mirror of
git://source.winehq.org/git/wine.git
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444 lines
9.7 KiB
C
444 lines
9.7 KiB
C
/*
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* A basic implementation for COM DLL implementor.
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*
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* Copyright (C) Hidenori TAKESHIMA <hidenori@a2.ctktv.ne.jp>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "windef.h"
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#include "winerror.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "winnls.h"
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#include "ole2.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(comimpl);
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#include "comimpl.h"
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/*
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- All threading model including Apartment and Both are supported.
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- Aggregation is supported.
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- CoFreeUnusedLibraries() is supported.
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- DisableThreadLibraryCalls() is supported.
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*/
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static CRITICAL_SECTION csComImpl;
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static DWORD dwComImplRef;
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static HRESULT WINAPI
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IUnknown_fnQueryInterface(IUnknown* iface,REFIID riid,LPVOID *ppobj)
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{
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ICOM_THIS(COMIMPL_IUnkImpl,iface);
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size_t ofs;
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DWORD dwIndex;
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COMIMPL_IFDelegation* pDelegation;
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HRESULT hr;
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TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppobj);
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if ( ppobj == NULL )
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return E_POINTER;
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*ppobj = NULL;
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ofs = 0;
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if ( IsEqualGUID( &IID_IUnknown, riid ) )
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{
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TRACE("IID_IUnknown - returns inner object.\n");
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}
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else
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{
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for ( dwIndex = 0; dwIndex < This->dwEntries; dwIndex++ )
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{
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if ( IsEqualGUID( This->pEntries[dwIndex].piid, riid ) )
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{
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ofs = This->pEntries[dwIndex].ofsVTPtr;
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break;
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}
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}
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if ( dwIndex == This->dwEntries )
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{
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hr = E_NOINTERFACE;
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/* delegation */
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pDelegation = This->pDelegationFirst;
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while ( pDelegation != NULL )
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{
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hr = (*pDelegation->pOnQueryInterface)( iface, riid, ppobj );
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if ( hr != E_NOINTERFACE )
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break;
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pDelegation = pDelegation->pNext;
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}
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if ( hr == E_NOINTERFACE )
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{
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FIXME("(%p) unknown interface: %s\n",This,debugstr_guid(riid));
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}
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return hr;
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}
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}
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*ppobj = (LPVOID)(((char*)This) + ofs);
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IUnknown_AddRef((IUnknown*)(*ppobj));
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return S_OK;
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}
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static ULONG WINAPI
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IUnknown_fnAddRef(IUnknown* iface)
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{
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ICOM_THIS(COMIMPL_IUnkImpl,iface);
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TRACE("(%p)->()\n",This);
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return InterlockedExchangeAdd(&(This->ref),1) + 1;
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}
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static ULONG WINAPI
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IUnknown_fnRelease(IUnknown* iface)
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{
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ICOM_THIS(COMIMPL_IUnkImpl,iface);
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LONG ref;
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TRACE("(%p)->()\n",This);
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ref = InterlockedExchangeAdd(&(This->ref),-1) - 1;
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if ( ref > 0 )
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return (ULONG)ref;
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This->ref ++;
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if ( This->pOnFinalRelease != NULL )
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(*(This->pOnFinalRelease))(iface);
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This->ref --;
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COMIMPL_FreeObj(This);
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return 0;
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}
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static ICOM_VTABLE(IUnknown) iunknown =
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{
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ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
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/* IUnknown fields */
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IUnknown_fnQueryInterface,
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IUnknown_fnAddRef,
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IUnknown_fnRelease,
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};
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void COMIMPL_IUnkInit( COMIMPL_IUnkImpl* pImpl, IUnknown* punkOuter )
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{
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TRACE("(%p)\n",pImpl);
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ICOM_VTBL(pImpl) = &iunknown;
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pImpl->pEntries = NULL;
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pImpl->dwEntries = 0;
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pImpl->pDelegationFirst = NULL;
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pImpl->pOnFinalRelease = NULL;
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pImpl->ref = 1;
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pImpl->punkControl = (IUnknown*)pImpl;
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/* for implementing aggregation. */
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if ( punkOuter != NULL )
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pImpl->punkControl = punkOuter;
