internal unsafe X509ChainElement(IntPtr pChainElement)
{
CAPI.CERT_CHAIN_ELEMENT chainElement = new CAPI.CERT_CHAIN_ELEMENT(Marshal.SizeOf(typeof(CAPI.CERT_CHAIN_ELEMENT)));
uint cbSize = (uint)Marshal.ReadInt32(pChainElement);
if (cbSize > Marshal.SizeOf(chainElement))
{
cbSize = (uint)Marshal.SizeOf(chainElement);
}
X509Utils.memcpy(pChainElement, new IntPtr(&chainElement), cbSize);
m_certificate = new X509Certificate2(chainElement.pCertContext);
if (chainElement.pwszExtendedErrorInfo == IntPtr.Zero)
{
m_description = String.Empty;
}
else
{
m_description = Marshal.PtrToStringUni(chainElement.pwszExtendedErrorInfo);
}
// We give the user a reference to the array since we'll never access it.
if (chainElement.dwErrorStatus == 0)
{
m_chainStatus = new X509ChainStatus[0]; // empty array
}
else
{
m_chainStatus = X509Chain.GetChainStatusInformation(chainElement.dwErrorStatus);
}
}
internal unsafe X509ChainElementCollection(IntPtr pSimpleChain)
{
CAPI.CERT_SIMPLE_CHAIN simpleChain = new CAPI.CERT_SIMPLE_CHAIN(Marshal.SizeOf(typeof(CAPI.CERT_SIMPLE_CHAIN)));
uint cbSize = (uint)Marshal.ReadInt32(pSimpleChain);
if (cbSize > Marshal.SizeOf(simpleChain))
{
cbSize = (uint)Marshal.SizeOf(simpleChain);
}
X509Utils.memcpy(pSimpleChain, new IntPtr(&simpleChain), cbSize);
m_elements = new X509ChainElement[simpleChain.cElement];
for (int index = 0; index < m_elements.Length; index++)
{
m_elements[index] = new X509ChainElement(Marshal.ReadIntPtr(new IntPtr((long)simpleChain.rgpElement + index * Marshal.SizeOf(typeof(IntPtr)))));
}
}
private unsafe void Init()
{
using (SafeCertChainHandle safeCertChainHandle = CAPI.CertDuplicateCertificateChain(m_safeCertChainHandle)) {
CAPI.CERT_CHAIN_CONTEXT pChain = new CAPI.CERT_CHAIN_CONTEXT(Marshal.SizeOf(typeof(CAPI.CERT_CHAIN_CONTEXT)));
uint cbSize = (uint)Marshal.ReadInt32(safeCertChainHandle.DangerousGetHandle());
if (cbSize > Marshal.SizeOf(pChain))
{
cbSize = (uint)Marshal.SizeOf(pChain);
}
X509Utils.memcpy(m_safeCertChainHandle.DangerousGetHandle(), new IntPtr(&pChain), cbSize);
m_status = pChain.dwErrorStatus;
Debug.Assert(pChain.cChain > 0);
m_chainElementCollection = new X509ChainElementCollection(Marshal.ReadIntPtr(pChain.rgpChain));
}
}
