--- /dev/null
+package org.argeo.cms.ui;
+
+import java.security.PrivilegedAction;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.jcr.Node;
+import javax.jcr.PathNotFoundException;
+import javax.jcr.Property;
+import javax.jcr.Repository;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.jcr.nodetype.NodeType;
+import javax.security.auth.Subject;
+import javax.security.auth.login.CredentialNotFoundException;
+import javax.security.auth.login.LoginContext;
+import javax.security.auth.login.LoginException;
+import javax.servlet.http.HttpServletRequest;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.cms.CmsException;
+import org.argeo.cms.auth.AuthConstants;
+import org.argeo.cms.auth.HttpRequestCallbackHandler;
+import org.argeo.eclipse.ui.specific.UiContext;
+import org.argeo.jcr.JcrUtils;
+import org.argeo.node.NodeAuthenticated;
+import org.eclipse.rap.rwt.RWT;
+import org.eclipse.rap.rwt.application.AbstractEntryPoint;
+import org.eclipse.rap.rwt.client.WebClient;
+import org.eclipse.rap.rwt.client.service.BrowserNavigation;
+import org.eclipse.rap.rwt.client.service.BrowserNavigationEvent;
+import org.eclipse.rap.rwt.client.service.BrowserNavigationListener;
+import org.eclipse.rap.rwt.client.service.JavaScriptExecutor;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+
+/** Manages history and navigation */
+public abstract class AbstractCmsEntryPoint extends AbstractEntryPoint implements CmsView {
+ private final Log log = LogFactory.getLog(AbstractCmsEntryPoint.class);
+
+ private final Subject subject;
+ private LoginContext loginContext;
+
+ private final Repository repository;
+ private final String workspace;
+ private final String defaultPath;
+ private final Map<String, String> factoryProperties;
+
+ // Current state
+ private Session session;
+ private Node node;
+ private String nodePath;// useful when changing auth
+ private String state;
+ private String page;
+ private Throwable exception;
+
+ // Client services
+ private final JavaScriptExecutor jsExecutor;
+ private final BrowserNavigation browserNavigation;
+
+ public AbstractCmsEntryPoint(Repository repository, String workspace, String defaultPath,
+ Map<String, String> factoryProperties) {
+ this.repository = repository;
+ this.workspace = workspace;
+ this.defaultPath = defaultPath;
+ this.factoryProperties = new HashMap<String, String>(factoryProperties);
+ subject = new Subject();
+
+ // Initial login
+ try {
+ loginContext = new LoginContext(AuthConstants.LOGIN_CONTEXT_USER, subject,
+ new HttpRequestCallbackHandler(UiContext.getHttpRequest()));
+ loginContext.login();
+ } catch (CredentialNotFoundException e) {
+ try {
+ loginContext = new LoginContext(AuthConstants.LOGIN_CONTEXT_ANONYMOUS, subject);
+ loginContext.login();
+ } catch (LoginException e1) {
+ throw new CmsException("Cannot log as anonymous", e);
+ }
+ } catch (LoginException e) {
+ throw new CmsException("Cannot initialize subject", e);
+ }
+ authChange(loginContext);
+
+ jsExecutor = RWT.getClient().getService(JavaScriptExecutor.class);
+ browserNavigation = RWT.getClient().getService(BrowserNavigation.class);
+ if (browserNavigation != null)
+ browserNavigation.addBrowserNavigationListener(new CmsNavigationListener());
+ }
+
+ @Override
+ protected Shell createShell(Display display) {
+ Shell shell = super.createShell(display);
+ shell.setData(RWT.CUSTOM_VARIANT, CmsStyles.CMS_SHELL);
+ display.disposeExec(new Runnable() {
+
+ @Override
+ public void run() {
+ if (log.isTraceEnabled())
+ log.trace("Logging out " + session);
+ JcrUtils.logoutQuietly(session);
+ }
+ });
+ return shell;
+ }
+
+ @Override
+ protected final void createContents(final Composite parent) {
+ UiContext.setData(NodeAuthenticated.KEY, this);
+ Subject.doAs(subject, new PrivilegedAction<Void>() {
+ @Override
+ public Void run() {
+ try {
+ initUi(parent);
+ } catch (Exception e) {
+ throw new CmsException("Cannot create entrypoint contents", e);
+ }
+ return null;
+ }
+ });
+ }
+
+ /** Create UI */
+ protected abstract void initUi(Composite parent);
+
+ /** Recreate UI after navigation or auth change */
+ protected abstract void refresh();
+
+ /**
+ * The node to return when no node was found (for authenticated users and
+ * anonymous)
+ */
+ protected Node getDefaultNode(Session session) throws RepositoryException {
+ if (!session.hasPermission(defaultPath, "read")) {
+ if (session.getUserID().equals(AuthConstants.ROLE_ANONYMOUS))
+ // TODO throw a special exception
+ throw new CmsException("Login required");
+ else
+ throw new CmsException("Unauthorized");
+ }
+ return session.getNode(defaultPath);
+ }
+
+ protected String getBaseTitle() {
+ return factoryProperties.get(WebClient.PAGE_TITLE);
