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jlechner |
/* ObjectInputStream.java -- Class used to read serialized objects
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2005
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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., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 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 gnu.java.io.ObjectIdentityWrapper;
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import java.lang.reflect.Array;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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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.Proxy;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import java.util.Arrays;
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import java.util.Hashtable;
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import java.util.Iterator;
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import java.util.TreeSet;
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import java.util.Vector;
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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 (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.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.classLookupTable = new Hashtable();
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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. This method can also throw Errors and
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* RuntimeExceptions if caused by existing readResolve() user code.
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*
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* @return The object read from the underlying stream.
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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()
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throws ClassNotFoundException, IOException
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{
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if (this.useSubclassMethod)
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return readObjectOverride();
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Object ret_val;
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boolean old_mode = setBlockDataMode(false);
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byte marker = this.realInputStream.readByte();
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if (DEBUG)
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depth += 2;
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if(dump) dumpElement("MARKER: 0x" + Integer.toHexString(marker) + " ");
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try
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{
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ret_val = parseContent(marker);
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}
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finally
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{
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147 |
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setBlockDataMode(old_mode);
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if (DEBUG)
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depth -= 2;
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}
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151 |
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return ret_val;
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}
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154 |
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155 |
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/**
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* Handles a content block within the stream, which begins with a marker
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* byte indicating its type.
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*
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* @param marker the byte marker.
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* @return an object which represents the parsed content.
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* @throws ClassNotFoundException if the class of an object being
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* read in cannot be found.
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* @throws IOException if invalid data occurs or one is thrown by the
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* underlying <code>InputStream</code>.
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*/
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private Object parseContent(byte marker)
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throws ClassNotFoundException, IOException
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168 |
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{
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169 |
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Object ret_val;
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boolean is_consumed = false;
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172 |
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switch (marker)
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{
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174 |
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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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180 |
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181 |
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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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{ if(dump) dumpElementln("BLOCKDATALONG"); }
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else
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{ if(dump) dumpElementln("BLOCKDATA"); }
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readNextBlock(marker);
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}
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case TC_NULL:
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{
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if(dump) 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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if(dump) dumpElement("REFERENCE ");
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Integer oid = new Integer(this.realInputStream.readInt());
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if(dump) 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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207 |
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208 |
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case TC_CLASS:
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{
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if(dump) 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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216 |
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}
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217 |
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218 |
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case TC_PROXYCLASSDESC:
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{
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220 |
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if(dump) dumpElementln("PROXYCLASS");
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int n_intf = this.realInputStream.readInt();
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222 |
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String[] intfs = new String[n_intf];
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223 |
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for (int i = 0; i < n_intf; i++)
|
224 |
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{
|
225 |
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intfs[i] = this.realInputStream.readUTF();
|
226 |
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}
|
227 |
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228 |
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boolean oldmode = setBlockDataMode(true);
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229 |
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Class cl = resolveProxyClass(intfs);
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setBlockDataMode(oldmode);
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231 |
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|
232 |
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ObjectStreamClass osc = lookupClass(cl);
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233 |
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if (osc.firstNonSerializableParentConstructor == null)
|
234 |
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{
|
235 |
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osc.realClassIsSerializable = true;
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236 |
|
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osc.fields = osc.fieldMapping = new ObjectStreamField[0];
|
237 |
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try
|
238 |
|
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{
|
239 |
|
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osc.firstNonSerializableParentConstructor =
|
240 |
|
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Object.class.getConstructor(new Class[0]);
|
241 |
|
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}
|
242 |
|
|
catch (NoSuchMethodException x)
|
243 |
|
|
{
|
244 |
|
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throw (InternalError)
|
245 |
|
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new InternalError("Object ctor missing").initCause(x);
|
246 |
|
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}
|
247 |
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}
|
248 |
|
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assignNewHandle(osc);
|
249 |
|
|
|
250 |
|
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if (!is_consumed)
|
251 |
|
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{
|
252 |
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byte b = this.realInputStream.readByte();
|
253 |
|
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if (b != TC_ENDBLOCKDATA)
|
254 |
|
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throw new IOException("Data annotated to class was not consumed." + b);
|
255 |
|
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}
|
256 |
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else
|
257 |
|
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is_consumed = false;
|
258 |
|
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ObjectStreamClass superosc = (ObjectStreamClass)readObject();
|
259 |
|
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osc.setSuperclass(superosc);
|
260 |
|
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ret_val = osc;
|
261 |
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break;
|
262 |
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}
|
263 |
|
|
|
264 |
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case TC_CLASSDESC:
|
265 |
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{
|
266 |
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ObjectStreamClass osc = readClassDescriptor();
|
267 |
|
|
|
268 |
|
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if (!is_consumed)
|
269 |
|
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{
|
270 |
|
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byte b = this.realInputStream.readByte();
|
271 |
|
|
if (b != TC_ENDBLOCKDATA)
|
272 |
|
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throw new IOException("Data annotated to class was not consumed." + b);
|
273 |
|
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}
|
274 |
|
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else
|
275 |
|
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is_consumed = false;
|
276 |
|
|
|
277 |
|
|
osc.setSuperclass ((ObjectStreamClass)readObject());
|
278 |
|
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ret_val = osc;
|
279 |
|
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break;
|
280 |
|
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}
|
281 |
|
|
|
282 |
|
|
case TC_STRING:
|
283 |
|
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case TC_LONGSTRING:
|
284 |
|
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{
|
285 |
|
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if(dump) dumpElement("STRING=");
|
286 |
|
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String s = this.realInputStream.readUTF();
|
287 |
|
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if(dump) dumpElementln(s);
|
288 |
|
|
ret_val = processResolution(null, s, assignNewHandle(s));
|
289 |
|
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break;
|
290 |
|
|
}
|
291 |
|
|
|
292 |
|
|
case TC_ARRAY:
|
293 |
|
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{
|
294 |
|
|
if(dump) dumpElementln("ARRAY");
|
295 |
|
|
ObjectStreamClass osc = (ObjectStreamClass)readObject();
|
296 |
|
|
Class componentType = osc.forClass().getComponentType();
|
297 |
|
|
if(dump) dumpElement("ARRAY LENGTH=");
|
298 |
|
|
int length = this.realInputStream.readInt();
|
299 |
|
|
if(dump) dumpElementln (length + "; COMPONENT TYPE=" + componentType);
|
300 |
|
|
Object array = Array.newInstance(componentType, length);
|
301 |
|
|
int handle = assignNewHandle(array);
|
302 |
|
|
readArrayElements(array, componentType);
|
303 |
|
|
if(dump)
|
304 |
|
|
for (int i = 0, len = Array.getLength(array); i < len; i++)
|
305 |
|
|
dumpElementln(" ELEMENT[" + i + "]=" + Array.get(array, i));
|
306 |
|
|
ret_val = processResolution(null, array, handle);
|
307 |
|
|
break;
|
308 |
|
|
}
|
309 |
|
|
|
310 |
|
|
case TC_OBJECT:
|
311 |
|
|
{
|
312 |
|
|
if(dump) dumpElementln("OBJECT");
|
313 |
|
|
ObjectStreamClass osc = (ObjectStreamClass)readObject();
|
314 |
|
|
Class clazz = osc.forClass();
|
315 |
|
|
|
316 |
|
|
if (!osc.realClassIsSerializable)
|
317 |
|
|
throw new NotSerializableException
|
318 |
|
|
(clazz + " is not Serializable, and thus cannot be deserialized.");
|
319 |
|
|
|
320 |
|
|
if (osc.realClassIsExternalizable)
|
321 |
|
|
{
|
322 |
|
|
Externalizable obj = osc.newInstance();
|
323 |
|
|
|
324 |
|
|
int handle = assignNewHandle(obj);
|
325 |
|
|
|
326 |
|
|
boolean read_from_blocks = ((osc.getFlags() & SC_BLOCK_DATA) != 0);
|
327 |
|
|
|
328 |
|
|
boolean oldmode = this.readDataFromBlock;
|
329 |
|
|
if (read_from_blocks)
|
330 |
|
|
setBlockDataMode(true);
|
331 |
|
|
|
332 |
|
|
obj.readExternal(this);
|
333 |
|
|
|
334 |
|
|
if (read_from_blocks)
|
335 |
|
|
{
|
336 |
|
|
setBlockDataMode(oldmode);
|
337 |
|
|
if (!oldmode)
|
338 |
|
|
if (this.realInputStream.readByte() != TC_ENDBLOCKDATA)
|
339 |
|
|
throw new IOException("No end of block data seen for class with readExternal (ObjectInputStream) method.");
|
340 |
|
|
}
|
341 |
|
|
|
342 |
|
|
ret_val = processResolution(osc, obj, handle);
|
343 |
|
|
break;
|
344 |
|
|
|
345 |
|
|
} // end if (osc.realClassIsExternalizable)
|
346 |
|
|
|
347 |
|
|
Object obj = newObject(clazz, osc.firstNonSerializableParentConstructor);
|
348 |
|
|
|
349 |
|
|
int handle = assignNewHandle(obj);
|
350 |
|
|
Object prevObject = this.currentObject;
|
351 |
|
|
ObjectStreamClass prevObjectStreamClass = this.currentObjectStreamClass;
|
352 |
|
|
TreeSet prevObjectValidators = this.currentObjectValidators;
|
353 |
|
|
|
354 |
|
|
this.currentObject = obj;
|
355 |
|
|
this.currentObjectValidators = null;
|
356 |
|
|
ObjectStreamClass[] hierarchy =
|
357 |
|
|
inputGetObjectStreamClasses(clazz);
|
358 |
|
|
|
359 |
|
|
for (int i = 0; i < hierarchy.length; i++)
|
360 |
|
|
{
|
361 |
|
|
this.currentObjectStreamClass = hierarchy[i];
|
362 |
|
|
if(dump) dumpElementln("Reading fields of " + this.currentObjectStreamClass.getName ());
|
363 |
|
|
|
364 |
|
|
// XXX: should initialize fields in classes in the hierarchy
|
365 |
|
|
// that aren't in the stream
|
366 |
|
|
// should skip over classes in the stream that aren't in the
|
367 |
|
|
// real classes hierarchy
|
368 |
|
|
|
369 |
|
|
Method readObjectMethod = this.currentObjectStreamClass.readObjectMethod;
|
370 |
|
|
if (readObjectMethod != null)
|
371 |
|
|
{
|
372 |
|
|
fieldsAlreadyRead = false;
|
373 |
|
|
boolean oldmode = setBlockDataMode(true);
|
374 |
|
|
callReadMethod(readObjectMethod, this.currentObjectStreamClass.forClass(), obj);
|
375 |
|
|
setBlockDataMode(oldmode);
|
376 |
|
|
}
|
377 |
|
|
else
|
378 |
|
|
{
|
379 |
|
|
readFields(obj, currentObjectStreamClass);
|
380 |
|
|
}
|
381 |
|
|
|
382 |
|
|
if (this.currentObjectStreamClass.hasWriteMethod())
|
383 |
|
|
{
|
384 |
|
|
if(dump) dumpElement("ENDBLOCKDATA? ");
|
385 |
|
|
try
|
386 |
|
|
{
|
387 |
|
|
/* Read blocks until an end marker */
|
388 |
|
|
byte writeMarker = this.realInputStream.readByte();
|
389 |
|
|
while (writeMarker != TC_ENDBLOCKDATA)
|
390 |
|
|
{
|
391 |
|
|
parseContent(writeMarker);
|
392 |
|
|
writeMarker = this.realInputStream.readByte();
|
393 |
|
|
}
|
394 |
|
|
if(dump) dumpElementln("yes");
|
395 |
|
|
}
|
396 |
|
|
catch (EOFException e)
|
397 |
|
|
{
|
398 |
|
|
throw (IOException) new IOException
|
399 |
|
|
("No end of block data seen for class with readObject (ObjectInputStream) method.").initCause(e);
|
400 |
|
|
}
|
401 |
|
|
}
|
402 |
|
|
}
|
403 |
|
|
|
404 |
|
|
this.currentObject = prevObject;
|
405 |
|
|
this.currentObjectStreamClass = prevObjectStreamClass;
|
406 |
|
|
ret_val = processResolution(osc, obj, handle);
|
407 |
|
|
if (currentObjectValidators != null)
|
408 |
|
|
invokeValidators();
|
409 |
|
|
this.currentObjectValidators = prevObjectValidators;
|
410 |
|
|
|
411 |
|
|
break;
|
412 |
|
|
}
|
413 |
|
|
|
414 |
|
|
case TC_RESET:
|
415 |
|
|
if(dump) dumpElementln("RESET");
|
416 |
|
|
clearHandles();
|
417 |
|
|
ret_val = readObject();
|
418 |
|
|
break;
|
419 |
|
|
|
420 |
|
|
case TC_EXCEPTION:
|
421 |
|
|
{
|
422 |
|
|
if(dump) dumpElement("EXCEPTION=");
|
423 |
|
|
Exception e = (Exception)readObject();
|
424 |
|
|
if(dump) dumpElementln(e.toString());
|
425 |
|
|
clearHandles();
|
426 |
|
|
throw new WriteAbortedException("Exception thrown during writing of stream", e);
|
427 |
|
|
}
|
428 |
|
|
|
429 |
|
|
default:
|
430 |
|
|
throw new IOException("Unknown marker on stream: " + marker);
|
431 |
|
|
}
|
432 |
|
|
return ret_val;
|
433 |
|
|
}
|
434 |
|
|
|
435 |
|
|
/**
|
436 |
|
|
* This method makes a partial check of types for the fields
|
437 |
|
|
* contained given in arguments. It checks primitive types of
|
438 |
|
|
* fields1 against non primitive types of fields2. This method
|
439 |
|
|
* assumes the two lists has already been sorted according to
|
440 |
|
|
* the Java specification.
