/// <summary>
/// Parses an option from the given data.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <returns>The option if parsing was successful, null otherwise.</returns>
public IpV6Option CreateInstance(DataSegment data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
if (data.Length < OptionDataMinimumLength)
{
return(null);
}
int sourceEndpointIdentifierLength = data[Offset.SourceEndpointIdentifierLength];
int destinationEndpointIdentifierLength = data[Offset.DestinationEndpointIdentifierLength];
if (data.Length != OptionDataMinimumLength + sourceEndpointIdentifierLength + destinationEndpointIdentifierLength)
{
return(null);
}
DataSegment sourceEndpointIdentifier = data.Subsegment(Offset.SourceEndpointIdentifier, sourceEndpointIdentifierLength);
int destinationEndpointIdentifierOffset = Offset.SourceEndpointIdentifier + sourceEndpointIdentifierLength;
DataSegment destinationEndpointIdentifier = data.Subsegment(destinationEndpointIdentifierOffset, destinationEndpointIdentifierLength);
return(new IpV6OptionEndpointIdentification(sourceEndpointIdentifier, destinationEndpointIdentifier));
}
internal static DnsOptions Read(DataSegment data)
{
List <DnsOption> options = new List <DnsOption>();
while (data.Length != 0)
{
if (data.Length < DnsOption.MinimumLength)
{
return(null);
}
DnsOptionCode code = (DnsOptionCode)data.ReadUShort(0, Endianity.Big);
ushort optionDataLength = data.ReadUShort(sizeof(ushort), Endianity.Big);
int optionLength = DnsOption.MinimumLength + optionDataLength;
if (data.Length < optionLength)
{
return(null);
}
DnsOption option = DnsOption.CreateInstance(code, data.Subsegment(DnsOption.MinimumLength, optionDataLength));
if (option == null)
{
return(null);
}
options.Add(option);
data = data.Subsegment(optionLength, data.Length - optionLength);
}
return(new DnsOptions(options));
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
if (data.Length < 3)
{
return((DnsResourceData)null);
}
int length1 = (int)data[0];
if (data.Length < length1 + 3)
{
return((DnsResourceData)null);
}
string longitude = data.Subsegment(1, length1).Decode(Encoding.ASCII);
data = data.Subsegment(length1 + 1, data.Length - length1 - 1);
int length2 = (int)data[0];
if (data.Length < length2 + 2)
{
return((DnsResourceData)null);
}
string latitude = data.Subsegment(1, length2).Decode(Encoding.ASCII);
data = data.Subsegment(length2 + 1, data.Length - length2 - 1);
int length3 = (int)data[0];
if (data.Length != length3 + 1)
{
return((DnsResourceData)null);
}
string altitude = data.Subsegment(1, length3).Decode(Encoding.ASCII);
return((DnsResourceData) new DnsResourceDataGeographicalPosition(longitude, latitude, altitude));
}
internal static DnsOptions Read(DataSegment data)
{
List <DnsOption> list = new List <DnsOption>();
int offset;
for (; data.Length != 0; data = data.Subsegment(offset, data.Length - offset))
{
if (data.Length < 4)
{
return((DnsOptions)null);
}
DnsOptionCode code = (DnsOptionCode)data.ReadUShort(0, Endianity.Big);
ushort num = data.ReadUShort(2, Endianity.Big);
offset = 4 + (int)num;
if (data.Length < offset)
{
return((DnsOptions)null);
}
DnsOption instance = DnsOption.CreateInstance(code, data.Subsegment(4, (int)num));
if (instance == null)
{
return((DnsOptions)null);
}
list.Add(instance);
}
return(new DnsOptions((IList <DnsOption>)list));
}
internal override IpV6AccessNetworkIdentifierSubOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
{
return(null);
}
bool isNetworkNameUtf8 = data.ReadBool(Offset.IsNetworkNameUtf8, Mask.IsNetworkNameUtf8);
byte networkNameLength = data[Offset.NetworkNameLength];
if (data.Length < OptionDataMinimumLength + networkNameLength)
{
return(null);
}
DataSegment networkName = data.Subsegment(Offset.NetworkName, networkNameLength);
int accessPointNameLengthOffset = Offset.NetworkName + networkNameLength;
byte accessPointNameLength = data[accessPointNameLengthOffset];
if (data.Length != OptionDataMinimumLength + networkNameLength + accessPointNameLength)
{
return(null);
}
int accessPointNameOffset = accessPointNameLengthOffset + sizeof(byte);
DataSegment accessPointName = data.Subsegment(accessPointNameOffset, accessPointNameLength);
return(new IpV6AccessNetworkIdentifierSubOptionNetworkIdentifier(isNetworkNameUtf8, networkName, accessPointName));
}
public DnsResourceDataDelegationSigner(ushort keyTag, DnsAlgorithm algorithm, DnsDigestType digestType, DataSegment digest)
{
if (digest == null)
{
throw new ArgumentNullException("digest");
}
this.KeyTag = keyTag;
this.Algorithm = algorithm;
this.DigestType = digestType;
int val2;
switch (this.DigestType)
{
case DnsDigestType.Sha1:
val2 = 20;
break;
case DnsDigestType.Sha256:
val2 = 32;
break;
default:
val2 = int.MaxValue;
break;
}
this.Digest = digest.Subsegment(0, Math.Min(digest.Length, val2));
this.ExtraDigest = digest.Subsegment(this.Digest.Length, digest.Length - this.Digest.Length);
}
public NTLMSSP_CHALLENGE_MESSAGE(DataSegment commandDataArg) : base(commandDataArg)
{
var packetDataArray = commandDataArg.ToArray();
TargetNameLen = packetDataArray.ReadUShort(12, Endianity.Small);
TargetNameMaxLen = packetDataArray.ReadUShort(14, Endianity.Small);
TargetNameBufferOffset = packetDataArray.ReadUInt(16, Endianity.Small);
NegotiateFlags = packetDataArray.ReadUInt(20, Endianity.Small);
ServerChallenge = commandDataArg.Subsegment(24, 8);// packetDataArray.ReadULong(24, Endianity.Big);
ReservedField1 = packetDataArray.ReadULong(32, Endianity.Small);
TargetInfoLen = packetDataArray.ReadUShort(40, Endianity.Small);
TargetInfoMaxLen = packetDataArray.ReadUShort(42, Endianity.Small);
TargetInfoBufferOffset = packetDataArray.ReadUInt(44, Endianity.Small);
Version = packetDataArray.ReadULong(48, Endianity.Big);
Payload = commandDataArg.Subsegment(56, (commandDataArg.Length - 56));
var payloadDataArray = Payload.ToArray();
if (TargetNameLen > 0 && (TargetNameBufferOffset + TargetNameLen) < packetDataArray.Length)
{
var TargetNameByteArray = packetDataArray.Subsegment(Convert.ToInt32(TargetNameBufferOffset), TargetNameLen).ToArray();
TargetName = Encoding.Unicode.GetString(TargetNameByteArray, 0, TargetNameByteArray.Length);
}
if (TargetInfoLen > 0 && (TargetInfoBufferOffset + TargetInfoLen) < packetDataArray.Length)
{
ParseAttributeValuePairs(packetDataArray.Subsegment(Convert.ToInt32(TargetInfoBufferOffset), TargetInfoLen));
}
}
/// <summary>
/// Constructs an instance out of the key tag, algorithm, digest type and digest fields.
