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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#ifndef SSHCHANNEL_P_H
#define SSHCHANNEL_P_H
#include <QByteArray>
#include <QObject>
#include <QString>
#include <QTimer>
namespace QSsh {
namespace Internal {
struct SshChannelExitSignal;
struct SshChannelExitStatus;
class SshIncomingPacket;
class SshSendFacility;
class AbstractSshChannel : public QObject
{
Q_OBJECT
public:
enum ChannelState {
Inactive, SessionRequested, SessionEstablished, CloseRequested, Closed
};
quint32 localChannelId() const { return m_localChannel; }
quint32 remoteChannel() const { return m_remoteChannel; }
virtual void handleChannelSuccess() = 0;
virtual void handleChannelFailure() = 0;
void handleOpenSuccess(quint32 remoteChannelId, quint32 remoteWindowSize,
quint32 remoteMaxPacketSize);
void handleOpenFailure(const QString &reason);
void handleWindowAdjust(quint32 bytesToAdd);
void handleChannelEof();
void handleChannelClose();
void handleChannelData(const QByteArray &data);
void handleChannelExtendedData(quint32 type, const QByteArray &data);
void handleChannelRequest(const SshIncomingPacket &packet);
void closeChannel();
virtual ~AbstractSshChannel();
static const int ReplyTimeout = 10000; // milli seconds
ChannelState channelState() const { return m_state; }
signals:
void timeout();
void eof();
protected:
AbstractSshChannel(quint32 channelId, SshSendFacility &sendFacility);
void setChannelState(ChannelState state);
void requestSessionStart();
void sendData(const QByteArray &data);
static quint32 initialWindowSize();
static quint32 maxPacketSize();
quint32 maxDataSize() const;
void checkChannelActive();
SshSendFacility &m_sendFacility;
QTimer m_timeoutTimer;
private:
virtual void handleOpenSuccessInternal() = 0;
virtual void handleOpenFailureInternal(const QString &reason) = 0;
virtual void handleChannelDataInternal(const QByteArray &data) = 0;
virtual void handleChannelExtendedDataInternal(quint32 type,
const QByteArray &data) = 0;
virtual void handleExitStatus(const SshChannelExitStatus &exitStatus) = 0;
virtual void handleExitSignal(const SshChannelExitSignal &signal) = 0;
virtual void closeHook() = 0;
void flushSendBuffer();
int handleChannelOrExtendedChannelData(const QByteArray &data);
const quint32 m_localChannel;
quint32 m_remoteChannel;
quint32 m_localWindowSize;
quint32 m_remoteWindowSize;
quint32 m_remoteMaxPacketSize;
ChannelState m_state;
QByteArray m_sendBuffer;
};
} // namespace Internal
} // namespace QSsh
#endif // SSHCHANNEL_P_H
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