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675 lines
17 KiB
C
675 lines
17 KiB
C
/*
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* SHLWAPI IStream functions
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*
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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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#define NONAMELESSUNION
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "winnls.h"
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#define NO_SHLWAPI_REG
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#define NO_SHLWAPI_PATH
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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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#define STGM_ACCESS_MODE(stgm) ((stgm)&0x0000f)
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#define STGM_SHARE_MODE(stgm) ((stgm)&0x000f0)
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#define STGM_CREATE_MODE(stgm) ((stgm)&0x0f000)
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/* Layout of ISHFileStream object */
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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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HANDLE hFile;
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DWORD dwMode;
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LPOLESTR lpszPath;
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DWORD type;
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DWORD grfStateBits;
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} ISHFileStream;
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static inline ISHFileStream *impl_from_IStream(IStream *iface)
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{
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return CONTAINING_RECORD(iface, ISHFileStream, IStream_iface);
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}
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static HRESULT WINAPI IStream_fnCommit(IStream*,DWORD);
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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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ISHFileStream *This = impl_from_IStream(iface);
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TRACE("(%p,%s,%p)\n", This, debugstr_guid(riid), ppvObj);
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*ppvObj = NULL;
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if(IsEqualIID(riid, &IID_IUnknown) ||
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IsEqualIID(riid, &IID_IStream))
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{
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IStream_AddRef(iface);
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*ppvObj = iface;
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return S_OK;
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}
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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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ISHFileStream *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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ISHFileStream *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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IStream_fnCommit(iface, 0); /* If ever buffered, this will be needed */
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LocalFree(This->lpszPath);
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CloseHandle(This->hFile);
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HeapFree(GetProcessHeap(), 0, This);
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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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ISHFileStream *This = impl_from_IStream(iface);
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DWORD dwRead = 0;
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TRACE("(%p,%p,0x%08x,%p)\n", This, pv, cb, pcbRead);
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if (!ReadFile(This->hFile, pv, cb, &dwRead, NULL))
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{
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WARN("error %d reading file\n", GetLastError());
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return S_FALSE;
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}
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if (pcbRead)
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*pcbRead = dwRead;
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return dwRead == cb ? S_OK : S_FALSE;
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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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ISHFileStream *This = impl_from_IStream(iface);
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DWORD dwWritten = 0;
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TRACE("(%p,%p,0x%08x,%p)\n", This, pv, cb, pcbWritten);
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switch (STGM_ACCESS_MODE(This->dwMode))
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{
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case STGM_WRITE:
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case STGM_READWRITE:
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break;
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default:
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return STG_E_ACCESSDENIED;
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}
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if (!WriteFile(This->hFile, pv, cb, &dwWritten, NULL))
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return HRESULT_FROM_WIN32(GetLastError());
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if (pcbWritten)
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*pcbWritten = dwWritten;
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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,
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DWORD dwOrigin, ULARGE_INTEGER* pNewPos)
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{
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ISHFileStream *This = impl_from_IStream(iface);
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DWORD dwPos;
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TRACE("(%p,%d,%d,%p)\n", This, dlibMove.u.LowPart, dwOrigin, pNewPos);
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IStream_fnCommit(iface, 0); /* If ever buffered, this will be needed */
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dwPos = SetFilePointer(This->hFile, dlibMove.u.LowPart, NULL, dwOrigin);
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if( dwPos == INVALID_SET_FILE_POINTER )
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return HRESULT_FROM_WIN32(GetLastError());
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if (pNewPos)
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{
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pNewPos->u.HighPart = 0;
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pNewPos->u.LowPart = dwPos;
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}
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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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ISHFileStream *This = impl_from_IStream(iface);
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TRACE("(%p,%d)\n", This, libNewSize.u.LowPart);
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IStream_fnCommit(iface, 0); /* If ever buffered, this will be needed */
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if( ! SetFilePointer( This->hFile, libNewSize.QuadPart, NULL, FILE_BEGIN ) )
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return E_FAIL;
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if( ! SetEndOfFile( This->hFile ) )
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return E_FAIL;
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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,
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ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten)
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{
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ISHFileStream *This = impl_from_IStream(iface);
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char copyBuff[1024];
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ULONGLONG ulSize;
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HRESULT hRet = S_OK;
