public void SimpleTest()
{
Assert.AreEqual <SerialNumber32>(1, 1);
Assert.AreNotEqual <SerialNumber32>(1, 2);
MoreAssert.IsBigger(1, 2);
MoreAssert.IsSmaller(2, 1);
SerialNumber32 serialNumber = 1;
serialNumber = serialNumber.Add(10);
Assert.AreEqual <SerialNumber32>(11, serialNumber);
serialNumber = serialNumber.Add(((uint)1 << 31) - 1);
Assert.AreEqual <SerialNumber32>(2147483658, serialNumber);
MoreAssert.IsSmaller <SerialNumber32>(1, serialNumber);
MoreAssert.IsBigger <SerialNumber32>(20, serialNumber);
serialNumber = serialNumber.Add(((uint)1 << 31) - 1);
Assert.AreEqual <SerialNumber32>(9, serialNumber);
Assert.IsTrue(new SerialNumber32(1) < new SerialNumber32(2));
Assert.IsTrue(new SerialNumber32(2) > new SerialNumber32(1));
// ReSharper disable EqualExpressionComparison
Assert.IsFalse(new SerialNumber32(1) < new SerialNumber32(1));
Assert.IsFalse(new SerialNumber32(1) > new SerialNumber32(1));
// ReSharper restore EqualExpressionComparison
Assert.IsTrue(new SerialNumber32(2) != new SerialNumber32(1));
Assert.IsFalse(new SerialNumber32(1) != new SerialNumber32(0).Add(1));
Assert.IsTrue(new SerialNumber32(2) == new SerialNumber32(1).Add(1));
Assert.IsFalse(new SerialNumber32(1).Equals(1.0));
Assert.AreEqual("1", new SerialNumber32(1).ToString());
}
public void RandomGreTest()
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = new MacAddress("00:01:02:03:04:05"),
Destination = new MacAddress("A0:A1:A2:A3:A4:A5")
};
int seed = new Random().Next();
Console.WriteLine("Seed: " + seed);
Random random = new Random(seed);
for (int i = 0; i != 200; ++i)
{
IpV4Layer ipV4Layer = random.NextIpV4Layer(null);
ipV4Layer.HeaderChecksum = null;
Layer ipLayer = random.NextBool() ? (Layer)ipV4Layer : random.NextIpV6Layer(IpV4Protocol.Gre, false);
GreLayer greLayer = random.NextGreLayer();
PayloadLayer payloadLayer = random.NextPayloadLayer(random.Next(100));
PacketBuilder packetBuilder = new PacketBuilder(ethernetLayer, ipLayer, greLayer, payloadLayer);
Packet packet = packetBuilder.Build(DateTime.Now);
if (greLayer.Checksum == null &&
!new[] { EthernetType.IpV4, EthernetType.IpV6, EthernetType.Arp, EthernetType.VLanTaggedFrame }.Contains(packet.Ethernet.Ip.Gre.ProtocolType))
{
Assert.IsTrue(packet.IsValid, "IsValid, ProtocolType=" + packet.Ethernet.Ip.Gre.ProtocolType);
}
// Ethernet
ethernetLayer.EtherType = ipLayer == ipV4Layer ? EthernetType.IpV4 : EthernetType.IpV6;
Assert.AreEqual(ethernetLayer, packet.Ethernet.ExtractLayer(), "Ethernet Layer");
ethernetLayer.EtherType = EthernetType.None;
// IP.
if (ipLayer == ipV4Layer)
{
// IPv4.
ipV4Layer.Protocol = IpV4Protocol.Gre;
ipV4Layer.HeaderChecksum = ((IpV4Layer)packet.Ethernet.Ip.ExtractLayer()).HeaderChecksum;
Assert.AreEqual(ipV4Layer, packet.Ethernet.Ip.ExtractLayer());
ipV4Layer.HeaderChecksum = null;
Assert.AreEqual(ipV4Layer.Length, packet.Ethernet.IpV4.HeaderLength);
Assert.IsTrue(packet.Ethernet.IpV4.IsHeaderChecksumCorrect);
Assert.AreEqual(ipV4Layer.Length + greLayer.Length + payloadLayer.Length,
packet.Ethernet.Ip.TotalLength);
Assert.AreEqual(IpV4Datagram.DefaultVersion, packet.Ethernet.Ip.Version);
}
else
{
// IPv6.
