internal FtpResponse Connect(int timeout,
string server,
int port)
{
CheckDisposed();
NSTrace.WriteLineVerbose("CC: -> Connect");
if (null == server)
{
throw new ArgumentNullException("server");
}
if (port < IPEndPoint.MinPort || port > IPEndPoint.MaxPort)
{
throw new ArgumentOutOfRangeException("port", "Value, specified for the port, is out of valid range.");
}
SetProgress(true);
try
{
_socket.ConnectTimeout = timeout;
string msg = string.Format("CC: Connecting (timeout: {0}, srv: {1}:{2})...", timeout, server, port);
NSTrace.WriteLineInfo(msg);
_socket.Connect(server, port);
msg = string.Format("CC: Reading response...");
NSTrace.WriteLineInfo(msg);
_response = _reader.ReadResponse(timeout);
NSTrace.WriteLineVerbose("CC: <- Connect");
}
catch (SocketException e)
{
CheckDisposed();
CheckTimeoutException(e);
throw;
}
catch (Exception)
{
CheckDisposed();
throw;
}
catch
{
CheckDisposed();
throw;
}
finally
{
SetProgress(false);
}
OnResponseReceived();
return(_response);
}
private void btnRequest_Click(object sender, System.EventArgs e)
{
SocketEx sock = null;
try
{
Uri reqUri = new Uri(txtURL.Text);
string host = reqUri.Host;
int port = reqUri.Port;
string path = reqUri.PathAndQuery;
sock = new SocketEx(_proxyType, _proxyServer, _proxyPort,
_proxyUser, _proxyPwd);
//configure preauthenticate
sock.PreAuthenticate = _preAuthenticate;
sock.Connect(host, port);
string cmd = "GET " + path + " HTTP/1.0\r\n" +
"Host: " + host + "\r\n\r\n";
sock.Send(_usedEnc.GetBytes(cmd));
//simple reading loop
//read while have the data
try
{
byte[] data = new byte[32 * 1024];
while (true)
{
int dataLen = sock.Receive(data);
if (0 == dataLen)
{
break;
}
txtRes.Text += _usedEnc.GetString(data, 0, dataLen);
}
}
catch (Exception ex)
{
txtRes.Text += Environment.NewLine + ex.ToString();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Exception caught!");
}
if (null != sock)
{
sock.Close();
}
}
internal override void Establish(int timeout)
{
CheckDisposed();
try
{
_socket.ConnectTimeout = timeout;
_socket.Connect(_remoteEP);
_stream = new NetworkStreamEx(_socket);
}
catch (SocketException e)
{
CheckDisposed();
CheckTimeoutException(e);
throw;
}
catch
{
CheckDisposed();
throw;
}
}
/// <summary>
/// Connects to specified NNTP server.
/// </summary>
/// <param name="server">NNTP server.</param>
/// <param name="port">NNTP server port. Defualt NNTP port is 119.</param>
public void Connect(string server,int port)
{
if(m_Connected){
throw new Exception("NNTP client is already connected, Disconnect first before calling Connect !");
}
m_pSocket = new SocketEx();
m_pSocket.Connect(server,port);
/*
if(m_LogCmds && SessionLog != null){
m_pLogger = new SocketLogger(s,SessionLog);
m_pLogger.SessionID = Guid.NewGuid().ToString();
m_pSocket.Logger = m_pLogger;
}*/
// Set connected flag
m_Connected = true;
// Read server response
string responseLine = m_pSocket.ReadLine(1000);
if(!responseLine.StartsWith("200")){
throw new Exception(responseLine);
}
}
/// <exception cref="System.IO.IOException"></exception>
private void Negotiate(int port, ServerMessageBlock resp)
{
lock (Sbuf)
{
if (port == 139)
{
Ssn139();
}
else
{
if (port == -1)
{
port = SmbConstants.DefaultPort;
