public static Dictionary <string, string> ReturnMatchedIPRange(List <string> ips, List <Value> azureIps)
{
Dictionary <string, string> matchedIps = new Dictionary <string, string>();
foreach (var ip in ips)
{
bool ipFound = false;
IPNetwork incomingNetwork = null;
IPAddress incomingIp = IsValidIP(ip) ? IPAddress.Parse(ip) : null;
bool incomingNetworkParsed = incomingIp == null?IPNetwork.TryParse(ip, out incomingNetwork) : false;
if (incomingIp != null || incomingNetwork != null)
{
foreach (var azureip in azureIps)
{
foreach (var subnet in azureip.properties.addressPrefixes)
{
IPNetwork network = IPNetwork.Parse(subnet);
if (((incomingIp != null && network.Contains(incomingIp)) ||
(incomingNetwork != null && network.Contains(incomingNetwork))) &&
!ipFound)
{
matchedIps.Add(ip, $"{subnet} - {azureip.name}");
ipFound = true;
break;
}
}
}
if (!ipFound)
{
if (!matchedIps.ContainsKey(ip))
{
matchedIps.Add(ip, "No Match");
}
}
}
else
{
if (!matchedIps.ContainsKey(ip))
{
matchedIps.Add(ip, "No Match");
}
}
}
return(matchedIps);
}
public bool AddSrcAddress(IPAddress SrcIP)
{
IPNetwork localnet192 = IPNetwork.Parse("192.168.0.0/16");
IPNetwork localnet172 = IPNetwork.Parse("172.16.0.0/12");
IPNetwork localnet169 = IPNetwork.Parse("169.254.0.0/16");
IPNetwork localnet10 = IPNetwork.Parse("10.0.0.0/8");
if (SrcIP.IsIPv6LinkLocal || SrcIP.IsIPv6Multicast || SrcIP.IsIPv6SiteLocal || SrcIP.IsIPv6Teredo)
{
return(false);
}
if (localnet192.Contains(SrcIP) || localnet172.Contains(SrcIP) || localnet169.Contains(SrcIP) || localnet10.Contains(SrcIP))
{
return(false);
}
if (SrcIP.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
IPv4SrcList.Add(SrcIP);
}
if (SrcIP.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
IPv6SrcList.Add(SrcIP);
}
return(true);
}
/// <summary>
/// Finds the first network interface that has a matching unicast address-
/// </summary>
/// <param name="mask">IPv4/IPv6 address or CIDR mask.</param>
/// <returns>a matching interface or null</returns>
public static NetworkInterface GetNetworkInterfaceFromCIDR(string mask)
{
if (mask.Contains('/'))
{
IPNetwork ipnetwork = IPNetwork.Parse(mask);
foreach (NetworkInterface nic in GetNetworkInterfaces())
{
var unicastAddresses = nic.GetIPProperties().UnicastAddresses;
if (unicastAddresses.Any(ua => ipnetwork.Contains(ua.Address)))
{
return(nic);
}
}
}
else
{
var address = IPAddress.Parse(mask);
foreach (NetworkInterface nic in GetNetworkInterfaces())
{
var unicastAddresses = nic.GetIPProperties().UnicastAddresses;
if (unicastAddresses.Select(ua => ua.Address).Contains(address))
{
return(nic);
}
}
}
return(null);
}
static List <IPNetwork> RecursiveAdd(IPNetwork target, IPNetwork subtract, List <IPNetwork> newNetwork)
{
if (subtract.Contains(target) || target.Cidr >= 31)
{
return(newNetwork);
}
var splitted = Split(target);
var firstOverLap = subtract.Overlap(splitted[0]);
var secondOverlap = subtract.Overlap(splitted[1]);
if (firstOverLap && secondOverlap)
{
RecursiveAdd(splitted[0], subtract, newNetwork);
RecursiveAdd(splitted[1], subtract, newNetwork);
}
else if (firstOverLap)
{
newNetwork.Add(splitted[1]);
RecursiveAdd(splitted[0], subtract, newNetwork);
}
else if (secondOverlap)
{
newNetwork.Add(splitted[0]);
RecursiveAdd(splitted[1], subtract, newNetwork);
