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diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/HostInfo.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/HostInfo.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.tools.ant.taskdefs;
+
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.util.Arrays;
+import java.util.Enumeration;
+import java.util.LinkedList;
+import java.util.List;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.Task;
+
+/**
+ * Sets properties to the host provided, or localhost if no information is
+ * provided. The default properties are NAME, FQDN, ADDR4, ADDR6;
+ *
+ * @since Ant 1.8
+ * @ant.task category="utility"
+ */
+
+
+public class HostInfo extends Task {
+ private static final String DEF_REM_ADDR6 = "::";
+
+ private static final String DEF_REM_ADDR4 = "0.0.0.0";
+
+ private static final String DEF_LOCAL_ADDR6 = "::1";
+
+ private static final String DEF_LOCAL_ADDR4 = "127.0.0.1";
+
+ private static final String DEF_LOCAL_NAME = "localhost";
+ private static final String DEF_DOMAIN = "localdomain";
+
+ private static final String DOMAIN = "DOMAIN";
+
+ private static final String NAME = "NAME";
+
+ private static final String ADDR4 = "ADDR4";
+
+ private static final String ADDR6 = "ADDR6";
+
+ private String prefix = "";
+
+ private String host;
+
+ private InetAddress nameAddr;
+
+ private InetAddress best6;
+
+ private InetAddress best4;
+
+ private List<InetAddress> inetAddrs;
+
+ /**
+ * Set a prefix for the properties. If the prefix does not end with a "."
+ * one is automatically added.
+ *
+ * @param aPrefix
+ * the prefix to use.
+ * @since Ant 1.8
+ */
+ public void setPrefix(String aPrefix) {
+ prefix = aPrefix;
+ if (!prefix.endsWith(".")) {
+ prefix += ".";
+ }
+ }
+
+ /**
+ * Set the host to be retrieved.
+ *
+ * @param aHost
+ * the name or the address of the host, data for the local host
+ * will be retrieved if omitted.
+ * @since Ant 1.8
+ */
+ public void setHost(String aHost) {
+ host = aHost;
+ }
+
+ /**
+ * set the properties.
+ *
+ * @throws BuildException
+ * on error.
+ */
+ public void execute() throws BuildException {
+ if (host == null || "".equals(host)) {
+ executeLocal();
+ } else {
+ executeRemote();
+ }
+ }
+
+ private void executeLocal() {
+ try {
+ inetAddrs = new LinkedList<InetAddress>();
+ Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
+ while (interfaces.hasMoreElements()) {
+ NetworkInterface currentif = interfaces.nextElement();
+ Enumeration<InetAddress> addrs = currentif.getInetAddresses();
+ while (addrs.hasMoreElements()) {
+ inetAddrs.add(addrs.nextElement());
+ }
+ }
+ selectAddresses();
+
+ if (nameAddr != null && hasHostName(nameAddr)) {
+ setDomainAndName(nameAddr.getCanonicalHostName());
+ } else {
+ setProperty(DOMAIN, DEF_DOMAIN);
+ setProperty(NAME, DEF_LOCAL_NAME);
+ }
+ if (best4 != null) {
+ setProperty(ADDR4, best4.getHostAddress());
+ } else {
+ setProperty(ADDR4, DEF_LOCAL_ADDR4);
+ }
+ if (best6 != null) {
+ setProperty(ADDR6, best6.getHostAddress());
+ } else {
+ setProperty(ADDR6, DEF_LOCAL_ADDR6);
+ }
+ } catch (Exception e) {
+ log("Error retrieving local host information", e, Project.MSG_WARN);
+ setProperty(DOMAIN, DEF_DOMAIN);
+ setProperty(NAME, DEF_LOCAL_NAME);
+ setProperty(ADDR4, DEF_LOCAL_ADDR4);
+ setProperty(ADDR6, DEF_LOCAL_ADDR6);
+ }
+ }
+
+ private boolean hasHostName(InetAddress addr) {
+ return !addr.getHostAddress().equals(addr.getCanonicalHostName());
+ }
+
+ private void selectAddresses() {
+ for (InetAddress current : inetAddrs) {
+ if (!current.isMulticastAddress()) {
+ if (current instanceof Inet4Address) {
+ best4 = selectBestAddress(best4, current);
+ } else if (current instanceof Inet6Address) {
+ best6 = selectBestAddress(best6, current);
+ }
+ }
+ }
+
+ nameAddr = selectBestAddress(best4, best6);
+ }
+
+ private InetAddress selectBestAddress(InetAddress bestSoFar,
+ InetAddress current) {
+ InetAddress best = bestSoFar;
+ if (best == null) {
+ // none selected so far, so this one is better.
+ best = current;
+ } else {
+ if (current == null || current.isLoopbackAddress()) {
+ // definitely not better than the previously selected address.
+ } else if (current.isLinkLocalAddress()) {
+ // link local considered better than loopback
+ if (best.isLoopbackAddress()) {
+ best = current;
+ }
+ } else if (current.isSiteLocalAddress()) {
+ // site local considered better than link local (and loopback)
+ // address with hostname resolved considered better than
+ // address without hostname
+ if (best.isLoopbackAddress()
+ || best.isLinkLocalAddress()
+ || (best.isSiteLocalAddress() && !hasHostName(best))) {
+ best = current;
+ }
+ } else {
+ // current is a "Global address", considered better than
+ // site local (and better than link local, loopback)
+ // address with hostname resolved considered better than
+ // address without hostname
+ if (best.isLoopbackAddress()
+ || best.isLinkLocalAddress()
+ || best.isSiteLocalAddress()
+ || !hasHostName(best)) {
+ best = current;
+ }
+ }
+ }
+ return best;
+ }
+
+ private void executeRemote() {
+ try {
+ inetAddrs = Arrays.asList(InetAddress.getAllByName(host));
+
+ selectAddresses();
+
+ if (nameAddr != null && hasHostName(nameAddr)) {
+ setDomainAndName(nameAddr.getCanonicalHostName());
+ } else {
+ setDomainAndName(host);
+ }
+ if (best4 != null) {
+ setProperty(ADDR4, best4.getHostAddress());
+ } else {
+ setProperty(ADDR4, DEF_REM_ADDR4);
+ }
+ if (best6 != null) {
+ setProperty(ADDR6, best6.getHostAddress());
+ } else {
+ setProperty(ADDR6, DEF_REM_ADDR6);
+ }
+ } catch (Exception e) {
+ log("Error retrieving remote host information for host:" + host
+ + ".", e, Project.MSG_WARN);
+ setDomainAndName(host);
+ setProperty(ADDR4, DEF_REM_ADDR4);
+ setProperty(ADDR6, DEF_REM_ADDR6);
+ }
+ }
+
+ private void setDomainAndName(String fqdn) {
+ int idx = fqdn.indexOf('.');
+ if (idx > 0) {
+ setProperty(NAME, fqdn.substring(0, idx));
+ setProperty(DOMAIN, fqdn.substring(idx+1));
+ } else {
+ setProperty(NAME, fqdn);
+ setProperty(DOMAIN, DEF_DOMAIN);
+ }
+ }
+
+ private void setProperty(String name, String value) {
+ getProject().setNewProperty(prefix + name, value);
+ }
+
+}