autodecryptverifyfilescontroller.cpp
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autodecryptverifyfilescontroller.cpp
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	/* -- mode: c++; c-basic-offset:4 --
	autodecryptverifyfilescontroller.cpp

	This file is part of Kleopatra, the KDE keymanager
	SPDX-FileCopyrightText: 2008 Klarälvdalens Datakonsult AB

	SPDX-FileCopyrightText: 2016 Bundesamt für Sicherheit in der Informationstechnik
	SPDX-FileContributor: Intevation GmbH

	SPDX-License-Identifier: GPL-2.0-or-later
	*/

	#include <config-kleopatra.h>

	#include "autodecryptverifyfilescontroller.h"

	#include <settings.h>

	#include <crypto/decryptverifytask.h>
	#include <crypto/gui/decryptverifyfilesdialog.h>
	#include <crypto/gui/decryptverifyoperationwidget.h>
	#include <crypto/taskcollection.h>

	#include "commands/decryptverifyfilescommand.h"

	#include <utils/archivedefinition.h>
	#include <utils/input.h>
	#include <utils/kleo_assert.h>
	#include <utils/output.h>
	#include <utils/overwritedialog.h>
	#include <utils/path-helper.h>

	#include <Libkleo/Algorithm>
	#include <Libkleo/Classify>
	#include <Libkleo/GnuPG>

	#ifndef Q_OS_WIN
	#include <KIO/CopyJob>
	#include <KIO/Global>
	#endif
	#include "kleopatra_debug.h"
	#include <KLocalizedString>
	#include <KMessageBox>

	#include <QGpgME/DecryptVerifyArchiveJob>

	#include <QDir>
	#include <QFile>
	#include <QFileDialog>
	#include <QFileInfo>
	#include <QTemporaryDir>
	#include <QTimer>

	#include <gpgme++/decryptionresult.h>

	using namespace GpgME;
	using namespace Kleo;
	using namespace Kleo::Crypto;
	using namespace Kleo::Crypto::Gui;

	class AutoDecryptVerifyFilesController::Private
	{
	AutoDecryptVerifyFilesController *const q;

	public:
	explicit Private(AutoDecryptVerifyFilesController *qq);

	void schedule();

	QString getEmbeddedFileName(const QString &fileName) const;
	void exec();
	std::vector<std::shared_ptr<Task>> buildTasks(const QStringList &, QStringList &);

	struct CryptoFile {
	QString baseName;
	QString fileName;
	GpgME::Protocol protocol = GpgME::UnknownProtocol;
	int classification = 0;
	std::shared_ptr<Output> output;
	};
	QVector<CryptoFile> classifyAndSortFiles(const QStringList &files);

	void reportError(int err, const QString &details)
	{
	q->setLastError(err, details);
	q->emitDoneOrError();
	}
	void cancelAllTasks();
	void onDialogFinished(int result);

	QStringList m_passedFiles, m_filesAfterPreparation;
	std::vector<std::shared_ptr<const DecryptVerifyResult>> m_results;
	std::vector<std::shared_ptr<Task>> m_runnableTasks, m_completedTasks;
	std::shared_ptr<Task> m_runningTask;
	bool m_errorDetected = false;
	DecryptVerifyOperation m_operation = DecryptVerify;
	QPointer<DecryptVerifyFilesDialog> m_dialog;
	std::unique_ptr<QTemporaryDir> m_workDir;
	};

	AutoDecryptVerifyFilesController::Private::Private(AutoDecryptVerifyFilesController *qq)
	: q(qq)
	{
	qRegisterMetaType<VerificationResult>();
	}

	void AutoDecryptVerifyFilesController::Private::schedule()
	{
	if (!m_runningTask && !m_runnableTasks.empty()) {
	const std::shared_ptr<Task> t = m_runnableTasks.back();
	m_runnableTasks.pop_back();
	t->start();
	m_runningTask = t;
	}
	if (!m_runningTask) {
	kleo_assert(m_runnableTasks.empty());
	for (const std::shared_ptr<const DecryptVerifyResult> &i : std::as_const(m_results)) {
	Q_EMIT q->verificationResult(i->verificationResult());
	}
	}
	}

