1/*
2 This file is part of the KDE libraries
3 Copyright (c) 1999 Waldo Bastian <bastian@kde.org>
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License version 2 as published by the Free Software Foundation.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to
16 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 Boston, MA 02110-1301, USA.
18*/
19
20#include <config.h>
21
22#include <unistd.h>
23#include <fcntl.h>
24
25#include "klauncher.h"
26#include <kcomponentdata.h>
27#include "kcrash.h"
28#include "kdebug.h"
29#include <stdio.h>
30#include <stdlib.h>
31#include <signal.h>
32#include <klocale.h>
33#include <kde_file.h>
34
35#include "klauncher_cmds.h"
36#include <QtCore/QCoreApplication>
37
38#ifndef USE_KPROCESS_FOR_KIOSLAVES
39static int sigpipe[ 2 ];
40static void sig_handler(int sig_num)
41{
42 // No recursion
43 KDE_signal( SIGHUP, SIG_IGN);
44 KDE_signal( SIGTERM, SIG_IGN);
45 fprintf(stderr, "klauncher: Exiting on signal %d\n", sig_num);
46 char tmp = 'x';
47 write( sigpipe[ 1 ], &tmp, 1 );
48}
49#endif
50
51#if defined(Q_OS_DARWIN) || defined (Q_OS_MAC)
52#include <kkernel_mac.h>
53#endif
54
55extern "C" KDE_EXPORT int kdemain( int argc, char**argv )
56{
57#ifndef Q_WS_WIN
58 // Started via kdeinit.
59 int launcherFd;
60 if (argc != 2 || memcmp(argv[1], "--fd=", 5) || !(launcherFd = atoi(argv[1] + 5)))
61 {
62 fprintf(stderr, "%s", i18n("klauncher: This program is not supposed to be started manually.\n"
63 "klauncher: It is started automatically by kdeinit4.\n").toLocal8Bit().data());
64 return 1;
65 }
66#endif
67
68#if defined(Q_OS_DARWIN) || defined (Q_OS_MAC)
69 mac_initialize_dbus();
70#endif
71
72 KComponentData componentData("klauncher", "kdelibs4");
73 KGlobal::locale();
74
75 // WABA: Make sure not to enable session management.
76 putenv(strdup("SESSION_MANAGER="));
77
78 // We need a QCoreApplication to get a DBus event loop
79 QCoreApplication app(argc, argv);
80 app.setApplicationName( componentData.componentName() );
81
82 int maxTry = 3;
83 while(true)
84 {
85 QString service(QLatin1String("org.kde.klauncher")); // same as ktoolinvocation.cpp
86 if (!QDBusConnection::sessionBus().isConnected()) {
87 kWarning() << "No DBUS session-bus found. Check if you have started the DBUS server.";
88 return 1;
89 }
90 QDBusReply<QDBusConnectionInterface::RegisterServiceReply> reply =
91 QDBusConnection::sessionBus().interface()->registerService(service);
92 if (!reply.isValid())
93 {
94 kWarning() << "DBUS communication problem!";
95 return 1;
96 }
97 if (reply == QDBusConnectionInterface::ServiceRegistered)
98 break;
99
100 if (--maxTry == 0)
101 {
102 kWarning() << "Another instance of klauncher is already running!";
103 return 1;
104 }
105
106 // Wait a bit...
107 kWarning() << "Waiting for already running klauncher to exit.";
108 sleep(1);
109
110 // Try again...
111 }
112
113#ifndef USE_KPROCESS_FOR_KIOSLAVES
114 KLauncher *launcher = new KLauncher(launcherFd);
115#else
116 KLauncher *launcher = new KLauncher();
117#endif
118 QDBusConnection::sessionBus().registerObject(QString::fromLatin1("/"), launcher);
119
120#ifndef USE_KPROCESS_FOR_KIOSLAVES
121 if (pipe(sigpipe) != 0) {
122 perror("klauncher: pipe failed.");
123 return 1;
124 }
125 QSocketNotifier* signotif = new QSocketNotifier( sigpipe[ 0 ], QSocketNotifier::Read, launcher );
126 QObject::connect( signotif, SIGNAL(activated(int)), launcher, SLOT(destruct()));
127 KCrash::setEmergencySaveFunction(sig_handler);
128 KDE_signal( SIGHUP, sig_handler);
129 KDE_signal( SIGPIPE, SIG_IGN);
130 KDE_signal( SIGTERM, sig_handler);
131#endif
132
133 return app.exec();
134}
135