}
return(newNetwork);
}
public static string ReturnNetwork(string ip)
{
try
{
IPAddress incomingIp = IPAddress.Parse(ip);
foreach (var subnet in networks)
{
IPNetwork network = IPNetwork.Parse(subnet);
if (network.Contains(incomingIp))
{
return(ip);
}
else
{
continue;
}
}
}
catch (Exception ex)
{
using (StreamWriter writer = new StreamWriter(log, true))
{
while (ex != null)
{
writer.WriteLine("Message : " + ex.Message + "ip address: " + ip);
ex = ex.InnerException;
}
}
}
return(string.Empty);
}
private async Task FindVnetAndSubnetAsync(CancellationToken cancellationToken)
{
Debug.Assert(subscriptionId != null);
Debug.Assert(resourceGroupName != null);
Debug.Assert(targetIPAddress != null);
IPAddress virtualMachineIPAddress;
if (!IPAddress.TryParse(targetIPAddress, out virtualMachineIPAddress))
{
throw new ArgumentException("Invalid format of the IP address");
}
var virtualNetworks = (await resourceManager.GetAsync($"/subscriptions/{subscriptionId}/" +
$"resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualnetworks",
cancellationToken))["value"].ToArray();
foreach (var virtualNetwork in virtualNetworks)
{
var subnets = virtualNetwork["properties"]["subnets"].ToArray();
foreach (var subnet in subnets)
{
var addressSpace = subnet["properties"].Value <string>("addressPrefix");
var ipNetwork = IPNetwork.Parse(addressSpace);
if (IPNetwork.Contains(ipNetwork, virtualMachineIPAddress))
{
virtualNetworkId = virtualNetwork.Value <string>("id");
subnetId = subnet.Value <string>("id");
return;
}
}
}
throw new ArgumentException("There is no subnet that contains an IP address " +
$"'{virtualMachineIPAddress}' in a resource group '{resourceGroupName}'");
}
private void StartIpBlur(FocusEventArgs e)
{
if (!IPAddress.TryParse(subnet.StartIP, out IPAddress ipAddress))
{
startIpError = true;
errorMessage = "The start ip is not valid.";
return;
}
// RFC1918
IPNetwork network1 = IPNetwork.Parse("10.0.0.0/8");
IPNetwork network2 = IPNetwork.Parse("172.16.0.0/12");
IPNetwork network3 = IPNetwork.Parse("192.168.0.0/16");
if (!network1.Contains(ipAddress) && !network2.Contains(ipAddress) && !network3.Contains(ipAddress))
{
startIpError = true;
errorMessage = "The start ip is not in the range of RFC1918.";
return;
}
subnet.IPRangeId = GetIpRangeId(IPNetwork.Parse($"{subnet.StartIP}/32"));
if (subnet.IPRangeId < 0)
{
startIpError = true;
errorMessage = "The start ip is not contained in the virtual network's address spaces.";
return;
}
startIpError = false;
errorMessage = string.Empty;
}
private bool IsValidIP(string ip)
{
string[] ranges = new string[] {
"167.220.0.0/16", //Boston
"131.107.0.0/16", // MS Corp-8 (Redmond)
"157.54.0.0/15", // Other MSCorp. ** this list came from Steve Morin.
"157.56.0.0/15",
"157.58.0.0/15",
"157.60.0.0/16",
//"0.0.0.0/8", // localhost
"::1", // localhosts
"73.4.97.83" // comcast
//"127.0.0.1" // localhost
};
var userIP = IPNetwork.Parse(ip);
foreach (string r in ranges)
{
var range = IPNetwork.Parse(r);
if (IPNetwork.Contains(range, userIP))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Gets all unique <c>pairs</c> of hosts with monitoring flag set and which share the same subnet.<br/>
/// Subnets with less than or more than two hosts will be discarded.