Assert.AreEqual(ipLayer, packet.Ethernet.Ip.ExtractLayer());
}
// GRE
GreDatagram actualGre = packet.Ethernet.Ip.Gre;
GreLayer actualGreLayer = (GreLayer)actualGre.ExtractLayer();
if (greLayer.ChecksumPresent && greLayer.Checksum == null)
{
Assert.IsTrue(actualGre.IsChecksumCorrect);
greLayer.Checksum = actualGre.Checksum;
}
Assert.AreEqual(greLayer, actualGreLayer, "Layer");
if (actualGreLayer.Key != null)
{
actualGreLayer.SetKey(actualGreLayer.KeyPayloadLength.Value, actualGreLayer.KeyCallId.Value);
}
else
{
Assert.IsNull(actualGreLayer.KeyPayloadLength);
Assert.IsNull(actualGreLayer.KeyCallId);
}
Assert.AreEqual(greLayer, actualGreLayer, "Layer");
if (actualGre.KeyPresent)
{
Assert.AreEqual(greLayer.KeyPayloadLength, actualGre.KeyPayloadLength, "KeyPayloadLength");
Assert.AreEqual(greLayer.KeyCallId, actualGre.KeyCallId, "KeyCallId");
}
Assert.AreNotEqual(random.NextGreLayer(), actualGreLayer, "Not Layer");
Assert.AreEqual(greLayer.Length, actualGre.HeaderLength);
Assert.IsTrue(actualGre.KeyPresent ^ (greLayer.Key == null));
MoreAssert.IsSmaller(8, actualGre.RecursionControl);
MoreAssert.IsSmaller(32, actualGre.FutureUseBits);
Assert.IsTrue(actualGre.RoutingPresent ^ (greLayer.Routing == null && greLayer.RoutingOffset == null));
Assert.IsTrue(actualGre.SequenceNumberPresent ^ (greLayer.SequenceNumber == null));
Assert.IsTrue(!actualGre.StrictSourceRoute || actualGre.RoutingPresent);
if (actualGre.RoutingPresent)
{
Assert.IsNotNull(actualGre.ActiveSourceRouteEntryIndex);
if (actualGre.ActiveSourceRouteEntryIndex < actualGre.Routing.Count)
{
Assert.IsNotNull(actualGre.ActiveSourceRouteEntry);
}
foreach (GreSourceRouteEntry entry in actualGre.Routing)
{
Assert.AreNotEqual(entry, 2);
Assert.AreEqual(entry.GetHashCode(), entry.GetHashCode());
switch (entry.AddressFamily)
{
case GreSourceRouteEntryAddressFamily.AsSourceRoute:
GreSourceRouteEntryAs asEntry = (GreSourceRouteEntryAs)entry;
MoreAssert.IsInRange(0, asEntry.AsNumbers.Count, asEntry.NextAsNumberIndex);
if (asEntry.NextAsNumberIndex != asEntry.AsNumbers.Count)
{
Assert.AreEqual(asEntry.AsNumbers[asEntry.NextAsNumberIndex], asEntry.NextAsNumber);
}
break;
case GreSourceRouteEntryAddressFamily.IpSourceRoute:
GreSourceRouteEntryIp ipEntry = (GreSourceRouteEntryIp)entry;
MoreAssert.IsInRange(0, ipEntry.Addresses.Count, ipEntry.NextAddressIndex);
if (ipEntry.NextAddressIndex != ipEntry.Addresses.Count)
{
Assert.AreEqual(ipEntry.Addresses[ipEntry.NextAddressIndex], ipEntry.NextAddress);
}
break;
default:
GreSourceRouteEntryUnknown unknownEntry = (GreSourceRouteEntryUnknown)entry;
MoreAssert.IsInRange(0, unknownEntry.Data.Length, unknownEntry.PayloadOffset);
break;
}
}
}
else
{
Assert.IsNull(actualGre.ActiveSourceRouteEntry);
}
Assert.IsNotNull(actualGre.Payload);
switch (actualGre.ProtocolType)
{
case EthernetType.IpV4:
Assert.IsNotNull(actualGre.IpV4);
break;
case EthernetType.Arp:
Assert.IsNotNull(actualGre.Arp);
break;
}
}
}
protected override bool CompareField(XElement field, Datagram datagram)
{
IpV6Datagram ipV6Datagram = (IpV6Datagram)datagram;
SkipAuthenticationHeaders(ipV6Datagram);
int optionsIndex = 0;
switch (field.Name())
{
case "ipv6.version":
field.AssertShowDecimal(ipV6Datagram.Version);
foreach (XElement subfield in field.Fields())
{
switch (subfield.Name())
{
case "ip.version":
subfield.AssertShowDecimal(ipV6Datagram.Version);
break;
default:
