File indexing completed on 2025-01-19 04:23:30

 /*
     This file is part of Konsole
 
     Copyright (C) 2006-2007 by Robert Knight <robertknight@gmail.com>
     Copyright (C) 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
 
     Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
 
     This program 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 program 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 program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     02110-1301  USA.
 */
 
 // Own
 #include "Session.h"
 
 // Standard
 #include <stdlib.h>
 
 // Qt
 #include <QApplication>
 #include <QByteRef>
 #include <QDir>
 #include <QFile>
 #include <QRegExp>
 #include <QStringList>
 #include <QFile>
 #include <QtDebug>
 
 #include "Pty.h"
 //#include "kptyprocess.h"
 #include "TerminalDisplay.h"
 #include "ShellCommand.h"
 #include "Vt102Emulation.h"
 
 // QMLTermWidget
 #include <QQuickWindow>
 
 using namespace Konsole;
 
 int Session::lastSessionId = 0;
 
 Session::Session(QObject* parent) :
     QObject(parent),
         _shellProcess(0)
         , _emulation(0)
         , _monitorActivity(false)
         , _monitorSilence(false)
         , _notifiedActivity(false)
         , _autoClose(true)
         , _wantedClose(false)
         , _silenceSeconds(10)
         , _isTitleChanged(false)
         , _addToUtmp(false)  // disabled by default because of a bug encountered on certain systems
         // which caused Konsole to hang when closing a tab and then opening a new
         // one.  A 'QProcess destroyed while still running' warning was being
         // printed to the terminal.  Likely a problem in KPty::logout()
         // or KPty::login() which uses a QProcess to start /usr/bin/utempter
         , _flowControl(true)
         , _fullScripting(false)
         , _sessionId(0)
 //   , _zmodemBusy(false)
 //   , _zmodemProc(0)
 //   , _zmodemProgress(0)
         , _hasDarkBackground(false)
         , _foregroundProcessInfo(NULL)
         , _foregroundPid(0)
 {
     //prepare DBus communication
 //    new SessionAdaptor(this);
     _sessionId = ++lastSessionId;
 //    QDBusConnection::sessionBus().registerObject(QLatin1String("/Sessions/")+QString::number(_sessionId), this);
 
     //create teletype for I/O with shell process
     _shellProcess = new Pty();
     ptySlaveFd = _shellProcess->pty()->slaveFd();
 
     //create emulation backend
     _emulation = new Vt102Emulation();
 
     connect( _emulation, SIGNAL( titleChanged( int, const QString & ) ),
              this, SLOT( setUserTitle( int, const QString & ) ) );
     connect( _emulation, SIGNAL( stateSet(int) ),
              this, SLOT( activityStateSet(int) ) );
 //    connect( _emulation, SIGNAL( zmodemDetected() ), this ,
 //            SLOT( fireZModemDetected() ) );
     connect( _emulation, SIGNAL( changeTabTextColorRequest( int ) ),
              this, SIGNAL( changeTabTextColorRequest( int ) ) );
     connect( _emulation, SIGNAL(profileChangeCommandReceived(const QString &)),
              this, SIGNAL( profileChangeCommandReceived(const QString &)) );
 
     connect(_emulation, SIGNAL(imageResizeRequest(QSize)),
             this, SLOT(onEmulationSizeChange(QSize)));
     connect(_emulation, SIGNAL(imageSizeChanged(int, int)),
             this, SLOT(onViewSizeChange(int, int)));
     connect(_emulation, &Vt102Emulation::cursorChanged,
             this, &Session::cursorChanged);
 
     //connect teletype to emulation backend
     _shellProcess->setUtf8Mode(_emulation->utf8());
 
     connect( _shellProcess,SIGNAL(receivedData(const char *,int)),this,
              SLOT(onReceiveBlock(const char *,int)) );
     connect( _emulation,SIGNAL(sendData(const char *,int)),_shellProcess,
              SLOT(sendData(const char *,int)) );
     connect( _emulation,SIGNAL(lockPtyRequest(bool)),_shellProcess,SLOT(lockPty(bool)) );
     connect( _emulation,SIGNAL(useUtf8Request(bool)),_shellProcess,SLOT(setUtf8Mode(bool)) );
 
     connect( _shellProcess,SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(done(int)) );
     // not in kprocess anymore connect( _shellProcess,SIGNAL(done(int)), this, SLOT(done(int)) );
 
