550 lines
14 KiB
C
550 lines
14 KiB
C
/*
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* SHLWAPI Registry Stream functions
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*
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* Copyright 1999 Juergen Schmied
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* Copyright 2002 Jon Griffiths
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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 <stdarg.h>
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#include <string.h>
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#define COBJMACROS
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#include "winerror.h"
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#include "windef.h"
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#include "winbase.h"
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#include "objbase.h"
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#include "winreg.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(shell);
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typedef struct
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{
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const IStreamVtbl *lpVtbl;
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LONG ref;
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HKEY hKey;
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LPBYTE pbBuffer;
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DWORD dwLength;
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DWORD dwPos;
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} ISHRegStream;
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/**************************************************************************
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* IStream_fnQueryInterface
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*/
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static HRESULT WINAPI IStream_fnQueryInterface(IStream *iface, REFIID riid, LPVOID *ppvObj)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)->(\n\tIID:\t%s,%p)\n",This,debugstr_guid(riid),ppvObj);
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*ppvObj = NULL;
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if(IsEqualIID(riid, &IID_IUnknown)) /*IUnknown*/
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*ppvObj = This;
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else if(IsEqualIID(riid, &IID_IStream)) /*IStream*/
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*ppvObj = This;
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if(*ppvObj)
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{
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IStream_AddRef((IStream*)*ppvObj);
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TRACE("-- Interface: (%p)->(%p)\n",ppvObj,*ppvObj);
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return S_OK;
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}
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TRACE("-- Interface: E_NOINTERFACE\n");
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return E_NOINTERFACE;
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}
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/**************************************************************************
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* IStream_fnAddRef
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*/
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static ULONG WINAPI IStream_fnAddRef(IStream *iface)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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ULONG refCount = InterlockedIncrement(&This->ref);
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TRACE("(%p)->(ref before=%lu)\n",This, refCount - 1);
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return refCount;
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}
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/**************************************************************************
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* IStream_fnRelease
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*/
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static ULONG WINAPI IStream_fnRelease(IStream *iface)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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ULONG refCount = InterlockedDecrement(&This->ref);
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TRACE("(%p)->(ref before=%lu)\n",This, refCount + 1);
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if (!refCount)
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{
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TRACE(" destroying SHReg IStream (%p)\n",This);
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HeapFree(GetProcessHeap(),0,This->pbBuffer);
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if (This->hKey)
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RegCloseKey(This->hKey);
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HeapFree(GetProcessHeap(),0,This);
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return 0;
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}
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return refCount;
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}
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/**************************************************************************
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* IStream_fnRead
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*/
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static HRESULT WINAPI IStream_fnRead (IStream * iface, void* pv, ULONG cb, ULONG* pcbRead)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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DWORD dwBytesToRead, dwBytesLeft;
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TRACE("(%p)->(%p,0x%08lx,%p)\n",This, pv, cb, pcbRead);
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if (!pv)
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return STG_E_INVALIDPOINTER;
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dwBytesLeft = This->dwLength - This->dwPos;
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if ( 0 >= dwBytesLeft ) /* end of buffer */
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return S_FALSE;
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dwBytesToRead = ( cb > dwBytesLeft) ? dwBytesLeft : cb;
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memmove ( pv, (This->pbBuffer) + (This->dwPos), dwBytesToRead);
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This->dwPos += dwBytesToRead; /* adjust pointer */
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if (pcbRead)
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*pcbRead = dwBytesToRead;
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return S_OK;
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}
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/**************************************************************************
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* IStream_fnWrite
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*/
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static HRESULT WINAPI IStream_fnWrite (IStream * iface, const void* pv, ULONG cb, ULONG* pcbWritten)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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if (pcbWritten)
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*pcbWritten = 0;
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return E_NOTIMPL;
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}
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/**************************************************************************
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* IStream_fnSeek
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*/
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static HRESULT WINAPI IStream_fnSeek (IStream * iface, LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER* plibNewPosition)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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if (plibNewPosition)
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plibNewPosition->QuadPart = 0;
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return E_NOTIMPL;
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}
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/**************************************************************************
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* IStream_fnSetSize
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*/
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static HRESULT WINAPI IStream_fnSetSize (IStream * iface, ULARGE_INTEGER libNewSize)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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return E_NOTIMPL;
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}
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/**************************************************************************
