File indexing completed on 2024-05-19 05:28:19

 /*
     This file is part of Konsole
 
     SPDX-FileCopyrightText: 2006-2007 Robert Knight <robertknight@gmail.com>
     SPDX-FileCopyrightText: 1997, 1998 Lars Doelle <lars.doelle@on-line.de>
 
     Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
 
     SPDX-License-Identifier: GPL-2.0-or-later
 
     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 <csignal>
 #include <cstdlib>
 
 // Qt
 #include <QApplication>
 #include <QDir>
 #include <QFile>
 #include <QRegExp>
 #include <QRegularExpression>
 #include <QStringList>
 #include <QtDebug>
 
 #include "Pty.h"
 // #include "kptyprocess.h"
 #include "ShellCommand.h"
 #include "TerminalDisplay.h"
 #include "Vt102Emulation.h"
 #include "kptydevice.h"
 
 // QMLTermWidget
 #include <QQuickWindow>
 
 using namespace Konsole;
 
 int Session::lastSessionId = 0;
 
 Session::Session(QObject *parent)
     : QObject(parent)
     , _shellProcess(nullptr)
     , _emulation(nullptr)
     , _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)
     , _hasDarkBackground(false)
     , _foregroundPid(0)
 {
     _sessionId = ++lastSessionId;
 
     // create teletype for I/O with shell process
     _shellProcess = std::make_unique<Pty>();
     ptySlaveFd = _shellProcess->pty()->slaveFd();
 
     // create emulation backend
     _emulation = std::make_unique<Vt102Emulation>();
 
     connect(_emulation.get(), &Emulation::titleChanged, this, &Session::setUserTitle);
     connect(_emulation.get(), &Emulation::stateSet, this, &Session::activityStateSet);
     connect(_emulation.get(), &Emulation::changeTabTextColorRequest, this, &Session::changeTabTextColorRequest);
     connect(_emulation.get(), &Emulation::profileChangeCommandReceived, this, &Session::profileChangeCommandReceived);
 
     connect(_emulation.get(), &Emulation::imageResizeRequest, this, &Session::onEmulationSizeChange);
     connect(_emulation.get(), &Emulation::imageSizeChanged, this, &Session::onViewSizeChange);
     connect(_emulation.get(), &Vt102Emulation::cursorChanged, this, &Session::cursorChanged);
 
     // connect teletype to emulation backend
     _shellProcess->setUtf8Mode(_emulation->utf8());
 
     connect(_shellProcess.get(), &Pty::receivedData, this, &Session::onReceiveBlock);
     connect(_emulation.get(), &Emulation::sendData, _shellProcess.get(), &Pty::sendData);
     connect(_emulation.get(), &Emulation::useUtf8Request, _shellProcess.get(), &Pty::setUtf8Mode);
 
     connect(_shellProcess.get(), qOverload<int, QProcess::ExitStatus>(&QProcess::finished), this, &Session::done);
     // 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, &QTimer::timeout, this, &Session::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;
 }
 
 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) const
 {
     emulation()->setCodec(codec);
 }
 
 void Session::setProgram(const QString &program)
 {
     _program = ShellCommand::expand(program);
 }
 void Session::setInitialWorkingDirectory(const QString &dir)
 {
     _initialWorkingDir = ShellCommand::expand(dir);
 }
 void Session::setArguments(const QStringList &arguments)
 {
     _arguments = ShellCommand::expand(arguments);
 }
 
 TerminalDisplay *Session::view() const
 {
     return _view;
 }
 
 void Session::setView(TerminalDisplay *widget)
 {
     Q_ASSERT(!_view);
     _view = widget;
 
     if (_emulation != nullptr) {
         // connect emulation - view signals and slots
         connect(widget, &TerminalDisplay::keyPressedSignal, _emulation.get(), &Emulation::sendKeyEvent);
         connect(widget, &TerminalDisplay::mouseSignal, _emulation.get(), &Emulation::sendMouseEvent);
         connect(widget, &TerminalDisplay::sendStringToEmu, _emulation.get(), [this](auto string) {
             _emulation->sendString(string);
         });
 
         // allow emulation to notify view when the foreground process
         // indicates whether or not it is interested in mouse signals
         connect(_emulation.get(), &Emulation::programUsesMouseChanged, widget, &TerminalDisplay::setUsesMouse);
 
         widget->setUsesMouse(_emulation->programUsesMouse());
 
         connect(_emulation.get(), &Emulation::programBracketedPasteModeChanged, widget, &TerminalDisplay::setBracketedPasteMode);
 
         widget->setBracketedPasteMode(_emulation->programBracketedPasteMode());
 
         widget->setScreenWindow(_emulation->createWindow());
     }
 
     // connect view signals and slots
     QObject::connect(widget, &TerminalDisplay::changedContentSizeSignal, this, &Session::onViewSizeChange);
 
     QObject::connect(widget, &QObject::destroyed, this, &Session::viewDestroyed);
     // slot for close
     // QObject::connect(this, SIGNAL(finished()), widget, SLOT(close()));
 }
 
 void Session::viewDestroyed(QObject *view)
 {
     TerminalDisplay *display = (TerminalDisplay *)view;
     Q_UNUSED(display)
 
     Q_ASSERT(_view);
 
     view = nullptr;
 }
 
 void Session::removeView(TerminalDisplay *widget)
 {
     _view = nullptr;
 
     disconnect(widget, nullptr, this, nullptr);
 
     if (_emulation != nullptr) {
         // disconnect
         //  - key presses signals from widget
         //  - mouse activity signals from widget
         //  - string sending signals from widget
         //
         //  ... and any other signals connected in addView()
         disconnect(widget, nullptr, _emulation.get(), nullptr);
 
