public unsafe string QueryContextAttributeAsString(SecurityContextAttribute attr)
{
SecPkgContext_SecString pBuffer = default;
SecStatus status;
string strValue = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
status = QueryContextAttributesString(ref this.securityContext, attr, ref pBuffer);
if (status == SecStatus.SEC_E_OK)
{
try
{
strValue = Marshal.PtrToStringUni((IntPtr)pBuffer.sValue);
}
finally
{
ThrowIfError(FreeContextBuffer(pBuffer.sValue));
}
}
}
if (status != SecStatus.SEC_E_UNSUPPORTED_FUNCTION && status > SecStatus.SEC_E_ERROR)
{
throw new Win32Exception((int)status);
}
return(strValue);
}
internal static extern SecStatus QueryContextAttributesString(
ref SECURITY_HANDLE phContext,
SecurityContextAttribute ulAttribute,
ref SecPkgContext_SecString pBuffer
);
