public void GetMaskBytes(Byte identiifer, Byte[] expectedMask)
{
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(identiifer));
Assert.Equal(identiifer, mask.Identifier);
Assert.Equal(expectedMask, mask.GetMaskBytes());
}
public void ApplyValues()
{
String ipAddress = "fe80::";
Byte subnetmaskLength = 32;
IPv6Address address = IPv6Address.FromString(ipAddress);
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(subnetmaskLength));
Mock <ISerializer> serializerMock = new Mock <ISerializer>(MockBehavior.Strict);
serializerMock.Setup(x => x.Deserialze <IPv6Address>(ipAddress)).Returns(address).Verifiable();
serializerMock.Setup(x => x.Deserialze <IPv6SubnetMask>(subnetmaskLength.ToString())).Returns(mask).Verifiable();
var resolver = new DHCPv6RelayAgentSubnetResolver();
resolver.ApplyValues(new Dictionary <String, String> {
{ "NetworkAddress", ipAddress },
{ "SubnetMask", subnetmaskLength.ToString() },
}, serializerMock.Object);
Assert.Equal(address, resolver.NetworkAddress);
Assert.Equal(mask, resolver.SubnetMask);
serializerMock.Verify();
var expectedValues = new Dictionary <String, String>
{
{ "NetworkAddress", ipAddress },
{ "SubnetMask", subnetmaskLength.ToString() },
};
Assert.Equal(expectedValues.ToArray(), resolver.GetValues().ToArray());
}
public void PacketMeetsCondition(Boolean isInSubnet)
{
Random random = new Random();
String ipAddress = "fe80::0";
Byte subnetmaskLength = 32;
IPv6Address address = IPv6Address.FromString(ipAddress);
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(subnetmaskLength));
Mock <ISerializer> serializerMock = new Mock <ISerializer>(MockBehavior.Strict);
serializerMock.Setup(x => x.Deserialze <IPv6Address>(ipAddress)).Returns(address).Verifiable();
serializerMock.Setup(x => x.Deserialze <IPv6SubnetMask>(subnetmaskLength.ToString())).Returns(mask).Verifiable();
DHCPv6RelayAgentSubnetResolver resolver = new DHCPv6RelayAgentSubnetResolver();
resolver.ApplyValues(new Dictionary <String, String> {
{ "NetworkAddress", ipAddress },
{ "SubnetMask", subnetmaskLength.ToString() },
}, serializerMock.Object);
var packet = DHCPv6RelayPacket.AsOuterRelay(new IPv6HeaderInformation(IPv6Address.FromString("fe80::1"), IPv6Address.FromString("fe80::2")),
true, 1, random.GetIPv6Address(), random.GetIPv6Address(), Array.Empty <DHCPv6PacketOption>(), DHCPv6RelayPacket.AsInnerRelay(
true, 0, isInSubnet == true ? IPv6Address.FromString("fe80::1") : IPv6Address.FromString("2004::1"), IPv6Address.FromString("fe80::1"), new DHCPv6PacketOption[]
{
}, DHCPv6Packet.AsInner(random.NextUInt16(), DHCPv6PacketTypes.Solicit, Array.Empty <DHCPv6PacketOption>())));
Boolean result = resolver.PacketMeetsCondition(packet);
Assert.Equal(isInSubnet, result);
serializerMock.Verify();
}
internal DHCPv6PrefixDelegation(IPv6Address address, Byte length, UInt32 identityAssociation, DateTime started)
{
NetworkAddress = address;
Mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(length));
IdentityAssociation = identityAssociation;
Started = started;
}
public void IsIPv6AdressANetworkAddress(String ipv6Adress, Byte identiifer, Boolean expectedResult)
{
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(identiifer));
Boolean actual = mask.IsIPv6AdressANetworkAddress(IPv6Address.FromString(ipv6Adress));
Assert.Equal(expectedResult, actual);
}
public void IsAddressInSubnet(String networkAddress, Byte length, String address, Boolean expectedResult)
{
IPv6Address parsedNetworkAddress = IPv6Address.FromString(networkAddress);
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(length));
IPv6Address parsedAddress = IPv6Address.FromString(address);
Boolean actual = mask.IsAddressInSubnet(parsedNetworkAddress, parsedAddress);