}
// 445
Socket = new SocketEx(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp);
//TCPローカルポートは、毎回空いているものを使う。
//https://blogs.msdn.microsoft.com/dgorti/2005/09/18/only-one-usage-of-each-socket-address-protocolnetwork-addressport-is-normally-permitted/
Socket.Bind(new IPEndPoint(LocalAddr, 0));
Socket.Connect(new IPEndPoint(IPAddress.Parse(Address.GetHostAddress()),
port), // <- 445
SmbConstants.ConnTimeout);
Socket.SoTimeOut = SmbConstants.SoTimeout;
Out = Socket.GetOutputStream();
In = Socket.GetInputStream();
}
if (++Mid == 32000)
{
Mid = 1;
}
NegotiateRequest.Mid = Mid;
int n = NegotiateRequest.Encode(Sbuf, 4);
Encdec.Enc_uint32be(n & 0xFFFF, Sbuf, 0);
if (Log.Level >= 4)
{
Log.WriteLine(NegotiateRequest);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Sbuf, 4, n);
}
}
Out.Write(Sbuf, 0, 4 + n);
Out.Flush();
if (PeekKey() == null)
{
throw new IOException("transport closed in negotiate");
}
int size = Encdec.Dec_uint16be(Sbuf, 2) & 0xFFFF;
if (size < 33 || (4 + size) > Sbuf.Length)
{
throw new IOException("Invalid payload size: " + size);
}
Readn(In, Sbuf, 4 + 32, size - 32);
resp.Decode(Sbuf, 4);
if (Log.Level >= 4)
{
Log.WriteLine(resp);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Sbuf, 4, n);
}
}
}
}
/// <exception cref="System.IO.IOException"></exception>
internal virtual void Ssn139()
{
Name calledName = new Name(Address.FirstCalledName(), 0x20, null);
do
{
Socket = new SocketEx(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp);
//TCPローカルポートは、毎回空いているものを使う。
//https://blogs.msdn.microsoft.com/dgorti/2005/09/18/only-one-usage-of-each-socket-address-protocolnetwork-addressport-is-normally-permitted/
Socket.Bind(new IPEndPoint(LocalAddr, 0));
Socket.Connect(new IPEndPoint(IPAddress.Parse(Address.GetHostAddress()),
139),
SmbConstants.ConnTimeout);
Socket.SoTimeOut = SmbConstants.SoTimeout;
Out = Socket.GetOutputStream();
In = Socket.GetInputStream();
SessionServicePacket ssp = new SessionRequestPacket(calledName,
NbtAddress.GetLocalName());
Out.Write(Sbuf, 0, ssp.WriteWireFormat(Sbuf, 0));
if (Readn(In, Sbuf, 0, 4) < 4)
{
try
{
//Socket.`Close` method deleted
//Socket.Close();
Socket.Dispose();
}
catch (IOException)
{
}
throw new SmbException("EOF during NetBIOS session request");
}
switch (Sbuf[0] & 0xFF)
{
case SessionServicePacket.PositiveSessionResponse:
{
if (Log.Level >= 4)
{
Log.WriteLine("session established ok with " + Address);
}
return;
}
case SessionServicePacket.NegativeSessionResponse:
{
int errorCode = In.Read() & 0xFF;
switch (errorCode)
{
case NbtException.CalledNotPresent:
case NbtException.NotListeningCalled:
{
//Socket.`Close` method deleted
//Socket.Close();
Socket.Dispose();
break;
}
default:
{
Disconnect(true);
throw new NbtException(NbtException.ErrSsnSrvc,
errorCode);
}
}
break;
}
case -1:
{
Disconnect(true);
throw new NbtException(NbtException.ErrSsnSrvc,
NbtException.ConnectionRefused);
}
default:
{
Disconnect(true);
throw new NbtException(NbtException.ErrSsnSrvc, 0);
}
}
}while ((calledName.name = Address.NextCalledName()) != null);
throw new IOException("Failed to establish session with " + Address);
}
/// <summary>
/// Connects to sepcified host.
