private void Ready(int StatusCode, string StatusLine)
{
SocketStatus = NNTPStatus.Singleline;
if (Connected != null)
{
Connected(StatusCode, StatusLine, this);
}
}
public bool Connect()
{
try
{
if (iConnection.Cancelled)
{
return(false);
}
if (SocketStatus == NNTPStatus.Multiline)
{
SocketStatus = NNTPStatus.Singleline;
}
if (SocketStatus == NNTPStatus.Singleline)
{
Ready(0, "");
return(true);
}
SocketStatus = NNTPStatus.Connecting;
if (iSocket == null)
{
if (!iServer.SSL)
{
iSocket = new Socket();
}
else
{
iSocket = new SSLSocket();
}
iSocket.Received += new EventHandler <WorkArgs>(iReceived);
iSocket.Connected += new EventHandler <WorkArgs>(iConnected);
iSocket.Disconnected += new EventHandler <WorkArgs>(iDisconnected);
}
return(iSocket.Connect(iServer));
}
catch (Exception ex)
{
Disconnect(996, ex.Message, false);
return(false);
}
}
private void iDisconnected(object sender, WorkArgs e)
{
iSocket = null;
SocketStatus = NNTPStatus.Closed;
//Debug.WriteLine("iDisconnected: " + e.Message);
try
{
if ((e != null) && (Failed != null))
{
Failed(e.Code, e.Message, iServer.Log, this);
}
}
catch { }
if (Closed != null)
{
Closed(this);
}
}
private void Process(int NNTPCode, Stream bData)
{
string sHeader = "Binary (" + bData.Length + " bytes)";
if (SocketStatus != NNTPStatus.Multiline)
{
sHeader = Common.GetReader(bData).ReadLine();
}
//iServer.WriteDebug(Module.VbLeft((Convert.ToString(NNTPCode) + "000"), 3), sHeader);
if ((NNTPCode == (int)NNTPCodes.GoodBye) || (iConnection.Cancelled) || (NNTPCode == 512))
{
if (NNTPCode <= 0)
{
NNTPCode = 991;
}
Disconnect(NNTPCode, sHeader, iConnection.Cancelled);
return;
}
switch (SocketStatus)
{
case NNTPStatus.Connecting:
switch (NNTPCode)
{
case (int)NNTPCodes.PostingAllowed:
case (int)NNTPCodes.PostingDisallowed:
StatusLine = sHeader;
SocketStatus = NNTPStatus.Authenticating;
SendLines("MODE READER");
return;
default:
if (NNTPCode <= 0)
{
NNTPCode = 991;
}
Disconnect(NNTPCode, sHeader, true);
break;
}
break;
case NNTPStatus.Authenticating:
switch (NNTPCode)
{
case (int)NNTPCodes.Authenticated1:
case (int)NNTPCodes.Authenticated2:
Ready(NNTPCode, StatusLine);
break;
case (int)NNTPCodes.MoreAuthentication:
SendLines("AUTHINFO PASS " + iServer.Password);
break;
case (int)NNTPCodes.PostingAllowed:
case (int)NNTPCodes.PostingDisallowed:
if (iServer.Username.Trim().Length == 0)
{
Ready(NNTPCode, StatusLine);
}
else
{
SendLines("AUTHINFO USER " + iServer.Username);
}
break;
case (int)NNTPCodes.AuthRequired:
case (int)NNTPCodes.TransferDenied:
SendLines("AUTHINFO USER " + iServer.Username);
break;
case (int)NNTPCodes.AuthRejected:
case (int)NNTPCodes.AuthFailed1:
case (int)NNTPCodes.AuthFailed2:
default:
if (NNTPCode <= 0)
{
NNTPCode = 991;
}
Disconnect(NNTPCode, sHeader, true);
break;
}
break;
case NNTPStatus.Singleline:
if (Response != null)
{
Response(NNTPCode, sHeader, this);
}
break;
case NNTPStatus.Multiline:
if (Received != null)
{
Received(bData, this);
}
break;
default:
Disconnect(993, "Status", true);
break;
}
}
private void iReceived(object sender, WorkArgs e)
{
string sBOF = "";
string sEOF = "";
byte lBOFLength = 3;
byte lEOFLength = 5;
bool bFinished = false;
try
{
if (SocketStatus != NNTPStatus.Multiline)
{
if (e.Data.Length >= lBOFLength)
{
sBOF = Common.GetBOF(e.Data, lBOFLength);
StatusCode = Common.GetCode(sBOF);
switch (StatusCode)
{
case (int)NNTPCodes.GroupsFollow:
case (int)NNTPCodes.XINDEXFollows:
case (int)NNTPCodes.ArticleFollows:
case (int)NNTPCodes.HeadFollows:
case (int)NNTPCodes.BodyFollows:
case (int)NNTPCodes.StatFollows:
case (int)NNTPCodes.XOVERFollows:
case (int)NNTPCodes.NewNewsFollows:
case (int)NNTPCodes.XGTITLEFollows:
case (int)NNTPCodes.XTHREADFollows:
SocketStatus = NNTPStatus.Multiline;
break;
}
}
}
int lPos = Convert.ToInt32(e.Data.Length - lEOFLength);
if (lPos >= 0)
{
sEOF = Common.GetEOF(e.Data, lEOFLength);
switch (SocketStatus)
{
case NNTPStatus.Multiline:
bFinished = (sEOF == (Environment.NewLine + "." + Environment.NewLine));
break;
default:
bFinished = (Common.VbRight(sEOF, 2) == Environment.NewLine);
break;
}
}
if (!bFinished)
{
Receive();
return;
}
e.Data.Seek(0, SeekOrigin.Begin);
Process(StatusCode, e.Data);
}
catch (Exception ex)
{
Disconnect(992, "Received: " + ex.Message, false);
}
}
