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// The MIT License (MIT)
//
// Copyright (c) Itay Grudev 2015 - 2020
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// W A R N I N G !!!
// -----------------
//
// This file is not part of the SingleApplication API. It is used purely as an
// implementation detail. This header file may change from version to
// version without notice, or may even be removed.
//
#ifndef SINGLEAPPLICATION_P_H
#define SINGLEAPPLICATION_P_H
#include "singleapplication.h"
#include <QtCore/QSharedMemory>
#include <QtNetwork/QLocalServer>
#include <QtNetwork/QLocalSocket>
struct InstancesInfo
{
bool primary;
quint32 secondary;
qint64 primaryPid;
char primaryUser[128];
quint16 checksum; // Must be the last field
};
struct ConnectionInfo
{
qint64 msgLen = 0;
quint32 instanceId = 0;
quint8 stage = 0;
};
class SingleApplicationPrivate : public QObject
{
Q_OBJECT
public:
enum ConnectionType : quint8
{
InvalidConnection = 0,
NewInstance = 1,
SecondaryInstance = 2,
Reconnect = 3
};
enum ConnectionStage : quint8
{
StageHeader = 0,
StageBody = 1,
StageConnected = 2,
};
Q_DECLARE_PUBLIC(SingleApplication)
SingleApplicationPrivate(SingleApplication* q_ptr);
~SingleApplicationPrivate() override;
QString getUsername();
void genBlockServerName();
void initializeMemoryBlock();
void startPrimary();
void startSecondary();
bool connectToPrimary(int msecs, ConnectionType connectionType);
quint16 blockChecksum();
qint64 primaryPid();
QString primaryUser();
void readInitMessageHeader(QLocalSocket* socket);
void readInitMessageBody(QLocalSocket* socket);
void randomSleep();
SingleApplication* q_ptr;
QSharedMemory* memory;
QLocalSocket* socket;
QLocalServer* server;
quint32 instanceNumber;
QString blockServerName;
SingleApplication::Options options;
QMap<QLocalSocket*, ConnectionInfo> connectionMap;
public Q_SLOTS:
void slotConnectionEstablished();
void slotDataAvailable(QLocalSocket*, quint32);
void slotClientConnectionClosed(QLocalSocket*, quint32);
};
#endif // SINGLEAPPLICATION_P_H
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