antimoniker.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

/*
 *	                      AntiMonikers implementation
 *
 *               Copyright 1999  Noomen Hamza
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <assert.h>
#include <stdarg.h>
#include <string.h>

#define COBJMACROS
#define NONAMELESSUNION
#define NONAMELESSSTRUCT

#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "objbase.h"
#include "wine/debug.h"
#include "moniker.h"

WINE_DEFAULT_DEBUG_CHANNEL(ole);

/* AntiMoniker data structure */
typedef struct AntiMonikerImpl{

    const IMonikerVtbl*  lpvtbl1;  /* VTable relative to the IMoniker interface.*/

    /* The ROT (RunningObjectTable implementation) uses the IROTData interface to test whether
     * two monikers are equal. That's whay IROTData interface is implemented by monikers.
     */
    const IROTDataVtbl*  lpvtbl2;  /* VTable relative to the IROTData interface.*/

    LONG ref; /* reference counter for this object */

    IUnknown *pMarshal; /* custom marshaler */
} AntiMonikerImpl;

static inline IMoniker *impl_from_IROTData( IROTData *iface )
{
    return (IMoniker *)((char*)iface - FIELD_OFFSET(AntiMonikerImpl, lpvtbl2));
}


/*******************************************************************************
 *        AntiMoniker_QueryInterface
 *******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_QueryInterface(IMoniker* iface,REFIID riid,void** ppvObject)
{
    AntiMonikerImpl *This = (AntiMonikerImpl *)iface;

    TRACE("(%p,%p,%p)\n",This,riid,ppvObject);

    /* Perform a sanity check on the parameters.*/
    if ( (This==0) || (ppvObject==0) )
	return E_INVALIDARG;

    /* Initialize the return parameter */
    *ppvObject = 0;

    /* Compare the riid with the interface IDs implemented by this object.*/
    if (IsEqualIID(&IID_IUnknown, riid) ||
        IsEqualIID(&IID_IPersist, riid) ||
        IsEqualIID(&IID_IPersistStream, riid) ||
        IsEqualIID(&IID_IMoniker, riid))
        *ppvObject = iface;
    else if (IsEqualIID(&IID_IROTData, riid))
        *ppvObject = (IROTData*)&(This->lpvtbl2);
    else if (IsEqualIID(&IID_IMarshal, riid))
    {
        HRESULT hr = S_OK;
        if (!This->pMarshal)
            hr = MonikerMarshal_Create(iface, &This->pMarshal);
        if (hr != S_OK)
            return hr;
        return IUnknown_QueryInterface(This->pMarshal, riid, ppvObject);
    }

    /* Check that we obtained an interface.*/
    if ((*ppvObject)==0)
        return E_NOINTERFACE;

    /* always increase the reference count by one when it is successful */
    IMoniker_AddRef(iface);

    return S_OK;
}

/******************************************************************************
 *        AntiMoniker_AddRef
 ******************************************************************************/
static ULONG WINAPI
AntiMonikerImpl_AddRef(IMoniker* iface)
{
    AntiMonikerImpl *This = (AntiMonikerImpl *)iface;

    TRACE("(%p)\n",This);

    return InterlockedIncrement(&This->ref);
}

/******************************************************************************
 *        AntiMoniker_Release
 ******************************************************************************/
static ULONG WINAPI
AntiMonikerImpl_Release(IMoniker* iface)
{
    AntiMonikerImpl *This = (AntiMonikerImpl *)iface;
    ULONG ref;

    TRACE("(%p)\n",This);

    ref = InterlockedDecrement(&This->ref);

    /* destroy the object if there's no more reference on it */
    if (ref == 0)
    {
        if (This->pMarshal) IUnknown_Release(This->pMarshal);
        HeapFree(GetProcessHeap(),0,This);
    }

    return ref;
}

/******************************************************************************
 *        AntiMoniker_GetClassID
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_GetClassID(IMoniker* iface,CLSID *pClassID)
{
    TRACE("(%p,%p)\n",iface,pClassID);

    if (pClassID==NULL)
        return E_POINTER;

    *pClassID = CLSID_AntiMoniker;

    return S_OK;
}

/******************************************************************************
 *        AntiMoniker_IsDirty
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_IsDirty(IMoniker* iface)
{
    /* Note that the OLE-provided implementations of the IPersistStream::IsDirty
       method in the OLE-provided moniker interfaces always return S_FALSE because
       their internal state never changes. */

    TRACE("(%p)\n",iface);

    return S_FALSE;
}

/******************************************************************************
 *        AntiMoniker_Load
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_Load(IMoniker* iface,IStream* pStm)
{
    DWORD constant=1,dwbuffer;
    HRESULT res;

    /* data read by this function is only a DWORD constant (must be 1) ! */
    res=IStream_Read(pStm,&dwbuffer,sizeof(DWORD),NULL);

    if (SUCCEEDED(res)&& dwbuffer!=constant)
        return E_FAIL;

    return res;
}

/******************************************************************************
 *        AntiMoniker_Save
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_Save(IMoniker* iface,IStream* pStm,BOOL fClearDirty)
{
    DWORD constant=1;
    HRESULT res;

