/// <summary>
/// Encode the instance of current class into bytes.
/// </summary>
/// <returns>The encoded bytes.</returns>
public byte[] ToBytes()
{
UpdateInterrelatedFields();
byte[] header = PacUtility.ObjectToMemory(NativePacType);
byte[][] bodyReferences = new byte[NativePacType.cBuffers][];
for (int i = 0; i < NativePacType.cBuffers; i++)
{
if (pacInfoBuffers[i] == null)
{
continue;
}
bodyReferences[i] = pacInfoBuffers[i].EncodeBuffer();
int length = bodyReferences[i].Length;
// double check the totalLength
// NativePacType.Buffers[index].cbBufferSize has been updated in previous
// UpdateInterrelatedFields() method, given by each pacInfoBuffer's
// CalculateSize() method.
// following evaluation double check whether CalculateSize() method's
// result conforms to EncodeBuffer() method's result.
// Note: some kind of pacInfoBuffers return EncodeBuffer().Length as the
// CalculateSize(), such as NDR encoded structures. But some other
// pacInfoBuffers can calculate totalLength without encoding the structure.
AssertBufferSize(NativePacType.Buffers, i, length);
}
return(ConcatenateBuffers(header, bodyReferences));
}
/// <summary>
/// Encode the instance of current class into byte array,
/// according to TD specification.
/// </summary>
/// <returns>The encoded byte array</returns>
internal override byte[] EncodeBuffer()
{
using (SafeIntPtr ptr = TypeMarshal.ToIntPtr(NativeS4uDelegationInfo))
{
return(PacUtility.NdrMarshal(ptr, FormatString.OffsetS4u));
}
}
internal override void DecodeBuffer(byte[] buffer, int index, int count)
{
NativeClaimsSetMetadata = PacUtility.NdrUnmarshal <PAC_CLIENT_CLAIMS_INFO>(
buffer,
index,
count,
FormatString.OffsetClientClaim, false, 4);
byte[] decompressed = null;
int decompressedLen = -1;
if (NativeClaimsSetMetadata.Claims.usCompressionFormat != CLAIMS_COMPRESSION_FORMAT.COMPRESSION_FORMAT_NONE)
{
decompressed = ClaimsCompression.Decompress(NativeClaimsSetMetadata.Claims.usCompressionFormat,
NativeClaimsSetMetadata.Claims.ClaimsSet,
(int)NativeClaimsSetMetadata.Claims.ulUncompressedClaimsSetSize);
decompressedLen = decompressed.Length;
}
else
{
decompressed = NativeClaimsSetMetadata.Claims.ClaimsSet;
decompressedLen = (int)NativeClaimsSetMetadata.Claims.ulClaimsSetSize;
}
NativeClaimSet = PacUtility.NdrUnmarshal <CLAIMS_SET>(
decompressed,
0,
decompressedLen,
FormatString.OffsetClaimSet, false, 4);
}
internal override byte[] EncodeBuffer()
{
using (SafeIntPtr ptr = TypeMarshal.ToIntPtr(NativeClaimsSetMetadata))
{
return(PacUtility.NdrMarshal(ptr, FormatString.OffsetClientClaim));
}
}
/// <summary>
/// Decode specified buffer from specified index, with specified count
/// of bytes, into the instance of current class.
/// </summary>
/// <param name="buffer">The specified buffer.</param>
/// <param name="index">The specified index from beginning of buffer.</param>
/// <param name="count">The specified count of bytes to be decoded.</param>
internal override void DecodeBuffer(byte[] buffer, int index, int count)
{
NativeKerbValidationInfo = PacUtility.NdrUnmarshal <KERB_VALIDATION_INFO>(
buffer,
index,
count,
FormatString.OffsetKerb);
}
/// <summary>
/// Decode specified buffer from specified index, with specified count
/// of bytes, into the instance of current class.
/// </summary>
/// <param name="buffer">The specified buffer.</param>
/// <param name="index">The specified index from beginning of buffer.</param>
/// <param name="count">The specified count of bytes to be decoded.</param>
internal override void DecodeBuffer(byte[] buffer, int index, int count)
{
NativeS4uDelegationInfo = PacUtility.NdrUnmarshal <_S4U_DELEGATION_INFO>(
buffer,
index,
count,
FormatString.OffsetS4u);
}
/// <summary>
/// Update length and offset of UPN and DNS Domain.
