/**
 * Extracts a binary resource and write it to the specified output file.
 *
 * @param output_filename filename of the output file
 * @param resource_id resource id of object to extract from the resource file
 *
 * @author Jacob Hammack
 *
 */
void extract_resource(TCHAR *output_filename, int resource_id)
{
  HGLOBAL resource_handle = NULL;
  HANDLE file_handle;
  HRSRC resource;
  TCHAR *resource_data;
  DWORD resource_size;
  DWORD bytes_written = 0;
 
  if(!(resource = FindResource(0, MAKEINTRESOURCE(resource_id), RT_RCDATA))
  {
    return;
  }
 
  if(!(res_handle = LoadResource(NULL, resource)))
  {
    return;
  }
 
  resource_data = (TCHAR*) LockResource(resource_handle);
  resource_size = SizeofResource(NULL, resource);
 
  file_handle = CreateFile(output_filename, GENERIC_WRITE, FILE_SHARE_WRITE,0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
 
  if(file_handle == INVALID_HANDLE_VALUE)
  {
    _tprintf(TEXT("[!] Unable to create file handle for writing temp data to disk.\n"));
 
    return;
  }
 
  while(bytes_written < resource_size)
  {
    if(FALSE == WriteFile(file_handle, resource_data + bytes_written, resource_size - bytes_written, &bytes_written, NULL))
    {
      CloseHandle(file_handle);
 
      return;
    }
  }
 
  CloseHandle(file_handle);
}