1215 lines
42 KiB
PHP
1215 lines
42 KiB
PHP
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<?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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* @author Aleksander Machniak <alec@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: mimePart.php 301061 2010-07-07 18:20:17Z alec $
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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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*
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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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* @author Aleksander Machniak <alec@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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/**
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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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* The location of file with 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_file;
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/**
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* The end-of-line sequence
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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 $_eol = "\r\n";
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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 string $body The body of the mime part if any.
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* @param array $params An associative array of optional 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,
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* 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 - 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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* name_encoding - Encoding for attachment name (Content-Type)
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* By default filenames are encoded using RFC2231
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* Here you can set RFC2047 encoding (quoted-printable
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* or base64) instead
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* filename_encoding - Encoding for attachment filename (Content-Disposition)
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* See 'name_encoding'
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* eol - End of line sequence. Default: "\r\n"
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* body_file - Location of file with part's body (instead of $body)
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*
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* @access public
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*/
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function __construct($body = '', $params = array())
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{
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if (!empty($params['eol'])) {
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$this->_eol = $params['eol'];
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} else if (defined('MAIL_MIMEPART_CRLF')) { // backward-copat.
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$this->_eol = MAIL_MIMEPART_CRLF;
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}
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$c_type = array();
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$c_disp = 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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$c_type['type'] = $value;
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break;
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case 'encoding':
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$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'] = '<' . $value . '>';
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break;
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case 'disposition':
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$c_disp['disp'] = $value;
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break;
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case 'dfilename':
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$c_disp['filename'] = $value;
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$c_type['name'] = $value;
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break;
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case 'description':
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$headers['Content-Description'] = $value;
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break;
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case 'charset':
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$c_type['charset'] = $value;
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$c_disp['charset'] = $value;
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break;
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case 'language':
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$c_type['language'] = $value;
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$c_disp['language'] = $value;
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break;
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case 'location':
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$headers['Content-Location'] = $value;
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break;
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case 'body_file':
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$this->_body_file = $value;
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break;
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}
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}
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// Default content-type
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if (empty($c_type['type'])) {
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$c_type['type'] = 'text/plain';
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}
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// Content-Type
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if (!empty($c_type['type'])) {
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$headers['Content-Type'] = $c_type['type'];
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if (!empty($c_type['charset'])) {
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$charset = "charset={$c_type['charset']}";
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// place charset parameter in the same line, if possible
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if ((strlen($headers['Content-Type']) + strlen($charset) + 16) <= 76) {
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$headers['Content-Type'] .= '; ';
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} else {
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$headers['Content-Type'] .= ';' . $this->_eol . ' ';
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}
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$headers['Content-Type'] .= $charset;
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}
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if (!empty($c_type['name'])) {
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$headers['Content-Type'] .= ';' . $this->_eol;
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$headers['Content-Type'] .= $this->_buildHeaderParam(
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'name', $c_type['name'],
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isset($c_type['charset']) ? $c_type['charset'] : 'US-ASCII',
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isset($c_type['language']) ? $c_type['language'] : null,
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isset($params['name_encoding']) ? $params['name_encoding'] : null
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);
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}
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}
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// Content-Disposition
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if (!empty($c_disp['disp'])) {
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$headers['Content-Disposition'] = $c_disp['disp'];
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if (!empty($c_disp['filename'])) {
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$headers['Content-Disposition'] .= ';' . $this->_eol;
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$headers['Content-Disposition'] .= $this->_buildHeaderParam(
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'filename', $c_disp['filename'],
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isset($c_disp['charset']) ? $c_disp['charset'] : 'US-ASCII',
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isset($c_disp['language']) ? $c_disp['language'] : null,
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isset($params['filename_encoding']) ? $params['filename_encoding'] : null
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);
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}
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}
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if (!empty($headers['Content-Description'])) {
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$headers['Content-Description'] = $this->encodeHeader(
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'Content-Description', $headers['Content-Description'],
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isset($c_type['charset']) ? $c_type['charset'] : 'US-ASCII',
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isset($params['name_encoding']) ? $params['name_encoding'] : 'quoted-printable',
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$this->_eol
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);
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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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* 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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* @param string $boundary Pre-defined boundary string
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*
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* @return An associative array containing two elements,
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* body and headers. The headers element is itself
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* an indexed array. On error returns PEAR error object.
|
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* @access public
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*/
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function encode($boundary=null)
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{
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$encoded =& $this->_encoded;
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if (count($this->_subparts)) {
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$boundary = $boundary ? $boundary : '=_' . md5(rand() . microtime());
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$eol = $this->_eol;
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$this->_headers['Content-Type'] .= ";$eol boundary=\"$boundary\"";
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$encoded['body'] = '';
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|
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for ($i = 0; $i < count($this->_subparts); $i++) {
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$encoded['body'] .= '--' . $boundary . $eol;
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$tmp = $this->_subparts[$i]->encode();
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if (PEAR::isError($tmp)) {
|
||
|
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return $tmp;
|
||
|
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}
|
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|
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foreach ($tmp['headers'] as $key => $value) {
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$encoded['body'] .= $key . ': ' . $value . $eol;
|
||
|
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}
|
||
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$encoded['body'] .= $eol . $tmp['body'] . $eol;
|
||
|
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}
|
||
|
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$encoded['body'] .= '--' . $boundary . '--' . $eol;
|
||
|
|
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} else if ($this->_body) {
|
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$encoded['body'] = $this->_getEncodedData($this->_body, $this->_encoding);
|
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|
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} else if ($this->_body_file) {
|
||
|
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// Temporarily reset magic_quotes_runtime for file reads and writes
|
||
|
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if ($magic_quote_setting = get_magic_quotes_runtime()) {
|
||
|
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@ini_set('magic_quotes_runtime', 0);
|
||
|
|
}
|
||
|
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$body = $this->_getEncodedDataFromFile($this->_body_file, $this->_encoding);
|
||
|
|
if ($magic_quote_setting) {
|
||
|
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@ini_set('magic_quotes_runtime', $magic_quote_setting);
|
||
|
|
}
|
||
|
|
|
||
|
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if (PEAR::isError($body)) {
|
||
|
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return $body;
|
||
|
|
}
|
||
|
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$encoded['body'] = $body;
|
||
|
|
} else {
|
||
|
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$encoded['body'] = '';
|
||
|
|
}
|
||
|
|
|
||
|
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// Add headers to $encoded
|
||
|
|
$encoded['headers'] =& $this->_headers;
|
||
|
|
|
||
|
|
return $encoded;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes and saves the email into file. File must exist.
