eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/store/LoginManager.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.store;
  12
  13 import java.util.Observable;
  14
  15 import org.eclipse.core.runtime.IProgressMonitor;
  16 import org.eclipse.ui.IMemento;
  17 import org.springframework.security.authentication.BadCredentialsException;
  18 import org.springframework.security.authentication.LockedException;
  19 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
  20 import org.springframework.security.core.Authentication;
  21 import org.springframework.security.core.context.SecurityContextHolder;
  22
  23 import eu.etaxonomy.cdm.api.conversation.ConversationHolder;
  24 import eu.etaxonomy.cdm.api.conversation.IConversationEnabled;
  25 import eu.etaxonomy.cdm.model.common.User;
  26 import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;
  27 import eu.etaxonomy.taxeditor.model.IContextListener;
  28
  29 /**
  30  * <p>LoginManager class.</p>
  31  *
  32  * @author n.hoffmann
  33  * @created 03.07.2009
  34  * @version 1.0
  35  */
  36 public class LoginManager extends Observable implements IConversationEnabled, IContextListener{
  37
  38         private ConversationHolder conversation;
  39
  40         public LoginManager(){
  41                 CdmStore.getContextManager().addContextListener(this);
  42         }
  43
  44         /**
  45          * <p>authenticate</p>
  46          *
  47          * @param token a {@link org.springframework.security.authentication.UsernamePasswordAuthenticationToken} object.
  48          */
  49         public boolean authenticate(String username, String password){
  50
  51                 // close all open editors
  52                 if(!StoreUtil.closeAll()){
  53                         return false;
  54                 }
  55
  56
  57                 try{
  58                         getConversationHolder().bind();
  59
  60                         SecurityContextHolder.clearContext();
  61
  62                         UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);
  63                         Authentication authentication = CdmStore.getAuthenticationManager().authenticate(token);
  64
  65                         SecurityContextHolder.getContext().setAuthentication(authentication);
  66
  67                         this.setChanged();
  68                         this.notifyObservers();
  69                         return true;
  70                 }
  71                 catch(BadCredentialsException e){
  72                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Bad Credentials.");
  73                 }
  74                 catch(LockedException e){
  75                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Account is locked.");
  76                 }
  77                 catch(IllegalArgumentException e){
  78                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Username and/or Password empty.");
  79                 }
  80                 return false;
  81         }
  82
  83         /**
  84          * <p>getAuthenticatedUser</p>
  85          *
  86          * @return a {@link eu.etaxonomy.cdm.model.common.User} object.
  87          */
  88         public User getAuthenticatedUser(){
  89                 Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
  90
  91                 if(authentication != null
  92                                 && authentication.getPrincipal() != null
  93                                 && authentication.getPrincipal() instanceof User){
  94                         return (User)authentication.getPrincipal();
  95                 }
  96                 return null;
  97         }
  98
  99         public void logoutAll(){
 100                 SecurityContextHolder.clearContext();
 101                 notifyObservers();
 102         }
 103
 104         /* (non-Javadoc)
 105          * @see eu.etaxonomy.cdm.persistence.hibernate.ICdmPostDataChangeObserver#update(eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap)
 106          */
 107         @Override
 108         public void update(CdmDataChangeMap arg) {}
 109
 110         /* (non-Javadoc)
 111          * @see eu.etaxonomy.cdm.api.conversation.IConversationEnabled#getConversationHolder()
 112          */
 113         @Override
 114         public ConversationHolder getConversationHolder() {
 115                 if(conversation == null){
 116                         conversation = CdmStore.createConversation();
 117                 }
 118                 return conversation;
 119         }
 120
 121         /**
 122          * Whether the current user has the role admin
 123          *
 124          * @return
 125          */
 126         public boolean isAdmin() {
 127                 // FIXME until we have rights implemented properly we do this
 128                 // by a simple string check. This has to change
 129
 130                 return "admin".equals(getAuthenticatedUser().getUsername());
 131         }
 132
 133         @Override
 134         public void contextAboutToStop(IMemento memento, IProgressMonitor monitor) {
 135
 136         }
 137
 138         @Override
 139         public void contextStop(IMemento memento, IProgressMonitor monitor) {
 140
 141         }
 142
 143         @Override
 144         public void contextStart(IMemento memento, IProgressMonitor monitor){
 145                 conversation = CdmStore.createConversation();
 146         }
 147
 148         @Override
 149         public void contextRefresh(IProgressMonitor monitor) {
 150                 conversation = CdmStore.createConversation();
 151         }
 152
 153         @Override
 154         public void workbenchShutdown(IMemento memento, IProgressMonitor monitor) {
 155
 156         }
 157 }