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<?php |
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declare(strict_types=1); |
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namespace Genkgo\Mail; |
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use Genkgo\Mail\Header\GenericHeader; |
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use Genkgo\Mail\Header\HeaderLine; |
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use Genkgo\Mail\Header\HeaderValueParameter; |
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use Genkgo\Mail\Header\MimeVersion; |
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use Genkgo\Mail\Mime\MultiPartInterface; |
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use Genkgo\Mail\Mime\PartInterface; |
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use Genkgo\Mail\Stream\BitEncodedStream; |
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use Genkgo\Mail\Stream\ConcatenatedStream; |
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/** |
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* Class MimeMessageFactory |
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* @package Genkgo\Mail |
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*/ |
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final class MimeMessageFactory |
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{ |
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/** |
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* @param PartInterface $part |
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* @return MessageInterface |
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*/ |
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public function createMessage(PartInterface $part): MessageInterface |
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{ |
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$message = (new GenericMessage()) |
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->withHeader(new MimeVersion()); |
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$part = $this->pickOptimalCharset($part); |
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foreach ($part->getHeaders() as $header) { |
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$message = $message->withHeader($header); |
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} |
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if ($part instanceof MultiPartInterface) { |
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$message = $message->withBody( |
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new ConcatenatedStream( |
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new \ArrayObject([ |
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new BitEncodedStream("This is a multipart message in MIME format.\r\n"), |
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$this->createPartStream($part, false) |
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]) |
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) |
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); |
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} else { |
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$message = $message->withBody($this->createPartStream($part, false)); |
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} |
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return $message; |
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} |
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/** |
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* @param PartInterface $part |
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* @param bool $headers |
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* @return StreamInterface |
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*/ |
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private function createPartStream(PartInterface $part, bool $headers = true): StreamInterface |
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{ |
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$part = $this->pickOptimalCharset($part); |
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$partBody = $part->getBody(); |
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$streams = new \ArrayObject(); |
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if ($headers) { |
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$streams->append(new BitEncodedStream($this->createHeaderLines($part))); |
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$streams->append(new BitEncodedStream("\r\n\r\n")); |
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} |
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$streams->append($partBody); |
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if ($part instanceof MultiPartInterface) { |
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$childParts = $part->getParts(); |
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$boundary = $part->getBoundary(); |
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foreach ($childParts as $childPart) { |
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$streams->append(new BitEncodedStream("\r\n")); |
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$streams->append(new BitEncodedStream('--' . (string) $boundary)); |
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$streams->append(new BitEncodedStream("\r\n")); |
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$streams->append($this->createPartStream($childPart)); |
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} |
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if ($childParts) { |
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$streams->append(new BitEncodedStream('--' . (string) $boundary . '--')); |
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$streams->append(new BitEncodedStream("\r\n")); |
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} |
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} |
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if ($partBody->getSize() !== 0) { |
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$streams->append(new BitEncodedStream("\r\n")); |
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} |
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return new ConcatenatedStream($streams); |
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} |
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/** |
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* @param PartInterface $part |
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* @return string |
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*/ |
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private function createHeaderLines(PartInterface $part): string |
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{ |
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return implode( |
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"\r\n", |
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array_values( |
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array_map( |
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function (HeaderInterface $header) { |
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return (string) (new HeaderLine($header)); |
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}, |
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$part->getHeaders() |
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) |
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) |
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); |
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} |
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/** |
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* @param PartInterface $part |
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* @return PartInterface |
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*/ |
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private function pickOptimalCharset(PartInterface $part): PartInterface |
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{ |
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try { |
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$transferEncoding = (string) $part->getHeader('Content-Transfer-Encoding')->getValue(); |
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} catch (\UnexpectedValueException $e) { |
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return $part; |
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} |
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$contentTypeHeader = $part->getHeader('Content-Type')->getValue(); |
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if ($transferEncoding !== '7bit' || substr((string)$contentTypeHeader, 0, 5) !== 'text/') { |
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return $part; |
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} |
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try { |
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if ($contentTypeHeader->getParameter('charset')->getValue() === 'us-ascii') { |
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return $part; |
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} |
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} catch (\UnexpectedValueException $e) { |
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} |
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return $part->withHeader( |
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new GenericHeader( |
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'Content-Type', |
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(string) $contentTypeHeader->withParameter( |
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new HeaderValueParameter('charset', 'us-ascii') |
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) |
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) |
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); |
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} |
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} |
genkgo /
mail
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