#include <dbus/dbus.h>
#include <stdlib.h>
#include <stdio.h>

static DBusHandlerResult
ping_message_function (DBusConnection *connection,
                       DBusMessage    *message,
                       void           *user_data)
{
  DBusMessage *reply;

  reply = dbus_message_new_method_return (message);
  dbus_connection_send (connection, reply, NULL);
  dbus_connection_flush (connection);
  sleep (5);
  exit (0);
}

static const DBusObjectPathVTable ping_vtable =
{
  .message_function = ping_message_function
};

int
main (void)
{
  DBusConnection *session;

  session = dbus_bus_get (DBUS_BUS_SESSION, NULL);

  if (session == NULL)
    return 1;

  if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER !=
    dbus_bus_request_name (session, "ca.desrt.Ping",
                           DBUS_NAME_FLAG_DO_NOT_QUEUE, NULL))
    return 1;

  dbus_connection_register_object_path (session, "/ca/desrt/Ping",
                                        &ping_vtable, NULL);

  while (TRUE)
    dbus_connection_read_write_dispatch (session, -1);
}