用c#监控网络流量

2022-07-15 80酷酷网 80kuku.com

　　监控|流量|网络以下的代码的原作是opensource的一个叫sniffer.net的，用vb.net写的，这里只是简单的用c#翻译了一下，暂时还只能监控所有数据包，不能监控某一个进程的数据包,代码如下：
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Runtime.InteropServices;

namespace UpdateTester
{
/**//// <summary>
/// Monitor 的摘要说明。
/// </summary>
public class Monitor
{
public delegate void NewPacketEventHandler(Monitor m, Packet p);
public event NewPacketEventHandler NewPacket;
private Socket m_Monitor;
private IPAddress m_Ip;
private byte[] m_Buffer = new byte[65535];
private const System.Int32 IOC_VENDOR = 0x18000000;
private const int IOC_IN = -2147483648;
private const int SIO_RCVALL = IOC_IN ^ IOC_VENDOR ^ 1;
private const int SECURITY_BUILTIN_DOMAIN_RID = 0x20;
private const int DOMAIN_ALIAS_RID_ADMINS = 0x220;

public System.Net.IPAddress IP
{
get { return m_Ip; }
}

public byte[] Buffer
{
get { return m_Buffer; }
}

public Monitor()
{
   //
   // TODO: 在此处添加构造函数逻辑
   //
}

public Monitor(IPAddress IpAddress)
{
   if (!(Environment.OSVersion.Platform == PlatformID.Win32NT) && Environment.OSVersion.Version.Major<5)
   {
    throw new NotSupportedException("This program requires Windows 2000, Windows XP or Windows .NET Server!");
   }
   m_Ip = IpAddress;
}

public void Start()
{
   if (m_Monitor==null)
   {
    try
    {
     m_Monitor = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
     m_Monitor.Bind(new IPEndPoint(IP, 0));
     m_Monitor.IOControl(SIO_RCVALL, BitConverter.GetBytes(1), null);
     m_Monitor.BeginReceive(m_Buffer, 0, m_Buffer.Length, SocketFlags.None, new AsyncCallback(OnReceive), null);
    }
    catch (Exception e)
    {
     m_Monitor = null;
     throw new SocketException();
    }
   }
}

public void Stop()
{
   if (m_Monitor!=null)
   {
    m_Monitor.Close();
   }
   m_Monitor = null;
}

public void OnReceive(System.IAsyncResult ar)
{
   try
   {
    int received = m_Monitor.EndReceive(ar);

    try
    {
     if (m_Monitor!=null)
     {
      byte[] pkt = new byte[received];
      Array.Copy(Buffer, 0, pkt, 0, received);
      OnNewPacket(new Packet(pkt, DateTime.Now));
     }
    }
    catch(Exception e)
    {
     throw;
    }

    m_Monitor.BeginReceive(Buffer, 0, Buffer.Length, SocketFlags.None, new AsyncCallback(OnReceive), null);
   }
   catch (Exception e)
   {

}
}

protected void OnNewPacket(Packet p)
{
NewPacket(this, p);
}
}
}

using System;
using System.Text;
using System.Net;
using System.Net.Sockets;

namespace UpdateTester
{

public enum Precedence
{
Routine = 0,
Priority = 1,
Immediate = 2,
Flash = 3,
FlashOverride = 4,
CRITICECP = 5,
InternetworkControl = 6,
NetworkControl = 7
}

public enum Delay
{
NormalDelay = 0,
LowDelay = 1
}

public enum Throughput
{
NormalThroughput = 0,
HighThroughput = 1
}

public enum Reliability
{
NormalReliability = 0,
HighReliability = 1
}

public enum Protocol
{
Ggp = 3,
Icmp = 1,
Idp = 22,
Igmp = 2,
IP = 4,
ND = 77,
Pup = 12,
Tcp = 6,
Udp = 17,
Other = -1
}
/**//// <summary>
/// Packet 的摘要说明。
/// </summary>
public class Packet
{

private byte[] m_Raw;
private DateTime m_Time;
private int m_Version;
private int m_HeaderLength;
private Precedence m_Precedence;
private Delay m_Delay;
private Throughput m_Throughput;
private Reliability m_Reliability;
private int m_TotalLength;
private int m_Identification;
private int m_TimeToLive;
private Protocol m_Protocol;
private byte[] m_Checksum;
private string m_SourceAddress;
private string m_DestinationAddress;
private int m_SourcePort;
private int m_DestinationPort;

public Packet()
{
   //
   // TODO: 在此处添加构造函数逻辑
   //
}
//
// public Packet(byte[] raw):(byte[] raw, DateTime time)
// {
//   Packet(raw, DateTime.Now);
// }

