private static IRecord ReadRecord(ByteReader byteReader)
{
var name = DnsUtils.ReadName(byteReader);
var rtype = byteReader.GetUshort();
var rclass = byteReader.GetUshort();
var ttl = byteReader.GetUint();
if ((RecordType)rtype == RecordType.NS)
{
var record = new NSRecord()
{
Name = name,
RClass = rclass,
Ttl = ttl,
};
var rdlength = byteReader.GetUshort();
record.Host = ReadName(byteReader);
return(record);
}
else if ((RecordType)rtype == RecordType.A)
{
var rdlength = byteReader.GetUshort();
var ipv4 = ReadIpv4(byteReader);
var record = new ARecord(name, ipv4)
{
RClass = rclass,
Ttl = ttl,
};
return(record);
}
else if ((RecordType)rtype == RecordType.AAAA)
{
var rdlength = byteReader.GetUshort();
var ipv6 = ReadIpv6(byteReader);
var record = new AaaaRecord(name, ipv6)
{
RClass = rclass,
Ttl = ttl,
};
return(record);
}
else
{
var record = new Record()
{
Name = name,
RType = rtype,
RClass = (ushort)rclass,
Ttl = ttl,
};
var rdlength = byteReader.GetUshort();
record.RData = byteReader.GetBytes(rdlength);
return(record);
}
}
/// <summary>
/// Arguments:
/// 0: domainName
/// 1: nameServer
/// 2: ttl (optional)
/// 3: notes (optional)
/// </summary>
/// <param name="args"></param>
/// <returns></returns>
public DnsRecord ParseNS(string[] args)
{
string domainName = args.GetRequiredValue(0);
string nameServer = args.GetRequiredValue(1);
int ttl = this.ValidateTTL(args.GetOptionalValue <int>(2, 0));
string notes = args.GetOptionalValue(3, string.Empty);
NSRecord nsRecord = new NSRecord(domainName, nameServer)
{
TTL = ttl
};
DnsRecord dnsRecord = new DnsRecord(domainName, DnsStandard.RecordType.NS, nsRecord.Serialize(), notes);
return(dnsRecord);
}
/// <summary>
/// Tests equality between this NS record and the other <paramref name="record"/>.
/// </summary>
/// <param name="record">The other record.</param>
/// <returns><c>true</c> if the RRs are equal, <c>false</c> otherwise.</returns>
public override bool Equals(DnsResourceRecord record)
{
if (!base.Equals(record))
{
return(false);
}
NSRecord nsRecord = record as NSRecord;
if (nsRecord == null)
{
return(false);
}
return(DnsStandard.Equals(m_nameserver, nsRecord.NameServer));
}
public void SerializeNSRecord()
{
var serializer = GetRrSerializer();
var ns = new NSRecord()
{
Name = "www.",
TimeToLive = 343,
DName = "aaa."
};
byte[] expected = { 0x03, 0x77, 0x77, 0x77, 0x00,
0x00, 0x02,
0x00, 0x01,
0x00, 0x00, 0x01, 0x57,
0x00, 0x05,
0x03, 0x61, 0x61, 0x61, 0x00 };
var serialized = ns.ToByteArray();
Assert.AreEqual(expected, serialized);
}
