changeset 7743:f8b3811337b7

8066612: Add a test that will call getDeclaredFields() on all classes and try to set them accessible. Summary: This test use the jrt:/ file system to find the name of all classes, then loads each of them, get their declared fields, and attempt to call setAccessible. Reviewed-by: chegar, coffeys
author dfuchs
date Tue, 13 Jan 2015 18:11:54 +0000
parents 1e7d8b107fc4
children 1c3c47064b5c
files test/java/lang/Class/getDeclaredField/FieldSetAccessibleTest.java
diffstat 1 files changed, 393 insertions(+), 0 deletions(-) [+]
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/lang/Class/getDeclaredField/FieldSetAccessibleTest.java	Tue Jan 13 18:11:54 2015 +0000
@@ -0,0 +1,393 @@
+/*
+ * Copyright (c) 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.
+ */
+
+/**
+ * @test
+ * @bug 8065552
+ * @summary test that all fields returned by getDeclaredFields() can be
+ * set accessible if the right permission is granted; this test
+ * loads all the classes in the BCL, get their declared fields,
+ * and call setAccessible(false) followed by setAccessible(true);
+ *
+ * @run main/othervm -XX:PermSize=128m FieldSetAccessibleTest UNSECURE
+ * @run main/othervm -XX:PermSize=128m FieldSetAccessibleTest SECURE
+ *
+ * @author danielfuchs
+ */
+
+import java.io.File;
+import java.io.FilePermission;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.ReflectPermission;
+import java.security.CodeSource;
+import java.security.Permission;
+import java.security.PermissionCollection;
+import java.security.Permissions;
+import java.security.Policy;
+import java.security.ProtectionDomain;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.List;
+import java.util.PropertyPermission;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+public class FieldSetAccessibleTest {
+
+    static final List<String> skipped = new ArrayList<>();
+    static final List<String> cantread = new ArrayList<>();
+    static final List<String> failed = new ArrayList<>();
+    static final AtomicLong classCount = new AtomicLong();
+    static final AtomicLong fieldCount = new AtomicLong();
+    static long startIndex = 0;
+    static long maxSize = Long.MAX_VALUE;
+    static long maxIndex = Long.MAX_VALUE;
+
+
+    // Test that all fields for any given class can be made accessibles
+    static void testSetFieldsAccessible(Class<?> c) {
+        for (Field f : c.getDeclaredFields()) {
+            fieldCount.incrementAndGet();
+            f.setAccessible(false);
+            f.setAccessible(true);
+        }
+    }
+
+    // Performs a series of test on the given class.
+    // At this time, we only call testSetFieldsAccessible(c)
+    public static boolean test(Class<?> c) {
+        //System.out.println(c.getName());
+        classCount.incrementAndGet();
+
+        // Call getDeclaredFields() and try to set their accessible flag.
+        testSetFieldsAccessible(c);
+
+        // add more tests here...
+
+        return c == Class.class;
+    }
+
+    // Prints a summary at the end of the test.
