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+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category Zend
+ * @package Zend_Mail
+ * @subpackage Transport
+ * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: Abstract.php 8064 2008-02-16 10:58:39Z thomas $
+ */
+
+
+/**
+ * @see Zend_Mime
+ */
+require_once 'Zend/Mime.php';
+
+
+/**
+ * Abstract for sending eMails through different
+ * ways of transport
+ *
+ * @category Zend
+ * @package Zend_Mail
+ * @subpackage Transport
+ * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+abstract class Zend_Mail_Transport_Abstract
+{
+ /**
+ * Mail body
+ * @var string
+ * @access public
+ */
+ public $body = '';
+
+ /**
+ * MIME boundary
+ * @var string
+ * @access public
+ */
+ public $boundary = '';
+
+ /**
+ * Mail header string
+ * @var string
+ * @access public
+ */
+ public $header = '';
+
+ /**
+ * Array of message headers
+ * @var array
+ * @access protected
+ */
+ protected $_headers = array();
+
+ /**
+ * Message is a multipart message
+ * @var boolean
+ * @access protected
+ */
+ protected $_isMultipart = false;
+
+ /**
+ * Zend_Mail object
+ * @var false|Zend_Mail
+ * @access protected
+ */
+ protected $_mail = false;
+
+ /**
+ * Array of message parts
+ * @var array
+ * @access protected
+ */
+ protected $_parts = array();
+
+ /**
+ * Recipients string
+ * @var string
+ * @access public
+ */
+ public $recipients = '';
+
+ /**
+ * EOL character string used by transport
+ * @var string
+ * @access public
+ */
+ public $EOL = "\r\n";
+
+ /**
+ * Send an email independent from the used transport
+ *
+ * The requisite information for the email will be found in the following
+ * properties:
+ *
+ * - {@link $recipients} - list of recipients (string)
+ * - {@link $header} - message header
+ * - {@link $body} - message body
+ */
+ abstract protected function _sendMail();
+
+ /**
+ * Return all mail headers as an array
+ *
+ * If a boundary is given, a multipart header is generated with a
+ * Content-Type of either multipart/alternative or multipart/mixed depending
+ * on the mail parts present in the {@link $_mail Zend_Mail object} present.
+ *
+ * @param string $boundary
+ * @return array
+ */
+ protected function _getHeaders($boundary)
+ {
+ if (null !== $boundary) {
+ // Build multipart mail
+ $type = $this->_mail->getType();
+ if (!$type) {
+ if ($this->_mail->hasAttachments) {
+ $type = Zend_Mime::MULTIPART_MIXED;
+ } elseif ($this->_mail->getBodyText() && $this->_mail->getBodyHtml()) {
+ $type = Zend_Mime::MULTIPART_ALTERNATIVE;
+ } else {
+ $type = Zend_Mime::MULTIPART_MIXED;
+ }
+ }
+
+ $this->_headers['Content-Type'] = array(
+ $type . '; charset="' . $this->_mail->getCharset() . '";'
+ . $this->EOL
+ . " " . 'boundary="' . $boundary . '"'
+ );
+ $this->_headers['MIME-Version'] = array('1.0');
+
+ $this->boundary = $boundary;
+ }
+
+ return $this->_headers;
+ }
+
+ /**
+ * Prepend header name to header value
+ *
+ * @param string $item
+ * @param string $key
+ * @param string $prefix
+ * @static
+ * @access protected
+ * @return void
+ */
+ protected static function _formatHeader(&$item, $key, $prefix)
+ {
+ $item = $prefix . ': ' . $item;
+ }
+
+ /**
+ * Prepare header string for use in transport
+ *
+ * Prepares and generates {@link $header} based on the headers provided.
+ *
+ * @param mixed $headers
+ * @access protected
+ * @return void
+ * @throws Zend_Mail_Transport_Exception if any header lines exceed 998
+ * characters
+ */
+ protected function _prepareHeaders($headers)
+ {
+ if (!$this->_mail) {
+ /**
+ * @see Zend_Mail_Transport_Exception
+ */
+ require_once 'Zend/Mail/Transport/Exception.php';
+ throw new Zend_Mail_Transport_Exception('Missing Zend_Mail object in _mail property');
+ }
+
+ $this->header = '';
+
+ foreach ($headers as $header => $content) {
+ if (isset($content['append'])) {
+ unset($content['append']);
+ $value = implode(',' . $this->EOL . ' ', $content);
+ $this->header .= $header . ': ' . $value . $this->EOL;
+ } else {
+ array_walk($content, array(get_class($this), '_formatHeader'), $header);
+ $this->header .= implode($this->EOL, $content) . $this->EOL;
+ }
+ }
+
+ // Sanity check on headers -- should not be > 998 characters
+ $sane = true;
+ foreach (explode($this->EOL, $this->header) as $line) {
+ if (strlen(trim($line)) > 998) {
+ $sane = false;
+ break;
+ }
+ }
+ if (!$sane) {
+ /**
+ * @see Zend_Mail_Transport_Exception
+ */
+ require_once 'Zend/Mail/Transport/Exception.php';
+ throw new Zend_Mail_Exception('At least one mail header line is too long');
+ }
+ }
+
+ /**
+ * Generate MIME compliant message from the current configuration
+ *
+ * If both a text and HTML body are present, generates a
+ * multipart/alternative Zend_Mime_Part containing the headers and contents
+ * of each. Otherwise, uses whichever of the text or HTML parts present.
