获得MAC地址的四个方法

于 2008-10-08 22:37:00 发布
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分类专栏： C# 文章标签： byte output windows string 数据库 query

１．使用WMI。查询表Win32_NetworkAdapterConfiguration即可获得。

２．使用ARP协议。请看这里。

３．使用Windows命令nbtstat，也就是通过NetBIOS。请看这里。

４．查询SNMP（就是一种用于监视网络设备的协议）的MIB（管理信息数据库）。但这不是一件简单的事情，需要自己创建SNMP包，发送到交换机，然后对返回的响应进行解析。

下面是代碼：

  1. using System;
  2. using System.Diagnostics;
  3. using System.Management;
  4. using System.Net;
  5. using System.Runtime.InteropServices;
  6. using System.Text.RegularExpressions;
  8. namespace MACAddress
  9. {
  10.     /**//// <summary>
  11.     /// MainClass 的摘要描述。
  12.     /// </summary>
  13.     internal class MainClass
  14.     {
  15.         /**//// <summary>
  16.         /// 應用程式的主進入點。
  17.         /// </summary>
  18.         [STAThread]
  19.         private static void Main(string[] args)
  20.         {
  21.             GetMACByWMI();
  22.             IPAddress[] ips = GetLocalIP();
  23.             foreach (IPAddress ip in ips)
  24.             {
  25.                 Console.WriteLine(GetMacByARP(ip.ToString()));
  26.                 string mac = GetRemoteMacByNetBIOS(ip.ToString());
  27.                 if ( mac.Length != 0 )
  28.                     Console.WriteLine(mac);
  29.                 else
  30.                     Console.WriteLine("Fail to get MACAddress by NetBIOS");
  31.                 GetMACBySNMP(ip.ToString(),"yourGroupName@yourVlanNumber");
  32.             }
  33.             Console.ReadLine();
  34.         }
  36.         By WMI#region By WMI
  38.         public static void GetMACByWMI()
  39.         {
  40.             string query = "select MACAddress from Win32_NetworkAdapterConfiguration where IPEnabled='TRUE'";
  41.             ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
  42.             ManagementObjectCollection collection = searcher.Get();
  43.             foreach (ManagementObject mo in collection)
  44.             {
  45.                 string mac = mo["MACAddress"].ToString();
  46.                 Console.WriteLine(" Network card MAC Address is :{0}", mac);
  47.             }
  48.         }
  50.         #endregion
  52.         By ARP#region By ARP
  54.         [DllImport("Iphlpapi.dll")]
  55.         private static extern int SendARP(Int32 dest, Int32 host, ref Int64 mac, ref Int32 length);
  57.         [DllImport("Ws2_32.dll")]
  58.         private static extern Int32 inet_addr(string ip);
  60.         public static string GetMacByARP(string clientIP)
  61.         {
  62.             string ip = clientIP;
  63.             Int32 ldest = inet_addr(ip);
  64.             Int64 macinfo = new Int64();
  65.             Int32 len = 6;
  66.             try
  67.             {
  68.                 SendARP(ldest, 0, ref macinfo, ref len);
  69.             }
  70.             catch
  71.             {
  72.                 return "";
  73.             }
  74.             string originalMACAddress = Convert.ToString(macinfo, 16);
  75.             if (originalMACAddress.Length < 12)
  76.             {
  77.                 originalMACAddress = originalMACAddress.PadLeft(12, '0');
  78.             }
  79.             string macAddress;
  80.             if (originalMACAddress != "0000" && originalMACAddress.Length == 12)
  81.             {
  82.                 string mac1, mac2, mac3, mac4, mac5, mac6;
  83.                 mac1 = originalMACAddress.Substring(10, 2);
  84.                 mac2 = originalMACAddress.Substring(8, 2);
  85.                 mac3 = originalMACAddress.Substring(6, 2);
