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/*
* Copyright (c) 2005, 2015, 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 java.net.Socket;
import com.sun.jdi.Bootstrap;
import com.sun.jdi.VirtualMachine;
import com.sun.jdi.event.*;
import com.sun.jdi.connect.Connector;
import com.sun.jdi.connect.AttachingConnector;
import com.sun.jdi.connect.Connector.Argument;
import java.util.Map;
import java.util.List;
import java.util.Iterator;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import jdk.testlibrary.Utils;
import jdk.testlibrary.ProcessTools;
/* @test
* @bug 6306165 6432567
* @summary Check that a bad handshake doesn't cause a debuggee to abort
* @library /lib/testlibrary
*
* @modules java.management
* jdk.jdi
* @build jdk.testlibrary.* VMConnection BadHandshakeTest Exit0
* @run driver BadHandshakeTest
*/
public class BadHandshakeTest {
/*
* Find a connector by name
*/
private static Connector findConnector(String name) {
List<Connector> connectors = Bootstrap.virtualMachineManager().allConnectors();
Iterator<Connector> iter = connectors.iterator();
while (iter.hasNext()) {
Connector connector = (Connector)iter.next();
if (connector.name().equals(name)) {
return connector;
}
}
return null;
}
/*
* Launch a server debuggee with the given address
*/
private static LaunchResult launch(String address, String class_name) throws Exception {
String[] args = VMConnection.insertDebuggeeVMOptions(new String[] {
"-agentlib:jdwp=transport=dt_socket" +
",server=y" + ",suspend=y" + ",address=" + address,
class_name
});
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args);
final AtomicBoolean success = new AtomicBoolean();
final AtomicBoolean bindFailed = new AtomicBoolean();
Process p = ProcessTools.startProcess(
class_name,
pb,
(line) -> {
// 'Listening for transport dt_socket at address: xxxxx'
// indicates the debuggee is ready to accept connections
if (line.contains("Listening for transport dt_socket at address:")) {
success.set(true);
return true;
}
// 'Address already in use' indicates
// the debuggee has failed to start due to busy port.
if (line.contains("Address already in use")) {
bindFailed.set(true);
return true;
}
return false;
},
Integer.MAX_VALUE,
TimeUnit.MILLISECONDS
);
return new LaunchResult(success.get() ? p : null,
bindFailed.get());
}
/*
* - pick a TCP port
* - Launch a server debuggee: server=y,suspend=y,address=${port}
* - run it to VM death
* - verify we saw no error
*/
public static void main(String args[]) throws Exception {
// Launch the server debuggee
int port = 0;
Process process = null;
while (process == null) {
port = Utils.getFreePort();
String address = String.valueOf(port);
LaunchResult launchResult = launch(address, "Exit0");
process = launchResult.getProcess();
if (launchResult.isBindFailed()) {
System.out.println("Port " + port + " already in use. Trying to restart debuggee with a new one...");
Thread.sleep(100);
} else if (process == null ) {
throw new RuntimeException("Unable to start debugee");
}
}
// Connect to the debuggee and handshake with garbage
Socket s = new Socket("localhost", port);
s.getOutputStream().write("Here's a poke in the eye".getBytes("UTF-8"));
s.close();
// Re-connect and to a partial handshake - don't disconnect
s = new Socket("localhost", port);
s.getOutputStream().write("JDWP-".getBytes("UTF-8"));
// Attach to server debuggee and resume it so it can exit
AttachingConnector conn = (AttachingConnector)findConnector("com.sun.jdi.SocketAttach");
Map<String, Argument> conn_args = conn.defaultArguments();
Connector.IntegerArgument port_arg =
(Connector.IntegerArgument)conn_args.get("port");
port_arg.setValue(port);
VirtualMachine vm = conn.attach(conn_args);
// The first event is always a VMStartEvent, and it is always in
// an EventSet by itself. Wait for it.
EventSet evtSet = vm.eventQueue().remove();
for (Event event: evtSet) {
if (event instanceof VMStartEvent) {
break;
}
throw new RuntimeException("Test failed - debuggee did not start properly");
}
vm.eventRequestManager().deleteAllBreakpoints();
vm.resume();
process.waitFor();
}
private static class LaunchResult {
private final Process p;
private final boolean bindFailed;
public LaunchResult(Process p, boolean bindFailed) {
this.p = p;
this.bindFailed = bindFailed;
}
public Process getProcess() {
return p;
}
public boolean isBindFailed() {
return bindFailed;
}
}
}
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