649a1a476c
* java/io/ObjectInputStream.java (lookupClass): New method. (currentLoader): New method. (inputGetObjectStreamClasses): New method. (assignNewHandle): Documented. (currentClassLoader): Documented. * java/io/ObjectStreamClass.java (setClass): Changed API. Better handling of the imported/exported fields. (getSerialPersistentFields): Make it throw previously caught exceptions so they can handled in setClass. From-SVN: r74693
1875 lines
55 KiB
Java
1875 lines
55 KiB
Java
/* ObjectInputStream.java -- Class used to read serialized objects
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.io;
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import java.lang.reflect.Array;
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import java.lang.reflect.Modifier;
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import java.lang.reflect.Proxy;
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import java.security.PrivilegedAction;
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import java.security.AccessController;
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import java.util.Arrays;
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import java.util.Hashtable;
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import java.util.Vector;
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import gnu.java.io.ObjectIdentityWrapper;
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import gnu.java.lang.reflect.TypeSignature;
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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.InvocationTargetException;
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import gnu.classpath.Configuration;
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public class ObjectInputStream extends InputStream
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implements ObjectInput, ObjectStreamConstants
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{
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/**
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* Creates a new <code>ObjectInputStream</code> that will do all of
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* its reading from <code>in</code>. This method also checks
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* the stream by reading the header information (stream magic number
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* and stream version).
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*
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* @exception IOException Reading stream header from underlying
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* stream cannot be completed.
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*
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* @exception StreamCorruptedException An invalid stream magic
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* number or stream version was read from the stream.
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*
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* @see #readStreamHeader()
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*/
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public ObjectInputStream (InputStream in)
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throws IOException, StreamCorruptedException
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{
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if (Configuration.DEBUG)
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{
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String val = System.getProperty("gcj.dumpobjects");
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if (dump == false && val != null && !val.equals(""))
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{
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dump = true;
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System.out.println ("Serialization debugging enabled");
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}
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else if (dump == true && (val == null || val.equals("")))
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{
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dump = false;
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System.out.println ("Serialization debugging disabled");
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}
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}
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this.resolveEnabled = false;
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this.isDeserializing = false;
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this.blockDataPosition = 0;
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this.blockDataBytes = 0;
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this.blockData = new byte[BUFFER_SIZE];
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this.blockDataInput = new DataInputStream (this);
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this.realInputStream = new DataInputStream (in);
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this.nextOID = baseWireHandle;
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this.objectLookupTable = new Hashtable ();
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this.validators = new Vector ();
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setBlockDataMode (true);
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readStreamHeader ();
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}
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/**
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* Returns the next deserialized object read from the underlying stream.
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*
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* This method can be overriden by a class by implementing
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* <code>private void readObject (ObjectInputStream)</code>.
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*
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* If an exception is thrown from this method, the stream is left in
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* an undefined state.
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*
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* @exception ClassNotFoundException The class that an object being
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* read in belongs to cannot be found.
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*
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* @exception IOException Exception from underlying
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* <code>InputStream</code>.
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*/
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public final Object readObject () throws ClassNotFoundException, IOException
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{
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if (this.useSubclassMethod)
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return readObjectOverride ();
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boolean was_deserializing;
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Object ret_val;
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was_deserializing = this.isDeserializing;
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boolean is_consumed = false;
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boolean old_mode = setBlockDataMode (false);
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this.isDeserializing = true;
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byte marker = this.realInputStream.readByte ();
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dumpElement ("MARKER: 0x" + Integer.toHexString(marker) + " ");
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try
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{
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switch (marker)
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{
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case TC_ENDBLOCKDATA:
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{
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ret_val = null;
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is_consumed = true;
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break;
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}
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case TC_BLOCKDATA:
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case TC_BLOCKDATALONG:
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{
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if (marker == TC_BLOCKDATALONG)
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dumpElementln ("BLOCKDATALONG");
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else
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dumpElementln ("BLOCKDATA");
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readNextBlock (marker);
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throw new StreamCorruptedException ("Unexpected blockData");
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}
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case TC_NULL:
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{
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dumpElementln ("NULL");
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ret_val = null;
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break;
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}
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case TC_REFERENCE:
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{
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dumpElement ("REFERENCE ");
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Integer oid = new Integer (this.realInputStream.readInt ());
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dumpElementln (Integer.toHexString(oid.intValue()));
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ret_val = ((ObjectIdentityWrapper)
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this.objectLookupTable.get (oid)).object;
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break;
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}
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case TC_CLASS:
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{
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dumpElementln ("CLASS");
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ObjectStreamClass osc = (ObjectStreamClass)readObject ();
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Class clazz = osc.forClass ();
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assignNewHandle (clazz);
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ret_val = clazz;
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break;
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}
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case TC_PROXYCLASSDESC:
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{
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dumpElementln ("PROXYCLASS");
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int n_intf = this.realInputStream.readInt();
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String[] intfs = new String[n_intf];
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for (int i = 0; i < n_intf; i++)
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{
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intfs[i] = this.realInputStream.readUTF();
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System.out.println(intfs[i]);
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}
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boolean oldmode = setBlockDataMode (true);
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Class cl = resolveProxyClass(intfs);
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setBlockDataMode(oldmode);
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ObjectStreamClass osc = lookupClass(cl);
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assignNewHandle (osc);
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if (!is_consumed)
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{
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byte b = this.realInputStream.readByte ();
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if (b != TC_ENDBLOCKDATA)
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throw new IOException ("Data annotated to class was not consumed." + b);
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}
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else
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is_consumed = false;
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ObjectStreamClass superosc = (ObjectStreamClass)readObject ();
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osc.setSuperclass (superosc);
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ret_val = osc;
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break;
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}
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case TC_CLASSDESC:
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{
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ObjectStreamClass osc = readClassDescriptor ();
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if (!is_consumed)
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{
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byte b = this.realInputStream.readByte ();
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if (b != TC_ENDBLOCKDATA)
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throw new IOException ("Data annotated to class was not consumed." + b);
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}
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else
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is_consumed = false;
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osc.setSuperclass ((ObjectStreamClass)readObject ());
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ret_val = osc;
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break;
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}
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case TC_STRING:
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case TC_LONGSTRING:
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{
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dumpElement ("STRING=");
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String s = this.realInputStream.readUTF ();
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dumpElementln (s);
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ret_val = processResolution (s, assignNewHandle (s));
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break;
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}
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case TC_ARRAY:
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{
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dumpElementln ("ARRAY");
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ObjectStreamClass osc = (ObjectStreamClass)readObject ();
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Class componentType = osc.forClass ().getComponentType ();
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dumpElement ("ARRAY LENGTH=");
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int length = this.realInputStream.readInt ();