|
||
|
|
* Data will be appended to the file.
|
||
|
|
*
|
||
|
|
* @param string $filename Output file location
|
||
|
|
* @param string $boundary Pre-defined boundary string
|
||
|
|
* @param boolean $skip_head True if you don't want to save headers
|
||
|
|
*
|
||
|
|
* @return array An associative array containing message headers
|
||
|
|
* or PEAR error object
|
||
|
|
* @access public
|
||
|
|
* @since 1.6.0
|
||
|
|
*/
|
||
|
|
function encodeToFile($filename, $boundary=null, $skip_head=false)
|
||
|
|
{
|
||
|
|
if (file_exists($filename) && !is_writable($filename)) {
|
||
|
|
$err = PEAR::raiseError('File is not writeable: ' . $filename);
|
||
|
|
return $err;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!($fh = fopen($filename, 'ab'))) {
|
||
|
|
$err = PEAR::raiseError('Unable to open file: ' . $filename);
|
||
|
|
return $err;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Temporarily reset magic_quotes_runtime for file reads and writes
|
||
|
|
if ($magic_quote_setting = get_magic_quotes_runtime()) {
|
||
|
|
@ini_set('magic_quotes_runtime', 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
$res = $this->_encodePartToFile($fh, $boundary, $skip_head);
|
||
|
|
|
||
|
|
fclose($fh);
|
||
|
|
|
||
|
|
if ($magic_quote_setting) {
|
||
|
|
@ini_set('magic_quotes_runtime', $magic_quote_setting);
|
||
|
|
}
|
||
|
|
|
||
|
|
return PEAR::isError($res) ? $res : $this->_headers;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes given email part into file
|
||
|
|
*
|
||
|
|
* @param string $fh Output file handle
|
||
|
|
* @param string $boundary Pre-defined boundary string
|
||
|
|
* @param boolean $skip_head True if you don't want to save headers
|
||
|
|
*
|
||
|
|
* @return array True on sucess or PEAR error object
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _encodePartToFile($fh, $boundary=null, $skip_head=false)
|
||
|
|
{
|
||
|
|
$eol = $this->_eol;
|
||
|
|
|
||
|
|
if (count($this->_subparts)) {
|
||
|
|
$boundary = $boundary ? $boundary : '=_' . md5(rand() . microtime());
|
||
|
|
$this->_headers['Content-Type'] .= ";$eol boundary=\"$boundary\"";
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$skip_head) {
|
||
|
|
foreach ($this->_headers as $key => $value) {
|
||
|
|
fwrite($fh, $key . ': ' . $value . $eol);
|
||
|
|
}
|
||
|
|
$f_eol = $eol;
|
||
|
|
} else {
|
||
|
|
$f_eol = '';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (count($this->_subparts)) {
|
||
|
|
for ($i = 0; $i < count($this->_subparts); $i++) {
|
||
|
|
fwrite($fh, $f_eol . '--' . $boundary . $eol);
|
||
|
|
$res = $this->_subparts[$i]->_encodePartToFile($fh);
|
||
|
|
if (PEAR::isError($res)) {
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
$f_eol = $eol;
|
||
|
|
}
|
||
|
|
|
||
|
|
fwrite($fh, $eol . '--' . $boundary . '--' . $eol);
|
||
|
|
|
||
|
|
} else if ($this->_body) {
|
||
|
|
fwrite($fh, $f_eol . $this->_getEncodedData($this->_body, $this->_encoding));
|
||
|
|
} else if ($this->_body_file) {
|
||
|
|
fwrite($fh, $f_eol);
|
||
|
|
$res = $this->_getEncodedDataFromFile(
|
||
|
|
$this->_body_file, $this->_encoding, $fh
|
||
|
|
);
|
||
|
|
if (PEAR::isError($res)) {
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds a subpart to current mime part and returns
|
||
|
|
* a reference to it
|
||
|
|
*
|
||
|
|
* @param string $body The body of the subpart, if any.
|
||
|
|
* @param array $params The parameters for the subpart, same
|
||
|
|
* as the $params argument for constructor.
|
||
|
|
*
|
||
|
|
* @return Mail_mimePart A reference to the part you just added. It is
|
||
|
|
* crucial if using multipart/* in your subparts that
|
||
|
|
* you use =& in your script when calling this function,
|
||
|
|
* otherwise you will not be able to add further subparts.