/// </summary>
/// <param name="keyTag">
/// Lists the key tag of the DNSKEY RR referred to by the DS record.
/// The Key Tag used by the DS RR is identical to the Key Tag used by RRSIG RRs.
/// Calculated as specified in RFC 2535.
/// </param>
/// <param name="algorithm">Algorithm must be allowed to sign DNS data.</param>
/// <param name="digestType">An identifier for the digest algorithm used.</param>
/// <param name="digest">
/// Calculated over the canonical name of the delegated domain name followed by the whole RDATA of the KEY record (all four fields).
/// digest = hash(canonical FQDN on KEY RR | KEY_RR_rdata)
/// KEY_RR_rdata = Flags | Protocol | Algorithm | Public Key
/// The size of the digest may vary depending on the digest type.
/// </param>
public DnsResourceDataDelegationSigner(ushort keyTag, DnsAlgorithm algorithm, DnsDigestType digestType, DataSegment digest)
{
if (digest == null)
{
throw new ArgumentNullException("digest");
}
KeyTag = keyTag;
Algorithm = algorithm;
DigestType = digestType;
int maxDigestLength;
switch (DigestType)
{
case DnsDigestType.Sha1:
maxDigestLength = 20;
break;
case DnsDigestType.Sha256:
maxDigestLength = 32;
break;
default:
maxDigestLength = int.MaxValue;
break;
}
Digest = digest.Subsegment(0, Math.Min(digest.Length, maxDigestLength));
ExtraDigest = digest.Subsegment(Digest.Length, digest.Length - Digest.Length);
}
internal override IpV6Option CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
int sourceEndpointIdentifierLength = data[Offset.SourceEndpointIdentifierLength];
int destinationEndpointIdentifierLength = data[Offset.DestinationEndpointIdentifierLength];
if (data.Length != OptionDataMinimumLength + sourceEndpointIdentifierLength + destinationEndpointIdentifierLength)
return null;
DataSegment sourceEndpointIdentifier = data.Subsegment(Offset.SourceEndpointIdentifier, sourceEndpointIdentifierLength);
int destinationEndpointIdentifierOffset = Offset.SourceEndpointIdentifier + sourceEndpointIdentifierLength;
DataSegment destinationEndpointIdentifier = data.Subsegment(destinationEndpointIdentifierOffset, destinationEndpointIdentifierLength);
return new IpV6OptionEndpointIdentification(sourceEndpointIdentifier, destinationEndpointIdentifier);
}
internal static IpV6ExtensionHeaderMobilityHomeAgentSwitchMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
byte numberOfAddresses = messageData[MessageDataOffset.NumberOfAddresses];
int homeAgentAddressesSize = numberOfAddresses * IpV6Address.SizeOf;
if (messageData.Length < MinimumMessageDataLength + homeAgentAddressesSize)
{
return(null);
}
IpV6Address[] homeAgentAddresses = new IpV6Address[numberOfAddresses];
for (int i = 0; i != numberOfAddresses; ++i)
{
homeAgentAddresses[i] = messageData.ReadIpV6Address(MessageDataOffset.HomeAgentAddresses + i * IpV6Address.SizeOf, Endianity.Big);
}
int optionsOffset = MessageDataOffset.HomeAgentAddresses + homeAgentAddressesSize;
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(optionsOffset, messageData.Length - optionsOffset));
return(new IpV6ExtensionHeaderMobilityHomeAgentSwitchMessage(nextHeader, checksum, homeAgentAddresses, options));
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
if (data.Length < ConstantPartLength)
{
return(null);
}
bool authenticationProhibited = data.ReadBool(Offset.AuthenticationProhibited, Mask.AuthenticationProhibited);
bool confidentialityProhibited = data.ReadBool(Offset.ConfidentialityProhibited, Mask.ConfidentialityProhibited);
bool experimental = data.ReadBool(Offset.Experimental, Mask.Experimental);
bool isFlagsExtension = data.ReadBool(Offset.IsFlagsExtension, Mask.IsFlagsExtension);
bool userAssociated = data.ReadBool(Offset.UserAssociated, Mask.UserAssociated);
bool ipSec = data.ReadBool(Offset.IpSec, Mask.IpSec);
bool email = data.ReadBool(Offset.Email, Mask.Email);
DnsKeyNameType nameType = (DnsKeyNameType)(data[Offset.NameType] & Mask.NameType);
DnsKeySignatoryAttributes signatory = (DnsKeySignatoryAttributes)(data[Offset.Signatory] & Mask.Signatory);
DnsKeyProtocol protocol = (DnsKeyProtocol)data[Offset.Protocol];
DnsAlgorithm algorithm = (DnsAlgorithm)data[Offset.Algorithm];
ushort? flagsExtension = (isFlagsExtension ? ((ushort?)data.ReadUShort(Offset.FlagsExtension, Endianity.Big)) : null);
int publicKeyOffset = Offset.FlagsExtension + (isFlagsExtension ? sizeof(ushort) : 0);
DataSegment publicKey = data.Subsegment(publicKeyOffset, data.Length - publicKeyOffset);
return(new DnsResourceDataKey(authenticationProhibited, confidentialityProhibited, experimental, userAssociated, ipSec, email, nameType, signatory,
protocol, algorithm, flagsExtension, publicKey));
}
private void ParseSecurityBuffer()
{
if (securityBuffer == null)
{
return;
}
if (securityBuffer.Length <= 8)
{
return;
}
var packetDataArray = securityBuffer.ToArray();
int newOffset = packetDataArray.Find(0, packetDataArray.Length, NTLMSSPstring);
if (newOffset < packetDataArray.Length)
{
NTLMSSPData = securityBuffer.Subsegment(newOffset, (packetDataArray.Length - newOffset));
var NTLMSSPPacketType = NTLMSSPData.ToArray().ReadUInt(8, Endianity.Small);
if (NTLMSSPPacketType == 0x2)
{
NTLMSSPMessage = new NTLMSSP_CHALLENGE_MESSAGE(NTLMSSPData);
}
else if (NTLMSSPPacketType == 0x3)
{
NTLMSSPMessage = new NTLMSSP_AUTHENTICATE_MESSAGE(NTLMSSPData);
}
}
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
DnsSecNSec3HashAlgorithm hashAlgorithm;
DnsSecNSec3Flags flags;
ushort iterations;
DataSegment salt;
if (!DnsResourceDataNextDomainSecure3Base.TryReadParameters(data, out hashAlgorithm, out flags, out iterations, out salt))
{
return((DnsResourceData)null);
}
int parametersLength = DnsResourceDataNextDomainSecure3Base.GetParametersLength(salt.Length);
if (data.Length - parametersLength < 1)
{
return((DnsResourceData)null);
}
int offset = parametersLength + 1;
