public static SafeFreeContextBufferChannelBinding QueryContextChannelBinding(SSPIInterface secModule, SafeDeleteContext securityContext, Interop.Secur32.ContextAttribute contextAttribute)
{
GlobalLog.Enter("QueryContextChannelBinding", contextAttribute.ToString());
SafeFreeContextBufferChannelBinding result;
int errorCode = secModule.QueryContextChannelBinding(securityContext, contextAttribute, out result);
if (errorCode != 0)
{
GlobalLog.Leave("QueryContextChannelBinding", "ERROR = " + ErrorDescription(errorCode));
return(null);
}
GlobalLog.Leave("QueryContextChannelBinding", Logging.HashString(result));
return(result);
}
private object QueryContextAttributes(SafeDeleteContext securityContext, Interop.Secur32.ContextAttribute contextAttribute, out int errorCode)
{
GlobalLog.Enter("QueryContextAttributes", contextAttribute.ToString());
int nativeBlockSize = IntPtr.Size;
Type handleType = null;
switch (contextAttribute)
{
case Interop.Secur32.ContextAttribute.Sizes:
nativeBlockSize = SecSizes.SizeOf;
break;
case Interop.Secur32.ContextAttribute.StreamSizes:
nativeBlockSize = StreamSizes.SizeOf;
break;
case Interop.Secur32.ContextAttribute.Names:
handleType = typeof(SafeFreeContextBuffer);
break;
case Interop.Secur32.ContextAttribute.PackageInfo:
handleType = typeof(SafeFreeContextBuffer);
break;
case Interop.Secur32.ContextAttribute.NegotiationInfo:
handleType = typeof(SafeFreeContextBuffer);
nativeBlockSize = Marshal.SizeOf <NegotiationInfo>();
break;
case Interop.Secur32.ContextAttribute.ClientSpecifiedSpn:
handleType = typeof(SafeFreeContextBuffer);
break;
case Interop.Secur32.ContextAttribute.RemoteCertificate:
handleType = typeof(SafeFreeCertContext);
break;
case Interop.Secur32.ContextAttribute.LocalCertificate:
handleType = typeof(SafeFreeCertContext);
break;
case Interop.Secur32.ContextAttribute.IssuerListInfoEx:
nativeBlockSize = Marshal.SizeOf <Interop.Secur32.IssuerListInfoEx>();
handleType = typeof(SafeFreeContextBuffer);
break;
case Interop.Secur32.ContextAttribute.ConnectionInfo:
nativeBlockSize = Marshal.SizeOf <SslConnectionInfo>();
break;
default:
throw new ArgumentException(SR.Format(SR.net_invalid_enum, "ContextAttribute"), "contextAttribute");
}
SafeHandle SspiHandle = null;
object attribute = null;
try
{
byte[] nativeBuffer = new byte[nativeBlockSize];
errorCode = QueryContextAttributes(securityContext, contextAttribute, nativeBuffer, handleType, out SspiHandle);
if (errorCode != 0)
{
GlobalLog.Leave("Win32:QueryContextAttributes", "ERROR = " + ErrorDescription(errorCode));
return(null);
}
switch (contextAttribute)
{
case Interop.Secur32.ContextAttribute.Sizes:
attribute = new SecSizes(nativeBuffer);
break;
case Interop.Secur32.ContextAttribute.StreamSizes:
attribute = new StreamSizes(nativeBuffer);
break;
case Interop.Secur32.ContextAttribute.Names:
attribute = Marshal.PtrToStringUni(SspiHandle.DangerousGetHandle());
break;
case Interop.Secur32.ContextAttribute.PackageInfo:
attribute = new SecurityPackageInfoClass(SspiHandle, 0);
break;
case Interop.Secur32.ContextAttribute.NegotiationInfo:
unsafe
{
fixed(void *ptr = nativeBuffer)
{
attribute = new NegotiationInfoClass(SspiHandle, Marshal.ReadInt32(new IntPtr(ptr), NegotiationInfo.NegotiationStateOffest));
}
}
break;
case Interop.Secur32.ContextAttribute.ClientSpecifiedSpn:
attribute = Marshal.PtrToStringUni(SspiHandle.DangerousGetHandle());
break;
case Interop.Secur32.ContextAttribute.LocalCertificate:
goto case Interop.Secur32.ContextAttribute.RemoteCertificate;
case Interop.Secur32.ContextAttribute.RemoteCertificate:
attribute = SspiHandle;
SspiHandle = null;
break;
case Interop.Secur32.ContextAttribute.IssuerListInfoEx:
attribute = new Interop.Secur32.IssuerListInfoEx(SspiHandle, nativeBuffer);
SspiHandle = null;
break;
case Interop.Secur32.ContextAttribute.ConnectionInfo:
attribute = new SslConnectionInfo(nativeBuffer);
break;
default:
// Will return null.
break;
}
}
finally
{
if (SspiHandle != null)
{
SspiHandle.Dispose();
}
}
GlobalLog.Leave("QueryContextAttributes", Logging.ObjectToString(attribute));
return(attribute);
}