  86.                 mac4 = originalMACAddress.Substring(4, 2);
  87.                 mac5 = originalMACAddress.Substring(2, 2);
  88.                 mac6 = originalMACAddress.Substring(0, 2);
  89.                 macAddress = mac1 + "-" + mac2 + "-" + mac3 + "-" + mac4 + "-" + mac5 + "-" + mac6;
  90.             }
  91.             else
  92.             {
  93.                 macAddress = "";
  94.             }
  95.             return macAddress.ToUpper();
  96.         }
  98.         public static IPAddress[] GetLocalIP()
  99.         {
  100.             string hostName = Dns.GetHostName();
  101.             IPHostEntry ipEntry = Dns.GetHostByName(hostName);
  102.             return ipEntry.AddressList;
  103.         }
  105.         #endregion
  107.         By NetBIOS#region By NetBIOS
  108.         public static string GetRemoteMacByNetBIOS(string clientIP)
  109.         {
  110.             string ip = clientIP;
  111.             string dirResults = "";
  112.             ProcessStartInfo psi = new ProcessStartInfo();
  113.             Process proc = new Process();
  114.             psi.FileName = "nbtstat.exe";
  115.             //psi.RedirectStandardInput = false; 
  116.             psi.RedirectStandardOutput = true;
  117.             psi.RedirectStandardError = true;
  118.             psi.Arguments = "-A " + ip;
  119.             psi.UseShellExecute = false;
  120.             proc = Process.Start(psi);
  121.             dirResults = proc.StandardOutput.ReadToEnd();
  122.             string error = proc.StandardError.ReadToEnd();
  123.             proc.WaitForExit();
  124.             dirResults = dirResults.Replace("/r", "").Replace("/n", "").Replace("/t", "");
  125.             Regex reg = new Regex("Mac[ ]{0,}Address[ ]{0,}=[ ]{0,}(?((.)*?))__MAC", RegexOptions.IgnoreCase | RegexOptions.Compiled);
  126.             Match mc = reg.Match(dirResults + "__MAC");
  127.             if (mc.Success)
  128.             {
  129.                 return mc.Groups["key"].Value.ToUpper();
  130.             }
  131.             else
  132.             {
  133.                 return "";
  134.             }
  135.         }
  136.         #endregion
  138.         By SNMP#region By SNMP
  139.         public static void GetMACBySNMP(string ip,string vlan)
  140.         {
  141.             int commLength,mibLength,dataStart,dataLength;
  142.             string nextMib,value;
  143.             SNMP conn = new SNMP();
  144.             string mib = "1.3.6.1.2.1.17.4.3.1.1";
  145.             int orgMibLength = mib.Length;
  146.             byte[] response = new byte[1024];
  148.             nextMib = mib;
  150.             while ( true)
  151.             {
  152.                 response = conn.Get("getnext",ip,vlan,nextMib);
  153.                 commLength = Convert.ToInt16(response[6]);
  154.                 mibLength = Convert.ToInt16(response[23+commLength]);
  155.                 dataLength = Convert.ToInt16(response[25+commLength+mibLength]);
  156.                 dataStart = 26 + commLength + mibLength;
  157.                 value = BitConverter.ToString(response,dataStart,dataLength);
  158.                 nextMib = conn.GetNextMIB(response);
  160.                 if ( !(nextMib.Substring(0,orgMibLength) == mib))
  161.                 {
  162.                     break;
  163.                 }
  164.                 Console.WriteLine("{0}={1}",nextMib,value);
  166.             }
  167.         }
  168.         #endregion
  169.     }
  170. }