int length = (int)data[parametersLength];
if (data.Length - offset < length)
{
return((DnsResourceData)null);
}
DataSegment nextHashedOwnerName = data.Subsegment(offset, length);
int num = offset + length;
DnsTypeBitmaps instance = DnsTypeBitmaps.CreateInstance(data.Buffer, data.StartOffset + num, data.Length - num);
if (instance == null)
{
return((DnsResourceData)null);
}
return((DnsResourceData) new DnsResourceDataNextDomainSecure3(hashAlgorithm, flags, iterations, salt, nextHashedOwnerName, instance));
}
internal static IpV6ExtensionHeaderMobilityBindingRevocationMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
IpV6MobilityBindingRevocationType bindingRevocationType = (IpV6MobilityBindingRevocationType)messageData[MessageDataOffset.BindingRevocationType];
byte revocationTriggerOrStatus = messageData[MessageDataOffset.RevocationTriggerOrStatus];
ushort sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
bool proxyBinding = messageData.ReadBool(MessageDataOffset.ProxyBinding, MessageDataMask.ProxyBinding);
bool ipV4HomeAddressBindingOnly = messageData.ReadBool(MessageDataOffset.IpV4HomeAddressBindingOnly, MessageDataMask.IpV4HomeAddressBindingOnly);
bool global = messageData.ReadBool(MessageDataOffset.Global, MessageDataMask.Global);
IpV6MobilityOptions options =
new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
switch (bindingRevocationType)
{
case IpV6MobilityBindingRevocationType.BindingRevocationIndication:
return(new IpV6ExtensionHeaderMobilityBindingRevocationIndicationMessage(nextHeader, checksum, (Ipv6MobilityBindingRevocationTrigger)revocationTriggerOrStatus, sequenceNumber,
proxyBinding, ipV4HomeAddressBindingOnly, global, options));
case IpV6MobilityBindingRevocationType.BindingRevocationAcknowledgement:
return(new IpV6ExtensionHeaderMobilityBindingRevocationAcknowledgementMessage(nextHeader, checksum,
(Ipv6MobilityBindingRevocationStatus)revocationTriggerOrStatus,
sequenceNumber, proxyBinding, ipV4HomeAddressBindingOnly,
global, options));
default:
return(null);
}
}
internal static IpV6ExtensionHeaderRouting ParseData(IpV4Protocol nextHeader, DataSegment data)
{
if (data.Length < DataMinimumLength)
return null;
IpV6RoutingType routingType = (IpV6RoutingType)data[DataOffset.RoutingType];
byte segmentsLeft = data[DataOffset.SegmentsLeft];
DataSegment routingData = data.Subsegment(DataOffset.TypeSpecificData, data.Length - DataOffset.TypeSpecificData);
switch (routingType)
{
case IpV6RoutingType.SourceRoute:
return IpV6ExtensionHeaderRoutingSourceRoute.ParseRoutingData(nextHeader, segmentsLeft, routingData);
case IpV6RoutingType.Nimrod:
// Unused.
return null;
case IpV6RoutingType.Type2RoutingHeader:
return IpV6ExtensionHeaderRoutingHomeAddress.ParseRoutingData(nextHeader, segmentsLeft, routingData);
case IpV6RoutingType.RplSourceRouteHeader:
return IpV6ExtensionHeaderRoutingRpl.ParseRoutingData(nextHeader, segmentsLeft, routingData);
default:
return null;
}
}
private static IpV6ExtensionHeader CreateStandardInstance(IpV4Protocol nextHeader, DataSegment extensionHeaderData, out int numBytesRead)
{
numBytesRead = 0;
if (extensionHeaderData.Length < MinimumLength)
return null;
IpV4Protocol nextNextHeader = (IpV4Protocol)extensionHeaderData[Offset.NextHeader];
int length = (extensionHeaderData[Offset.HeaderExtensionLength] + 1) * 8;
if (extensionHeaderData.Length < length)
return null;
DataSegment data = extensionHeaderData.Subsegment(Offset.Data, length - Offset.Data);
numBytesRead = data.Length;
switch (nextHeader)
{
case IpV4Protocol.IpV6HopByHopOption: // 0
return IpV6ExtensionHeaderHopByHopOptions.ParseData(nextNextHeader, data);
case IpV4Protocol.IpV6Route: // 43
return IpV6ExtensionHeaderRouting.ParseData(nextNextHeader, data);
case IpV4Protocol.FragmentHeaderForIpV6: // 44
return IpV6ExtensionHeaderFragmentData.ParseData(nextNextHeader, data);
case IpV4Protocol.IpV6Opts: // 60
return IpV6ExtensionHeaderDestinationOptions.ParseData(nextNextHeader, data);
case IpV4Protocol.MobilityHeader: // 135
return IpV6ExtensionHeaderMobility.ParseData(nextNextHeader, data);
default:
throw new InvalidOperationException("Invalid nextHeader value" + nextHeader);
}
}
internal static bool TryReadParameters(DataSegment data, out DnsSecNSec3HashAlgorithm hashAlgorithm, out DnsSecNSec3Flags flags, out ushort iterations, out DataSegment salt)
{
if (data.Length < ConstantPartLength)
{
hashAlgorithm = DnsSecNSec3HashAlgorithm.Sha1;
flags = DnsSecNSec3Flags.None;
iterations = 0;
salt = null;
return(false);
}
hashAlgorithm = (DnsSecNSec3HashAlgorithm)data[Offset.HashAlgorithm];
flags = (DnsSecNSec3Flags)data[Offset.Flags];
iterations = data.ReadUShort(Offset.Iterations, Endianity.Big);
int saltLength = data[Offset.SaltLength];
if (data.Length - Offset.Salt < saltLength)
{
salt = null;
return(false);
}
salt = data.Subsegment(Offset.Salt, saltLength);
return(true);
}
private void ParseCommandData()
{
if (commandData == null)
{
return;
}
if (commandData.Length <= 8)
{
return;
}
var packetDataArray = commandData.ToArray();
StructureSize = packetDataArray.ReadUShort(SESSION_SETUP_Response_Offsets.StructureSize, Endianity.Small);
try
{
SessionFlags = (SESSION_SETUP_Response_Flag_Names)packetDataArray.ReadUShort(SESSION_SETUP_Response_Offsets.SessionFlags, Endianity.Small);
}
catch
{
SessionFlags = SESSION_SETUP_Response_Flag_Names.SMB2_SESSION_UNKNOWN;
}
SecurityBufferOffset = packetDataArray.ReadUShort(SESSION_SETUP_Response_Offsets.SecurityBufferOffset, Endianity.Small);
SecurityBufferLength = packetDataArray.ReadUShort(SESSION_SETUP_Response_Offsets.SecurityBufferLength, Endianity.Small);
SecurityBuffer = commandData.Subsegment(SESSION_SETUP_Response_Offsets.Buffer, (commandData.Length - SESSION_SETUP_Response_Offsets.Buffer));
}
internal static bool ParseMessageDataToFields(DataSegment messageData, out ushort sequenceNumber,