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dumpElementln (length + "; COMPONENT TYPE=" + componentType);
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Object array = Array.newInstance (componentType, length);
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int handle = assignNewHandle (array);
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readArrayElements (array, componentType);
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for (int i=0, len=Array.getLength(array); i < len; i++)
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dumpElementln (" ELEMENT[" + i + "]=" + Array.get(array, i));
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ret_val = processResolution (array, handle);
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break;
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}
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case TC_OBJECT:
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{
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dumpElementln ("OBJECT");
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ObjectStreamClass osc = (ObjectStreamClass)readObject ();
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Class clazz = osc.forClass ();
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if (!Serializable.class.isAssignableFrom (clazz))
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throw new NotSerializableException (clazz + " is not Serializable, and thus cannot be deserialized.");
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if (Externalizable.class.isAssignableFrom (clazz))
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{
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Externalizable obj = null;
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try
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{
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obj = (Externalizable)clazz.newInstance ();
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}
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catch (InstantiationException e)
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{
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throw new ClassNotFoundException ("Instance of " + clazz
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+ " could not be created");
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}
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catch (IllegalAccessException e)
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{
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throw new ClassNotFoundException ("Instance of " + clazz
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+ " could not be created because class or zero-argument constructor is not accessible");
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}
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catch (NoSuchMethodError e)
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{
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throw new ClassNotFoundException ("Instance of " + clazz
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+ " could not be created because zero-argument constructor is not defined");
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}
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int handle = assignNewHandle (obj);
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boolean read_from_blocks = ((osc.getFlags () & SC_BLOCK_DATA) != 0);
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boolean oldmode = this.readDataFromBlock;
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if (read_from_blocks)
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setBlockDataMode (true);
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obj.readExternal (this);
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if (read_from_blocks)
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setBlockDataMode (oldmode);
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ret_val = processResolution (obj, handle);
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break;
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} // end if (Externalizable.class.isAssignableFrom (clazz))
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// find the first non-serializable, non-abstract
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// class in clazz's inheritance hierarchy
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Class first_nonserial = clazz.getSuperclass ();
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while (Serializable.class.isAssignableFrom (first_nonserial)
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|| Modifier.isAbstract (first_nonserial.getModifiers ()))
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first_nonserial = first_nonserial.getSuperclass ();
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Object obj = null;
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obj = newObject (clazz, first_nonserial);
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if (obj == null)
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throw new ClassNotFoundException ("Instance of " + clazz +
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" could not be created");
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int handle = assignNewHandle (obj);
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this.currentObject = obj;
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ObjectStreamClass[] hierarchy =
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inputGetObjectStreamClasses(clazz);
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for (int i=0; i < hierarchy.length; i++)
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{
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this.currentObjectStreamClass = hierarchy[i];
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dumpElementln ("Reading fields of "
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+ this.currentObjectStreamClass.getName ());
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// XXX: should initialize fields in classes in the hierarchy
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// that aren't in the stream
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// should skip over classes in the stream that aren't in the
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// real classes hierarchy
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if (this.currentObjectStreamClass.hasReadMethod())
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{
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fieldsAlreadyRead = false;
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boolean oldmode = setBlockDataMode (true);
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callReadMethod (obj, this.currentObjectStreamClass);
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setBlockDataMode (oldmode);
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dumpElement ("ENDBLOCKDATA? ");
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try
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{
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// FIXME: XXX: This try block is to catch EOF which is
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// thrown for some objects. That indicates a bug in the logic.
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if (this.realInputStream.readByte () != TC_ENDBLOCKDATA)
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throw new IOException ("No end of block data seen for class with readObject (ObjectInputStream) method.");
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dumpElementln ("yes");
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}
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catch (EOFException e)
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{
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dumpElementln ("no, got EOFException");
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}
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catch (IOException e)
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{
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dumpElementln ("no, got IOException");
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}
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}
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else
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{
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readFields (obj, currentObjectStreamClass);
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}
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}
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this.currentObject = null;
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this.currentObjectStreamClass = null;
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ret_val = processResolution (obj, handle);
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break;
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}
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case TC_RESET:
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dumpElementln ("RESET");
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clearHandles ();
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ret_val = readObject ();
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break;
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case TC_EXCEPTION:
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{
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dumpElement ("EXCEPTION=");
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Exception e = (Exception)readObject ();
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dumpElementln (e.toString());
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clearHandles ();
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throw new WriteAbortedException ("Exception thrown during writing of stream", e);
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}
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default:
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throw new IOException ("Unknown marker on stream: " + marker);
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}
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}
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finally
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{
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setBlockDataMode (old_mode);
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this.isDeserializing = was_deserializing;
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if (! was_deserializing)
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{
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if (validators.size () > 0)
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invokeValidators ();
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}
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}
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return ret_val;
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}
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protected ObjectStreamClass readClassDescriptor ()
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throws ClassNotFoundException, IOException
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{
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dumpElement ("CLASSDESC NAME=");
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String name = this.realInputStream.readUTF ();
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dumpElement (name + "; UID=");
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long uid = this.realInputStream.readLong ();
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dumpElement (Long.toHexString(uid) + "; FLAGS=");
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byte flags = this.realInputStream.readByte ();
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dumpElement (Integer.toHexString(flags) + "; FIELD COUNT=");
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short field_count = this.realInputStream.readShort ();
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dumpElementln (Short.toString(field_count));
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ObjectStreamField[] fields = new ObjectStreamField[field_count];
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ObjectStreamClass osc = new ObjectStreamClass (name, uid,
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flags, fields);
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assignNewHandle (osc);
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for (int i=0; i < field_count; i++)
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{
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dumpElement (" TYPE CODE=");
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char type_code = (char)this.realInputStream.readByte ();
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dumpElement (type_code + "; FIELD NAME=");
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String field_name = this.realInputStream.readUTF ();
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dumpElementln (field_name);
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String class_name;
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if (type_code == 'L' || type_code == '[')
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class_name = (String)readObject ();
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else
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class_name = String.valueOf (type_code);
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// There're many cases you can't get java.lang.Class from
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// typename if your context class loader can't load it,
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// then use typename to construct the field
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fields[i] =
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new ObjectStreamField (field_name, class_name);
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}
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Class clazz = resolveClass(osc);
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boolean oldmode = setBlockDataMode (true);
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osc.setClass (clazz, lookupClass(clazz.getSuperclass()));
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classLookupTable.put(clazz, osc);
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setBlockDataMode (oldmode);
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return osc;
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}
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/**
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* Reads the current objects non-transient, non-static fields from
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* the current class from the underlying output stream.
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*
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* This method is intended to be called from within a object's
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* <code>private void readObject (ObjectInputStream)</code>
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* method.
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*
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* @exception ClassNotFoundException The class that an object being
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* read in belongs to cannot be found.
