package org.argeo.cms.internal.kernel;
+import static javax.jcr.Property.JCR_DESCRIPTION;
+import static javax.jcr.Property.JCR_TITLE;
+import static org.argeo.cms.CmsTypes.CMS_IMAGE;
+
import java.io.IOException;
+import java.io.PrintWriter;
+import java.security.PrivilegedExceptionAction;
import java.security.cert.X509Certificate;
import java.util.Enumeration;
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.Repository;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.security.auth.Subject;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.argeo.cms.CmsException;
+import org.argeo.cms.util.CmsUtils;
import org.argeo.jcr.ArgeoJcrConstants;
+import org.argeo.jcr.JcrUtils;
import org.eclipse.equinox.http.servlet.ExtendedHttpService;
/**
// private final DoSFilter dosFilter;
// private final QoSFilter qosFilter;
- NodeHttp(ExtendedHttpService httpService) {
+ private Repository repository;
+
+ NodeHttp(ExtendedHttpService httpService, NodeRepository node) {
+ this.repository = node;
// rootFilter = new RootFilter();
// dosFilter = new CustomDosFilter();
// qosFilter = new QoSFilter();
try {
- httpService.registerServlet("/!", new LinkServlet(), null, null);
- // httpService.registerFilter("/", rootFilter, null, null);
+ httpService.registerServlet("/!", new LinkServlet(repository),
+ null, null);
} catch (Exception e) {
throw new CmsException("Cannot register filters", e);
}
public void destroy() {
}
- class LinkServlet extends HttpServlet {
+ static class LinkServlet extends HttpServlet {
private static final long serialVersionUID = 3749990143146845708L;
+ private final Repository repository;
+
+ public LinkServlet(Repository repository) {
+ this.repository = repository;
+ }
@Override
protected void service(HttpServletRequest request,
isCompatibleBrowser = true;
}
- if (isBot)
+ if (isBot) {
log.warn("# BOT " + request.getHeader("User-Agent"));
+ canonicalAnswer(request, response, path);
+ return;
+ }
+
if (isCompatibleBrowser && log.isTraceEnabled())
log.trace("# BWS " + request.getHeader("User-Agent"));
- // if (isCompatibleBrowser) {// redirect
- response.setHeader("Location", "/#" + path);
+ redirectTo(response, "/#" + path);
+ }
+
+ private void redirectTo(HttpServletResponse response, String location) {
+ response.setHeader("Location", location);
response.setStatus(HttpServletResponse.SC_FOUND);
- // }
+ }
+
+ // private boolean canonicalAnswerNeededBy(HttpServletRequest request) {
+ // String userAgent = request.getHeader("User-Agent").toLowerCase();
+ // return userAgent.startsWith("facebookexternalhit/");
+ // }
+
+ /** For bots which don't understand RWT. */
+ private void canonicalAnswer(HttpServletRequest request,
+ HttpServletResponse response, String path) {
+ Session session = null;
+ try {
+ PrintWriter writer = response.getWriter();
+ session = Subject.doAs(KernelUtils.anonymousLogin(),
+ new PrivilegedExceptionAction<Session>() {
+
+ @Override
+ public Session run() throws Exception {
+ return repository.login();
+ }
+
+ });
+ Node node = session.getNode(path);
+ String title = node.hasProperty(JCR_TITLE) ? node.getProperty(
+ JCR_TITLE).getString() : node.getName();
+ String desc = node.hasProperty(JCR_DESCRIPTION) ? node
+ .getProperty(JCR_DESCRIPTION).getString() : null;
+ String url = CmsUtils.getCanonicalUrl(node, request);
+ String imgUrl = null;
+ for (NodeIterator it = node.getNodes(); it.hasNext();) {
+ Node child = it.nextNode();
+ if (child.isNodeType(CMS_IMAGE))
+ imgUrl = CmsUtils.getDataUrl(child, request);
+ }
+ StringBuilder buf = new StringBuilder();
+ buf.append("<html>");
+ buf.append("<head>");
+ writeMeta(buf, "og:title", title);
+ writeMeta(buf, "og:type", "website");
+ writeMeta(buf, "og:url", url);
+ if (desc != null)
+ writeMeta(buf, "og:description", desc);
+ if (imgUrl != null)
+ writeMeta(buf, "og:image", imgUrl);
+ buf.append("</head>");
+ buf.append("<body>");
+ buf.append(
+ "<p><b>!! This page is meant for indexing robots, not for real people,"
+ + " visit <a href='/#").append(path)
+ .append("'>").append(title)
+ .append("</a> instead.</b></p>");
+ writeCanonical(buf, node);
+ buf.append("</body>");
+ buf.append("</html>");
+ writer.print(buf.toString());
+ writer.flush();
+ } catch (Exception e) {
+ throw new CmsException("Cannot write canonical answer", e);
+ } finally {
+ JcrUtils.logoutQuietly(session);
+ }
+ }
+
+ private void writeMeta(StringBuilder buf, String tag, String value) {
+ buf.append("<meta property='").append(tag).append("' content='")
+ .append(value).append("'/>");
+ }
+
+ private void writeCanonical(StringBuilder buf, Node node)
+ throws RepositoryException {
+ buf.append("<div>");
+ if (node.hasProperty(JCR_TITLE))
+ buf.append("<p>")
+ .append(node.getProperty(JCR_TITLE).getString())
+ .append("</p>");
+ if (node.hasProperty(JCR_DESCRIPTION))
+ buf.append("<p>")
+ .append(node.getProperty(JCR_DESCRIPTION).getString())
+ .append("</p>");
+ NodeIterator children = node.getNodes();
+ while (children.hasNext()) {
+ writeCanonical(buf, children.nextNode());
+ }
+ buf.append("</div>");
}
}
projects / lgpl / argeo-commons.git / commitdiff