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

   1 package org.argeo.cms.ui.widgets.auth;
   2
   3 import static org.argeo.cms.CmsMsg.password;
   4 import static org.argeo.cms.CmsMsg.username;
   5
   6 import java.io.IOException;
   7 import java.util.List;
   8 import java.util.Locale;
   9
  10 import javax.security.auth.Subject;
  11 import javax.security.auth.callback.Callback;
  12 import javax.security.auth.callback.CallbackHandler;
  13 import javax.security.auth.callback.LanguageCallback;
  14 import javax.security.auth.callback.NameCallback;
  15 import javax.security.auth.callback.PasswordCallback;
  16 import javax.security.auth.callback.UnsupportedCallbackException;
  17 import javax.security.auth.login.LoginContext;
  18 import javax.security.auth.login.LoginException;
  19
  20 import org.apache.commons.logging.Log;
  21 import org.apache.commons.logging.LogFactory;
  22 import org.argeo.api.NodeConstants;
  23 import org.argeo.api.NodeState;
  24 import org.argeo.cms.CmsMsg;
  25 import org.argeo.cms.LocaleUtils;
  26 import org.argeo.cms.auth.HttpRequestCallback;
  27 import org.argeo.cms.ui.CmsStyles;
  28 import org.argeo.cms.ui.CmsView;
  29 import org.argeo.cms.ui.internal.Activator;
  30 import org.argeo.cms.ui.util.CmsUiUtils;
  31 import org.argeo.eclipse.ui.specific.UiContext;
  32 import org.eclipse.swt.SWT;
  33 import org.eclipse.swt.events.MouseAdapter;
  34 import org.eclipse.swt.events.MouseEvent;
  35 import org.eclipse.swt.events.SelectionAdapter;
  36 import org.eclipse.swt.events.SelectionEvent;
  37 import org.eclipse.swt.events.SelectionListener;
  38 import org.eclipse.swt.events.TraverseEvent;
  39 import org.eclipse.swt.events.TraverseListener;
  40 import org.eclipse.swt.layout.GridData;
  41 import org.eclipse.swt.layout.GridLayout;
  42 import org.eclipse.swt.widgets.Button;
  43 import org.eclipse.swt.widgets.Composite;
  44 import org.eclipse.swt.widgets.Control;
  45 import org.eclipse.swt.widgets.Label;
  46 import org.eclipse.swt.widgets.Shell;
  47 import org.eclipse.swt.widgets.Text;
  48
  49 public class CmsLogin implements CmsStyles, CallbackHandler {
  50         private final static Log log = LogFactory.getLog(CmsLogin.class);
  51
  52         private Composite parent;
  53         private Text usernameT, passwordT;
  54         private Composite credentialsBlock;
  55         private final SelectionListener loginSelectionListener;
  56
  57         private final Locale defaultLocale;
  58         private LocaleChoice localeChoice = null;
  59
  60         private final CmsView cmsView;
  61
  62         // optional subject to be set explicitly
  63         private Subject subject = null;
  64
  65         public CmsLogin(CmsView cmsView) {
  66                 this.cmsView = cmsView;
  67                 NodeState nodeState = Activator.getNodeState();
  68                 if (nodeState != null) {
  69                         defaultLocale = nodeState.getDefaultLocale();
  70                         List<Locale> locales = nodeState.getLocales();
  71                         if (locales != null)
  72                                 localeChoice = new LocaleChoice(locales, defaultLocale);
  73                 } else {
  74                         defaultLocale = Locale.getDefault();
  75                 }
  76                 loginSelectionListener = new SelectionListener() {
  77                         private static final long serialVersionUID = -8832133363830973578L;
  78
  79                         @Override
  80                         public void widgetSelected(SelectionEvent e) {
  81                                 login();
  82                         }
  83
  84                         @Override
  85                         public void widgetDefaultSelected(SelectionEvent e) {
  86                         }
  87                 };
  88         }
  89
  90         protected boolean isAnonymous() {
  91                 return cmsView.isAnonymous();
  92         }
  93
  94         public final void createUi(Composite parent) {
  95                 this.parent = parent;
  96                 createContents(parent);
  97         }
  98
  99         protected void createContents(Composite parent) {
 100                 defaultCreateContents(parent);
 101         }
 102
 103         public final void defaultCreateContents(Composite parent) {
 104                 parent.setLayout(CmsUiUtils.noSpaceGridLayout());
 105                 Composite credentialsBlock = createCredentialsBlock(parent);
 106                 if (parent instanceof Shell) {
 107                         credentialsBlock.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, true, true));
 108                 }
 109         }
 110
 111         public final Composite createCredentialsBlock(Composite parent) {
