AbstractCmsEntryPoint.java

   1 package org.argeo.cms.web;
   2
   3 import static org.argeo.util.naming.SharedSecret.X_SHARED_SECRET;
   4
   5 import java.io.IOException;
   6 import java.security.PrivilegedAction;
   7 import java.util.HashMap;
   8 import java.util.Map;
   9
  10 import javax.jcr.Node;
  11 import javax.jcr.PathNotFoundException;
  12 import javax.jcr.Property;
  13 import javax.jcr.Repository;
  14 import javax.jcr.RepositoryException;
  15 import javax.jcr.Session;
  16 import javax.jcr.nodetype.NodeType;
  17 import javax.security.auth.Subject;
  18 import javax.security.auth.callback.Callback;
  19 import javax.security.auth.callback.UnsupportedCallbackException;
  20 import javax.security.auth.login.LoginContext;
  21 import javax.security.auth.login.LoginException;
  22 import javax.servlet.http.HttpServletRequest;
  23
  24 import org.argeo.api.cms.CmsView;
  25 import org.argeo.api.cms.CmsLog;
  26 import org.argeo.api.cms.CmsAuth;
  27 import org.argeo.cms.CmsException;
  28 import org.argeo.cms.auth.CurrentUser;
  29 import org.argeo.cms.auth.RemoteAuthCallback;
  30 import org.argeo.cms.auth.RemoteAuthCallbackHandler;
  31 import org.argeo.cms.servlet.ServletHttpRequest;
  32 import org.argeo.cms.servlet.ServletHttpResponse;
  33 import org.argeo.cms.swt.CmsStyles;
  34 import org.argeo.cms.swt.CmsSwtUtils;
  35 import org.argeo.eclipse.ui.specific.UiContext;
  36 import org.argeo.jcr.JcrUtils;
  37 import org.argeo.util.naming.AuthPassword;
  38 import org.argeo.util.naming.SharedSecret;
  39 import org.eclipse.rap.rwt.RWT;
  40 import org.eclipse.rap.rwt.application.AbstractEntryPoint;
  41 import org.eclipse.rap.rwt.client.WebClient;
  42 import org.eclipse.rap.rwt.client.service.BrowserNavigation;
  43 import org.eclipse.rap.rwt.client.service.BrowserNavigationEvent;
  44 import org.eclipse.rap.rwt.client.service.BrowserNavigationListener;
  45 import org.eclipse.rap.rwt.client.service.JavaScriptExecutor;
  46 import org.eclipse.swt.widgets.Composite;
  47 import org.eclipse.swt.widgets.Display;
  48 import org.eclipse.swt.widgets.Shell;
  49
  50 /** Manages history and navigation */
  51 @Deprecated
  52 public abstract class AbstractCmsEntryPoint extends AbstractEntryPoint implements CmsView {
  53         private static final long serialVersionUID = 906558779562569784L;
  54
  55         private final CmsLog log = CmsLog.getLog(AbstractCmsEntryPoint.class);
  56
  57         // private final Subject subject;
  58         private LoginContext loginContext;
  59
  60         private final Repository repository;
  61         private final String workspace;
  62         private final String defaultPath;
  63         private final Map<String, String> factoryProperties;
  64
  65         // Current state
  66         private Session session;
  67         private Node node;
  68         private String nodePath;// useful when changing auth
  69         private String state;
  70         private Throwable exception;
  71
  72         // Client services
  73         private final JavaScriptExecutor jsExecutor;
  74         private final BrowserNavigation browserNavigation;
  75
  76         public AbstractCmsEntryPoint(Repository repository, String workspace, String defaultPath,
  77                         Map<String, String> factoryProperties) {
  78                 this.repository = repository;
  79                 this.workspace = workspace;
  80                 this.defaultPath = defaultPath;
  81                 this.factoryProperties = new HashMap<String, String>(factoryProperties);
  82                 // subject = new Subject();
  83
  84                 // Initial login
  85                 LoginContext lc;
  86                 try {
  87                         lc = new LoginContext(CmsAuth.LOGIN_CONTEXT_USER,
  88                                         new RemoteAuthCallbackHandler(new ServletHttpRequest(UiContext.getHttpRequest()),
  89                                                         new ServletHttpResponse(UiContext.getHttpResponse())));
  90                         lc.login();
  91                 } catch (LoginException e) {
  92                         try {
  93                                 lc = new LoginContext(CmsAuth.LOGIN_CONTEXT_ANONYMOUS);
  94                                 lc.login();
  95                         } catch (LoginException e1) {
  96                                 throw new CmsException("Cannot log in as anonymous", e1);
  97                         }
  98                 }
  99                 authChange(lc);
 100
 101                 jsExecutor = RWT.getClient().getService(JavaScriptExecutor.class);
 102                 browserNavigation = RWT.getClient().getService(BrowserNavigation.class);
 103                 if (browserNavigation != null)
 104                         browserNavigation.addBrowserNavigationListener(new CmsNavigationListener());
 105         }
 106
 107         @Override
 108         protected Shell createShell(Display display) {
 109                 Shell shell = super.createShell(display);
 110                 shell.setData(RWT.CUSTOM_VARIANT, CmsStyles.CMS_SHELL);
 111                 display.disposeExec(new Runnable() {
 112
 113                         @Override
 114                         public void run() {
 115                                 if (log.isTraceEnabled())
 116                                         log.trace("Logging out " + session);
 117                                 JcrUtils.logoutQuietly(session);
 118                         }
 119                 });
 120                 return shell;
 121         }
 122
 123         @Override
 124         protected final void createContents(final Composite parent) {
 125                 // UiContext.setData(CmsView.KEY, this);
 126                 CmsSwtUtils.registerCmsView(parent.getShell(), this);
 127                 Subject.doAs(getSubject(), new PrivilegedAction<Void>() {
 128                         @Override
 129                         public Void run() {
 130                                 try {
 131                                         initUi(parent);
 132                                 } catch (Exception e) {
 133                                         throw new CmsException("Cannot create entrypoint contents", e);
