forked from Mirrors/wine-wine
400 lines
10 KiB
C
400 lines
10 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 "shlwapi.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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IStream IStream_iface;
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LONG ref;
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LPBYTE pbBuffer;
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DWORD dwLength;
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DWORD dwPos;
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DWORD dwMode;
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} ISHRegStream;
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static inline ISHRegStream *impl_from_IStream(IStream *iface)
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{
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return CONTAINING_RECORD(iface, ISHRegStream, IStream_iface);
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}
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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 = impl_from_IStream(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) || IsEqualIID(riid, &IID_IStream))
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*ppvObj = &This->IStream_iface;
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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 = impl_from_IStream(iface);
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ULONG refCount = InterlockedIncrement(&This->ref);
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TRACE("(%p)->(ref before=%u)\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 = impl_from_IStream(iface);
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ULONG refCount = InterlockedDecrement(&This->ref);
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TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
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if (!refCount)
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{
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HeapFree(GetProcessHeap(),0,This->pbBuffer);
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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 = impl_from_IStream(iface);
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DWORD dwBytesToRead;
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TRACE("(%p)->(%p,0x%08x,%p)\n",This, pv, cb, pcbRead);
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if (This->dwPos >= This->dwLength)
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dwBytesToRead = 0;
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else
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dwBytesToRead = This->dwLength - This->dwPos;
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dwBytesToRead = (cb > dwBytesToRead) ? dwBytesToRead : cb;
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if (dwBytesToRead != 0) /* not at end of buffer and we want to read something */
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{
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memmove(pv, This->pbBuffer + This->dwPos, dwBytesToRead);
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This->dwPos += dwBytesToRead; /* adjust pointer */
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}
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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 = impl_from_IStream(iface);
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DWORD newLen = This->dwPos + cb;
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TRACE("(%p, %p, %d, %p)\n",This, pv, cb, pcbWritten);
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if (newLen < This->dwPos) /* overflow */
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return STG_E_INSUFFICIENTMEMORY;
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if (newLen > This->dwLength)
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{
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LPBYTE newBuf = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->pbBuffer, newLen);
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if (!newBuf)
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return STG_E_INSUFFICIENTMEMORY;
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This->dwLength = newLen;
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This->pbBuffer = newBuf;
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}
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memmove(This->pbBuffer + This->dwPos, pv, cb);
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This->dwPos += cb; /* adjust pointer */
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if (pcbWritten)
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*pcbWritten = cb;
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return S_OK;
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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 = impl_from_IStream(iface);
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LARGE_INTEGER tmp;
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TRACE("(%p, %s, %d %p)\n", This,
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wine_dbgstr_longlong(dlibMove.QuadPart), dwOrigin, plibNewPosition);
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if (dwOrigin == STREAM_SEEK_SET)
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tmp = dlibMove;
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else if (dwOrigin == STREAM_SEEK_CUR)
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tmp.QuadPart = This->dwPos + dlibMove.QuadPart;
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else if (dwOrigin == STREAM_SEEK_END)
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tmp.QuadPart = This->dwLength + dlibMove.QuadPart;
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else
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return STG_E_INVALIDPARAMETER;
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if (tmp.QuadPart < 0)
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return STG_E_INVALIDFUNCTION;
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/* we cut off the high part here */
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This->dwPos = tmp.u.LowPart;
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if (plibNewPosition)
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plibNewPosition->QuadPart = This->dwPos;
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return S_OK;
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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 = impl_from_IStream(iface);
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DWORD newLen;
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LPBYTE newBuf;
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TRACE("(%p, %s)\n", This, wine_dbgstr_longlong(libNewSize.QuadPart));
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/* we cut off the high part here */
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newLen = libNewSize.u.LowPart;
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newBuf = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->pbBuffer, newLen);
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if (!newBuf)
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return STG_E_INSUFFICIENTMEMORY;
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This->pbBuffer = newBuf;
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This->dwLength = newLen;
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return S_OK;
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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 = impl_from_IStream(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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/* TODO implement */
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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 = impl_from_IStream(iface);
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TRACE("(%p)\n",This);
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/* commit not supported by this stream */
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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 = impl_from_IStream(iface);
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TRACE("(%p)\n",This);
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/* revert not supported by this stream */
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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 = impl_from_IStream(iface);
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TRACE("(%p)\n",This);
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/* lock/unlock not supported by this stream */
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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 = impl_from_IStream(iface);
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TRACE("(%p, %p, %d)\n",This,pstatstg,grfStatFlag);
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pstatstg->pwcsName = NULL;
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pstatstg->type = STGTY_STREAM;
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pstatstg->cbSize.QuadPart = This->dwLength;
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pstatstg->mtime.dwHighDateTime = 0;
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pstatstg->mtime.dwLowDateTime = 0;
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pstatstg->ctime.dwHighDateTime = 0;
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pstatstg->ctime.dwLowDateTime = 0;
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pstatstg->atime.dwHighDateTime = 0;
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pstatstg->atime.dwLowDateTime = 0;
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pstatstg->grfMode = This->dwMode;
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pstatstg->grfLocksSupported = 0;
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pstatstg->clsid = CLSID_NULL;
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pstatstg->grfStateBits = 0;
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pstatstg->reserved = 0;
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return S_OK;
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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 = impl_from_IStream(iface);
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TRACE("(%p)\n",This);
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*ppstm = NULL;
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/* clone not supported by this stream */
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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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/**************************************************************************
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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 ISHRegStream *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->IStream_iface.lpVtbl = &rstvt;
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regStream->ref = 1;
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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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regStream->dwMode = STGM_READWRITE;
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}
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TRACE ("Returning %p\n", regStream);
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return regStream;
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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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ISHRegStream *strm;
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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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strm = IStream_Create(NULL, lpbData, dwDataLen);
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if(!strm)
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return E_OUTOFMEMORY;
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IStream_QueryInterface(&strm->IStream_iface, &IID_IStream, (void**)lppStream);
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IStream_Release(&strm->IStream_iface);
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return S_OK;
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}
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