     //setup timer for monitoring session activity
     _monitorTimer = new QTimer(this);
     _monitorTimer->setSingleShot(true);
     connect(_monitorTimer, SIGNAL(timeout()), this, SLOT(monitorTimerDone()));
 }
 
 WId Session::windowId() const
 {
     // On Qt5, requesting window IDs breaks QQuickWidget and the likes,
     // for example, see the following bug reports:
     // https://bugreports.qt.io/browse/QTBUG-40765
     // https://codereview.qt-project.org/#/c/94880/
     return 0;
 }
 
 QString Session::validDirectory(const QString &dir) const
 {
     QString validDir = dir;
     if (validDir.isEmpty()) {
         validDir = QDir::currentPath();
     }
 
     const QFileInfo fi(validDir);
     if (!fi.exists() || !fi.isDir()) {
         validDir = QDir::homePath();
     }
 
     return validDir;
 }
 
 void Session::setDarkBackground(bool darkBackground)
 {
     _hasDarkBackground = darkBackground;
 }
 bool Session::hasDarkBackground() const
 {
     return _hasDarkBackground;
 }
 bool Session::isRunning() const
 {
     return _shellProcess->state() == QProcess::Running;
 }
 
 void Session::setCodec(QTextCodec * codec)
 {
     emulation()->setCodec(codec);
 }
 
 void Session::setProgram(const QString & program)
 {
     _program = ShellCommand::expand(program);
 }
 
 void Session::setInitialWorkingDirectory(const QString & dir)
 {
     _initialWorkingDir = validDirectory(ShellCommand::expand(dir));
 }
 
 void Session::setArguments(const QStringList & arguments)
 {
     _arguments = ShellCommand::expand(arguments);
 }
 
 QList<TerminalDisplay *> Session::views() const
 {
     return _views;
 }
 
 void Session::addView(TerminalDisplay * widget)
 {
     Q_ASSERT( !_views.contains(widget) );
 
     _views.append(widget);
 
     if ( _emulation != 0 ) {
         // connect emulation - view Q_SIGNALS and Q_SLOTS
         connect( widget , SIGNAL(keyPressedSignal(QKeyEvent *)) , _emulation ,
                  SLOT(sendKeyEvent(QKeyEvent *)) );
         connect( widget , SIGNAL(mouseSignal(int,int,int,int)) , _emulation ,
                  SLOT(sendMouseEvent(int,int,int,int)) );
         connect( widget , SIGNAL(sendStringToEmu(const char *)) , _emulation ,
                  SLOT(sendString(const char *)) );
 
         // allow emulation to notify view when the foreground process
         // indicates whether or not it is interested in mouse Q_SIGNALS
         connect( _emulation , SIGNAL(programUsesMouseChanged(bool)) , widget ,
                  SLOT(setUsesMouse(bool)) );
 
         widget->setUsesMouse( _emulation->programUsesMouse() );
 
         connect( _emulation , SIGNAL(programBracketedPasteModeChanged(bool)) ,
                  widget , SLOT(setBracketedPasteMode(bool)) );
 
         widget->setBracketedPasteMode(_emulation->programBracketedPasteMode());
 
         widget->setScreenWindow(_emulation->createWindow());
     }
 
     //connect view Q_SIGNALS and Q_SLOTS
     QObject::connect( widget ,SIGNAL(changedContentSizeSignal(int,int)),this,
                       SLOT(onViewSizeChange(int,int)));
 
     QObject::connect( widget ,SIGNAL(destroyed(QObject *)) , this ,
                       SLOT(viewDestroyed(QObject *)) );
 //slot for close
     QObject::connect(this, SIGNAL(finished()), widget, SLOT(close()));
 
 }
 
 void Session::viewDestroyed(QObject * view)
 {
     TerminalDisplay * display = (TerminalDisplay *)view;
 
     Q_ASSERT( _views.contains(display) );
 
     removeView(display);
 }
 
 void Session::removeView(TerminalDisplay * widget)
 {
     _views.removeAll(widget);
 
     disconnect(widget,0,this,0);
 
     if ( _emulation != 0 ) {
         // disconnect
         //  - key presses Q_SIGNALS from widget
         //  - mouse activity Q_SIGNALS from widget
         //  - string sending Q_SIGNALS from widget
         //
         //  ... and any other Q_SIGNALS connected in addView()
         disconnect( widget, 0, _emulation, 0);
 