 134                                 }
 135                                 return null;
 136                         }
 137                 });
 138         }
 139
 140         /** Create UI */
 141         protected abstract void initUi(Composite parent);
 142
 143         /** Recreate UI after navigation or auth change */
 144         protected abstract void refresh();
 145
 146         /**
 147          * The node to return when no node was found (for authenticated users and
 148          * anonymous)
 149          */
 150 //      private Node getDefaultNode(Session session) throws RepositoryException {
 151 //              if (!session.hasPermission(defaultPath, "read")) {
 152 //                      String userId = session.getUserID();
 153 //                      if (userId.equals(NodeConstants.ROLE_ANONYMOUS))
 154 //                              // TODO throw a special exception
 155 //                              throw new CmsException("Login required");
 156 //                      else
 157 //                              throw new CmsException("Unauthorized");
 158 //              }
 159 //              return session.getNode(defaultPath);
 160 //      }
 161
 162         protected String getBaseTitle() {
 163                 return factoryProperties.get(WebClient.PAGE_TITLE);
 164         }
 165
 166         public void navigateTo(String state) {
 167                 exception = null;
 168                 String title = setState(state);
 169                 doRefresh();
 170                 if (browserNavigation != null)
 171                         browserNavigation.pushState(state, title);
 172         }
 173
 174         // @Override
 175         // public synchronized Subject getSubject() {
 176         // return subject;
 177         // }
 178
 179         // @Override
 180         // public LoginContext getLoginContext() {
 181         // return loginContext;
 182         // }
 183         protected Subject getSubject() {
 184                 return loginContext.getSubject();
 185         }
 186
 187         @Override
 188         public boolean isAnonymous() {
 189                 return CurrentUser.isAnonymous(getSubject());
 190         }
 191
 192         @Override
 193         public synchronized void logout() {
 194                 if (loginContext == null)
 195                         throw new CmsException("Login context should not be null");
 196                 try {
 197                         CurrentUser.logoutCmsSession(loginContext.getSubject());
 198                         loginContext.logout();
 199                         LoginContext anonymousLc = new LoginContext(CmsAuth.LOGIN_CONTEXT_ANONYMOUS);
 200                         anonymousLc.login();
 201                         authChange(anonymousLc);
 202                 } catch (LoginException e) {
 203                         log.error("Cannot logout", e);
 204                 }
 205         }
 206
 207         @Override
 208         public synchronized void authChange(LoginContext lc) {
 209                 if (lc == null)
 210                         throw new CmsException("Login context cannot be null");
 211                 // logout previous login context
 212                 if (this.loginContext != null)
 213                         try {
 214                                 this.loginContext.logout();
 215                         } catch (LoginException e1) {
 216                                 log.warn("Could not log out: " + e1);
 217                         }
 218                 this.loginContext = lc;
 219                 Subject.doAs(getSubject(), new PrivilegedAction<Void>() {
 220
 221                         @Override
 222                         public Void run() {
 223                                 try {
 224                                         JcrUtils.logoutQuietly(session);
 225                                         session = repository.login(workspace);
 226                                         if (nodePath != null)
 227                                                 try {
 228                                                         node = session.getNode(nodePath);
 229                                                 } catch (PathNotFoundException e) {
 230                                                         navigateTo("~");
 231                                                 }
 232
 233                                         // refresh UI
 234                                         doRefresh();
 235                                 } catch (RepositoryException e) {
 236                                         throw new CmsException("Cannot perform auth change", e);
 237                                 }
 238                                 return null;
 239                         }
 240
 241                 });
 242         }
 243
 244         @Override
 245         public void exception(final Throwable e) {
 246                 AbstractCmsEntryPoint.this.exception = e;
 247                 log.error("Unexpected exception in CMS", e);
 248                 doRefresh();
 249         }
 250
 251         protected synchronized void doRefresh() {
 252                 Subject.doAs(getSubject(), new PrivilegedAction<Void>() {
 253                         @Override
 254                         public Void run() {
 255                                 refresh();
 256                                 return null;
 257                         }
 258                 });
 259         }
 260
 261         /** Sets the state of the entry point and retrieve the related JCR node. */
 262         protected synchronized String setState(String newState) {
 263                 String previousState = this.state;
 264
 265                 String newNodePath = null;
 266                 String prefix = null;
 267                 this.state = newState;
 268                 if (newState.equals("~"))
 269                         this.state = "";
 270
 271                 try {
 272                         int firstSlash = state.indexOf('/');
 273                         if (firstSlash == 0) {
 274                                 newNodePath = state;
 275                                 prefix = "";
 276                         } else if (firstSlash > 0) {