/// </summary>
private void UpdateOffsetLength()
{
int upnOffset = Marshal.SizeOf(NativeUpnDnsInfo.GetType());
NativeUpnDnsInfo.UpnOffset = (ushort)PacUtility.AlignTo(upnOffset, UpnDnsAlignUnit);
NativeUpnDnsInfo.UpnLength = (ushort)(Encoding.Unicode.GetByteCount(Upn));
int dnsOffset = NativeUpnDnsInfo.UpnOffset + NativeUpnDnsInfo.UpnLength;
NativeUpnDnsInfo.DnsDomainNameOffset = (ushort)PacUtility.AlignTo(dnsOffset, UpnDnsAlignUnit);
NativeUpnDnsInfo.DnsDomainNameLength = (ushort)(Encoding.Unicode.GetByteCount(DnsDomain));
}
/// <summary>
/// Decode specified buffer from specified index, with specified count
/// of bytes, into the instance of current class.
/// </summary>
/// <param name="buffer">The specified buffer.</param>
/// <param name="index">The specified index from beginning of buffer.</param>
/// <param name="count">The specified count of bytes to be decoded.</param>
internal override void DecodeBuffer(byte[] buffer, int index, int count)
{
NativePacCredentialInfo =
PacUtility.MemoryToObject <PAC_CREDENTIAL_INFO>(buffer, index, count);
int headerLength = sizeof(uint) + sizeof(uint);
// This is vary length member without pre-defined calculate method.
// Need to decode manually.
NativePacCredentialInfo.SerializedData = new byte[count - headerLength];
Buffer.BlockCopy(buffer, index + headerLength, NativePacCredentialInfo.SerializedData, 0, count - headerLength);
}
/// <summary>
/// Encrypt a PacCredentialData instance. The encrypted data
/// can be accessed from SerializedData property.
/// </summary>
/// <param name="credentialData">The _PAC_CREDENTIAL_DATA instance to be encrypted.</param>
/// <param name="key">The encrypt key.</param>
public void Encrypt(_PAC_CREDENTIAL_DATA credentialData, byte[] key)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
byte[] plain = null;
using (SafeIntPtr ptr = TypeMarshal.ToIntPtr(credentialData))
{
plain = PacUtility.NdrMarshal(ptr, FormatString.OffsetCredentialData);
}
NativePacCredentialInfo.SerializedData = Encrypt(key, plain, NativePacCredentialInfo.EncryptionType);
}
/// <summary>
/// Decrypt the data of SerializedData property into
/// a PacCredentialData instance.
/// </summary>
/// <param name="key">The decrypt key.</param>
/// <returns>The decrypted _PAC_CREDENTIAL_DATA instance.</returns>
public _PAC_CREDENTIAL_DATA Decrypt(byte[] key)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
byte[] plain = Decrypt(
key,
NativePacCredentialInfo.SerializedData,
NativePacCredentialInfo.EncryptionType);
return(PacUtility.NdrUnmarshal <_PAC_CREDENTIAL_DATA>(plain, 0, plain.Length, FormatString.OffsetCredentialData));
}
/// <summary>
/// Decode specified buffer from specified index, with specified count
/// of bytes, into the instance of current class.
/// </summary>
/// <param name="buffer">The specified buffer.</param>
/// <param name="index">The specified index from beginning of buffer.</param>
/// <param name="count">The specified count of bytes to be decoded.</param>
internal override void DecodeBuffer(byte[] buffer, int index, int count)
{
NativeUpnDnsInfo =
PacUtility.MemoryToObject <UPN_DNS_INFO>(buffer, index, count);
upn = ReadUtf16String(
buffer,
index + NativeUpnDnsInfo.UpnOffset,
NativeUpnDnsInfo.UpnLength);
dnsDomain = ReadUtf16String(
buffer,
index + NativeUpnDnsInfo.DnsDomainNameOffset,
NativeUpnDnsInfo.DnsDomainNameLength);
UpdateOffsetLength();
}
/// <summary>
/// Concatenate specified header buffer and specified body buffers.
