100分求 端口扫描的源代码

Question

http://www.uncj.net/news/show.aspx?id=78

Answer 1

//拷贝过去，建一个工程，编译就可以
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Threading;namespace PortScanner
{
public class MainApp: System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtAddr;
private System.Windows.Forms.TextBox txtStart;
private System.Windows.Forms.TextBox txtEnd;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Splitter splitter1;
private System.Windows.Forms.ListBox lbResult;
private System.Windows.Forms.Button btnScan;
private System.Windows.Forms.ProgressBar progressBar1;
private System.Windows.Forms.Label lblStart;
private System.Windows.Forms.Label lblStop;
private System.Windows.Forms.Label lblNow;
private int port;
private string Addr;
private bool[] done = new bool[65536];
private int start;
private int end;
private Thread scanThread;
private bool OK;
public MainApp() 
{
InitializeComponent();
} private void InitializeComponent()
{
this.lbResult = new System.Windows.Forms.ListBox();
this.txtAddr = new System.Windows.Forms.TextBox();
this.txtStart = new System.Windows.Forms.TextBox();
this.txtEnd = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.splitter1 = new System.Windows.Forms.Splitter();
this.btnScan = new System.Windows.Forms.Button();
this.progressBar1 = new System.Windows.Forms.ProgressBar();
this.lblStart = new System.Windows.Forms.Label();
this.lblStop = new System.Windows.Forms.Label();
this.lblNow = new System.Windows.Forms.Label();
this.SuspendLayout();
// 
// lbResult
// 
this.lbResult.Dock = System.Windows.Forms.DockStyle.Right;
this.lbResult.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.lbResult.ItemHeight = 14;
this.lbResult.Location = new System.Drawing.Point(224, 0);
this.lbResult.Name = "lbResult";
this.lbResult.Size = new System.Drawing.Size(264, 270);
this.lbResult.TabIndex = 0;
// 
// txtAddr
// 
this.txtAddr.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.txtAddr.Location = new System.Drawing.Point(72, 16);
this.txtAddr.Name = "txtAddr";
this.txtAddr.Size = new System.Drawing.Size(136, 22);
this.txtAddr.TabIndex = 1;
this.txtAddr.Text = "";
// 
// txtStart
// 
this.txtStart.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.txtStart.Location = new System.Drawing.Point(72, 48);
this.txtStart.Name = "txtStart";
this.txtStart.Size = new System.Drawing.Size(136, 22);
this.txtStart.TabIndex = 2;
this.txtStart.Text = "";
this.txtStart.TextChanged += new System.EventHandler(this.txtStart_TextChanged);
// 
// txtEnd
// 
this.txtEnd.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.txtEnd.Location = new System.Drawing.Point(72, 80);
this.txtEnd.Name = "txtEnd";
this.txtEnd.Size = new System.Drawing.Size(136, 22);
this.txtEnd.TabIndex = 3;
this.txtEnd.Text = "";
this.txtEnd.TextChanged += new System.EventHandler(this.txtEnd_TextChanged);
// 
// label1
// 
this.label1.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label1.Location = new System.Drawing.Point(8, 16);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(64, 23);
this.label1.TabIndex = 4;
this.label1.Text = "主机地址";
// 
// label2
// 
this.label2.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label2.Location = new System.Drawing.Point(8, 80);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(64, 23);
this.label2.TabIndex = 5;
this.label2.Text = "结束端口";
// 
// label3
// 
this.label3.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label3.Location = new System.Drawing.Point(8, 48);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(64, 23);
this.label3.TabIndex = 6;
this.label3.Text = "起始端口";

