utils.py 文件源码

def clear_token_from_ubuntu_sso_sync(appname):
    """ send a dbus signal to the com.ubuntu.sso service to clear
        the credentials for the given appname, e.g. _("Ubuntu Software Center")
        and wait for it to finish (or 2s)
    """
    from ubuntu_sso import (
        DBUS_BUS_NAME,
        DBUS_CREDENTIALS_IFACE,
        DBUS_CREDENTIALS_PATH,
        )
    # clean
    loop = GObject.MainLoop()
    bus = dbus.SessionBus()
    obj = bus.get_object(bus_name=DBUS_BUS_NAME,
                         object_path=DBUS_CREDENTIALS_PATH,
                         follow_name_owner_changes=True)
    proxy = dbus.Interface(object=obj,
                           dbus_interface=DBUS_CREDENTIALS_IFACE)
    proxy.connect_to_signal("CredentialsCleared", loop.quit)
    proxy.connect_to_signal("CredentialsNotFound", loop.quit)
    proxy.connect_to_signal("CredentialsError", loop.quit)
    proxy.clear_credentials(appname, {})
    # ensure we don't hang forever here
    GObject.timeout_add_seconds(2, loop.quit)
    # run the mainloop until the credentials are clear
    loop.run()