	QString AutoDecryptVerifyFilesController::Private::getEmbeddedFileName(const QString &fileName) const
	{
	auto it = std::find_if(m_results.cbegin(), m_results.cend(), [fileName](const auto &r) {
	return r->fileName() == fileName;
	});
	if (it != m_results.cend()) {
	const auto embeddedFilePath = QString::fromUtf8((*it)->decryptionResult().fileName());
	if (embeddedFilePath.contains(QLatin1Char{'\\'})) {
	// ignore embedded file names containing '\'
	return {};
	}
	// strip the path from the embedded file name
	return QFileInfo{embeddedFilePath}.fileName();
	} else {
	return {};
	}
	}

	void AutoDecryptVerifyFilesController::Private::exec()
	{
	Q_ASSERT(!m_dialog);

	QStringList undetected;
	std::vector<std::shared_ptr<Task>> tasks = buildTasks(m_passedFiles, undetected);

	if (!undetected.isEmpty()) {
	// Since GpgME 1.7.0 Classification is supposed to be reliable
	// so we really can't do anything with this data.
	reportError(makeGnuPGError(GPG_ERR_GENERAL),
	xi18n("Failed to find encrypted or signed data in one or more files.<nl/>"
	"You can manually select what to do with the files now.<nl/>"
	"If they contain signed or encrypted data please report a bug (see Help->Report Bug)."));
	auto cmd = new Commands::DecryptVerifyFilesCommand(undetected, nullptr, true);
	cmd->start();
	}
	if (tasks.empty()) {
	q->emitDoneOrError();
	return;
	}
	Q_ASSERT(m_runnableTasks.empty());
	m_runnableTasks.swap(tasks);

	std::shared_ptr<TaskCollection> coll(new TaskCollection);
	for (const std::shared_ptr<Task> &i : std::as_const(m_runnableTasks)) {
	q->connectTask(i);
	}
	coll->setTasks(m_runnableTasks);
	m_dialog = new DecryptVerifyFilesDialog(coll);
	m_dialog->setAttribute(Qt::WA_DeleteOnClose);
	m_dialog->setOutputLocation(heuristicBaseDirectory(m_passedFiles));
	q->bringToForeground(m_dialog);

	QTimer::singleShot(0, q, SLOT(schedule()));
	connect(m_dialog, &QDialog::finished, q, [this](auto result) {
	onDialogFinished(result);
	});
	}

	QVector<AutoDecryptVerifyFilesController::Private::CryptoFile> AutoDecryptVerifyFilesController::Private::classifyAndSortFiles(const QStringList &files)
	{
	const auto isSignature = [](int classification) -> bool {
	return mayBeDetachedSignature(classification) //
	\|\| mayBeOpaqueSignature(classification) //
	\|\| (classification & Class::TypeMask) == Class::ClearsignedMessage;
	};

	QVector<CryptoFile> out;
	for (const auto &file : files) {
	CryptoFile cFile;
	cFile.fileName = file;
	cFile.baseName = stripSuffix(file);
	cFile.classification = classify(file);
	cFile.protocol = findProtocol(cFile.classification);

	auto it = std::find_if(out.begin(), out.end(), [&cFile](const CryptoFile &other) {
	return other.protocol == cFile.protocol && other.baseName == cFile.baseName;
	});
	if (it != out.end()) {
	// If we found a file with the same basename, make sure that encrypted
	// file is before the signature file, so that we first decrypt and then
	// verify
	if (isSignature(cFile.classification) && isCipherText(it->classification)) {
	out.insert(it + 1, cFile);
	} else if (isCipherText(cFile.classification) && isSignature(it->classification)) {
	out.insert(it, cFile);
	} else {
	// both are signatures or both are encrypted files, in which
	// case order does not matter
	out.insert(it, cFile);
	}
	} else {
	out.push_back(cFile);
	}
	}

