获取远程IP 得到省市代码,Asp.Net代码库,德仔网

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【Asp.Net】获取远程IP 得到省市
作者:Dezai.CN / 发布于2013/6/13/ 627

	using System;
	using System.IO;
	using System.Collections;
	using System.Text;
	using System.Text.RegularExpressions;
	public class IPScanner
	{
	 #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 IPScanner()
	 {
	 //
	 // 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 = long.Parse(ipArr[0]) * 256 * 256 * 256;
	 long p2 = long.Parse(ipArr[1]) * 256 * 256;
	 long p3 = long.Parse(ipArr[2]) * 256;
	 long p4 = long.Parse(ipArr[3]);
	 ip_Int = p1 + p2 + p3 + p4;
	 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 IPLocation(string dataPath, string ip)
	 {
	 this.dataPath = dataPath;
	 this.ip = ip;
	 this.QQwry();
	 return this.country + this.local;
	 }
	 #endregion }

	

	调用方法：
	string ip = Request.ServerVariables.Get("REMOTE_ADDR");//自动获取用户IP
	IPScanner objScan = new IPScanner();
	objScan.DataPath = Server.MapPath("~/qqwry.dat");
	objScan.IP = ip;
	string addre = objScan.IPLocation();
	string err = objScan.ErrMsg;
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