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wine/dlls/ole32/bindctx.c

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/*
* BindCtx 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 <stdarg.h>
#include <string.h>
#define COBJMACROS
#include "winerror.h"
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "objbase.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
#define BINDCTX_FIRST_TABLE_SIZE 4
/* data structure of the BindCtx table elements */
typedef struct BindCtxObject{
IUnknown* pObj; /* point on a bound object */
LPOLESTR pkeyObj; /* key associated to this bound object */
BYTE regType; /* registration type: 1 if RegisterObjectParam and 0 if RegisterObjectBound */
} BindCtxObject;
/* BindCtx data structure */
typedef struct BindCtxImpl{
IBindCtx IBindCtx_iface;
LONG ref; /* reference counter for this object */
BindCtxObject* bindCtxTable; /* this is a table in which all bounded objects are stored*/
DWORD bindCtxTableLastIndex; /* first free index in the table */
DWORD bindCtxTableSize; /* size table */
BIND_OPTS2 bindOption2; /* a structure which contains the bind options*/
} BindCtxImpl;
/* IBindCtx prototype functions : */
static HRESULT WINAPI BindCtxImpl_ReleaseBoundObjects(IBindCtx*);
static HRESULT BindCtxImpl_GetObjectIndex(BindCtxImpl*, IUnknown*, LPOLESTR, DWORD *);
static HRESULT BindCtxImpl_ExpandTable(BindCtxImpl *);
static inline BindCtxImpl *impl_from_IBindCtx(IBindCtx *iface)
{
return CONTAINING_RECORD(iface, BindCtxImpl, IBindCtx_iface);
}
/*******************************************************************************
* BindCtx_QueryInterface
*******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_QueryInterface(IBindCtx* iface,REFIID riid,void** ppvObject)
{
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p %s %p)\n",This, debugstr_guid(riid), ppvObject);
/* Perform a sanity check on the parameters.*/
if (!ppvObject)
return E_POINTER;
/* Initialize the return parameter.*/
*ppvObject = 0;
/* Compare the riid with the interface IDs implemented by this object.*/
if (IsEqualIID(&IID_IUnknown, riid) ||
IsEqualIID(&IID_IBindCtx, riid))
{
*ppvObject = This;
IBindCtx_AddRef(iface);
return S_OK;
}
return E_NOINTERFACE;
}
/******************************************************************************
* BindCtx_AddRef
******************************************************************************/
static ULONG WINAPI BindCtxImpl_AddRef(IBindCtx* iface)
{
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p)\n",This);
return InterlockedIncrement(&This->ref);
}
/******************************************************************************
* BindCtx_Destroy (local function)
*******************************************************************************/
static HRESULT BindCtxImpl_Destroy(BindCtxImpl* This)
{
TRACE("(%p)\n",This);
/* free the table space memory */
HeapFree(GetProcessHeap(),0,This->bindCtxTable);
/* free the bindctx structure */
HeapFree(GetProcessHeap(),0,This);
return S_OK;
}
/******************************************************************************
* BindCtx_Release
******************************************************************************/
static ULONG WINAPI BindCtxImpl_Release(IBindCtx* iface)
{
BindCtxImpl *This = impl_from_IBindCtx(iface);
ULONG ref;
TRACE("(%p)\n",This);
ref = InterlockedDecrement(&This->ref);
if (ref == 0)
{
/* release all registered objects */
BindCtxImpl_ReleaseBoundObjects(&This->IBindCtx_iface);
BindCtxImpl_Destroy(This);
}
return ref;
}
/******************************************************************************
* BindCtx_RegisterObjectBound
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_RegisterObjectBound(IBindCtx* iface,IUnknown* punk)
{