    /* data written by this function is only a DWORD constant set to 1 ! */
    res=IStream_Write(pStm,&constant,sizeof(constant),NULL);

    return res;
}

/******************************************************************************
 *        AntiMoniker_GetSizeMax
 *
 * PARAMS
 * pcbSize [out] Pointer to size of stream needed to save object
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_GetSizeMax(IMoniker* iface, ULARGE_INTEGER* pcbSize)
{
    TRACE("(%p,%p)\n",iface,pcbSize);

    if (!pcbSize)
        return E_POINTER;

    /* for more details see AntiMonikerImpl_Save coments */

    /*
     * Normally the sizemax must be sizeof DWORD, but
     * I tested this function it usually return 16 bytes
     * more than the number of bytes used by AntiMoniker::Save function
     */
    pcbSize->u.LowPart =  sizeof(DWORD)+16;

    pcbSize->u.HighPart=0;

    return S_OK;
}

/******************************************************************************
 *                  AntiMoniker_BindToObject
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_BindToObject(IMoniker* iface, IBindCtx* pbc, IMoniker* pmkToLeft,
                             REFIID riid, VOID** ppvResult)
{
    TRACE("(%p,%p,%p,%p,%p)\n",iface,pbc,pmkToLeft,riid,ppvResult);
    return E_NOTIMPL;
}

/******************************************************************************
 *        AntiMoniker_BindToStorage
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_BindToStorage(IMoniker* iface, IBindCtx* pbc, IMoniker* pmkToLeft,
                              REFIID riid, VOID** ppvResult)
{
    TRACE("(%p,%p,%p,%p,%p)\n",iface,pbc,pmkToLeft,riid,ppvResult);
    return E_NOTIMPL;
}

/******************************************************************************
 *        AntiMoniker_Reduce
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_Reduce(IMoniker* iface, IBindCtx* pbc, DWORD dwReduceHowFar,
                       IMoniker** ppmkToLeft, IMoniker** ppmkReduced)
{
    TRACE("(%p,%p,%d,%p,%p)\n",iface,pbc,dwReduceHowFar,ppmkToLeft,ppmkReduced);

    if (ppmkReduced==NULL)
        return E_POINTER;

    AntiMonikerImpl_AddRef(iface);

    *ppmkReduced=iface;

    return MK_S_REDUCED_TO_SELF;
}
/******************************************************************************
 *        AntiMoniker_ComposeWith
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_ComposeWith(IMoniker* iface, IMoniker* pmkRight,
                            BOOL fOnlyIfNotGeneric, IMoniker** ppmkComposite)
{

    TRACE("(%p,%p,%d,%p)\n",iface,pmkRight,fOnlyIfNotGeneric,ppmkComposite);

    if ((ppmkComposite==NULL)||(pmkRight==NULL))
	return E_POINTER;

    *ppmkComposite=0;

    if (fOnlyIfNotGeneric)
        return MK_E_NEEDGENERIC;
    else
        return CreateGenericComposite(iface,pmkRight,ppmkComposite);
}

/******************************************************************************
 *        AntiMoniker_Enum
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_Enum(IMoniker* iface,BOOL fForward, IEnumMoniker** ppenumMoniker)
{
    TRACE("(%p,%d,%p)\n",iface,fForward,ppenumMoniker);

    if (ppenumMoniker == NULL)
        return E_POINTER;

    *ppenumMoniker = NULL;

    return S_OK;
}

/******************************************************************************
 *        AntiMoniker_IsEqual
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_IsEqual(IMoniker* iface,IMoniker* pmkOtherMoniker)
{
    DWORD mkSys;

    TRACE("(%p,%p)\n",iface,pmkOtherMoniker);

    if (pmkOtherMoniker==NULL)
        return S_FALSE;

    IMoniker_IsSystemMoniker(pmkOtherMoniker,&mkSys);

    if (mkSys==MKSYS_ANTIMONIKER)
        return S_OK;
    else
        return S_FALSE;
}

/******************************************************************************
 *        AntiMoniker_Hash
 ******************************************************************************/
static HRESULT WINAPI AntiMonikerImpl_Hash(IMoniker* iface,DWORD* pdwHash)
{
    if (pdwHash==NULL)
        return E_POINTER;

    *pdwHash = 0x80000001;

    return S_OK;
}

/******************************************************************************
 *        AntiMoniker_IsRunning
 ******************************************************************************/
static HRESULT WINAPI
AntiMonikerImpl_IsRunning(IMoniker* iface, IBindCtx* pbc, IMoniker* pmkToLeft,
                          IMoniker* pmkNewlyRunning)
{
    IRunningObjectTable* rot;
    HRESULT res;

    TRACE("(%p,%p,%p,%p)\n",iface,pbc,pmkToLeft,pmkNewlyRunning);