using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;namespace AIMSCommon
{/// <summary>  /// 根据IP地址查询所在地/// </summary>  public class IPScanerHelper{#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 IPScanerHelper(){//  // 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;elserangE = 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IPprivate 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IPprivate 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 GetStrprivate 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}
}