Any idea why this code doesn't output an SWF file correctly?

[transparencia]

I want this code to force an SWF file to open on the browser but it doesn't display it right, like parts of the SWF files are missing.

 

Can anybody help in tracking the problem?

 

function _uc_file_download_transfer($file_user, $ip) {

  // Check if any hook_file_transfer_alter calls alter the download.
  foreach (module_implements('file_transfer_alter') as $module) {
    $name = $module .'_file_transfer_alter';
    $file_user->full_path = $name($file_user, $ip, $fid, $file_user->full_path);
  }

  // This could get clobbered, so make a copy.
  $filename = $file_user->filename;

  // Gather relevant info about the file.
  $size = filesize($file_user->full_path);
  $fileinfo = pathinfo($file_user->full_path);
  $mimetype = file_get_mimetype($filename);

  // Workaround for IE filename bug with multiple periods / multiple dots in filename
  // that adds square brackets to filename - eg. setup.abc.exe becomes setup[1].abc.exe
  if (strstr($_SERVER['HTTP_USER_AGENT'], 'MSIE')) {
    $filename = preg_replace('/\./', '%2e', $fileinfo['basename'], substr_count($fileinfo['basename'], '.') - 1);
  }
  else {
    $filename = $fileinfo['basename'];
  }

  // Check if HTTP_RANGE is sent by browser (or download manager)
  if (isset($_SERVER['HTTP_RANGE'])) {
    list($size_unit, $range_orig) = explode('=', $_SERVER['HTTP_RANGE'], 2);

    if ($size_unit == 'bytes') {
      // Multiple ranges could be specified at the same time, but for simplicity only serve the first range
      // See http://tools.ietf.org/id/draft-ietf-http-range-retrieval-00.txt
      list($range, $extra_ranges) = explode(',', $range_orig, 2);
    }
    else {
      $range = '';
    }
  }
  else {
    $range = '';
  }

  // Figure out download piece from range (if set)
  list($seek_start, $seek_end) = explode('-', $range, 2);

  // Set start and end based on range (if set), else set defaults and check for invalid ranges.
  $seek_end = intval((empty($seek_end)) ? ($size - 1) : min(abs(intval($seek_end)), ($size - 1)));
  $seek_start = intval((empty($seek_start) || $seek_end < abs(intval($seek_start))) ? 0 : max(abs(intval($seek_start)), 0));

  ob_end_clean();

  //Only send partial content header if downloading a piece of the file (IE workaround)
  if ($seek_start > 0 || $seek_end < ($size - 1)) {
    drupal_set_header('HTTP/1.1 206 Partial Content');
  }

  // Standard headers, including content-range and length
  drupal_set_header('Pragma: public');
  drupal_set_header('Cache-Control: cache, must-revalidate');
  drupal_set_header('Accept-Ranges: bytes');
  drupal_set_header('Content-Range: bytes '. $seek_start .'-'. $seek_end .'/'. $size);
  drupal_set_header('Content-Type: '. $mimetype);
  drupal_set_header('Content-Disposition: inline; filename="'. $filename .'"');
  drupal_set_header('Content-Length: '. ($seek_end - $seek_start + 1));

  // Last-modified is required for content served dynamically
  drupal_set_header('Last-modified: '. format_date(filemtime($file_user->full_path), 'large'));

  // Etag header is required for Firefox3 and other managers
  drupal_set_header('ETag: '. md5($file_user->full_path));

  // Open the file and seek to starting byte
  $fp = fopen($file_user->full_path, 'r');
  fseek($fp, $seek_start);

  // Start buffered download
  while (!feof($fp)) {

    // Reset time limit for large files
    set_time_limit(0);

    // Push the data to the client.
    print(fread($fp, UC_FILE_BYTE_SIZE));
    flush();
    ob_flush();
  }

  // Finished serving the file, close the stream and log the download to the user table
  fclose($fp);

  _uc_file_log_download($file_user, $ip);

}

 

[transparencia]

Is there any problem in opening a SWF trough a buffered transfer?

 

This is what is happening:

 

 // Open the file and seek to starting byte
  $fp = fopen($file_user->full_path, 'r');
  fseek($fp, $seek_start);

  // Start buffered download
  while (!feof($fp)) {

    // Reset time limit for large files
    set_time_limit(0);

    // Push the data to the client.
    print(fread($fp, UC_FILE_BYTE_SIZE));
    flush();
    ob_flush();
  }

 

How can I change this to make a normal transfer, an un-buffered download?