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- Pass the original IID to IMarshal_UnmarshalInterface and query for 

the requested interface.
- Unmarshaling IID_NULL means use the IID the interface was originally
  marshaled with.
This commit is contained in:
Robert Shearman 2005-02-02 19:11:23 +00:00 committed by Alexandre Julliard
parent 31b894d07c
commit b9aa9e0bdd
1 changed files with 24 additions and 10 deletions
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34
dlls/ole32/marshal.c
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@ -495,11 +495,8 @@ static HRESULT proxy_manager_create_ifproxy(
ifproxy->proxy = NULL;
/* the IUnknown interface is special because it does not have a
* proxy associated with the ifproxy as we handle IUnknown ourselves.
* IID_NULL is a placeholder for IID_IUnknown used by the DCOM part of
* the rpc runtime. */
if (IsEqualIID(riid, &IID_NULL) ||
IsEqualIID(riid, &IID_IUnknown))
* proxy associated with the ifproxy as we handle IUnknown ourselves */
if (IsEqualIID(riid, &IID_IUnknown))
{
ifproxy->iface = (void *)&This->lpVtbl;
hr = S_OK;
@ -1116,7 +1113,7 @@ static HRESULT get_marshaler(REFIID riid, IUnknown *pUnk, DWORD dwDestContext,
* The function leaves the stream pointer at the start of the data written
* to the stream by the IMarshal* object.
*/
static HRESULT get_unmarshaler_from_stream(IStream *stream, IMarshal **marshal)
static HRESULT get_unmarshaler_from_stream(IStream *stream, IMarshal **marshal, IID *iid)
{
HRESULT hr;
ULONG res;
@ -1137,6 +1134,8 @@ static HRESULT get_unmarshaler_from_stream(IStream *stream, IMarshal **marshal)
return RPC_E_INVALID_OBJREF;
}
if (iid) *iid = objref.iid;
/* FIXME: handler marshaling */
if (objref.flags & OBJREF_STANDARD)
{
@ -1408,20 +1407,35 @@ cleanup:
*/
HRESULT WINAPI CoUnmarshalInterface(IStream *pStream, REFIID riid, LPVOID *ppv)
{
HRESULT hr;
HRESULT hr;
LPMARSHAL pMarshal;
IID iid;
IUnknown *object;
TRACE("(%p, %s, %p)\n", pStream, debugstr_guid(riid), ppv);
hr = get_unmarshaler_from_stream(pStream, &pMarshal);
hr = get_unmarshaler_from_stream(pStream, &pMarshal, &iid);
if (hr != S_OK)
return hr;
/* call the helper object to do the actual unmarshaling */
hr = IMarshal_UnmarshalInterface(pMarshal, pStream, riid, ppv);
hr = IMarshal_UnmarshalInterface(pMarshal, pStream, &iid, (LPVOID*)&object);
if (hr)
ERR("IMarshal::UnmarshalInterface failed, 0x%08lx\n", hr);
/* IID_NULL means use the interface ID of the marshaled object */
if (!IsEqualIID(riid, &IID_NULL))
iid = *riid;
if (hr == S_OK)
{
hr = IUnknown_QueryInterface(object, &iid, ppv);
if (hr)
ERR("Couldn't query for interface %s, hr = 0x%08lx\n",
debugstr_guid(riid), hr);
IUnknown_Release(object);
}
IMarshal_Release(pMarshal);
return hr;
}
@ -1456,7 +1470,7 @@ HRESULT WINAPI CoReleaseMarshalData(IStream *pStream)
TRACE("(%p)\n", pStream);
hr = get_unmarshaler_from_stream(pStream, &pMarshal);
hr = get_unmarshaler_from_stream(pStream, &pMarshal, NULL);
if (hr != S_OK)
return hr;