public SecBufferDesc(MultipleSecBufferHelper[] secBufferBytesArray)
{
if (secBufferBytesArray == null || secBufferBytesArray.Length == 0)
{
throw new ArgumentException("secBufferBytesArray cannot be null or 0 length");
}
ulVersion = (int)SecBufferType.SECBUFFER_VERSION;
cBuffers = secBufferBytesArray.Length;
//Allocate memory for SecBuffer Array....
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(SecBuffer)) * cBuffers);
for (int Index = 0; Index < secBufferBytesArray.Length; Index++)
{
//Super hack: Now allocate memory for the individual SecBuffers
//and just copy the bit values to the SecBuffer array!!!
SecBuffer ThisSecBuffer = secBufferBytesArray[Index].Buffer == null ? new SecBuffer() :
new SecBuffer(secBufferBytesArray[Index].Buffer, secBufferBytesArray[Index].BufferType);
//We will write out bits in the following order:
//int cbBuffer;
//int BufferType;
//pvBuffer;
//Note that we won't be releasing the memory allocated by ThisSecBuffer until we
//are disposed...
int CurrentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
Marshal.WriteInt32(pBuffers, CurrentOffset, ThisSecBuffer.cbBuffer);
Marshal.WriteInt32(pBuffers, CurrentOffset + Marshal.SizeOf(ThisSecBuffer.cbBuffer), ThisSecBuffer.BufferType);
Marshal.WriteIntPtr(pBuffers, CurrentOffset + Marshal.SizeOf(ThisSecBuffer.cbBuffer) + Marshal.SizeOf(ThisSecBuffer.BufferType), ThisSecBuffer.pvBuffer);
}
}
public void Dispose()
{
if (pBuffers != IntPtr.Zero)
{
if (cBuffers == 1)
{
SecBuffer ThisSecBuffer = (SecBuffer)Marshal.PtrToStructure(pBuffers, typeof(SecBuffer));
ThisSecBuffer.Dispose();
}
else
{
for (int Index = 0; Index < cBuffers; Index++)
{
//The bits were written out the following order:
//int cbBuffer;
//int BufferType;
//pvBuffer;
//What we need to do here is to grab a hold of the pvBuffer allocate by the individual
//SecBuffer and release it...
int CurrentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
IntPtr SecBufferpvBuffer = Marshal.ReadIntPtr(pBuffers, CurrentOffset + Marshal.SizeOf(typeof(int)) + Marshal.SizeOf(typeof(int)));
Marshal.FreeHGlobal(SecBufferpvBuffer);
}
}
Marshal.FreeHGlobal(pBuffers);
pBuffers = IntPtr.Zero;
}
}
internal static ExportedSecurityContext ExportContext(SecHandle context, SecPkgContextExportFlags export_flags, string package, bool client)
{
if (context is null)
{
throw new ArgumentNullException(nameof(context));
}
SecBuffer buffer = new SecBuffer()
{
BufferType = SecurityBufferType.Empty
};
try
{
SecurityNativeMethods.ExportSecurityContext(context, export_flags,
buffer, out SafeKernelObjectHandle token).CheckResult();
return(new ExportedSecurityContext(package, buffer.ToArray(), !token.IsInvalid ? NtToken.FromHandle(token) : null, client));
}
finally
{
if (buffer.pvBuffer != IntPtr.Zero)
{
SecurityNativeMethods.FreeContextBuffer(buffer.pvBuffer);
}
}
}
public int HandleType2(byte[] ntlmBytes)
{
SecBuffer secBuffer = secServerBufferDesc.GetSecBuffer();
byte[] newNtlmBytes = secBuffer.GetBytes();
if (ntlmBytes.Length >= newNtlmBytes.Length)
{
for (int idx = 0; idx < ntlmBytes.Length; ++idx)
{
if (idx < newNtlmBytes.Length)
{
ntlmBytes[idx] = newNtlmBytes[idx];
}
else
{
ntlmBytes[idx] = 0;
}
}
}
else
{
Console.WriteLine("NTLM Type2 cannot be replaced. New buffer too big");
}
return(0);
}
private bool GenServerContext(AuthenticationToken token)
{
bool new_context = _new_context;
_new_context = false;
using (DisposableList list = new DisposableList()) {
SecBuffer out_sec_buffer = list.AddResource(new SecBuffer(SecBufferType.Token, 64 * 1024));
