//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//  ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//  PARTICULAR PURPOSE.
//
//  Copyright  1998 - 2003  Microsoft Corporation.  All Rights Reserved.
//
//  FILE:   Intrface.cpp
//
//
//  PURPOSE:  Interface for User Mode COM Customization DLL.
//

#include "precomp.h"

#include "wmarkui.h"
#include "debug.h"
#include "intrface.h"

// indicate to prefast that this is a user-mode component.
_Analysis_mode_(_Analysis_code_type_user_driver_);



////////////////////////////////////////////////////////
//      Internal Globals
////////////////////////////////////////////////////////

static long g_cComponents = 0 ;     // Count of active components
static long g_cServerLocks = 0 ;    // Count of locks



////////////////////////////////////////////////////////////////////////////////
//
// IWaterMarkUI body
//
HRESULT __stdcall IWaterMarkUI::QueryInterface(const IID& iid, void** ppv)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:QueryInterface entry.\r\n\r\n"));
    if (iid == IID_IUnknown)
    {
        *ppv = static_cast<IUnknown*>(this);
        VERBOSE(DLLTEXT("IWaterMarkUI:Return pointer to IUnknown.\r\n\r\n"));
    }
    else if (iid == IID_IPrintOemUI)
    {
        *ppv = static_cast<IPrintOemUI*>(this) ;
        VERBOSE(DLLTEXT("IWaterMarkUI:Return pointer to IPrintOemUI.\r\n"));
    }
    else
    {
        VERBOSE(DLLTEXT("IWaterMarkUI::QueryInterface: interface not supported.\r\n"));
        *ppv = NULL ;
        return E_NOINTERFACE ;
    }
    reinterpret_cast<IUnknown*>(*ppv)->AddRef() ;
    return S_OK ;
}

ULONG __stdcall IWaterMarkUI::AddRef()
{
    VERBOSE(DLLTEXT("IWaterMarkUI:AddRef entry.\r\n"));
    return InterlockedIncrement(&m_cRef) ;
}

_At_(this, __drv_freesMem(object)) 
ULONG __stdcall IWaterMarkUI::Release()
{
    VERBOSE(DLLTEXT("IWaterMarkUI:Release entry.\r\n"));
   ASSERT( 0 != m_cRef);
   ULONG cRef = InterlockedDecrement(&m_cRef);
   if (0 == cRef)
   {
      delete this;

   }
   return cRef;
}

HRESULT __stdcall IWaterMarkUI::PublishDriverInterface(
    IUnknown *pIUnknown)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:PublishDriverInterface entry.\r\n"));

    UNREFERENCED_PARAMETER(pIUnknown);

    // Don't use the DriverInterface, so don't store it.

    return S_OK;
}

HRESULT __stdcall IWaterMarkUI::GetInfo(
    DWORD  dwMode,
    PVOID  pBuffer,
    DWORD  cbSize,
    PDWORD pcbNeeded)
{
    VERBOSE(DLLTEXT("IWaterMarkUI::GetInfo entry.\r\r\n"));

    // Validate parameters.
    if( (NULL == pcbNeeded)
        ||
        ( (OEMGI_GETSIGNATURE != dwMode)
          &&
          (OEMGI_GETVERSION != dwMode)
          &&
          (OEMGI_GETPUBLISHERINFO != dwMode)
        )
      )
    {
        VERBOSE(DLLTEXT("IWaterMarkUI::GetInfo() exit pcbNeeded is NULL!\r\r\n"));
        SetLastError(ERROR_INVALID_PARAMETER);
        return E_FAIL;
    }

    // Set expected buffer size and number of bytes written.
    *pcbNeeded = sizeof(DWORD);

    // Check buffer size is sufficient.
    if((cbSize < *pcbNeeded) || (NULL == pBuffer))
    {
        WARNING(DLLTEXT("IWaterMarkUI::GetInfo() exit insufficient buffer!\r\r\n"));
        SetLastError(ERROR_INSUFFICIENT_BUFFER);
        return E_FAIL;
    }

    switch(dwMode)
    {
        // OEM DLL Signature
        case OEMGI_GETSIGNATURE:
            *(PDWORD)pBuffer = OEM_SIGNATURE;
            break;

