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 import java.util.Set;
  15
  16 import org.apache.log4j.Logger;
  17 import org.eclipse.core.runtime.IProgressMonitor;
  18 import org.eclipse.ui.IMemento;
  19 import org.springframework.security.authentication.BadCredentialsException;
  20 import org.springframework.security.authentication.LockedException;
  21 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
  22 import org.springframework.security.core.Authentication;
  23 import org.springframework.security.core.GrantedAuthority;
  24 import org.springframework.security.core.context.SecurityContextHolder;
  25
  26 import eu.etaxonomy.cdm.api.conversation.ConversationHolder;
  27 import eu.etaxonomy.cdm.api.conversation.IConversationEnabled;
  28 import eu.etaxonomy.cdm.model.common.Group;
  29 import eu.etaxonomy.cdm.model.common.User;
  30 import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;
  31 import eu.etaxonomy.cdm.persistence.hibernate.permission.CdmAuthority;
  32 import eu.etaxonomy.taxeditor.model.IContextListener;
  33
  34 /**
  35  * <p>LoginManager class.</p>
  36  *
  37  * @author n.hoffmann
  38  * @created 03.07.2009
  39  * @version 1.0
  40  */
  41 public class LoginManager extends Observable implements IConversationEnabled, IContextListener{
  42
  43         public static final Logger logger = Logger.getLogger(LoginManager.class);
  44
  45         private ConversationHolder conversation;
  46
  47         public LoginManager(){
  48                 CdmStore.getContextManager().addContextListener(this);
  49         }
  50
  51         /**
  52          * <p>authenticate</p>
  53          *
  54          * @param token a {@link org.springframework.security.authentication.UsernamePasswordAuthenticationToken} object.
  55          * @return true if the login attempt was successful even if the authentication has changed or not
  56          */
  57         public boolean authenticate(String username, String password){
  58
  59                 // close all open editors
  60                 if(!StoreUtil.closeAll()){
  61                         return false;
  62                 }
  63
  64
  65                 try{
  66                         getConversationHolder().bind();
  67                         getConversationHolder().commit();
  68
  69                         SecurityContextHolder.clearContext();
  70
  71                         Authentication lastAuthentication = CdmStore.getCurrentAuthentiation();
  72
  73                         UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);
  74                         Authentication authentication = CdmStore.getAuthenticationManager().authenticate(token);
  75
  76                         User user = (User) authentication.getPrincipal();
  77                         /* circumventing problem with hibernate not refreshing the transient collection authorities in this case,
  78                          * see http://dev.e-taxonomy.eu/trac/ticket/4053 */
  79                         user.initAuthorities();
  80
  81                         if(logger.isDebugEnabled()){
  82                                 StringBuilder gaText = new StringBuilder();
  83                                 String indent = "    ";
  84                                 Set<GrantedAuthority> gaSet = user.getGrantedAuthorities();
  85                                 _logGrantedAuthotities(gaText, indent, gaSet);
  86                                 for(Group gr : user.getGroups()){
  87                                         gaText.append(indent).append("gr[").append(gr.hashCode()).append("] \"").append(gr.getName()).append("\" ").append(gr.toString()).append("\n");
  88                                         _logGrantedAuthotities(gaText, indent + indent, gr.getGrantedAuthorities());
  89                                 }
  90                                 logger.debug("User authenticated: " + user.getUsername() + "\n" + gaText.toString());
  91                         }
  92
  93                         SecurityContextHolder.getContext().setAuthentication(authentication);
  94
  95                         if(!authentication.equals(lastAuthentication)){
  96                                 this.setChanged();
  97                                 this.notifyObservers();
  98                         }
  99                         return true;
 100                 }
 101                 catch(BadCredentialsException e){
 102                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Bad Credentials.");
 103                 }
 104                 catch(LockedException e){
 105                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Account is locked.");
 106                 }
 107                 catch(IllegalArgumentException e){
 108                         StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Username and/or Password empty.");
 109                 }
 110                 return false;
 111         }
 112
 113         private void _logGrantedAuthotities(StringBuilder gaText, String indent,
 114                         Set<GrantedAuthority> gaSet) {
 115                 for(GrantedAuthority ga : gaSet){
 116                         gaText.append(indent).append("ga[").append(ga.hashCode()).append("] ").append(ga.toString()).append("\n");
 117                 }
 118         }
 119
 120         /**
 121          * <p>getAuthenticatedUser</p>
 122          *
 123          * @return a {@link eu.etaxonomy.cdm.model.common.User} object.
 124          */
 125         public User getAuthenticatedUser(){
 126                 Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
 127
 128                 if(authentication != null
 129                                 && authentication.getPrincipal() != null
 130                                 && authentication.getPrincipal() instanceof User){
 131                         return (User)authentication.getPrincipal();
 132                 }
 133                 return null;
 134         }
 135
 136         public void logoutAll(){
 137                 SecurityContextHolder.clearContext();
 138                 notifyObservers();
 139         }
 140
 141         /* (non-Javadoc)
 142          * @see eu.etaxonomy.cdm.persistence.hibernate.ICdmPostDataChangeObserver#update(eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap)
 143          */
 144         @Override
 145         public void update(CdmDataChangeMap arg) {}
 146
 147         /* (non-Javadoc)
 148          * @see eu.etaxonomy.cdm.api.conversation.IConversationEnabled#getConversationHolder()
 149          */
 150         @Override
 151         public ConversationHolder getConversationHolder() {
 152                 if(conversation == null){
 153                         conversation = CdmStore.createConversation();
 154                 }
 155                 return conversation;
 156         }
 157
 158         /**
 159          * Whether the current user has the role admin
 160          *
 161          * @return
 162          */
 163         public boolean isAdmin() {
 164                 // FIXME until we have rights implemented properly we do this
 165                 // by a simple string check. This has to change
 166
 167                 return "admin".equals(getAuthenticatedUser().getUsername());
 168         }
 169
 170         @Override
 171         public void contextAboutToStop(IMemento memento, IProgressMonitor monitor) {
 172
 173         }
 174
 175         @Override
 176         public void contextStop(IMemento memento, IProgressMonitor monitor) {
 177
 178         }
 179
 180         @Override
 181         public void contextStart(IMemento memento, IProgressMonitor monitor){
 182                 conversation = CdmStore.createConversation();
 183         }
 184
 185         @Override
 186         public void contextRefresh(IProgressMonitor monitor) {
 187                 conversation = CdmStore.createConversation();
 188         }
 189
 190         @Override
 191         public void workbenchShutdown(IMemento memento, IProgressMonitor monitor) {
 192
 193         }
 194 }