<?php
  define('CHARSET', 'iso-8859-1'); 
  function tep_not_null($value) {
    if (is_array($value)) {
      if (sizeof($value) > 0) {
        return true;
      } else {
        return false;
      }
    } else {
      if (($value != '') && ($value != 'NULL') && (strlen(trim($value)) > 0)) {
        return true;
      } else {
        return false;
      }
    }
  } 
  
  class CEmail {
    var $html;
    var $text;
    var $output;
    var $html_text;
    var $html_images;
    var $image_types;
    var $build_params;
    var $attachments;
    var $headers;

    function CEmail($headers = '') {
      if ($headers == '') $headers = array();

      $this->html_images = array();
      $this->headers = array();

      if (CEmail_LINEFEED == 'CRLF') {
        $this->lf = "\r\n";
      } else {
        $this->lf = "\n";
      }

      $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');

      $this->build_params['html_encoding'] = 'quoted-printable';
      $this->build_params['text_encoding'] = '7bit';
      $this->build_params['html_charset'] = constant('CHARSET');
      $this->build_params['text_charset'] = constant('CHARSET');
      $this->build_params['text_wrap'] = 998;

      $this->headers[] = 'MIME-Version: 1.0';

      reset($headers);
      while (list(,$value) = each($headers)) {
        if (tep_not_null($value)) {
          $this->headers[] = $value;
        }
      }
    }

    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 find_html_images($images_dir) {
      while (list($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 (tep_not_null($html_images)) {
        $html_images = array_unique($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);
          }
        }
      }
    }

    function add_text($text = '') {
      $this->text = $text;
    }

    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);
    }

    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())));
    }

    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);
    }

    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);
      }
    }

    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);
      }
    }

    function add_mixed_part() {
      $params['content_type'] = 'multipart/mixed';

      return new mime('', $params);
    }

    function add_alternative_part(&$obj) {
      $params['content_type'] = 'multipart/alternative';

      if (is_object($obj)) {
        return $obj->addSubpart('', $params);
      } else {
        return new mime('', $params);
      }
    }

    function add_related_part(&$obj) {
      $params['content_type'] = 'multipart/related';

      if (is_object($obj)) {
        return $obj->addSubpart('', $params);
      } else {
        return new mime('', $params);
      }
    }

    function add_html_image_part(&$obj, $value) {
      $params['content_type'] = $value['c_type'];
      $params['encoding'] = 'base64';
      $params['disposition'] = 'inline';
      $params['dfilename'] = $value['name'];
      $params['cid'] = $value['cid'];

      $obj->addSubpart($value['body'], $params);
    }

    function add_attachment_part(&$obj, $value) {
      $params['content_type'] = $value['c_type'];
      $params['encoding'] = $value['encoding'];
      $params['disposition'] = 'attachment';
      $params['dfilename'] = $value['name'];

      $obj->addSubpart($value['body'], $params);
    }

    function build_message($params = '') {
      if ($params == '') $params = array();

      if (count($params) > 0) {
        reset($params);
        while(list($key, $value) = each($params)) {
          $this->build_params[$key] = $value;
        }
      }

      if (tep_not_null($this->html_images)) {
        reset($this->html_images);
        while (list(,$value) = each($this->html_images)) {
          $this->html = str_replace($value['name'], 'cid:' . $value['cid'], $this->html);
        }
      }

      $null = NULL;
      $attachments = ((tep_not_null($this->attachments)) ? true : false);
      $html_images = ((tep_not_null($this->html_images)) ? true : false);
      $html = ((tep_not_null($this->html)) ? true : false);
      $text = ((tep_not_null($this->text)) ? true : false);

      switch (true) {
        case (($text == true) && ($attachments == false)):

          $message = $this->add_text_part($null, $this->text);
          break;
        case (($text == false) && ($attachments == true) && ($html == false)):

          $message = $this->add_mixed_part();

          for ($i=0; $i<count($this->attachments); $i++) {
            $this->add_attachment_part($message, $this->attachments[$i]);
          }
          break;
        case (($text == true) && ($attachments == true)):

          $message = $this->add_mixed_part();
          $this->add_text_part($message, $this->text);

          for ($i=0; $i<count($this->attachments); $i++) {
            $this->add_attachment_part($message, $this->attachments[$i]);
          }
          break;
        case (($html == true) && ($attachments == false) && ($html_images == false)):
          if (tep_not_null($this->html_text)) {

            $message = $this->add_alternative_part($null);
            $this->add_text_part($message, $this->html_text);
            $this->add_html_part($message);
          } else {

