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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) 2008-2010 ZenJu (zhnmju123 AT gmx.de) *
// **************************************************************************
//
#include "fileOp.h"
#define WIN32_LEAN_AND_MEAN
#include "windows.h"
#include <Shellapi.h> // Included for shell constants such as FO_* values
#include <shobjidl.h> // Required for necessary shell dependencies
#include <algorithm>
#include <string>
#include <cstdio>
#include <comdef.h>
void writeString(const std::wstring& input, wchar_t* output, size_t outputBufferLen)
{
const size_t newSize = min(input.length() + 1, outputBufferLen); //including null-termination
memcpy(output, input.c_str(), newSize * sizeof(wchar_t));
output[newSize-1] = 0; //if output buffer is too small...
}
std::wstring numberToHexString(long number)
{
wchar_t result[100];
swprintf(result, 100, L"0x%08x", number);
return std::wstring(result);
}
std::wstring generateErrorMsg(const std::wstring& input, HRESULT hr)
{
std::wstring output(input);
output += L" (";
output += numberToHexString(hr);
output += L": ";
output += _com_error(hr).ErrorMessage();
output += L")";
return output;
}
//IShellItem resource management
template <class T>
class ReleaseAtExit
{
public:
ReleaseAtExit(T*& item) : item_(item) {}
~ReleaseAtExit()
{
if (item_ != NULL)
item_->Release();
}
private:
T*& item_;
};
namespace FileOp
{
std::wstring lastErrorMessage;
}
bool FileOp::moveToRecycleBin(const wchar_t* fileNames[],
size_t fileNo) //size of fileNames array
{
HRESULT hr;
// Create the IFileOperation interface
IFileOperation* pfo = NULL;
ReleaseAtExit<IFileOperation> dummy(pfo);
hr = CoCreateInstance(CLSID_FileOperation,
NULL,
CLSCTX_ALL,
IID_PPV_ARGS(&pfo));
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"CoCreateInstance\".", hr);
return false;
}
// Set the operation flags. Turn off all UI
// from being shown to the user during the
// operation. This includes error, confirmation
// and progress dialogs.
hr = pfo->SetOperationFlags(FOF_ALLOWUNDO |
FOF_NOCONFIRMATION |
FOF_SILENT |
FOF_NOERRORUI);
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"SetOperationFlags\".", hr);
return false;
}
for (size_t i = 0; i < fileNo; ++i)
{
//create file/folder item object
IShellItem* psiFile = NULL;
ReleaseAtExit<IShellItem> dummy2(psiFile);
hr = SHCreateItemFromParsingName(fileNames[i],
NULL,
IID_PPV_ARGS(&psiFile));
if (FAILED(hr))
{
std::wstring message(L"Error calling \"SHCreateItemFromParsingName\" for file:\n");
message += std::wstring(L"\"") + fileNames[i] + L"\".";
lastErrorMessage = generateErrorMsg(message, hr);
return false;
}
hr = pfo->DeleteItem(psiFile, NULL);
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"DeleteItem\".", hr);
return false;
}
}
//perform actual operations
hr = pfo->PerformOperations();
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"PerformOperations\".", hr);
return false;
}
//check if errors occured: if FOFX_EARLYFAILURE is not used, PerformOperations() can return with success despite errors!
BOOL pfAnyOperationsAborted = FALSE;
hr = pfo->GetAnyOperationsAborted(&pfAnyOperationsAborted);
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"GetAnyOperationsAborted\".", hr);
return false;
}
if (pfAnyOperationsAborted == TRUE)
{
lastErrorMessage = L"Operation did not complete successfully.";
return false;
}
return true;
}
bool FileOp::copyFile(const wchar_t* sourceFile,
const wchar_t* targetFile)
{
HRESULT hr;
// Create the IFileOperation interface
IFileOperation* pfo = NULL;
ReleaseAtExit<IFileOperation> dummy(pfo);
hr = CoCreateInstance(CLSID_FileOperation,
NULL,
CLSCTX_ALL,
IID_PPV_ARGS(&pfo));
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"CoCreateInstance\".", hr);
return false;
}
// Set the operation flags. Turn off all UI
// from being shown to the user during the
// operation. This includes error, confirmation
// and progress dialogs.
hr = pfo->SetOperationFlags(FOF_NOCONFIRMATION |
FOF_SILENT |
FOFX_EARLYFAILURE |
FOF_NOERRORUI);
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"SetOperationFlags\".", hr);
return false;
}
//create source object
IShellItem* psiSourceFile = NULL;
ReleaseAtExit<IShellItem> dummy2(psiSourceFile);
hr = SHCreateItemFromParsingName(sourceFile,
NULL,
IID_PPV_ARGS(&psiSourceFile));
if (FAILED(hr))
{
std::wstring message(L"Error calling \"SHCreateItemFromParsingName\" for file:\n");
message += std::wstring(L"\"") + sourceFile + L"\".";
lastErrorMessage = generateErrorMsg(message, hr);
return false;
}
const size_t pos = std::wstring(targetFile).find_last_of(L'\\');
if (pos == std::wstring::npos)
{
lastErrorMessage = L"Target filename does not contain a path separator.";
return false;
}
const std::wstring targetFolder(targetFile, pos);
const std::wstring targetFileNameShort = targetFile + pos + 1;
//create target folder object
IShellItem* psiTargetFolder = NULL;
ReleaseAtExit<IShellItem> dummy3(psiTargetFolder);
hr = SHCreateItemFromParsingName(targetFolder.c_str(),
NULL,
IID_PPV_ARGS(&psiTargetFolder));
if (FAILED(hr))
{
std::wstring message(L"Error calling \"SHCreateItemFromParsingName\" for folder:\n");
message += std::wstring(L"\"") + targetFolder + L"\".";
lastErrorMessage = generateErrorMsg(message, hr);
return false;
}
//schedule file copy operation
hr = pfo->CopyItem(psiSourceFile, psiTargetFolder, targetFileNameShort.c_str(), NULL);
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"CopyItem\".", hr);
return false;
}
//perform actual operations
hr = pfo->PerformOperations();
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"PerformOperations\".", hr);
return false;
}
//check if errors occured: if FOFX_EARLYFAILURE is not used, PerformOperations() can return with success despite errors!
BOOL pfAnyOperationsAborted = FALSE;
hr = pfo->GetAnyOperationsAborted(&pfAnyOperationsAborted);
if (FAILED(hr))
{
lastErrorMessage = generateErrorMsg(L"Error calling \"GetAnyOperationsAborted\".", hr);
return false;
}
if (pfAnyOperationsAborted == TRUE)
{
lastErrorMessage = L"Operation did not complete successfully.";
return false;
}
return true;
}
//if any of the functions above returns 'false', this message returns last error
void FileOp::getLastError(wchar_t* errorMessage, size_t errorBufferLen)
{
writeString(lastErrorMessage, errorMessage, errorBufferLen);
}
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