/*
* Copyright (c) 1998, 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.
*
* 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.
*/
import java.io.*;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.InvocationTargetException;
import java.security.*;
class XObjectInputStream extends AbstractObjectInputStream {
XObjectInputStream(InputStream in)
throws IOException, StreamCorruptedException
{
super(in);
dis = new DataInputStream(in);
}
final public void defaultReadObject()
throws IOException, ClassNotFoundException, NotActiveException
{
}
final protected Object readObjectOverride()
throws OptionalDataException, ClassNotFoundException, IOException {
Object readResult = null;
Object prevObject = currentObject;
Class prevDesc = currentClassDescriptor;
boolean NotImplemented = true;
if (NotImplemented)
throw new IOException("readObjectOverride not implemented");
try {
currentObject = null;
//Read in class of object to currentDescriptor
String className = dis.readUTF();
currentClassDescriptor = Class.forName(className);
try {
//currentObject = Allocate a new instance of the class
currentObject =
allocateNewObject(currentClassDescriptor,
currentClassDescriptor);
} catch (InstantiationException e) {
throw new InvalidClassException(currentClassDescriptor.getName(),
e.getMessage());
} catch (IllegalAccessException e) {
throw new InvalidClassException(currentClassDescriptor.getName(),
e.getMessage());
}
//if currentDescriptor.isAssignable(Externalizable.class) {
// Object[] argList = {this};
// InvokeMethod(currentObject, readExternalMethod, argList);
//} else {
// Does currentDescriptor have a readObject method
// if it does
// invokeMethod(this, readObjectMethod, {this});
// else
// defaultReadObject();
//}
// check for replacement on currentObject.
// if toplevel readobject
// doObjectValidations.
} finally {
readResult = currentObject;
currentObject = prevObject;
}
return readResult;
}
public ObjectInputStream.GetField readFields()
throws IOException, ClassNotFoundException, NotActiveException {
throw new Error("not implememted");
}
public synchronized void registerValidation(ObjectInputValidation obj,
int prio)
throws NotActiveException, InvalidObjectException {
}
public int read() throws IOException {
return dis.read();
}
public int read(byte[] data, int offset, int length) throws IOException {
return dis.read(data, offset, length);
}
public int available() throws IOException {
return in.available();
}
public boolean readBoolean() throws IOException {
throw new IOException("Not Implemented");
}
public byte readByte() throws IOException {
throw new IOException("Not Implemented");
}
public int readUnsignedByte() throws IOException {
throw new IOException("Not Implemented");
}
public short readShort() throws IOException {
throw new IOException("Not Implemented");
}
public int readUnsignedShort() throws IOException {
throw new IOException("Not Implemented");
}
public char readChar() throws IOException {
throw new IOException("Not Implemented");
}
public int readInt() throws IOException {
throw new IOException("Not Implemented");
}
public long readLong() throws IOException {
throw new IOException("Not Implemented");
}
public float readFloat() throws IOException {
throw new IOException("Not Implemented");
}
public double readDouble() throws IOException {
throw new IOException("Not Implemented");
}
public void readFully(byte[] data) throws IOException {
throw new IOException("Not Implemented");
}
public void readFully(byte[] data, int offset, int size) throws IOException {
throw new IOException("Not Implemented");
}
public int skipBytes(int len) throws IOException {
throw new IOException("Not Implemented");
}
public String readLine() throws IOException {
throw new IOException("Not Implemented");
}
public String readUTF() throws IOException {
throw new IOException("Not Implemented");
}
public void close() throws IOException {
in.close();
}
/**********************************************************/
/**
* Provide access to the persistent fields read from the input stream.
*/
public static class InternalGetField extends ObjectInputStream.GetField {
/**
* Get the ObjectStreamClass that describes the fields in the stream.
*/
public ObjectStreamClass getObjectStreamClass() {
throw new Error("not implemented");
}
/**
* Return true if the named field is defaulted and has no value
* in this stream.
*/
public boolean defaulted(String name)
throws IOException, IllegalArgumentException
{
throw new Error("not implemented");
//ObjectStreamField field = checkField(name, null);
}
public boolean get(String name, boolean defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public char get(String name, char defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public byte get(String name, byte defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public short get(String name, short defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public int get(String name, int defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public long get(String name, long defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public float get(String name, float defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public double get(String name, double defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public Object get(String name, Object defvalue)
throws IOException, IllegalArgumentException {
throw new Error("not implemented");
}
public void read(ObjectInputStream in)
throws IOException, ClassNotFoundException {
}
}
private Object currentObject;
private Class currentClassDescriptor;
/****************************************************************/
/* CODE LIFTED FROM ObjectStreamClass constuctor.
* ObjectStreamClass.readObjectMethod is private.
*
* Look for the readObject method
* Set the accessible flag on it here. ObjectOutputStream
* will call it as necessary.
*/
static public Method getReadObjectMethod(final Class cl) {
Method readObjectMethod = (Method)
java.security.AccessController.doPrivileged
(new java.security.PrivilegedAction() {
public Object run() {
Method m = null;
try {
Class[] args = {ObjectInputStream.class};
m = cl.getDeclaredMethod("readObject", args);
int mods = m.getModifiers();
// Method must be private and non-static
if (!Modifier.isPrivate(mods) ||
Modifier.isStatic(mods)) {
m = null;
} else {
m.setAccessible(true);
}
} catch (NoSuchMethodException e) {
m = null;
}
return m;
}
});
return readObjectMethod;
}
/*************************************************************/
/* taken verbatim from ObjectInputStream. */
static private void invokeMethod(final Object obj, final Method m,
final Object[] argList)
throws IOException
{
try {
java.security.AccessController.doPrivileged
(new java.security.PrivilegedExceptionAction() {
public Object run() throws InvocationTargetException,
java.lang.IllegalAccessException {
m.invoke(obj, argList);
return null;
}
});
} catch (java.security.PrivilegedActionException e) {
Exception ex = e.getException();
if (ex instanceof InvocationTargetException) {
Throwable t =
((InvocationTargetException)ex).getTargetException();
if (t instanceof IOException)
throw (IOException)t;
else if (t instanceof RuntimeException)
throw (RuntimeException) t;
else if (t instanceof Error)
throw (Error) t;
else
throw new Error("interal error");
} else {
// IllegalAccessException cannot happen
}
}
}
protected boolean enableResolveObject(boolean enable)
throws SecurityException
{
throw new Error("To be implemented");
}
private DataInputStream dis;
};