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/*
* Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 4228592
* @summary Ensure that ObjectInputStream properly skips over block data when a
* class that defines readObject() or readExternal() fails to read all
* of the data written by the corresponding writeObject() or
* writeExternal() method.
*/
import java.io.*;
class MismatchedRead implements Serializable {
private static final long serialVersionUID = 1L;
int i;
float f;
MismatchedRead(int i, float f) {
this.i = i;
this.f = f;
}
private void writeObject(ObjectOutputStream out) throws IOException {
out.writeInt(i);
out.writeFloat(f);
out.writeUTF("skip me");
}
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException
{
i = in.readInt();
f = in.readFloat();
}
public boolean equals(Object obj) {
if (! (obj instanceof MismatchedRead))
return false;
MismatchedRead other = (MismatchedRead) obj;
return (i == other.i && f == other.f);
}
public int hashCode() {
return i;
}
}
class MismatchedReadExternal implements Externalizable {
private static final long serialVersionUID = 1L;
int i;
float f;
public MismatchedReadExternal() {
this(0, (float) 0.0);
}
MismatchedReadExternal(int i, float f) {
this.i = i;
this.f = f;
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeInt(i);
out.writeFloat(f);
out.writeUTF("skip another");
}
public void readExternal(ObjectInput in) throws IOException {
i = in.readInt();
f = in.readFloat();
}
public boolean equals(Object obj) {
if (! (obj instanceof MismatchedReadExternal))
return false;
MismatchedReadExternal other = (MismatchedReadExternal) obj;
return (i == other.i && f == other.f);
}
public int hashCode() {
return i;
}
}
class InnocentBystander implements Serializable {
private static final long serialVersionUID = 1L;
String s;
InnocentBystander(String s) {
this.s = s;
}
public boolean equals(Object obj) {
if (! (obj instanceof InnocentBystander))
return false;
InnocentBystander other = (InnocentBystander) obj;
if (s != null)
return s.equals(other.s);
return (s == other.s);
}
public int hashCode() {
return s.hashCode();
}
}
public class SkipToEndOfBlockData {
public static void main(String[] args) throws Exception {
ObjectOutputStream oout;
ObjectInputStream oin;
ByteArrayOutputStream bout;
ByteArrayInputStream bin;
MismatchedRead mr, mrcopy;
MismatchedReadExternal mre, mrecopy;
InnocentBystander ib, ibcopy;
bout = new ByteArrayOutputStream();
oout = new ObjectOutputStream(bout);
mr = new MismatchedRead(1, (float) 2.34);
mre = new MismatchedReadExternal(5, (float) 6.78);
ib = new InnocentBystander("foo");
oout.writeObject(mr);
oout.writeObject(mre);
oout.writeObject(ib);
oout.flush();
bin = new ByteArrayInputStream(bout.toByteArray());
oin = new ObjectInputStream(bin);
mrcopy = (MismatchedRead) oin.readObject();
mrecopy = (MismatchedReadExternal) oin.readObject();
ibcopy = (InnocentBystander) oin.readObject();
if (! (mr.equals(mrcopy) && mre.equals(mrecopy) && ib.equals(ibcopy)))
throw new Error("copy not equal to original");
}
}
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