.Net操作IP地址库代码,CSharp代码库,德仔网

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【CSharp】 .Net操作IP地址库
作者:dezai / 发布于2014/6/16/ 454

	以下是我使用的类:

	/**//******************************************************************
	** File Name:IPScaner.cs
	** Copyright (c) 2004-2005 PPTech Studio(PPTech.Net)
	** Creater:Rexsp(MSN:yubo@x263.net)
	** Create Date:2004-12-27 20:10:28
	** Modifier:
	** Modify Date:
	** Description:to scan the ip location from qqwry.dat
	** Version: IPScaner 1.0.0
	******************************************************************/
	using System;
	using System.IO;
	using System.Collections;
	using System.Text;
	using System.Text.RegularExpressions;
	namespace PPTech.WebSite.BusinessRules
	{
	/**//// <summary>
	/// to scan the ip location from qqwry.dat
	/// </summary>
	public class IPScaner
	{
	 #region 私有成员
	 private string dataPath;
	 private string ip;
	 private string country;
	 private string local;

	 private long firstStartIp=0;
	 private long lastStartIp=0;
	 private FileStream objfs = null;
	 private long startIp=0;
	 private long endIp=0;
	 private int countryFlag=0;
	 private long endIpOff=0;
	 private string errMsg=null;
	 #endregion

	 #region 构造函数
	 public IPScaner()
	 {
	 //
	 // TODO: 在此处添加构造函数逻辑
	 //
	 }
	 #endregion

	 #region 公共属性
	 public string DataPath
	 {
	 set{dataPath=value;}
	 }
	 public string IP
	 {
	 set{ip=value;}
	 }
	 public string Country
	 {
	 get{return country;}
	 }
	 public string Local
	 {
	 get{return local;}
	 }
	 public string ErrMsg
	 {
	 get{return errMsg;}
	 }
	 #endregion

	 #region 搜索匹配数据
	 private int QQwry()
	 {
	 string pattern = @"(((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))\.){3}((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))";
	 Regex objRe = new Regex(pattern);
	 Match objMa = objRe.Match(ip);
	 if(!objMa.Success)
	 {
	 this.errMsg="IP格式错误";
	 return 4;
	 }

	 long ip_Int = this.IpToInt(ip);
	 int nRet=0;
	 if(ip_Int>=IpToInt("127.0.0.0")&&ip_Int<=IpToInt("127.255.255.255"))
	 {
	 this.country="本机内部环回地址";
	 this.local="";
	 nRet=1;
	 }
	 else if((ip_Int>=IpToInt("0.0.0.0")&&ip_Int<=IpToInt("2.255.255.255"))||(ip_Int>=IpToInt("64.0.0.0")&&ip_Int<=IpToInt("126.255.255.255"))||(ip_Int>=IpToInt("58.0.0.0")&&ip_Int<=IpToInt("60.255.255.255")))
	 {
	 this.country="网络保留地址";
	 this.local="";
	 nRet=1;
	 }
	 objfs = new FileStream(this.dataPath, FileMode.Open, FileAccess.Read);
	 try
	 {
	 //objfs.Seek(0,SeekOrigin.Begin);
	 objfs.Position=0;
	 byte[] buff = new Byte[8] ;
	 objfs.Read(buff,0,8);
	 firstStartIp=buff[0]+buff[1]*256+buff[2]*256*256+buff[3]*256*256*256;
	 lastStartIp=buff[4]*1+buff[5]*256+buff[6]*256*256+buff[7]*256*256*256;
	 long recordCount=Convert.ToInt64((lastStartIp-firstStartIp)/7.0);
	 if(recordCount<=1)
	 {
	 country="FileDataError";
	 objfs.Close();
	 return 2;
	 }
	 long rangE=recordCount;
	 long rangB=0;
	 long recNO=0;
	 while(rangB<rangE-1)
	 {
	 recNO=(rangE+rangB)/2;
	 this.GetStartIp(recNO);
	 if(ip_Int==this.startIp)
	 {
	 rangB = recNO;
	 break;
	 }
	 if(ip_Int>this.startIp)
	 rangB=recNO;
	 else
	 rangE=recNO;
	 }
	 this.GetStartIp(rangB);
	 this.GetEndIp();
	 if(this.startIp<=ip_Int&&this.endIp>=ip_Int)
	 {
	 this.GetCountry();
	 this.local=this.local.Replace("（我们一定要解放台湾！！！）","");
	 }
	 else
	 {
	 nRet=3;
	 this.country="未知";
	 this.local="";
	 }
	 objfs.Close();
	 return nRet;
	 }
	 catch
	 {
	 return 1;
	 }

	 }
	 #endregion

	 #region IP地址转换成Int数据
	 private long IpToInt(string ip)
	 {
	 char[] dot = new char[]{'.'};
	 string [] ipArr = ip.Split(dot);
	 if(ipArr.Length==3)
	 ip=ip+".0";
	 ipArr=ip.Split(dot);

	 long ip_Int=0;
	 long p1=0, p2=0, p3=0, p4=0;
	 try
	 {
	 p1 = long.Parse(ipArr[0]) * 256 * 256 * 256;
	 p2 = long.Parse(ipArr[1]) * 256 * 256;
	 p3 = long.Parse(ipArr[2]) * 256;
	 p4 = long.Parse(ipArr[3]);
	 ip_Int = p1 + p2 + p3 + p4;
	 }
	 catch (Exception ex)
	 {
	 string msg = string.Format("Message:{0}ip:{1}ip1:{2}ip2:{3}ip3:{4}ip4:{5}", ex.Message, ip, p1, p2, p3, p4);
	 MyDLL.MyErr.WebLog(msg);
	 }
	 return ip_Int;
	 }
	 #endregion

