Sweden-Number/dlls/shell32/regstream.c

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/*
* SHRegOpenStream
*/
#include <string.h>
#include "wine/obj_storage.h"
#include "debugtools.h"
#include "heap.h"
#include "winerror.h"
#include "winreg.h"
#include "shell32_main.h"
DEFAULT_DEBUG_CHANNEL(shell)
typedef struct
{ ICOM_VFIELD(IStream);
DWORD ref;
HKEY hKey;
LPSTR pszSubKey;
LPSTR pszValue;
LPBYTE pbBuffer;
DWORD dwLength;
DWORD dwPos;
} ISHRegStream;
static struct ICOM_VTABLE(IStream) rstvt;
/**************************************************************************
* IStream_Constructor()
*/
IStream *IStream_Constructor(HKEY hKey, LPCSTR pszSubKey, LPCSTR pszValue, DWORD grfMode)
{ ISHRegStream* rstr;
DWORD dwType;
rstr = (ISHRegStream*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(ISHRegStream));
ICOM_VTBL(rstr)=&rstvt;
rstr->ref = 1;
if ( ERROR_SUCCESS == RegOpenKeyExA (hKey, pszSubKey, 0, KEY_READ, &(rstr->hKey)))
{ if ( ERROR_SUCCESS == RegQueryValueExA(rstr->hKey, (LPSTR)pszValue,0,0,0,&(rstr->dwLength)))
{
/* read the binary data into the buffer */
rstr->pbBuffer = HeapAlloc(GetProcessHeap(),0,rstr->dwLength);
if (rstr->pbBuffer)
{ if ( ERROR_SUCCESS == RegQueryValueExA(rstr->hKey, (LPSTR)pszValue,0,&dwType,rstr->pbBuffer,&(rstr->dwLength)))
{ if (dwType == REG_BINARY )
{ rstr->pszSubKey = HEAP_strdupA (GetProcessHeap(),0, pszSubKey);
rstr->pszValue = HEAP_strdupA (GetProcessHeap(),0, pszValue);
TRACE("(%p)->0x%08x,%s,%s,0x%08lx\n", rstr, hKey, pszSubKey, pszValue, grfMode);
shell32_ObjCount++;
return (IStream*)rstr;
}
}
HeapFree (GetProcessHeap(),0,rstr->pbBuffer);
}
}
RegCloseKey(rstr->hKey);
}
HeapFree (GetProcessHeap(),0,rstr);
return NULL;
}
/**************************************************************************
* IStream_fnQueryInterface
*/
static HRESULT WINAPI IStream_fnQueryInterface(IStream *iface, REFIID riid, LPVOID *ppvObj)
{
ICOM_THIS(ISHRegStream, iface);
char xriid[50];
WINE_StringFromCLSID((LPCLSID)riid,xriid);
TRACE("(%p)->(\n\tIID:\t%s,%p)\n",This,xriid,ppvObj);
*ppvObj = NULL;
if(IsEqualIID(riid, &IID_IUnknown)) /*IUnknown*/
{ *ppvObj = This;
}
else if(IsEqualIID(riid, &IID_IStream)) /*IStream*/
{ *ppvObj = This;
}
if(*ppvObj)
{
IStream_AddRef((IStream*)*ppvObj);
TRACE("-- Interface: (%p)->(%p)\n",ppvObj,*ppvObj);
return S_OK;
}
TRACE("-- Interface: E_NOINTERFACE\n");
return E_NOINTERFACE;
}
/**************************************************************************
* IStream_fnAddRef
*/
static ULONG WINAPI IStream_fnAddRef(IStream *iface)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)->(count=%lu)\n",This, This->ref);
shell32_ObjCount++;
return ++(This->ref);
}
/**************************************************************************
* IStream_fnRelease
*/
static ULONG WINAPI IStream_fnRelease(IStream *iface)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)->()\n",This);
shell32_ObjCount--;
if (!--(This->ref))
{ TRACE(" destroying SHReg IStream (%p)\n",This);
if (This->pszSubKey)
HeapFree(GetProcessHeap(),0,This->pszSubKey);
if (This->pszValue)
HeapFree(GetProcessHeap(),0,This->pszValue);
if (This->pbBuffer)
HeapFree(GetProcessHeap(),0,This->pbBuffer);
if (This->hKey)
RegCloseKey(This->hKey);
HeapFree(GetProcessHeap(),0,This);
return 0;
}
return This->ref;
}
HRESULT WINAPI IStream_fnRead (IStream * iface, void* pv, ULONG cb, ULONG* pcbRead)
{
ICOM_THIS(ISHRegStream, iface);
DWORD dwBytesToRead, dwBytesLeft;
TRACE("(%p)->(%p,0x%08lx,%p)\n",This, pv, cb, pcbRead);
if ( !pv )
return STG_E_INVALIDPOINTER;
dwBytesLeft = This->dwLength - This->dwPos;
if ( 0 >= dwBytesLeft ) /* end of buffer */
return S_FALSE;
dwBytesToRead = ( cb > dwBytesLeft) ? dwBytesLeft : cb;
memmove ( pv, (This->pbBuffer) + (This->dwPos), dwBytesToRead);
This->dwPos += dwBytesToRead; /* adjust pointer */
if (pcbRead)
*pcbRead = dwBytesToRead;
return S_OK;
}
HRESULT WINAPI IStream_fnWrite (IStream * iface, const void* pv, ULONG cb, ULONG* pcbWritten)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnSeek (IStream * iface, LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER* plibNewPosition)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnSetSize (IStream * iface, ULARGE_INTEGER libNewSize)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnCopyTo (IStream * iface, IStream* pstm, ULARGE_INTEGER cb, ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnCommit (IStream * iface, DWORD grfCommitFlags)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnRevert (IStream * iface)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnLockRegion (IStream * iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnUnlockRegion (IStream * iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnStat (IStream * iface, STATSTG* pstatstg, DWORD grfStatFlag)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
HRESULT WINAPI IStream_fnClone (IStream * iface, IStream** ppstm)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static struct ICOM_VTABLE(IStream) rstvt =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
IStream_fnQueryInterface,
IStream_fnAddRef,
IStream_fnRelease,
IStream_fnRead,
IStream_fnWrite,
IStream_fnSeek,
IStream_fnSetSize,
IStream_fnCopyTo,
IStream_fnCommit,
IStream_fnRevert,
IStream_fnLockRegion,
IStream_fnUnlockRegion,
IStream_fnStat,
IStream_fnClone
};
/*************************************************************************
* OpenRegStream [SHELL32.85]
*
* NOTES
* exported by ordinal
*/
IStream * WINAPI OpenRegStream(HKEY hkey, LPCSTR pszSubkey, LPCSTR pszValue, DWORD grfMode)
{
TRACE("(0x%08x,%s,%s,0x%08lx)\n",hkey, pszSubkey, pszValue, grfMode);
return IStream_Constructor(hkey, pszSubkey, pszValue, grfMode);
}