/// </summary>
/// <param name="localEndpoint">Sets local endpoint. Pass null, to use default.</param>
/// <param name="host">Host name or IP address.</param>
/// <param name="port">Port where to connect.</param>
/// <param name="ssl">Specifies if to connected via SSL. Default SMTP port is 25 and SSL port is 465.</param>
public void Connect(IPEndPoint localEndpoint, string host, int port, bool ssl)
{
m_pSocket = new SocketEx();
if (localEndpoint != null)
{
m_pSocket.Bind(localEndpoint);
}
// Create logger
if (SessionLog != null)
{
m_pLogger = new SocketLogger(m_pSocket.RawSocket, SessionLog);
m_pLogger.SessionID = Guid.NewGuid().ToString();
m_pSocket.Logger = m_pLogger;
}
if (host.IndexOf("@") == -1)
{
m_pSocket.Connect(host, port, ssl);
}
else
{
//---- Parse e-domain -------------------------------//
string domain = host;
// eg. Ivx <*****@*****.**>
if (domain.IndexOf("<") > -1 && domain.IndexOf(">") > -1)
{
domain = domain.Substring(domain.IndexOf("<") + 1,
domain.IndexOf(">") - domain.IndexOf("<") - 1);
}
if (domain.IndexOf("@") > -1)
{
domain = domain.Substring(domain.LastIndexOf("@") + 1);
}
if (domain.Trim().Length == 0)
{
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("Destination address '" + host + "' is invalid, aborting !");
}
throw new Exception("Destination address '" + host + "' is invalid, aborting !");
}
//--- Get MX record -------------------------------------------//
Dns_Client dns = new Dns_Client();
Dns_Client.DnsServers = m_pDnsServers;
DnsServerResponse dnsResponse = dns.Query(domain, QTYPE.MX);
bool connected = false;
switch (dnsResponse.ResponseCode)
{
case RCODE.NO_ERROR:
DNS_rr_MX[] mxRecords = dnsResponse.GetMXRecords();
// Try all available hosts by MX preference order, if can't connect specified host.
foreach (DNS_rr_MX mx in mxRecords)
{
try
{
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("Connecting with mx record to: " + mx.Host);
}
m_pSocket.Connect(mx.Host, port, ssl);
connected = true;
break;
}
catch (Exception x)
{
// Just skip and let for to try next host.
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("Failed connect to: " + mx.Host + " error:" +
x.Message);
}
}
}
// None of MX didn't connect
if (mxRecords.Length > 0 && !connected)
{
throw new Exception("Destination email server is down");
}
/* Rfc 2821 5
If no MX records are found, but an A RR is found, the A RR is treated as
if it was associated with an implicit MX RR, with a preference of 0,
pointing to that host.
*/
if (!connected)
{
// Try to connect with A record
IPAddress[] ipEntry = null;
try
{
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("No mx record, trying to get A record for: " +
domain);
}
ipEntry = Dns_Client.Resolve(domain);
}
catch
{
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("Invalid domain,no MX or A record: " + domain);
}
throw new Exception("Invalid domain,no MX or A record: " + domain);
}
try
{
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("Connecting with A record to:" + domain);
}
m_pSocket.Connect(domain, port, ssl);
}
catch
{
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("Failed connect to:" + domain);
}
throw new Exception("Destination email server is down");
}
}
break;
case RCODE.NAME_ERROR:
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("Invalid domain,no MX or A record: " + domain);
}
throw new Exception("Invalid domain,no MX or A record: " + domain);
case RCODE.SERVER_FAILURE:
if (m_pLogger != null)
{
m_pLogger.AddTextEntry("Dns server unvailable.");
}
throw new Exception("Dns server unvailable.");
}
}
/*
* Notes: Greeting may be single or multiline response.
