Package org.xbill.DNS

Examples of org.xbill.DNS.Message

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      DataOutputStream dataOut;
      dataOut = new DataOutputStream(s.getOutputStream());
      int id = query.getHeader().getID();
      while (it.hasNext()) {
        RRset rrset = (RRset) it.next();
        Message response = new Message(id);
        Header header = response.getHeader();
        header.setFlag(Flags.QR);
        header.setFlag(Flags.AA);
        addRRset(rrset.getName(), response, rrset, Section.ANSWER, FLAG_DNSSECOK);
        if (tsig != null) {
          tsig.applyStream(response, qtsig, first);
          qtsig = response.getTSIG();
        }
        first = false;
        byte[] out = response.toWire();
        dataOut.writeShort(out.length);
        dataOut.write(out);
      }
    } catch (IOException ex) {
      log.warn("AXFR failed", ex);
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    if (queryOPT != null && (queryOPT.getFlags() & ExtendedFlags.DO) != 0) {
      flags = FLAG_DNSSECOK;
    }

    Message response = new Message(query.getHeader().getID());
    response.getHeader().setFlag(Flags.QR);
    if (query.getHeader().getFlag(Flags.RD)) {
      response.getHeader().setFlag(Flags.RD);
    }
    response.addRecord(queryRecord, Section.QUESTION);

    Name name = queryRecord.getName();
    int type = queryRecord.getType();
    int dclass = queryRecord.getDClass();
    if (type == Type.AXFR && socket != null) {
      return doAXFR(name, query, tsig, queryTSIG, socket);
    }
    if (!Type.isRR(type) && type != Type.ANY) {
      return errorMessage(query, Rcode.NOTIMP);
    }

    byte rcode = addAnswer(response, name, type, dclass, 0, flags);
    if (rcode != Rcode.NOERROR && rcode != Rcode.NXDOMAIN) {
      return errorMessage(query, rcode);
    }

    addAdditional(response, flags);

    if (queryOPT != null) {
      int optflags = (flags == FLAG_DNSSECOK) ? ExtendedFlags.DO : 0;
      OPTRecord opt = new OPTRecord((short) 4096, rcode, (byte) 0, optflags);
      response.addRecord(opt, Section.ADDITIONAL);
    }

    response.setTSIG(tsig, Rcode.NOERROR, queryTSIG);
    return response.toWire(maxLength);
  }
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    response.setTSIG(tsig, Rcode.NOERROR, queryTSIG);
    return response.toWire(maxLength);
  }

  private byte[] buildErrorMessage(Header header, int rcode, Record question) {
    Message response = new Message();
    response.setHeader(header);
    for (int i = 0; i < 4; i++) {
      response.removeAllRecords(i);
    }
    if (rcode == Rcode.SERVFAIL) {
      response.addRecord(question, Section.QUESTION);
    }
    header.setRcode(rcode);
    return response.toWire();
  }
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    try{

      byte[] response = null;

      try {
        Message query = new Message(inDataPacket.getData());

        log.debug("UDP query " + EagleDNS.toString(query.getQuestion()) + " from " + inDataPacket.getSocketAddress());

        response = this.eagleDNS.generateReply(query, inDataPacket.getData(), inDataPacket.getLength(), null);

        if (response == null) {
          return;
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        dataIn = new DataInputStream(is);
        inLength = dataIn.readUnsignedShort();
        in = new byte[inLength];
        dataIn.readFully(in);

        Message query;
        byte[] response = null;
        try {
          query = new Message(in);

          log.debug("TCP query " + EagleDNS.toString(query.getQuestion()) + " from " + socket.getRemoteSocketAddress());

          response = this.eagleDNS.generateReply(query, in, in.length, socket);

          if (response == null) {
            return;
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            maxLength = 512;

        if (queryOPT != null && (queryOPT.getFlags() & ExtendedFlags.DO) != 0)
            flags = FLAG_DNSSECOK;

        Message response = new Message(query.getHeader().getID());
        response.getHeader().setFlag(Flags.QR);
        if (query.getHeader().getFlag(Flags.RD))
            response.getHeader().setFlag(Flags.RD);
        response.addRecord(queryRecord, Section.QUESTION);

        Name name = queryRecord.getName();
        int type = queryRecord.getType();
        int dclass = queryRecord.getDClass();
        if (!Type.isRR(type) && type != Type.ANY)
            return errorMessage(query, Rcode.NOTIMP);

        byte rcode = addAnswer(response, name, type, dclass, 0, flags);
       
        // TIMEOUT
        if (rcode == -1) {
            return null;
        }
       
        if (rcode != Rcode.NOERROR && rcode != Rcode.NXDOMAIN)
            return errorMessage(query, rcode);

        addAdditional(response, flags);

        if (queryOPT != null) {
            int optflags = (flags == FLAG_DNSSECOK) ? ExtendedFlags.DO : 0;
            OPTRecord opt = new OPTRecord((short) 4096, rcode, (byte) 0,
                    optflags);
            response.addRecord(opt, Section.ADDITIONAL);
        }

        return response.toWire(maxLength);
    }
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        return response.toWire(maxLength);
    }

    byte[] buildErrorMessage(Header header, int rcode, Record question) {
        Message response = new Message();
        response.setHeader(header);
        for (int i = 0; i < 4; i++)
            response.removeAllRecords(i);
        if (rcode == Rcode.SERVFAIL)
            response.addRecord(question, Section.QUESTION);
        header.setRcode(rcode);
        return response.toWire();
    }
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    public byte[] errorMessage(Message query, int rcode) {
        return buildErrorMessage(query.getHeader(), rcode, query.getQuestion());
    }

    public byte[] generateReply(byte[] in, int length) {
        Message query;
        byte[] response = null;
        try {
            query = new Message(in);
            response = generateReply(query, length, null);
        } catch (IOException e) {
            response = formerrMessage(in);
        }
        return response;
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      resolver.setTimeout(timeoutInSeconds);
      resolver.setTCP(true);

      Name name = ReverseMap.fromAddress(hostIp);
      Record record = Record.newRecord(name, Type.PTR, DClass.IN);
      Message response = resolver.send(newQuery(record));

      Record[] answers = response.getSectionArray(Section.ANSWER);
      if (answers.length == 0) {
        LOG.warn("no answer to DNS resolution attempt for "+hostIp+"; using fallback");
        return fallback(hostIp);
      } else {
        String reverseAddress = answers[0].rdataToString();
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    Name name = ReverseMap.fromAddress(hostIp);
    int type = Type.PTR;
    int dclass = DClass.IN;
    Record rec = Record.newRecord(name, type, dclass);
    Message query = Message.newQuery(rec);
    Message response = res.send(query);

    Record[] answers = response.getSectionArray(Section.ANSWER);
    if (answers.length == 0)
      return hostIp;
    else {
      String revaddr = answers[0].rdataToString();
      return revaddr.endsWith(".") ? revaddr.substring(0, revaddr.length() - 1) : revaddr;
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Related Classes of org.xbill.DNS.Message

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  • io.covert.dns.parse.ParseMapper
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  • io.fabric8.dns.FabricZoneManager
  • kg.apc.jmeter.samplers.DNSJavaDecoderToRawData
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  • net.windwards.dnsfrontend.frontend.ResolveTask
  • net.windwards.dnsfrontend.frontend.TestComplexSetup
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