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TRACE("(%p,%p,%d,%p,%p)\n", This, pstm, cb.u.LowPart, pcbRead, pcbWritten);
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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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if (!pstm)
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return S_OK;
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IStream_fnCommit(iface, 0); /* If ever buffered, this will be needed */
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/* Copy data */
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ulSize = cb.QuadPart;
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while (ulSize)
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{
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ULONG ulLeft, ulRead, ulWritten;
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ulLeft = ulSize > sizeof(copyBuff) ? sizeof(copyBuff) : ulSize;
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/* Read */
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hRet = IStream_fnRead(iface, copyBuff, ulLeft, &ulRead);
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if (FAILED(hRet) || ulRead == 0)
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break;
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if (pcbRead)
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pcbRead->QuadPart += ulRead;
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/* Write */
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hRet = IStream_fnWrite(pstm, copyBuff, ulRead, &ulWritten);
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if (pcbWritten)
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pcbWritten->QuadPart += ulWritten;
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if (FAILED(hRet) || ulWritten != ulLeft)
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break;
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ulSize -= ulLeft;
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}
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return hRet;
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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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ISHFileStream *This = impl_from_IStream(iface);
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TRACE("(%p,%d)\n", This, grfCommitFlags);
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/* Currently unbuffered: This function is not needed */
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return S_OK;
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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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ISHFileStream *This = impl_from_IStream(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,
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ULARGE_INTEGER cb, DWORD dwLockType)
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{
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ISHFileStream *This = impl_from_IStream(iface);
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TRACE("(%p,%d,%d,%d)\n", This, libOffset.u.LowPart, cb.u.LowPart, dwLockType);
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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* lpStat,
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DWORD grfStatFlag)
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{
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ISHFileStream *This = impl_from_IStream(iface);
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BY_HANDLE_FILE_INFORMATION fi;
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TRACE("(%p,%p,%d)\n", This, lpStat, grfStatFlag);
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if (!grfStatFlag)
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return STG_E_INVALIDPOINTER;
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memset(&fi, 0, sizeof(fi));
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GetFileInformationByHandle(This->hFile, &fi);
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if (grfStatFlag & STATFLAG_NONAME)
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lpStat->pwcsName = NULL;
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else
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lpStat->pwcsName = StrDupW(This->lpszPath);
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lpStat->type = This->type;
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lpStat->cbSize.u.LowPart = fi.nFileSizeLow;
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lpStat->cbSize.u.HighPart = fi.nFileSizeHigh;
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lpStat->mtime = fi.ftLastWriteTime;
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lpStat->ctime = fi.ftCreationTime;
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lpStat->atime = fi.ftLastAccessTime;
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lpStat->grfMode = This->dwMode;
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lpStat->grfLocksSupported = 0;
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memcpy(&lpStat->clsid, &IID_IStream, sizeof(CLSID));
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lpStat->grfStateBits = This->grfStateBits;
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lpStat->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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ISHFileStream *This = impl_from_IStream(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 SHLWAPI_fsVTable =
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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 file stream object.
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*/
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static IStream *IStream_Create(LPCWSTR lpszPath, HANDLE hFile, DWORD dwMode)
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{
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ISHFileStream *fileStream;
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fileStream = HeapAlloc(GetProcessHeap(), 0, sizeof(ISHFileStream));
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if (!fileStream) return NULL;
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fileStream->IStream_iface.lpVtbl = &SHLWAPI_fsVTable;
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fileStream->ref = 1;
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fileStream->hFile = hFile;
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fileStream->dwMode = dwMode;
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fileStream->lpszPath = StrDupW(lpszPath);
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fileStream->type = 0; /* FIXME */
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fileStream->grfStateBits = 0; /* FIXME */
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TRACE ("Returning %p\n", fileStream);
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return &fileStream->IStream_iface;
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}
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/*************************************************************************
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* SHCreateStreamOnFileEx [SHLWAPI.@]
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*
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* Create a stream on a file.
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*
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* PARAMS
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* lpszPath [I] Path of file to create stream on
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* dwMode [I] Mode to create stream in
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* dwAttributes [I] Attributes of the file
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* bCreate [I] Whether to create the file if it doesn't exist
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* lpTemplate [I] Reserved, must be NULL
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* lppStream [O] Destination for created stream
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*
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* RETURNS
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* Success: S_OK. lppStream contains the new stream object
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* Failure: E_INVALIDARG if any parameter is invalid, or an HRESULT error code
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*
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* NOTES
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* This function is available in Unicode only.
