KInit

klauncher_main.cpp

00001 /*
00002   This file is part of the KDE libraries
00003   Copyright (c) 1999 Waldo Bastian <bastian@kde.org>
00004 
00005   This library is free software; you can redistribute it and/or
00006   modify it under the terms of the GNU Library General Public
00007   License version 2 as published by the Free Software Foundation.
00008 
00009   This library is distributed in the hope that it will be useful,
00010   but WITHOUT ANY WARRANTY; without even the implied warranty of
00011   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012   Library General Public License for more details.
00013 
00014   You should have received a copy of the GNU Library General Public License
00015   along with this library; see the file COPYING.LIB.  If not, write to
00016   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017   Boston, MA 02110-1301, USA.
00018 */
00019 
00020 #include "config.h"
00021 
00022 #include <unistd.h>
00023 #include <fcntl.h>
00024 
00025 #include "kapplication.h"
00026 #include "klauncher.h"
00027 #include "kcmdlineargs.h"
00028 #include "kcrash.h"
00029 #include "kdebug.h"
00030 #include <stdio.h>
00031 #include <stdlib.h>
00032 #include <signal.h>
00033 #include <qcstring.h>
00034 #include <klocale.h>
00035 
00036 #include "klauncher_cmds.h"
00037 
00038 static void sig_handler(int sig_num)
00039 {
00040    // No recursion
00041    signal( SIGHUP, SIG_IGN);
00042    signal( SIGTERM, SIG_IGN);
00043 fprintf(stderr, "klauncher: Exiting on signal %d\n", sig_num);
00044    KLauncher::destruct(255);
00045 }
00046 
00047 static KCmdLineOptions options[] =
00048 {
00049   { "new-startup", "Internal", 0 },
00050   KCmdLineLastOption
00051 };
00052 
00053 extern "C" KDE_EXPORT int kdemain( int argc, char**argv )
00054 {
00055    // Started via kdeinit.
00056    if (fcntl(LAUNCHER_FD, F_GETFD) == -1)
00057    {
00058       fprintf(stderr, "%s", i18n("klauncher: This program is not supposed to be started manually.\n"
00059                                  "klauncher: It is started automatically by kdeinit.\n").local8Bit().data());
00060       return 1;
00061    }
00062 
00063    QCString cname = KApplication::launcher();
00064    char *name = cname.data();
00065    KCmdLineArgs::init(argc, argv, name, "KLauncher", "A service launcher.",
00066                        "v1.0");
00067 
00068    KLauncher::addCmdLineOptions();
00069    KCmdLineArgs::addCmdLineOptions( options );
00070 
00071    // WABA: Make sure not to enable session management.
00072    putenv(strdup("SESSION_MANAGER="));
00073 
00074    // Allow the locale to initialize properly
00075    KLocale::setMainCatalogue("kdelibs");
00076 
00077    KCmdLineArgs *args = KCmdLineArgs::parsedArgs();
00078 
00079    int maxTry = 3;
00080    while(true)
00081    {
00082       QCString dcopName = KApplication::dcopClient()->registerAs(name, false);
00083       if (dcopName.isEmpty())
00084       {
00085          kdWarning() << "DCOP communication problem!" << endl;
00086          return 1;
00087       }
00088       if (dcopName == cname)
00089          break; // Good!
00090 
00091       if (--maxTry == 0)
00092       {
00093          kdWarning() << "Another instance of klauncher is already running!" << endl;
00094          return 1;
00095       }
00096       
00097       // Wait a bit...
00098       kdWarning() << "Waiting for already running klauncher to exit." << endl;
00099       sleep(1);
00100 
00101       // Try again...
00102    }
00103    
00104    KLauncher *launcher = new KLauncher(LAUNCHER_FD, args->isSet("new-startup"));
00105    launcher->dcopClient()->setDefaultObject( name );
00106    launcher->dcopClient()->setDaemonMode( true );
00107 
00108    KCrash::setEmergencySaveFunction(sig_handler);
00109    signal( SIGHUP, sig_handler);
00110    signal( SIGPIPE, SIG_IGN);
00111    signal( SIGTERM, sig_handler);
00112 
00113    launcher->exec();
00114    return 0;
00115 }
00116
KInit

klauncher_main.cpp

KInit

API Reference
