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<?php |
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declare(strict_types=1); |
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namespace Genkgo\Mail\Protocol\Smtp\Negotiation; |
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use Genkgo\Mail\Exception\AssertionFailedException; |
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use Genkgo\Mail\Exception\ConnectionInsecureException; |
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use Genkgo\Mail\Protocol\ConnectionInterface; |
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use Genkgo\Mail\Protocol\Smtp\Client; |
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use Genkgo\Mail\Protocol\Smtp\NegotiationInterface; |
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use Genkgo\Mail\Protocol\Smtp\Request\EhloCommand; |
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use Genkgo\Mail\Protocol\Smtp\Request\HeloCommand; |
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use Genkgo\Mail\Protocol\Smtp\Request\StartTlsCommand; |
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use Genkgo\Mail\Protocol\Smtp\Response\EhloResponse; |
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final class TryTlsUpgradeNegotiation implements NegotiationInterface |
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{ |
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/** |
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* @var ConnectionInterface |
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*/ |
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private $connection; |
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/** |
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* @var string |
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*/ |
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private $ehlo; |
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/** |
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* @var int |
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*/ |
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private $crypto; |
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/** |
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* ConnectionNegotiation constructor. |
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* @param ConnectionInterface $connection |
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* @param string $ehlo |
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* @param int $crypto |
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*/ |
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public function __construct( |
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ConnectionInterface $connection, |
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string $ehlo, |
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int $crypto |
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) { |
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$this->connection = $connection; |
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$this->ehlo = $ehlo; |
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$this->crypto = $crypto; |
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} |
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/** |
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* @param Client $client |
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* @throws ConnectionInsecureException |
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*/ |
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public function negotiate(Client $client): void |
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{ |
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if (!empty($this->connection->getMetaData(['crypto']))) { |
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return; |
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} |
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$reply = $client->request(new EhloCommand($this->ehlo)); |
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if ($reply->isCommandNotImplemented()) { |
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// since EHLO is not implemented, let's try HELO and then STARTTLS |
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$reply = $client->request(new HeloCommand($this->ehlo)); |
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$reply->assertCompleted(); |
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try { |
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$client |
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->request(new StartTlsCommand()) |
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->assertCompleted(); |
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$this->connection->upgrade($this->crypto); |
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} catch (AssertionFailedException $e) { |
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// apparently HELO OR STARTTLS command is also not implemented |
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// but failure of STARTTLS is allowed |
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} |
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} else { |
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$reply->assertCompleted(); |
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$ehloResponse = new EhloResponse($reply); |
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if ($ehloResponse->isAdvertising('STARTTLS')) { |
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$client |
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->request(new StartTlsCommand()) |
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->assertCompleted(); |
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$this->connection->upgrade($this->crypto); |
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} |
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} |
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} |
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} |
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genkgo /
mail
