--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jfr/share/classes/jdk/jfr/FlightRecorderPermission.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 2016, 2018, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package jdk.jfr;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+import jdk.jfr.internal.PlatformEventType;
+import jdk.jfr.internal.PlatformRecording;
+import jdk.jfr.internal.PrivateAccess;
+import jdk.jfr.internal.Type;
+import jdk.jfr.internal.Utils;
+
+/**
+ * Permission for controlling access to Flight Recorder.
+ * <p>
+ * The following table provides a summary of what the permission
+ * allows, and the risks of granting code the permission.
+ *
+ * <table class="striped">
+ * <caption style="display:none">Table shows permission target name,
+ * what the permission allows, and associated risks</caption>
+ * <thead>
+ * <tr>
+ * <th scope="col">Permission Target Name</th>
+ * <th scope="col">What the Permission Allows</th>
+ * <th scope="col">Risks of Allowing this Permission</th>
+ * </tr>
+ * </thead>
+ *
+ * <tbody>
+ * <tr>
+ * <th scope="row">{@code accessFlightRecorder}</th>
+ * <td>Ability to create a Flight Recorder instance, register callbacks to
+ * monitor the Flight Recorder life cycle, and control an existing instance
+ * of Flight Recorder, which can record and dump runtime information, such as
+ * stack traces, class names, and data in user defined events.</td>
+ * <td>A malicious user may be able to extract sensitive information that is stored in
+ * events and interrupt Flight Recorder by installing listeners or hooks that
+ * never finish.</td>
+ * </tr>
+ * <tr>
+ * <th scope="row">{@code registerEvent}</th>
+ * <td>Ability to register events, write data to the Flight Recorder buffers,
+ * and execute code in a callback function for periodic events.
+ *
+ * <td>A malicious user may be able to write sensitive information to Flight
+ * Recorder buffers.</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ *
+ * <p>
+ * Typically, programmers do not create {@code FlightRecorderPermission} objects
+ * directly. Instead the objects are created by the security policy code that is based on
+ * reading the security policy file.
+ *
+ * @since 9
+ *
+ * @see java.security.BasicPermission
+ * @see java.security.Permission
+ * @see java.security.Permissions
+ * @see java.security.PermissionCollection
+ * @see java.lang.SecurityManager
+ *
+ */
+@SuppressWarnings("serial")
+public final class FlightRecorderPermission extends java.security.BasicPermission {
+
+ // Purpose of InternalAccess is to give classes in jdk.jfr.internal
+ // access to package private methods in this package (jdk.jfr).
+ //
+ // The initialization could be done in any class in this package,
+ // but this one was chosen because it is light weight and
+ // lacks dependencies on other public classes.
+ static {
+ PrivateAccess.setPrivateAccess(new InternalAccess());
+ }
+
+ private final static class InternalAccess extends PrivateAccess {
+
+ @Override
+ public Type getType(Object o) {
+ if (o instanceof AnnotationElement) {
+ return ((AnnotationElement) o).getType();
+ }
+ if (o instanceof EventType) {
+ return ((EventType) o).getType();
+ }
+ if (o instanceof ValueDescriptor) {
+ return ((ValueDescriptor) o).getType();
+ }
+ if (o instanceof SettingDescriptor) {
+ return ((SettingDescriptor) o).getType();
+ }
+ throw new Error("Unknown type " + o.getClass());
+ }
+
+ @Override
+ public Configuration newConfiguration(String name, String label, String description, String provider, Map<String, String> settings, String contents) {
+ return new Configuration(name, label, description, provider, settings, contents);
+ }
+
+ @Override
+ public EventType newEventType(PlatformEventType platformEventType) {
+ return new EventType(platformEventType);
+ }
+
+ @Override
+ public AnnotationElement newAnnotation(Type annotationType, List<Object> values, boolean boot) {
+ return new AnnotationElement(annotationType, values, boot);
+ }
+
+ @Override
+ public ValueDescriptor newValueDescriptor(String name, Type fieldType, List<AnnotationElement> annos, int dimension, boolean constantPool, String fieldName) {
+ return new ValueDescriptor(fieldType, name, annos, dimension, constantPool, fieldName);
+ }
+
+ @Override
+ public PlatformRecording getPlatformRecording(Recording r) {
+ return r.getInternal();
+ }
+
+ @Override
+ public PlatformEventType getPlatformEventType(EventType eventType) {
+ return eventType.getPlatformEventType();
+ }
+
+ @Override
+ public boolean isConstantPool(ValueDescriptor v) {
+ return v.isConstantPool();
+ }
+
+ @Override
+ public void setAnnotations(ValueDescriptor v, List<AnnotationElement> a) {
+ v.setAnnotations(a);
+ }
+
+ @Override
+ public void setAnnotations(SettingDescriptor s, List<AnnotationElement> a) {
+ s.setAnnotations(a);
+ }
+
+ @Override
+ public String getFieldName(ValueDescriptor v) {
+ return v.getJavaFieldName();
+ }
+
+ @Override
+ public ValueDescriptor newValueDescriptor(Class<?> type, String name) {
+ return new ValueDescriptor(type, name, Collections.emptyList(), true);
+ }
+
+ @Override
+ public SettingDescriptor newSettingDescriptor(Type type, String name, String defaultValue, List<AnnotationElement> annotations) {
+ return new SettingDescriptor(type, name, defaultValue, annotations);
+ }
+
+ @Override
+ public boolean isUnsigned(ValueDescriptor v) {
+ return v.isUnsigned();
+ }
+ }
+
+ /**
+ * Constructs a {@code FlightRecorderPermission} with the specified name.
+ *
+ * @param name the permission name, must be either
+ * {@code "accessFlightRecorder"} or {@code "registerEvent"}, not
+ * {@code null}
+ *
+ * @throws IllegalArgumentException if {@code name} is empty or not valid
+ */
+ public FlightRecorderPermission(String name) {
+ super(Objects.requireNonNull(name));
+ if (!name.equals(Utils.ACCESS_FLIGHT_RECORDER) && !name.equals(Utils.REGISTER_EVENT)) {
+ throw new IllegalArgumentException("name: " + name);
+ }
+ }
+}