SecBufferDesc out_buffer_desc = list.AddResource(new SecBufferDesc(out_sec_buffer));
List <SecBuffer> buffers = new List <SecBuffer>();
buffers.Add(list.AddResource(new SecBuffer(SecBufferType.Token, token.ToArray())));
if (_channel_binding != null)
{
buffers.Add(list.AddResource(SecBuffer.CreateForChannelBinding(_channel_binding)));
}
SecBufferDesc in_buffer_desc = list.AddResource(new SecBufferDesc(buffers.ToArray()));
LargeInteger expiry = new LargeInteger();
SecStatusCode result = SecurityNativeMethods.AcceptSecurityContext(_creds.CredHandle, new_context ? null : _context,
in_buffer_desc, _req_flags, _data_rep, _context, out_buffer_desc, out AcceptContextRetFlags context_attr, expiry).CheckResult();
Flags = context_attr;
Expiry = expiry.QuadPart;
if (result == SecStatusCode.CompleteNeeded || result == SecStatusCode.CompleteAndContinue)
{
SecurityNativeMethods.CompleteAuthToken(_context, out_buffer_desc).CheckResult();
}
Token = AuthenticationToken.Parse(_creds.PackageName, _token_count++, false, out_buffer_desc.ToArray()[0].ToArray());
return(!(result == SecStatusCode.ContinueNeeded || result == SecStatusCode.CompleteAndContinue));
}
}
internal override void FromBuffer(SecBuffer buffer)
{
if (_type.HasFlagSet(SecurityBufferType.ReadOnly | SecurityBufferType.ReadOnlyWithChecksum))
{
return;
}
_type = buffer.BufferType;
}
public void InitClientBuffer(ref SecBuffer buffer, ref SecBufferDesc buffer_desc)
{
buffer.BufferType = (int)Secur32.SECBUFFER_TOKEN;
buffer_desc.Version = (int)Secur32.SECBUFFER_VERSION;
buffer_desc.BufferCount = 1;
buffer_desc.BuffersPtr = Marshal.AllocHGlobal(Marshal.SizeOf(buffer));
Marshal.StructureToPtr(buffer, buffer_desc.BuffersPtr, false);
}
internal override void FromBuffer(SecBuffer buffer)
{
if (Type.HasFlagSet(SecurityBufferType.ReadOnly | SecurityBufferType.ReadOnlyWithChecksum))
{
return;
}
_array = new ArraySegment <byte>(buffer.ToArray());
}
public byte[] GetSecBufferByteArray()
{
byte[] Buffer = null;
if (pBuffers == IntPtr.Zero)
{
throw new InvalidOperationException("Object has already been disposed!!!");
}
if (cBuffers == 1)
{
SecBuffer ThisSecBuffer = (SecBuffer)Marshal.PtrToStructure(pBuffers, typeof(SecBuffer));
if (ThisSecBuffer.cbBuffer > 0)
{
Buffer = new byte[ThisSecBuffer.cbBuffer];
Marshal.Copy(ThisSecBuffer.pvBuffer, Buffer, 0, ThisSecBuffer.cbBuffer);
}
}
else
{
int BytesToAllocate = 0;
for (int Index = 0; Index < cBuffers; Index++)
{
//The bits were written out the following order:
//int cbBuffer;
//int BufferType;
//pvBuffer;
//What we need to do here calculate the total number of bytes we need to copy...
int CurrentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
BytesToAllocate += Marshal.ReadInt32(pBuffers, CurrentOffset);
}
Buffer = new byte[BytesToAllocate];
for (int Index = 0, BufferIndex = 0; Index < cBuffers; Index++)
{
//The bits were written out the following order:
//int cbBuffer;
//int BufferType;
//pvBuffer;
//Now iterate over the individual buffers and put them together into a
//byte array...
int CurrentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
int BytesToCopy = Marshal.ReadInt32(pBuffers, CurrentOffset);
if (BytesToCopy == 0)
{
break;
}
IntPtr SecBufferpvBuffer = Marshal.ReadIntPtr(pBuffers, CurrentOffset + Marshal.SizeOf(typeof(int)) + Marshal.SizeOf(typeof(int)));
Marshal.Copy(SecBufferpvBuffer, Buffer, BufferIndex, BytesToCopy);
BufferIndex += BytesToCopy;
}
}
return(Buffer);
}
/// <summary>
/// Creates a SecBufferDesc struct with a single empty SecBuffer.
