/// <summary>
/// Queries for context properties
/// </summary>
private SSPINative.SecPkgContext_Sizes GetContextSizes()
{
// check object state
if (_disposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
// query context properties
SSPINative.SecPkgContext_Sizes contextSizes = new SSPINative.SecPkgContext_Sizes();
GCHandle gcSizes = GCHandle.Alloc(contextSizes, GCHandleType.Pinned);
int error = SSPINative.QueryContextAttributes(
ref _contextHandle,
SSPINative.SECPKG_ATTR_SIZES,
gcSizes.AddrOfPinnedObject());
gcSizes.Free();
if (error < 0)
{
throw new SSPIException(error, "Could not query security context information");
}
return(contextSizes);
}