Assert.Equal(expectedResult, actual);
}
public void FromValues_Failed_AddressNotMatch()
{
Random random = new Random();
IPv6Address address = IPv6Address.FromString("2001:e68:5423:3a2b:716b:ef6e:b215:fb96");
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(64));
UInt32 id = random.NextUInt32();
Assert.ThrowsAny <Exception>(() => DHCPv6PrefixDelegation.FromValues
(address, mask, id));
}
public void SerialzeAndDeserilize()
{
JSONBasedSerializer serializer = new JSONBasedSerializer();
for (Byte i = 0; i <= 128; i++)
{
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(i));
var serilizedValue = serializer.Seralize(mask);
Assert.Equal($"\"{i}\"", serilizedValue);
IPv6SubnetMask actual = serializer.Deserialze <IPv6SubnetMask>(serilizedValue);
Assert.Equal(mask, actual);
}
}
public static DHCPv6PrefixDelegation FromValues(
IPv6Address address, IPv6SubnetMask mask, UInt32 identityAssociation)
{
if (mask.IsIPv6AdressANetworkAddress(address) == false)
{
throw new ArgumentException(nameof(address));
}
return(new DHCPv6PrefixDelegation
{
IdentityAssociation = identityAssociation,
Mask = mask,
NetworkAddress = address,
});
}
public PrefixBinding(IPv6Address prefix, IPv6SubnetMask mask, IPv6Address host)
{
if (mask.IsIPv6AdressANetworkAddress(prefix) == false)
{
throw new ArgumentException("");
}
if (mask.IsAddressInSubnet(prefix, host) == true)
{
throw new ArgumentException();
}
Prefix = prefix;
Mask = mask;
Host = host;
}
public void FromValues()
{
Random random = new Random();
IPv6Address address = IPv6Address.FromString("fe90::0");
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(64));
UInt32 id = random.NextUInt32();
DHCPv6PrefixDelegation value = DHCPv6PrefixDelegation.FromValues
(address, mask, id);
Assert.NotNull(value);
Assert.Equal(address, value.NetworkAddress);
Assert.Equal(64, value.Mask.Identifier);
Assert.Equal(id, value.IdentityAssociation);
}
public static DHCPv6PrefixDelgationInfo FromValues(
IPv6Address prefix, IPv6SubnetMaskIdentifier prefixLength, IPv6SubnetMaskIdentifier assignedPrefixLength)
{
if (prefixLength.Value > assignedPrefixLength.Value)
{
throw new ArgumentException();
}
IPv6SubnetMask mask = new IPv6SubnetMask(prefixLength);
if (mask.IsIPv6AdressANetworkAddress(prefix) == false)
{
throw new ArgumentException();
}
return(new DHCPv6PrefixDelgationInfo(prefix, prefixLength, assignedPrefixLength));
}
public void Constructor(String prefix, Byte prefixLength, String host, Boolean expectedResult)
{
IPv6Address prefixAddress = IPv6Address.FromString(prefix);
IPv6Address hostAddress = IPv6Address.FromString(host);
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(prefixLength));
if (expectedResult == true)
{
var binding = new PrefixBinding(prefixAddress, mask, hostAddress);
Assert.Equal(prefixAddress, binding.Prefix);
Assert.Equal(hostAddress, binding.Host);
Assert.Equal(mask, binding.Mask);
}
else
{
Assert.ThrowsAny <Exception>(() => new PrefixBinding(prefixAddress, mask, hostAddress));
}
}
public Boolean ArePropertiesAndValuesValid(IDictionary <String, String> valueMapper, ISerializer serializer)
{
if (valueMapper.ContainsKeys(new[] { nameof(NetworkAddress), nameof(SubnetMask) }) == false)
{
return(false);
}
try
{
IPv6Address networkAddress = serializer.Deserialze <IPv6Address>(valueMapper[nameof(NetworkAddress)]);
IPv6SubnetMask mask = serializer.Deserialze <IPv6SubnetMask>(valueMapper[nameof(SubnetMask)]);
return(mask.IsIPv6AdressANetworkAddress(networkAddress));
}
catch (Exception)
{
return(false);
}
}
public void ArePropertiesAndValuesValid(String ipAddress, Byte subnetmaskLength, Boolean shouldBeValid)
{
IPv6Address address = IPv6Address.FromString(ipAddress);
