Genkgo\Mail\Protocol\Smtp\Negotiation\ForceTlsUpgradeNegotiation

Complexity

Total Complexity

5

Size/Duplication

Total Lines	60
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	7

Test Coverage

Coverage

100%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	9	1
B	negotiate()	0	23	4

<?php
declare(strict_types=1);

namespace Genkgo\Mail\Protocol\Smtp\Negotiation;

use Genkgo\Mail\Exception\ConnectionInsecureException;
use Genkgo\Mail\Protocol\ConnectionInterface;
use Genkgo\Mail\Protocol\CryptoConstant;
use Genkgo\Mail\Protocol\Smtp\Client;
use Genkgo\Mail\Protocol\Smtp\NegotiationInterface;
use Genkgo\Mail\Protocol\Smtp\Request\EhloCommand;
use Genkgo\Mail\Protocol\Smtp\Request\StartTlsCommand;
use Genkgo\Mail\Protocol\Smtp\Response\EhloResponse;

final class ForceTlsUpgradeNegotiation implements NegotiationInterface
{
    /**
     * @var ConnectionInterface
     */
    private $connection;
    /**
     * @var string
     */
    private $ehlo;
    /**
     * @var int
     */
    private $crypto;

    /**
     * ConnectionNegotiation constructor.
     * @param ConnectionInterface $connection
     * @param string $ehlo
     * @param int $crypto
     */
    public function __construct(
        ConnectionInterface $connection,
        string $ehlo,
        int $crypto = CryptoConstant::TYPE_BEST_PRACTISE
    ) {
        $this->connection = $connection;
        $this->ehlo = $ehlo;
        $this->crypto = $crypto;
    }


    /**
     * @param Client $client
     * @throws ConnectionInsecureException
     */
    public function negotiate(Client $client): void
    {
        if (empty($this->connection->getMetaData(['crypto']))) {
            $reply = $client->request(new EhloCommand($this->ehlo));
            $reply->assertCompleted();

            $ehloResponse = new EhloResponse($reply);

            if ($ehloResponse->isAdvertising('STARTTLS')) {
                $client
                    ->request(new StartTlsCommand())
                    ->assertCompleted();

                $this->connection->upgrade($this->crypto);
            }
        }

        if (empty($this->connection->getMetaData(['crypto']))) {
            throw new ConnectionInsecureException(
                'Server does not support STARTTLS. Use smtp+tls:// or to allow insecure connections use smtp+plain://'
            );
        }
    }
}