private void Dispose(bool disposing)
{
lock (this.syncObject)
{
if (this.disposed == false)
{
this.disposed = true;
if (disposing)
{
if (this.securityContext != null)
{
this.securityContext.Close();
this.securityContext = null;
}
if (this.credentialsHandle != null)
{
this.credentialsHandle.Close();
this.credentialsHandle = null;
}
}
// set to null any references that aren't finalizable
this.connectionInfo = null;
this.destination = null;
this.streamSizes = null;
}
}
}
public static void QueryContextStreamSizes(SafeDeleteContext securityContext, out StreamSizes streamSizes)
{
var interopStreamSizes = SSPIWrapper.QueryContextAttributes(
GlobalSSPI.SSPISecureChannel,
securityContext,
Interop.SspiCli.ContextAttribute.SECPKG_ATTR_STREAM_SIZES) as SecPkgContext_StreamSizes;
streamSizes = new StreamSizes(interopStreamSizes);
}
internal void ProcessHandshakeSuccess()
{
StreamSizes sizes = SSPIWrapper.QueryContextAttributes(GlobalSSPI.SSPISecureChannel, this.m_SecurityContext, ContextAttribute.StreamSizes) as StreamSizes;
if (sizes != null)
{
try
{
this.m_HeaderSize = sizes.header;
this.m_TrailerSize = sizes.trailer;
this.m_MaxDataSize = sizes.maximumMessage - (this.m_HeaderSize + this.m_TrailerSize);
}
catch (Exception exception)
{
NclUtilities.IsFatal(exception);
throw;
}
}
this.m_ConnectionInfo = SSPIWrapper.QueryContextAttributes(GlobalSSPI.SSPISecureChannel, this.m_SecurityContext, ContextAttribute.ConnectionInfo) as SslConnectionInfo;
}
public static void QueryContextStreamSizes(
SafeDeleteContext?securityContext,
out StreamSizes streamSizes)
{
streamSizes = StreamSizes.Default;
}
public static void QueryContextStreamSizes(SafeDeleteContext securityContext, out StreamSizes streamSizes)
{
streamSizes = s_streamSizes;
}
public static void QueryContextStreamSizes(SafeDeleteContext securityContext, out StreamSizes streamSizes)
{
var interopStreamSizes = SSPIWrapper.QueryContextAttributes(
GlobalSSPI.SSPISecureChannel,
securityContext,
Interop.SspiCli.ContextAttribute.SECPKG_ATTR_STREAM_SIZES) as SecPkgContext_StreamSizes;
streamSizes = new StreamSizes(interopStreamSizes);
}
public static void QueryContextStreamSizes(SafeDeleteContext securityContext, out StreamSizes streamSizes)
{
streamSizes = s_streamSizes;
}
public static unsafe object QueryContextAttributes(
SafeDeleteContext securityContext,
ContextAttribute contextAttribute)
{
int nativeBlockSize = IntPtr.Size;
Type handleType = null;
switch (contextAttribute)
{
case ContextAttribute.Flags:
break;
case ContextAttribute.Sizes:
nativeBlockSize = SecSizes.SizeOf;
break;
case ContextAttribute.StreamSizes:
nativeBlockSize = StreamSizes.SizeOf;
break;
case ContextAttribute.Names:
handleType = typeof(SafeFreeContextBuffer);
break;
case ContextAttribute.PackageInfo:
handleType = typeof(SafeFreeContextBuffer);
break;
case ContextAttribute.NegotiationInfo:
handleType = typeof(SafeFreeContextBuffer);
nativeBlockSize = Marshal.SizeOf(typeof(NegotiationInfo));
break;
case ContextAttribute.RemoteCertificate:
handleType = typeof(SafeFreeCertContext);
break;
case ContextAttribute.LocalCertificate:
handleType = typeof(SafeFreeCertContext);
break;
case ContextAttribute.ConnectionInfo:
nativeBlockSize = Marshal.SizeOf(typeof(SslConnectionInfo));
break;
case ContextAttribute.Lifespan:
nativeBlockSize = LifeSpan_Struct.Size;
break;
case ContextAttribute.SessionKey:
handleType = typeof(SafeFreeContextBuffer);
nativeBlockSize = SecPkgContext_SessionKey.Size;
break;
default:
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidEnumArgumentException("contextAttribute", (int)contextAttribute,
typeof(ContextAttribute)));
}
SafeHandle sspiHandle = null;
object attribute = null;
try
{
byte[] nativeBuffer = new byte[nativeBlockSize];
int errorCode = QueryContextAttributes(securityContext, contextAttribute, nativeBuffer, handleType, out sspiHandle);
if (errorCode != 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(errorCode));
}
switch (contextAttribute)
{
case ContextAttribute.Flags:
fixed (byte* pnativeBuffer = nativeBuffer)
{
attribute = (object)Marshal.ReadInt32(new IntPtr(pnativeBuffer));
}
break;
case ContextAttribute.Sizes:
attribute = new SecSizes(nativeBuffer);
break;
case ContextAttribute.StreamSizes:
attribute = new StreamSizes(nativeBuffer);
break;
case ContextAttribute.Names:
attribute = Marshal.PtrToStringUni(sspiHandle.DangerousGetHandle());
break;
case ContextAttribute.PackageInfo:
attribute = new SecurityPackageInfoClass(sspiHandle, 0);
break;
case ContextAttribute.NegotiationInfo:
unsafe
{
fixed (void* ptr = nativeBuffer)
{
attribute = new NegotiationInfoClass(sspiHandle, Marshal.ReadInt32(new IntPtr(ptr), NegotiationInfo.NegotiationStateOffset));
}
}
break;
case ContextAttribute.LocalCertificate:
goto case ContextAttribute.RemoteCertificate;
case ContextAttribute.RemoteCertificate:
attribute = sspiHandle;
sspiHandle = null;
break;
case ContextAttribute.ConnectionInfo:
attribute = new SslConnectionInfo(nativeBuffer);
break;
case ContextAttribute.Lifespan:
attribute = new LifeSpan(nativeBuffer);
break;
case ContextAttribute.SessionKey:
unsafe
{
fixed (void* ptr = nativeBuffer)
{
attribute = new SecuritySessionKeyClass(sspiHandle, Marshal.ReadInt32(new IntPtr(ptr)));
}
}
break;
default:
// will return null
break;
}
}
finally
{
if (sspiHandle != null)
{
sspiHandle.Close();
}
}
return attribute;
}