reactos/lib/recyclebin/recyclebin_v5_enumerator.c
Timo Kreuzer 9ea495ba33 Create a branch for header work.
svn path=/branches/header-work/; revision=45691
2010-02-26 22:57:55 +00:00

487 lines
13 KiB
C

/*
* PROJECT: Recycle bin management
* LICENSE: GPL v2 - See COPYING in the top level directory
* FILE: lib/recyclebin/recyclebin_v5_enumerator.c
* PURPOSE: Enumerates contents of a MS Windows 2000/XP/2003 recyclebin
* PROGRAMMERS: Copyright 2006-2007 Hervé Poussineau (hpoussin@reactos.org)
*/
#define COBJMACROS
#include "recyclebin_v5.h"
WINE_DEFAULT_DEBUG_CHANNEL(recyclebin);
struct RecycleBin5File
{
ULONG ref;
IRecycleBin5 *recycleBin;
DELETED_FILE_RECORD deletedFile;
IRecycleBinFile recycleBinFileImpl;
WCHAR FullName[ANY_SIZE];
};
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_QueryInterface(
IN IRecycleBinFile *This,
IN REFIID riid,
OUT void **ppvObject)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppvObject);
if (!ppvObject)
return E_POINTER;
if (IsEqualIID(riid, &IID_IUnknown))
*ppvObject = &s->recycleBinFileImpl;
else if (IsEqualIID(riid, &IID_IRecycleBinFile))
*ppvObject = &s->recycleBinFileImpl;
else
{
*ppvObject = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef(This);
return S_OK;
}
static ULONG STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_AddRef(
IN IRecycleBinFile *This)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
ULONG refCount = InterlockedIncrement((PLONG)&s->ref);
TRACE("(%p)\n", This);
return refCount;
}
static VOID
RecycleBin5File_Destructor(
struct RecycleBin5File *s)
{
TRACE("(%p)\n", s);
IRecycleBin5_Release(s->recycleBin);
CoTaskMemFree(s);
}
static ULONG STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_Release(
IN IRecycleBinFile *This)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
ULONG refCount;
TRACE("(%p)\n", This);
refCount = InterlockedDecrement((PLONG)&s->ref);
if (refCount == 0)
RecycleBin5File_Destructor(s);
return refCount;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_GetLastModificationTime(
IN IRecycleBinFile *This,
OUT FILETIME *pLastModificationTime)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
HRESULT hr;
DWORD dwAttributes;
HANDLE hFile;
TRACE("(%p, %p)\n", This, pLastModificationTime);
dwAttributes = GetFileAttributesW(s->FullName);
if (dwAttributes == INVALID_FILE_ATTRIBUTES)
return HRESULT_FROM_WIN32(GetLastError());
if (dwAttributes & FILE_ATTRIBUTE_DIRECTORY)
hFile = CreateFileW(s->FullName, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
else
hFile = CreateFileW(s->FullName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (hFile == INVALID_HANDLE_VALUE)
return HRESULT_FROM_WIN32(GetLastError());
if (GetFileTime(hFile, NULL, NULL, pLastModificationTime))
hr = S_OK;
else
hr = HRESULT_FROM_WIN32(GetLastError());
CloseHandle(hFile);
return hr;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_GetDeletionTime(
IN IRecycleBinFile *This,
OUT FILETIME *pDeletionTime)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
TRACE("(%p, %p)\n", This, pDeletionTime);