BindCtxImpl *This = impl_from_IBindCtx(iface);
DWORD lastIndex=This->bindCtxTableLastIndex;
TRACE("(%p,%p)\n",This,punk);
if (punk==NULL)
return S_OK;
if (lastIndex == This->bindCtxTableSize)
{
HRESULT hr = BindCtxImpl_ExpandTable(This);
if (FAILED(hr))
return hr;
}
IUnknown_AddRef(punk);
/* put the object in the first free element in the table */
This->bindCtxTable[lastIndex].pObj = punk;
This->bindCtxTable[lastIndex].pkeyObj = NULL;
This->bindCtxTable[lastIndex].regType = 0;
lastIndex= ++This->bindCtxTableLastIndex;
return S_OK;
}
/******************************************************************************
* BindCtx_RevokeObjectBound
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_RevokeObjectBound(IBindCtx* iface, IUnknown* punk)
{
DWORD index,j;
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p,%p)\n",This,punk);
if (!punk)
return E_INVALIDARG;
/* check if the object was registered or not */
if (BindCtxImpl_GetObjectIndex(This,punk,NULL,&index)==S_FALSE)
return MK_E_NOTBOUND;
if(This->bindCtxTable[index].pObj)
IUnknown_Release(This->bindCtxTable[index].pObj);
HeapFree(GetProcessHeap(),0,This->bindCtxTable[index].pkeyObj);
/* left-shift all elements in the right side of the current revoked object */
for(j=index; j<This->bindCtxTableLastIndex-1; j++)
This->bindCtxTable[j]= This->bindCtxTable[j+1];
This->bindCtxTableLastIndex--;
return S_OK;
}
/******************************************************************************
* BindCtx_ReleaseBoundObjects
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_ReleaseBoundObjects(IBindCtx* iface)
{
DWORD i;
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p)\n",This);
for(i=0;i<This->bindCtxTableLastIndex;i++)
{
if(This->bindCtxTable[i].pObj)
IUnknown_Release(This->bindCtxTable[i].pObj);
HeapFree(GetProcessHeap(),0,This->bindCtxTable[i].pkeyObj);
}
This->bindCtxTableLastIndex = 0;
return S_OK;
}
/******************************************************************************
* BindCtx_SetBindOptions
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_SetBindOptions(IBindCtx* iface,BIND_OPTS *pbindopts)
{
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p,%p)\n",This,pbindopts);
if (pbindopts==NULL)
return E_POINTER;
if (pbindopts->cbStruct > sizeof(BIND_OPTS2))
{
WARN("invalid size\n");
return E_INVALIDARG; /* FIXME : not verified */
}
memcpy(&This->bindOption2, pbindopts, pbindopts->cbStruct);
return S_OK;
}
/******************************************************************************
* BindCtx_GetBindOptions
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_GetBindOptions(IBindCtx* iface,BIND_OPTS *pbindopts)
{
BindCtxImpl *This = impl_from_IBindCtx(iface);
ULONG cbStruct;
TRACE("(%p,%p)\n",This,pbindopts);
if (pbindopts==NULL)
return E_POINTER;
cbStruct = pbindopts->cbStruct;
if (cbStruct > sizeof(BIND_OPTS2))
cbStruct = sizeof(BIND_OPTS2);
memcpy(pbindopts, &This->bindOption2, cbStruct);
pbindopts->cbStruct = cbStruct;
return S_OK;
}
/******************************************************************************
* BindCtx_GetRunningObjectTable
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_GetRunningObjectTable(IBindCtx* iface,IRunningObjectTable** pprot)
{
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p,%p)\n",This,pprot);
if (pprot==NULL)
return E_POINTER;
return GetRunningObjectTable(0, pprot);
}
/******************************************************************************
* BindCtx_RegisterObjectParam
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_RegisterObjectParam(IBindCtx* iface,LPOLESTR pszkey, IUnknown* punk)
{
DWORD index=0;
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p,%s,%p)\n",This,debugstr_w(pszkey),punk);
if (punk==NULL)