/// </summary>
/// <param name="hamnetDbAccess">The handle to access the database.</param>
/// <param name="subnet">The subnet to return data for.</param>
/// <returns>The dictionary mapping a subnet to its unique monitored host pair.</returns>
public static IReadOnlyDictionary <IHamnetDbSubnet, IHamnetDbHosts> UniqueMonitoredHostPairsInSubnet(this IHamnetDbAccess hamnetDbAccess, IPNetwork subnet)
{
if (hamnetDbAccess == null)
{
throw new ArgumentNullException(nameof(hamnetDbAccess), "hamnetDbAccess to work with is null");
}
if (subnet == null)
{
throw new ArgumentNullException(nameof(subnet), "subnet search monitored hosts for is null");
}
var directSupportHamnetAccess = hamnetDbAccess as IDirectSupportOfHamnetDbAccessExtensions;
if (directSupportHamnetAccess != null)
{
return(directSupportHamnetAccess.UniqueMonitoredHostPairsInSubnet(subnet));
}
var hosts = hamnetDbAccess.QueryMonitoredHosts();
var allSubnets = hamnetDbAccess.QuerySubnets();
// filter out parents for which we have nested subnets
var subnets = allSubnets.Where(s => !allSubnets.Any(a => !object.ReferenceEquals(s.Subnet, a.Subnet) && s.Subnet.Contains(a.Subnet)));
var association = subnets.AssociateHosts(hosts);
var uniquePairs = association
.Where(a => subnet.Contains(a.Key.Subnet) || subnet.Equals(a.Key.Subnet))
.Where(a => a.Value.Count == 2)
.ToDictionary(k => k.Key, v => v.Value);
return(uniquePairs);
}
public static bool IsIpInRange(string ip, string range)
{
IPNetwork IpNetwork = IPNetwork.Parse(range);
IPAddress incomingIp = IPAddress.Parse(ip);
return(IPNetwork.Contains(IpNetwork, incomingIp));
}
public bool IsInSubnet(Subnet source, Subnet toTest)
{
IPNetwork sourceSubnet = IPNetwork.Parse(source.IPAddress, source.Cidr);
IPNetwork testSubnet = IPNetwork.Parse(toTest.IPAddress, toTest.Cidr);
return(sourceSubnet.Contains(testSubnet));
}
private void AddListenIpToList()
{
string hostName = Dns.GetHostName();
var addressList = Dns.GetHostAddresses(hostName);
IPNetwork localnet192 = IPNetwork.Parse("192.168.0.0/16");
IPNetwork localnet172 = IPNetwork.Parse("172.16.0.0/12");
IPNetwork localnet169 = IPNetwork.Parse("169.254.0.0/16");
IPNetwork localnet10 = IPNetwork.Parse("10.0.0.0/8");
foreach (IPAddress ip in addressList.Distinct().ToList())
{
if (ip.IsIPv6LinkLocal || ip.IsIPv6Multicast || ip.IsIPv6SiteLocal || ip.IsIPv6Teredo)
{
continue;
}
if (localnet192.Contains(ip) || localnet172.Contains(ip) || localnet169.Contains(ip) || localnet10.Contains(ip))
{
continue;
}
if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
listListenIP.Items.Add(ip);
}
if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
listListenIP.Items.Add(ip);
}
}
}
private static void ContainNetwork(ProgramContext ac)
{
foreach (IPNetwork ipnetwork in ac.Networks)
{
bool contain = IPNetwork.Contains(ac.ContainNetwork, ipnetwork);
Console.WriteLine("{0} contains {1} : {2}", ac.ContainNetwork, ipnetwork, contain);
}
}
private async Task StartIpBlur(IPRange ipRange)
{
bool validIp = IPAddress.TryParse(ipRange.StartIpHolder, out IPAddress ipAddress);
if (!validIp)
{
ipRange.IpInvalidMessage = "Network IP address is not valid.";
ipRange.HolderIpInvalid = !validIp;
return;
}
// RFC1918
IPNetwork network1 = IPNetwork.Parse("10.0.0.0/8");
IPNetwork network2 = IPNetwork.Parse("172.16.0.0/12");
IPNetwork network3 = IPNetwork.Parse("192.168.0.0/16");
if (!network1.Contains(ipAddress) && !network2.Contains(ipAddress) && !network3.Contains(ipAddress))
{
ipRange.IpInvalidMessage = $"Network IP address is not recommended. " +
$"<a href=\"https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#what-address-ranges-can-i-use-in-my-vnets\" target=\"_blank\">More info</a>";
ipRange.HolderIpInvalid = true;
return;
}
ipRange.HolderIpInvalid = false;
ipRange.IpInvalidMessage = string.Empty;
var subnets = _vnet.Subnets.Where(s => s.IPRangeId == ipRange.Id).ToList();
if (subnets.Count > 0 && ipRange.StartIpHolder != ipRange.StartIP)
{
// Too complex to sort out new addresses for all subnets. So reset them.
