前几天有一个朋友说一直想有一个这样程序，可以把网络上比较流行的QQwry.Dat作为IP数据源来实现IP地址的查询显示。可是网络上一直没有出现.Net的版本。
我想既然如此，那我就抽空写一写好了，先到Google上Go了一下，找到相关介绍文章，了解了其格式，然后又参考了其它语言版本的程序，一天多一点时间，终于把这个东西写好了。不敢独享，帖出来 /**//******************************************************************
** File Name:IPScaner.cs
** Copyright (c) 2004-2005 PPTech Studio(PPTech.Net)
** Creater:Rexsp(MSN:yubo@x263.net)
** Create Date:2004-12-27 20:10:28
** Modifier:
** Modify Date:
** Description:to scan the ip location from qqwry.dat
** Version: IPScaner 1.0.0
******************************************************************/
using System;
using System.IO;
using System.Collections;
using System.Text;
using System.Text.RegularExpressions;
namespace PPTech.WebSite.BusinessRules
{
/**//// <summary>
/// to scan the ip location from qqwry.dat
/// </summary>
public class IPScaner
{
私有成员#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
构造函数#region 构造函数
public IPScaner()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
#endregion
公共属性#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
搜索匹配数据#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;
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
{
nRet=3;
this.country="未知";
this.local="";
}
objfs.Close();
return nRet;
}
catch
{
return 1;
}
}
#endregion
IP地址转换成Int数据#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
int转换成IP#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();
return ip;
}
#endregion
获取起始IP范围#region 获取起始IP范围
private lon
