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/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import com.sun.jdi.Bootstrap;
import com.sun.jdi.VirtualMachine;
import com.sun.jdi.connect.AttachingConnector;
import com.sun.jdi.connect.Connector;
import com.sun.jdi.connect.IllegalConnectorArgumentsException;
import lib.jdb.Debuggee;
import java.io.IOException;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
/*
* @test
* @bug 8184770
* @summary Tests that JDWP agent honors jdk net properties
* @library /test/lib
*
* @build HelloWorld JdwpNetProps
* @run main/othervm JdwpNetProps
*/
public class JdwpNetProps {
public static void main(String[] args) throws Exception {
InetAddress addrs[] = InetAddress.getAllByName("localhost");
InetAddress ipv4Address = null;
InetAddress ipv6Address = null;
for (int i = 0; i < addrs.length; i++) {
if (addrs[i] instanceof Inet4Address) {
ipv4Address = addrs[i];
} else if (addrs[i] instanceof Inet6Address) {
ipv6Address = addrs[i];
}
}
if (ipv4Address != null) {
new ListenTest("localhost", ipv4Address)
.preferIPv4Stack(true)
.run(TestResult.Success);
new ListenTest("localhost", ipv4Address)
.preferIPv4Stack(false)
.run(TestResult.Success);
if (ipv6Address != null) {
// - only IPv4, so connection prom IPv6 should fail
new ListenTest("localhost", ipv6Address)
.preferIPv4Stack(true)
.preferIPv6Addresses(true)
.run(TestResult.AttachFailed);
// - listen on IPv4
new ListenTest("localhost", ipv6Address)
.preferIPv6Addresses(false)
.run(TestResult.AttachFailed);
// - listen on IPv6
new ListenTest("localhost", ipv6Address)
.preferIPv6Addresses(true)
.run(TestResult.Success);
}
} else {
// IPv6-only system - expected to fail on IPv4 address
new ListenTest("localhost", ipv6Address)
.preferIPv4Stack(true)
.run(TestResult.ListenFailed);
}
}
private enum TestResult {
Success,
ListenFailed,
AttachFailed
}
private static class ListenTest {
private final String listenAddress;
private final InetAddress connectAddress;
private Boolean preferIPv4Stack;
private Boolean preferIPv6Addresses;
public ListenTest(String listenAddress, InetAddress connectAddress) {
this.listenAddress = listenAddress;
this.connectAddress = connectAddress;
}
public ListenTest preferIPv4Stack(Boolean value) {
preferIPv4Stack = value;
return this;
}
public ListenTest preferIPv6Addresses(Boolean value) {
preferIPv6Addresses = value;
return this;
}
public void run(TestResult expectedResult) throws Exception {
List<String> options = new LinkedList<>();
if (preferIPv4Stack != null) {
options.add("-Djava.net.preferIPv4Stack=" + preferIPv4Stack.toString());
}
if (preferIPv6Addresses != null) {
options.add("-Djava.net.preferIPv6Addresses=" + preferIPv6Addresses.toString());
}
log("Starting listening debuggee at " + listenAddress
+ (expectedResult == TestResult.ListenFailed ? ": expected to fail" : ""));
Exception error = null;
try (Debuggee debuggee = Debuggee.launcher("HelloWorld")
.setAddress(listenAddress + ":0")
.addOptions(options).launch()) {
log("Debuggee is listening on " + listenAddress + ":" + debuggee.getAddress());
log("Connecting from " + connectAddress.getHostAddress()
+ ", expected: " + (expectedResult == TestResult.Success ? "Success" : "Failure"));
try {
VirtualMachine vm = attach(connectAddress.getHostAddress(), debuggee.getAddress());
vm.dispose();
if (expectedResult == TestResult.Success) {
log("Attached successfully (as expected)");
} else {
error = new RuntimeException("ERROR: attached successfully");
}
} catch (Exception ex) {
if (expectedResult == TestResult.AttachFailed) {
log("Attach failed (as expected)");
} else {
error = new RuntimeException("ERROR: failed to attach", ex);
}
}
} catch (Exception ex) {
if (expectedResult == TestResult.ListenFailed) {
log("Listen failed (as expected)");
} else {
error = new RuntimeException("ERROR: listen failed", ex);
}
}
if (error != null) {
throw error;
}
}
}
private static String ATTACH_CONNECTOR = "com.sun.jdi.SocketAttach";
// cache socket attaching connector
private static AttachingConnector attachingConnector;
private static VirtualMachine attach(String address, String port) throws IOException {
if (attachingConnector == null) {
attachingConnector = (AttachingConnector)getConnector(ATTACH_CONNECTOR);
}
Map<String, Connector.Argument> args = attachingConnector.defaultArguments();
setConnectorArg(args, "hostname", address);
setConnectorArg(args, "port", port);
try {
return attachingConnector.attach(args);
} catch (IllegalConnectorArgumentsException e) {
// unexpected.. wrap in RuntimeException
throw new RuntimeException(e);
}
}
private static Connector getConnector(String name) {
List<Connector> connectors = Bootstrap.virtualMachineManager().allConnectors();
for (Iterator<Connector> iter = connectors.iterator(); iter.hasNext(); ) {
Connector connector = iter.next();
if (connector.name().equalsIgnoreCase(name)) {
return connector;
}
}
throw new IllegalArgumentException("Connector " + name + " not found");
}
private static void setConnectorArg(Map<String, Connector.Argument> args, String name, String value) {
Connector.Argument arg = args.get(name);
if (arg == null) {
throw new IllegalArgumentException("Argument " + name + " is not defined");
}
arg.setValue(value);
}
private static void log(Object o) {
System.out.println(String.valueOf(o));
}
}
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