|
441 |
|
|
*
|
442 |
|
|
* @param name Name of the class owning the given fields.
|
443 |
|
|
* @param fields1 First list to check.
|
444 |
|
|
* @param fields2 Second list to check.
|
445 |
|
|
* @throws InvalidClassException if a field in fields1, which has a primitive type, is a present
|
446 |
|
|
* in the non primitive part in fields2.
|
447 |
|
|
*/
|
448 |
|
|
private void checkTypeConsistency(String name, ObjectStreamField[] fields1, ObjectStreamField[] fields2)
|
449 |
|
|
throws InvalidClassException
|
450 |
|
|
{
|
451 |
|
|
int nonPrimitive = 0;
|
452 |
|
|
|
453 |
|
|
for (nonPrimitive = 0;
|
454 |
|
|
nonPrimitive < fields1.length
|
455 |
|
|
&& fields1[nonPrimitive].isPrimitive(); nonPrimitive++)
|
456 |
|
|
{
|
457 |
|
|
}
|
458 |
|
|
|
459 |
|
|
if (nonPrimitive == fields1.length)
|
460 |
|
|
return;
|
461 |
|
|
|
462 |
|
|
int i = 0;
|
463 |
|
|
ObjectStreamField f1;
|
464 |
|
|
ObjectStreamField f2;
|
465 |
|
|
|
466 |
|
|
while (i < fields2.length
|
467 |
|
|
&& nonPrimitive < fields1.length)
|
468 |
|
|
{
|
469 |
|
|
f1 = fields1[nonPrimitive];
|
470 |
|
|
f2 = fields2[i];
|
471 |
|
|
|
472 |
|
|
if (!f2.isPrimitive())
|
473 |
|
|
break;
|
474 |
|
|
|
475 |
|
|
int compVal = f1.getName().compareTo (f2.getName());
|
476 |
|
|
|
477 |
|
|
if (compVal < 0)
|
478 |
|
|
{
|
479 |
|
|
nonPrimitive++;
|
480 |
|
|
}
|
481 |
|
|
else if (compVal > 0)
|
482 |
|
|
{
|
483 |
|
|
i++;
|
484 |
|
|
}
|
485 |
|
|
else
|
486 |
|
|
{
|
487 |
|
|
throw new InvalidClassException
|
488 |
|
|
("invalid field type for " + f2.getName() +
|
489 |
|
|
" in class " + name);
|
490 |
|
|
}
|
491 |
|
|
}
|
492 |
|
|
}
|
493 |
|
|
|
494 |
|
|
/**
|
495 |
|
|
* This method reads a class descriptor from the real input stream
|
496 |
|
|
* and use these data to create a new instance of ObjectStreamClass.
|
497 |
|
|
* Fields are sorted and ordered for the real read which occurs for
|
498 |
|
|
* each instance of the described class. Be aware that if you call that
|
499 |
|
|
* method you must ensure that the stream is synchronized, in the other
|
500 |
|
|
* case it may be completely desynchronized.
|
501 |
|
|
*
|
502 |
|
|
* @return A new instance of ObjectStreamClass containing the freshly
|
503 |
|
|
* created descriptor.
|
504 |
|
|
* @throws ClassNotFoundException if the required class to build the
|
505 |
|
|
* descriptor has not been found in the system.
|
506 |
|
|
* @throws IOException An input/output error occured.
|
507 |
|
|
* @throws InvalidClassException If there was a compatibility problem
|
508 |
|
|
* between the class present in the system and the serialized class.
|
509 |
|
|
*/
|
510 |
|
|
protected ObjectStreamClass readClassDescriptor()
|
511 |
|
|
throws ClassNotFoundException, IOException
|
512 |
|
|
{
|
513 |
|
|
if(dump) dumpElement("CLASSDESC NAME=");
|
514 |
|
|
String name = this.realInputStream.readUTF();
|
515 |
|
|
if(dump) dumpElement(name + "; UID=");
|
516 |
|
|
long uid = this.realInputStream.readLong ();
|
517 |
|
|
if(dump) dumpElement(Long.toHexString(uid) + "; FLAGS=");
|
518 |
|
|
byte flags = this.realInputStream.readByte ();
|
519 |
|
|
if(dump) dumpElement(Integer.toHexString(flags) + "; FIELD COUNT=");
|
520 |
|
|
short field_count = this.realInputStream.readShort();
|
521 |
|
|
if(dump) dumpElementln(Short.toString(field_count));
|
522 |
|
|
ObjectStreamField[] fields = new ObjectStreamField[field_count];
|
523 |
|
|
ObjectStreamClass osc = new ObjectStreamClass(name, uid,
|
524 |
|
|
flags, fields);
|
525 |
|
|
assignNewHandle(osc);
|
526 |
|
|
|
527 |
|
|
ClassLoader callersClassLoader = currentLoader();
|
528 |
|
|
|
529 |
|
|
for (int i = 0; i < field_count; i++)
|
530 |
|
|
{
|
531 |
|
|
if(dump) dumpElement(" TYPE CODE=");
|
532 |
|
|
char type_code = (char)this.realInputStream.readByte();
|
533 |
|
|
if(dump) dumpElement(type_code + "; FIELD NAME=");
|
534 |
|
|
String field_name = this.realInputStream.readUTF();
|
535 |
|
|
if(dump) dumpElementln(field_name);
|
536 |
|
|
String class_name;
|
537 |
|
|
|
538 |
|
|
// If the type code is an array or an object we must
|
539 |
|
|
// decode a String here. In the other case we convert
|
540 |
|
|
// the type code and pass it to ObjectStreamField.
|
541 |
|
|
// Type codes are decoded by gnu.java.lang.reflect.TypeSignature.
|
542 |
|
|
if (type_code == 'L' || type_code == '[')
|
543 |
|
|
class_name = (String)readObject();
|
544 |
|
|
else
|
545 |
|
|
class_name = String.valueOf(type_code);
|
546 |
|
|
|
547 |
|
|
fields[i] =
|
548 |
|
|
new ObjectStreamField(field_name, class_name, callersClassLoader);
|
549 |
|
|
}
|
550 |
|
|
|
551 |
|
|
/* Now that fields have been read we may resolve the class
|
552 |
|
|
* (and read annotation if needed). */
|
553 |
|
|
Class clazz = resolveClass(osc);
|
554 |
|
|
boolean oldmode = setBlockDataMode(true);
|
555 |
|
|
osc.setClass(clazz, lookupClass(clazz.getSuperclass()));
|
556 |
|
|
classLookupTable.put(clazz, osc);
|
557 |
|
|
setBlockDataMode(oldmode);
|
558 |
|
|
|
559 |
|
|
// find the first non-serializable, non-abstract
|
560 |
|
|
// class in clazz's inheritance hierarchy
|
561 |
|
|
Class first_nonserial = clazz.getSuperclass();
|
562 |
|
|
// Maybe it is a primitive class, those don't have a super class,
|
563 |
|
|
// or Object itself. Otherwise we can keep getting the superclass
|
564 |
|
|
// till we hit the Object class, or some other non-serializable class.
|
565 |
|
|
|
566 |
|
|
if (first_nonserial == null)
|
567 |
|
|
first_nonserial = clazz;
|
568 |
|
|
else
|
569 |
|
|
while (Serializable.class.isAssignableFrom(first_nonserial)
|
570 |
|
|
|| Modifier.isAbstract(first_nonserial.getModifiers()))
|
571 |
|
|
first_nonserial = first_nonserial.getSuperclass();
|
572 |
|
|
|
573 |
|
|
final Class local_constructor_class = first_nonserial;
|
574 |
|
|
|
575 |
|
|
osc.firstNonSerializableParentConstructor =
|
576 |
|
|
(Constructor)AccessController.doPrivileged(new PrivilegedAction()
|
577 |
|
|
{
|
578 |
|
|
public Object run()
|
579 |
|
|
{
|
580 |
|
|
try
|
581 |
|
|
{
|
582 |
|
|
Constructor c = local_constructor_class.
|
583 |
|
|
getDeclaredConstructor(new Class[0]);
|
584 |
|
|
if (Modifier.isPrivate(c.getModifiers()))
|
585 |
|
|
return null;
|
586 |
|
|
return c;
|
587 |
|
|
}
|
588 |
|
|
catch (NoSuchMethodException e)
|
589 |
|
|
{
|
590 |
|
|
// error will be reported later, in newObject()
|
591 |
|
|
return null;
|
592 |
|
|
}
|
593 |
|
|
}
|
594 |
|
|
});
|
595 |
|
|
|
596 |
|
|
osc.realClassIsSerializable = Serializable.class.isAssignableFrom(clazz);
|
597 |
|
|
osc.realClassIsExternalizable = Externalizable.class.isAssignableFrom(clazz);
|
598 |
|
|
|
599 |
|
|
ObjectStreamField[] stream_fields = osc.fields;
|
600 |
|
|
ObjectStreamField[] real_fields = ObjectStreamClass.lookupForClassObject(clazz).fields;
|
601 |
|
|
ObjectStreamField[] fieldmapping = new ObjectStreamField[2 * Math.max(stream_fields.length, real_fields.length)];
|
602 |
|
|
|
603 |
|
|
int stream_idx = 0;
|
604 |
|
|
int real_idx = 0;
|
605 |
|
|
int map_idx = 0;
|
606 |
|
|
|
607 |
|
|
/*
|
608 |
|
|
* Check that there is no type inconsistencies between the lists.