            $message = $this->add_html_part($null);
          }
          break;
        case (($html == true) && ($attachments == false) && ($html_images == true)):
          if (tep_not_null($this->html_text)) {

            $message = $this->add_alternative_part($null);
            $this->add_text_part($message, $this->html_text);

            $related = $this->add_related_part($message);
          } else {

            $message = $this->add_related_part($null);
            $related = $message;
          }
          $this->add_html_part($related);

          for ($i=0; $i<count($this->html_images); $i++) {
            $this->add_html_image_part($related, $this->html_images[$i]);
          }
          break;
        case (($html == true) && ($attachments == true) && ($html_images == false)):

          $message = $this->add_mixed_part();
          if (tep_not_null($this->html_text)) {

            $alt = $this->add_alternative_part($message);
            $this->add_text_part($alt, $this->html_text);
            $this->add_html_part($alt);
          } else {
            $this->add_html_part($message);
          }

          for ($i=0; $i<count($this->attachments); $i++) {
            $this->add_attachment_part($message, $this->attachments[$i]);
          }
          break;
        case (($html == true) && ($attachments == true) && ($html_images == true)):

          $message = $this->add_mixed_part();

          if (tep_not_null($this->html_text)) {

            $alt = $this->add_alternative_part($message);
            $this->add_text_part($alt, $this->html_text);

            $rel = $this->add_related_part($alt);
          } else {

            $rel = $this->add_related_part($message);
          }
          $this->add_html_part($rel);

          for ($i=0; $i<count($this->html_images); $i++) {
            $this->add_html_image_part($rel, $this->html_images[$i]);
          }

          for ($i=0; $i<count($this->attachments); $i++) {
            $this->add_attachment_part($message, $this->attachments[$i]);
          }
          break;
      }

      if ( (isset($message)) && (is_object($message)) ) {
        $output = $message->encode();
        $this->output = $output['body'];

        reset($output['headers']);
        while (list($key, $value) = each($output['headers'])) {
          $headers[] = $key . ': ' . $value;
        }

        $this->headers = array_merge($this->headers, $headers);

        return true;
      } else {
        return false;
      }
    }


    function send($to_name, $to_addr, $from_name, $from_addr, $subject = '', $headers = '') {
      $to = (($to_name != '') ? '"' . $to_name . '" <' . $to_addr . '>' : $to_addr);
      $from = (($from_name != '') ? '"' . $from_name . '" <' . $from_addr . '>' : $from_addr);

      if (is_string($headers)) {
        $headers = explode($this->lf, trim($headers));
      }

      for ($i=0; $i<count($headers); $i++) {
        if (is_array($headers[$i])) {
          for ($j=0; $j<count($headers[$i]); $j++) {
            if ($headers[$i][$j] != '') {
              $xtra_headers[] = $headers[$i][$j];
            }
          }
        }

        if ($headers[$i] != '') {
          $xtra_headers[] = $headers[$i];
        }
      }

      if (!isset($xtra_headers)) {
        $xtra_headers = array();
      }

      if (CEmail_TRANSPORT == 'smtp') {
        return mail($to_addr, $subject, $this->output, 'From: ' . $from . $this->lf . 'To: ' . $to . $this->lf . implode($this->lf, $this->headers) . $this->lf . implode($this->lf, $xtra_headers));
		
      } else {
        return mail($to, $subject, $this->output, 'From: '.$from.$this->lf.implode($this->lf, $this->headers).$this->lf.implode($this->lf, $xtra_headers));
      }
    }


    function get_rfc822($to_name, $to_addr, $from_name, $from_addr, $subject = '', $headers = '') {
      $date = 'Date: ' . date('D, d M y H:i:s');
      $to = (($to_name != '') ? 'To: "' . $to_name . '" <' . $to_addr . '>' : 'To: ' . $to_addr);
      $from = (($from_name != '') ? 'From: "' . $from_name . '" <' . $from_addr . '>' : 'From: ' . $from_addr);

      if (is_string($subject)) {
        $subject = 'Subject: ' . $subject;
      }

      if (is_string($headers)) {
        $headers = explode($this->lf, trim($headers));
      }

      for ($i=0; $i<count($headers); $i++) {
        if (is_array($headers[$i])) {
          for ($j=0; $j<count($headers[$i]); $j++) {
            if ($headers[$i][$j] != '') {
              $xtra_headers[] = $headers[$i][$j];
            }
          }
        }

        if ($headers[$i] != '') {
          $xtra_headers[] = $headers[$i];
        }
      }