out bool acknowledge, out bool homeRegistration, out bool linkLocalAddressCompatibility,
out bool keyManagementMobilityCapability, out ushort lifetime, out IpV6MobilityOptions options)
{
if (messageData.Length < MinimumMessageDataLength)
{
sequenceNumber = 0;
acknowledge = false;
homeRegistration = false;
linkLocalAddressCompatibility = false;
keyManagementMobilityCapability = false;
lifetime = 0;
options = null;
return(false);
}
sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
acknowledge = messageData.ReadBool(MessageDataOffset.Acknowledge, MessageDataMask.Acknowledge);
homeRegistration = messageData.ReadBool(MessageDataOffset.HomeRegistration, MessageDataMask.HomeRegistration);
linkLocalAddressCompatibility = messageData.ReadBool(MessageDataOffset.LinkLocalAddressCompatibility, MessageDataMask.LinkLocalAddressCompatibility);
keyManagementMobilityCapability = messageData.ReadBool(MessageDataOffset.KeyManagementMobilityCapability,
MessageDataMask.KeyManagementMobilityCapability);
lifetime = messageData.ReadUShort(MessageDataOffset.Lifetime, Endianity.Big);
options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(true);
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
List <IpV6MobilityOptionContextRequestEntry> requests = new List <IpV6MobilityOptionContextRequestEntry>();
int offset = Offset.Requests;
while (data.Length > offset)
{
byte requestType = data[offset++];
if (offset >= data.Length)
{
return(null);
}
byte requestLength = data[offset++];
if (offset + requestLength > data.Length)
{
return(null);
}
DataSegment requestOption = data.Subsegment(offset, requestLength);
offset += requestLength;
requests.Add(new IpV6MobilityOptionContextRequestEntry(requestType, requestOption));
}
return(new IpV6MobilityOptionContextRequest(requests));
}
internal static IpV6ExtensionHeaderRouting ParseData(IpV4Protocol nextHeader, DataSegment data)
{
if (data.Length < DataMinimumLength)
{
return(null);
}
IpV6RoutingType routingType = (IpV6RoutingType)data[DataOffset.RoutingType];
byte segmentsLeft = data[DataOffset.SegmentsLeft];
DataSegment routingData = data.Subsegment(DataOffset.TypeSpecificData, data.Length - DataOffset.TypeSpecificData);
switch (routingType)
{
case IpV6RoutingType.SourceRoute:
return(IpV6ExtensionHeaderRoutingSourceRoute.ParseRoutingData(nextHeader, segmentsLeft, routingData));
case IpV6RoutingType.Nimrod:
// Unused.
return(null);
case IpV6RoutingType.Type2RoutingHeader:
return(IpV6ExtensionHeaderRoutingHomeAddress.ParseRoutingData(nextHeader, segmentsLeft, routingData));
case IpV6RoutingType.RoutingProtocolLowPowerAndLossyNetworksSourceRouteHeader:
return(IpV6ExtensionHeaderRoutingProtocolLowPowerAndLossyNetworks.ParseRoutingData(nextHeader, segmentsLeft, routingData));
default:
return(null);
}
}
/// <summary>
/// Parses an option from the given data.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <returns>The option if parsing was successful, null otherwise.</returns>
public IpV6Option CreateInstance(DataSegment data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
if (data.Length < OptionDataMinimumLength)
{
return(null);
}
IpV6CalipsoDomainOfInterpretation domainOfInterpretation = (IpV6CalipsoDomainOfInterpretation)data.ReadUInt(Offset.DomainOfInterpretation,
Endianity.Big);
byte compartmentLength = data[Offset.CompartmentLength];
int compartmentLengthInBytes = compartmentLength * sizeof(int);
if (OptionDataMinimumLength + compartmentLengthInBytes > data.Length)
{
return(null);
}
byte sensitivityLevel = data[Offset.SensitivityLevel];
ushort checksum = data.ReadUShort(Offset.Checksum, Endianity.Big);
DataSegment compartmentBitmap = data.Subsegment(Offset.CompartmentBitmap, compartmentLengthInBytes);
return(new IpV6OptionCalipso(domainOfInterpretation, sensitivityLevel, checksum, compartmentBitmap));
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
DnsFingerprintPublicKeyAlgorithm algorithm = (DnsFingerprintPublicKeyAlgorithm)data[Offset.Algorithm];
DnsFingerprintType fingerprintType = (DnsFingerprintType)data[Offset.FingerprintType];
DataSegment fingerprint = data.Subsegment(Offset.Fingerprint, data.Length - ConstPartLength);
return(new DnsResourceDataSshFingerprint(algorithm, fingerprintType, fingerprint));
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
DataSegment linkLayerIdentifier = data.Subsegment(Offset.LinkLayerIdentifier, data.Length - Offset.LinkLayerIdentifier);
return new IpV6MobilityOptionMobileNodeLinkLayerIdentifier(linkLayerIdentifier);
}
internal static IpV6ExtensionHeaderMobilityFastNeighborAdvertisement ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
return null;
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return new IpV6ExtensionHeaderMobilityFastNeighborAdvertisement(nextHeader, checksum, options);
}
internal override IpV6FlowIdentificationSubOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
IpV6FlowIdentificationTrafficSelectorFormat trafficSelectorFormat = (IpV6FlowIdentificationTrafficSelectorFormat)data[Offset.TrafficSelectorFormat];
DataSegment trafficSelector = data.Subsegment(Offset.TrafficSelector, data.Length - Offset.TrafficSelector);
return new IpV6FlowIdentificationSubOptionTrafficSelector(trafficSelectorFormat, trafficSelector);
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
ushort keyTag = data.ReadUShort(Offset.KeyTag, Endianity.Big);
DnsAlgorithm algorithm = (DnsAlgorithm)data[Offset.Algorithm];
DnsDigestType digestType = (DnsDigestType)data[Offset.DigestType];
DataSegment digest = data.Subsegment(Offset.Digest, data.Length - ConstPartLength);
return(new DnsResourceDataDelegationSigner(keyTag, algorithm, digestType, digest));
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
uint vendorId = data.ReadUInt(Offset.VendorId, Endianity.Big);
byte subType = data[Offset.SubType];