*
* Examples:
* 220<SP>SMTP server ready<CRLF>
*
* 220-SMTP server ready<CRLF>
* 220-Addtitional text<CRLF>
* 220<SP>final row<CRLF>
*
*/
// Read server response
string responseLine = m_pSocket.ReadLine(1000);
while (!responseLine.StartsWith("220 "))
{
// If lisne won't start with 220, then its error response
if (!responseLine.StartsWith("220"))
{
throw new Exception(responseLine);
}
responseLine = m_pSocket.ReadLine(1000);
}
m_Connected = true;
}
/// <exception cref="System.IO.IOException"></exception>
private void Negotiate(int port, ServerMessageBlock resp)
{
lock (Sbuf)
{
if (port == 139)
{
Ssn139();
}
else
{
if (port == -1)
{
port = SmbConstants.DefaultPort;
}
// 445
Socket = new SocketEx(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
if (LocalAddr != null)
{
Socket.Bind2(new IPEndPoint(LocalAddr, LocalPort));
}
Socket.Connect(Address.GetHostAddress(), port);
//Socket.Connect(new IPEndPoint(IPAddress.Parse(Address.GetHostAddress()), port), SmbConstants.ConnTimeout);
Socket.SoTimeOut = SmbConstants.SoTimeout;
Out = Socket.GetOutputStream();
In = Socket.GetInputStream();
}
if (++Mid == 32000)
{
Mid = 1;
}
NegotiateRequest.Mid = Mid;
int n = NegotiateRequest.Encode(Sbuf, 4);
Encdec.Enc_uint32be(n & 0xFFFF, Sbuf, 0);
if (Log.Level >= 4)
{
Log.WriteLine(NegotiateRequest);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Sbuf, 4, n);
}
}
Out.Write(Sbuf, 0, 4 + n);
Out.Flush();
if (PeekKey() == null)
{
throw new IOException("transport closed in negotiate");
}
int size = Encdec.Dec_uint16be(Sbuf, 2) & 0xFFFF;
if (size < 33 || (4 + size) > Sbuf.Length)
{
throw new IOException("Invalid payload size: " + size);
}
Readn(In, Sbuf, 4 + 32, size - 32);
resp.Decode(Sbuf, 4);
if (Log.Level >= 4)
{
Log.WriteLine(resp);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Sbuf, 4, n);
}
}
}
}
/// <exception cref="System.IO.IOException"></exception>
internal virtual void Ssn139()
{
Name calledName = new Name(Address.FirstCalledName(), 0x20, null
);
do
{
Socket = new SocketEx(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
if (LocalAddr != null)
{
Socket.Bind2(new IPEndPoint(LocalAddr, LocalPort));
}
Socket.Connect(Address.GetHostAddress(), 139);
//Socket.Connect(new IPEndPoint(IPAddress.Parse(Address.GetHostAddress()), 139), SmbConstants.ConnTimeout);
Socket.SoTimeOut = SmbConstants.SoTimeout;
Out = Socket.GetOutputStream();
In = Socket.GetInputStream();
SessionServicePacket ssp = new SessionRequestPacket(calledName, NbtAddress.GetLocalName
());
Out.Write(Sbuf, 0, ssp.WriteWireFormat(Sbuf, 0));
if (Readn(In, Sbuf, 0, 4) < 4)
{
try
{
Socket.Dispose();
}
catch (IOException)
{
}
throw new SmbException("EOF during NetBIOS session request");
}
switch (Sbuf[0] & 0xFF)
{
case SessionServicePacket.PositiveSessionResponse:
{
if (Log.Level >= 4)
{
Log.WriteLine("session established ok with " + Address);
}
return;
}
case SessionServicePacket.NegativeSessionResponse:
{
int errorCode = In.Read() & 0xFF;
switch (errorCode)
{
case NbtException.CalledNotPresent:
case NbtException.NotListeningCalled:
{
Socket.Dispose();
break;
}
default:
{
Disconnect(true);
throw new NbtException(NbtException.ErrSsnSrvc, errorCode);
}
}
break;
}
case -1:
{
Disconnect(true);
throw new NbtException(NbtException.ErrSsnSrvc, NbtException.ConnectionRefused
);
}
default:
{
Disconnect(true);
throw new NbtException(NbtException.ErrSsnSrvc, 0);
}
}
}while ((calledName.name = Address.NextCalledName()) != null);
