private void StartConnect(SmbScanTaskInfo ti)
{
if (ti.Socket != null)
{
base.CloseSocket(ti.Socket);
}
ti.Socket = this.GetNextSocket(ti.Timeout);
ti.LastTime = DateTime.Now;
ti.IsStarted = true;
lock (m_hs_task_running) m_hs_task_running.Add(ti);
SocketAsyncEventArgs sae = this.PopSAE();
sae.SetBuffer(0, 0);
sae.RemoteEndPoint = ti.EndPoint;
sae.UserToken = ti;
try {
if (!ti.Socket.ConnectAsync(sae))
{
IOProcessPool.QueueWork(this.ProcessConnect, sae);
}
} catch (Exception ex) {
this.PushSAE(sae);
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, ti.CanConnect, "[SOCKET]-" + ex.Message));
}
}
//private bool _IsDisposed = false;
//public bool IsDisposed {
// get { return _IsDisposed; }
//}
public SmbScanner(int nMaxTask)
{
m_dic_netbios.Add(1, "NetBIOS computer name ");
m_dic_netbios.Add(2, "NetBIOS domain name ");
m_dic_netbios.Add(3, "DNS computer name ");
m_dic_netbios.Add(4, "DNS domain name ");
m_dic_netbios.Add(6, "Flags ");
m_dic_netbios.Add(7, "Timestamp ");
m_se = new Semaphore(nMaxTask, nMaxTask);
m_que_sae = new Queue <SocketAsyncEventArgs>();
m_que_task = new Queue <SmbScanTaskInfo>();
m_hs_task_running = new HashSet <SmbScanTaskInfo>();
for (int i = 0; i < nMaxTask; i++)
{
SmbScanTaskInfo ti = new SmbScanTaskInfo();
SocketAsyncEventArgs sae = new SocketAsyncEventArgs();
sae.Completed += new EventHandler <SocketAsyncEventArgs>(IO_Completed);
sae.SetBuffer(new byte[1500], 0, 1500);
ti.RecvSAE = sae;
sae.UserToken = ti;
m_que_task.Enqueue(ti);
}
m_byNTLMSSP = Encoding.UTF8.GetBytes("NTLMSSP\0");
m_byNext = SmbScanner.GetNextVal(m_byNTLMSSP);
new Thread(this.CheckTimeout)
{
IsBackground = true
}.Start();
}
private void EndTask(SmbScanTaskInfo ti, ScanEventArgs e)
{
this.CloseSocket(ti.Socket);
ti.Socket = null;
ti.IsStarted = false;
lock (m_hs_task_running) m_hs_task_running.Remove(ti);
lock (m_obj_sync) {
if (!base._IsDisposed)
{
m_que_task.Enqueue(ti);
}
}
base.OnCompleted(e);
m_se.Release();
}
protected override uint OnScan(int nPort, EndPoint endPoint, int nProbes, int nTimeout, int nRetry, int nTotalTimeout, bool bUseNullProbes)
{
lock (m_obj_sync) {
if (base._IsDisposed)
{
throw new ObjectDisposedException("TCPScanner", "The scanner was disposed");
}
}
m_se.WaitOne();
SmbScanTaskInfo ti = this.CreateTaskInfo(445, endPoint, 0, nTimeout, nRetry, nTotalTimeout, false);
ti.StartTime = DateTime.Now;
this.StartConnect(ti);
return(ti.TaskID);
}
private void ProcessConnect(SocketAsyncEventArgs e)
{
SmbScanTaskInfo ti = e.UserToken as SmbScanTaskInfo;
ti.LastTime = DateTime.Now;
Socket sock = ti.Socket;
if (e.SocketError != SocketError.Success)
{
this.PushSAE(e);
if (++ti.RunedRetry > ti.Retry)
{
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, ti.CanConnect, e.SocketError.ToString()));
}
else
{
this.StartConnect(ti);
}
return;
}
ti.RunedRetry = 0;
ti.CanConnect = true;
try {
if (!sock.ReceiveAsync(ti.RecvSAE))
{
IOProcessPool.QueueWork(this.ProcessRecv, ti.RecvSAE);
}
} catch (Exception ex) {
this.PushSAE(e);
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, ti.CanConnect, "[SOCKET]-" + ex.Message));
return;
}
try {
Array.Copy(m_bySmb1, e.Buffer, m_bySmb1.Length);
e.SetBuffer(0, m_bySmb1.Length);
if (!sock.SendAsync(e))
{
IOProcessPool.QueueWork(this.ProcessSend, e);
}
} catch {
