| package hudson;import jenkins.model.Jenkins;import jenkins.model.Jenkins.MasterComputer;import javax.jmdns.JmDNS;import javax.jmdns.ServiceInfo;import java.io.Closeable;import java.io.IOException;import java.net.URL;import java.util.HashMap;import java.util.Map;import java.util.concurrent.Callable;import java.util.logging.Level;import java.util.logging.Logger;/** * Registers a DNS multi-cast service-discovery support. * * @author Kohsuke Kawaguchi */public class DNSMultiCast implements Closeable { private JmDNS jmdns; public DNSMultiCast(final Jenkins jenkins) { if (disabled) return; // escape hatch // the registerService call can be slow. run these asynchronously MasterComputer.threadPoolForRemoting.submit(new Callable<Object>() { public Object call() { try { jmdns = JmDNS.create(); Map<String,String> props = new HashMap<String, String>(); String rootURL = jenkins.getRootUrl(); if (rootURL==null) return null; props.put("url", rootURL); try { props.put("version",String.valueOf(Jenkins.getVersion())); } catch (IllegalArgumentException e) { // failed to parse the version number } TcpSlaveAgentListener tal = jenkins.getTcpSlaveAgentListener(); if (tal!=null) props.put("slave-port",String.valueOf(tal.getPort())); // BUG: NVD-CWE-noinfo Insufficient Information // props.put("server-id", Util.getDigestOf(jenkins.getSecretKey())); // FIXED: props.put("server-id", jenkins.getLegacyInstanceId()); URL jenkins_url = new URL(rootURL); int jenkins_port = jenkins_url.getPort(); if (jenkins_port == -1) { jenkins_port = 80; } if (jenkins_url.getPath().length() > 0) { props.put("path", jenkins_url.getPath()); } jmdns.registerService(ServiceInfo.create("_hudson._tcp.local.","jenkins", jenkins_port,0,0,props)); // for backward compatibility jmdns.registerService(ServiceInfo.create("_jenkins._tcp.local.","jenkins", jenkins_port,0,0,props)); // Make Jenkins appear in Safari's Bonjour bookmarks jmdns.registerService(ServiceInfo.create("_http._tcp.local.","Jenkins", jenkins_port,0,0,props)); } catch (IOException e) { LOGGER.log(Level.WARNING,"Failed to advertise the service to DNS multi-cast",e); } return null; } }); } public void close() { if (jmdns!=null) {// try { jmdns.abort(); jmdns = null;// } catch (final IOException e) {// LOGGER.log(Level.WARNING,"Failed to close down JmDNS instance!",e);// } } } private static final Logger LOGGER = Logger.getLogger(DNSMultiCast.class.getName()); public static boolean disabled = Boolean.getBoolean(DNSMultiCast.class.getName()+".disabled");} |