        // OEM DLL version
        case OEMGI_GETVERSION:
            *(PDWORD)pBuffer = OEM_VERSION;
            break;

        // dwMode not supported.
        default:
            // Set written bytes to zero since nothing was written.
            WARNING(DLLTEXT("IWaterMarkUI::GetInfo() exit mode not supported.\r\r\n"));
            *pcbNeeded = 0;
            SetLastError(ERROR_NOT_SUPPORTED);
            return E_FAIL;
    }

    VERBOSE(DLLTEXT("IWaterMarkUI::GetInfo() exit S_OK.\r\r\n"));
    return S_OK;
}

HRESULT __stdcall IWaterMarkUI::DevMode(
    DWORD  dwMode,
    POEMDMPARAM pOemDMParam)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:DevMode entry.\r\n"));

    return hrOEMDevMode(dwMode, pOemDMParam);
}

HRESULT __stdcall IWaterMarkUI::CommonUIProp(
    DWORD  dwMode,
    POEMCUIPPARAM   pOemCUIPParam)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:CommonUIProp entry.\r\n"));

    return hrOEMPropertyPage(dwMode, pOemCUIPParam);
}


HRESULT __stdcall IWaterMarkUI::DocumentPropertySheets(
    PPROPSHEETUI_INFO   pPSUIInfo,
    LPARAM              lParam)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:DocumentPropertySheets entry.\r\n"));

    UNREFERENCED_PARAMETER(pPSUIInfo);
    UNREFERENCED_PARAMETER(lParam);

    return E_NOTIMPL;
}

HRESULT __stdcall IWaterMarkUI::DevicePropertySheets(
    PPROPSHEETUI_INFO   pPSUIInfo,
    LPARAM              lParam)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:DevicePropertySheets entry.\r\n"));

    UNREFERENCED_PARAMETER(pPSUIInfo);
    UNREFERENCED_PARAMETER(lParam);

    return E_NOTIMPL;
}

HRESULT __stdcall IWaterMarkUI::DeviceCapabilities(
            POEMUIOBJ   poemuiobj,
            HANDLE      hPrinter,
            _In_ PWSTR  pDeviceName,
            WORD        wCapability,
            PVOID       pOutput,
            PDEVMODE    pPublicDM,
            PVOID       pOEMDM,
            DWORD       dwOld,
            DWORD       *dwResult)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:DeviceCapabilities entry.\r\n"));

    UNREFERENCED_PARAMETER(poemuiobj);
    UNREFERENCED_PARAMETER(hPrinter);
    UNREFERENCED_PARAMETER(pDeviceName);
    UNREFERENCED_PARAMETER(wCapability);
    UNREFERENCED_PARAMETER(pOutput);
    UNREFERENCED_PARAMETER(pPublicDM);
    UNREFERENCED_PARAMETER(pOEMDM);
    UNREFERENCED_PARAMETER(dwOld);
    UNREFERENCED_PARAMETER(dwResult);

    return E_NOTIMPL;
}

HRESULT __stdcall IWaterMarkUI::DevQueryPrintEx(
    POEMUIOBJ               poemuiobj,
    PDEVQUERYPRINT_INFO     pDQPInfo,
    PDEVMODE                pPublicDM,
    PVOID                   pOEMDM)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:DevQueryPrintEx entry.\r\n"));

    UNREFERENCED_PARAMETER(poemuiobj);
    UNREFERENCED_PARAMETER(pDQPInfo);
    UNREFERENCED_PARAMETER(pPublicDM);
    UNREFERENCED_PARAMETER(pOEMDM);

    return E_NOTIMPL;
}

HRESULT __stdcall IWaterMarkUI::UpgradePrinter(
    DWORD   dwLevel,
    PBYTE   pDriverUpgradeInfo)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:UpgradePrinter entry.\r\n"));