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* IStream_fnCopyTo
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*/
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static HRESULT WINAPI IStream_fnCopyTo (IStream * iface, IStream* pstm, ULARGE_INTEGER cb, ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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if (pcbRead)
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pcbRead->QuadPart = 0;
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if (pcbWritten)
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pcbWritten->QuadPart = 0;
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return E_NOTIMPL;
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}
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/**************************************************************************
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* IStream_fnCommit
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*/
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static HRESULT WINAPI IStream_fnCommit (IStream * iface, DWORD grfCommitFlags)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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return E_NOTIMPL;
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}
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/**************************************************************************
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* IStream_fnRevert
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*/
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static HRESULT WINAPI IStream_fnRevert (IStream * iface)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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return E_NOTIMPL;
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}
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/**************************************************************************
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* IStream_fnLockUnlockRegion
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*/
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static HRESULT WINAPI IStream_fnLockUnlockRegion (IStream * iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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return E_NOTIMPL;
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}
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/*************************************************************************
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* IStream_fnStat
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*/
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static HRESULT WINAPI IStream_fnStat (IStream * iface, STATSTG* pstatstg, DWORD grfStatFlag)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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return E_NOTIMPL;
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}
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/*************************************************************************
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* IStream_fnClone
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*/
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static HRESULT WINAPI IStream_fnClone (IStream * iface, IStream** ppstm)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n",This);
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if (ppstm)
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*ppstm = NULL;
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return E_NOTIMPL;
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}
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static const IStreamVtbl rstvt =
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{
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IStream_fnQueryInterface,
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IStream_fnAddRef,
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IStream_fnRelease,
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IStream_fnRead,
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IStream_fnWrite,
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IStream_fnSeek,
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IStream_fnSetSize,
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IStream_fnCopyTo,
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IStream_fnCommit,
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IStream_fnRevert,
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IStream_fnLockUnlockRegion,
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IStream_fnLockUnlockRegion,
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IStream_fnStat,
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IStream_fnClone
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};
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/* Methods overridden by the dummy stream */
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/**************************************************************************
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* IStream_fnAddRefDummy
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*/
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static ULONG WINAPI IStream_fnAddRefDummy(IStream *iface)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n", This);
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return 2;
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}
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/**************************************************************************
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* IStream_fnReleaseDummy
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*/
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static ULONG WINAPI IStream_fnReleaseDummy(IStream *iface)
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{
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ISHRegStream *This = (ISHRegStream *)iface;
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TRACE("(%p)\n", This);
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return 1;
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}
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/**************************************************************************
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* IStream_fnReadDummy
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*/
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static HRESULT WINAPI IStream_fnReadDummy(IStream *iface, LPVOID pv, ULONG cb, ULONG* pcbRead)
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{
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if (pcbRead)
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*pcbRead = 0;
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return E_NOTIMPL;
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}
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static const IStreamVtbl DummyRegStreamVTable =
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{
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IStream_fnQueryInterface,
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IStream_fnAddRefDummy, /* Overridden */
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IStream_fnReleaseDummy, /* Overridden */
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IStream_fnReadDummy, /* Overridden */
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IStream_fnWrite,
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IStream_fnSeek,
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IStream_fnSetSize,
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IStream_fnCopyTo,
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IStream_fnCommit,
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IStream_fnRevert,
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IStream_fnLockUnlockRegion,
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IStream_fnLockUnlockRegion,
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IStream_fnStat,
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IStream_fnClone
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};
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/* Dummy registry stream object */
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static ISHRegStream rsDummyRegStream =
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{
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&DummyRegStreamVTable,
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1,
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NULL,
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NULL,
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0,
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0
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};
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/**************************************************************************
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* IStream_Create
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*
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* Internal helper: Create and initialise a new registry stream object.