return E_INVALIDARG;
if (pszkey!=NULL && BindCtxImpl_GetObjectIndex(This,NULL,pszkey,&index)==S_OK)
{
TRACE("Overwriting existing key\n");
if(This->bindCtxTable[index].pObj!=NULL)
IUnknown_Release(This->bindCtxTable[index].pObj);
This->bindCtxTable[index].pObj=punk;
IUnknown_AddRef(punk);
return S_OK;
}
if (This->bindCtxTableLastIndex == This->bindCtxTableSize)
{
HRESULT hr = BindCtxImpl_ExpandTable(This);
if (FAILED(hr))
return hr;
}
This->bindCtxTable[This->bindCtxTableLastIndex].pObj = punk;
This->bindCtxTable[This->bindCtxTableLastIndex].regType = 1;
if (pszkey==NULL)
This->bindCtxTable[This->bindCtxTableLastIndex].pkeyObj=NULL;
else
{
This->bindCtxTable[This->bindCtxTableLastIndex].pkeyObj=
HeapAlloc(GetProcessHeap(),0,(sizeof(WCHAR)*(1+lstrlenW(pszkey))));
if (This->bindCtxTable[This->bindCtxTableLastIndex].pkeyObj==NULL)
return E_OUTOFMEMORY;
lstrcpyW(This->bindCtxTable[This->bindCtxTableLastIndex].pkeyObj,pszkey);
}
This->bindCtxTableLastIndex++;
IUnknown_AddRef(punk);
return S_OK;
}
/******************************************************************************
* BindCtx_GetObjectParam
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_GetObjectParam(IBindCtx* iface,LPOLESTR pszkey, IUnknown** punk)
{
DWORD index;
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p,%s,%p)\n",This,debugstr_w(pszkey),punk);
if (punk==NULL)
return E_POINTER;
*punk=0;
if (BindCtxImpl_GetObjectIndex(This,NULL,pszkey,&index)==S_FALSE)
return E_FAIL;
IUnknown_AddRef(This->bindCtxTable[index].pObj);
*punk = This->bindCtxTable[index].pObj;
return S_OK;
}
/******************************************************************************
* BindCtx_RevokeObjectParam
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_RevokeObjectParam(IBindCtx* iface,LPOLESTR ppenum)
{
DWORD index,j;
BindCtxImpl *This = impl_from_IBindCtx(iface);
TRACE("(%p,%s)\n",This,debugstr_w(ppenum));
if (BindCtxImpl_GetObjectIndex(This,NULL,ppenum,&index)==S_FALSE)
return E_FAIL;
/* release the object if it's found */
if(This->bindCtxTable[index].pObj)
IUnknown_Release(This->bindCtxTable[index].pObj);
HeapFree(GetProcessHeap(),0,This->bindCtxTable[index].pkeyObj);
/* remove the object from the table with a left-shifting of all objects in the right side */
for(j=index; j<This->bindCtxTableLastIndex-1; j++)
This->bindCtxTable[j]= This->bindCtxTable[j+1];
This->bindCtxTableLastIndex--;
return S_OK;
}
/******************************************************************************
* BindCtx_EnumObjectParam
******************************************************************************/
static HRESULT WINAPI
BindCtxImpl_EnumObjectParam(IBindCtx* iface,IEnumString** pszkey)
{
TRACE("(%p,%p)\n",iface,pszkey);
*pszkey = NULL;
/* not implemented in native either */
return E_NOTIMPL;
}
/********************************************************************************
* GetObjectIndex (local function)
********************************************************************************/
static HRESULT BindCtxImpl_GetObjectIndex(BindCtxImpl* This,
IUnknown* punk,
LPOLESTR pszkey,
DWORD *index)
{
DWORD i;
BYTE found=0;
TRACE("(%p,%p,%p,%p)\n",This,punk,pszkey,index);
if (punk==NULL)
/* search object identified by a register key */
for(i=0; ( (i<This->bindCtxTableLastIndex) && (!found));i++)
{
if(This->bindCtxTable[i].regType==1){
if ( ( (This->bindCtxTable[i].pkeyObj==NULL) && (pszkey==NULL) ) ||
( (This->bindCtxTable[i].pkeyObj!=NULL) &&
(pszkey!=NULL) &&
(lstrcmpW(This->bindCtxTable[i].pkeyObj,pszkey)==0)
)
)
found=1;
}
}
else
/* search object identified by a moniker*/
for(i=0; ( (i<This->bindCtxTableLastIndex) && (!found));i++)
if(This->bindCtxTable[i].pObj==punk)
found=1;
if (index != NULL)
*index=i-1;
if (found)
