Stopping the systemd service via a c program.c

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

int main() {
    DBusError error;
    DBusConnection *bus;
    DBusMessage *message, *reply;

    dbus_error_init(&error);

    // Connect to the system bus
    bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
    if (dbus_error_is_set(&error)) {
        fprintf(stderr, "Error connecting to the system bus: %s\n", error.message);
        dbus_error_free(&error);
        exit(EXIT_FAILURE);
    }

    // Create a message to stop the service
    message = dbus_message_new_method_call("org.freedesktop.systemd1",
                                           "/org/freedesktop/systemd1",
                                           "org.freedesktop.systemd1.Manager",
                                           "StopUnit");
    dbus_message_append_args(message,
                             DBUS_TYPE_STRING, "service-name.service",
                             DBUS_TYPE_STRING, "replace",
                             &error);

    // Send the message and wait for a reply
    reply = dbus_connection_send_with_reply_and_block(bus, message, -1, &error);
    if (dbus_error_is_set(&error)) {
        fprintf(stderr, "Error sending message: %s\n", error.message);
        dbus_error_free(&error);
        exit(EXIT_FAILURE);
    }

    dbus_message_unref(message);
    dbus_message_unref(reply);
    dbus_connection_unref(bus);

    return EXIT_SUCCESS;
}