 

 

SNMP Class

 

  1. using System;
  2. using System.Net;
  3. using System.Net.Sockets;
  4. using System.Text;
  6. namespace MACAddress
  7. {
  8.     /**//**//**//// <summary>
  9.     /// SNMP 的摘要描述。
  10.     /// </summary>
  11.     public class SNMP
  12.     {
  13.         public SNMP()
  14.         {
  15.         }
  17.         public byte[] Get(string request, string host, string community, string mibString)
  18.         {
  19.             byte[] packet = new byte[1024];
  20.             byte[] mib = new byte[1024];
  21.             int snmpLen;
  22.             int comLen = community.Length;
  23.             string[] mibVals = mibString.Split('.');
  24.             int mibLen = mibVals.Length;
  25.             int cnt = 0;
  26.             int temp;
  27.             int orgmibLen = mibLen;
  28.             int pos = 0;
  29.             for (int i = 0; i < orgmibLen; i++)
  30.             {
  31.                 temp = Convert.ToInt16(mibVals[i]);
  32.                 if (temp > 127)
  33.                 {
  34.                     mib[cnt] = Convert.ToByte(128 + (temp / 128));
  35.                     mib[cnt + 1] = Convert.ToByte(temp - ((temp / 128) * 128));
  36.                     cnt += 2;
  37.                     mibLen++;
  38.                 }
  39.                 else
  40.                 {
  41.                     mib[cnt] = Convert.ToByte(temp);
  42.                     cnt++;
  43.                 }
  44.             }
  46.             snmpLen = 29 + comLen + mibLen - 1;
  47.             packet[pos++] = 0x30;
  48.             packet[pos++] = Convert.ToByte(snmpLen - 2);
  50.             packet[pos++] = 0x02;
  51.             packet[pos++] = 0x01;
  52.             packet[pos++] = 0x00;
  54.             packet[pos++] = 0x04;
  55.             packet[pos++] = Convert.ToByte(comLen);
  56.             byte[] data = Encoding.ASCII.GetBytes(community);
  57.             for (int i = 0; i < data.Length; i++)
  58.             {
  59.                 packet[pos++] = data[i];
  60.             }
  62.             if (request == "get")
  63.             {
  64.                 packet[pos++] = 0xA0;
  65.             }
  66.             else
  67.             {
  68.                 packet[pos++] = 0xA1;
  69.             }
  70.             packet[pos++] = Convert.ToByte(20 + mibLen - 1);
  72.             packet[pos++] = 0x02;
  73.             packet[pos++] = 0x04;
  74.             packet[pos++] = 0x00;
  75.             packet[pos++] = 0x00;
  76.             packet[pos++] = 0x00;
  77.             packet[pos++] = 0x01;
  79.             packet[pos++] = 0x02;
  80.             packet[pos++] = 0x01;
  81.             packet[pos++] = 0x00;
  83.             packet[pos++] = 0x02;
  84.             packet[pos++] = 0x01;
  85.             packet[pos++] = 0x00;
  87.             packet[pos++] = 0x30;
  89.             packet[pos++] = Convert.ToByte(6 + mibLen - 1);
  90.             packet[pos++] = 0x30;
  91.             packet[pos++] = Convert.ToByte(6 + mibLen - 1 - 2);
  92.             packet[pos++] = 0x06;
  93.             packet[pos++] = Convert.ToByte(mibLen - 1);
  95.             packet[pos++] = 0x2b;
  96.             for (int i = 2; i < mibLen; i++)
  97.             {
  98.                 packet[pos++] = Convert.ToByte(mib[i]);
  99.             }
  100.             packet[pos++] = 0x05;
  101.             packet[pos++] = 0x00;
  103.             Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
  104.             sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 5000);
  105.             IPHostEntry ihe = Dns.Resolve(host);
  106.             IPEndPoint iep = new IPEndPoint(ihe.AddressList[0], 161);
  107.             EndPoint ep = (EndPoint) iep;
  108.             sock.SendTo(packet, snmpLen, SocketFlags.None, iep);
  110.             try
  111.             {
  112.                 int recv = sock.ReceiveFrom(packet, ref ep);
  113.             }
  114.             catch (SocketException)
  115.             {
  116.                 packet[0] = 0xff;
  117.             }
  118.             return packet;
  119.         }
  121.         public string GetNextMIB(byte[] mibIn)
  122.         {
  123.             string output = "1.3";
  124.             int commLength = mibIn[6];
  125.             int mibStart = 6 + commLength + 17;
  126.             int mibLength = mibIn[mibStart] - 1;
  127.             mibStart += 2;
  128.             int mibValue;
  130.             for (int i = mibStart; i < mibStart + mibLength; i++)
  131.             {
  132.                 mibValue = Convert.ToInt16(mibIn[i]);
  133.                 if (mibValue > 128)
  134.                 {
  135.                     mibValue = (mibValue / 128) * 128 + Convert.ToInt16(mibIn[i + 1]);
  136.                     i++;
  137.                 }
  138.                 output += "." + mibValue;
  139.             }
  140.             return output;
  141.         }
  142.     }
  143. }
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