64 lines
2.2 KiB
PHP
64 lines
2.2 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Mime\Crypto;
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use Symfony\Component\Mime\Exception\RuntimeException;
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use Symfony\Component\Mime\Message;
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/**
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* @author Sebastiaan Stok <s.stok@rollerscapes.net>
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*/
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final class SMimeEncrypter extends SMime
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{
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private $certs;
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private $cipher;
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/**
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* @param string|string[] $certificate The path (or array of paths) of the file(s) containing the X.509 certificate(s)
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* @param int|null $cipher A set of algorithms used to encrypt the message. Must be one of these PHP constants: https://www.php.net/manual/en/openssl.ciphers.php
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*/
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public function __construct($certificate, int $cipher = null)
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{
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if (!\extension_loaded('openssl')) {
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throw new \LogicException('PHP extension "openssl" is required to use SMime.');
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}
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if (\is_array($certificate)) {
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$this->certs = array_map([$this, 'normalizeFilePath'], $certificate);
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} else {
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$this->certs = $this->normalizeFilePath($certificate);
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}
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$this->cipher = $cipher ?? \OPENSSL_CIPHER_AES_256_CBC;
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}
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public function encrypt(Message $message): Message
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{
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$bufferFile = tmpfile();
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$outputFile = tmpfile();
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$this->iteratorToFile($message->toIterable(), $bufferFile);
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if (!@openssl_pkcs7_encrypt(stream_get_meta_data($bufferFile)['uri'], stream_get_meta_data($outputFile)['uri'], $this->certs, [], 0, $this->cipher)) {
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throw new RuntimeException(sprintf('Failed to encrypt S/Mime message. Error: "%s".', openssl_error_string()));
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}
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$mimePart = $this->convertMessageToSMimePart($outputFile, 'application', 'pkcs7-mime');
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$mimePart->getHeaders()
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->addTextHeader('Content-Transfer-Encoding', 'base64')
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->addParameterizedHeader('Content-Disposition', 'attachment', ['name' => 'smime.p7m'])
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;
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return new Message($message->getHeaders(), $mimePart);
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}
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}
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