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*/
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static IStream *IStream_Create(HKEY hKey, LPBYTE pbBuffer, DWORD dwLength)
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{
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ISHRegStream* regStream;
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regStream = HeapAlloc(GetProcessHeap(), 0, sizeof(ISHRegStream));
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if (regStream)
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{
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regStream->lpVtbl = &rstvt;
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regStream->ref = 1;
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regStream->hKey = hKey;
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regStream->pbBuffer = pbBuffer;
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regStream->dwLength = dwLength;
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regStream->dwPos = 0;
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}
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TRACE ("Returning %p\n", regStream);
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return (IStream *)regStream;
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}
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/*************************************************************************
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* SHOpenRegStream2A [SHLWAPI.@]
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*
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* Create a stream to read binary registry data.
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*
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* PARAMS
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* hKey [I] Registry handle
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* pszSubkey [I] The sub key name
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* pszValue [I] The value name under the sub key
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* dwMode [I] Unused
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*
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* RETURNS
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* Success: An IStream interface referring to the registry data
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* Failure: NULL, if the registry key could not be opened or is not binary.
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*/
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IStream * WINAPI SHOpenRegStream2A(HKEY hKey, LPCSTR pszSubkey,
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LPCSTR pszValue,DWORD dwMode)
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{
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HKEY hStrKey = NULL;
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LPBYTE lpBuff = NULL;
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DWORD dwLength, dwType;
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TRACE("(%p,%s,%s,0x%08lx)\n", hKey, pszSubkey, pszValue, dwMode);
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/* Open the key, read in binary data and create stream */
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if (!RegOpenKeyExA (hKey, pszSubkey, 0, KEY_READ, &hStrKey) &&
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!RegQueryValueExA (hStrKey, pszValue, 0, 0, 0, &dwLength) &&
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(lpBuff = HeapAlloc (GetProcessHeap(), 0, dwLength)) &&
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!RegQueryValueExA (hStrKey, pszValue, 0, &dwType, lpBuff, &dwLength) &&
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dwType == REG_BINARY)
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return IStream_Create(hStrKey, lpBuff, dwLength);
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HeapFree (GetProcessHeap(), 0, lpBuff);
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if (hStrKey)
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RegCloseKey(hStrKey);
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return NULL;
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}
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/*************************************************************************
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* SHOpenRegStream2W [SHLWAPI.@]
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*
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* See SHOpenRegStream2A.
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*/
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IStream * WINAPI SHOpenRegStream2W(HKEY hKey, LPCWSTR pszSubkey,
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LPCWSTR pszValue, DWORD dwMode)
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{
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HKEY hStrKey = NULL;
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LPBYTE lpBuff = NULL;
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DWORD dwLength, dwType;
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TRACE("(%p,%s,%s,0x%08lx)\n", hKey, debugstr_w(pszSubkey),
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debugstr_w(pszValue), dwMode);
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/* Open the key, read in binary data and create stream */
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if (!RegOpenKeyExW (hKey, pszSubkey, 0, KEY_READ, &hStrKey) &&
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!RegQueryValueExW (hStrKey, pszValue, 0, 0, 0, &dwLength) &&
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(lpBuff = HeapAlloc (GetProcessHeap(), 0, dwLength)) &&
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!RegQueryValueExW (hStrKey, pszValue, 0, &dwType, lpBuff, &dwLength) &&
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dwType == REG_BINARY)
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return IStream_Create(hStrKey, lpBuff, dwLength);
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HeapFree (GetProcessHeap(), 0, lpBuff);
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if (hStrKey)
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RegCloseKey(hStrKey);
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return NULL;
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}
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/*************************************************************************
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* SHOpenRegStreamA [SHLWAPI.@]
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*
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* Create a stream to read binary registry data.
