org.argeo.cms/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 import static org.argeo.cms.internal.kernel.Activator.getKernelHeader;
   8
   9 import java.io.IOException;
  10 import java.util.List;
  11 import java.util.Locale;
  12
  13 import javax.security.auth.Subject;
  14 import javax.security.auth.callback.Callback;
  15 import javax.security.auth.callback.CallbackHandler;
  16 import javax.security.auth.callback.LanguageCallback;
  17 import javax.security.auth.callback.NameCallback;
  18 import javax.security.auth.callback.PasswordCallback;
  19 import javax.security.auth.callback.UnsupportedCallbackException;
  20 import javax.security.auth.login.LoginContext;
  21 import javax.security.auth.login.LoginException;
  22
  23 import org.argeo.cms.CmsException;
  24 import org.argeo.cms.CmsMsg;
  25 import org.argeo.cms.CmsStyles;
  26 import org.argeo.cms.CmsView;
  27 import org.argeo.cms.auth.CurrentUser;
  28 import org.argeo.cms.auth.HttpRequestCallback;
  29 import org.argeo.cms.i18n.LocaleUtils;
  30 import org.argeo.cms.util.CmsUtils;
  31 import org.argeo.util.LocaleChoice;
  32 import org.eclipse.rap.rwt.RWT;
  33 import org.eclipse.swt.SWT;
  34 import org.eclipse.swt.events.MouseAdapter;
  35 import org.eclipse.swt.events.MouseEvent;
  36 import org.eclipse.swt.events.SelectionAdapter;
  37 import org.eclipse.swt.events.SelectionEvent;
  38 import org.eclipse.swt.events.SelectionListener;
  39 import org.eclipse.swt.events.TraverseEvent;
  40 import org.eclipse.swt.events.TraverseListener;
  41 import org.eclipse.swt.layout.GridData;
  42 import org.eclipse.swt.layout.GridLayout;
  43 import org.eclipse.swt.widgets.Button;
  44 import org.eclipse.swt.widgets.Composite;
  45 import org.eclipse.swt.widgets.Control;
  46 import org.eclipse.swt.widgets.Label;
  47 import org.eclipse.swt.widgets.Shell;
  48 import org.eclipse.swt.widgets.Text;
  49
  50 public class CmsLogin implements CmsStyles, CallbackHandler {
  51         private Composite parent;
  52         private Text usernameT, passwordT;
  53         private Composite credentialsBlock;
  54         private final SelectionListener loginSelectionListener;
  55
  56         private final Locale defaultLocale;
  57         private LocaleChoice localeChoice = null;
  58
  59         private final CmsView cmsView;
  60
  61         public CmsLogin(CmsView cmsView) {
  62                 this.cmsView = cmsView;
  63                 defaultLocale = getKernelHeader().getDefaultLocale();
  64                 List<Locale> locales = getKernelHeader().getLocales();
  65                 if (locales != null)
  66                         localeChoice = new LocaleChoice(locales, defaultLocale);
  67                 loginSelectionListener = new SelectionListener() {
  68                         private static final long serialVersionUID = -8832133363830973578L;
  69
  70                         @Override
  71                         public void widgetSelected(SelectionEvent e) {
  72                                 login();
  73                         }
  74
  75                         @Override
  76                         public void widgetDefaultSelected(SelectionEvent e) {
  77                         }
  78                 };
  79         }
  80
  81         protected boolean isAnonymous() {
  82                 return CurrentUser.isAnonymous(cmsView.getSubject());
  83         }
  84
  85         public final void createUi(Composite parent) {
  86                 this.parent = parent;
  87                 createContents(parent);
  88         }
  89
  90         protected void createContents(Composite parent) {
  91                 defaultCreateContents(parent);
  92         }
  93
  94         public final void defaultCreateContents(Composite parent) {
  95                 parent.setLayout(CmsUtils.noSpaceGridLayout());
  96                 Composite credentialsBlock = createCredentialsBlock(parent);
  97                 if (parent instanceof Shell) {
  98                         credentialsBlock.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER,
  99                                         true, true));
 100                 }
 101         }
 102
 103         public final Composite createCredentialsBlock(Composite parent) {
 104                 if (isAnonymous()) {
 105                         return anonymousUi(parent);
 106                 } else {
 107                         return userUi(parent);
 108                 }
 109         }
 110
 111         protected Composite getCredentialsBlock() {
 112                 return credentialsBlock;
 113         }
 114
 115         protected Composite userUi(Composite parent) {
 116                 Locale locale = localeChoice == null ? this.defaultLocale
 117                                 : localeChoice.getSelectedLocale();
 118                 credentialsBlock = new Composite(parent, SWT.NONE);
 119                 credentialsBlock.setLayout(new GridLayout());
 120                 credentialsBlock.setLayoutData(CmsUtils.fillAll());
 121
 122                 specificUserUi(credentialsBlock);
 123
 124                 Label l = new Label(credentialsBlock, SWT.NONE);
 125                 l.setData(RWT.CUSTOM_VARIANT, CMS_USER_MENU_ITEM);
 126                 l.setText(CmsMsg.logout.lead(locale));
 127                 GridData lData = CmsUtils.fillWidth();
 128                 lData.widthHint = 120;
 129                 l.setLayoutData(lData);
 130
 131                 l.addMouseListener(new MouseAdapter() {
 132                         private static final long serialVersionUID = 6444395812777413116L;
 133
 134                         public void mouseDown(MouseEvent e) {
 135                                 logout();
 136                         }
 137                 });
 138                 return credentialsBlock;
 139         }
 140
 141         /** To be overridden */
 142         protected void specificUserUi(Composite parent) {
 143
 144         }
 145
 146         protected Composite anonymousUi(Composite parent) {
 147                 Locale locale = localeChoice == null ? this.defaultLocale
 148                                 : 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,
 189                                 loginSelectionListener);
 190                 if (localeChoice != null)
 191                         createLocalesBlock(credentialsBlock);
 192                 return credentialsBlock;
 193         }
 194
 195         /**
 196          * To be overridden in order to provide custome login button and other
 197          * links.