|
609 |
|
|
* A special checking must be done for the two groups: primitive types and
|
610 |
|
|
* not primitive types.
|
611 |
|
|
*/
|
612 |
|
|
checkTypeConsistency(name, real_fields, stream_fields);
|
613 |
|
|
checkTypeConsistency(name, stream_fields, real_fields);
|
614 |
|
|
|
615 |
|
|
|
616 |
|
|
while (stream_idx < stream_fields.length
|
617 |
|
|
|| real_idx < real_fields.length)
|
618 |
|
|
{
|
619 |
|
|
ObjectStreamField stream_field = null;
|
620 |
|
|
ObjectStreamField real_field = null;
|
621 |
|
|
|
622 |
|
|
if (stream_idx == stream_fields.length)
|
623 |
|
|
{
|
624 |
|
|
real_field = real_fields[real_idx++];
|
625 |
|
|
}
|
626 |
|
|
else if (real_idx == real_fields.length)
|
627 |
|
|
{
|
628 |
|
|
stream_field = stream_fields[stream_idx++];
|
629 |
|
|
}
|
630 |
|
|
else
|
631 |
|
|
{
|
632 |
|
|
int comp_val =
|
633 |
|
|
real_fields[real_idx].compareTo (stream_fields[stream_idx]);
|
634 |
|
|
|
635 |
|
|
if (comp_val < 0)
|
636 |
|
|
{
|
637 |
|
|
real_field = real_fields[real_idx++];
|
638 |
|
|
}
|
639 |
|
|
else if (comp_val > 0)
|
640 |
|
|
{
|
641 |
|
|
stream_field = stream_fields[stream_idx++];
|
642 |
|
|
}
|
643 |
|
|
else
|
644 |
|
|
{
|
645 |
|
|
stream_field = stream_fields[stream_idx++];
|
646 |
|
|
real_field = real_fields[real_idx++];
|
647 |
|
|
if (stream_field.getType() != real_field.getType())
|
648 |
|
|
throw new InvalidClassException
|
649 |
|
|
("invalid field type for " + real_field.getName() +
|
650 |
|
|
" in class " + name);
|
651 |
|
|
}
|
652 |
|
|
}
|
653 |
|
|
|
654 |
|
|
/* If some of stream_fields does not correspond to any of real_fields,
|
655 |
|
|
* or the opposite, then fieldmapping will go short.
|
656 |
|
|
*/
|
657 |
|
|
if (map_idx == fieldmapping.length)
|
658 |
|
|
{
|
659 |
|
|
ObjectStreamField[] newfieldmapping =
|
660 |
|
|
new ObjectStreamField[fieldmapping.length + 2];
|
661 |
|
|
System.arraycopy(fieldmapping, 0,
|
662 |
|
|
newfieldmapping, 0, fieldmapping.length);
|
663 |
|
|
fieldmapping = newfieldmapping;
|
664 |
|
|
}
|
665 |
|
|
fieldmapping[map_idx++] = stream_field;
|
666 |
|
|
fieldmapping[map_idx++] = real_field;
|
667 |
|
|
}
|
668 |
|
|
osc.fieldMapping = fieldmapping;
|
669 |
|
|
|
670 |
|
|
return osc;
|
671 |
|
|
}
|
672 |
|
|
|
673 |
|
|
/**
|
674 |
|
|
* Reads the current objects non-transient, non-static fields from
|
675 |
|
|
* the current class from the underlying output stream.
|
676 |
|
|
*
|
677 |
|
|
* This method is intended to be called from within a object's
|
678 |
|
|
* <code>private void readObject (ObjectInputStream)</code>
|
679 |
|
|
* method.
|
680 |
|
|
*
|
681 |
|
|
* @exception ClassNotFoundException The class that an object being
|
682 |
|
|
* read in belongs to cannot be found.
|
683 |
|
|
*
|
684 |
|
|
* @exception NotActiveException This method was called from a
|
685 |
|
|
* context other than from the current object's and current class's
|
686 |
|
|
* <code>private void readObject (ObjectInputStream)</code>
|
687 |
|
|
* method.
|
688 |
|
|
*
|
689 |
|
|
* @exception IOException Exception from underlying
|
690 |
|
|
* <code>OutputStream</code>.
|
691 |
|
|
*/
|
692 |
|
|
public void defaultReadObject()
|
693 |
|
|
throws ClassNotFoundException, IOException, NotActiveException
|
694 |
|
|
{
|
695 |
|
|
if (this.currentObject == null || this.currentObjectStreamClass == null)
|
696 |
|
|
throw new NotActiveException("defaultReadObject called by non-active"
|
697 |
|
|
+ " class and/or object");
|
698 |
|
|
|
699 |
|
|
if (fieldsAlreadyRead)
|
700 |
|
|
throw new NotActiveException("defaultReadObject called but fields "
|
701 |
|
|
+ "already read from stream (by "
|
702 |
|
|
+ "defaultReadObject or readFields)");
|
703 |
|
|
|
704 |
|
|
boolean oldmode = setBlockDataMode(false);
|
705 |
|
|
readFields(this.currentObject, this.currentObjectStreamClass);
|
706 |
|
|
setBlockDataMode(oldmode);
|
707 |
|
|
|
708 |
|
|
fieldsAlreadyRead = true;
|
709 |
|
|
}
|
710 |
|
|
|
711 |
|
|
|
712 |
|
|
/**
|
713 |
|
|
* Registers a <code>ObjectInputValidation</code> to be carried out
|
714 |
|
|
* on the object graph currently being deserialized before it is
|
715 |
|
|
* returned to the original caller of <code>readObject ()</code>.
|
716 |
|
|
* The order of validation for multiple
|
717 |
|
|
* <code>ObjectInputValidation</code>s can be controled using
|
718 |
|
|
* <code>priority</code>. Validators with higher priorities are
|
719 |
|
|
* called first.
|
720 |
|
|
*
|
721 |
|
|
* @see java.io.ObjectInputValidation
|
722 |
|
|
*
|
723 |
|
|
* @exception InvalidObjectException <code>validator</code> is
|
724 |
|
|
* <code>null</code>
|
725 |
|
|
*
|
726 |
|
|
* @exception NotActiveException an attempt was made to add a
|
727 |
|
|
* validator outside of the <code>readObject</code> method of the
|
728 |
|
|
* object currently being deserialized
|
729 |
|
|
*/
|
730 |
|
|
public void registerValidation(ObjectInputValidation validator,
|
731 |
|
|
int priority)
|
732 |
|
|
throws InvalidObjectException, NotActiveException
|
733 |
|
|
{
|
734 |
|
|
if (this.currentObject == null || this.currentObjectStreamClass == null)
|
735 |
|
|
throw new NotActiveException("registerValidation called by non-active "
|
736 |
|
|
+ "class and/or object");
|
737 |
|
|
|
738 |
|
|
if (validator == null)
|
739 |
|
|
throw new InvalidObjectException("attempt to add a null "
|
740 |
|
|
+ "ObjectInputValidation object");
|
741 |
|
|
|
742 |
|
|
if (currentObjectValidators == null)
|
743 |
|
|
currentObjectValidators = new TreeSet();
|
744 |
|
|
|
745 |
|
|
currentObjectValidators.add(new ValidatorAndPriority(validator, priority));
|
746 |
|
|
}
|
747 |
|
|
|
748 |
|
|
|
749 |
|
|
/**
|
750 |
|
|
* Called when a class is being deserialized. This is a hook to
|
751 |
|
|
* allow subclasses to read in information written by the
|
752 |
|
|
* <code>annotateClass (Class)</code> method of an
|
753 |
|
|
* <code>ObjectOutputStream</code>.
|
754 |
|
|
*
|
755 |
|
|
* This implementation looks up the active call stack for a
|
756 |
|
|
* <code>ClassLoader</code>; if a <code>ClassLoader</code> is found,
|
757 |
|
|
* it is used to load the class associated with <code>osc</code>,
|
758 |
|
|
* otherwise, the default system <code>ClassLoader</code> is used.
|
759 |
|
|
*
|
760 |
|
|
* @exception IOException Exception from underlying
|
761 |
|
|
* <code>OutputStream</code>.
|
762 |
|
|
*
|
763 |
|
|
* @see java.io.ObjectOutputStream#annotateClass (java.lang.Class)
|
764 |
|
|
*/
|
765 |
|
|
protected Class resolveClass(ObjectStreamClass osc)
|
766 |
|
|
throws ClassNotFoundException, IOException
|
767 |
|
|
{
|
768 |
|
|
String name = osc.getName();
|
769 |
|
|
try
|
770 |
|
|
{
|
771 |
|
|
return Class.forName(name, true, currentLoader());
|
772 |
|
|
}
|
773 |
|
|
catch(ClassNotFoundException x)
|
774 |
|
|
{
|
775 |
|
|
if (name.equals("void"))
|
776 |
|
|
return Void.TYPE;
|
777 |
|
|
else if (name.equals("boolean"))
|
778 |
|
|
return Boolean.TYPE;
|
779 |
|
|
else if (name.equals("byte"))
|
780 |
|
|
return Byte.TYPE;
|
781 |
|
|
else if (name.equals("char"))
|
782 |
|
|
return Character.TYPE;
|
783 |
|
|
else if (name.equals("short"))
|
784 |
|
|
return Short.TYPE;
|
785 |
|
|
else if (name.equals("int"))
|
786 |
|
|
return Integer.TYPE;
|
787 |
|
|
else if (name.equals("long"))
|
788 |
|
|
return Long.TYPE;
|
789 |
|
|
else if (name.equals("float"))
|
790 |
|
|
return Float.TYPE;
|
791 |
|
|
else if (name.equals("double"))
|
792 |
|
|
return Double.TYPE;
|
793 |
|
|
else
|
794 |
|
|
throw x;
|
795 |
|
|
}
|
796 |
|
|
}
|
797 |
|
|
|
798 |
|
|
/**
|
799 |
|
|
* Returns the most recent user defined ClassLoader on the execution stack
|
800 |
|
|
* or null if none is found.
|
801 |
|
|
*/
|
802 |
|
|
private ClassLoader currentLoader()
|
803 |
|
|
{
|
804 |
|
|
return VMObjectInputStream.currentClassLoader();
|
805 |
|
|
}
|
806 |
|
|
|
807 |
|
|
/**
|
808 |
|
|
* Lookup a class stored in the local hashtable. If it is not
|
809 |
|
|
* use the global lookup function in ObjectStreamClass to build
|
810 |
|
|
* the ObjectStreamClass. This method is requested according to
|
811 |
|
|
* the behaviour detected in the JDK by Kaffe's team.
|
812 |
|
|
*
|
813 |
|
|
* @param clazz Class to lookup in the hash table or for which
|
814 |
|
|
* we must build a descriptor.
|
815 |
|
|
* @return A valid instance of ObjectStreamClass corresponding
|
816 |
|
|
* to the specified class.
