1 /*
   2  * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import com.sun.tools.attach.VirtualMachine;
  25 import com.sun.tools.attach.AttachNotSupportedException;
  26 import java.io.File;
  27 import jdk.test.lib.thread.ProcessThread;
  28 import jdk.test.lib.process.OutputAnalyzer;
  29 import jdk.test.lib.process.ProcessTools;
  30 
  31 /*
  32  * @test
  33  * @bug 6173612 6273707 6277253 6335921 6348630 6342019 6381757
  34  * @summary Basic unit tests for the VM attach mechanism. Unit test for Attach
  35  * API - this checks that a SecurityException is thrown as expected.
  36  *
  37  * @library /lib/testlibrary
  38  * @library /test/lib
  39  * @modules jdk.attach
  40  *          jdk.jartool/sun.tools.jar
  41  *
  42  * @run build jdk.testlibrary.* Application
  43  * @run main PermissionTest
  44  */
  45 public class PermissionTest {
  46 
  47     /*
  48      * The actual test is in the nested class TestMain.
  49      * The responsibility of this class is to:
  50      * 1. Start the Application class in a separate process.
  51      * 2. Find the pid and shutdown port of the running Application.
  52      * 3. Run the tests in TstMain that will attach to the Application.
  53      * 4. Shut down the Application.
  54      */
  55     public static void main(String args[]) throws Throwable {
  56         ProcessThread processThread = null;
  57         try {
  58             processThread = RunnerUtil.startApplication();
  59             runTests(processThread.getPid());
  60         } catch (Throwable t) {
  61             System.out.println("TestPermission got unexpected exception: " + t);
  62             t.printStackTrace();
  63             throw t;
  64         } finally {
  65             // Make sure the Application process is stopped.
  66             RunnerUtil.stopApplication(processThread);
  67         }
  68     }
  69 
  70     /**
  71      * Runs the actual test the nested class TestMain.
  72      * The test is run in a separate process because we need to add to the classpath.
  73      */
  74     private static void runTests(long pid) throws Throwable {
  75         final String sep = File.separator;
  76 
  77         String classpath =
  78             System.getProperty("test.class.path", "");
  79         String testSrc = System.getProperty("test.src", "") + sep;
  80 
  81         // Use a policy that will NOT allow attach. Test will verify exception.
  82         String[] args = {
  83             "-classpath",
  84             classpath,
  85             "-Djava.security.manager",
  86             String.format("-Djava.security.policy=%sjava.policy.deny", testSrc),
  87             "PermissionTest$TestMain",
  88             Long.toString(pid),
  89             "true" };
  90         OutputAnalyzer output = ProcessTools.executeTestJvm(args);
  91         output.shouldHaveExitValue(0);
  92 
  93         // Use a policy that will allow attach.
  94         args = new String[] {
  95             "-classpath",
  96             classpath,
  97             "-Djava.security.manager",
  98             String.format("-Djava.security.policy=%sjava.policy.allow", testSrc),
  99             "PermissionTest$TestMain",
 100             Long.toString(pid),
 101             "false" };
 102         output = ProcessTools.executeTestJvm(args);
 103         output.shouldHaveExitValue(0);
 104     }
 105 
 106     /**
 107      * This is the actual test code. It will attach to the Application and verify
 108      * that we get a SecurityException when that is expected.
 109      */
 110     public static class TestMain {
 111         public static void main(String args[]) throws Exception {
 112             SecurityManager sm = System.getSecurityManager();
 113             if (sm == null) {
 114                 throw new RuntimeException("Test configuration error - no security manager set");
 115             }
 116 
 117             String pid = args[0];
 118             boolean shouldFail = Boolean.parseBoolean(args[1]);
 119 
 120             try {
 121                 VirtualMachine.attach(pid).detach();
 122                 if (shouldFail) {
 123                     throw new RuntimeException("SecurityException should be thrown");
 124                 }
 125                 System.out.println(" - attached to target VM as expected.");
 126             } catch (Exception x) {
 127                 // AttachNotSupportedException thrown when no providers can be loaded
 128                 if (shouldFail && ((x instanceof AttachNotSupportedException) ||
 129                     (x instanceof SecurityException))) {
 130                     System.out.println(" - exception thrown as expected.");
 131                 } else {
 132                     throw x;
 133                 }
 134             }
 135         }
 136     }
 137 }