*pDeletionTime = s->deletedFile.DeletionTime;
return S_OK;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_GetFileSize(
IN IRecycleBinFile *This,
OUT ULARGE_INTEGER *pFileSize)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
HRESULT hr;
DWORD dwAttributes;
HANDLE hFile;
TRACE("(%p, %p)\n", This, pFileSize);
dwAttributes = GetFileAttributesW(s->FullName);
if (dwAttributes == INVALID_FILE_ATTRIBUTES)
return HRESULT_FROM_WIN32(GetLastError());
if (dwAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
pFileSize->QuadPart = 0;
return S_OK;
}
hFile = CreateFileW(s->FullName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (hFile == INVALID_HANDLE_VALUE)
return HRESULT_FROM_WIN32(GetLastError());
pFileSize->u.LowPart = GetFileSize(hFile, &pFileSize->u.HighPart);
if (pFileSize->u.LowPart != INVALID_FILE_SIZE)
hr = S_OK;
else
hr = HRESULT_FROM_WIN32(GetLastError());
CloseHandle(hFile);
return hr;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_GetPhysicalFileSize(
IN IRecycleBinFile *This,
OUT ULARGE_INTEGER *pPhysicalFileSize)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
TRACE("(%p, %p)\n", This, pPhysicalFileSize);
pPhysicalFileSize->u.HighPart = 0;
pPhysicalFileSize->u.LowPart = s->deletedFile.dwPhysicalFileSize;
return S_OK;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_GetAttributes(
IN IRecycleBinFile *This,
OUT DWORD *pAttributes)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
DWORD dwAttributes;
TRACE("(%p, %p)\n", This, pAttributes);
dwAttributes = GetFileAttributesW(s->FullName);
if (dwAttributes == INVALID_FILE_ATTRIBUTES)
return HRESULT_FROM_WIN32(GetLastError());
*pAttributes = dwAttributes;
return S_OK;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_GetFileName(
IN IRecycleBinFile *This,
IN SIZE_T BufferSize,
IN OUT LPWSTR Buffer,
OUT SIZE_T *RequiredSize)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
DWORD dwRequired;
TRACE("(%p, %u, %p, %p)\n", This, BufferSize, Buffer, RequiredSize);
dwRequired = (DWORD)(wcslen(s->deletedFile.FileNameW) + 1) * sizeof(WCHAR);
if (RequiredSize)
*RequiredSize = dwRequired;
if (BufferSize == 0 && !Buffer)
return S_OK;
if (BufferSize < dwRequired)
return E_OUTOFMEMORY;
CopyMemory(Buffer, s->deletedFile.FileNameW, dwRequired);
return S_OK;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_Delete(
IN IRecycleBinFile *This)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
TRACE("(%p)\n", This);
return IRecycleBin5_Delete(s->recycleBin, s->FullName, &s->deletedFile);
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5File_RecycleBinFile_Restore(
IN IRecycleBinFile *This)
{
struct RecycleBin5File *s = CONTAINING_RECORD(This, struct RecycleBin5File, recycleBinFileImpl);
TRACE("(%p)\n", This);
return IRecycleBin5_Restore(s->recycleBin, s->FullName, &s->deletedFile);
}
CONST_VTBL struct IRecycleBinFileVtbl RecycleBin5FileVtbl =
{
RecycleBin5File_RecycleBinFile_QueryInterface,
RecycleBin5File_RecycleBinFile_AddRef,
RecycleBin5File_RecycleBinFile_Release,
RecycleBin5File_RecycleBinFile_GetLastModificationTime,
