public void SetSecBuffer(ref SecBufferEx secBuffer, SspiContext context)
{
secBuffer.Buffer = context.Buffer.Array;
secBuffer.Offset = context.Buffer.Offset;
secBuffer.Size = context.Buffer.BytesTransferred;
}
private bool Handshake(ServerAsyncEventArgs ie, Server <C> .Connection <C> connection)
{
int num = 0;
ServerAsyncEventArgs serverAsyncEventArgs = null;
SspiContext sspiContext = connection.SspiContext;
SecBufferDescEx secBufferDescEx = sspiContext.SecBufferDesc2[0];
SecBufferDescEx secBufferDescEx2 = sspiContext.SecBufferDesc2[1];
bool result;
try
{
if (sspiContext.Buffer.IsValid && ie != null && !sspiContext.Buffer.CopyTransferredFrom(ie, 0))
{
result = false;
}
else
{
while (true)
{
secBufferDescEx.Buffers[0].BufferType = BufferType.SECBUFFER_TOKEN;
if (sspiContext.Buffer.IsValid)
{
this.SetSecBuffer(ref secBufferDescEx.Buffers[0], sspiContext);
}
else
{
this.SetSecBuffer(ref secBufferDescEx.Buffers[0], ie);
}
secBufferDescEx.Buffers[1].SetBufferEmpty();
if (serverAsyncEventArgs == null)
{
serverAsyncEventArgs = EventArgsManager.Get();
}
serverAsyncEventArgs.AllocateBuffer();
secBufferDescEx2.Buffers[0].BufferType = BufferType.SECBUFFER_TOKEN;
secBufferDescEx2.Buffers[0].Size = serverAsyncEventArgs.Count;
secBufferDescEx2.Buffers[0].Buffer = serverAsyncEventArgs.Buffer;
secBufferDescEx2.Buffers[0].Offset = serverAsyncEventArgs.Offset;
secBufferDescEx2.Buffers[1].SetBufferEmpty();
int contextReq = 98332;
SafeCtxtHandle handle = sspiContext.Handle.IsInvalid ? new SafeCtxtHandle() : sspiContext.Handle;
long num2;
SecurityStatus securityStatus = Sspi.SafeAcceptSecurityContext(ref this.credential, ref sspiContext.Handle, ref secBufferDescEx, contextReq, TargetDataRep.SECURITY_NATIVE_DREP, ref handle, ref secBufferDescEx2, out num, out num2);
if (sspiContext.Handle.IsInvalid)
{
sspiContext.Handle = handle;
}
SecurityStatus securityStatus2 = securityStatus;
if (securityStatus2 == (SecurityStatus)2148074264u)
{
break;
}
if (securityStatus2 != (SecurityStatus)2148074273u)
{
if ((securityStatus == SecurityStatus.SEC_I_CONTINUE_NEEDED || securityStatus == SecurityStatus.SEC_E_OK || (Sspi.Failed(securityStatus) && (num & 32768) != 0)) && secBufferDescEx2.Buffers[0].Size > 0)
{
serverAsyncEventArgs.Count = secBufferDescEx2.Buffers[0].Size;
serverAsyncEventArgs.CopyAddressesFrom(ie);
serverAsyncEventArgs.LocalEndPoint = base.GetLocalEndpoint(ie.RemoteEndPoint.Address);
base.SendAsync(connection, serverAsyncEventArgs);
serverAsyncEventArgs = null;
}
int bufferIndex = secBufferDescEx.GetBufferIndex(BufferType.SECBUFFER_EXTRA, 0);
if (bufferIndex < 0)
{
sspiContext.Buffer.Free();
}
else if (sspiContext.Buffer.IsInvalid)
{
if (!sspiContext.Buffer.CopyTransferredFrom(ie, ie.BytesTransferred - secBufferDescEx.Buffers[bufferIndex].Size))
{
goto Block_21;
}
}
else
{
sspiContext.Buffer.MoveToBegin(sspiContext.Buffer.BytesTransferred - secBufferDescEx.Buffers[bufferIndex].Size, secBufferDescEx.Buffers[bufferIndex].Size);
}
SecurityStatus securityStatus3 = securityStatus;
if (securityStatus3 == SecurityStatus.SEC_E_OK)
{
goto IL_2FF;
}
if (securityStatus3 != SecurityStatus.SEC_I_CONTINUE_NEEDED)
{
goto Block_23;
}
if (bufferIndex < 0)
{
goto Block_25;
}
}
else
{
if (serverAsyncEventArgs.Count >= this.maxTokenSize)
{
goto IL_1DC;
}
serverAsyncEventArgs.Count = this.maxTokenSize;
serverAsyncEventArgs.ReAllocateBuffer(false);
}
}
if (sspiContext.Buffer.IsInvalid && !sspiContext.Buffer.CopyTransferredFrom(ie, 0))
{
result = false;
return(result);
}
result = true;
return(result);
IL_1DC:
result = false;
return(result);
Block_21:
result = false;
return(result);
Block_23:
result = false;
return(result);
IL_2FF:
if (Sspi.SafeQueryContextAttributes(ref sspiContext.Handle, out sspiContext.StreamSizes) != SecurityStatus.SEC_E_OK)
{
result = false;
return(result);
}
sspiContext.Connected = true;
this.OnNewConnection(connection);
result = true;
return(result);
Block_25:
result = true;
}
}
finally
{
if (serverAsyncEventArgs != null)
{
EventArgsManager.Put(ref serverAsyncEventArgs);
}
}
return(result);
}
public override void SendAsync(ServerAsyncEventArgs e)
{
try
{
