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