public Packet(byte[] raw, DateTime time)
{
   if (raw==null)
   {
    throw new ArgumentNullException();
   }
   if (raw.Length<20)
   {
    throw new ArgumentException();
   }

   this.m_Raw = raw;
   this.m_Time = time;
   this.m_HeaderLength = (raw[0] & 0xF) * 4;
   if ((raw[0] & 0xF) < 5) {throw new ArgumentException();}
   this.m_Precedence = (Precedence)((raw[1] & 0xE0) >> 5);
   this.m_Delay = (Delay)((raw[1] & 0x10) >> 4);
   this.m_Throughput = (Throughput)((raw[1] & 0x8) >> 3);
   this.m_Reliability = (Reliability)((raw[1] & 0x4) >> 2);
   this.m_TotalLength = raw[2] * 256 + raw[3];
   if ( ! (this.m_TotalLength == raw.Length)) { throw new ArgumentException();} // invalid size of packet;
   this.m_Identification = raw[4] * 256 + raw[5];
   this.m_TimeToLive = raw[8];

m_Protocol = (Protocol)raw[9];

   m_Checksum = new byte[2];
   m_Checksum[0] = raw[11];
   m_Checksum[1] = raw[10];

   try
   {
    m_SourceAddress = GetIPAddress(raw, 12);
    m_DestinationAddress = GetIPAddress(raw, 16);
   }
   catch (Exception e)
   {
    throw;
   }

   if (m_Protocol == Protocol.Tcp || m_Protocol == Protocol.Udp)
   {
    m_SourcePort = raw[m_HeaderLength] * 256 + raw[m_HeaderLength + 1];
    m_DestinationPort = raw[m_HeaderLength + 2] * 256 + raw[m_HeaderLength + 3];
   }
   else
   {

    m_SourcePort = -1;
    m_DestinationPort = -1;
   }
}

public string GetIPAddress(byte[] bArray, int nStart)
{
byte[] tmp = new byte[4];

   if (bArray.Length > nStart + 2)
   {
    tmp[0] = bArray[nStart];
    tmp[1] = bArray[nStart + 1];
    tmp[2] = bArray[nStart + 2];
    tmp[3] = bArray[nStart + 3];
   }

return tmp[0] + "." + tmp[1] + "." + tmp[2] + "." + tmp[3];
}

public int TotalLength
{
get { return m_TotalLength; }
}

public DateTime Time
{
get { return this.m_Time; }
}

public Protocol Protocol
{
get { return this.m_Protocol; }
}

public string SourceAddress
{
get { return this.m_SourceAddress; }
}

public string Source
{
   get
   {
    if ( m_SourcePort != -1 )
    {
     return SourceAddress.ToString() + ":" + m_SourcePort.ToString();
    }
    else
    {
     return SourceAddress.ToString();
    }
   }
}

public string Destination
{
   get
   {
    if (this.m_DestinationPort != -1)
    {
     return DestinationAddress.ToString() + ":" + m_DestinationPort.ToString();
    }
    else
    {
     return DestinationAddress.ToString();
     }
   }
}

public string DestinationAddress
{

   get
   {
    return m_DestinationAddress;
   }
}
}
}

在主程序里
private Monitor[] m_PacketMonitors;
private ArrayList m_Packets;
private System.Windows.Forms.StatusBar statusBar1;
private int m_PacketsSize;

执行方法中
private void StartMonitor()
{
IPAddress[] hosts = Dns.Resolve(Dns.GetHostName()).AddressList;

   if (hosts.Length == 0) { throw new NotSupportedException("This computer does not have non-loopback interfaces installed!");}
   for (int i=0; i<hosts.Length; i++)
   {
   }

   m_PacketMonitors = new Monitor[1];
   m_Packets = new ArrayList();
   m_PacketMonitors[0] = new Monitor(hosts[0]);

// 添加代理，每次有新的packet到时都出发下面哪个动作
m_PacketMonitors[0].NewPacket+=new Monitor.NewPacketEventHandler(this.OnNewPacket);
m_PacketMonitors[0].Start();
}

// 这个方法用于把packet显示到一个地方

private void OnNewPacket(Monitor m, Packet p)
{
   m_Packets.Add(p);
   m_PacketsSize += p.TotalLength;
   try
   {
    txtLog.Text += p.Time.ToString()+p.Protocol.ToString()+p.Source.ToString()+p.Destination.ToString()+p.TotalLength.ToString();

   }
   catch (Exception e)
   {
    MessageBox.Show(e.Message);
   }

statusBar1.Text = String.Format("Intercepted {0} packet(s) [{1} bytes]", m_Packets.Count, m_PacketsSize);
}