|
817 |
|
|
*/
|
818 |
|
|
private ObjectStreamClass lookupClass(Class clazz)
|
819 |
|
|
{
|
820 |
|
|
if (clazz == null)
|
821 |
|
|
return null;
|
822 |
|
|
|
823 |
|
|
ObjectStreamClass oclazz;
|
824 |
|
|
oclazz = (ObjectStreamClass)classLookupTable.get(clazz);
|
825 |
|
|
if (oclazz == null)
|
826 |
|
|
return ObjectStreamClass.lookup(clazz);
|
827 |
|
|
else
|
828 |
|
|
return oclazz;
|
829 |
|
|
}
|
830 |
|
|
|
831 |
|
|
/**
|
832 |
|
|
* Reconstruct class hierarchy the same way
|
833 |
|
|
* {@link java.io.ObjectStreamClass#getObjectStreamClasses(Class)} does
|
834 |
|
|
* but using lookupClass instead of ObjectStreamClass.lookup. This
|
835 |
|
|
* dup is necessary localize the lookup table. Hopefully some future
|
836 |
|
|
* rewritings will be able to prevent this.
|
837 |
|
|
*
|
838 |
|
|
* @param clazz This is the class for which we want the hierarchy.
|
839 |
|
|
*
|
840 |
|
|
* @return An array of valid {@link java.io.ObjectStreamClass} instances which
|
841 |
|
|
* represent the class hierarchy for clazz.
|
842 |
|
|
*/
|
843 |
|
|
private ObjectStreamClass[] inputGetObjectStreamClasses(Class clazz)
|
844 |
|
|
{
|
845 |
|
|
ObjectStreamClass osc = lookupClass(clazz);
|
846 |
|
|
|
847 |
|
|
if (osc == null)
|
848 |
|
|
return new ObjectStreamClass[0];
|
849 |
|
|
else
|
850 |
|
|
{
|
851 |
|
|
Vector oscs = new Vector();
|
852 |
|
|
|
853 |
|
|
while (osc != null)
|
854 |
|
|
{
|
855 |
|
|
oscs.addElement(osc);
|
856 |
|
|
osc = osc.getSuper();
|
857 |
|
|
}
|
858 |
|
|
|
859 |
|
|
int count = oscs.size();
|
860 |
|
|
ObjectStreamClass[] sorted_oscs = new ObjectStreamClass[count];
|
861 |
|
|
|
862 |
|
|
for (int i = count - 1; i >= 0; i--)
|
863 |
|
|
sorted_oscs[count - i - 1] = (ObjectStreamClass) oscs.elementAt(i);
|
864 |
|
|
|
865 |
|
|
return sorted_oscs;
|
866 |
|
|
}
|
867 |
|
|
}
|
868 |
|
|
|
869 |
|
|
/**
|
870 |
|
|
* Allows subclasses to resolve objects that are read from the
|
871 |
|
|
* stream with other objects to be returned in their place. This
|
872 |
|
|
* method is called the first time each object is encountered.
|
873 |
|
|
*
|
874 |
|
|
* This method must be enabled before it will be called in the
|
875 |
|
|
* serialization process.
|
876 |
|
|
*
|
877 |
|
|
* @exception IOException Exception from underlying
|
878 |
|
|
* <code>OutputStream</code>.
|
879 |
|
|
*
|
880 |
|
|
* @see #enableResolveObject(boolean)
|
881 |
|
|
*/
|
882 |
|
|
protected Object resolveObject(Object obj) throws IOException
|
883 |
|
|
{
|
884 |
|
|
return obj;
|
885 |
|
|
}
|
886 |
|
|
|
887 |
|
|
|
888 |
|
|
protected Class resolveProxyClass(String[] intfs)
|
889 |
|
|
throws IOException, ClassNotFoundException
|
890 |
|
|
{
|
891 |
|
|
ClassLoader cl = currentLoader();
|
892 |
|
|
|
893 |
|
|
Class[] clss = new Class[intfs.length];
|
894 |
|
|
if(cl == null)
|
895 |
|
|
{
|
896 |
|
|
for (int i = 0; i < intfs.length; i++)
|
897 |
|
|
clss[i] = Class.forName(intfs[i]);
|
898 |
|
|
cl = ClassLoader.getSystemClassLoader();
|
899 |
|
|
}
|
900 |
|
|
else
|
901 |
|
|
for (int i = 0; i < intfs.length; i++)
|
902 |
|
|
clss[i] = Class.forName(intfs[i], false, cl);
|
903 |
|
|
try
|
904 |
|
|
{
|
905 |
|
|
return Proxy.getProxyClass(cl, clss);
|
906 |
|
|
}
|
907 |
|
|
catch (IllegalArgumentException e)
|
908 |
|
|
{
|
909 |
|
|
throw new ClassNotFoundException(null, e);
|
910 |
|
|
}
|
911 |
|
|
}
|
912 |
|
|
|
913 |
|
|
/**
|
914 |
|
|
* If <code>enable</code> is <code>true</code> and this object is
|
915 |
|
|
* trusted, then <code>resolveObject (Object)</code> will be called
|
916 |
|
|
* in subsequent calls to <code>readObject (Object)</code>.
|
917 |
|
|
* Otherwise, <code>resolveObject (Object)</code> will not be called.
|
918 |
|
|
*
|
919 |
|
|
* @exception SecurityException This class is not trusted.
|
920 |
|
|
*/
|
921 |
|
|
protected boolean enableResolveObject (boolean enable)
|
922 |
|
|
throws SecurityException
|
923 |
|
|
{
|
924 |
|
|
if (enable)
|
925 |
|
|
{
|
926 |
|
|
SecurityManager sm = System.getSecurityManager();
|
927 |
|
|
if (sm != null)
|
928 |
|
|
sm.checkPermission(new SerializablePermission("enableSubstitution"));
|
929 |
|
|
}
|
930 |
|
|
|
931 |
|
|
boolean old_val = this.resolveEnabled;
|
932 |
|
|
this.resolveEnabled = enable;
|
933 |
|
|
return old_val;
|
934 |
|
|
}
|
935 |
|
|
|
936 |
|
|
/**
|
937 |
|
|
* Reads stream magic and stream version information from the
|
938 |
|
|
* underlying stream.
|
939 |
|
|
*
|
940 |
|
|
* @exception IOException Exception from underlying stream.
|
941 |
|
|
*
|
942 |
|
|
* @exception StreamCorruptedException An invalid stream magic
|
943 |
|
|
* number or stream version was read from the stream.
|
944 |
|
|
*/
|
945 |
|
|
protected void readStreamHeader()
|
946 |
|
|
throws IOException, StreamCorruptedException
|
947 |
|
|
{
|
948 |
|
|
if(dump) dumpElement("STREAM MAGIC ");
|
949 |
|
|
if (this.realInputStream.readShort() != STREAM_MAGIC)
|
950 |
|
|
throw new StreamCorruptedException("Invalid stream magic number");
|
951 |
|
|
|
952 |
|
|
if(dump) dumpElementln("STREAM VERSION ");
|
953 |
|
|
if (this.realInputStream.readShort() != STREAM_VERSION)
|
954 |
|
|
throw new StreamCorruptedException("Invalid stream version number");
|
955 |
|
|
}
|
956 |
|
|
|
957 |
|
|
public int read() throws IOException
|
958 |
|
|
{
|
959 |
|
|
if (this.readDataFromBlock)
|
960 |
|
|
{
|
961 |
|
|
if (this.blockDataPosition >= this.blockDataBytes)
|
962 |
|
|
readNextBlock();
|
963 |
|
|
return (this.blockData[this.blockDataPosition++] & 0xff);
|
964 |
|
|
}
|
965 |
|
|
else
|
966 |
|
|
return this.realInputStream.read();
|
967 |
|
|
}
|
968 |
|
|
|
969 |
|
|
public int read(byte[] data, int offset, int length) throws IOException
|
970 |
|
|
{
|
971 |
|
|
if (this.readDataFromBlock)
|
972 |
|
|
{
|
973 |
|
|
int remain = this.blockDataBytes - this.blockDataPosition;
|
974 |
|
|
if (remain == 0)
|
975 |
|
|
{
|
976 |
|
|
readNextBlock();
|
977 |
|
|
remain = this.blockDataBytes - this.blockDataPosition;
|
978 |
|
|
}
|
979 |
|
|
length = Math.min(length, remain);
|
980 |
|
|
System.arraycopy(this.blockData, this.blockDataPosition,
|
981 |
|
|
data, offset, length);
|
982 |
|
|
this.blockDataPosition += length;
|
983 |
|
|
|
984 |
|
|
return length;
|
985 |
|
|
}
|
986 |
|
|
else
|
987 |
|
|
return this.realInputStream.read(data, offset, length);
|
988 |
|
|
}
|
989 |
|
|
|
990 |
|
|
public int available() throws IOException
|
991 |
|
|
{
|
992 |
|
|
if (this.readDataFromBlock)
|
993 |
|
|
{
|
994 |
|
|
if (this.blockDataPosition >= this.blockDataBytes)
|
995 |
|
|
readNextBlock ();
|
996 |
|
|
|
997 |
|
|
return this.blockDataBytes - this.blockDataPosition;
|
998 |
|
|
}
|
999 |
|
|
else
|
1000 |
|
|
return this.realInputStream.available();
|
1001 |
|
|
}
|
1002 |
|
|
|
1003 |
|
|
public void close() throws IOException
|
1004 |
|
|
{
|
1005 |
|
|
this.realInputStream.close();
|
1006 |
|
|
}
|
1007 |
|
|
|
1008 |
|
|
public boolean readBoolean() throws IOException
|
1009 |
|
|
{
|
1010 |
|
|
boolean switchmode = true;
|
1011 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1012 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 1)
|
1013 |
|
|
switchmode = false;
|
1014 |
|
|
if (switchmode)
|
1015 |
|
|
oldmode = setBlockDataMode (true);
|
1016 |
|
|
boolean value = this.dataInputStream.readBoolean ();
|
1017 |
|
|
if (switchmode)
|
1018 |
|
|
setBlockDataMode (oldmode);
|
1019 |
|
|
return value;
|
1020 |
|
|
}
|
1021 |
|
|
|
1022 |
|
|
public byte readByte() throws IOException
|
1023 |
|
|
{
|
1024 |
|
|
boolean switchmode = true;
|
1025 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1026 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 1)
|
1027 |
|
|
switchmode = false;
|
1028 |
|
|
if (switchmode)
|
1029 |
|
|
oldmode = setBlockDataMode(true);
|
1030 |
|
|
byte value = this.dataInputStream.readByte();
|
1031 |
|
|
if (switchmode)
|
1032 |
|
|
setBlockDataMode(oldmode);
|
1033 |
|
|
return value;
|
1034 |
|
|
}
|
1035 |
|
|
|
1036 |
|
|
public int readUnsignedByte() throws IOException
|
1037 |
|
|
{
|
1038 |
|
|
boolean switchmode = true;
|
1039 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1040 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 1)
|
1041 |
|
|
switchmode = false;
|
1042 |
|
|
if (switchmode)
|
1043 |
|
|
oldmode = setBlockDataMode(true);
|
1044 |
|
|
int value = this.dataInputStream.readUnsignedByte();
|
1045 |
|
|
if (switchmode)
|
1046 |
|
|
setBlockDataMode(oldmode);
|
1047 |
|
|
return value;
|
1048 |
|
|
}
|
1049 |
|
|
|
1050 |
|
|
public short readShort() throws IOException
|
1051 |
|
|
{
|
1052 |
|
|
boolean switchmode = true;
|
1053 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1054 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 2)
|
1055 |
|
|
switchmode = false;
|
1056 |
|
|
if (switchmode)
|
1057 |
|
|
oldmode = setBlockDataMode(true);
|
1058 |
|
|
short value = this.dataInputStream.readShort();
|
1059 |
|
|
if (switchmode)
|
1060 |
|
|