Answer 2

// 
// splitter1
// 
this.splitter1.Dock = System.Windows.Forms.DockStyle.Right;
this.splitter1.Location = new System.Drawing.Point(221, 0);
this.splitter1.Name = "splitter1";
this.splitter1.RightToLeft = System.Windows.Forms.RightToLeft.Yes;
this.splitter1.Size = new System.Drawing.Size(3, 273);
this.splitter1.TabIndex = 7;
this.splitter1.TabStop = false;
// 
// btnScan
// 
this.btnScan.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.btnScan.Location = new System.Drawing.Point(72, 200);
this.btnScan.Name = "btnScan";
this.btnScan.TabIndex = 8;
this.btnScan.Text = "扫描";
this.btnScan.Click += new System.EventHandler(this.btnScan_Click);
// 
// progressBar1
// 
this.progressBar1.Location = new System.Drawing.Point(8, 112);
this.progressBar1.Name = "progressBar1";
this.progressBar1.Size = new System.Drawing.Size(200, 23);
this.progressBar1.Step = 1;
this.progressBar1.TabIndex = 9;
// 
// lblStart
// 
this.lblStart.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.lblStart.Location = new System.Drawing.Point(8, 144);
this.lblStart.Name = "lblStart";
this.lblStart.Size = new System.Drawing.Size(48, 23);
this.lblStart.TabIndex = 10;
// 
// lblStop
// 
this.lblStop.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.lblStop.Location = new System.Drawing.Point(160, 144);
this.lblStop.Name = "lblStop";
this.lblStop.Size = new System.Drawing.Size(48, 23);
this.lblStop.TabIndex = 11;
// 
// lblNow
// 
this.lblNow.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.lblNow.Location = new System.Drawing.Point(84, 144);
this.lblNow.Name = "lblNow";
this.lblNow.Size = new System.Drawing.Size(48, 23);
this.lblNow.TabIndex = 12;
// 
// MainApp
// 
this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);
this.ClientSize = new System.Drawing.Size(488, 273);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
  this.lblNow,
  this.lblStop,
  this.lblStart,
  this.progressBar1,
  this.btnScan,
  this.splitter1,
  this.label3,
  this.label2,
  this.label1,
  this.txtEnd,
  this.txtStart,
  this.txtAddr,
  this.lbResult});
this.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "MainApp";
this.Text = "端口扫描器";
this.ResumeLayout(false); }

Answer 3

[STAThread]
static void Main() 
{
Application.Run(new MainApp());
} private void btnScan_Click(object sender, System.EventArgs e)
{
            Thread process = new Thread(new ThreadStart(PortScan));
process.Start();
progressBar1.Minimum=Int32.Parse(txtStart.Text);
progressBar1.Maximum=Int32.Parse(txtEnd.Text);
lbResult.Items.Clear();
lbResult.Items.Add("端口扫描器 v1.0.");
lbResult.Items.Add("");
} private void PortScan()
{
start =Int32.Parse(txtStart.Text);
end = Int32.Parse(txtEnd.Text);
if ((start >= 0 && start <= 65536) && (end >= 0 && end <= 65536)) 
{
lbResult.Items.Add("开始扫描... (可能需要请您等待几分钟)");
Addr = txtAddr.Text;
for (int i=start; i<=end; i++) 
{
port = i;
                    scanThread = new Thread(new ThreadStart(Scan));
scanThread.Start();
System.Threading.Thread.Sleep(100);
progressBar1.Value=i;
lblNow.Text=i.ToString();
}
while (!OK) 
{
OK = true;
for (int i=start; i<=end; i++) 
{
if (!done[i]) 
{
OK = false;
break;
}
}                    
System.Threading.Thread.Sleep(1000);
}
lbResult.Items.Add("扫描结束!");
} 
else 
{
MessageBox.Show("可用的端口范围为[0-65536]");
}
} private void Scan() 
{
int portnow=port;
Thread Threadnow=scanThread;
done[portnow]=true;
TcpClient objTCP=null;

try
{
objTCP = new TcpClient(Addr, portnow);
lbResult.Items.Add("端口 " + portnow.ToString() + " 开放!");
}
catch
{}
} private void txtStart_TextChanged(object sender, System.EventArgs e)
{
lblStart.Text=txtStart.Text;
} private void txtEnd_TextChanged(object sender, System.EventArgs e)
{
lblStop.Text=txtEnd.Text;
}
}
}