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-rw-r--r--src/Java/shaded/reflectionfactory/ReflectUtil.java338
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diff --git a/src/Java/shaded/reflectionfactory/ReflectUtil.java b/src/Java/shaded/reflectionfactory/ReflectUtil.java
deleted file mode 100644
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--- a/src/Java/shaded/reflectionfactory/ReflectUtil.java
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@@ -1,338 +0,0 @@
-/*
- * Copyright (c) 2005, 2013, 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 shaded.reflectionfactory;
-
-import java.lang.reflect.Member;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.lang.reflect.Proxy;
-
-public final class ReflectUtil {
-
- private ReflectUtil() {
- }
-
- public static Class<?> forName(String name)
- throws ClassNotFoundException {
- checkPackageAccess(name);
- return Class.forName(name);
- }
-
- public static Object newInstance(Class<?> cls)
- throws InstantiationException, IllegalAccessException {
- checkPackageAccess(cls);
- return cls.newInstance();
- }
-
- /*
- * Reflection.ensureMemberAccess is overly-restrictive
- * due to a bug. We awkwardly work around it for now.
- */
- public static void ensureMemberAccess(Class<?> currentClass,
- Class<?> memberClass,
- Object target,
- int modifiers)
- throws IllegalAccessException
- {
- if (target == null && Modifier.isProtected(modifiers)) {
- int mods = modifiers;
- mods = mods & (~Modifier.PROTECTED);
- mods = mods | Modifier.PUBLIC;
-
- /*
- * See if we fail because of class modifiers
- */
- Reflection.ensureMemberAccess(currentClass,
- memberClass,
- target,
- mods);
- try {
- /*
- * We're still here so class access was ok.
- * Now try with default field access.
- */
- mods = mods & (~Modifier.PUBLIC);
- Reflection.ensureMemberAccess(currentClass,
- memberClass,
- target,
- mods);
- /*
- * We're still here so access is ok without
- * checking for protected.
- */
- return;
- } catch (IllegalAccessException e) {
- /*
- * Access failed but we're 'protected' so
- * if the test below succeeds then we're ok.
- */
- if (isSubclassOf(currentClass, memberClass)) {
- return;
- } else {
- throw e;
- }
- }
- } else {
- Reflection.ensureMemberAccess(currentClass,
- memberClass,
- target,
- modifiers);
- }
- }
-
- private static boolean isSubclassOf(Class<?> queryClass,
- Class<?> ofClass)
- {
- while (queryClass != null) {
- if (queryClass == ofClass) {
- return true;
- }
- queryClass = queryClass.getSuperclass();
- }
- return false;
- }
-
- /**
- * Does a conservative approximation of member access check. Use this if
- * you don't have an actual 'userland' caller Class/ClassLoader available.
- * This might be more restrictive than a precise member access check where
- * you have a caller, but should never allow a member access that is
- * forbidden.
- *
- * @param m the {@code Member} about to be accessed
- */
- public static void conservativeCheckMemberAccess(Member m) throws SecurityException{
- final SecurityManager sm = System.getSecurityManager();
- if (sm == null)
- return;
-
- // Check for package access on the declaring class.
- //
- // In addition, unless the member and the declaring class are both
- // public check for access declared member permissions.
- //
- // This is done regardless of ClassLoader relations between the {@code
- // Member m} and any potential caller.
-
- final Class<?> declaringClass = m.getDeclaringClass();
-
- checkPackageAccess(declaringClass);
-
- if (Modifier.isPublic(m.getModifiers()) &&
- Modifier.isPublic(declaringClass.getModifiers()))
- return;
-
- // Check for declared member access.
- sm.checkPermission(SecurityConstants.CHECK_MEMBER_ACCESS_PERMISSION);
- }
-
- /**
- * Checks package access on the given class.
- *
- * If it is a {@link Proxy#isProxyClass(java.lang.Class)} that implements
- * a non-public interface (i.e. may be in a non-restricted package),
- * also check the package access on the proxy interfaces.
- */
- public static void checkPackageAccess(Class<?> clazz) {
- checkPackageAccess(clazz.getName());
- if (isNonPublicProxyClass(clazz)) {
- checkProxyPackageAccess(clazz);
- }
- }
-
- /**
- * Checks package access on the given classname.
- * This method is typically called when the Class instance is not
- * available and the caller attempts to load a class on behalf
- * the true caller (application).
