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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "bluetoothlistener.h"
#include "trkdevice.h"
#include <QtCore/QDebug>
#ifdef Q_OS_UNIX
# include <unistd.h>
# include <signal.h>
#else
# include <windows.h>
#endif
// Process id helpers.
#ifdef Q_OS_WIN
inline DWORD processId(const QProcess &p)
{
if (const Q_PID processInfoStruct = p.pid())
return processInfoStruct->dwProcessId;
return 0;
}
#else
inline Q_PID processId(const QProcess &p)
{
return p.pid();
}
#endif
enum { debug = 0 };
namespace trk {
struct BluetoothListenerPrivate {
BluetoothListenerPrivate();
QString device;
QProcess process;
#ifdef Q_OS_WIN
DWORD pid;
#else
Q_PID pid;
#endif
bool printConsoleMessages;
BluetoothListener::Mode mode;
};
BluetoothListenerPrivate::BluetoothListenerPrivate() :
pid(0),
printConsoleMessages(false),
mode(BluetoothListener::Listen)
{
}
BluetoothListener::BluetoothListener(QObject *parent) :
QObject(parent),
d(new BluetoothListenerPrivate)
{
d->process.setProcessChannelMode(QProcess::MergedChannels);
connect(&d->process, SIGNAL(readyReadStandardError()),
this, SLOT(slotStdError()));
connect(&d->process, SIGNAL(readyReadStandardOutput()),
this, SLOT(slotStdOutput()));
connect(&d->process, SIGNAL(finished(int, QProcess::ExitStatus)),
this, SLOT(slotProcessFinished(int,QProcess::ExitStatus)));
connect(&d->process, SIGNAL(error(QProcess::ProcessError)),
this, SLOT(slotProcessError(QProcess::ProcessError)));
}
BluetoothListener::~BluetoothListener()
{
const int trc = terminateProcess();
if (debug)
qDebug() << "~BluetoothListener: terminated" << trc;
delete d;
}
BluetoothListener::Mode BluetoothListener::mode() const
{
return d->mode;
}
void BluetoothListener::setMode(Mode m)
{
d->mode = m;
}
bool BluetoothListener::printConsoleMessages() const
{
return d->printConsoleMessages;
}
void BluetoothListener::setPrintConsoleMessages(bool p)
{
d->printConsoleMessages = p;
}
int BluetoothListener::terminateProcess()
{
enum { TimeOutMS = 200 };
if (debug)
qDebug() << "terminateProcess" << d->process.pid() << d->process.state();
if (d->process.state() == QProcess::NotRunning)
return -1;
emitMessage(tr("%1: Stopping listener %2...").arg(d->device).arg(processId(d->process)));
// When listening, the process should terminate by itself after closing the connection
if (mode() == Listen && d->process.waitForFinished(TimeOutMS))
return 0;
#ifdef Q_OS_UNIX
kill(d->process.pid(), SIGHUP); // Listens for SIGHUP
if (d->process.waitForFinished(TimeOutMS))
return 1;
#endif
d->process.terminate();
if (d->process.waitForFinished(TimeOutMS))
return 2;
d->process.kill();
return 3;
}
bool BluetoothListener::start(const QString &device, QString *errorMessage)
{
if (d->process.state() != QProcess::NotRunning) {
*errorMessage = QLatin1String("Internal error: Still running.");
return false;
}
d->device = device;
const QString binary = QLatin1String("rfcomm");
QStringList arguments;
arguments << QLatin1String("-r")
<< (d->mode == Listen ? QLatin1String("listen") : QLatin1String("watch"))
<< device << QString(QLatin1Char('1'));
if (debug)
qDebug() << binary << arguments;
emitMessage(tr("%1: Starting Bluetooth listener %2...").arg(device, binary));
d->pid = 0;
d->process.start(binary, arguments);
if (!d->process.waitForStarted()) {
*errorMessage = tr("Unable to run '%1': %2").arg(binary, d->process.errorString());
return false;
}
d->pid = processId(d->process); // Forgets it after crash/termination
emitMessage(tr("%1: Bluetooth listener running (%2).").arg(device).arg(processId(d->process)));
return true;
}
void BluetoothListener::slotStdOutput()
{
emitMessage(QString::fromLocal8Bit(d->process.readAllStandardOutput()));
}
void BluetoothListener::emitMessage(const QString &m)
{
if (d->printConsoleMessages || debug)
qDebug("%s\n", qPrintable(m));
emit message(m);
}
void BluetoothListener::slotStdError()
{
emitMessage(QString::fromLocal8Bit(d->process.readAllStandardError()));
}
void BluetoothListener::slotProcessFinished(int ex, QProcess::ExitStatus state)
{
switch (state) {
case QProcess::NormalExit:
emitMessage(tr("%1: Process %2 terminated with exit code %3.")
.arg(d->device).arg(d->pid).arg(ex));
break;
case QProcess::CrashExit:
emitMessage(tr("%1: Process %2 crashed.").arg(d->device).arg(d->pid));
break;
}
emit terminated();
}
void BluetoothListener::slotProcessError(QProcess::ProcessError error)
{
emitMessage(tr("%1: Process error %2: %3")
.arg(d->device).arg(error).arg(d->process.errorString()));
}
} // namespace trk
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