         // disconnect state change Q_SIGNALS emitted by emulation
         disconnect( _emulation , 0 , widget , 0);
     }
 
     // close the session automatically when the last view is removed
     if ( _views.count() == 0 ) {
         close();
     }
 }
 
 void Session::run()
 {
     // Upon a KPty error, there is no description on what that error was...
     // Check to see if the given program is executable.
 
     /* ok iam not exactly sure where _program comes from - however it was set to /bin/bash on my system
      * Thats bad for BSD as its /usr/local/bin/bash there - its also bad for arch as its /usr/bin/bash there too!
      * So i added a check to see if /bin/bash exists - if no then we use $SHELL - if that does not exist either, we fall back to /bin/sh
      * As far as i know /bin/sh exists on every unix system.. You could also just put some ifdef __FREEBSD__ here but i think these 2 filechecks are worth
      * their computing time on any system - especially with the problem on arch linux beeing there too.
      */
     QString exec = QString::fromLocal8Bit(QFile::encodeName(_program));
     // if 'exec' is not specified, fall back to default shell.  if that
     // is not set then fall back to /bin/sh
 
     // here we expect full path. If there is no fullpath let's expect it's
     // a custom shell (eg. python, etc.) available in the PATH.
     if (exec.startsWith(QLatin1Char('/')) || exec.isEmpty())
     {
         const QString defaultShell{QLatin1String("/bin/sh")};
 
         QFile excheck(exec);
         if ( exec.isEmpty() || !excheck.exists() ) {
             exec = QString::fromLocal8Bit(qgetenv("SHELL"));
         }
         excheck.setFileName(exec);
 
         if ( exec.isEmpty() || !excheck.exists() ) {
             qWarning() << "Neither default shell nor $SHELL is set to a correct path. Fallback to" << defaultShell;
             exec = defaultShell;
         }
     }
 
     // _arguments sometimes contain ("") so isEmpty()
     // or count() does not work as expected...
     QString argsTmp(_arguments.join(QLatin1Char(' ')).trimmed());
     QStringList arguments;
     arguments << exec;
     if (argsTmp.length())
         arguments << _arguments;
 
     QString cwd = QDir::currentPath();
     if (!_initialWorkingDir.isEmpty()) {
         _shellProcess->setWorkingDirectory(_initialWorkingDir);
     } else {
         _shellProcess->setWorkingDirectory(cwd);
     }
 
     _shellProcess->setFlowControlEnabled(_flowControl);
     _shellProcess->setErase(_emulation->eraseChar());
 
     // this is not strictly accurate use of the COLORFGBG variable.  This does not
     // tell the terminal exactly which colors are being used, but instead approximates
     // the color scheme as "black on white" or "white on black" depending on whether
     // the background color is deemed dark or not
     QString backgroundColorHint = _hasDarkBackground ? QLatin1String("COLORFGBG=15;0") : QLatin1String("COLORFGBG=0;15");
 
     /* if we do all the checking if this shell exists then we use it ;)
      * Dont know about the arguments though.. maybe youll need some more checking im not sure
      * However this works on Arch and FreeBSD now.
      */
     int result = _shellProcess->start(exec,
                                       arguments,
                                       _environment << backgroundColorHint,
                                       windowId(),
                                       _addToUtmp);
 
     if (result < 0) {
         qDebug() << "CRASHED! result: " << result;
         return;
     }
 
     _shellProcess->setWriteable(false);  // We are reachable via kwrited.
     Q_EMIT started();
 }
 
 void Session::runEmptyPTY()
 {
     _shellProcess->setFlowControlEnabled(_flowControl);
     _shellProcess->setErase(_emulation->eraseChar());
     _shellProcess->setWriteable(false);
 
     // disconnet send data from emulator to internal terminal process
     disconnect( _emulation,SIGNAL(sendData(const char *,int)),
                 _shellProcess, SLOT(sendData(const char *,int)) );
 
