function file_force_file_download in File Force Download 5

Same name and namespace in other branches

1. 6.2 file_force.module \file_force_file_download()
2. 6 file_force.module \file_force_file_download()
3. 7 file_force.module \file_force_file_download()

Implementation of hook_file_download(). This is what adds the headers which activates the force downloading.

File

./file_force.module, line 36

Code

function file_force_file_download($filepath) {
  if (!defined('FILE_FORCE_ACTIVE')) {

    // Our menu hook wasn't called, so we should ignore this.
    return NULL;
  }
  return array(
    'Content-Type: application/octet-stream',
    'Content-Disposition: attachment; filename="' . basename($filepath) . '";',
    // Content-Length is also a good header to send, as it allows the browser to
    // display a progress bar correctly. It looks like on D5, the Upload module
    // does this too if it's installed, but not on D6. So let's do it ourselves
    // just in case.
    // There's a trick for determining the file size for files over 2 GB. Nobody
    // should be using this module with files that large, but… the sprintf()
    // trickery makes sure the value is correct for files larger than 2GB. See
    // note at http://php.net/filesize
    'Content-Length: ' . sprintf('%u', filesize($filepath)),
  );
}