gdbus-smartcard.js

const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;


const ifaceXml = `
<node>
    <interface name="org.gnome.SettingsDaemon.Smartcard.Token">
        <property name="Name" type="s" access="read"/>
        <property name="Driver" type="o" access="read"/>
        <property name="IsInserted" type="b" access="read"/>
        <property name="UsedToLogin" type="b" access="read"/>
    </interface>
</node>
`;

const TestProxy = Gio.DBusProxy.makeProxyWrapper(ifaceXml);

let proxy = null;

function onNameAppeared(connection, name, _owner) {
    print(`"${name}" appeared on the session bus`);

    try {
        proxy = new TestProxy(
            Gio.DBus.session,
            'org.gnome.SettingsDaemon.Smartcard',
            '/org/gnome/SettingsDaemon/Smartcard/Manager/Tokens/token_from_p11_2d_kit_2d_proxy_2e_so_slot_17'
        );
    } catch (err) {
        logError(err);
        return;
    }

    proxy.connect('g-properties-changed', (proxy_, changed, invalidated) => {
        for (let [prop, value] of Object.entries(changed.deepUnpack()))
            print(`Property '${prop}' changed to '${value.deepUnpack()}'`);

        for (let prop of invalidated)
            print(`Property '${prop}' invalidated`);
    });
}

function onNameVanished(connection, name) {
    print(`"${name}" vanished from the session bus`);

    proxy = null;
}

let busWatchId = Gio.bus_watch_name(
    Gio.BusType.SESSION,
    'org.gnome.SettingsDaemon.Smartcard', // <-- well-known name of the service
    Gio.BusNameWatcherFlags.NONE,
    onNameAppeared,
    onNameVanished
);

let loop = GLib.MainLoop.new(null, false);
loop.run();

Gio.bus_unown_name(busWatchId);