setBlockDataMode(oldmode);
|
1061 |
|
|
return value;
|
1062 |
|
|
}
|
1063 |
|
|
|
1064 |
|
|
public int readUnsignedShort() throws IOException
|
1065 |
|
|
{
|
1066 |
|
|
boolean switchmode = true;
|
1067 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1068 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 2)
|
1069 |
|
|
switchmode = false;
|
1070 |
|
|
if (switchmode)
|
1071 |
|
|
oldmode = setBlockDataMode(true);
|
1072 |
|
|
int value = this.dataInputStream.readUnsignedShort();
|
1073 |
|
|
if (switchmode)
|
1074 |
|
|
setBlockDataMode(oldmode);
|
1075 |
|
|
return value;
|
1076 |
|
|
}
|
1077 |
|
|
|
1078 |
|
|
public char readChar() throws IOException
|
1079 |
|
|
{
|
1080 |
|
|
boolean switchmode = true;
|
1081 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1082 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 2)
|
1083 |
|
|
switchmode = false;
|
1084 |
|
|
if (switchmode)
|
1085 |
|
|
oldmode = setBlockDataMode(true);
|
1086 |
|
|
char value = this.dataInputStream.readChar();
|
1087 |
|
|
if (switchmode)
|
1088 |
|
|
setBlockDataMode(oldmode);
|
1089 |
|
|
return value;
|
1090 |
|
|
}
|
1091 |
|
|
|
1092 |
|
|
public int readInt() throws IOException
|
1093 |
|
|
{
|
1094 |
|
|
boolean switchmode = true;
|
1095 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1096 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 4)
|
1097 |
|
|
switchmode = false;
|
1098 |
|
|
if (switchmode)
|
1099 |
|
|
oldmode = setBlockDataMode(true);
|
1100 |
|
|
int value = this.dataInputStream.readInt();
|
1101 |
|
|
if (switchmode)
|
1102 |
|
|
setBlockDataMode(oldmode);
|
1103 |
|
|
return value;
|
1104 |
|
|
}
|
1105 |
|
|
|
1106 |
|
|
public long readLong() throws IOException
|
1107 |
|
|
{
|
1108 |
|
|
boolean switchmode = true;
|
1109 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1110 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 8)
|
1111 |
|
|
switchmode = false;
|
1112 |
|
|
if (switchmode)
|
1113 |
|
|
oldmode = setBlockDataMode(true);
|
1114 |
|
|
long value = this.dataInputStream.readLong();
|
1115 |
|
|
if (switchmode)
|
1116 |
|
|
setBlockDataMode(oldmode);
|
1117 |
|
|
return value;
|
1118 |
|
|
}
|
1119 |
|
|
|
1120 |
|
|
public float readFloat() throws IOException
|
1121 |
|
|
{
|
1122 |
|
|
boolean switchmode = true;
|
1123 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1124 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 4)
|
1125 |
|
|
switchmode = false;
|
1126 |
|
|
if (switchmode)
|
1127 |
|
|
oldmode = setBlockDataMode(true);
|
1128 |
|
|
float value = this.dataInputStream.readFloat();
|
1129 |
|
|
if (switchmode)
|
1130 |
|
|
setBlockDataMode(oldmode);
|
1131 |
|
|
return value;
|
1132 |
|
|
}
|
1133 |
|
|
|
1134 |
|
|
public double readDouble() throws IOException
|
1135 |
|
|
{
|
1136 |
|
|
boolean switchmode = true;
|
1137 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1138 |
|
|
if (!oldmode || this.blockDataBytes - this.blockDataPosition >= 8)
|
1139 |
|
|
switchmode = false;
|
1140 |
|
|
if (switchmode)
|
1141 |
|
|
oldmode = setBlockDataMode(true);
|
1142 |
|
|
double value = this.dataInputStream.readDouble();
|
1143 |
|
|
if (switchmode)
|
1144 |
|
|
setBlockDataMode(oldmode);
|
1145 |
|
|
return value;
|
1146 |
|
|
}
|
1147 |
|
|
|
1148 |
|
|
public void readFully(byte data[]) throws IOException
|
1149 |
|
|
{
|
1150 |
|
|
this.dataInputStream.readFully(data);
|
1151 |
|
|
}
|
1152 |
|
|
|
1153 |
|
|
public void readFully(byte data[], int offset, int size)
|
1154 |
|
|
throws IOException
|
1155 |
|
|
{
|
1156 |
|
|
this.dataInputStream.readFully(data, offset, size);
|
1157 |
|
|
}
|
1158 |
|
|
|
1159 |
|
|
public int skipBytes(int len) throws IOException
|
1160 |
|
|
{
|
1161 |
|
|
return this.dataInputStream.skipBytes(len);
|
1162 |
|
|
}
|
1163 |
|
|
|
1164 |
|
|
/**
|
1165 |
|
|
* @deprecated
|
1166 |
|
|
* @see java.io.DataInputStream#readLine ()
|
1167 |
|
|
*/
|
1168 |
|
|
public String readLine() throws IOException
|
1169 |
|
|
{
|
1170 |
|
|
return this.dataInputStream.readLine();
|
1171 |
|
|
}
|
1172 |
|
|
|
1173 |
|
|
public String readUTF() throws IOException
|
1174 |
|
|
{
|
1175 |
|
|
return this.dataInputStream.readUTF();
|
1176 |
|
|
}
|
1177 |
|
|
|
1178 |
|
|
/**
|
1179 |
|
|
* This class allows a class to specify exactly which fields should
|
1180 |
|
|
* be read, and what values should be read for these fields.
|
1181 |
|
|
*
|
1182 |
|
|
* XXX: finish up comments
|
1183 |
|
|
*/
|
1184 |
|
|
public abstract static class GetField
|
1185 |
|
|
{
|
1186 |
|
|
public abstract ObjectStreamClass getObjectStreamClass();
|
1187 |
|
|
|
1188 |
|
|
public abstract boolean defaulted(String name)
|
1189 |
|
|
throws IOException, IllegalArgumentException;
|
1190 |
|
|
|
1191 |
|
|
public abstract boolean get(String name, boolean defvalue)
|
1192 |
|
|
throws IOException, IllegalArgumentException;
|
1193 |
|
|
|
1194 |
|
|
public abstract char get(String name, char defvalue)
|
1195 |
|
|
throws IOException, IllegalArgumentException;
|
1196 |
|
|
|
1197 |
|
|
public abstract byte get(String name, byte defvalue)
|
1198 |
|
|
throws IOException, IllegalArgumentException;
|
1199 |
|
|
|
1200 |
|
|
public abstract short get(String name, short defvalue)
|
1201 |
|
|
throws IOException, IllegalArgumentException;
|
1202 |
|
|
|
1203 |
|
|
public abstract int get(String name, int defvalue)
|
1204 |
|
|
throws IOException, IllegalArgumentException;
|
1205 |
|
|
|
1206 |
|
|
public abstract long get(String name, long defvalue)
|
1207 |
|
|
throws IOException, IllegalArgumentException;
|
1208 |
|
|
|
1209 |
|
|
public abstract float get(String name, float defvalue)
|
1210 |
|
|
throws IOException, IllegalArgumentException;
|
1211 |
|
|
|
1212 |
|
|
public abstract double get(String name, double defvalue)
|
1213 |
|
|
throws IOException, IllegalArgumentException;
|
1214 |
|
|
|
1215 |
|
|
public abstract Object get(String name, Object defvalue)
|
1216 |
|
|
throws IOException, IllegalArgumentException;
|
1217 |
|
|
}
|
1218 |
|
|
|
1219 |
|
|
/**
|
1220 |
|
|
* This method should be called by a method called 'readObject' in the
|
1221 |
|
|
* deserializing class (if present). It cannot (and should not)be called
|
1222 |
|
|
* outside of it. Its goal is to read all fields in the real input stream
|
1223 |
|
|
* and keep them accessible through the {@link GetField} class. Calling
|
1224 |
|
|
* this method will not alter the deserializing object.
|
1225 |
|
|
*
|
1226 |
|
|
* @return A valid freshly created 'GetField' instance to get access to
|
1227 |
|
|
* the deserialized stream.
|
1228 |
|
|
* @throws IOException An input/output exception occured.
|
1229 |
|
|
* @throws ClassNotFoundException
|
1230 |
|
|
* @throws NotActiveException
|
1231 |
|
|
*/
|
1232 |
|
|
public GetField readFields()
|
1233 |
|
|
throws IOException, ClassNotFoundException, NotActiveException
|
1234 |
|
|
{
|
1235 |
|
|
if (this.currentObject == null || this.currentObjectStreamClass == null)
|
1236 |
|
|
throw new NotActiveException("readFields called by non-active class and/or object");
|
1237 |
|
|
|
1238 |
|
|
if (prereadFields != null)
|
1239 |
|
|
return prereadFields;
|
1240 |
|
|
|
1241 |
|
|
if (fieldsAlreadyRead)
|
1242 |
|
|
throw new NotActiveException("readFields called but fields already read from"
|
1243 |
|
|
+ " stream (by defaultReadObject or readFields)");
|
1244 |
|
|
|
1245 |
|
|
final ObjectStreamClass clazz = this.currentObjectStreamClass;
|
1246 |
|
|
final byte[] prim_field_data = new byte[clazz.primFieldSize];
|
1247 |
|
|
final Object[] objs = new Object[clazz.objectFieldCount];
|
1248 |
|
|
|
1249 |
|
|
// Apparently Block data is not used with GetField as per
|
1250 |
|
|
// empirical evidence against JDK 1.2. Also see Mauve test
|
1251 |
|
|
// java.io.ObjectInputOutput.Test.GetPutField.
|
1252 |
|
|
boolean oldmode = setBlockDataMode(false);
|
1253 |
|
|
readFully(prim_field_data);
|
1254 |
|
|
for (int i = 0; i < objs.length; ++ i)
|
1255 |
|
|
objs[i] = readObject();
|
1256 |
|
|
setBlockDataMode(oldmode);
|
1257 |
|
|
|
1258 |
|
|
prereadFields = new GetField()
|
1259 |
|
|
{
|
1260 |
|
|
public ObjectStreamClass getObjectStreamClass()
|
1261 |
|
|
{
|
1262 |
|
|
return clazz;
|
1263 |
|
|
}
|
1264 |
|
|
|
1265 |
|
|
public boolean defaulted(String name)
|
1266 |
|
|
throws IOException, IllegalArgumentException
|
1267 |
|
|
{
|
1268 |
|
|
ObjectStreamField f = clazz.getField(name);
|
1269 |
|
|
|
1270 |
|
|
/* First if we have a serialized field use the descriptor */
|
1271 |
|
|
if (f != null)
|
1272 |
|
|
{
|
1273 |
|
|
/* It is in serialPersistentFields but setClass tells us
|
1274 |
|
|
* it should not be set. This value is defaulted.
|
1275 |
|
|
*/
|
1276 |
|
|
if (f.isPersistent() && !f.isToSet())
|
1277 |
|
|
return true;
|
1278 |
|
|
|
1279 |
|
|
return false;
|
1280 |
|
|
}
|
1281 |
|
|
|
1282 |
|
|
/* This is not a serialized field. There should be
|
1283 |
|
|
* a default value only if the field really exists.
