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/*
* Copyright (C) 2004 Girish Ramakrishnan All Rights Reserved.
*
* This 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 software 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 software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
// $Id: kdocker.cpp,v 1.24 2005/02/04 10:25:46 cs19713 Exp $
#include <qsessionmanager.h>
#include <qdir.h>
#include <qfile.h>
#include <qtextcodec.h>
#include <qtextstream.h>
#include <qtimer.h>
#include <qstring.h>
#include <klocale.h>
#include "trace.h"
#include "traylabelmgr.h"
#include "kdocker.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
// #define TMPFILE_PREFIX QString("/tmp/kdocker.")
#define TMPFILE_PREFIX QDir::homeDirPath() + "/.kdocker."
KDocker::KDocker(int& argc, char** argv)
:QApplication(argc, argv), mTrayLabelMgr(0)
{
INIT_TRACE();
// Attempt doing anything only if the CLI arguments were good
opterr = 0; // suppress the warning
int option;
while ((option = getopt(argc, argv, TrayLabelMgr::options().latin1())) != EOF)
{
if (option == '?')
{
if (optopt == 'v') printVersion(); else printUsage(optopt);
::exit(0);
}
}
/*
* Detect and transfer control to previous instance (if one exists)
* _KDOCKER_RUNNING is a X Selection. We start out by trying to locate the
* selection owner. If someone else owns it, transfer control to that
* instance of KDocker
*/
Display *display = QPaintDevice::x11AppDisplay();
Atom kdocker = XInternAtom(display, "_KDOCKER_RUNNING", False);
Window prev_instance = XGetSelectionOwner(display, kdocker);
if (prev_instance == None)
{
mSelectionOwner = XCreateSimpleWindow(display, qt_xrootwin(), 1, 1, 1,
1, 1, 1, 1);
XSetSelectionOwner(display, kdocker, mSelectionOwner, CurrentTime);
TRACE("Selection owner set to 0x%x", (unsigned) mSelectionOwner);
mTrayLabelMgr = TrayLabelMgr::instance();
}
else
notifyPreviousInstance(prev_instance); // does not return
}
void KDocker::printVersion(void)
{
qDebug("Qt: %s", qVersion());
qDebug("KDocker: %s", KDOCKER_APP_VERSION);
}
// Prints the CLI arguments. Does not return
void KDocker::printUsage(char optopt)
{
if (optopt != 'h') qDebug(i18n("kdocker: invalid option -- %1").arg(optopt).local8Bit());
qDebug(i18n("Usage: KDocker [options] command\n").local8Bit());
qDebug(i18n("Docks any application into the system tray\n").local8Bit());
qDebug(i18n("command \tCommand to execute\n").local8Bit());
qDebug(i18n("Options").local8Bit());
qDebug(i18n("-a \tShow author information").local8Bit());
qDebug(i18n("-b \tDont warn about non-normal windows (blind mode)").local8Bit());
qDebug(i18n("-d \tDisable session management").local8Bit());
qDebug(i18n("-e \tEnable session management").local8Bit());
qDebug(i18n("-f \tDock window that has the focus(active window)").local8Bit());
qDebug(i18n("-h \tDisplay this help").local8Bit());
qDebug(i18n("-i icon\tCustom dock Icon").local8Bit());
qDebug(i18n("-l \tLaunch on startup").local8Bit());
qDebug(i18n("-m \tKeep application window mapped (dont hide on dock)").local8Bit());
qDebug(i18n("-o \tDock when obscured").local8Bit());
qDebug(i18n("-p secs\tSet ballooning timeout (popup time)").local8Bit());
qDebug(i18n("-q \tDisable ballooning title changes (quiet)").local8Bit());
qDebug(i18n("-t \tRemove this application from the task bar").local8Bit());
qDebug(i18n("-v \tDisplay version").local8Bit());
qDebug(i18n("-w wid \tWindow id of the application to dock\n").local8Bit());
qDebug(i18n("NOTE: Use -d for all startup scripts.\n").local8Bit());
qDebug(i18n("Bugs and wishes to [email protected]").local8Bit());
qDebug(i18n("Project information at http://kdocker.sourceforge.net").local8Bit());
}
void KDocker::notifyPreviousInstance(Window prevInstance)
{
Display *display = QPaintDevice::x11AppDisplay();
TRACE("Notifying previous instance [%x]", (unsigned) prevInstance);
// Dump all arguments in temporary file
QFile f(TMPFILE_PREFIX + QString().setNum(getpid()));
if (!f.open(IO_WriteOnly)) return;
QTextStream s(&f);
/*
* Its normal to use KDocker in startup scripts. We could be getting restored
* from a session at the same time. So, if we were getting restored and
* another instance already exists, send across the session id. Remember, qt
* strips out all the arguments that it understands. So need to do it by hand.