+ }
+
+ public void navigateTo(String state) {
+ exception = null;
+ String title = setState(state);
+ doRefresh();
+ if (browserNavigation != null)
+ browserNavigation.pushState(state, title);
+ }
+
+ @Override
+ public synchronized Subject getSubject() {
+ return subject;
+ }
+
+ @Override
+ public synchronized void logout() {
+ if (loginContext == null)
+ throw new CmsException("Login context should not be null");
+ try {
+ loginContext.logout();
+ LoginContext anonymousLc = new LoginContext(AuthConstants.LOGIN_CONTEXT_ANONYMOUS, subject);
+ anonymousLc.login();
+ authChange(anonymousLc);
+ } catch (LoginException e) {
+ throw new CmsException("Cannot logout", e);
+ }
+ }
+
+ @Override
+ public synchronized void authChange(LoginContext loginContext) {
+ if (loginContext == null)
+ throw new CmsException("Login context cannot be null");
+ this.loginContext = loginContext;
+ Subject.doAs(loginContext.getSubject(), new PrivilegedAction<Void>() {
+
+ @Override
+ public Void run() {
+ try {
+ JcrUtils.logoutQuietly(session);
+ session = repository.login(workspace);
+ if (nodePath != null)
+ try {
+ node = session.getNode(nodePath);
+ } catch (PathNotFoundException e) {
+ // logout();
+ // session = repository.login(workspace);
+ navigateTo("~");
+ // throw e;
+ }
+
+ // refresh UI
+ doRefresh();
+ } catch (RepositoryException e) {
+ throw new CmsException("Cannot perform auth change", e);
+ }
+ return null;
+ }
+
+ });
+
+ }
+
+ @Override
+ public void exception(final Throwable e) {
+ AbstractCmsEntryPoint.this.exception = e;
+ log.error("Unexpected exception in CMS", e);
+ doRefresh();
+ }
+
+ protected synchronized void doRefresh() {
+ Subject.doAs(subject, new PrivilegedAction<Void>() {
+ @Override
+ public Void run() {
+ refresh();
+ return null;
+ }
+ });
+ }
+
+ /** Sets the state of the entry point and retrieve the related JCR node. */
+ protected synchronized String setState(String newState) {
+ String previousState = this.state;
+
+ Node node = null;
+ page = null;
+ this.state = newState;
+ if (newState.equals("~"))
+ this.state = "";
+
+ try {
+ int firstSlash = state.indexOf('/');
+ if (firstSlash == 0) {
+ if (session.nodeExists(state))
+ node = session.getNode(state);
+ else
+ throw new CmsException("Data " + state + " does not exist");
+ page = "";
+ } else if (firstSlash > 0) {
+ String prefix = state.substring(0, firstSlash);
+ String path = state.substring(firstSlash);
+ if (session.nodeExists(path))
+ node = session.getNode(path);
+ else
+ throw new CmsException("Data " + path + " does not exist");
+ page = prefix;
+ } else {
+ node = getDefaultNode(session);
+ page = state;
+ }
+ setNode(node);
+ String title = publishMetaData(node);
+
+ if (log.isTraceEnabled())
+ log.trace("node=" + node + ", state=" + state + " (page=" + page + ")");
+
+ return title;
+ } catch (Exception e) {
+ log.error("Cannot set state '" + state + "'", e);
+ if (previousState.equals(""))
+ previousState = "~";
+ navigateTo(previousState);
+ throw new CmsException("Unexpected issue when accessing #" + newState, e);
+ }
+ }
+
+ private String publishMetaData(Node node) throws RepositoryException {
+ // Title
+ String title;
+ if (node.isNodeType(NodeType.MIX_TITLE) && node.hasProperty(Property.JCR_TITLE))
+ title = node.getProperty(Property.JCR_TITLE).getString() + " - " + getBaseTitle();
+ else
+ title = getBaseTitle();
+
+ HttpServletRequest request = UiContext.getHttpRequest();
+ if (request == null)
+ return null;
+
+ StringBuilder js = new StringBuilder();
+ title = title.replace("'", "\\'");// sanitize
+ js.append("document.title = '" + title + "';");
+ jsExecutor.execute(js.toString());
+ return title;
+ }
+
+ // Simply remove some illegal character
+ // private String clean(String stringToClean) {
+ // return stringToClean.replaceAll("'", "").replaceAll("\\n", "")
+ // .replaceAll("\\t", "");
+ // }
+
+ protected synchronized Node getNode() {
+ return node;
+ }
+
+ private synchronized void setNode(Node node) throws RepositoryException {
+ this.node = node;
+ this.nodePath = node == null ? null : node.getPath();
+ }
+
+ protected String getState() {
+ return state;
+ }
+
+ protected Throwable getException() {
+ return exception;
+ }
+
+ protected void resetException() {
+ exception = null;
+ }
+
+ protected Session getSession() {
+ return session;
+ }
+
+ private class CmsNavigationListener implements BrowserNavigationListener {
+ private static final long serialVersionUID = -3591018803430389270L;
+
+ @Override
+ public void navigated(BrowserNavigationEvent event) {
+ setState(event.getState());
+ refresh();
+ }
+ }
+}
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projects / lgpl / argeo-commons.git / blobdiff