org.argeo.cms.ui/src/org/argeo/cms/widgets/auth/CmsLogin.java

   1 package org.argeo.cms.widgets.auth;
   2
   3 import static org.argeo.cms.CmsMsg.password;
   4 import static org.argeo.cms.CmsMsg.username;
   5 import static org.argeo.cms.auth.AuthConstants.LOGIN_CONTEXT_ANONYMOUS;
   6 import static org.argeo.cms.auth.AuthConstants.LOGIN_CONTEXT_USER;
   7
   8 import java.io.IOException;
   9 import java.util.List;
  10 import java.util.Locale;
  11
  12 import javax.security.auth.Subject;
  13 import javax.security.auth.callback.Callback;
  14 import javax.security.auth.callback.CallbackHandler;
  15 import javax.security.auth.callback.LanguageCallback;
  16 import javax.security.auth.callback.NameCallback;
  17 import javax.security.auth.callback.PasswordCallback;
  18 import javax.security.auth.callback.UnsupportedCallbackException;
  19 import javax.security.auth.login.FailedLoginException;
  20 import javax.security.auth.login.LoginContext;
  21 import javax.security.auth.login.LoginException;
  22
  23 import org.apache.commons.logging.Log;
  24 import org.apache.commons.logging.LogFactory;
  25 import org.argeo.cms.CmsMsg;
  26 import org.argeo.cms.auth.CurrentUser;
  27 import org.argeo.cms.auth.HttpRequestCallback;
  28 import org.argeo.cms.i18n.LocaleUtils;
  29 import org.argeo.cms.ui.CmsStyles;
  30 import org.argeo.cms.ui.CmsView;
  31 import org.argeo.cms.ui.internal.Activator;
  32 import org.argeo.cms.util.CmsUtils;
  33 import org.eclipse.rap.rwt.RWT;
  34 import org.eclipse.swt.SWT;
  35 import org.eclipse.swt.events.MouseAdapter;
  36 import org.eclipse.swt.events.MouseEvent;
  37 import org.eclipse.swt.events.SelectionAdapter;
  38 import org.eclipse.swt.events.SelectionEvent;
  39 import org.eclipse.swt.events.SelectionListener;
  40 import org.eclipse.swt.events.TraverseEvent;
  41 import org.eclipse.swt.events.TraverseListener;
  42 import org.eclipse.swt.layout.GridData;
  43 import org.eclipse.swt.layout.GridLayout;
  44 import org.eclipse.swt.widgets.Button;
  45 import org.eclipse.swt.widgets.Composite;
  46 import org.eclipse.swt.widgets.Control;
  47 import org.eclipse.swt.widgets.Label;
  48 import org.eclipse.swt.widgets.Shell;
  49 import org.eclipse.swt.widgets.Text;
  50
  51 public class CmsLogin implements CmsStyles, CallbackHandler {
  52         private final static Log log = LogFactory.getLog(CmsLogin.class);
  53
  54         private Composite parent;
  55         private Text usernameT, passwordT;
  56         private Composite credentialsBlock;
  57         private final SelectionListener loginSelectionListener;
  58
  59         private final Locale defaultLocale;
  60         private LocaleChoice localeChoice = null;
  61
  62         private final CmsView cmsView;
  63
  64         public CmsLogin(CmsView cmsView) {
  65                 this.cmsView = cmsView;
  66                 defaultLocale = Activator.getNodeState().getDefaultLocale();
  67                 List<Locale> locales = Activator.getNodeState().getLocales();
  68                 if (locales != null)
  69                         localeChoice = new LocaleChoice(locales, defaultLocale);
  70                 loginSelectionListener = new SelectionListener() {
  71                         private static final long serialVersionUID = -8832133363830973578L;
  72
  73                         @Override
  74                         public void widgetSelected(SelectionEvent e) {
  75                                 login();
  76                         }
  77
  78                         @Override
  79                         public void widgetDefaultSelected(SelectionEvent e) {
  80                         }
  81                 };
  82         }
  83
  84         protected boolean isAnonymous() {
  85                 return CurrentUser.isAnonymous(cmsView.getSubject());
  86         }
  87
  88         public final void createUi(Composite parent) {
  89                 this.parent = parent;
  90                 createContents(parent);
  91         }
  92
  93         protected void createContents(Composite parent) {
  94                 defaultCreateContents(parent);
  95         }
  96
  97         public final void defaultCreateContents(Composite parent) {
  98                 parent.setLayout(CmsUtils.noSpaceGridLayout());
  99                 Composite credentialsBlock = createCredentialsBlock(parent);
 100                 if (parent instanceof Shell) {
 101                         credentialsBlock.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, true, true));