- */
- public static void checkPackageAccess(String name) {
- SecurityManager s = System.getSecurityManager();
- if (s != null) {
- String cname = name.replace('/', '.');
- if (cname.startsWith("[")) {
- int b = cname.lastIndexOf('[') + 2;
- if (b > 1 && b < cname.length()) {
- cname = cname.substring(b);
- }
- }
- int i = cname.lastIndexOf('.');
- if (i != -1) {
- s.checkPackageAccess(cname.substring(0, i));
- }
- }
- }
-
- public static boolean isPackageAccessible(Class<?> clazz) {
- try {
- checkPackageAccess(clazz);
- } catch (SecurityException e) {
- return false;
- }
- return true;
- }
-
- // Returns true if p is an ancestor of cl i.e. class loader 'p' can
- // be found in the cl's delegation chain
- private static boolean isAncestor(ClassLoader p, ClassLoader cl) {
- ClassLoader acl = cl;
- do {
- acl = acl.getParent();
- if (p == acl) {
- return true;
- }
- } while (acl != null);
- return false;
- }
-
- /**
- * Returns true if package access check is needed for reflective
- * access from a class loader 'from' to classes or members in
- * a class defined by class loader 'to'. This method returns true
- * if 'from' is not the same as or an ancestor of 'to'. All code
- * in a system domain are granted with all permission and so this
- * method returns false if 'from' class loader is a class loader
- * loading system classes. On the other hand, if a class loader
- * attempts to access system domain classes, it requires package
- * access check and this method will return true.
- */
- public static boolean needsPackageAccessCheck(ClassLoader from, ClassLoader to) {
- if (from == null || from == to)
- return false;
-
- if (to == null)
- return true;
-
- return !isAncestor(from, to);
- }
-
- /**
- * Check package access on the proxy interfaces that the given proxy class
- * implements.
- *
- * @param clazz Proxy class object
- */
- public static void checkProxyPackageAccess(Class<?> clazz) {
- SecurityManager s = System.getSecurityManager();
- if (s != null) {
- // check proxy interfaces if the given class is a proxy class
- if (Proxy.isProxyClass(clazz)) {
- for (Class<?> intf : clazz.getInterfaces()) {
- checkPackageAccess(intf);
- }
- }
- }
- }
-
- /**
- * Access check on the interfaces that a proxy class implements and throw
- * {@code SecurityException} if it accesses a restricted package from
- * the caller's class loader.
- *
- * @param ccl the caller's class loader
- * @param interfaces the list of interfaces that a proxy class implements
- */
- public static void checkProxyPackageAccess(ClassLoader ccl,
- Class<?>... interfaces)
- {
- SecurityManager sm = System.getSecurityManager();
- if (sm != null) {
- for (Class<?> intf : interfaces) {
- ClassLoader cl = intf.getClassLoader();
- if (needsPackageAccessCheck(ccl, cl)) {
- checkPackageAccess(intf);
- }
- }
- }
- }
-
- // Note that bytecode instrumentation tools may exclude 'sun.*'
- // classes but not generated proxy classes and so keep it in com.sun.*
- public static final String PROXY_PACKAGE = "com.sun.proxy";
-
- /**
- * Test if the given class is a proxy class that implements
- * non-public interface. Such proxy class may be in a non-restricted
- * package that bypasses checkPackageAccess.
- */
- public static boolean isNonPublicProxyClass(Class<?> cls) {
- String name = cls.getName();
- int i = name.lastIndexOf('.');
- String pkg = (i != -1) ? name.substring(0, i) : "";
- return Proxy.isProxyClass(cls) && !pkg.equals(PROXY_PACKAGE);
- }
-
- /**
- * Check if the given method is a method declared in the proxy interface
- * implemented by the given proxy instance.
- *
- * @param proxy a proxy instance
- * @param method an interface method dispatched to a InvocationHandler
- *
- * @throws IllegalArgumentException if the given proxy or method is invalid.
- */
- public static void checkProxyMethod(Object proxy, Method method) {
- // check if it is a valid proxy instance
- if (proxy == null || !Proxy.isProxyClass(proxy.getClass())) {
- throw new IllegalArgumentException("Not a Proxy instance");
-}
- if (Modifier.isStatic(method.getModifiers())) {
- throw new IllegalArgumentException("Can't handle static method");
- }
-
- Class<?> c = method.getDeclaringClass();
- if (c == Object.class) {
- String name = method.getName();
- if (name.equals("hashCode") || name.equals("equals") || name.equals("toString")) {
- return;
- }
- }
-
- if (isSuperInterface(proxy.getClass(), c)) {
- return;
- }
-
- // disallow any method not declared in one of the proxy intefaces
- throw new IllegalArgumentException("Can't handle: " + method);
- }
-
- private static boolean isSuperInterface(Class<?> c, Class<?> intf) {
- for (Class<?> i : c.getInterfaces()) {
- if (i == intf) {
- return true;
- }
- if (isSuperInterface(i, intf)) {
- return true;
- }
- }
- return false;
- }
-
- public static boolean isVMAnonymousClass(Class<?> cls) {
- return cls.getName().indexOf("/") > -1;
- }
-}
generated by cgit (git 2.46.0) at 2025-03-09 23:37:39 +0000