uriParser = $uriParser; } /** * generates mime message * * @param string $contentPlain * @param string $contentHtml * @param Horde_Mime_Part[] $attachments * * @return Horde_Mime_Part */ public function build(?string $contentPlain, ?string $contentHtml, array $attachments, bool $isPgpEncrypted = false): Horde_Mime_Part { if ($isPgpEncrypted === true && isset($contentPlain)) { $basePart = $this->buildPgpPart($contentPlain); } elseif (count($attachments) > 0) { /* * Messages with non embedded attachments need to be wrap in a multipart/mixed part */ $basePart = new Horde_Mime_Part(); $basePart->setType('multipart/mixed'); $basePart[] = $this->buildMessagePart($contentPlain, $contentHtml); foreach ($attachments as $attachment) { $basePart[] = $attachment; } } else { $basePart = $this->buildMessagePart($contentPlain, $contentHtml); } $basePart->isBasePart(true); return $basePart; } /** * generates html/plain message part * * @return Horde_Mime_Part */ private function buildMessagePart(?string $contentPlain, ?string $contentHtml): Horde_Mime_Part { if (isset($contentHtml)) { // determine if content is wrapped properly in a html tag, otherwise we need to wrap it properly if (mb_strpos($contentHtml, ''; } else { $source = ' ' . $contentHtml; } // determine if content has any embedded images $embeddedParts = []; $doc = Parser::parseToDomDocument($source); foreach ($doc->getElementsByTagName('img') as $id => $image) { if (!($image instanceof DOMElement)) { continue; } $src = $image->getAttribute('src'); if ($src === '') { continue; } try { $dataUri = $this->uriParser->parse($src); } catch (InvalidDataUriException $e) { continue; } $part = new Horde_Mime_Part(); $part->setType($dataUri->getMediaType()); $part->setCharset($dataUri->getParameters()['charset']); $part->setName('embedded_image_' . $id); $part->setDisposition('inline'); if ($dataUri->isBase64()) { $part->setTransferEncoding('base64'); } $part->setContents($dataUri->getData()); $cid = $part->setContentId(); $embeddedParts[] = $part; $image->setAttribute('src', 'cid:' . $cid); } $htmlContent = $doc->saveHTML(); $htmlPart = new Horde_Mime_Part(); $htmlPart->setType('text/html'); $htmlPart->setCharset('UTF-8'); $htmlPart->setContents($htmlContent); } if (isset($contentPlain)) { $plainPart = new Horde_Mime_Part(); $plainPart->setType('text/plain'); $plainPart->setCharset('UTF-8'); $plainPart->setContents($contentPlain); } elseif (!isset($contentPlain) && isset($contentHtml)) { $plainPart = new Horde_Mime_Part(); $plainPart->setType('text/plain'); $plainPart->setCharset('UTF-8'); $plainPart->setContents( Horde_Text_Filter::filter($contentHtml, 'Html2text', ['callback' => [$this, 'htmlToTextCallback']]) ); } if (isset($plainPart, $htmlPart)) { /* * RFC1341: Multipart/alternative entities should place the body parts in * increasing order of preference, that is, with the preferred format last. */ $messagePart = new Horde_Mime_Part(); $messagePart->setType('multipart/alternative'); $messagePart[] = $plainPart; $messagePart[] = $htmlPart; } elseif (isset($htmlPart)) { $messagePart = $htmlPart; } elseif (isset($plainPart)) { $messagePart = $plainPart; } else { $messagePart = new Horde_Mime_Part(); } if (isset($embeddedParts) && count($embeddedParts) > 0) { /* * Text parts with embedded content (e.g. inline images, etc) need be wrapped in multipart/related part */ $basePart = new Horde_Mime_Part(); $basePart->setType('multipart/related'); $basePart[] = $messagePart; foreach ($embeddedParts as $part) { $basePart[] = $part; } } else { $basePart = $messagePart; } return $basePart; } /** * generates pgp encrypted message part * * @param string $content * * @return Horde_Mime_Part */ private function buildPgpPart(string $content): Horde_Mime_Part { $contentPart = new Horde_Mime_Part(); $contentPart->setType('application/octet-stream'); $contentPart->setContentTypeParameter('name', 'encrypted.asc'); $contentPart->setTransferEncoding('7bit'); $contentPart->setDisposition('inline'); $contentPart->setDispositionParameter('filename', 'encrypted.asc'); $contentPart->setDescription('OpenPGP encrypted message'); $contentPart->setContents($content); $pgpIdentPart = new Horde_Mime_Part(); $pgpIdentPart->setType('application/pgp-encrypted'); $pgpIdentPart->setTransferEncoding('7bit'); $pgpIdentPart->setDescription('PGP/MIME Versions Identification'); $pgpIdentPart->setContents('Version: 1'); $basePart = new Horde_Mime_Part(); $basePart->setType('multipart/encrypted'); $basePart->setContentTypeParameter('protocol', 'application/pgp-encrypted'); $basePart[] = $pgpIdentPart; $basePart[] = $contentPart; return $basePart; } /** * A callback for Horde_Text_Filter. * * The purpose of this callback is to overwrite the default behavior * of html2text filter to convert

Hello

=> Hello\n\n with *

Hello

=> Hello\n. * * @param DOMDocument $doc * @param DOMNode $node * @return string|null non-null, add this text to the output and skip further processing of the node. */ public function htmlToTextCallback(DOMDocument $doc, DOMNode $node) { if ($node instanceof DOMElement && strtolower($node->tagName) === 'p') { return $node->textContent . "\n"; } return null; } }