113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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*
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* Copyright 2013 - 2021, nymea GmbH
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* Contact: contact@nymea.io
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*
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* This file is part of nymea.
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* This project including source code and documentation is protected by
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* copyright law, and remains the property of nymea GmbH. All rights, including
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* reproduction, publication, editing and translation, are reserved. The use of
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* this project is subject to the terms of a license agreement to be concluded
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* with nymea GmbH in accordance with the terms of use of nymea GmbH, available
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* under https://nymea.io/license
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*
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* GNU Lesser General Public License Usage
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* Alternatively, this project may be redistributed and/or modified under the
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* terms of the GNU Lesser General Public License as published by the Free
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* Software Foundation; version 3. This project is distributed in the hope that
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* it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this project. If not, see <https://www.gnu.org/licenses/>.
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*
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* For any further details and any questions please contact us under
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* contact@nymea.io or see our FAQ/Licensing Information on
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* https://nymea.io/license/faq
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*
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#ifndef PING_H
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#define PING_H
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#include <QUrl>
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#include <QQueue>
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#include <QTimer>
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#include <QObject>
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#include <QHostInfo>
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#include <QHostAddress>
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#include <QSocketNotifier>
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#include <QLoggingCategory>
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#include "libnymea.h"
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#include "pingreply.h"
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#include <netinet/ip_icmp.h>
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#define ICMP_PACKET_SIZE 64
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#define ICMP_TTL_VALUE 64
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#define ICMP_PAYLOAD_SIZE (ICMP_PACKET_SIZE - sizeof(struct icmphdr))
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class LIBNYMEA_EXPORT Ping : public QObject
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{
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Q_OBJECT
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public:
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explicit Ping(QObject *parent = nullptr);
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QByteArray payload() const;
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void setPayload(const QByteArray &payload);
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bool available() const;
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PingReply::Error error() const;
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PingReply *ping(const QHostAddress &hostAddress, uint retries = 3);
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PingReply *ping(const QHostAddress &hostAddress, bool lookupHost, uint retries = 3);
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signals:
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void availableChanged(bool available);
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private:
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struct icmpPacket {
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struct icmphdr icmpHeadr;
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char icmpPayload[ICMP_PAYLOAD_SIZE];
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};
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// Config
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QByteArray m_payload = "ping from nymea";
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PingReply::Error m_error = PingReply::ErrorNoError;
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uint m_timeoutDuration = 5000;
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// Socket
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QSocketNotifier *m_socketNotifier = nullptr;
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int m_socketDescriptor = -1;
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QHash<quint16, PingReply *> m_pendingReplies;
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bool m_available = false;
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QQueue<PingReply *> m_replyQueue;
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QTimer *m_queueTimer = nullptr;
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void sendNextReply();
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QHash<int, PingReply *> m_pendingHostLookups;
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//Error performPing(const QString &address);
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void performPing(PingReply *reply);
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void verifyErrno(int error);
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// Helper
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unsigned short calculateChecksum(unsigned short *b, int len);
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void cleanUpSocket();
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void timeValueSubtract(struct timeval *start, struct timeval *stop);
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quint16 calculateRequestId();
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PingReply *createReply(const QHostAddress &hostAddress);
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void finishReply(PingReply *reply, PingReply::Error error);
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private slots:
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void onSocketReadyRead(int socketDescriptor);
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void onHostLookupFinished(const QHostInfo &info);
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};
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#endif // PING_H
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