From 3412e50b54e3daac8745234e21ab6e72be0ed165 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Wed, 04 Jun 2014 11:20:33 -0400
Subject: [PATCH] Fix attachment menu structure and aria-attributes

---
 program/lib/Mail/mime.php | 1416 ++++++++++++++++++++++++++++++++++++++++++----------------
 1 files changed, 1,025 insertions(+), 391 deletions(-)

diff --git a/program/lib/Mail/mime.php b/program/lib/Mail/mime.php
index 9388a65..e079af7 100644
--- a/program/lib/Mail/mime.php
+++ b/program/lib/Mail/mime.php
@@ -1,137 +1,221 @@
 <?php
-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
-// +-----------------------------------------------------------------------+
-// | Copyright (c) 2002-2003  Richard Heyes                                |
-// | Copyright (c) 2003-2005  The PHP Group                                |
-// | All rights reserved.                                                  |
-// |                                                                       |
-// | Redistribution and use in source and binary forms, with or without    |
-// | modification, are permitted provided that the following conditions    |
-// | are met:                                                              |
-// |                                                                       |
-// | o Redistributions of source code must retain the above copyright      |
-// |   notice, this list of conditions and the following disclaimer.       |
-// | o Redistributions in binary form must reproduce the above copyright   |
-// |   notice, this list of conditions and the following disclaimer in the |
-// |   documentation and/or other materials provided with the distribution.|
-// | o The names of the authors may not be used to endorse or promote      |
-// |   products derived from this software without specific prior written  |
-// |   permission.                                                         |
-// |                                                                       |
-// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   |
-// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     |
-// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
-// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT  |
-// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
-// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT      |
-// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
-// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
-// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT   |
-// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
-// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  |
-// |                                                                       |
-// +-----------------------------------------------------------------------+
-// | Author: Richard Heyes <richard@phpguru.org>                           |
-// |         Tomas V.V.Cox <cox@idecnet.com> (port to PEAR)                |
-// +-----------------------------------------------------------------------+
-//
-// $Id$
+/**
+ * The Mail_Mime class is used to create MIME E-mail messages
+ *
+ * The Mail_Mime class provides an OO interface to create MIME
+ * enabled email messages. This way you can create emails that
+ * contain plain-text bodies, HTML bodies, attachments, inline
+ * images and specific headers.
+ *
+ * Compatible with PHP versions 4 and 5
+ *
+ * LICENSE: This LICENSE is in the BSD license style.
+ * Copyright (c) 2002-2003, Richard Heyes <richard@phpguru.org>
+ * Copyright (c) 2003-2006, PEAR <pear-group@php.net>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - Neither the name of the authors, nor the names of its contributors 
+ *   may be used to endorse or promote products derived from this 
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @category  Mail
+ * @package   Mail_Mime
+ * @author    Richard Heyes  <richard@phpguru.org>
+ * @author    Tomas V.V. Cox <cox@idecnet.com>
+ * @author    Cipriano Groenendal <cipri@php.net>
+ * @author    Sean Coates <sean@php.net>
+ * @author    Aleksander Machniak <alec@php.net>
+ * @copyright 2003-2006 PEAR <pear-group@php.net>
+ * @license   http://www.opensource.org/licenses/bsd-license.php BSD License
+ * @version   CVS: $Id$
+ * @link      http://pear.php.net/package/Mail_mime
+ *
+ *            This class is based on HTML Mime Mail class from
+ *            Richard Heyes <richard@phpguru.org> which was based also
+ *            in the mime_mail.class by Tobias Ratschiller <tobias@dnet.it>
+ *            and Sascha Schumann <sascha@schumann.cx>
+ */
 
-require_once('PEAR.php');
-require_once('Mail/mimePart.php');
 
 /**
- * Mime mail composer class. Can handle: text and html bodies, embedded html
- * images and attachments.
- * Documentation and examples of this class are avaible here:
- * http://pear.php.net/manual/
+ * require PEAR
  *
- * @notes This class is based on HTML Mime Mail class from
- *   Richard Heyes <richard@phpguru.org> which was based also
- *   in the mime_mail.class by Tobias Ratschiller <tobias@dnet.it> and
- *   Sascha Schumann <sascha@schumann.cx>
+ * This package depends on PEAR to raise errors.
+ */
+require_once 'PEAR.php';
+
+/**
+ * require Mail_mimePart
  *
- * @author   Richard Heyes <richard.heyes@heyes-computing.net>
- * @author   Tomas V.V.Cox <cox@idecnet.com>
- * @package  Mail
- * @access   public
+ * Mail_mimePart contains the code required to
+ * create all the different parts a mail can
+ * consist of.
+ */
+require_once 'Mail/mimePart.php';
+
+
+/**
+ * The Mail_Mime class provides an OO interface to create MIME
+ * enabled email messages. This way you can create emails that
+ * contain plain-text bodies, HTML bodies, attachments, inline
+ * images and specific headers.
+ *
+ * @category  Mail
+ * @package   Mail_Mime
+ * @author    Richard Heyes  <richard@phpguru.org>
+ * @author    Tomas V.V. Cox <cox@idecnet.com>
+ * @author    Cipriano Groenendal <cipri@php.net>
+ * @author    Sean Coates <sean@php.net>
+ * @copyright 2003-2006 PEAR <pear-group@php.net>
+ * @license   http://www.opensource.org/licenses/bsd-license.php BSD License
+ * @version   Release: @package_version@
+ * @link      http://pear.php.net/package/Mail_mime
  */
 class Mail_mime
 {
     /**
      * Contains the plain text part of the email
+     *
      * @var string
+     * @access private
      */
     var $_txtbody;
+
     /**
      * Contains the html part of the email
+     *
      * @var string
+     * @access private
      */
     var $_htmlbody;
-    /**
-     * contains the mime encoded text
-     * @var string
-     */
-    var $_mime;
-    /**
-     * contains the multipart content
-     * @var string
-     */
-    var $_multipart;
+
     /**
      * list of the attached images
+     *
      * @var array
+     * @access private
      */
     var $_html_images = array();
+
     /**
      * list of the attachements
+     *
      * @var array
+     * @access private
      */
     var $_parts = array();
-    /**
-     * Build parameters
-     * @var array
-     */
-    var $_build_params = array();
+
     /**
      * Headers for the mail
+     *
      * @var array
+     * @access private
      */
     var $_headers = array();
-    /**
-     * End Of Line sequence (for serialize)
-     * @var string
-     */
-    var $_eol;
 
+    /**
+     * Build parameters
+     *
+     * @var array
+     * @access private
+     */
+    var $_build_params = array(
+        // What encoding to use for the headers
+        // Options: quoted-printable or base64
+        'head_encoding' => 'quoted-printable',
+        // What encoding to use for plain text
+        // Options: 7bit, 8bit, base64, or quoted-printable
+        'text_encoding' => 'quoted-printable',
+        // What encoding to use for html
+        // Options: 7bit, 8bit, base64, or quoted-printable
+        'html_encoding' => 'quoted-printable',
+        // The character set to use for html
+        'html_charset'  => 'ISO-8859-1',
+        // The character set to use for text
+        'text_charset'  => 'ISO-8859-1',
+        // The character set to use for headers
+        'head_charset'  => 'ISO-8859-1',
+        // End-of-line sequence
+        'eol'           => "\r\n",
+        // Delay attachment files IO until building the message
+        'delay_file_io' => false
+    );
 