|
1284 |
|
|
*/
|
1285 |
|
|
try
|
1286 |
|
|
{
|
1287 |
|
|
return (clazz.forClass().getDeclaredField (name) != null);
|
1288 |
|
|
}
|
1289 |
|
|
catch (NoSuchFieldException e)
|
1290 |
|
|
{
|
1291 |
|
|
throw new IllegalArgumentException(e);
|
1292 |
|
|
}
|
1293 |
|
|
}
|
1294 |
|
|
|
1295 |
|
|
public boolean get(String name, boolean defvalue)
|
1296 |
|
|
throws IOException, IllegalArgumentException
|
1297 |
|
|
{
|
1298 |
|
|
ObjectStreamField field = getField(name, Boolean.TYPE);
|
1299 |
|
|
|
1300 |
|
|
if (field == null)
|
1301 |
|
|
return defvalue;
|
1302 |
|
|
|
1303 |
|
|
return prim_field_data[field.getOffset()] == 0 ? false : true;
|
1304 |
|
|
}
|
1305 |
|
|
|
1306 |
|
|
public char get(String name, char defvalue)
|
1307 |
|
|
throws IOException, IllegalArgumentException
|
1308 |
|
|
{
|
1309 |
|
|
ObjectStreamField field = getField(name, Character.TYPE);
|
1310 |
|
|
|
1311 |
|
|
if (field == null)
|
1312 |
|
|
return defvalue;
|
1313 |
|
|
|
1314 |
|
|
int off = field.getOffset();
|
1315 |
|
|
|
1316 |
|
|
return (char)(((prim_field_data[off++] & 0xFF) << 8)
|
1317 |
|
|
| (prim_field_data[off] & 0xFF));
|
1318 |
|
|
}
|
1319 |
|
|
|
1320 |
|
|
public byte get(String name, byte defvalue)
|
1321 |
|
|
throws IOException, IllegalArgumentException
|
1322 |
|
|
{
|
1323 |
|
|
ObjectStreamField field = getField(name, Byte.TYPE);
|
1324 |
|
|
|
1325 |
|
|
if (field == null)
|
1326 |
|
|
return defvalue;
|
1327 |
|
|
|
1328 |
|
|
return prim_field_data[field.getOffset()];
|
1329 |
|
|
}
|
1330 |
|
|
|
1331 |
|
|
public short get(String name, short defvalue)
|
1332 |
|
|
throws IOException, IllegalArgumentException
|
1333 |
|
|
{
|
1334 |
|
|
ObjectStreamField field = getField(name, Short.TYPE);
|
1335 |
|
|
|
1336 |
|
|
if (field == null)
|
1337 |
|
|
return defvalue;
|
1338 |
|
|
|
1339 |
|
|
int off = field.getOffset();
|
1340 |
|
|
|
1341 |
|
|
return (short)(((prim_field_data[off++] & 0xFF) << 8)
|
1342 |
|
|
| (prim_field_data[off] & 0xFF));
|
1343 |
|
|
}
|
1344 |
|
|
|
1345 |
|
|
public int get(String name, int defvalue)
|
1346 |
|
|
throws IOException, IllegalArgumentException
|
1347 |
|
|
{
|
1348 |
|
|
ObjectStreamField field = getField(name, Integer.TYPE);
|
1349 |
|
|
|
1350 |
|
|
if (field == null)
|
1351 |
|
|
return defvalue;
|
1352 |
|
|
|
1353 |
|
|
int off = field.getOffset();
|
1354 |
|
|
|
1355 |
|
|
return ((prim_field_data[off++] & 0xFF) << 24)
|
1356 |
|
|
| ((prim_field_data[off++] & 0xFF) << 16)
|
1357 |
|
|
| ((prim_field_data[off++] & 0xFF) << 8)
|
1358 |
|
|
| (prim_field_data[off] & 0xFF);
|
1359 |
|
|
}
|
1360 |
|
|
|
1361 |
|
|
public long get(String name, long defvalue)
|
1362 |
|
|
throws IOException, IllegalArgumentException
|
1363 |
|
|
{
|
1364 |
|
|
ObjectStreamField field = getField(name, Long.TYPE);
|
1365 |
|
|
|
1366 |
|
|
if (field == null)
|
1367 |
|
|
return defvalue;
|
1368 |
|
|
|
1369 |
|
|
int off = field.getOffset();
|
1370 |
|
|
|
1371 |
|
|
return (long)(((prim_field_data[off++] & 0xFFL) << 56)
|
1372 |
|
|
| ((prim_field_data[off++] & 0xFFL) << 48)
|
1373 |
|
|
| ((prim_field_data[off++] & 0xFFL) << 40)
|
1374 |
|
|
| ((prim_field_data[off++] & 0xFFL) << 32)
|
1375 |
|
|
| ((prim_field_data[off++] & 0xFF) << 24)
|
1376 |
|
|
| ((prim_field_data[off++] & 0xFF) << 16)
|
1377 |
|
|
| ((prim_field_data[off++] & 0xFF) << 8)
|
1378 |
|
|
| (prim_field_data[off] & 0xFF));
|
1379 |
|
|
}
|
1380 |
|
|
|
1381 |
|
|
public float get(String name, float defvalue)
|
1382 |
|
|
throws IOException, IllegalArgumentException
|
1383 |
|
|
{
|
1384 |
|
|
ObjectStreamField field = getField(name, Float.TYPE);
|
1385 |
|
|
|
1386 |
|
|
if (field == null)
|
1387 |
|
|
return defvalue;
|
1388 |
|
|
|
1389 |
|
|
int off = field.getOffset();
|
1390 |
|
|
|
1391 |
|
|
return Float.intBitsToFloat(((prim_field_data[off++] & 0xFF) << 24)
|
1392 |
|
|
| ((prim_field_data[off++] & 0xFF) << 16)
|
1393 |
|
|
| ((prim_field_data[off++] & 0xFF) << 8)
|
1394 |
|
|
| (prim_field_data[off] & 0xFF));
|
1395 |
|
|
}
|
1396 |
|
|
|
1397 |
|
|
public double get(String name, double defvalue)
|
1398 |
|
|
throws IOException, IllegalArgumentException
|
1399 |
|
|
{
|
1400 |
|
|
ObjectStreamField field = getField(name, Double.TYPE);
|
1401 |
|
|
|
1402 |
|
|
if (field == null)
|
1403 |
|
|
return defvalue;
|
1404 |
|
|
|
1405 |
|
|
int off = field.getOffset();
|
1406 |
|
|
|
1407 |
|
|
return Double.longBitsToDouble
|
1408 |
|
|
( (long) (((prim_field_data[off++] & 0xFFL) << 56)
|
1409 |
|
|
| ((prim_field_data[off++] & 0xFFL) << 48)
|
1410 |
|
|
| ((prim_field_data[off++] & 0xFFL) << 40)
|
1411 |
|
|
| ((prim_field_data[off++] & 0xFFL) << 32)
|
1412 |
|
|
| ((prim_field_data[off++] & 0xFF) << 24)
|
1413 |
|
|
| ((prim_field_data[off++] & 0xFF) << 16)
|
1414 |
|
|
| ((prim_field_data[off++] & 0xFF) << 8)
|
1415 |
|
|
| (prim_field_data[off] & 0xFF)));
|
1416 |
|
|
}
|
1417 |
|
|
|
1418 |
|
|
public Object get(String name, Object defvalue)
|
1419 |
|
|
throws IOException, IllegalArgumentException
|
1420 |
|
|
{
|
1421 |
|
|
ObjectStreamField field =
|
1422 |
|
|
getField(name, defvalue == null ? null : defvalue.getClass ());
|
1423 |
|
|
|
1424 |
|
|
if (field == null)
|
1425 |
|
|
return defvalue;
|
1426 |
|
|
|
1427 |
|
|
return objs[field.getOffset()];
|
1428 |
|
|
}
|
1429 |
|
|
|
1430 |
|
|
private ObjectStreamField getField(String name, Class type)
|
1431 |
|
|
throws IllegalArgumentException
|
1432 |
|
|
{
|
1433 |
|
|
ObjectStreamField field = clazz.getField(name);
|
1434 |
|
|
boolean illegal = false;
|
1435 |
|
|
|
1436 |
|
|
// XXX This code is horrible and needs to be rewritten!
|
1437 |
|
|
try
|
1438 |
|
|
{
|
1439 |
|
|
try
|
1440 |
|
|
{
|
1441 |
|
|
Class field_type = field.getType();
|
1442 |
|
|
|
1443 |
|
|
if (type == field_type ||
|
1444 |
|
|
(type == null && !field_type.isPrimitive()))
|
1445 |
|
|
{
|
1446 |
|
|
/* See defaulted */
|
1447 |
|
|
return field;
|
1448 |
|
|
}
|
1449 |
|
|
|
1450 |
|
|
illegal = true;
|
1451 |
|
|
throw new IllegalArgumentException
|
1452 |
|
|
("Field requested is of type "
|
1453 |
|
|
+ field_type.getName()
|
1454 |
|
|
+ ", but requested type was "
|
1455 |
|
|
+ (type == null ? "Object" : type.getName()));
|
1456 |
|
|
}
|
1457 |
|
|
catch (NullPointerException _)
|
1458 |
|
|
{
|
1459 |
|
|
/* Here we catch NullPointerException, because it may
|
1460 |
|
|
only come from the call 'field.getType()'. If field
|
1461 |
|
|
is null, we have to return null and classpath ethic
|
1462 |
|
|
say we must try to avoid 'if (xxx == null)'.
|
1463 |
|
|
*/
|
1464 |
|
|
}
|
1465 |
|
|
catch (IllegalArgumentException e)
|
1466 |
|
|
{
|
1467 |
|
|
throw e;
|
1468 |
|
|
}
|
1469 |
|
|
|
1470 |
|
|
return null;
|
1471 |
|
|
}
|
1472 |
|
|
finally
|
1473 |
|
|
{
|
1474 |
|
|
/* If this is an unassigned field we should return
|
1475 |
|
|
* the default value.
|
1476 |
|
|
*/
|
1477 |
|
|
if (!illegal && field != null && !field.isToSet() && field.isPersistent())
|
1478 |
|
|
return null;
|
1479 |
|
|
|
1480 |
|
|
/* We do not want to modify transient fields. They should
|
1481 |
|
|
* be left to 0.
|
1482 |
|
|
*/
|
1483 |
|
|
try
|
1484 |
|
|
{
|
1485 |
|
|
Field f = clazz.forClass().getDeclaredField(name);
|
1486 |
|
|
if (Modifier.isTransient(f.getModifiers()))
|
1487 |
|
|
throw new IllegalArgumentException
|
1488 |
|
|
("no such field (non transient) " + name);
|
1489 |
|
|
if (field == null && f.getType() != type)
|
1490 |
|
|
throw new IllegalArgumentException
|
1491 |
|
|
("Invalid requested type for field " + name);
|
1492 |
|
|
}
|
1493 |
|
|
catch (NoSuchFieldException e)
|
1494 |
|
|
{
|
1495 |
|
|
if (field == null)
|
1496 |
|
|
throw new IllegalArgumentException(e);
|
1497 |
|
|
}
|
1498 |
|
|
|
1499 |
|
|
}
|
1500 |
|
|
}
|
1501 |
|
|
};
|
1502 |
|
|
|
1503 |
|
|
fieldsAlreadyRead = true;
|
1504 |
|
|
return prereadFields;
|
1505 |
|
|
}
|
1506 |
|
|
|
1507 |
|
|
/**
|
1508 |
|
|
* Protected constructor that allows subclasses to override
|
1509 |
|
|
* deserialization. This constructor should be called by subclasses
|
1510 |
|
|
* that wish to override <code>readObject (Object)</code>. This
|
1511 |
|
|
* method does a security check <i>NOTE: currently not
|
1512 |
|
|
* implemented</i>, then sets a flag that informs
|
1513 |
|
|
* <code>readObject (Object)</code> to call the subclasses
|
1514 |
|
|
* <code>readObjectOverride (Object)</code> method.