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*/
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HRESULT WINAPI SHCreateStreamOnFileEx(LPCWSTR lpszPath, DWORD dwMode,
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DWORD dwAttributes, BOOL bCreate,
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IStream *lpTemplate, IStream **lppStream)
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{
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DWORD dwAccess, dwShare, dwCreate;
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HANDLE hFile;
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TRACE("(%s,%d,0x%08X,%d,%p,%p)\n", debugstr_w(lpszPath), dwMode,
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dwAttributes, bCreate, lpTemplate, lppStream);
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if (!lpszPath || !lppStream || lpTemplate)
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return E_INVALIDARG;
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*lppStream = NULL;
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/* Access */
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switch (STGM_ACCESS_MODE(dwMode))
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{
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case STGM_WRITE:
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case STGM_READWRITE:
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dwAccess = GENERIC_READ|GENERIC_WRITE;
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break;
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case STGM_READ:
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dwAccess = GENERIC_READ;
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break;
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default:
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return E_INVALIDARG;
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}
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/* Sharing */
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switch (STGM_SHARE_MODE(dwMode))
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{
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case 0:
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case STGM_SHARE_DENY_NONE:
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dwShare = FILE_SHARE_READ|FILE_SHARE_WRITE;
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break;
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case STGM_SHARE_DENY_READ:
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dwShare = FILE_SHARE_WRITE;
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break;
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case STGM_SHARE_DENY_WRITE:
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dwShare = FILE_SHARE_READ;
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break;
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case STGM_SHARE_EXCLUSIVE:
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dwShare = 0;
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break;
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default:
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return E_INVALIDARG;
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}
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switch(STGM_CREATE_MODE(dwMode))
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{
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case STGM_FAILIFTHERE:
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dwCreate = bCreate ? CREATE_NEW : OPEN_EXISTING;
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break;
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case STGM_CREATE:
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dwCreate = CREATE_ALWAYS;
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break;
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default:
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return E_INVALIDARG;
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}
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/* Open HANDLE to file */
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hFile = CreateFileW(lpszPath, dwAccess, dwShare, NULL, dwCreate,
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dwAttributes, 0);
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if(hFile == INVALID_HANDLE_VALUE)
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return HRESULT_FROM_WIN32(GetLastError());
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*lppStream = IStream_Create(lpszPath, hFile, dwMode);
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if(!*lppStream)
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{
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CloseHandle(hFile);
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return E_OUTOFMEMORY;
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}
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return S_OK;
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}
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/*************************************************************************
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* SHCreateStreamOnFileW [SHLWAPI.@]
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*
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* See SHCreateStreamOnFileA.
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*/
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HRESULT WINAPI SHCreateStreamOnFileW(LPCWSTR lpszPath, DWORD dwMode,
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IStream **lppStream)
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{
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TRACE("(%s,%d,%p)\n", debugstr_w(lpszPath), dwMode, lppStream);
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if (!lpszPath || !lppStream)
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return E_INVALIDARG;
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if ((dwMode & (STGM_CONVERT|STGM_DELETEONRELEASE|STGM_TRANSACTED)) != 0)
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return E_INVALIDARG;
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return SHCreateStreamOnFileEx(lpszPath, dwMode, 0, FALSE, NULL, lppStream);
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}
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/*************************************************************************
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* SHCreateStreamOnFileA [SHLWAPI.@]
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*
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* Create a stream on a file.
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*
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* PARAMS
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* lpszPath [I] Path of file to create stream on
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* dwMode [I] Mode to create stream in
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* lppStream [O] Destination for created 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 parameter is invalid, or an HRESULT error code
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*/
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HRESULT WINAPI SHCreateStreamOnFileA(LPCSTR lpszPath, DWORD dwMode,
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IStream **lppStream)
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{
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WCHAR szPath[MAX_PATH];
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TRACE("(%s,%d,%p)\n", debugstr_a(lpszPath), dwMode, lppStream);
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if (!lpszPath)
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return HRESULT_FROM_WIN32(ERROR_PATH_NOT_FOUND);
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MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, szPath, MAX_PATH);
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return SHCreateStreamOnFileW(szPath, dwMode, lppStream);
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}
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/*************************************************************************
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* @ [SHLWAPI.184]
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*
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* Call IStream_Read() on a stream.
|
|
*
|
|
* PARAMS
|
|
* lpStream [I] IStream object
|
|
* lpvDest [O] Destination for data read
|
|
* ulSize [I] Size of data to read
|
|
*
|
|
* RETURNS
|
|
* Success: S_OK. ulSize bytes have been read from the stream into lpvDest.
|
|
* Failure: An HRESULT error code, or E_FAIL if the read succeeded but the
|
|
* number of bytes read does not match.
|
|
*/
|
|
HRESULT WINAPI SHIStream_Read(IStream *lpStream, LPVOID lpvDest, ULONG ulSize)
|
|
{
|
|
ULONG ulRead;
|
|
HRESULT hRet;
|
|
|
|
TRACE("(%p,%p,%d)\n", lpStream, lpvDest, ulSize);
|
|
|
|
hRet = IStream_Read(lpStream, lpvDest, ulSize, &ulRead);
|
|
|
|
if (SUCCEEDED(hRet) && ulRead != ulSize)
|
|
hRet = E_FAIL;
|
|
return hRet;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* @ [SHLWAPI.166]
|
|
*
|
|
* Determine if a stream has 0 length.