     /**
      * Constructor function
      *
+     * @param mixed $params Build parameters that change the way the email
+     *                      is built. Should be an associative array.
+     *                      See $_build_params.
+     *
+     * @return void
      * @access public
      */
-    function Mail_mime($crlf = "\r\n")
+    function Mail_mime($params = array())
     {
-        $this->_setEOL($crlf);
-        $this->_build_params = array(
-                                     'head_encoding' => 'quoted-printable',
-                                     'text_encoding' => '7bit',
-                                     'html_encoding' => 'quoted-printable',
-                                     '7bit_wrap'     => 998,
-                                     'html_charset'  => 'ISO-8859-1',
-                                     'text_charset'  => 'ISO-8859-1',
-                                     'head_charset'  => 'ISO-8859-1'
-                                    );
+        // Backward-compatible EOL setting
+        if (is_string($params)) {
+            $this->_build_params['eol'] = $params;
+        } else if (defined('MAIL_MIME_CRLF') && !isset($params['eol'])) {
+            $this->_build_params['eol'] = MAIL_MIME_CRLF;
+        }
+
+        // Update build parameters
+        if (!empty($params) && is_array($params)) {
+            while (list($key, $value) = each($params)) {
+                $this->_build_params[$key] = $value;
+            }
+        }
     }
 
     /**
-     * Wakeup (unserialize) - re-sets EOL constant
+     * Set build parameter value
      *
-     * @access private
+     * @param string $name  Parameter name
+     * @param string $value Parameter value
+     *
+     * @return void
+     * @access public
+     * @since 1.6.0
      */
-    function __wakeup()
+    function setParam($name, $value)
     {
-        $this->_setEOL($this->_eol);
+        $this->_build_params[$name] = $value;
+    }
+
+    /**
+     * Get build parameter value
+     *
+     * @param string $name Parameter name
+     *
+     * @return mixed Parameter value
+     * @access public
+     * @since 1.6.0
+     */
+    function getParam($name)
+    {
+        return isset($this->_build_params[$name]) ? $this->_build_params[$name] : null;
     }
 
     /**
@@ -140,14 +224,15 @@
      * text/plain part that emails clients who don't support
      * html should show.
      *
-     * @param  string  $data   Either a string or
-     *                         the file name with the contents
-     * @param  bool    $isfile If true the first param should be treated
-     *                         as a file name, else as a string (default)
-     * @param  bool    $append If true the text or file is appended to
-     *                         the existing body, else the old body is
-     *                         overwritten
-     * @return mixed   true on success or PEAR_Error object
+     * @param string $data   Either a string or
+     *                       the file name with the contents
+     * @param bool   $isfile If true the first param should be treated
+     *                       as a file name, else as a string (default)
+     * @param bool   $append If true the text or file is appended to
+     *                       the existing body, else the old body is
+     *                       overwritten
+     *
+     * @return mixed         True on success or PEAR_Error object
      * @access public
      */
     function setTXTBody($data, $isfile = false, $append = false)
@@ -160,7 +245,7 @@
             }
         } else {
             $cont = $this->_file2str($data);
-            if (PEAR::isError($cont)) {
+            if ($this->_isError($cont)) {
                 return $cont;
             }
             if (!$append) {
@@ -169,17 +254,31 @@
                 $this->_txtbody .= $cont;
             }
         }
+
         return true;
     }
 
     /**
-     * Adds a html part to the mail
+     * Get message text body
      *
-     * @param  string  $data   Either a string or the file name with the
-     *                         contents
-     * @param  bool    $isfile If true the first param should be treated
-     *                         as a file name, else as a string (default)
-     * @return mixed   true on success or PEAR_Error object
+     * @return string Text body
+     * @access public
+     * @since 1.6.0
+     */
+    function getTXTBody()
+    {
+        return $this->_txtbody;
+    }
+
+    /**
+     * Adds a html part to the mail.
+     *
+     * @param string $data   Either a string or the file name with the
+     *                       contents
+     * @param bool   $isfile A flag that determines whether $data is a
+     *                       filename, or a string(false, default)
+     *
+     * @return bool          True on success
      * @access public
      */
     function setHTMLBody($data, $isfile = false)
@@ -188,7 +287,7 @@
             $this->_htmlbody = $data;
         } else {
             $cont = $this->_file2str($data);
-            if (PEAR::isError($cont)) {
+            if ($this->_isError($cont)) {
                 return $cont;
             }
             $this->_htmlbody = $cont;
@@ -198,126 +297,192 @@
     }
 
     /**
+     * Get message HTML body
+     *
+     * @return string HTML body
+     * @access public
+     * @since 1.6.0
+     */
+    function getHTMLBody()
+    {
+        return $this->_htmlbody;
+    }
+
+    /**
      * Adds an image to the list of embedded images.
      *
-     * @param  string  $file       The image file name OR image data itself
-     * @param  string  $c_type     The content type
-     * @param  string  $name       The filename of the image.
-     *                             Only use if $file is the image data
-     * @param  bool    $isfilename Whether $file is a filename or not
-     *                             Defaults to true
-     * @return mixed   true on success or PEAR_Error object
+     * @param string $file       The image file name OR image data itself
+     * @param string $c_type     The content type
+     * @param string $name       The filename of the image.
+     *                           Only used if $file is the image data.
+     * @param bool   $isfile     Whether $file is a filename or not.
+     *                           Defaults to true
+     * @param string $content_id Desired Content-ID of MIME part
+     *                           Defaults to generated unique ID
+     *
+     * @return bool          True on success
      * @access public
      */
-    function addHTMLImage($file, $c_type='application/octet-stream',
-                          $name = '', $isfilename = true)
-    {
-        $filedata = ($isfilename === true) ? $this->_file2str($file)
-                                           : $file;
-        if ($isfilename === true) {
-            $filename = ($name == '' ? $file : $name);
+    function addHTMLImage($file,
+        $c_type='application/octet-stream',
+        $name = '',
+        $isfile = true,
+        $content_id = null
+    ) {
+        $bodyfile = null;
+
+        if ($isfile) {
+            // Don't load file into memory
+            if ($this->_build_params['delay_file_io']) {
+                $filedata = null;
+                $bodyfile = $file;
+            } else {
+                if ($this->_isError($filedata = $this->_file2str($file))) {
+                    return $filedata;
+                }
+            }
+            $filename = ($name ? $name : $file);
         } else {
+            $filedata = $file;
             $filename = $name;
         }
-        if (PEAR::isError($filedata)) {
-            return $filedata;
+
+        if (!$content_id) {
+            $content_id = preg_replace('/[^0-9a-zA-Z]/', '', uniqid(time(), true));
         }
+
         $this->_html_images[] = array(
-                                      'body'   => $filedata,
-                                      'name'   => $filename,
-                                      'c_type' => $c_type,
-                                      'cid'    => md5(uniqid(time()))
-                                     );
+            'body'      => $filedata,
+            'body_file' => $bodyfile,
+            'name'      => $filename,
+            'c_type'    => $c_type,
+            'cid'       => $content_id
+        );
+
         return true;
     }
 
