IP定位 C#

IP定位已经不是什么新的技术，但是在做项目中却会常常用到。找网上找了许久，也做了许多的实验，觉得QQwry.dat，很很好用的，作者也提供了开发的源码和大家分享。在这里感谢作者。我在项目中也用到了ip定位，写了代码，希望能给没有用过的朋友有所帮助。QQ 纯真IP 数据库下载地址QQWry.dat

直接上代码：

IPScanner.cs

public class IPScanner
{

private byte[] data;
Regex regex = new Regex(@"(((\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]))");
long firstStartIpOffset;
long lastStartIpOffset;
long ipCount;
public long Count { get { return ipCount; } }
public IPScanner(string dataPath)
{
using (FileStream fs = new FileStream(dataPath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
data = new byte[fs.Length];
fs.Read(data, 0, data.Length);
}
byte[] buffer = new byte[8];
Array.Copy(data, 0, buffer, 0, 8);
firstStartIpOffset = ((buffer[0] + (buffer[1] * 0x100)) + ((buffer[2] * 0x100) * 0x100)) + (((buffer[3] * 0x100) * 0x100) * 0x100);
lastStartIpOffset = ((buffer[4] + (buffer[5] * 0x100)) + ((buffer[6] * 0x100) * 0x100)) + (((buffer[7] * 0x100) * 0x100) * 0x100);
ipCount = Convert.ToInt64((double)(((double)(lastStartIpOffset - firstStartIpOffset)) / 7.0));

if (ipCount <= 1L)
{
throw new ArgumentException("ip FileDataError");
}
}
private static long IpToInt(string ip)
{
char[] separator = new char[] { '.' };
if (ip.Split(separator).Length == 3)
{
ip = ip + ".0";
}
string[] strArray = ip.Split(separator);
long num2 = ((long.Parse(strArray[0]) * 0x100L) * 0x100L) * 0x100L;
long num3 = (long.Parse(strArray[1]) * 0x100L) * 0x100L;
long num4 = long.Parse(strArray[2]) * 0x100L;
long num5 = long.Parse(strArray[3]);
return (((num2 + num3) + num4) + num5);
}
private static string IntToIP(long ip_Int)
{
long num = (long)((ip_Int & 0xff000000L) >> 0x18);
if (num < 0L)
{
num += 0x100L;
}
long num2 = (ip_Int & 0xff0000L) >> 0x10;
if (num2 < 0L)
{
num2 += 0x100L;
}
long num3 = (ip_Int & 0xff00L) >> 8;
if (num3 < 0L)
{
num3 += 0x100L;
}
long num4 = ip_Int & 0xffL;
if (num4 < 0L)
{
num4 += 0x100L;
}
return (num.ToString() + "." + num2.ToString() + "." + num3.ToString() + "." + num4.ToString());
}
public IPLocation Query(string ip)
{
if (!regex.Match(ip).Success)
{
ip = "300.300.300.300";
}
IPLocation ipLocation = new IPLocation() { IP = ip };
long intIP = IpToInt(ip);
if ((intIP >= IpToInt("127.0.0.1") && (intIP <= IpToInt("127.255.255.255"))))
{
ipLocation.Country = "本机内部环回地址";
ipLocation.Local = "";
}
else
{
if ((((intIP >= IpToInt("0.0.0.0")) && (intIP <= IpToInt("2.255.255.255"))) || ((intIP >= IpToInt("64.0.0.0")) && (intIP <= IpToInt("126.255.255.255")))) ||
((intIP >= IpToInt("58.0.0.0")) && (intIP <= IpToInt("60.255.255.255"))))
{
ipLocation.Country = "网络保留地址";
ipLocation.Local = "";
}
}
long right = ipCount;
long left = 0L;
long middle = 0L;
long startIp = 0L;
long endIpOff = 0L;
long endIp = 0L;
int countryFlag = 0;
while (left < (right - 1L))
{
middle = (right + left) / 2L;
startIp = GetStartIp(middle, out endIpOff);
if (intIP == startIp)
{
left = middle;
break;
}
if (intIP > startIp)
{
left = middle;
}
else
{
right = middle;
}
}
startIp = GetStartIp(left, out endIpOff);
endIp = GetEndIp(endIpOff, out countryFlag);
if ((startIp <= intIP) && (endIp >= intIP))
{
string local;
ipLocation.Country = GetCountry(endIpOff, countryFlag, out local);
ipLocation.Local = local;
}
else
{
ipLocation.Country = "未知的IP地址";
ipLocation.Local = "";
}
return ipLocation;
}
private long GetStartIp(long left, out long endIpOff)
{
long leftOffset = firstStartIpOffset + (left * 7L);
byte[] buffer = new byte[7];
Array.Copy(data, leftOffset, buffer, 0, 7);
endIpOff = (Convert.ToInt64(buffer[4].ToString()) + (Convert.ToInt64(buffer[5].ToString()) * 0x100L)) + ((Convert.ToInt64(buffer[6].ToString()) * 0x100L) * 0x100L);
return ((Convert.ToInt64(buffer[0].ToString()) + (Convert.ToInt64(buffer[1].ToString()) * 0x100L)) + ((Convert.ToInt64(buffer[2].ToString()) * 0x100L) * 0x100L)) + (((Convert.ToInt64(buffer[3].ToString()) * 0x100L) * 0x100L) * 0x100L);
}
private long GetEndIp(long endIpOff, out int countryFlag)
{
byte[] buffer = new byte[5];
Array.Copy(data, endIpOff, buffer, 0, 5);
countryFlag = buffer[4];
return ((Convert.ToInt64(buffer[0].ToString()) + (Convert.ToInt64(buffer[1].ToString()) * 0x100L)) + ((Convert.ToInt64(buffer[2].ToString()) * 0x100L) * 0x100L)) + (((Convert.ToInt64(buffer[3].ToString()) * 0x100L) * 0x100L) * 0x100L);
}
/// <summary>
/// Gets the country.
/// </summary>
/// <param name="endIpOff">The end ip off.</param>
/// <param name="countryFlag">The country flag.</param>
/// <param name="local">The local.</param>
/// <returns>country</returns>
private string GetCountry(long endIpOff, int countryFlag, out string local)
{
string country = "";
long offset = endIpOff + 4L;
switch (countryFlag)
{
case 1:
case 2:
country = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);
offset = endIpOff + 8L;
local = (1 == countryFlag) ? "" : GetFlagStr(ref offset, ref countryFlag, ref endIpOff);
break;
default:
country = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);
local = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);
break;
}
return country;
}
private string GetFlagStr(ref long offset, ref int countryFlag, ref long endIpOff)
{
int flag = 0;
byte[] buffer = new byte[3];

