rap/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.argeo.api.cms.CmsAuth;
  11 import org.argeo.api.cms.CmsImageManager;
  12 import org.argeo.api.cms.CmsView;
  13 import org.argeo.api.cms.CmsLog;
  14 import org.argeo.api.cms.UxContext;
  15 import org.argeo.cms.auth.CurrentUser;
  16 import org.argeo.cms.swt.CmsSwtUtils;
  17 import org.argeo.cms.swt.SimpleSwtUxContext;
  18 import org.argeo.cms.swt.auth.CmsLoginShell;
  19 import org.argeo.cms.swt.dialogs.CmsFeedback;
  20 import org.argeo.cms.ui.util.SimpleImageManager;
  21 import org.eclipse.e4.core.services.events.IEventBroker;
  22 import org.eclipse.e4.ui.workbench.UIEvents;
  23 import org.eclipse.e4.ui.workbench.lifecycle.PostContextCreate;
  24 import org.eclipse.e4.ui.workbench.lifecycle.PreSave;
  25 import org.eclipse.rap.rwt.RWT;
  26 import org.eclipse.rap.rwt.client.service.BrowserNavigation;
  27 import org.eclipse.rap.rwt.client.service.BrowserNavigationEvent;
  28 import org.eclipse.rap.rwt.client.service.BrowserNavigationListener;
  29 import org.eclipse.swt.widgets.Display;
  30 import org.osgi.service.event.Event;
  31 import org.osgi.service.event.EventHandler;
  32
  33 @SuppressWarnings("restriction")
  34 public class CmsLoginLifecycle implements CmsView {
  35         private final static CmsLog log = CmsLog.getLog(CmsLoginLifecycle.class);
  36
  37         private UxContext uxContext;
  38         private CmsImageManager imageManager;
  39
  40         private LoginContext loginContext;
  41         private BrowserNavigation browserNavigation;
  42
  43         private String state = null;
  44         private String uid;
  45
  46         @PostContextCreate
  47         boolean login(final IEventBroker eventBroker) {
  48                 uid = UUID.randomUUID().toString();
  49                 browserNavigation = RWT.getClient().getService(BrowserNavigation.class);
  50                 if (browserNavigation != null)
  51                         browserNavigation.addBrowserNavigationListener(new BrowserNavigationListener() {
  52                                 private static final long serialVersionUID = -3668136623771902865L;
  53
  54                                 @Override
  55                                 public void navigated(BrowserNavigationEvent event) {
  56                                         state = event.getState();
  57                                         if (uxContext != null)// is logged in
  58                                                 stateChanged();
  59                                 }
  60                         });
  61
  62                 Subject subject = Subject.getSubject(AccessController.getContext());
  63                 Display display = Display.getCurrent();
  64 //              UiContext.setData(CmsView.KEY, this);
  65                 CmsLoginShell loginShell = new CmsLoginShell(this);
  66                 CmsSwtUtils.registerCmsView(loginShell.getShell(), this);
  67                 loginShell.setSubject(subject);
  68                 try {
  69                         // try pre-auth
  70                         loginContext = new LoginContext(CmsAuth.LOGIN_CONTEXT_USER, subject, loginShell);
  71                         loginContext.login();
  72                 } catch (LoginException e) {
  73                         loginShell.createUi();
  74                         loginShell.open();
  75
  76                         while (!loginShell.getShell().isDisposed()) {
  77                                 if (!display.readAndDispatch())
  78                                         display.sleep();
  79                         }
  80                 }
  81                 if (CurrentUser.getUsername(getSubject()) == null)
  82                         return false;
  83                 uxContext = new SimpleSwtUxContext();
  84                 imageManager = new SimpleImageManager();
  85
  86                 eventBroker.subscribe(UIEvents.UILifeCycle.APP_STARTUP_COMPLETE, new EventHandler() {
  87                         @Override
  88                         public void handleEvent(Event event) {
  89                                 startupComplete();
  90                                 eventBroker.unsubscribe(this);
  91                         }
  92                 });
  93
  94                 // lcs.changeApplicationLocale(Locale.FRENCH);
  95                 return true;
  96         }
  97
  98         @PreSave
  99         void destroy() {
 100                 // logout();
 101         }
 102
 103         @Override
 104         public UxContext getUxContext() {
 105                 return uxContext;
 106         }
 107
 108         @Override
 109         public void navigateTo(String state) {
 110                 browserNavigation.pushState(state, state);
 111         }
 112
 113         @Override
 114         public void authChange(LoginContext loginContext) {
 115                 if (loginContext == null)
 116                         throw new IllegalArgumentException("Login context cannot be null");
 117                 // logout previous login context
 118                 // if (this.loginContext != null)
 119                 // try {
 120                 // this.loginContext.logout();
 121                 // } catch (LoginException e1) {
 122                 // System.err.println("Could not log out: " + e1);
 123                 // }
 124                 this.loginContext = loginContext;
 125         }
 126
 127         @Override
 128         public void logout() {
 129                 if (loginContext == null)
 130                         throw new IllegalStateException("Login context should not be null");
 131                 try {
 132                         CurrentUser.logoutCmsSession(loginContext.getSubject());
 133                         loginContext.logout();
 134                 } catch (LoginException e) {
 135                         throw new IllegalStateException("Cannot log out", e);
 136                 }
 137         }
 138
 139         @Override
 140         public void exception(Throwable e) {
 141                 String msg = "Unexpected exception in Eclipse 4 RAP";
 142                 log.error(msg, e);
 143                 CmsFeedback.show(msg, e);
 144         }
 145
 146         @Override
 147         public CmsImageManager getImageManager() {
 148                 return imageManager;
 149         }
 150
 151         protected Subject getSubject() {
 152                 return loginContext.getSubject();
 153         }
 154
 155         @Override
 156         public boolean isAnonymous() {
 157                 return CurrentUser.isAnonymous(getSubject());
 158         }
 159
 160         @Override
 161         public String getUid() {
 162                 return uid;
 163         }
 164
 165         // CALLBACKS
 166         protected void startupComplete() {
 167         }
 168
 169         protected void stateChanged() {
 170
 171         }
 172
 173         // GETTERS
 174         protected BrowserNavigation getBrowserNavigation() {
 175                 return browserNavigation;
 176         }
 177
 178         protected String getState() {
 179                 return state;
 180         }
 181
 182 }