| 148 |
lars |
1 |
<?php
|
|
|
2 |
|
|
|
3 |
/*
|
|
|
4 |
* This file is part of the Symfony package.
|
|
|
5 |
*
|
|
|
6 |
* (c) Fabien Potencier <fabien@symfony.com>
|
|
|
7 |
*
|
|
|
8 |
* For the full copyright and license information, please view the LICENSE
|
|
|
9 |
* file that was distributed with this source code.
|
|
|
10 |
*/
|
|
|
11 |
|
|
|
12 |
namespace Symfony\Component\Mime\Crypto;
|
|
|
13 |
|
|
|
14 |
use Symfony\Component\Mime\Exception\RuntimeException;
|
|
|
15 |
use Symfony\Component\Mime\Message;
|
|
|
16 |
|
|
|
17 |
/**
|
|
|
18 |
* @author Sebastiaan Stok <s.stok@rollerscapes.net>
|
|
|
19 |
*/
|
|
|
20 |
final class SMimeEncrypter extends SMime
|
|
|
21 |
{
|
|
|
22 |
private string|array $certs;
|
|
|
23 |
private int $cipher;
|
|
|
24 |
|
|
|
25 |
/**
|
|
|
26 |
* @param string|string[] $certificate The path (or array of paths) of the file(s) containing the X.509 certificate(s)
|
|
|
27 |
* @param int|null $cipher A set of algorithms used to encrypt the message. Must be one of these PHP constants: https://www.php.net/manual/en/openssl.ciphers.php
|
|
|
28 |
*/
|
|
|
29 |
public function __construct(string|array $certificate, int $cipher = null)
|
|
|
30 |
{
|
|
|
31 |
if (!\extension_loaded('openssl')) {
|
|
|
32 |
throw new \LogicException('PHP extension "openssl" is required to use SMime.');
|
|
|
33 |
}
|
|
|
34 |
|
|
|
35 |
if (\is_array($certificate)) {
|
|
|
36 |
$this->certs = array_map($this->normalizeFilePath(...), $certificate);
|
|
|
37 |
} else {
|
|
|
38 |
$this->certs = $this->normalizeFilePath($certificate);
|
|
|
39 |
}
|
|
|
40 |
|
|
|
41 |
$this->cipher = $cipher ?? \OPENSSL_CIPHER_AES_256_CBC;
|
|
|
42 |
}
|
|
|
43 |
|
|
|
44 |
public function encrypt(Message $message): Message
|
|
|
45 |
{
|
|
|
46 |
$bufferFile = tmpfile();
|
|
|
47 |
$outputFile = tmpfile();
|
|
|
48 |
|
|
|
49 |
$this->iteratorToFile($message->toIterable(), $bufferFile);
|
|
|
50 |
|
|
|
51 |
if (!@openssl_pkcs7_encrypt(stream_get_meta_data($bufferFile)['uri'], stream_get_meta_data($outputFile)['uri'], $this->certs, [], 0, $this->cipher)) {
|
|
|
52 |
throw new RuntimeException(sprintf('Failed to encrypt S/Mime message. Error: "%s".', openssl_error_string()));
|
|
|
53 |
}
|
|
|
54 |
|
|
|
55 |
$mimePart = $this->convertMessageToSMimePart($outputFile, 'application', 'pkcs7-mime');
|
|
|
56 |
$mimePart->getHeaders()
|
|
|
57 |
->addTextHeader('Content-Transfer-Encoding', 'base64')
|
|
|
58 |
->addParameterizedHeader('Content-Disposition', 'attachment', ['name' => 'smime.p7m'])
|
|
|
59 |
;
|
|
|
60 |
|
|
|
61 |
return new Message($message->getHeaders(), $mimePart);
|
|
|
62 |
}
|
|
|
63 |
}
|