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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of Qt for Device Creation.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "settingsmanager.h"
#include <QDebug>
#include <QDir>
#include <QFile>
#include <QTemporaryFile>
#include <sys/reboot.h>
#include <unistd.h>
const QString QdbdFileName(QStringLiteral("/etc/default/qdbd"));
const char *ProtocolSetting("USB_ETHERNET_PROTOCOL=");
SettingsManager::SettingsManager(QObject *parent) : QObject(parent) {}
bool SettingsManager::hasQdb()
{
return QFile::exists(QdbdFileName);
}
QString SettingsManager::usbMode()
{
static bool initialized = false;
if (!initialized) {
QFile file(QdbdFileName);
if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
QByteArray line;
while (!(line = file.readLine()).isEmpty()) {
if (line.startsWith(ProtocolSetting))
m_usbMode =
QString::fromLatin1(line.last(line.length() - strlen(ProtocolSetting)))
.trimmed();
}
} else {
qWarning() << "Failed to open file" << QdbdFileName;
}
initialized = true;
}
return m_usbMode;
}
void SettingsManager::setUsbMode(const QString &usbMode)
{
QFile file(QdbdFileName);
QTemporaryFile newFile(QdbdFileName);
newFile.setAutoRemove(false);
if (!newFile.open()) {
qWarning() << "Failed to save qdbd settings:" << newFile.errorString();
return;
}
if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
QTextStream out(&newFile);
QByteArray line;
while (!(line = file.readLine()).isEmpty()) {
if (line.startsWith(ProtocolSetting))
out << ProtocolSetting << usbMode.toLatin1() << '\n';
else
out << line;
}
file.remove();
if (!newFile.rename(QdbdFileName))
qWarning() << "Failed to save qdbd settings:" << newFile.errorString();
} else {
qWarning() << "Failed to save qdbd settings:" << file.errorString();
}
}
void SettingsManager::reboot()
{
sync();
::reboot(RB_AUTOBOOT);
qWarning("reboot failed");
}
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