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<?php
/**
* The Mail_mimePart class is used to create MIME E-mail messages
*
* This class enables you to manipulate and build a mime email
* from the ground up. The Mail_Mime class is a userfriendly api
* to this class for people who aren't interested in the internals
* of mime mail.
* This class however allows full control over the email.
*
* 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 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 CVS: $Id: mimePart.php 514 2007-03-21 09:54:10Z thomasb $
* @link http://pear.php.net/package/Mail_mime
*/
/**
* The Mail_mimePart class is used to create MIME E-mail messages
*
* This class enables you to manipulate and build a mime email
* from the ground up. The Mail_Mime class is a userfriendly api
* to this class for people who aren't interested in the internals
* of mime mail.
* This class however allows full control over the email.
*
* @category Mail
* @package Mail_Mime
* @author Richard Heyes <richard@phpguru.org>
* @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_mimePart {
/**
* The encoding type of this part
*
* @var string
* @access private
*/
var $_encoding;
/**
* An array of subparts
*
* @var array
* @access private
*/
var $_subparts;
/**
* The output of this part after being built
*
* @var string
* @access private
*/
var $_encoded;
/**
* Headers for this part
*
* @var array
* @access private
*/
var $_headers;
/**
* The body of this part (not encoded)
*
* @var string
* @access private
*/
var $_body;
/**
* Constructor.
*
* Sets up the object.
*
* @param $body - The body of the mime part if any.
* @param $params - An associative array of parameters:
* content_type - The content type for this part eg multipart/mixed
* encoding - The encoding to use, 7bit, 8bit, base64, or quoted-printable
* cid - Content ID to apply
* disposition - Content disposition, inline or attachment
* dfilename - Optional filename parameter for content disposition
* description - Content description
* charset - Character set to use
* @access public
*/
function Mail_mimePart($body = '', $params = array())
{
if (!defined('MAIL_MIMEPART_CRLF')) {
define('MAIL_MIMEPART_CRLF', defined('MAIL_MIME_CRLF') ? MAIL_MIME_CRLF : "\r\n", TRUE);
}
foreach ($params as $key => $value) {
switch ($key) {
case 'content_type':
$headers['Content-Type'] = $value . (isset($charset) ? '; charset="' . $charset . '"' : '');
break;
case 'encoding':
$this->_encoding = $value;
$headers['Content-Transfer-Encoding'] = $value;
break;
case 'cid':
$headers['Content-ID'] = '<' . $value . '>';
break;
case 'disposition':
$headers['Content-Disposition'] = $value . (isset($dfilename) ? '; filename="' . $dfilename . '"' : '');
break;
case 'dfilename':
if (isset($headers['Content-Disposition'])) {
$headers['Content-Disposition'] .= '; filename="' . $value . '"';
} else {
$dfilename = $value;
}
break;
case 'description':
$headers['Content-Description'] = $value;
break;
case 'charset':
if (isset($headers['Content-Type'])) {
$headers['Content-Type'] .= '; charset="' . $value . '"';
} else {
$charset = $value;
}
break;
}
}
// Default content-type
if (!isset($headers['Content-Type'])) {
$headers['Content-Type'] = 'text/plain';
}
//Default encoding
if (!isset($this->_encoding)) {
$this->_encoding = '7bit';
}
// Assign stuff to member variables
$this->_encoded = array();
$this->_headers = $headers;
$this->_body = $body;
}
/**
* encode()
*
* Encodes and returns the email. Also stores
* it in the encoded member variable
*
* @return An associative array containing two elements,
* body and headers. The headers element is itself
* an indexed array.
* @access public
*/
function encode()
{
$encoded =& $this->_encoded;
if (!empty($this->_subparts)) {
srand((double)microtime()*1000000);
$boundary = '=_' . md5(rand() . microtime());
$this->_headers['Content-Type'] .= ';' . MAIL_MIMEPART_CRLF . "\t" . 'boundary="' . $boundary . '"';
// Add body parts to $subparts
for ($i = 0; $i < count($this->_subparts); $i++) {
$headers = array();
$tmp = $this->_subparts[$i]->encode();
foreach ($tmp['headers'] as $key => $value) {
$headers[] = $key . ': ' . $value;
}
$subparts[] = implode(MAIL_MIMEPART_CRLF, $headers) . MAIL_MIMEPART_CRLF . MAIL_MIMEPART_CRLF . $tmp['body'];
}
$encoded['body'] = '--' . $boundary . MAIL_MIMEPART_CRLF .
implode('--' . $boundary . MAIL_MIMEPART_CRLF, $subparts) .
'--' . $boundary.'--' . MAIL_MIMEPART_CRLF . MAIL_MIMEPART_CRLF;
} else {
$encoded['body'] = $this->_getEncodedData($this->_body, $this->_encoding) . MAIL_MIMEPART_CRLF;
}
// Add headers to $encoded
$encoded['headers'] =& $this->_headers;
return $encoded;
}
/**
* &addSubPart()
*
* Adds a subpart to current mime part and returns
* a reference to it
*
* @param $body The body of the subpart, if any.
* @param $params The parameters for the subpart, same
* as the $params argument for constructor.
* @return A reference to the part you just added. It is
* crucial if using multipart/* in your subparts that
* you use =& in your script when calling this function,
* otherwise you will not be able to add further subparts.
* @access public
*/
function &addSubPart($body, $params)
{
$this->_subparts[] = new Mail_mimePart($body, $params);
return $this->_subparts[count($this->_subparts) - 1];
}
/**
* _getEncodedData()
*
* Returns encoded data based upon encoding passed to it
*
* @param $data The data to encode.
* @param $encoding The encoding type to use, 7bit, base64,
* or quoted-printable.
* @access private
*/
function _getEncodedData($data, $encoding)
{
switch ($encoding) {
case '8bit':
case '7bit':
return $data;
break;
case 'quoted-printable':
return $this->_quotedPrintableEncode($data);
break;
case 'base64':
return rtrim(chunk_split(base64_encode($data), 76, MAIL_MIMEPART_CRLF));
break;
default:
return $data;
}
}
/**
* quotedPrintableEncode()
*
* Encodes data to quoted-printable standard.
*
* @param $input The data to encode
* @param $line_max Optional max line length. Should
* not be more than 76 chars
*
* @access private
*/
function _quotedPrintableEncode($input , $line_max = 76)
{
$lines = preg_split("/\r?\n/", $input);
$eol = MAIL_MIMEPART_CRLF;
$escape = '=';
$output = '';
while(list(, $line) = each($lines)){
$line = preg_split('||', $line, -1, PREG_SPLIT_NO_EMPTY);
$linlen = count($line);
$newline = '';
for ($i = 0; $i < $linlen; $i++) {
$char = $line[$i];
$dec = ord($char);
if (($dec == 32) AND ($i == ($linlen - 1))){ // convert space at eol only
$char = '=20';
} elseif(($dec == 9) AND ($i == ($linlen - 1))) { // convert tab at eol only
$char = '=09';
} elseif($dec == 9) {
; // Do nothing if a tab.
} elseif(($dec == 61) OR ($dec < 32 ) OR ($dec > 126)) {
$char = $escape . strtoupper(sprintf('%02s', dechex($dec)));
}
if ((strlen($newline) + strlen($char)) >= $line_max) { // MAIL_MIMEPART_CRLF is not counted
$output .= $newline . $escape . $eol; // soft line break; " =\r\n" is okay
$newline = '';
}
$newline .= $char;
} // end of for
$output .= $newline . $eol;
}
$output = substr($output, 0, -1 * strlen($eol)); // Don't want last crlf
return $output;
}
} // End of class