+ *
+ * The content part is then prepended to the list of Zend_Mime_Parts for
+ * this message.
+ *
+ * @return void
+ */
+ protected function _buildBody()
+ {
+ if (($text = $this->_mail->getBodyText())
+ && ($html = $this->_mail->getBodyHtml()))
+ {
+ // Generate unique boundary for multipart/alternative
+ $mime = new Zend_Mime(null);
+ $boundaryLine = $mime->boundaryLine($this->EOL);
+ $boundaryEnd = $mime->mimeEnd($this->EOL);
+
+ $text->disposition = false;
+ $html->disposition = false;
+
+ $body = $boundaryLine
+ . $text->getHeaders($this->EOL)
+ . $this->EOL
+ . $text->getContent($this->EOL)
+ . $this->EOL
+ . $boundaryLine
+ . $html->getHeaders($this->EOL)
+ . $this->EOL
+ . $html->getContent($this->EOL)
+ . $this->EOL
+ . $boundaryEnd;
+
+ $mp = new Zend_Mime_Part($body);
+ $mp->type = Zend_Mime::MULTIPART_ALTERNATIVE;
+ $mp->boundary = $mime->boundary();
+
+ $this->_isMultipart = true;
+
+ // Ensure first part contains text alternatives
+ array_unshift($this->_parts, $mp);
+
+ // Get headers
+ $this->_headers = $this->_mail->getHeaders();
+ return;
+ }
+
+ // If not multipart, then get the body
+ if (false !== ($body = $this->_mail->getBodyHtml())) {
+ array_unshift($this->_parts, $body);
+ } elseif (false !== ($body = $this->_mail->getBodyText())) {
+ array_unshift($this->_parts, $body);
+ }
+
+ if (!$body) {
+ /**
+ * @see Zend_Mail_Transport_Exception
+ */
+ require_once 'Zend/Mail/Transport/Exception.php';
+ throw new Zend_Mail_Transport_Exception('No body specified');
+ }
+
+ // Get headers
+ $this->_headers = $this->_mail->getHeaders();
+ $headers = $body->getHeadersArray($this->EOL);
+ foreach ($headers as $header) {
+ // Headers in Zend_Mime_Part are kept as arrays with two elements, a
+ // key and a value
+ $this->_headers[$header[0]] = array($header[1]);
+ }
+ }
+
+ /**
+ * Send a mail using this transport
+ *
+ * @param Zend_Mail $mail
+ * @access public
+ * @return void
+ * @throws Zend_Mail_Transport_Exception if mail is empty
+ */
+ public function send(Zend_Mail $mail)
+ {
+ $this->_isMultipart = false;
+ $this->_mail = $mail;
+ $this->_parts = $mail->getParts();
+ $mime = $mail->getMime();
+
+ // Build body content
+ $this->_buildBody();
+
+ // Determine number of parts and boundary
+ $count = count($this->_parts);
+ $boundary = null;
+ if ($count < 1) {
+ /**
+ * @see Zend_Mail_Transport_Exception
+ */
+ require_once 'Zend/Mail/Transport/Exception.php';
+ throw new Zend_Mail_Transport_Exception('Empty mail cannot be sent');
+ }
+
+ if ($count > 1) {
+ // Multipart message; create new MIME object and boundary
+ $mime = new Zend_Mime($this->_mail->getMimeBoundary());
+ $boundary = $mime->boundary();
+ } elseif ($this->_isMultipart) {
+ // multipart/alternative -- grab boundary
+ $boundary = $this->_parts[0]->boundary;
+ }
+
+ // Determine recipients, and prepare headers
+ $this->recipients = implode(',', $mail->getRecipients());
+ $this->_prepareHeaders($this->_getHeaders($boundary));
+
+ // Create message body
+ // This is done so that the same Zend_Mail object can be used in
+ // multiple transports
+ $message = new Zend_Mime_Message();
+ $message->setParts($this->_parts);
+ $message->setMime($mime);
+ $this->body = $message->generateMessage($this->EOL);
+
+ // Send to transport!
+ $this->_sendMail();
+ }
+}
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