throw new IOException("Failed to establish session with " + Address);
}
public TrackerResponse MakeWebRequest(Uri uriQuest, string httpProtocol, string headers)
{
Encoding encoder = Encoding.GetEncoding(0x4e4);
Socket = new SocketEx(Proxy, ProxyServer, ProxyPort, ProxyUser, ProxyPassword);
Socket.SetTimeout(0x30d40);
Socket.PreAuthenticate = false;
log.Info($"Connecting to {uriQuest.Host}:{uriQuest.Port}");
for (int i = 0; i < 5; i++)
{
try
{
Socket.Connect(uriQuest.Host, uriQuest.Port);
log.Info("Connected Successfully");
break;
}
catch (Exception ex)
{
log.Warn(ex);
log.Warn("Failed connection attempt: " + i);
}
}
if (!Socket.Connected)
{
log.Error("Unable to connect. Quitting...");
return(null);
}
log.Info("======== Sending Command to Tracker ========");
string cmd = "GET " + uriQuest.PathAndQuery + " " + httpProtocol + "\r\n" + headers.Replace("{host}", uriQuest.Host) + "\r\n";
Socket.Send(encoder.GetBytes(cmd));
try
{
byte[] data = new byte[32 * 1024];
using (MemoryStream memStream = new MemoryStream())
{
int dataLen = Socket.Receive(data);
while (dataLen > 0)
{
memStream.Write(data, 0, dataLen);
dataLen = Socket.Receive(data);
}
if (memStream.Length == 0)
{
log.Info("Error : Tracker Response is empty");
return(null);
}
TrackerResponse trackerResponse = new TrackerResponse(memStream);
memStream.Close();
Socket.Close();
if (trackerResponse.doRedirect)
{
return(MakeWebRequest(new Uri(trackerResponse.RedirectionURL), httpProtocol, headers));
}
log.Info("======== Tracker Response ========");
log.Info(trackerResponse.Headers.ToString());
if (trackerResponse.Dico == null)
{
log.Warn("*** Failed to decode tracker response :");
log.Warn(trackerResponse.Body);
}
return(trackerResponse);
}
}
catch (Exception ex)
{
Socket.Close();
log.Error(ex);
return(null);
}
}
/// <summary>
/// Connects to specified host.
/// </summary>
/// <param name="host">Host name.</param>
/// <param name="port">Port.</param>
public void Connect(string host,int port)
{
m_pSocket = new SocketEx();
m_pSocket.Connect(host,port);
string reply = m_pSocket.ReadLine();
while(!reply.StartsWith("220 ")){
reply = m_pSocket.ReadLine();
}
m_Connected = true;
}
/// <summary>
/// Connects to IMAP server.
/// </summary>
/// <param name="host">Host name.</param>
/// <param name="port">Port number. Default IMAP port is 143 and SSL port is 993.</param>
/// <param name="ssl">Specifies if to connected via SSL.</param>
public void Connect(string host,int port,bool ssl)
{
if(!m_Connected){
m_pSocket = new SocketEx();
m_pSocket.Connect(host,port,ssl);
string reply = m_pSocket.ReadLine();
reply = reply.Substring(reply.IndexOf(" ")).Trim(); // Remove Cmd tag
if(!reply.ToUpper().StartsWith("OK")){
m_pSocket.Disconnect();
m_pSocket = null;
throw new Exception("Server returned:" + reply);
}
m_Connected = true;
// Clear path separator, so next access will get it.
m_PathSeparator = '\0';
}
}
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="owner">Owner SIP_TransportLayer.</param>
/// <param name="remoteEP">Remote end point.</param>
/// <param name="ssl">Specifies if SSL pipe.</param>
public SipTcpPipe(SIP_TransportLayer owner,IPEndPoint remoteEP,bool ssl)
{
m_pTLayer = owner;
m_pSocket = new SocketEx();
m_pSocket.Connect(remoteEP,true);
if(ssl){
m_Transport = SIP_Transport.TLS;
m_pSocket.SwitchToSSL_AsClient();
}
else{
m_Transport = SIP_Transport.TLS;
}
// Add this to TCP pipes collection.
m_pTLayer.m_pTcpReceiviePipes.Add(this);
Start();
}
