001/*
002 * Copyright (c) 2017 The Regents of the University of California.
003 * All rights reserved.
004 *
005 * '$Author: crawl $'
006 * '$Date: 2017-07-01 16:08:56 -0700 (Sat, 01 Jul 2017) $' 
007 * '$Revision: 1242 $'
008 * 
009 * Permission is hereby granted, without written agreement and without
010 * license or royalty fees, to use, copy, modify, and distribute this
011 * software and its documentation for any purpose, provided that the above
012 * copyright notice and the following two paragraphs appear in all copies
013 * of this software.
014 *
015 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
016 * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
017 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
018 * THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
019 * SUCH DAMAGE.
020 *
021 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
022 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
023 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
024 * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
025 * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
026 * ENHANCEMENTS, OR MODIFICATIONS.
027 *
028 */
029package org.kepler.webview.server.auth;
030
031import java.util.HashSet;
032import java.util.Set;
033
034import io.vertx.ext.auth.User;
035
036/** Utilities for authentication. 
037 * 
038 *  @author Daniel Crawl
039 *  @version $Id: AuthUtilities.java 1242 2017-07-01 23:08:56Z crawl $
040 */
041public class AuthUtilities {
042
043    /** Get the groups for a vertx user. 
044     * @param user The vertx user.
045     * @return a set of group names that the user belongs to.
046     */
047    public static Set<String> getGroups(User user) {
048        
049        Set<String> groupSet = new HashSet<String>();        
050        String groups = user.principal().getString("groups");
051        if(groups != null) {
052            for(String group : groups.split(",")) {
053                groupSet.add(group.trim());
054            }
055        }
056        return groupSet;
057    }
058}