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(subnetmaskLength));
Mock <ISerializer> serializerMock = new Mock <ISerializer>(MockBehavior.Strict);
serializerMock.Setup(x => x.Deserialze <IPv6Address>(ipAddress)).Returns(address).Verifiable();
serializerMock.Setup(x => x.Deserialze <IPv6SubnetMask>(subnetmaskLength.ToString())).Returns(mask).Verifiable();
var resolver = new DHCPv6RelayAgentSubnetResolver();
Boolean actual = resolver.ArePropertiesAndValuesValid(new Dictionary <String, String> {
{ "NetworkAddress", ipAddress },
{ "SubnetMask", subnetmaskLength.ToString() },
}, serializerMock.Object);
Assert.Equal(shouldBeValid, actual);
serializerMock.Verify();
}
internal IPv6Address GetNextPrefix(IEnumerable <IPv6Address> used)
{
IList <IPv6Address> sorted = used.OrderBy(x => x).ToList();
if (sorted.Count == 0)
{
return(IPv6Address.FromAddress(PrefixDelgationInfo.Prefix));
}
Double max = Math.Pow(2, PrefixDelgationInfo.AssignedPrefixLength - PrefixDelgationInfo.PrefixLength);
if (sorted.Count == max)
{
return(IPv6Address.Empty);
}
Byte[] maskBytes = new IPv6SubnetMask(PrefixDelgationInfo.AssignedPrefixLength).GetMaskBytes();
Byte[] deltaBytes = new Byte[16];
for (int i = 0; i < 16; i++)
{
deltaBytes[i] = (Byte)(255 - maskBytes[i]);
}
IPv6Address delta = IPv6Address.FromByteArray(deltaBytes) + 1;
IPv6Address current = PrefixDelgationInfo.Prefix - delta.GetBytes();
foreach (var item in sorted)
{
IPv6Address expectedAddresses = current + delta;
if (item != expectedAddresses)
{
break;
}
current = expectedAddresses;
}
return(current + delta);
}
internal IPv6Address GetRandomPrefix(HashSet <IPv6Address> hashedUsedPrefixes)
{
Random random = new Random();
Byte[] addressBytes = new byte[16];
IPv6SubnetMask mask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(PrefixDelgationInfo.PrefixLength));
Byte[] addressMaskBytes = mask.GetMaskBytes();
Byte[] ipAddressBytes = PrefixDelgationInfo.Prefix.GetBytes();
IPv6SubnetMask delegatedMask = new IPv6SubnetMask(new IPv6SubnetMaskIdentifier(PrefixDelgationInfo.AssignedPrefixLength));
Byte[] delegatedMaskBytes = delegatedMask.GetMaskBytes();
Int32 randomizationIndex = -1;
for (int i = 0; i < 16; i++)
{
if (addressMaskBytes[i] != 255)
{
randomizationIndex = i;
break;
}
else
{
addressBytes[i] = ipAddressBytes[i];
}
}
IPv6Address nextNetworkAddress;
Int32 trysLeft = _maxTriesForRandom;
do
{
if (randomizationIndex >= 0)
{
Boolean lengthAndAssigendLengthInSameByte = PrefixDelgationInfo.PrefixLength / 8 == (PrefixDelgationInfo.AssignedPrefixLength - 1) / 8;
if (lengthAndAssigendLengthInSameByte == true)
{
Byte diff = (Byte)(delegatedMaskBytes[randomizationIndex] - addressMaskBytes[randomizationIndex]);
ByteHelper.AddRandomBits(random, addressBytes, randomizationIndex, diff, ipAddressBytes[randomizationIndex]);
}
else
{
addressBytes[randomizationIndex] = (Byte)(addressMaskBytes[randomizationIndex] + random.Next(0, 255 - addressMaskBytes[randomizationIndex] + 1));
}
for (int i = randomizationIndex + 1; i < 16; i++)
{
if (delegatedMaskBytes[i] == 255)
{
addressBytes[i] = (Byte)random.Next(0, 256);
}
else
{
addressBytes[i] = (Byte)(random.Next(0, delegatedMaskBytes[i]));
ByteHelper.AddRandomBits(random, addressBytes, i, delegatedMaskBytes[i], 0);
break;
}
}
}
nextNetworkAddress = IPv6Address.FromByteArray(addressBytes);
} while (trysLeft-- > 0 && hashedUsedPrefixes.Contains(nextNetworkAddress) == true);
return(nextNetworkAddress);
}
public void ApplyValues(IDictionary <string, string> valueMapper, ISerializer serializer)
{
NetworkAddress = serializer.Deserialze <IPv6Address>(valueMapper[nameof(NetworkAddress)]);
SubnetMask = serializer.Deserialze <IPv6SubnetMask>(valueMapper[nameof(SubnetMask)]);
}
