mirror of
https://github.com/itay-grudev/SingleApplication.git
synced 2024-11-15 12:15:43 +08:00
87 lines
3.3 KiB
C++
87 lines
3.3 KiB
C++
// Copyright (c) Itay Grudev 2023
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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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// Permission is not granted to use this software or any of the associated files
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// as sample data for the purposes of building machine learning models.
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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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#include "singleapplicationmessage.h"
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#include <QIODevice>
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SingleApplicationMessage::SingleApplicationMessage()
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: invalid( true )
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{
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}
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SingleApplicationMessage::SingleApplicationMessage( MessageType type, quint16 instanceId, QByteArray content )
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: type( type ), instanceId( instanceId ), content( content ), invalid( false )
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{}
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SingleApplicationMessage::SingleApplicationMessage( QByteArray message )
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: invalid( false )
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{
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QDataStream dataStream( &message, QIODevice::ReadOnly );
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qsizetype messageLength;
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quint16 messageChecksum;
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dataStream >> type;
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dataStream >> instanceId;
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dataStream >> messageLength;
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if( (qsizetype)(message.size() - sizeof(type) - sizeof(messageLength) - sizeof(quint16)) < messageLength ){
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invalid = true;
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return;
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}
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content = QByteArray( messageLength, Qt::Uninitialized );
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dataStream.readRawData( content.data(), messageLength );
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dataStream >> messageChecksum;
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#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
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const quint16 computedChecksum = qChecksum( QByteArray(message.constData(), static_cast<quint32>( message.length() - sizeof(quint16) )));
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#else
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const quint16 computedChecksum = qChecksum( message.constData(), static_cast<quint32>( message.length() - sizeof(quint16) ));
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#endif
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if( messageChecksum != computedChecksum )
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invalid = true;
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}
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SingleApplicationMessage:: operator QByteArray()
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{
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QByteArray message;
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QDataStream dataStream( &message, QIODevice::WriteOnly );
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#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
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dataStream.setVersion(QDataStream::Qt_5_6);
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#endif
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dataStream << static_cast<quint8>( type );
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dataStream << instanceId;
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dataStream << (qsizetype)content.size();
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dataStream << content;
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#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
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quint16 checksum = qChecksum( QByteArray( message.constData(), static_cast<quint32>( message.length() )));
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#else
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quint16 checksum = qChecksum( message.constData(), static_cast<quint32>( messageMsg.length() ));
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#endif
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dataStream << checksum;
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return message;
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}
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