DataSegment vendorSpecificData = data.Subsegment(Offset.Data, data.Length - Offset.Data);
return new IpV6MobilityOptionVendorSpecific(vendorId, subType, vendorSpecificData);
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
if (data.Length < 2)
{
return((DnsResourceData)null);
}
DnsCertificationAuthorityAuthorizationFlags flags = (DnsCertificationAuthorityAuthorizationFlags)data[0];
byte num = data[1];
int offset = 2 + (int)num;
if (data.Length < offset)
{
return((DnsResourceData)null);
}
DataSegment tag = data.Subsegment(2, (int)num);
DataSegment dataSegment = data.Subsegment(offset, data.Length - offset);
return((DnsResourceData) new DnsResourceDataCertificationAuthorityAuthorization(flags, tag, dataSegment));
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
IpV6MobilityLinkLayerAddressCode code = (IpV6MobilityLinkLayerAddressCode)data[Offset.OptionCode];
DataSegment linkLayerAddress = data.Subsegment(Offset.LinkLayerAddress, data.Length - Offset.LinkLayerAddress);
return new IpV6MobilityOptionLinkLayerAddress(code, linkLayerAddress);
}
internal override IpV6AccessNetworkIdentifierSubOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
IpV6AccessNetworkIdentifierOperatorIdentifierType identifierType = (IpV6AccessNetworkIdentifierOperatorIdentifierType)data[Offset.IdentifierType];
DataSegment identifier = data.Subsegment(Offset.Identifier, data.Length - Offset.Identifier);
return new IpV6AccessNetworkIdentifierSubOptionOperatorIdentifier(identifierType, identifier);
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
if (data.Length < ConstantPartLength)
{
return(null);
}
DnsCertificationAuthorityAuthorizationFlags flags = (DnsCertificationAuthorityAuthorizationFlags)data[Offset.Flags];
byte tagLength = data[Offset.TagLength];
int valueOffset = ConstantPartLength + tagLength;
if (data.Length < valueOffset)
{
return(null);
}
DataSegment tag = data.Subsegment(Offset.Tag, tagLength);
DataSegment value = data.Subsegment(valueOffset, data.Length - valueOffset);
return(new DnsResourceDataCertificationAuthorityAuthorization(flags, tag, value));
}
internal static IpV6ExtensionHeaderMobilityBindingRefreshRequest ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(new IpV6ExtensionHeaderMobilityBindingRefreshRequest(nextHeader, checksum, options));
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
IpV6AuthenticationSubtype subtype = (IpV6AuthenticationSubtype)data[Offset.Subtype];
uint mobilitySecurityParameterIndex = data.ReadUInt(Offset.MobilitySecurityParameterIndex, Endianity.Big);
DataSegment authenticationData = data.Subsegment(Offset.AuthenticationData, data.Length - Offset.AuthenticationData);
return new IpV6MobilityOptionAuthentication(subtype, mobilitySecurityParameterIndex, authenticationData);
}
internal static DataSegment ReadString(DataSegment data, ref int offset)
{
if (data.Length <= offset)
return null;
int stringLength = data[offset++];
if (data.Length < offset + stringLength)
return null;
DataSegment str = data.Subsegment(ref offset, stringLength);
return str;
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
{
return(null);
}
DataSegment linkLayerIdentifier = data.Subsegment(Offset.LinkLayerIdentifier, data.Length - Offset.LinkLayerIdentifier);
return(new IpV6MobilityOptionMobileNodeLinkLayerIdentifier(linkLayerIdentifier));
}
internal override IpV6FlowIdentificationSubOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
{
return(null);
}
IpV6FlowIdentificationTrafficSelectorFormat trafficSelectorFormat = (IpV6FlowIdentificationTrafficSelectorFormat)data[Offset.TrafficSelectorFormat];
DataSegment trafficSelector = data.Subsegment(Offset.TrafficSelector, data.Length - Offset.TrafficSelector);
return(new IpV6FlowIdentificationSubOptionTrafficSelector(trafficSelectorFormat, trafficSelector));
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
if (data.Length < ConstantPartLength)
{
return(null);
}
DnsAtmAddressFormat format = (DnsAtmAddressFormat)data[Offset.Format];
DataSegment address = data.Subsegment(Offset.Address, data.Length - ConstantPartLength);
return(new DnsResourceDataAtmAddress(format, address));
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
{
return(null);
}
uint securityParameterIndex = data.ReadUInt(Offset.SecurityParameterIndex, Endianity.Big);
DataSegment authenticator = data.Subsegment(Offset.Authenticator, data.Length - Offset.Authenticator);
return(new IpV6MobilityOptionBindingAuthorizationDataForFmIpV6(securityParameterIndex, authenticator));
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
{
return(null);
}
IpV6MobilityLinkLayerAddressCode code = (IpV6MobilityLinkLayerAddressCode)data[Offset.OptionCode];
DataSegment linkLayerAddress = data.Subsegment(Offset.LinkLayerAddress, data.Length - Offset.LinkLayerAddress);
return(new IpV6MobilityOptionLinkLayerAddress(code, linkLayerAddress));
}
internal override IpV6Option CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
int lineIdentificationLegnth = data[Offset.LineIdentificationLength];
if (data.Length != OptionDataMinimumLength + lineIdentificationLegnth)
return null;
DataSegment lineIdentification = data.Subsegment(Offset.LineIdentification, data.Length - Offset.LineIdentification);
return new IpV6OptionLineIdentificationDestination(lineIdentification);
}
internal static IpV6ExtensionHeaderMobilityCareOfTestInit ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
{
return(null);
}
ulong careOfInitCookie = messageData.ReadULong(MessageDataOffset.CareOfInitCookie, Endianity.Big);
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return(new IpV6ExtensionHeaderMobilityCareOfTestInit(nextHeader, checksum, careOfInitCookie, options));
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
IpV6MobileNodeIdentifierSubtype subtype = (IpV6MobileNodeIdentifierSubtype)data[Offset.Subtype];
DataSegment identifier = data.Subsegment(Offset.Identifier, data.Length - Offset.Identifier);