var content = "Chaning network IP will reset all its subnets!";
var title = "Warning";
var confirmResult = await _confirmService.Show(content, title, ConfirmButtons.OKCancel, ConfirmIcon.Warning,
new ConfirmButtonOptions()
{
Button1Props = new ButtonProps()
{
Type = "primary",
Danger = true
}
});
if (confirmResult == ConfirmResult.OK)
{
_vnet.SetVnetStartIp(ipRange.Id, ipRange.StartIpHolder);
_vnet.ResetSubnets(ipRange.Id);
}
}
else
{
_vnet.SetVnetStartIp(ipRange.Id, ipRange.StartIpHolder);
}
ipRange.StartIpHolder = ipRange.StartIP;
}
public static bool IsAllowed(HttpContext context)
{
var ip = GetIpAddress(context);
var userIsOnEsportsNetwork = IPNetwork.Contains(EsportsNetwork, IPAddress.Parse(ip));
var userIsOnEduroamNetwork = IPNetwork.Contains(EduroamNetwork, IPAddress.Parse(ip));
var userIsLocalhost = IPNetwork.Contains(LocalhostNetwork, IPAddress.Parse(ip));
var userIsLocalhostIPv6 = IPNetwork.Contains(LocalhostNetworkIPv6, IPAddress.Parse(ip));
return(userIsOnEsportsNetwork || userIsOnEduroamNetwork || userIsLocalhost || userIsLocalhostIPv6);
}
/// <summary>
/// 2 개의 IP 를 비교하여 ipAddr2 가 ipAddr1 에 속하는지 여부를 반환합니다.
/// </summary>
/// <param name="ipAddr1">기준이 되는 Ip Addr</param>
/// <param name="ipAddr2">ipAddr1 에 종속되는 ip 인지 확인할 Ip Addr</param>
/// <returns>ture : ipAddr2 가 ipAddr1 에 종속 / false : ipAddr2 가 ipAddr1 에 종속되지 않음</returns>
public static bool ValidationIpAddresInGroup(string ipAddr1, string ipAddr2)
{
bool returnResult = false;
IPNetwork ipnetwork = IPNetwork.Parse(ipAddr1 + "/24");
IPAddress ipaddress = IPAddress.Parse(ipAddr2);
returnResult = IPNetwork.Contains(ipnetwork, ipaddress);
return(returnResult);
}
/// <summary>
/// Localiza la ip
/// </summary>
/// <param name="address">Direccón</param>
public GeoLocateResult LocateIp(IPAddress address)
{
foreach (geoIp g in _Locates)
{
if (IPNetwork.Contains(g.Network, address))
{
return(g.Result);
}
}
return(GeoLocateResult.Empty);
}
public static bool ValidaRangoIPV4(string ipDir, string dirRed, string cidr)
{
string rango = dirRed + cidr;
IPNetwork ipnetwork = IPNetwork.Parse(rango);
IPAddress ipaddress = IPAddress.Parse(ipDir);
IPAddress ipaddress2 = IPAddress.Parse("192.168.0.200");
#pragma warning disable CS0618 // El tipo o el miembro están obsoletos
bool contains = IPNetwork.Contains(ipnetwork, ipaddress);
#pragma warning restore CS0618 // El tipo o el miembro están obsoletos
return(contains);
}
public static bool ValidaRangoIPV6(string ipDir, string dirRed, string cidr)
{
string rango = dirRed + cidr;
IPNetwork ipnetwork = IPNetwork.Parse(rango);
IPAddress ipaddress = IPAddress.Parse(ipDir);
IPAddress ipaddress2 = IPAddress.Parse("fe80::202:b3ff:fe1e:1");
#pragma warning disable CS0618 // El tipo o el miembro están obsoletos Ignoramos la advertencia del compilador
bool contains = IPNetwork.Contains(ipnetwork, ipaddress);
#pragma warning restore CS0618 // El tipo o el miembro están obsoletos
return(contains);
}
public void ParseTest()
{
//http://www.subnet-calculator.com/cidr.php
//IPNetwork mynetwork = new IPNetwork();
IPNetwork ipnetwork = IPNetwork.Parse("198.169.76.64/26");
IPAddress ipaddress = IPAddress.Parse("198.169.76.75");
//198.238.108.200
bool result = IPNetwork.Contains(ipnetwork, ipaddress);
bool expected = true;
Assert.AreEqual(expected, result, "contains");
}
public static bool IsCloudFlareIP(string ip)
{
foreach (string block in CloudFlareIPRanges)
{
IPNetwork network = IPNetwork.Parse(block);
if (IPNetwork.Contains(network, IPAddress.Parse(ip)))
{
return(true);
}
}
return(false);
}
public static bool IsBlocked(string ip)
{
IPAddress ipAddress;
if (ip != null && ip == "::1")
