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source: trunk/sources/HeuristicLab.Clients.Access/3.3/UserInformation.cs @ 8043

Last change on this file since 8043 was 8043, checked in by ascheibe, 12 years ago

#1648 display an error message if a user lacks the appropriate roles for the user administration

File size: 2.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.ServiceModel.Security;
24
25namespace HeuristicLab.Clients.Access {
26  public sealed class UserInformation {
27    public const string AdministratorRoleName = "AccessService Administrator";
28
29    private static UserInformation instance;
30    public static UserInformation Instance {
31      get {
32        if (instance == null) instance = new UserInformation();
33        return instance;
34      }
35    }
36
37    private string userName;
38    public string UserName {
39      get { return userName; }
40    }
41
42    private bool userExists = false;
43    public bool UserExists {
44      get { return userExists; }
45    }
46
47    private LightweightUser user;
48    public LightweightUser User {
49      get { return user; }
50    }
51
52    private bool errorOccured;
53    public bool ErrorOccured {
54      get { return errorOccured; }
55    }
56
57    private Exception occuredException;
58    public Exception OccuredException {
59      get { return occuredException; }
60    }
61
62    private UserInformation() {
63      //this blocks, so there should be anywhere in the Optimizer startup process
64      //a call to FetchUserInformationFromServerAsync which is non-blocking
65      FetchUserInformationFromServer();
66    }
67
68
69    private void FetchUserInformationFromServer() {
70      userName = HeuristicLab.Clients.Common.Properties.Settings.Default.UserName;
71
72      try {
73        AccessClient.CallAccessService(x => user = x.Login());
74        errorOccured = false;
75        userExists = true;
76        occuredException = null;
77      }
78      catch (MessageSecurityException e) {
79        //wrong username or password
80        errorOccured = false;
81        userExists = false;
82        occuredException = e;
83      }
84      catch (Exception e) {
85        errorOccured = true;
86        userExists = false;
87        occuredException = e;
88      }
89    }
90
91    public void Refresh() {
92      FetchUserInformationFromServer();
93    }
94  }
95}
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