* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Mailer\Transport\Smtp\Stream; use Symfony\Component\Mailer\Exception\TransportException; /** * A stream supporting remote sockets. * * @author Fabien Potencier * @author Chris Corbyn * * @internal */ final class SocketStream extends AbstractStream { private string $url; private string $host = 'localhost'; private int $port = 465; private float $timeout; private bool $tls = true; private ?string $sourceIp = null; private array $streamContextOptions = []; /** * @return $this */ public function setTimeout(float $timeout): static { $this->timeout = $timeout; return $this; } public function getTimeout(): float { return $this->timeout ?? (float) \ini_get('default_socket_timeout'); } /** * Literal IPv6 addresses should be wrapped in square brackets. * * @return $this */ public function setHost(string $host): static { $this->host = $host; return $this; } public function getHost(): string { return $this->host; } /** * @return $this */ public function setPort(int $port): static { $this->port = $port; return $this; } public function getPort(): int { return $this->port; } /** * Sets the TLS/SSL on the socket (disables STARTTLS). * * @return $this */ public function disableTls(): static { $this->tls = false; return $this; } public function isTLS(): bool { return $this->tls; } /** * @return $this */ public function setStreamOptions(array $options): static { $this->streamContextOptions = $options; return $this; } public function getStreamOptions(): array { return $this->streamContextOptions; } /** * Sets the source IP. * * IPv6 addresses should be wrapped in square brackets. * * @return $this */ public function setSourceIp(string $ip): static { $this->sourceIp = $ip; return $this; } /** * Returns the IP used to connect to the destination. */ public function getSourceIp(): ?string { return $this->sourceIp; } public function initialize(): void { $this->url = $this->host.':'.$this->port; if ($this->tls) { $this->url = 'ssl://'.$this->url; } $options = []; if ($this->sourceIp) { $options['socket']['bindto'] = $this->sourceIp.':0'; } if ($this->streamContextOptions) { $options = array_merge($options, $this->streamContextOptions); } // do it unconditionally as it will be used by STARTTLS as well if supported $options['ssl']['crypto_method'] = $options['ssl']['crypto_method'] ?? \STREAM_CRYPTO_METHOD_TLS_CLIENT | \STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT | \STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT; $streamContext = stream_context_create($options); $timeout = $this->getTimeout(); set_error_handler(function ($type, $msg) { throw new TransportException(sprintf('Connection could not be established with host "%s": ', $this->url).$msg); }); try { $this->stream = stream_socket_client($this->url, $errno, $errstr, $timeout, \STREAM_CLIENT_CONNECT, $streamContext); } finally { restore_error_handler(); } stream_set_blocking($this->stream, true); stream_set_timeout($this->stream, $timeout); $this->in = &$this->stream; $this->out = &$this->stream; } public function startTLS(): bool { set_error_handler(function ($type, $msg) { throw new TransportException('Unable to connect with STARTTLS: '.$msg); }); try { return stream_socket_enable_crypto($this->stream, true); } finally { restore_error_handler(); } } public function terminate(): void { if (null !== $this->stream) { fclose($this->stream); } parent::terminate(); } protected function getReadConnectionDescription(): string { return $this->url; } }