     /**
      * Adds a file to the list of attachments.
      *
-     * @param  string  $file        The file name of the file to attach
-     *                              OR the file contents itself
-     * @param  string  $c_type      The content type
-     * @param  string  $name        The filename of the attachment
-     *                              Only use if $file is the contents
-     * @param  bool    $isFilename  Whether $file is a filename or not
-     *                              Defaults to true
-     * @param  string  $encoding    The type of encoding to use.
-     *                              Defaults to base64.
-     *                              Possible values: 7bit, 8bit, base64, 
-     *                              or quoted-printable.
-     * @param  string  $disposition The content-disposition of this file
-     *                              Defaults to attachment.
-     *                              Possible values: attachment, inline.
-     * @param  string  $charset     The character set used in the filename
-     *                              of this attachment.
-     * @return mixed true on success or PEAR_Error object
+     * @param string $file        The file name of the file to attach
+     *                            or the file contents itself
+     * @param string $c_type      The content type
+     * @param string $name        The filename of the attachment
+     *                            Only use if $file is the contents
+     * @param bool   $isfile      Whether $file is a filename or not. Defaults to true
+     * @param string $encoding    The type of encoding to use. Defaults to base64.
+     *                            Possible values: 7bit, 8bit, base64 or quoted-printable.
+     * @param string $disposition The content-disposition of this file
+     *                            Defaults to attachment.
+     *                            Possible values: attachment, inline.
+     * @param string $charset     The character set of attachment's content.
+     * @param string $language    The language of the attachment
+     * @param string $location    The RFC 2557.4 location of the attachment
+     * @param string $n_encoding  Encoding of the attachment's name in Content-Type
+     *                            By default filenames are encoded using RFC2231 method
+     *                            Here you can set RFC2047 encoding (quoted-printable
+     *                            or base64) instead
+     * @param string $f_encoding  Encoding of the attachment's filename
+     *                            in Content-Disposition header.
+     * @param string $description Content-Description header
+     * @param string $h_charset   The character set of the headers e.g. filename
+     *                            If not specified, $charset will be used
+     * @param array  $add_headers Additional part headers. Array keys can be in form
+     *                            of <header_name>:<parameter_name>
+     *
+     * @return mixed              True on success or PEAR_Error object
      * @access public
      */
-    function addAttachment($file, $c_type = 'application/octet-stream',
-                           $name = '', $isfilename = true,
-                           $encoding = 'base64',
-                           $disposition = 'attachment', $charset = '')
-    {
-        $filedata = ($isfilename === true) ? $this->_file2str($file)
-                                           : $file;
-        if ($isfilename === true) {
+    function addAttachment($file,
+        $c_type      = 'application/octet-stream',
+        $name        = '',
+        $isfile      = true,
+        $encoding    = 'base64',
+        $disposition = 'attachment',
+        $charset     = '',
+        $language    = '',
+        $location    = '',
+        $n_encoding  = null,
+        $f_encoding  = null,
+        $description = '',
+        $h_charset   = null,
+        $add_headers = array()
+    ) {
+        $bodyfile = null;
+
+        if ($isfile) {
+            // Don't load file into memory
+            if ($this->_build_params['delay_file_io']) {
+                $filedata = null;
+                $bodyfile = $file;
+            } else {
+                if ($this->_isError($filedata = $this->_file2str($file))) {
+                    return $filedata;
+                }
+            }
             // Force the name the user supplied, otherwise use $file
-            $filename = (!empty($name)) ? $name : $file;
+            $filename = ($name ? $name : $this->_basename($file));
         } else {
+            $filedata = $file;
             $filename = $name;
         }
-        if (empty($filename)) {
-            $err = PEAR::raiseError(
-              "The supplied filename for the attachment can't be empty"
-            );
-	    return $err;
-        }
-        $filename = basename($filename);
-        if (PEAR::isError($filedata)) {
-            return $filedata;
+
+        if (!strlen($filename)) {
+            $msg = "The supplied filename for the attachment can't be empty";
+            return $this->_raiseError($msg);
         }
 
         $this->_parts[] = array(
-                                'body'        => $filedata,
-                                'name'        => $filename,
-                                'c_type'      => $c_type,
-                                'encoding'    => $encoding,
-                                'charset'     => $charset,
-                                'disposition' => $disposition
-                               );
+            'body'        => $filedata,
+            'body_file'   => $bodyfile,
+            'name'        => $filename,
+            'c_type'      => $c_type,
+            'charset'     => $charset,
+            'encoding'    => $encoding,
+            'language'    => $language,
+            'location'    => $location,
+            'disposition' => $disposition,
+            'description' => $description,
+            'add_headers' => $add_headers,
+            'name_encoding'     => $n_encoding,
+            'filename_encoding' => $f_encoding,
+            'headers_charset'   => $h_charset,
+        );
+
         return true;
     }
 
     /**
      * Get the contents of the given file name as string
      *
-     * @param  string  $file_name  path of file to process
-     * @return string  contents of $file_name
+     * @param string $file_name Path of file to process
+     *
+     * @return string           Contents of $file_name
      * @access private
      */
-    function &_file2str($file_name)
+    function _file2str($file_name)
     {
+        // Check state of file and raise an error properly
+        if (!file_exists($file_name)) {
+            return $this->_raiseError('File not found: ' . $file_name);
+        }
+        if (!is_file($file_name)) {
+            return $this->_raiseError('Not a regular file: ' . $file_name);
+        }
         if (!is_readable($file_name)) {
-            $err = PEAR::raiseError('File is not readable ' . $file_name);
-            return $err;
+            return $this->_raiseError('File is not readable: ' . $file_name);
         }
-        if (!$fd = fopen($file_name, 'rb')) {
-            $err = PEAR::raiseError('Could not open ' . $file_name);
-            return $err;
+
+        // Temporarily reset magic_quotes_runtime and read file contents
+        if ($magic_quote_setting = get_magic_quotes_runtime()) {
+            @ini_set('magic_quotes_runtime', 0);
         }
-        $filesize = filesize($file_name);
-        if ($filesize == 0){
-            $cont =  "";
-        }else{
-            if ($magic_quote_setting = get_magic_quotes_runtime()){
-                set_magic_quotes_runtime(0);
-            }
-            $cont = fread($fd, $filesize);
-            if ($magic_quote_setting){
-                set_magic_quotes_runtime($magic_quote_setting);
-            }
+        $cont = file_get_contents($file_name);
+        if ($magic_quote_setting) {
+            @ini_set('magic_quotes_runtime', $magic_quote_setting);
         }
-        fclose($fd);
+
         return $cont;
     }
 
@@ -325,47 +490,53 @@
      * Adds a text subpart to the mimePart object and
      * returns it during the build process.
      *
-     * @param mixed    The object to add the part to, or
-     *                 null if a new object is to be created.
-     * @param string   The text to add.
-     * @return object  The text mimePart object
+     * @param mixed  &$obj The object to add the part to, or
+     *                     null if a new object is to be created.
+     * @param string $text The text to add.
+     *
+     * @return object      The text mimePart object
      * @access private
      */
-    function &_addTextPart(&$obj, $text)
+    function &_addTextPart(&$obj = null, $text = '')
     {
         $params['content_type'] = 'text/plain';
         $params['encoding']     = $this->_build_params['text_encoding'];
         $params['charset']      = $this->_build_params['text_charset'];
+        $params['eol']          = $this->_build_params['eol'];
+
         if (is_object($obj)) {
             $ret = $obj->addSubpart($text, $params);
-            return $ret;
         } else {
             $ret = new Mail_mimePart($text, $params);
-            return $ret;
         }
+
+        return $ret;
     }
 
     /**
      * Adds a html subpart to the mimePart object and
      * returns it during the build process.
      *
-     * @param  mixed   The object to add the part to, or
-     *                 null if a new object is to be created.
-     * @return object  The html mimePart object
+     * @param mixed &$obj The object to add the part to, or
+     *                    null if a new object is to be created.
+     *
+     * @return object     The html mimePart object
      * @access private
      */
-    function &_addHtmlPart(&$obj)
+    function &_addHtmlPart(&$obj = null)
     {
         $params['content_type'] = 'text/html';
         $params['encoding']     = $this->_build_params['html_encoding'];
         $params['charset']      = $this->_build_params['html_charset'];
+        $params['eol']          = $this->_build_params['eol'];
+
         if (is_object($obj)) {
             $ret = $obj->addSubpart($this->_htmlbody, $params);
-            return $ret;
         } else {
             $ret = new Mail_mimePart($this->_htmlbody, $params);
-            return $ret;
         }
+
+        return $ret;
     }
 