     _shellProcess->setEmptyPTYProperties();
     Q_EMIT started();
 }
 
 void Session::setUserTitle( int what, const QString & caption )
 {
     //set to true if anything is actually changed (eg. old _nameTitle != new _nameTitle )
     bool modified = false;
 
     // (btw: what=0 changes _userTitle and icon, what=1 only icon, what=2 only _nameTitle
     if ((what == 0) || (what == 2)) {
         _isTitleChanged = true;
         if ( _userTitle != caption ) {
             _userTitle = caption;
             modified = true;
         }
     }
 
     if ((what == 0) || (what == 1)) {
         _isTitleChanged = true;
         if ( _iconText != caption ) {
             _iconText = caption;
             modified = true;
         }
     }
 
     if (what == 11) {
         QString colorString = caption.section(QLatin1Char(';'),0,0);
         //qDebug() << __FILE__ << __LINE__ << ": setting background colour to " << colorString;
         QColor backColor = QColor(colorString);
         if (backColor.isValid()) { // change color via \033]11;Color\007
             if (backColor != _modifiedBackground) {
                 _modifiedBackground = backColor;
 
                 // bail out here until the code to connect the terminal display
                 // to the changeBackgroundColor() signal has been written
                 // and tested - just so we don't forget to do this.
                 Q_ASSERT( 0 );
 
                 Q_EMIT changeBackgroundColorRequest(backColor);
             }
         }
     }
 
     if (what == 30) {
         _isTitleChanged = true;
         if ( _nameTitle != caption ) {
             setTitle(Session::NameRole,caption);
             return;
         }
     }
 
     if (what == 31) {
         QString cwd=caption;
         cwd=cwd.replace( QRegExp(QLatin1String("^~")), QDir::homePath() );
         Q_EMIT openUrlRequest(cwd);
     }
 
     // change icon via \033]32;Icon\007
     if (what == 32) {
         _isTitleChanged = true;
         if ( _iconName != caption ) {
             _iconName = caption;
 
             modified = true;
         }
     }
 
     if (what == 50) {
         Q_EMIT profileChangeCommandReceived(caption);
         return;
     }
 
     if ( modified ) {
         Q_EMIT titleChanged();
     }
 }
 
 QString Session::userTitle() const
 {
     return _userTitle;
 }
 void Session::setTabTitleFormat(TabTitleContext context , const QString & format)
 {
     if ( context == LocalTabTitle ) {
         _localTabTitleFormat = format;
     } else if ( context == RemoteTabTitle ) {
         _remoteTabTitleFormat = format;
     }
 }
 QString Session::tabTitleFormat(TabTitleContext context) const
 {
     if ( context == LocalTabTitle ) {
         return _localTabTitleFormat;
     } else if ( context == RemoteTabTitle ) {
         return _remoteTabTitleFormat;
     }
 
     return QString();
 }
 
 void Session::monitorTimerDone()
 {
     //FIXME: The idea here is that the notification popup will appear to tell the user than output from
     //the terminal has stopped and the popup will disappear when the user activates the session.
     //
     //This breaks with the addition of multiple views of a session.  The popup should disappear
     //when any of the views of the session becomes active
 
 
     //FIXME: Make message text for this notification and the activity notification more descriptive.
     if (_monitorSilence) {
         Q_EMIT silence();
         Q_EMIT stateChanged(NOTIFYSILENCE);
     } else {
         Q_EMIT stateChanged(NOTIFYNORMAL);
     }
 
     _notifiedActivity=false;
 }
 
 void Session::activityStateSet(int state)
 {
     if (state==NOTIFYBELL) {
         QString s;
         s.sprintf("Bell in session '%s'",_nameTitle.toUtf8().data());
 
         Q_EMIT bellRequest( s );
     } else if (state==NOTIFYACTIVITY) {
         if (_monitorSilence) {
             _monitorTimer->start(_silenceSeconds*1000);
         }
 
         if ( _monitorActivity ) {
             //FIXME:  See comments in Session::monitorTimerDone()
             if (!_notifiedActivity) {
                 _notifiedActivity=true;
                 Q_EMIT activity();
             }
         }
     }
 
     if ( state==NOTIFYACTIVITY && !_monitorActivity ) {
         state = NOTIFYNORMAL;
     }
     if ( state==NOTIFYSILENCE && !_monitorSilence ) {
         state = NOTIFYNORMAL;
     }
 
