runtime/nepomuk/servicestub/main.cpp

   1 /* This file is part of the KDE Project
   2    Copyright (c) 2008 Sebastian Trueg <trueg@kde.org>
   3
   4    This library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public
   6    License version 2 as published by the Free Software Foundation.
   7
   8    This library is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11    Library General Public License for more details.
  12
  13    You should have received a copy of the GNU Library General Public License
  14    along with this library; see the file COPYING.LIB.  If not, write to
  15    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  16    Boston, MA 02110-1301, USA.
  17 */
  18
  19
  20 #include <KComponentData>
  21 #include <KCmdLineArgs>
  22 #include <KAboutData>
  23 #include <KService>
  24 #include <KServiceTypeTrader>
  25 #include <KDebug>
  26
  27 #include <QtCore/QTextStream>
  28 #include <QtCore/QTimer>
  29 #include <QtGui/QApplication>
  30 #include <QtDBus/QDBusConnection>
  31 #include <QtDBus/QDBusConnectionInterface>
  32
  33 #include <signal.h>
  34 #include <stdio.h>
  35
  36 #include "servicecontrol.h"
  37
  38 namespace {
  39 #ifndef Q_OS_WIN
  40     void signalHandler( int signal )
  41     {
  42         switch( signal ) {
  43         case SIGHUP:
  44         case SIGQUIT:
  45         case SIGINT:
  46             QCoreApplication::exit( 0 );
  47         }
  48     }
  49 #endif
  50
  51     void installSignalHandler() {
  52 #ifndef Q_OS_WIN
  53         struct sigaction sa;
  54         ::memset( &sa, 0, sizeof( sa ) );
  55         sa.sa_handler = signalHandler;
  56         sigaction( SIGHUP, &sa, 0 );
  57         sigaction( SIGINT, &sa, 0 );
  58         sigaction( SIGQUIT, &sa, 0 );
  59 #endif
  60     }
  61 }
  62
  63
  64 int main( int argc, char** argv )
  65 {
  66     KAboutData aboutData( "nepomukservicestub", "nepomuk",
  67                           ki18n("Nepomuk Service Stub"),
  68                           "0.2",
  69                           ki18n("Nepomuk Service Stub"),
  70                           KAboutData::License_GPL,
  71                           ki18n("(c) 2008, Sebastian Trüg"),
  72                           KLocalizedString(),
  73                           "http://nepomuk.kde.org" );
  74     aboutData.addAuthor(ki18n("Sebastian Trüg"),ki18n("Maintainer"), "trueg@kde.org");
  75
  76     KCmdLineOptions options;
  77     options.add("+servicename", ki18nc("@info:shell", "Service to start"));
  78     KCmdLineArgs::addCmdLineOptions( options );
  79
  80     KCmdLineArgs::init( argc, argv, &aboutData );
  81
  82     QApplication app( argc, argv );
  83     installSignalHandler();
  84     QApplication::setQuitOnLastWindowClosed( false );
  85
  86     // FIXME: set the proper KConfig rc name using the service name
  87
  88     KCmdLineArgs* args = KCmdLineArgs::parsedArgs();
  89
  90     if( args->count() != 1 ) {
  91         KCmdLineArgs::usageError( i18n("No service name specified") );
  92     }
  93
  94     QTextStream s( stderr );
  95
  96     QString serviceName = args->arg(0);
  97     args->clear();
  98
  99     aboutData.setAppName( serviceName.toLocal8Bit() );
 100     KComponentData compData( aboutData );
 101
 102
 103     // check if NepomukServer is running
 104     // ====================================
 105 //     if( !QDBusConnection::sessionBus().interface()->isServiceRegistered( "org.kde.NepomukServer" ) ) {
 106 //         s << "Nepomuk server not running." << endl;
 107 //         return ErrorMissingDependency;
 108 //     }
 109
 110
 111     // search the service
 112     // ====================================
 113     KService::List services = KServiceTypeTrader::self()->query( "NepomukService", "DesktopEntryName == '" + serviceName + "'" );
 114     if( services.isEmpty() ) {
 115         s << i18n( "Unknown service name:") << " " <<  serviceName << endl;
 116         return Nepomuk::ServiceControl::ErrorUnknownServiceName;
 117     }
 118     KService::Ptr service = services.first();
 119
 120
 121     // Check if this service is already running
 122     // ====================================
 123     if( QDBusConnection::sessionBus().interface()->isServiceRegistered( Nepomuk::ServiceControl::dbusServiceName( serviceName ) ) ) {
 124         s << "Service " << serviceName << " already running." << endl;
 125         return Nepomuk::ServiceControl::ErrorServiceAlreadyRunning;
 126     }
 127
 128
 129     // Check the service dependencies
 130     // ====================================
 131     QStringList dependencies = service->property( "X-KDE-Nepomuk-dependencies", QVariant::StringList ).toStringList();
 132     foreach( const QString &dep, dependencies ) {
 133         if( !QDBusConnection::sessionBus().interface()->isServiceRegistered( Nepomuk::ServiceControl::dbusServiceName( dep ) ) ) {
 134             s << "Missing dependency " << dep << endl;
 135             return Nepomuk::ServiceControl::ErrorMissingDependency;
 136         }
 137     }
 138
 139
 140     // register the service control
 141     // ====================================
 142     Nepomuk::ServiceControl* control = new Nepomuk::ServiceControl( serviceName, service, &app );
 143
 144
 145     // start the service (queued since we need an event loop)
 146     // ====================================
 147     QTimer::singleShot( 0, control, SLOT( start() ) );
 148
 149     return app.exec();
 150 }