     /**
@@ -373,12 +544,15 @@
      * the initial content-type and returns it during the
      * build process.
      *
-     * @return object  The multipart/mixed mimePart object
+     * @return object The multipart/mixed mimePart object
      * @access private
      */
     function &_addMixedPart()
     {
         $params['content_type'] = 'multipart/mixed';
+        $params['eol']          = $this->_build_params['eol'];
+
+        // Create empty multipart/mixed Mail_mimePart object to return
         $ret = new Mail_mimePart('', $params);
         return $ret;
     }
@@ -388,20 +562,24 @@
      * object (or creates one), and returns it during
      * the build process.
      *
-     * @param  mixed   The object to add the part to, or
-     *                 null if a new object is to be created.
-     * @return object  The multipart/mixed mimePart object
+     * @param mixed &$obj The object to add the part to, or
+     *                    null if a new object is to be created.
+     *
+     * @return object     The multipart/mixed mimePart object
      * @access private
      */
-    function &_addAlternativePart(&$obj)
+    function &_addAlternativePart(&$obj = null)
     {
         $params['content_type'] = 'multipart/alternative';
+        $params['eol']          = $this->_build_params['eol'];
+
         if (is_object($obj)) {
-            return $obj->addSubpart('', $params);
+            $ret = $obj->addSubpart('', $params);
         } else {
             $ret = new Mail_mimePart('', $params);
-            return $ret;
         }
+
+        return $ret;
     }
 
     /**
@@ -409,69 +587,104 @@
      * object (or creates one), and returns it during
      * the build process.
      *
-     * @param mixed    The object to add the part to, or
-     *                 null if a new object is to be created
-     * @return object  The multipart/mixed mimePart object
+     * @param mixed &$obj The object to add the part to, or
+     *                    null if a new object is to be created
+     *
+     * @return object     The multipart/mixed mimePart object
      * @access private
      */
-    function &_addRelatedPart(&$obj)
+    function &_addRelatedPart(&$obj = null)
     {
         $params['content_type'] = 'multipart/related';
+        $params['eol']          = $this->_build_params['eol'];
+
         if (is_object($obj)) {
-            return $obj->addSubpart('', $params);
+            $ret = $obj->addSubpart('', $params);
         } else {
             $ret = new Mail_mimePart('', $params);
-            return $ret;
         }
+
+        return $ret;
     }
 
     /**
      * Adds an html image subpart to a mimePart object
      * and returns it during the build process.
      *
-     * @param  object  The mimePart to add the image to
-     * @param  array   The image information
-     * @return object  The image mimePart object
+     * @param object &$obj  The mimePart to add the image to
+     * @param array  $value The image information
+     *
+     * @return object       The image mimePart object
      * @access private
      */
     function &_addHtmlImagePart(&$obj, $value)
     {
-        $params['content_type'] = $value['c_type'] . '; ' .
-                                  'name="' . $value['name'] . '"';
+        $params['content_type'] = $value['c_type'];
         $params['encoding']     = 'base64';
         $params['disposition']  = 'inline';
-        $params['dfilename']    = $value['name'];
+        $params['filename']     = $value['name'];
         $params['cid']          = $value['cid'];
+        $params['body_file']    = $value['body_file'];
+        $params['eol']          = $this->_build_params['eol'];
+
+        if (!empty($value['name_encoding'])) {
+            $params['name_encoding'] = $value['name_encoding'];
+        }
+        if (!empty($value['filename_encoding'])) {
+            $params['filename_encoding'] = $value['filename_encoding'];
+        }
+
         $ret = $obj->addSubpart($value['body'], $params);
         return $ret;
-	
     }
 
     /**
      * Adds an attachment subpart to a mimePart object
      * and returns it during the build process.
      *
-     * @param  object  The mimePart to add the image to
-     * @param  array   The attachment information
-     * @return object  The image mimePart object
+     * @param object &$obj  The mimePart to add the image to
+     * @param array  $value The attachment information
+     *
+     * @return object       The image mimePart object
      * @access private
      */
     function &_addAttachmentPart(&$obj, $value)
     {
-        $params['dfilename']    = $value['name'];
+        $params['eol']          = $this->_build_params['eol'];
+        $params['filename']     = $value['name'];
         $params['encoding']     = $value['encoding'];
-        if ($value['disposition'] != "inline") {
-            $fname = array("fname" => $value['name']);
-            $fname_enc = $this->_encodeHeaders($fname);
-            $params['dfilename'] = $fname_enc['fname'];
-        }
-        if ($value['charset']) {
-            $params['charset'] = $value['charset'];
-        }
-        $params['content_type'] = $value['c_type'] . '; ' .
-                                  'name="' . $params['dfilename'] . '"';
+        $params['content_type'] = $value['c_type'];
+        $params['body_file']    = $value['body_file'];
         $params['disposition']  = isset($value['disposition']) ? 
                                   $value['disposition'] : 'attachment';
+
+        // content charset
+        if (!empty($value['charset'])) {
+            $params['charset'] = $value['charset'];
+        }
+        // headers charset (filename, description)
+        if (!empty($value['headers_charset'])) {
+            $params['headers_charset'] = $value['headers_charset'];
+        }
+        if (!empty($value['language'])) {
+            $params['language'] = $value['language'];
+        }
+        if (!empty($value['location'])) {
+            $params['location'] = $value['location'];
+        }
+        if (!empty($value['name_encoding'])) {
+            $params['name_encoding'] = $value['name_encoding'];
+        }
+        if (!empty($value['filename_encoding'])) {
+            $params['filename_encoding'] = $value['filename_encoding'];
+        }
+        if (!empty($value['description'])) {
+            $params['description'] = $value['description'];
+        }
+        if (is_array($value['add_headers'])) {
+            $params['headers'] = $value['add_headers'];
+        }
+
         $ret = $obj->addSubpart($value['body'], $params);
         return $ret;
     }
@@ -481,102 +694,209 @@
      * mail delivery method. Note that only the mailpart that is made
      * with Mail_Mime is created. This means that,
      * YOU WILL HAVE NO TO: HEADERS UNLESS YOU SET IT YOURSELF 
-     * using the $xtra_headers parameter!
+     * using the $headers parameter!
      * 
-     * @param  string $separation   The separation etween these two parts.
-     * @param  array  $build_params The Build parameters passed to the
-     *                              &get() function. See &get for more info.
-     * @param  array  $xtra_headers The extra headers that should be passed
-     *                              to the &headers() function.
-     *                              See that function for more info.
-     * @param  bool   $overwrite    Overwrite the existing headers with new.
-     * @return string The complete e-mail.
+     * @param string $separation The separation between these two parts.
+     * @param array  $params     The Build parameters passed to the
+     *                           get() function. See get() for more info.
+     * @param array  $headers    The extra headers that should be passed
+     *                           to the headers() method.
+     *                           See that function for more info.
+     * @param bool   $overwrite  Overwrite the existing headers with new.
+     *
+     * @return mixed The complete e-mail or PEAR error object
      * @access public
      */
-    function getMessage($separation = null, $build_params = null, $xtra_headers = null, $overwrite = false)
-    {
-        if ($separation === null)
-        {
-            $separation = MAIL_MIME_CRLF;
+    function getMessage($separation = null, $params = null, $headers = null,
+        $overwrite = false
+    ) {
+        if ($separation === null) {
+            $separation = $this->_build_params['eol'];
         }
-        $body = $this->get($build_params);
-        $head = $this->txtHeaders($xtra_headers, $overwrite);
-        $mail = $head . $separation . $body;
-        return $mail;
+
+        $body = $this->get($params);
+
+        if ($this->_isError($body)) {
+            return $body;
+        }
+
+        return $this->txtHeaders($headers, $overwrite) . $separation . $body;
     }
 
