asp.net 纯真ip库取得所在地实现代码
2024-07-10 12:38:55
供稿：网友
有关纯真IP库的相关知识：查看( pdf格式)
纯真IP库官方下载地址：http://www.cz88.net/
使用的类（已经经过调试.net 2.0，已对错误做了修改）：
代码如下:
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;
namespace QQWry.NET
{
public class IPLocation
{
private string _IP;
private string _Country;
private string _Local;
public string IP
{ get{return _IP;}
set{_IP = value;}
}
public string Country
{ get{return _Country;}
set{_Country = value;}
}
public string Local
{ get{return _Local;}
set{_Local = value;}
}
}
public class QQWryLocator
{
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 QQWryLocator(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)
{
throw new ArgumentException("IP格式错误");
}
IPLocation ipLocation = new IPLocation();
ipLocation.IP = ip;
