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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use the contact form at
** http://qt.digia.com/
**
** This file is part of Qt Enterprise Embedded.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** the contact form at http://qt.digia.com/
**
****************************************************************************/
#include <QCoreApplication>
#include <QProcess>
#include <QDebug>
#include <QFile>
#include <QDir>
#include <unistd.h>
#include <sys/reboot.h>
#include <QNetworkAccessManager>
#include <QUrl>
#include <QNetworkRequest>
#include <QNetworkReply>
#include "update.h"
#include "filewrapper.h"
#define UPDATE_MOUNTPOINT "/mnt/update"
QStringList mounts;
void cleanup()
{
foreach (const QString &m, mounts) {
QProcess::execute("umount", QStringList() << m);
}
mounts.clear();
}
void error(const QString &message)
{
fprintf(stderr, "%s\n", message.toLocal8Bit().constData());
cleanup();
exit(1);
}
bool execute(const QString &binary, const QStringList &arguments)
{
int rc = QProcess::execute(binary, arguments);
if (rc != 0)
error("Failed to execute command '" + binary + " " + arguments.join(" "));
return rc == 0;
}
bool mount(const QString &device, const QString &mountpoint, const QString &arguments = QString())
{
QStringList tmp;
if (!arguments.isEmpty())
tmp << "-o" << arguments;
if (!execute("mount", QStringList() << tmp << device << mountpoint))
return false;
if (!arguments.contains("remount"))
mounts << mountpoint;
return true;
}
QByteArray readAll(const QString &fileName)
{
QFile f(fileName);
if (!f.open(QFile::ReadOnly)) {
qWarning() << "Could not read" << fileName;
return QByteArray();
}
return f.readAll();
}
bool writeAll(const QString &fileName, const QByteArray &content)
{
QFile f(fileName);
if (!f.open(QFile::WriteOnly)) {
qWarning() << "Could not write" << fileName;
return false;
}
if (f.write(content) != content.size()) {
qWarning() << "write size mismatch";
return false;
}
f.close();
return true;
}
QStringList find_usb_storage()
{
QStringList rc;
QDir d("/sys/dev/block");
foreach (QString s, d.entryList()) {
QFileInfo fi(d.absoluteFilePath(s));
QString path = fi.canonicalFilePath();
if (path.contains("/usb"))
rc += path.mid(path.lastIndexOf('/'));
}
return rc;
}
int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
printf("Version %s, SHA1 %s\n", GIT_VERSION, GIT_HASH);
mount(QString(), "/", "remount,rw");
execute("mkdir", QStringList() << "-p" << "/mnt/boot");
execute("mkdir", QStringList() << "-p" << "/mnt/root");
execute("mkdir", QStringList() << "-p" << UPDATE_MOUNTPOINT);
mount("/dev/mmcblk0p1", "/mnt/boot", "ro");
QByteArray update_state = readAll("/mnt/boot/update/state").trimmed();
if (update_state.isEmpty())
qFatal("Update state is empty");
if (update_state == "v")
qFatal("Update state is 'valid', this should not happen");
else if (update_state == "t")
qDebug() << "Update state is 'testing', this should not happen";
else if (update_state == "u")
qDebug() << "Update state is 'update'";
else
qDebug() << "Unknown update state:" << update_state;
QStringList usbsticks = find_usb_storage();
qDebug() << "Found USB storage devices:" << usbsticks;
bool update_found = false;
foreach (QString s, usbsticks) {
if (QProcess::execute("mount", QStringList() << "-o" << "ro" << "/dev/" + s << UPDATE_MOUNTPOINT) == 0) {
mounts << UPDATE_MOUNTPOINT;
qDebug() << "mount successful";
if (QFile::exists(UPDATE_MOUNTPOINT "/b2qt-update")) {
qDebug() << "update found";
update_found = true;
break;
}
execute("umount", QStringList() << UPDATE_MOUNTPOINT);
mounts.removeAt(mounts.lastIndexOf(UPDATE_MOUNTPOINT));
qDebug() << "no update found";
} else {
qDebug() << "mount of" << s << "failed";
}
}
Update update;
if (update_found) {
FileWrapper *fw = new FileWrapper(UPDATE_MOUNTPOINT "/b2qt-update", &update);
if (!fw->open(QFile::ReadOnly))
qFatal("Failed to open update");
qDebug() << "Starting update from USB";
update.setDevice(fw);
} else {
QByteArray update_source = readAll("/mnt/boot/update/source").trimmed();
if (update_source.isEmpty()) {
execute("umount", QStringList() << "/mnt/boot"); // FIXME
mounts.removeAt(mounts.lastIndexOf("/mnt/boot"));
qFatal("Update source is empty");
}
execute("udhcpc", QStringList() << "-i" << "eth0");
QNetworkAccessManager *manager = new QNetworkAccessManager(0);
QNetworkReply *reply = manager->get(QNetworkRequest(QUrl(update_source)));
reply->setReadBufferSize(2000000); // 2 MB
QObject::connect(reply, (void (QNetworkReply::*)(QNetworkReply::NetworkError))&QNetworkReply::error,
[](QNetworkReply::NetworkError e){qDebug() << "network error" << e;});
QObject::connect(reply, &QNetworkReply::sslErrors,
[](QList<QSslError>){ qDebug() << "ssl errors";});
qDebug() << "Starting update from Internet" << update_source;
update.setDevice(reply);
}
app.exec();
qDebug() << "unmount";
cleanup();
qDebug() << "sync";
sync();
qDebug() << "reboot; waiting 2 seconds";
sleep(2);
reboot(RB_AUTOBOOT);
return 0;
}
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