/// </summary>
/// <param name="bufferSize">Size of the SecBuffer</param>
public SecBufferDesc(int bufferSize)
{
ulVersion = SECBUFFER_VERSION;
cBuffers = 1;
SecBuffer ThisSecBuffer = new SecBuffer(bufferSize);
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(ThisSecBuffer));
Marshal.StructureToPtr(ThisSecBuffer, pBuffers, false);
}
internal static ExportedSecurityContext ExportContext(SecHandle context, SecPkgContextExportFlags export_flags, string package)
{
using (SecBuffer buffer = new SecBuffer(SecurityBufferType.Empty, 64 * 1024))
{
SecurityNativeMethods.ExportSecurityContext(context, SecPkgContextExportFlags.None,
buffer, out SafeKernelObjectHandle token).CheckResult();
return(new ExportedSecurityContext(package, buffer.ToArray(), NtToken.FromHandle(token)));
}
}
public SecBufferDesc(byte[] secBufferBytes)
{
ulVersion = (int)SecBufferType.SECBUFFER_VERSION;
cBuffers = 1;
SecBuffer secBuffer = new SecBuffer(secBufferBytes);
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(secBuffer));
Marshal.StructureToPtr(secBuffer, pBuffers, false);
}
public byte[] GetSecBufferBytes()
{
if (pBuffers == IntPtr.Zero)
{
throw new ObjectDisposedException("SecBufferDesc");
}
SecBuffer secBuffer = (SecBuffer)Marshal.PtrToStructure(pBuffers, typeof(SecBuffer));
return(secBuffer.GetBytes());
}
public void Dispose()
{
if (pBuffers != IntPtr.Zero)
{
SecBuffer secBuffer = Marshal2.PtrToStructure <SecBuffer>(pBuffers);
secBuffer.Dispose();
Marshal.FreeHGlobal(pBuffers);
pBuffers = IntPtr.Zero;
}
}
private SecBufferDesc(SecBuffer secBuffer)
{
ulVersion = SecBufferType.SECBUFFER_VERSION;
cBuffers = 1;
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(secBuffer));
Marshal.StructureToPtr(secBuffer, pBuffers, false);
}
public byte[] GetSecBufferBytes()
{
if (pBuffers == IntPtr.Zero)
{
throw new ObjectDisposedException(nameof(SecBufferDesc));
}
SecBuffer secBuffer = Marshal2.PtrToStructure <SecBuffer>(pBuffers);
return(secBuffer.GetBytes());
}
public void Dispose()
{
if (pBuffers != IntPtr.Zero)
{
SecBuffer secBuffer = (SecBuffer)Marshal.PtrToStructure(pBuffers, typeof(SecBuffer));
secBuffer.Dispose();
Marshal.FreeHGlobal(pBuffers);
pBuffers = IntPtr.Zero;
}
}
internal override SecBuffer ToBuffer(DisposableList list)
{
SEC_CHANNEL_BINDINGS sec_channel_bind = new SEC_CHANNEL_BINDINGS();
sec_channel_bind.cbApplicationDataLength = _channel_binding_token.Length;
sec_channel_bind.dwApplicationDataOffset = Marshal.SizeOf(typeof(SEC_CHANNEL_BINDINGS));
using (var binding = new SafeStructureInOutBuffer <SEC_CHANNEL_BINDINGS>(sec_channel_bind, _channel_binding_token.Length, true))
{
binding.Data.WriteBytes(_channel_binding_token);
return(SecBuffer.Create(SecurityBufferType.ChannelBindings | SecurityBufferType.ReadOnly, binding.ToArray(), list));
}
}
public void ExImportSecurityContextTest()
{
using (var hCred = AcqCredHandle())
using (var hCtx = GetSecContext(hCred, out _))
{
var secBuf = new SecBuffer(SecBufferType.SECBUFFER_EMPTY);
Assert.That(ExportSecurityContext(hCtx, SECPKG_CONTEXT_EXPORT.SECPKG_CONTEXT_EXPORT_RESET_NEW, ref secBuf, out var hTok), Is.EqualTo((HRESULT)HRESULT.SEC_E_UNSUPPORTED_FUNCTION));
Assert.That(secBuf.pvBuffer, Is.EqualTo(IntPtr.Zero));
var hBuf = new SafeContextBuffer(secBuf.pvBuffer);
Assert.That(ImportSecurityContext(MICROSOFT_KERBEROS_NAME, ref secBuf, hTok, out var hNewCtx), Is.EqualTo((HRESULT)HRESULT.SEC_E_INVALID_TOKEN));
}
}
internal override void FromBuffer(SecBuffer buffer)
{
if (buffer.pvBuffer == IntPtr.Zero)
{
_array = new byte[0];
return;
}
_array = new byte[buffer.cbBuffer];
Marshal.Copy(buffer.pvBuffer, _array, 0, _array.Length);
SecurityNativeMethods.FreeContextBuffer(buffer.pvBuffer);
buffer.pvBuffer = IntPtr.Zero;
_type = buffer.BufferType;
}
/// <summary>
/// Marshals all the SecBuffers into a byte array.
