多线程端口扫描程序代码,CSharp代码库,德仔网

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【CSharp】多线程端口扫描程序
作者:Dezai.CN / 发布于2012/12/6/ 497
using System; 
using System.Drawing; 
using System.Collections; 
using System.ComponentModel; 
using System.Windows.Forms; 
//增加的如下.. 
using System.Data; 
using System.Net.Sockets; 
using System.Net; 
using System.IO; 
using System.Text; 
using System.Threading; 

namespace iPortScan 
{ 
/// <summary> 
/// Summary description for Form1. 
/// </summary> 
public class Form1 : System.Windows.Forms.Form 
{ 
//该处放的是程序要用到的公共变量 
public string scanHost = Dns.GetHostName(); //默认当前本机IP 
public Int32 tport = 0; //当前连接端口编号 
public Int32 connState = 0; //扫描状态 
public int portSum = 0 ; //端口总计 
public bool endThread = false; //结束状态 
public AutoResetEvent asyncOpsAreDone = new AutoResetEvent(false); 
private System.Windows.Forms.Label label1; 
private System.Windows.Forms.TextBox txtHostname; 
private System.Windows.Forms.Button cmdExec; 
private System.Windows.Forms.ListBox logList; 
public System.Windows.Forms.CheckedListBox portList; 
private System.Windows.Forms.Label label2; 
private System.Windows.Forms.Label label3; 
private System.Windows.Forms.NumericUpDown sNum; 
private System.Windows.Forms.NumericUpDown eNum; 
private System.Windows.Forms.CheckBox showdie; 
private System.Windows.Forms.Label label4; 
private System.Windows.Forms.Button button1; 
private System.Windows.Forms.ToolTip toolTip1; 
private System.Windows.Forms.StatusBar statusBar1; 
private System.Windows.Forms.LinkLabel linkLabel1; 
private System.Windows.Forms.LinkLabel linkLabel2; 
private System.ComponentModel.IContainer components; 
/* 
此处省略了各个调用的控件的属性设置代码 
*/ 
static void Main() 
{ 
Application.Run(new Form1()); 
} 

private void cmdExec_Click(object sender, System.EventArgs e) 
{ 
Int32 startPort = (Int32)sNum.Value; 
Int32 endPort = (Int32)eNum.Value; 
if(txtHostname.Text.Length==0) 
{ 
MessageBox.Show("请输入一个主机的名称吧！","系统提示"); 
txtHostname.Text = scanHost.ToString(); 
txtHostname.Focus(); 
return; 
} 
if(startPort>endPort) 
{ 
MessageBox.Show("错误，起始端口必须要小于结束的端口!","系统提示"); 
startPort = endPort-1; 
sNum.Text = startPort.ToString(); 
sNum.Focus(); 
return ; 
} 

if(cmdExec.Text=="&Scan") 
{ 
endThread= false; 
cmdExec.Text= "&Stop"; 
} 
else 
{ 
endThread= true; 
cmdExec.Text= "&Scan"; 
} 

if(endThread!=true) 
{ 
connState = 0; 
portSum = 0; 
scanHost = txtHostname.Text; 
try 
{ 
IPAddress ipaddr =(IPAddress)Dns.Resolve(scanHost).AddressList.GetValue(0); 
txtHostname.Text = ipaddr.ToString(); 
} 
catch 
{ 
txtHostname.Focus(); 
MessageBox.Show("请输入正确的主机地址,该地址DNS无法解析","系统提示"); 
return ; 
} 
logList.Items.Clear(); 

for (Int32 threadNum = startPort; threadNum <=endPort; threadNum++) 
{ 
ThreadPool.QueueUserWorkItem(new WaitCallback(Startscan),threadNum); 
logList.Items.Add ("扫描端口:" + threadNum.ToString()); 
} 

} 
} 
public void Startscan(Object state) 
{ 
Int32 port = (Int32) state; 
string tMsg = ""; 
string getData = ""; 
int lindex = 0; 
int eindex = 0; 
connState++; //判断线程数目 
if(endThread==true) 
{ 
if(connState==((Int32)eNum.Value-(Int32)sNum.Value)) 
{ 
cmdExec.Text = "&Scan"; 
logList.Items.Add ("扫描完毕!"); 
} 
else 
{ 
cmdExec.Text = "&Stop"; 
logList.Items.Add ("正在停止对"+port.ToString()+"端口的扫描线程"); 
} 
logList.Items.Add("结束线程:"+port.ToString()); 
asyncOpsAreDone.Close(); 
} 
else 
{ 
try 
{ 
TcpClient tcp = new TcpClient(); 
tcp.Connect(scanHost,port); 
//该处如果建立连接错误的话，将不执行下面的代码.. 
portSum ++; 
lindex = portList.Items.Add(port.ToString() + "端口开放",false); 
portList.SelectedIndex=lindex; 
Stream sm = tcp.GetStream(); 
sm.Write(Encoding.Default.GetBytes(tMsg.ToCharArray()),0,tMsg.Length); 
StreamReader sr = new StreamReader(tcp.GetStream(),Encoding.Default); 
getData = sr.ReadLine(); 
if(lindex!=0&&getData.Length!=0) 
{ 
tMsg = " +-" + port.ToString() + "端口数据:"+getData.ToString(); 
eindex = portList.Items.Add(tMsg); //插入一条信息记录 
portList.Items.Insert(lindex+1,tMsg); 
portList.Items.RemoveAt(eindex); 
} 
sr.Close(); 
sm.Close(); 
tcp.Close(); 
} 
catch 
{ 
//显示坏死的端口 
if(showdie.Checked==true) 
{ 
portList.Items.Add(port.ToString()+"端口无法连接,回传数据为空"); 
} 
} 
finally 
{ 
Thread.Sleep(0); 
logList.Items.Add("结束线程:"+port.ToString()); 
asyncOpsAreDone.Close(); 
statusBar1.Text = "端口总计:"+portSum.ToString() ; 
if(connState==((Int32)eNum.Value-(Int32)sNum.Value)) 
{ 
cmdExec.Text = "&Scan"; 
} 
} 
} 
} 

private void button1_Click(object sender, System.EventArgs e) 
{ 
Application.Exit(); 
}
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　端口扫描　
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