 112                 if (isAnonymous()) {
 113                         return anonymousUi(parent);
 114                 } else {
 115                         return userUi(parent);
 116                 }
 117         }
 118
 119         public Composite getCredentialsBlock() {
 120                 return credentialsBlock;
 121         }
 122
 123         protected Composite userUi(Composite parent) {
 124                 Locale locale = localeChoice == null ? this.defaultLocale : localeChoice.getSelectedLocale();
 125                 credentialsBlock = new Composite(parent, SWT.NONE);
 126                 credentialsBlock.setLayout(new GridLayout());
 127                 // credentialsBlock.setLayoutData(CmsUiUtils.fillAll());
 128
 129                 specificUserUi(credentialsBlock);
 130
 131                 Label l = new Label(credentialsBlock, SWT.NONE);
 132                 CmsUiUtils.style(l, CMS_USER_MENU_ITEM);
 133                 l.setText(CmsMsg.logout.lead(locale));
 134                 GridData lData = CmsUiUtils.fillWidth();
 135                 lData.widthHint = 120;
 136                 l.setLayoutData(lData);
 137
 138                 l.addMouseListener(new MouseAdapter() {
 139                         private static final long serialVersionUID = 6444395812777413116L;
 140
 141                         public void mouseDown(MouseEvent e) {
 142                                 logout();
 143                         }
 144                 });
 145                 return credentialsBlock;
 146         }
 147
 148         /** To be overridden */
 149         protected void specificUserUi(Composite parent) {
 150
 151         }
 152
 153         protected Composite anonymousUi(Composite parent) {
 154                 Locale locale = localeChoice == null ? this.defaultLocale : localeChoice.getSelectedLocale();
 155                 // We need a composite for the traversal
 156                 credentialsBlock = new Composite(parent, SWT.NONE);
 157                 credentialsBlock.setLayout(new GridLayout());
 158                 // credentialsBlock.setLayoutData(CmsUiUtils.fillAll());
 159                 CmsUiUtils.style(credentialsBlock, CMS_LOGIN_DIALOG);
 160
 161                 Integer textWidth = 120;
 162                 if (parent instanceof Shell)
 163                         CmsUiUtils.style(parent, CMS_USER_MENU);
 164                 // new Label(this, SWT.NONE).setText(CmsMsg.username.lead());
 165                 usernameT = new Text(credentialsBlock, SWT.BORDER);
 166                 usernameT.setMessage(username.lead(locale));
 167                 CmsUiUtils.style(usernameT, CMS_LOGIN_DIALOG_USERNAME);
 168                 GridData gd = CmsUiUtils.fillWidth();
 169                 gd.widthHint = textWidth;
 170                 usernameT.setLayoutData(gd);
 171
 172                 // new Label(this, SWT.NONE).setText(CmsMsg.password.lead());
 173                 passwordT = new Text(credentialsBlock, SWT.BORDER | SWT.PASSWORD);
 174                 passwordT.setMessage(password.lead(locale));
 175                 CmsUiUtils.style(passwordT, CMS_LOGIN_DIALOG_PASSWORD);
 176                 gd = CmsUiUtils.fillWidth();
 177                 gd.widthHint = textWidth;
 178                 passwordT.setLayoutData(gd);
 179
 180                 TraverseListener tl = new TraverseListener() {
 181                         private static final long serialVersionUID = -1158892811534971856L;
 182
 183                         public void keyTraversed(TraverseEvent e) {
 184                                 if (e.detail == SWT.TRAVERSE_RETURN)
 185                                         login();
 186                         }
 187                 };
 188                 credentialsBlock.addTraverseListener(tl);
 189                 usernameT.addTraverseListener(tl);
 190                 passwordT.addTraverseListener(tl);
 191                 parent.setTabList(new Control[] { credentialsBlock });
 192                 credentialsBlock.setTabList(new Control[] { usernameT, passwordT });
 193
 194                 // Button
 195                 Button loginButton = new Button(credentialsBlock, SWT.PUSH);
 196                 loginButton.setText(CmsMsg.login.lead(locale));
 197                 loginButton.setLayoutData(CmsUiUtils.fillWidth());
 198                 loginButton.addSelectionListener(loginSelectionListener);
 199
 200                 extendsCredentialsBlock(credentialsBlock, locale, loginSelectionListener);
 201                 if (localeChoice != null)
 202                         createLocalesBlock(credentialsBlock);
 203                 return credentialsBlock;
 204         }
 205
 206         /**
 207          * To be overridden in order to provide custom login button and other links.