while (true)
{
//用于向前累加偏移量
long forwardOffset = offset;
flag = data[forwardOffset++];
//没有重定向
if (flag != 1 && flag != 2)
{
break;
}
Array.Copy(data, forwardOffset, buffer, 0, 3);
forwardOffset += 3;
if (flag == 2)
{
countryFlag = 2;
endIpOff = offset - 4L;
}
offset = (Convert.ToInt64(buffer[0].ToString()) + (Convert.ToInt64(buffer[1].ToString()) * 0x100L)) + ((Convert.ToInt64(buffer[2].ToString()) * 0x100L) * 0x100L);
}
if (offset < 12L)
{
return "";
}
return GetStr(ref offset);
}
private string GetStr(ref long offset)
{
byte lowByte = 0;
byte highByte = 0;
StringBuilder stringBuilder = new StringBuilder();
byte[] bytes = new byte[2];
Encoding encoding = Encoding.GetEncoding("GB2312");
while (true)
{
lowByte = data[offset++];
if (lowByte == 0)
{
return stringBuilder.ToString();
}
if (lowByte > 0x7f)
{
highByte = data[offset++];
bytes[0] = lowByte;
bytes[1] = highByte;
if (highByte == 0)
{
return stringBuilder.ToString();
}
stringBuilder.Append(encoding.GetString(bytes));
}
else
{
stringBuilder.Append((char)lowByte);
}
}
}
}

public class IPScanner

    {

        private byte[] data;

        Regex regex = new Regex(@"(((\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]))");

        long firstStartIpOffset;

        long lastStartIpOffset;

        long ipCount;

        public long Count { get { return ipCount; } }

        public IPScanner(string dataPath)

        {

            using (FileStream fs = new FileStream(dataPath, FileMode.Open, FileAccess.Read, FileShare.Read))

