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ProSysLib: Dissecting the Process

, 22 Nov 2010 CPOL
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// ProSysLib.cpp : Implementation of DLL Exports.


#include "stdafx.h"
#include "resource.h"
#include "ProSysLib_i.h"
#include "ProSysModule.h"
#include "dlldatax.h"
#include "PSLSystem.h"

// DLL Entry Point
extern "C" BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
#ifdef _MERGE_PROXYSTUB
	if (!PrxDllMain(hInstance, dwReason, lpReserved))
		return FALSE;
#endif
	_Module.SetResourceInstance(hInstance);
	BOOL bResult = _Module.DllMain(dwReason, lpReserved); 
	switch(dwReason)
	{
	case DLL_PROCESS_ATTACH:
		{
			_Module.OnModuleStart();
			break;
		}
	case DLL_PROCESS_DETACH:
		{
			_Module.OnModuleTerminate();
		}
	case DLL_THREAD_ATTACH:
		{
			break;
		}
	case DLL_THREAD_DETACH:
		{
			break;
		}
	default:
		break;
	}

	return bResult;
}

////////////////////////////////////////////////////
// Creates and returns a new instance of IPSLSystem,
// or NULL, if failed.
extern "C" IPSLSystem * __stdcall CreatePSLSystem()
{
	CComObject<CPSLSystem> * pSystem = NULL;
	if(CComObject<CPSLSystem>::CreateInstance(&pSystem) == S_OK)
	{
		pSystem->AddRef();
		return CComPtr<IPSLSystem>(pSystem);
	}
	return NULL;
}

// Used to determine whether the DLL can be unloaded by OLE
STDAPI DllCanUnloadNow(void)
{
#ifdef _MERGE_PROXYSTUB
    HRESULT hr = PrxDllCanUnloadNow();
    if (hr != S_OK)
        return hr;
#endif
    return _Module.DllCanUnloadNow();
}

// Returns a class factory to create an object of the requested type
STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv)
{
#ifdef _MERGE_PROXYSTUB
    if (PrxDllGetClassObject(rclsid, riid, ppv) == S_OK)
        return S_OK;
#endif
    return _Module.DllGetClassObject(rclsid, riid, ppv);
}

// DllRegisterServer - Adds entries to the system registry
STDAPI DllRegisterServer(void)
{
    // registers object, typelib and all interfaces in typelib
    HRESULT hr = _Module.DllRegisterServer();
#ifdef _MERGE_PROXYSTUB
    if (FAILED(hr))
        return hr;
    hr = PrxDllRegisterServer();
#endif
	return hr;
}

// DllUnregisterServer - Removes entries from the system registry
STDAPI DllUnregisterServer(void)
{
	HRESULT hr = _Module.DllUnregisterServer();
#ifdef _MERGE_PROXYSTUB
    if (FAILED(hr))
        return hr;
    hr = PrxDllRegisterServer();
    if (FAILED(hr))
        return hr;
    hr = PrxDllUnregisterServer();
#endif
	return hr;
}

// DllInstall - Adds/Removes entries to the system registry per user
//              per machine.	
STDAPI DllInstall(BOOL bInstall, LPCWSTR pszCmdLine)
{
    HRESULT hr = E_FAIL;
    static const wchar_t szUserSwitch[] = _T("user");

    if(pszCmdLine)
    	if(!_wcsnicmp(pszCmdLine, szUserSwitch, _countof(szUserSwitch)))
    		AtlSetPerUserRegistration(true);

    if(bInstall)
    {	
    	hr = DllRegisterServer();
    	if (FAILED(hr))
    		DllUnregisterServer();
    }
    else
    	hr = DllUnregisterServer();

    return hr;
}


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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Vitaly Tomilov
Software Developer (Senior) Sibedge IT
Ireland Ireland
My online CV: cv.vitalytomilov.com

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