mirror of
https://github.com/reactos/reactos.git
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701 lines
18 KiB
C
701 lines
18 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 "precomp.h"
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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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HKEY hKey;
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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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union {
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LPSTR keyNameA;
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LPWSTR keyNameW;
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}u;
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BOOL bUnicode;
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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)) /*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 = 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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TRACE(" destroying SHReg IStream (%p)\n",This);
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if (This->hKey)
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{
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/* write back data in REG_BINARY */
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if (This->dwMode == STGM_READWRITE || This->dwMode == STGM_WRITE)
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{
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if (This->dwLength)
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{
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if (This->bUnicode)
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RegSetValueExW(This->hKey, This->u.keyNameW, 0, REG_BINARY,
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(const BYTE *) This->pbBuffer, This->dwLength);
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else
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RegSetValueExA(This->hKey, This->u.keyNameA, 0, REG_BINARY,
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(const BYTE *) This->pbBuffer, This->dwLength);
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}
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else
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{
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if (This->bUnicode)
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RegDeleteValueW(This->hKey, This->u.keyNameW);
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else
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RegDeleteValueA(This->hKey, This->u.keyNameA);
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}
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}
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RegCloseKey(This->hKey);
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}
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HeapFree(GetProcessHeap(),0,This->u.keyNameA);
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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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/* 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 = impl_from_IStream(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 = impl_from_IStream(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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STGM_READWRITE,
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{NULL},
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FALSE
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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->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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regStream->dwMode = STGM_READWRITE;
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regStream->u.keyNameA = NULL;
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regStream->bUnicode = FALSE;
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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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* 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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ISHRegStream *tmp;
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HKEY hStrKey = NULL;
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LPBYTE lpBuff = NULL;
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DWORD dwLength = 0;
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LONG ret;
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TRACE("(%p,%s,%s,0x%08x)\n", hKey, pszSubkey, pszValue, dwMode);
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if (dwMode == STGM_READ)
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ret = RegOpenKeyExA(hKey, pszSubkey, 0, KEY_READ, &hStrKey);
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else /* in write mode we make sure the subkey exits */
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ret = RegCreateKeyExA(hKey, pszSubkey, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &hStrKey, NULL);
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if (ret == ERROR_SUCCESS)
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{
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if (dwMode == STGM_READ || dwMode == STGM_READWRITE)
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{
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/* read initial data */
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ret = RegQueryValueExA(hStrKey, pszValue, 0, 0, 0, &dwLength);
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if (ret == ERROR_SUCCESS && dwLength)
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{
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lpBuff = HeapAlloc(GetProcessHeap(), 0, dwLength);
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RegQueryValueExA(hStrKey, pszValue, 0, 0, lpBuff, &dwLength);
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}
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}
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if (!dwLength)
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lpBuff = HeapAlloc(GetProcessHeap(), 0, dwLength);
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tmp = IStream_Create(hStrKey, lpBuff, dwLength);
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if(tmp)
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{
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if(pszValue)
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{
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int len = lstrlenA(pszValue) + 1;
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tmp->u.keyNameA = HeapAlloc(GetProcessHeap(), 0, len);
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memcpy(tmp->u.keyNameA, pszValue, len);
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}
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tmp->dwMode = dwMode;
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tmp->bUnicode = FALSE;
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return &tmp->IStream_iface;
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}
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}
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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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ISHRegStream *tmp;
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HKEY hStrKey = NULL;
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LPBYTE lpBuff = NULL;
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DWORD dwLength = 0;
|
|
LONG ret;
|
|
|
|
TRACE("(%p,%s,%s,0x%08x)\n", hKey, debugstr_w(pszSubkey),
|
|
debugstr_w(pszValue), dwMode);
|
|
|
|
if (dwMode == STGM_READ)
|
|
ret = RegOpenKeyExW(hKey, pszSubkey, 0, KEY_READ, &hStrKey);
|
|
else /* in write mode we make sure the subkey exits */
|
|
ret = RegCreateKeyExW(hKey, pszSubkey, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &hStrKey, NULL);
|
|
|
|
if (ret == ERROR_SUCCESS)
|
|
{
|
|
if (dwMode == STGM_READ || dwMode == STGM_READWRITE)
|
|
{
|
|
/* read initial data */
|
|
ret = RegQueryValueExW(hStrKey, pszValue, 0, 0, 0, &dwLength);
|
|
if (ret == ERROR_SUCCESS && dwLength)
|
|
{
|
|
lpBuff = HeapAlloc(GetProcessHeap(), 0, dwLength);
|
|
RegQueryValueExW(hStrKey, pszValue, 0, 0, lpBuff, &dwLength);
|
|
}
|
|
}
|
|
|
|
if (!dwLength)
|
|
lpBuff = HeapAlloc(GetProcessHeap(), 0, dwLength);
|
|
|
|
tmp = IStream_Create(hStrKey, lpBuff, dwLength);
|
|
if(tmp)
|
|
{
|
|
if(pszValue)
|
|
{
|
|
int len = lstrlenW(pszValue) + 1;
|
|
tmp->u.keyNameW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
|
|
memcpy(tmp->u.keyNameW, pszValue, len * sizeof(WCHAR));
|
|
}
|
|
|
|
tmp->dwMode = dwMode;
|
|
tmp->bUnicode = TRUE;
|
|
return &tmp->IStream_iface;
|
|
}
|
|
}
|
|
|
|
HeapFree(GetProcessHeap(), 0, lpBuff);
|
|
if (hStrKey)
|
|
RegCloseKey(hStrKey);
|
|
return NULL;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* SHOpenRegStreamA [SHLWAPI.@]
|
|
*
|
|
* Create a stream to read binary registry data.