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*
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* @exception NotActiveException This method was called from a
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* context other than from the current object's and current class's
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* <code>private void readObject (ObjectInputStream)</code>
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* method.
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*
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* @exception IOException Exception from underlying
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* <code>OutputStream</code>.
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*/
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public void defaultReadObject ()
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throws ClassNotFoundException, IOException, NotActiveException
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{
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if (this.currentObject == null || this.currentObjectStreamClass == null)
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throw new NotActiveException ("defaultReadObject called by non-active class and/or object");
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|
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if (fieldsAlreadyRead)
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throw new NotActiveException ("defaultReadObject called but fields already read from stream (by defaultReadObject or readFields)");
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|
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boolean oldmode = setBlockDataMode(false);
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readFields (this.currentObject, this.currentObjectStreamClass);
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setBlockDataMode(oldmode);
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fieldsAlreadyRead = true;
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}
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|
|
|
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/**
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* Registers a <code>ObjectInputValidation</code> to be carried out
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* on the object graph currently being deserialized before it is
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* returned to the original caller of <code>readObject ()</code>.
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* The order of validation for multiple
|
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* <code>ObjectInputValidation</code>s can be controled using
|
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* <code>priority</code>. Validators with higher priorities are
|
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* called first.
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*
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* @see java.io.ObjectInputValidation
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*
|
|
* @exception InvalidObjectException <code>validator</code> is
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* <code>null</code>
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|
*
|
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* @exception NotActiveException an attempt was made to add a
|
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* validator outside of the <code>readObject</code> method of the
|
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* object currently being deserialized
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*/
|
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public void registerValidation (ObjectInputValidation validator,
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int priority)
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throws InvalidObjectException, NotActiveException
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{
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if (this.currentObject == null || this.currentObjectStreamClass == null)
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throw new NotActiveException ("registerValidation called by non-active class and/or object");
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|
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if (validator == null)
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throw new InvalidObjectException ("attempt to add a null ObjectInputValidation object");
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|
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this.validators.addElement (new ValidatorAndPriority (validator,
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priority));
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}
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|
|
|
|
/**
|
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* Called when a class is being deserialized. This is a hook to
|
|
* allow subclasses to read in information written by the
|
|
* <code>annotateClass (Class)</code> method of an
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* <code>ObjectOutputStream</code>.
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*
|
|
* This implementation looks up the active call stack for a
|
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* <code>ClassLoader</code>; if a <code>ClassLoader</code> is found,
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* it is used to load the class associated with <code>osc</code>,
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* otherwise, the default system <code>ClassLoader</code> is used.
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*
|
|
* @exception IOException Exception from underlying
|
|
* <code>OutputStream</code>.
|
|
*
|
|
* @see java.io.ObjectOutputStream#annotateClass (java.lang.Class)
|
|
*/
|
|
protected Class resolveClass (ObjectStreamClass osc)
|
|
throws ClassNotFoundException, IOException
|
|
{
|
|
return Class.forName(osc.getName(), true, currentLoader());
|
|
}
|
|
|
|
private ClassLoader currentLoader()
|
|
{
|
|
SecurityManager sm = System.getSecurityManager ();
|
|
if (sm == null)
|
|
sm = new SecurityManager () {};
|
|
|
|
return currentClassLoader(sm);
|
|
}
|
|
|
|
/**
|
|
* Lookup a class stored in the local hashtable. If it is not
|
|
* use the global lookup function in ObjectStreamClass to build
|
|
* the ObjectStreamClass. This method is requested according to
|
|
* the behaviour detected in the JDK by Kaffe's team.
|
|
*
|
|
* @param clazz Class to lookup in the hash table or for which
|
|
* we must build a descriptor.
|
|
* @return A valid instance of ObjectStreamClass corresponding
|
|
* to the specified class.
|
|
*/
|
|
private ObjectStreamClass lookupClass (Class clazz)
|
|
{
|
|
ObjectStreamClass oclazz;
|
|
|
|
oclazz = (ObjectStreamClass) classLookupTable.get(clazz);
|
|
if (oclazz == null)
|
|
return ObjectStreamClass.lookup (clazz);
|
|
else
|
|
return oclazz;
|
|
}
|
|
|
|
/**
|
|
* Reconstruct class hierarchy the same way
|
|
* {@link java.io.ObjectStreamClass.getObjectStreamClasses(java.lang.Class)} does
|
|
* but using lookupClass instead of ObjectStreamClass.lookup. This
|
|
* dup is necessary localize the lookup table. Hopefully some future rewritings will
|
|
* be able to prevent this.
|
|
*
|
|
* @param clazz This is the class for which we want the hierarchy.
|
|
*
|
|
* @return An array of valid {@link java.io.ObjectStreamClass} instances which
|
|
* represent the class hierarchy for clazz.
|
|
*/
|
|
private ObjectStreamClass[] inputGetObjectStreamClasses (Class clazz)
|
|
{
|
|
ObjectStreamClass osc = lookupClass (clazz);
|
|
|
|
ObjectStreamClass[] ret_val;
|
|
|
|
if (osc == null)
|
|
return new ObjectStreamClass[0];
|
|
else
|
|
{
|
|
Vector oscs = new Vector();
|
|
|
|
while (osc != null)
|
|
{
|
|
oscs.addElement(osc);
|
|
osc = osc.getSuper();
|
|
}
|
|
|
|
int count = oscs.size();
|
|
ObjectStreamClass[] sorted_oscs = new ObjectStreamClass[count];
|
|
|
|
for (int i = count - 1; i >= 0; i--)
|
|
sorted_oscs[count - i - 1] = (ObjectStreamClass) oscs.elementAt(i);
|
|
|
|
return sorted_oscs;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Allows subclasses to resolve objects that are read from the
|
|
* stream with other objects to be returned in their place. This
|
|
* method is called the first time each object is encountered.
|
|
*
|
|
* This method must be enabled before it will be called in the
|
|
* serialization process.
|
|
*
|
|
* @exception IOException Exception from underlying
|
|
* <code>OutputStream</code>.
|
|
*
|
|
* @see #enableResolveObject(boolean)
|
|
*/
|
|
protected Object resolveObject (Object obj) throws IOException
|
|
{
|
|
return obj;
|
|
}
|
|
|
|
|
|
protected Class resolveProxyClass (String[] intfs)
|
|
throws IOException, ClassNotFoundException
|
|
{
|
|
SecurityManager sm = System.getSecurityManager ();
|
|
|
|
if (sm == null)
|
|
sm = new SecurityManager () {};
|
|
|
|
ClassLoader cl = currentClassLoader (sm);
|
|
|
|
Class[] clss = new Class[intfs.length];
|
|
if(cl == null){
|
|
for (int i = 0; i < intfs.length; i++)
|
|
clss[i] = Class.forName(intfs[i]);
|
|
cl = ClassLoader.getSystemClassLoader();
|
|
}
|
|
else
|
|
for (int i = 0; i < intfs.length; i++)
|
|
clss[i] = cl.loadClass(intfs[i]);
|
|
try {
|
|
return Proxy.getProxyClass(cl, clss);
|
|
} catch (IllegalArgumentException e) {
|
|
throw new ClassNotFoundException(null, e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* If <code>enable</code> is <code>true</code> and this object is
|
|
* trusted, then <code>resolveObject (Object)</code> will be called
|
|
* in subsequent calls to <code>readObject (Object)</code>.
