329 lines
11 KiB
Java
329 lines
11 KiB
Java
/*
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* Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.*;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import java.lang.reflect.InvocationTargetException;
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import java.security.*;
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class XObjectInputStream extends AbstractObjectInputStream {
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XObjectInputStream(InputStream in)
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throws IOException, StreamCorruptedException
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{
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super(in);
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dis = new DataInputStream(in);
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}
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public final void defaultReadObject()
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throws IOException, ClassNotFoundException, NotActiveException
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{
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}
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protected final Object readObjectOverride()
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throws OptionalDataException, ClassNotFoundException, IOException {
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Object readResult = null;
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Object prevObject = currentObject;
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Class<?> prevDesc = currentClassDescriptor;
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boolean NotImplemented = true;
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if (NotImplemented)
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throw new IOException("readObjectOverride not implemented");
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try {
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currentObject = null;
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//Read in class of object to currentDescriptor
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String className = dis.readUTF();
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currentClassDescriptor = Class.forName(className);
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try {
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//currentObject = Allocate a new instance of the class
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currentObject =
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allocateNewObject(currentClassDescriptor,
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currentClassDescriptor);
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} catch (InstantiationException e) {
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throw new InvalidClassException(currentClassDescriptor.getName(),
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e.getMessage());
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} catch (IllegalAccessException e) {
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throw new InvalidClassException(currentClassDescriptor.getName(),
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e.getMessage());
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}
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//if currentDescriptor.isAssignable(Externalizable.class) {
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// Object[] argList = {this};
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// InvokeMethod(currentObject, readExternalMethod, argList);
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//} else {
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// Does currentDescriptor have a readObject method
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// if it does
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// invokeMethod(this, readObjectMethod, {this});
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// else
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// defaultReadObject();
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//}
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// check for replacement on currentObject.
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// if toplevel readobject
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// doObjectValidations.
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} finally {
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readResult = currentObject;
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currentObject = prevObject;
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}
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return readResult;
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}
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public ObjectInputStream.GetField readFields()
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throws IOException, ClassNotFoundException, NotActiveException {
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throw new Error("not implememted");
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}
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public synchronized void registerValidation(ObjectInputValidation obj,
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int prio)
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throws NotActiveException, InvalidObjectException {
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}
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public int read() throws IOException {
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return dis.read();
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}
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public int read(byte[] data, int offset, int length) throws IOException {
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return dis.read(data, offset, length);
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}
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public int available() throws IOException {
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return in.available();
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}
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public boolean readBoolean() throws IOException {
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throw new IOException("Not Implemented");
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}
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public byte readByte() throws IOException {
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throw new IOException("Not Implemented");
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}
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public int readUnsignedByte() throws IOException {
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throw new IOException("Not Implemented");
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}
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public short readShort() throws IOException {
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throw new IOException("Not Implemented");
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}
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public int readUnsignedShort() throws IOException {
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throw new IOException("Not Implemented");
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}
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public char readChar() throws IOException {
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throw new IOException("Not Implemented");
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}
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public int readInt() throws IOException {
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throw new IOException("Not Implemented");
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}
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public long readLong() throws IOException {
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throw new IOException("Not Implemented");
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}
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public float readFloat() throws IOException {
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throw new IOException("Not Implemented");
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}
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public double readDouble() throws IOException {
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throw new IOException("Not Implemented");
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}
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public void readFully(byte[] data) throws IOException {
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throw new IOException("Not Implemented");
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}
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public void readFully(byte[] data, int offset, int size) throws IOException {
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throw new IOException("Not Implemented");
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}
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public int skipBytes(int len) throws IOException {
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throw new IOException("Not Implemented");
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}
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public String readLine() throws IOException {
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throw new IOException("Not Implemented");
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}
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public String readUTF() throws IOException {
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throw new IOException("Not Implemented");
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}
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public void close() throws IOException {
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in.close();
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}
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/**********************************************************/
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/**
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* Provide access to the persistent fields read from the input stream.
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*/
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public static class InternalGetField extends ObjectInputStream.GetField {
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/**
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* Get the ObjectStreamClass that describes the fields in the stream.
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*/
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public ObjectStreamClass getObjectStreamClass() {
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throw new Error("not implemented");
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}
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/**
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* Return true if the named field is defaulted and has no value
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* in this stream.
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*/
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public boolean defaulted(String name)
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throws IOException, IllegalArgumentException
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{
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throw new Error("not implemented");
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//ObjectStreamField field = checkField(name, null);
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}
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public boolean get(String name, boolean defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public char get(String name, char defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public byte get(String name, byte defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public short get(String name, short defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public int get(String name, int defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public long get(String name, long defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public float get(String name, float defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public double get(String name, double defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public Object get(String name, Object defvalue)
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throws IOException, IllegalArgumentException {
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throw new Error("not implemented");
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}
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public void read(ObjectInputStream in)
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throws IOException, ClassNotFoundException {
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}
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}
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private Object currentObject;
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private Class<?> currentClassDescriptor;
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/****************************************************************/
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/* CODE LIFTED FROM ObjectStreamClass constuctor.
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* ObjectStreamClass.readObjectMethod is private.
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*
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* Look for the readObject method
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* Set the accessible flag on it here. ObjectOutputStream
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* will call it as necessary.
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*/
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public static Method getReadObjectMethod(final Class<?> cl) {
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Method readObjectMethod =
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java.security.AccessController.doPrivileged
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(new java.security.PrivilegedAction<Method>() {
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public Method run() {
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Method m = null;
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try {
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Class<?>[] args = {ObjectInputStream.class};
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m = cl.getDeclaredMethod("readObject", args);
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int mods = m.getModifiers();
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// Method must be private and non-static
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if (!Modifier.isPrivate(mods) ||
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Modifier.isStatic(mods)) {
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m = null;
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} else {
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m.setAccessible(true);
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}
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} catch (NoSuchMethodException e) {
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m = null;
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}
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return m;
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}
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});
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return readObjectMethod;
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}
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/*************************************************************/
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/* taken verbatim from ObjectInputStream. */
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private static void invokeMethod(final Object obj, final Method m,
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final Object[] argList)
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throws IOException
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{
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try {
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java.security.AccessController.doPrivileged
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(new java.security.PrivilegedExceptionAction<Void>() {
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public Void run() throws InvocationTargetException,
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java.lang.IllegalAccessException {
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m.invoke(obj, argList);
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return null;
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}
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});
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} catch (java.security.PrivilegedActionException e) {
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Exception ex = e.getException();
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if (ex instanceof InvocationTargetException) {
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Throwable t =
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((InvocationTargetException)ex).getTargetException();
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if (t instanceof IOException)
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throw (IOException)t;
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else if (t instanceof RuntimeException)
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throw (RuntimeException) t;
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else if (t instanceof Error)
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throw (Error) t;
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else
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throw new Error("interal error");
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} else {
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// IllegalAccessException cannot happen
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}
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}
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}
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protected boolean enableResolveObject(boolean enable)
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throws SecurityException
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{
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throw new Error("To be implemented");
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}
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private DataInputStream dis;
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};
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