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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de) *
// **************************************************************************
//
#include "recycler.h"
#include <stdexcept>
#include <iterator>
#include "i18n.h"
#include "string_conv.h"
#ifdef FFS_WIN
#include "dll_loader.h"
#include <wx/msw/wrapwin.h> //includes "windows.h"
#include "build_info.h"
#include "assert_static.h"
#include <algorithm>
#include <functional>
#include <vector>
#include "long_path_prefix.h"
#include "IFileOperation/file_op.h"
#elif defined FFS_LINUX
#include <sys/stat.h>
#include <giomm/file.h>
#endif
namespace
{
#ifdef FFS_WIN
const std::wstring& getRecyclerDllName()
{
static const std::wstring filename(
util::is64BitBuild ?
L"FileOperation_x64.dll":
L"FileOperation_Win32.dll");
assert_static(util::is32BitBuild || util::is64BitBuild);
return filename;
}
bool vistaOrLater()
{
OSVERSIONINFO osvi;
ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
//IFileOperation is supported with Vista and later
if (GetVersionEx(&osvi))
return osvi.dwMajorVersion > 5;
//XP has majorVersion == 5, minorVersion == 1
//Vista has majorVersion == 6, minorVersion == 0
//version overview: http://msdn.microsoft.com/en-us/library/ms724834(VS.85).aspx
return false;
}
/*
Performance test: delete 1000 files
------------------------------------
SHFileOperation - single file 33s
SHFileOperation - multiple files 2,1s
IFileOperation - single file 33s
IFileOperation - multiple files 2,1s
=> SHFileOperation and IFileOperation have nearly IDENTICAL performance characteristics!
Nevertheless, let's use IFileOperation for better error reporting!
*/
void moveToWindowsRecycler(const std::vector<Zstring>& filesToDelete) //throw (FileError)
{
using zen::FileError;
if (filesToDelete.empty())
return;
static const bool useIFileOperation = vistaOrLater();
if (useIFileOperation) //new recycle bin usage: available since Vista
{
std::vector<const wchar_t*> fileNames;
std::transform(filesToDelete.begin(), filesToDelete.end(),
std::back_inserter(fileNames), std::mem_fun_ref(&Zstring::c_str));
using namespace fileop;
static MoveToRecycleBinFct moveToRecycler = NULL;
if (!moveToRecycler)
moveToRecycler = util::getDllFun<MoveToRecycleBinFct>(getRecyclerDllName().c_str(), moveToRecycleBinFctName);
static GetLastErrorFct getLastError = NULL;
if (!getLastError)
getLastError = util::getDllFun<GetLastErrorFct>(getRecyclerDllName().c_str(), getLastErrorFctName);
if (moveToRecycler == NULL || getLastError == NULL)
throw FileError(wxString(_("Error moving to Recycle Bin:")) + wxT("\n\"") + fileNames[0] + wxT("\"") + //report first file only... better than nothing
wxT("\n\n") + wxString(_("Could not load a required DLL:")) + wxT(" \"") + getRecyclerDllName().c_str() + wxT("\""));
//#warning moving long file paths to recycler does not work! clarify!
// std::vector<Zstring> temp;
// std::transform(filesToDelete.begin(), filesToDelete.end(),
// std::back_inserter(temp), std::ptr_fun(zen::removeLongPathPrefix)); //::IFileOperation() can't handle \\?\-prefix!
if (!moveToRecycler(&fileNames[0], //array must not be empty
fileNames.size()))
{
wchar_t errorMessage[2000];
getLastError(errorMessage, 2000);
throw FileError(wxString(_("Error moving to Recycle Bin:")) + wxT("\n\"") + fileNames[0] + wxT("\"") + //report first file only... better than nothing
wxT("\n\n") + wxT("(") + errorMessage + wxT(")"));
}
}
else //regular recycle bin usage: available since XP
{
Zstring filenameDoubleNull;
for (std::vector<Zstring>::const_iterator i = filesToDelete.begin(); i != filesToDelete.end(); ++i)
{
//#warning moving long file paths to recycler does not work! clarify!
//filenameDoubleNull += removeLongPathPrefix(*i); //::SHFileOperation() can't handle \\?\-prefix!
//You should use fully-qualified path names with this function. Using it with relative path names is not thread safe.
filenameDoubleNull += *i; //::SHFileOperation() can't handle \\?\-prefix!
filenameDoubleNull += Zchar(0);
}
SHFILEOPSTRUCT fileOp = {};
fileOp.hwnd = NULL;
fileOp.wFunc = FO_DELETE;
fileOp.pFrom = filenameDoubleNull.c_str();
fileOp.pTo = NULL;
fileOp.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_SILENT | FOF_NOERRORUI;
fileOp.fAnyOperationsAborted = false;
fileOp.hNameMappings = NULL;
fileOp.lpszProgressTitle = NULL;
if (SHFileOperation(&fileOp) != 0 || fileOp.fAnyOperationsAborted)
{
throw FileError(wxString(_("Error moving to Recycle Bin:")) + wxT("\n\"") + filenameDoubleNull.c_str() + wxT("\"")); //report first file only... better than nothing
}
}
}
#endif
}
bool zen::moveToRecycleBin(const Zstring& fileToDelete) //throw (FileError)
{
#ifdef FFS_WIN
const Zstring filenameFmt = applyLongPathPrefix(fileToDelete);
const DWORD attr = ::GetFileAttributes(filenameFmt.c_str());
if (attr == INVALID_FILE_ATTRIBUTES)
return false; //neither file nor any other object with that name existing: no error situation, manual deletion relies on it!
//::SetFileAttributes(filenameFmt.c_str(), FILE_ATTRIBUTE_NORMAL);
//both SHFileOperation and useIFileOperation are not able to delete a folder named "System Volume Information" with normal attributes but shamelessly report success
std::vector<Zstring> fileNames;
fileNames.push_back(fileToDelete);
::moveToWindowsRecycler(fileNames); //throw (FileError)
#elif defined FFS_LINUX
struct stat fileInfo = {};
if (::lstat(fileToDelete.c_str(), &fileInfo) != 0)
return false; //neither file nor any other object with that name existing: no error situation, manual deletion relies on it!
Glib::RefPtr<Gio::File> fileObj = Gio::File::create_for_path(fileToDelete.c_str()); //never fails
try
{
if (!fileObj->trash())
throw FileError(wxString(_("Error moving to Recycle Bin:")) + wxT("\n\"") + zToWx(fileToDelete) + wxT("\"") +
wxT("\n\n") + wxT("(") + wxT("unknown error") + wxT(")"));
}
catch (const Glib::Error& errorObj)
{
//assemble error message
const wxString errorMessage = wxString(wxT("Glib Error Code ")) + wxString::Format(wxT("%i"), errorObj.code()) + wxT(", ") +
wxString::FromUTF8(g_quark_to_string(errorObj.domain())) + wxT(": ") + wxString::FromUTF8(errorObj.what().c_str());
throw FileError(wxString(_("Error moving to Recycle Bin:")) + wxT("\n\"") + zToWx(fileToDelete) + wxT("\"") +
wxT("\n\n") + wxT("(") + errorMessage + wxT(")"));
}
#endif
return true;
}
bool zen::recycleBinExists()
{
#ifdef FFS_WIN
return true;
#elif defined FFS_LINUX
return true;
#endif
}
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