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function &addSubpart($body, $params)
|
||
|
|
{
|
||
|
|
$this->_subparts[] = new Mail_mimePart($body, $params);
|
||
|
|
return $this->_subparts[count($this->_subparts) - 1];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns encoded data based upon encoding passed to it
|
||
|
|
*
|
||
|
|
* @param string $data The data to encode.
|
||
|
|
* @param string $encoding The encoding type to use, 7bit, base64,
|
||
|
|
* or quoted-printable.
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _getEncodedData($data, $encoding)
|
||
|
|
{
|
||
|
|
switch ($encoding) {
|
||
|
|
case 'quoted-printable':
|
||
|
|
return $this->_quotedPrintableEncode($data);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 'base64':
|
||
|
|
return rtrim(chunk_split(base64_encode($data), 76, $this->_eol));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case '8bit':
|
||
|
|
case '7bit':
|
||
|
|
default:
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns encoded data based upon encoding passed to it
|
||
|
|
*
|
||
|
|
* @param string $filename Data file location
|
||
|
|
* @param string $encoding The encoding type to use, 7bit, base64,
|
||
|
|
* or quoted-printable.
|
||
|
|
* @param resource $fh Output file handle. If set, data will be
|
||
|
|
* stored into it instead of returning it
|
||
|
|
*
|
||
|
|
* @return string Encoded data or PEAR error object
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _getEncodedDataFromFile($filename, $encoding, $fh=null)
|
||
|
|
{
|
||
|
|
if (!is_readable($filename)) {
|
||
|
|
$err = PEAR::raiseError('Unable to read file: ' . $filename);
|
||
|
|
return $err;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!($fd = fopen($filename, 'rb'))) {
|
||
|
|
$err = PEAR::raiseError('Could not open file: ' . $filename);
|
||
|
|
return $err;
|
||
|
|
}
|
||
|
|
|
||
|
|
$data = '';
|
||
|
|
|
||
|
|
switch ($encoding) {
|
||
|
|
case 'quoted-printable':
|
||
|
|
while (!feof($fd)) {
|
||
|
|
$buffer = $this->_quotedPrintableEncode(fgets($fd));
|
||
|
|
if ($fh) {
|
||
|
|
fwrite($fh, $buffer);
|
||
|
|
} else {
|
||
|
|
$data .= $buffer;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 'base64':
|
||
|
|
while (!feof($fd)) {
|
||
|
|
// Should read in a multiple of 57 bytes so that
|
||
|
|
// the output is 76 bytes per line. Don't use big chunks
|
||
|
|
// because base64 encoding is memory expensive
|
||
|
|
$buffer = fread($fd, 57 * 9198); // ca. 0.5 MB
|
||
|
|
$buffer = base64_encode($buffer);
|
||
|
|
$buffer = chunk_split($buffer, 76, $this->_eol);
|
||
|
|
if (feof($fd)) {
|
||
|
|
$buffer = rtrim($buffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($fh) {
|
||
|
|
fwrite($fh, $buffer);
|
||
|
|
} else {
|
||
|
|
$data .= $buffer;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case '8bit':
|
||
|
|
case '7bit':
|
||
|
|
default:
|
||
|
|
while (!feof($fd)) {
|
||
|
|
$buffer = fread($fd, 1048576); // 1 MB
|
||
|
|
if ($fh) {
|
||
|
|
fwrite($fh, $buffer);
|
||
|
|
} else {
|
||
|
|
$data .= $buffer;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fclose($fd);
|
||
|
|
|
||
|
|
if (!$fh) {
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes data to quoted-printable standard.
|
||
|
|
*
|
||
|
|
* @param string $input The data to encode
|
||
|
|
* @param int $line_max Optional max line length. Should
|
||
|
|
* not be more than 76 chars
|
||
|
|
*
|
||
|
|
* @return string Encoded data
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _quotedPrintableEncode($input , $line_max = 76)
|
||
|
|
{
|
||
|
|
$eol = $this->_eol;
|
||
|
|
/*
|
||
|
|
// imap_8bit() is extremely fast, but doesn't handle properly some characters
|
||
|
|
if (function_exists('imap_8bit') && $line_max == 76) {
|
||
|
|
$input = preg_replace('/\r?\n/', "\r\n", $input);
|
||
|
|
$input = imap_8bit($input);
|
||
|
|
if ($eol != "\r\n") {
|
||
|
|
$input = str_replace("\r\n", $eol, $input);
|
||
|
|
}
|
||
|
|
return $input;
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
$lines = preg_split("/\r?\n/", $input);
|
||
|
|
$escape = '=';
|
||
|
|
$output = '';
|
||
|
|
|
||
|
|
while (list($idx, $line) = each($lines)) {
|
||
|
|
$newline = '';
|
||
|
|
$i = 0;
|
||
|
|
|
||
|
|
while (isset($line[$i])) {
|
||
|
|
$char = $line[$i];
|
||
|
|
$dec = ord($char);
|
||
|
|
$i++;
|
||
|
|
|
||
|
|
if (($dec == 32) && (!isset($line[$i]))) {
|
||
|
|
// convert space at eol only
|
||
|
|
$char = '=20';
|
||
|
|
} elseif ($dec == 9 && isset($line[$i])) {
|
||
|
|
; // Do nothing if a TAB is not on eol
|
||
|
|
} elseif (($dec == 61) || ($dec < 32) || ($dec > 126)) {
|
||
|
|
$char = $escape . sprintf('%02X', $dec);
|
||
|
|
} elseif (($dec == 46) && (($newline == '')
|
||
|
|
|| ((strlen($newline) + strlen("=2E")) >= $line_max))
|
||
|
|
) {
|
||
|
|
// Bug #9722: convert full-stop at bol,
|
||
|
|
// some Windows servers need this, won't break anything (cipri)
|
||
|
|
// Bug #11731: full-stop at bol also needs to be encoded
|
||
|
|
// if this line would push us over the line_max limit.
