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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtAddOn.JsonStream module of the Qt.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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 <QCoreApplication>
#include <QSocketNotifier>
#include <QTimer>
#include <QDebug>
#include <QtEndian>
#include <QJsonDocument>
#include <QJsonObject>
#include "qprocessinfo.h"
#include <signal.h>
#include <stdio.h>
#include <pthread.h>
#if defined(Q_OS_LINUX)
#include <sys/types.h>
#include <unistd.h>
#include <grp.h>
#endif
#include <pwd.h>
QT_USE_NAMESPACE_PROCESSMANAGER
class Container : public QObject
{
Q_OBJECT
public:
Container() : count(0) {
m_in = new QSocketNotifier( STDIN_FILENO, QSocketNotifier::Read, this );
connect(m_in, SIGNAL(activated(int)), SLOT(inReady(int)));
m_in->setEnabled(true);
m_out = new QSocketNotifier( STDOUT_FILENO, QSocketNotifier::Write, this );
connect(m_out, SIGNAL(activated(int)), SLOT(outReady(int)));
m_out->setEnabled(false);
}
void handleMessage(const QJsonObject& object) {
if (!count) {
QProcessInfo info(object.toVariantMap());
// qDebug() << "Received process info" << info.toMap();
qint64 uid = (info.contains(QProcessInfoConstants::Uid) ? info.uid() : -1);
qint64 gid = (info.contains(QProcessInfoConstants::Gid) ? info.gid() : -1);
if (gid >= 0)
::setgid(gid);
if (uid >= 0)
::setuid(uid);
#if !defined(Q_OS_LINUX_ANDROID)
// Bionic does not have a getpwent() function defined
struct passwd * pw = getpwent();
if (pw)
::initgroups(pw->pw_name, pw->pw_gid);
else {
qWarning() << "Unable to find UID" << ::getuid() << "to set groups";
::setgroups(0,0);
}
#else
::setgroups(0,0);
#endif
}
else {
QString cmd = object.value("command").toString();
// qDebug() << "Received command" << cmd;
if (cmd == QLatin1String("stop")) {
// qDebug() << "Stopping";
exit(0);
}
else if (cmd == QLatin1String("crash")) {
// qDebug() << "Crashing";
exit(2);
}
else {
m_outbuf.append(cmd.toLatin1());
m_outbuf.append('\n');
m_out->setEnabled(true);
}
}
count++;
}
public slots:
void inReady(int fd) {
m_in->setEnabled(false);
const int bufsize = 1024;
uint oldSize = m_inbuf.size();
m_inbuf.resize(oldSize + bufsize);
int n = ::read(fd, m_inbuf.data()+oldSize, bufsize);
if (n > 0)
m_inbuf.resize(oldSize+n);
else
m_inbuf.resize(oldSize);
// Could check for an error here
// Check for a complete JSON object
while (m_inbuf.size() >= 12) {
qint32 message_size = qFromLittleEndian(((qint32 *)m_inbuf.data())[2]) + 8;
if (m_inbuf.size() < message_size)
break;
QByteArray msg = m_inbuf.left(message_size);
m_inbuf = m_inbuf.mid(message_size);
handleMessage(QJsonDocument::fromBinaryData(msg).object());
}
m_in->setEnabled(true);
}
void outReady(int fd) {
m_out->setEnabled(false);
if (m_outbuf.size()) {
int n = ::write(fd, m_outbuf.data(), m_outbuf.size());
if (n == -1) {
qDebug() << "Failed to write to stdout";
exit(-1);
}
if (n < m_outbuf.size())
m_outbuf = m_outbuf.mid(n);
else
m_outbuf.clear();
}
if (m_outbuf.size())
m_out->setEnabled(true);
}
private:
QSocketNotifier *m_in, *m_out;
QByteArray m_inbuf, m_outbuf;
int count;
};
const int kNumThreads = 4;
void * work(void *)
{
while (1)
sleep(1);
pthread_exit((void *)0);
return 0;
}
int
main(int argc, char **argv)
{
pthread_t thread[kNumThreads];
QCoreApplication app(argc, argv);
QStringList args = QCoreApplication::arguments();
QString progname = args.takeFirst();
while (args.size()) {
QString arg = args.at(0);
if (!arg.startsWith('-'))
break;
args.removeFirst();
if (arg == QStringLiteral("-noterm")) {
struct sigaction action;
memset(&action, 0, sizeof(action));
action.sa_handler=SIG_IGN;
if (sigaction(SIGTERM, &action, NULL) < 0) {
perror("Unable ignore SIGTERM");
return 1;
}
qDebug() << "tough";
}
else if (arg == QStringLiteral("-threads")) {
pthread_attr_t attr;
pthread_attr_init(&attr);
for (int j = 0 ; j < kNumThreads ; j++) {
int result = pthread_create(&thread[j], &attr, work, (void *)j);
if (result) {
printf("Error in pthread_created: %d\n", result);
return 3;
}
}
pthread_attr_destroy(&attr);
}
}
Container c;
return app.exec();
}
#include "testPrelaunch.moc"
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