C#:枚举范围内的IP地址
如何遍历用户提供的一系列IP地址 我在格式上很灵活,只要它允许指定所有范围。可能类似于nmap样式:C#:枚举范围内的IP地址,c#,C#,如何遍历用户提供的一系列IP地址 我在格式上很灵活,只要它允许指定所有范围。可能类似于nmap样式: '192.0.2.1' # one IP address '192.0.2.0-31' # one block with 32 IP addresses. '192.0.2-3.1-254' # two blocks with 254 IP addresses. '0-255.0-255.0-255.
'192.0.2.1' # one IP address
'192.0.2.0-31' # one block with 32 IP addresses.
'192.0.2-3.1-254' # two blocks with 254 IP addresses.
'0-255.0-255.0-255.0-255' # the whole IPv4 address space
例如,如果用户输入了192.0.2-3.1-254
,我想知道如何生成此范围内所有有效IP地址的列表,以便我可以遍历它们。查看代码段。如果您使用此功能,请保留信用卡
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Net;
/* ====================================================================================
C# IP address range finder helper class (C) Nahum Bazes
* Free for private & commercial use - no restriction applied, please leave credits.
* DO NOT REMOVE THIS COMMENT
* ==================================================================================== */
namespace IPAddressTools
{
public class RangeFinder
{
public IEnumerable<string> GetIPRange(IPAddress startIP,
IPAddress endIP)
{
uint sIP = ipToUint(startIP.GetAddressBytes());
uint eIP = ipToUint(endIP.GetAddressBytes());
while (sIP <= eIP)
{
yield return new IPAddress(reverseBytesArray(sIP)).ToString();
sIP++;
}
}
/* reverse byte order in array */
protected uint reverseBytesArray(uint ip)
{
byte[] bytes = BitConverter.GetBytes(ip);
bytes = bytes.Reverse().ToArray();
return (uint)BitConverter.ToInt32(bytes, 0);
}
/* Convert bytes array to 32 bit long value */
protected uint ipToUint(byte[] ipBytes)
{
ByteConverter bConvert = new ByteConverter();
uint ipUint = 0;
int shift = 24; // indicates number of bits left for shifting
foreach (byte b in ipBytes)
{
if (ipUint == 0)
{
ipUint = (uint)bConvert.ConvertTo(b, typeof(uint)) << shift;
shift -= 8;
continue;
}
if (shift >= 8)
ipUint += (uint)bConvert.ConvertTo(b, typeof(uint)) << shift;
else
ipUint += (uint)bConvert.ConvertTo(b, typeof(uint));
shift -= 8;
}
return ipUint;
}
}
}
使用系统;
使用System.Collections.Generic;
使用系统组件模型;
使用System.Linq;
Net系统;
/* ====================================================================================
C#IP地址测距辅助类(C)Nahum Bazes
*免费供私人和商业使用-不受限制,请留下学分。
*不要删除此评论
* ==================================================================================== */
命名空间IPAddressTools
{
公共级测距仪
{
公共IEnumerable GetIPRange(IPAddress startIP,
IP地址(endIP)
{
uint sIP=ipToUint(startIP.GetAddressBytes());
uint eIP=ipToUint(endIP.GetAddressBytes());
而(sIP例如:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Text.RegularExpressions;
namespace IpRanges
{
public class IPRange
{
public IPRange(string ipRange)
{
if (ipRange == null)
throw new ArgumentNullException();
if (!TryParseCIDRNotation(ipRange) && !TryParseSimpleRange(ipRange))
throw new ArgumentException();
}
public IEnumerable<IPAddress> GetAllIP()
{
int capacity = 1;
for (int i = 0; i < 4; i++)
capacity *= endIP[i] - beginIP[i] + 1;
List<IPAddress> ips = new List<IPAddress>(capacity);
for (int i0 = beginIP[0]; i0 <= endIP[0]; i0++)
{
for (int i1 = beginIP[1]; i1 <= endIP[1]; i1++)
{
for (int i2 = beginIP[2]; i2 <= endIP[2]; i2++)
{
for (int i3 = beginIP[3]; i3 <= endIP[3]; i3++)
{
ips.Add(new IPAddress(new byte[] { (byte)i0, (byte)i1, (byte)i2, (byte)i3 }));
}
}
}
}
return ips;
}
/// <summary>
/// Parse IP-range string in CIDR notation.
/// For example "12.15.0.0/16".