	return out;
	}

	static bool archiveJobsCanBeUsed([[maybe_unused]] GpgME::Protocol protocol)
	{
	return (protocol == GpgME::OpenPGP) && QGpgME::DecryptVerifyArchiveJob::isSupported();
	}

	std::vector<std::shared_ptr<Task>> AutoDecryptVerifyFilesController::Private::buildTasks(const QStringList &fileNames, QStringList &undetected)
	{
	// sort files so that we make sure we first decrypt and then verify
	QVector<CryptoFile> cryptoFiles = classifyAndSortFiles(fileNames);

	std::vector<std::shared_ptr<Task>> tasks;
	for (auto it = cryptoFiles.begin(), end = cryptoFiles.end(); it != end; ++it) {
	auto &cFile = (*it);
	QFileInfo fi(cFile.fileName);
	qCDebug(KLEOPATRA_LOG) << "classified" << cFile.fileName << "as" << printableClassification(cFile.classification);

	if (!fi.isReadable()) {
	reportError(makeGnuPGError(GPG_ERR_ASS_NO_INPUT), xi18n("Cannot open <filename>%1</filename> for reading.", cFile.fileName));
	continue;
	}

	if (mayBeAnyCertStoreType(cFile.classification)) {
	// Trying to verify a certificate. Possible because extensions are often similar
	// for PGP Keys.
	reportError(makeGnuPGError(GPG_ERR_ASS_NO_INPUT),
	xi18n("The file <filename>%1</filename> contains certificates and can't be decrypted or verified.", cFile.fileName));
	qCDebug(KLEOPATRA_LOG) << "reported error";
	continue;
	}

	// We can't reliably detect CMS detached signatures, so we will try to do
	// our best to use the current file as a detached signature and fallback to
	// opaque signature otherwise.
	if (cFile.protocol == GpgME::CMS && mayBeDetachedSignature(cFile.classification)) {
	// First, see if previous task was a decryption task for the same file
	// and "pipe" it's output into our input
	std::shared_ptr<Input> input;
	bool prepend = false;
	if (it != cryptoFiles.begin()) {
	const auto prev = it - 1;
	if (prev->protocol == cFile.protocol && prev->baseName == cFile.baseName) {
	input = Input::createFromOutput(prev->output);
	prepend = true;
	}
	}

	if (!input) {
	if (QFile::exists(cFile.baseName)) {
	input = Input::createFromFile(cFile.baseName);
	}
	}

	if (input) {
	qCDebug(KLEOPATRA_LOG) << "Detached CMS verify: " << cFile.fileName;
	std::shared_ptr<VerifyDetachedTask> t(new VerifyDetachedTask);
	t->setInput(Input::createFromFile(cFile.fileName));
	t->setSignedData(input);
	t->setProtocol(cFile.protocol);
	if (prepend) {
	// Put the verify task BEFORE the decrypt task in the tasks queue,
	// because the tasks are executed in reverse order!
	tasks.insert(tasks.end() - 1, t);
	} else {
	tasks.push_back(t);
	}
	continue;
	} else {
	// No signed data, maybe not a detached signature
	}
	}

