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$FreeBSD$
--- ../../deploy/src/plugin/src/share/classes/sun/plugin/liveconnect/ReplaceMethod.java 1 Jan 1970 00:00:00 -0000
+++ ../../deploy/src/plugin/src/share/classes/sun/plugin/liveconnect/ReplaceMethod.java 3 Dec 2004 03:56:58 -0000 1.1
@@ -0,0 +1,88 @@
+/*
+ * @(#)ReplaceMethod.java 1.1 04/06/20
+ *
+ * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
+ * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ */
+package sun.plugin.liveconnect;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import sun.plugin.javascript.JSClassLoader;
+
+public class ReplaceMethod {
+ /*
+ * Replace the inaccessible method by a suitable method on public
+ * class/interface accessible to the calling JavaScript code.
+ * Returns null if accessible method is not found.
+ */
+ static Method getJScriptMethod(Method start) {
+ Class cls = start.getDeclaringClass();
+
+ if (Modifier.isPublic(cls.getModifiers())) {
+ return start;
+ }
+
+ String name = start.getName();
+ Class[] params = start.getParameterTypes();
+
+ Method result = null;
+ while (cls != null && result == null) {
+ result = getPublicMethod(cls, name, params);
+ if (result == null) {
+ result = getJScriptInterfaceMethod(cls, name, params);
+ }
+ cls = cls.getSuperclass();
+ }
+ return result;
+ }
+
+ /*
+ * Process the immediate interfaces of this class or interface.
+ */
+ static Method getJScriptInterfaceMethod(Class cls, String name, Class[] params) {
+ Method result = null;
+ Class[] intfs = cls.getInterfaces();
+ for (int i=0; i < intfs.length && result == null; i++) {
+ Class intf = intfs[i];
+ result = getPublicMethod(intf, name, params);
+ if (result == null) {
+ result = getJScriptInterfaceMethod(intf, name, params);
+ }
+ }
+ return result;
+ }
+
+ /*
+ *
+ * Process the methods in this class or interface
+ */
+ static private Method getPublicMethod(Class cls, String name, Class[] params) {
+ try {
+ /*
+ * This class or interface is non-public so we
+ * can't use any of it's methods. Go back and
+ * try again with a superclass or superinterface.
+ */
+ if (!Modifier.isPublic(cls.getModifiers())) {
+ return null;
+ }
+
+ /*
+ * This call will fail if 'cls' is in a restricted
+ * package and we don't have permission to access
+ * it.
+ */
+ if (!JSClassLoader.isPackageAccessible(cls)) {
+ return null;
+ }
+ return cls.getMethod(name, params);
+ } catch (NoSuchMethodException nsme) {
+ return null;
+ } catch (SecurityException se) {
+ return null;
+ }
+ }
+}
+
+
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