{
ip = "127.0.0.1";
}
if (IPAddress.TryParse(ip, out ipAddress))
{
return(BlockedIpList.Any(n => IPNetwork.Contains(n, ipAddress)));
}
return(true);
}
public static bool IsIpNat(string ip)
{
IPAddress incomingIp = IPAddress.Parse(ip);
foreach (var subnet in IpBlocks)
{
IPNetwork network = IPNetwork.Parse(subnet);
if (IPNetwork.Contains(network, incomingIp))
{
return(true);
}
}
return(false);
}
public static bool IsUserIpWhiteListed(string userIp, string acl)
{
var aclList = acl.Split(',').ToList();
//try for a exact IP match
if (aclList.Contains(userIp) || userIp == "127.0.0.1")
{
return(true);
}
//try for a network match by CIDR notation; i.e. 10.0.0.0/8
var networkList = aclList.Where(x => x.Contains('/'));
return(networkList.Any(x => IPNetwork.Contains(IPNetwork.Parse(x), IPAddress.Parse(userIp))));
}
private static string DetermineIPv4AddressType(IPAddress address)
{
if (MulticastNetwork.Contains(address))
{
return("multicast");
}
else if (PrivateUseNetworks.Any(network => network.Contains(address)))
{
return("private");
}
else
{
return("public");
}
}
public string GetRegionNameByIpOrUrl(string ipOrUrl, string ipFilePath = null)
{
if (string.IsNullOrEmpty(ipOrUrl))
{
return("Must specify a valid ipAddress or url");
}
if (string.IsNullOrEmpty(ipFilePath))
{
ipFilePath = HostingEnvironment.MapPath("~/App_Data/");
}
if (!(ipOrUrl.StartsWith("http://") || ipOrUrl.StartsWith("https://")))
{
ipOrUrl = "http://" + ipOrUrl;
}
Uri tmp = new Uri(ipOrUrl);
ipOrUrl = tmp.Host;
var sw = new Stopwatch();
sw.Start();
try
{
var ips = Dns.GetHostAddresses(ipOrUrl);
var ipAddr = ips[0];
var subnets = SubnetBuilder.GetSubnetDictionary(ipFilePath);
foreach (IPNetwork net in subnets.Keys)
{
if (IPNetwork.Contains(net, ipAddr))
{
var regionAlias = subnets[net];
sw.Stop();
string region = AzureSpeedData.RegionNames[regionAlias];
logger.Info("IpOrUrl = {0}, region = {1}, time = {2}", ipOrUrl, region, sw.ElapsedMilliseconds);
return(region);
}
}
}
catch (Exception ex)
{
logger.Error(ex);
return("Invalid Address!");
}
return("Region not found");
}
public static bool IpIsWithinCloudfareIPRange(string ip)
{
IPAddress incomingIp = IPAddress.Parse(ip);
var cache = new CloudfareIPCache();
var range = (List <IPNetwork>)cache.Get();
foreach (var network in range)
{
if (IPNetwork.Contains(network, incomingIp))
{
return(true);
}
}
return(false);
}
private static IPAddress GetLocalIpAddress(IPNetwork localNetwork)
{
var host = Dns.GetHostEntry(Dns.GetHostName());
foreach (var ip in host.AddressList)
{
if (localNetwork.Contains(ip))
{
return(ip);
}
//if (IPNetwork.Contains(localNetwork, ip))
//{
// return ip;
//}
}
throw new Exception("Local IP Address Not Found!");
}
/// <summary>
/// Checks whether two ip ranges (networks) overlap.
/// </summary>
public static bool CIDROverlaps(string cidr1, string cidr2)
{
IPNetwork net1 = IPNetwork.Parse(cidr1);
IPNetwork net2 = IPNetwork.Parse(cidr2);
bool net1Contains = IPNetwork.Contains(net1, net2.Network) || IPNetwork.Contains(net1, net2.Broadcast);
bool net2Contains = IPNetwork.Contains(net2, net1.Network) || IPNetwork.Contains(net2, net1.Broadcast);
if (net1Contains || net2Contains)
{
return(true);
}
else
{
return(false);
}
}
public Guid GetLocationIdByIp(string ip)
{
IPAddress ipAddress;
if (!IPAddress.TryParse(ip, out ipAddress))
{
return(Guid.Empty);
}
var networks = _locationRepository.GetAllLocationNetworks().Where(n => n.Network.AddressFamily == ipAddress.AddressFamily);
Guid match = networks
.Where(n => IPNetwork.Contains(n.Network, ipAddress))
.OrderByDescending(n => n.Cidr)
.Select(n => n.Id)
.FirstOrDefault();
return(match);
}