+    /**
+     * Returns the complete e-mail body, ready to send using an alternative
+     * mail delivery method.
+     * 
+     * @param array $params The Build parameters passed to the
+     *                      get() method. See get() for more info.
+     *
+     * @return mixed The e-mail body or PEAR error object
+     * @access public
+     * @since 1.6.0
+     */
+    function getMessageBody($params = null)
+    {
+        return $this->get($params, null, true);
+    }
+
+    /**
+     * Writes (appends) the complete e-mail into file.
+     * 
+     * @param string $filename  Output file location
+     * @param array  $params    The Build parameters passed to the
+     *                          get() method. See get() for more info.
+     * @param array  $headers   The extra headers that should be passed
+     *                          to the headers() function.
+     *                          See that function for more info.
+     * @param bool   $overwrite Overwrite the existing headers with new.
+     *
+     * @return mixed True or PEAR error object
+     * @access public
+     * @since 1.6.0
+     */
+    function saveMessage($filename, $params = null, $headers = null, $overwrite = false)
+    {
+        // Check state of file and raise an error properly
+        if (file_exists($filename) && !is_writable($filename)) {
+            return $this->_raiseError('File is not writable: ' . $filename);
+        }
+
+        // Temporarily reset magic_quotes_runtime and read file contents
+        if ($magic_quote_setting = get_magic_quotes_runtime()) {
+            @ini_set('magic_quotes_runtime', 0);
+        }
+
+        if (!($fh = fopen($filename, 'ab'))) {
+            return $this->_raiseError('Unable to open file: ' . $filename);
+        }
+
+        // Write message headers into file (skipping Content-* headers)
+        $head = $this->txtHeaders($headers, $overwrite, true);
+        if (fwrite($fh, $head) === false) {
+            return $this->_raiseError('Error writing to file: ' . $filename);
+        }
+
+        fclose($fh);
+
+        if ($magic_quote_setting) {
+            @ini_set('magic_quotes_runtime', $magic_quote_setting);
+        }
+
+        // Write the rest of the message into file
+        $res = $this->get($params, $filename);
+
+        return $res ? $res : true;
+    }
+
+    /**
+     * Writes (appends) the complete e-mail body into file.
+     *
+     * @param string $filename Output file location
+     * @param array  $params   The Build parameters passed to the
+     *                         get() method. See get() for more info.
+     *
+     * @return mixed True or PEAR error object
+     * @access public
+     * @since 1.6.0
+     */
+    function saveMessageBody($filename, $params = null)
+    {
+        // Check state of file and raise an error properly
+        if (file_exists($filename) && !is_writable($filename)) {
+            return $this->_raiseError('File is not writable: ' . $filename);
+        }
+
+        // Temporarily reset magic_quotes_runtime and read file contents
+        if ($magic_quote_setting = get_magic_quotes_runtime()) {
+            @ini_set('magic_quotes_runtime', 0);
+        }
+
+        if (!($fh = fopen($filename, 'ab'))) {
+            return $this->_raiseError('Unable to open file: ' . $filename);
+        }
+
+        // Write the rest of the message into file
+        $res = $this->get($params, $filename, true);
+
+        return $res ? $res : true;
+    }
 
     /**
      * Builds the multipart message from the list ($this->_parts) and
      * returns the mime content.
      *
-     * @param  array  Build parameters that change the way the email
-     *                is built. Should be associative. Can contain:
-     *                head_encoding  -  What encoding to use for the headers. 
-     *                                  Options: quoted-printable or base64
-     *                                  Default is quoted-printable
-     *                text_encoding  -  What encoding to use for plain text
-     *                                  Options: 7bit, 8bit, base64, or quoted-printable
-     *                                  Default is 7bit
-     *                html_encoding  -  What encoding to use for html
-     *                                  Options: 7bit, 8bit, base64, or quoted-printable
-     *                                  Default is quoted-printable
-     *                7bit_wrap      -  Number of characters before text is
-     *                                  wrapped in 7bit encoding
-     *                                  Default is 998
-     *                html_charset   -  The character set to use for html.
-     *                                  Default is iso-8859-1
-     *                text_charset   -  The character set to use for text.
-     *                                  Default is iso-8859-1
-     *                head_charset   -  The character set to use for headers.
-     *                                  Default is iso-8859-1
-     * @return string The mime content
+     * @param array    $params    Build parameters that change the way the email
+     *                            is built. Should be associative. See $_build_params.
+     * @param resource $filename  Output file where to save the message instead of
+     *                            returning it
+     * @param boolean  $skip_head True if you want to return/save only the message
+     *                            without headers
+     *
+     * @return mixed The MIME message content string, null or PEAR error object
      * @access public
      */
-    function &get($build_params = null)
+    function get($params = null, $filename = null, $skip_head = false)
     {
-        if (isset($build_params)) {
-            while (list($key, $value) = each($build_params)) {
+        if (isset($params)) {
+            while (list($key, $value) = each($params)) {
                 $this->_build_params[$key] = $value;
             }
         }
 
-        if (!empty($this->_html_images) AND isset($this->_htmlbody)) {
+        if (isset($this->_headers['From'])) {
+            // Bug #11381: Illegal characters in domain ID
+            if (preg_match('#(@[0-9a-zA-Z\-\.]+)#', $this->_headers['From'], $matches)) {
+                $domainID = $matches[1];
+            } else {
+                $domainID = '@localhost';
+            }
+            foreach ($this->_html_images as $i => $img) {
+                $cid = $this->_html_images[$i]['cid']; 
+                if (!preg_match('#'.preg_quote($domainID).'$#', $cid)) {
+                    $this->_html_images[$i]['cid'] = $cid . $domainID;
+                }
+            }
+        }
+
+        if (count($this->_html_images) && isset($this->_htmlbody)) {
             foreach ($this->_html_images as $key => $value) {
-                $regex = array();
+                $regex   = array();
                 $regex[] = '#(\s)((?i)src|background|href(?-i))\s*=\s*(["\']?)' .
                             preg_quote($value['name'], '#') . '\3#';
                 $regex[] = '#(?i)url(?-i)\(\s*(["\']?)' .
                             preg_quote($value['name'], '#') . '\1\s*\)#';
-                $rep = array();
+
+                $rep   = array();
                 $rep[] = '\1\2=\3cid:' . $value['cid'] .'\3';
-                $rep[] = 'url(\1cid:' . $value['cid'] . '\2)';
-                $this->_htmlbody = preg_replace($regex, $rep,
-                                       $this->_htmlbody
-                                   );
-                $this->_html_images[$key]['name'] = basename($this->_html_images[$key]['name']);
+                $rep[] = 'url(\1cid:' . $value['cid'] . '\1)';
+
+                $this->_htmlbody = preg_replace($regex, $rep, $this->_htmlbody);
+                $this->_html_images[$key]['name']
+                    = $this->_basename($this->_html_images[$key]['name']);
             }
         }
 
+        $this->_checkParams();
+
         $null        = null;
-        $attachments = !empty($this->_parts)                ? true : false;
-        $html_images = !empty($this->_html_images)          ? true : false;
-        $html        = !empty($this->_htmlbody)             ? true : false;
-        $text        = (!$html AND !empty($this->_txtbody)) ? true : false;
+        $attachments = count($this->_parts)                 ? true : false;
+        $html_images = count($this->_html_images)           ? true : false;
+        $html        = strlen($this->_htmlbody)             ? true : false;
+        $text        = (!$html && strlen($this->_txtbody))  ? true : false;
 
         switch (true) {
-        case $text AND !$attachments:
+        case $text && !$attachments:
             $message =& $this->_addTextPart($null, $this->_txtbody);
             break;
 
