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<?php
namespace Laminas\Mail\Protocol;
use Laminas\Stdlib\ErrorHandler;
/**
* https://bugs.php.net/bug.php?id=69195
*/
trait ProtocolTrait
{
/**
* If set to true, do not validate the SSL certificate
* @var null|bool
*/
protected $novalidatecert;
public function getCryptoMethod(): int
{
// Allow the best TLS version(s) we can
$cryptoMethod = STREAM_CRYPTO_METHOD_TLS_CLIENT;
// PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
// so add them back in manually if we can
if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
$cryptoMethod |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
$cryptoMethod |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
}
return $cryptoMethod;
}
/**
* Do not validate SSL certificate
*
* @todo Update to return self when minimum supported PHP version is 7.4+
* @param bool $novalidatecert Set to true to disable certificate validation
* @return $this
*/
public function setNoValidateCert(bool $novalidatecert)
{
$this->novalidatecert = $novalidatecert;
return $this;
}
/**
* Should we validate SSL certificate?
*
* @return bool
*/
public function validateCert(): bool
{
return ! $this->novalidatecert;
}
/**
* Prepare socket options
*
* @return array
*/
private function prepareSocketOptions(): array
{
return $this->novalidatecert
? [
'ssl' => [
'verify_peer_name' => false,
'verify_peer' => false,
],
]
: [];
}
/**
* Setup connection socket
*
* @param string $host hostname or IP address of IMAP server
* @param int|null $port of IMAP server, default is 143 (993 for ssl)
* @param int $timeout timeout in seconds for initiating session
* @return resource The socket created.
* @throws Exception\RuntimeException If unable to connect to host.
*/
protected function setupSocket(
string $transport,
string $host,
?int $port,
int $timeout
) {
ErrorHandler::start();
$socket = stream_socket_client(
sprintf('%s://%s:%d', $transport, $host, $port),
$errno,
$errstr,
$timeout,
STREAM_CLIENT_CONNECT,
stream_context_create($this->prepareSocketOptions())
);
$error = ErrorHandler::stop();
if (! $socket) {
throw new Exception\RuntimeException(sprintf(
'cannot connect to host%s',
$error ? sprintf('; error = %s (errno = %d )', $error->getMessage(), $error->getCode()) : ''
), 0, $error);
}
if (false === stream_set_timeout($socket, $timeout)) {
throw new Exception\RuntimeException('Could not set stream timeout');
}
return $socket;
}
}