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}
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void COMIMPL_IUnkAddDelegationHandler(
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COMIMPL_IUnkImpl* pImpl, COMIMPL_IFDelegation* pDelegation )
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{
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pDelegation->pNext = pImpl->pDelegationFirst;
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pImpl->pDelegationFirst = pDelegation;
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}
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/************************************************************************/
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static HRESULT WINAPI
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IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj);
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static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface);
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static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface);
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static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj);
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static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock);
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static ICOM_VTABLE(IClassFactory) iclassfact =
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{
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ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
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IClassFactory_fnQueryInterface,
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IClassFactory_fnAddRef,
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IClassFactory_fnRelease,
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IClassFactory_fnCreateInstance,
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IClassFactory_fnLockServer
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};
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typedef struct
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{
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/* IUnknown fields */
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ICOM_VFIELD(IClassFactory);
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LONG ref;
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/* IClassFactory fields */
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const COMIMPL_CLASSENTRY* pEntry;
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} IClassFactoryImpl;
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static HRESULT WINAPI
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IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj)
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{
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ICOM_THIS(IClassFactoryImpl,iface);
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TRACE("(%p)->(%p,%p)\n",This,riid,ppobj);
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if ( ( IsEqualGUID( &IID_IUnknown, riid ) ) ||
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( IsEqualGUID( &IID_IClassFactory, riid ) ) )
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{
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*ppobj = iface;
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IClassFactory_AddRef(iface);
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface)
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{
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ICOM_THIS(IClassFactoryImpl,iface);
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TRACE("(%p)->()\n",This);
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return InterlockedExchangeAdd(&(This->ref),1) + 1;
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}
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static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface)
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{
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ICOM_THIS(IClassFactoryImpl,iface);
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LONG ref;
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TRACE("(%p)->()\n",This);
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ref = InterlockedExchangeAdd(&(This->ref),-1) - 1;
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if ( ref > 0 )
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return (ULONG)ref;
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COMIMPL_FreeObj(This);
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return 0;
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}
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static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj)
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{
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ICOM_THIS(IClassFactoryImpl,iface);
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HRESULT hr;
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IUnknown* punk;
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TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
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if ( ppobj == NULL )
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return E_POINTER;
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if ( pOuter != NULL && !IsEqualGUID( riid, &IID_IUnknown ) )
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return CLASS_E_NOAGGREGATION;
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*ppobj = NULL;
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hr = (*This->pEntry->pCreateIUnk)(pOuter,(void**)&punk);
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if ( hr != S_OK )
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return hr;
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hr = IUnknown_QueryInterface(punk,riid,ppobj);
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IUnknown_Release(punk);
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return hr;
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}
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static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock)
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{
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ICOM_THIS(IClassFactoryImpl,iface);
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HRESULT hr;
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TRACE("(%p)->(%d)\n",This,dolock);
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if (dolock)
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hr = IClassFactory_AddRef(iface);
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else
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hr = IClassFactory_Release(iface);
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return hr;
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}
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static HRESULT IClassFactory_Alloc( const CLSID* pclsid, void** ppobj )
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{
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const COMIMPL_CLASSENTRY* pEntry;
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IClassFactoryImpl* pImpl;
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TRACE( "(%s,%p)\n", debugstr_guid(pclsid), ppobj );
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pEntry = COMIMPL_ClassList;
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while ( pEntry->pclsid != NULL )
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{
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if ( IsEqualGUID( pclsid, pEntry->pclsid ) )
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goto found;
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pEntry ++;
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}
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return CLASS_E_CLASSNOTAVAILABLE;
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found:
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pImpl = (IClassFactoryImpl*)COMIMPL_AllocObj( sizeof(IClassFactoryImpl) );
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if ( pImpl == NULL )
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return E_OUTOFMEMORY;
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TRACE( "allocated successfully.\n" );
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ICOM_VTBL(pImpl) = &iclassfact;