            {

                data = new byte[fs.Length];

                fs.Read(data, 0, data.Length);

            }

            byte[] buffer = new byte[8];

            Array.Copy(data, 0, buffer, 0, 8);

            firstStartIpOffset = ((buffer[0] + (buffer[1] * 0x100)) + ((buffer[2] * 0x100) * 0x100)) + (((buffer[3] * 0x100) * 0x100) * 0x100);

            lastStartIpOffset = ((buffer[4] + (buffer[5] * 0x100)) + ((buffer[6] * 0x100) * 0x100)) + (((buffer[7] * 0x100) * 0x100) * 0x100);

            ipCount = Convert.ToInt64((double)(((double)(lastStartIpOffset - firstStartIpOffset)) / 7.0));

            if (ipCount <= 1L)

            {

                throw new ArgumentException("ip FileDataError");

            }

        }

        private static long IpToInt(string ip)

        {

            char[] separator = new char[] { '.' };

            if (ip.Split(separator).Length == 3)

            {

                ip = ip + ".0";

            }

            string[] strArray = ip.Split(separator);

            long num2 = ((long.Parse(strArray[0]) * 0x100L) * 0x100L) * 0x100L;

            long num3 = (long.Parse(strArray[1]) * 0x100L) * 0x100L;

            long num4 = long.Parse(strArray[2]) * 0x100L;

            long num5 = long.Parse(strArray[3]);

            return (((num2 + num3) + num4) + num5);

        }

        private static string IntToIP(long ip_Int)

        {

            long num = (long)((ip_Int & 0xff000000L) >> 0x18);

            if (num < 0L)

            {

                num += 0x100L;

            }

            long num2 = (ip_Int & 0xff0000L) >> 0x10;

            if (num2 < 0L)

            {

                num2 += 0x100L;

            }

            long num3 = (ip_Int & 0xff00L) >> 8;

            if (num3 < 0L)

            {

                num3 += 0x100L;

            }

            long num4 = ip_Int & 0xffL;

            if (num4 < 0L)

            {

                num4 += 0x100L;

            }

            return (num.ToString() + "." + num2.ToString() + "." + num3.ToString() + "." + num4.ToString());

        }

        public IPLocation Query(string ip)

        {

            if (!regex.Match(ip).Success)

            {

                ip = "300.300.300.300";

            }

            IPLocation ipLocation = new IPLocation() { IP = ip };

            long intIP = IpToInt(ip);

            if ((intIP >= IpToInt("127.0.0.1") && (intIP <= IpToInt("127.255.255.255"))))

            {

                ipLocation.Country = "本机内部环回地址";

                ipLocation.Local = "";

            }

            else

            {

                if ((((intIP >= IpToInt("0.0.0.0")) && (intIP <= IpToInt("2.255.255.255"))) || ((intIP >= IpToInt("64.0.0.0")) && (intIP <= IpToInt("126.255.255.255")))) ||

                ((intIP >= IpToInt("58.0.0.0")) && (intIP <= IpToInt("60.255.255.255"))))

                {

                    ipLocation.Country = "网络保留地址";

                    ipLocation.Local = "";

                }

            }

            long right = ipCount;

            long left = 0L;

            long middle = 0L;

            long startIp = 0L;

            long endIpOff = 0L;

            long endIp = 0L;

            int countryFlag = 0;

            while (left < (right - 1L))

            {

                middle = (right + left) / 2L;

                startIp = GetStartIp(middle, out endIpOff);

                if (intIP == startIp)

                {

                    left = middle;

                    break;

                }

                if (intIP > startIp)

                {

                    left = middle;

                }

                else

                {

                    right = middle;

                }

            }

            startIp = GetStartIp(left, out endIpOff);

            endIp = GetEndIp(endIpOff, out countryFlag);

            if ((startIp <= intIP) && (endIp >= intIP))

            {

                string local;

                ipLocation.Country = GetCountry(endIpOff, countryFlag, out local);

                ipLocation.Local = local;

            }

            else

            {

                ipLocation.Country = "未知的IP地址";

                ipLocation.Local = "";

            }

            return ipLocation;

        }

        private long GetStartIp(long left, out long endIpOff)

        {

            long leftOffset = firstStartIpOffset + (left * 7L);

            byte[] buffer = new byte[7];

