156 lines
5.2 KiB
PHP
156 lines
5.2 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 Symfony\Component\Validator\Context\ExecutionContextInterface;
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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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private $isStrict;
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/**
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* @param bool $strict
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*/
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public function __construct($strict = false)
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{
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$this->isStrict = $strict;
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}
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/**
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* {@inheritdoc}
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*/
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public function validate($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 === $constraint->strict) {
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$constraint->strict = $this->isStrict;
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}
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if ($constraint->strict) {
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if (!class_exists('\Egulias\EmailValidator\EmailValidator') || interface_exists('\Egulias\EmailValidator\Validation\EmailValidation')) {
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throw new RuntimeException('Strict email validation requires egulias/email-validator:~1.2');
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}
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$strictValidator = new \Egulias\EmailValidator\EmailValidator();
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if (!$strictValidator->isValid($value, false, true)) {
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if ($this->context instanceof ExecutionContextInterface) {
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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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} else {
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$this->buildViolation($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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}
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return;
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}
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} elseif (!preg_match('/^.+\@\S+\.\S+$/', $value)) {
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if ($this->context instanceof ExecutionContextInterface) {
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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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} else {
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$this->buildViolation($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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}
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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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if ($this->context instanceof ExecutionContextInterface) {
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$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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} else {
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$this->buildViolation($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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}
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return;
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}
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if ($constraint->checkHost && !$this->checkHost($host)) {
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if ($this->context instanceof ExecutionContextInterface) {
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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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} else {
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$this->buildViolation($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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/**
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* Check DNS Records for MX type.
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*
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* @param string $host Host
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*
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* @return bool
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*/
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private function checkMX($host)
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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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* @param string $host Host
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*
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* @return bool
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*/
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private function checkHost($host)
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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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