util/LoginEntryPoint.java

   1 package org.argeo.cms.util;
   2
   3 import java.util.Locale;
   4
   5 import javax.security.auth.Subject;
   6 import javax.security.auth.login.CredentialNotFoundException;
   7 import javax.security.auth.login.LoginContext;
   8 import javax.security.auth.login.LoginException;
   9 import javax.servlet.http.HttpServletRequest;
  10
  11 import org.argeo.ArgeoException;
  12 import org.argeo.cms.CmsException;
  13 import org.argeo.cms.CmsImageManager;
  14 import org.argeo.cms.CmsView;
  15 import org.argeo.cms.auth.AuthConstants;
  16 import org.argeo.cms.auth.HttpRequestCallbackHandler;
  17 import org.argeo.cms.ui.UxContext;
  18 import org.argeo.cms.widgets.auth.CmsLogin;
  19 import org.argeo.cms.widgets.auth.CmsLoginShell;
  20 import org.argeo.eclipse.ui.dialogs.ErrorFeedback;
  21 import org.argeo.eclipse.ui.specific.UiContext;
  22 import org.eclipse.rap.rwt.RWT;
  23 import org.eclipse.rap.rwt.application.EntryPoint;
  24 import org.eclipse.swt.events.SelectionListener;
  25 import org.eclipse.swt.widgets.Composite;
  26 import org.eclipse.swt.widgets.Display;
  27
  28 public class LoginEntryPoint implements EntryPoint, CmsView {
  29         // private final static Log log = LogFactory.getLog(WorkbenchLogin.class);
  30         private final Subject subject = new Subject();
  31         private LoginContext loginContext;
  32         private UxContext uxContext = null;
  33
  34         @Override
  35         public int createUI() {
  36                 final Display display = createDisplay();
  37                 UiContext.setData(CmsView.KEY, this);
  38                 try {
  39                         // try pre-auth
  40                         loginContext = new LoginContext(AuthConstants.LOGIN_CONTEXT_USER,
  41                                         subject, new HttpRequestCallbackHandler(getRequest()));
  42                         loginContext.login();
  43                 } catch (CredentialNotFoundException e) {
  44                         CmsLoginShell loginShell = createCmsLoginShell();
  45                         loginShell.open();
  46                         while (!loginShell.getShell().isDisposed()) {
  47                                 try {
  48                                         if (!display.readAndDispatch())
  49                                                 display.sleep();
  50                                 } catch (Exception e1) {
  51                                         try {
  52                                                 Thread.sleep(3000);
  53                                         } catch (InterruptedException e2) {
  54                                                 // silent
  55                                         }
  56                                         ErrorFeedback.show("Login failed", e1);
  57                                         return -1;
  58                                 }
  59                         }
  60                 } catch (LoginException e) {
  61                         throw new ArgeoException("Cannot log in", e);
  62                 }
  63                 uxContext = new SimpleUxContext();
  64                 return postLogin();
  65         }
  66
  67         protected Display createDisplay() {
  68                 return new Display();
  69         }
  70
  71         protected int postLogin() {
  72                 return 0;
  73         }
  74
  75         protected HttpServletRequest getRequest() {
  76                 return RWT.getRequest();
  77         }
  78
  79         protected CmsLoginShell createCmsLoginShell() {
  80                 return new CmsLoginShell(this) {
  81
  82                         @Override
  83                         public void createContents(Composite parent) {
  84                                 LoginEntryPoint.this.createLoginPage(parent, this);
  85                         }
  86
  87                         @Override
  88                         protected void extendsCredentialsBlock(Composite credentialsBlock,
  89                                         Locale selectedLocale,
  90                                         SelectionListener loginSelectionListener) {
  91                                 LoginEntryPoint.this.extendsCredentialsBlock(credentialsBlock,
  92                                                 selectedLocale, loginSelectionListener);
  93                         }
  94
  95                 };
  96         }
  97
  98         /**
  99          * To be overridden. CmsLogin#createCredentialsBlock() should be called at
 100          * some point in order to create the credentials composite. In order to use
 101          * the default layout, call CmsLogin#defaultCreateContents() but <b>not</b>
 102          * CmsLogin#createContent(), since it would lead to a stack overflow.
 103          */
 104         protected void createLoginPage(Composite parent, CmsLogin login) {
 105                 login.defaultCreateContents(parent);
 106         }
 107
 108         protected void extendsCredentialsBlock(Composite credentialsBlock,
 109                         Locale selectedLocale, SelectionListener loginSelectionListener) {
 110
 111         }
 112
 113         @Override
 114         public void navigateTo(String state) {
 115                 // TODO Auto-generated method stub
 116
 117         }
 118
 119         @Override
 120         public void authChange(LoginContext loginContext) {
 121                 this.loginContext = loginContext;
 122         }
 123
 124         @Override
 125         public void logout() {
 126                 if (loginContext == null)
 127                         throw new CmsException("Login context should not bet null");
 128                 try {
 129                         loginContext.logout();
 130                 } catch (LoginException e) {
 131                         throw new CmsException("Cannot log out", e);
 132                 }
 133         }
 134
 135         @Override
 136         public final Subject getSubject() {
 137                 return subject;
 138         }
 139
 140         @Override
 141         public void exception(Throwable e) {
 142                 // TODO Auto-generated method stub
 143
 144         }
 145
 146         @Override
 147         public CmsImageManager getImageManager() {
 148                 // TODO Auto-generated method stub
 149                 return null;
 150         }
 151
 152         @Override
 153         public UxContext getUxContext() {
 154                 return uxContext;
 155         }
 156
 157 }