	if (isDetachedSignature(cFile.classification)) {
	// Detached signature, try to find data or ask the user.
	QString signedDataFileName = cFile.baseName;
	if (!QFile::exists(signedDataFileName)) {
	signedDataFileName = QFileDialog::getOpenFileName(nullptr,
	xi18n("Select the file to verify with the signature <filename>%1</filename>", fi.fileName()),
	fi.path());
	}
	if (signedDataFileName.isEmpty()) {
	qCDebug(KLEOPATRA_LOG) << "No signed data selected. Verify aborted.";
	} else {
	qCDebug(KLEOPATRA_LOG) << "Detached verify: " << cFile.fileName << " Data: " << signedDataFileName;
	std::shared_ptr<VerifyDetachedTask> t(new VerifyDetachedTask);
	#if QGPGME_FILE_JOBS_SUPPORT_DIRECT_FILE_IO
	if (cFile.protocol == GpgME::OpenPGP) {
	t->setSignatureFile(cFile.fileName);
	t->setSignedFile(signedDataFileName);
	} else {
	t->setInput(Input::createFromFile(cFile.fileName));
	t->setSignedData(Input::createFromFile(signedDataFileName));
	}
	#else
	t->setInput(Input::createFromFile(cFile.fileName));
	t->setSignedData(Input::createFromFile(signedDataFileName));
	#endif
	t->setProtocol(cFile.protocol);
	tasks.push_back(t);
	}
	continue;
	}

	if (!mayBeAnyMessageType(cFile.classification)) {
	// Not a Message? Maybe there is a signature for this file?
	const auto signatures = findSignatures(cFile.fileName);
	bool foundSig = false;
	if (!signatures.empty()) {
	for (const QString &sig : signatures) {
	const auto classification = classify(sig);
	qCDebug(KLEOPATRA_LOG) << "Guessing: " << sig << " is a signature for: " << cFile.fileName << "Classification: " << classification;
	const auto proto = findProtocol(classification);
	if (proto == GpgME::UnknownProtocol) {
	qCDebug(KLEOPATRA_LOG) << "Could not determine protocol. Skipping guess.";
	continue;
	}
	foundSig = true;
	std::shared_ptr<VerifyDetachedTask> t(new VerifyDetachedTask);
	#if QGPGME_FILE_JOBS_SUPPORT_DIRECT_FILE_IO
	if (cFile.protocol == GpgME::OpenPGP) {
	t->setSignatureFile(sig);
	t->setSignedFile(cFile.fileName);
	} else {
	t->setInput(Input::createFromFile(sig));
	t->setSignedData(Input::createFromFile(cFile.fileName));
	}
	#else
	t->setInput(Input::createFromFile(sig));
	t->setSignedData(Input::createFromFile(cFile.fileName));
	#endif
	t->setProtocol(proto);
	tasks.push_back(t);
	}
	}
	if (!foundSig) {
	undetected << cFile.fileName;
	qCDebug(KLEOPATRA_LOG) << "Failed detection for: " << cFile.fileName << " adding to undetected.";
	}
	} else {
	const Settings settings;
	// Any Message type so we have input and output.
	std::shared_ptr<Input> input;
	#if QGPGME_FILE_JOBS_SUPPORT_DIRECT_FILE_IO
	if (cFile.protocol != GpgME::OpenPGP) {
	input = Input::createFromFile(cFile.fileName);
	}
	#else
	input = Input::createFromFile(cFile.fileName);
	#endif

	std::shared_ptr<ArchiveDefinition> ad;
	if (settings.autoExtractArchives()) {
	const auto archiveDefinitions = ArchiveDefinition::getArchiveDefinitions();
	ad = q->pick_archive_definition(cFile.protocol, archiveDefinitions, cFile.fileName);
	}

	if (settings.dontUseTmpDir()) {
	if (!m_workDir) {
	m_workDir = std::make_unique<QTemporaryDir>(heuristicBaseDirectory(fileNames) + QStringLiteral("/kleopatra-XXXXXX"));
	}
	if (!m_workDir->isValid()) {
	qCDebug(KLEOPATRA_LOG) << heuristicBaseDirectory(fileNames) << "not a valid temporary directory.";
	m_workDir.reset();
	}
	}
	if (!m_workDir) {
	m_workDir = std::make_unique<QTemporaryDir>();
	}
	qCDebug(KLEOPATRA_LOG) << "Using:" << m_workDir->path() << "as temporary directory.";

	const auto wd = QDir(m_workDir->path());

