_MODE_STRICT;
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} else {
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$constraint->mode = Email::VALIDATION_MODE_LOOSE;
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}
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}
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if (null === $constraint->mode) {
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$constraint->mode = $this->defaultMode;
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}
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if (!\in_array($constraint->mode, Email::$validationModes, true)) {
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throw new \InvalidArgumentException(sprintf('The %s::$mode parameter value is not valid.', \get_class($constraint)));
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}
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if (Email::VALIDATION_MODE_STRICT === $constraint->mode) {
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if (!class_exists('\Egulias\EmailValidator\EmailValidator')) {
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throw new RuntimeException('Strict email validation requires egulias/email-validator ~1.2|~2.0');
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}
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$strictValidator = new \Egulias\EmailValidator\EmailValidator();
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if (interface_exists(EmailValidation::class) && !$strictValidator->isValid($value, new NoRFCWarningsValidation())) {
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$this->context->buildViolation($constraint->message)
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->setParameter('{{ value }}', $this->formatValue($value))
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->setCode(Email::INVALID_FORMAT_ERROR)
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->addViolation();
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return;
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} elseif (!interface_exists(EmailValidation::class) && !$strictValidator->isValid($value, false, true)) {
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$this->context->buildViolation($constraint->message)
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->setParameter('{{ value }}', $this->formatValue($value))
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->setCode(Email::INVALID_FORMAT_ERROR)
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->addViolation();
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return;
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}
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} elseif (!preg_match(self::$emailPatterns[$constraint->mode], $value)) {
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$this->context->buildViolation($constraint->message)
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->setParameter('{{ value }}', $this->formatValue($value))
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->setCode(Email::INVALID_FORMAT_ERROR)
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->addViolation();
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return;
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}
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$host = (string) substr($value, strrpos($value, '@') + 1);
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// Check for host DNS resource records
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if ($constraint->checkMX) {
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if (!$this->checkMX($host)) {
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$this->context->buildViolation($constraint->message)
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->setParameter('{{ value }}', $this->formatValue($value))
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->setCode(Email::MX_CHECK_FAILED_ERROR)
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->addViolation();
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}
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return;
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}
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if ($constraint->checkHost && !$this->checkHost($host)) {
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$this->context->buildViolation($constraint->message)
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->setParameter('{{ value }}', $this->formatValue($value))
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->setCode(Email::HOST_CHECK_FAILED_ERROR)
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->addViolation();
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}
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}
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/**
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* Check DNS Records for MX type.
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*/
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private function checkMX(string $host): bool
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{
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return '' !== $host && checkdnsrr($host, 'MX');
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}
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/**
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* Check if one of MX, A or AAAA DNS RR exists.
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*/
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private function checkHost(string $host): bool
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{
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return '' !== $host && ($this->checkMX($host) || (checkdnsrr($host, 'A') || checkdnsrr($host, 'AAAA')));
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}
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}
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