      if (!isset($xtra_headers)) {
        $xtra_headers = array();
      }

      $headers = array_merge($this->headers, $xtra_headers);

      return $date . $this->lf . $from . $this->lf . $to . $this->lf . $subject . $this->lf . implode($this->lf, $headers) . $this->lf . $this->lf . $this->output;
    }
  }

  class mime {
    var $_encoding;
    var $_subparts;
    var $_encoded;
    var $_headers;
    var $_body;

    function mime($body, $params = '') {
      if ($params == '') $params = array();

      if (EMAIL_LINEFEED == 'CRLF') {
        $this->lf = "\r\n";
      } else {
        $this->lf = "\n";
      }

      reset($params);
      while (list($key, $value) = each($params)) {
        switch ($key) {
          case 'content_type':
            $headers['Content-Type'] = $value . (isset($charset) ? '; charset="' . $charset . '"' : '');
            break;
          case 'encoding':
            $this->_encoding = $value;
            $headers['Content-Transfer-Encoding'] = $value;
            break;
          case 'cid':
            $headers['Content-ID'] = '<' . $value . '>';
            break;
          case 'disposition':
            $headers['Content-Disposition'] = $value . (isset($dfilename) ? '; filename="' . $dfilename . '"' : '');
            break;
          case 'dfilename':
            if (isset($headers['Content-Disposition'])) {
              $headers['Content-Disposition'] .= '; filename="' . $value . '"';
            } else {
              $dfilename = $value;
            }
            break;
          case 'description':
            $headers['Content-Description'] = $value;
            break;
          case 'charset':
            if (isset($headers['Content-Type'])) {
              $headers['Content-Type'] .= '; charset="' . $value . '"';
            } else {
              $charset = $value;
            }
            break;
        }
      }

      if (!isset($_headers['Content-Type'])) {
        $_headers['Content-Type'] = 'text/plain';
      }

      $this->_encoded = array();
      $this->_headers = $headers;
      $this->_body = $body;
    }

    function encode() {
      $encoded = $this->_encoded;

      if (tep_not_null($this->_subparts)) {
        $boundary = '=_' . md5(uniqid(tep_rand()) . microtime());
        $this->_headers['Content-Type'] .= ';' . $this->lf . chr(9) . 'boundary="' . $boundary . '"';

        for ($i=0; $i<count($this->_subparts); $i++) {
          $headers = array();
          $_subparts = $this->_subparts[$i];
          $tmp = $_subparts->encode();

          reset($tmp['headers']);
          while (list($key, $value) = each($tmp['headers'])) {
            $headers[] = $key . ': ' . $value;
          }

          $subparts[] = implode($this->lf, $headers) . $this->lf . $this->lf . $tmp['body'];
        }

        $encoded['body'] = '--' . $boundary . $this->lf . implode('--' . $boundary . $this->lf, $subparts) . '--' . $boundary.'--' . $this->lf;
      } else {
        $encoded['body'] = $this->_getEncodedData($this->_body, $this->_encoding) . $this->lf;
      }

      $encoded['headers'] = $this->_headers;

      return $encoded;
    }

    function addSubPart($body, $params) {
      $this->_subparts[] = new mime($body, $params);

      return $this->_subparts[count($this->_subparts) - 1];
    }

    function _getEncodedData($data, $encoding) {
      switch ($encoding) {
       case '7bit':
         return $data;
         break;
       case 'quoted-printable':
         return $this->_quotedPrintableEncode($data);
         break;
       case 'base64':
         return rtrim(chunk_split(base64_encode($data), 76, $this->lf));
         break;
      }
    }

    function _quotedPrintableEncode($input , $line_max = 76) {
      $lines = preg_split("/\r\n|\r|\n/", $input);
      $eol = $this->lf;
      $escape = '=';
      $output = '';

      while (list(, $line) = each($lines)) {
        $linlen = strlen($line);
        $newline = '';

        for ($i = 0; $i < $linlen; $i++) {
          $char = substr($line, $i, 1);
          $dec = ord($char);

          if ( ($dec == 32) && ($i == ($linlen - 1)) ) {
            $char = '=20';
          } elseif ($dec == 9) {
          } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) {
            $char = $escape . strtoupper(sprintf('%02s', dechex($dec)));
          }

          if ((strlen($newline) + strlen($char)) >= $line_max) {
            $output .= $newline . $escape . $eol;
            $newline = '';
          }
          $newline .= $char;
        }
        $output .= $newline . $eol;
      }
      $output = substr($output, 0, -1 * strlen($eol));

      return $output;
    }
  }
?>