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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.java.sip.communicator.impl.dns;
import java.io.*;
import org.jitsi.dnssec.validator.*;
import org.xbill.DNS.*;
/**
* DNS Message that adds DNSSEC validation information.
*
* @author Ingo Bauersachs
*/
public class SecureMessage
extends Message
{
private boolean secure;
private boolean bogus;
private String bogusReason;
/**
* Creates a new instance of this class based on data received from a
* dnssecjava resolve.
*
* @param msg The answer of the dnssecjava resolver.
* @throws IOException
*/
public SecureMessage(Message msg) throws IOException
{
super(msg.toWire());
secure = msg.getHeader().getFlag(Flags.AD);
bogus = !secure && msg.getRcode() == Rcode.SERVFAIL;
for (RRset set : msg.getSectionRRsets(Section.ADDITIONAL)) {
if (set.getName().equals(Name.root) && set.getType() == Type.TXT
&& set.getDClass() == ValidatingResolver.VALIDATION_REASON_QCLASS)
{
bogusReason = ((TXTRecord)set.first()).getStrings().get(0).toString();
}
}
}
/**
* Indicates whether the answer is secure.
* @return True, if the result is validated securely.
*/
public boolean isSecure()
{
return secure;
}
/**
* Indicates if there was a validation failure.
*
* @return If the result was not secure (secure == false), and this result
* is due to a security failure, bogus is true.
*/
public boolean isBogus()
{
return bogus;
}
/**
* If the result is bogus this contains a string that describes the failure.
*
* @return string that describes the failure.
*/
public String getBogusReason()
{
return bogusReason;
}
/**
* Converts the Message to a String. The fields secure, bogus and whyBogus
* are append as a comment.
*/
@Override
public String toString()
{
StringBuilder s = new StringBuilder(super.toString());
s.append('\n');
s.append(";; Secure: ");
s.append(secure);
s.append('\n');
s.append(";; Bogus: ");
s.append(bogus);
s.append('\n');
if(bogus)
{
s.append(";; Reason: ");
s.append(bogusReason);
s.append('\n');
}
return s.toString();
}
}
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