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530 lines
19 KiB
PHP
530 lines
19 KiB
PHP
<?php
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/**
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* The Mail_mimePart class is used to create MIME E-mail messages
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*
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* This class enables you to manipulate and build a mime email
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* from the ground up. The Mail_Mime class is a userfriendly api
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* to this class for people who aren't interested in the internals
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* of mime mail.
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* This class however allows full control over the email.
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*
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* Compatible with PHP versions 4 and 5
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*
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* LICENSE: This LICENSE is in the BSD license style.
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* Copyright (c) 2002-2003, Richard Heyes <richard@phpguru.org>
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* Copyright (c) 2003-2006, PEAR <pear-group@php.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - Neither the name of the authors, nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @category Mail
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* @package Mail_Mime
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* @author Richard Heyes <richard@phpguru.org>
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* @author Cipriano Groenendal <cipri@php.net>
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* @author Sean Coates <sean@php.net>
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* @copyright 2003-2006 PEAR <pear-group@php.net>
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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* @version CVS: $Id$
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* @link http://pear.php.net/package/Mail_mime
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*/
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/**
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* The Mail_mimePart class is used to create MIME E-mail messages
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*
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* This class enables you to manipulate and build a mime email
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|
* from the ground up. The Mail_Mime class is a userfriendly api
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* to this class for people who aren't interested in the internals
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* of mime mail.
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* This class however allows full control over the email.
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*
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* @category Mail
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* @package Mail_Mime
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* @author Richard Heyes <richard@phpguru.org>
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* @author Cipriano Groenendal <cipri@php.net>
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* @author Sean Coates <sean@php.net>
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* @copyright 2003-2006 PEAR <pear-group@php.net>
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Mail_mime
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*/
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class Mail_mimePart {
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/**
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* The encoding type of this part
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*
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* @var string
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* @access private
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*/
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var $_encoding;
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/**
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* An array of subparts
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*
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* @var array
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* @access private
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*/
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var $_subparts;
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/**
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* The output of this part after being built
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*
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* @var string
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* @access private
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*/
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var $_encoded;
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/**
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* Headers for this part
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*
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* @var array
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* @access private
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*/
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var $_headers;
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/**
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* The body of this part (not encoded)
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*
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* @var string
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* @access private
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*/
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var $_body;
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/**
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* Constructor.
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*
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* Sets up the object.
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*
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* @param $body - The body of the mime part if any.
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* @param $params - An associative array of parameters:
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* content_type - The content type for this part eg multipart/mixed
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* encoding - The encoding to use, 7bit, 8bit, base64, or quoted-printable
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* cid - Content ID to apply
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* disposition - Content disposition, inline or attachment
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* dfilename - Optional filename parameter for content disposition
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* description - Content description
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* charset - Character set to use
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* @access public
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*/
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function Mail_mimePart($body = '', $params = array())
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{
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if (!defined('MAIL_MIMEPART_CRLF')) {
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define('MAIL_MIMEPART_CRLF', defined('MAIL_MIME_CRLF') ? MAIL_MIME_CRLF : "\r\n", TRUE);
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}
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$contentType = array();
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$contentDisp = array();
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foreach ($params as $key => $value) {
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switch ($key) {
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case 'content_type':
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$contentType['type'] = $value;
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//$headers['Content-Type'] = $value . (isset($charset) ? '; charset="' . $charset . '"' : '');
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break;
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case 'encoding':
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$this->_encoding = $value;
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$headers['Content-Transfer-Encoding'] = $value;
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break;
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case 'cid':
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$headers['Content-ID'] = '<' . $value . '>';
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break;
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case 'disposition':
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$contentDisp['disp'] = $value;
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break;
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case 'dfilename':
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$contentDisp['filename'] = $value;
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$contentType['name'] = $value;
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break;
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case 'description':
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$headers['Content-Description'] = $value;