            Array.Copy(data, leftOffset, buffer, 0, 7);

            endIpOff = (Convert.ToInt64(buffer[4].ToString()) + (Convert.ToInt64(buffer[5].ToString()) * 0x100L)) + ((Convert.ToInt64(buffer[6].ToString()) * 0x100L) * 0x100L);

            return ((Convert.ToInt64(buffer[0].ToString()) + (Convert.ToInt64(buffer[1].ToString()) * 0x100L)) + ((Convert.ToInt64(buffer[2].ToString()) * 0x100L) * 0x100L)) + (((Convert.ToInt64(buffer[3].ToString()) * 0x100L) * 0x100L) * 0x100L);

        }

        private long GetEndIp(long endIpOff, out int countryFlag)

        {

            byte[] buffer = new byte[5];

            Array.Copy(data, endIpOff, buffer, 0, 5);

            countryFlag = buffer[4];

            return ((Convert.ToInt64(buffer[0].ToString()) + (Convert.ToInt64(buffer[1].ToString()) * 0x100L)) + ((Convert.ToInt64(buffer[2].ToString()) * 0x100L) * 0x100L)) + (((Convert.ToInt64(buffer[3].ToString()) * 0x100L) * 0x100L) * 0x100L);

        }

        /// <summary>

        /// Gets the country.

        /// </summary>

        /// <param name="endIpOff">The end ip off.</param>

        /// <param name="countryFlag">The country flag.</param>

        /// <param name="local">The local.</param>

        /// <returns>country</returns>

        private string GetCountry(long endIpOff, int countryFlag, out string local)

        {

            string country = "";

            long offset = endIpOff + 4L;

            switch (countryFlag)

            {

                case 1:

                case 2:

                    country = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);

                    offset = endIpOff + 8L;

                    local = (1 == countryFlag) ? "" : GetFlagStr(ref offset, ref countryFlag, ref endIpOff);

                    break;

                default:

                    country = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);

                    local = GetFlagStr(ref offset, ref countryFlag, ref endIpOff);

                    break;

            }

            return country;

        }

        private string GetFlagStr(ref long offset, ref int countryFlag, ref long endIpOff)

        {

            int flag = 0;

            byte[] buffer = new byte[3];

            while (true)

            {

                //用于向前累加偏移量

                long forwardOffset = offset;

                flag = data[forwardOffset++];

                //没有重定向

                if (flag != 1 && flag != 2)

                {

                    break;

                }

                Array.Copy(data, forwardOffset, buffer, 0, 3);

                forwardOffset += 3;

                if (flag == 2)

                {

                    countryFlag = 2;

                    endIpOff = offset - 4L;

                }

                offset = (Convert.ToInt64(buffer[0].ToString()) + (Convert.ToInt64(buffer[1].ToString()) * 0x100L)) + ((Convert.ToInt64(buffer[2].ToString()) * 0x100L) * 0x100L);

            }

            if (offset < 12L)

            {

                return "";

            }

            return GetStr(ref offset);

        }

        private string GetStr(ref long offset)

        {

            byte lowByte = 0;

            byte highByte = 0;

            StringBuilder stringBuilder = new StringBuilder();

            byte[] bytes = new byte[2];

            Encoding encoding = Encoding.GetEncoding("GB2312");

            while (true)

            {

                lowByte = data[offset++];

                if (lowByte == 0)

                {

                    return stringBuilder.ToString();

                }

                if (lowByte > 0x7f)

                {

                    highByte = data[offset++];

                    bytes[0] = lowByte;

                    bytes[1] = highByte;

                    if (highByte == 0)

                    {

                        return stringBuilder.ToString();

                    }

                    stringBuilder.Append(encoding.GetString(bytes));

                }

                else

                {

                    stringBuilder.Append((char)lowByte);

                }

            }

        }

    }

IPLocation.cs

 public class IPLocation

    {

        public string IP { get; set; }

        public string Country { get; set; }

        public string Local { get; set; }

    }

 public class IPLocation

    {

        public string IP { get; set; }

        public string Country { get; set; }

        public string Local { get; set; }

    }

使用：

IPScanner qqWry = new IPScanner(Server.MapPath("~/Common/QQWry.dat"));

IPLocation ip = qqWry.Query("真实ip地址");

就这么简单。

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