private DHCPv6Packet GetReleasePacket(
Random random, out IPv6Address usedAddress, out DUID clientDuid, out UInt32 iaId, Boolean withIdentity, params DHCPv6PacketOption[] options)
{
IPv6HeaderInformation headerInformation =
new IPv6HeaderInformation(IPv6Address.FromString("fe80::1"), IPv6Address.FromString("fe80::2"));
clientDuid = new UUIDDUID(random.NextGuid());
iaId = random.NextBoolean() == false?random.NextUInt32() : 0;
usedAddress = random.GetIPv6Address();
var packetOptions = new List <DHCPv6PacketOption>(options)
{
new DHCPv6PacketIdentifierOption(DHCPv6PacketOptionTypes.ClientIdentifier, clientDuid),
};
if (withIdentity == true)
{
packetOptions.Add(new DHCPv6PacketIdentityAssociationNonTemporaryAddressesOption(iaId, TimeSpan.FromSeconds(random.Next()), TimeSpan.FromSeconds(random.Next()), new DHCPv6PacketSuboption[]
{
new DHCPv6PacketIdentityAssociationAddressSuboption(usedAddress, TimeSpan.FromSeconds(random.Next()), TimeSpan.FromSeconds(random.Next()), Array.Empty <DHCPv6PacketSuboption>())
}));
}
DHCPv6Packet packet = DHCPv6Packet.AsOuter(headerInformation, random.NextUInt16(),
DHCPv6PacketTypes.RELEASE, packetOptions);
return(packet);
}
public async Task Handle_ResponseAvaiable()
{
IPv6HeaderInformation headerInformation = new IPv6HeaderInformation(
IPv6Address.FromString("fe80::2"), IPv6Address.FromString("fe80::1"));
DHCPv6Packet packet = DHCPv6Packet.AsOuter(headerInformation, 1, DHCPv6PacketTypes.Solicit, new List <DHCPv6PacketOption>());
DHCPv6Packet reseponsePacket = DHCPv6Packet.AsOuter(IPv6HeaderInformation.AsResponse(headerInformation), 1, DHCPv6PacketTypes.ADVERTISE, new List <DHCPv6PacketOption>());
Mock <IDHCPv6LeaseEngine> leaseEngineMock = new Mock <IDHCPv6LeaseEngine>(MockBehavior.Strict);
leaseEngineMock.Setup(x => x.HandlePacket(packet)).ReturnsAsync(reseponsePacket).Verifiable();
Mock <IServiceBus> serviceBusMock = new Mock <IServiceBus>(MockBehavior.Strict);
serviceBusMock.Setup(x => x.Publish(It.Is <DHCPv6PacketReadyToSendMessage>(y => y.Packet == reseponsePacket))).Returns(Task.CompletedTask).Verifiable();
ValidDHCPv6PacketArrivedMessageHandler handler = new ValidDHCPv6PacketArrivedMessageHandler(
serviceBusMock.Object, leaseEngineMock.Object,
Mock.Of <ILogger <ValidDHCPv6PacketArrivedMessageHandler> >());
await handler.Handle(new ValidDHCPv6PacketArrivedMessage(packet), CancellationToken.None);
leaseEngineMock.Verify();
serviceBusMock.Verify();
}
public async Task SendPacket()
{
Mock <ILoggerFactory> factoryMock = new Mock <ILoggerFactory>(MockBehavior.Strict);
factoryMock.Setup(x => x.CreateLogger(It.IsAny <String>())).Returns(Mock.Of <ILogger <DHCPv6Server> >());
DHCPv6InterfaceEngine engine = new DHCPv6InterfaceEngine(
Mock.Of <IServiceBus>(MockBehavior.Strict),
Mock.Of <IDHCPv6StorageEngine>(MockBehavior.Strict),
factoryMock.Object
);
var possibleListener = engine.GetPossibleListeners();
var listener = possibleListener.First();
engine.OpenListener(listener);
