1 /*
   2  * Copyright (c) 2010, 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 /* @test
  25  * @bug 6876541
  26  * @summary Test Files.walkFileTree in the presence of a security manager
  27  * @build WalkWithSecurity
  28  * @run main/othervm WalkWithSecurity grantAll.policy pass
  29  * @run main/othervm WalkWithSecurity denyAll.policy fail
  30  * @run main/othervm WalkWithSecurity grantTopOnly.policy top_only
  31  */
  32 
  33 import java.nio.file.*;
  34 import java.nio.file.attribute.BasicFileAttributes;
  35 import java.io.IOException;
  36 
  37 public class WalkWithSecurity {
  38 
  39     public static void main(String[] args) throws IOException {
  40         String policyFile = args[0];
  41         ExpectedResult expectedResult = ExpectedResult.valueOf(args[1].toUpperCase());
  42 
  43         String here = System.getProperty("user.dir");
  44         String testSrc = System.getProperty("test.src");
  45         if (testSrc == null)
  46             throw new RuntimeException("This test must be run by jtreg");
  47         Path dir = Paths.get(testSrc);
  48 
  49         // Sanity check the environment
  50         if (Files.isSameFile(Paths.get(here), dir))
  51             throw new RuntimeException("Working directory cannot be " + dir);
  52         try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {
  53             if (!stream.iterator().hasNext())
  54                 throw new RuntimeException(testSrc + " is empty");
  55         }
  56 
  57         // Install security manager with the given policy file
  58         System.setProperty("java.security.policy",
  59             dir.resolve(policyFile).toString());
  60         System.setSecurityManager(new SecurityManager());
  61 
  62         // Walk the source tree
  63         CountingVisitor visitor = new CountingVisitor();
  64         SecurityException exception = null;
  65         try {
  66             Files.walkFileTree(dir, visitor);
  67         } catch (SecurityException se) {
  68             exception = se;
  69         }
  70 
  71         // Check result
  72         switch (expectedResult) {
  73             case PASS:
  74                 if (exception != null) {
  75                     exception.printStackTrace();
  76                     throw new RuntimeException("SecurityException not expected");
  77                 }
  78                 if (visitor.count() == 0)
  79                     throw new RuntimeException("No files visited");
  80                 break;
  81             case FAIL:
  82                 if (exception == null)
  83                     throw new RuntimeException("SecurityException expected");
  84                 if (visitor.count() > 0)
  85                     throw new RuntimeException("Files were visited");
  86                 break;
  87             case TOP_ONLY:
  88                 if (exception != null) {
  89                     exception.printStackTrace();
  90                     throw new RuntimeException("SecurityException not expected");
  91                 }
  92                 if (visitor.count() == 0)
  93                     throw new RuntimeException("Starting file not visited");
  94                 if (visitor.count() > 1)
  95                     throw new RuntimeException("More than starting file visited");
  96                 break;
  97             default:
  98                 throw new RuntimeException("Should not get here");
  99         }
 100     }
 101 
 102     static enum ExpectedResult {
 103         PASS,
 104         FAIL,
 105         TOP_ONLY;
 106     }
 107 
 108     static class CountingVisitor extends SimpleFileVisitor<Path> {
 109         private int count;
 110 
 111         int count() {
 112             return count;
 113         }
 114 
 115         @Override
 116         public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
 117             System.out.println(dir);
 118             count++;
 119             return FileVisitResult.CONTINUE;
 120         }
 121 
 122         @Override
 123         public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
 124             System.out.println(file);
 125             count++;
 126             return FileVisitResult.CONTINUE;
 127         }
 128     }
 129 }