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break;
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case 'charset':
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$contentType['charset'] = $value;
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$contentDisp['charset'] = $value;
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break;
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case 'language':
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$contentType['language'] = $value;
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$contentDisp['language'] = $value;
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break;
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case 'location':
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$headers['Content-Location'] = $value;
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break;
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}
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}
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if (isset($contentType['type'])) {
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$headers['Content-Type'] = $contentType['type'];
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if (isset($contentType['charset'])) {
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$headers['Content-Type'] .= "; charset={$contentType['charset']}";
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}
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if (isset($contentType['name'])) {
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$headers['Content-Type'] .= ';' . MAIL_MIMEPART_CRLF;
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$headers['Content-Type'] .=
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$this->_buildHeaderParam('name', $contentType['name'],
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isset($contentType['charset']) ? $contentType['charset'] : 'US-ASCII',
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isset($contentType['language']) ? $contentType['language'] : NULL,
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isset($params['name-encoding']) ? $params['name-encoding'] : NULL);
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}
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}
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if (isset($contentDisp['disp'])) {
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$headers['Content-Disposition'] = $contentDisp['disp'];
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if (isset($contentDisp['filename'])) {
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$headers['Content-Disposition'] .= ';' . MAIL_MIMEPART_CRLF;
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$headers['Content-Disposition'] .=
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$this->_buildHeaderParam('filename', $contentDisp['filename'],
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isset($contentDisp['charset']) ? $contentDisp['charset'] : 'US-ASCII',
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isset($contentDisp['language']) ? $contentDisp['language'] : NULL,
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isset($params['filename-encoding']) ? $params['filename-encoding'] : NULL);
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}
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}
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// Default content-type
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if (!isset($headers['Content-Type'])) {
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$headers['Content-Type'] = 'text/plain';
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}
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//Default encoding
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if (!isset($this->_encoding)) {
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$this->_encoding = '7bit';
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}
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// Assign stuff to member variables
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$this->_encoded = array();
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$this->_headers = $headers;
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$this->_body = $body;
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}
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/**
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* encode()
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*
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* Encodes and returns the email. Also stores
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* it in the encoded member variable
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*
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* @return An associative array containing two elements,
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* body and headers. The headers element is itself
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* an indexed array.
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* @access public
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*/
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function encode()
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{
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$encoded =& $this->_encoded;
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if (count($this->_subparts)) {
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$boundary = '=_' . md5(rand() . microtime());
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$this->_headers['Content-Type'] .= ';' . MAIL_MIMEPART_CRLF . "\t" . 'boundary="' . $boundary . '"';
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// Add body parts to $subparts
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for ($i = 0; $i < count($this->_subparts); $i++) {
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$headers = array();
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$tmp = $this->_subparts[$i]->encode();
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foreach ($tmp['headers'] as $key => $value) {
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$headers[] = $key . ': ' . $value;
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}
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$subparts[] = implode(MAIL_MIMEPART_CRLF, $headers) . MAIL_MIMEPART_CRLF . MAIL_MIMEPART_CRLF . $tmp['body'] . MAIL_MIMEPART_CRLF;
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}
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$encoded['body'] = '--' . $boundary . MAIL_MIMEPART_CRLF .
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implode('--' . $boundary . MAIL_MIMEPART_CRLF , $subparts) .
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'--' . $boundary.'--' . MAIL_MIMEPART_CRLF;
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} else {
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$encoded['body'] = $this->_getEncodedData($this->_body, $this->_encoding);
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}
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// Add headers to $encoded
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$encoded['headers'] =& $this->_headers;
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return $encoded;
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}
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/**
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* &addSubPart()
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*
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* Adds a subpart to current mime part and returns
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* a reference to it
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*
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* @param $body The body of the subpart, if any.
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* @param $params The parameters for the subpart, same
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* as the $params argument for constructor.
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* @return A reference to the part you just added. It is
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* crucial if using multipart/* in your subparts that
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* you use =& in your script when calling this function,
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* otherwise you will not be able to add further subparts.
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* @access public
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*/
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function &addSubPart($body, $params)
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{
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$this->_subparts[] = new Mail_mimePart($body, $params);
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return $this->_subparts[count($this->_subparts) - 1];
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}
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/**
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* _getEncodedData()
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*
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* Returns encoded data based upon encoding passed to it
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*
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* @param $data The data to encode.
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* @param $encoding The encoding type to use, 7bit, base64,
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* or quoted-printable.