RecycleBin5File_RecycleBinFile_GetDeletionTime,
RecycleBin5File_RecycleBinFile_GetFileSize,
RecycleBin5File_RecycleBinFile_GetPhysicalFileSize,
RecycleBin5File_RecycleBinFile_GetAttributes,
RecycleBin5File_RecycleBinFile_GetFileName,
RecycleBin5File_RecycleBinFile_Delete,
RecycleBin5File_RecycleBinFile_Restore,
};
static HRESULT
RecycleBin5File_Constructor(
IN IRecycleBin5 *prb,
IN LPCWSTR Folder,
IN PDELETED_FILE_RECORD pDeletedFile,
OUT IRecycleBinFile **ppFile)
{
struct RecycleBin5File *s = NULL;
LPCWSTR Extension;
SIZE_T Needed;
if (!ppFile)
return E_POINTER;
Extension = wcsrchr(pDeletedFile->FileNameW, '.');
if (Extension < wcsrchr(pDeletedFile->FileNameW, '\\'))
Extension = NULL;
Needed = wcslen(Folder) + 13;
if (Extension)
Needed += wcslen(Extension);
Needed *= sizeof(WCHAR);
s = CoTaskMemAlloc(sizeof(struct RecycleBin5File) + Needed);
if (!s)
return E_OUTOFMEMORY;
ZeroMemory(s, sizeof(struct RecycleBin5File) + Needed);
s->recycleBinFileImpl.lpVtbl = &RecycleBin5FileVtbl;
s->ref = 1;
s->deletedFile = *pDeletedFile;
s->recycleBin = prb;
IRecycleBin5_AddRef(s->recycleBin);
*ppFile = &s->recycleBinFileImpl;
wsprintfW(s->FullName, L"%s\\D%c%lu%s", Folder, pDeletedFile->dwDriveNumber + 'a', pDeletedFile->dwRecordUniqueId, Extension);
if (GetFileAttributesW(s->FullName) == INVALID_FILE_ATTRIBUTES)
{
RecycleBin5File_Destructor(s);
return E_FAIL;
}
return S_OK;
}
struct RecycleBin5Enum
{
ULONG ref;
IRecycleBin5 *recycleBin;
HANDLE hInfo;
INFO2_HEADER *pInfo;
DWORD dwCurrent;
IRecycleBinEnumList recycleBinEnumImpl;
WCHAR szPrefix[ANY_SIZE];
};
static HRESULT STDMETHODCALLTYPE
RecycleBin5Enum_RecycleBinEnumList_QueryInterface(
IN IRecycleBinEnumList *This,
IN REFIID riid,
OUT void **ppvObject)
{
struct RecycleBin5Enum *s = CONTAINING_RECORD(This, struct RecycleBin5Enum, recycleBinEnumImpl);
TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppvObject);
if (!ppvObject)
return E_POINTER;
if (IsEqualIID(riid, &IID_IUnknown))
*ppvObject = &s->recycleBinEnumImpl;
else if (IsEqualIID(riid, &IID_IRecycleBinEnumList))
*ppvObject = &s->recycleBinEnumImpl;
else
{
*ppvObject = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef(This);
return S_OK;
}
static ULONG STDMETHODCALLTYPE
RecycleBin5Enum_RecycleBinEnumList_AddRef(
IN IRecycleBinEnumList *This)
{
struct RecycleBin5Enum *s = CONTAINING_RECORD(This, struct RecycleBin5Enum, recycleBinEnumImpl);
ULONG refCount = InterlockedIncrement((PLONG)&s->ref);
TRACE("(%p)\n", This);
return refCount;
}
static VOID
RecycleBin5Enum_Destructor(
struct RecycleBin5Enum *s)
{
TRACE("(%p)\n", s);
IRecycleBin5_OnClosing(s->recycleBin, &s->recycleBinEnumImpl);
UnmapViewOfFile(s->pInfo);
IRecycleBin5_Release(s->recycleBin);
CoTaskMemFree(s);
}
static ULONG STDMETHODCALLTYPE
RecycleBin5Enum_RecycleBinEnumList_Release(
IN IRecycleBinEnumList *This)
{
struct RecycleBin5Enum *s = CONTAINING_RECORD(This, struct RecycleBin5Enum, recycleBinEnumImpl);
ULONG refCount;
TRACE("(%p)\n", This);
refCount = InterlockedDecrement((PLONG)&s->ref);
if (refCount == 0)
RecycleBin5Enum_Destructor(s);