Server <C> .Connection <C> tcpConnection = base.GetTcpConnection(e.RemoteEndPoint);
base.OnBeforeSend(tcpConnection, e);
if (tcpConnection == null)
{
e.Completed = new ServerAsyncEventArgs.CompletedEventHandler(base.Send_Completed);
e.SocketError = SocketError.NotConnected;
e.OnCompleted(null);
}
else
{
SspiContext sspiContext = tcpConnection.SspiContext;
SecPkgContext_StreamSizes streamSizes = sspiContext.StreamSizes;
int count = e.Count;
if (e.OffsetOffset < streamSizes.cbHeader)
{
throw new NotImplementedException("Ineffective way not implemented. Need to move buffer for SECBUFFER_STREAM_HEADER.");
}
e.OffsetOffset -= streamSizes.cbHeader;
e.Count = streamSizes.cbHeader + count + streamSizes.cbTrailer;
e.ReAllocateBuffer(true);
SecBufferDescEx secBufferDescEx = new SecBufferDescEx(new SecBufferEx[]
{
new SecBufferEx
{
BufferType = BufferType.SECBUFFER_STREAM_HEADER,
Buffer = e.Buffer,
Size = streamSizes.cbHeader,
Offset = e.Offset
},
new SecBufferEx
{
BufferType = BufferType.SECBUFFER_DATA,
Buffer = e.Buffer,
Size = count,
Offset = e.Offset + streamSizes.cbHeader
},
new SecBufferEx
{
BufferType = BufferType.SECBUFFER_STREAM_TRAILER,
Buffer = e.Buffer,
Size = streamSizes.cbTrailer,
Offset = e.Offset + streamSizes.cbHeader + count
},
new SecBufferEx
{
BufferType = BufferType.SECBUFFER_VERSION
}
});
Sspi.EncryptMessage(ref sspiContext.Handle, ref secBufferDescEx, 0u, null);
e.Count = secBufferDescEx.Buffers[0].Size + secBufferDescEx.Buffers[1].Size + secBufferDescEx.Buffers[2].Size;
e.ReAllocateBuffer(true);
base.SendAsync(tcpConnection, e);
}
}
catch (SspiException error)
{
e.SocketError = SocketError.Fault;
this.OnFailed(new ServerInfoEventArgs(this.realEndPoint, error));
}
}
private bool DecryptData(ref ServerAsyncEventArgs e, Server <C> .Connection <C> connection)
{
SspiContext sspiContext = connection.SspiContext;
SecBufferDescEx secBufferDesc = sspiContext.SecBufferDesc5;
if (sspiContext.Buffer.IsValid && e != null && !sspiContext.Buffer.CopyTransferredFrom(e, 0))
{
return(false);
}
SecurityStatus securityStatus2;
while (true)
{
secBufferDesc.Buffers[0].BufferType = BufferType.SECBUFFER_DATA;
if (sspiContext.Buffer.IsValid)
{
this.SetSecBuffer(ref secBufferDesc.Buffers[0], sspiContext);
}
else
{
this.SetSecBuffer(ref secBufferDesc.Buffers[0], e);
}
secBufferDesc.Buffers[1].SetBufferEmpty();
secBufferDesc.Buffers[2].SetBufferEmpty();
secBufferDesc.Buffers[3].SetBufferEmpty();
secBufferDesc.Buffers[4].SetBufferEmpty();
SecurityStatus securityStatus = Sspi.SafeDecryptMessage(ref sspiContext.Handle, ref secBufferDesc, 0u, null);
int bufferIndex = secBufferDesc.GetBufferIndex(BufferType.SECBUFFER_EXTRA, 0);
int bufferIndex2 = secBufferDesc.GetBufferIndex(BufferType.SECBUFFER_DATA, 0);
securityStatus2 = securityStatus;
if (securityStatus2 != SecurityStatus.SEC_E_OK)
{
break;
}
if (bufferIndex2 < 0)
{
return(false);
}
if (sspiContext.Buffer.IsInvalid)
{
if (bufferIndex >= 0 && !sspiContext.Buffer.CopyFrom(secBufferDesc.Buffers[bufferIndex]))
{
return(false);
}
e.Offset = secBufferDesc.Buffers[bufferIndex2].Offset;
e.BytesTransferred = secBufferDesc.Buffers[bufferIndex2].Size;
e.SetMaxCount();
if (!this.OnReceived(connection, ref e))
{
return(false);
}
}
else
{
ArraySegment <byte> buffer = sspiContext.Buffer.Detach();
if (bufferIndex >= 0 && !sspiContext.Buffer.CopyFrom(secBufferDesc.Buffers[bufferIndex]))
{
return(false);
}
ServerAsyncEventArgs serverAsyncEventArgs = EventArgsManager.Get();
base.PrepareEventArgs(connection, serverAsyncEventArgs);
serverAsyncEventArgs.AttachBuffer(buffer);
serverAsyncEventArgs.Offset = secBufferDesc.Buffers[bufferIndex2].Offset;
serverAsyncEventArgs.BytesTransferred = secBufferDesc.Buffers[bufferIndex2].Size;
serverAsyncEventArgs.SetMaxCount();
bool flag = this.OnReceived(connection, ref serverAsyncEventArgs);
if (serverAsyncEventArgs != null)
{
EventArgsManager.Put(serverAsyncEventArgs);
}
if (!flag)
{
return(false);
}
}
if (bufferIndex < 0)
{
return(true);
}
}
return(securityStatus2 != SecurityStatus.SEC_I_RENEGOTIATE && securityStatus2 == (SecurityStatus)2148074264u && (!sspiContext.Buffer.IsInvalid || sspiContext.Buffer.CopyTransferredFrom(e, 0)));
}
