rcp/org.argeo.cms.e4.rcp/src/org/argeo/cms/e4/rcp/CmsE4Application.java

   1 package org.argeo.cms.e4.rcp;
   2
   3 import java.security.PrivilegedExceptionAction;
   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.UxContext;
  14 import org.argeo.cms.CmsException;
  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.eclipse.core.runtime.IConfigurationElement;
  20 import org.eclipse.core.runtime.IExtension;
  21 import org.eclipse.core.runtime.Platform;
  22 import org.eclipse.equinox.app.IApplication;
  23 import org.eclipse.equinox.app.IApplicationContext;
  24 import org.eclipse.swt.widgets.Display;
  25
  26 public class CmsE4Application implements IApplication, CmsView {
  27         private LoginContext loginContext;
  28         private IApplication e4Application;
  29         private UxContext uxContext;
  30         private String uid;
  31
  32         @Override
  33         public Object start(IApplicationContext context) throws Exception {
  34                 uid = UUID.randomUUID().toString();
  35                 Subject subject = new Subject();
  36                 Display display = createDisplay();
  37                 CmsLoginShell loginShell = new CmsLoginShell(this);
  38                 // TODO customize CmsLoginShell to be smaller and centered
  39                 loginShell.setSubject(subject);
  40                 try {
  41                         // try pre-auth
  42                         loginContext = new LoginContext(CmsAuth.LOGIN_CONTEXT_USER, subject, loginShell);
  43                         loginContext.login();
  44                 } catch (LoginException e) {
  45                         e.printStackTrace();
  46                         loginShell.createUi();
  47                         loginShell.open();
  48
  49                         while (!loginShell.getShell().isDisposed()) {
  50                                 if (!display.readAndDispatch())
  51                                         display.sleep();
  52                         }
  53                 }
  54                 if (CurrentUser.getUsername(getSubject()) == null)
  55                         throw new CmsException("Cannot log in");
  56
  57                 // try {
  58                 // CallbackHandler callbackHandler = new DefaultLoginDialog(
  59                 // display.getActiveShell());
  60                 // loginContext = new LoginContext(
  61                 // NodeConstants.LOGIN_CONTEXT_SINGLE_USER, subject,
  62                 // callbackHandler);
  63                 // } catch (LoginException e1) {
  64                 // throw new CmsException("Cannot initialize login context", e1);
  65                 // }
  66                 //
  67                 // // login
  68                 // try {
  69                 // loginContext.login();
  70                 // subject = loginContext.getSubject();
  71                 // } catch (LoginException e) {
  72                 // e.printStackTrace();
  73                 // display.dispose();
  74                 // try {
  75                 // Thread.sleep(2000);
  76                 // } catch (InterruptedException e1) {
  77                 // // silent
  78                 // }
  79                 // return null;
  80                 // }
  81
  82                 uxContext = new SimpleSwtUxContext();
  83                 //UiContext.setData(CmsView.KEY, this);
  84                 CmsSwtUtils.registerCmsView(loginShell.getShell(), this);
  85                 e4Application = getApplication(null);
  86                 Object res = Subject.doAs(subject, new PrivilegedExceptionAction<Object>() {
  87
  88                         @Override
  89                         public Object run() throws Exception {
  90                                 return e4Application.start(context);
  91                         }
  92
  93                 });
  94                 return res;
  95         }
  96
  97         @Override
  98         public void stop() {
  99                 if (e4Application != null)
 100                         e4Application.stop();
 101         }
 102
 103         static IApplication getApplication(String[] args) {
 104                 IExtension extension = Platform.getExtensionRegistry().getExtension(Platform.PI_RUNTIME,
 105                                 Platform.PT_APPLICATIONS, "org.eclipse.e4.ui.workbench.swt.E4Application");
 106                 try {
 107                         IConfigurationElement[] elements = extension.getConfigurationElements();
 108                         if (elements.length > 0) {
 109                                 IConfigurationElement[] runs = elements[0].getChildren("run");
 110                                 if (runs.length > 0) {
 111                                         Object runnable;
 112                                         runnable = runs[0].createExecutableExtension("class");
 113                                         if (runnable instanceof IApplication)
 114                                                 return (IApplication) runnable;
 115                                 }
 116                         }
 117                 } catch (Exception e) {
 118                         throw new IllegalStateException("Cannot find e4 application", e);
 119                 }
 120                 throw new IllegalStateException("Cannot find e4 application");
 121         }
 122
 123         public static Display createDisplay() {
 124                 Display.setAppName("Argeo CMS RCP");
 125
 126                 // create the display
 127                 Display newDisplay = Display.getCurrent();
 128                 if (newDisplay == null) {
 129                         newDisplay = new Display();
 130                 }
 131                 // Set the priority higher than normal so as to be higher
 132                 // than the JobManager.
 133                 Thread.currentThread().setPriority(Math.min(Thread.MAX_PRIORITY, Thread.NORM_PRIORITY + 1));
 134                 return newDisplay;
 135         }
 136
 137         //
 138         // CMS VIEW
 139         //
 140
 141         @Override
 142         public UxContext getUxContext() {
 143                 return uxContext;
 144         }
 145
 146         @Override
 147         public void navigateTo(String state) {
 148                 // TODO Auto-generated method stub
 149
 150         }
 151
 152         @Override
 153         public void authChange(LoginContext loginContext) {
 154                 if (loginContext == null)
 155                         throw new CmsException("Login context cannot be null");
 156                 // logout previous login context
 157                 // if (this.loginContext != null)
 158                 // try {
 159                 // this.loginContext.logout();
 160                 // } catch (LoginException e1) {
 161                 // System.err.println("Could not log out: " + e1);
 162                 // }
 163                 this.loginContext = loginContext;
 164         }
 165
 166         @Override
 167         public void logout() {
 168                 if (loginContext == null)
 169                         throw new CmsException("Login context should not bet null");
 170                 try {
 171                         CurrentUser.logoutCmsSession(loginContext.getSubject());
 172                         loginContext.logout();
 173                 } catch (LoginException e) {
 174                         throw new CmsException("Cannot log out", e);
 175                 }
 176         }
 177
 178         @Override
 179         public void exception(Throwable e) {
 180                 // TODO Auto-generated method stub
 181
 182         }
 183
 184         @Override
 185         public CmsImageManager getImageManager() {
 186                 // TODO Auto-generated method stub
 187                 return null;
 188         }
 189
 190         protected Subject getSubject() {
 191                 return loginContext.getSubject();
 192         }
 193
 194         @Override
 195         public boolean isAnonymous() {
 196                 return CurrentUser.isAnonymous(getSubject());
 197         }
 198
 199         @Override
 200         public String getUid() {
 201                 return uid;
 202         }
 203
 204
 205 }