public static Delegate GetDelegate(IntPtr hLib, Type delegateType)
{
#if USE_GETFUNCTIONLIST
CK_FUNCTION_LIST flist = GeFunctionList(hLib);
IntPtr fp = (IntPtr)flist.GetType().GetField(delegateType.Name).GetValue(flist);
if (fp == IntPtr.Zero)
{
throw new Exception("Bad pointer to " + delegateType.Name + " function.");
}
#else
IKernelUtil ker = null;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
ker = new KernelUtilWindows();
}
else
{
ker = new KernelUtilUNIX();
}
IntPtr fp = ker.GetProcAddress(hLib, delegateType.Name);
if (fp == IntPtr.Zero)
{
throw new Exception(delegateType.Name + " could not be found");
}
#endif
return(Marshal.GetDelegateForFunctionPointer(fp, delegateType));
}
public static CK_FUNCTION_LIST GeFunctionList(IntPtr hLib)
{
IntPtr flpp;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
flpp = new KernelUtilWindows().GetProcAddress(hLib, "C_GetFunctionList");
}
else
{
flpp = new KernelUtilUNIX().GetProcAddress(hLib, "C_GetFunctionList");
}
if (flpp == IntPtr.Zero)
{
throw new Exception("C_GetFunctionList could not be found");
}
C_GetFunctionList GetFunctionList = (C_GetFunctionList)Marshal.GetDelegateForFunctionPointer(flpp, typeof(C_GetFunctionList));
IntPtr flp;
GetFunctionList(out flp);
if (flp == IntPtr.Zero)
{
throw new Exception("C_GetFunctionList return invalid pointer.");
}
CK_FUNCTION_LIST flist;
flist = (CK_FUNCTION_LIST)Marshal.PtrToStructure(flp, typeof(CK_FUNCTION_LIST));
return(flist);
}