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<?php |
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namespace Egulias\EmailValidator\Validation; |
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use Egulias\EmailValidator\EmailLexer; |
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use Egulias\EmailValidator\Exception\InvalidEmail; |
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use Egulias\EmailValidator\Helper\SmtpSocketHelper; |
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use Egulias\EmailValidator\Validation\Error\IllegalMailbox; |
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use Egulias\EmailValidator\Warning\NoDNSMXRecord; |
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use Egulias\EmailValidator\Warning\SocketWarning; |
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use Egulias\EmailValidator\Warning\Warning; |
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class MailboxCheckValidation implements EmailValidation |
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{ |
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const END_OF_LINE = "\r\n"; |
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/** |
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* @var InvalidEmail |
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*/ |
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private $error; |
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/** |
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* @var Warning[] |
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*/ |
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private $warnings = []; |
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/** |
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* @var SmtpSocketHelper |
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*/ |
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private $socketHelper; |
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/** |
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* @var string |
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*/ |
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private $fromEmail; |
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/** |
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* @var int |
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*/ |
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private $lastResponseCode; |
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/** |
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* MailboxCheckValidation constructor. |
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* |
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* @param SmtpSocketHelper $socketHelper |
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* @param string $fromEmail |
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*/ |
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public function __construct(SmtpSocketHelper $socketHelper, $fromEmail) |
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{ |
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if (!extension_loaded('intl')) { |
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throw new \LogicException(sprintf('The %s class requires the Intl extension.', __CLASS__)); |
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} |
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$this->socketHelper = $socketHelper; |
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$this->fromEmail = $fromEmail; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getError() |
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{ |
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return $this->error; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getWarnings() |
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{ |
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return $this->warnings; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function isValid($email, EmailLexer $emailLexer) |
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{ |
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$mxHosts = $this->getMXHosts($email); |
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$isValid = false; |
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foreach ($mxHosts as $mxHost) { |
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if ($this->checkMailboxExists($mxHost, $email)) { |
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$isValid = true; |
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break; |
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} |
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} |
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if (!$isValid) { |
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$this->error = new IllegalMailbox($this->lastResponseCode); |
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} |
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return $this->error === null; |
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} |
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/** |
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* Gets MX Hosts from email |
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* |
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* @param string $email |
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* |
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* @return array |
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*/ |
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protected function getMXHosts($email) |
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{ |
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$hostname = $this->extractHostname($email); |
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$result = getmxrr($hostname, $mxHosts); |
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if (!$result) { |
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$this->warnings[NoDNSMXRecord::CODE] = new NoDNSMXRecord(); |
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} |
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return $mxHosts; |
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} |
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/** |
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* Extracts hostname from email |
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* |
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* @param string $email |
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* |
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* @return string |
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*/ |
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private function extractHostname($email) |
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{ |
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$variant = defined('INTL_IDNA_VARIANT_UTS46') ? INTL_IDNA_VARIANT_UTS46 : INTL_IDNA_VARIANT_2003; |
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$lastAtPos = strrpos($email, '@'); |
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if ((bool) $lastAtPos) { |
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$hostname = substr($email, $lastAtPos + 1); |
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return rtrim(idn_to_ascii($hostname, IDNA_DEFAULT, $variant), '.') . '.'; |
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} |
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return rtrim(idn_to_ascii($email, IDNA_DEFAULT, $variant), '.') . '.'; |
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} |
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/** |
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* Checks mailbox |
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* |
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* @param string $hostname |
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* @param string $email |
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* @return bool |
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*/ |
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private function checkMailboxExists($hostname, $email) |
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{ |
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$this->socketHelper->open($hostname, $errno, $errstr); |
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if (!$this->socketHelper->isResource()) { |
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$this->warnings[SocketWarning::CODE][] = new SocketWarning($hostname, $errno, $errstr); |
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return false; |
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} |
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$this->lastResponseCode = $this->socketHelper->getResponseCode(); |
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if ($this->lastResponseCode !== 220) { |
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return false; |
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} |
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$this->socketHelper->write("EHLO {$hostname}" . self::END_OF_LINE); |
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$this->lastResponseCode = $this->socketHelper->getResponseCode(); |
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if ($this->lastResponseCode !== 250) { |
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return false; |
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} |
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$this->socketHelper->write("MAIL FROM: <{$this->fromEmail}>" . self::END_OF_LINE); |
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$this->lastResponseCode = $this->socketHelper->getResponseCode(); |
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if ($this->lastResponseCode !== 250) { |
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return false; |
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} |
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$this->socketHelper->write("RCPT TO: <{$email}>" . self::END_OF_LINE); |
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$this->lastResponseCode = $this->socketHelper->getResponseCode(); |
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if ($this->lastResponseCode !== 250) { |
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return false; |
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} |
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$this->socketHelper->write('QUIT' . self::END_OF_LINE); |
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$this->socketHelper->close(); |
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return true; |
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} |
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} |
egulias /
EmailValidator