|
||
|
|
$char = '=2E';
|
||
|
|
}
|
||
|
|
|
||
|
|
// Note, when changing this line, also change the ($dec == 46)
|
||
|
|
// check line, as it mimics this line due to Bug #11731
|
||
|
|
// EOL is not counted
|
||
|
|
if ((strlen($newline) + strlen($char)) >= $line_max) {
|
||
|
|
// soft line break; " =\r\n" is okay
|
||
|
|
$output .= $newline . $escape . $eol;
|
||
|
|
$newline = '';
|
||
|
|
}
|
||
|
|
$newline .= $char;
|
||
|
|
} // end of for
|
||
|
|
$output .= $newline . $eol;
|
||
|
|
unset($lines[$idx]);
|
||
|
|
}
|
||
|
|
// Don't want last crlf
|
||
|
|
$output = substr($output, 0, -1 * strlen($eol));
|
||
|
|
return $output;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes the paramater of a header.
|
||
|
|
*
|
||
|
|
* @param string $name The name of the header-parameter
|
||
|
|
* @param string $value The value of the paramter
|
||
|
|
* @param string $charset The characterset of $value
|
||
|
|
* @param string $language The language used in $value
|
||
|
|
* @param string $encoding Parameter encoding. If not set, parameter value
|
||
|
|
* is encoded according to RFC2231
|
||
|
|
* @param int $maxLength The maximum length of a line. Defauls to 75
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _buildHeaderParam($name, $value, $charset=null, $language=null,
|
||
|
|
$encoding=null, $maxLength=75
|
||
|
|
) {
|
||
|
|
// RFC 2045:
|
||
|
|
// value needs encoding if contains non-ASCII chars or is longer than 78 chars
|
||
|
|
if (!preg_match('#[^\x20-\x7E]#', $value)) {
|
||
|
|
$token_regexp = '#([^\x21,\x23-\x27,\x2A,\x2B,\x2D'
|
||
|
|
. ',\x2E,\x30-\x39,\x41-\x5A,\x5E-\x7E])#';
|
||
|
|
if (!preg_match($token_regexp, $value)) {
|
||
|
|
// token
|
||
|
|
if (strlen($name) + strlen($value) + 3 <= $maxLength) {
|
||
|
|
return " {$name}={$value}";
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// quoted-string
|
||
|
|
$quoted = addcslashes($value, '\\"');
|
||
|
|
if (strlen($name) + strlen($quoted) + 5 <= $maxLength) {
|
||
|
|
return " {$name}=\"{$quoted}\"";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// RFC2047: use quoted-printable/base64 encoding
|
||
|
|
if ($encoding == 'quoted-printable' || $encoding == 'base64') {
|
||
|
|
return $this->_buildRFC2047Param($name, $value, $charset, $encoding);
|
||
|
|
}
|
||
|
|
|
||
|
|
// RFC2231:
|
||
|
|
$encValue = preg_replace_callback(
|
||
|
|
'/([^\x21,\x23,\x24,\x26,\x2B,\x2D,\x2E,\x30-\x39,\x41-\x5A,\x5E-\x7E])/',
|
||
|
|
array($this, '_encodeReplaceCallback'), $value
|
||
|
|
);
|
||
|
|
$value = "$charset'$language'$encValue";
|
||
|
|
|
||
|
|
$header = " {$name}*={$value}";
|
||
|
|
if (strlen($header) <= $maxLength) {
|
||
|
|
return $header;
|
||
|
|
}
|
||
|
|
|
||
|
|
$preLength = strlen(" {$name}*0*=");
|
||
|
|
$maxLength = max(16, $maxLength - $preLength - 3);
|
||
|
|
$maxLengthReg = "|(.{0,$maxLength}[^\%][^\%])|";
|
||
|
|
|
||
|
|
$headers = array();
|
||
|
|
$headCount = 0;
|
||
|
|
while ($value) {
|
||
|
|
$matches = array();
|
||
|
|
$found = preg_match($maxLengthReg, $value, $matches);
|
||
|
|
if ($found) {
|
||
|
|
$headers[] = " {$name}*{$headCount}*={$matches[0]}";
|
||
|
|
$value = substr($value, strlen($matches[0]));
|
||
|
|
} else {
|
||
|
|
$headers[] = " {$name}*{$headCount}*={$value}";
|
||
|
|
$value = '';
|
||
|
|
}
|
||
|
|
$headCount++;
|
||
|
|
}
|
||
|
|
|
||
|
|
$headers = implode(';' . $this->_eol, $headers);
|
||
|
|
return $headers;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes header parameter as per RFC2047 if needed
|
||
|
|
*
|
||
|
|
* @param string $name The parameter name
|
||
|
|
* @param string $value The parameter value
|
||
|
|
* @param string $charset The parameter charset
|
||
|
|
* @param string $encoding Encoding type (quoted-printable or base64)
|
||
|
|
* @param int $maxLength Encoded parameter max length. Default: 76
|
||
|
|
*
|
||
|
|
* @return string Parameter line
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _buildRFC2047Param($name, $value, $charset,
|
||
|
|
$encoding='quoted-printable', $maxLength=76
|
||
|
|
) {
|
||
|
|
// WARNING: RFC 2047 says: "An 'encoded-word' MUST NOT be used in
|
||
|
|
// parameter of a MIME Content-Type or Content-Disposition field",
|
||
|
|
// but... it's supported by many clients/servers
|
||
|
|
$quoted = '';