    UNREFERENCED_PARAMETER(dwLevel);
    UNREFERENCED_PARAMETER(pDriverUpgradeInfo);

    return E_NOTIMPL;
}

HRESULT __stdcall IWaterMarkUI::PrinterEvent(
    _In_ PWSTR   pPrinterName,
    INT          iDriverEvent,
    DWORD        dwFlags,
    LPARAM       lParam)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:PrinterEvent entry.\r\n"));

    UNREFERENCED_PARAMETER(pPrinterName);
    UNREFERENCED_PARAMETER(iDriverEvent);
    UNREFERENCED_PARAMETER(dwFlags);
    UNREFERENCED_PARAMETER(lParam);

    return E_NOTIMPL;
}

HRESULT __stdcall IWaterMarkUI::DriverEvent(
    DWORD   dwDriverEvent,
    DWORD   dwLevel,
    LPBYTE  pDriverInfo,
    LPARAM  lParam)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:DriverEvent entry.\r\n"));

    UNREFERENCED_PARAMETER(dwDriverEvent);
    UNREFERENCED_PARAMETER(dwLevel);
    UNREFERENCED_PARAMETER(pDriverInfo);
    UNREFERENCED_PARAMETER(lParam);

    return E_NOTIMPL;
};


HRESULT __stdcall IWaterMarkUI::QueryColorProfile(
            HANDLE      hPrinter,
            POEMUIOBJ   poemuiobj,
            PDEVMODE    pPublicDM,
            PVOID       pOEMDM,
            ULONG       ulQueryMode,
            VOID       *pvProfileData,
            ULONG      *pcbProfileData,
            FLONG      *pflProfileData)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:QueryColorProfile entry.\r\n"));

    UNREFERENCED_PARAMETER(hPrinter);
    UNREFERENCED_PARAMETER(poemuiobj);
    UNREFERENCED_PARAMETER(pPublicDM);
    UNREFERENCED_PARAMETER(pOEMDM);
    UNREFERENCED_PARAMETER(ulQueryMode);
    UNREFERENCED_PARAMETER(pvProfileData);
    UNREFERENCED_PARAMETER(pcbProfileData);
    UNREFERENCED_PARAMETER(pflProfileData);

    return E_NOTIMPL;
};

HRESULT __stdcall IWaterMarkUI::FontInstallerDlgProc(
        HWND    hWnd,
        UINT    usMsg,
        WPARAM  wParam,
        LPARAM  lParam)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:FontInstallerDlgProc entry.\r\n"));

    UNREFERENCED_PARAMETER(hWnd);
    UNREFERENCED_PARAMETER(usMsg);
    UNREFERENCED_PARAMETER(wParam);
    UNREFERENCED_PARAMETER(lParam);

    return E_NOTIMPL;
};

HRESULT __stdcall IWaterMarkUI::UpdateExternalFonts(
        HANDLE       hPrinter,
        HANDLE       hHeap,
        _In_ PWSTR   pwstrCartridges)
{
    VERBOSE(DLLTEXT("IWaterMarkUI:UpdateExternalFonts entry.\r\n"));

    UNREFERENCED_PARAMETER(hPrinter);
    UNREFERENCED_PARAMETER(hHeap);
    UNREFERENCED_PARAMETER(pwstrCartridges);

    return E_NOTIMPL;
}

////////////////////////////////////////////////////////////////////////////////
//
// oem class factory
//
class IOemCF : public IClassFactory
{
public:
    // *** IUnknown methods ***

    STDMETHOD(QueryInterface) (THIS_ REFIID riid, LPVOID FAR* ppvObj);

    STDMETHOD_(ULONG,AddRef)  (THIS);

    // the _At_ tag here tells prefast that once release 
    // is called, the memory should not be considered leaked
    _At_(this, __drv_freesMem(object)) 
    STDMETHOD_(ULONG,Release) (THIS);

    // *** IClassFactory methods ***
    STDMETHOD(CreateInstance) (THIS_
                               LPUNKNOWN pUnkOuter,
                               REFIID riid,
                               LPVOID FAR* ppvObject);
    STDMETHOD(LockServer)     (THIS_ BOOL bLock);


    // Constructor
    IOemCF(): m_cRef(1) { };
    ~IOemCF() { };

protected:
    LONG m_cRef;