|
|
* Otherwise, <code>resolveObject (Object)</code> will not be called.
|
|
*
|
|
* @exception SecurityException This class is not trusted.
|
|
*/
|
|
protected boolean enableResolveObject (boolean enable)
|
|
throws SecurityException
|
|
{
|
|
if (enable)
|
|
{
|
|
SecurityManager sm = System.getSecurityManager ();
|
|
if (sm != null)
|
|
sm.checkPermission (new SerializablePermission ("enableSubstitution"));
|
|
}
|
|
|
|
boolean old_val = this.resolveEnabled;
|
|
this.resolveEnabled = enable;
|
|
return old_val;
|
|
}
|
|
|
|
/**
|
|
* Reads stream magic and stream version information from the
|
|
* underlying stream.
|
|
*
|
|
* @exception IOException Exception from underlying stream.
|
|
*
|
|
* @exception StreamCorruptedException An invalid stream magic
|
|
* number or stream version was read from the stream.
|
|
*/
|
|
protected void readStreamHeader ()
|
|
throws IOException, StreamCorruptedException
|
|
{
|
|
dumpElement ("STREAM MAGIC ");
|
|
if (this.realInputStream.readShort () != STREAM_MAGIC)
|
|
throw new StreamCorruptedException ("Invalid stream magic number");
|
|
|
|
dumpElementln ("STREAM VERSION ");
|
|
if (this.realInputStream.readShort () != STREAM_VERSION)
|
|
throw new StreamCorruptedException ("Invalid stream version number");
|
|
}
|
|
|
|
public int read () throws IOException
|
|
{
|
|
if (this.readDataFromBlock)
|
|
{
|
|
if (this.blockDataPosition >= this.blockDataBytes)
|
|
readNextBlock ();
|
|
return (this.blockData[this.blockDataPosition++] & 0xff);
|
|
}
|
|
else
|
|
return this.realInputStream.read ();
|
|
}
|
|
|
|
public int read (byte[] data, int offset, int length) throws IOException
|
|
{
|
|
if (this.readDataFromBlock)
|
|
{
|
|
if (this.blockDataPosition + length > this.blockDataBytes)
|
|
{
|
|
int remain = this.blockDataBytes - this.blockDataPosition;
|
|
if (remain != 0)
|
|
{
|
|
System.arraycopy (this.blockData, this.blockDataPosition,
|
|
data, offset, remain);
|
|
offset += remain;
|
|
length -= remain;
|
|
}
|
|
readNextBlock ();
|
|
}
|
|
|
|
System.arraycopy (this.blockData, this.blockDataPosition,
|
|
data, offset, length);
|
|
this.blockDataPosition += length;
|
|
|
|
return length;
|
|
}
|
|
else
|
|
return this.realInputStream.read (data, offset, length);
|
|
}
|
|
|
|
public int available () throws IOException
|
|
{
|
|
if (this.readDataFromBlock)
|
|
{
|
|
if (this.blockDataPosition >= this.blockDataBytes)
|
|
readNextBlock ();
|
|
|
|
return this.blockDataBytes - this.blockDataPosition;
|
|
}
|
|
else
|
|
return this.realInputStream.available ();
|
|
}
|
|
|
|
public void close () throws IOException
|
|
{
|
|
this.realInputStream.close ();
|
|
}
|
|
|
|
public boolean readBoolean () throws IOException
|
|
{
|
|
return this.dataInputStream.readBoolean ();
|
|
}
|
|
|
|
public byte readByte () throws IOException
|
|
{
|
|
return this.dataInputStream.readByte ();
|
|
}
|
|
|
|
public int readUnsignedByte () throws IOException
|
|
{
|
|
return this.dataInputStream.readUnsignedByte ();
|
|
}
|
|
|
|
public short readShort () throws IOException
|
|
{
|
|
return this.dataInputStream.readShort ();
|
|
}
|
|
|
|
public int readUnsignedShort () throws IOException
|
|
{
|
|
return this.dataInputStream.readUnsignedShort ();
|
|
}
|
|
|
|
public char readChar () throws IOException
|
|
{
|
|
return this.dataInputStream.readChar ();
|
|
}
|
|
|
|
public int readInt () throws IOException
|
|
{
|
|
return this.dataInputStream.readInt ();
|
|
}
|
|
|
|
public long readLong () throws IOException
|
|
{
|
|
return this.dataInputStream.readLong ();
|
|
}
|
|
|
|
public float readFloat () throws IOException
|
|
{
|
|
return this.dataInputStream.readFloat ();
|
|
}
|
|
|
|
public double readDouble () throws IOException
|
|
{
|
|
return this.dataInputStream.readDouble ();
|
|
}
|
|
|
|
public void readFully (byte data[]) throws IOException
|
|
{
|
|
this.dataInputStream.readFully (data);
|
|
}
|
|
|
|
public void readFully (byte data[], int offset, int size)
|
|
throws IOException
|
|
{
|
|
this.dataInputStream.readFully (data, offset, size);
|
|
}
|
|
|
|
public int skipBytes (int len) throws IOException
|
|
{
|
|
return this.dataInputStream.skipBytes (len);
|
|
}
|
|
|
|
/**
|
|
* @deprecated
|
|
* @see java.io.DataInputStream#readLine ()
|
|
*/
|
|
public String readLine () throws IOException
|
|
{
|
|
return this.dataInputStream.readLine ();
|
|
}
|
|
|
|
public String readUTF () throws IOException
|
|
{
|
|
return this.dataInputStream.readUTF ();
|
|
}
|
|
|
|
/**
|
|
* This class allows a class to specify exactly which fields should
|
|
* be read, and what values should be read for these fields.