/// </summary>
/// <param name="header">The specified header buffer.</param>
/// <param name="bodyReferences">The specified body buffers.</param>
/// <returns>The integrated buffer.</returns>
private byte[] ConcatenateBuffers(byte[] header, byte[][] bodyReferences)
{
// calculate total totalLength
int totalLength = header.Length;
for (int i = 0; i < NativePacType.cBuffers; i++)
{
if (bodyReferences[i] == null)
{
continue;
}
int length = bodyReferences[i].Length;
// double check the length
// NativePacType.Buffers[index].cbBufferSize has been updated in previous
// UpdateInterrelatedFields() method, given by each pacInfoBuffer's
// CalculateSize() method.
// following evaluation double check whether CalculateSize() method's
// result conforms to EncodeBuffer() method's result.
// Note: some kind of pacInfoBuffers return EncodeBuffer().Length as the
// CalculateSize(), such as NDR encoded structures. But some other
// pacInfoBuffers can calculate totalLength without encoding the structure.
AssertBufferSize(NativePacType.Buffers, i, length);
totalLength += PacUtility.AlignTo(length, PacTypeAlignUnit);
}
byte[] total = new byte[totalLength];
int offset = 0;
Buffer.BlockCopy(header, 0, total, offset, header.Length);
offset += header.Length;
for (int i = 0; i < bodyReferences.Length; ++i)
{
if (bodyReferences[i] == null)
{
continue;
}
int length = bodyReferences[i].Length;
Buffer.BlockCopy(bodyReferences[i], 0, total, offset, length);
offset += PacUtility.AlignTo(length, PacTypeAlignUnit);
}
return(total);
}
/// <summary>
/// Construct an instance of current class by decoding specified bytes.
/// </summary>
/// <param name="buffer">The specified bytes.</param>
internal PacType(byte[] buffer)
{
NativePacType = PacUtility.MemoryToObject <PACTYPE>(buffer);
pacInfoBuffers = new PacInfoBuffer[NativePacType.Buffers.Length];
for (int i = 0; i < NativePacType.Buffers.Length; ++i)
{
if (NativePacType.Buffers[i].cbBufferSize > 0)
{
PacInfoBuffers[i] = PacInfoBuffer.DecodeBuffer(
NativePacType.Buffers[i],
buffer);
}
else
{
PacInfoBuffers[i] = null;
}
}
}
/// <summary>
/// Encode the instance of current class into byte array,
/// according to TD specification.
/// </summary>
/// <returns>The encoded byte array</returns>
internal override byte[] EncodeBuffer()
{
byte[] header = PacUtility.ObjectToMemory(NativeUpnDnsInfo);
int length = CalculateSize();
byte[] result = new byte[length];
// header
Buffer.BlockCopy(header, 0, result, 0, header.Length);
// upn content
Buffer.BlockCopy(Encoding.Unicode.GetBytes(upn), 0, result,
NativeUpnDnsInfo.UpnOffset, NativeUpnDnsInfo.UpnLength);
// dns domain content
Buffer.BlockCopy(Encoding.Unicode.GetBytes(dnsDomain), 0, result,
NativeUpnDnsInfo.DnsDomainNameOffset, NativeUpnDnsInfo.DnsDomainNameLength);
return(result);
}
/// <summary>
/// Update cbBufferSize and Offset of all PAC_INFO_BUFFERs
/// after the buffers' content updated.
/// </summary>
public void UpdateInterrelatedFields()
{
AssertBuffersCount(pacInfoBuffers.Length, NativePacType.Buffers.Length);
int offset = CalculateHeaderSize();
for (int i = 0; i < pacInfoBuffers.Length; i++)
{
NativePacType.Buffers[i].Offset = (ulong)offset;
if (pacInfoBuffers[i] == null)
{
continue;
}
int size = pacInfoBuffers[i].CalculateSize();
NativePacType.Buffers[i].cbBufferSize = (uint)size;
offset += size;
//TD section 2.3: "All PAC elements MUST be placed on an 8-byte boundary."