|
||
|
|
|
||
|
|
if ($encoding == 'base64') {
|
||
|
|
$value = base64_encode($value);
|
||
|
|
$prefix = '=?' . $charset . '?B?';
|
||
|
|
$suffix = '?=';
|
||
|
|
|
||
|
|
// 2 x SPACE, 2 x '"', '=', ';'
|
||
|
|
$add_len = strlen($prefix . $suffix) + strlen($name) + 6;
|
||
|
|
$len = $add_len + strlen($value);
|
||
|
|
|
||
|
|
while ($len > $maxLength) {
|
||
|
|
// We can cut base64-encoded string every 4 characters
|
||
|
|
$real_len = floor(($maxLength - $add_len) / 4) * 4;
|
||
|
|
$_quote = substr($value, 0, $real_len);
|
||
|
|
$value = substr($value, $real_len);
|
||
|
|
|
||
|
|
$quoted .= $prefix . $_quote . $suffix . $this->_eol . ' ';
|
||
|
|
$add_len = strlen($prefix . $suffix) + 4; // 2 x SPACE, '"', ';'
|
||
|
|
$len = strlen($value) + $add_len;
|
||
|
|
}
|
||
|
|
$quoted .= $prefix . $value . $suffix;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
// quoted-printable
|
||
|
|
$value = $this->encodeQP($value);
|
||
|
|
$prefix = '=?' . $charset . '?Q?';
|
||
|
|
$suffix = '?=';
|
||
|
|
|
||
|
|
// 2 x SPACE, 2 x '"', '=', ';'
|
||
|
|
$add_len = strlen($prefix . $suffix) + strlen($name) + 6;
|
||
|
|
$len = $add_len + strlen($value);
|
||
|
|
|
||
|
|
while ($len > $maxLength) {
|
||
|
|
$length = $maxLength - $add_len;
|
||
|
|
// don't break any encoded letters
|
||
|
|
if (preg_match("/^(.{0,$length}[^\=][^\=])/", $value, $matches)) {
|
||
|
|
$_quote = $matches[1];
|
||
|
|
}
|
||
|
|
|
||
|
|
$quoted .= $prefix . $_quote . $suffix . $this->_eol . ' ';
|
||
|
|
$value = substr($value, strlen($_quote));
|
||
|
|
$add_len = strlen($prefix . $suffix) + 4; // 2 x SPACE, '"', ';'
|
||
|
|
$len = strlen($value) + $add_len;
|
||
|
|
}
|
||
|
|
|
||
|
|
$quoted .= $prefix . $value . $suffix;
|
||
|
|
}
|
||
|
|
|
||
|
|
return " {$name}=\"{$quoted}\"";
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes a header as per RFC2047
|
||
|
|
*
|
||
|
|
* @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)
|
||
|
|
* @param string $eol End-of-line sequence. Default: "\r\n"
|
||
|
|
*
|
||
|
|
* @return string Encoded header data (without a name)
|
||
|
|
* @access public
|
||
|
|
* @since 1.6.1
|
||
|
|
*/
|
||
|
|
static function encodeHeader($name, $value, $charset='ISO-8859-1',
|
||
|
|
$encoding='quoted-printable', $eol="\r\n"
|
||
|
|
) {
|
||
|
|
// Structured headers
|
||
|
|
$comma_headers = array(
|
||
|
|
'from', 'to', 'cc', 'bcc', 'sender', 'reply-to',
|
||
|
|
'resent-from', 'resent-to', 'resent-cc', 'resent-bcc',
|
||
|
|
'resent-sender', 'resent-reply-to',
|
||
|
|
'return-receipt-to', 'disposition-notification-to',
|
||
|
|
);
|
||
|
|
$other_headers = array(
|
||
|
|
'references', 'in-reply-to', 'message-id', 'resent-message-id',
|
||
|
|
);
|
||
|
|
|
||
|
|
$name = strtolower($name);
|
||
|
|
|
||
|
|
if (in_array($name, $comma_headers)) {
|
||
|
|
$separator = ',';
|
||
|
|
} else if (in_array($name, $other_headers)) {
|
||
|
|
$separator = ' ';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$charset) {
|
||
|
|
$charset = 'ISO-8859-1';
|
||
|
|
}
|
||
|
|
|
||
|
|
// Structured header (make sure addr-spec inside is not encoded)
|
||
|
|
if (!empty($separator)) {
|
||
|
|
$parts = Mail_mimePart::_explodeQuotedString($separator, $value);
|
||
|
|
$value = '';
|
||
|
|
|
||
|
|
foreach ($parts as $part) {
|
||
|
|
$part = preg_replace('/\r?\n[\s\t]*/', $eol . ' ', $part);
|
||
|
|
$part = trim($part);
|
||
|
|
|
||
|
|
if (!$part) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if ($value) {
|
||
|
|
$value .= $separator==',' ? $separator.' ' : ' ';
|
||
|
|
} else {
|
||
|
|
$value = $name . ': ';
|
||
|
|
}
|
||
|
|
|
||
|
|
// let's find phrase (name) and/or addr-spec
|
||
|
|
if (preg_match('/^<\S+@\S+>$/', $part)) {
|
||
|
|
$value .= $part;
|
||
|
|
} else if (preg_match('/^\S+@\S+$/', $part)) {
|
||
|
|
// address without brackets and without name
|
||
|
|
$value .= $part;
|
||
|
|
} else if (preg_match('/<*\S+@\S+>*$/', $part, $matches)) {
|
||
|
|
// address with name (handle name)
|
||
|
|
$address = $matches[0];
|
||
|
|
$word = str_replace($address, '', $part);
|
||
|
|
$word = trim($word);
|
||
|
|
// check if phrase requires quoting
|
||
|
|
if ($word) {
|
||
|
|
// non-ASCII: require encoding
|
||
|
|
if (preg_match('#([\x80-\xFF]){1}#', $word)) {
