Viewing file:  MailgunApiTransport.php (6.55 KB) -rw-r--r--
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Mailer\Bridge\Mailgun\Transport;
use Psr\EventDispatcher\EventDispatcherInterface;
use Psr\Log\LoggerInterface;
use Symfony\Component\Mailer\Envelope;
use Symfony\Component\Mailer\Exception\HttpTransportException;
use Symfony\Component\Mailer\Header\MetadataHeader;
use Symfony\Component\Mailer\Header\TagHeader;
use Symfony\Component\Mailer\SentMessage;
use Symfony\Component\Mailer\Transport\AbstractApiTransport;
use Symfony\Component\Mime\Email;
use Symfony\Component\Mime\Part\Multipart\FormDataPart;
use Symfony\Contracts\HttpClient\Exception\DecodingExceptionInterface;
use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
use Symfony\Contracts\HttpClient\HttpClientInterface;
use Symfony\Contracts\HttpClient\ResponseInterface;
/**
* @author Kevin Verschaeve
*/
class MailgunApiTransport extends AbstractApiTransport
{
private const HOST = 'api.%region_dot%mailgun.net';
private string $key;
private string $domain;
private ?string $region;
public function __construct(string $key, string $domain, string $region = null, HttpClientInterface $client = null, EventDispatcherInterface $dispatcher = null, LoggerInterface $logger = null)
{
$this->key = $key;
$this->domain = $domain;
$this->region = $region;
parent::__construct($client, $dispatcher, $logger);
}
public function __toString(): string
{
return sprintf('mailgun+api://%s?domain=%s', $this->getEndpoint(), $this->domain);
}
protected function doSendApi(SentMessage $sentMessage, Email $email, Envelope $envelope): ResponseInterface
{
$body = new FormDataPart($this->getPayload($email, $envelope));
$headers = [];
foreach ($body->getPreparedHeaders()->all() as $header) {
$headers[] = $header->toString();
}
$endpoint = sprintf('%s/v3/%s/messages', $this->getEndpoint(), urlencode($this->domain));
$response = $this->client->request('POST', 'https://'.$endpoint, [
'auth_basic' => 'api:'.$this->key,
'headers' => $headers,
'body' => $body->bodyToIterable(),
]);
try {
$statusCode = $response->getStatusCode();
$result = $response->toArray(false);
} catch (DecodingExceptionInterface) {
throw new HttpTransportException('Unable to send an email: '.$response->getContent(false).sprintf(' (code %d).', $statusCode), $response);
} catch (TransportExceptionInterface $e) {
throw new HttpTransportException('Could not reach the remote Mailgun server.', $response, 0, $e);
}
if (200 !== $statusCode) {
throw new HttpTransportException('Unable to send an email: '.$result['message'].sprintf(' (code %d).', $statusCode), $response);
}
$sentMessage->setMessageId($result['id']);
return $response;
}
private function getPayload(Email $email, Envelope $envelope): array
{
$headers = $email->getHeaders();
$html = $email->getHtmlBody();
if (null !== $html && \is_resource($html)) {
if (stream_get_meta_data($html)['seekable'] ?? false) {
rewind($html);
}
$html = stream_get_contents($html);
}
[$attachments, $inlines, $html] = $this->prepareAttachments($email, $html);
$payload = [
'from' => $envelope->getSender()->toString(),
'to' => implode(',', $this->stringifyAddresses($this->getRecipients($email, $envelope))),
'subject' => $email->getSubject(),
'attachment' => $attachments,
'inline' => $inlines,
];
if ($emails = $email->getCc()) {
$payload['cc'] = implode(',', $this->stringifyAddresses($emails));
}
if ($emails = $email->getBcc()) {
$payload['bcc'] = implode(',', $this->stringifyAddresses($emails));
}
if ($email->getTextBody()) {
$payload['text'] = $email->getTextBody();
}
if ($html) {
$payload['html'] = $html;
}
$headersToBypass = ['from', 'to', 'cc', 'bcc', 'subject', 'content-type'];
foreach ($headers->all() as $name => $header) {
if (\in_array($name, $headersToBypass, true)) {
continue;
}
if ($header instanceof TagHeader) {
$payload[] = ['o:tag' => $header->getValue()];
continue;
}
if ($header instanceof MetadataHeader) {
$payload['v:'.$header->getKey()] = $header->getValue();
continue;
}
// Check if it is a valid prefix or header name according to Mailgun API
$prefix = substr($name, 0, 2);
if (\in_array($prefix, ['h:', 't:', 'o:', 'v:']) || \in_array($name, ['recipient-variables', 'template', 'amp-html'])) {
$headerName = $header->getName();
} else {
$headerName = 'h:'.$header->getName();
}
$payload[$headerName] = $header->getBodyAsString();
}
return $payload;
}
private function prepareAttachments(Email $email, ?string $html): array
{
$attachments = $inlines = [];
foreach ($email->getAttachments() as $attachment) {
$headers = $attachment->getPreparedHeaders();
if ('inline' === $headers->getHeaderBody('Content-Disposition')) {
// replace the cid with just a file name (the only supported way by Mailgun)
if ($html) {
$filename = $headers->getHeaderParameter('Content-Disposition', 'filename');
$new = basename($filename);
$html = str_replace('cid:'.$filename, 'cid:'.$new, $html);
$p = new \ReflectionProperty($attachment, 'filename');
$p->setValue($attachment, $new);
}
$inlines[] = $attachment;
} else {
$attachments[] = $attachment;
}
}
return [$attachments, $inlines, $html];
}
private function getEndpoint(): ?string
{
$host = $this->host ?: str_replace('%region_dot%', 'us' !== ($this->region ?: 'us') ? $this->region.'.' : '', self::HOST);
return $host.($this->port ? ':'.$this->port : '');
}
}
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