if (subtype == IpV6MobileNodeIdentifierSubtype.NetworkAccessIdentifier && identifier.Length < MinNetworkAccessIdentifierLength)
return null;
return new IpV6MobilityOptionMobileNodeIdentifier(subtype, identifier);
}
/// <summary>
/// Parses an option from the given data.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <returns>The option if parsing was successful, null otherwise.</returns>
public IpV6Option CreateInstance(DataSegment data)
{
if (data == null)
throw new ArgumentNullException("data");
if (data.Length < OptionDataMinimumLength)
return null;
int lineIdentificationLegnth = data[Offset.LineIdentificationLength];
if (data.Length != OptionDataMinimumLength + lineIdentificationLegnth)
return null;
DataSegment lineIdentification = data.Subsegment(Offset.LineIdentification, data.Length - Offset.LineIdentification);
return new IpV6OptionLineIdentificationDestination(lineIdentification);
}
internal static IpV6ExtensionHeaderMobilityHomeTest ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
return null;
ushort homeNonceIndex = messageData.ReadUShort(MessageDataOffset.HomeNonceIndex, Endianity.Big);
ulong homeInitCookie = messageData.ReadULong(MessageDataOffset.HomeInitCookie, Endianity.Big);
ulong homeKeygenToken = messageData.ReadULong(MessageDataOffset.HomeKeygenToken, Endianity.Big);
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return new IpV6ExtensionHeaderMobilityHomeTest(nextHeader, checksum, homeNonceIndex, homeInitCookie, homeKeygenToken, options);
}
internal override IpV6MobilityOption CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
IpV6DnsUpdateStatus status = (IpV6DnsUpdateStatus)data[Offset.Status];
bool remove = data.ReadBool(Offset.Remove, Mask.Remove);
DataSegment mobileNodeIdentity = data.Subsegment(Offset.MobileNodeIdentity, data.Length - Offset.MobileNodeIdentity);
return new IpV6MobilityOptionDnsUpdate(status, remove, mobileNodeIdentity);
}
internal static IpV6ExtensionHeaderRoutingRpl ParseRoutingData(IpV4Protocol nextHeader, byte segmentsLeft, DataSegment routingData)
{
if (routingData.Length < RoutingDataMinimumLength)
return null;
byte commonPrefixLengthForNonLastAddresses =
(byte)((routingData[RoutingDataOffset.CommonPrefixLengthForNonLastAddresses] & RoutingDataMask.CommonPrefixLengthForNonLastAddresses) >>
RoutingDataShift.CommonPrefixLengthForNonLastAddresses);
if (commonPrefixLengthForNonLastAddresses >= MaxCommonPrefixLength)
return null;
byte commonPrefixLengthForLastAddress =
(byte)(routingData[RoutingDataOffset.CommonPrefixLengthForLastAddress] & RoutingDataMask.CommonPrefixLengthForLastAddress);
if (commonPrefixLengthForLastAddress > MaxCommonPrefixLength)
return null;
byte padSize = (byte)((routingData[RoutingDataOffset.PadSize] & RoutingDataMask.PadSize) >> RoutingDataShift.PadSize);
if (padSize > MaxPadSize)
return null;
int numAddresses = (routingData.Length - RoutingDataOffset.Addresses - padSize - (IpV6Address.SizeOf - commonPrefixLengthForLastAddress)) /
(IpV6Address.SizeOf - commonPrefixLengthForNonLastAddresses) + 1;
if (numAddresses < 0)
return null;
IpV6Address[] addresses = new IpV6Address[numAddresses];
if (numAddresses > 0)
{
byte[] addressBytes = new byte[IpV6Address.SizeOf];
for (int i = 0; i < numAddresses - 1; ++i)
{
DataSegment addressSegment =
routingData.Subsegment(RoutingDataOffset.Addresses + i * (IpV6Address.SizeOf - commonPrefixLengthForNonLastAddresses),
commonPrefixLengthForNonLastAddresses);
addressSegment.Write(addressBytes, 0);
addresses[i] = addressBytes.ReadIpV6Address(0, Endianity.Big);
}
addressBytes = new byte[IpV6Address.SizeOf];
DataSegment lastAddressSegment =
routingData.Subsegment(RoutingDataOffset.Addresses + (numAddresses - 1) * (IpV6Address.SizeOf - commonPrefixLengthForNonLastAddresses),
commonPrefixLengthForLastAddress);
lastAddressSegment.Write(addressBytes, 0);
addresses[numAddresses - 1] = addressBytes.ReadIpV6Address(0, Endianity.Big);
}
return new IpV6ExtensionHeaderRoutingRpl(nextHeader, segmentsLeft, commonPrefixLengthForNonLastAddresses, commonPrefixLengthForLastAddress, padSize,
addresses);
}
internal static IpV6ExtensionHeaderMobilityBindingError ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
return null;
IpV6BindingErrorStatus status = (IpV6BindingErrorStatus)messageData[MessageDataOffset.Status];
IpV6Address homeAddress = messageData.ReadIpV6Address(MessageDataOffset.HomeAddress, Endianity.Big);
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return new IpV6ExtensionHeaderMobilityBindingError(nextHeader, checksum, status, homeAddress, options);
}
internal static IpV6ExtensionHeaderMobilityHeartbeatMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
return null;
bool isUnsolicitedHeartbeatResponse = messageData.ReadBool(MessageDataOffset.IsUnsolicitedHeartbeatResponse, MessageDataMask.IsUnsolicitedHeartbeatResponse);
bool isResponse = messageData.ReadBool(MessageDataOffset.IsResponse, MessageDataMask.IsResponse);
uint sequenceNumber = messageData.ReadUInt(MessageDataOffset.SequenceNumber, Endianity.Big);
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.MobilityOptions, messageData.Length - MessageDataOffset.MobilityOptions));
return new IpV6ExtensionHeaderMobilityHeartbeatMessage(nextHeader, checksum, isUnsolicitedHeartbeatResponse, isResponse, sequenceNumber, options);
}
internal static bool ParseMessageDataToFields(DataSegment messageData, out ushort sequenceNumber, out ushort lifetime, out IpV6MobilityOptions options)
{
if (messageData.Length < MinimumMessageDataLength)
{
sequenceNumber = 0;
lifetime = 0;
options = null;
return false;
}
sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
lifetime = messageData.ReadUShort(MessageDataOffset.Lifetime, Endianity.Big);
options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return true;
}
