mirror of
https://bitbucket.org/smil3y/kdelibs.git
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118 lines
3.6 KiB
C++
118 lines
3.6 KiB
C++
/*
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This file is part of the KDE libraries
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Copyright (c) 1999 Waldo Bastian <bastian@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "klauncher.h"
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#include <kcomponentdata.h>
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#include "kcrash.h"
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#include "kdebug.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <klocale.h>
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#include <kde_file.h>
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#include "klauncher_cmds.h"
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#include <QtCore/QCoreApplication>
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static int sigpipe[ 2 ];
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static void sig_handler(int sig_num)
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{
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// No recursion
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KDE_signal( SIGHUP, SIG_IGN);
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KDE_signal( SIGTERM, SIG_IGN);
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fprintf(stderr, "klauncher: Exiting on signal %d\n", sig_num);
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char tmp = 'x';
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write( sigpipe[ 1 ], &tmp, 1 );
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}
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int main( int argc, char**argv )
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{
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// Started via kdeinit.
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int launcherFd;
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if (argc != 2 || memcmp(argv[1], "--fd=", 5) || !(launcherFd = atoi(argv[1] + 5)))
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{
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fprintf(stderr, "%s", i18n("klauncher: This program is not supposed to be started manually.\n"
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"klauncher: It is started automatically by kdeinit4.\n").toLocal8Bit().data());
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return 1;
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}
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KComponentData componentData("klauncher", "kdelibs4");
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KGlobal::locale();
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// WABA: Make sure not to enable session management.
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putenv(strdup("SESSION_MANAGER="));
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// We need a QCoreApplication to get a DBus event loop
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QCoreApplication app(argc, argv);
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app.setApplicationName( componentData.componentName() );
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int maxTry = 3;
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while(true)
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{
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QString service(QLatin1String("org.kde.klauncher")); // same as ktoolinvocation.cpp
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if (!QDBusConnection::sessionBus().isConnected()) {
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kWarning() << "No DBUS session-bus found. Check if you have started the DBUS server.";
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return 1;
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}
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QDBusReply<QDBusConnectionInterface::RegisterServiceReply> reply =
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QDBusConnection::sessionBus().interface()->registerService(service);
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if (!reply.isValid())
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{
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kWarning() << "DBUS communication problem!";
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return 1;
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}
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if (reply == QDBusConnectionInterface::ServiceRegistered)
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break;
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if (--maxTry == 0)
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{
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kWarning() << "Another instance of klauncher is already running!";
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return 1;
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}
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// Wait a bit...
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kWarning() << "Waiting for already running klauncher to exit.";
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sleep(1);
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// Try again...
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}
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KLauncher *launcher = new KLauncher(launcherFd);
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QDBusConnection::sessionBus().registerObject(QString::fromLatin1("/"), launcher);
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if (pipe(sigpipe) != 0) {
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perror("klauncher: pipe failed.");
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return 1;
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}
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QSocketNotifier* signotif = new QSocketNotifier( sigpipe[ 0 ], QSocketNotifier::Read, launcher );
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QObject::connect( signotif, SIGNAL(activated(int)), launcher, SLOT(destruct()));
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KCrash::setEmergencySaveFunction(sig_handler);
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KDE_signal( SIGHUP, sig_handler);
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KDE_signal( SIGPIPE, SIG_IGN);
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KDE_signal( SIGTERM, sig_handler);
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return app.exec();
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}
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