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/*
* Copyright (c) 2014, Red Hat, Inc.
* 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 8035105
* @summary DNS resource record parsing
* @modules jdk.naming.dns/com.sun.jndi.dns:+open
*/
import com.sun.jndi.dns.ResourceRecord;
import javax.naming.CommunicationException;
import javax.naming.InvalidNameException;;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.io.IOException;
import static java.nio.charset.StandardCharsets.ISO_8859_1;
public class Parser {
static Constructor<ResourceRecord> rrConstructor;
static {
try {
rrConstructor = ResourceRecord.class.getDeclaredConstructor(
byte[].class, int.class, int.class, boolean.class,
boolean.class);
rrConstructor.setAccessible(true);
} catch (Exception e) {
throw new AssertionError(e);
}
}
static ResourceRecord parse(String data, int offset, boolean qSection)
throws Throwable {
byte[] bytes = data.getBytes(ISO_8859_1);
try {
return rrConstructor.newInstance(
bytes, bytes.length, offset, qSection, !qSection);
} catch (InvocationTargetException e) {
throw e.getCause();
}
}
public static void main(String[] args) throws Throwable {
ResourceRecord rr;
rr = parse("\003www\007example\003com\000\000\002\000\001",
0, true);
if (!rr.getName().toString().equals("www.example.com."))
throw new AssertionError(rr.getName().toString());
if (rr.getRrclass() != 1)
throw new AssertionError("RCLASS: " + rr.getRrclass());
if (rr.getType() != 2)
throw new AssertionError("RTYPE: " + rr.getType());
String longLabel = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" +
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
rr = parse("\077" + longLabel + "\077" + longLabel +
"\077" + longLabel + "\061" + longLabel.substring(0, 49) +
"\007example\003com\000\000\002\000\001",
0, true);
if (!rr.getName().toString().equals(longLabel +
'.' + longLabel + '.' + longLabel +
'.' + longLabel.substring(0, 49) + ".example.com."))
throw new AssertionError(rr.getName().toString());
if (rr.getRrclass() != 1)
throw new AssertionError("RCLASS: " + rr.getRrclass());
if (rr.getType() != 2)
throw new AssertionError("RTYPE: " + rr.getType());
rr = parse("1-2-3-4-5-6-" +
"\003www\007example\003com\000\000\002\000\001" +
"\300\014\000\002\000\001\000\001\121\200" +
"\000\005\002ns\300\020",
33, false);
if (!rr.getName().toString().equals("www.example.com."))
throw new AssertionError(rr.getName().toString());
if (rr.getRrclass() != 1)
throw new AssertionError("RCLASS: " + rr.getRrclass());
if (rr.getType() != 2)
throw new AssertionError("RTYPE: " + rr.getType());
if (!rr.getRdata().toString().equals("ns.example.com."))
throw new AssertionError("RDATA: " + rr.getRdata());
try {
parse("1-2-3-4-5-6-" +
"\003www\007example\003com\000\000\002\000\001" +
"\300\014\000\002\000\001\300\051\300\047" +
"\000\005\002ns\300\051",
33, false);
throw new AssertionError();
} catch (CommunicationException e) {
if (!e.getMessage().equals("DNS error: malformed packet")
|| e.getCause().getClass() != IOException.class
|| !e.getCause().getMessage().equals(
"Too many compression references"))
throw e;
}
try {
String longLabel62 = "\076" + longLabel.substring(1);
parse(longLabel62 + longLabel62 + longLabel62 + longLabel62 +
"\002XX\000\000\002\000\001", 0, true);
throw new AssertionError();
} catch (CommunicationException e) {
if (!e.getMessage().equals("DNS error: malformed packet")
|| e.getCause().getClass() != InvalidNameException.class
|| !e.getCause().getMessage().equals("Name too long"))
throw e;
}
try {
parse("\100Y" + longLabel + "\000\000\002\000\001", 0, true);
throw new AssertionError();
} catch (CommunicationException e) {
if (!e.getMessage().equals("DNS error: malformed packet")
|| e.getCause().getClass() != IOException.class
|| !e.getCause().getMessage().equals("Invalid label type: 64"))
throw e;
}
}
}
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