         // disconnect state change signals emitted by emulation
         disconnect(_emulation.get(), nullptr, widget, nullptr);
     }
 
     // close the session automatically when the last view is removed
     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;
         }
     }
 
     QString cwd = QDir::currentPath();
     if (!_initialWorkingDir.isEmpty()) {
         _shellProcess->setWorkingDirectory(_initialWorkingDir);
     } else {
         _shellProcess->setWorkingDirectory(cwd);
     }
 
     _shellProcess->setFlowControlEnabled(_flowControl);
     _shellProcess->setEraseChar(_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);
 
     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->setEraseChar(_emulation->eraseChar());
     _shellProcess->setWriteable(false);
 
     // disconnet send data from emulator to internal terminal process
     disconnect(_emulation.get(), &Emulation::sendData, _shellProcess.get(), &Pty::sendData);
 
     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(QRegularExpression(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) {
         Q_EMIT bellRequest(tr("Bell in session '%1'").arg(_nameTitle));
     } 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()
 {
     // backend emulation must have a _terminal of at least 1 column x 1 line in size
     _emulation->setImageSize(_view->lines(), _view->columns());
     _shellProcess->setWindowSize(_view->columns(), _view->lines(), _view->width(), _view->height());
 }
 
 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();
     const QSize existingPixelSize = _shellProcess->pixelSize();
     _shellProcess->setWindowSize(existingSize.height(), existingSize.width() + 1, existingPixelSize.height(), existingPixelSize.width());
     _shellProcess->setWindowSize(existingSize.height(), existingSize.width(), existingPixelSize.height(), existingPixelSize.width());
 }
 
 bool Session::sendSignal(int signal)
 {
     int result = ::kill(static_cast<pid_t>(_shellProcess->processId()), signal);
 
     if (result == 0) {
         _shellProcess->waitForFinished();
         return true;
     } else
         return false;
 }
 
 void Session::close()
 {
     _autoClose = true;
     _wantedClose = true;
     if (_shellProcess->state() != QProcess::Running || !sendSignal(SIGHUP)) {
         // Forced close.
         QTimer::singleShot(1, this, &Session::finished);
     }
 }
 
 void Session::sendText(const QString &text) const
 {
     _emulation->sendText(text);
 }
 
 void Session::sendKeyEvent(QKeyEvent *e) const
 {
     _emulation->sendKeyEvent(e, false);
 }
 
 Session::~Session() = default;
 
 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;
     }
 
     // message is not being used. But in the original kpty.cpp file
     // (https://cgit.kde.org/kpty.git/) it's part of a notification.
     // So, we make it translatable, hoping that in the future it will
     // be used in some kind of notification.
     QString message;
     if (!_wantedClose || exitStatus != 0) {
         if (_shellProcess->exitStatus() == QProcess::NormalExit) {
             message = tr("Session '%1' exited with status %2.").arg(_nameTitle).arg(exitStatus);
         } else {
             message = tr("Session '%1' crashed.").arg(_nameTitle);
         }
     }
 
     if (!_wantedClose && _shellProcess->exitStatus() != QProcess::NormalExit)
         message = tr("Session '%1' exited unexpectedly.").arg(_nameTitle);
     else
         Q_EMIT finished();
 }
 
 Emulation *Session::emulation() const
 {
     return _emulation.get();
 }
 
 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::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) {
         _foregroundProcessInfo.reset();
         _foregroundProcessInfo = ProcessInfo::newInstance(foregroundPid);
         _foregroundPid = foregroundPid;
     }
 
     if (_foregroundProcessInfo) {
         _foregroundProcessInfo->update();
         return _foregroundProcessInfo->isValid();
     } else {
         return false;
     }
 }
 
 int Session::processId() const
 {
     return static_cast<int>(_shellProcess->processId());
 }
 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);
 
     const auto masterSessions = masters();
     for (const auto master : masterSessions) {
         connectPair(master, session);
     }
 }
 
 void SessionGroup::removeSession(Session *session)
 {
     setMasterStatus(session, false);
 
     const auto masterSessions = masters();
     for (const auto master : masterSessions) {
         disconnectPair(master, 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)
 {
     const auto masterSessions = masters();
     for (const auto master : masterSessions) {
         const auto other = _sessions.keys();
 
         for (const auto other : other) {
             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) {
         return;
     }
 
     const auto otherSessions = _sessions.keys();
     for (const auto other : otherSessions) {
         if (other != session) {
             if (master) {
                 connectPair(session, other);
             } else {
                 disconnectPair(session, other);
             }
         }
     }
 }
 
 void SessionGroup::connectPair(Session *master, Session *other) const
 {
     //    qDebug() << k_funcinfo;
 
     if (_masterMode & CopyInputToAll) {
         qDebug() << "Connection session " << master->nameTitle() << "to" << other->nameTitle();
 
         connect(master->emulation(), &Emulation::sendData, other->emulation(), &Emulation::sendString);
     }
 }
 void SessionGroup::disconnectPair(Session *master, Session *other) const
 {
     //    qDebug() << k_funcinfo;
 
     if (_masterMode & CopyInputToAll) {
         qDebug() << "Disconnecting session " << master->nameTitle() << "from" << other->nameTitle();
 
         disconnect(master->emulation(), &Emulation::sendData, other->emulation(), &Emulation::sendString);
     }
 }
 
 // #include "moc_Session.cpp"