|
1515 |
|
|
*
|
1516 |
|
|
* @see #readObjectOverride()
|
1517 |
|
|
*/
|
1518 |
|
|
protected ObjectInputStream()
|
1519 |
|
|
throws IOException, SecurityException
|
1520 |
|
|
{
|
1521 |
|
|
SecurityManager sec_man = System.getSecurityManager();
|
1522 |
|
|
if (sec_man != null)
|
1523 |
|
|
sec_man.checkPermission(SUBCLASS_IMPLEMENTATION_PERMISSION);
|
1524 |
|
|
this.useSubclassMethod = true;
|
1525 |
|
|
}
|
1526 |
|
|
|
1527 |
|
|
/**
|
1528 |
|
|
* This method allows subclasses to override the default
|
1529 |
|
|
* de serialization mechanism provided by
|
1530 |
|
|
* <code>ObjectInputStream</code>. To make this method be used for
|
1531 |
|
|
* writing objects, subclasses must invoke the 0-argument
|
1532 |
|
|
* constructor on this class from their constructor.
|
1533 |
|
|
*
|
1534 |
|
|
* @see #ObjectInputStream()
|
1535 |
|
|
*/
|
1536 |
|
|
protected Object readObjectOverride()
|
1537 |
|
|
throws ClassNotFoundException, IOException, OptionalDataException
|
1538 |
|
|
{
|
1539 |
|
|
throw new IOException("Subclass of ObjectInputStream must implement readObjectOverride");
|
1540 |
|
|
}
|
1541 |
|
|
|
1542 |
|
|
/**
|
1543 |
|
|
* Assigns the next available handle to <code>obj</code>.
|
1544 |
|
|
*
|
1545 |
|
|
* @param obj The object for which we want a new handle.
|
1546 |
|
|
* @return A valid handle for the specified object.
|
1547 |
|
|
*/
|
1548 |
|
|
private int assignNewHandle(Object obj)
|
1549 |
|
|
{
|
1550 |
|
|
this.objectLookupTable.put(new Integer(this.nextOID),
|
1551 |
|
|
new ObjectIdentityWrapper(obj));
|
1552 |
|
|
return this.nextOID++;
|
1553 |
|
|
}
|
1554 |
|
|
|
1555 |
|
|
private Object processResolution(ObjectStreamClass osc, Object obj, int handle)
|
1556 |
|
|
throws IOException
|
1557 |
|
|
{
|
1558 |
|
|
if (osc != null && obj instanceof Serializable)
|
1559 |
|
|
{
|
1560 |
|
|
try
|
1561 |
|
|
{
|
1562 |
|
|
Method m = osc.readResolveMethod;
|
1563 |
|
|
if(m != null)
|
1564 |
|
|
{
|
1565 |
|
|
obj = m.invoke(obj, new Object[] {});
|
1566 |
|
|
}
|
1567 |
|
|
}
|
1568 |
|
|
catch (IllegalAccessException ignore)
|
1569 |
|
|
{
|
1570 |
|
|
}
|
1571 |
|
|
catch (InvocationTargetException exception)
|
1572 |
|
|
{
|
1573 |
|
|
Throwable cause = exception.getCause();
|
1574 |
|
|
if (cause instanceof ObjectStreamException)
|
1575 |
|
|
throw (ObjectStreamException) cause;
|
1576 |
|
|
else if (cause instanceof RuntimeException)
|
1577 |
|
|
throw (RuntimeException) cause;
|
1578 |
|
|
else if (cause instanceof Error)
|
1579 |
|
|
throw (Error) cause;
|
1580 |
|
|
}
|
1581 |
|
|
}
|
1582 |
|
|
|
1583 |
|
|
if (this.resolveEnabled)
|
1584 |
|
|
obj = resolveObject(obj);
|
1585 |
|
|
|
1586 |
|
|
this.objectLookupTable.put(new Integer(handle),
|
1587 |
|
|
new ObjectIdentityWrapper(obj));
|
1588 |
|
|
|
1589 |
|
|
return obj;
|
1590 |
|
|
}
|
1591 |
|
|
|
1592 |
|
|
private void clearHandles()
|
1593 |
|
|
{
|
1594 |
|
|
this.objectLookupTable.clear();
|
1595 |
|
|
this.nextOID = baseWireHandle;
|
1596 |
|
|
}
|
1597 |
|
|
|
1598 |
|
|
private void readNextBlock() throws IOException
|
1599 |
|
|
{
|
1600 |
|
|
readNextBlock(this.realInputStream.readByte());
|
1601 |
|
|
}
|
1602 |
|
|
|
1603 |
|
|
private void readNextBlock(byte marker) throws IOException
|
1604 |
|
|
{
|
1605 |
|
|
if (marker == TC_BLOCKDATA)
|
1606 |
|
|
{
|
1607 |
|
|
if(dump) dumpElement("BLOCK DATA SIZE=");
|
1608 |
|
|
this.blockDataBytes = this.realInputStream.readUnsignedByte();
|
1609 |
|
|
if(dump) dumpElementln (Integer.toString(this.blockDataBytes));
|
1610 |
|
|
}
|
1611 |
|
|
else if (marker == TC_BLOCKDATALONG)
|
1612 |
|
|
{
|
1613 |
|
|
if(dump) dumpElement("BLOCK DATA LONG SIZE=");
|
1614 |
|
|
this.blockDataBytes = this.realInputStream.readInt();
|
1615 |
|
|
if(dump) dumpElementln (Integer.toString(this.blockDataBytes));
|
1616 |
|
|
}
|
1617 |
|
|
else
|
1618 |
|
|
{
|
1619 |
|
|
throw new EOFException("Attempt to read primitive data, but no data block is active.");
|
1620 |
|
|
}
|
1621 |
|
|
|
1622 |
|
|
if (this.blockData.length < this.blockDataBytes)
|
1623 |
|
|
this.blockData = new byte[this.blockDataBytes];
|
1624 |
|
|
|
1625 |
|
|
this.realInputStream.readFully (this.blockData, 0, this.blockDataBytes);
|
1626 |
|
|
this.blockDataPosition = 0;
|
1627 |
|
|
}
|
1628 |
|
|
|
1629 |
|
|
private void readArrayElements (Object array, Class clazz)
|
1630 |
|
|
throws ClassNotFoundException, IOException
|
1631 |
|
|
{
|
1632 |
|
|
if (clazz.isPrimitive())
|
1633 |
|
|
{
|
1634 |
|
|
if (clazz == Boolean.TYPE)
|
1635 |
|
|
{
|
1636 |
|
|
boolean[] cast_array = (boolean[])array;
|
1637 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1638 |
|
|
cast_array[i] = this.realInputStream.readBoolean();
|
1639 |
|
|
return;
|
1640 |
|
|
}
|
1641 |
|
|
if (clazz == Byte.TYPE)
|
1642 |
|
|
{
|
1643 |
|
|
byte[] cast_array = (byte[])array;
|
1644 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1645 |
|
|
cast_array[i] = this.realInputStream.readByte();
|
1646 |
|
|
return;
|
1647 |
|
|
}
|
1648 |
|
|
if (clazz == Character.TYPE)
|
1649 |
|
|
{
|
1650 |
|
|
char[] cast_array = (char[])array;
|
1651 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1652 |
|
|
cast_array[i] = this.realInputStream.readChar();
|
1653 |
|
|
return;
|
1654 |
|
|
}
|
1655 |
|
|
if (clazz == Double.TYPE)
|
1656 |
|
|
{
|
1657 |
|
|
double[] cast_array = (double[])array;
|
1658 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1659 |
|
|
cast_array[i] = this.realInputStream.readDouble();
|
1660 |
|
|
return;
|
1661 |
|
|
}
|
1662 |
|
|
if (clazz == Float.TYPE)
|
1663 |
|
|
{
|
1664 |
|
|
float[] cast_array = (float[])array;
|
1665 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1666 |
|
|
cast_array[i] = this.realInputStream.readFloat();
|
1667 |
|
|
return;
|
1668 |
|
|
}
|
1669 |
|
|
if (clazz == Integer.TYPE)
|
1670 |
|
|
{
|
1671 |
|
|
int[] cast_array = (int[])array;
|
1672 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1673 |
|
|
cast_array[i] = this.realInputStream.readInt();
|
1674 |
|
|
return;
|
1675 |
|
|
}
|
1676 |
|
|
if (clazz == Long.TYPE)
|
1677 |
|
|
{
|
1678 |
|
|
long[] cast_array = (long[])array;
|
1679 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1680 |
|
|
cast_array[i] = this.realInputStream.readLong();
|
1681 |
|
|
return;
|
1682 |
|
|
}
|
1683 |
|
|
if (clazz == Short.TYPE)
|
1684 |
|
|
{
|
1685 |
|
|
short[] cast_array = (short[])array;
|
1686 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1687 |
|
|
cast_array[i] = this.realInputStream.readShort();
|
1688 |
|
|
return;
|
1689 |
|
|
}
|
1690 |
|
|
}
|
1691 |
|
|
else
|
1692 |
|
|
{
|
1693 |
|
|
Object[] cast_array = (Object[])array;
|
1694 |
|
|
for (int i=0; i < cast_array.length; i++)
|
1695 |
|
|
cast_array[i] = readObject();
|
1696 |
|
|
}
|
1697 |
|
|
}
|
1698 |
|
|
|
1699 |
|
|
private void readFields (Object obj, ObjectStreamClass stream_osc)
|
1700 |
|
|
throws ClassNotFoundException, IOException
|
1701 |
|
|
{
|
1702 |
|
|
ObjectStreamField[] fields = stream_osc.fieldMapping;
|
1703 |
|
|
|
1704 |
|
|
for (int i = 0; i < fields.length; i += 2)
|
1705 |
|
|
{
|
1706 |
|
|
ObjectStreamField stream_field = fields[i];
|
1707 |
|
|
ObjectStreamField real_field = fields[i + 1];
|
1708 |
|
|
boolean read_value = (stream_field != null && stream_field.getOffset() >= 0 && stream_field.isToSet());
|
1709 |
|
|
boolean set_value = (real_field != null && real_field.isToSet());
|
1710 |
|
|
String field_name;
|
1711 |
|
|
char type;
|
1712 |
|
|
|
1713 |
|
|
if (stream_field != null)
|
1714 |
|
|
{
|
1715 |
|
|
field_name = stream_field.getName();
|
1716 |
|
|
type = stream_field.getTypeCode();
|
1717 |
|
|
}
|
1718 |
|
|
else
|
1719 |
|
|
{
|
1720 |
|
|
field_name = real_field.getName();
|
1721 |
|
|
type = real_field.getTypeCode();
|
1722 |
|
|
}
|
1723 |
|
|
|
1724 |
|
|
switch(type)
|
1725 |
|
|
{
|
1726 |
|
|
case 'Z':
|
1727 |
|
|
{
|
1728 |
|
|
boolean value =
|
1729 |
|
|
read_value ? this.realInputStream.readBoolean() : false;
|
1730 |
|
|
if (dump && read_value && set_value)
|
1731 |
|
|
dumpElementln(" " + field_name + ": " + value);
|
1732 |
|
|
if (set_value)
|
1733 |
|
|
real_field.setBooleanField(obj, value);
|
1734 |
|
|
break;
|
1735 |
|
|
}
|
1736 |
|
|
case 'B':
|
1737 |
|
|
{
|
1738 |
|
|
byte value =
|
1739 |
