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.IEditorPart;
  17 import org.eclipse.ui.IMemento;
  18 import org.eclipse.ui.IWorkbenchPage;
  19 import org.eclipse.ui.IWorkbenchPart;
  20 import org.eclipse.ui.IWorkbenchWindow;
  21 import org.eclipse.ui.editors.text.EditorsUI;
  22 import org.eclipse.ui.handlers.HandlerUtil;
  23 import org.springframework.security.authentication.BadCredentialsException;
  24 import org.springframework.security.authentication.LockedException;
  25 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
  26 import org.springframework.security.core.Authentication;
  27 import org.springframework.security.core.context.SecurityContextHolder;
  28
  29 import eu.etaxonomy.cdm.api.conversation.ConversationHolder;
  30 import eu.etaxonomy.cdm.api.conversation.IConversationEnabled;
  31 import eu.etaxonomy.cdm.model.common.User;
  32 import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;
  33 import eu.etaxonomy.taxeditor.model.IContextListener;
  34
  35 /**
  36  * <p>LoginManager class.</p>
  37  *
  38  * @author n.hoffmann
  39  * @created 03.07.2009
  40  * @version 1.0
  41  */
  42 public class LoginManager extends Observable implements IConversationEnabled, IContextListener{
  43
  44         private ConversationHolder conversation;
  45
  46         public LoginManager(){
  47                 CdmStore.getContextManager().addContextListener(this);
  48         }
  49
  50         /**
  51          * <p>authenticate</p>
  52          *
  53          * @param token a {@link org.springframework.security.authentication.UsernamePasswordAuthenticationToken} object.
  54          */
  55         public boolean authenticate(String username, String password){
  56
  57                 // close all open editors
  58                 if(!StoreUtil.closeAll()){
  59                         return false;
  60                 }
  61
  62
  63                 try{
  64                         getConversationHolder().bind();
  65
  66                         SecurityContextHolder.clearContext();
  67
  68                         UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);
  69                         Authentication authentication = CdmStore.getAuthenticationManager().authenticate(token);
  70
  71                         SecurityContextHolder.getContext().setAuthentication(authentication);
  72
  73                         this.setChanged();
  74                         this.notifyObservers();
  75                         return true;
  76                 }
  77                 catch(BadCredentialsException e){
  78                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Bad Credentials.");
  79                 }
  80                 catch(LockedException e){
  81                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Account is locked.");
  82                 }
  83                 catch(IllegalArgumentException e){
  84                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Username and/or Password empty.");
  85                 }
  86                 return false;
  87         }
  88
  89         /**
  90          * <p>getAuthenticatedUser</p>
  91          *
  92          * @return a {@link eu.etaxonomy.cdm.model.common.User} object.
  93          */
  94         public User getAuthenticatedUser(){
  95                 Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
  96
  97                 if(authentication != null
  98                                 && authentication.getPrincipal() != null
  99                                 && authentication.getPrincipal() instanceof User){
 100                         return (User)authentication.getPrincipal();
 101                 }
 102                 return null;
 103         }
 104
 105         public void logoutAll(){
 106                 SecurityContextHolder.clearContext();
 107                 notifyObservers();
 108         }
 109
 110         /* (non-Javadoc)
 111          * @see eu.etaxonomy.cdm.persistence.hibernate.ICdmPostDataChangeObserver#update(eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap)
 112          */
 113         @Override
 114         public void update(CdmDataChangeMap arg) {}
 115
 116         /* (non-Javadoc)
 117          * @see eu.etaxonomy.cdm.api.conversation.IConversationEnabled#getConversationHolder()
 118          */
 119         @Override
 120         public ConversationHolder getConversationHolder() {
 121                 if(conversation == null){
 122                         conversation = CdmStore.createConversation();
 123                 }
 124                 return conversation;
 125         }
 126
 127         /**
 128          * Whether the current user has the role admin
 129          *
 130          * @return
 131          */
 132         public boolean isAdmin() {
 133                 // FIXME until we have rights implemented properly we do this
 134                 // by a simple string check. This has to change
 135
 136                 return "admin".equals(getAuthenticatedUser().getUsername());
 137         }
 138
 139         @Override
 140         public void contextAboutToStop(IMemento memento, IProgressMonitor monitor) {
 141
 142         }
 143
 144         @Override
 145         public void contextStop(IMemento memento, IProgressMonitor monitor) {
 146
 147         }
 148
 149         @Override
 150         public void contextStart(IMemento memento, IProgressMonitor monitor){
 151                 conversation = CdmStore.createConversation();
 152         }
 153
 154         @Override
 155         public void contextRefresh(IProgressMonitor monitor) {
 156                 conversation = CdmStore.createConversation();
 157         }
 158
 159         @Override
 160         public void workbenchShutdown(IMemento memento, IProgressMonitor monitor) {
 161
 162         }
 163 }