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/*
kwrited is a write(1) receiver for KDE.
Copyright 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
Copyright 2008 by George Kiagiadakis <gkiagia@users.sourceforge.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/
// Own
#include "kwrited.h"
#include <QDebug>
#include <kptydevice.h>
#include <kuser.h>
#include <knotification.h>
#include <klocalizedstring.h>
#include <kaboutdata.h>
#if defined(BUILD_AS_EXECUTABLE)
# include <QApplication>
# include <QSessionManager>
# include <signal.h>
# include <sys/types.h>
# include <unistd.h>
#else
# include <kpluginfactory.h>
# include <kpluginloader.h>
#endif
static inline KAboutData aboutData()
{
return KAboutData("kwrited", i18n("kwrited"), PROJECT_VERSION);
}
#if defined(BUILD_AS_EXECUTABLE)
static uid_t original_euid;
static gid_t original_egid;
static void sigterm_handler(int signal)
{
Q_UNUSED(signal)
QApplication::quit();
}
int main(int argc, char **argv)
{
//drop elevated privileges temporarily
original_euid = geteuid();
original_egid = getegid();
seteuid(getuid());
setegid(getgid());
//install a signal handler to exit gracefully
//(so that pty->logout() is called in ~KWrited())
signal(SIGTERM, sigterm_handler);
signal(SIGINT, sigterm_handler);
signal(SIGHUP, sigterm_handler);
KAboutData::setApplicationData(aboutData());
QApplication::setDesktopSettingsAware(false);
QApplication a(argc, argv);
#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
QGuiApplication::setFallbackSessionManagementEnabled(false);
#endif
auto disableSessionManagement = [](QSessionManager &sm) {
sm.setRestartHint(QSessionManager::RestartNever);
};
QObject::connect(&a, &QGuiApplication::commitDataRequest, disableSessionManagement);
QObject::connect(&a, &QGuiApplication::saveStateRequest, disableSessionManagement);
KWrited w;
return a.exec();
}
#else // BUILD_AS_EXECUTABLE
KWritedModule::KWritedModule(QObject* parent, const QList<QVariant>&)
: KDEDModule(parent)
{
pro = new KWrited;
}
KWritedModule::~KWritedModule()
{
delete pro;
}
K_PLUGIN_FACTORY_WITH_JSON(KWritedFactory,
"kwrited.json",
registerPlugin<KWritedModule>();
)
#endif //BUILD_AS_EXECUTABLE
KWrited::KWrited() : QObject()
{
pty = new KPtyDevice();
pty->open();
#if defined(BUILD_AS_EXECUTABLE)
dup2(pty->slaveFd(), 0); //HACK: login() from glibc requires this to login correctly
//restore elevated privileges
seteuid(original_euid);
setegid(original_egid);
#endif
pty->login(KUser(KUser::UseRealUserID).loginName().toLocal8Bit().data(), qgetenv("DISPLAY"));
#if defined(BUILD_AS_EXECUTABLE)
//drop privileges again
seteuid(getuid());
setegid(getgid());
#endif
connect(pty, SIGNAL(readyRead()), this, SLOT(block_in()));
//qDebug() << "listening on device" << pty->ttyName();
}
KWrited::~KWrited()
{
#if defined(BUILD_AS_EXECUTABLE)
//restore elevated privileges
seteuid(original_euid);
setegid(original_egid);
#endif
pty->logout();
#if defined(BUILD_AS_EXECUTABLE)
//drop privileges again
seteuid(getuid());
setegid(getgid());
#endif
delete pty;
}
void KWrited::block_in()
{
QByteArray buf = pty->readAll();
QString msg = QString::fromLocal8Bit( buf.constData(), buf.size() );
msg.remove('\r');
msg.remove('\a');
KNotification *notification = new KNotification("NewMessage", 0, KNotification::Persistent);
#if !defined(BUILD_AS_EXECUTABLE)
notification->setComponentName( QStringLiteral("kwrited") );
#endif
notification->setText( msg );
connect(notification, SIGNAL(closed()), notification, SLOT(deleteLater()) );
notification->sendEvent();
}
#if !defined(BUILD_AS_EXECUTABLE)
#include "kwrited.moc"
#endif
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