/// <summary>
/// Creates an instance of Pkcs11Module
/// </summary>
/// <param name="moduleName">
/// module to be loaded. it is the path of pkcs11 driver
/// <example>
/// <code>
/// Pkcs11Module pm=Pkcs11Module.GetInstance("gclib.dll");
/// </code>
/// </example>
/// </param>
/// <returns></returns>
internal static Pkcs11Module GetInstance(string moduleName)
{
IntPtr hLib;
if ((hLib = KernelUtil.LoadLibrary(moduleName)) == IntPtr.Zero)
{
throw new Exception("Could not load module. Module name:" + moduleName);
}
return(new Pkcs11Module(hLib));
}
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
IntPtr fp = KernelUtil.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 = KernelUtil.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);
}