|
||
|
|
if ($word[0] == '"' && $word[strlen($word)-1] == '"') {
|
||
|
|
// de-quote quoted-string, encoding changes
|
||
|
|
// string to atom
|
||
|
|
$search = array("\\\"", "\\\\");
|
||
|
|
$replace = array("\"", "\\");
|
||
|
|
$word = str_replace($search, $replace, $word);
|
||
|
|
$word = substr($word, 1, -1);
|
||
|
|
}
|
||
|
|
// find length of last line
|
||
|
|
if (($pos = strrpos($value, $eol)) !== false) {
|
||
|
|
$last_len = strlen($value) - $pos;
|
||
|
|
} else {
|
||
|
|
$last_len = strlen($value);
|
||
|
|
}
|
||
|
|
$word = Mail_mimePart::encodeHeaderValue(
|
||
|
|
$word, $charset, $encoding, $last_len, $eol
|
||
|
|
);
|
||
|
|
} else if (($word[0] != '"' || $word[strlen($word)-1] != '"')
|
||
|
|
&& preg_match('/[\(\)\<\>\\\.\[\]@,;:"]/', $word)
|
||
|
|
) {
|
||
|
|
// ASCII: quote string if needed
|
||
|
|
$word = '"'.addcslashes($word, '\\"').'"';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$value .= $word.' '.$address;
|
||
|
|
} else {
|
||
|
|
// addr-spec not found, don't encode (?)
|
||
|
|
$value .= $part;
|
||
|
|
}
|
||
|
|
|
||
|
|
// RFC2822 recommends 78 characters limit, use 76 from RFC2047
|
||
|
|
$value = wordwrap($value, 76, $eol . ' ');
|
||
|
|
}
|
||
|
|
|
||
|
|
// remove header name prefix (there could be EOL too)
|
||
|
|
$value = preg_replace(
|
||
|
|
'/^'.$name.':('.preg_quote($eol, '/').')* /', '', $value
|
||
|
|
);
|
||
|
|
|
||
|
|
} else {
|
||
|
|
// Unstructured header
|
||
|
|
// non-ASCII: require encoding
|
||
|
|
if (preg_match('#([\x80-\xFF]){1}#', $value)) {
|
||
|
|
if ($value[0] == '"' && $value[strlen($value)-1] == '"') {
|
||
|
|
// de-quote quoted-string, encoding changes
|
||
|
|
// string to atom
|
||
|
|
$search = array("\\\"", "\\\\");
|
||
|
|
$replace = array("\"", "\\");
|
||
|
|
$value = str_replace($search, $replace, $value);
|
||
|
|
$value = substr($value, 1, -1);
|
||
|
|
}
|
||
|
|
$value = Mail_mimePart::encodeHeaderValue(
|
||
|
|
$value, $charset, $encoding, strlen($name) + 2, $eol
|
||
|
|
);
|
||
|
|
} else if (strlen($name.': '.$value) > 78) {
|
||
|
|
// ASCII: check if header line isn't too long and use folding
|
||
|
|
$value = preg_replace('/\r?\n[\s\t]*/', $eol . ' ', $value);
|
||
|
|
$tmp = wordwrap($name.': '.$value, 78, $eol . ' ');
|
||
|
|
$value = preg_replace('/^'.$name.':\s*/', '', $tmp);
|
||
|
|
// hard limit 998 (RFC2822)
|
||
|
|
$value = wordwrap($value, 998, $eol . ' ', true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Explode quoted string
|
||
|
|
*
|
||
|
|
* @param string $delimiter Delimiter expression string for preg_match()
|
||
|
|
* @param string $string Input string
|
||
|
|
*
|
||
|
|
* @return array String tokens array
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
static function _explodeQuotedString($delimiter, $string)
|
||
|
|
{
|
||
|
|
$result = array();
|
||
|
|
$strlen = strlen($string);
|
||
|
|
|
||
|
|
for ($q=$p=$i=0; $i < $strlen; $i++) {
|
||
|
|
if ($string[$i] == "\""
|
||
|
|
&& (empty($string[$i-1]) || $string[$i-1] != "\\")
|
||
|
|
) {
|
||
|
|
$q = $q ? false : true;
|
||
|
|
} else if (!$q && preg_match("/$delimiter/", $string[$i])) {
|
||
|
|
$result[] = substr($string, $p, $i - $p);
|
||
|
|
$p = $i + 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$result[] = substr($string, $p);
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes a header value as per RFC2047
|
||
|
|
*
|
||
|
|
* @param string $value The header data to encode
|
||
|
|
* @param string $charset Character set name
|
||
|
|
* @param string $encoding Encoding name (base64 or quoted-printable)
|
||
|
|
* @param int $prefix_len Prefix length. Default: 0
|
||
|
|
* @param string $eol End-of-line sequence. Default: "\r\n"
|
||
|
|
*
|
||
|
|
* @return string Encoded header data
|
||
|
|
* @access public
|
||
|
|
* @since 1.6.1
|
||
|
|
*/
|
||
|
|
static function encodeHeaderValue($value, $charset, $encoding, $prefix_len=0, $eol="\r\n")
|
||
|
|
{
|
||
|
|
// #17311: Use multibyte aware method (requires mbstring extension)
|
||
|
|
if ($result = Mail_mimePart::encodeMB($value, $charset, $encoding, $prefix_len, $eol)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Generate the header using the specified params and dynamicly
|
||
|
|
// determine the maximum length of such strings.