 198          */
 199         protected void extendsCredentialsBlock(Composite credentialsBlock,
 200                         Locale selectedLocale, SelectionListener loginSelectionListener) {
 201
 202         }
 203
 204         protected void updateLocale(Locale selectedLocale) {
 205                 // save already entered values
 206                 String usernameStr = usernameT.getText();
 207                 char[] pwd = passwordT.getTextChars();
 208
 209                 for (Control child : parent.getChildren())
 210                         child.dispose();
 211                 createContents(parent);
 212                 if (parent.getParent() != null)
 213                         parent.getParent().layout();
 214                 else
 215                         parent.layout();
 216                 usernameT.setText(usernameStr);
 217                 passwordT.setTextChars(pwd);
 218         }
 219
 220         protected Composite createLocalesBlock(final Composite parent) {
 221                 Composite c = new Composite(parent, SWT.NONE);
 222                 c.setLayout(CmsUtils.noSpaceGridLayout());
 223                 c.setLayoutData(CmsUtils.fillAll());
 224
 225                 SelectionListener selectionListener = new SelectionAdapter() {
 226                         private static final long serialVersionUID = 4891637813567806762L;
 227
 228                         public void widgetSelected(SelectionEvent event) {
 229                                 Button button = (Button) event.widget;
 230                                 if (button.getSelection()) {
 231                                         localeChoice.setSelectedIndex((Integer) event.widget
 232                                                         .getData());
 233                                         updateLocale(localeChoice.getSelectedLocale());
 234                                 }
 235                         };
 236                 };
 237
 238                 List<Locale> locales = localeChoice.getLocales();
 239                 for (Integer i = 0; i < locales.size(); i++) {
 240                         Locale locale = locales.get(i);
 241                         Button button = new Button(c, SWT.RADIO);
 242                         button.setData(i);
 243                         button.setText(LocaleUtils.lead(locale.getDisplayName(locale),
 244                                         locale) + " (" + locale + ")");
 245                         // button.addListener(SWT.Selection, listener);
 246                         button.addSelectionListener(selectionListener);
 247                         if (i == localeChoice.getSelectedIndex())
 248                                 button.setSelection(true);
 249                 }
 250                 return c;
 251         }
 252
 253         protected void login() {
 254                 Subject subject = cmsView.getSubject();
 255                 LoginContext loginContext;
 256                 try {
 257                         //
 258                         // LOGIN
 259                         //
 260                         new LoginContext(LOGIN_CONTEXT_ANONYMOUS, subject).logout();
 261                         loginContext = new LoginContext(LOGIN_CONTEXT_USER, subject, this);
 262                         loginContext.login();
 263                 } catch (LoginException e1) {
 264                         throw new CmsException("Cannot authenticate", e1);
 265                 }
 266                 cmsView.authChange(loginContext);
 267         }
 268
 269         protected void logout() {
 270                 cmsView.logout();
 271                 cmsView.navigateTo("~");
 272         }
 273
 274         @Override
 275         public void handle(Callback[] callbacks) throws IOException,
 276                         UnsupportedCallbackException {
 277                 for (Callback callback : callbacks) {
 278                         if (callback instanceof NameCallback)
 279                                 ((NameCallback) callback).setName(usernameT.getText());
 280                         else if (callback instanceof PasswordCallback)
 281                                 ((PasswordCallback) callback).setPassword(passwordT
 282                                                 .getTextChars());
 283                         else if (callback instanceof HttpRequestCallback)
 284                                 ((HttpRequestCallback) callback).setRequest(RWT.getRequest());
 285                         else if (callback instanceof LanguageCallback
 286                                         && localeChoice != null)
 287                                 ((LanguageCallback) callback).setLocale(localeChoice
 288                                                 .getSelectedLocale());
 289                 }
 290         }
 291
 292 }