-        case !$text AND !$html AND $attachments:
+        case !$text && !$html && $attachments:
             $message =& $this->_addMixedPart();
             for ($i = 0; $i < count($this->_parts); $i++) {
                 $this->_addAttachmentPart($message, $this->_parts[$i]);
             }
             break;
 
-        case $text AND $attachments:
+        case $text && $attachments:
             $message =& $this->_addMixedPart();
             $this->_addTextPart($message, $this->_txtbody);
             for ($i = 0; $i < count($this->_parts); $i++) {
@@ -584,7 +904,7 @@
             }
             break;
 
-        case $html AND !$attachments AND !$html_images:
+        case $html && !$attachments && !$html_images:
             if (isset($this->_txtbody)) {
                 $message =& $this->_addAlternativePart($null);
                 $this->_addTextPart($message, $this->_txtbody);
@@ -594,22 +914,53 @@
             }
             break;
 
-        case $html AND !$attachments AND $html_images:
+        case $html && !$attachments && $html_images:
+            // * Content-Type: multipart/alternative;
+            //    * text
+            //    * Content-Type: multipart/related;
+            //       * html
+            //       * image...
             if (isset($this->_txtbody)) {
                 $message =& $this->_addAlternativePart($null);
                 $this->_addTextPart($message, $this->_txtbody);
-                $related =& $this->_addRelatedPart($message);
+
+                $ht =& $this->_addRelatedPart($message);
+                $this->_addHtmlPart($ht);
+                for ($i = 0; $i < count($this->_html_images); $i++) {
+                    $this->_addHtmlImagePart($ht, $this->_html_images[$i]);
+                }
             } else {
+                // * Content-Type: multipart/related;
+                //    * html
+                //    * image...
                 $message =& $this->_addRelatedPart($null);
-                $related =& $message;
+                $this->_addHtmlPart($message);
+                for ($i = 0; $i < count($this->_html_images); $i++) {
+                    $this->_addHtmlImagePart($message, $this->_html_images[$i]);
+                }
             }
-            $this->_addHtmlPart($related);
+            /*
+            // #13444, #9725: the code below was a non-RFC compliant hack
+            // * Content-Type: multipart/related;
+            //    * Content-Type: multipart/alternative;
+            //        * text
+            //        * html
+            //    * image...
+            $message =& $this->_addRelatedPart($null);
+            if (isset($this->_txtbody)) {
+                $alt =& $this->_addAlternativePart($message);
+                $this->_addTextPart($alt, $this->_txtbody);
+                $this->_addHtmlPart($alt);
+            } else {
+                $this->_addHtmlPart($message);
+            }
             for ($i = 0; $i < count($this->_html_images); $i++) {
-                $this->_addHtmlImagePart($related, $this->_html_images[$i]);
+                $this->_addHtmlImagePart($message, $this->_html_images[$i]);
             }
+            */
             break;
 
-        case $html AND $attachments AND !$html_images:
+        case $html && $attachments && !$html_images:
             $message =& $this->_addMixedPart();
             if (isset($this->_txtbody)) {
                 $alt =& $this->_addAlternativePart($message);
@@ -623,7 +974,7 @@
             }
             break;
 
-        case $html AND $attachments AND $html_images:
+        case $html && $attachments && $html_images:
             $message =& $this->_addMixedPart();
             if (isset($this->_txtbody)) {
                 $alt =& $this->_addAlternativePart($message);
@@ -643,16 +994,33 @@
 
         }
 
-        if (isset($message)) {
-            $output = $message->encode();
-            $this->_headers = array_merge($this->_headers,
-                                          $output['headers']);
-            $body = $output['body'];
-            return $body;
+        if (!isset($message)) {
+            return null;
+        }
 
+        // Use saved boundary
+        if (!empty($this->_build_params['boundary'])) {
+            $boundary = $this->_build_params['boundary'];
         } else {
-            $ret = false;
-            return $ret;
+            $boundary = null;
+        }
+
+        // Write output to file
+        if ($filename) {
+            // Append mimePart message headers and body into file
+            $headers = $message->encodeToFile($filename, $boundary, $skip_head);
+            if ($this->_isError($headers)) {
+                return $headers;
+            }
+            $this->_headers = array_merge($this->_headers, $headers);
+            return null;
+        } else {
+            $output = $message->encode($boundary, $skip_head);
+            if ($this->_isError($output)) {
+                return $output;
+            }
+            $this->_headers = array_merge($this->_headers, $output['headers']);
+            return $output['body'];
         }
     }
 
@@ -661,27 +1029,49 @@
      * (MIME-Version and Content-Type). Format of argument is:
      * $array['header-name'] = 'header-value';
      *
-     * @param  array $xtra_headers Assoc array with any extra headers.
-     *                             Optional.
-     * @param  bool  $overwrite    Overwrite already existing headers.
-     * @return array Assoc array with the mime headers
+     * @param array $xtra_headers Assoc array with any extra headers (optional)
+     *                            (Don't set Content-Type for multipart messages here!)
+     * @param bool  $overwrite    Overwrite already existing headers.
+     * @param bool  $skip_content Don't return content headers: Content-Type,
+     *                            Content-Disposition and Content-Transfer-Encoding
+     * 
+     * @return array              Assoc array with the mime headers
      * @access public
      */
-    function &headers($xtra_headers = null, $overwrite = false)
+    function headers($xtra_headers = null, $overwrite = false, $skip_content = false)
     {
-        // Content-Type header should already be present,
-        // So just add mime version header
+        // Add mime version header
         $headers['MIME-Version'] = '1.0';
-        if (isset($xtra_headers)) {
+
+        // Content-Type and Content-Transfer-Encoding headers should already
+        // be present if get() was called, but we'll re-set them to make sure
+        // we got them when called before get() or something in the message
+        // has been changed after get() [#14780]
+        if (!$skip_content) {
+            $headers += $this->_contentHeaders();
+        }
+
+        if (!empty($xtra_headers)) {
             $headers = array_merge($headers, $xtra_headers);
         }
-        if ($overwrite){
+
+        if ($overwrite) {
             $this->_headers = array_merge($this->_headers, $headers);
-        }else{
+        } else {
             $this->_headers = array_merge($headers, $this->_headers);
         }
 
-        $encodedHeaders = $this->_encodeHeaders($this->_headers);
+        $headers = $this->_headers;
+
+        if ($skip_content) {
+            unset($headers['Content-Type']);
+            unset($headers['Content-Transfer-Encoding']);
+            unset($headers['Content-Disposition']);
+        } else if (!empty($this->_build_params['ctype'])) {
+            $headers['Content-Type'] = $this->_build_params['ctype'];
+        }
+
+        $encodedHeaders = $this->_encodeHeaders($headers);
         return $encodedHeaders;
     }
 
