mime.php

开源邮件管理系统

<?php
/**
 * The Mail_Mime class is used to create MIME E-mail messages
 *
 * The Mail_Mime class provides an OO interface to create MIME
 * enabled email messages. This way you can create emails that
 * contain plain-text bodies, HTML bodies, attachments, inline
 * images and specific headers.
 *
 * Compatible with PHP versions 4 and 5
 *
 * LICENSE: This LICENSE is in the BSD license style.
 * Copyright (c) 2002-2003, Richard Heyes <[e-mail]>
 * Copyright (c) 2003-2006, PEAR <[e-mail]>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - Neither the name of the authors, nor the names of its contributors 
 *   may be used to endorse or promote products derived from this 
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @category   Mail
 * @package    Mail_Mime
 * @author     Richard Heyes  <[e-mail]>
 * @author     Tomas V.V. Cox <[e-mail]>
 * @author     Cipriano Groenendal <[e-mail]>
 * @author     Sean Coates <[e-mail]>
 * @copyright  2003-2006 PEAR <[e-mail]>
 * @license    http://www.opensource.org/licenses/bsd-license.php BSD License
 * @version    CVS: $Id: mime.php 514 2007-03-21 09:54:10Z thomasb $
 * @link       http://pear.php.net/package/Mail_mime
 * @notes      This class is based on HTML Mime Mail class from
 *             Richard Heyes <[e-mail]> which was based also
 *             in the mime_mail.class by Tobias Ratschiller <[e-mail]>
 *             and Sascha Schumann <[e-mail]>
 */


/**
 * require PEAR
 *
 * This package depends on PEAR to raise errors.
 */
require_once('PEAR.php');

/**
 * require Mail_mimePart
 *
 * Mail_mimePart contains the code required to
 * create all the different parts a mail can
 * consist of.
 */
require_once('Mail/mimePart.php');


/**
 * The Mail_Mime class provides an OO interface to create MIME
 * enabled email messages. This way you can create emails that
 * contain plain-text bodies, HTML bodies, attachments, inline
 * images and specific headers.
 *
 * @category   Mail
 * @package    Mail_Mime
 * @author     Richard Heyes  <[e-mail]>
 * @author     Tomas V.V. Cox <[e-mail]>
 * @author     Cipriano Groenendal <[e-mail]>
 * @author     Sean Coates <[e-mail]>
 * @copyright  2003-2006 PEAR <[e-mail]>
 * @license    http://www.opensource.org/licenses/bsd-license.php BSD License
 * @version    Release: @package_version@
 * @link       http://pear.php.net/package/Mail_mime
 */
class Mail_mime
{
    /**
     * Contains the plain text part of the email
     *
     * @var string
     * @access private
     */
    var $_txtbody;

    /**
     * Contains the html part of the email
     *
     * @var string
     * @access private
     */
    var $_htmlbody;

    /**
     * contains the mime encoded text
     *
     * @var string
     * @access private
     */
    var $_mime;

    /**
     * contains the multipart content
     *
     * @var string
     * @access private
     */
    var $_multipart;

    /**
     * list of the attached images
     *
     * @var array
     * @access private
     */
    var $_html_images = array();

    /**
     * list of the attachements
     *
     * @var array
     * @access private
     */
    var $_parts = array();

    /**
     * Build parameters
     *
     * @var array
     * @access private
     */
    var $_build_params = array();

    /**
     * Headers for the mail
     *
     * @var array
     * @access private
     */
    var $_headers = array();

    /**
     * End Of Line sequence (for serialize)
     *
     * @var string
     * @access private
     */
    var $_eol;


    /**
     * Constructor function.
     *
     * @param string $crlf  what type of linebreak to use.
     *                       Defaults to "\r\n"
     * @return void
     *
     * @access public
     */
    function Mail_mime($crlf = "\r\n")
    {
        $this->_setEOL($crlf);
        $this->_build_params = array(
                                     'head_encoding' => 'quoted-printable',
                                     'text_encoding' => '7bit',
                                     'html_encoding' => 'quoted-printable',
                                     '7bit_wrap'     => 998,
                                     'html_charset'  => 'ISO-8859-1',
                                     'text_charset'  => 'ISO-8859-1',
                                     'head_charset'  => 'ISO-8859-1'
                                    );
    }

