org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/CmsLoginLifecycle.java

   1 package org.argeo.cms.e4.rap;
   2
   3 import java.security.AccessController;
   4
   5 import javax.security.auth.Subject;
   6 import javax.security.auth.login.LoginContext;
   7 import javax.security.auth.login.LoginException;
   8
   9 import org.apache.commons.logging.Log;
  10 import org.apache.commons.logging.LogFactory;
  11 import org.argeo.cms.CmsException;
  12 import org.argeo.cms.auth.CurrentUser;
  13 import org.argeo.cms.ui.CmsImageManager;
  14 import org.argeo.cms.ui.CmsView;
  15 import org.argeo.cms.ui.UxContext;
  16 import org.argeo.cms.ui.dialogs.CmsFeedback;
  17 import org.argeo.cms.util.SimpleImageManager;
  18 import org.argeo.cms.util.SimpleUxContext;
  19 import org.argeo.cms.widgets.auth.CmsLoginShell;
  20 import org.argeo.eclipse.ui.specific.UiContext;
  21 import org.argeo.node.NodeConstants;
  22 import org.eclipse.e4.core.services.events.IEventBroker;
  23 import org.eclipse.e4.ui.workbench.UIEvents;
  24 import org.eclipse.e4.ui.workbench.lifecycle.PostContextCreate;
  25 import org.eclipse.e4.ui.workbench.lifecycle.PreSave;
  26 import org.eclipse.rap.rwt.RWT;
  27 import org.eclipse.rap.rwt.client.service.BrowserNavigation;
  28 import org.eclipse.rap.rwt.client.service.BrowserNavigationEvent;
  29 import org.eclipse.rap.rwt.client.service.BrowserNavigationListener;
  30 import org.eclipse.swt.widgets.Display;
  31 import org.osgi.service.event.Event;
  32 import org.osgi.service.event.EventHandler;
  33
  34 @SuppressWarnings("restriction")
  35 public class CmsLoginLifecycle implements CmsView {
  36         private final static Log log = LogFactory.getLog(CmsLoginLifecycle.class);
  37
  38         private UxContext uxContext;
  39         private CmsImageManager imageManager;
  40
  41         private LoginContext loginContext;
  42         private BrowserNavigation browserNavigation;
  43
  44         private String state = null;
  45
  46         @PostContextCreate
  47         boolean login(final IEventBroker eventBroker) {
  48                 browserNavigation = RWT.getClient().getService(BrowserNavigation.class);
  49                 if (browserNavigation != null)
  50                         browserNavigation.addBrowserNavigationListener(new BrowserNavigationListener() {
  51                                 private static final long serialVersionUID = -3668136623771902865L;
  52
  53                                 @Override
  54                                 public void navigated(BrowserNavigationEvent event) {
  55                                         state = event.getState();
  56                                         if (uxContext != null)// is logged in
  57                                                 stateChanged();
  58                                 }
  59                         });
  60
  61                 Subject subject = Subject.getSubject(AccessController.getContext());
  62                 Display display = Display.getCurrent();
  63                 UiContext.setData(CmsView.KEY, this);
  64                 CmsLoginShell loginShell = new CmsLoginShell(this);
  65                 loginShell.setSubject(subject);
  66                 try {
  67                         // try pre-auth
  68                         loginContext = new LoginContext(NodeConstants.LOGIN_CONTEXT_USER, subject, loginShell);
  69                         loginContext.login();
  70                 } catch (LoginException e) {
  71                         loginShell.createUi();
  72                         loginShell.open();
  73
  74                         while (!loginShell.getShell().isDisposed()) {
  75                                 if (!display.readAndDispatch())
  76                                         display.sleep();
  77                         }
  78                 }
  79                 if (CurrentUser.getUsername(getSubject()) == null)
  80                         return false;
  81                 uxContext = new SimpleUxContext();
  82                 imageManager = new SimpleImageManager();
  83
  84                 eventBroker.subscribe(UIEvents.UILifeCycle.APP_STARTUP_COMPLETE, new EventHandler() {
  85                         @Override
  86                         public void handleEvent(Event event) {
  87                                 startupComplete();
  88                                 eventBroker.unsubscribe(this);
  89                         }
  90                 });
  91
  92                 // lcs.changeApplicationLocale(Locale.FRENCH);
  93                 return true;
  94         }
  95
  96         @PreSave
  97         void destroy() {
  98                 // logout();
  99         }
 100
 101         @Override
 102         public UxContext getUxContext() {
 103                 return uxContext;
 104         }
 105
 106         @Override
 107         public void navigateTo(String state) {
 108                 browserNavigation.pushState(state, state);
 109         }
 110
 111         @Override
 112         public void authChange(LoginContext loginContext) {
 113                 if (loginContext == null)
 114                         throw new CmsException("Login context cannot be null");
 115                 // logout previous login context
 116                 // if (this.loginContext != null)
 117                 // try {
 118                 // this.loginContext.logout();
 119                 // } catch (LoginException e1) {
 120                 // System.err.println("Could not log out: " + e1);
 121                 // }
 122                 this.loginContext = loginContext;
 123         }
 124
 125         @Override
 126         public void logout() {
 127                 if (loginContext == null)
 128                         throw new CmsException("Login context should not be null");
 129                 try {
 130                         CurrentUser.logoutCmsSession(loginContext.getSubject());
 131                         loginContext.logout();
 132                 } catch (LoginException e) {
 133                         throw new CmsException("Cannot log out", e);
 134                 }
 135         }
 136
 137         @Override
 138         public void exception(Throwable e) {
 139                 String msg = "Unexpected exception in Eclipse 4 RAP";
 140                 log.error(msg, e);
 141                 CmsFeedback.show(msg, e);
 142         }
 143
 144         @Override
 145         public CmsImageManager getImageManager() {
 146                 return imageManager;
 147         }
 148
 149         protected Subject getSubject() {
 150                 return loginContext.getSubject();
 151         }
 152
 153         @Override
 154         public boolean isAnonymous() {
 155                 return CurrentUser.isAnonymous(getSubject());
 156         }
 157
 158         // CALLBACKS
 159         protected void startupComplete() {
 160         }
 161
 162         protected void stateChanged() {
 163
 164         }
 165
 166         // GETTERS
 167         protected BrowserNavigation getBrowserNavigation() {
 168                 return browserNavigation;
 169         }
 170
 171         protected String getState() {
 172                 return state;
 173         }
 174
 175 }