/*
 * $ gcc `pkg-config --cflags dbus-1` `pkg-config --ldflags dbus-1` -o dbus_setuid dbus_setuid.c
 * # chown root:root dbus_setuid
 * # chmod u+s dbus_setuid
 * $ ./dbus_setuid
 */

#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <dbus/dbus.h>

int main(int argc, char **argv)
{
	DBusConnection	*dbus = NULL;
	DBusError		error;

	printf("UID: %u | EUID: %u\n", getuid(), geteuid());
	dbus_error_init(&error);
	if (!(dbus = dbus_bus_get(DBUS_BUS_SYSTEM, &error)))
	{

		printf("Connection failed: %s\n", error.message);
		dbus_error_free(&error);
		return (1);
	}

	printf("Connected.\n");
	dbus_connection_unref(dbus);
	return (0);
}