 102                 }
 103         }
 104
 105         public final Composite createCredentialsBlock(Composite parent) {
 106                 if (isAnonymous()) {
 107                         return anonymousUi(parent);
 108                 } else {
 109                         return userUi(parent);
 110                 }
 111         }
 112
 113         protected Composite getCredentialsBlock() {
 114                 return credentialsBlock;
 115         }
 116
 117         protected Composite userUi(Composite parent) {
 118                 Locale locale = localeChoice == null ? this.defaultLocale : localeChoice.getSelectedLocale();
 119                 credentialsBlock = new Composite(parent, SWT.NONE);
 120                 credentialsBlock.setLayout(new GridLayout());
 121                 credentialsBlock.setLayoutData(CmsUtils.fillAll());
 122
 123                 specificUserUi(credentialsBlock);
 124
 125                 Label l = new Label(credentialsBlock, SWT.NONE);
 126                 l.setData(RWT.CUSTOM_VARIANT, CMS_USER_MENU_ITEM);
 127                 l.setText(CmsMsg.logout.lead(locale));
 128                 GridData lData = CmsUtils.fillWidth();
 129                 lData.widthHint = 120;
 130                 l.setLayoutData(lData);
 131
 132                 l.addMouseListener(new MouseAdapter() {
 133                         private static final long serialVersionUID = 6444395812777413116L;
 134
 135                         public void mouseDown(MouseEvent e) {
 136                                 logout();
 137                         }
 138                 });
 139                 return credentialsBlock;
 140         }
 141
 142         /** To be overridden */
 143         protected void specificUserUi(Composite parent) {
 144
 145         }
 146
 147         protected Composite anonymousUi(Composite parent) {
 148                 Locale locale = localeChoice == null ? this.defaultLocale : localeChoice.getSelectedLocale();
 149                 // We need a composite for the traversal
 150                 credentialsBlock = new Composite(parent, SWT.NONE);
 151                 credentialsBlock.setLayout(new GridLayout());
 152                 credentialsBlock.setLayoutData(CmsUtils.fillAll());
 153
 154                 Integer textWidth = 120;
 155                 parent.setData(RWT.CUSTOM_VARIANT, CMS_USER_MENU);
 156
 157                 // new Label(this, SWT.NONE).setText(CmsMsg.username.lead());
 158                 usernameT = new Text(credentialsBlock, SWT.BORDER);
 159                 usernameT.setMessage(username.lead(locale));
 160                 usernameT.setData(RWT.CUSTOM_VARIANT, CMS_LOGIN_DIALOG_USERNAME);
 161                 GridData gd = CmsUtils.fillWidth();
 162                 gd.widthHint = textWidth;
 163                 usernameT.setLayoutData(gd);
 164
 165                 // new Label(this, SWT.NONE).setText(CmsMsg.password.lead());
 166                 passwordT = new Text(credentialsBlock, SWT.BORDER | SWT.PASSWORD);
 167                 passwordT.setMessage(password.lead(locale));
 168                 passwordT.setData(RWT.CUSTOM_VARIANT, CMS_LOGIN_DIALOG_PASSWORD);
 169                 gd = CmsUtils.fillWidth();
 170                 gd.widthHint = textWidth;
 171                 passwordT.setLayoutData(gd);
 172
 173                 TraverseListener tl = new TraverseListener() {
 174                         private static final long serialVersionUID = -1158892811534971856L;
 175
 176                         public void keyTraversed(TraverseEvent e) {
 177                                 if (e.detail == SWT.TRAVERSE_RETURN)
 178                                         login();
 179                         }
 180                 };
 181                 credentialsBlock.addTraverseListener(tl);
 182                 usernameT.addTraverseListener(tl);
 183                 passwordT.addTraverseListener(tl);
 184                 parent.setTabList(new Control[] { credentialsBlock });
 185                 credentialsBlock.setTabList(new Control[] { usernameT, passwordT });
 186                 // credentialsBlock.setFocus();
 187
 188                 extendsCredentialsBlock(credentialsBlock, locale, loginSelectionListener);
 189                 if (localeChoice != null)
 190                         createLocalesBlock(credentialsBlock);
 191                 return credentialsBlock;
 192         }
 193
 194         /**
 195          * To be overridden in order to provide custome login button and other
 196          * links.
