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 import java.util.UUID;
   5
   6 import javax.security.auth.Subject;
   7 import javax.security.auth.login.LoginContext;
   8 import javax.security.auth.login.LoginException;
   9
  10 import org.apache.commons.logging.Log;
  11 import org.apache.commons.logging.LogFactory;
  12 import org.argeo.api.NodeConstants;
  13 import org.argeo.cms.CmsException;
  14 import org.argeo.cms.auth.CurrentUser;
  15 import org.argeo.cms.ui.CmsImageManager;
  16 import org.argeo.cms.ui.CmsView;
  17 import org.argeo.cms.ui.UxContext;
  18 import org.argeo.cms.ui.dialogs.CmsFeedback;
  19 import org.argeo.cms.ui.util.SimpleImageManager;
  20 import org.argeo.cms.ui.util.SimpleUxContext;
  21 import org.argeo.cms.ui.widgets.auth.CmsLoginShell;
  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         private String uid;
  46
  47         @PostContextCreate
  48         boolean login(final IEventBroker eventBroker) {
  49                 uid = UUID.randomUUID().toString();
  50                 browserNavigation = RWT.getClient().getService(BrowserNavigation.class);
  51                 if (browserNavigation != null)
  52                         browserNavigation.addBrowserNavigationListener(new BrowserNavigationListener() {
  53                                 private static final long serialVersionUID = -3668136623771902865L;
  54
  55                                 @Override
  56                                 public void navigated(BrowserNavigationEvent event) {
  57                                         state = event.getState();
  58                                         if (uxContext != null)// is logged in
  59                                                 stateChanged();
  60                                 }
  61                         });
  62
  63                 Subject subject = Subject.getSubject(AccessController.getContext());
  64                 Display display = Display.getCurrent();
  65 //              UiContext.setData(CmsView.KEY, this);
  66                 CmsLoginShell loginShell = new CmsLoginShell(this);
  67                 CmsView.registerCmsView(loginShell.getShell(), this);
  68                 loginShell.setSubject(subject);
  69                 try {
  70                         // try pre-auth
  71                         loginContext = new LoginContext(NodeConstants.LOGIN_CONTEXT_USER, subject, loginShell);
  72                         loginContext.login();
  73                 } catch (LoginException e) {
  74                         loginShell.createUi();
  75                         loginShell.open();
  76
  77                         while (!loginShell.getShell().isDisposed()) {
  78                                 if (!display.readAndDispatch())
  79                                         display.sleep();
  80                         }
  81                 }
  82                 if (CurrentUser.getUsername(getSubject()) == null)
  83                         return false;
  84                 uxContext = new SimpleUxContext();
  85                 imageManager = new SimpleImageManager();
  86
  87                 eventBroker.subscribe(UIEvents.UILifeCycle.APP_STARTUP_COMPLETE, new EventHandler() {
  88                         @Override
  89                         public void handleEvent(Event event) {
  90                                 startupComplete();
  91                                 eventBroker.unsubscribe(this);
  92                         }
  93                 });
  94
  95                 // lcs.changeApplicationLocale(Locale.FRENCH);
  96                 return true;
  97         }
  98
  99         @PreSave
 100         void destroy() {
 101                 // logout();
 102         }
 103
 104         @Override
 105         public UxContext getUxContext() {
 106                 return uxContext;
 107         }
 108
 109         @Override
 110         public void navigateTo(String state) {
 111                 browserNavigation.pushState(state, state);
 112         }
 113
 114         @Override
 115         public void authChange(LoginContext loginContext) {
 116                 if (loginContext == null)
 117                         throw new CmsException("Login context cannot be null");
 118                 // logout previous login context
 119                 // if (this.loginContext != null)
 120                 // try {
 121                 // this.loginContext.logout();
 122                 // } catch (LoginException e1) {
 123                 // System.err.println("Could not log out: " + e1);
 124                 // }
 125                 this.loginContext = loginContext;
 126         }
 127
 128         @Override
 129         public void logout() {
 130                 if (loginContext == null)
 131                         throw new CmsException("Login context should not be null");
 132                 try {
 133                         CurrentUser.logoutCmsSession(loginContext.getSubject());
 134                         loginContext.logout();
 135                 } catch (LoginException e) {
 136                         throw new CmsException("Cannot log out", e);
 137                 }
 138         }
 139
 140         @Override
 141         public void exception(Throwable e) {
 142                 String msg = "Unexpected exception in Eclipse 4 RAP";
 143                 log.error(msg, e);
 144                 CmsFeedback.show(msg, e);
 145         }
 146
 147         @Override
 148         public CmsImageManager getImageManager() {
 149                 return imageManager;
 150         }
 151
 152         protected Subject getSubject() {
 153                 return loginContext.getSubject();
 154         }
 155
 156         @Override
 157         public boolean isAnonymous() {
 158                 return CurrentUser.isAnonymous(getSubject());
 159         }
 160
 161         @Override
 162         public String getUid() {
 163                 return uid;
 164         }
 165
 166         // CALLBACKS
 167         protected void startupComplete() {
 168         }
 169
 170         protected void stateChanged() {
 171
 172         }
 173
 174         // GETTERS
 175         protected BrowserNavigation getBrowserNavigation() {
 176                 return browserNavigation;
 177         }
 178
 179         protected String getState() {
 180                 return state;
 181         }
 182
 183 }