protected void Button_Query_Click(object sender, EventArgs e)
{
EZGoal.CZIPDB db = new EZGoal.CZIPDB(Server.MapPath("~/App_Data/qqwry.dat"));
EZGoal.IPRecord data = db.Query(TextBox_IP.Text.Trim());
Label_Result.Text = string.Format("{0} {1} {2}", data.IP, data.Location1, data.Location2);
}
public IPRecord Query(string ip)
{
if (!regex.IsMatch(ip))
{
throw new ArgumentException("IP Address Format Error");
}
IPRecord ipLocation = new IPRecord()
{
IP = ip
};
UInt32 ipInt = IpStrToInt(ip);
if ((ipInt >> 22) == 0x191)
{
//100.64.0.0 - 100.127.255.255
ipLocation.Location1 = "Carrier-Grade NAT";
ipLocation.Location2 = "";
}
else if ((ipInt >> 24) == 0x7F)
{
//127.0.0.0 - 127.255.255.255
ipLocation.Location1 = "Loopback Network";
ipLocation.Location2 = "";
}
else if ((ipInt >> 24) == 0x0A || (ipInt >> 20) == 0xAC1 || (ipInt >> 16) == 0xC0A8)
{
//10.0.0.0 - 10.255.255.255, 172.16.0.0 - 172.31.255.255, 192.168.0.0 - 192.168.255.255
ipLocation.Location1 = "Local Area Network";
ipLocation.Location2 = "";
}
else
{
uint lowerIndex = 0;
uint upperIndex = ipCount;
uint middle = 0;
uint lowerIp = 0;
uint upperIp = 0;
uint upperIpOffset = 0;
byte flag = 0;
while (lowerIndex < (upperIndex - 1))
{
middle = (upperIndex + lowerIndex) >> 1;
lowerIp = GetLowerIp(middle, out upperIpOffset);
if (ipInt == lowerIp)
{
lowerIndex = middle;
break;
}
if (ipInt > lowerIp)
{
lowerIndex = middle;
}
else
{
upperIndex = middle;
}
}
lowerIp = GetLowerIp(lowerIndex, out upperIpOffset);
upperIp = GetUpperIp(upperIpOffset, out flag);
if ((lowerIp <= ipInt) && (upperIp >= ipInt))
{
string local;
ipLocation.Location1 = GetLocation(upperIpOffset, flag, out local);
ipLocation.Location2 = local;
}
else
{
ipLocation.Location1 = "Unknown";
ipLocation.Location2 = "";
}
}
return(ipLocation);
}