function swftools_file_download in SWF Tools 6.3

Same name and namespace in other branches

1. 5 swftools.module \swftools_file_download()
2. 6 swftools.module \swftools_file_download()
3. 6.2 swftools.module \swftools_file_download()

Implementation of hook_file_download().

Allows SWF Tools to work with a private file system that might include files uploaded outside the control of an upload module, e.g. FTP of large video files.

If the file is of a supported type, based on extension, then return a valid header. If any other module returns -1 for this file then access will be denied even if SWF Tools tries to allow it. See hook_file_download() for details.

File

./swftools.module, line 1328

The primary component of SWF Tools that enables comprehensive media handling.

Code

function swftools_file_download($file) {

  // If SWF Tools is allowed to grant access then check to see if access will be allowed
  if (variable_get('swftools_grant_access_to_private_files', SWFTOOLS_PRIVATE_ACCESS_DENIED)) {

    // Get extension of file in question
    $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION));

    // Get list of extensions that SWF Tools can grant access to
    $extensions = variable_get('swftools_grant_access_extensions', SWFTOOLS_PRIVATE_ACCESS_ALLOWED_EXTENSIONS);

    // Need access to the user object
    global $user;

    // Check if SWF Tools should grant access to this extension - skip the check for user #1
    if ($user->uid != 1) {
      $regex = '/\\.(' . ereg_replace(' +', '|', preg_quote($extensions)) . ')$/i';
      if (!preg_match($regex, $file)) {
        return;
      }
    }

    // Build an array of types that SWF Tools can react to
    $mime_types = _swftools_mime_types();

    // If file is one of the above types, based on the extension, return headers
    if (isset($mime_types[$extension])) {
      return array(
        'Content-Type: ' . $mime_types[$extension],
        'Content-Length: ' . filesize(file_create_path($file)),
      );
    }
  }
}