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pImpl->ref = 1;
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pImpl->pEntry = pEntry;
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*ppobj = (void*)pImpl;
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return S_OK;
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}
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/***********************************************************************
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* COMIMPL_InitProcess (internal)
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*/
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static BOOL COMIMPL_InitProcess( HINSTANCE hInstDLL )
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{
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TRACE("()\n");
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dwComImplRef = 0;
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InitializeCriticalSection( &csComImpl );
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#ifndef COMIMPL_PERTHREAD_INIT
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DisableThreadLibraryCalls((HMODULE)hInstDLL);
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#endif /* COMIMPL_PERTHREAD_INIT */
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return TRUE;
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}
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/***********************************************************************
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* COMIMPL_UninitProcess (internal)
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*/
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static void COMIMPL_UninitProcess( HINSTANCE hInstDLL )
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{
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CHAR szThisDLL[ MAX_PATH ];
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TRACE("()\n");
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if ( dwComImplRef != 0 )
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{
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szThisDLL[0] = '\0';
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if ( !GetModuleFileNameA( (HMODULE)hInstDLL, szThisDLL, MAX_PATH ) )
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szThisDLL[0] = '\0';
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ERR( "you must release some objects allocated from %s.\n", szThisDLL );
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}
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DeleteCriticalSection( &csComImpl );
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}
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/***********************************************************************
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* COMIMPL_DllMain
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*/
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BOOL WINAPI COMIMPL_DllMain(
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HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved )
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{
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TRACE("(%08x,%08lx,%p)\n",hInstDLL,fdwReason,lpvReserved);
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switch ( fdwReason )
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{
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case DLL_PROCESS_ATTACH:
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if ( !COMIMPL_InitProcess( hInstDLL ) )
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return FALSE;
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break;
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case DLL_PROCESS_DETACH:
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COMIMPL_UninitProcess( hInstDLL );
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break;
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case DLL_THREAD_ATTACH:
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break;
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case DLL_THREAD_DETACH:
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break;
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}
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return TRUE;
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}
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/***********************************************************************
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* COMIMPL_DllGetClassObject
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*/
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HRESULT WINAPI COMIMPL_DllGetClassObject(
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const CLSID* pclsid,const IID* piid,void** ppv)
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{
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*ppv = NULL;
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if ( IsEqualGUID( &IID_IUnknown, piid ) ||
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IsEqualGUID( &IID_IClassFactory, piid ) )
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{
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return IClassFactory_Alloc( pclsid, ppv );
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}
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return CLASS_E_CLASSNOTAVAILABLE;
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}
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/***********************************************************************
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* COMIMPL_DllCanUnloadNow
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*
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* RETURNS
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* Success: S_OK
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* Failure: S_FALSE
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*/
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HRESULT WINAPI COMIMPL_DllCanUnloadNow(void)
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{
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HRESULT hr;
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EnterCriticalSection( &csComImpl );
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hr = ( dwComImplRef == 0 ) ? S_OK : S_FALSE;
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LeaveCriticalSection( &csComImpl );
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return hr;
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}
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/***********************************************************************
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* COMIMPL_AllocObj
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*/
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void* COMIMPL_AllocObj( DWORD dwSize )
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{
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void* pv;
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EnterCriticalSection( &csComImpl );
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dwComImplRef ++;
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pv = HeapAlloc( COMIMPL_hHeap, 0, dwSize );
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if ( pv == NULL )
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dwComImplRef --;
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LeaveCriticalSection( &csComImpl );
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return pv;
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}
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/***********************************************************************
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* COMIMPL_FreeObj
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*/
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void COMIMPL_FreeObj( void* pobj )
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{
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EnterCriticalSection( &csComImpl );
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HeapFree( COMIMPL_hHeap, 0, pobj );
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dwComImplRef --;
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LeaveCriticalSection( &csComImpl );
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}
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