public void MergeCopyFrom(DNSPacket aSource)
{
this.Questions.AddRange(aSource.Questions);
this.Answers.AddRange(aSource.Answers);
this.AuthorityRecords.AddRange(aSource.AuthorityRecords);
this.AdditionalRecords.AddRange(aSource.AdditionalRecords);
}
private void GotData(IAsyncResult ar)
{
lock (this)
{
if (timer == null)
{
return;
}
try
{
DNSPacket pack = new DNSPacket();
IPEndPoint ipd = null;
pack.ReadFrom(cl.EndReceive(ar, ref ipd));
if (pack.SequenceID != this.Input.SequenceID)
{
return; // bad wolf
}
var tm = timer;
timer = null;
tm.Dispose();
cl.Close();
Callback(pack);
}
catch
{
}
}
}
public override void BodyReadFrom(byte[] aData, Stream aMainStream)
{
BinaryReader aSrc = new BinaryReader(new MemoryStream(aData));
this.fTargetName = DNSPacket.ParseName(aSrc, aMainStream);
aSrc.Close();
}
public static DNSResource ReadFrom(BinaryReader aSrc)
{
DNSResource resource;
string str = DNSPacket.ParseName(aSrc, aSrc.BaseStream);
DNSType aType = (DNSType)DNSPacket.N2H(aSrc.ReadUInt16());
DNSClass class2 = (DNSClass)DNSPacket.N2H(aSrc.ReadUInt16());
bool flag = false;
if (0 != (((ushort)class2) & 0x8000))
{
flag = true;
}
class2 &= (DNSClass)(-32769);
uint num = DNSPacket.N2H(aSrc.ReadUInt32());
ushort num2 = DNSPacket.N2H(aSrc.ReadUInt16());
byte[] aData = aSrc.ReadBytes((int)num2);
DNSType type2 = aType;
if (type2 == DNSType.A)
{
resource = new DNSARecord();
}
else if (type2 == DNSType.AAAA)
{
resource = new DNSAAAARecord();
}
else if (type2 == DNSType.PTR)
{
resource = new DNSPTRRecord();
}
else if (type2 == DNSType.NS)
{
resource = new DNSNSRecord();
}
else if (type2 == DNSType.TXT)
{
resource = new DNSTXTRecord();
}
else if (type2 == DNSType.CNAME)
{
resource = new DNSCNameRecord();
}
else if (type2 == DNSType.SRV)
{
resource = new DNSSRVRecord();
}
else
{
resource = new DNSUnknownRecord(aType);
}
resource.fName = str;
resource.fParseTime = DateTime.UtcNow;
resource.fClass = class2;
resource.fClearCache = flag;
resource.fTTL = (ushort)num;
resource.BodyReadFrom(aData, aSrc.BaseStream);
return(resource);
}
public override void BodyReadFrom(byte[] aData, Stream aMainStream)
{
BinaryReader aSrc = new BinaryReader(new MemoryStream(aData));
this.fPriority = DNSPacket.N2H(aSrc.ReadUInt16());
this.fWeight = DNSPacket.N2H(aSrc.ReadUInt16());
this.fPort = DNSPacket.N2H(aSrc.ReadUInt16());
this.fTargetName = DNSPacket.ParseName(aSrc, aMainStream);
aSrc.Close();
}
public override byte[] BodyWriteTo()
{
BinaryWriter aDest = new BinaryWriter(new MemoryStream());
DNSPacket.GenerateName(aDest, this.fTargetName);
aDest.Flush();
byte[] buffer = (aDest.BaseStream as MemoryStream).ToArray();
aDest.Close();
return(buffer);
}
public void ReadFrom(BinaryReader aSrc)
{
this.fName = DNSPacket.ParseName(aSrc, aSrc.BaseStream);
this.fType = (DNSType)DNSPacket.N2H(aSrc.ReadUInt16());
ushort num = DNSPacket.N2H(aSrc.ReadUInt16());
if (0 != (num & 0x8000))
{
this.fClearCache = true;
}
this.fClass = ((DNSClass)num) & ((DNSClass)(-32769));
}
public void WriteTo(BinaryWriter aDest)
{
DNSPacket.GenerateName(aDest, this.fName);
aDest.Write(DNSPacket.H2N((ushort)this.fType));
if (this.fClearCache)
{
aDest.Write(DNSPacket.H2N((ushort)(this.fClass | ((DNSClass)0x8000))));
}
else
{
aDest.Write(DNSPacket.H2N((ushort)this.fClass));
}
}
public void BeginRequest(DNSQuestion question, Action<DNSResource> action)
{
DNSPacket req = new DNSPacket();
req.QueryType = DNSQueryType.Standard;
req.RecursionDesired = true;
req.Questions.Add(question);
BeginRequest(req, a =>
{
if (a == null || a.Answers.Count != 1)
action(null);
else
action(a.Answers[0]);
});
}
public void BeginRequest(DNSPacket input, Action<DNSPacket> action)
{
if (fAddresses.Count == 0)
{
LoadSystemAddresses();
if (fAddresses == null) throw new DNSException("No addresses available");
}
RequestInfo info = new RequestInfo();
info.Input = input;
info.Index = 0;
info.Owner = this;
info.Callback = action;
input.SequenceID = (ushort)rnd.Next(ushort.MaxValue);
info.Start();
}
public void WriteTo(BinaryWriter aDest)
{
DNSPacket.GenerateName(aDest, this.fName);
aDest.Write(DNSPacket.H2N((ushort)this.Type));
if (this.fClearCache)
{
aDest.Write(DNSPacket.H2N((ushort)(this.fClass | ((DNSClass)0x8000))));
}
else
{
aDest.Write(DNSPacket.H2N((ushort)this.fClass));
}
byte[] buffer = this.BodyWriteTo();
aDest.Write(DNSPacket.H2N((uint)this.fTTL));
aDest.Write(DNSPacket.H2N((ushort)buffer.Length));
aDest.Write(buffer, 0, buffer.Length);
}
public void BeginRequest(DNSQuestion question, Action <DNSResource> action)
{
DNSPacket req = new DNSPacket();
req.QueryType = DNSQueryType.Standard;
req.RecursionDesired = true;
req.Questions.Add(question);
BeginRequest(req, a =>
{
if (a == null || a.Answers.Count != 1)
{
action(null);
}
else
{
action(a.Answers[0]);
}
});
}
public void BeginRequest(DNSPacket input, Action <DNSPacket> action)
{
if (fAddresses.Count == 0)
{
LoadSystemAddresses();
if (fAddresses == null)
{
throw new DNSException("No addresses available");
}
}
RequestInfo info = new RequestInfo();
info.Input = input;
info.Index = 0;
info.Owner = this;
info.Callback = action;
input.SequenceID = (ushort)rnd.Next(ushort.MaxValue);
info.Start();
}
private void GotData(IAsyncResult ar)
{
lock (this)
{
if (timer == null)
{
return;
}
try
{
DNSPacket pack = new DNSPacket();
IPEndPoint ipd = null;
pack.ReadFrom(cl.EndReceive(ar, ref ipd));
if (pack.SequenceID != this.Input.SequenceID) return; // bad wolf
var tm = timer;
timer = null;
tm.Dispose();
cl.Close();
Callback(pack);
}
catch
{
}
}
}
public void MergeCopyFrom(DNSPacket aSource)
{
this.Questions.AddRange(aSource.Questions);
this.Answers.AddRange(aSource.Answers);
this.AuthorityRecords.AddRange(aSource.AuthorityRecords);
this.AdditionalRecords.AddRange(aSource.AdditionalRecords);
}