/// <summary>
/// Parses an option from the given data.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <returns>The option if parsing was successful, null otherwise.</returns>
public IpV6Option CreateInstance(DataSegment data)
{
if (data == null)
throw new ArgumentNullException("data");
if (data.Length < OptionDataMinimumLength)
return null;
int sourceEndpointIdentifierLength = data[Offset.SourceEndpointIdentifierLength];
int destinationEndpointIdentifierLength = data[Offset.DestinationEndpointIdentifierLength];
if (data.Length != OptionDataMinimumLength + sourceEndpointIdentifierLength + destinationEndpointIdentifierLength)
return null;
DataSegment sourceEndpointIdentifier = data.Subsegment(Offset.SourceEndpointIdentifier, sourceEndpointIdentifierLength);
int destinationEndpointIdentifierOffset = Offset.SourceEndpointIdentifier + sourceEndpointIdentifierLength;
DataSegment destinationEndpointIdentifier = data.Subsegment(destinationEndpointIdentifierOffset, destinationEndpointIdentifierLength);
return new IpV6OptionEndpointIdentification(sourceEndpointIdentifier, destinationEndpointIdentifier);
}
/// <summary>
/// Parses an option from the given data.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <returns>The option if parsing was successful, null otherwise.</returns>
public IpV6Option CreateInstance(DataSegment data)
{
if (data == null)
throw new ArgumentNullException("data");
if (data.Length < OptionDataMinimumLength)
return null;
IpV6CalipsoDomainOfInterpretation domainOfInterpretation = (IpV6CalipsoDomainOfInterpretation)data.ReadUInt(Offset.DomainOfInterpretation,
Endianity.Big);
byte compartmentLength = data[Offset.CompartmentLength];
int compartmentLengthInBytes = compartmentLength * sizeof(int);
if (OptionDataMinimumLength + compartmentLengthInBytes > data.Length)
return null;
byte sensitivityLevel = data[Offset.SensitivityLevel];
ushort checksum = data.ReadUShort(Offset.Checksum, Endianity.Big);
DataSegment compartmentBitmap = data.Subsegment(Offset.CompartmentBitmap, compartmentLengthInBytes);
return new IpV6OptionCalipso(domainOfInterpretation, sensitivityLevel, checksum, compartmentBitmap);
}
internal static IpV6OptionSmfDpdSequenceBased CreateSpecificInstance(DataSegment data)
{
IpV6TaggerIdType taggerIdType = (IpV6TaggerIdType)((data[Offset.TaggerIdType] & Mask.TaggerIdType) >> Shift.TaggerIdType);
int taggerIdLength = (taggerIdType == IpV6TaggerIdType.Null ? 0 : (data[Offset.TaggerIdLength] & Mask.TaggerIdLength) + 1);
if (data.Length < Offset.TaggerId + taggerIdLength)
return null;
DataSegment identifier = data.Subsegment(Offset.TaggerId + taggerIdLength, data.Length - Offset.TaggerId - taggerIdLength);
switch (taggerIdType)
{
case IpV6TaggerIdType.Null:
return new IpV6OptionSmfDpdNull(identifier);
case IpV6TaggerIdType.Default:
return new IpV6OptionSmfDpdDefault(data.Subsegment(Offset.TaggerId, taggerIdLength), identifier);
case IpV6TaggerIdType.IpV4:
if (taggerIdLength != IpV4Address.SizeOf)
return null;
IpV4Address ipV4Address = data.ReadIpV4Address(0, Endianity.Big);
return new IpV6OptionSmfDpdIpV4(ipV4Address, identifier);
case IpV6TaggerIdType.IpV6:
if (taggerIdLength != IpV6Address.SizeOf)
return null;
IpV6Address ipV6Address = data.ReadIpV6Address(0, Endianity.Big);
return new IpV6OptionSmfDpdIpV6(ipV6Address, identifier);
default:
return null;
}
}
internal static bool ParseMessageDataToFields(DataSegment messageData, out ushort sequenceNumber,
out bool acknowledge, out bool homeRegistration, out bool linkLocalAddressCompatibility,
out bool keyManagementMobilityCapability, out ushort lifetime, out IpV6MobilityOptions options)
{
if (messageData.Length < MinimumMessageDataLength)
{
sequenceNumber = 0;
acknowledge = false;
homeRegistration = false;
linkLocalAddressCompatibility = false;
keyManagementMobilityCapability = false;
lifetime = 0;
options = null;
return false;
}
sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
acknowledge = messageData.ReadBool(MessageDataOffset.Acknowledge, MessageDataMask.Acknowledge);
homeRegistration = messageData.ReadBool(MessageDataOffset.HomeRegistration, MessageDataMask.HomeRegistration);
linkLocalAddressCompatibility = messageData.ReadBool(MessageDataOffset.LinkLocalAddressCompatibility, MessageDataMask.LinkLocalAddressCompatibility);
keyManagementMobilityCapability = messageData.ReadBool(MessageDataOffset.KeyManagementMobilityCapability,
MessageDataMask.KeyManagementMobilityCapability);
lifetime = messageData.ReadUShort(MessageDataOffset.Lifetime, Endianity.Big);
options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return true;
}
internal static bool ParseMessageDataFields(DataSegment messageData, out IpV6BindingAcknowledgementStatus status,
out bool keyManagementMobilityCapability, out ushort sequenceNumber, out ushort lifetime,
out IpV6MobilityOptions options)
{
if (messageData.Length < MinimumMessageDataLength)
{
status = IpV6BindingAcknowledgementStatus.BindingUpdateAccepted;
keyManagementMobilityCapability = false;
sequenceNumber = 0;
lifetime = 0;
options = null;
return false;
}
status = (IpV6BindingAcknowledgementStatus)messageData[MessageDataOffset.Status];
keyManagementMobilityCapability = messageData.ReadBool(MessageDataOffset.KeyManagementMobilityCapability,
MessageDataMask.KeyManagementMobilityCapability);
sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
lifetime = messageData.ReadUShort(MessageDataOffset.Lifetime, Endianity.Big);
options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return true;
}
internal static IpV6ExtensionHeaderAuthentication CreateInstance(DataSegment extensionHeaderData, out int numBytesRead)
{
if (extensionHeaderData.Length < MinimumLength)
{
numBytesRead = 0;
return null;
}
IpV4Protocol nextHeader = (IpV4Protocol)extensionHeaderData[Offset.NextHeader];
byte payloadLength = extensionHeaderData[Offset.PayloadLength];
