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【CSharp】 IPScanner
作者:Dezai.CN / 发布于2012/8/13/ 494
IPScanner
<div>using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Collections;
using System.Text;
using System.Text.RegularExpressions;</div>
<div>namespace Pub.Class
{
 /// <summary>
 /// IPScanner 的摘要说明
 /// </summary>
 public class IPScanner
 {
 #region 私有成员
 private string dataPath;
 private string ip;
 private string country;
 private string local;
 private int _state = 0;
 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</div>
<div> #region 构造函数
 public IPScanner() {
 //
 // TODO: 在此处添加构造函数逻辑
 //
 }
 #endregion</div>
<div> #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; }
 }
 public int State {
 get { return _state; }
 }
 #endregion</div>
<div> #region 搜索匹配数据
 /// <summary>
 /// 搜索匹配数据
 /// </summary>
 /// <returns></returns>
 private void 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) {
 _state = 1;//IP地址格式错误
 return;
 }
<div> long ip_Int = this.IpToInt(ip);
 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 = "";
 } 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 = "";
 }
 objfs = new FileStream(this.dataPath, FileMode.Open, FileAccess.Read);
 try {
 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";
 _state = 2;//FileDataError
 objfs.Close();
 return;
 }
 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 {
 this.country = "未知";
 this.local = "";
 }
 objfs.Close();
 _state = 0;
 } catch {
 _state = 3;//未知错误
 }
 }
 #endregion</div>
<div> #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);</div>
<div> 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</div>
<div> #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();</div>
<div> return ip;
 }
 #endregion</div>
<div> #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);</div>
<div> 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</div>
<div> #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</div>
<div> #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</div>
<div> #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</div>
<div> #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</div>
<div> #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
 }
}
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