|
|
read_value ? this.realInputStream.readByte() : 0;
|
1740 |
|
|
if (dump && read_value && set_value)
|
1741 |
|
|
dumpElementln(" " + field_name + ": " + value);
|
1742 |
|
|
if (set_value)
|
1743 |
|
|
real_field.setByteField(obj, value);
|
1744 |
|
|
break;
|
1745 |
|
|
}
|
1746 |
|
|
case 'C':
|
1747 |
|
|
{
|
1748 |
|
|
char value =
|
1749 |
|
|
read_value ? this.realInputStream.readChar(): 0;
|
1750 |
|
|
if (dump && read_value && set_value)
|
1751 |
|
|
dumpElementln(" " + field_name + ": " + value);
|
1752 |
|
|
if (set_value)
|
1753 |
|
|
real_field.setCharField(obj, value);
|
1754 |
|
|
break;
|
1755 |
|
|
}
|
1756 |
|
|
case 'D':
|
1757 |
|
|
{
|
1758 |
|
|
double value =
|
1759 |
|
|
read_value ? this.realInputStream.readDouble() : 0;
|
1760 |
|
|
if (dump && read_value && set_value)
|
1761 |
|
|
dumpElementln(" " + field_name + ": " + value);
|
1762 |
|
|
if (set_value)
|
1763 |
|
|
real_field.setDoubleField(obj, value);
|
1764 |
|
|
break;
|
1765 |
|
|
}
|
1766 |
|
|
case 'F':
|
1767 |
|
|
{
|
1768 |
|
|
float value =
|
1769 |
|
|
read_value ? this.realInputStream.readFloat() : 0;
|
1770 |
|
|
if (dump && read_value && set_value)
|
1771 |
|
|
dumpElementln(" " + field_name + ": " + value);
|
1772 |
|
|
if (set_value)
|
1773 |
|
|
real_field.setFloatField(obj, value);
|
1774 |
|
|
break;
|
1775 |
|
|
}
|
1776 |
|
|
case 'I':
|
1777 |
|
|
{
|
1778 |
|
|
int value =
|
1779 |
|
|
read_value ? this.realInputStream.readInt() : 0;
|
1780 |
|
|
if (dump && read_value && set_value)
|
1781 |
|
|
dumpElementln(" " + field_name + ": " + value);
|
1782 |
|
|
if (set_value)
|
1783 |
|
|
real_field.setIntField(obj, value);
|
1784 |
|
|
break;
|
1785 |
|
|
}
|
1786 |
|
|
case 'J':
|
1787 |
|
|
{
|
1788 |
|
|
long value =
|
1789 |
|
|
read_value ? this.realInputStream.readLong() : 0;
|
1790 |
|
|
if (dump && read_value && set_value)
|
1791 |
|
|
dumpElementln(" " + field_name + ": " + value);
|
1792 |
|
|
if (set_value)
|
1793 |
|
|
real_field.setLongField(obj, value);
|
1794 |
|
|
break;
|
1795 |
|
|
}
|
1796 |
|
|
case 'S':
|
1797 |
|
|
{
|
1798 |
|
|
short value =
|
1799 |
|
|
read_value ? this.realInputStream.readShort() : 0;
|
1800 |
|
|
if (dump && read_value && set_value)
|
1801 |
|
|
dumpElementln(" " + field_name + ": " + value);
|
1802 |
|
|
if (set_value)
|
1803 |
|
|
real_field.setShortField(obj, value);
|
1804 |
|
|
break;
|
1805 |
|
|
}
|
1806 |
|
|
case 'L':
|
1807 |
|
|
case '[':
|
1808 |
|
|
{
|
1809 |
|
|
Object value =
|
1810 |
|
|
read_value ? readObject() : null;
|
1811 |
|
|
if (set_value)
|
1812 |
|
|
real_field.setObjectField(obj, value);
|
1813 |
|
|
break;
|
1814 |
|
|
}
|
1815 |
|
|
default:
|
1816 |
|
|
throw new InternalError("Invalid type code: " + type);
|
1817 |
|
|
}
|
1818 |
|
|
}
|
1819 |
|
|
}
|
1820 |
|
|
|
1821 |
|
|
// Toggles writing primitive data to block-data buffer.
|
1822 |
|
|
private boolean setBlockDataMode (boolean on)
|
1823 |
|
|
{
|
1824 |
|
|
boolean oldmode = this.readDataFromBlock;
|
1825 |
|
|
this.readDataFromBlock = on;
|
1826 |
|
|
|
1827 |
|
|
if (on)
|
1828 |
|
|
this.dataInputStream = this.blockDataInput;
|
1829 |
|
|
else
|
1830 |
|
|
this.dataInputStream = this.realInputStream;
|
1831 |
|
|
return oldmode;
|
1832 |
|
|
}
|
1833 |
|
|
|
1834 |
|
|
// returns a new instance of REAL_CLASS that has been constructed
|
1835 |
|
|
// only to the level of CONSTRUCTOR_CLASS (a super class of REAL_CLASS)
|
1836 |
|
|
private Object newObject (Class real_class, Constructor constructor)
|
1837 |
|
|
throws ClassNotFoundException, IOException
|
1838 |
|
|
{
|
1839 |
|
|
if (constructor == null)
|
1840 |
|
|
throw new InvalidClassException("Missing accessible no-arg base class constructor for " + real_class.getName());
|
1841 |
|
|
try
|
1842 |
|
|
{
|
1843 |
|
|
return VMObjectInputStream.allocateObject(real_class, constructor.getDeclaringClass(), constructor);
|
1844 |
|
|
}
|
1845 |
|
|
catch (InstantiationException e)
|
1846 |
|
|
{
|
1847 |
|
|
throw (ClassNotFoundException) new ClassNotFoundException
|
1848 |
|
|
("Instance of " + real_class + " could not be created").initCause(e);
|
1849 |
|
|
}
|
1850 |
|
|
}
|
1851 |
|
|
|
1852 |
|
|
// runs all registered ObjectInputValidations in prioritized order
|
1853 |
|
|
// on OBJ
|
1854 |
|
|
private void invokeValidators() throws InvalidObjectException
|
1855 |
|
|
{
|
1856 |
|
|
try
|
1857 |
|
|
{
|
1858 |
|
|
Iterator it = currentObjectValidators.iterator();
|
1859 |
|
|
while(it.hasNext())
|
1860 |
|
|
{
|
1861 |
|
|
ValidatorAndPriority vap = (ValidatorAndPriority) it.next();
|
1862 |
|
|
ObjectInputValidation validator = vap.validator;
|
1863 |
|
|
validator.validateObject();
|
1864 |
|
|
}
|
1865 |
|
|
}
|
1866 |
|
|
finally
|
1867 |
|
|
{
|
1868 |
|
|
currentObjectValidators = null;
|
1869 |
|
|
}
|
1870 |
|
|
}
|
1871 |
|
|
|
1872 |
|
|
private void callReadMethod (Method readObject, Class klass, Object obj)
|
1873 |
|
|
throws ClassNotFoundException, IOException
|
1874 |
|
|
{
|
1875 |
|
|
try
|
1876 |
|
|
{
|
1877 |
|
|
readObject.invoke(obj, new Object[] { this });
|
1878 |
|
|
}
|
1879 |
|
|
catch (InvocationTargetException x)
|
1880 |
|
|
{
|
1881 |
|
|
/* Rethrow if possible. */
|
1882 |
|
|
Throwable exception = x.getTargetException();
|
1883 |
|
|
if (exception instanceof RuntimeException)
|
1884 |
|
|
throw (RuntimeException) exception;
|
1885 |
|
|
if (exception instanceof IOException)
|
1886 |
|
|
throw (IOException) exception;
|
1887 |
|
|
if (exception instanceof ClassNotFoundException)
|
1888 |
|
|
throw (ClassNotFoundException) exception;
|
1889 |
|
|
|
1890 |
|
|
throw (IOException) new IOException(
|
1891 |
|
|
"Exception thrown from readObject() on " + klass).initCause(x);
|
1892 |
|
|
}
|
1893 |
|
|
catch (Exception x)
|
1894 |
|
|
{
|
1895 |
|
|
throw (IOException) new IOException(
|
1896 |
|
|
"Failure invoking readObject() on " + klass).initCause(x);
|
1897 |
|
|
}
|
1898 |
|
|
|
1899 |
|
|
// Invalidate fields which has been read through readFields.
|
1900 |
|
|
prereadFields = null;
|
1901 |
|
|
}
|
1902 |
|
|
|
1903 |
|
|
private static final int BUFFER_SIZE = 1024;
|
1904 |
|
|
|
1905 |
|
|
private DataInputStream realInputStream;
|
1906 |
|
|
private DataInputStream dataInputStream;
|
1907 |
|
|
private DataInputStream blockDataInput;
|
1908 |
|
|
private int blockDataPosition;
|
1909 |
|
|
private int blockDataBytes;
|
1910 |
|
|
private byte[] blockData;
|
1911 |
|
|
private boolean useSubclassMethod;
|
1912 |
|
|
private int nextOID;
|
1913 |
|
|
private boolean resolveEnabled;
|
1914 |
|
|
private Hashtable objectLookupTable;
|
1915 |
|
|
private Object currentObject;
|
1916 |
|
|
private ObjectStreamClass currentObjectStreamClass;
|
1917 |
|
|
private TreeSet currentObjectValidators;
|
1918 |
|
|
private boolean readDataFromBlock;
|
1919 |
|
|
private boolean fieldsAlreadyRead;
|
1920 |
|
|
private Hashtable classLookupTable;
|
1921 |
|
|
private GetField prereadFields;
|
1922 |
|
|
|
1923 |
|
|
private static boolean dump;
|
1924 |
|
|
|
1925 |
|
|
// The nesting depth for debugging output
|
1926 |
|
|
private int depth = 0;
|
1927 |
|
|
|
1928 |
|
|
private static final boolean DEBUG = false;
|
1929 |
|
|
|
1930 |
|
|
private void dumpElement (String msg)
|
1931 |
|
|
{
|
1932 |
|
|
System.out.print(msg);
|
1933 |
|
|
}
|
1934 |
|
|
|
1935 |
|
|
private void dumpElementln (String msg)
|
1936 |
|
|
{
|
1937 |
|
|
System.out.println(msg);
|
1938 |
|
|
for (int i = 0; i < depth; i++)
|
1939 |
|
|
System.out.print (" ");
|
1940 |
|
|
System.out.print (Thread.currentThread() + ": ");
|
1941 |
|
|
}
|
1942 |
|
|
|
1943 |
|
|
// used to keep a prioritized list of object validators
|
1944 |
|
|
private static final class ValidatorAndPriority implements Comparable
|
1945 |
|
|
{
|
1946 |
|
|
int priority;
|
1947 |
|
|
ObjectInputValidation validator;
|
1948 |
|
|
|
1949 |
|
|
ValidatorAndPriority (ObjectInputValidation validator, int priority)
|
1950 |
|
|
{
|
1951 |
|
|
this.priority = priority;
|
1952 |
|
|
this.validator = validator;
|
1953 |
|
|
}
|
1954 |
|
|
|
1955 |
|
|
public int compareTo (Object o)
|
1956 |
|
|
{
|
1957 |
|
|
ValidatorAndPriority vap = (ValidatorAndPriority)o;
|
1958 |
|
|
return this.priority - vap.priority;
|
1959 |
|
|
}
|
1960 |
|
|
}
|
1961 |
|
|
}
|
1962 |
|
|
|