 208          */
 209         protected void extendsCredentialsBlock(Composite credentialsBlock, Locale selectedLocale,
 210                         SelectionListener loginSelectionListener) {
 211
 212         }
 213
 214         protected void updateLocale(Locale selectedLocale) {
 215                 // save already entered values
 216                 String usernameStr = usernameT.getText();
 217                 char[] pwd = passwordT.getTextChars();
 218
 219                 for (Control child : parent.getChildren())
 220                         child.dispose();
 221                 createContents(parent);
 222                 if (parent.getParent() != null)
 223                         parent.getParent().layout();
 224                 else
 225                         parent.layout();
 226                 usernameT.setText(usernameStr);
 227                 passwordT.setTextChars(pwd);
 228         }
 229
 230         protected Composite createLocalesBlock(final Composite parent) {
 231                 Composite c = new Composite(parent, SWT.NONE);
 232                 CmsUiUtils.style(c, CMS_USER_MENU_ITEM);
 233                 c.setLayout(CmsUiUtils.noSpaceGridLayout());
 234                 c.setLayoutData(CmsUiUtils.fillAll());
 235
 236                 SelectionListener selectionListener = new SelectionAdapter() {
 237                         private static final long serialVersionUID = 4891637813567806762L;
 238
 239                         public void widgetSelected(SelectionEvent event) {
 240                                 Button button = (Button) event.widget;
 241                                 if (button.getSelection()) {
 242                                         localeChoice.setSelectedIndex((Integer) event.widget.getData());
 243                                         updateLocale(localeChoice.getSelectedLocale());
 244                                 }
 245                         };
 246                 };
 247
 248                 List<Locale> locales = localeChoice.getLocales();
 249                 for (Integer i = 0; i < locales.size(); i++) {
 250                         Locale locale = locales.get(i);
 251                         Button button = new Button(c, SWT.RADIO);
 252                         CmsUiUtils.style(button, CMS_USER_MENU_ITEM);
 253                         button.setData(i);
 254                         button.setText(LocaleUtils.lead(locale.getDisplayName(locale), locale) + " (" + locale + ")");
 255                         // button.addListener(SWT.Selection, listener);
 256                         button.addSelectionListener(selectionListener);
 257                         if (i == localeChoice.getSelectedIndex())
 258                                 button.setSelection(true);
 259                 }
 260                 return c;
 261         }
 262
 263         protected boolean login() {
 264                 // TODO use CmsVie in order to retrieve subject?
 265                 // Subject subject = cmsView.getLoginContext().getSubject();
 266                 // LoginContext loginContext = cmsView.getLoginContext();
 267                 try {
 268                         //
 269                         // LOGIN
 270                         //
 271                         // loginContext.logout();
 272                         LoginContext loginContext;
 273                         if (subject == null)
 274                                 loginContext = new LoginContext(NodeConstants.LOGIN_CONTEXT_USER, this);
 275                         else
 276                                 loginContext = new LoginContext(NodeConstants.LOGIN_CONTEXT_USER, subject, this);
 277                         loginContext.login();
 278                         cmsView.authChange(loginContext);
 279                         return true;
 280                 } catch (LoginException e) {
 281                         if (log.isTraceEnabled())
 282                                 log.warn("Login failed: " + e.getMessage(), e);
 283                         else
 284                                 log.warn("Login failed: " + e.getMessage());
 285
 286                         try {
 287                                 Thread.sleep(3000);
 288                         } catch (InterruptedException e2) {
 289                                 // silent
 290                         }
 291                         // ErrorFeedback.show("Login failed", e);
 292                         return false;
 293                 }
 294                 // catch (LoginException e) {
 295                 // log.error("Cannot login", e);
 296                 // return false;
 297                 // }
 298         }
 299
 300         protected void logout() {
 301                 cmsView.logout();
 302                 cmsView.navigateTo("~");
 303         }
 304
 305         @Override
 306         public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
 307                 for (Callback callback : callbacks) {
 308                         if (callback instanceof NameCallback && usernameT != null)
 309                                 ((NameCallback) callback).setName(usernameT.getText());
 310                         else if (callback instanceof PasswordCallback && passwordT != null)
 311                                 ((PasswordCallback) callback).setPassword(passwordT.getTextChars());
 312                         else if (callback instanceof HttpRequestCallback) {
 313                                 ((HttpRequestCallback) callback).setRequest(UiContext.getHttpRequest());
 314                                 ((HttpRequestCallback) callback).setResponse(UiContext.getHttpResponse());
 315                         } else if (callback instanceof LanguageCallback) {
 316                                 Locale toUse = null;
 317                                 if (localeChoice != null)
 318                                         toUse = localeChoice.getSelectedLocale();
 319                                 else if (defaultLocale != null)
 320                                         toUse = defaultLocale;
 321
 322                                 if (toUse != null) {
 323                                         ((LanguageCallback) callback).setLocale(toUse);
 324                                         UiContext.setLocale(toUse);
 325                                 }
 326
 327                         }
 328                 }
 329         }
 330
 331         public void setSubject(Subject subject) {
 332                 this.subject = subject;
 333         }
 334
 335 }