DHCPv6Packet responsePacket = DHCPv6Packet.AsOuter(
new IPv6HeaderInformation(listener.Address, listener.Address), 4, DHCPv6PacketTypes.Solicit, new List <DHCPv6PacketOption>
{
new DHCPv6PacketTrueOption(DHCPv6PacketOptionTypes.RapitCommit),
new DHCPv6PacketByteOption(DHCPv6PacketOptionTypes.Preference, 14),
});
IPAddress address = new IPAddress(listener.Address.GetBytes());
IPEndPoint localEndPoint = new IPEndPoint(address, 546);
UdpClient client = new UdpClient(localEndPoint);
client.Connect(new IPEndPoint(address, 547));
try
{
Boolean sended = engine.SendPacket(responsePacket);
Assert.True(sended);
var result = await client.ReceiveAsync();
Assert.True(result.Buffer.Length > 0);
DHCPv6Packet receivedPacket = DHCPv6Packet.FromByteArray(result.Buffer,
new IPv6HeaderInformation(listener.Address, listener.Address));
Assert.Equal(responsePacket, receivedPacket);
}
finally
{
client.Dispose();
engine.CloseListener(listener);
await Task.Delay(1000);
}
}
public async Task Handle()
{
IPv6HeaderInformation headerInformation = new IPv6HeaderInformation(
IPv6Address.FromString("fe80::2"), IPv6Address.FromString("fe80::1"));
DHCPv6Packet response = DHCPv6Packet.AsOuter(headerInformation, 1, DHCPv6PacketTypes.ADVERTISE, new List <DHCPv6PacketOption>());
Mock <IDHCPv6InterfaceEngine> interfaceEngine = new Mock <IDHCPv6InterfaceEngine>(MockBehavior.Strict);
interfaceEngine.Setup(x => x.SendPacket(response)).Returns(true).Verifiable();
DHCPv6PacketReadyToSendMessageHandler handler = new DHCPv6PacketReadyToSendMessageHandler(
interfaceEngine.Object,
Mock.Of <ILogger <DHCPv6PacketReadyToSendMessageHandler> >());
await handler.Handle(new DHCPv6PacketReadyToSendMessage(response), CancellationToken.None);
interfaceEngine.Verify();
}
private DHCPv6Packet GetSolicitPacket(
Random random, out DUID clientDuid, out UInt32 iaId, params DHCPv6PacketOption[] options)
{
IPv6HeaderInformation headerInformation =
new IPv6HeaderInformation(IPv6Address.FromString("fe80::1"), IPv6Address.FromString("fe80::1"));
clientDuid = new UUIDDUID(random.NextGuid());
iaId = random.NextUInt32();
var packetOptions = new List <DHCPv6PacketOption>(options)
{
new DHCPv6PacketIdentifierOption(DHCPv6PacketOptionTypes.ClientIdentifier, clientDuid),
new DHCPv6PacketIdentityAssociationNonTemporaryAddressesOption(iaId, TimeSpan.Zero, TimeSpan.Zero, Array.Empty <DHCPv6PacketSuboption>()),
new DHCPv6PacketTrueOption(DHCPv6PacketOptionTypes.RapitCommit),
};
DHCPv6Packet packet = DHCPv6Packet.AsOuter(headerInformation, random.NextUInt16(),
DHCPv6PacketTypes.Solicit, packetOptions);
return(packet);
}
public void PacketMeetsCondition_False_NotRelay()
{
Random random = new Random();
String value = random.GetAlphanumericString();
IPv6HeaderInformation headerInformation =
new IPv6HeaderInformation(IPv6Address.FromString("fe80::1"), IPv6Address.FromString("fe80::2"));
var packetOptions = new List <DHCPv6PacketOption>
{
new DHCPv6PacketTrueOption(DHCPv6PacketOptionTypes.RapitCommit),
};