	 #region int转换成IP
	 private string IntToIP(long ip_Int)
	 {
	 long seg1=(ip_Int&0xff000000)>>24;
	 if(seg1<0)
	 seg1+=0x100;
	 long seg2=(ip_Int&0x00ff0000)>>16;
	 if(seg2<0)
	 seg2+=0x100;
	 long seg3=(ip_Int&0x0000ff00)>>8;
	 if(seg3<0)
	 seg3+=0x100;
	 long seg4=(ip_Int&0x000000ff);
	 if(seg4<0)
	 seg4+=0x100;
	 string ip=seg1.ToString()+"."+seg2.ToString()+"."+seg3.ToString()+"."+seg4.ToString();

	 return ip;
	 }
	 #endregion

	 #region 获取起始IP范围
	 private long GetStartIp(long recNO)
	 {
	 long offSet = firstStartIp+recNO*7;
	 //objfs.Seek(offSet,SeekOrigin.Begin);
	 objfs.Position=offSet;
	 byte [] buff = new Byte[7];
	 objfs.Read(buff,0,7);

	 endIpOff=Convert.ToInt64(buff[4].ToString())+Convert.ToInt64(buff[5].ToString())*256+Convert.ToInt64(buff[6].ToString())*256*256;
	 startIp=Convert.ToInt64(buff[0].ToString())+Convert.ToInt64(buff[1].ToString())*256+Convert.ToInt64(buff[2].ToString())*256*256+Convert.ToInt64(buff[3].ToString())*256*256*256;
	 return startIp;
	 }
	 #endregion

	 #region 获取结束IP
	 private long GetEndIp()
	 {
	 //objfs.Seek(endIpOff,SeekOrigin.Begin);
	 objfs.Position=endIpOff;
	 byte [] buff = new Byte[5];
	 objfs.Read(buff,0,5);
	 this.endIp=Convert.ToInt64(buff[0].ToString())+Convert.ToInt64(buff[1].ToString())*256+Convert.ToInt64(buff[2].ToString())*256*256+Convert.ToInt64(buff[3].ToString())*256*256*256;
	 this.countryFlag=buff[4];
	 return this.endIp;
	 }
	 #endregion

	 #region 获取国家/区域偏移量
	 private string GetCountry()
	 {
	 switch(this.countryFlag)
	 {
	 case 1:
	 case 2:
	 this.country=GetFlagStr(this.endIpOff+4);
	 this.local=( 1 == this.countryFlag )?" ":this.GetFlagStr(this.endIpOff+8);
	 break;
	 default:
	 this.country=this.GetFlagStr(this.endIpOff+4);
	 this.local=this.GetFlagStr(objfs.Position);
	 break;
	 }
	 return " ";
	 }
	 #endregion

	 #region 获取国家/区域字符串
	 private string GetFlagStr(long offSet)
	 {
	 int flag=0;
	 byte [] buff = new Byte[3];
	 while(1==1)
	 {
	 //objfs.Seek(offSet,SeekOrigin.Begin);
	 objfs.Position=offSet;
	 flag = objfs.ReadByte();
	 if(flag==1||flag==2)
	 {
	 objfs.Read(buff,0,3);
	 if(flag==2)
	 {
	 this.countryFlag=2;
	 this.endIpOff=offSet-4;
	 }
	 offSet=Convert.ToInt64(buff[0].ToString())+Convert.ToInt64(buff[1].ToString())*256+Convert.ToInt64(buff[2].ToString())*256*256;
	 }
	 else
	 {
	 break;
	 }
	 }
	 if(offSet<12)
	 return " ";
	 objfs.Position=offSet;
	 return GetStr();
	 }
	 #endregion

	 #region GetStr
	 private string GetStr()
	 {
	 byte lowC=0;
	 byte upC=0;
	 string str="";
	 byte[] buff = new byte[2];
	 while(1==1)
	 {
	 lowC= (Byte)objfs.ReadByte();
	 if(lowC==0)
	 break;
	 if(lowC>127)
	 {
	 upC=(byte)objfs.ReadByte();
	 buff[0]=lowC;
	 buff[1]=upC;
	 System.Text.Encoding enc = System.Text.Encoding.GetEncoding("GB2312");
	 str+=enc.GetString(buff);
	 }
	 else
	 {
	 str+=(char)lowC;
	 }
	 }
	 return str;
	 }
	 #endregion

	 #region 获取IP地址
	 public string IPLocation()
	 {
	 this.QQwry();
	 return this.country+this.local;
	 }
	 public string IPCountry()
	 {
	 this.QQwry();
	 return this.country;
	 }
	 public string IPLocation(string dataPath,string ip)
	 {
	 this.dataPath=dataPath;
	 this.ip=ip;
	 this.QQwry();
	 return this.country+this.local;
	 }
	 #endregion

	
	}
	}

	
	下面是调用方法,数据文件是e:\ip\coralway.dat，如果没有这个文件则查找网站根目录的coralway.dat,也可以使用纯真数据库文件，修改文件名即可。
	 public static string SearchIP(string textip)
	 {
	 IPScaner objScan = new IPScaner();
	 string ip=textip.Trim();
	 string file = @"E:\IP\CoralWry.dat";
	 if (!System.IO.File.Exists(file))
	 {
	 if (HttpContext.Current != null)
	 {
	 file = HttpContext.Current.Server.MapPath("~/CoralWry.dat");
	 if (!System.IO.File.Exists(file))
	 return "没有数据文件"+file;
	 }
	 }
	 objScan.DataPath = file;
	 objScan.IP=ip;
	 return (objScan.IPCountry() +objScan.ErrMsg);
	 }
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