|
|
*
|
|
* XXX: finish up comments
|
|
*/
|
|
public static abstract class GetField
|
|
{
|
|
public abstract ObjectStreamClass getObjectStreamClass ();
|
|
|
|
public abstract boolean defaulted (String name)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract boolean get (String name, boolean defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract char get (String name, char defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract byte get (String name, byte defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract short get (String name, short defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract int get (String name, int defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract long get (String name, long defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract float get (String name, float defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract double get (String name, double defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
|
|
public abstract Object get (String name, Object defvalue)
|
|
throws IOException, IllegalArgumentException;
|
|
}
|
|
|
|
public GetField readFields ()
|
|
throws IOException, ClassNotFoundException, NotActiveException
|
|
{
|
|
if (this.currentObject == null || this.currentObjectStreamClass == null)
|
|
throw new NotActiveException ("readFields called by non-active class and/or object");
|
|
|
|
if (fieldsAlreadyRead)
|
|
throw new NotActiveException ("readFields called but fields already read from stream (by defaultReadObject or readFields)");
|
|
|
|
final ObjectStreamClass clazz = this.currentObjectStreamClass;
|
|
final byte[] prim_field_data = new byte[clazz.primFieldSize];
|
|
final Object[] objs = new Object[clazz.objectFieldCount];
|
|
|
|
// Apparently Block data is not used with GetField as per
|
|
// empirical evidence against JDK 1.2. Also see Mauve test
|
|
// java.io.ObjectInputOutput.Test.GetPutField.
|
|
boolean oldmode = setBlockDataMode (false);
|
|
readFully (prim_field_data);
|
|
for (int i = 0; i < objs.length; ++ i)
|
|
objs[i] = readObject ();
|
|
setBlockDataMode (oldmode);
|
|
|
|
return new GetField ()
|
|
{
|
|
public ObjectStreamClass getObjectStreamClass ()
|
|
{
|
|
return clazz;
|
|
}
|
|
|
|
public boolean defaulted (String name)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
return clazz.getField (name) == null;
|
|
}
|
|
|
|
public boolean get (String name, boolean defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = getField (name, Boolean.TYPE);
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
return prim_field_data[field.getOffset ()] == 0 ? false : true;
|
|
}
|
|
|
|
public char get (String name, char defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = getField (name, Character.TYPE);
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
int off = field.getOffset ();
|
|
|
|
return (char)(((prim_field_data[off++] & 0xFF) << 8)
|
|
| (prim_field_data[off] & 0xFF));
|
|
}
|
|
|
|
public byte get (String name, byte defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = getField (name, Byte.TYPE);
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
return prim_field_data[field.getOffset ()];
|
|
}
|
|
|
|
public short get (String name, short defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = getField (name, Short.TYPE);
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
int off = field.getOffset ();
|
|
|
|
return (short)(((prim_field_data[off++] & 0xFF) << 8)
|
|
| (prim_field_data[off] & 0xFF));
|
|
}
|
|
|
|
public int get (String name, int defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = getField (name, Integer.TYPE);
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
int off = field.getOffset ();
|
|
|
|
return ((prim_field_data[off++] & 0xFF) << 24)
|
|
| ((prim_field_data[off++] & 0xFF) << 16)
|
|
| ((prim_field_data[off++] & 0xFF) << 8)
|
|
| (prim_field_data[off] & 0xFF);
|
|
}
|
|
|
|
public long get (String name, long defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = getField (name, Long.TYPE);
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
int off = field.getOffset ();
|
|
|
|
return (long)(((prim_field_data[off++] & 0xFF) << 56)
|
|
| ((prim_field_data[off++] & 0xFF) << 48)
|
|
| ((prim_field_data[off++] & 0xFF) << 40)
|
|
| ((prim_field_data[off++] & 0xFF) << 32)
|
|
| ((prim_field_data[off++] & 0xFF) << 24)
|
|
| ((prim_field_data[off++] & 0xFF) << 16)
|
|
| ((prim_field_data[off++] & 0xFF) << 8)
|
|
| (prim_field_data[off] & 0xFF));
|
|
}
|
|
|
|
public float get (String name, float defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = getField (name, Float.TYPE);
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
int off = field.getOffset ();
|
|
|
|
return Float.intBitsToFloat (((prim_field_data[off++] & 0xFF) << 24)
|
|
| ((prim_field_data[off++] & 0xFF) << 16)
|
|
| ((prim_field_data[off++] & 0xFF) << 8)
|
|
| (prim_field_data[off] & 0xFF));
|
|
}
|
|
|
|
public double get (String name, double defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = getField (name, Double.TYPE);
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
int off = field.getOffset ();
|
|
|
|
return Double.longBitsToDouble
|
|
( (long) (((prim_field_data[off++] & 0xFF) << 56)
|
|
| ((prim_field_data[off++] & 0xFF) << 48)
|
|
| ((prim_field_data[off++] & 0xFF) << 40)
|
|
| ((prim_field_data[off++] & 0xFF) << 32)
|
|
| ((prim_field_data[off++] & 0xFF) << 24)
|
|
| ((prim_field_data[off++] & 0xFF) << 16)
|
|
| ((prim_field_data[off++] & 0xFF) << 8)
|
|
| (prim_field_data[off] & 0xFF)));
|
|
}
|
|
|
|
public Object get (String name, Object defvalue)
|
|
throws IOException, IllegalArgumentException
|
|
{
|
|
ObjectStreamField field =
|
|
getField (name, defvalue == null ? null : defvalue.getClass ());
|
|
|
|
if (field == null)
|
|
return defvalue;
|
|
|
|
return objs[field.getOffset ()];
|
|
}
|
|
|
|
private ObjectStreamField getField (String name, Class type)
|
|
throws IllegalArgumentException
|
|
{
|
|
ObjectStreamField field = clazz.getField (name);
|
|
|
|
if (field == null)
|
|
return null;
|
|
|
|
Class field_type = field.getType ();
|
|
|
|
if (type == field_type ||
|
|
(type == null && ! field_type.isPrimitive ()))
|
|
return field;
|
|
|
|
throw new IllegalArgumentException ("Field requested is of type "
|
|
+ field_type.getName ()
|
|
+ ", but requested type was "
|
|
+ (type == null ?
|
|
"Object" : type.getName ()));
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
/**
|
|
* Protected constructor that allows subclasses to override
|
|
* deserialization. This constructor should be called by subclasses
|
|
* that wish to override <code>readObject (Object)</code>. This
|
|
* method does a security check <i>NOTE: currently not
|
|
* implemented</i>, then sets a flag that informs
|
|
* <code>readObject (Object)</code> to call the subclasses
|
|
* <code>readObjectOverride (Object)</code> method.
|
|
*
|
|
* @see #readObjectOverride()
|
|
*/
|
|
protected ObjectInputStream ()
|
|
throws IOException, SecurityException
|
|
{
|
|
SecurityManager sec_man = System.getSecurityManager ();
|
|
if (sec_man != null)
|
|
sec_man.checkPermission (SUBCLASS_IMPLEMENTATION_PERMISSION);
|
|
this.useSubclassMethod = true;
|
|
}
|
|
|
|
/**
|
|
* This method allows subclasses to override the default
|
|
* de serialization mechanism provided by
|
|
* <code>ObjectInputStream</code>. To make this method be used for
|
|
* writing objects, subclasses must invoke the 0-argument
|
|
* constructor on this class from their constructor.
