这里我有一个静态参考我需要检查的范围:
private static List<string> Ip_Range = new List<string>()
{
"12.144.86.0/23",
"31.201.1.176/30",
"46.36.198.101/32",
"46.36.198.102/31",
"46.36.198.104/31",
"46.136.172.0/24",
"63.65.11.0/24",
"63.65.12.0/25",
"63.65.12.128/26",
"63.65.12.192/27",
"63.65.12.224/28",
"63.65.12.240/29",
"63.65.12.248/30",
"63.65.12.252/31",
"63.65.12.254/32",
"65.173.56.0/21",
"67.23.241.179/32",
"67.23.241.180/30",
"67.23.241.184/29",
"67.23.241.192/30",
"67.23.241.196/31",
"67.23.241.198/32",
"72.32.164.56/29",
"72.46.244.32/28",
"74.91.16.48/29",
"74.91.16.208/29",
"74.91.20.48/28",
"74.91.20.64/29",
"74.112.134.120/29",
"74.112.135.104/29",
"74.205.37.16/29",
"78.24.205.32/28",
"98.129.27.88/29",
"98.129.91.40/29",
"166.114.0.0/16",
"167.157.0.0/16",
"174.143.165.80/29",
"186.0.156.0/22",
"186.2.0.0/17",
"186.27.0.0/17",
"190.0.248.0/21",
"190.3.184.0/21"
};
这是我看到它如何工作的一些伪代码:
public static bool IpIsWithinRange(string ip) //Something like 127.0.0.1 or 184.56.26.35
{
IPAddress incomingIp = IPAddress.Parse(ip);
foreach (var subnet in Ip_Range)
{
IPAddress sub = IPAddress.Parse(subnet); ?????
if (incomingIp "is in" sub) ?
return true;
}
return false;
}
有关如何编写此功能的任何建议？
小智 30
如果您不希望/无法将另一个库(作为IPnetwork)添加到您的项目中,只需要处理IPv4 CIDR范围,这里可以快速解决您的问题
// true if ipAddress falls inside the CIDR range, example
// bool result = IsInRange("10.50.30.7", "10.0.0.0/8");
private bool IsInRange(string ipAddress, string CIDRmask)
{
string[] parts = CIDRmask.Split('/');
int IP_addr = BitConverter.ToInt32(IPAddress.Parse(parts[0]).GetAddressBytes(), 0);
int CIDR_addr = BitConverter.ToInt32(IPAddress.Parse(ipAddress).GetAddressBytes(), 0);
int CIDR_mask = IPAddress.HostToNetworkOrder(-1 << (32 - int.Parse(parts[1])));
return ((IP_addr & CIDR_mask) == (CIDR_addr & CIDR_mask));
}
以上将允许您快速检查给定的IPv4地址是否属于给定的CIDR范围; 注意上面的代码是准系统的,你可以在将它们提供给函数之前检查给定的IP(字符串)和CIDR范围是否正确(你可以使用tryparse或其他......)
Onl*_*ere 17
决定回答我自己的问题,这样人们就可以受益.如果可以改进,请做!
我使用了IPNetwork库并且它非常出色!以下是我使用的代码:
using System.Net;
public static class RedirectHelpers
{
public static bool IpIsWithinBoliviaRange(string ip)
{
IPAddress incomingIp = IPAddress.Parse(ip);
foreach (var subnet in Bolivia_Ip_Range)
{
IPNetwork network = IPNetwork.Parse(subnet);
if (IPNetwork.Contains(network, incomingIp))
return true;
}
return false;
}
private static List<string> Bolivia_Ip_Range = new List<string>()
{
"12.144.86.0/23",
"31.201.1.176/30",
"46.36.198.101/32",
"46.36.198.102/31",
"46.36.198.104/31",
"46.136.172.0/24",
"63.65.11.0/24",
"63.65.12.0/25",
"63.65.12.128/26",
"63.65.12.192/27",
"63.65.12.224/28",
"63.65.12.240/29",
"63.65.12.248/30",
"63.65.12.252/31",
"63.65.12.254/32",
"65.173.56.0/21",
"67.23.241.179/32",
"67.23.241.180/30",
"67.23.241.184/29",
"67.23.241.192/30",
"67.23.241.196/31",
"67.23.241.198/32",
"72.32.164.56/29",
"72.46.244.32/28",
"74.91.16.48/29",
"74.91.16.208/29",
"74.91.20.48/28",
"74.91.20.64/29",
"74.112.134.120/29",
"74.112.135.104/29",
"74.205.37.16/29",
"78.24.205.32/28",
"98.129.27.88/29",
"98.129.91.40/29",
"166.114.0.0/16",
"167.157.0.0/16",
"174.143.165.80/29",
"186.0.156.0/22",
"186.2.0.0/17",
"186.27.0.0/17",
"190.0.248.0/21",
"190.3.184.0/21",
"166.114.0.0/16",
"167.157.0.0/16",
"186.2.0.0/18",
"190.11.64.0/20",
"190.11.80.0/20",
"190.103.64.0/20",
"190.104.0.0/19",
"190.107.32.0/20",
"190.129.0.0/17",
"190.181.0.0/18",
"190.186.0.0/18",
"190.186.64.0/18",
"190.186.128.0/18",
"200.7.160.0/20",
"200.58.64.0/20",
"200.58.80.0/20",
"200.58.160.0/20",
"200.58.176.0/20",
"200.75.160.0/20",
"200.85.128.0/20",
"200.87.0.0/17",
"200.87.128.0/17",
"200.105.128.0/19",
"200.105.160.0/19",
"200.105.192.0/19",
"200.112.192.0/20",
"200.119.192.0/20",
"200.119.208.0/20",
"201.222.64.0/19",
"201.222.96.0/19"
};
}
M.B*_*ock 10
幸运的是,大部分工作已经完成(所以我们没有).查看IPNetwork项目.您将使用解析所有CIDR地址IPNetwork.Parse.然后看看特定IPAddress是否在范围内只是使用IPNetwork.Contains方法.
我觉得无聊,所以这里有一个方法可以用来测试IP地址是否在范围内:
private Dictionary<string, IPNetwork> netCache = null;
public bool IsInRange(string ipAddress)
{
if (netCache == null)
netCache = Ip_Range.ToDictionary((keyItem) => keyItem, (valueItem) => IPNetwork.Parse(valueItem));
return netCache.Values.Any(net => IPNetwork.Contains(net, IPAddress.Parse(ipAddress)));
}
这取决于Ip_Range您问题中的列表,但会将它们转换为IPNetwork实例(为简洁起见,缺少完整性检查).
用法:
List<string> addrList = new List<string> { "12.144.86.1", "10.254.6.172" };
addrList.ForEach(addr => Console.WriteLine("{0}: {1}", addr, IsInRange(addr)));
测试输出:
12.144.86.1: True
10.254.6.172: False
当然,仍有很多可以(也可能应该)完成它,但这证明了这个概念.