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* @access private
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*/
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function _getEncodedData($data, $encoding)
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{
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switch ($encoding) {
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case '8bit':
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case '7bit':
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return $data;
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break;
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case 'quoted-printable':
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return $this->_quotedPrintableEncode($data);
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break;
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case 'base64':
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return rtrim(chunk_split(base64_encode($data), 76, MAIL_MIMEPART_CRLF));
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break;
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default:
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return $data;
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}
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}
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/**
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* quotedPrintableEncode()
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*
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* Encodes data to quoted-printable standard.
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*
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* @param $input The data to encode
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* @param $line_max Optional max line length. Should
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* not be more than 76 chars
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*
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* @access private
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*/
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function _quotedPrintableEncode($input , $line_max = 76)
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{
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$lines = preg_split("/\r?\n/", $input);
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$eol = MAIL_MIMEPART_CRLF;
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$escape = '=';
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$output = '';
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while (list(, $line) = each($lines)) {
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$line = preg_split('||', $line, -1, PREG_SPLIT_NO_EMPTY);
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$linlen = count($line);
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$newline = '';
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for ($i = 0; $i < $linlen; $i++) {
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$char = $line[$i];
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$dec = ord($char);
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if (($dec == 32) AND ($i == ($linlen - 1))) { // convert space at eol only
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$char = '=20';
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} elseif (($dec == 9) AND ($i == ($linlen - 1))) { // convert tab at eol only
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$char = '=09';
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} elseif ($dec == 9) {
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; // Do nothing if a tab.
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} elseif (($dec == 61) OR ($dec < 32 ) OR ($dec > 126)) {
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$char = $escape . strtoupper(sprintf('%02s', dechex($dec)));
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} elseif (($dec == 46) AND (($newline == '') || ((strlen($newline) + strlen("=2E")) >= $line_max))) {
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//Bug #9722: convert full-stop at bol,
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//some Windows servers need this, won't break anything (cipri)
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//Bug #11731: full-stop at bol also needs to be encoded
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//if this line would push us over the line_max limit.
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$char = '=2E';
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}
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//Note, when changing this line, also change the ($dec == 46)
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//check line, as it mimics this line due to Bug #11731
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if ((strlen($newline) + strlen($char)) >= $line_max) { // MAIL_MIMEPART_CRLF is not counted
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$output .= $newline . $escape . $eol; // soft line break; " =\r\n" is okay
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$newline = '';
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}
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$newline .= $char;
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} // end of for
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$output .= $newline . $eol;
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}
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$output = substr($output, 0, -1 * strlen($eol)); // Don't want last crlf
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return $output;
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}
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/**
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* _buildHeaderParam()
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*
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* Encodes the paramater of a header.
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*
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* @param $name The name of the header-parameter
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* @param $value The value of the paramter
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* @param $charset The characterset of $value
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* @param $language The language used in $value
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* @param $paramEnc Parameter encoding type
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* @param $maxLength The maximum length of a line. Defauls to 78
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*
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* @access private
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*/
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function _buildHeaderParam($name, $value, $charset=NULL, $language=NULL, $paramEnc=NULL, $maxLength=78)
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{
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// RFC 2045:
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// value needs encoding if contains non-ASCII chars or is longer than 78 chars
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if (!preg_match('#[^\x20-\x7E]#', $value)) { // ASCII
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// token
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if (!preg_match('#([^\x21,\x23-\x27,\x2A,\x2B,\x2D,\x2E,\x30-\x39,\x41-\x5A,\x5E-\x7E])#', $value)) {
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if (strlen($name) + strlen($value) + 3 <= $maxLength)
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return " {$name}={$value};";
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} else { // quoted-string
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$quoted = addcslashes($value, '\\"');