|
||
|
|
// 75 is the value specified in the RFC.
|
||
|
|
$encoding = $encoding == 'base64' ? 'B' : 'Q';
|
||
|
|
$prefix = '=?' . $charset . '?' . $encoding .'?';
|
||
|
|
$suffix = '?=';
|
||
|
|
$maxLength = 75 - strlen($prefix . $suffix);
|
||
|
|
$maxLength1stLine = $maxLength - $prefix_len;
|
||
|
|
|
||
|
|
if ($encoding == 'B') {
|
||
|
|
// Base64 encode the entire string
|
||
|
|
$value = base64_encode($value);
|
||
|
|
|
||
|
|
// We can cut base64 every 4 characters, so the real max
|
||
|
|
// we can get must be rounded down.
|
||
|
|
$maxLength = $maxLength - ($maxLength % 4);
|
||
|
|
$maxLength1stLine = $maxLength1stLine - ($maxLength1stLine % 4);
|
||
|
|
|
||
|
|
$cutpoint = $maxLength1stLine;
|
||
|
|
$output = '';
|
||
|
|
|
||
|
|
while ($value) {
|
||
|
|
// Split translated string at every $maxLength
|
||
|
|
$part = substr($value, 0, $cutpoint);
|
||
|
|
$value = substr($value, $cutpoint);
|
||
|
|
$cutpoint = $maxLength;
|
||
|
|
// RFC 2047 specifies that any split header should
|
||
|
|
// be seperated by a CRLF SPACE.
|
||
|
|
if ($output) {
|
||
|
|
$output .= $eol . ' ';
|
||
|
|
}
|
||
|
|
$output .= $prefix . $part . $suffix;
|
||
|
|
}
|
||
|
|
$value = $output;
|
||
|
|
} else {
|
||
|
|
// quoted-printable encoding has been selected
|
||
|
|
$value = Mail_mimePart::encodeQP($value);
|
||
|
|
|
||
|
|
// This regexp will break QP-encoded text at every $maxLength
|
||
|
|
// but will not break any encoded letters.
|
||
|
|
$reg1st = "|(.{0,$maxLength1stLine}[^\=][^\=])|";
|
||
|
|
$reg2nd = "|(.{0,$maxLength}[^\=][^\=])|";
|
||
|
|
|
||
|
|
if (strlen($value) > $maxLength1stLine) {
|
||
|
|
// Begin with the regexp for the first line.
|
||
|
|
$reg = $reg1st;
|
||
|
|
$output = '';
|
||
|
|
while ($value) {
|
||
|
|
// Split translated string at every $maxLength
|
||
|
|
// But make sure not to break any translated chars.
|
||
|
|
$found = preg_match($reg, $value, $matches);
|
||
|
|
|
||
|
|
// After this first line, we need to use a different
|
||
|
|
// regexp for the first line.
|
||
|
|
$reg = $reg2nd;
|
||
|
|
|
||
|
|
// Save the found part and encapsulate it in the
|
||
|
|
// prefix & suffix. Then remove the part from the
|
||
|
|
// $value_out variable.
|
||
|
|
if ($found) {
|
||
|
|
$part = $matches[0];
|
||
|
|
$len = strlen($matches[0]);
|
||
|
|
$value = substr($value, $len);
|
||
|
|
} else {
|
||
|
|
$part = $value;
|
||
|
|
$value = '';
|
||
|
|
}
|
||
|
|
|
||
|
|
// RFC 2047 specifies that any split header should
|
||
|
|
// be seperated by a CRLF SPACE
|
||
|
|
if ($output) {
|
||
|
|
$output .= $eol . ' ';
|
||
|
|
}
|
||
|
|
$output .= $prefix . $part . $suffix;
|
||
|
|
}
|
||
|
|
$value = $output;
|
||
|
|
} else {
|
||
|
|
$value = $prefix . $value . $suffix;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes the given string using quoted-printable
|
||
|
|
*
|
||
|
|
* @param string $str String to encode
|
||
|
|
*
|
||
|
|
* @return string Encoded string
|
||
|
|
* @access public
|
||
|
|
* @since 1.6.0
|
||
|
|
*/
|
||
|
|
function encodeQP($str)
|
||
|
|
{
|
||
|
|
// Bug #17226 RFC 2047 restricts some characters
|
||
|
|
// if the word is inside a phrase, permitted chars are only:
|
||
|
|
// ASCII letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"
|
||
|
|
|
||
|
|
// "=", "_", "?" must be encoded
|
||
|
|
$regexp = '/([\x22-\x29\x2C\x2E\x3A-\x40\x5B-\x60\x7B-\x7E\x80-\xFF])/';
|
||
|
|
$str = preg_replace_callback(
|
||
|
|
$regexp, array('Mail_mimePart', '_qpReplaceCallback'), $str
|
||
|
|
);
|
||
|
|
|
||
|
|
return str_replace(' ', '_', $str);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes the given string using base64 or quoted-printable.