DHCPv6Packet packet = DHCPv6Packet.AsOuter(headerInformation, random.NextUInt16(),
DHCPv6PacketTypes.Solicit, packetOptions);
Mock <ISerializer> serializerMock = new Mock <ISerializer>(MockBehavior.Strict);
serializerMock.Setup(x => x.Deserialze <String>(value)).Returns(value).Verifiable();
serializerMock.Setup(x => x.Deserialze <UInt16>("0")).Returns(0).Verifiable();
serializerMock.Setup(x => x.Deserialze <Boolean>("true")).Returns(true).Verifiable();
var resolver = new DHCPv6MilegateResolver();
resolver.ApplyValues(new Dictionary <String, String> {
{ "Value", value },
{ "Index", "0" },
{ "IsCaseSenstiveMatch", "true" },
}, serializerMock.Object);
Boolean result = resolver.PacketMeetsCondition(packet);
Assert.False(result);
serializerMock.Verify();
}
public void PacketMeetsCondition_False_NotRelay()
{
Random random = new Random();
Mock <ISerializer> serializerMock = new Mock <ISerializer>(MockBehavior.Strict);
DHCPv6SimpleZyxelIESResolver resolver = new DHCPv6SimpleZyxelIESResolver();
IPv6HeaderInformation headerInformation =
new IPv6HeaderInformation(IPv6Address.FromString("fe80::1"), IPv6Address.FromString("fe80::2"));
var packetOptions = new List <DHCPv6PacketOption>
{
new DHCPv6PacketTrueOption(DHCPv6PacketOptionTypes.RapitCommit),
};
DHCPv6Packet packet = DHCPv6Packet.AsOuter(headerInformation, random.NextUInt16(),
DHCPv6PacketTypes.Solicit, packetOptions);
Boolean result = resolver.PacketMeetsCondition(packet);
Assert.False(result);
serializerMock.Verify();
}
public async Task SeedDatabase(Boolean reset, StorageContext storageContext)
{
if (reset == true)
{
{
var packets = await storageContext.DHCPv6PacketEntries.AsQueryable().ToListAsync();
var entries = await storageContext.DHCPv6LeaseEntries.AsQueryable().ToListAsync();
storageContext.RemoveRange(packets);
storageContext.RemoveRange(entries);
}
{
var packets = await storageContext.DHCPv4PacketEntries.AsQueryable().ToListAsync();
var entries = await storageContext.DHCPv4LeaseEntries.AsQueryable().ToListAsync();
storageContext.RemoveRange(packets);
storageContext.RemoveRange(entries);
}
await storageContext.SaveChangesAsync();
}
if (storageContext.DHCPv6PacketEntries.Count() == 0)
{
DateTime start = DateTime.UtcNow.AddDays(-20);
DateTime end = DateTime.UtcNow.AddDays(20);
Int32 diff = (Int32)(end - start).TotalMinutes;
Random random = new Random();
List <DHCPv6PacketHandledEntryDataModel> dhcpv6PacketEntries = new List <DHCPv6PacketHandledEntryDataModel>();
var requestPacketTypes = new[] { DHCPv6PacketTypes.Solicit, DHCPv6PacketTypes.CONFIRM, DHCPv6PacketTypes.DECLINE, DHCPv6PacketTypes.REBIND, DHCPv6PacketTypes.RELEASE, DHCPv6PacketTypes.RENEW, DHCPv6PacketTypes.REQUEST };
for (int i = 0; i < 30_000; i++)
{
var request =
DHCPv6RelayPacket.AsOuterRelay(new IPv6HeaderInformation(IPv6Address.FromString("fe80::1"), IPv6Address.FromString("fe80::2")), true, 2, IPv6Address.FromString("faf::2"), IPv6Address.FromString("fefc::23"),
new DHCPv6PacketOption[] {