|
|
*
|
|
* @see #ObjectInputStream()
|
|
*/
|
|
protected Object readObjectOverride ()
|
|
throws ClassNotFoundException, IOException, OptionalDataException
|
|
{
|
|
throw new IOException ("Subclass of ObjectInputStream must implement readObjectOverride");
|
|
}
|
|
|
|
/**
|
|
* Assigns the next available handle to <code>obj</code>.
|
|
*
|
|
* @param obj The object for which we want a new handle.
|
|
* @return A valid handle for the specified object.
|
|
*/
|
|
private int assignNewHandle (Object obj)
|
|
{
|
|
this.objectLookupTable.put (new Integer (this.nextOID),
|
|
new ObjectIdentityWrapper (obj));
|
|
return this.nextOID++;
|
|
}
|
|
|
|
private Object processResolution (Object obj, int handle)
|
|
throws IOException
|
|
{
|
|
if (obj instanceof Serializable)
|
|
{
|
|
Method m = null;
|
|
try
|
|
{
|
|
Class classArgs[] = {};
|
|
m = getMethod(obj.getClass(), "readResolve", classArgs);
|
|
obj = m.invoke (obj, new Object[] {});
|
|
}
|
|
catch (NoSuchMethodException ignore)
|
|
{
|
|
}
|
|
catch (IllegalAccessException ignore)
|
|
{
|
|
}
|
|
catch (InvocationTargetException ignore)
|
|
{
|
|
}
|
|
}
|
|
|
|
if (this.resolveEnabled)
|
|
obj = resolveObject (obj);
|
|
|
|
this.objectLookupTable.put (new Integer (handle),
|
|
new ObjectIdentityWrapper (obj));
|
|
|
|
return obj;
|
|
}
|
|
|
|
private void clearHandles ()
|
|
{
|
|
this.objectLookupTable.clear ();
|
|
this.nextOID = baseWireHandle;
|
|
}
|
|
|
|
private void readNextBlock () throws IOException
|
|
{
|
|
readNextBlock (this.realInputStream.readByte ());
|
|
}
|
|
|
|
private void readNextBlock (byte marker) throws IOException
|
|
{
|
|
if (marker == TC_BLOCKDATA)
|
|
{
|
|
dumpElement ("BLOCK DATA SIZE=");
|
|
this.blockDataBytes = this.realInputStream.readUnsignedByte ();
|
|
dumpElementln (Integer.toString(this.blockDataBytes));
|
|
}
|
|
else if (marker == TC_BLOCKDATALONG)
|
|
{
|
|
dumpElement ("BLOCK DATA LONG SIZE=");
|
|
this.blockDataBytes = this.realInputStream.readInt ();
|
|
dumpElementln (Integer.toString(this.blockDataBytes));
|
|
}
|
|
else
|
|
{
|
|
throw new EOFException ("Attempt to read primitive data, but no data block is active.");
|
|
}
|
|
|
|
if (this.blockData.length < this.blockDataBytes)
|
|
this.blockData = new byte[this.blockDataBytes];
|
|
|
|
this.realInputStream.readFully (this.blockData, 0, this.blockDataBytes);
|
|
this.blockDataPosition = 0;
|
|
}
|
|
|
|
private void readArrayElements (Object array, Class clazz)
|
|
throws ClassNotFoundException, IOException
|
|
{
|
|
if (clazz.isPrimitive ())
|
|
{
|
|
if (clazz == Boolean.TYPE)
|
|
{
|
|
boolean[] cast_array = (boolean[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = this.realInputStream.readBoolean ();
|
|
return;
|
|
}
|
|
if (clazz == Byte.TYPE)
|
|
{
|
|
byte[] cast_array = (byte[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = this.realInputStream.readByte ();
|
|
return;
|
|
}
|
|
if (clazz == Character.TYPE)
|
|
{
|
|
char[] cast_array = (char[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = this.realInputStream.readChar ();
|
|
return;
|
|
}
|
|
if (clazz == Double.TYPE)
|
|
{
|
|
double[] cast_array = (double[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = this.realInputStream.readDouble ();
|
|
return;
|
|
}
|
|
if (clazz == Float.TYPE)
|
|
{
|
|
float[] cast_array = (float[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = this.realInputStream.readFloat ();
|
|
return;
|
|
}
|
|
if (clazz == Integer.TYPE)
|
|
{
|
|
int[] cast_array = (int[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = this.realInputStream.readInt ();
|
|
return;
|
|
}
|
|
if (clazz == Long.TYPE)
|
|
{
|
|
long[] cast_array = (long[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = this.realInputStream.readLong ();
|
|
return;
|
|
}
|
|
if (clazz == Short.TYPE)
|
|
{
|
|
short[] cast_array = (short[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = this.realInputStream.readShort ();
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Object[] cast_array = (Object[])array;
|
|
for (int i=0; i < cast_array.length; i++)
|
|
cast_array[i] = readObject ();
|
|
}
|
|
}
|
|
|
|
private void readFields (Object obj, ObjectStreamClass stream_osc)
|
|
throws ClassNotFoundException, IOException
|
|
{
|
|
ObjectStreamField[] stream_fields = stream_osc.fields;
|
|
ObjectStreamField[] real_fields =
|
|
lookupClass(stream_osc.forClass()).fields;
|
|
|
|
boolean default_initialize, set_value;
|
|
String field_name = null;
|
|
Class type = null;
|
|
ObjectStreamField stream_field = null;
|
|
ObjectStreamField real_field = null;
|
|
int stream_idx = 0;
|
|
int real_idx = 0;
|
|
|
|
while (stream_idx < stream_fields.length
|
|
&& real_idx < real_fields.length)
|
|
{
|
|
default_initialize = false;
|
|
set_value = true;
|
|
|
|
if (stream_idx == stream_fields.length)
|
|
default_initialize = true;
|
|
else
|
|
{
|
|
stream_field = stream_fields[stream_idx];
|
|
type = stream_field.getType ();
|
|
}
|
|
|
|
if (real_idx == real_fields.length)
|
|
set_value = false;
|
|
else
|
|
{
|
|
real_field = real_fields[real_idx];
|
|
type = real_field.getType ();
|
|
field_name = real_field.getName ();
|
|
}
|
|
|
|
if (set_value && !default_initialize)
|
|
{
|
|
int comp_val =
|
|
real_field.compareTo (stream_field);
|
|
|
|
if (comp_val < 0)
|
|
{
|
|
default_initialize = true;
|
|
real_idx++;
|
|
}
|
|
else if (comp_val > 0)
|
|
{
|
|
set_value = false;
|
|
stream_idx++;
|
|
}
|
|
else
|
|
{
|
|
real_idx++;
|
|
stream_idx++;
|
|
}
|
|
}
|
|
|
|
try
|
|
{
|
|
if (type == Boolean.TYPE)
|
|
{
|
|
boolean value =