throw new InvalidOperationException(string.Format("Invalid ipv6 version subfield {0}", subfield.Name()));
}
}
break;
case "ipv6.class":
field.AssertShowDecimal(ipV6Datagram.TrafficClass);
break;
case "ipv6.flow":
field.AssertShowDecimal(ipV6Datagram.FlowLabel);
field.AssertNoFields();
break;
case "ipv6.plen":
field.AssertShowDecimal(ipV6Datagram.PayloadLength);
field.AssertNoFields();
break;
case "ipv6.nxt":
field.AssertShowDecimal((byte)ipV6Datagram.NextHeader);
field.AssertNoFields();
break;
case "ipv6.hlim":
field.AssertShowDecimal(ipV6Datagram.HopLimit);
field.AssertNoFields();
break;
case "ipv6.src":
case "ipv6.src_host":
field.AssertShow(ipV6Datagram.Source.GetWiresharkString());
field.AssertNoFields();
break;
case "ipv6.src_6to4_gw_ipv4":
case "ipv6.src_6to4_sla_id":
case "ipv6.6to4_gw_ipv4":
case "ipv6.6to4_sla_id":
field.AssertNoFields();
break;
case "ipv6.dst":
case "ipv6.dst_host":
field.AssertShow(ipV6Datagram.CurrentDestination.GetWiresharkString());
field.AssertNoFields();
break;
case "ipv6.addr":
case "ipv6.host":
Assert.IsTrue(field.Show() == ipV6Datagram.Source.GetWiresharkString() ||
field.Show() == ipV6Datagram.CurrentDestination.GetWiresharkString());
field.AssertNoFields();
break;
case "ipv6.hop_opt":
if (_currentExtensionHeaderIndex >= ipV6Datagram.ExtensionHeaders.Headers.Count)
{
Assert.IsFalse(ipV6Datagram.ExtensionHeaders.IsValid);
int maxLength = ipV6Datagram.Length - IpV6Datagram.HeaderLength - ipV6Datagram.ExtensionHeaders.BytesLength;
if (field.Fields().Any(subfield => subfield.Name() == "ipv6.opt.length"))
{
int length = int.Parse(field.Fields().First(subfield => subfield.Name() == "ipv6.opt.length").Show());
MoreAssert.IsBigger(maxLength, length);
}
else
{
Assert.AreEqual(6, maxLength);
}
}
else
{
IpV6ExtensionHeaderHopByHopOptions hopByHopOptions =
(IpV6ExtensionHeaderHopByHopOptions)ipV6Datagram.ExtensionHeaders[_currentExtensionHeaderIndex];
IncrementCurrentExtensionHeaderIndex(ipV6Datagram);
CompareOptions(field, ref optionsIndex, ipV6Datagram, hopByHopOptions);
}
break;
case "ipv6.routing_hdr":
if (!ipV6Datagram.IsValid)
{
return(false);
}
IpV6ExtensionHeaderRouting routing = (IpV6ExtensionHeaderRouting)ipV6Datagram.ExtensionHeaders[_currentExtensionHeaderIndex];
IpV6ExtensionHeaderRoutingProtocolLowPowerAndLossyNetworks routingProtocolLowPowerAndLossyNetworks =
routing as IpV6ExtensionHeaderRoutingProtocolLowPowerAndLossyNetworks;
int routingProtocolLowPowerAndLossyNetworksAddressIndex = 0;
IncrementCurrentExtensionHeaderIndex(ipV6Datagram);
int sourceRouteAddressIndex = 0;
foreach (var headerField in field.Fields())
{
switch (headerField.Name())
{
case "":
headerField.AssertNoFields();
ValidateExtensionHeaderUnnamedField(routing, headerField);
break;
case "ipv6.routing_hdr.type":
headerField.AssertNoFields();
headerField.AssertShowDecimal((byte)routing.RoutingType);
break;
case "ipv6.routing_hdr.left":
headerField.AssertNoFields();
headerField.AssertShowDecimal(routing.SegmentsLeft);
break;
case "ipv6.mipv6_home_address":
headerField.AssertNoFields();
IpV6ExtensionHeaderRoutingHomeAddress routingHomeAddress = (IpV6ExtensionHeaderRoutingHomeAddress)routing;
headerField.AssertShow(routingHomeAddress.HomeAddress.ToString("x"));
break;
case "ipv6.routing_hdr.addr":
headerField.AssertNoFields();
IpV6ExtensionHeaderRoutingSourceRoute routingSourceRoute = (IpV6ExtensionHeaderRoutingSourceRoute)routing;
headerField.AssertShow(routingSourceRoute.Addresses[sourceRouteAddressIndex++].ToString("x"));