new DHCPv6PacketRemoteIdentifierOption((UInt32)random.Next(), GetRandomBytes(random)),
new DHCPv6PacketByteArrayOption(DHCPv6PacketOptionTypes.InterfaceId, GetRandomBytes(random)),
},
DHCPv6RelayPacket.AsInnerRelay(true, 1, IPv6Address.FromString("fe70::2"), IPv6Address.FromString("fecc::23"),
new DHCPv6PacketOption[] {
new DHCPv6PacketByteArrayOption(DHCPv6PacketOptionTypes.InterfaceId, GetRandomBytes(random)),
},
DHCPv6Packet.AsInner(
(UInt16)random.Next(0, UInt16.MaxValue),
random.NextDouble() > 0.3 ? DHCPv6PacketTypes.Solicit : DHCPv6PacketTypes.RELEASE,
new DHCPv6PacketOption[]
{
new DHCPv6PacketIdentifierOption(DHCPv6PacketOptionTypes.ServerIdentifer, new UUIDDUID(Guid.NewGuid())),
new DHCPv6PacketIdentifierOption(DHCPv6PacketOptionTypes.ClientIdentifier, new UUIDDUID(Guid.NewGuid())),
new DHCPv6PacketIdentityAssociationNonTemporaryAddressesOption((UInt32)random.Next()),
})));
var entry = new DHCPv6PacketHandledEntryDataModel
{
Id = Guid.NewGuid(),
Timestamp = start.AddMinutes(random.Next(0, diff)),
ScopeId = Guid.NewGuid(),
RequestType = requestPacketTypes[random.Next(0, requestPacketTypes.Length)],
RequestSize = request.GetSize(),
RequestStream = request.GetAsStream(),
RequestDestination = request.Header.Destionation.ToString(),
RequestSource = request.Header.Source.ToString(),
};
if (random.NextDouble() > 0.8)
{
entry.FilteredBy = "something";
}
else
{
if (random.NextDouble() > 0.8)
{
entry.InvalidRequest = true;
}
else
{
if (random.NextDouble() > 0.5)
{
entry.HandledSuccessfully = true;
entry.ErrorCode = 0;
var response = DHCPv6Packet.AsOuter(
new IPv6HeaderInformation(IPv6Address.FromString("fe80::1"), IPv6Address.FromString("fe80::2")),
(UInt16)random.Next(0, UInt16.MaxValue),
random.NextDouble() > 0.3 ? DHCPv6PacketTypes.REPLY : DHCPv6PacketTypes.ADVERTISE,
new DHCPv6PacketOption[]
{
new DHCPv6PacketIdentifierOption(DHCPv6PacketOptionTypes.ServerIdentifer, new UUIDDUID(Guid.NewGuid())),
new DHCPv6PacketIdentifierOption(DHCPv6PacketOptionTypes.ClientIdentifier, new UUIDDUID(Guid.NewGuid())),
DHCPv6PacketIdentityAssociationNonTemporaryAddressesOption.AsSuccess(
(UInt16)random.Next(0, UInt16.MaxValue), TimeSpan.FromMinutes(random.Next(30, 100)), TimeSpan.FromMinutes(random.Next(30, 100)), IPv6Address.FromString("fe80::100"),
TimeSpan.FromMinutes(random.Next(30, 100)), TimeSpan.FromMinutes(random.Next(30, 100))),
DHCPv6PacketIdentityAssociationPrefixDelegationOption.AsSuccess((UInt32)random.Next(), TimeSpan.FromMinutes(random.Next(30, 100)), TimeSpan.FromMinutes(random.Next(30, 100)),
(Byte)random.Next(30, 68), IPv6Address.FromString("fc:12::0"), TimeSpan.FromMinutes(random.Next(30, 100)), TimeSpan.FromMinutes(random.Next(30, 100))),
new DHCPv6PacketBooleanOption(DHCPv6PacketOptionTypes.Auth, random.NextDouble() > 0.5),
new DHCPv6PacketByteOption(DHCPv6PacketOptionTypes.Preference, (Byte)random.Next(0, 256)),
new DHCPv6PacketTrueOption(DHCPv6PacketOptionTypes.RapitCommit),