/// </summary>
/// <returns>Byte array representation of all the SecBuffers contained in this SecBufferDesc</returns>
public byte[] GetSecBufferByteArray()
{
byte[] buffer = null;
if (pBuffers == IntPtr.Zero)
{
throw new ObjectDisposedException("pBuffers");
}
if (cBuffers == 1)
{
SecBuffer ThisSecBuffer = (SecBuffer)Marshal.PtrToStructure(pBuffers, typeof(SecBuffer));
if (ThisSecBuffer.cbBuffer > 0)
{
buffer = new byte[ThisSecBuffer.cbBuffer];
Marshal.Copy(ThisSecBuffer.pvBuffer, buffer, 0, ThisSecBuffer.cbBuffer);
}
}
else
{
int bytesToAllocate = 0;
// The bits were written out the following order:
// int cbBuffer;
// int BufferType;
// pvBuffer;
// calculate the total size of the buffer
for (int Index = 0; Index < cBuffers; Index++)
{
int currentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
bytesToAllocate += Marshal.ReadInt32(pBuffers, currentOffset);
}
buffer = new byte[bytesToAllocate];
// copy to the destination buffer
for (int Index = 0, bufferIndex = 0; Index < cBuffers; Index++)
{
int currentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
int bytesToCopy = Marshal.ReadInt32(pBuffers, currentOffset);
IntPtr secBufferpvBuffer = Marshal.ReadIntPtr(pBuffers, currentOffset + Marshal.SizeOf(typeof(int)) + Marshal.SizeOf(typeof(int)));
Marshal.Copy(secBufferpvBuffer, buffer, bufferIndex, bytesToCopy);
bufferIndex += bytesToCopy;
}
}
return(buffer);
}
private bool GenClientContext(AuthenticationToken token)
{
using (DisposableList list = new DisposableList())
{
SecStatusCode result = 0;
SecBuffer out_sec_buffer = list.AddResource(new SecBuffer(SecBufferType.Token, 64 * 1024));
SecBufferDesc out_buffer_desc = list.AddResource(new SecBufferDesc(out_sec_buffer));
InitializeContextRetFlags flags;
LargeInteger expiry = new LargeInteger();
if (token != null)
{
List <SecBuffer> buffers = new List <SecBuffer>();
buffers.Add(list.AddResource(new SecBuffer(SecBufferType.Token, token.ToArray())));
if (_channel_binding != null)
{
buffers.Add(list.AddResource(SecBuffer.CreateForChannelBinding(_channel_binding)));
}
SecBufferDesc in_buffer_desc = list.AddResource(new SecBufferDesc(buffers.ToArray()));
result = SecurityNativeMethods.InitializeSecurityContext(_creds.CredHandle, _context, _target, _req_attributes, 0,
_data_rep, in_buffer_desc, 0, _context, out_buffer_desc, out flags, expiry).CheckResult();
Flags = flags;
}
else
{
SecBufferDesc in_buffer_desc = null;
List <SecBuffer> buffers = new List <SecBuffer>();
if (_channel_binding != null)
{
buffers.Add(list.AddResource(SecBuffer.CreateForChannelBinding(_channel_binding)));
in_buffer_desc = list.AddResource(new SecBufferDesc(buffers.ToArray()));
}
result = SecurityNativeMethods.InitializeSecurityContext(_creds.CredHandle, null, _target,
_req_attributes, 0, _data_rep, in_buffer_desc, 0, _context,
out_buffer_desc, out flags, expiry).CheckResult();
}
Expiry = expiry.QuadPart;
Flags = flags;
if (result == SecStatusCode.CompleteNeeded || result == SecStatusCode.CompleteAndContinue)
{
SecurityNativeMethods.CompleteAuthToken(_context, out_buffer_desc).CheckResult();
}
Token = AuthenticationToken.Parse(_creds.PackageName, _token_count++, true, out_buffer_desc.ToArray()[0].ToArray());
return(!(result == SecStatusCode.ContinueNeeded || result == SecStatusCode.CompleteAndContinue));
}
}
public IntPtr pBuffers; //Point to SecBuffer
