private AsyncAction.SudoElevationResult GetElevatedSession(List <Role> allowedRoles,
IXenConnection connection, string actionTitle)
{
AsyncAction.SudoElevationResult result = null;
Program.Invoke(Program.MainWindow, () =>
{
Form owner;
try
{
//CA-337323: make an attempt to find the right owning form
//most likely it will be the last one opened
owner = Application.OpenForms.Cast <Form>().Last();
}
catch
{
owner = Program.MainWindow;
}
using (var d = new RoleElevationDialog(connection, connection.Session, allowedRoles, actionTitle))
if (d.ShowDialog(owner) == DialogResult.OK)
{
result = new AsyncAction.SudoElevationResult(d.elevatedUsername, d.elevatedPassword, d.elevatedSession);
}
});
return(result);
}
private void EnterMaintenanceMode(Host host)
{
Pool pool = Helpers.GetPool(host.Connection);
if (pool != null && pool.ha_enabled && host.IsMaster())
{
using (var dlg = new ErrorDialog(string.Format(Messages.HA_CANNOT_EVACUATE_MASTER,
Helpers.GetName(host).Ellipsise(Helpers.DEFAULT_NAME_TRIM_LENGTH))))
{
dlg.ShowDialog(Parent);
}
return;
}
if (!host.GetRunningVMs().Any() &&
(pool == null || pool.Connection.Cache.Hosts.Length == 1 || !host.IsMaster()))
{
Program.MainWindow.CloseActiveWizards(host.Connection);
var action = new EvacuateHostAction(host, null, new Dictionary <XenRef <VM>, string[]>(), AddHostToPoolCommand.NtolDialog, AddHostToPoolCommand.EnableNtolDialog);
action.Completed += Program.MainWindow.action_Completed;
action.RunAsync();
return;
}
//The EvacuateHostDialog uses several different actions all of which might need an elevated session
//We sudo once for all of them and store the session
string elevatedUsername = null;
string elevatedPassword = null;
Session elevatedSession = null;
if (!host.Connection.Session.IsLocalSuperuser &&
!Registry.DontSudo &&
!Role.CanPerform(new RbacMethodList(EvacuateHostDialog.RbacMethods), host.Connection, out var validRoles))
{
using (var d = new RoleElevationDialog(host.Connection, host.Connection.Session, validRoles,
string.Format(Messages.EVACUATE_HOST_DIALOG_TITLE, host.Name())))
if (d.ShowDialog(Program.MainWindow) == DialogResult.OK)
{
elevatedUsername = d.elevatedUsername;
elevatedPassword = d.elevatedPassword;
elevatedSession = d.elevatedSession;
}
else
{
return;
}
}
new EvacuateHostDialog(host, elevatedUsername, elevatedPassword, elevatedSession)
.ShowPerXenObject(host, Program.MainWindow);
}
