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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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 
 /**
  * @see Zend_Mail_Transport_Abstract
  */
 // require_once 'Zend/Mail/Transport/Abstract.php';
 
 
 /**
  * Class for sending eMails via the PHP internal mail() function
  *
  * @category   Zend
  * @package    Zend_Mail
  * @subpackage Transport
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Mail_Transport_Sendmail extends Zend_Mail_Transport_Abstract
 {
     /**
      * Subject
      * @var string
      * @access public
      */
     public $subject = null;
 
 
     /**
      * Config options for sendmail parameters
      *
      * @var string
      */
     public $parameters;
 
     /**
      * EOL character string
      * @var string
      * @access public
      */
     public $EOL = PHP_EOL;
 
     /**
      * error information
      * @var string
      */
     protected $_errstr;
 
     /**
      * Constructor.
      *
      * @param  string|array|Zend_Config $parameters OPTIONAL (Default: null)
      * @return void
      */
     public function __construct($parameters = null)
     {
         if ($parameters instanceof Zend_Config) {
             $parameters = $parameters->toArray();
         }
 
         if (is_array($parameters)) {
             $parameters = implode(' ', $parameters);
         }
 
         $this->parameters = $parameters;
     }
 
 
     /**
      * Send mail using PHP native mail()
      *
      * @access public
      * @return void
      * @throws Zend_Mail_Transport_Exception if parameters is set
      *         but not a string
      * @throws Zend_Mail_Transport_Exception on mail() failure
      */
     public function _sendMail()
     {
         if ($this->parameters === null) {
             set_error_handler(array($this, '_handleMailErrors'));
             $result = mail(
                 $this->recipients,
                 $this->_mail->getSubject(),
                 $this->body,
                 $this->header);
             restore_error_handler();
         } else {
             if(!is_string($this->parameters)) {
                 /**
                  * @see Zend_Mail_Transport_Exception
                  *
                  * Exception is thrown here because
                  * $parameters is a public property
                  */
                 // require_once 'Zend/Mail/Transport/Exception.php';
                 throw new Zend_Mail_Transport_Exception(
                     'Parameters were set but are not a string'
                 );
             }
 
             set_error_handler(array($this, '_handleMailErrors'));
             $result = mail(
                 $this->recipients,
                 $this->_mail->getSubject(),
                 $this->body,
                 $this->header,
                 $this->parameters);
             restore_error_handler();
         }
 
         if ($this->_errstr !== null || !$result) {
             /**
              * @see Zend_Mail_Transport_Exception
              */
             // require_once 'Zend/Mail/Transport/Exception.php';
             throw new Zend_Mail_Transport_Exception('Unable to send mail. ' . $this->_errstr);
         }
     }
 
 
     /**
      * Format and fix headers
      *
      * mail() uses its $to and $subject arguments to set the To: and Subject:
      * headers, respectively. This method strips those out as a sanity check to
      * prevent duplicate header entries.
      *
      * @access  protected
      * @param   array $headers
      * @return  void
      * @throws  Zend_Mail_Transport_Exception
      */
     protected function _prepareHeaders($headers)
     {
         if (!$this->_mail) {
             /**
              * @see Zend_Mail_Transport_Exception
              */
             // require_once 'Zend/Mail/Transport/Exception.php';
             throw new Zend_Mail_Transport_Exception('_prepareHeaders requires a registered Zend_Mail object');
         }
 
         // mail() uses its $to parameter to set the To: header, and the $subject
         // parameter to set the Subject: header. We need to strip them out.
         if (0 === strpos(PHP_OS, 'WIN')) {
             // If the current recipients list is empty, throw an error
             if (empty($this->recipients)) {
                 /**
                  * @see Zend_Mail_Transport_Exception
                  */
                 // require_once 'Zend/Mail/Transport/Exception.php';
                 throw new Zend_Mail_Transport_Exception('Missing To addresses');
             }
         } else {
             // All others, simply grab the recipients and unset the To: header
             if (!isset($headers['To'])) {
                 /**
                  * @see Zend_Mail_Transport_Exception
                  */
                 // require_once 'Zend/Mail/Transport/Exception.php';
                 throw new Zend_Mail_Transport_Exception('Missing To header');
             }
 
             unset($headers['To']['append']);
             $this->recipients = implode(',', $headers['To']);
         }
 
         // Remove recipient header
         unset($headers['To']);
 
         // Remove subject header, if present
         if (isset($headers['Subject'])) {
             unset($headers['Subject']);
         }
 
         // Prepare headers
         parent::_prepareHeaders($headers);
 
         // Fix issue with empty blank line ontop when using Sendmail Trnasport
         $this->header = rtrim($this->header);
     }
 
     /**
      * Temporary error handler for PHP native mail().
      *
      * @param int    $errno
      * @param string $errstr
      * @param string $errfile
      * @param string $errline
      * @param array  $errcontext
      * @return true
      */
     public function _handleMailErrors($errno, $errstr, $errfile = null, $errline = null, array $errcontext = null)
     {
         $this->_errstr = $errstr;
         return true;
     }
 
 }