|
|
default_initialize ? false : this.realInputStream.readBoolean ();
|
|
if (!default_initialize && set_value)
|
|
dumpElementln (" " + field_name + ": " + value);
|
|
if (set_value)
|
|
setBooleanField (obj, stream_osc.forClass (), field_name, value);
|
|
}
|
|
else if (type == Byte.TYPE)
|
|
{
|
|
byte value =
|
|
default_initialize ? 0 : this.realInputStream.readByte ();
|
|
if (!default_initialize && set_value)
|
|
dumpElementln (" " + field_name + ": " + value);
|
|
if (set_value)
|
|
setByteField (obj, stream_osc.forClass (), field_name, value);
|
|
}
|
|
else if (type == Character.TYPE)
|
|
{
|
|
char value =
|
|
default_initialize ? (char)0 : this.realInputStream.readChar ();
|
|
if (!default_initialize && set_value)
|
|
dumpElementln (" " + field_name + ": " + value);
|
|
if (set_value)
|
|
setCharField (obj, stream_osc.forClass (), field_name, value);
|
|
}
|
|
else if (type == Double.TYPE)
|
|
{
|
|
double value =
|
|
default_initialize ? 0 : this.realInputStream.readDouble ();
|
|
if (!default_initialize && set_value)
|
|
dumpElementln (" " + field_name + ": " + value);
|
|
if (set_value)
|
|
setDoubleField (obj, stream_osc.forClass (), field_name, value);
|
|
}
|
|
else if (type == Float.TYPE)
|
|
{
|
|
float value =
|
|
default_initialize ? 0 : this.realInputStream.readFloat ();
|
|
if (!default_initialize && set_value)
|
|
dumpElementln (" " + field_name + ": " + value);
|
|
if (set_value)
|
|
setFloatField (obj, stream_osc.forClass (), field_name, value);
|
|
}
|
|
else if (type == Integer.TYPE)
|
|
{
|
|
int value =
|
|
default_initialize ? 0 : this.realInputStream.readInt ();
|
|
if (!default_initialize && set_value)
|
|
dumpElementln (" " + field_name + ": " + value);
|
|
if (set_value)
|
|
setIntField (obj, stream_osc.forClass (), field_name, value);
|
|
}
|
|
else if (type == Long.TYPE)
|
|
{
|
|
long value =
|
|
default_initialize ? 0 : this.realInputStream.readLong ();
|
|
if (!default_initialize && set_value)
|
|
dumpElementln (" " + field_name + ": " + value);
|
|
if (set_value)
|
|
setLongField (obj, stream_osc.forClass (), field_name, value);
|
|
}
|
|
else if (type == Short.TYPE)
|
|
{
|
|
short value =
|
|
default_initialize ? (short)0 : this.realInputStream.readShort ();
|
|
if (!default_initialize && set_value)
|
|
dumpElementln (" " + field_name + ": " + value);
|
|
if (set_value)
|
|
setShortField (obj, stream_osc.forClass (), field_name, value);
|
|
}
|
|
else
|
|
{
|
|
Object value =
|
|
default_initialize ? null : readObject ();
|
|
if (set_value)
|
|
setObjectField (obj, stream_osc.forClass (), field_name,
|
|
real_field.getTypeString (), value);
|
|
}
|
|
}
|
|
catch (NoSuchFieldError e)
|
|
{
|
|
dumpElementln("XXXX " + field_name + " does not exist.");
|
|
}
|
|
}
|
|
}
|
|
|
|
// Toggles writing primitive data to block-data buffer.
|
|
private boolean setBlockDataMode (boolean on)
|
|
{
|
|
boolean oldmode = this.readDataFromBlock;
|
|
this.readDataFromBlock = on;
|
|
|
|
if (on)
|
|
this.dataInputStream = this.blockDataInput;
|
|
else
|
|
this.dataInputStream = this.realInputStream;
|
|
return oldmode;
|
|
}
|
|
|
|
// returns a new instance of REAL_CLASS that has been constructed
|
|
// only to the level of CONSTRUCTOR_CLASS (a super class of REAL_CLASS)
|
|
private Object newObject (Class real_class, Class constructor_class)
|
|
{
|
|
try
|
|
{
|
|
Object obj = allocateObject (real_class);
|
|
callConstructor (constructor_class, obj);
|
|
return obj;
|
|
}
|
|
catch (InstantiationException e)
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
// runs all registered ObjectInputValidations in prioritized order
|
|
// on OBJ
|
|
private void invokeValidators () throws InvalidObjectException
|
|
{
|
|
Object[] validators = new Object[this.validators.size ()];
|
|
this.validators.copyInto (validators);
|
|
Arrays.sort (validators);
|
|
|
|
try
|
|
{
|
|
for (int i=0; i < validators.length; i++)
|
|
((ObjectInputValidation)validators[i]).validateObject ();
|
|
}
|
|
finally
|
|
{
|
|
this.validators.removeAllElements ();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This native method is used to get access to the protected method
|
|
* of the same name in SecurityManger.
|
|
*
|
|
* @param sm SecurityManager instance which should be called.
|
|
* @return The current class loader in the calling stack.
|
|
*/
|
|
private static ClassLoader currentClassLoader (SecurityManager sm)
|
|
{
|
|
// FIXME: This is too simple.
|
|
return ClassLoader.getSystemClassLoader ();
|
|
}
|
|
|
|
private static Field getField (Class klass, String name)
|
|
throws java.lang.NoSuchFieldException
|
|
{
|
|
final Field f = klass.getDeclaredField(name);
|
|
AccessController.doPrivileged(new PrivilegedAction()
|
|
{
|
|
public Object run()
|
|
{
|
|
f.setAccessible(true);
|
|
return null;
|
|
}
|
|
});
|
|
return f;
|
|
}
|
|
|
|
private static Method getMethod (Class klass, String name, Class args[])
|
|
throws java.lang.NoSuchMethodException
|
|
{
|
|
final Method m = klass.getDeclaredMethod(name, args);
|
|
AccessController.doPrivileged(new PrivilegedAction()
|
|
{
|
|
public Object run()
|
|
{
|
|
m.setAccessible(true);
|
|
return null;
|
|
}
|
|
});
|
|
return m;
|
|
}
|
|
|
|
private void callReadMethod (Object obj, ObjectStreamClass osc) throws IOException
|
|
{
|
|
Class klass = osc.forClass();
|
|
try
|
|
{
|
|
Class classArgs[] = {ObjectInputStream.class};
|
|
Method m = getMethod (klass, "readObject", classArgs);
|
|
Object args[] = {this};
|
|
m.invoke (obj, args);
|
|
}
|
|
catch (NoSuchMethodException nsme)
|
|
{
|
|
// Nothing.
