Java example source code file (S11N.java)
The S11N.java Java example source code
/*
* Copyright (c) 2013, 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 4811968 6908628 8006564
* @run main S11N check
* @summary Serialization compatibility with old versions (and fixes)
*/
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.Map;
import sun.misc.BASE64Encoder;
import sun.security.util.ObjectIdentifier;
public class S11N {
static String[] SMALL= {
"0.0",
"1.1",
"2.2",
"1.2.3456",
"1.2.2147483647.4",
"1.2.268435456.4",
};
static String[] HUGE = {
"2.16.764.1.3101555394.1.0.100.2.1",
"1.2.2147483648.4",
"2.3.4444444444444444444444",
"1.2.8888888888888888.33333333333333333.44444444444444",
};
// Do not use j.u.Base64, the test needs to run in jdk6
static BASE64Encoder encoder = new BASE64Encoder() {
@Override
protected int bytesPerLine() {
return 48;
}
};
public static void main(String[] args) throws Exception {
if (args[0].equals("check")) {
int version = Integer.valueOf(System.getProperty("java.version")
.split("\\.")[1]);
System.out.println("version is " + version);
if (version >= 7) {
for (String oid: SMALL) {
// 7 -> 7
check(out(oid), oid);
// 6 -> 7
check(out6(oid), oid);
}
for (String oid: HUGE) {
// 7 -> 7
check(out(oid), oid);
}
} else {
for (String oid: SMALL) {
// 6 -> 6
check(out(oid), oid);
// 7 -> 6
check(out7(oid), oid);
}
for (String oid: HUGE) {
// 7 -> 6 fails for HUGE oids
boolean ok = false;
try {
check(out7(oid), oid);
ok = true;
} catch (Exception e) {
System.out.println(e);
}
if (ok) {
throw new Exception();
}
}
}
} else {
// Generates the JDK6 serialized string inside this test, call
// $JDK7/bin/java S11N dump7
// $JDK6/bin/java S11N dump6
// and paste the output at the end of this test.
dump(args[0], SMALL);
// For jdk6, the following line will throw an exception, ignore it
dump(args[0], HUGE);
}
}
// Gets the serialized form for jdk6
private static byte[] out6(String oid) throws Exception {
return new sun.misc.BASE64Decoder().decodeBuffer(dump6.get(oid));
}
// Gets the serialized form for jdk7
private static byte[] out7(String oid) throws Exception {
return new sun.misc.BASE64Decoder().decodeBuffer(dump7.get(oid));
}
// Gets the serialized form for this java
private static byte[] out(String oid) throws Exception {
ByteArrayOutputStream bout = new ByteArrayOutputStream();
new ObjectOutputStream(bout).writeObject(new ObjectIdentifier(oid));
return bout.toByteArray();
}
// Makes sure serialized form can be deserialized
private static void check(byte[] in, String oid) throws Exception {
ObjectIdentifier o = (ObjectIdentifier) (
new ObjectInputStream(new ByteArrayInputStream(in)).readObject());
if (!o.toString().equals(oid)) {
throw new Exception("Read Fail " + o + ", not " + oid);
}
}
// dump serialized form to java code style text
private static void dump(String title, String[] oids) throws Exception {
for (String oid: oids) {
String[] base64 = encoder.encodeBuffer(out(oid)).split("\n");
System.out.println(" " + title + ".put(\"" + oid + "\",");
for (int i = 0; i<base64.length; i++) {
System.out.print(" \"" + base64[i] + "\"");
if (i == base64.length - 1) {
System.out.println(");");
} else {
System.out.println(" +");
}
}
}
}
// Do not use diamond operator, this test is also meant to run in jdk6
private static Map<String,String> dump7 = new HashMap
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