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if (strlen($name) + strlen($quoted) + 5 <= $maxLength)
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return " {$name}=\"{$quoted}\";";
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}
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}
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// RFC2047: use quoted-printable/base64 encoding
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if ($paramEnc == 'quoted-printable' || $paramEnc == 'base64')
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return $this->_buildRFC2047Param($name, $value, $charset, $paramEnc);
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// RFC2231:
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$encValue = preg_replace('#([^\x21,\x23,\x24,\x26,\x2B,\x2D,\x2E,\x30-\x39,\x41-\x5A,\x5E-\x7E])#e',
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'"%" . strtoupper(dechex(ord("\1")))', $value);
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$value = "$charset'$language'$encValue";
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$header = " {$name}*={$value};";
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if (strlen($header) <= $maxLength) {
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return $header;
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}
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$preLength = strlen(" {$name}*0*=");
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$maxLength = max(16, $maxLength - $preLength - 3);
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$maxLengthReg = "|(.{0,$maxLength}[^\%][^\%])|";
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$headers = array();
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$headCount = 0;
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while ($value) {
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$matches = array();
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$found = preg_match($maxLengthReg, $value, $matches);
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if ($found) {
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$headers[] = " {$name}*{$headCount}*={$matches[0]}";
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$value = substr($value, strlen($matches[0]));
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} else {
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$headers[] = " {$name}*{$headCount}*={$value}";
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$value = '';
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}
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$headCount++;
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}
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$headers = implode(';' . MAIL_MIMEPART_CRLF, $headers) . ';';
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return $headers;
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}
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/**
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* Encodes header parameter as per RFC2047 if needed (values too long will be truncated)
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*
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* @param string $name The parameter name
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* @param string $value The parameter value
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* @param string $charset The parameter charset
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* @param string $encoding Encoding type (quoted-printable or base64)
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* @param int $maxLength Encoded parameter max length (75 is the value specified in the RFC)
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*
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* @return string Parameter line
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* @access private
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*/
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function _buildRFC2047Param($name, $value, $charset, $encoding='quoted-printable', $maxLength=75)
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{
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if (!preg_match('#([^\x20-\x7E]){1}#', $value))
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{
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$quoted = addcslashes($value, '\\"');
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$maxLength = $maxLength - 6;
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if (strlen($quoted) > $maxLength)
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{
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// truncate filename leaving extension
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$ext = strrchr($quoted, '.');
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$quoted = substr($quoted, 0, $maxLength - strlen($ext));
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// remove backslashes from the end of filename
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preg_replace('/[\\\\]+$/', '', $quoted);
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$quoted .= $ext;
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}
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}
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else if ($encoding == 'base64')
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{
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$ext = strrchr($value, '.');
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$value = substr($value, 0, strlen($value) - strlen($ext));
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$ext = base64_encode($ext);
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$value = base64_encode($value);
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$prefix = '=?' . $charset . '?B?';
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$suffix = '?=';
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$maxLength = $maxLength - strlen($prefix . $suffix) - strlen($ext) - 2;
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//We can cut base64 every 4 characters, so the real max
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//we can get must be rounded down.
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$maxLength = $maxLength - ($maxLength % 4);
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$quoted = $prefix . substr($value, 0, $maxLength) . $ext . $suffix;
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}
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else // quoted-printable
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{
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$ext = strrchr($value, '.');
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$value = substr($value, 0, strlen($value) - strlen($ext));
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// Replace all special characters used by the encoder.
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$search = array('=', '_', '?', ' ');
|
|
$replace = array('=3D', '=5F', '=3F', '_');
|
|
$ext = str_replace($search, $replace, $ext);
|
|
$value = str_replace($search, $replace, $value);
|
|
|
|
// Replace all extended characters (\x80-xFF) with their
|
|
// ASCII values.
|
|
$ext = preg_replace('/([\x80-\xFF])/e',
|
|
'"=" . strtoupper(dechex(ord("\1")))', $ext);
|
|
$value = preg_replace('/([\x80-\xFF])/e',
|
|
'"=" . strtoupper(dechex(ord("\1")))', $value);
|
|
|
|
$prefix = '=?' . $charset . '?Q?';
|
|
$suffix = '?=';
|
|
|
|
$maxLength = $maxLength - strlen($prefix . $suffix) - strlen($ext) - 2;
|
|
|
|
// Truncate QP-encoded text at $maxLength
|
|
// but not break any encoded letters.
|
|
if(preg_match("/^(.{0,$maxLength}[^\=][^\=])/", $value, $matches))
|
|
$value = $matches[1];
|
|
|
|
$quoted = $prefix . $value . $ext . $suffix;
|
|
}
|
|
|
|
return " {$name}=\"{$quoted}\"; ";
|
|
}
|
|
|
|
} // End of class
|