|
|
}
|
|
catch (InvocationTargetException x)
|
|
{
|
|
/* Rethrow if possible. */
|
|
Throwable exception = x.getTargetException();
|
|
if (exception instanceof RuntimeException)
|
|
throw (RuntimeException) exception;
|
|
if (exception instanceof IOException)
|
|
throw (IOException) exception;
|
|
|
|
throw new IOException ("Exception thrown from readObject() on " +
|
|
klass + ": " + exception.getClass().getName());
|
|
}
|
|
catch (Exception x)
|
|
{
|
|
throw new IOException ("Failure invoking readObject() on " +
|
|
klass + ": " + x.getClass().getName());
|
|
}
|
|
}
|
|
|
|
private native Object allocateObject (Class clazz)
|
|
throws InstantiationException;
|
|
|
|
private native void callConstructor (Class clazz, Object obj);
|
|
|
|
/**
|
|
* This method writes a "boolean" value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The boolean value to write into the field.
|
|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setBooleanField (Object obj, Class klass, String field_name,
|
|
boolean val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
f.setBoolean (obj, val);
|
|
}
|
|
catch (IllegalArgumentException _)
|
|
{
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
}
|
|
catch (Exception _)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method writes a "byte" value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The byte value to write into the field.
|
|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setByteField (Object obj, Class klass, String field_name,
|
|
byte val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
f.setByte (obj, val);
|
|
}
|
|
catch (IllegalArgumentException _)
|
|
{
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
}
|
|
catch (Exception _)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method writes a "character" value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The character value to write into the field.
|
|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setCharField (Object obj, Class klass, String field_name,
|
|
char val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
f.setChar (obj, val);
|
|
}
|
|
catch (IllegalArgumentException _)
|
|
{
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
}
|
|
catch (Exception _)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method writes a "double" value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The double value to write into the field.
|
|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setDoubleField (Object obj, Class klass, String field_name,
|
|
double val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
f.setDouble (obj, val);
|
|
}
|
|
catch (IllegalArgumentException _)
|
|
{
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
}
|
|
catch (Exception _)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method writes a "float" value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The float value to write into the field.
|
|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setFloatField (Object obj, Class klass, String field_name,
|
|
float val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
f.setFloat (obj, val);
|
|
}
|
|
catch (IllegalArgumentException _)
|
|
{
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
}
|
|
catch (Exception _)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method writes an "integer" value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The integer value to write into the field.
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|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setIntField (Object obj, Class klass, String field_name,
|
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int val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
f.setInt (obj, val);
|
|
}
|
|
catch (IllegalArgumentException _)
|
|
{
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
}
|
|
catch (Exception _)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method writes the long value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The long value to write into the field.
|
|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setLongField (Object obj, Class klass, String field_name,
|
|
long val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
f.setLong (obj, val);
|
|
}
|
|
catch (IllegalArgumentException _)
|
|
{
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
}
|
|
catch (Exception _)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method writes a "short" value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The short value to write into the field.
|
|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setShortField (Object obj, Class klass, String field_name,
|
|
short val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
f.setShort (obj, val);
|
|
}
|
|
catch (IllegalArgumentException _)
|
|
{
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
}
|
|
catch (Exception _)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method writes an "object" value <code>val</code> in the specified field
|
|
* of the instance <code>obj</code> of the type <code>klass</code>.
|
|
*
|
|
* @param obj Instance to setup.
|
|
* @param klass Class type of the specified instance.
|
|
* @param field_name Name of the field in the specified class type.
|
|
* @param val The "object" value to write into the field.
|
|
* @throws InvalidClassException if the specified field has not the required type.
|
|
* @throws IOException if there is no field of that name in the specified class.
|
|
*/
|
|
private void setObjectField (Object obj, Class klass, String field_name,
|
|
String type_code, Object val) throws IOException, InvalidClassException
|
|
{
|
|
try
|
|
{
|
|
Field f = getField (klass, field_name);
|
|
ObjectStreamField of = new ObjectStreamField(field_name, f.getType());
|
|
|
|
if (of.getTypeString() == null ||
|
|
!of.getTypeString().equals(type_code))
|
|
throw new InvalidClassException("incompatible field type for " + klass.getName() + "." + field_name);
|
|
f.set (obj, val);
|
|
}
|
|
catch (InvalidClassException e)
|
|
{
|
|
throw e;
|
|
}
|
|
catch (Exception _)
|
|
{}
|
|
}
|
|
|
|
private static final int BUFFER_SIZE = 1024;
|
|
private static final Class[] readObjectParams = { ObjectInputStream.class };
|
|
|
|
private DataInputStream realInputStream;
|
|
private DataInputStream dataInputStream;
|
|
private DataInputStream blockDataInput;
|
|
private int blockDataPosition;
|
|
private int blockDataBytes;
|
|
private byte[] blockData;
|
|
private boolean useSubclassMethod;
|
|
private int nextOID;
|
|
private boolean resolveEnabled;
|
|
private Hashtable objectLookupTable;
|
|
private Object currentObject;
|
|
private ObjectStreamClass currentObjectStreamClass;
|
|
private boolean readDataFromBlock;
|
|
private boolean isDeserializing;
|
|
private boolean fieldsAlreadyRead;
|
|
private Vector validators;
|
|
private Hashtable classLookupTable;
|
|
|
|
private static boolean dump;
|
|
|
|
private void dumpElement (String msg)
|
|
{
|
|
if (Configuration.DEBUG && dump)
|
|
System.out.print(msg);
|
|
}
|
|
|
|
private void dumpElementln (String msg)
|
|
{
|
|
if (Configuration.DEBUG && dump)
|
|
System.out.println(msg);
|
|
}
|
|
|
|
static
|
|
{
|
|
if (Configuration.INIT_LOAD_LIBRARY)
|
|
{
|
|
System.loadLibrary ("javaio");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// used to keep a prioritized list of object validators
|
|
class ValidatorAndPriority implements Comparable
|
|
{
|
|
int priority;
|
|
ObjectInputValidation validator;
|
|
|
|
ValidatorAndPriority (ObjectInputValidation validator, int priority)
|
|
{
|
|
this.priority = priority;
|
|
this.validator = validator;
|
|
}
|
|
|
|
public int compareTo (Object o)
|
|
{
|
|
ValidatorAndPriority vap = (ValidatorAndPriority)o;
|
|
return this.priority - vap.priority;
|
|
}
|
|
}
|