 197          */
 198         protected void extendsCredentialsBlock(Composite credentialsBlock, Locale selectedLocale,
 199                         SelectionListener loginSelectionListener) {
 200
 201         }
 202
 203         protected void updateLocale(Locale selectedLocale) {
 204                 // save already entered values
 205                 String usernameStr = usernameT.getText();
 206                 char[] pwd = passwordT.getTextChars();
 207
 208                 for (Control child : parent.getChildren())
 209                         child.dispose();
 210                 createContents(parent);
 211                 if (parent.getParent() != null)
 212                         parent.getParent().layout();
 213                 else
 214                         parent.layout();
 215                 usernameT.setText(usernameStr);
 216                 passwordT.setTextChars(pwd);
 217         }
 218
 219         protected Composite createLocalesBlock(final Composite parent) {
 220                 Composite c = new Composite(parent, SWT.NONE);
 221                 c.setLayout(CmsUtils.noSpaceGridLayout());
 222                 c.setLayoutData(CmsUtils.fillAll());
 223
 224                 SelectionListener selectionListener = new SelectionAdapter() {
 225                         private static final long serialVersionUID = 4891637813567806762L;
 226
 227                         public void widgetSelected(SelectionEvent event) {
 228                                 Button button = (Button) event.widget;
 229                                 if (button.getSelection()) {
 230                                         localeChoice.setSelectedIndex((Integer) event.widget.getData());
 231                                         updateLocale(localeChoice.getSelectedLocale());
 232                                 }
 233                         };
 234                 };
 235
 236                 List<Locale> locales = localeChoice.getLocales();
 237                 for (Integer i = 0; i < locales.size(); i++) {
 238                         Locale locale = locales.get(i);
 239                         Button button = new Button(c, SWT.RADIO);
 240                         button.setData(i);
 241                         button.setText(LocaleUtils.lead(locale.getDisplayName(locale), locale) + " (" + locale + ")");
 242                         // button.addListener(SWT.Selection, listener);
 243                         button.addSelectionListener(selectionListener);
 244                         if (i == localeChoice.getSelectedIndex())
 245                                 button.setSelection(true);
 246                 }
 247                 return c;
 248         }
 249
 250         protected boolean login() {
 251                 Subject subject = cmsView.getSubject();
 252                 LoginContext loginContext;
 253                 try {
 254                         //
 255                         // LOGIN
 256                         //
 257                         new LoginContext(LOGIN_CONTEXT_ANONYMOUS, subject).logout();
 258                         loginContext = new LoginContext(LOGIN_CONTEXT_USER, subject, this);
 259                         loginContext.login();
 260                 } catch (FailedLoginException e) {
 261                         log.warn(e.getMessage());
 262                         try {
 263                                 Thread.sleep(3000);
 264                         } catch (InterruptedException e2) {
 265                                 // silent
 266                         }
 267                         // ErrorFeedback.show("Login failed", e);
 268                         return false;
 269                 } catch (LoginException e) {
 270                         log.error("Cannot login", e);
 271                         return false;
 272                 }
 273                 cmsView.authChange(loginContext);
 274                 return true;
 275         }
 276
 277         protected void logout() {
 278                 cmsView.logout();
 279                 cmsView.navigateTo("~");
 280         }
 281
 282         @Override
 283         public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
 284                 for (Callback callback : callbacks) {
 285                         if (callback instanceof NameCallback)
 286                                 ((NameCallback) callback).setName(usernameT.getText());
 287                         else if (callback instanceof PasswordCallback)
 288                                 ((PasswordCallback) callback).setPassword(passwordT.getTextChars());
 289                         else if (callback instanceof HttpRequestCallback)
 290                                 ((HttpRequestCallback) callback).setRequest(RWT.getRequest());
 291                         else if (callback instanceof LanguageCallback && localeChoice != null)
 292                                 ((LanguageCallback) callback).setLocale(localeChoice.getSelectedLocale());
 293                 }
 294         }
 295
 296 }