};

///////////////////////////////////////////////////////////
//
// Class factory body
//
HRESULT __stdcall IOemCF::QueryInterface(const IID& iid, void** ppv)
{
    if ((iid == IID_IUnknown) || (iid == IID_IClassFactory))
    {
        *ppv = static_cast<IOemCF*>(this) ;
    }
    else
    {
        WARNING(DLLTEXT("IOemCF::QueryInterface: interface not supported.\r\n"));
        *ppv = NULL ;
        return E_NOINTERFACE ;
    }
    reinterpret_cast<IUnknown*>(*ppv)->AddRef() ;
    return S_OK ;
}

ULONG __stdcall IOemCF::AddRef()
{
    return InterlockedIncrement(&m_cRef) ;
}

_At_(this, __drv_freesMem(object)) 
ULONG __stdcall IOemCF::Release()
{
   ASSERT( 0 != m_cRef);
   ULONG cRef = InterlockedDecrement(&m_cRef);
   if (0 == cRef)
   {
      delete this;

   }
   return cRef;
}

// IClassFactory implementation
HRESULT __stdcall IOemCF::CreateInstance(IUnknown* pUnknownOuter,
                                           const IID& iid,
                                           void** ppv)
{
    //DbgPrint(DLLTEXT("Class factory:\t\tCreate component.")) ;

    if (ppv == NULL)
    {
        return E_POINTER;
    }
    *ppv = NULL;

    // Cannot aggregate.
    if (pUnknownOuter != NULL)
    {
        return CLASS_E_NOAGGREGATION ;
    }

    // Create component.
    IWaterMarkUI* pOemCB = new IWaterMarkUI ;
    if (pOemCB == NULL)
    {
        return E_OUTOFMEMORY ;
    }
    // Get the requested interface.
    HRESULT hr = pOemCB->QueryInterface(iid, ppv) ;

    // Release the IUnknown pointer.
    // (If QueryInterface failed, component will delete itself.)
    pOemCB->Release() ;
    return hr ;
}

// LockServer
HRESULT __stdcall IOemCF::LockServer(BOOL bLock)
{
    if (bLock)
    {
        InterlockedIncrement(&g_cServerLocks) ;
    }
    else
    {
        InterlockedDecrement(&g_cServerLocks) ;
    }
    return S_OK ;
}

///////////////////////////////////////////////////////////
//
// Exported functions
//


// Can DLL unload now?
//
STDAPI DllCanUnloadNow()
{
    //
    // To avoid leaving OEM DLL still in memory when Unidrv or Pscript drivers
    // are unloaded, Unidrv and Pscript driver ignore the return value of
    // DllCanUnloadNow of the OEM DLL, and always call FreeLibrary on the OEMDLL.
    //
    // If OEM DLL spins off a working thread that also uses the OEM DLL, the
    // thread needs to call LoadLibrary and FreeLibraryAndExitThread, otherwise
    // it may crash after Unidrv or Pscript calls FreeLibrary.
    //

    if ((g_cComponents == 0) && (g_cServerLocks == 0))
    {
        return S_OK ;
    }
    else
    {
        return S_FALSE;
    }
}

//
// Get class factory
//
STDAPI  DllGetClassObject(
    _In_ REFCLSID clsid, 
    _In_ REFIID iid, 
    _Outptr_ LPVOID* ppv)
{
    VERBOSE(DLLTEXT("DllGetClassObject:Create class factory.\r\n"));

    if (ppv == NULL)
    {
        return E_POINTER;
    }
    *ppv = NULL;

    // Can we create this component?
    if (clsid != CLSID_OEMUI)
    {
        return CLASS_E_CLASSNOTAVAILABLE ;
    }

    // Create class factory.
    IOemCF* pFontCF = new IOemCF ;  // Reference count set to 1
                                         // in constructor
    if (pFontCF == NULL)
    {
        return E_OUTOFMEMORY ;
    }

    // Get requested interface.
    HRESULT hr = pFontCF->QueryInterface(iid, ppv) ;
    pFontCF->Release() ;

    return hr ;
}