@@ -689,27 +1079,98 @@
      * Get the text version of the headers
      * (usefull if you want to use the PHP mail() function)
      *
-     * @param  array   $xtra_headers Assoc array with any extra headers.
-     *                               Optional.
-     * @param  bool    $overwrite    Overwrite the existing heaers with new.
-     * @return string  Plain text headers
+     * @param array $xtra_headers Assoc array with any extra headers (optional)
+     *                            (Don't set Content-Type for multipart messages here!)
+     * @param bool  $overwrite    Overwrite the existing headers with new.
+     * @param bool  $skip_content Don't return content headers: Content-Type,
+     *                            Content-Disposition and Content-Transfer-Encoding
+     *
+     * @return string             Plain text headers
      * @access public
      */
-    function txtHeaders($xtra_headers = null, $overwrite = false)
+    function txtHeaders($xtra_headers = null, $overwrite = false, $skip_content = false)
     {
-        $headers = $this->headers($xtra_headers, $overwrite);
-        $ret = '';
-        foreach ($headers as $key => $val) {
-            $ret .= "$key: $val" . MAIL_MIME_CRLF;
+        $headers = $this->headers($xtra_headers, $overwrite, $skip_content);
+
+        // Place Received: headers at the beginning of the message
+        // Spam detectors often flag messages with it after the Subject: as spam
+        if (isset($headers['Received'])) {
+            $received = $headers['Received'];
+            unset($headers['Received']);
+            $headers = array('Received' => $received) + $headers;
         }
+
+        $ret = '';
+        $eol = $this->_build_params['eol'];
+
+        foreach ($headers as $key => $val) {
+            if (is_array($val)) {
+                foreach ($val as $value) {
+                    $ret .= "$key: $value" . $eol;
+                }
+            } else {
+                $ret .= "$key: $val" . $eol;
+            }
+        }
+
         return $ret;
+    }
+
+    /**
+     * Sets message Content-Type header.
+     * Use it to build messages with various content-types e.g. miltipart/raport
+     * not supported by _contentHeaders() function.
+     *
+     * @param string $type   Type name
+     * @param array  $params Hash array of header parameters
+     *
+     * @return void
+     * @access public
+     * @since 1.7.0
+     */
+    function setContentType($type, $params = array())
+    {
+        $header = $type;
+
+        $eol = !empty($this->_build_params['eol'])
+            ? $this->_build_params['eol'] : "\r\n";
+
+        // add parameters
+        $token_regexp = '#([^\x21\x23-\x27\x2A\x2B\x2D'
+            . '\x2E\x30-\x39\x41-\x5A\x5E-\x7E])#';
+        if (is_array($params)) {
+            foreach ($params as $name => $value) {
+                if ($name == 'boundary') {
+                    $this->_build_params['boundary'] = $value;
+                }
+                if (!preg_match($token_regexp, $value)) {
+                    $header .= ";$eol $name=$value";
+                } else {
+                    $value = addcslashes($value, '\\"');
+                    $header .= ";$eol $name=\"$value\"";
+                }
+            }
+        }
+
+        // add required boundary parameter if not defined
+        if (preg_match('/^multipart\//i', $type)) {
+            if (empty($this->_build_params['boundary'])) {
+                $this->_build_params['boundary'] = '=_' . md5(rand() . microtime());
+            }
+
+            $header .= ";$eol boundary=\"".$this->_build_params['boundary']."\"";
+        }
+
+        $this->_build_params['ctype'] = $header;
     }
 
     /**
      * Sets the Subject header
      *
-     * @param  string $subject String to set the subject to
-     * access  public
+     * @param string $subject String to set the subject to.
+     *
+     * @return void
+     * @access public
      */
     function setSubject($subject)
     {
@@ -719,7 +1180,9 @@
     /**
      * Set an email to the From (the sender) header
      *
-     * @param  string $email The email direction to add
+     * @param string $email The email address to use
+     *
+     * @return void
      * @access public
      */
     function setFrom($email)
@@ -728,10 +1191,30 @@
     }
 
     /**
+     * Add an email to the To header
+     * (multiple calls to this method are allowed)
+     *
+     * @param string $email The email direction to add
+     *
+     * @return void
+     * @access public
+     */
+    function addTo($email)
+    {
+        if (isset($this->_headers['To'])) {
+            $this->_headers['To'] .= ", $email";
+        } else {
+            $this->_headers['To'] = $email;
+        }
+    }
+
+    /**
      * Add an email to the Cc (carbon copy) header
      * (multiple calls to this method are allowed)
      *
-     * @param  string $email The email direction to add
+     * @param string $email The email direction to add
+     *
+     * @return void
      * @access public
      */
     function addCc($email)
@@ -747,7 +1230,9 @@
      * Add an email to the Bcc (blank carbon copy) header
      * (multiple calls to this method are allowed)
      *
-     * @param  string $email The email direction to add
+     * @param string $email The email direction to add
+     *
+     * @return void
      * @access public
      */
     function addBcc($email)
@@ -760,15 +1245,16 @@
     }
 
     /**
-     * Since the PHP send function requires you to specifiy 
+     * Since the PHP send function requires you to specify
      * recipients (To: header) separately from the other
      * headers, the To: header is not properly encoded.
      * To fix this, you can use this public method to 
      * encode your recipients before sending to the send
      * function
      *
-     * @param  string $recipients A comma-delimited list of recipients
-     * @return string Encoded data
+     * @param string $recipients A comma-delimited list of recipients
+     *
+     * @return string            Encoded data
      * @access public
      */
     function encodeRecipients($recipients)
@@ -779,83 +1265,231 @@
     }
 
     /**
-     * Encodes a header as per RFC2047
+     * Encodes headers as per RFC2047
      *
-     * @param  array $input The header data to encode
-     * @return array Encoded data
+     * @param array $input  The header data to encode
+     * @param array $params Extra build parameters
+     *
+     * @return array        Encoded data
      * @access private
      */
-    function _encodeHeaders($input)
+    function _encodeHeaders($input, $params = array())
     {
+        $build_params = $this->_build_params;
+        while (list($key, $value) = each($params)) {
+            $build_params[$key] = $value;
+        }
+
         foreach ($input as $hdr_name => $hdr_value) {
-            if (function_exists('iconv_mime_encode') && preg_match('#[\x80-\xFF]{1}#', $hdr_value)){
-                $imePref = array();
-                if ($this->_build_params['head_encoding'] == 'base64'){
-                    $imePrefs['scheme'] = 'B';
-                }else{
-                    $imePrefs['scheme'] = 'Q';
+            if (is_array($hdr_value)) {
+                foreach ($hdr_value as $idx => $value) {
+                    $input[$hdr_name][$idx] = $this->encodeHeader(
+                        $hdr_name, $value,
+                        $build_params['head_charset'], $build_params['head_encoding']
+                    );
                 }
-                $imePrefs['input-charset']  = $this->_build_params['head_charset'];
-                $imePrefs['output-charset'] = $this->_build_params['head_charset'];
-                $hdr_value = iconv_mime_encode($hdr_name, $hdr_value, $imePrefs);
-                $hdr_value = preg_replace("#^{$hdr_name}\:\ #", "", $hdr_value);
-            }elseif (preg_match('#[\x80-\xFF]{1}#', $hdr_value)){
-                //This header contains non ASCII chars and should be encoded.
-                switch ($this->_build_params['head_encoding']) {
-                case 'base64':
-                    //Base64 encoding has been selected.
-                    
-                    //Generate the header using the specified params and dynamicly 
-                    //determine the maximum length of such strings.
-                    //75 is the value specified in the RFC. The -2 is there so 
-                    //the later regexp doesn't break any of the translated chars.
-                    $prefix = '=?' . $this->_build_params['head_charset'] . '?B?';
-                    $suffix = '?=';
-                    $maxLength = 75 - strlen($prefix . $suffix) - 2;
-                    $maxLength1stLine = $maxLength - strlen($hdr_name);
-                    
-                    //Base64 encode the entire string
-                    $hdr_value = base64_encode($hdr_value);
-
-                    //This regexp will break base64-encoded text at every 
-                    //$maxLength but will not break any encoded letters.
-                    $reg1st = "|.{0,$maxLength1stLine}[^\=][^\=]|";
-                    $reg2nd = "|.{0,$maxLength}[^\=][^\=]|";
-                    break;
-                case 'quoted-printable':
-                default:
-                    //quoted-printable encoding has been selected
-                    
-                    preg_match_all('/(\w*[\x80-\xFF]+\w*)/', $hdr_value, $matches); 
-                    foreach ($matches[1] as $value) { 
-                        $replacement = preg_replace('/([\x80-\xFF])/e', '"=" . strtoupper(dechex(ord("\1")))', $value); 
-                        $hdr_value = str_replace($value, '=?' . $this->_build_params['head_charset'] . '?Q?' . $replacement . '?=', $hdr_value);
-                    }
-                }
+            } else {
+                $input[$hdr_name] = $this->encodeHeader(
+                    $hdr_name, $hdr_value,
+                    $build_params['head_charset'], $build_params['head_encoding']
+                );
             }
-
-            $input[$hdr_name] = $hdr_value;
         }
 