 277                                 prefix = state.substring(0, firstSlash);
 278                                 newNodePath = state.substring(firstSlash);
 279                         } else {
 280                                 newNodePath = defaultPath;
 281                                 prefix = state;
 282
 283                         }
 284
 285                         // auth
 286                         int colonIndex = prefix.indexOf('$');
 287                         if (colonIndex > 0) {
 288                                 SharedSecret token = new SharedSecret(new AuthPassword(X_SHARED_SECRET + '$' + prefix)) {
 289
 290                                         @Override
 291                                         public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
 292                                                 super.handle(callbacks);
 293                                                 // handle HTTP context
 294                                                 for (Callback callback : callbacks) {
 295                                                         if (callback instanceof RemoteAuthCallback) {
 296                                                                 ((RemoteAuthCallback) callback)
 297                                                                                 .setRequest(new ServletHttpRequest(UiContext.getHttpRequest()));
 298                                                                 ((RemoteAuthCallback) callback)
 299                                                                                 .setResponse(new ServletHttpResponse(UiContext.getHttpResponse()));
 300                                                         }
 301                                                 }
 302                                         }
 303                                 };
 304                                 LoginContext lc = new LoginContext(CmsAuth.LOGIN_CONTEXT_USER, token);
 305                                 lc.login();
 306                                 authChange(lc);// sets the node as well
 307                                 // } else {
 308                                 // // TODO check consistency
 309                                 // }
 310                         } else {
 311                                 Node newNode = null;
 312                                 if (session.nodeExists(newNodePath))
 313                                         newNode = session.getNode(newNodePath);
 314                                 else {
 315 //                                      throw new CmsException("Data " + newNodePath + " does not exist");
 316                                         newNode = null;
 317                                 }
 318                                 setNode(newNode);
 319                         }
 320                         String title = publishMetaData(getNode());
 321
 322                         if (log.isTraceEnabled())
 323                                 log.trace("node=" + newNodePath + ", state=" + state + " (prefix=" + prefix + ")");
 324
 325                         return title;
 326                 } catch (Exception e) {
 327                         log.error("Cannot set state '" + state + "'", e);
 328                         if (state.equals("") || newState.equals("~") || newState.equals(previousState))
 329                                 return "Unrecoverable exception : " + e.getClass().getSimpleName();
 330                         if (previousState.equals(""))
 331                                 previousState = "~";
 332                         navigateTo(previousState);
 333                         throw new CmsException("Unexpected issue when accessing #" + newState, e);
 334                 }
 335         }
 336
 337         private String publishMetaData(Node node) throws RepositoryException {
 338                 // Title
 339                 String title;
 340                 if (node != null && node.isNodeType(NodeType.MIX_TITLE) && node.hasProperty(Property.JCR_TITLE))
 341                         title = node.getProperty(Property.JCR_TITLE).getString() + " - " + getBaseTitle();
 342                 else
 343                         title = getBaseTitle();
 344
 345                 HttpServletRequest request = UiContext.getHttpRequest();
 346                 if (request == null)
 347                         return null;
 348
 349                 StringBuilder js = new StringBuilder();
 350                 if (title == null)
 351                         title = "";
 352                 title = title.replace("'", "\\'");// sanitize
 353                 js.append("document.title = '" + title + "';");
 354                 jsExecutor.execute(js.toString());
 355                 return title;
 356         }
 357
 358         // Simply remove some illegal character
 359         // private String clean(String stringToClean) {
 360         // return stringToClean.replaceAll("'", "").replaceAll("\\n", "")
 361         // .replaceAll("\\t", "");
 362         // }
 363
 364         protected synchronized Node getNode() {
 365                 return node;
 366         }
 367
 368         private synchronized void setNode(Node node) throws RepositoryException {
 369                 this.node = node;
 370                 this.nodePath = node == null ? null : node.getPath();
 371         }
 372
 373         protected String getState() {
 374                 return state;
 375         }
 376
 377         protected Throwable getException() {
 378                 return exception;
 379         }
 380
 381         protected void resetException() {
 382                 exception = null;
 383         }
 384
 385         protected Session getSession() {
 386                 return session;
 387         }
 388
 389         private class CmsNavigationListener implements BrowserNavigationListener {
 390                 private static final long serialVersionUID = -3591018803430389270L;
 391
 392                 @Override
 393                 public void navigated(BrowserNavigationEvent event) {
 394                         setState(event.getState());
 395                         doRefresh();
 396                 }
 397         }
 398 }