/// </summary>
/// <param name="ipRange"></param>
/// <returns></returns>
private bool TryParseCIDRNotation(string ipRange)
{
string[] x = ipRange.Split('/');
if (x.Length != 2)
return false;
byte bits = byte.Parse(x[1]);
uint ip = 0;
String[] ipParts0 = x[0].Split('.');
for (int i = 0; i < 4; i++)
{
ip = ip << 8;
ip += uint.Parse(ipParts0[i]);
}
byte shiftBits = (byte)(32 - bits);
uint ip1 = (ip >> shiftBits) << shiftBits;
if (ip1 != ip) // Check correct subnet address
return false;
uint ip2 = ip1 >> shiftBits;
for (int k = 0; k < shiftBits; k++)
{
ip2 = (ip2 << 1) + 1;
}
beginIP = new byte[4];
endIP = new byte[4];
for (int i = 0; i < 4; i++)
{
beginIP[i] = (byte) ((ip1 >> (3 - i) * 8) & 255);
endIP[i] = (byte)((ip2 >> (3 - i) * 8) & 255);
}
return true;
}
/// <summary>
/// Parse IP-range string "12.15-16.1-30.10-255"
/// </summary>
/// <param name="ipRange"></param>
/// <returns></returns>
private bool TryParseSimpleRange(string ipRange)
{
String[] ipParts = ipRange.Split('.');
beginIP = new byte[4];
endIP = new byte[4];
for (int i = 0; i < 4; i++)
{
string[] rangeParts = ipParts[i].Split('-');
if (rangeParts.Length < 1 || rangeParts.Length > 2)
return false;
beginIP[i] = byte.Parse(rangeParts[0]);
endIP[i] = (rangeParts.Length == 1) ? beginIP[i] : byte.Parse(rangeParts[1]);
}
return true;
}
private byte [] beginIP;
private byte [] endIP;
}
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
Net系统;
使用System.Text.RegularExpressions;
命名空间IpRanges
{
公共类IPRange
{
公共IPRange(字符串IPRange)
{
如果(ipRange==null)
抛出新ArgumentNullException();
如果(!TryParseCIDRNotation(ipRange)和&!TryParseSimpleRange(ipRange))
抛出新ArgumentException();
}
公共IEnumerable GetAllIP()
{
int容量=1;
对于(int i=0;i<4;i++)
容量*=endIP[i]-beginIP[i]+1;
列表IP=新列表(容量);
对于(inti0=beginIP[0];i0>(3-i)*8)和255);
}
返回true;
}
///
///解析IP范围字符串“12.15-16.1-30.10-255”
///
///
///
私有bool TryParseSimpleRange(字符串ipRange)
{
字符串[]ipParts=ipRange.Split('.');
beginIP=新字节[4];
endIP=新字节[4];
对于(int i=0;i<4;i++)
{
字符串[]rangeParts=ipParts[i]。拆分('-');
如果(rangeParts.Length<1 | | rangeParts.Length>2)
返回false;
beginIP[i]=byte.Parse(rangeParts[0]);
endIP[i]=(rangeParts.Length==1)?beginIP[i]:byte.Parse(rangeParts[1]);
}
返回true;
}
私有字节[]beginIP;
私有字节[]endIP;
}
}
我认为应该这样做
static void TestFunc()
{
byte[,] range = ParseRange("192.0.2-5.14-28");
foreach (IPAddress addr in Enumerate(range))
{
Console.WriteLine(addr);
}
}
static byte[,] ParseRange(string str)
{
if (string.IsNullOrEmpty(str)) throw new ArgumentException("str");
string[] partStr = str.Split('.');
if (partStr.Length != 4) throw new FormatException();
byte[,] range = new byte[4, 2];
for (int i = 0; i < 4; i++)
{
string[] rangeStr = partStr[i].Split('-');
if (rangeStr.Length > 2) throw new FormatException();
range[i, 0] = byte.Parse(rangeStr[0]);
range[i, 1] = byte.Parse(rangeStr[Math.Min(rangeStr.Length - 1, 1)]);
// Remove this to allow ranges to wrap around.
// For example: 254-4 = 254, 255, 0, 1, 2, 3, 4
if (range[i, 1] < range[i, 0]) throw new FormatException();
}
return range;
}
static IEnumerable<IPAddress> Enumerate(byte[,] range)
{
if (range.GetLength(0) != 4) throw new ArgumentException("range");
if (range.GetLength(1) != 2) throw new ArgumentException("range");
for (byte a = range[0, 0]; a != (byte)(range[0, 1] + 1); a++)
{
for (byte b = range[1, 0]; b != (byte)(range[1, 1] + 1); b++)
{
for (byte c = range[2, 0]; c != (byte)(range[2, 1] + 1); c++)
{
for (byte d = range[3, 0]; d != (byte)(range[3, 1] + 1); d++)
{
yield return new IPAddress(new byte[] { a, b, c, d });
}
}
}
}
}
static void TestFunc()
{
字节[,]范围=解析范围(“192.0.2-5.14-28”);
foreach(枚举中的IP地址地址(范围))
{
控制台写入线(地址);
}
}
静态字节[,]解析范围(字符串str)
{
if(string.IsNullOrEmpty(str))抛出新的ArgumentException(“str”);
字符串[]partStr=str.Split('.');
如果(partStr.Length!=4)抛出新的FormatException();
字节[,]范围=新字节[4,2];
对于(int i=0;i<4;i++)
{
字符串[]rangeStr=partStr[i]。拆分('-');
如果(rangeStr.Length>2)抛出新的FormatException();
range[i,0]=byte.Parse(rangeStr[0]);
range[i,1]=byte.Parse(rangeStr[Math.Min(rangeStr.Length-1,1)];
//删除此选项以允许范围环绕。
//例如:254-4=254、255、0、1、2、3、4
if(range[i,1]
我比赛迟到了,但是你的问题被重复提到,所以我在这里添加了答案。使用库,你可以像这样枚举你的IP:
var start = IPAddress.Parse("192.168.0.2");
var end = IPAddress.Parse("192.168.0.254");
var range = new IPAddressRange(start, end);
foreach (var ip in range)
{
Console.WriteLine(ip);
}
该库还支持CIDR表示法和范围字符串