     Q_EMIT stateChanged(state);
 }
 
 void Session::onViewSizeChange(int /*height*/, int /*width*/)
 {
     updateTerminalSize();
 }
 void Session::onEmulationSizeChange(QSize size)
 {
     setSize(size);
 }
 
 void Session::updateTerminalSize()
 {
     QListIterator<TerminalDisplay *> viewIter(_views);
 
     int minLines = -1;
     int minColumns = -1;
 
     // minimum number of lines and columns that views require for
     // their size to be taken into consideration ( to avoid problems
     // with new view widgets which haven't yet been set to their correct size )
     const int VIEW_LINES_THRESHOLD = 2;
     const int VIEW_COLUMNS_THRESHOLD = 2;
 
     //select largest number of lines and columns that will fit in all visible views
     while ( viewIter.hasNext() ) {
         TerminalDisplay * view = viewIter.next();
         if ( //!view->isVisible() == false && QMLTermWidget: We need to disable this check. It has issues when resizing invisible terminal.
                 view->lines() >= VIEW_LINES_THRESHOLD &&
                 view->columns() >= VIEW_COLUMNS_THRESHOLD ) {
             minLines = (minLines == -1) ? view->lines() : qMin( minLines , view->lines() );
             minColumns = (minColumns == -1) ? view->columns() : qMin( minColumns , view->columns() );
         }
     }
 
     // backend emulation must have a _terminal of at least 1 column x 1 line in size
     if ( minLines > 0 && minColumns > 0 ) {
         _emulation->setImageSize( minLines , minColumns );
         _shellProcess->setWindowSize( minLines , minColumns );
     }
 }
 
 void Session::refresh()
 {
     // attempt to get the shell process to redraw the display
     //
     // this requires the program running in the shell
     // to cooperate by sending an update in response to
     // a window size change
     //
     // the window size is changed twice, first made slightly larger and then
     // resized back to its normal size so that there is actually a change
     // in the window size (some shells do nothing if the
     // new and old sizes are the same)
     //
     // if there is a more 'correct' way to do this, please
     // send an email with method or patches to konsole-devel@kde.org
 
     const QSize existingSize = _shellProcess->windowSize();
     _shellProcess->setWindowSize(existingSize.height(),existingSize.width()+1);
     _shellProcess->setWindowSize(existingSize.height(),existingSize.width());
 }
 
 bool Session::sendSignal(int signal)
 {
     int result = ::kill(_shellProcess->pid(),signal);
 
      if ( result == 0 )
      {
          _shellProcess->waitForFinished();
          return true;
      }
      else
          return false;
 }
 
 void Session::close()
 {
     _autoClose = true;
     _wantedClose = true;
     if (!_shellProcess->isRunning() || !sendSignal(SIGHUP)) {
         // Forced close.
         QTimer::singleShot(1, this, SIGNAL(finished()));
     }
 }
 
 void Session::sendText(const QString & text) const
 {
     _emulation->sendText(text);
 }
 
 Session::~Session()
 {
     delete _emulation;
     delete _shellProcess;
 //  delete _zmodemProc;
 }
 
 void Session::setProfileKey(const QString & key)
 {
     _profileKey = key;
     Q_EMIT profileChanged(key);
 }
 QString Session::profileKey() const
 {
     return _profileKey;
 }
 
 void Session::done(int exitStatus)
 {
     if (!_autoClose) {
         _userTitle = QString::fromLatin1("This session is done. Finished");
         Q_EMIT titleChanged();
         return;
     }
 
     QString message;
     if (!_wantedClose || exitStatus != 0) {
 
         if (_shellProcess->exitStatus() == QProcess::NormalExit) {
             message.sprintf("Session '%s' exited with status %d.",
                           _nameTitle.toUtf8().data(), exitStatus);
         } else {
             message.sprintf("Session '%s' crashed.",
                           _nameTitle.toUtf8().data());
         }
     }
 
     if ( !_wantedClose && _shellProcess->exitStatus() != QProcess::NormalExit ) {
         message.sprintf("Session '%s' exited unexpectedly.",
                         _nameTitle.toUtf8().data());
     }
 
