email.php

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<?php
/*
  $Id: email.php,v 1.7 2002/05/23 16:51:47 dgw_ Exp $

 网络商店 - 吉鑫网络
 http://www.chinaifc.com

Copyright (c) 2001,2003 网络商店

    汗化版权所有吉鑫网络
*/

class email {
  var $html;
  var $text;
  var $output;
  var $html_text;
  var $html_images;
  var $image_types;
  var $build_params;
  var $attachments;
  var $headers;

  /***************************************
   ** Constructor function. Sets the headers
   ** if supplied.
   ***************************************/

  function email($headers = array()) {

  /***************************************
   ** Initialise some variables.
   ***************************************/

    $this->html_images  = array();
    $this->headers      = array();

    // Makesure we use the correct linefeed sequence
    if (EMAIL_LINEFEED == 'CRLF') {
      $this->lf = "\r\n";
    } else {
      $this->lf = "\n";
    }

    /***************************************
     ** If you want the auto load functionality
     ** to find other mime-image/file types, add the
     ** extension and content type here.
     ***************************************/

    $this->image_types = array(
      'gif'  => 'image/gif',
      'jpg'  => 'image/jpeg',
      'jpeg' => 'image/jpeg',
      'jpe'  => 'image/jpeg',
      'bmp'  => 'image/bmp',
      'png'  => 'image/png',
      'tif'  => 'image/tiff',
      'tiff' => 'image/tiff',
      'swf'  => 'application/x-shockwave-flash'
    );

    /***************************************
     ** Set these up
     ***************************************/

    $this->build_params['html_encoding']  = 'quoted-printable';
    $this->build_params['text_encoding']  = '7bit';
    $this->build_params['html_charset']    = 'GB2312';
    $this->build_params['text_charset']    = 'GB2312';
    $this->build_params['text_wrap']    = 998;

    /***************************************
     ** Make sure the MIME version header is first.
     ***************************************/

    $this->headers[] = 'MIME-Version: 1.0';

    reset($headers);
    while (list(,$value) = each($headers)) {
      if(!empty($value))
        $this->headers[] = $value;
    }
  }

  /***************************************
  ** This function will read a file in
  ** from a supplied filename and return
  ** it. This can then be given as the first
  ** argument of the the functions
  ** add_html_image() or add_attachment().
  ***************************************/

  function get_file($filename) {

    $return = '';
    if($fp = fopen($filename, 'rb')) {
      while(!feof($fp)) {
        $return .= fread($fp, 1024);
      }
      fclose($fp);
      return $return;

    } else {
      return FALSE;
    }
  }

  /***************************************
  ** Function for extracting images from
  ** html source. This function will look
  ** through the html code supplied by add_html()
  ** and find any file that ends in one of the
  ** extensions defined in $obj->image_types.
  ** If the file exists it will read it in and
  ** embed it, (not an attachment).
  **
  ** Function contributed by Dan Allen
  ***************************************/

  function find_html_images($images_dir) {

    // Build the list of image extensions
    while(list($key,) = each($this->image_types))
      $extensions[] = $key;

    preg_match_all('/"([^"]+\.('.implode('|', $extensions).'))"/Ui', $this->html, $images);

    for($i=0; $i<count($images[1]); $i++) {
      if(file_exists($images_dir.$images[1][$i])) {
        $html_images[] = $images[1][$i];
        $this->html = str_replace($images[1][$i], basename($images[1][$i]), $this->html);
      }
    }

    if(!empty($html_images)) {

      // If duplicate images are embedded, they may show up as attachments, so remove them.
      $html_images = array_unique($html_images);
      sort($html_images);
  
      for($i=0; $i<count($html_images); $i++) {
        if($image = $this->get_file($images_dir.$html_images[$i])) {
          $content_type = $this->image_types[substr($html_images[$i], strrpos($html_images[$i], '.') + 1)];
          $this->add_html_image($image, basename($html_images[$i]), $content_type);
        }
      }
    }
  }

  /***************************************
  ** Adds plain text. Use this function
  ** when NOT sending html email
  ***************************************/

  function add_text($text = '') {
    $this->text = $text;
  }

/***************************************
** Adds a html part to the mail.
** Also replaces image names with
** content-id's.
***************************************/

  function add_html($html, $text = NULL, $images_dir = NULL) {
    $this->html       = $html;
    $this->html_text  = $text;
    if(isset($images_dir))
      $this->find_html_images($images_dir);
  }

  /***************************************
  ** Adds an image to the list of embedded
  ** images.
  ***************************************/

  function add_html_image($file, $name = '', $c_type='application/octet-stream') {
    $this->html_images[] = array(
                                  'body'   => $file,
                                  'name'   => $name,
                                  'c_type' => $c_type,
                                  'cid'    => md5(uniqid(time()))
                                );
  }

  /***************************************
  ** Adds a file to the list of attachments.
  ***************************************/

  function add_attachment($file, $name = '', $c_type='application/octet-stream', $encoding = 'base64') {
    $this->attachments[] = array(
                                  'body'    => $file,
                                  'name'    => $name,
                                  'c_type'  => $c_type,
                                  'encoding'  => $encoding
                                );
  }

  /***************************************
   ** Adds a text subpart to a mime_part object
   ***************************************/

  function &add_text_part(&$obj, $text) {
    $params['content_type'] = 'text/plain';
    $params['encoding']     = $this->build_params['text_encoding'];
    $params['charset']      = $this->build_params['text_charset'];
    if(is_object($obj)) {
      return $obj->addSubpart($text, $params);
    } else {
      return new mime($text, $params);
    }
  }

  /***************************************
   ** Adds a html subpart to a mime_part object
   ***************************************/

  function &add_html_part(&$obj) {
    $params['content_type'] = 'text/html';
    $params['encoding']     = $this->build_params['html_encoding'];
    $params['charset']      = $this->build_params['html_charset'];
    if(is_object($obj)) {
      return $obj->addSubpart($this->html, $params);
    } else {
      return new mime($this->html, $params);
    }
  }

  /***************************************
   ** Starts a message with a mixed part
   ***************************************/

  function &add_mixed_part() {

    $params['content_type'] = 'multipart/mixed';
    return new mime('', $params);
  }

/***************************************
** Adds an alternative part to a mime_part object
***************************************/

  function &add_alternative_part(&$obj) {

    $params['content_type'] = 'multipart/alternative';
    if(is_object($obj)) {
      return $obj->addSubpart('', $params);
    } else {