org.argeo.cms/src/org/argeo/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.CurrentUser;
  17 import org.argeo.cms.auth.HttpRequestCallbackHandler;
  18 import org.argeo.cms.ui.UxContext;
  19 import org.argeo.cms.widgets.auth.CmsLogin;
  20 import org.argeo.cms.widgets.auth.CmsLoginShell;
  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
  64                 if (CurrentUser.getUsername() == null)
  65                         return -1;
  66                 uxContext = new SimpleUxContext();
  67                 return postLogin();
  68         }
  69
  70         protected Display createDisplay() {
  71                 return new Display();
  72         }
  73
  74         protected int postLogin() {
  75                 return 0;
  76         }
  77
  78         protected HttpServletRequest getRequest() {
  79                 return RWT.getRequest();
  80         }
  81
  82         protected CmsLoginShell createCmsLoginShell() {
  83                 return new CmsLoginShell(this) {
  84
  85                         @Override
  86                         public void createContents(Composite parent) {
  87                                 LoginEntryPoint.this.createLoginPage(parent, this);
  88                         }
  89
  90                         @Override
  91                         protected void extendsCredentialsBlock(Composite credentialsBlock,
  92                                         Locale selectedLocale,
  93                                         SelectionListener loginSelectionListener) {
  94                                 LoginEntryPoint.this.extendsCredentialsBlock(credentialsBlock,
  95                                                 selectedLocale, loginSelectionListener);
  96                         }
  97
  98                 };
  99         }
 100
 101         /**
 102          * To be overridden. CmsLogin#createCredentialsBlock() should be called at
 103          * some point in order to create the credentials composite. In order to use
 104          * the default layout, call CmsLogin#defaultCreateContents() but <b>not</b>
 105          * CmsLogin#createContent(), since it would lead to a stack overflow.
 106          */
 107         protected void createLoginPage(Composite parent, CmsLogin login) {
 108                 login.defaultCreateContents(parent);
 109         }
 110
 111         protected void extendsCredentialsBlock(Composite credentialsBlock,
 112                         Locale selectedLocale, SelectionListener loginSelectionListener) {
 113
 114         }
 115
 116         @Override
 117         public void navigateTo(String state) {
 118                 // TODO Auto-generated method stub
 119
 120         }
 121
 122         @Override
 123         public void authChange(LoginContext loginContext) {
 124                 this.loginContext = loginContext;
 125         }
 126
 127         @Override
 128         public void logout() {
 129                 if (loginContext == null)
 130                         throw new CmsException("Login context should not bet null");
 131                 try {
 132                         loginContext.logout();
 133                 } catch (LoginException e) {
 134                         throw new CmsException("Cannot log out", e);
 135                 }
 136         }
 137
 138         @Override
 139         public final Subject getSubject() {
 140                 return subject;
 141         }
 142
 143         @Override
 144         public void exception(Throwable e) {
 145                 // TODO Auto-generated method stub
 146
 147         }
 148
 149         @Override
 150         public CmsImageManager getImageManager() {
 151                 // TODO Auto-generated method stub
 152                 return null;
 153         }
 154
 155         @Override
 156         public UxContext getUxContext() {
 157                 return uxContext;
 158         }
 159
 160 }