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