| /* |
| * Copyright (c) 2015 Eike Stepper (Berlin, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.userstorage.spi; |
| |
| import org.eclipse.userstorage.IStorageService; |
| import org.eclipse.userstorage.internal.Activator; |
| |
| /** |
| * Provides the user's credentials for a given {@link IStorageService storage service}. |
| * |
| * @author Eike Stepper |
| */ |
| public interface ICredentialsProvider |
| { |
| /** |
| * A credentials provider that returns no credentials and, hence, simulates authentication cancelation. |
| */ |
| public static final ICredentialsProvider CANCEL = Activator.CANCEL_CREDENTIALS_PROVIDER; |
| |
| /** |
| * Provides the user's credentials for the given {@link IStorageService storage service}. |
| * <p> |
| * |
| * @param service the storage service for which to provide the user's credentials, must not be <code>null</code>.<p> |
| * @param reauthentication <code>true</code> if this method has been called before (and returned wrong credentials), <code>false</code> if this call is the first. |
| * @return the user's credentials for the given storage service, |
| * or <code>null</code> as an indication to cancel the authentication process.<p> |
| */ |
| public Credentials provideCredentials(IStorageService service, boolean reauthentication); |
| } |