     Q_EMIT finished();
 }
 
 Emulation * Session::emulation() const
 {
     return _emulation;
 }
 
 QString Session::keyBindings() const
 {
     return _emulation->keyBindings();
 }
 
 QStringList Session::environment() const
 {
     return _environment;
 }
 
 void Session::setEnvironment(const QStringList & environment)
 {
     _environment = environment;
 }
 
 int Session::sessionId() const
 {
     return _sessionId;
 }
 
 void Session::setKeyBindings(const QString & id)
 {
     _emulation->setKeyBindings(id);
 }
 
 void Session::setTitle(TitleRole role , const QString & newTitle)
 {
     if ( title(role) != newTitle ) {
         if ( role == NameRole ) {
             _nameTitle = newTitle;
         } else if ( role == DisplayedTitleRole ) {
             _displayTitle = newTitle;
         }
 
         Q_EMIT titleChanged();
     }
 }
 
 QString Session::title(TitleRole role) const
 {
     if ( role == NameRole ) {
         return _nameTitle;
     } else if ( role == DisplayedTitleRole ) {
         return _displayTitle;
     } else {
         return QString();
     }
 }
 
 void Session::setIconName(const QString & iconName)
 {
     if ( iconName != _iconName ) {
         _iconName = iconName;
         Q_EMIT titleChanged();
     }
 }
 
 void Session::setIconText(const QString & iconText)
 {
     _iconText = iconText;
     //kDebug(1211)<<"Session setIconText " <<  _iconText;
 }
 
 QString Session::iconName() const
 {
     return _iconName;
 }
 
 QString Session::iconText() const
 {
     return _iconText;
 }
 
 bool Session::isTitleChanged() const
 {
     return _isTitleChanged;
 }
 
 void Session::setHistoryType(const HistoryType & hType)
 {
     _emulation->setHistory(hType);
 }
 
 const HistoryType & Session::historyType() const
 {
     return _emulation->history();
 }
 
 void Session::clearHistory()
 {
     _emulation->clearHistory();
 }
 
 QStringList Session::arguments() const
 {
     return _arguments;
 }
 
 QString Session::program() const
 {
     return _program;
 }
 
 // unused currently
 bool Session::isMonitorActivity() const
 {
     return _monitorActivity;
 }
 // unused currently
 bool Session::isMonitorSilence()  const
 {
     return _monitorSilence;
 }
 
 void Session::setMonitorActivity(bool _monitor)
 {
     _monitorActivity=_monitor;
     _notifiedActivity=false;
 
     activityStateSet(NOTIFYNORMAL);
 }
 
 void Session::setMonitorSilence(bool _monitor)
 {
     if (_monitorSilence==_monitor) {
         return;
     }
 
     _monitorSilence=_monitor;
     if (_monitorSilence) {
         _monitorTimer->start(_silenceSeconds*1000);
     } else {
         _monitorTimer->stop();
     }
 
     activityStateSet(NOTIFYNORMAL);
 }
 
 void Session::setMonitorSilenceSeconds(int seconds)
 {
     _silenceSeconds=seconds;
     if (_monitorSilence) {
         _monitorTimer->start(_silenceSeconds*1000);
     }
 }
 
 void Session::setAddToUtmp(bool set)
 {
     _addToUtmp = set;
 }
 
 void Session::setFlowControlEnabled(bool enabled)
 {
     if (_flowControl == enabled) {
         return;
     }
 
     _flowControl = enabled;
 
     if (_shellProcess) {
         _shellProcess->setFlowControlEnabled(_flowControl);
     }
 
     Q_EMIT flowControlEnabledChanged(enabled);
 }
 bool Session::flowControlEnabled() const
 {
     return _flowControl;
 }
 //void Session::fireZModemDetected()
 //{
 //  if (!_zmodemBusy)
 //  {
 //    QTimer::singleShot(10, this, SIGNAL(zmodemDetected()));
 //    _zmodemBusy = true;
 //  }
 //}
 
 //void Session::cancelZModem()
 //{
 //  _shellProcess->sendData("\030\030\030\030", 4); // Abort
 //  _zmodemBusy = false;
 //}
 
