6822057: X11 and Win32GraphicsDevice don't clone arrays returned from getConfigurations()

Reviewed-by: prr, hawtin

jdk/src/solaris/classes/sun/awt/X11GraphicsDevice.java

@@ -134,7 +134,7 @@ public class X11GraphicsDevice
                 makeConfigurations();
             }
         }
-        return configs;
+        return configs.clone();
     }
 
     private void makeConfigurations() {

jdk/src/windows/classes/sun/awt/Win32GraphicsDevice.java

@@ -165,7 +165,7 @@ public class Win32GraphicsDevice extends GraphicsDevice implements
                 if (defaultConfig != null) {
                     configs = new GraphicsConfiguration[1];
                     configs[0] = defaultConfig;
-                    return configs;
+                    return configs.clone();
                 }
             }
 
@@ -196,7 +196,7 @@ public class Win32GraphicsDevice extends GraphicsDevice implements
             configs = new GraphicsConfiguration[v.size()];
             v.copyInto(configs);
         }
-        return configs;
+        return configs.clone();
     }
 
     /**

jdk/src/windows/classes/sun/java2d/d3d/D3DGraphicsDevice.java

@@ -426,7 +426,7 @@ public class D3DGraphicsDevice extends Win32GraphicsDevice {
                 if (defaultConfig != null) {
                     configs = new GraphicsConfiguration[1];
                     configs[0] = defaultConfig;
-                    return configs;
+                    return configs.clone();
                 }
             }
         }

jdk/test/java/awt/GraphicsDevice/CloneConfigsTest.java

@@ -0,0 +1,118 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug     6822057
+ *
+ * @summary Test verifies that list of supported graphics configurations
+ *          can not be changed via modification of elements of an array
+ *          returned by getConfiguration() method.
+ *
+ * @run     main CloneConfigsTest
+ * @run     main/othervm -Dsun.java2d.opengl=True CloneConfigsTest
+ * @run     main/othervm -Dsun.java2d.d3d=true CloneConfigsTest
+ * @run     main/othervm -Dsun.java2d.noddraw=true CloneConfigsTest
+ */
+
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
+import java.awt.GraphicsEnvironment;
+import java.awt.Rectangle;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+
+public class CloneConfigsTest {
+
+    public static void main(String[] args) {
+        GraphicsEnvironment env =
+                GraphicsEnvironment.getLocalGraphicsEnvironment();
+
+        GraphicsDevice[] devices = env.getScreenDevices();
+
+        GraphicsConfiguration c = new TestConfig();
+
+        for (GraphicsDevice gd : devices) {
+            System.out.println("Device: " + gd);
+
+            GraphicsConfiguration[] configs = gd.getConfigurations();
+
+            for (int i = 0; i < configs.length; i++) {
+                GraphicsConfiguration gc  = configs[i];
+                System.out.println("\tConfig: " + gc);
+
+                configs[i] = c;
+            }
+
+            // verify whether array of configs was modified
+            configs = gd.getConfigurations();
+            for (GraphicsConfiguration gc : configs) {
+                if (gc == c) {
+                    throw new RuntimeException("Test failed.");
+                }
+            }
+            System.out.println("Test passed.");
+        }
+    }
+
+    private static class TestConfig extends GraphicsConfiguration {
+
+        @Override
+        public GraphicsDevice getDevice() {
+            throw new UnsupportedOperationException("Not supported yet.");
+        }
+
+        @Override
+        public BufferedImage createCompatibleImage(int width, int height) {
+            throw new UnsupportedOperationException("Not supported yet.");
+        }
+
+        @Override
+        public ColorModel getColorModel() {
+            throw new UnsupportedOperationException("Not supported yet.");
+        }
+
+        @Override
+        public ColorModel getColorModel(int transparency) {
+            throw new UnsupportedOperationException("Not supported yet.");
+        }
+
+        @Override
+        public AffineTransform getDefaultTransform() {
+            throw new UnsupportedOperationException("Not supported yet.");
+        }
+
+        @Override
+        public AffineTransform getNormalizingTransform() {
+            throw new UnsupportedOperationException("Not supported yet.");
+        }
+
+        @Override
+        public Rectangle getBounds() {
+            throw new UnsupportedOperationException("Not supported yet.");
+        }
+
+    }
+
+}