public SecBufferDesc(int bufferSize)
{
ulVersion = (int)SecBufferType.SECBUFFER_VERSION;
if (bufferSize < 0)
{
cBuffers = 0;
pBuffers = IntPtr.Zero;
}
else
{
cBuffers = 1;
SecBuffer ThisSecBuffer = new SecBuffer(bufferSize);
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(ThisSecBuffer));
Marshal.StructureToPtr(ThisSecBuffer, pBuffers, false);
}
}
private void ForEachBuffer(Action <SecBuffer> onBuffer)
{
for (int Index = 0; Index < cBuffers; Index++)
{
int CurrentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
SecBuffer thisSecBuffer = (SecBuffer)Marshal.PtrToStructure(
IntPtr.Add(
pBuffers,
CurrentOffset
),
typeof(SecBuffer)
);
onBuffer(thisSecBuffer);
}
}
public NTLMExecutor()
{
client_buffer = new SecBuffer();
client_desc = new SecBufferDesc();
server_buffer = new SecBuffer();
server_desc = new SecBufferDesc();
cred_handle = new SECURITY_HANDLE(0);
ctxt_handle = new SECURITY_HANDLE(0);
p_cred_handle = Marshal.AllocHGlobal(Marshal.SizeOf(cred_handle));
Marshal.StructureToPtr(cred_handle, p_cred_handle, false);
p_ctxt_handle = Marshal.AllocHGlobal(Marshal.SizeOf(ctxt_handle));
Marshal.StructureToPtr(ctxt_handle, p_ctxt_handle, false);
p_elevated_handle = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(IntPtr)));
}
/// <summary>
/// Dispose the SecBufferDesc and all the SecBuffers it contains.
/// </summary>
public void Dispose()
{
if (pBuffers != IntPtr.Zero)
{
if (cBuffers == 1)
{
SecBuffer ThisSecBuffer = (SecBuffer)Marshal.PtrToStructure(pBuffers, typeof(SecBuffer));
ThisSecBuffer.Dispose();
}
else
{
for (int Index = 0; Index < cBuffers; Index++)
{
int currentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
IntPtr secBufferpvBuffer = Marshal.ReadIntPtr(pBuffers, currentOffset + Marshal.SizeOf(typeof(int)) + Marshal.SizeOf(typeof(int)));
Marshal.FreeHGlobal(secBufferpvBuffer);
}
}
Marshal.FreeHGlobal(pBuffers);
pBuffers = IntPtr.Zero;
}
}
/// <summary>
/// Constructs a SecBufferDesc with a single SecBuffer initialized from the
/// byte array secBufferBytes.
/// </summary>
/// <param name="secBufferBytes">The SecBuffer to add to this SecBufferDesc</param>
public SecBufferDesc(byte[] secBufferBytes)
{
ulVersion = SECBUFFER_VERSION;
cBuffers = 1;
SecBuffer ThisSecBuffer = new SecBuffer(secBufferBytes);
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(ThisSecBuffer));
Marshal.StructureToPtr(ThisSecBuffer, pBuffers, false);
}
internal abstract void FromBuffer(SecBuffer buffer);
public IntPtr pBuffers; //Point to SecBuffer
#region Constructors
public SecBufferDesc(int bufferSize)
{
ulVersion = (int)SecBufferType.SECBUFFER_VERSION;
if (bufferSize < 0)
{
cBuffers = 0;
pBuffers = IntPtr.Zero;
}
else
{
cBuffers = 1;
SecBuffer ThisSecBuffer = new SecBuffer(bufferSize);
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(ThisSecBuffer));
Marshal.StructureToPtr(ThisSecBuffer, pBuffers, false);
}
}
public IntPtr pBuffers; //Point to SecBuffer
public SecBufferDesc(int bufferSize)
{
ulVersion = (int)SecBufferType.SECBUFFER_VERSION;
cBuffers = 1;
SecBuffer secBuffer = new SecBuffer(bufferSize);
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(secBuffer));
Marshal.StructureToPtr(secBuffer, pBuffers, false);
}
internal byte[] Continue([CanBeNull] byte[] authData)
{
if (authData == null && _isSSPICtxSet)
