/**
  * set mail body
  *
  * @param Expressomail_mail $_mail
  * @param Expressomail_Model_Message $_message
  */
 protected function _setMailBody(Expressomail_mail $_mail, Expressomail_Model_Message $_message)
 {
     if ($_message->content_type == Expressomail_Model_Message::CONTENT_TYPE_HTML) {
         // checking embedded images
         $embeddedImages = $this->processEmbeddedImagesInHtmlBody($_message->body);
         // now checking embedded signature base64 image
         $base64Images = $this->processEmbeddedImageSignatureInHtmlBody($_message->body);
         //now checking embed images for reply/forward
         $embeddedImagesReply = $this->processEmbeddedImagesInHtmlBodyForReply($_message->body);
         $cid = array();
         if (count($embeddedImagesReply) > 0) {
             foreach ($embeddedImagesReply as $index => $embeddedImage) {
                 $cid[$index] = $_mail->createCid($embeddedImage['messageId']);
                 $_message->body = str_replace($embeddedImage['match'], 'src="cid:' . $cid[$index] . '"', $_message->body);
             }
         }
         if (count($embeddedImages) > 0) {
             $_message->body = str_ireplace('src="index.php?method=Expressomail.showTempImage&tempImageId=', 'src="cid:', $_message->body);
         }
         if (count($base64Images) > 0) {
             // there should be only one image in the signature
             $signature_cid = $_mail->createCid($base64Images[0][1]);
             $_message->body = preg_replace('/<img id="?user-signature-image-?[0-9]*"? alt="?[^\\"]+"? src="data:image\\/jpeg;base64,[^"]+">/', '<img id="user-signature-image" src="cid:' . $signature_cid . '"/>', $_message->body);
         }
         $_mail->setBodyHtml(Expressomail_Message::addHtmlMarkup($_message->body));
         if (count($embeddedImages) > 0) {
             foreach ($embeddedImages as $embeddedImage) {
                 $file = Tinebase_Core::getTempDir() . '/' . $embeddedImage[1];
                 $image = file_get_contents($file);
                 $_mail->createHtmlRelatedAttachment($image, $embeddedImage[1], 'image/jpg', Zend_Mime::DISPOSITION_INLINE, Zend_Mime::ENCODING_BASE64, $embeddedImage[0]);
             }
         }
         if (count($base64Images) > 0) {
             // again, there should be only one image in the signature
             $image = base64_decode($base64Images[0][1]);
             $_mail->createHtmlRelatedAttachment($image, $signature_cid, 'image/jpg', Zend_Mime::DISPOSITION_INLINE, Zend_Mime::ENCODING_BASE64, $base64Images[0][0]);
         }
         if (count($embeddedImagesReply) > 0) {
             foreach ($embeddedImagesReply as $index => $embeddedImage) {
                 try {
                     $part = Expressomail_Controller_Message::getInstance()->getMessagePart($embeddedImage['messageId'], $embeddedImage['messagePart']);
                     $image = base64_decode(stream_get_contents($part->getRawStream()));
                     $_mail->createHtmlRelatedAttachment($image, $cid[$index], $part->type, Zend_Mime::DISPOSITION_INLINE, Zend_Mime::ENCODING_BASE64, $part->filename);
                 } catch (Exception $exc) {
                 }
             }
         }
         if (Tinebase_Core::isLogLevel(Zend_Log::TRACE)) {
             Tinebase_Core::getLogger()->trace(__METHOD__ . '::' . __LINE__ . ' ' . $_mail->getBodyHtml(TRUE));
         }
     }
     $plainBodyText = $_message->getPlainTextBody();
     $_mail->setBodyText($plainBodyText);
     if (Tinebase_Core::isLogLevel(Zend_Log::TRACE)) {
         Tinebase_Core::getLogger()->trace(__METHOD__ . '::' . __LINE__ . ' ' . $_mail->getBodyText(TRUE));
     }
 }