	std::shared_ptr<Output> output;
	QString outputFilePath;
	if (ad) {
	if ((ad->id() == QLatin1String{"tar"}) && archiveJobsCanBeUsed(cFile.protocol)) {
	// we don't need an output
	} else {
	output = ad->createOutputFromUnpackCommand(cFile.protocol, ad->stripExtension(cFile.protocol, cFile.baseName), wd);
	}
	} else {
	outputFilePath = wd.absoluteFilePath(outputFileName(fi.fileName()));
	#if QGPGME_FILE_JOBS_SUPPORT_DIRECT_FILE_IO
	if (cFile.protocol != GpgME::OpenPGP) {
	output = Output::createFromFile(outputFilePath, false);
	}
	#else
	output = Output::createFromFile(outputFilePath, false);
	#endif
	}

	// If this might be opaque CMS signature, then try that. We already handled
	// detached CMS signature above
	const auto isCMSOpaqueSignature = cFile.protocol == GpgME::CMS && mayBeOpaqueSignature(cFile.classification);

	if (isOpaqueSignature(cFile.classification) \|\| isCMSOpaqueSignature) {
	qCDebug(KLEOPATRA_LOG) << "creating a VerifyOpaqueTask";
	std::shared_ptr<VerifyOpaqueTask> t(new VerifyOpaqueTask);
	if (input) {
	t->setInput(input);
	}
	if (output) {
	t->setOutput(output);
	}
	t->setProtocol(cFile.protocol);
	if (ad) {
	t->setExtractArchive(true);
	t->setInputFile(cFile.fileName);
	if (output) {
	t->setOutputDirectory(m_workDir->path());
	} else {
	// make gpgtar extract to a subfolder of the work directory based on the input file name
	const auto baseFileName = QFileInfo{ad->stripExtension(cFile.protocol, cFile.baseName)}.fileName();
	t->setOutputDirectory(QDir{m_workDir->path()}.filePath(baseFileName));
	}
	#if QGPGME_FILE_JOBS_SUPPORT_DIRECT_FILE_IO
	} else if (cFile.protocol == GpgME::OpenPGP) {
	t->setInputFile(cFile.fileName);
	t->setOutputFile(outputFilePath);
	#endif
	}
	tasks.push_back(t);
	} else {
	// Any message. That is not an opaque signature needs to be
	// decrypted. Verify we always do because we can't know if
	// an encrypted message is also signed.
	qCDebug(KLEOPATRA_LOG) << "creating a DecryptVerifyTask";
	std::shared_ptr<DecryptVerifyTask> t(new DecryptVerifyTask);
	if (input) {
	t->setInput(input);
	}
	if (output) {
	t->setOutput(output);
	}
	t->setProtocol(cFile.protocol);
	if (ad) {
	t->setExtractArchive(true);
	t->setInputFile(cFile.fileName);
	if (output) {
	t->setOutputDirectory(m_workDir->path());
	} else {
	// make gpgtar extract to a subfolder of the work directory based on the input file name
	const auto baseFileName = QFileInfo{ad->stripExtension(cFile.protocol, cFile.baseName)}.fileName();
	t->setOutputDirectory(QDir{m_workDir->path()}.filePath(baseFileName));
	}
	#if QGPGME_FILE_JOBS_SUPPORT_DIRECT_FILE_IO
	} else if (cFile.protocol == GpgME::OpenPGP) {
	t->setInputFile(cFile.fileName);
	t->setOutputFile(outputFilePath);
	#endif
	}
	cFile.output = output;
	tasks.push_back(t);
	}
	}
	}

	return tasks;
	}

	void AutoDecryptVerifyFilesController::setFiles(const QStringList &files)
	{
	d->m_passedFiles = files;
	}

	AutoDecryptVerifyFilesController::AutoDecryptVerifyFilesController(QObject *parent)
	: DecryptVerifyFilesController(parent)
	, d(new Private(this))
	{
	}

	AutoDecryptVerifyFilesController::AutoDecryptVerifyFilesController(const std::shared_ptr<const ExecutionContext> &ctx, QObject *parent)
	: DecryptVerifyFilesController(ctx, parent)
	, d(new Private(this))
	{
	}

