////// 利用纯真IP数据库(QQWry.dat)查询IP所在地 /// 优点：查询速度快、方便更新IP库 /// public static class IPScanner { private static string dataPath = HttpContext.Current.Server.MapPath("/Plugin/qqwry.dat"); private static string ip; private static string country; private static string local; private static long firststartIP = 0; private static long laststartIP = 0; private static FileStream objfs = null; private static long startIP = 0; private static long endIP = 0; private static int countryFlag = 0; private static long endIPOff = 0; //private static string errMsg = null; #region 搜索匹配数据 private static int QQwry() { long ip_Int = IPToInt(ip); int nRet = 0; if (ip_Int >= IPToInt("127.0.0.0") && ip_Int <= IPToInt("127.255.255.255")) { country = "本机内部环回地址"; 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"))) { country = "网络保留地址"; local = ""; nRet = 1; } objfs = new FileStream(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; GetstartIP(recNO); if (ip_Int == startIP) { rangB = recNO; break; } if (ip_Int > startIP) rangB = recNO; else rangE = recNO; } GetstartIP(rangB); GetendIP(); if (startIP <= ip_Int && endIP >= ip_Int) { GetCountry(); local = local.Replace("（我们一定要解放台湾！！！）", ""); } else { nRet = 3; country = "未知"; local = ""; } objfs.Close(); return nRet; } catch { return 1; } } #endregion #region 检验IP是否合法 ////// 检验IP是否合法 /// /// 需要检验的IP ///True 合法/False 非法 public static bool CheckIP(string checkIP) { 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 + "IP"); Match objMa = objRe.Match(checkIP + "IP"); if (objMa.Success) { return true; } else { return false; } } #endregion #region IP字符串转换成Int数据 ////// 将IP字符串转换成Int数据 /// /// IP字符串 ///Int数据 public static 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数据转换成IP字符串 ////// 将Int数据转换成IP字符串 /// /// ///public static 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 static 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 static long GetendIP() { //objfs.Seek(endIPOff,SeekOrigin.Begin); objfs.Position = endIPOff; byte[] buff = new Byte[5]; objfs.Read(buff, 0, 5); 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; countryFlag = buff[4]; return endIP; } #endregion #region 获取国家/区域偏移量 private static string GetCountry() { switch (countryFlag) { case 1: case 2: country = GetFlagStr(endIPOff + 4); local = (1 == countryFlag) ? " " : GetFlagStr(endIPOff + 8); break; default: country = GetFlagStr(endIPOff + 4); local = GetFlagStr(objfs.Position); break; } return " "; } #endregion #region 获取国家/区域字符串 private static 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) { countryFlag = 2; 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 static 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 /// /// 根据IP查询所在地 /// /// 查询IP ///所在地 public static string IPLocation(string scanIP) { if (CheckIP(scanIP) == true) { ip = scanIP; QQwry(); country = country.Trim().Replace("CZ88.NET", ""); local = local.Trim().Replace("CZ88.NET", ""); string location = country + " " + local; return location.Trim(); } else { return "非法的IP地址"; } } #endregion }