if (extensionHeaderData.Length < Offset.AuthenticationData + payloadLength)
{
numBytesRead = 0;
return null;
}
uint securityParametersIndex = extensionHeaderData.ReadUInt(Offset.SecurityParametersIndex, Endianity.Big);
uint sequenceNumber = extensionHeaderData.ReadUInt(Offset.SequenceNumber, Endianity.Big);
DataSegment authenticationData = extensionHeaderData.Subsegment(Offset.AuthenticationData, payloadLength);
numBytesRead = Offset.AuthenticationData + payloadLength;
return new IpV6ExtensionHeaderAuthentication(nextHeader, securityParametersIndex, sequenceNumber, authenticationData);
}
internal static IpV6ExtensionHeaderMobility ParseData(IpV4Protocol nextHeader, DataSegment data)
{
if (data.Length < MinimumDataLength)
return null;
IpV6MobilityHeaderType mobilityHeaderType = (IpV6MobilityHeaderType)data[DataOffset.MobilityHeaderType];
ushort checksum = data.ReadUShort(DataOffset.Checksum, Endianity.Big);
DataSegment messageData = data.Subsegment(DataOffset.MessageData, data.Length - DataOffset.MessageData);
switch (mobilityHeaderType)
{
case IpV6MobilityHeaderType.BindingRefreshRequest: // 0
return IpV6ExtensionHeaderMobilityBindingRefreshRequest.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.HomeTestInit: // 1
return IpV6ExtensionHeaderMobilityHomeTestInit.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.CareOfTestInit: // 2
return IpV6ExtensionHeaderMobilityCareOfTestInit.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.HomeTest: // 3
return IpV6ExtensionHeaderMobilityHomeTest.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.CareOfTest: // 4
return IpV6ExtensionHeaderMobilityCareOfTest.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.BindingUpdate: // 5
return IpV6ExtensionHeaderMobilityBindingUpdate.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.BindingAcknowledgement: // 6
return IpV6ExtensionHeaderMobilityBindingAcknowledgement.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.BindingError: // 7
return IpV6ExtensionHeaderMobilityBindingError.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.FastBindingUpdate: // 8
return IpV6ExtensionHeaderMobilityFastBindingUpdate.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.FastBindingAcknowledgement: // 9
return IpV6ExtensionHeaderMobilityFastBindingAcknowledgement.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.FastNeighborAdvertisement: // 10
return IpV6ExtensionHeaderMobilityFastNeighborAdvertisement.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.Experimental: // 11
return IpV6ExtensionHeaderMobilityExperimental.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.HomeAgentSwitchMessage: // 12
return IpV6ExtensionHeaderMobilityHomeAgentSwitchMessage.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.HeartbeatMessage: // 13
return IpV6ExtensionHeaderMobilityHeartbeatMessage.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.HandoverInitiateMessage: // 14
return IpV6ExtensionHeaderMobilityHandoverInitiateMessage.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.HandoverAcknowledgeMessage: // 15
return IpV6ExtensionHeaderMobilityHandoverAcknowledgeMessage.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.BindingRevocationMessage: // 16
return IpV6ExtensionHeaderMobilityBindingRevocationMessage.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.LocalizedRoutingInitiation: // 17
return IpV6ExtensionHeaderMobilityLocalizedRoutingInitiation.ParseMessageData(nextHeader, checksum, messageData);
case IpV6MobilityHeaderType.LocalizedRoutingAcknowledgement: // 18
return IpV6ExtensionHeaderMobilityLocalizedRoutingAcknowledgement.ParseMessageData(nextHeader, checksum, messageData);
default:
return null;
}
}
internal static IpV6ExtensionHeaderMobilityHandoverAcknowledgeMessage ParseMessageData(IpV4Protocol nextHeader, ushort checksum, DataSegment messageData)
{
if (messageData.Length < MinimumMessageDataLength)
return null;
ushort sequenceNumber = messageData.ReadUShort(MessageDataOffset.SequenceNumber, Endianity.Big);
IpV6MobilityHandoverAcknowledgeCode code = (IpV6MobilityHandoverAcknowledgeCode)messageData[MessageDataOffset.Code];
IpV6MobilityOptions options = new IpV6MobilityOptions(messageData.Subsegment(MessageDataOffset.Options, messageData.Length - MessageDataOffset.Options));
return new IpV6ExtensionHeaderMobilityHandoverAcknowledgeMessage(nextHeader, checksum, sequenceNumber, code, options);
}
internal override IpV6Option CreateInstance(DataSegment data)
{
if (data.Length < OptionDataMinimumLength)
return null;
bool down = data.ReadBool(Offset.Down, Mask.Down);
bool rankError = data.ReadBool(Offset.RankError, Mask.RankError);
bool forwardingError = data.ReadBool(Offset.ForwardingError, Mask.ForwardingError);
byte rplInstanceId = data[Offset.RplInstanceId];
ushort senderRank = data.ReadUShort(Offset.SenderRank, Endianity.Big);
DataSegment subTlvs = data.Subsegment(Offset.SubTlvs, data.Length - Offset.SubTlvs);
return new IpV6OptionRoutingProtocolLowPowerAndLossyNetworks(down, rankError, forwardingError, rplInstanceId, senderRank, subTlvs);
}
internal static IpV6ExtensionHeaderEncapsulatingSecurityPayload CreateInstance(DataSegment extensionHeaderData, out int numBytesRead)
{
if (extensionHeaderData.Length < MinimumLength)
{
numBytesRead = 0;
return null;
}
uint securityParametersIndex = extensionHeaderData.ReadUInt(Offset.SecurityParametersIndex, Endianity.Big);
uint sequenceNumber = extensionHeaderData.ReadUInt(Offset.SequenceNumber, Endianity.Big);
DataSegment encryptedDataAndAuthenticationData = extensionHeaderData.Subsegment(Offset.PayloadData, extensionHeaderData.Length - Offset.PayloadData);
numBytesRead = extensionHeaderData.Length;
return new IpV6ExtensionHeaderEncapsulatingSecurityPayload(securityParametersIndex, sequenceNumber, encryptedDataAndAuthenticationData);
}