Method: Themis::Scomparator#proceed_compare

Defined in:

lib/rbthemis.rb

#proceed_compare(control_message) ⇒ Object

# File 'lib/rbthemis.rb', line 1004

def proceed_compare(control_message)
  message, message_length = string_to_pointer_size(control_message)
  res_length = FFI::MemoryPointer.new(:uint)

  res = secure_comparator_proceed_compare(
    @comparator, message, message_length, nil, res_length)
  return '' if res == SUCCESS
  if res != BUFFER_TOO_SMALL
    raise ThemisError, 'Secure Comparator failed proceeding message'
  end

  res_buffer = FFI::MemoryPointer.new(:char, res_length.read_uint)
  res = secure_comparator_proceed_compare(
    @comparator, message, message_length, res_buffer, res_length)
  if res != SUCCESS && res != SEND_AS_IS
    raise ThemisError, 'Secure Comparator failed proceeding message'
  end

  res_buffer.get_bytes(0, res_length.read_uint)
end