<?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) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**
* @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) 2005-2014 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 . ';'
. $this->EOL
. " " . 'boundary="' . $boundary . '"'
);
$this->boundary = $boundary;
}
$this->_headers['MIME-Version'] = array('1.0');
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();
}
}