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// DLLExports.cpp
#include "StdAfx.h"
#include "Common/MyInitGuid.h"
#include "Common/ComTry.h"
#include "MyAES.h"
extern "C"
BOOL WINAPI DllMain(HINSTANCE /* hInstance */, DWORD /* dwReason */, LPVOID /* lpReserved */)
{
return TRUE;
}
#define MY_CreateClass(n) \
if (*clsid == CLSID_CCrypto_ ## n ## _Encoder) { \
if (!correctInterface) return E_NOINTERFACE; \
filter = (ICompressFilter *)new C ## n ## _Encoder(); \
} else if (*clsid == CLSID_CCrypto_ ## n ## _Decoder){ \
if (!correctInterface) return E_NOINTERFACE; \
filter = (ICompressFilter *)new C ## n ## _Decoder(); \
}
STDAPI CreateObject(
const GUID *clsid,
const GUID *interfaceID,
void **outObject)
{
COM_TRY_BEGIN
*outObject = 0;
int correctInterface = (*interfaceID == IID_ICompressFilter);
CMyComPtr<ICompressFilter> filter;
MY_CreateClass(AES_CBC)
else
MY_CreateClass(AES_ECB)
else
return CLASS_E_CLASSNOTAVAILABLE;
*outObject = filter.Detach();
return S_OK;
COM_TRY_END
}
struct CAESMethodItem
{
char ID[3];
const wchar_t *UserName;
const GUID *Decoder;
const GUID *Encoder;
};
#define METHOD_ITEM(Name, id, UserName) \
{ { 0x06, 0x01, id }, UserName, \
&CLSID_CCrypto_ ## Name ## _Decoder, \
&CLSID_CCrypto_ ## Name ## _Encoder }
static CAESMethodItem g_Methods[] =
{
METHOD_ITEM(AES_ECB, (char)(unsigned char)0xC0, L"AES-ECB"),
METHOD_ITEM(AES_CBC, (char)(unsigned char)0xC1, L"AES")
};
STDAPI GetNumberOfMethods(UINT32 *numMethods)
{
*numMethods = sizeof(g_Methods) / sizeof(g_Methods[1]);
return S_OK;
}
STDAPI GetMethodProperty(UINT32 index, PROPID propID, PROPVARIANT *value)
{
if (index > sizeof(g_Methods) / sizeof(g_Methods[1]))
return E_INVALIDARG;
VariantClear((tagVARIANT *)value);
const CAESMethodItem &method = g_Methods[index];
switch(propID)
{
case NMethodPropID::kID:
if ((value->bstrVal = ::SysAllocStringByteLen(method.ID,
sizeof(method.ID))) != 0)
value->vt = VT_BSTR;
return S_OK;
case NMethodPropID::kName:
if ((value->bstrVal = ::SysAllocString(method.UserName)) != 0)
value->vt = VT_BSTR;
return S_OK;
case NMethodPropID::kDecoder:
if ((value->bstrVal = ::SysAllocStringByteLen(
(const char *)method.Decoder, sizeof(GUID))) != 0)
value->vt = VT_BSTR;
return S_OK;
case NMethodPropID::kEncoder:
if ((value->bstrVal = ::SysAllocStringByteLen(
(const char *)method.Encoder, sizeof(GUID))) != 0)
value->vt = VT_BSTR;
return S_OK;
}
return S_OK;
}
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