new DHCPv6PacketIPAddressOption(DHCPv6PacketOptionTypes.ServerUnicast, IPv6Address.FromString("fd::1")),
new DHCPv6PacketIPAddressListOption(48, new [] { IPv6Address.FromString("2001::1"), IPv6Address.FromString("2001::1") }),
});
entry.ResponseDestination = response.Header.Destionation.ToString();
entry.ResponseSource = response.Header.Source.ToString();
entry.ResponseStream = response.GetAsStream();
entry.ResponseSize = response.GetSize();
entry.ResponseType = random.NextDouble() > 0.3 ? DHCPv6PacketTypes.REPLY : DHCPv6PacketTypes.ADVERTISE;
}
else
{
entry.HandledSuccessfully = false;
entry.ErrorCode = random.Next(0, 5);
}
}
}
entry.SetTimestampDates();
dhcpv6PacketEntries.Add(entry);
}
List <DHCPv4PacketHandledEntryDataModel> dhcpv4PacketEntries = new();
var requestDHCPv4PacketTypes = new[] { DHCPv4MessagesTypes.Discover, DHCPv4MessagesTypes.Decline, DHCPv4MessagesTypes.Inform, DHCPv4MessagesTypes.Release, DHCPv4MessagesTypes.Request };
for (int i = 0; i < 30_000; i++)
{
var hwAddress = new Byte[6];
random.NextBytes(hwAddress);
var option82Value = new Byte[30];
random.NextBytes(option82Value);
var request =
new DHCPv4Packet(new IPv4HeaderInformation(IPv4Address.FromString("192.168.0.1"), IPv4Address.FromString("10.10.10.10")),
hwAddress, (UInt32)random.Next(), IPv4Address.FromString("0.0.0.0"), IPv4Address.FromString("192.168.0.5"), IPv4Address.FromString("0.0.0.0"),
DHCPv4PacketFlags.Unicast,
new DHCPv4PacketParameterRequestListOption(new DHCPv4OptionTypes[] { DHCPv4OptionTypes.NetworkTimeProtocolServers, DHCPv4OptionTypes.DNSServers, DHCPv4OptionTypes.Router, DHCPv4OptionTypes.DomainName }),
new DHCPv4PacketRawByteOption((Byte)DHCPv4OptionTypes.Option82, option82Value)
);
var entry = new DHCPv4PacketHandledEntryDataModel
{
Id = Guid.NewGuid(),
Timestamp = start.AddMinutes(random.Next(0, diff)),
ScopeId = Guid.NewGuid(),
RequestType = requestDHCPv4PacketTypes[random.Next(0, requestDHCPv4PacketTypes.Length)],
RequestSize = request.GetSize(),
RequestStream = request.GetAsStream(),
RequestDestination = request.Header.Destionation.ToString(),
RequestSource = request.Header.Source.ToString(),
};
if (random.NextDouble() > 0.8)
{
entry.FilteredBy = "something";
}
else
{
if (random.NextDouble() > 0.8)
{
entry.InvalidRequest = true;
}
else
{
if (random.NextDouble() > 0.5)
{
entry.HandledSuccessfully = true;
entry.ErrorCode = 0;
var response = new DHCPv4Packet(new IPv4HeaderInformation(IPv4Address.FromString("10.10.10.10"), IPv4Address.FromString("192.168.0.1")),
hwAddress, (UInt32)random.Next(), IPv4Address.FromString("0.0.0.0"), IPv4Address.FromString("192.168.0.5"), IPv4Address.FromString("192.168.0.15"),
DHCPv4PacketFlags.Unicast,
new DHCPv4PacketAddressListOption(DHCPv4OptionTypes.DNSServers, new[] { IPv4Address.FromString("1.1.1.1"), IPv4Address.FromString("8.8.8.8") }),
new DHCPv4PacketAddressOption(DHCPv4OptionTypes.Router, IPv4Address.FromString("192.168.0.253"))
);
entry.ResponseDestination = response.Header.Destionation.ToString();