break;
case "ipv6.routing_hdr.rpl.cmprI":
headerField.AssertNoFields();
headerField.AssertShowDecimal(routingProtocolLowPowerAndLossyNetworks.CommonPrefixLengthForNonLastAddresses);
break;
case "ipv6.routing_hdr.rpl.cmprE":
headerField.AssertNoFields();
headerField.AssertShowDecimal(routingProtocolLowPowerAndLossyNetworks.CommonPrefixLengthForLastAddress);
break;
case "ipv6.routing_hdr.rpl.pad":
headerField.AssertNoFields();
headerField.AssertShowDecimal(routingProtocolLowPowerAndLossyNetworks.PadSize);
break;
case "ipv6.routing_hdr.rpl.reserved":
headerField.AssertNoFields();
headerField.AssertShowDecimal(0);
break;
case "ipv6.routing_hdr.rpl.segments":
if (headerField.Fields().Any())
{
headerField.AssertNumFields(1);
headerField.Fields().First().AssertName("_ws.expert");
}
// TODO: Remove this condition when https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11803 is fixed.
if (routingProtocolLowPowerAndLossyNetworks.Addresses.Count > 0)
{
headerField.AssertShowDecimal(routingProtocolLowPowerAndLossyNetworks.Addresses.Count);
}
break;
case "ipv6.routing_hdr.rpl.address":
headerField.AssertNoFields();
// TODO: Remove this condition when https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11803 is fixed.
if (routingProtocolLowPowerAndLossyNetworks.Addresses.Count > 0)
{
IpV6Address actualAddress =
new IpV6Address(UInt128.Parse(headerField.Value(), NumberStyles.HexNumber, CultureInfo.InvariantCulture));
Assert.AreEqual(routingProtocolLowPowerAndLossyNetworks.Addresses[routingProtocolLowPowerAndLossyNetworksAddressIndex],
actualAddress);
}
break;
case "ipv6.routing_hdr.rpl.full_address":
headerField.AssertNoFields();
// TODO: Uncomment the following code when https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=10673 is fixed.
// // TODO: Remove this condition when https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11803 is fixed.
// if (routingProtocolLowPowerAndLossyNetworks.Addresses.Count > 0)
// {
// IpV6Address actualFullAddress = new IpV6Address(headerField.Show());
//
// IpV6Address destinationAddress = ipV6Datagram.CurrentDestination;
// for (int i = 0; i < _currentExtensionHeaderIndex; ++i)
// {
// IpV6ExtensionHeaderRoutingHomeAddress ipV6ExtensionHeaderRoutingHomeAddress =
// ipV6Datagram.ExtensionHeaders[i] as IpV6ExtensionHeaderRoutingHomeAddress;
// if (ipV6ExtensionHeaderRoutingHomeAddress != null)
// destinationAddress = ipV6ExtensionHeaderRoutingHomeAddress.HomeAddress;
//
// IpV6ExtensionHeaderRoutingSourceRoute ipV6ExtensionHeaderRoutingSourceRoute =
// ipV6Datagram.ExtensionHeaders[i] as IpV6ExtensionHeaderRoutingSourceRoute;
// if (ipV6ExtensionHeaderRoutingSourceRoute != null && ipV6ExtensionHeaderRoutingSourceRoute.Addresses.Any())
// destinationAddress = ipV6ExtensionHeaderRoutingSourceRoute.Addresses.Last();
// }
//
// int commonPrefixLength =
// routingProtocolLowPowerAndLossyNetworksAddressIndex == routingProtocolLowPowerAndLossyNetworks.Addresses.Count - 1
// ? routingProtocolLowPowerAndLossyNetworks.CommonPrefixLengthForLastAddress
// : routingProtocolLowPowerAndLossyNetworks.CommonPrefixLengthForNonLastAddresses;
//
// byte[] destinationAddressBytes = new byte[IpV6Address.SizeOf];
// destinationAddressBytes.Write(0, destinationAddress, Endianity.Big);
//
// byte[] routingAddressBytes = new byte[IpV6Address.SizeOf];