return S_OK;
TRACE("key not found\n");
return S_FALSE;
}
static HRESULT BindCtxImpl_ExpandTable(BindCtxImpl *This)
{
if (!This->bindCtxTableSize)
{
This->bindCtxTableSize = BINDCTX_FIRST_TABLE_SIZE;
This->bindCtxTable = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,
This->bindCtxTableSize * sizeof(BindCtxObject));
}
else
{
This->bindCtxTableSize *= 2;
This->bindCtxTable = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,This->bindCtxTable,
This->bindCtxTableSize * sizeof(BindCtxObject));
}
if (!This->bindCtxTable)
return E_OUTOFMEMORY;
return S_OK;
}
/* Virtual function table for the BindCtx class. */
static const IBindCtxVtbl VT_BindCtxImpl =
{
BindCtxImpl_QueryInterface,
BindCtxImpl_AddRef,
BindCtxImpl_Release,
BindCtxImpl_RegisterObjectBound,
BindCtxImpl_RevokeObjectBound,
BindCtxImpl_ReleaseBoundObjects,
BindCtxImpl_SetBindOptions,
BindCtxImpl_GetBindOptions,
BindCtxImpl_GetRunningObjectTable,
BindCtxImpl_RegisterObjectParam,
BindCtxImpl_GetObjectParam,
BindCtxImpl_EnumObjectParam,
BindCtxImpl_RevokeObjectParam
};
/******************************************************************************
* BindCtx_Construct (local function)
*******************************************************************************/
static HRESULT BindCtxImpl_Construct(BindCtxImpl* This)
{
TRACE("(%p)\n",This);
/* Initialize the virtual function table.*/
This->IBindCtx_iface.lpVtbl = &VT_BindCtxImpl;
This->ref = 0;
/* Initialize the BIND_OPTS2 structure */
This->bindOption2.cbStruct = sizeof(BIND_OPTS2);
This->bindOption2.grfFlags = 0;
This->bindOption2.grfMode = STGM_READWRITE;
This->bindOption2.dwTickCountDeadline = 0;
This->bindOption2.dwTrackFlags = 0;
This->bindOption2.dwClassContext = CLSCTX_SERVER;
This->bindOption2.locale = GetThreadLocale();
This->bindOption2.pServerInfo = 0;
/* Initialize the bindctx table */
This->bindCtxTableSize=0;
This->bindCtxTableLastIndex=0;
This->bindCtxTable = NULL;
return S_OK;
}
/******************************************************************************
* CreateBindCtx (OLE32.@)
*
* Creates a bind context. A bind context encompasses information and options
* used when binding to a moniker.
*
* PARAMS
* reserved [I] Reserved. Set to 0.
* ppbc [O] Address that receives the bind context object.
*
* RETURNS
* Success: S_OK.
* Failure: Any HRESULT code.
*/
HRESULT WINAPI CreateBindCtx(DWORD reserved, LPBC * ppbc)
{
BindCtxImpl* newBindCtx;
HRESULT hr;
TRACE("(%d,%p)\n",reserved,ppbc);
if (!ppbc) return E_INVALIDARG;
*ppbc = NULL;
if (reserved != 0)
{
ERR("reserved should be 0, not 0x%x\n", reserved);
return E_INVALIDARG;
}
newBindCtx = HeapAlloc(GetProcessHeap(), 0, sizeof(BindCtxImpl));
if (newBindCtx == 0)
return E_OUTOFMEMORY;
hr = BindCtxImpl_Construct(newBindCtx);
if (FAILED(hr))
{
HeapFree(GetProcessHeap(),0,newBindCtx);
return hr;
}
return BindCtxImpl_QueryInterface(&newBindCtx->IBindCtx_iface,&IID_IBindCtx,(void**)ppbc);
}
/******************************************************************************
* BindMoniker [OLE32.@]
*
* Binds to a moniker.
*
* PARAMS
* pmk [I] Moniker to bind to.
* grfOpt [I] Reserved option flags. Set to 0.
* riid [I] ID of the interface to bind to.
* pvResult [O] Address that receives the interface of the object that was bound to.
*
* RETURNS
* Success: S_OK.
* Failure: Any HRESULT code.
*/
HRESULT WINAPI BindMoniker(LPMONIKER pmk, DWORD grfOpt, REFIID riid, LPVOID * ppvResult)
{
HRESULT res;
IBindCtx * pbc;
TRACE("(%p, %x, %s, %p)\n", pmk, grfOpt, debugstr_guid(riid), ppvResult);
res = CreateBindCtx(grfOpt, &pbc);
if (SUCCEEDED(res))
{
res = IMoniker_BindToObject(pmk, pbc, NULL, riid, ppvResult);
IBindCtx_Release(pbc);
}
return res;
}
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