strawberry-audio-player-win.../3rdparty/singleapplication/singleapplication_p.h

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// The MIT License (MIT)
//
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// 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 is a modified version of SingleApplication,
// The original version is at:
//
// https://github.com/itay-grudev/SingleApplication
//
//
#ifndef SINGLEAPPLICATION_P_H
#define SINGLEAPPLICATION_P_H
#include <QtGlobal>
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#include <QObject>
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#include <QString>
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#include <QHash>
#include "singleapplication.h"
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class QLocalServer;
class QLocalSocket;
class QSharedMemory;
struct InstancesInfo {
bool primary;
quint32 secondary;
qint64 primaryPid;
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char primaryUser[128];
quint16 checksum;
};
struct ConnectionInfo {
explicit ConnectionInfo() : msgLen(0), instanceId(0), stage(0) {}
quint64 msgLen;
quint32 instanceId;
quint8 stage;
};
class SingleApplicationPrivate : public QObject {
Q_OBJECT
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public:
enum ConnectionType : quint8 {
InvalidConnection = 0,
NewInstance = 1,
SecondaryInstance = 2,
Reconnect = 3
};
enum ConnectionStage : quint8 {
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StageInitHeader = 0,
StageInitBody = 1,
StageConnectedHeader = 2,
StageConnectedBody = 3,
};
Q_DECLARE_PUBLIC(SingleApplication)
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explicit SingleApplicationPrivate(SingleApplication *ptr);
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~SingleApplicationPrivate() override;
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static QString getUsername();
void genBlockServerName();
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void initializeMemoryBlock() const;
void startPrimary();
void startSecondary();
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bool connectToPrimary(const int timeout, const ConnectionType connectionType);
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quint16 blockChecksum() const;
qint64 primaryPid() const;
QString primaryUser() const;
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bool isFrameComplete(QLocalSocket *sock);
void readMessageHeader(QLocalSocket *socket, const ConnectionStage nextStage);
void readInitMessageBody(QLocalSocket *socket);
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void writeAck(QLocalSocket *sock);
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bool writeConfirmedFrame(const int timeout, const QByteArray &msg) const;
bool writeConfirmedMessage(const int timeout, const QByteArray &msg) const;
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static void randomSleep();
SingleApplication *q_ptr;
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QSharedMemory *memory_;
QLocalSocket *socket_;
QLocalServer *server_;
quint32 instanceNumber_;
QString blockServerName_;
SingleApplication::Options options_;
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QHash<QLocalSocket*, ConnectionInfo> connectionMap_;
public slots:
void slotConnectionEstablished();
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void slotDataAvailable(QLocalSocket*, const quint32);
void slotClientConnectionClosed(QLocalSocket*, const quint32);
};
#endif // SINGLEAPPLICATION_P_H