throw new InvalidOperationException("The authData parameter con only be null at the first call to continue!");
var outBuffer = new SecBuffer
{
pvBuffer = IntPtr.Zero,
BufferType = SecbufferToken,
cbBuffer = 0
};
var outbuf = new SecBufferDesc
{
cBuffers = 1,
ulVersion = SecbufferVersion,
pBuffer = Marshal.AllocHGlobal(Marshal.SizeOf(outBuffer))
};
try
{
int status;
SecHandle newContext;
SecHandle expire;
int contextAttr;
Marshal.StructureToPtr(outBuffer, outbuf.pBuffer, false);
if (_isSSPICtxSet)
{
Contract.Assert(authData != null);
var inbuf = new SecBufferDesc { pBuffer = IntPtr.Zero };
var inBuffer = new SecBuffer { pvBuffer = Marshal.AllocHGlobal(authData.Length) };
try
{
Marshal.Copy(authData, 0, inBuffer.pvBuffer, authData.Length);
inBuffer.cbBuffer = authData.Length;
inBuffer.BufferType = SecbufferToken;
inbuf.ulVersion = SecbufferVersion;
inbuf.cBuffers = 1;
inbuf.pBuffer = Marshal.AllocHGlobal(Marshal.SizeOf(inBuffer));
Marshal.StructureToPtr(inBuffer, inbuf.pBuffer, false);
status = InitializeSecurityContext(
ref _sspiCred,
ref _sspiCtx,
_sspiTarget,
IscReqAllocateMemory,
0,
SecurityNetworkDrep,
ref inbuf,
0,
out newContext,
out outbuf,
out contextAttr,
out expire
);
}
finally
{
if (inBuffer.pvBuffer != IntPtr.Zero)
Marshal.FreeHGlobal(inBuffer.pvBuffer);
if (inbuf.pBuffer != IntPtr.Zero)
Marshal.FreeHGlobal(inbuf.pBuffer);
}
}
else
{
status = InitializeSecurityContext(
ref _sspiCred,
IntPtr.Zero,
_sspiTarget,
IscReqAllocateMemory,
0,
SecurityNetworkDrep,
IntPtr.Zero,
0,
out newContext,
out outbuf,
out contextAttr,
out expire
);
}
if (status != SecEOk && status != SecIContinueNeeded)
{
// This will automaticcaly fill in the message of the last Win32 error
throw new Win32Exception();
}
if (!_isSSPICtxSet)
{
_sspiCtx.dwUpper = newContext.dwUpper;
_sspiCtx.dwLower = newContext.dwLower;
_isSSPICtxSet = true;
}
if (outbuf.cBuffers > 0)
{
if (outbuf.cBuffers != 1)
throw new InvalidOperationException("SSPI returned invalid number of output buffers");
// attention: OutBuffer is still our initially created struct but outbuf.pBuffer doesn't point to
// it but to the copy of it we created on the unmanaged heap and passed to InitializeSecurityContext()
// we have to marshal it back to see the content change
#if NET45
outBuffer = (SecBuffer)Marshal.PtrToStructure(outbuf.pBuffer, typeof(SecBuffer));
#else
outBuffer = Marshal.PtrToStructure<SecBuffer>(outbuf.pBuffer);
#endif
if (outBuffer.cbBuffer > 0)
{
// we need the buffer with a terminating 0 so we
// make it one byte bigger
var buffer = new byte[outBuffer.cbBuffer];
Marshal.Copy(outBuffer.pvBuffer, buffer, 0, buffer.Length);
// The SSPI authentication data must be sent as password message
return buffer;
//stream.WriteByte((byte)'p');
//PGUtil.WriteInt32(stream, buffer.Length + 5);
//stream.Write(buffer, 0, buffer.Length);
//stream.Flush();
}
}
return PGUtil.EmptyBuffer;
}
finally
{
if (outBuffer.pvBuffer != IntPtr.Zero)
FreeContextBuffer(outBuffer.pvBuffer);
if (outbuf.pBuffer != IntPtr.Zero)
Marshal.FreeHGlobal(outbuf.pBuffer);
}
}
internal override void FromBuffer(SecBuffer buffer)
{
}
internal override SecBuffer ToBuffer(DisposableList list)
{
return(SecBuffer.Create(_type, _size, list));
}
internal override void FromBuffer(SecBuffer buffer)
{
_array = buffer.ToArray();
_size = _array.Length;
_type = buffer.BufferType;
}