 //void Session::startZModem(const QString &zmodem, const QString &dir, const QStringList &list)
 //{
 //  _zmodemBusy = true;
 //  _zmodemProc = new KProcess();
 //  _zmodemProc->setOutputChannelMode( KProcess::SeparateChannels );
 //
 //  *_zmodemProc << zmodem << "-v" << list;
 //
 //  if (!dir.isEmpty())
 //     _zmodemProc->setWorkingDirectory(dir);
 //
 //  _zmodemProc->start();
 //
 //  connect(_zmodemProc,SIGNAL (readyReadStandardOutput()),
 //          this, SLOT(zmodemReadAndSendBlock()));
 //  connect(_zmodemProc,SIGNAL (readyReadStandardError()),
 //          this, SLOT(zmodemReadStatus()));
 //  connect(_zmodemProc,SIGNAL (finished(int,QProcess::ExitStatus)),
 //          this, SLOT(zmodemFinished()));
 //
 //  disconnect( _shellProcess,SIGNAL(block_in(const char*,int)), this, SLOT(onReceiveBlock(const char*,int)) );
 //  connect( _shellProcess,SIGNAL(block_in(const char*,int)), this, SLOT(zmodemRcvBlock(const char*,int)) );
 //
 //  _zmodemProgress = new ZModemDialog(QApplication::activeWindow(), false,
 //                                    i18n("ZModem Progress"));
 //
 //  connect(_zmodemProgress, SIGNAL(user1Clicked()),
 //          this, SLOT(zmodemDone()));
 //
 //  _zmodemProgress->show();
 //}
 
 /*void Session::zmodemReadAndSendBlock()
 {
   _zmodemProc->setReadChannel( QProcess::StandardOutput );
   QByteArray data = _zmodemProc->readAll();
 
   if ( data.count() == 0 )
       return;
 
   _shellProcess->sendData(data.constData(),data.count());
 }
 */
 /*
 void Session::zmodemReadStatus()
 {
   _zmodemProc->setReadChannel( QProcess::StandardError );
   QByteArray msg = _zmodemProc->readAll();
   while(!msg.isEmpty())
   {
      int i = msg.indexOf('\015');
      int j = msg.indexOf('\012');
      QByteArray txt;
      if ((i != -1) && ((j == -1) || (i < j)))
      {
        msg = msg.mid(i+1);
      }
      else if (j != -1)
      {
        txt = msg.left(j);
        msg = msg.mid(j+1);
      }
      else
      {
        txt = msg;
        msg.truncate(0);
      }
      if (!txt.isEmpty())
        _zmodemProgress->addProgressText(QString::fromLocal8Bit(txt));
   }
 }
 */
 /*
 void Session::zmodemRcvBlock(const char *data, int len)
 {
   QByteArray ba( data, len );
 
   _zmodemProc->write( ba );
 }
 */
 /*
 void Session::zmodemFinished()
 {
   if (_zmodemProc)
   {
     delete _zmodemProc;
     _zmodemProc = 0;
     _zmodemBusy = false;
 
     disconnect( _shellProcess,SIGNAL(block_in(const char*,int)), this ,SLOT(zmodemRcvBlock(const char*,int)) );
     connect( _shellProcess,SIGNAL(block_in(const char*,int)), this, SLOT(onReceiveBlock(const char*,int)) );
 
     _shellProcess->sendData("\030\030\030\030", 4); // Abort
     _shellProcess->sendData("\001\013\n", 3); // Try to get prompt back
     _zmodemProgress->transferDone();
   }
 }
 */
 void Session::onReceiveBlock( const char * buf, int len )
 {
     _emulation->receiveData( buf, len );
     Q_EMIT receivedData( QString::fromLatin1( buf, len ) );
 }
 
 QSize Session::size()
 {
     return _emulation->imageSize();
 }
 
 void Session::setSize(const QSize & size)
 {
     if ((size.width() <= 1) || (size.height() <= 1)) {
         return;
     }
 
     Q_EMIT resizeRequest(size);
 }
 int Session::foregroundProcessId() const
 {
     return _shellProcess->foregroundProcessGroup();
 }
 