return refCount;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5Enum_RecycleBinEnumList_Next(
IRecycleBinEnumList *This,
IN DWORD celt,
IN OUT IRecycleBinFile **rgelt,
OUT DWORD *pceltFetched)
{
struct RecycleBin5Enum *s = CONTAINING_RECORD(This, struct RecycleBin5Enum, recycleBinEnumImpl);
ULARGE_INTEGER FileSize;
INFO2_HEADER *pHeader = s->pInfo;
DELETED_FILE_RECORD *pDeletedFile;
DWORD fetched = 0, i;
DWORD dwEntries;
HRESULT hr;
TRACE("(%p, %u, %p, %p)\n", This, celt, rgelt, pceltFetched);
if (!rgelt)
return E_POINTER;
if (!pceltFetched && celt > 1)
return E_INVALIDARG;
FileSize.u.LowPart = GetFileSize(s->hInfo, &FileSize.u.HighPart);
if (FileSize.u.LowPart == 0)
return HRESULT_FROM_WIN32(GetLastError());
dwEntries = (DWORD)((FileSize.QuadPart - sizeof(INFO2_HEADER)) / sizeof(DELETED_FILE_RECORD));
i = s->dwCurrent;
pDeletedFile = (DELETED_FILE_RECORD *)(pHeader + 1) + i;
for (; i < dwEntries && fetched < celt; i++)
{
hr = RecycleBin5File_Constructor(s->recycleBin, s->szPrefix, pDeletedFile, &rgelt[fetched]);
if (SUCCEEDED(hr))
fetched++;
pDeletedFile++;
}
s->dwCurrent = i;
if (pceltFetched)
*pceltFetched = fetched;
if (fetched == celt)
return S_OK;
else
return S_FALSE;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5Enum_RecycleBinEnumList_Skip(
IN IRecycleBinEnumList *This,
IN DWORD celt)
{
struct RecycleBin5Enum *s = CONTAINING_RECORD(This, struct RecycleBin5Enum, recycleBinEnumImpl);
TRACE("(%p, %u)\n", This, celt);
s->dwCurrent += celt;
return S_OK;
}
static HRESULT STDMETHODCALLTYPE
RecycleBin5Enum_RecycleBinEnumList_Reset(
IN IRecycleBinEnumList *This)
{
struct RecycleBin5Enum *s = CONTAINING_RECORD(This, struct RecycleBin5Enum, recycleBinEnumImpl);
TRACE("(%p)\n", This);
s->dwCurrent = 0;
return S_OK;
}
CONST_VTBL struct IRecycleBinEnumListVtbl RecycleBin5EnumVtbl =
{
RecycleBin5Enum_RecycleBinEnumList_QueryInterface,
RecycleBin5Enum_RecycleBinEnumList_AddRef,
RecycleBin5Enum_RecycleBinEnumList_Release,
RecycleBin5Enum_RecycleBinEnumList_Next,
RecycleBin5Enum_RecycleBinEnumList_Skip,
RecycleBin5Enum_RecycleBinEnumList_Reset,
};
HRESULT
RecycleBin5Enum_Constructor(
IN IRecycleBin5 *prb,
IN HANDLE hInfo,
IN HANDLE hInfoMapped,
IN LPCWSTR szPrefix,
OUT IUnknown **ppUnknown)
{
struct RecycleBin5Enum *s = NULL;
SIZE_T Needed;
if (!ppUnknown)
return E_POINTER;
Needed = (wcslen(szPrefix) + 1) * sizeof(WCHAR);
s = CoTaskMemAlloc(sizeof(struct RecycleBin5Enum) + Needed);
if (!s)
return E_OUTOFMEMORY;
ZeroMemory(s, sizeof(struct RecycleBin5Enum) + Needed);
s->recycleBinEnumImpl.lpVtbl = &RecycleBin5EnumVtbl;
s->ref = 1;
s->recycleBin = prb;
wcscpy(s->szPrefix, szPrefix);
s->hInfo = hInfo;
s->pInfo = MapViewOfFile(hInfoMapped, FILE_MAP_READ, 0, 0, 0);
if (!s->pInfo)
{
CoTaskMemFree(s);
return HRESULT_FROM_WIN32(GetLastError());
}
if (s->pInfo->dwVersion != 5 || s->pInfo->dwRecordSize != sizeof(DELETED_FILE_RECORD))
{
UnmapViewOfFile(s->pInfo);
CoTaskMemFree(s);
return E_FAIL;
}
IRecycleBin5_AddRef(s->recycleBin);
*ppUnknown = (IUnknown *)&s->recycleBinEnumImpl;
return S_OK;
}