|
||
|
|
* This method makes sure that encoded-word represents an integral
|
||
|
|
* number of characters as per RFC2047.
|
||
|
|
*
|
||
|
|
* @param string $str String to encode
|
||
|
|
* @param string $charset Character set name
|
||
|
|
* @param string $encoding Encoding name (base64 or quoted-printable)
|
||
|
|
* @param int $prefix_len Prefix length. Default: 0
|
||
|
|
* @param string $eol End-of-line sequence. Default: "\r\n"
|
||
|
|
*
|
||
|
|
* @return string Encoded string
|
||
|
|
* @access public
|
||
|
|
* @since 1.8.0
|
||
|
|
*/
|
||
|
|
static function encodeMB($str, $charset, $encoding, $prefix_len=0, $eol="\r\n")
|
||
|
|
{
|
||
|
|
if (!function_exists('mb_substr') || !function_exists('mb_strlen')) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$encoding = $encoding == 'base64' ? 'B' : 'Q';
|
||
|
|
// 75 is the value specified in the RFC
|
||
|
|
$prefix = '=?' . $charset . '?'.$encoding.'?';
|
||
|
|
$suffix = '?=';
|
||
|
|
$maxLength = 75 - strlen($prefix . $suffix);
|
||
|
|
|
||
|
|
// A multi-octet character may not be split across adjacent encoded-words
|
||
|
|
// So, we'll loop over each character
|
||
|
|
// mb_stlen() with wrong charset will generate a warning here and return null
|
||
|
|
$length = mb_strlen($str, $charset);
|
||
|
|
$result = '';
|
||
|
|
$line_length = $prefix_len;
|
||
|
|
|
||
|
|
if ($encoding == 'B') {
|
||
|
|
// base64
|
||
|
|
$start = 0;
|
||
|
|
$prev = '';
|
||
|
|
|
||
|
|
for ($i=1; $i<=$length; $i++) {
|
||
|
|
// See #17311
|
||
|
|
$chunk = mb_substr($str, $start, $i-$start, $charset);
|
||
|
|
$chunk = base64_encode($chunk);
|
||
|
|
$chunk_len = strlen($chunk);
|
||
|
|
|
||
|
|
if ($line_length + $chunk_len == $maxLength || $i == $length) {
|
||
|
|
if ($result) {
|
||
|
|
$result .= "\n";
|
||
|
|
}
|
||
|
|
$result .= $chunk;
|
||
|
|
$line_length = 0;
|
||
|
|
$start = $i;
|
||
|
|
} else if ($line_length + $chunk_len > $maxLength) {
|
||
|
|
if ($result) {
|
||
|
|
$result .= "\n";
|
||
|
|
}
|
||
|
|
if ($prev) {
|
||
|
|
$result .= $prev;
|
||
|
|
}
|
||
|
|
$line_length = 0;
|
||
|
|
$start = $i - 1;
|
||
|
|
} else {
|
||
|
|
$prev = $chunk;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// quoted-printable
|
||
|
|
// see encodeQP()
|
||
|
|
$regexp = '/([\x22-\x29\x2C\x2E\x3A-\x40\x5B-\x60\x7B-\x7E\x80-\xFF])/';
|
||
|
|
|
||
|
|
for ($i=0; $i<=$length; $i++) {
|
||
|
|
$char = mb_substr($str, $i, 1, $charset);
|
||
|
|
// RFC recommends underline (instead of =20) in place of the space
|
||
|
|
// that's one of the reasons why we're not using iconv_mime_encode()
|
||
|
|
if ($char == ' ') {
|
||
|
|
$char = '_';
|
||
|
|
$char_len = 1;
|
||
|
|
} else {
|
||
|
|
$char = preg_replace_callback(
|
||
|
|
$regexp, array('Mail_mimePart', '_qpReplaceCallback'), $char
|
||
|
|
);
|
||
|
|
$char_len = strlen($char);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($line_length + $char_len > $maxLength) {
|
||
|
|
if ($result) {
|
||
|
|
$result .= "\n";
|
||
|
|
}
|
||
|
|
$line_length = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
$result .= $char;
|
||
|
|
$line_length += $char_len;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($result) {
|
||
|
|
$result = $prefix
|
||
|
|
.str_replace("\n", $suffix.$eol.' '.$prefix, $result).$suffix;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Callback function to replace extended characters (\x80-xFF) with their
|
||
|
|
* ASCII values (RFC2047: quoted-printable)
|
||
|
|
*
|
||
|
|
* @param array $matches Preg_replace's matches array
|
||
|
|
*
|
||
|
|
* @return string Encoded character string
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
static function _qpReplaceCallback($matches)
|
||
|
|
{
|
||
|
|
return sprintf('=%02X', ord($matches[1]));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Callback function to replace extended characters (\x80-xFF) with their
|
||
|
|
* ASCII values (RFC2231)
|
||
|
|
*
|
||
|
|
* @param array $matches Preg_replace's matches array
|
||
|
|
*
|
||
|
|
* @return string Encoded character string
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
static function _encodeReplaceCallback($matches)
|
||
|
|
{
|
||
|
|
return sprintf('%%%02X', ord($matches[1]));
|
||
|
|
}
|
||
|
|
|
||
|
|
} // End of class
|