/**********************************************************************
 * Copyright (c) 2010, j. montgomery                                  *
 * All rights reserved.                                               *
 *                                                                    *
 * Redistribution and use in source and binary forms, with or without *
 * modification, are permitted provided that the following conditions *
 * are met:                                                           *
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 * + Redistributions of source code must retain the above copyright   *
 *   notice, this list of conditions and the following disclaimer.    *
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 * + Redistributions in binary form must reproduce the above copyright*
 *   notice, this list of conditions and the following disclaimer     *
 *   in the documentation and/or other materials provided with the    *
 *   distribution.                                                    *
 *                                                                    *
 * + Neither the name of j. montgomery's employer nor the names of    *
 *   its contributors may be used to endorse or promote products      *
 *   derived from this software without specific prior written        *
 *   permission.                                                      *
 *                                                                    *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS*
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT  *
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS  *
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 * OF THE POSSIBILITY OF SUCH DAMAGE.                                 *
 **********************************************************************/
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace DnDns.Records
{
    class UnknownRecord : DnsRecordBase
    {
        public UnknownRecord(RecordHeader dnsHeader) : base(dnsHeader) { }

        public override void ParseRecord(ref MemoryStream ms)
        {
            // Type not implemented so we read it into a buffer and print out the data.
            StringBuilder sb = new StringBuilder(this.DnsHeader.DataLength);
            byte[] b = new byte[1];
            // Loop over data, if char is easily converted to ASCII, convert it.
            // Otherwise print a '.'
            for (int i = 0; i < this.DnsHeader.DataLength; i++)
            {
                ms.Read(b, 0, 1);
                if ((b[0] > 0x20) && (b[0] < 0x7e))
                {
                    sb.Append(Encoding.ASCII.GetString(b));
                }
                else
                {
                    sb.Append('.');
                }
            }
            _answer = sb.ToString();
            _errorMsg = "Type " + this.DnsHeader.NsType + " not implemented.";
        }
    }
}