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/****************************************************************************
**
** Copyright (C) 2019 Luxoft Sweden AB
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Luxoft Application Manager.
**
** $QT_BEGIN_LICENSE:LGPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite licenses may use
** this file in accordance with the commercial license agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and The Qt Company. For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
** SPDX-License-Identifier: LGPL-3.0
**
****************************************************************************/
#include "logging.h"
#include "packagemanager.h"
#include "packagemanager_p.h"
#include "installationreport.h"
#include "package.h"
#include "exception.h"
#include "scopeutilities.h"
#include "deinstallationtask.h"
QT_BEGIN_NAMESPACE_AM
DeinstallationTask::DeinstallationTask(Package *package, const QString &installationPath,
const QString &documentPath, bool forceDeinstallation,
bool keepDocuments, QObject *parent)
: AsynchronousTask(parent)
, m_package(package)
, m_installationPath(installationPath)
, m_documentPath(documentPath)
, m_forceDeinstallation(forceDeinstallation)
, m_keepDocuments(keepDocuments)
{
m_packageId = m_package->id(); // in base class
}
bool DeinstallationTask::cancel()
{
if (m_canBeCanceled)
m_canceled = true;
return m_canceled;
}
void DeinstallationTask::execute()
{
// these have been checked in PackageManager::removePackage() already
Q_ASSERT(m_package);
Q_ASSERT(m_package->info());
Q_ASSERT(m_package->info()->installationReport());
bool managerApproval = false;
try {
// we need to call those PackageManager methods in the correct thread
// this will also exclusively lock the package for us
QMetaObject::invokeMethod(PackageManager::instance(), [this, &managerApproval]()
{ managerApproval = PackageManager::instance()->startingPackageRemoval(m_package->id()); },
Qt::BlockingQueuedConnection);
if (!managerApproval)
throw Exception("PackageManager rejected the removal of package %1").arg(m_package->id());
// if any of the apps in the package were running before, we now need to wait until all of
// them have actually stopped
while (!m_canceled && !m_package->areAllApplicationsStoppedDueToBlock())
QThread::msleep(30);
// there's a small race condition here, but not doing a planned cancellation isn't harmful
m_canBeCanceled = false;
if (m_canceled)
throw Exception(Error::Canceled, "canceled");
ScopedRenamer docDirRename;
ScopedRenamer appDirRename;
if (!m_keepDocuments) {
if (!docDirRename.rename(QDir(m_documentPath).absoluteFilePath(m_package->id()),
ScopedRenamer::NameToNameMinus)) {
throw Exception(Error::IO, "could not rename %1 to %1-").arg(docDirRename.baseName());
}
}
if (!appDirRename.rename(QDir(m_installationPath).absoluteFilePath(m_package->id()),
ScopedRenamer::NameToNameMinus)) {
throw Exception(Error::IO, "could not rename %1 to %1-").arg(appDirRename.baseName());
}
docDirRename.take();
appDirRename.take();
// point of no return
for (ScopedRenamer *toDelete : { &docDirRename, &appDirRename }) {
if (toDelete->isRenamed()) {
if (!removeRecursiveHelper(toDelete->baseName() + qL1C('-')))
qCCritical(LogInstaller) << "ERROR: could not remove" << (toDelete->baseName() + qL1C('-'));
}
}
// we need to call those PackageManager methods in the correct thread
bool finishOk = false;
QMetaObject::invokeMethod(PackageManager::instance(), [this, &finishOk]()
{ finishOk = PackageManager::instance()->finishedPackageInstall(m_package->id()); },
Qt::BlockingQueuedConnection);
if (!finishOk)
qCWarning(LogInstaller) << "PackageManager did not approve deinstallation of " << m_packageId;
} catch (const Exception &e) {
// we need to call those ApplicationManager methods in the correct thread
if (managerApproval) {
bool cancelOk = false;
QMetaObject::invokeMethod(PackageManager::instance(), [this, &cancelOk]()
{ cancelOk = PackageManager::instance()->canceledPackageInstall(m_package->id()); },
Qt::BlockingQueuedConnection);
if (!cancelOk)
qCWarning(LogInstaller) << "PackageManager could not re-enable package" << m_packageId << "after a failed removal";
}
setError(e.errorCode(), e.errorString());
}
}
QT_END_NAMESPACE_AM
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