offset = PacUtility.AlignTo(offset, PacTypeAlignUnit);
}
}
internal override void DecodeBuffer(byte[] buffer, int index, int count)
{
byte[] RawData = new byte[count];
Array.ConstrainedCopy(buffer, index, RawData, 0, count);
NativeClaimsSetMetadata = PacUtility.NdrUnmarshal <PAC_DEVICE_CLAIMS_INFO>(
buffer,
index,
count,
FormatString.OffsetClientClaim, false, 4);
byte[] decompressed = null;
int decompressedLen = -1;
if (NativeClaimsSetMetadata.Claims.usCompressionFormat != CLAIMS_COMPRESSION_FORMAT.COMPRESSION_FORMAT_NONE)
{
uint err = ClaimsCompression.Decompress(NativeClaimsSetMetadata.Claims.usCompressionFormat,
NativeClaimsSetMetadata.Claims.ClaimsSet,
(int)NativeClaimsSetMetadata.Claims.ulUncompressedClaimsSetSize,
out decompressed);
if (err != 0)
{
throw new Exception("Failed to decompress CLAIMS_SET data, error code is :" + err);
}
decompressedLen = decompressed.Length;
}
else
{
decompressed = NativeClaimsSetMetadata.Claims.ClaimsSet;
decompressedLen = (int)NativeClaimsSetMetadata.Claims.ulClaimsSetSize;
}
NativeClaimSet = PacUtility.NdrUnmarshal <CLAIMS_SET>(
decompressed,
0,
decompressedLen,
FormatString.OffsetClaimSet, false, 4);
}
/// <summary>
/// Decode specified buffer from specified index, with specified count
/// of bytes, into the instance of current class.
/// </summary>
/// <param name="buffer">The specified buffer.</param>
/// <param name="index">The specified index from beginning of buffer.</param>
/// <param name="count">The specified count of bytes to be decoded.</param>
internal override void DecodeBuffer(byte[] buffer, int index, int count)
{
NativePacClientInfo =
PacUtility.MemoryToObject <PAC_CLIENT_INFO>(buffer, index, count);
}
/// <summary>
/// Encode the instance of current class into byte array,
/// according to TD specification.
/// </summary>
/// <returns>The encoded byte array</returns>
internal override byte[] EncodeBuffer()
{
return(PacUtility.ObjectToMemory(NativePacClientInfo));
}
public _NTLM_SUPPLEMENTAL_CREDENTIAL GetNtlmCredential()
{
return(PacUtility.MemoryToObject <_NTLM_SUPPLEMENTAL_CREDENTIAL>(Credentials, 0, Credentials.Length));
}
/// <summary>
/// Set _NTLM_SUPPLEMENTAL_CREDENTIAL to Credentials.
/// Credentials is a pointer, pointing to a byte array.
/// The byte array is the NDR-encoded _NTLM_SUPPLEMENTAL_CREDENTIAL.
/// </summary>
/// <param name="ntlmCredential">the embedded _NTLM_SUPPLEMENTAL_CREDENTIAL instance.</param>
public void SetNtlmCredential(_NTLM_SUPPLEMENTAL_CREDENTIAL ntlmCredential)
{
Credentials = PacUtility.ObjectToMemory <_NTLM_SUPPLEMENTAL_CREDENTIAL>(ntlmCredential);
CredentialSize = (uint)Credentials.Length;
}
/// <summary>
/// Encode the instance of current class into byte array,
/// according to TD specification.
/// </summary>
/// <returns>The encoded byte array</returns>
internal override byte[] EncodeBuffer()
{
return(PacUtility.ObjectToMemory(NativePacSignatureData));
}
/// <summary>
/// Decode specified buffer from specified index, with specified count
/// of bytes, into the instance of current class.
/// </summary>
/// <param name="buffer">The specified buffer.</param>
/// <param name="index">The specified index from beginning of buffer.</param>
/// <param name="count">The specified count of bytes to be decoded.</param>
internal override void DecodeBuffer(byte[] buffer, int index, int count)
{
NativePacSignatureData =
PacUtility.MemoryToObject <PAC_SIGNATURE_DATA>(buffer, index, count);
}