+    static void printSummary(long secs, long millis, long nanos) {
+        System.out.println("Tested " + fieldCount.get() + " fields of "
+                + classCount.get() + " classes in "
+                + secs + "s " + millis + "ms " + nanos + "ns");
+    }
+
+    public static void main(String[] args) throws Exception {
+        TestCase.valueOf(args[0]).run();
+    }
+
+    public static void run(TestCase test) {
+        System.out.println("Testing " + test);
+        test(listAllClassNames());
+        System.out.println("Passed " + test);
+    }
+
+    static Iterable<String> listAllClassNames() {
+        boolean sort = startIndex != 0 || maxIndex != Long.MAX_VALUE;
+        return new ClassNameListBuilder(sort);
+    }
+
+    static void test(Iterable<String> iterable) {
+        final long start = System.nanoTime();
+        boolean classFound = false;
+        int index = 0;
+        for (String s: iterable) {
+            if (index == maxIndex) break;
+            try {
+                if (index < startIndex) continue;
+                if (test(s)) {
+                    classFound = true;
+                }
+            } finally {
+                index++;
+            }
+        }
+        long elapsed = System.nanoTime() - start;
+        long secs = elapsed / 1000_000_000;
+        long millis = (elapsed % 1000_000_000) / 1000_000;
+        long nanos  = elapsed % 1000_000;
+        System.out.println("Unreadable path elements: " + cantread);
+        System.out.println("Skipped path elements: " + skipped);
+        System.out.println("Failed path elements: " + failed);
+        printSummary(secs, millis, nanos);
+
+        if (!failed.isEmpty()) {
+            throw new RuntimeException("Test failed for the following classes: " + failed);
+        }
+        if (!classFound && startIndex == 0 && index < maxIndex) {
+            // this is just to verify that we have indeed parsed rt.jar
+            // (or the java.base module)
+            throw  new RuntimeException("Test failed: Class.class not found...");
+        }
+        if (classCount.get() == 0 && startIndex == 0) {
+            throw  new RuntimeException("Test failed: no class found?");
+        }
+    }
+
+    static boolean test(String s) {
+        try {
+            if (s.startsWith("WrapperGenerator")) {
+                System.out.println("Skipping "+ s);
+                return false;
+            }
+            final Class<?> c = Class.forName(
+                    s.replace('/', '.').substring(0, s.length() - 6),
+                    false,
+                    null);
+            return test(c);
+        } catch (Exception t) {
+            t.printStackTrace(System.err);
+            failed.add(s);
+        } catch (NoClassDefFoundError e) {
+            e.printStackTrace(System.err);
+            failed.add(s);
+        }
+        return false;
+    }
+
+    static class ClassNameListBuilder implements Iterable<String> {
+        String[] bcp;
+        boolean sort;
+        ClassNameListBuilder(boolean sort) {
+            bcp = System.getProperty("sun.boot.class.path").split(File.pathSeparator);
+            this.sort = sort;
+        }
+
+        public List<String> build() {
+            return findClasses();
+        }
+
+        List<String> findClasses() {
+            List<String> list = new ArrayList<>();
+
+            for (String s : bcp) {
+                System.out.println("boot class path element: " + s);
+                if (s.endsWith(".jar")) {
+                    addJarEntries(s, list);
+                } else {
+                    addFolderEntries(new File(s), s, list);
+                }
+            }
+
+            if (sort) {
+                System.out.println("Sorting class names...");
+                Collections.sort(list);
+                System.out.println("\t... Sorted.");
+            }
+            return list;
+        }
+
+        void addJarEntries(String jarName, List<String> classNames) {
+            File f = new File(jarName);
+            if (f.canRead() && f.isFile()) {
+                try {
+                    JarFile jarFile = new JarFile(f);
+                    for (Enumeration<JarEntry> entries = jarFile.entries() ; entries.hasMoreElements() ;) {
+                        JarEntry e = entries.nextElement();
+                        if (e.isDirectory()) {
+                            continue;
+                        }
+                        if (e.getName().endsWith(".class")) {
+                            classNames.add(e.getName());
+                        }
+                    }
+                } catch (IOException e) {
+                    e.printStackTrace();
+                    skipped.add(jarName);
+                }
+            } else {
+                cantread.add(jarName);
+            }
+        }
+
+        void addFolderEntries(File root, String folderName, List<String> classNames) {
+            File f = new File(folderName);
+            if (f.canRead()) {
+               if (f.isDirectory()) {
+                   for (String child :  f.list()) {
+                       addFolderEntries(root, new File(f,child).getPath(), classNames);
+                   }
+               } else if (f.isFile() && f.getName().endsWith(".class")) {
+                   String className = root.toPath().relativize(f.toPath()).toString()
+                           .replace(File.separatorChar, '/');
+                   System.out.println("adding: " + className);
+                   classNames.add(className);
+               }
+            } else {
+                cantread.add(folderName);
+            }
+        }
+
+        @Override
+        public Iterator<String> iterator() {
+            return build().iterator();
+        }
+
+    }
+
+    // Test with or without a security manager
+    public static enum TestCase {
+        UNSECURE, SECURE;
+        public void run() throws Exception {
+            System.out.println("Running test case: " + name());
+            Configure.setUp(this);
+            FieldSetAccessibleTest.run(this);
+        }
+    }
+
+    // A helper class to configure the security manager for the test,
+    // and bypass it when needed.