 QString Session::foregroundProcessName()
 {
     QString name;
 
     if (updateForegroundProcessInfo()) {
         bool ok = false;
         name = _foregroundProcessInfo->name(&ok);
         if (!ok)
             name.clear();
     }
 
     return name;
 }
 
 QString Session::currentDir() 
 {
     QString path;
     if (updateForegroundProcessInfo()) {
         bool ok = false;
         path= _foregroundProcessInfo->currentDir(&ok);
         if (!ok)
             path.clear();
     }
     return path;
 }
 
 bool Session::updateForegroundProcessInfo()
 {
     Q_ASSERT(_shellProcess);
 
     const int foregroundPid = _shellProcess->foregroundProcessGroup();
     if (foregroundPid != _foregroundPid) {
         delete _foregroundProcessInfo;
         _foregroundProcessInfo = ProcessInfo::newInstance(foregroundPid);
         _foregroundPid = foregroundPid;
     }
 
     if (_foregroundProcessInfo) {
         _foregroundProcessInfo->update();
         return _foregroundProcessInfo->isValid();
     } else {
         return false;
     }
 }
 
 
 int Session::processId() const
 {
     return _shellProcess->pid();
 }
 int Session::getPtySlaveFd() const
 {
     return ptySlaveFd;
 }
 
 SessionGroup::SessionGroup()
         : _masterMode(0)
 {
 }
 SessionGroup::~SessionGroup()
 {
     // disconnect all
     connectAll(false);
 }
 int SessionGroup::masterMode() const
 {
     return _masterMode;
 }
 QList<Session *> SessionGroup::sessions() const
 {
     return _sessions.keys();
 }
 bool SessionGroup::masterStatus(Session * session) const
 {
     return _sessions[session];
 }
 
 void SessionGroup::addSession(Session * session)
 {
     _sessions.insert(session,false);
 
     QListIterator<Session *> masterIter(masters());
 
     while ( masterIter.hasNext() ) {
         connectPair(masterIter.next(),session);
     }
 }
 void SessionGroup::removeSession(Session * session)
 {
     setMasterStatus(session,false);
 
     QListIterator<Session *> masterIter(masters());
 
     while ( masterIter.hasNext() ) {
         disconnectPair(masterIter.next(),session);
     }
 
     _sessions.remove(session);
 }
 void SessionGroup::setMasterMode(int mode)
 {
     _masterMode = mode;
 
     connectAll(false);
     connectAll(true);
 }
 QList<Session *> SessionGroup::masters() const
 {
     return _sessions.keys(true);
 }
 void SessionGroup::connectAll(bool connect)
 {
     QListIterator<Session *> masterIter(masters());
 
     while ( masterIter.hasNext() ) {
         Session * master = masterIter.next();
 
         QListIterator<Session *> otherIter(_sessions.keys());
         while ( otherIter.hasNext() ) {
             Session * other = otherIter.next();
 
             if ( other != master ) {
                 if ( connect ) {
                     connectPair(master,other);
                 } else {
                     disconnectPair(master,other);
                 }
             }
         }
     }
 }
 void SessionGroup::setMasterStatus(Session * session, bool master)
 {
     bool wasMaster = _sessions[session];
     _sessions[session] = master;
 
     if ((!wasMaster && !master)
             || (wasMaster && master)) {
         return;
     }
 
     QListIterator<Session *> iter(_sessions.keys());
     while (iter.hasNext()) {
         Session * other = iter.next();
 
         if (other != session) {
             if (master) {
                 connectPair(session, other);
             } else {
                 disconnectPair(session, other);
             }
         }
     }
 }
 
 void SessionGroup::connectPair(Session * master , Session * other)
 {
 //    qDebug() << k_funcinfo;
 
     if ( _masterMode & CopyInputToAll ) {
         qDebug() << "Connection session " << master->nameTitle() << "to" << other->nameTitle();
 
         connect( master->emulation() , SIGNAL(sendData(const char *,int)) , other->emulation() ,
                  SLOT(sendString(const char *,int)) );
     }
 }
 void SessionGroup::disconnectPair(Session * master , Session * other)
 {
 //    qDebug() << k_funcinfo;
 
     if ( _masterMode & CopyInputToAll ) {
         qDebug() << "Disconnecting session " << master->nameTitle() << "from" << other->nameTitle();
 
         disconnect( master->emulation() , SIGNAL(sendData(const char *,int)) , other->emulation() ,
                     SLOT(sendString(const char *,int)) );
     }
 }
 
 //#include "moc_Session.cpp"