// routingAddressBytes.Write(0, routingProtocolLowPowerAndLossyNetworks.Addresses[routingProtocolLowPowerAndLossyNetworksAddressIndex], Endianity.Big);
//
// byte[] fullAddressBytes = destinationAddressBytes.Subsegment(0, commonPrefixLength).Concat(routingAddressBytes.Subsegment(commonPrefixLength, IpV6Address.SizeOf - commonPrefixLength)).ToArray();
// IpV6Address expectedFullAddress = fullAddressBytes.ReadIpV6Address(0, Endianity.Big);
//
// Assert.AreEqual(expectedFullAddress, actualFullAddress);
// }
++routingProtocolLowPowerAndLossyNetworksAddressIndex;
break;
default:
throw new InvalidOperationException("Invalid IPv6 routing source route field " + headerField.Name());
}
}
break;
case "ipv6.dst_opt":
if (_currentExtensionHeaderIndex >= ipV6Datagram.ExtensionHeaders.Headers.Count)
{
int expectedExtensionHeaderLength = (int.Parse(field.Fields().Skip(1).First().Value(), NumberStyles.HexNumber) + 1) * 8;
int actualMaxPossibleLength = ipV6Datagram.RealPayloadLength -
ipV6Datagram.ExtensionHeaders.Take(_currentExtensionHeaderIndex).Sum(
extensionHeader => extensionHeader.Length);
MoreAssert.IsSmaller(expectedExtensionHeaderLength, actualMaxPossibleLength);
return(false);
}
IpV6ExtensionHeaderDestinationOptions destinationOptions = (IpV6ExtensionHeaderDestinationOptions)ipV6Datagram.ExtensionHeaders[_currentExtensionHeaderIndex];
IncrementCurrentExtensionHeaderIndex(ipV6Datagram);
CompareOptions(field, ref optionsIndex, ipV6Datagram, destinationOptions);
break;
case "ipv6.shim6":
// TODO: Implement Shim6.
IpV4Protocol nextHeader = _currentExtensionHeaderIndex > 0
? ipV6Datagram.ExtensionHeaders[_currentExtensionHeaderIndex - 1].NextHeader.Value
: ipV6Datagram.NextHeader;
Assert.IsTrue(nextHeader == IpV4Protocol.Shim6);
break;
case "ipv6.unknown_hdr":
Assert.AreEqual(ipV6Datagram.ExtensionHeaders.Count(), _currentExtensionHeaderIndex);
// TODO: Fix according to https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=9996
return(false);
case "ipv6.src_sa_mac":
case "ipv6.dst_sa_mac":
case "ipv6.sa_mac":
case "ipv6.dst_6to4_gw_ipv4":
case "ipv6.dst_6to4_sla_id":
// TODO: Understand how these are calculated.
break;
case "":
switch (field.Show())
{
case "Fragmentation Header":
if (_currentExtensionHeaderIndex >= ipV6Datagram.ExtensionHeaders.Headers.Count && !ipV6Datagram.IsValid)
{
return(false);
}
IpV6ExtensionHeaderFragmentData fragmentData =
(IpV6ExtensionHeaderFragmentData)ipV6Datagram.ExtensionHeaders[_currentExtensionHeaderIndex];
IncrementCurrentExtensionHeaderIndex(ipV6Datagram);
foreach (var headerField in field.Fields())
{
switch (headerField.Name())
{
case "ipv6.fragment.nxt":
headerField.AssertValue((byte)fragmentData.NextHeader.Value);
break;
case "ipv6.fragment.offset":
headerField.AssertShowDecimal(fragmentData.FragmentOffset);
break;
case "ipv6.fragment.more":
headerField.AssertShowDecimal(fragmentData.MoreFragments);
break;
case "ipv6.fragment.id":
headerField.AssertShowDecimal(fragmentData.Identification);
break;
case "ipv6.fragment.reserved_octet":
case "ipv6.fragment.reserved_bits":
headerField.AssertShowDecimal(0);
break;
default:
throw new InvalidOperationException("Invalid ipv6 fragmentation field " + headerField.Name());
}
}
break;
default:
throw new InvalidOperationException(string.Format("Invalid ipv6 field {0}", field.Show()));
}
break;
default:
throw new InvalidOperationException(string.Format("Invalid ipv6 field {0}", field.Name()));
}
return(true);
}