this.PushSAE(e);
}
}
private SmbScanTaskInfo CreateTaskInfo(int nPort, EndPoint endPoint, int nProbes, int nTimeout, int nRetry, int nTotalTimeout, bool bUseNullProbe)
{
SmbScanTaskInfo ti = null;
lock (m_obj_sync) {
ti = m_que_task.Dequeue();
}
ti.Retry = nRetry;
ti.RunedRetry = 0;
ti.Port = nPort;
ti.EndPoint = endPoint;
ti.IsStarted = false;
ti.Socket = this.GetNextSocket(nTimeout);
ti.CanConnect = false;
ti.Timeout = nTimeout;
ti.TotalTimeout = nTotalTimeout;
ti.Step = 1;
return(ti);
}
private void ProcessRecv(SocketAsyncEventArgs e)
{
SmbScanTaskInfo ti = e.UserToken as SmbScanTaskInfo;
ti.LastTime = DateTime.Now;
if (e.SocketError != SocketError.Success || e.BytesTransferred < 1)
{
//if (ti.RunedRetry < ti.Retry) {
// ti.Step = 1;
// this.StartConnect(ti);
//} else this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, ti.CanConnect, e.SocketError.ToString()));
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, ti.CanConnect, e.SocketError.ToString()));
return;
}
if (!SmbScanner.CheckHeader(e.Buffer))
{
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, true, "The header is not smb"));
return;
}
if (ti.Step == 1)
{
SocketAsyncEventArgs sae = this.PopSAE();
try {
Array.Copy(m_bySmb2, sae.Buffer, m_bySmb2.Length);
sae.SetBuffer(0, m_bySmb2.Length);//buffer
if (!ti.Socket.SendAsync(sae))
{
IOProcessPool.QueueWork(this.ProcessSend, sae);
}
} catch {
this.PushSAE(sae);
}
try {
ti.Step++;
if (!ti.Socket.ReceiveAsync(e))
{
IOProcessPool.QueueWork(this.ProcessRecv, e);
}
} catch (Exception ex) {
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, ex.Message));
return;
}
}
else
{
string strResult = string.Empty;
int nOffsetNtlmssp = SmbScanner.KmpIndexOf(0, e.Buffer, m_byNTLMSSP, m_byNext);
if (nOffsetNtlmssp == -1)
{
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, "SMB", -1, "", e.Buffer, e.BytesTransferred));
return;
}
lock (m_strBuffer) {
try {
m_strBuffer.Remove(0, m_strBuffer.Length);
m_strBuffer.Append("Target Name :");
m_strBuffer.Append(Encoding.Unicode.GetString(e.Buffer, e.Buffer[nOffsetNtlmssp + 16] + nOffsetNtlmssp, e.Buffer[nOffsetNtlmssp + 12]));
int nOffsetData = e.Buffer[nOffsetNtlmssp + 16] + nOffsetNtlmssp + e.Buffer[nOffsetNtlmssp + 12];
while (e.Buffer[nOffsetData] != 0)
{
if (m_dic_netbios.ContainsKey(e.Buffer[nOffsetData]))
{
m_strBuffer.Append("\r\n" + m_dic_netbios[e.Buffer[nOffsetData]] + ":");
}
else
{
m_strBuffer.Append("\r\n" + e.Buffer[nOffsetData].ToString("X2") + ":");
}
if (!m_dic_netbios.ContainsKey(e.Buffer[nOffsetData]) || e.Buffer[nOffsetData] == 6 || e.Buffer[nOffsetData] == 7)
{
for (int i = nOffsetData + 4; i < nOffsetData + 4 + e.Buffer[nOffsetData + 2]; i++)
{
m_strBuffer.Append(((int)e.Buffer[i]).ToString("X2"));
}
}
else
{
m_strBuffer.Append(Encoding.Unicode.GetString(e.Buffer, nOffsetData + 4, e.Buffer[nOffsetData + 2]));
}
nOffsetData += e.Buffer[nOffsetData + 2] + 4;
}
m_strBuffer.Append("\r\n----------OS----------\r\n" + Encoding.Unicode.GetString(e.Buffer, nOffsetData + 4, e.BytesTransferred - nOffsetData - 4).Replace("\0", "\r\n"));
strResult = m_strBuffer.ToString();
} catch {
strResult = "[ERROR] - Can not format the data";
}
}
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, "SMB", -1, strResult, e.Buffer, e.BytesTransferred));
}
}