entry.ResponseSource = response.Header.Source.ToString();
entry.ResponseStream = response.GetAsStream();
entry.ResponseSize = response.GetSize();
entry.ResponseType = random.NextDouble() > 0.3 ? DHCPv4MessagesTypes.Offer : DHCPv4MessagesTypes.Acknowledge;
}
else
{
entry.HandledSuccessfully = false;
entry.ErrorCode = random.Next(0, 5);
}
}
}
entry.SetTimestampDates();
dhcpv4PacketEntries.Add(entry);
}
List <DHCPv6LeaseEntryDataModel> dhcpv6LeaseEntries = new List <DHCPv6LeaseEntryDataModel>();
for (int i = 0; i < 30_000; i++)
{
Byte[] addressBytes = new byte[16];
Byte[] prefixBytes = new byte[16];
random.NextBytes(addressBytes);
random.NextBytes(prefixBytes);
DHCPv6LeaseEntryDataModel entryDataModel = new DHCPv6LeaseEntryDataModel
{
Id = Guid.NewGuid(),
Timestamp = start.AddMinutes(random.Next(0, diff)),
LeaseId = Guid.NewGuid(),
Address = IPv6Address.FromByteArray(addressBytes).ToString(),
EndReason = StatisticsControllerResponses.V1.ReasonToEndLease.Nothing,
ScopeId = Guid.NewGuid(),
Start = start.AddMinutes(random.Next(0, diff - 50)),
};
Int32 leaseDiff = (Int32)(end.AddDays(4) - entryDataModel.Start).TotalMinutes;
entryDataModel.End = entryDataModel.Start.AddMinutes(random.Next(10, leaseDiff));
TimeSpan lifetime = entryDataModel.End - entryDataModel.Start;
TimeSpan renewalTime = lifetime / 2;
TimeSpan rebindingTime = lifetime * (2.0 / 3.0);
entryDataModel.EndOfRenewalTime = entryDataModel.Start + renewalTime;
entryDataModel.EndOfPreferredLifetime = entryDataModel.Start + rebindingTime;
if (random.NextDouble() > 0.5)
{
entryDataModel.Prefix = IPv6Address.FromByteArray(prefixBytes).ToString();
entryDataModel.PrefixLength = (Byte)random.Next(48, 76);
}
dhcpv6LeaseEntries.Add(entryDataModel);
}
List <DHCPv4LeaseEntryDataModel> dhcpv4LeaseEntries = new();
for (int i = 0; i < 30_000; i++)
{
Byte[] addressBytes = new byte[4];
random.NextBytes(addressBytes);
DHCPv4LeaseEntryDataModel entryDataModel = new DHCPv4LeaseEntryDataModel
{
Id = Guid.NewGuid(),
Timestamp = start.AddMinutes(random.Next(0, diff)),
LeaseId = Guid.NewGuid(),
Address = IPv4Address.FromByteArray(addressBytes).ToString(),
EndReason = StatisticsControllerResponses.V1.ReasonToEndLease.Nothing,
ScopeId = Guid.NewGuid(),
Start = start.AddMinutes(random.Next(0, diff - 50)),
};
Int32 leaseDiff = (Int32)(end.AddDays(4) - entryDataModel.Start).TotalMinutes;
entryDataModel.End = entryDataModel.Start.AddMinutes(random.Next(10, leaseDiff));
TimeSpan lifetime = entryDataModel.End - entryDataModel.Start;
TimeSpan renewalTime = lifetime / 2;
TimeSpan rebindingTime = lifetime * (2.0 / 3.0);
entryDataModel.EndOfRenewalTime = entryDataModel.Start + renewalTime;
entryDataModel.EndOfPreferredLifetime = entryDataModel.Start + rebindingTime;
dhcpv4LeaseEntries.Add(entryDataModel);
}
storageContext.AddRange(dhcpv6PacketEntries);
storageContext.AddRange(dhcpv6LeaseEntries);
storageContext.AddRange(dhcpv4PacketEntries);
storageContext.AddRange(dhcpv4LeaseEntries);
storageContext.SaveChanges();
}
}