+    static class Configure {
+        static Policy policy = null;
+        static final ThreadLocal<AtomicBoolean> allowAll = new ThreadLocal<AtomicBoolean>() {
+            @Override
+            protected AtomicBoolean initialValue() {
+                return  new AtomicBoolean(false);
+            }
+        };
+        static void setUp(TestCase test) {
+            switch (test) {
+                case SECURE:
+                    if (policy == null && System.getSecurityManager() != null) {
+                        throw new IllegalStateException("SecurityManager already set");
+                    } else if (policy == null) {
+                        policy = new SimplePolicy(TestCase.SECURE, allowAll);
+                        Policy.setPolicy(policy);
+                        System.setSecurityManager(new SecurityManager());
+                    }
+                    if (System.getSecurityManager() == null) {
+                        throw new IllegalStateException("No SecurityManager.");
+                    }
+                    if (policy == null) {
+                        throw new IllegalStateException("policy not configured");
+                    }
+                    break;
+                case UNSECURE:
+                    if (System.getSecurityManager() != null) {
+                        throw new IllegalStateException("SecurityManager already set");
+                    }
+                    break;
+                default:
+                    throw new InternalError("No such testcase: " + test);
+            }
+        }
+        static void doPrivileged(Runnable run) {
+            allowAll.get().set(true);
+            try {
+                run.run();
+            } finally {
+                allowAll.get().set(false);
+            }
+        }
+    }
+
+    // A Helper class to build a set of permissions.
+    final static class PermissionsBuilder {
+        final Permissions perms;
+        public PermissionsBuilder() {
+            this(new Permissions());
+        }
+        public PermissionsBuilder(Permissions perms) {
+            this.perms = perms;
+        }
+        public PermissionsBuilder add(Permission p) {
+            perms.add(p);
+            return this;
+        }
+        public PermissionsBuilder addAll(PermissionCollection col) {
+            if (col != null) {
+                for (Enumeration<Permission> e = col.elements(); e.hasMoreElements(); ) {
+                    perms.add(e.nextElement());
+                }
+            }
+            return this;
+        }
+        public Permissions toPermissions() {
+            final PermissionsBuilder builder = new PermissionsBuilder();
+            builder.addAll(perms);
+            return builder.perms;
+        }
+    }
+
+    // Policy for the test...
+    public static class SimplePolicy extends Policy {
+
+        final Permissions permissions;
+        final Permissions allPermissions;
+        final ThreadLocal<AtomicBoolean> allowAll;
+        public SimplePolicy(TestCase test, ThreadLocal<AtomicBoolean> allowAll) {
+            this.allowAll = allowAll;
+
+            // Permission needed by the tested code exercised in the test
+            permissions = new Permissions();
+            permissions.add(new RuntimePermission("fileSystemProvider"));
+            permissions.add(new RuntimePermission("createClassLoader"));
+            permissions.add(new RuntimePermission("closeClassLoader"));
+            permissions.add(new RuntimePermission("getClassLoader"));
+            permissions.add(new RuntimePermission("accessDeclaredMembers"));
+            permissions.add(new ReflectPermission("suppressAccessChecks"));
+            permissions.add(new PropertyPermission("*", "read"));
+            permissions.add(new FilePermission("<<ALL FILES>>", "read"));
+
+            // these are used for configuring the test itself...
+            allPermissions = new Permissions();
+            allPermissions.add(new java.security.AllPermission());
+        }
+
+        @Override
+        public boolean implies(ProtectionDomain domain, Permission permission) {
+            if (allowAll.get().get()) return allPermissions.implies(permission);
+            if (permissions.implies(permission)) return true;
+            if (permission instanceof java.lang.RuntimePermission) {
+                if (permission.getName().startsWith("accessClassInPackage.")) {
+                    // add these along to the set of permission we have, when we
+                    // discover that we need them.
+                    permissions.add(permission);
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        @Override
+        public PermissionCollection getPermissions(CodeSource codesource) {
+            return new PermissionsBuilder().addAll(allowAll.get().get()
+                    ? allPermissions : permissions).toPermissions();
+        }
+
+        @Override
+        public PermissionCollection getPermissions(ProtectionDomain domain) {
+            return new PermissionsBuilder().addAll(allowAll.get().get()
+                    ? allPermissions : permissions).toPermissions();
+        }
+    }
+
+}