	AutoDecryptVerifyFilesController::~AutoDecryptVerifyFilesController()
	{
	qCDebug(KLEOPATRA_LOG);
	}

	void AutoDecryptVerifyFilesController::start()
	{
	d->exec();
	}

	void AutoDecryptVerifyFilesController::setOperation(DecryptVerifyOperation op)
	{
	d->m_operation = op;
	}

	DecryptVerifyOperation AutoDecryptVerifyFilesController::operation() const
	{
	return d->m_operation;
	}

	void AutoDecryptVerifyFilesController::Private::cancelAllTasks()
	{
	// we just kill all runnable tasks - this will not result in
	// signal emissions.
	m_runnableTasks.clear();

	// a cancel() will result in a call to
	if (m_runningTask) {
	m_runningTask->cancel();
	}
	}

	void AutoDecryptVerifyFilesController::cancel()
	{
	qCDebug(KLEOPATRA_LOG) << this << __func__;
	try {
	d->m_errorDetected = true;
	if (d->m_dialog) {
	d->m_dialog->close();
	}
	d->cancelAllTasks();
	} catch (const std::exception &e) {
	qCDebug(KLEOPATRA_LOG) << "Caught exception: " << e.what();
	}
	}

	void AutoDecryptVerifyFilesController::doTaskDone(const Task *task, const std::shared_ptr<const Task::Result> &result)
	{
	Q_ASSERT(task);
	Q_UNUSED(task)

	// We could just delete the tasks here, but we can't use
	// Qt::QueuedConnection here (we need sender()) and other slots
	// might not yet have executed. Therefore, we push completed tasks
	// into a burial container

	d->m_completedTasks.push_back(d->m_runningTask);
	d->m_runningTask.reset();

	if (const std::shared_ptr<const DecryptVerifyResult> &dvr = std::dynamic_pointer_cast<const DecryptVerifyResult>(result)) {
	d->m_results.push_back(dvr);
	}

	QTimer::singleShot(0, this, SLOT(schedule()));
	}

	void AutoDecryptVerifyFilesController::Private::onDialogFinished(int result)
	{
	if (result == QDialog::Rejected) {
	q->cancel();
	} else if (result == QDialog::Accepted && m_workDir) {
	// Without workdir there is nothing to move.
	const QDir workdir(m_workDir->path());
	const QDir outDir(m_dialog->outputLocation());
	qCDebug(KLEOPATRA_LOG) << workdir.entryList(QDir::Files \| QDir::Dirs \| QDir::NoDotAndDotDot);
	const auto filesAndFoldersToMove = workdir.entryInfoList(QDir::Files \| QDir::Dirs \| QDir::NoDotAndDotDot);
	const auto fileCount = Kleo::count_if(filesAndFoldersToMove, [](const auto &fi) {
	return !fi.isDir();
	});
	OverwritePolicy overwritePolicy{m_dialog, fileCount > 1 ? OverwritePolicy::MultipleFiles : OverwritePolicy::Options{}};
	for (const QFileInfo &fi : filesAndFoldersToMove) {
	const auto inpath = fi.absoluteFilePath();

	if (fi.isDir()) {
	// A directory. Assume that the input was an archive
	// and avoid directory merges by trying to find a non
	// existing directory.
	auto candidate = fi.fileName();
	if (candidate.startsWith(QLatin1Char('-'))) {
	// Bug in GpgTar Extracts stdout passed archives to a dir named -
	candidate = QFileInfo(m_passedFiles.first()).baseName();
	}