|
|
*
|
|
* PARAMS
|
|
* hKey [I] Registry handle
|
|
* pszSubkey [I] The sub key name
|
|
* pszValue [I] The value name under the sub key
|
|
* dwMode [I] STGM mode for opening the file
|
|
*
|
|
* RETURNS
|
|
* Success: An IStream interface referring to the registry data
|
|
* Failure: If the registry key could not be opened or is not binary,
|
|
* A dummy (empty) IStream object is returned.
|
|
*/
|
|
IStream * WINAPI SHOpenRegStreamA(HKEY hkey, LPCSTR pszSubkey,
|
|
LPCSTR pszValue, DWORD dwMode)
|
|
{
|
|
IStream *iStream;
|
|
|
|
TRACE("(%p,%s,%s,0x%08x)\n", hkey, pszSubkey, pszValue, dwMode);
|
|
|
|
iStream = SHOpenRegStream2A(hkey, pszSubkey, pszValue, dwMode);
|
|
return iStream ? iStream : &rsDummyRegStream.IStream_iface;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* SHOpenRegStreamW [SHLWAPI.@]
|
|
*
|
|
* See SHOpenRegStreamA.
|
|
*/
|
|
IStream * WINAPI SHOpenRegStreamW(HKEY hkey, LPCWSTR pszSubkey,
|
|
LPCWSTR pszValue, DWORD dwMode)
|
|
{
|
|
IStream *iStream;
|
|
|
|
TRACE("(%p,%s,%s,0x%08x)\n", hkey, debugstr_w(pszSubkey),
|
|
debugstr_w(pszValue), dwMode);
|
|
iStream = SHOpenRegStream2W(hkey, pszSubkey, pszValue, dwMode);
|
|
return iStream ? iStream : &rsDummyRegStream.IStream_iface;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* @ [SHLWAPI.12]
|
|
*
|
|
* Create an IStream object on a block of memory.
|
|
*
|
|
* PARAMS
|
|
* lpbData [I] Memory block to create the IStream object on
|
|
* dwDataLen [I] Length of data block
|
|
*
|
|
* RETURNS
|
|
* Success: A pointer to the IStream object.
|
|
* Failure: NULL, if any parameters are invalid or an error occurs.
|
|
*
|
|
* NOTES
|
|
* A copy of the memory pointed to by lpbData is made, and is freed
|
|
* when the stream is released.
|
|
*/
|
|
IStream * WINAPI SHCreateMemStream(const BYTE *lpbData, UINT dwDataLen)
|
|
{
|
|
ISHRegStream *strm = NULL;
|
|
LPBYTE lpbDup;
|
|
|
|
TRACE("(%p,%d)\n", lpbData, dwDataLen);
|
|
|
|
if (!lpbData)
|
|
dwDataLen = 0;
|
|
|
|
lpbDup = HeapAlloc(GetProcessHeap(), 0, dwDataLen);
|
|
|
|
if (lpbDup)
|
|
{
|
|
memcpy(lpbDup, lpbData, dwDataLen);
|
|
strm = IStream_Create(NULL, lpbDup, dwDataLen);
|
|
|
|
if (!strm)
|
|
HeapFree(GetProcessHeap(), 0, lpbDup);
|
|
}
|
|
return &strm->IStream_iface;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* SHCreateStreamWrapper [SHLWAPI.@]
|
|
*
|
|
* Create an IStream object on a block of memory.
|
|
*
|
|
* PARAMS
|
|
* lpbData [I] Memory block to create the IStream object on
|
|
* dwDataLen [I] Length of data block
|
|
* dwReserved [I] Reserved, Must be 0.
|
|
* lppStream [O] Destination for IStream object
|
|
*
|
|
* RETURNS
|
|
* Success: S_OK. lppStream contains the new IStream object.
|
|
* Failure: E_INVALIDARG, if any parameters are invalid,
|
|
* E_OUTOFMEMORY if memory allocation fails.
|
|
*
|
|
* NOTES
|
|
* The stream assumes ownership of the memory passed to it.
|
|
*/
|
|
HRESULT WINAPI SHCreateStreamWrapper(LPBYTE lpbData, DWORD dwDataLen,
|
|
DWORD dwReserved, IStream **lppStream)
|
|
{
|
|
ISHRegStream *strm;
|
|
|
|
if (lppStream)
|
|
*lppStream = NULL;
|
|
|
|
if(dwReserved || !lppStream)
|
|
return E_INVALIDARG;
|
|
|
|
strm = IStream_Create(NULL, lpbData, dwDataLen);
|
|
|
|
if(!strm)
|
|
return E_OUTOFMEMORY;
|
|
|
|
IStream_QueryInterface(&strm->IStream_iface, &IID_IStream, (void**)lppStream);
|
|
IStream_Release(&strm->IStream_iface);
|
|
return S_OK;
|
|
}
|