|
|
*
|
|
* PARAMS
|
|
* lpStream [I] IStream object
|
|
*
|
|
* RETURNS
|
|
* TRUE: If the stream has 0 length
|
|
* FALSE: Otherwise.
|
|
*/
|
|
BOOL WINAPI SHIsEmptyStream(IStream *lpStream)
|
|
{
|
|
STATSTG statstg;
|
|
BOOL bRet = TRUE;
|
|
|
|
TRACE("(%p)\n", lpStream);
|
|
|
|
memset(&statstg, 0, sizeof(statstg));
|
|
|
|
if(SUCCEEDED(IStream_Stat(lpStream, &statstg, 1)))
|
|
{
|
|
if(statstg.cbSize.QuadPart)
|
|
bRet = FALSE; /* Non-Zero */
|
|
}
|
|
else
|
|
{
|
|
DWORD dwDummy;
|
|
|
|
/* Try to read from the stream */
|
|
if(SUCCEEDED(SHIStream_Read(lpStream, &dwDummy, sizeof(dwDummy))))
|
|
{
|
|
LARGE_INTEGER zero;
|
|
zero.QuadPart = 0;
|
|
|
|
IStream_Seek(lpStream, zero, 0, NULL);
|
|
bRet = FALSE; /* Non-Zero */
|
|
}
|
|
}
|
|
return bRet;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* @ [SHLWAPI.212]
|
|
*
|
|
* Call IStream_Write() on a stream.
|
|
*
|
|
* PARAMS
|
|
* lpStream [I] IStream object
|
|
* lpvSrc [I] Source for data to write
|
|
* ulSize [I] Size of data
|
|
*
|
|
* RETURNS
|
|
* Success: S_OK. ulSize bytes have been written to the stream from lpvSrc.
|
|
* Failure: An HRESULT error code, or E_FAIL if the write succeeded but the
|
|
* number of bytes written does not match.
|
|
*/
|
|
HRESULT WINAPI SHIStream_Write(IStream *lpStream, LPCVOID lpvSrc, ULONG ulSize)
|
|
{
|
|
ULONG ulWritten;
|
|
HRESULT hRet;
|
|
|
|
TRACE("(%p,%p,%d)\n", lpStream, lpvSrc, ulSize);
|
|
|
|
hRet = IStream_Write(lpStream, lpvSrc, ulSize, &ulWritten);
|
|
|
|
if (SUCCEEDED(hRet) && ulWritten != ulSize)
|
|
hRet = E_FAIL;
|
|
|
|
return hRet;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* @ [SHLWAPI.213]
|
|
*
|
|
* Seek to the start of a stream.
|
|
*
|
|
* PARAMS
|
|
* lpStream [I] IStream object
|
|
*
|
|
* RETURNS
|
|
* Success: S_OK. The current position within the stream is updated
|
|
* Failure: An HRESULT error code.
|
|
*/
|
|
HRESULT WINAPI IStream_Reset(IStream *lpStream)
|
|
{
|
|
LARGE_INTEGER zero;
|
|
TRACE("(%p)\n", lpStream);
|
|
zero.QuadPart = 0;
|
|
return IStream_Seek(lpStream, zero, 0, NULL);
|
|
}
|
|
|
|
/*************************************************************************
|
|
* @ [SHLWAPI.214]
|
|
*
|
|
* Get the size of a stream.
|
|
*
|
|
* PARAMS
|
|
* lpStream [I] IStream object
|
|
* lpulSize [O] Destination for size
|
|
*
|
|
* RETURNS
|
|
* Success: S_OK. lpulSize contains the size of the stream.
|
|
* Failure: An HRESULT error code.
|
|
*/
|
|
HRESULT WINAPI IStream_Size(IStream *lpStream, ULARGE_INTEGER* lpulSize)
|
|
{
|
|
STATSTG statstg;
|
|
HRESULT hRet;
|
|
|
|
TRACE("(%p,%p)\n", lpStream, lpulSize);
|
|
|
|
memset(&statstg, 0, sizeof(statstg));
|
|
|
|
hRet = IStream_Stat(lpStream, &statstg, 1);
|
|
|
|
if (SUCCEEDED(hRet) && lpulSize)
|
|
*lpulSize = statstg.cbSize;
|
|
return hRet;
|
|
}
|