	QString suffix;
	QFileInfo ofi;
	int i = 0;
	do {
	ofi = QFileInfo(outDir.absoluteFilePath(candidate + suffix));
	if (!ofi.exists()) {
	break;
	}
	suffix = QStringLiteral("_%1").arg(++i);
	} while (i < 1000);

	const auto destPath = ofi.absoluteFilePath();
	#ifndef Q_OS_WIN
	auto job = KIO::moveAs(QUrl::fromLocalFile(inpath), QUrl::fromLocalFile(destPath));
	qCDebug(KLEOPATRA_LOG) << "Moving" << job->srcUrls().front().toLocalFile() << "to" << job->destUrl().toLocalFile();
	if (!job->exec()) {
	if (job->error() == KIO::ERR_USER_CANCELED) {
	break;
	}
	reportError(makeGnuPGError(GPG_ERR_GENERAL),
	xi18nc("@info",
	"<para>Failed to move <filename>%1</filename> to <filename>%2</filename>.</para>"
	"<para><message>%3</message></para>",
	inpath,
	destPath,
	job->errorString()));
	}
	#else
	// On Windows, KIO::move does not work for folders when crossing partition boundaries
	if (!moveDir(inpath, destPath)) {
	reportError(makeGnuPGError(GPG_ERR_GENERAL),
	xi18nc("@info", "<para>Failed to move <filename>%1</filename> to <filename>%2</filename>.</para>", inpath, destPath));
	}
	#endif
	continue;
	}

	const auto embeddedFileName = getEmbeddedFileName(inpath);
	QString outFileName = fi.fileName();
	if (!embeddedFileName.isEmpty() && embeddedFileName != fi.fileName()) {
	// we switch "Yes" and "No" because Yes is default, but saving with embedded file name could be dangerous
	const auto answer = KMessageBox::questionTwoActionsCancel(
	m_dialog,
	xi18n("Shall the file be saved with the original file name <filename>%1</filename>?", embeddedFileName),
	i18n("Use Original File Name?"),
	KGuiItem(xi18n("No, Save As <filename>%1</filename>", fi.fileName())),
	KGuiItem(xi18n("Yes, Save As <filename>%1</filename>", embeddedFileName)));
	if (answer == KMessageBox::Cancel) {
	qCDebug(KLEOPATRA_LOG) << "Saving canceled for:" << inpath;
	continue;
	} else if (answer == KMessageBox::ButtonCode::SecondaryAction) {
	outFileName = embeddedFileName;
	}
	}
	auto outpath = outDir.absoluteFilePath(outFileName);
	qCDebug(KLEOPATRA_LOG) << "Moving " << inpath << " to " << outpath;
	const QFileInfo ofi(outpath);
	if (ofi.exists()) {
	const auto policyAndPath = overwritePolicy.obtainOverwritePermission(outpath);
	if (policyAndPath.policy == OverwritePolicy::Cancel) {
	qCDebug(KLEOPATRA_LOG) << "Overwriting canceled for: " << outpath;
	break;
	}
	switch (policyAndPath.policy) {
	case OverwritePolicy::Skip:
	continue;
	case OverwritePolicy::Overwrite: {
	// overwrite existing file
	if (!QFile::remove(outpath)) {
	reportError(makeGnuPGError(GPG_ERR_GENERAL), xi18n("Failed to delete <filename>%1</filename>.", outpath));
	continue;
	}
	break;
	}
	case OverwritePolicy::Rename: {
	// use new name for file
	outpath = policyAndPath.fileName;
	break;
	}
	case OverwritePolicy::Cancel:
	// already handled outside of switch
	break;
	case OverwritePolicy::None:
	case OverwritePolicy::Ask:
	case OverwritePolicy::Append:
	qCDebug(KLEOPATRA_LOG) << "Unexpected OverwritePolicy result" << policyAndPath.policy << "for" << outpath;
	};
	}
	if (!QFile::rename(inpath, outpath)) {
	reportError(makeGnuPGError(GPG_ERR_GENERAL), xi18n("Failed to move <filename>%1</filename> to <filename>%2</filename>.", inpath, outpath));
	}
	}
	}
	q->emitDoneOrError();
	}

	#include "moc_autodecryptverifyfilescontroller.cpp"

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