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/**************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
**
** $QT_END_LICENSE$
**
**************************************************************************/
#ifndef REMOTECLIENT_P_H
#define REMOTECLIENT_P_H
#include "adminauthorization.h"
#include "messageboxhandler.h"
#include "protocol.h"
#include "remoteclient.h"
#include "utils.h"
#include <QCoreApplication>
#include <QElapsedTimer>
#include <QHostAddress>
#include <QMutex>
#include <QPointer>
#include <QTcpSocket>
#include <QThread>
#include <QTimer>
#include <QUuid>
namespace QInstaller {
class KeepAliveThread : public QThread
{
Q_OBJECT
Q_DISABLE_COPY(KeepAliveThread)
public:
KeepAliveThread(RemoteClient *client)
: m_timer(0)
, m_client(client)
{
}
void run() Q_DECL_OVERRIDE
{
m_timer = new QTimer(this);
connect(m_timer, SIGNAL(timeout()), this, SLOT(onTimeout()));
m_timer->start(1000);
exec(); // start the event loop to make the timer work
}
private slots:
void onTimeout()
{
m_timer->stop();
if (!m_client) {
quit();
wait();
return;
}
{
// Try to connect to the server. If we succeed the server side running watchdog gets
// restarted and the server keeps running for another 30 seconds.
QTcpSocket socket;
m_client->connect(&socket);
}
m_timer->start(1000);
}
private:
QTimer *m_timer;
QPointer<RemoteClient> m_client;
};
class RemoteClientPrivate
{
Q_DECLARE_PUBLIC(RemoteClient)
Q_DISABLE_COPY(RemoteClientPrivate)
public:
RemoteClientPrivate(RemoteClient *parent)
: q_ptr(parent)
, m_mutex(QMutex::Recursive)
, m_address(Protocol::DefaultHostAddress)
, m_port(Protocol::DefaultPort)
, m_startServerAs(Protocol::StartAs::User)
, m_serverStarted(false)
, m_serverStarting(false)
, m_active(false)
, m_key(QLatin1String(Protocol::DefaultAuthorizationKey))
, m_thread(new KeepAliveThread(parent))
, m_mode(Protocol::Mode::Debug)
, m_quit(false)
{
m_thread->moveToThread(m_thread);
}
~RemoteClientPrivate()
{
QMetaObject::invokeMethod(m_thread, "quit", Qt::QueuedConnection);
}
void init(quint16 port, const QHostAddress &address, Protocol::Mode mode)
{
m_port = port;
m_mode = mode;
m_address = address;
if (mode == Protocol::Mode::Debug) {
m_active = true;
m_serverStarted = true;
} else if (m_mode == Protocol::Mode::Release) {
m_key = QUuid::createUuid().toString();
m_thread->start();
} else {
Q_ASSERT_X(false, Q_FUNC_INFO, "RemoteClient mode not set properly.");
}
}
void maybeStartServer() {
if (m_serverStarted || m_serverCommand.isEmpty())
return;
const QMutexLocker ml(&m_mutex);
if (m_serverStarted)
return;
m_serverStarting = true;
if (m_startServerAs == Protocol::StartAs::SuperUser) {
m_serverStarted = AdminAuthorization::execute(0, m_serverCommand, m_serverArguments);
if (!m_serverStarted) {
// something went wrong with authorizing, either user pressed cancel or entered
// wrong password
const QString fallback = m_serverCommand + QLatin1String(" ") + m_serverArguments
.join(QLatin1String(" "));
const QMessageBox::Button res =
MessageBoxHandler::critical(MessageBoxHandler::currentBestSuitParent(),
RemoteClient::tr("Authorization Error"),
RemoteClient::tr("Could not get authorization."),
RemoteClient::tr("Could not get authorization that is needed for continuing "
"the installation.\n Either abort the installation or use the fallback "
"solution by running\n\n%1\n\nas root and then clicking OK.").arg(fallback),
QMessageBox::Abort | QMessageBox::Ok, QMessageBox::Ok);
if (res == QMessageBox::Ok)
m_serverStarted = true;
}
} else {
m_serverStarted = QInstaller::startDetached(m_serverCommand, m_serverArguments,
QCoreApplication::applicationDirPath());
}
if (m_serverStarted) {
QElapsedTimer t;
t.start();
// 30 seconds ought to be enough for the app to start
while (m_serverStarting && m_serverStarted && t.elapsed() < 30000) {
Q_Q(RemoteClient);
QTcpSocket socket;
if (q->connect(&socket))
m_serverStarting = false;
}
}
m_serverStarting = false;
}
void maybeStopServer()
{
if (!m_serverStarted)
return;
const QMutexLocker ml(&m_mutex);
if (!m_serverStarted)
return;
Q_Q(RemoteClient);
QTcpSocket socket;
if (q->connect(&socket)) {
QDataStream stream(&socket);
stream << QString::fromLatin1(Protocol::Authorize);
stream << m_key;
stream << QString::fromLatin1(Protocol::Shutdown);
socket.flush();
}
m_serverStarted = false;
}
private:
RemoteClient *q_ptr;
QMutex m_mutex;
QHostAddress m_address;
quint16 m_port;
QString m_socket;
Protocol::StartAs m_startServerAs;
bool m_serverStarted;
bool m_serverStarting;
bool m_active;
QString m_serverCommand;
QStringList m_serverArguments;
QString m_key;
QThread *m_thread;
Protocol::Mode m_mode;
volatile bool m_quit;
};
} // namespace QInstaller
#endif // REMOTECLIENT_P_H
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