*/
if (isSessionRestored())
s << argv()[0] << " " << "-session" << " " << sessionId();
else
for (int i = 0; i < argc(); i++) s << argv()[i] << " ";
f.close();
/*
* Now tell our previous instance that we came to pass. Actually, it can
* figure it out itself using PropertyNotify events but this is a lot nicer
*/
XClientMessageEvent dock_event;
memset(&dock_event, 0, sizeof(XClientMessageEvent));
dock_event.display = display;
dock_event.window = prevInstance;
dock_event.send_event = True;
dock_event.type = ClientMessage;
dock_event.message_type = 0x220679; // it all started this day
dock_event.format = 8;
dock_event.data.l[0] = 0xBABE; // love letter ;)
dock_event.data.l[1] = getpid();
XSendEvent(display, prevInstance, False, 0, (XEvent *) &dock_event);
XSync(display, False);
::exit(0);
}
/*
* The X11 Event filter called by Qt. Look out for ClientMessage events from
* our new instance
*/
bool KDocker::x11EventFilter(XEvent * event)
{
if (event->type == ClientMessage)
{
// look for requests from a new instance of kdocker
XClientMessageEvent *client = (XClientMessageEvent *) event;
if (!(client->message_type == 0x220679 && client->data.l[0] == 0xBABE))
return FALSE;
TRACE("ClientMessage from PID=%ld. SelOwn=0x%x",
client->data.l[1], (unsigned) mSelectionOwner);
char tmp[50];
struct stat buf;
sprintf(tmp, QString(TMPFILE_PREFIX "%ld").local8Bit(), client->data.l[1]);
if (stat(tmp, &buf) || (getuid()!=buf.st_uid))
{
/*
* We make sure that the owner of this process and the owner of the file
* are the same. This will prevent someone from executing arbitrary
* programs by sending client message. Of course, you can send a message
* only if you are authenticated to the X session and have permission to
* create files in TMPFILE_PREFIX. So this code is there just for the
* heck of it.
*/
TRACE("User %i is trying something fishy...", buf.st_uid);
unlink(tmp);
return TRUE;
}
QFile f(tmp);
if (!f.open(IO_ReadOnly)) return TRUE;
QTextStream s(&f);
QStringList argv;
while (!s.atEnd()) { QString x; s >> x; argv += x; }
f.close();
unlink(tmp); // delete the tmp file
mTrayLabelMgr->processCommand(argv);
return TRUE;
}
else return mTrayLabelMgr->x11EventFilter(event);
}
/*
* XSMP Support
*/
void KDocker::saveState(QSessionManager &sm)
{
QString sf = mTrayLabelMgr->saveSession();
QStringList discard_command;
discard_command << "rm" << sf;
sm.setDiscardCommand(discard_command);
sm.setRestartHint(QSessionManager::RestartIfRunning);
QStringList restart_command;
restart_command << this->argv()[0]
<< "-session" << sm.sessionId();
sm.setRestartCommand(restart_command);
TRACE("SessionFile=%s AppName=%s", sf.latin1(), this->argv()[0]);
DUMP_TRACE(QDir::homeDirPath() + "/kdocker.trace");
// sm.setRestartCommand(applicationFilePath());
}
#include "kdocker.moc"
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