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*
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* PARAMS
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* hKey [I] Registry handle
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* pszSubkey [I] The sub key name
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* pszValue [I] The value name under the sub key
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* dwMode [I] STGM mode for opening the file
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*
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* RETURNS
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* Success: An IStream interface referring to the registry data
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* Failure: If the registry key could not be opened or is not binary,
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* A dummy (empty) IStream object is returned.
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*/
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IStream * WINAPI SHOpenRegStreamA(HKEY hkey, LPCSTR pszSubkey,
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LPCSTR pszValue, DWORD dwMode)
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{
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IStream *iStream;
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TRACE("(%p,%s,%s,0x%08lx)\n", hkey, pszSubkey, pszValue, dwMode);
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iStream = SHOpenRegStream2A(hkey, pszSubkey, pszValue, dwMode);
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return iStream ? iStream : (IStream *)&rsDummyRegStream;
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}
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/*************************************************************************
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* SHOpenRegStreamW [SHLWAPI.@]
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*
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* See SHOpenRegStreamA.
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*/
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IStream * WINAPI SHOpenRegStreamW(HKEY hkey, LPCWSTR pszSubkey,
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LPCWSTR pszValue, DWORD dwMode)
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{
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IStream *iStream;
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TRACE("(%p,%s,%s,0x%08lx)\n", hkey, debugstr_w(pszSubkey),
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debugstr_w(pszValue), dwMode);
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iStream = SHOpenRegStream2W(hkey, pszSubkey, pszValue, dwMode);
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return iStream ? iStream : (IStream *)&rsDummyRegStream;
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}
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/*************************************************************************
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* @ [SHLWAPI.12]
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*
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* Create an IStream object on a block of memory.
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*
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* PARAMS
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* lpbData [I] Memory block to create the IStream object on
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* dwDataLen [I] Length of data block
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*
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* RETURNS
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* Success: A pointer to the IStream object.
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* Failure: NULL, if any parameters are invalid or an error occurs.
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*
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* NOTES
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* A copy of the memory pointed to by lpbData is made, and is freed
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* when the stream is released.
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*/
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IStream * WINAPI SHCreateMemStream(LPBYTE lpbData, DWORD dwDataLen)
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{
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IStream *iStrmRet = NULL;
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TRACE("(%p,%ld)\n", lpbData, dwDataLen);
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if (lpbData)
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{
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LPBYTE lpbDup = HeapAlloc(GetProcessHeap(), 0, dwDataLen);
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if (lpbDup)
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{
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memcpy(lpbDup, lpbData, dwDataLen);
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iStrmRet = IStream_Create(NULL, lpbDup, dwDataLen);
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if (!iStrmRet)
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HeapFree(GetProcessHeap(), 0, lpbDup);
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}
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}
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return iStrmRet;
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}
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/*************************************************************************
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* SHCreateStreamWrapper [SHLWAPI.@]
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*
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* Create an IStream object on a block of memory.
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*
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* PARAMS
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* lpbData [I] Memory block to create the IStream object on
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* dwDataLen [I] Length of data block
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* dwReserved [I] Reserved, Must be 0.
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* lppStream [O] Destination for IStream object
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*
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* RETURNS
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* Success: S_OK. lppStream contains the new IStream object.
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* Failure: E_INVALIDARG, if any parameters are invalid,
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* E_OUTOFMEMORY if memory allocation fails.
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*
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* NOTES
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* The stream assumes ownership of the memory passed to it.
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*/
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HRESULT WINAPI SHCreateStreamWrapper(LPBYTE lpbData, DWORD dwDataLen,
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DWORD dwReserved, IStream **lppStream)
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{
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IStream* lpStream;
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if (lppStream)
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*lppStream = NULL;
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if(dwReserved || !lppStream)
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return E_INVALIDARG;
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lpStream = IStream_Create(NULL, lpbData, dwDataLen);
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if(!lpStream)
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return E_OUTOFMEMORY;
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IStream_QueryInterface(lpStream, &IID_IStream, (void**)lppStream);
|
|
IStream_Release(lpStream);
|
|
return S_OK;
|
|
}
|