         return $input;
     }
 
     /**
-     * Set the object's end-of-line and define the constant if applicable
+     * Encodes a header as per RFC2047
      *
-     * @param string $eol End Of Line sequence
+     * @param string $name     The header name
+     * @param string $value    The header data to encode
+     * @param string $charset  Character set name
+     * @param string $encoding Encoding name (base64 or quoted-printable)
+     *
+     * @return string          Encoded header data (without a name)
+     * @access public
+     * @since 1.5.3
+     */
+    function encodeHeader($name, $value, $charset, $encoding)
+    {
+        $mime_part = new Mail_mimePart;
+        return $mime_part->encodeHeader(
+            $name, $value, $charset, $encoding, $this->_build_params['eol']
+        );
+    }
+
+    /**
+     * Get file's basename (locale independent) 
+     *
+     * @param string $filename Filename
+     *
+     * @return string          Basename
      * @access private
      */
-    function _setEOL($eol)
+    function _basename($filename)
     {
-        $this->_eol = $eol;
-        if (!defined('MAIL_MIME_CRLF')) {
-            define('MAIL_MIME_CRLF', $this->_eol, true);
+        // basename() is not unicode safe and locale dependent
+        if (stristr(PHP_OS, 'win') || stristr(PHP_OS, 'netware')) {
+            return preg_replace('/^.*[\\\\\\/]/', '', $filename);
+        } else {
+            return preg_replace('/^.*[\/]/', '', $filename);
         }
     }
 
-    
+    /**
+     * Get Content-Type and Content-Transfer-Encoding headers of the message
+     *
+     * @return array Headers array
+     * @access private
+     */
+    function _contentHeaders()
+    {
+        $attachments = count($this->_parts)                 ? true : false;
+        $html_images = count($this->_html_images)           ? true : false;
+        $html        = strlen($this->_htmlbody)             ? true : false;
+        $text        = (!$html && strlen($this->_txtbody))  ? true : false;
+        $headers     = array();
+
+        // See get()
+        switch (true) {
+        case $text && !$attachments:
+            $headers['Content-Type'] = 'text/plain';
+            break;
+
+        case !$text && !$html && $attachments:
+        case $text && $attachments:
+        case $html && $attachments && !$html_images:
+        case $html && $attachments && $html_images:
+            $headers['Content-Type'] = 'multipart/mixed';
+            break;
+
+        case $html && !$attachments && !$html_images && isset($this->_txtbody):
+        case $html && !$attachments && $html_images && isset($this->_txtbody):
+            $headers['Content-Type'] = 'multipart/alternative';
+            break;
+
+        case $html && !$attachments && !$html_images && !isset($this->_txtbody):
+            $headers['Content-Type'] = 'text/html';
+            break;
+
+        case $html && !$attachments && $html_images && !isset($this->_txtbody):
+            $headers['Content-Type'] = 'multipart/related';
+            break;
+
+        default:
+            return $headers;
+        }
+
+        $this->_checkParams();
+
+        $eol = !empty($this->_build_params['eol'])
+            ? $this->_build_params['eol'] : "\r\n";
+
+        if ($headers['Content-Type'] == 'text/plain') {
+            // single-part message: add charset and encoding
+            $charset = 'charset=' . $this->_build_params['text_charset'];
+            // place charset parameter in the same line, if possible
+            // 26 = strlen("Content-Type: text/plain; ")
+            $headers['Content-Type']
+                .= (strlen($charset) + 26 <= 76) ? "; $charset" : ";$eol $charset";
+            $headers['Content-Transfer-Encoding']
+                = $this->_build_params['text_encoding'];
+        } else if ($headers['Content-Type'] == 'text/html') {
+            // single-part message: add charset and encoding
+            $charset = 'charset=' . $this->_build_params['html_charset'];
+            // place charset parameter in the same line, if possible
+            $headers['Content-Type']
+                .= (strlen($charset) + 25 <= 76) ? "; $charset" : ";$eol $charset";
+            $headers['Content-Transfer-Encoding']
+                = $this->_build_params['html_encoding'];
+        } else {
+            // multipart message: and boundary
+            if (!empty($this->_build_params['boundary'])) {
+                $boundary = $this->_build_params['boundary'];
+            } else if (!empty($this->_headers['Content-Type'])
+                && preg_match('/boundary="([^"]+)"/', $this->_headers['Content-Type'], $m)
+            ) {
+                $boundary = $m[1];
+            } else {
+                $boundary = '=_' . md5(rand() . microtime());
+            }
+
+            $this->_build_params['boundary'] = $boundary;
+            $headers['Content-Type'] .= ";$eol boundary=\"$boundary\"";
+        }
+
+        return $headers;
+    }
+
+    /**
+     * Validate and set build parameters
+     *
+     * @return void
+     * @access private
+     */
+    function _checkParams()
+    {
+        $encodings = array('7bit', '8bit', 'base64', 'quoted-printable');
+
+        $this->_build_params['text_encoding']
+            = strtolower($this->_build_params['text_encoding']);
+        $this->_build_params['html_encoding']
+            = strtolower($this->_build_params['html_encoding']);
+
+        if (!in_array($this->_build_params['text_encoding'], $encodings)) {
+            $this->_build_params['text_encoding'] = '7bit';
+        }
+        if (!in_array($this->_build_params['html_encoding'], $encodings)) {
+            $this->_build_params['html_encoding'] = '7bit';
+        }
+
+        // text body
+        if ($this->_build_params['text_encoding'] == '7bit'
+            && !preg_match('/ascii/i', $this->_build_params['text_charset'])
+            && preg_match('/[^\x00-\x7F]/', $this->_txtbody)
+        ) {
+            $this->_build_params['text_encoding'] = 'quoted-printable';
+        }
+        // html body
+        if ($this->_build_params['html_encoding'] == '7bit'
+            && !preg_match('/ascii/i', $this->_build_params['html_charset'])
+            && preg_match('/[^\x00-\x7F]/', $this->_htmlbody)
+        ) {
+            $this->_build_params['html_encoding'] = 'quoted-printable';
+        }
+    }
+
+    /**
+     * PEAR::isError implementation
+     *
+     * @param mixed $data Object
+     *
+     * @return bool True if object is an instance of PEAR_Error
+     * @access private
+     */
+    function _isError($data)
+    {
+        // PEAR::isError() is not PHP 5.4 compatible (see Bug #19473)
+        if (is_object($data) && is_a($data, 'PEAR_Error')) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * PEAR::raiseError implementation
+     *
+     * @param $message A text error message
+     *
+     * @return PEAR_Error Instance of PEAR_Error
+     * @access private
+     */
+    function _raiseError($message)
+    {
+        // PEAR::raiseError() is not PHP 5.4 compatible
+        return new PEAR_Error($message);
+    }
 
 } // End of class
-?>
-

--
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