    /**
     * wakeup function called by unserialize. It re-sets the EOL constant
     *
     * @access private
     */
    function __wakeup()
    {
        $this->_setEOL($this->_eol);
    }


    /**
     * Accessor function to set the body text. Body text is used if
     * it's not an html mail being sent or else is used to fill the
     * text/plain part that emails clients who don't support
     * html should show.
     *
     * @param  string  $data   Either a string or
     *                          the file name with the contents
     * @param  bool    $isfile If true the first param should be treated
     *                          as a file name, else as a string (default)
     * @param  bool    $append If true the text or file is appended to
     *                          the existing body, else the old body is
     *                          overwritten
     * @return mixed   true on success or PEAR_Error object
     * @access public
     */
    function setTXTBody($data, $isfile = false, $append = false)
    {
        if (!$isfile) {
            if (!$append) {
                $this->_txtbody = $data;
            } else {
                $this->_txtbody .= $data;
            }
        } else {
            $cont = $this->_file2str($data);
            if (PEAR::isError($cont)) {
                return $cont;
            }
            if (!$append) {
                $this->_txtbody = $cont;
            } else {
                $this->_txtbody .= $cont;
            }
        }
        return true;
    }

    /**
     * Adds a html part to the mail.
     *
     * @param  string  $data   either a string or the file name with the
     *                          contents
     * @param  bool    $isfile a flag that determines whether $data is a
     *                          filename, or a string(false, default)
     * @return bool    true on success
     * @access public
     */
    function setHTMLBody($data, $isfile = false)
    {
        if (!$isfile) {
            $this->_htmlbody = $data;
        } else {
            $cont = $this->_file2str($data);
            if (PEAR::isError($cont)) {
                return $cont;
            }
            $this->_htmlbody = $cont;
        }

        return true;
    }

    /**
     * Adds an image to the list of embedded images.
     *
     * @param  string  $file       the image file name OR image data itself
     * @param  string  $c_type     the content type
     * @param  string  $name       the filename of the image.
     *                              Only use if $file is the image data.
     * @param  bool    $isfile     whether $file is a filename or not.
     *                              Defaults to true
     * @return bool                true on success
     * @access public
     */
    function addHTMLImage($file, $c_type='application/octet-stream',
                          $name = '', $isfile = true)
    {
        $filedata = ($isfile === true) ? $this->_file2str($file)
                                           : $file;
        if ($isfile === true) {
            $filename = ($name == '' ? $file : $name);
        } else {
            $filename = $name;
        }
        if (PEAR::isError($filedata)) {
            return $filedata;
        }
        $this->_html_images[] = array(
                                      'body'   => $filedata,
                                      'name'   => $filename,
                                      'c_type' => $c_type,
                                      'cid'    => md5(uniqid(time()))
                                     );
        return true;
    }

    /**
     * Adds a file to the list of attachments.
     *
     * @param  string  $file        The file name of the file to attach
     *                              OR the file contents itself
     * @param  string  $c_type      The content type
     * @param  string  $name        The filename of the attachment
     *                              Only use if $file is the contents
     * @param  bool    $isfile      Whether $file is a filename or not
     *                              Defaults to true
     * @param  string  $encoding    The type of encoding to use.
     *                              Defaults to base64.
     *                              Possible values: 7bit, 8bit, base64, 
     *                              or quoted-printable.
     * @param  string  $disposition The content-disposition of this file
     *                              Defaults to attachment.
     *                              Possible values: attachment, inline.
     * @param  string  $charset     The character set used in the filename
     *                              of this attachment.
     * @return mixed true on success or PEAR_Error object
     * @access public
     */
    function addAttachment($file, $c_type = 'application/octet-stream',
                           $name = '', $isfile = true,
                           $encoding = 'base64',
                           $disposition = 'attachment', $charset = '')
    {
        $filedata = ($isfile === true) ? $this->_file2str($file)
                                           : $file;
        if ($isfile === true) {
            // Force the name the user supplied, otherwise use $file
            $filename = (!empty($name)) ? $name : $file;
        } else {
            $filename = $name;
        }
        if (empty($filename)) {
            $err = PEAR::raiseError(
              "The supplied filename for the attachment can't be empty"